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-rw-r--r--fs/nfsd/Kconfig12
-rw-r--r--fs/nfsd/cache.h2
-rw-r--r--fs/nfsd/export.c434
-rw-r--r--fs/nfsd/lockd.c2
-rw-r--r--fs/nfsd/nfs4acl.c18
-rw-r--r--fs/nfsd/nfs4callback.c32
-rw-r--r--fs/nfsd/nfs4proc.c438
-rw-r--r--fs/nfsd/nfs4recover.c103
-rw-r--r--fs/nfsd/nfs4state.c1810
-rw-r--r--fs/nfsd/nfs4xdr.c555
-rw-r--r--fs/nfsd/nfscache.c3
-rw-r--r--fs/nfsd/nfsctl.c345
-rw-r--r--fs/nfsd/nfsd.h33
-rw-r--r--fs/nfsd/nfsfh.c39
-rw-r--r--fs/nfsd/nfssvc.c38
-rw-r--r--fs/nfsd/state.h167
-rw-r--r--fs/nfsd/vfs.c259
-rw-r--r--fs/nfsd/vfs.h42
-rw-r--r--fs/nfsd/xdr4.h56
19 files changed, 2211 insertions, 2177 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index fbb2a5e..10e6366 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -28,18 +28,6 @@ config NFSD
If unsure, say N.
-config NFSD_DEPRECATED
- bool "Include support for deprecated syscall interface to NFSD"
- depends on NFSD
- default y
- help
- The syscall interface to nfsd was obsoleted in 2.6.0 by a new
- filesystem based interface. The old interface is due for removal
- in 2.6.40. If you wish to remove the interface before then
- say N.
-
- In unsure, say Y.
-
config NFSD_V2_ACL
bool
depends on NFSD
diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h
index d892be6..93cc9d3 100644
--- a/fs/nfsd/cache.h
+++ b/fs/nfsd/cache.h
@@ -69,7 +69,7 @@ enum {
int nfsd_reply_cache_init(void);
void nfsd_reply_cache_shutdown(void);
-int nfsd_cache_lookup(struct svc_rqst *, int);
+int nfsd_cache_lookup(struct svc_rqst *);
void nfsd_cache_update(struct svc_rqst *, int, __be32 *);
#ifdef CONFIG_NFSD_V4
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index d7c4f02..a0205fc 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -16,7 +16,6 @@
#include <linux/module.h>
#include <linux/exportfs.h>
-#include <linux/nfsd/syscall.h>
#include <net/ipv6.h>
#include "nfsd.h"
@@ -318,7 +317,6 @@ static void svc_export_put(struct kref *ref)
struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
path_put(&exp->ex_path);
auth_domain_put(exp->ex_client);
- kfree(exp->ex_pathname);
nfsd4_fslocs_free(&exp->ex_fslocs);
kfree(exp);
}
@@ -528,11 +526,6 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
exp.ex_client = dom;
- err = -ENOMEM;
- exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
- if (!exp.ex_pathname)
- goto out2;
-
/* expiry */
err = -EINVAL;
exp.h.expiry_time = get_expiry(&mesg);
@@ -613,8 +606,6 @@ out4:
nfsd4_fslocs_free(&exp.ex_fslocs);
kfree(exp.ex_uuid);
out3:
- kfree(exp.ex_pathname);
-out2:
path_put(&exp.ex_path);
out1:
auth_domain_put(dom);
@@ -678,7 +669,6 @@ static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
new->ex_client = item->ex_client;
new->ex_path.dentry = dget(item->ex_path.dentry);
new->ex_path.mnt = mntget(item->ex_path.mnt);
- new->ex_pathname = NULL;
new->ex_fslocs.locations = NULL;
new->ex_fslocs.locations_count = 0;
new->ex_fslocs.migrated = 0;
@@ -696,8 +686,6 @@ static void export_update(struct cache_head *cnew, struct cache_head *citem)
new->ex_fsid = item->ex_fsid;
new->ex_uuid = item->ex_uuid;
item->ex_uuid = NULL;
- new->ex_pathname = item->ex_pathname;
- item->ex_pathname = NULL;
new->ex_fslocs.locations = item->ex_fslocs.locations;
item->ex_fslocs.locations = NULL;
new->ex_fslocs.locations_count = item->ex_fslocs.locations_count;
@@ -797,58 +785,6 @@ exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
return ek;
}
-#ifdef CONFIG_NFSD_DEPRECATED
-static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv,
- struct svc_export *exp)
-{
- struct svc_expkey key, *ek;
-
- key.ek_client = clp;
- key.ek_fsidtype = fsid_type;
- memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
- key.ek_path = exp->ex_path;
- key.h.expiry_time = NEVER;
- key.h.flags = 0;
-
- ek = svc_expkey_lookup(&key);
- if (ek)
- ek = svc_expkey_update(&key,ek);
- if (ek) {
- cache_put(&ek->h, &svc_expkey_cache);
- return 0;
- }
- return -ENOMEM;
-}
-
-/*
- * Find the client's export entry matching xdev/xino.
- */
-static inline struct svc_expkey *
-exp_get_key(svc_client *clp, dev_t dev, ino_t ino)
-{
- u32 fsidv[3];
-
- if (old_valid_dev(dev)) {
- mk_fsid(FSID_DEV, fsidv, dev, ino, 0, NULL);
- return exp_find_key(clp, FSID_DEV, fsidv, NULL);
- }
- mk_fsid(FSID_ENCODE_DEV, fsidv, dev, ino, 0, NULL);
- return exp_find_key(clp, FSID_ENCODE_DEV, fsidv, NULL);
-}
-
-/*
- * Find the client's export entry matching fsid
- */
-static inline struct svc_expkey *
-exp_get_fsid_key(svc_client *clp, int fsid)
-{
- u32 fsidv[2];
-
- mk_fsid(FSID_NUM, fsidv, 0, 0, fsid, NULL);
-
- return exp_find_key(clp, FSID_NUM, fsidv, NULL);
-}
-#endif
static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
struct cache_req *reqp)
@@ -890,275 +826,7 @@ static struct svc_export *exp_parent(svc_client *clp, struct path *path)
return exp;
}
-#ifdef CONFIG_NFSD_DEPRECATED
-/*
- * Hashtable locking. Write locks are placed only by user processes
- * wanting to modify export information.
- * Write locking only done in this file. Read locking
- * needed externally.
- */
-static DECLARE_RWSEM(hash_sem);
-
-void
-exp_readlock(void)
-{
- down_read(&hash_sem);
-}
-
-static inline void
-exp_writelock(void)
-{
- down_write(&hash_sem);
-}
-
-void
-exp_readunlock(void)
-{
- up_read(&hash_sem);
-}
-
-static inline void
-exp_writeunlock(void)
-{
- up_write(&hash_sem);
-}
-#else
-
-/* hash_sem not needed once deprecated interface is removed */
-void exp_readlock(void) {}
-static inline void exp_writelock(void){}
-void exp_readunlock(void) {}
-static inline void exp_writeunlock(void){}
-
-#endif
-
-#ifdef CONFIG_NFSD_DEPRECATED
-static void exp_do_unexport(svc_export *unexp);
-static int exp_verify_string(char *cp, int max);
-
-static void exp_fsid_unhash(struct svc_export *exp)
-{
- struct svc_expkey *ek;
-
- if ((exp->ex_flags & NFSEXP_FSID) == 0)
- return;
-
- ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
- if (!IS_ERR(ek)) {
- sunrpc_invalidate(&ek->h, &svc_expkey_cache);
- cache_put(&ek->h, &svc_expkey_cache);
- }
-}
-
-static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
-{
- u32 fsid[2];
-
- if ((exp->ex_flags & NFSEXP_FSID) == 0)
- return 0;
-
- mk_fsid(FSID_NUM, fsid, 0, 0, exp->ex_fsid, NULL);
- return exp_set_key(clp, FSID_NUM, fsid, exp);
-}
-
-static int exp_hash(struct auth_domain *clp, struct svc_export *exp)
-{
- u32 fsid[2];
- struct inode *inode = exp->ex_path.dentry->d_inode;
- dev_t dev = inode->i_sb->s_dev;
-
- if (old_valid_dev(dev)) {
- mk_fsid(FSID_DEV, fsid, dev, inode->i_ino, 0, NULL);
- return exp_set_key(clp, FSID_DEV, fsid, exp);
- }
- mk_fsid(FSID_ENCODE_DEV, fsid, dev, inode->i_ino, 0, NULL);
- return exp_set_key(clp, FSID_ENCODE_DEV, fsid, exp);
-}
-
-static void exp_unhash(struct svc_export *exp)
-{
- struct svc_expkey *ek;
- struct inode *inode = exp->ex_path.dentry->d_inode;
-
- ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
- if (!IS_ERR(ek)) {
- sunrpc_invalidate(&ek->h, &svc_expkey_cache);
- cache_put(&ek->h, &svc_expkey_cache);
- }
-}
-
-/*
- * Export a file system.
- */
-int
-exp_export(struct nfsctl_export *nxp)
-{
- svc_client *clp;
- struct svc_export *exp = NULL;
- struct svc_export new;
- struct svc_expkey *fsid_key = NULL;
- struct path path;
- int err;
-
- /* Consistency check */
- err = -EINVAL;
- if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
- !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
- goto out;
-
- dprintk("exp_export called for %s:%s (%x/%ld fl %x).\n",
- nxp->ex_client, nxp->ex_path,
- (unsigned)nxp->ex_dev, (long)nxp->ex_ino,
- nxp->ex_flags);
-
- /* Try to lock the export table for update */
- exp_writelock();
-
- /* Look up client info */
- if (!(clp = auth_domain_find(nxp->ex_client)))
- goto out_unlock;
-
-
- /* Look up the dentry */
- err = kern_path(nxp->ex_path, 0, &path);
- if (err)
- goto out_put_clp;
- err = -EINVAL;
-
- exp = exp_get_by_name(clp, &path, NULL);
-
- memset(&new, 0, sizeof(new));
-
- /* must make sure there won't be an ex_fsid clash */
- if ((nxp->ex_flags & NFSEXP_FSID) &&
- (!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
- fsid_key->ek_path.mnt &&
- (fsid_key->ek_path.mnt != path.mnt ||
- fsid_key->ek_path.dentry != path.dentry))
- goto finish;
-
- if (!IS_ERR(exp)) {
- /* just a flags/id/fsid update */
-
- exp_fsid_unhash(exp);
- exp->ex_flags = nxp->ex_flags;
- exp->ex_anon_uid = nxp->ex_anon_uid;
- exp->ex_anon_gid = nxp->ex_anon_gid;
- exp->ex_fsid = nxp->ex_dev;
-
- err = exp_fsid_hash(clp, exp);
- goto finish;
- }
-
- err = check_export(path.dentry->d_inode, &nxp->ex_flags, NULL);
- if (err) goto finish;
-
- err = -ENOMEM;
-
- dprintk("nfsd: creating export entry %p for client %p\n", exp, clp);
-
- new.h.expiry_time = NEVER;
- new.h.flags = 0;
- new.ex_pathname = kstrdup(nxp->ex_path, GFP_KERNEL);
- if (!new.ex_pathname)
- goto finish;
- new.ex_client = clp;
- new.ex_path = path;
- new.ex_flags = nxp->ex_flags;
- new.ex_anon_uid = nxp->ex_anon_uid;
- new.ex_anon_gid = nxp->ex_anon_gid;
- new.ex_fsid = nxp->ex_dev;
-
- exp = svc_export_lookup(&new);
- if (exp)
- exp = svc_export_update(&new, exp);
-
- if (!exp)
- goto finish;
-
- if (exp_hash(clp, exp) ||
- exp_fsid_hash(clp, exp)) {
- /* failed to create at least one index */
- exp_do_unexport(exp);
- cache_flush();
- } else
- err = 0;
-finish:
- kfree(new.ex_pathname);
- if (!IS_ERR_OR_NULL(exp))
- exp_put(exp);
- if (!IS_ERR_OR_NULL(fsid_key))
- cache_put(&fsid_key->h, &svc_expkey_cache);
- path_put(&path);
-out_put_clp:
- auth_domain_put(clp);
-out_unlock:
- exp_writeunlock();
-out:
- return err;
-}
-
-/*
- * Unexport a file system. The export entry has already
- * been removed from the client's list of exported fs's.
- */
-static void
-exp_do_unexport(svc_export *unexp)
-{
- sunrpc_invalidate(&unexp->h, &svc_export_cache);
- exp_unhash(unexp);
- exp_fsid_unhash(unexp);
-}
-
-
-/*
- * unexport syscall.
- */
-int
-exp_unexport(struct nfsctl_export *nxp)
-{
- struct auth_domain *dom;
- svc_export *exp;
- struct path path;
- int err;
-
- /* Consistency check */
- if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
- !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
- return -EINVAL;
-
- exp_writelock();
-
- err = -EINVAL;
- dom = auth_domain_find(nxp->ex_client);
- if (!dom) {
- dprintk("nfsd: unexport couldn't find %s\n", nxp->ex_client);
- goto out_unlock;
- }
-
- err = kern_path(nxp->ex_path, 0, &path);
- if (err)
- goto out_domain;
-
- err = -EINVAL;
- exp = exp_get_by_name(dom, &path, NULL);
- path_put(&path);
- if (IS_ERR(exp))
- goto out_domain;
-
- exp_do_unexport(exp);
- exp_put(exp);
- err = 0;
-
-out_domain:
- auth_domain_put(dom);
- cache_flush();
-out_unlock:
- exp_writeunlock();
- return err;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
/*
* Obtain the root fh on behalf of a client.
@@ -1330,7 +998,7 @@ rqst_exp_parent(struct svc_rqst *rqstp, struct path *path)
return exp;
}
-static struct svc_export *find_fsidzero_export(struct svc_rqst *rqstp)
+struct svc_export *rqst_find_fsidzero_export(struct svc_rqst *rqstp)
{
u32 fsidv[2];
@@ -1350,7 +1018,7 @@ exp_pseudoroot(struct svc_rqst *rqstp, struct svc_fh *fhp)
struct svc_export *exp;
__be32 rv;
- exp = find_fsidzero_export(rqstp);
+ exp = rqst_find_fsidzero_export(rqstp);
if (IS_ERR(exp))
return nfserrno(PTR_ERR(exp));
rv = fh_compose(fhp, exp, exp->ex_path.dentry, NULL);
@@ -1367,7 +1035,6 @@ static void *e_start(struct seq_file *m, loff_t *pos)
unsigned hash, export;
struct cache_head *ch;
- exp_readlock();
read_lock(&svc_export_cache.hash_lock);
if (!n--)
return SEQ_START_TOKEN;
@@ -1418,7 +1085,6 @@ static void e_stop(struct seq_file *m, void *p)
__releases(svc_export_cache.hash_lock)
{
read_unlock(&svc_export_cache.hash_lock);
- exp_readunlock();
}
static struct flags {
@@ -1550,97 +1216,6 @@ const struct seq_operations nfs_exports_op = {
.show = e_show,
};
-#ifdef CONFIG_NFSD_DEPRECATED
-/*
- * Add or modify a client.
- * Change requests may involve the list of host addresses. The list of
- * exports and possibly existing uid maps are left untouched.
- */
-int
-exp_addclient(struct nfsctl_client *ncp)
-{
- struct auth_domain *dom;
- int i, err;
- struct in6_addr addr6;
-
- /* First, consistency check. */
- err = -EINVAL;
- if (! exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
- goto out;
- if (ncp->cl_naddr > NFSCLNT_ADDRMAX)
- goto out;
-
- /* Lock the hashtable */
- exp_writelock();
-
- dom = unix_domain_find(ncp->cl_ident);
-
- err = -ENOMEM;
- if (!dom)
- goto out_unlock;
-
- /* Insert client into hashtable. */
- for (i = 0; i < ncp->cl_naddr; i++) {
- ipv6_addr_set_v4mapped(ncp->cl_addrlist[i].s_addr, &addr6);
- auth_unix_add_addr(&init_net, &addr6, dom);
- }
- auth_unix_forget_old(dom);
- auth_domain_put(dom);
-
- err = 0;
-
-out_unlock:
- exp_writeunlock();
-out:
- return err;
-}
-
-/*
- * Delete a client given an identifier.
- */
-int
-exp_delclient(struct nfsctl_client *ncp)
-{
- int err;
- struct auth_domain *dom;
-
- err = -EINVAL;
- if (!exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
- goto out;
-
- /* Lock the hashtable */
- exp_writelock();
-
- dom = auth_domain_find(ncp->cl_ident);
- /* just make sure that no addresses work
- * and that it will expire soon
- */
- if (dom) {
- err = auth_unix_forget_old(dom);
- auth_domain_put(dom);
- }
-
- exp_writeunlock();
-out:
- return err;
-}
-
-/*
- * Verify that string is non-empty and does not exceed max length.
- */
-static int
-exp_verify_string(char *cp, int max)
-{
- int i;
-
- for (i = 0; i < max; i++)
- if (!cp[i])
- return i;
- cp[i] = 0;
- printk(KERN_NOTICE "nfsd: couldn't validate string %s\n", cp);
- return 0;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
/*
* Initialize the exports module.
@@ -1667,10 +1242,8 @@ nfsd_export_init(void)
void
nfsd_export_flush(void)
{
- exp_writelock();
cache_purge(&svc_expkey_cache);
cache_purge(&svc_export_cache);
- exp_writeunlock();
}
/*
@@ -1682,12 +1255,9 @@ nfsd_export_shutdown(void)
dprintk("nfsd: shutting down export module.\n");
- exp_writelock();
-
cache_unregister(&svc_expkey_cache);
cache_unregister(&svc_export_cache);
svcauth_unix_purge();
- exp_writeunlock();
dprintk("nfsd: export shutdown complete.\n");
}
diff --git a/fs/nfsd/lockd.c b/fs/nfsd/lockd.c
index 7c831a2..77e7a5c 100644
--- a/fs/nfsd/lockd.c
+++ b/fs/nfsd/lockd.c
@@ -35,10 +35,8 @@ nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
fh.fh_export = NULL;
- exp_readlock();
nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
fh_put(&fh);
- exp_readunlock();
/* We return nlm error codes as nlm doesn't know
* about nfsd, but nfsd does know about nlm..
*/
diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c
index ad88f1c..435a9be 100644
--- a/fs/nfsd/nfs4acl.c
+++ b/fs/nfsd/nfs4acl.c
@@ -36,6 +36,7 @@
#include <linux/slab.h>
#include <linux/nfs_fs.h>
+#include <linux/export.h>
#include "acl.h"
@@ -372,8 +373,10 @@ sort_pacl(struct posix_acl *pacl)
* by uid/gid. */
int i, j;
- if (pacl->a_count <= 4)
- return; /* no users or groups */
+ /* no users or groups */
+ if (!pacl || pacl->a_count <= 4)
+ return;
+
i = 1;
while (pacl->a_entries[i].e_tag == ACL_USER)
i++;
@@ -497,13 +500,12 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
/*
* ACLs with no ACEs are treated differently in the inheritable
- * and effective cases: when there are no inheritable ACEs, we
- * set a zero-length default posix acl:
+ * and effective cases: when there are no inheritable ACEs,
+ * calls ->set_acl with a NULL ACL structure.
*/
- if (state->empty && (flags & NFS4_ACL_TYPE_DEFAULT)) {
- pacl = posix_acl_alloc(0, GFP_KERNEL);
- return pacl ? pacl : ERR_PTR(-ENOMEM);
- }
+ if (state->empty && (flags & NFS4_ACL_TYPE_DEFAULT))
+ return NULL;
+
/*
* When there are no effective ACEs, the following will end
* up setting a 3-element effective posix ACL with all
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 02eb4ed..51b4f43 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -39,6 +39,8 @@
#define NFSDDBG_FACILITY NFSDDBG_PROC
+static void nfsd4_mark_cb_fault(struct nfs4_client *, int reason);
+
#define NFSPROC4_CB_NULL 0
#define NFSPROC4_CB_COMPOUND 1
@@ -351,7 +353,7 @@ static void encode_cb_recall4args(struct xdr_stream *xdr,
__be32 *p;
encode_nfs_cb_opnum4(xdr, OP_CB_RECALL);
- encode_stateid4(xdr, &dp->dl_stateid);
+ encode_stateid4(xdr, &dp->dl_stid.sc_stateid);
p = xdr_reserve_space(xdr, 4);
*p++ = xdr_zero; /* truncate */
@@ -460,6 +462,8 @@ static int decode_cb_sequence4resok(struct xdr_stream *xdr,
*/
status = 0;
out:
+ if (status)
+ nfsd4_mark_cb_fault(cb->cb_clp, status);
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
@@ -629,9 +633,11 @@ static int max_cb_time(void)
static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn, struct nfsd4_session *ses)
{
+ int maxtime = max_cb_time();
struct rpc_timeout timeparms = {
- .to_initval = max_cb_time(),
+ .to_initval = maxtime,
.to_retries = 0,
+ .to_maxval = maxtime,
};
struct rpc_create_args args = {
.net = &init_net,
@@ -686,6 +692,12 @@ static void nfsd4_mark_cb_down(struct nfs4_client *clp, int reason)
warn_no_callback_path(clp, reason);
}
+static void nfsd4_mark_cb_fault(struct nfs4_client *clp, int reason)
+{
+ clp->cl_cb_state = NFSD4_CB_FAULT;
+ warn_no_callback_path(clp, reason);
+}
+
static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
{
struct nfs4_client *clp = container_of(calldata, struct nfs4_client, cl_cb_null);
@@ -773,8 +785,12 @@ static bool nfsd41_cb_get_slot(struct nfs4_client *clp, struct rpc_task *task)
{
if (test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
rpc_sleep_on(&clp->cl_cb_waitq, task, NULL);
- dprintk("%s slot is busy\n", __func__);
- return false;
+ /* Race breaker */
+ if (test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {
+ dprintk("%s slot is busy\n", __func__);
+ return false;
+ }
+ rpc_wake_up_queued_task(&clp->cl_cb_waitq, task);
}
return true;
}
@@ -787,7 +803,7 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
{
struct nfsd4_callback *cb = calldata;
struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
- struct nfs4_client *clp = dp->dl_client;
+ struct nfs4_client *clp = dp->dl_stid.sc_client;
u32 minorversion = clp->cl_minorversion;
cb->cb_minorversion = minorversion;
@@ -809,7 +825,7 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
{
struct nfsd4_callback *cb = calldata;
struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
- struct nfs4_client *clp = dp->dl_client;
+ struct nfs4_client *clp = dp->dl_stid.sc_client;
dprintk("%s: minorversion=%d\n", __func__,
clp->cl_minorversion);
@@ -832,7 +848,7 @@ static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
{
struct nfsd4_callback *cb = calldata;
struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
- struct nfs4_client *clp = dp->dl_client;
+ struct nfs4_client *clp = dp->dl_stid.sc_client;
struct rpc_clnt *current_rpc_client = clp->cl_cb_client;
nfsd4_cb_done(task, calldata);
@@ -1006,7 +1022,7 @@ void nfsd4_do_callback_rpc(struct work_struct *w)
void nfsd4_cb_recall(struct nfs4_delegation *dp)
{
struct nfsd4_callback *cb = &dp->dl_recall;
- struct nfs4_client *clp = dp->dl_client;
+ struct nfs4_client *clp = dp->dl_stid.sc_client;
dp->dl_retries = 1;
cb->cb_op = dp;
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index d06a02c..9a959de 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -35,6 +35,7 @@
#include <linux/file.h>
#include <linux/slab.h>
+#include "idmap.h"
#include "cache.h"
#include "xdr4.h"
#include "vfs.h"
@@ -170,12 +171,30 @@ do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfs
return status;
}
+static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
+{
+ umode_t mode = fh->fh_dentry->d_inode->i_mode;
+
+ if (S_ISREG(mode))
+ return nfs_ok;
+ if (S_ISDIR(mode))
+ return nfserr_isdir;
+ /*
+ * Using err_symlink as our catch-all case may look odd; but
+ * there's no other obvious error for this case in 4.0, and we
+ * happen to know that it will cause the linux v4 client to do
+ * the right thing on attempts to open something other than a
+ * regular file.
+ */
+ return nfserr_symlink;
+}
+
static __be32
do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
{
struct svc_fh resfh;
+ int accmode;
__be32 status;
- int created = 0;
fh_init(&resfh, NFS4_FHSIZE);
open->op_truncate = 0;
@@ -204,7 +223,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
open->op_fname.len, &open->op_iattr,
&resfh, open->op_createmode,
(u32 *)open->op_verf.data,
- &open->op_truncate, &created);
+ &open->op_truncate, &open->op_created);
/*
* Following rfc 3530 14.2.16, use the returned bitmask
@@ -213,7 +232,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
*/
if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
- FATTR4_WORD1_TIME_MODIFY);
+ FATTR4_WORD1_TIME_MODIFY);
} else {
status = nfsd_lookup(rqstp, current_fh,
open->op_fname.data, open->op_fname.len, &resfh);
@@ -221,6 +240,9 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
}
if (status)
goto out;
+ status = nfsd_check_obj_isreg(&resfh);
+ if (status)
+ goto out;
if (is_create_with_attrs(open) && open->op_acl != NULL)
do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
@@ -229,11 +251,12 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
fh_dup2(current_fh, &resfh);
/* set reply cache */
- fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+ fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
&resfh.fh_handle);
- if (!created)
- status = do_open_permission(rqstp, current_fh, open,
- NFSD_MAY_NOP);
+ accmode = NFSD_MAY_NOP;
+ if (open->op_created)
+ accmode |= NFSD_MAY_OWNER_OVERRIDE;
+ status = do_open_permission(rqstp, current_fh, open, accmode);
out:
fh_put(&resfh);
@@ -244,6 +267,7 @@ static __be32
do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
{
__be32 status;
+ int accmode = 0;
/* Only reclaims from previously confirmed clients are valid */
if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
@@ -256,14 +280,24 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
/* set replay cache */
- fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+ fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
&current_fh->fh_handle);
open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
(open->op_iattr.ia_size == 0);
+ /*
+ * In the delegation case, the client is telling us about an
+ * open that it *already* performed locally, some time ago. We
+ * should let it succeed now if possible.
+ *
+ * In the case of a CLAIM_FH open, on the other hand, the client
+ * may be counting on us to enforce permissions (the Linux 4.1
+ * client uses this for normal opens, for example).
+ */
+ if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
+ accmode = NFSD_MAY_OWNER_OVERRIDE;
- status = do_open_permission(rqstp, current_fh, open,
- NFSD_MAY_OWNER_OVERRIDE);
+ status = do_open_permission(rqstp, current_fh, open, accmode);
return status;
}
@@ -285,14 +319,27 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
__be32 status;
struct nfsd4_compoundres *resp;
- dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
+ dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
(int)open->op_fname.len, open->op_fname.data,
- open->op_stateowner);
+ open->op_openowner);
/* This check required by spec. */
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
+ /* We don't yet support WANT bits: */
+ open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
+
+ open->op_created = 0;
+ /*
+ * RFC5661 18.51.3
+ * Before RECLAIM_COMPLETE done, server should deny new lock
+ */
+ if (nfsd4_has_session(cstate) &&
+ !cstate->session->se_client->cl_firststate &&
+ open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
+ return nfserr_grace;
+
if (nfsd4_has_session(cstate))
copy_clientid(&open->op_clientid, cstate->session);
@@ -302,7 +349,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
resp = rqstp->rq_resp;
status = nfsd4_process_open1(&resp->cstate, open);
if (status == nfserr_replay_me) {
- struct nfs4_replay *rp = &open->op_stateowner->so_replay;
+ struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
fh_put(&cstate->current_fh);
fh_copy_shallow(&cstate->current_fh.fh_handle,
&rp->rp_openfh);
@@ -332,32 +379,23 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
switch (open->op_claim_type) {
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
case NFS4_OPEN_CLAIM_NULL:
- /*
- * (1) set CURRENT_FH to the file being opened,
- * creating it if necessary, (2) set open->op_cinfo,
- * (3) set open->op_truncate if the file is to be
- * truncated after opening, (4) do permission checking.
- */
status = do_open_lookup(rqstp, &cstate->current_fh,
open);
if (status)
goto out;
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
- open->op_stateowner->so_confirmed = 1;
- /*
- * The CURRENT_FH is already set to the file being
- * opened. (1) set open->op_cinfo, (2) set
- * open->op_truncate if the file is to be truncated
- * after opening, (3) do permission checking.
- */
+ open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
+ case NFS4_OPEN_CLAIM_FH:
+ case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
status = do_open_fhandle(rqstp, &cstate->current_fh,
open);
if (status)
goto out;
break;
+ case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
case NFS4_OPEN_CLAIM_DELEGATE_PREV:
- open->op_stateowner->so_confirmed = 1;
+ open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
dprintk("NFSD: unsupported OPEN claim type %d\n",
open->op_claim_type);
status = nfserr_notsupp;
@@ -374,12 +412,13 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* set, (2) sets open->op_stateid, (3) sets open->op_delegation.
*/
status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
+ WARN_ON(status && open->op_created);
out:
- if (open->op_stateowner) {
- nfs4_get_stateowner(open->op_stateowner);
- cstate->replay_owner = open->op_stateowner;
- }
- nfs4_unlock_state();
+ nfsd4_cleanup_open_state(open, status);
+ if (open->op_openowner)
+ cstate->replay_owner = &open->op_openowner->oo_owner;
+ else
+ nfs4_unlock_state();
return status;
}
@@ -460,17 +499,12 @@ static __be32
nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_commit *commit)
{
- __be32 status;
-
u32 *p = (u32 *)commit->co_verf.data;
*p++ = nfssvc_boot.tv_sec;
*p++ = nfssvc_boot.tv_usec;
- status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
+ return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
commit->co_count);
- if (status == nfserr_symlink)
- status = nfserr_inval;
- return status;
}
static __be32
@@ -485,8 +519,6 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
NFSD_MAY_CREATE);
- if (status == nfserr_symlink)
- status = nfserr_notdir;
if (status)
return status;
@@ -497,15 +529,6 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
switch (create->cr_type) {
case NF4LNK:
- /* ugh! we have to null-terminate the linktext, or
- * vfs_symlink() will choke. it is always safe to
- * null-terminate by brute force, since at worst we
- * will overwrite the first byte of the create namelen
- * in the XDR buffer, which has already been extracted
- * during XDR decode.
- */
- create->cr_linkname[create->cr_linklen] = 0;
-
status = nfsd_symlink(rqstp, &cstate->current_fh,
create->cr_name, create->cr_namelen,
create->cr_linkname, create->cr_linklen,
@@ -712,8 +735,6 @@ nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return nfserr_grace;
status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
remove->rm_name, remove->rm_namelen);
- if (status == nfserr_symlink)
- return nfserr_notdir;
if (!status) {
fh_unlock(&cstate->current_fh);
set_change_info(&remove->rm_cinfo, &cstate->current_fh);
@@ -744,8 +765,6 @@ nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
(S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
status = nfserr_exist;
- else if (status == nfserr_symlink)
- status = nfserr_notdir;
if (!status) {
set_change_info(&rename->rn_sinfo, &cstate->current_fh);
@@ -863,14 +882,14 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
nfs4_lock_state();
status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
- if (filp)
- get_file(filp);
- nfs4_unlock_state();
-
if (status) {
+ nfs4_unlock_state();
dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
return status;
}
+ if (filp)
+ get_file(filp);
+ nfs4_unlock_state();
cnt = write->wr_buflen;
write->wr_how_written = write->wr_stable_how;
@@ -886,8 +905,6 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
write->wr_bytes_written = cnt;
- if (status == nfserr_symlink)
- status = nfserr_inval;
return status;
}
@@ -988,6 +1005,8 @@ static inline void nfsd4_increment_op_stats(u32 opnum)
typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
void *);
+typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
+
enum nfsd4_op_flags {
ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
@@ -995,12 +1014,31 @@ enum nfsd4_op_flags {
/* For rfc 5661 section 2.6.3.1.1: */
OP_HANDLES_WRONGSEC = 1 << 3,
OP_IS_PUTFH_LIKE = 1 << 4,
+ /*
+ * These are the ops whose result size we estimate before
+ * encoding, to avoid performing an op then not being able to
+ * respond or cache a response. This includes writes and setattrs
+ * as well as the operations usually called "nonidempotent":
+ */
+ OP_MODIFIES_SOMETHING = 1 << 5,
+ /*
+ * Cache compounds containing these ops in the xid-based drc:
+ * We use the DRC for compounds containing non-idempotent
+ * operations, *except* those that are 4.1-specific (since
+ * sessions provide their own EOS), and except for stateful
+ * operations other than setclientid and setclientid_confirm
+ * (since sequence numbers provide EOS for open, lock, etc in
+ * the v4.0 case).
+ */
+ OP_CACHEME = 1 << 6,
};
struct nfsd4_operation {
nfsd4op_func op_func;
u32 op_flags;
char *op_name;
+ /* Try to get response size before operation */
+ nfsd4op_rsize op_rsize_bop;
};
static struct nfsd4_operation nfsd4_ops[];
@@ -1045,6 +1083,11 @@ static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
return &nfsd4_ops[op->opnum];
}
+bool nfsd4_cache_this_op(struct nfsd4_op *op)
+{
+ return OPDESC(op)->op_flags & OP_CACHEME;
+}
+
static bool need_wrongsec_check(struct svc_rqst *rqstp)
{
struct nfsd4_compoundres *resp = rqstp->rq_resp;
@@ -1068,7 +1111,8 @@ static bool need_wrongsec_check(struct svc_rqst *rqstp)
*/
if (argp->opcnt == resp->opcnt)
return false;
-
+ if (next->opnum == OP_ILLEGAL)
+ return false;
nextd = OPDESC(next);
/*
* Rest of 2.6.3.1.1: certain operations will return WRONGSEC
@@ -1090,6 +1134,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
struct nfsd4_operation *opdesc;
struct nfsd4_compound_state *cstate = &resp->cstate;
int slack_bytes;
+ u32 plen = 0;
__be32 status;
resp->xbuf = &rqstp->rq_res;
@@ -1168,6 +1213,21 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
goto encode_op;
}
+ /* If op is non-idempotent */
+ if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
+ plen = opdesc->op_rsize_bop(rqstp, op);
+ /*
+ * If there's still another operation, make sure
+ * we'll have space to at least encode an error:
+ */
+ if (resp->opcnt < args->opcnt)
+ plen += COMPOUND_ERR_SLACK_SPACE;
+ op->status = nfsd4_check_resp_size(resp, plen);
+ }
+
+ if (op->status)
+ goto encode_op;
+
if (opdesc->op_func)
op->status = opdesc->op_func(rqstp, cstate, &op->u);
else
@@ -1197,7 +1257,7 @@ encode_op:
be32_to_cpu(status));
if (cstate->replay_owner) {
- nfs4_put_stateowner(cstate->replay_owner);
+ nfs4_unlock_state();
cstate->replay_owner = NULL;
}
/* XXX Ugh, we need to get rid of this kind of special case: */
@@ -1212,13 +1272,151 @@ encode_op:
fh_put(&resp->cstate.save_fh);
BUG_ON(resp->cstate.replay_owner);
out:
- nfsd4_release_compoundargs(args);
/* Reset deferral mechanism for RPC deferrals */
rqstp->rq_usedeferral = 1;
dprintk("nfsv4 compound returned %d\n", ntohl(status));
return status;
}
+#define op_encode_hdr_size (2)
+#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
+#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
+#define op_encode_change_info_maxsz (5)
+#define nfs4_fattr_bitmap_maxsz (4)
+
+#define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
+#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
+
+#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
+
+#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
+#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
+ op_encode_ace_maxsz)
+
+#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
+
+static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
+}
+
+static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_change_info_maxsz
+ + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_change_info_maxsz)
+ * sizeof(__be32);
+}
+
+static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
+ * sizeof(__be32);
+}
+
+static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_stateid_maxsz
+ + op_encode_change_info_maxsz + 1
+ + nfs4_fattr_bitmap_maxsz
+ + op_encode_delegation_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ u32 maxcount = 0, rlen = 0;
+
+ maxcount = svc_max_payload(rqstp);
+ rlen = op->u.read.rd_length;
+
+ if (rlen > maxcount)
+ rlen = maxcount;
+
+ return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
+}
+
+static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ u32 rlen = op->u.readdir.rd_maxcount;
+
+ if (rlen > PAGE_SIZE)
+ rlen = PAGE_SIZE;
+
+ return (op_encode_hdr_size + op_encode_verifier_maxsz)
+ * sizeof(__be32) + rlen;
+}
+
+static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_change_info_maxsz)
+ * sizeof(__be32);
+}
+
+static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_change_info_maxsz
+ + op_encode_change_info_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
+ sizeof(__be32);
+}
+
+static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
+ 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
+ 2 + /*eir_server_owner.so_minor_id */\
+ /* eir_server_owner.so_major_id<> */\
+ XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
+ /* eir_server_scope<> */\
+ XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
+ 1 + /* eir_server_impl_id array length */\
+ 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + \
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
+ 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
+}
+
+static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
+{
+ return (op_encode_hdr_size + \
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
+ 2 + /* csr_sequence, csr_flags */\
+ op_encode_channel_attrs_maxsz + \
+ op_encode_channel_attrs_maxsz) * sizeof(__be32);
+}
+
static struct nfsd4_operation nfsd4_ops[] = {
[OP_ACCESS] = {
.op_func = (nfsd4op_func)nfsd4_access,
@@ -1226,19 +1424,27 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_CLOSE] = {
.op_func = (nfsd4op_func)nfsd4_close,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_CLOSE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
},
[OP_COMMIT] = {
.op_func = (nfsd4op_func)nfsd4_commit,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_COMMIT",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
},
[OP_CREATE] = {
.op_func = (nfsd4op_func)nfsd4_create,
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_CREATE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
},
[OP_DELEGRETURN] = {
.op_func = (nfsd4op_func)nfsd4_delegreturn,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_DELEGRETURN",
+ .op_rsize_bop = nfsd4_only_status_rsize,
},
[OP_GETATTR] = {
.op_func = (nfsd4op_func)nfsd4_getattr,
@@ -1251,11 +1457,16 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_LINK] = {
.op_func = (nfsd4op_func)nfsd4_link,
+ .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
+ | OP_CACHEME,
.op_name = "OP_LINK",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
},
[OP_LOCK] = {
.op_func = (nfsd4op_func)nfsd4_lock,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_LOCK",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
},
[OP_LOCKT] = {
.op_func = (nfsd4op_func)nfsd4_lockt,
@@ -1263,7 +1474,9 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_LOCKU] = {
.op_func = (nfsd4op_func)nfsd4_locku,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_LOCKU",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
},
[OP_LOOKUP] = {
.op_func = (nfsd4op_func)nfsd4_lookup,
@@ -1281,42 +1494,54 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_OPEN] = {
.op_func = (nfsd4op_func)nfsd4_open,
- .op_flags = OP_HANDLES_WRONGSEC,
+ .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
.op_name = "OP_OPEN",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
},
[OP_OPEN_CONFIRM] = {
.op_func = (nfsd4op_func)nfsd4_open_confirm,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_OPEN_CONFIRM",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
},
[OP_OPEN_DOWNGRADE] = {
.op_func = (nfsd4op_func)nfsd4_open_downgrade,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_OPEN_DOWNGRADE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
},
[OP_PUTFH] = {
.op_func = (nfsd4op_func)nfsd4_putfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
.op_name = "OP_PUTFH",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_PUTPUBFH] = {
.op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
.op_name = "OP_PUTPUBFH",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_PUTROOTFH] = {
.op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
.op_name = "OP_PUTROOTFH",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_READ] = {
.op_func = (nfsd4op_func)nfsd4_read,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_READ",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
},
[OP_READDIR] = {
.op_func = (nfsd4op_func)nfsd4_readdir,
+ .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_READDIR",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
},
[OP_READLINK] = {
.op_func = (nfsd4op_func)nfsd4_readlink,
@@ -1324,27 +1549,36 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_REMOVE] = {
.op_func = (nfsd4op_func)nfsd4_remove,
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_REMOVE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
},
[OP_RENAME] = {
- .op_name = "OP_RENAME",
.op_func = (nfsd4op_func)nfsd4_rename,
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
+ .op_name = "OP_RENAME",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
},
[OP_RENEW] = {
.op_func = (nfsd4op_func)nfsd4_renew,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+ | OP_MODIFIES_SOMETHING,
.op_name = "OP_RENEW",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
+
},
[OP_RESTOREFH] = {
.op_func = (nfsd4op_func)nfsd4_restorefh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE,
+ | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
.op_name = "OP_RESTOREFH",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_SAVEFH] = {
.op_func = (nfsd4op_func)nfsd4_savefh,
- .op_flags = OP_HANDLES_WRONGSEC,
+ .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
.op_name = "OP_SAVEFH",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_SECINFO] = {
.op_func = (nfsd4op_func)nfsd4_secinfo,
@@ -1354,16 +1588,22 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_SETATTR] = {
.op_func = (nfsd4op_func)nfsd4_setattr,
.op_name = "OP_SETATTR",
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
},
[OP_SETCLIENTID] = {
.op_func = (nfsd4op_func)nfsd4_setclientid,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+ | OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_SETCLIENTID",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
},
[OP_SETCLIENTID_CONFIRM] = {
.op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+ | OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_SETCLIENTID_CONFIRM",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_VERIFY] = {
.op_func = (nfsd4op_func)nfsd4_verify,
@@ -1371,50 +1611,81 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
[OP_WRITE] = {
.op_func = (nfsd4op_func)nfsd4_write,
+ .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_WRITE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
},
[OP_RELEASE_LOCKOWNER] = {
.op_func = (nfsd4op_func)nfsd4_release_lockowner,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
+ | OP_MODIFIES_SOMETHING,
.op_name = "OP_RELEASE_LOCKOWNER",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
/* NFSv4.1 operations */
[OP_EXCHANGE_ID] = {
.op_func = (nfsd4op_func)nfsd4_exchange_id,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+ | OP_MODIFIES_SOMETHING,
.op_name = "OP_EXCHANGE_ID",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
},
[OP_BIND_CONN_TO_SESSION] = {
.op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+ | OP_MODIFIES_SOMETHING,
.op_name = "OP_BIND_CONN_TO_SESSION",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
},
[OP_CREATE_SESSION] = {
.op_func = (nfsd4op_func)nfsd4_create_session,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+ | OP_MODIFIES_SOMETHING,
.op_name = "OP_CREATE_SESSION",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
},
[OP_DESTROY_SESSION] = {
.op_func = (nfsd4op_func)nfsd4_destroy_session,
- .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+ | OP_MODIFIES_SOMETHING,
.op_name = "OP_DESTROY_SESSION",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_SEQUENCE] = {
.op_func = (nfsd4op_func)nfsd4_sequence,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
.op_name = "OP_SEQUENCE",
},
+ [OP_DESTROY_CLIENTID] = {
+ .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
+ | OP_MODIFIES_SOMETHING,
+ .op_name = "OP_DESTROY_CLIENTID",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
+ },
[OP_RECLAIM_COMPLETE] = {
.op_func = (nfsd4op_func)nfsd4_reclaim_complete,
- .op_flags = ALLOWED_WITHOUT_FH,
+ .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
.op_name = "OP_RECLAIM_COMPLETE",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_SECINFO_NO_NAME] = {
.op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
.op_flags = OP_HANDLES_WRONGSEC,
.op_name = "OP_SECINFO_NO_NAME",
},
+ [OP_TEST_STATEID] = {
+ .op_func = (nfsd4op_func)nfsd4_test_stateid,
+ .op_flags = ALLOWED_WITHOUT_FH,
+ .op_name = "OP_TEST_STATEID",
+ },
+ [OP_FREE_STATEID] = {
+ .op_func = (nfsd4op_func)nfsd4_free_stateid,
+ .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
+ .op_name = "OP_FREE_STATEID",
+ .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
+ },
};
static const char *nfsd4_op_name(unsigned opnum)
@@ -1427,16 +1698,6 @@ static const char *nfsd4_op_name(unsigned opnum)
#define nfsd4_voidres nfsd4_voidargs
struct nfsd4_voidargs { int dummy; };
-/*
- * TODO: At the present time, the NFSv4 server does not do XID caching
- * of requests. Implementing XID caching would not be a serious problem,
- * although it would require a mild change in interfaces since one
- * doesn't know whether an NFSv4 request is idempotent until after the
- * XDR decode. However, XID caching totally confuses pynfs (Peter
- * Astrand's regression testsuite for NFSv4 servers), which reuses
- * XID's liberally, so I've left it unimplemented until pynfs generates
- * better XID's.
- */
static struct svc_procedure nfsd_procedures4[2] = {
[NFSPROC4_NULL] = {
.pc_func = (svc_procfunc) nfsd4_proc_null,
@@ -1452,6 +1713,7 @@ static struct svc_procedure nfsd_procedures4[2] = {
.pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
.pc_argsize = sizeof(struct nfsd4_compoundargs),
.pc_ressize = sizeof(struct nfsd4_compoundres),
+ .pc_release = nfsd4_release_compoundargs,
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = NFSD_BUFSIZE/4,
},
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index be26814..ed083b9 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -45,6 +45,7 @@
/* Globals */
static struct file *rec_file;
+static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
static int
nfs4_save_creds(const struct cred **original_creds)
@@ -129,6 +130,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
if (!rec_file || clp->cl_firststate)
return 0;
+ clp->cl_firststate = 1;
status = nfs4_save_creds(&original_cred);
if (status < 0)
return status;
@@ -143,10 +145,8 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
goto out_unlock;
}
status = -EEXIST;
- if (dentry->d_inode) {
- dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
+ if (dentry->d_inode)
goto out_put;
- }
status = mnt_want_write(rec_file->f_path.mnt);
if (status)
goto out_put;
@@ -156,12 +156,14 @@ out_put:
dput(dentry);
out_unlock:
mutex_unlock(&dir->d_inode->i_mutex);
- if (status == 0) {
- clp->cl_firststate = 1;
+ if (status == 0)
vfs_fsync(rec_file, 0);
- }
+ else
+ printk(KERN_ERR "NFSD: failed to write recovery record"
+ " (err %d); please check that %s exists"
+ " and is writeable", status,
+ user_recovery_dirname);
nfs4_reset_creds(original_cred);
- dprintk("NFSD: nfsd4_create_clid_dir returns %d\n", status);
return status;
}
@@ -191,52 +193,42 @@ nfsd4_build_namelist(void *arg, const char *name, int namlen,
}
static int
-nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
+nfsd4_list_rec_dir(recdir_func *f)
{
const struct cred *original_cred;
- struct file *filp;
+ struct dentry *dir = rec_file->f_path.dentry;
LIST_HEAD(names);
- struct name_list *entry;
- struct dentry *dentry;
int status;
- if (!rec_file)
- return 0;
-
status = nfs4_save_creds(&original_cred);
if (status < 0)
return status;
- filp = dentry_open(dget(dir), mntget(rec_file->f_path.mnt), O_RDONLY,
- current_cred());
- status = PTR_ERR(filp);
- if (IS_ERR(filp))
- goto out;
- status = vfs_readdir(filp, nfsd4_build_namelist, &names);
- fput(filp);
+ status = vfs_llseek(rec_file, 0, SEEK_SET);
+ if (status < 0) {
+ nfs4_reset_creds(original_cred);
+ return status;
+ }
+
+ status = vfs_readdir(rec_file, nfsd4_build_namelist, &names);
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
while (!list_empty(&names)) {
+ struct name_list *entry;
entry = list_entry(names.next, struct name_list, list);
-
- dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
- if (IS_ERR(dentry)) {
- status = PTR_ERR(dentry);
- break;
+ if (!status) {
+ struct dentry *dentry;
+ dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
+ if (IS_ERR(dentry)) {
+ status = PTR_ERR(dentry);
+ break;
+ }
+ status = f(dir, dentry);
+ dput(dentry);
}
- status = f(dir, dentry);
- dput(dentry);
- if (status)
- break;
list_del(&entry->list);
kfree(entry);
}
mutex_unlock(&dir->d_inode->i_mutex);
-out:
- while (!list_empty(&names)) {
- entry = list_entry(names.next, struct name_list, list);
- list_del(&entry->list);
- kfree(entry);
- }
nfs4_reset_creds(original_cred);
return status;
}
@@ -322,7 +314,7 @@ nfsd4_recdir_purge_old(void) {
status = mnt_want_write(rec_file->f_path.mnt);
if (status)
goto out;
- status = nfsd4_list_rec_dir(rec_file->f_path.dentry, purge_old);
+ status = nfsd4_list_rec_dir(purge_old);
if (status == 0)
vfs_fsync(rec_file, 0);
mnt_drop_write(rec_file->f_path.mnt);
@@ -352,7 +344,7 @@ nfsd4_recdir_load(void) {
if (!rec_file)
return 0;
- status = nfsd4_list_rec_dir(rec_file->f_path.dentry, load_recdir);
+ status = nfsd4_list_rec_dir(load_recdir);
if (status)
printk("nfsd4: failed loading clients from recovery"
" directory %s\n", rec_file->f_path.dentry->d_name.name);
@@ -364,13 +356,13 @@ nfsd4_recdir_load(void) {
*/
void
-nfsd4_init_recdir(char *rec_dirname)
+nfsd4_init_recdir()
{
const struct cred *original_cred;
int status;
printk("NFSD: Using %s as the NFSv4 state recovery directory\n",
- rec_dirname);
+ user_recovery_dirname);
BUG_ON(rec_file);
@@ -382,10 +374,10 @@ nfsd4_init_recdir(char *rec_dirname)
return;
}
- rec_file = filp_open(rec_dirname, O_RDONLY | O_DIRECTORY, 0);
+ rec_file = filp_open(user_recovery_dirname, O_RDONLY | O_DIRECTORY, 0);
if (IS_ERR(rec_file)) {
printk("NFSD: unable to find recovery directory %s\n",
- rec_dirname);
+ user_recovery_dirname);
rec_file = NULL;
}
@@ -400,3 +392,30 @@ nfsd4_shutdown_recdir(void)
fput(rec_file);
rec_file = NULL;
}
+
+/*
+ * Change the NFSv4 recovery directory to recdir.
+ */
+int
+nfs4_reset_recoverydir(char *recdir)
+{
+ int status;
+ struct path path;
+
+ status = kern_path(recdir, LOOKUP_FOLLOW, &path);
+ if (status)
+ return status;
+ status = -ENOTDIR;
+ if (S_ISDIR(path.dentry->d_inode->i_mode)) {
+ strcpy(user_recovery_dirname, recdir);
+ status = 0;
+ }
+ path_put(&path);
+ return status;
+}
+
+char *
+nfs4_recoverydir(void)
+{
+ return user_recovery_dirname;
+}
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 4ec38df..d455ea0 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -37,6 +37,7 @@
#include <linux/slab.h>
#include <linux/namei.h>
#include <linux/swap.h>
+#include <linux/pagemap.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/clnt.h>
#include "xdr4.h"
@@ -48,9 +49,6 @@
time_t nfsd4_lease = 90; /* default lease time */
time_t nfsd4_grace = 90;
static time_t boot_time;
-static u32 current_ownerid = 1;
-static u32 current_fileid = 1;
-static u32 current_delegid = 1;
static stateid_t zerostateid; /* bits all 0 */
static stateid_t onestateid; /* bits all 1 */
static u64 current_sessionid = 1;
@@ -59,10 +57,7 @@ static u64 current_sessionid = 1;
#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
/* forward declarations */
-static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
-static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
-static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
-static void nfs4_set_recdir(char *recdir);
+static int check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner);
/* Locking: */
@@ -76,7 +71,8 @@ static DEFINE_MUTEX(client_mutex);
*/
static DEFINE_SPINLOCK(recall_lock);
-static struct kmem_cache *stateowner_slab = NULL;
+static struct kmem_cache *openowner_slab = NULL;
+static struct kmem_cache *lockowner_slab = NULL;
static struct kmem_cache *file_slab = NULL;
static struct kmem_cache *stateid_slab = NULL;
static struct kmem_cache *deleg_slab = NULL;
@@ -108,6 +104,11 @@ opaque_hashval(const void *ptr, int nbytes)
static struct list_head del_recall_lru;
+static void nfsd4_free_file(struct nfs4_file *f)
+{
+ kmem_cache_free(file_slab, f);
+}
+
static inline void
put_nfs4_file(struct nfs4_file *fi)
{
@@ -115,7 +116,7 @@ put_nfs4_file(struct nfs4_file *fi)
list_del(&fi->fi_hash);
spin_unlock(&recall_lock);
iput(fi->fi_inode);
- kmem_cache_free(file_slab, fi);
+ nfsd4_free_file(fi);
}
}
@@ -132,35 +133,33 @@ unsigned int max_delegations;
* Open owner state (share locks)
*/
-/* hash tables for nfs4_stateowner */
-#define OWNER_HASH_BITS 8
-#define OWNER_HASH_SIZE (1 << OWNER_HASH_BITS)
-#define OWNER_HASH_MASK (OWNER_HASH_SIZE - 1)
+/* hash tables for open owners */
+#define OPEN_OWNER_HASH_BITS 8
+#define OPEN_OWNER_HASH_SIZE (1 << OPEN_OWNER_HASH_BITS)
+#define OPEN_OWNER_HASH_MASK (OPEN_OWNER_HASH_SIZE - 1)
-#define ownerid_hashval(id) \
- ((id) & OWNER_HASH_MASK)
-#define ownerstr_hashval(clientid, ownername) \
- (((clientid) + opaque_hashval((ownername.data), (ownername.len))) & OWNER_HASH_MASK)
+static unsigned int open_ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername)
+{
+ unsigned int ret;
-static struct list_head ownerid_hashtbl[OWNER_HASH_SIZE];
-static struct list_head ownerstr_hashtbl[OWNER_HASH_SIZE];
+ ret = opaque_hashval(ownername->data, ownername->len);
+ ret += clientid;
+ return ret & OPEN_OWNER_HASH_MASK;
+}
+
+static struct list_head open_ownerstr_hashtbl[OPEN_OWNER_HASH_SIZE];
/* hash table for nfs4_file */
#define FILE_HASH_BITS 8
#define FILE_HASH_SIZE (1 << FILE_HASH_BITS)
-/* hash table for (open)nfs4_stateid */
-#define STATEID_HASH_BITS 10
-#define STATEID_HASH_SIZE (1 << STATEID_HASH_BITS)
-#define STATEID_HASH_MASK (STATEID_HASH_SIZE - 1)
-
-#define file_hashval(x) \
- hash_ptr(x, FILE_HASH_BITS)
-#define stateid_hashval(owner_id, file_id) \
- (((owner_id) + (file_id)) & STATEID_HASH_MASK)
+static unsigned int file_hashval(struct inode *ino)
+{
+ /* XXX: why are we hashing on inode pointer, anyway? */
+ return hash_ptr(ino, FILE_HASH_BITS);
+}
static struct list_head file_hashtbl[FILE_HASH_SIZE];
-static struct list_head stateid_hashtbl[STATEID_HASH_SIZE];
static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag)
{
@@ -203,8 +202,73 @@ static void nfs4_file_put_access(struct nfs4_file *fp, int oflag)
__nfs4_file_put_access(fp, oflag);
}
+static inline int get_new_stid(struct nfs4_stid *stid)
+{
+ static int min_stateid = 0;
+ struct idr *stateids = &stid->sc_client->cl_stateids;
+ int new_stid;
+ int error;
+
+ error = idr_get_new_above(stateids, stid, min_stateid, &new_stid);
+ /*
+ * Note: the necessary preallocation was done in
+ * nfs4_alloc_stateid(). The idr code caps the number of
+ * preallocations that can exist at a time, but the state lock
+ * prevents anyone from using ours before we get here:
+ */
+ BUG_ON(error);
+ /*
+ * It shouldn't be a problem to reuse an opaque stateid value.
+ * I don't think it is for 4.1. But with 4.0 I worry that, for
+ * example, a stray write retransmission could be accepted by
+ * the server when it should have been rejected. Therefore,
+ * adopt a trick from the sctp code to attempt to maximize the
+ * amount of time until an id is reused, by ensuring they always
+ * "increase" (mod INT_MAX):
+ */
+
+ min_stateid = new_stid+1;
+ if (min_stateid == INT_MAX)
+ min_stateid = 0;
+ return new_stid;
+}
+
+static void init_stid(struct nfs4_stid *stid, struct nfs4_client *cl, unsigned char type)
+{
+ stateid_t *s = &stid->sc_stateid;
+ int new_id;
+
+ stid->sc_type = type;
+ stid->sc_client = cl;
+ s->si_opaque.so_clid = cl->cl_clientid;
+ new_id = get_new_stid(stid);
+ s->si_opaque.so_id = (u32)new_id;
+ /* Will be incremented before return to client: */
+ s->si_generation = 0;
+}
+
+static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab)
+{
+ struct idr *stateids = &cl->cl_stateids;
+
+ if (!idr_pre_get(stateids, GFP_KERNEL))
+ return NULL;
+ /*
+ * Note: if we fail here (or any time between now and the time
+ * we actually get the new idr), we won't need to undo the idr
+ * preallocation, since the idr code caps the number of
+ * preallocated entries.
+ */
+ return kmem_cache_alloc(slab, GFP_KERNEL);
+}
+
+static struct nfs4_ol_stateid * nfs4_alloc_stateid(struct nfs4_client *clp)
+{
+ return openlockstateid(nfs4_alloc_stid(clp, stateid_slab));
+}
+
static struct nfs4_delegation *
-alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type)
+alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct svc_fh *current_fh, u32 type)
{
struct nfs4_delegation *dp;
struct nfs4_file *fp = stp->st_file;
@@ -221,21 +285,23 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
return NULL;
if (num_delegations > max_delegations)
return NULL;
- dp = kmem_cache_alloc(deleg_slab, GFP_KERNEL);
+ dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab));
if (dp == NULL)
return dp;
+ init_stid(&dp->dl_stid, clp, NFS4_DELEG_STID);
+ /*
+ * delegation seqid's are never incremented. The 4.1 special
+ * meaning of seqid 0 isn't meaningful, really, but let's avoid
+ * 0 anyway just for consistency and use 1:
+ */
+ dp->dl_stid.sc_stateid.si_generation = 1;
num_delegations++;
INIT_LIST_HEAD(&dp->dl_perfile);
INIT_LIST_HEAD(&dp->dl_perclnt);
INIT_LIST_HEAD(&dp->dl_recall_lru);
- dp->dl_client = clp;
get_nfs4_file(fp);
dp->dl_file = fp;
dp->dl_type = type;
- dp->dl_stateid.si_boot = boot_time;
- dp->dl_stateid.si_stateownerid = current_delegid++;
- dp->dl_stateid.si_fileid = 0;
- dp->dl_stateid.si_generation = 0;
fh_copy_shallow(&dp->dl_fh, &current_fh->fh_handle);
dp->dl_time = 0;
atomic_set(&dp->dl_count, 1);
@@ -264,12 +330,29 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp)
}
}
+static void unhash_stid(struct nfs4_stid *s)
+{
+ struct idr *stateids = &s->sc_client->cl_stateids;
+
+ idr_remove(stateids, s->sc_stateid.si_opaque.so_id);
+}
+
+static void
+hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
+{
+ lockdep_assert_held(&recall_lock);
+
+ list_add(&dp->dl_perfile, &fp->fi_delegations);
+ list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
+}
+
/* Called under the state lock. */
static void
unhash_delegation(struct nfs4_delegation *dp)
{
- list_del_init(&dp->dl_perclnt);
+ unhash_stid(&dp->dl_stid);
spin_lock(&recall_lock);
+ list_del_init(&dp->dl_perclnt);
list_del_init(&dp->dl_perfile);
list_del_init(&dp->dl_recall_lru);
spin_unlock(&recall_lock);
@@ -289,10 +372,16 @@ static DEFINE_SPINLOCK(client_lock);
#define CLIENT_HASH_SIZE (1 << CLIENT_HASH_BITS)
#define CLIENT_HASH_MASK (CLIENT_HASH_SIZE - 1)
-#define clientid_hashval(id) \
- ((id) & CLIENT_HASH_MASK)
-#define clientstr_hashval(name) \
- (opaque_hashval((name), 8) & CLIENT_HASH_MASK)
+static unsigned int clientid_hashval(u32 id)
+{
+ return id & CLIENT_HASH_MASK;
+}
+
+static unsigned int clientstr_hashval(const char *name)
+{
+ return opaque_hashval(name, 8) & CLIENT_HASH_MASK;
+}
+
/*
* reclaim_str_hashtbl[] holds known client info from previous reset/reboot
* used in reboot/reset lease grace period processing
@@ -359,7 +448,7 @@ set_deny(unsigned int *deny, unsigned long bmap) {
}
static int
-test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {
+test_share(struct nfs4_ol_stateid *stp, struct nfsd4_open *open) {
unsigned int access, deny;
set_access(&access, stp->st_access_bmap);
@@ -382,14 +471,13 @@ static int nfs4_access_to_omode(u32 access)
BUG();
}
-static void unhash_generic_stateid(struct nfs4_stateid *stp)
+static void unhash_generic_stateid(struct nfs4_ol_stateid *stp)
{
- list_del(&stp->st_hash);
list_del(&stp->st_perfile);
list_del(&stp->st_perstateowner);
}
-static void free_generic_stateid(struct nfs4_stateid *stp)
+static void close_generic_stateid(struct nfs4_ol_stateid *stp)
{
int i;
@@ -398,84 +486,106 @@ static void free_generic_stateid(struct nfs4_stateid *stp)
if (test_bit(i, &stp->st_access_bmap))
nfs4_file_put_access(stp->st_file,
nfs4_access_to_omode(i));
+ __clear_bit(i, &stp->st_access_bmap);
}
}
put_nfs4_file(stp->st_file);
+ stp->st_file = NULL;
+}
+
+static void free_generic_stateid(struct nfs4_ol_stateid *stp)
+{
kmem_cache_free(stateid_slab, stp);
}
-static void release_lock_stateid(struct nfs4_stateid *stp)
+static void release_lock_stateid(struct nfs4_ol_stateid *stp)
{
struct file *file;
unhash_generic_stateid(stp);
+ unhash_stid(&stp->st_stid);
file = find_any_file(stp->st_file);
if (file)
- locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
+ locks_remove_posix(file, (fl_owner_t)lockowner(stp->st_stateowner));
+ close_generic_stateid(stp);
free_generic_stateid(stp);
}
-static void unhash_lockowner(struct nfs4_stateowner *sop)
+static void unhash_lockowner(struct nfs4_lockowner *lo)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
- list_del(&sop->so_idhash);
- list_del(&sop->so_strhash);
- list_del(&sop->so_perstateid);
- while (!list_empty(&sop->so_stateids)) {
- stp = list_first_entry(&sop->so_stateids,
- struct nfs4_stateid, st_perstateowner);
+ list_del(&lo->lo_owner.so_strhash);
+ list_del(&lo->lo_perstateid);
+ while (!list_empty(&lo->lo_owner.so_stateids)) {
+ stp = list_first_entry(&lo->lo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
release_lock_stateid(stp);
}
}
-static void release_lockowner(struct nfs4_stateowner *sop)
+static void release_lockowner(struct nfs4_lockowner *lo)
{
- unhash_lockowner(sop);
- nfs4_put_stateowner(sop);
+ unhash_lockowner(lo);
+ nfs4_free_lockowner(lo);
}
static void
-release_stateid_lockowners(struct nfs4_stateid *open_stp)
+release_stateid_lockowners(struct nfs4_ol_stateid *open_stp)
{
- struct nfs4_stateowner *lock_sop;
+ struct nfs4_lockowner *lo;
while (!list_empty(&open_stp->st_lockowners)) {
- lock_sop = list_entry(open_stp->st_lockowners.next,
- struct nfs4_stateowner, so_perstateid);
- /* list_del(&open_stp->st_lockowners); */
- BUG_ON(lock_sop->so_is_open_owner);
- release_lockowner(lock_sop);
+ lo = list_entry(open_stp->st_lockowners.next,
+ struct nfs4_lockowner, lo_perstateid);
+ release_lockowner(lo);
}
}
-static void release_open_stateid(struct nfs4_stateid *stp)
+static void unhash_open_stateid(struct nfs4_ol_stateid *stp)
{
unhash_generic_stateid(stp);
release_stateid_lockowners(stp);
+ close_generic_stateid(stp);
+}
+
+static void release_open_stateid(struct nfs4_ol_stateid *stp)
+{
+ unhash_open_stateid(stp);
+ unhash_stid(&stp->st_stid);
free_generic_stateid(stp);
}
-static void unhash_openowner(struct nfs4_stateowner *sop)
+static void unhash_openowner(struct nfs4_openowner *oo)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
- list_del(&sop->so_idhash);
- list_del(&sop->so_strhash);
- list_del(&sop->so_perclient);
- list_del(&sop->so_perstateid); /* XXX: necessary? */
- while (!list_empty(&sop->so_stateids)) {
- stp = list_first_entry(&sop->so_stateids,
- struct nfs4_stateid, st_perstateowner);
+ list_del(&oo->oo_owner.so_strhash);
+ list_del(&oo->oo_perclient);
+ while (!list_empty(&oo->oo_owner.so_stateids)) {
+ stp = list_first_entry(&oo->oo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
release_open_stateid(stp);
}
}
-static void release_openowner(struct nfs4_stateowner *sop)
+static void release_last_closed_stateid(struct nfs4_openowner *oo)
{
- unhash_openowner(sop);
- list_del(&sop->so_close_lru);
- nfs4_put_stateowner(sop);
+ struct nfs4_ol_stateid *s = oo->oo_last_closed_stid;
+
+ if (s) {
+ unhash_stid(&s->st_stid);
+ free_generic_stateid(s);
+ oo->oo_last_closed_stid = NULL;
+ }
+}
+
+static void release_openowner(struct nfs4_openowner *oo)
+{
+ unhash_openowner(oo);
+ list_del(&oo->oo_close_lru);
+ release_last_closed_stateid(oo);
+ nfs4_free_openowner(oo);
}
#define SESSION_HASH_SIZE 512
@@ -840,9 +950,6 @@ renew_client_locked(struct nfs4_client *clp)
return;
}
- /*
- * Move client to the end to the LRU list.
- */
dprintk("renewing client (clientid %08x/%08x)\n",
clp->cl_clientid.cl_boot,
clp->cl_clientid.cl_id);
@@ -888,6 +995,18 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
}
memcpy(clp->cl_name.data, name.data, name.len);
clp->cl_name.len = name.len;
+ INIT_LIST_HEAD(&clp->cl_sessions);
+ idr_init(&clp->cl_stateids);
+ atomic_set(&clp->cl_refcount, 0);
+ clp->cl_cb_state = NFSD4_CB_UNKNOWN;
+ INIT_LIST_HEAD(&clp->cl_idhash);
+ INIT_LIST_HEAD(&clp->cl_strhash);
+ INIT_LIST_HEAD(&clp->cl_openowners);
+ INIT_LIST_HEAD(&clp->cl_delegations);
+ INIT_LIST_HEAD(&clp->cl_lru);
+ INIT_LIST_HEAD(&clp->cl_callbacks);
+ spin_lock_init(&clp->cl_lock);
+ rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table");
return clp;
}
@@ -901,10 +1020,13 @@ free_client(struct nfs4_client *clp)
list_del(&ses->se_perclnt);
nfsd4_put_session(ses);
}
+ rpc_destroy_wait_queue(&clp->cl_cb_waitq);
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
kfree(clp->cl_principal);
kfree(clp->cl_name.data);
+ idr_remove_all(&clp->cl_stateids);
+ idr_destroy(&clp->cl_stateids);
kfree(clp);
}
@@ -940,7 +1062,7 @@ unhash_client_locked(struct nfs4_client *clp)
static void
expire_client(struct nfs4_client *clp)
{
- struct nfs4_stateowner *sop;
+ struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
struct list_head reaplist;
@@ -958,8 +1080,8 @@ expire_client(struct nfs4_client *clp)
unhash_delegation(dp);
}
while (!list_empty(&clp->cl_openowners)) {
- sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
- release_openowner(sop);
+ oo = list_entry(clp->cl_openowners.next, struct nfs4_openowner, oo_perclient);
+ release_openowner(oo);
}
nfsd4_shutdown_callback(clp);
if (clp->cl_cb_conn.cb_xprt)
@@ -1035,6 +1157,23 @@ static void gen_confirm(struct nfs4_client *clp)
*p++ = i++;
}
+static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t)
+{
+ return idr_find(&cl->cl_stateids, t->si_opaque.so_id);
+}
+
+static struct nfs4_stid *find_stateid_by_type(struct nfs4_client *cl, stateid_t *t, char typemask)
+{
+ struct nfs4_stid *s;
+
+ s = find_stateid(cl, t);
+ if (!s)
+ return NULL;
+ if (typemask & s->sc_type)
+ return s;
+ return NULL;
+}
+
static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
struct svc_rqst *rqstp, nfs4_verifier *verf)
{
@@ -1046,7 +1185,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
if (clp == NULL)
return NULL;
- INIT_LIST_HEAD(&clp->cl_sessions);
princ = svc_gss_principal(rqstp);
if (princ) {
@@ -1058,19 +1196,9 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
}
memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
- atomic_set(&clp->cl_refcount, 0);
- clp->cl_cb_state = NFSD4_CB_UNKNOWN;
- INIT_LIST_HEAD(&clp->cl_idhash);
- INIT_LIST_HEAD(&clp->cl_strhash);
- INIT_LIST_HEAD(&clp->cl_openowners);
- INIT_LIST_HEAD(&clp->cl_delegations);
- INIT_LIST_HEAD(&clp->cl_lru);
- INIT_LIST_HEAD(&clp->cl_callbacks);
- spin_lock_init(&clp->cl_lock);
INIT_WORK(&clp->cl_cb_null.cb_work, nfsd4_do_callback_rpc);
clp->cl_time = get_seconds();
clear_bit(0, &clp->cl_cb_slot_busy);
- rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table");
copy_verf(clp, verf);
rpc_copy_addr((struct sockaddr *) &clp->cl_addr, sa);
clp->cl_flavor = rqstp->rq_flavor;
@@ -1080,17 +1208,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
return clp;
}
-static int check_name(struct xdr_netobj name)
-{
- if (name.len == 0)
- return 0;
- if (name.len > NFS4_OPAQUE_LIMIT) {
- dprintk("NFSD: check_name: name too long(%d)!\n", name.len);
- return 0;
- }
- return 1;
-}
-
static void
add_to_unconfirmed(struct nfs4_client *clp, unsigned int strhashval)
{
@@ -1122,8 +1239,10 @@ find_confirmed_client(clientid_t *clid)
unsigned int idhashval = clientid_hashval(clid->cl_id);
list_for_each_entry(clp, &conf_id_hashtbl[idhashval], cl_idhash) {
- if (same_clid(&clp->cl_clientid, clid))
+ if (same_clid(&clp->cl_clientid, clid)) {
+ renew_client(clp);
return clp;
+ }
}
return NULL;
}
@@ -1170,20 +1289,6 @@ find_unconfirmed_client_by_str(const char *dname, unsigned int hashval)
return NULL;
}
-static void rpc_svcaddr2sockaddr(struct sockaddr *sa, unsigned short family, union svc_addr_u *svcaddr)
-{
- switch (family) {
- case AF_INET:
- ((struct sockaddr_in *)sa)->sin_family = AF_INET;
- ((struct sockaddr_in *)sa)->sin_addr = svcaddr->addr;
- return;
- case AF_INET6:
- ((struct sockaddr_in6 *)sa)->sin6_family = AF_INET6;
- ((struct sockaddr_in6 *)sa)->sin6_addr = svcaddr->addr6;
- return;
- }
-}
-
static void
gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_rqst *rqstp)
{
@@ -1215,7 +1320,7 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_r
conn->cb_prog = se->se_callback_prog;
conn->cb_ident = se->se_callback_ident;
- rpc_svcaddr2sockaddr((struct sockaddr *)&conn->cb_saddr, expected_family, &rqstp->rq_daddr);
+ memcpy(&conn->cb_saddr, &rqstp->rq_daddr, rqstp->rq_daddrlen);
return;
out_err:
conn->cb_addr.ss_family = AF_UNSPEC;
@@ -1347,7 +1452,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
__func__, rqstp, exid, exid->clname.len, exid->clname.data,
addr_str, exid->flags, exid->spa_how);
- if (!check_name(exid->clname) || (exid->flags & ~EXCHGID4_FLAG_MASK_A))
+ if (exid->flags & ~EXCHGID4_FLAG_MASK_A)
return nfserr_inval;
/* Currently only support SP4_NONE */
@@ -1503,6 +1608,29 @@ nfsd4_replay_create_session(struct nfsd4_create_session *cr_ses,
return slot->sl_status;
}
+#define NFSD_MIN_REQ_HDR_SEQ_SZ ((\
+ 2 * 2 + /* credential,verifier: AUTH_NULL, length 0 */ \
+ 1 + /* MIN tag is length with zero, only length */ \
+ 3 + /* version, opcount, opcode */ \
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
+ /* seqid, slotID, slotID, cache */ \
+ 4 ) * sizeof(__be32))
+
+#define NFSD_MIN_RESP_HDR_SEQ_SZ ((\
+ 2 + /* verifier: AUTH_NULL, length 0 */\
+ 1 + /* status */ \
+ 1 + /* MIN tag is length with zero, only length */ \
+ 3 + /* opcount, opcode, opstatus*/ \
+ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
+ /* seqid, slotID, slotID, slotID, status */ \
+ 5 ) * sizeof(__be32))
+
+static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs fchannel)
+{
+ return fchannel.maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ
+ || fchannel.maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ;
+}
+
__be32
nfsd4_create_session(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@@ -1571,6 +1699,10 @@ nfsd4_create_session(struct svc_rqst *rqstp,
cr_ses->flags &= ~SESSION4_PERSIST;
cr_ses->flags &= ~SESSION4_RDMA;
+ status = nfserr_toosmall;
+ if (check_forechannel_attrs(cr_ses->fore_channel))
+ goto out;
+
status = nfserr_jukebox;
new = alloc_init_session(rqstp, conf, cr_ses);
if (!new)
@@ -1732,6 +1864,14 @@ static bool nfsd4_session_too_many_ops(struct svc_rqst *rqstp, struct nfsd4_sess
return args->opcnt > session->se_fchannel.maxops;
}
+static bool nfsd4_request_too_big(struct svc_rqst *rqstp,
+ struct nfsd4_session *session)
+{
+ struct xdr_buf *xb = &rqstp->rq_arg;
+
+ return xb->len > session->se_fchannel.maxreq_sz;
+}
+
__be32
nfsd4_sequence(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@@ -1764,6 +1904,10 @@ nfsd4_sequence(struct svc_rqst *rqstp,
if (nfsd4_session_too_many_ops(rqstp, session))
goto out;
+ status = nfserr_req_too_big;
+ if (nfsd4_request_too_big(rqstp, session))
+ goto out;
+
status = nfserr_badslot;
if (seq->slotid >= session->se_fchannel.maxreqs)
goto out;
@@ -1807,8 +1951,16 @@ out:
nfsd4_get_session(cstate->session);
atomic_inc(&clp->cl_refcount);
- if (clp->cl_cb_state == NFSD4_CB_DOWN)
- seq->status_flags |= SEQ4_STATUS_CB_PATH_DOWN;
+ switch (clp->cl_cb_state) {
+ case NFSD4_CB_DOWN:
+ seq->status_flags = SEQ4_STATUS_CB_PATH_DOWN;
+ break;
+ case NFSD4_CB_FAULT:
+ seq->status_flags = SEQ4_STATUS_BACKCHANNEL_FAULT;
+ break;
+ default:
+ seq->status_flags = 0;
+ }
}
kfree(conn);
spin_unlock(&client_lock);
@@ -1816,6 +1968,50 @@ out:
return status;
}
+static inline bool has_resources(struct nfs4_client *clp)
+{
+ return !list_empty(&clp->cl_openowners)
+ || !list_empty(&clp->cl_delegations)
+ || !list_empty(&clp->cl_sessions);
+}
+
+__be32
+nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
+{
+ struct nfs4_client *conf, *unconf, *clp;
+ int status = 0;
+
+ nfs4_lock_state();
+ unconf = find_unconfirmed_client(&dc->clientid);
+ conf = find_confirmed_client(&dc->clientid);
+
+ if (conf) {
+ clp = conf;
+
+ if (!is_client_expired(conf) && has_resources(conf)) {
+ status = nfserr_clientid_busy;
+ goto out;
+ }
+
+ /* rfc5661 18.50.3 */
+ if (cstate->session && conf == cstate->session->se_client) {
+ status = nfserr_clientid_busy;
+ goto out;
+ }
+ } else if (unconf)
+ clp = unconf;
+ else {
+ status = nfserr_stale_clientid;
+ goto out;
+ }
+
+ expire_client(clp);
+out:
+ nfs4_unlock_state();
+ dprintk("%s return %d\n", __func__, ntohl(status));
+ return status;
+}
+
__be32
nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc)
{
@@ -1858,19 +2054,13 @@ __be32
nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_setclientid *setclid)
{
- struct xdr_netobj clname = {
- .len = setclid->se_namelen,
- .data = setclid->se_name,
- };
+ struct xdr_netobj clname = setclid->se_name;
nfs4_verifier clverifier = setclid->se_verf;
unsigned int strhashval;
struct nfs4_client *conf, *unconf, *new;
__be32 status;
char dname[HEXDIR_LEN];
- if (!check_name(clname))
- return nfserr_inval;
-
status = nfs4_make_rec_clidname(dname, &clname);
if (status)
return status;
@@ -2074,31 +2264,28 @@ out:
return status;
}
+static struct nfs4_file *nfsd4_alloc_file(void)
+{
+ return kmem_cache_alloc(file_slab, GFP_KERNEL);
+}
+
/* OPEN Share state helper functions */
-static inline struct nfs4_file *
-alloc_init_file(struct inode *ino)
+static void nfsd4_init_file(struct nfs4_file *fp, struct inode *ino)
{
- struct nfs4_file *fp;
unsigned int hashval = file_hashval(ino);
- fp = kmem_cache_alloc(file_slab, GFP_KERNEL);
- if (fp) {
- atomic_set(&fp->fi_ref, 1);
- INIT_LIST_HEAD(&fp->fi_hash);
- INIT_LIST_HEAD(&fp->fi_stateids);
- INIT_LIST_HEAD(&fp->fi_delegations);
- fp->fi_inode = igrab(ino);
- fp->fi_id = current_fileid++;
- fp->fi_had_conflict = false;
- fp->fi_lease = NULL;
- memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
- memset(fp->fi_access, 0, sizeof(fp->fi_access));
- spin_lock(&recall_lock);
- list_add(&fp->fi_hash, &file_hashtbl[hashval]);
- spin_unlock(&recall_lock);
- return fp;
- }
- return NULL;
+ atomic_set(&fp->fi_ref, 1);
+ INIT_LIST_HEAD(&fp->fi_hash);
+ INIT_LIST_HEAD(&fp->fi_stateids);
+ INIT_LIST_HEAD(&fp->fi_delegations);
+ fp->fi_inode = igrab(ino);
+ fp->fi_had_conflict = false;
+ fp->fi_lease = NULL;
+ memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
+ memset(fp->fi_access, 0, sizeof(fp->fi_access));
+ spin_lock(&recall_lock);
+ list_add(&fp->fi_hash, &file_hashtbl[hashval]);
+ spin_unlock(&recall_lock);
}
static void
@@ -2113,7 +2300,8 @@ nfsd4_free_slab(struct kmem_cache **slab)
void
nfsd4_free_slabs(void)
{
- nfsd4_free_slab(&stateowner_slab);
+ nfsd4_free_slab(&openowner_slab);
+ nfsd4_free_slab(&lockowner_slab);
nfsd4_free_slab(&file_slab);
nfsd4_free_slab(&stateid_slab);
nfsd4_free_slab(&deleg_slab);
@@ -2122,16 +2310,20 @@ nfsd4_free_slabs(void)
static int
nfsd4_init_slabs(void)
{
- stateowner_slab = kmem_cache_create("nfsd4_stateowners",
- sizeof(struct nfs4_stateowner), 0, 0, NULL);
- if (stateowner_slab == NULL)
+ openowner_slab = kmem_cache_create("nfsd4_openowners",
+ sizeof(struct nfs4_openowner), 0, 0, NULL);
+ if (openowner_slab == NULL)
+ goto out_nomem;
+ lockowner_slab = kmem_cache_create("nfsd4_lockowners",
+ sizeof(struct nfs4_lockowner), 0, 0, NULL);
+ if (lockowner_slab == NULL)
goto out_nomem;
file_slab = kmem_cache_create("nfsd4_files",
sizeof(struct nfs4_file), 0, 0, NULL);
if (file_slab == NULL)
goto out_nomem;
stateid_slab = kmem_cache_create("nfsd4_stateids",
- sizeof(struct nfs4_stateid), 0, 0, NULL);
+ sizeof(struct nfs4_ol_stateid), 0, 0, NULL);
if (stateid_slab == NULL)
goto out_nomem;
deleg_slab = kmem_cache_create("nfsd4_delegations",
@@ -2145,97 +2337,94 @@ out_nomem:
return -ENOMEM;
}
-void
-nfs4_free_stateowner(struct kref *kref)
+void nfs4_free_openowner(struct nfs4_openowner *oo)
{
- struct nfs4_stateowner *sop =
- container_of(kref, struct nfs4_stateowner, so_ref);
- kfree(sop->so_owner.data);
- kmem_cache_free(stateowner_slab, sop);
+ kfree(oo->oo_owner.so_owner.data);
+ kmem_cache_free(openowner_slab, oo);
}
-static inline struct nfs4_stateowner *
-alloc_stateowner(struct xdr_netobj *owner)
+void nfs4_free_lockowner(struct nfs4_lockowner *lo)
{
- struct nfs4_stateowner *sop;
+ kfree(lo->lo_owner.so_owner.data);
+ kmem_cache_free(lockowner_slab, lo);
+}
- if ((sop = kmem_cache_alloc(stateowner_slab, GFP_KERNEL))) {
- if ((sop->so_owner.data = kmalloc(owner->len, GFP_KERNEL))) {
- memcpy(sop->so_owner.data, owner->data, owner->len);
- sop->so_owner.len = owner->len;
- kref_init(&sop->so_ref);
- return sop;
- }
- kmem_cache_free(stateowner_slab, sop);
- }
- return NULL;
+static void init_nfs4_replay(struct nfs4_replay *rp)
+{
+ rp->rp_status = nfserr_serverfault;
+ rp->rp_buflen = 0;
+ rp->rp_buf = rp->rp_ibuf;
}
-static struct nfs4_stateowner *
-alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
+static inline void *alloc_stateowner(struct kmem_cache *slab, struct xdr_netobj *owner, struct nfs4_client *clp)
+{
struct nfs4_stateowner *sop;
- struct nfs4_replay *rp;
- unsigned int idhashval;
- if (!(sop = alloc_stateowner(&open->op_owner)))
+ sop = kmem_cache_alloc(slab, GFP_KERNEL);
+ if (!sop)
+ return NULL;
+
+ sop->so_owner.data = kmemdup(owner->data, owner->len, GFP_KERNEL);
+ if (!sop->so_owner.data) {
+ kmem_cache_free(slab, sop);
return NULL;
- idhashval = ownerid_hashval(current_ownerid);
- INIT_LIST_HEAD(&sop->so_idhash);
- INIT_LIST_HEAD(&sop->so_strhash);
- INIT_LIST_HEAD(&sop->so_perclient);
+ }
+ sop->so_owner.len = owner->len;
+
INIT_LIST_HEAD(&sop->so_stateids);
- INIT_LIST_HEAD(&sop->so_perstateid); /* not used */
- INIT_LIST_HEAD(&sop->so_close_lru);
- sop->so_time = 0;
- list_add(&sop->so_idhash, &ownerid_hashtbl[idhashval]);
- list_add(&sop->so_strhash, &ownerstr_hashtbl[strhashval]);
- list_add(&sop->so_perclient, &clp->cl_openowners);
- sop->so_is_open_owner = 1;
- sop->so_id = current_ownerid++;
sop->so_client = clp;
- sop->so_seqid = open->op_seqid;
- sop->so_confirmed = 0;
- rp = &sop->so_replay;
- rp->rp_status = nfserr_serverfault;
- rp->rp_buflen = 0;
- rp->rp_buf = rp->rp_ibuf;
+ init_nfs4_replay(&sop->so_replay);
return sop;
}
-static inline void
-init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
- struct nfs4_stateowner *sop = open->op_stateowner;
- unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
+static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, unsigned int strhashval)
+{
+ list_add(&oo->oo_owner.so_strhash, &open_ownerstr_hashtbl[strhashval]);
+ list_add(&oo->oo_perclient, &clp->cl_openowners);
+}
- INIT_LIST_HEAD(&stp->st_hash);
- INIT_LIST_HEAD(&stp->st_perstateowner);
+static struct nfs4_openowner *
+alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) {
+ struct nfs4_openowner *oo;
+
+ oo = alloc_stateowner(openowner_slab, &open->op_owner, clp);
+ if (!oo)
+ return NULL;
+ oo->oo_owner.so_is_open_owner = 1;
+ oo->oo_owner.so_seqid = open->op_seqid;
+ oo->oo_flags = NFS4_OO_NEW;
+ oo->oo_time = 0;
+ oo->oo_last_closed_stid = NULL;
+ INIT_LIST_HEAD(&oo->oo_close_lru);
+ hash_openowner(oo, clp, strhashval);
+ return oo;
+}
+
+static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
+ struct nfs4_openowner *oo = open->op_openowner;
+ struct nfs4_client *clp = oo->oo_owner.so_client;
+
+ init_stid(&stp->st_stid, clp, NFS4_OPEN_STID);
INIT_LIST_HEAD(&stp->st_lockowners);
- INIT_LIST_HEAD(&stp->st_perfile);
- list_add(&stp->st_hash, &stateid_hashtbl[hashval]);
- list_add(&stp->st_perstateowner, &sop->so_stateids);
+ list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids);
list_add(&stp->st_perfile, &fp->fi_stateids);
- stp->st_stateowner = sop;
+ stp->st_stateowner = &oo->oo_owner;
get_nfs4_file(fp);
stp->st_file = fp;
- stp->st_stateid.si_boot = boot_time;
- stp->st_stateid.si_stateownerid = sop->so_id;
- stp->st_stateid.si_fileid = fp->fi_id;
- stp->st_stateid.si_generation = 0;
stp->st_access_bmap = 0;
stp->st_deny_bmap = 0;
- __set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
- &stp->st_access_bmap);
+ __set_bit(open->op_share_access, &stp->st_access_bmap);
__set_bit(open->op_share_deny, &stp->st_deny_bmap);
stp->st_openstp = NULL;
}
static void
-move_to_close_lru(struct nfs4_stateowner *sop)
+move_to_close_lru(struct nfs4_openowner *oo)
{
- dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop);
+ dprintk("NFSD: move_to_close_lru nfs4_openowner %p\n", oo);
- list_move_tail(&sop->so_close_lru, &close_lru);
- sop->so_time = get_seconds();
+ list_move_tail(&oo->oo_close_lru, &close_lru);
+ oo->oo_time = get_seconds();
}
static int
@@ -2247,14 +2436,18 @@ same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner,
(sop->so_client->cl_clientid.cl_id == clid->cl_id);
}
-static struct nfs4_stateowner *
+static struct nfs4_openowner *
find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
{
- struct nfs4_stateowner *so = NULL;
+ struct nfs4_stateowner *so;
+ struct nfs4_openowner *oo;
- list_for_each_entry(so, &ownerstr_hashtbl[hashval], so_strhash) {
- if (same_owner_str(so, &open->op_owner, &open->op_clientid))
- return so;
+ list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
+ if (same_owner_str(so, &open->op_owner, &open->op_clientid)) {
+ oo = openowner(so);
+ renew_client(oo->oo_owner.so_client);
+ return oo;
+ }
}
return NULL;
}
@@ -2278,31 +2471,6 @@ find_file(struct inode *ino)
return NULL;
}
-static inline int access_valid(u32 x, u32 minorversion)
-{
- if ((x & NFS4_SHARE_ACCESS_MASK) < NFS4_SHARE_ACCESS_READ)
- return 0;
- if ((x & NFS4_SHARE_ACCESS_MASK) > NFS4_SHARE_ACCESS_BOTH)
- return 0;
- x &= ~NFS4_SHARE_ACCESS_MASK;
- if (minorversion && x) {
- if ((x & NFS4_SHARE_WANT_MASK) > NFS4_SHARE_WANT_CANCEL)
- return 0;
- if ((x & NFS4_SHARE_WHEN_MASK) > NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED)
- return 0;
- x &= ~(NFS4_SHARE_WANT_MASK | NFS4_SHARE_WHEN_MASK);
- }
- if (x)
- return 0;
- return 1;
-}
-
-static inline int deny_valid(u32 x)
-{
- /* Note: unlike access bits, deny bits may be zero. */
- return x <= NFS4_SHARE_DENY_BOTH;
-}
-
/*
* Called to check deny when READ with all zero stateid or
* WRITE with all zero or all one stateid
@@ -2312,7 +2480,7 @@ nfs4_share_conflict(struct svc_fh *current_fh, unsigned int deny_type)
{
struct inode *ino = current_fh->fh_dentry->d_inode;
struct nfs4_file *fp;
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
__be32 ret;
dprintk("NFSD: nfs4_share_conflict\n");
@@ -2383,10 +2551,20 @@ int nfsd_change_deleg_cb(struct file_lock **onlist, int arg)
}
static const struct lock_manager_operations nfsd_lease_mng_ops = {
- .fl_break = nfsd_break_deleg_cb,
- .fl_change = nfsd_change_deleg_cb,
+ .lm_break = nfsd_break_deleg_cb,
+ .lm_change = nfsd_change_deleg_cb,
};
+static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4_stateowner *so, u32 seqid)
+{
+ if (nfsd4_has_session(cstate))
+ return nfs_ok;
+ if (seqid == so->so_seqid - 1)
+ return nfserr_replay_me;
+ if (seqid == so->so_seqid)
+ return nfs_ok;
+ return nfserr_bad_seqid;
+}
__be32
nfsd4_process_open1(struct nfsd4_compound_state *cstate,
@@ -2395,57 +2573,49 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
clientid_t *clientid = &open->op_clientid;
struct nfs4_client *clp = NULL;
unsigned int strhashval;
- struct nfs4_stateowner *sop = NULL;
-
- if (!check_name(open->op_owner))
- return nfserr_inval;
+ struct nfs4_openowner *oo = NULL;
+ __be32 status;
if (STALE_CLIENTID(&open->op_clientid))
return nfserr_stale_clientid;
+ /*
+ * In case we need it later, after we've already created the
+ * file and don't want to risk a further failure:
+ */
+ open->op_file = nfsd4_alloc_file();
+ if (open->op_file == NULL)
+ return nfserr_jukebox;
- strhashval = ownerstr_hashval(clientid->cl_id, open->op_owner);
- sop = find_openstateowner_str(strhashval, open);
- open->op_stateowner = sop;
- if (!sop) {
- /* Make sure the client's lease hasn't expired. */
+ strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner);
+ oo = find_openstateowner_str(strhashval, open);
+ open->op_openowner = oo;
+ if (!oo) {
clp = find_confirmed_client(clientid);
if (clp == NULL)
return nfserr_expired;
- goto renew;
+ goto new_owner;
}
- /* When sessions are used, skip open sequenceid processing */
- if (nfsd4_has_session(cstate))
- goto renew;
- if (!sop->so_confirmed) {
+ if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) {
/* Replace unconfirmed owners without checking for replay. */
- clp = sop->so_client;
- release_openowner(sop);
- open->op_stateowner = NULL;
- goto renew;
- }
- if (open->op_seqid == sop->so_seqid - 1) {
- if (sop->so_replay.rp_buflen)
- return nfserr_replay_me;
- /* The original OPEN failed so spectacularly
- * that we don't even have replay data saved!
- * Therefore, we have no choice but to continue
- * processing this OPEN; presumably, we'll
- * fail again for the same reason.
- */
- dprintk("nfsd4_process_open1: replay with no replay cache\n");
- goto renew;
- }
- if (open->op_seqid != sop->so_seqid)
- return nfserr_bad_seqid;
-renew:
- if (open->op_stateowner == NULL) {
- sop = alloc_init_open_stateowner(strhashval, clp, open);
- if (sop == NULL)
- return nfserr_jukebox;
- open->op_stateowner = sop;
+ clp = oo->oo_owner.so_client;
+ release_openowner(oo);
+ open->op_openowner = NULL;
+ goto new_owner;
}
- list_del_init(&sop->so_close_lru);
- renew_client(sop->so_client);
+ status = nfsd4_check_seqid(cstate, &oo->oo_owner, open->op_seqid);
+ if (status)
+ return status;
+ clp = oo->oo_owner.so_client;
+ goto alloc_stateid;
+new_owner:
+ oo = alloc_init_open_stateowner(strhashval, clp, open);
+ if (oo == NULL)
+ return nfserr_jukebox;
+ open->op_openowner = oo;
+alloc_stateid:
+ open->op_stp = nfs4_alloc_stateid(clp);
+ if (!open->op_stp)
+ return nfserr_jukebox;
return nfs_ok;
}
@@ -2458,36 +2628,37 @@ nfs4_check_delegmode(struct nfs4_delegation *dp, int flags)
return nfs_ok;
}
-static struct nfs4_delegation *
-find_delegation_file(struct nfs4_file *fp, stateid_t *stid)
+static int share_access_to_flags(u32 share_access)
{
- struct nfs4_delegation *dp;
+ share_access &= ~NFS4_SHARE_WANT_MASK;
- spin_lock(&recall_lock);
- list_for_each_entry(dp, &fp->fi_delegations, dl_perfile)
- if (dp->dl_stateid.si_stateownerid == stid->si_stateownerid) {
- spin_unlock(&recall_lock);
- return dp;
- }
- spin_unlock(&recall_lock);
- return NULL;
+ return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
}
-static int share_access_to_flags(u32 share_access)
+static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl, stateid_t *s)
{
- share_access &= ~NFS4_SHARE_WANT_MASK;
+ struct nfs4_stid *ret;
- return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
+ ret = find_stateid_by_type(cl, s, NFS4_DELEG_STID);
+ if (!ret)
+ return NULL;
+ return delegstateid(ret);
+}
+
+static bool nfsd4_is_deleg_cur(struct nfsd4_open *open)
+{
+ return open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR ||
+ open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH;
}
static __be32
-nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
+nfs4_check_deleg(struct nfs4_client *cl, struct nfs4_file *fp, struct nfsd4_open *open,
struct nfs4_delegation **dp)
{
int flags;
__be32 status = nfserr_bad_stateid;
- *dp = find_delegation_file(fp, &open->op_delegate_stateid);
+ *dp = find_deleg_stateid(cl, &open->op_delegate_stateid);
if (*dp == NULL)
goto out;
flags = share_access_to_flags(open->op_share_access);
@@ -2495,41 +2666,37 @@ nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
if (status)
*dp = NULL;
out:
- if (open->op_claim_type != NFS4_OPEN_CLAIM_DELEGATE_CUR)
+ if (!nfsd4_is_deleg_cur(open))
return nfs_ok;
if (status)
return status;
- open->op_stateowner->so_confirmed = 1;
+ open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
return nfs_ok;
}
static __be32
-nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_stateid **stpp)
+nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_ol_stateid **stpp)
{
- struct nfs4_stateid *local;
- __be32 status = nfserr_share_denied;
- struct nfs4_stateowner *sop = open->op_stateowner;
+ struct nfs4_ol_stateid *local;
+ struct nfs4_openowner *oo = open->op_openowner;
list_for_each_entry(local, &fp->fi_stateids, st_perfile) {
/* ignore lock owners */
if (local->st_stateowner->so_is_open_owner == 0)
continue;
/* remember if we have seen this open owner */
- if (local->st_stateowner == sop)
+ if (local->st_stateowner == &oo->oo_owner)
*stpp = local;
/* check for conflicting share reservations */
if (!test_share(local, open))
- goto out;
+ return nfserr_share_denied;
}
- status = 0;
-out:
- return status;
+ return nfs_ok;
}
-static inline struct nfs4_stateid *
-nfs4_alloc_stateid(void)
+static void nfs4_free_stateid(struct nfs4_ol_stateid *s)
{
- return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
+ kmem_cache_free(stateid_slab, s);
}
static inline int nfs4_access_to_access(u32 nfs4_access)
@@ -2550,12 +2717,6 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
int oflag = nfs4_access_to_omode(open->op_share_access);
int access = nfs4_access_to_access(open->op_share_access);
- /* CLAIM_DELEGATE_CUR is used in response to a broken lease;
- * allowing it to break the lease and return EAGAIN leaves the
- * client unable to make progress in returning the delegation */
- if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
- access |= NFSD_MAY_NOT_BREAK_LEASE;
-
if (!fp->fi_fds[oflag]) {
status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
&fp->fi_fds[oflag]);
@@ -2567,27 +2728,6 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
return nfs_ok;
}
-static __be32
-nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
- struct nfs4_file *fp, struct svc_fh *cur_fh,
- struct nfsd4_open *open)
-{
- struct nfs4_stateid *stp;
- __be32 status;
-
- stp = nfs4_alloc_stateid();
- if (stp == NULL)
- return nfserr_jukebox;
-
- status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
- if (status) {
- kmem_cache_free(stateid_slab, stp);
- return status;
- }
- *stpp = stp;
- return 0;
-}
-
static inline __be32
nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
struct nfsd4_open *open)
@@ -2604,9 +2744,9 @@ nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
}
static __be32
-nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_stateid *stp, struct nfsd4_open *open)
+nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open)
{
- u32 op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;
+ u32 op_share_access = open->op_share_access;
bool new_access;
__be32 status;
@@ -2635,8 +2775,8 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *c
static void
nfs4_set_claim_prev(struct nfsd4_open *open)
{
- open->op_stateowner->so_confirmed = 1;
- open->op_stateowner->so_client->cl_firststate = 1;
+ open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
+ open->op_openowner->oo_owner.so_client->cl_firststate = 1;
}
/* Should we give out recallable state?: */
@@ -2679,10 +2819,8 @@ static int nfs4_setlease(struct nfs4_delegation *dp, int flag)
if (!fl)
return -ENOMEM;
fl->fl_file = find_readable_file(fp);
- list_add(&dp->dl_perclnt, &dp->dl_client->cl_delegations);
status = vfs_setlease(fl->fl_file, fl->fl_type, &fl);
if (status) {
- list_del_init(&dp->dl_perclnt);
locks_free_lock(fl);
return -ENOMEM;
}
@@ -2690,7 +2828,9 @@ static int nfs4_setlease(struct nfs4_delegation *dp, int flag)
fp->fi_deleg_file = fl->fl_file;
get_file(fp->fi_deleg_file);
atomic_set(&fp->fi_delegees, 1);
- list_add(&dp->dl_perfile, &fp->fi_delegations);
+ spin_lock(&recall_lock);
+ hash_delegation_locked(dp, fp);
+ spin_unlock(&recall_lock);
return 0;
}
@@ -2706,9 +2846,8 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
return -EAGAIN;
}
atomic_inc(&fp->fi_delegees);
- list_add(&dp->dl_perfile, &fp->fi_delegations);
+ hash_delegation_locked(dp, fp);
spin_unlock(&recall_lock);
- list_add(&dp->dl_perclnt, &dp->dl_client->cl_delegations);
return 0;
}
@@ -2716,14 +2855,14 @@ static int nfs4_set_delegation(struct nfs4_delegation *dp, int flag)
* Attempt to hand out a delegation.
*/
static void
-nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_stateid *stp)
+nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_ol_stateid *stp)
{
struct nfs4_delegation *dp;
- struct nfs4_stateowner *sop = stp->st_stateowner;
+ struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner);
int cb_up;
int status, flag = 0;
- cb_up = nfsd4_cb_channel_good(sop->so_client);
+ cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client);
flag = NFS4_OPEN_DELEGATE_NONE;
open->op_recall = 0;
switch (open->op_claim_type) {
@@ -2739,7 +2878,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
* had the chance to reclaim theirs.... */
if (locks_in_grace())
goto out;
- if (!cb_up || !sop->so_confirmed)
+ if (!cb_up || !(oo->oo_flags & NFS4_OO_CONFIRMED))
goto out;
if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
flag = NFS4_OPEN_DELEGATE_WRITE;
@@ -2750,17 +2889,17 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
goto out;
}
- dp = alloc_init_deleg(sop->so_client, stp, fh, flag);
+ dp = alloc_init_deleg(oo->oo_owner.so_client, stp, fh, flag);
if (dp == NULL)
goto out_no_deleg;
status = nfs4_set_delegation(dp, flag);
if (status)
goto out_free;
- memcpy(&open->op_delegate_stateid, &dp->dl_stateid, sizeof(dp->dl_stateid));
+ memcpy(&open->op_delegate_stateid, &dp->dl_stid.sc_stateid, sizeof(dp->dl_stid.sc_stateid));
dprintk("NFSD: delegation stateid=" STATEID_FMT "\n",
- STATEID_VAL(&dp->dl_stateid));
+ STATEID_VAL(&dp->dl_stid.sc_stateid));
out:
if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS
&& flag == NFS4_OPEN_DELEGATE_NONE
@@ -2782,16 +2921,13 @@ __be32
nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
{
struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ struct nfs4_client *cl = open->op_openowner->oo_owner.so_client;
struct nfs4_file *fp = NULL;
struct inode *ino = current_fh->fh_dentry->d_inode;
- struct nfs4_stateid *stp = NULL;
+ struct nfs4_ol_stateid *stp = NULL;
struct nfs4_delegation *dp = NULL;
__be32 status;
- status = nfserr_inval;
- if (!access_valid(open->op_share_access, resp->cstate.minorversion)
- || !deny_valid(open->op_share_deny))
- goto out;
/*
* Lookup file; if found, lookup stateid and check open request,
* and check for delegations in the process of being recalled.
@@ -2801,17 +2937,17 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
if (fp) {
if ((status = nfs4_check_open(fp, open, &stp)))
goto out;
- status = nfs4_check_deleg(fp, open, &dp);
+ status = nfs4_check_deleg(cl, fp, open, &dp);
if (status)
goto out;
} else {
status = nfserr_bad_stateid;
- if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
+ if (nfsd4_is_deleg_cur(open))
goto out;
status = nfserr_jukebox;
- fp = alloc_init_file(ino);
- if (fp == NULL)
- goto out;
+ fp = open->op_file;
+ open->op_file = NULL;
+ nfsd4_init_file(fp, ino);
}
/*
@@ -2823,24 +2959,24 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
status = nfs4_upgrade_open(rqstp, fp, current_fh, stp, open);
if (status)
goto out;
- update_stateid(&stp->st_stateid);
} else {
- status = nfs4_new_open(rqstp, &stp, fp, current_fh, open);
+ status = nfs4_get_vfs_file(rqstp, fp, current_fh, open);
if (status)
goto out;
- init_stateid(stp, fp, open);
+ stp = open->op_stp;
+ open->op_stp = NULL;
+ init_open_stateid(stp, fp, open);
status = nfsd4_truncate(rqstp, current_fh, open);
if (status) {
release_open_stateid(stp);
goto out;
}
- if (nfsd4_has_session(&resp->cstate))
- update_stateid(&stp->st_stateid);
}
- memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
if (nfsd4_has_session(&resp->cstate))
- open->op_stateowner->so_confirmed = 1;
+ open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
/*
* Attempt to hand out a delegation. No error return, because the
@@ -2851,7 +2987,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
status = nfs_ok;
dprintk("%s: stateid=" STATEID_FMT "\n", __func__,
- STATEID_VAL(&stp->st_stateid));
+ STATEID_VAL(&stp->st_stid.sc_stateid));
out:
if (fp)
put_nfs4_file(fp);
@@ -2861,13 +2997,34 @@ out:
* To finish the open response, we just need to set the rflags.
*/
open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
- if (!open->op_stateowner->so_confirmed &&
+ if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED) &&
!nfsd4_has_session(&resp->cstate))
open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
return status;
}
+void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status)
+{
+ if (open->op_openowner) {
+ struct nfs4_openowner *oo = open->op_openowner;
+
+ if (!list_empty(&oo->oo_owner.so_stateids))
+ list_del_init(&oo->oo_close_lru);
+ if (oo->oo_flags & NFS4_OO_NEW) {
+ if (status) {
+ release_openowner(oo);
+ open->op_openowner = NULL;
+ } else
+ oo->oo_flags &= ~NFS4_OO_NEW;
+ }
+ }
+ if (open->op_file)
+ nfsd4_free_file(open->op_file);
+ if (open->op_stp)
+ nfs4_free_stateid(open->op_stp);
+}
+
__be32
nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
clientid_t *clid)
@@ -2888,7 +3045,6 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
dprintk("nfsd4_renew: clientid not found!\n");
goto out;
}
- renew_client(clp);
status = nfserr_cb_path_down;
if (!list_empty(&clp->cl_delegations)
&& clp->cl_cb_state != NFSD4_CB_UP)
@@ -2920,7 +3076,7 @@ static time_t
nfs4_laundromat(void)
{
struct nfs4_client *clp;
- struct nfs4_stateowner *sop;
+ struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
struct list_head *pos, *next, reaplist;
time_t cutoff = get_seconds() - nfsd4_lease;
@@ -2977,16 +3133,14 @@ nfs4_laundromat(void)
}
test_val = nfsd4_lease;
list_for_each_safe(pos, next, &close_lru) {
- sop = list_entry(pos, struct nfs4_stateowner, so_close_lru);
- if (time_after((unsigned long)sop->so_time, (unsigned long)cutoff)) {
- u = sop->so_time - cutoff;
+ oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
+ if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
+ u = oo->oo_time - cutoff;
if (test_val > u)
test_val = u;
break;
}
- dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
- sop->so_id);
- release_openowner(sop);
+ release_openowner(oo);
}
if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
@@ -3008,30 +3162,17 @@ laundromat_main(struct work_struct *not_used)
queue_delayed_work(laundry_wq, &laundromat_work, t*HZ);
}
-static struct nfs4_stateowner *
-search_close_lru(u32 st_id, int flags)
-{
- struct nfs4_stateowner *local = NULL;
-
- if (flags & CLOSE_STATE) {
- list_for_each_entry(local, &close_lru, so_close_lru) {
- if (local->so_id == st_id)
- return local;
- }
- }
- return NULL;
-}
-
-static inline int
-nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stateid *stp)
+static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
{
- return fhp->fh_dentry->d_inode != stp->st_file->fi_inode;
+ if (fhp->fh_dentry->d_inode != stp->st_file->fi_inode)
+ return nfserr_bad_stateid;
+ return nfs_ok;
}
static int
STALE_STATEID(stateid_t *stateid)
{
- if (stateid->si_boot == boot_time)
+ if (stateid->si_opaque.so_clid.cl_boot == boot_time)
return 0;
dprintk("NFSD: stale stateid " STATEID_FMT "!\n",
STATEID_VAL(stateid));
@@ -3054,7 +3195,7 @@ access_permit_write(unsigned long access_bmap)
}
static
-__be32 nfs4_check_openmode(struct nfs4_stateid *stp, int flags)
+__be32 nfs4_check_openmode(struct nfs4_ol_stateid *stp, int flags)
{
__be32 status = nfserr_openmode;
@@ -3097,37 +3238,83 @@ grace_disallows_io(struct inode *inode)
return locks_in_grace() && mandatory_lock(inode);
}
-static int check_stateid_generation(stateid_t *in, stateid_t *ref, int flags)
+/* Returns true iff a is later than b: */
+static bool stateid_generation_after(stateid_t *a, stateid_t *b)
+{
+ return (s32)a->si_generation - (s32)b->si_generation > 0;
+}
+
+static int check_stateid_generation(stateid_t *in, stateid_t *ref, bool has_session)
{
/*
* When sessions are used the stateid generation number is ignored
* when it is zero.
*/
- if ((flags & HAS_SESSION) && in->si_generation == 0)
- goto out;
+ if (has_session && in->si_generation == 0)
+ return nfs_ok;
+
+ if (in->si_generation == ref->si_generation)
+ return nfs_ok;
/* If the client sends us a stateid from the future, it's buggy: */
- if (in->si_generation > ref->si_generation)
+ if (stateid_generation_after(in, ref))
return nfserr_bad_stateid;
/*
- * The following, however, can happen. For example, if the
- * client sends an open and some IO at the same time, the open
- * may bump si_generation while the IO is still in flight.
- * Thanks to hard links and renames, the client never knows what
- * file an open will affect. So it could avoid that situation
- * only by serializing all opens and IO from the same open
- * owner. To recover from the old_stateid error, the client
- * will just have to retry the IO:
+ * However, we could see a stateid from the past, even from a
+ * non-buggy client. For example, if the client sends a lock
+ * while some IO is outstanding, the lock may bump si_generation
+ * while the IO is still in flight. The client could avoid that
+ * situation by waiting for responses on all the IO requests,
+ * but better performance may result in retrying IO that
+ * receives an old_stateid error if requests are rarely
+ * reordered in flight:
*/
- if (in->si_generation < ref->si_generation)
- return nfserr_old_stateid;
-out:
+ return nfserr_old_stateid;
+}
+
+static __be32 nfsd4_check_openowner_confirmed(struct nfs4_ol_stateid *ols)
+{
+ if (ols->st_stateowner->so_is_open_owner &&
+ !(openowner(ols->st_stateowner)->oo_flags & NFS4_OO_CONFIRMED))
+ return nfserr_bad_stateid;
return nfs_ok;
}
-static int is_delegation_stateid(stateid_t *stateid)
+__be32 nfs4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
{
- return stateid->si_fileid == 0;
+ struct nfs4_stid *s;
+ __be32 status;
+
+ if (STALE_STATEID(stateid))
+ return nfserr_stale_stateid;
+
+ s = find_stateid(cl, stateid);
+ if (!s)
+ return nfserr_stale_stateid;
+ status = check_stateid_generation(stateid, &s->sc_stateid, 1);
+ if (status)
+ return status;
+ if (!(s->sc_type & (NFS4_OPEN_STID | NFS4_LOCK_STID)))
+ return nfs_ok;
+ return nfsd4_check_openowner_confirmed(openlockstateid(s));
+}
+
+static __be32 nfsd4_lookup_stateid(stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s)
+{
+ struct nfs4_client *cl;
+
+ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+ return nfserr_bad_stateid;
+ if (STALE_STATEID(stateid))
+ return nfserr_stale_stateid;
+ cl = find_confirmed_client(&stateid->si_opaque.so_clid);
+ if (!cl)
+ return nfserr_expired;
+ *s = find_stateid_by_type(cl, stateid, typemask);
+ if (!*s)
+ return nfserr_bad_stateid;
+ return nfs_ok;
+
}
/*
@@ -3137,7 +3324,8 @@ __be32
nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
stateid_t *stateid, int flags, struct file **filpp)
{
- struct nfs4_stateid *stp = NULL;
+ struct nfs4_stid *s;
+ struct nfs4_ol_stateid *stp = NULL;
struct nfs4_delegation *dp = NULL;
struct svc_fh *current_fh = &cstate->current_fh;
struct inode *ino = current_fh->fh_dentry->d_inode;
@@ -3149,66 +3337,115 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
if (grace_disallows_io(ino))
return nfserr_grace;
- if (nfsd4_has_session(cstate))
- flags |= HAS_SESSION;
-
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
return check_special_stateids(current_fh, stateid, flags);
- status = nfserr_stale_stateid;
- if (STALE_STATEID(stateid))
+ status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID, &s);
+ if (status)
+ return status;
+ status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));
+ if (status)
goto out;
-
- /*
- * We assume that any stateid that has the current boot time,
- * but that we can't find, is expired:
- */
- status = nfserr_expired;
- if (is_delegation_stateid(stateid)) {
- dp = find_delegation_stateid(ino, stateid);
- if (!dp)
- goto out;
- status = check_stateid_generation(stateid, &dp->dl_stateid,
- flags);
- if (status)
- goto out;
+ switch (s->sc_type) {
+ case NFS4_DELEG_STID:
+ dp = delegstateid(s);
status = nfs4_check_delegmode(dp, flags);
if (status)
goto out;
- renew_client(dp->dl_client);
if (filpp) {
*filpp = dp->dl_file->fi_deleg_file;
BUG_ON(!*filpp);
}
- } else { /* open or lock stateid */
- stp = find_stateid(stateid, flags);
- if (!stp)
- goto out;
- status = nfserr_bad_stateid;
- if (nfs4_check_fh(current_fh, stp))
- goto out;
- if (!stp->st_stateowner->so_confirmed)
+ break;
+ case NFS4_OPEN_STID:
+ case NFS4_LOCK_STID:
+ stp = openlockstateid(s);
+ status = nfs4_check_fh(current_fh, stp);
+ if (status)
goto out;
- status = check_stateid_generation(stateid, &stp->st_stateid,
- flags);
+ status = nfsd4_check_openowner_confirmed(stp);
if (status)
goto out;
status = nfs4_check_openmode(stp, flags);
if (status)
goto out;
- renew_client(stp->st_stateowner->so_client);
if (filpp) {
if (flags & RD_STATE)
*filpp = find_readable_file(stp->st_file);
else
*filpp = find_writeable_file(stp->st_file);
}
+ break;
+ default:
+ return nfserr_bad_stateid;
}
status = nfs_ok;
out:
return status;
}
+static __be32
+nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp)
+{
+ struct nfs4_lockowner *lo = lockowner(stp->st_stateowner);
+
+ if (check_for_locks(stp->st_file, lo))
+ return nfserr_locks_held;
+ /*
+ * Currently there's a 1-1 lock stateid<->lockowner
+ * correspondance, and we have to delete the lockowner when we
+ * delete the lock stateid:
+ */
+ release_lockowner(lo);
+ return nfs_ok;
+}
+
+/*
+ * Test if the stateid is valid
+ */
+__be32
+nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_test_stateid *test_stateid)
+{
+ /* real work is done during encoding */
+ return nfs_ok;
+}
+
+__be32
+nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_free_stateid *free_stateid)
+{
+ stateid_t *stateid = &free_stateid->fr_stateid;
+ struct nfs4_stid *s;
+ struct nfs4_client *cl = cstate->session->se_client;
+ __be32 ret = nfserr_bad_stateid;
+
+ nfs4_lock_state();
+ s = find_stateid(cl, stateid);
+ if (!s)
+ goto out;
+ switch (s->sc_type) {
+ case NFS4_DELEG_STID:
+ ret = nfserr_locks_held;
+ goto out;
+ case NFS4_OPEN_STID:
+ case NFS4_LOCK_STID:
+ ret = check_stateid_generation(stateid, &s->sc_stateid, 1);
+ if (ret)
+ goto out;
+ if (s->sc_type == NFS4_LOCK_STID)
+ ret = nfsd4_free_lock_stateid(openlockstateid(s));
+ else
+ ret = nfserr_locks_held;
+ break;
+ default:
+ ret = nfserr_bad_stateid;
+ }
+out:
+ nfs4_unlock_state();
+ return ret;
+}
+
static inline int
setlkflg (int type)
{
@@ -3216,124 +3453,64 @@ setlkflg (int type)
RD_STATE : WR_STATE;
}
+static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_ol_stateid *stp)
+{
+ struct svc_fh *current_fh = &cstate->current_fh;
+ struct nfs4_stateowner *sop = stp->st_stateowner;
+ __be32 status;
+
+ status = nfsd4_check_seqid(cstate, sop, seqid);
+ if (status)
+ return status;
+ if (stp->st_stid.sc_type == NFS4_CLOSED_STID)
+ /*
+ * "Closed" stateid's exist *only* to return
+ * nfserr_replay_me from the previous step.
+ */
+ return nfserr_bad_stateid;
+ status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate));
+ if (status)
+ return status;
+ return nfs4_check_fh(current_fh, stp);
+}
+
/*
* Checks for sequence id mutating operations.
*/
static __be32
nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
- stateid_t *stateid, int flags,
- struct nfs4_stateowner **sopp,
- struct nfs4_stateid **stpp, struct nfsd4_lock *lock)
+ stateid_t *stateid, char typemask,
+ struct nfs4_ol_stateid **stpp)
{
- struct nfs4_stateid *stp;
- struct nfs4_stateowner *sop;
- struct svc_fh *current_fh = &cstate->current_fh;
__be32 status;
+ struct nfs4_stid *s;
dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__,
seqid, STATEID_VAL(stateid));
*stpp = NULL;
- *sopp = NULL;
-
- if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) {
- dprintk("NFSD: preprocess_seqid_op: magic stateid!\n");
- return nfserr_bad_stateid;
- }
-
- if (STALE_STATEID(stateid))
- return nfserr_stale_stateid;
-
- if (nfsd4_has_session(cstate))
- flags |= HAS_SESSION;
-
- /*
- * We return BAD_STATEID if filehandle doesn't match stateid,
- * the confirmed flag is incorrecly set, or the generation
- * number is incorrect.
- */
- stp = find_stateid(stateid, flags);
- if (stp == NULL) {
- /*
- * Also, we should make sure this isn't just the result of
- * a replayed close:
- */
- sop = search_close_lru(stateid->si_stateownerid, flags);
- /* It's not stale; let's assume it's expired: */
- if (sop == NULL)
- return nfserr_expired;
- *sopp = sop;
- goto check_replay;
- }
-
- *stpp = stp;
- *sopp = sop = stp->st_stateowner;
-
- if (lock) {
- clientid_t *lockclid = &lock->v.new.clientid;
- struct nfs4_client *clp = sop->so_client;
- int lkflg = 0;
- __be32 status;
-
- lkflg = setlkflg(lock->lk_type);
-
- if (lock->lk_is_new) {
- if (!sop->so_is_open_owner)
- return nfserr_bad_stateid;
- if (!(flags & HAS_SESSION) &&
- !same_clid(&clp->cl_clientid, lockclid))
- return nfserr_bad_stateid;
- /* stp is the open stateid */
- status = nfs4_check_openmode(stp, lkflg);
- if (status)
- return status;
- } else {
- /* stp is the lock stateid */
- status = nfs4_check_openmode(stp->st_openstp, lkflg);
- if (status)
- return status;
- }
- }
+ status = nfsd4_lookup_stateid(stateid, typemask, &s);
+ if (status)
+ return status;
+ *stpp = openlockstateid(s);
+ cstate->replay_owner = (*stpp)->st_stateowner;
- if (nfs4_check_fh(current_fh, stp)) {
- dprintk("NFSD: preprocess_seqid_op: fh-stateid mismatch!\n");
- return nfserr_bad_stateid;
- }
+ return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp);
+}
- /*
- * We now validate the seqid and stateid generation numbers.
- * For the moment, we ignore the possibility of
- * generation number wraparound.
- */
- if (!(flags & HAS_SESSION) && seqid != sop->so_seqid)
- goto check_replay;
+static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, stateid_t *stateid, struct nfs4_ol_stateid **stpp)
+{
+ __be32 status;
+ struct nfs4_openowner *oo;
- if (sop->so_confirmed && flags & CONFIRM) {
- dprintk("NFSD: preprocess_seqid_op: expected"
- " unconfirmed stateowner!\n");
- return nfserr_bad_stateid;
- }
- if (!sop->so_confirmed && !(flags & CONFIRM)) {
- dprintk("NFSD: preprocess_seqid_op: stateowner not"
- " confirmed yet!\n");
- return nfserr_bad_stateid;
- }
- status = check_stateid_generation(stateid, &stp->st_stateid, flags);
+ status = nfs4_preprocess_seqid_op(cstate, seqid, stateid,
+ NFS4_OPEN_STID, stpp);
if (status)
return status;
- renew_client(sop->so_client);
+ oo = openowner((*stpp)->st_stateowner);
+ if (!(oo->oo_flags & NFS4_OO_CONFIRMED))
+ return nfserr_bad_stateid;
return nfs_ok;
-
-check_replay:
- if (seqid == sop->so_seqid - 1) {
- dprintk("NFSD: preprocess_seqid_op: retransmission?\n");
- /* indicate replay to calling function */
- return nfserr_replay_me;
- }
- dprintk("NFSD: preprocess_seqid_op: bad seqid (expected %d, got %d)\n",
- sop->so_seqid, seqid);
- *sopp = NULL;
- return nfserr_bad_seqid;
}
__be32
@@ -3341,8 +3518,8 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_open_confirm *oc)
{
__be32 status;
- struct nfs4_stateowner *sop;
- struct nfs4_stateid *stp;
+ struct nfs4_openowner *oo;
+ struct nfs4_ol_stateid *stp;
dprintk("NFSD: nfsd4_open_confirm on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
@@ -3354,39 +3531,52 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(cstate,
+ status = nfs4_preprocess_seqid_op(cstate,
oc->oc_seqid, &oc->oc_req_stateid,
- CONFIRM | OPEN_STATE,
- &oc->oc_stateowner, &stp, NULL)))
- goto out;
-
- sop = oc->oc_stateowner;
- sop->so_confirmed = 1;
- update_stateid(&stp->st_stateid);
- memcpy(&oc->oc_resp_stateid, &stp->st_stateid, sizeof(stateid_t));
+ NFS4_OPEN_STID, &stp);
+ if (status)
+ goto out;
+ oo = openowner(stp->st_stateowner);
+ status = nfserr_bad_stateid;
+ if (oo->oo_flags & NFS4_OO_CONFIRMED)
+ goto out;
+ oo->oo_flags |= NFS4_OO_CONFIRMED;
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&oc->oc_resp_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n",
- __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stateid));
+ __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid));
- nfsd4_create_clid_dir(sop->so_client);
+ nfsd4_create_clid_dir(oo->oo_owner.so_client);
+ status = nfs_ok;
out:
- if (oc->oc_stateowner) {
- nfs4_get_stateowner(oc->oc_stateowner);
- cstate->replay_owner = oc->oc_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
-static inline void nfs4_file_downgrade(struct nfs4_stateid *stp, unsigned int to_access)
+static inline void nfs4_stateid_downgrade_bit(struct nfs4_ol_stateid *stp, u32 access)
{
- int i;
+ if (!test_bit(access, &stp->st_access_bmap))
+ return;
+ nfs4_file_put_access(stp->st_file, nfs4_access_to_omode(access));
+ __clear_bit(access, &stp->st_access_bmap);
+}
- for (i = 1; i < 4; i++) {
- if (test_bit(i, &stp->st_access_bmap)
- && ((i & to_access) != i)) {
- nfs4_file_put_access(stp->st_file, nfs4_access_to_omode(i));
- __clear_bit(i, &stp->st_access_bmap);
- }
+static inline void nfs4_stateid_downgrade(struct nfs4_ol_stateid *stp, u32 to_access)
+{
+ switch (to_access) {
+ case NFS4_SHARE_ACCESS_READ:
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_WRITE);
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH);
+ break;
+ case NFS4_SHARE_ACCESS_WRITE:
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_READ);
+ nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH);
+ break;
+ case NFS4_SHARE_ACCESS_BOTH:
+ break;
+ default:
+ BUG();
}
}
@@ -3406,26 +3596,20 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
struct nfsd4_open_downgrade *od)
{
__be32 status;
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
cstate->current_fh.fh_dentry->d_name.name);
- if (!access_valid(od->od_share_access, cstate->minorversion)
- || !deny_valid(od->od_share_deny))
- return nfserr_inval;
/* We don't yet support WANT bits: */
od->od_share_access &= NFS4_SHARE_ACCESS_MASK;
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(cstate,
- od->od_seqid,
- &od->od_stateid,
- OPEN_STATE,
- &od->od_stateowner, &stp, NULL)))
+ status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,
+ &od->od_stateid, &stp);
+ if (status)
goto out;
-
status = nfserr_inval;
if (!test_bit(od->od_share_access, &stp->st_access_bmap)) {
dprintk("NFSD:access not a subset current bitmap: 0x%lx, input access=%08x\n",
@@ -3437,22 +3621,45 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
stp->st_deny_bmap, od->od_share_deny);
goto out;
}
- nfs4_file_downgrade(stp, od->od_share_access);
+ nfs4_stateid_downgrade(stp, od->od_share_access);
reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
- update_stateid(&stp->st_stateid);
- memcpy(&od->od_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
status = nfs_ok;
out:
- if (od->od_stateowner) {
- nfs4_get_stateowner(od->od_stateowner);
- cstate->replay_owner = od->od_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
+void nfsd4_purge_closed_stateid(struct nfs4_stateowner *so)
+{
+ struct nfs4_openowner *oo;
+ struct nfs4_ol_stateid *s;
+
+ if (!so->so_is_open_owner)
+ return;
+ oo = openowner(so);
+ s = oo->oo_last_closed_stid;
+ if (!s)
+ return;
+ if (!(oo->oo_flags & NFS4_OO_PURGE_CLOSE)) {
+ /* Release the last_closed_stid on the next seqid bump: */
+ oo->oo_flags |= NFS4_OO_PURGE_CLOSE;
+ return;
+ }
+ oo->oo_flags &= ~NFS4_OO_PURGE_CLOSE;
+ release_last_closed_stateid(oo);
+}
+
+static void nfsd4_close_open_stateid(struct nfs4_ol_stateid *s)
+{
+ unhash_open_stateid(s);
+ s->st_stid.sc_type = NFS4_CLOSED_STID;
+}
+
/*
* nfs4_unlock_state() called after encode
*/
@@ -3461,39 +3668,38 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_close *close)
{
__be32 status;
- struct nfs4_stateid *stp;
+ struct nfs4_openowner *oo;
+ struct nfs4_ol_stateid *stp;
dprintk("NFSD: nfsd4_close on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
cstate->current_fh.fh_dentry->d_name.name);
nfs4_lock_state();
- /* check close_lru for replay */
- if ((status = nfs4_preprocess_seqid_op(cstate,
- close->cl_seqid,
- &close->cl_stateid,
- OPEN_STATE | CLOSE_STATE,
- &close->cl_stateowner, &stp, NULL)))
+ status = nfs4_preprocess_seqid_op(cstate, close->cl_seqid,
+ &close->cl_stateid,
+ NFS4_OPEN_STID|NFS4_CLOSED_STID,
+ &stp);
+ if (status)
goto out;
+ oo = openowner(stp->st_stateowner);
status = nfs_ok;
- update_stateid(&stp->st_stateid);
- memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
- /* release_stateid() calls nfsd_close() if needed */
- release_open_stateid(stp);
+ nfsd4_close_open_stateid(stp);
+ release_last_closed_stateid(oo);
+ oo->oo_last_closed_stid = stp;
/* place unused nfs4_stateowners on so_close_lru list to be
* released by the laundromat service after the lease period
* to enable us to handle CLOSE replay
*/
- if (list_empty(&close->cl_stateowner->so_stateids))
- move_to_close_lru(close->cl_stateowner);
+ if (list_empty(&oo->oo_owner.so_stateids))
+ move_to_close_lru(oo);
out:
- if (close->cl_stateowner) {
- nfs4_get_stateowner(close->cl_stateowner);
- cstate->replay_owner = close->cl_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
@@ -3503,34 +3709,22 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
{
struct nfs4_delegation *dp;
stateid_t *stateid = &dr->dr_stateid;
+ struct nfs4_stid *s;
struct inode *inode;
__be32 status;
- int flags = 0;
if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
return status;
inode = cstate->current_fh.fh_dentry->d_inode;
- if (nfsd4_has_session(cstate))
- flags |= HAS_SESSION;
nfs4_lock_state();
- status = nfserr_bad_stateid;
- if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
- goto out;
- status = nfserr_stale_stateid;
- if (STALE_STATEID(stateid))
- goto out;
- status = nfserr_bad_stateid;
- if (!is_delegation_stateid(stateid))
- goto out;
- status = nfserr_expired;
- dp = find_delegation_stateid(inode, stateid);
- if (!dp)
+ status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID, &s);
+ if (status)
goto out;
- status = check_stateid_generation(stateid, &dp->dl_stateid, flags);
+ dp = delegstateid(s);
+ status = check_stateid_generation(stateid, &dp->dl_stid.sc_stateid, nfsd4_has_session(cstate));
if (status)
goto out;
- renew_client(dp->dl_client);
unhash_delegation(dp);
out:
@@ -3568,9 +3762,6 @@ last_byte_offset(u64 start, u64 len)
return end > start ? end - 1: NFS4_MAX_UINT64;
}
-#define lockownerid_hashval(id) \
- ((id) & LOCK_HASH_MASK)
-
static inline unsigned int
lock_ownerstr_hashval(struct inode *inode, u32 cl_id,
struct xdr_netobj *ownername)
@@ -3580,55 +3771,7 @@ lock_ownerstr_hashval(struct inode *inode, u32 cl_id,
& LOCK_HASH_MASK;
}
-static struct list_head lock_ownerid_hashtbl[LOCK_HASH_SIZE];
static struct list_head lock_ownerstr_hashtbl[LOCK_HASH_SIZE];
-static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
-
-static struct nfs4_stateid *
-find_stateid(stateid_t *stid, int flags)
-{
- struct nfs4_stateid *local;
- u32 st_id = stid->si_stateownerid;
- u32 f_id = stid->si_fileid;
- unsigned int hashval;
-
- dprintk("NFSD: find_stateid flags 0x%x\n",flags);
- if (flags & (LOCK_STATE | RD_STATE | WR_STATE)) {
- hashval = stateid_hashval(st_id, f_id);
- list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
- if ((local->st_stateid.si_stateownerid == st_id) &&
- (local->st_stateid.si_fileid == f_id))
- return local;
- }
- }
-
- if (flags & (OPEN_STATE | RD_STATE | WR_STATE)) {
- hashval = stateid_hashval(st_id, f_id);
- list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
- if ((local->st_stateid.si_stateownerid == st_id) &&
- (local->st_stateid.si_fileid == f_id))
- return local;
- }
- }
- return NULL;
-}
-
-static struct nfs4_delegation *
-find_delegation_stateid(struct inode *ino, stateid_t *stid)
-{
- struct nfs4_file *fp;
- struct nfs4_delegation *dl;
-
- dprintk("NFSD: %s: stateid=" STATEID_FMT "\n", __func__,
- STATEID_VAL(stid));
-
- fp = find_file(ino);
- if (!fp)
- return NULL;
- dl = find_delegation_file(fp, stid);
- put_nfs4_file(fp);
- return dl;
-}
/*
* TODO: Linux file offsets are _signed_ 64-bit quantities, which means that
@@ -3655,15 +3798,21 @@ static const struct lock_manager_operations nfsd_posix_mng_ops = {
static inline void
nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
{
- struct nfs4_stateowner *sop;
+ struct nfs4_lockowner *lo;
if (fl->fl_lmops == &nfsd_posix_mng_ops) {
- sop = (struct nfs4_stateowner *) fl->fl_owner;
- kref_get(&sop->so_ref);
- deny->ld_sop = sop;
- deny->ld_clientid = sop->so_client->cl_clientid;
+ lo = (struct nfs4_lockowner *) fl->fl_owner;
+ deny->ld_owner.data = kmemdup(lo->lo_owner.so_owner.data,
+ lo->lo_owner.so_owner.len, GFP_KERNEL);
+ if (!deny->ld_owner.data)
+ /* We just don't care that much */
+ goto nevermind;
+ deny->ld_owner.len = lo->lo_owner.so_owner.len;
+ deny->ld_clientid = lo->lo_owner.so_client->cl_clientid;
} else {
- deny->ld_sop = NULL;
+nevermind:
+ deny->ld_owner.len = 0;
+ deny->ld_owner.data = NULL;
deny->ld_clientid.cl_boot = 0;
deny->ld_clientid.cl_id = 0;
}
@@ -3676,20 +3825,43 @@ nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
deny->ld_type = NFS4_WRITE_LT;
}
-static struct nfs4_stateowner *
-find_lockstateowner_str(struct inode *inode, clientid_t *clid,
+static bool same_lockowner_ino(struct nfs4_lockowner *lo, struct inode *inode, clientid_t *clid, struct xdr_netobj *owner)
+{
+ struct nfs4_ol_stateid *lst;
+
+ if (!same_owner_str(&lo->lo_owner, owner, clid))
+ return false;
+ if (list_empty(&lo->lo_owner.so_stateids)) {
+ WARN_ON_ONCE(1);
+ return false;
+ }
+ lst = list_first_entry(&lo->lo_owner.so_stateids,
+ struct nfs4_ol_stateid, st_perstateowner);
+ return lst->st_file->fi_inode == inode;
+}
+
+static struct nfs4_lockowner *
+find_lockowner_str(struct inode *inode, clientid_t *clid,
struct xdr_netobj *owner)
{
unsigned int hashval = lock_ownerstr_hashval(inode, clid->cl_id, owner);
+ struct nfs4_lockowner *lo;
struct nfs4_stateowner *op;
list_for_each_entry(op, &lock_ownerstr_hashtbl[hashval], so_strhash) {
- if (same_owner_str(op, owner, clid))
- return op;
+ lo = lockowner(op);
+ if (same_lockowner_ino(lo, inode, clid, owner))
+ return lo;
}
return NULL;
}
+static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp)
+{
+ list_add(&lo->lo_owner.so_strhash, &lock_ownerstr_hashtbl[strhashval]);
+ list_add(&lo->lo_perstateid, &open_stp->st_lockowners);
+}
+
/*
* Alloc a lock owner structure.
* Called in nfsd4_lock - therefore, OPEN and OPEN_CONFIRM (if needed) has
@@ -3698,67 +3870,40 @@ find_lockstateowner_str(struct inode *inode, clientid_t *clid,
* strhashval = lock_ownerstr_hashval
*/
-static struct nfs4_stateowner *
-alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_stateid *open_stp, struct nfsd4_lock *lock) {
- struct nfs4_stateowner *sop;
- struct nfs4_replay *rp;
- unsigned int idhashval;
+static struct nfs4_lockowner *
+alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp, struct nfsd4_lock *lock) {
+ struct nfs4_lockowner *lo;
- if (!(sop = alloc_stateowner(&lock->lk_new_owner)))
+ lo = alloc_stateowner(lockowner_slab, &lock->lk_new_owner, clp);
+ if (!lo)
return NULL;
- idhashval = lockownerid_hashval(current_ownerid);
- INIT_LIST_HEAD(&sop->so_idhash);
- INIT_LIST_HEAD(&sop->so_strhash);
- INIT_LIST_HEAD(&sop->so_perclient);
- INIT_LIST_HEAD(&sop->so_stateids);
- INIT_LIST_HEAD(&sop->so_perstateid);
- INIT_LIST_HEAD(&sop->so_close_lru); /* not used */
- sop->so_time = 0;
- list_add(&sop->so_idhash, &lock_ownerid_hashtbl[idhashval]);
- list_add(&sop->so_strhash, &lock_ownerstr_hashtbl[strhashval]);
- list_add(&sop->so_perstateid, &open_stp->st_lockowners);
- sop->so_is_open_owner = 0;
- sop->so_id = current_ownerid++;
- sop->so_client = clp;
+ INIT_LIST_HEAD(&lo->lo_owner.so_stateids);
+ lo->lo_owner.so_is_open_owner = 0;
/* It is the openowner seqid that will be incremented in encode in the
* case of new lockowners; so increment the lock seqid manually: */
- sop->so_seqid = lock->lk_new_lock_seqid + 1;
- sop->so_confirmed = 1;
- rp = &sop->so_replay;
- rp->rp_status = nfserr_serverfault;
- rp->rp_buflen = 0;
- rp->rp_buf = rp->rp_ibuf;
- return sop;
+ lo->lo_owner.so_seqid = lock->lk_new_lock_seqid + 1;
+ hash_lockowner(lo, strhashval, clp, open_stp);
+ return lo;
}
-static struct nfs4_stateid *
-alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struct nfs4_stateid *open_stp)
+static struct nfs4_ol_stateid *
+alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_ol_stateid *open_stp)
{
- struct nfs4_stateid *stp;
- unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
+ struct nfs4_ol_stateid *stp;
+ struct nfs4_client *clp = lo->lo_owner.so_client;
- stp = nfs4_alloc_stateid();
+ stp = nfs4_alloc_stateid(clp);
if (stp == NULL)
- goto out;
- INIT_LIST_HEAD(&stp->st_hash);
- INIT_LIST_HEAD(&stp->st_perfile);
- INIT_LIST_HEAD(&stp->st_perstateowner);
- INIT_LIST_HEAD(&stp->st_lockowners); /* not used */
- list_add(&stp->st_hash, &lockstateid_hashtbl[hashval]);
+ return NULL;
+ init_stid(&stp->st_stid, clp, NFS4_LOCK_STID);
list_add(&stp->st_perfile, &fp->fi_stateids);
- list_add(&stp->st_perstateowner, &sop->so_stateids);
- stp->st_stateowner = sop;
+ list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids);
+ stp->st_stateowner = &lo->lo_owner;
get_nfs4_file(fp);
stp->st_file = fp;
- stp->st_stateid.si_boot = boot_time;
- stp->st_stateid.si_stateownerid = sop->so_id;
- stp->st_stateid.si_fileid = fp->fi_id;
- stp->st_stateid.si_generation = 0;
stp->st_access_bmap = 0;
stp->st_deny_bmap = open_stp->st_deny_bmap;
stp->st_openstp = open_stp;
-
-out:
return stp;
}
@@ -3769,7 +3914,7 @@ check_lock_length(u64 offset, u64 length)
LOFF_OVERFLOW(offset, length)));
}
-static void get_lock_access(struct nfs4_stateid *lock_stp, u32 access)
+static void get_lock_access(struct nfs4_ol_stateid *lock_stp, u32 access)
{
struct nfs4_file *fp = lock_stp->st_file;
int oflag = nfs4_access_to_omode(access);
@@ -3787,15 +3932,16 @@ __be32
nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_lock *lock)
{
- struct nfs4_stateowner *open_sop = NULL;
- struct nfs4_stateowner *lock_sop = NULL;
- struct nfs4_stateid *lock_stp;
+ struct nfs4_openowner *open_sop = NULL;
+ struct nfs4_lockowner *lock_sop = NULL;
+ struct nfs4_ol_stateid *lock_stp;
struct nfs4_file *fp;
struct file *filp = NULL;
struct file_lock file_lock;
struct file_lock conflock;
__be32 status = 0;
unsigned int strhashval;
+ int lkflg;
int err;
dprintk("NFSD: nfsd4_lock: start=%Ld length=%Ld\n",
@@ -3819,7 +3965,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* Use open owner and open stateid to create lock owner and
* lock stateid.
*/
- struct nfs4_stateid *open_stp = NULL;
+ struct nfs4_ol_stateid *open_stp = NULL;
status = nfserr_stale_clientid;
if (!nfsd4_has_session(cstate) &&
@@ -3827,26 +3973,29 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
/* validate and update open stateid and open seqid */
- status = nfs4_preprocess_seqid_op(cstate,
+ status = nfs4_preprocess_confirmed_seqid_op(cstate,
lock->lk_new_open_seqid,
&lock->lk_new_open_stateid,
- OPEN_STATE,
- &lock->lk_replay_owner, &open_stp,
- lock);
+ &open_stp);
if (status)
goto out;
- open_sop = lock->lk_replay_owner;
+ open_sop = openowner(open_stp->st_stateowner);
+ status = nfserr_bad_stateid;
+ if (!nfsd4_has_session(cstate) &&
+ !same_clid(&open_sop->oo_owner.so_client->cl_clientid,
+ &lock->v.new.clientid))
+ goto out;
/* create lockowner and lock stateid */
fp = open_stp->st_file;
- strhashval = lock_ownerstr_hashval(fp->fi_inode,
- open_sop->so_client->cl_clientid.cl_id,
+ strhashval = lock_ownerstr_hashval(fp->fi_inode,
+ open_sop->oo_owner.so_client->cl_clientid.cl_id,
&lock->v.new.owner);
/* XXX: Do we need to check for duplicate stateowners on
* the same file, or should they just be allowed (and
* create new stateids)? */
status = nfserr_jukebox;
lock_sop = alloc_init_lock_stateowner(strhashval,
- open_sop->so_client, open_stp, lock);
+ open_sop->oo_owner.so_client, open_stp, lock);
if (lock_sop == NULL)
goto out;
lock_stp = alloc_init_lock_stateid(lock_sop, fp, open_stp);
@@ -3855,16 +4004,20 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
} else {
/* lock (lock owner + lock stateid) already exists */
status = nfs4_preprocess_seqid_op(cstate,
- lock->lk_old_lock_seqid,
- &lock->lk_old_lock_stateid,
- LOCK_STATE,
- &lock->lk_replay_owner, &lock_stp, lock);
+ lock->lk_old_lock_seqid,
+ &lock->lk_old_lock_stateid,
+ NFS4_LOCK_STID, &lock_stp);
if (status)
goto out;
- lock_sop = lock->lk_replay_owner;
+ lock_sop = lockowner(lock_stp->st_stateowner);
fp = lock_stp->st_file;
}
- /* lock->lk_replay_owner and lock_stp have been created or found */
+ /* lock_sop and lock_stp have been created or found */
+
+ lkflg = setlkflg(lock->lk_type);
+ status = nfs4_check_openmode(lock_stp, lkflg);
+ if (status)
+ goto out;
status = nfserr_grace;
if (locks_in_grace() && !lock->lk_reclaim)
@@ -3915,8 +4068,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
err = vfs_lock_file(filp, F_SETLK, &file_lock, &conflock);
switch (-err) {
case 0: /* success! */
- update_stateid(&lock_stp->st_stateid);
- memcpy(&lock->lk_resp_stateid, &lock_stp->st_stateid,
+ update_stateid(&lock_stp->st_stid.sc_stateid);
+ memcpy(&lock->lk_resp_stateid, &lock_stp->st_stid.sc_stateid,
sizeof(stateid_t));
status = 0;
break;
@@ -3936,11 +4089,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
out:
if (status && lock->lk_is_new && lock_sop)
release_lockowner(lock_sop);
- if (lock->lk_replay_owner) {
- nfs4_get_stateowner(lock->lk_replay_owner);
- cstate->replay_owner = lock->lk_replay_owner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
}
@@ -3970,6 +4120,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
{
struct inode *inode;
struct file_lock file_lock;
+ struct nfs4_lockowner *lo;
__be32 status;
if (locks_in_grace())
@@ -3978,19 +4129,14 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (check_lock_length(lockt->lt_offset, lockt->lt_length))
return nfserr_inval;
- lockt->lt_stateowner = NULL;
nfs4_lock_state();
status = nfserr_stale_clientid;
if (!nfsd4_has_session(cstate) && STALE_CLIENTID(&lockt->lt_clientid))
goto out;
- if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {
- dprintk("NFSD: nfsd4_lockt: fh_verify() failed!\n");
- if (status == nfserr_symlink)
- status = nfserr_inval;
+ if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
goto out;
- }
inode = cstate->current_fh.fh_dentry->d_inode;
locks_init_lock(&file_lock);
@@ -4009,10 +4155,9 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
}
- lockt->lt_stateowner = find_lockstateowner_str(inode,
- &lockt->lt_clientid, &lockt->lt_owner);
- if (lockt->lt_stateowner)
- file_lock.fl_owner = (fl_owner_t)lockt->lt_stateowner;
+ lo = find_lockowner_str(inode, &lockt->lt_clientid, &lockt->lt_owner);
+ if (lo)
+ file_lock.fl_owner = (fl_owner_t)lo;
file_lock.fl_pid = current->tgid;
file_lock.fl_flags = FL_POSIX;
@@ -4038,7 +4183,7 @@ __be32
nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_locku *locku)
{
- struct nfs4_stateid *stp;
+ struct nfs4_ol_stateid *stp;
struct file *filp = NULL;
struct file_lock file_lock;
__be32 status;
@@ -4053,13 +4198,10 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(cstate,
- locku->lu_seqid,
- &locku->lu_stateid,
- LOCK_STATE,
- &locku->lu_stateowner, &stp, NULL)))
+ status = nfs4_preprocess_seqid_op(cstate, locku->lu_seqid,
+ &locku->lu_stateid, NFS4_LOCK_STID, &stp);
+ if (status)
goto out;
-
filp = find_any_file(stp->st_file);
if (!filp) {
status = nfserr_lock_range;
@@ -4068,7 +4210,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
BUG_ON(!filp);
locks_init_lock(&file_lock);
file_lock.fl_type = F_UNLCK;
- file_lock.fl_owner = (fl_owner_t) locku->lu_stateowner;
+ file_lock.fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
file_lock.fl_pid = current->tgid;
file_lock.fl_file = filp;
file_lock.fl_flags = FL_POSIX;
@@ -4089,15 +4231,12 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
/*
* OK, unlock succeeded; the only thing left to do is update the stateid.
*/
- update_stateid(&stp->st_stateid);
- memcpy(&locku->lu_stateid, &stp->st_stateid, sizeof(stateid_t));
+ update_stateid(&stp->st_stid.sc_stateid);
+ memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
out:
- if (locku->lu_stateowner) {
- nfs4_get_stateowner(locku->lu_stateowner);
- cstate->replay_owner = locku->lu_stateowner;
- }
- nfs4_unlock_state();
+ if (!cstate->replay_owner)
+ nfs4_unlock_state();
return status;
out_nfserr:
@@ -4111,7 +4250,7 @@ out_nfserr:
* 0: no locks held by lockowner
*/
static int
-check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner)
+check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner)
{
struct file_lock **flpp;
struct inode *inode = filp->fi_inode;
@@ -4136,7 +4275,8 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
{
clientid_t *clid = &rlockowner->rl_clientid;
struct nfs4_stateowner *sop;
- struct nfs4_stateid *stp;
+ struct nfs4_lockowner *lo;
+ struct nfs4_ol_stateid *stp;
struct xdr_netobj *owner = &rlockowner->rl_owner;
struct list_head matches;
int i;
@@ -4160,16 +4300,15 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
* data structures. */
INIT_LIST_HEAD(&matches);
for (i = 0; i < LOCK_HASH_SIZE; i++) {
- list_for_each_entry(sop, &lock_ownerid_hashtbl[i], so_idhash) {
+ list_for_each_entry(sop, &lock_ownerstr_hashtbl[i], so_strhash) {
if (!same_owner_str(sop, owner, clid))
continue;
list_for_each_entry(stp, &sop->so_stateids,
st_perstateowner) {
- if (check_for_locks(stp->st_file, sop))
+ lo = lockowner(sop);
+ if (check_for_locks(stp->st_file, lo))
goto out;
- /* Note: so_perclient unused for lockowners,
- * so it's OK to fool with here. */
- list_add(&sop->so_perclient, &matches);
+ list_add(&lo->lo_list, &matches);
}
}
}
@@ -4178,12 +4317,12 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
* have been checked. */
status = nfs_ok;
while (!list_empty(&matches)) {
- sop = list_entry(matches.next, struct nfs4_stateowner,
- so_perclient);
+ lo = list_entry(matches.next, struct nfs4_lockowner,
+ lo_list);
/* unhash_stateowner deletes so_perclient only
* for openowners. */
- list_del(&sop->so_perclient);
- release_lockowner(sop);
+ list_del(&lo->lo_list);
+ release_lockowner(lo);
}
out:
nfs4_unlock_state();
@@ -4305,16 +4444,10 @@ nfs4_state_init(void)
for (i = 0; i < FILE_HASH_SIZE; i++) {
INIT_LIST_HEAD(&file_hashtbl[i]);
}
- for (i = 0; i < OWNER_HASH_SIZE; i++) {
- INIT_LIST_HEAD(&ownerstr_hashtbl[i]);
- INIT_LIST_HEAD(&ownerid_hashtbl[i]);
- }
- for (i = 0; i < STATEID_HASH_SIZE; i++) {
- INIT_LIST_HEAD(&stateid_hashtbl[i]);
- INIT_LIST_HEAD(&lockstateid_hashtbl[i]);
+ for (i = 0; i < OPEN_OWNER_HASH_SIZE; i++) {
+ INIT_LIST_HEAD(&open_ownerstr_hashtbl[i]);
}
for (i = 0; i < LOCK_HASH_SIZE; i++) {
- INIT_LIST_HEAD(&lock_ownerid_hashtbl[i]);
INIT_LIST_HEAD(&lock_ownerstr_hashtbl[i]);
}
memset(&onestateid, ~0, sizeof(stateid_t));
@@ -4331,7 +4464,7 @@ nfsd4_load_reboot_recovery_data(void)
int status;
nfs4_lock_state();
- nfsd4_init_recdir(user_recovery_dirname);
+ nfsd4_init_recdir();
status = nfsd4_recdir_load();
nfs4_unlock_state();
if (status)
@@ -4440,40 +4573,3 @@ nfs4_state_shutdown(void)
nfs4_unlock_state();
nfsd4_destroy_callback_queue();
}
-
-/*
- * user_recovery_dirname is protected by the nfsd_mutex since it's only
- * accessed when nfsd is starting.
- */
-static void
-nfs4_set_recdir(char *recdir)
-{
- strcpy(user_recovery_dirname, recdir);
-}
-
-/*
- * Change the NFSv4 recovery directory to recdir.
- */
-int
-nfs4_reset_recoverydir(char *recdir)
-{
- int status;
- struct path path;
-
- status = kern_path(recdir, LOOKUP_FOLLOW, &path);
- if (status)
- return status;
- status = -ENOTDIR;
- if (S_ISDIR(path.dentry->d_inode->i_mode)) {
- nfs4_set_recdir(recdir);
- status = 0;
- }
- path_put(&path);
- return status;
-}
-
-char *
-nfs4_recoverydir(void)
-{
- return user_recovery_dirname;
-}
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 45f53ae..9d2c52b 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -44,13 +44,15 @@
#include <linux/namei.h>
#include <linux/statfs.h>
#include <linux/utsname.h>
+#include <linux/pagemap.h>
#include <linux/sunrpc/svcauth_gss.h>
#include "idmap.h"
#include "acl.h"
#include "xdr4.h"
#include "vfs.h"
-
+#include "state.h"
+#include "cache.h"
#define NFSDDBG_FACILITY NFSDDBG_XDR
@@ -131,6 +133,22 @@ xdr_error: \
} \
} while (0)
+static void save_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
+{
+ savep->p = argp->p;
+ savep->end = argp->end;
+ savep->pagelen = argp->pagelen;
+ savep->pagelist = argp->pagelist;
+}
+
+static void restore_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
+{
+ argp->p = savep->p;
+ argp->end = savep->end;
+ argp->pagelen = savep->pagelen;
+ argp->pagelist = savep->pagelist;
+}
+
static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
{
/* We want more bytes than seem to be available.
@@ -159,8 +177,8 @@ static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
*/
memcpy(p, argp->p, avail);
/* step to next page */
- argp->pagelist++;
argp->p = page_address(argp->pagelist[0]);
+ argp->pagelist++;
if (argp->pagelen < PAGE_SIZE) {
argp->end = argp->p + (argp->pagelen>>2);
argp->pagelen = 0;
@@ -432,7 +450,6 @@ nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
{
DECODE_HEAD;
- close->cl_stateowner = NULL;
READ_BUF(4);
READ32(close->cl_seqid);
return nfsd4_decode_stateid(argp, &close->cl_stateid);
@@ -465,7 +482,18 @@ nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create
READ_BUF(4);
READ32(create->cr_linklen);
READ_BUF(create->cr_linklen);
- SAVEMEM(create->cr_linkname, create->cr_linklen);
+ /*
+ * The VFS will want a null-terminated string, and
+ * null-terminating in place isn't safe since this might
+ * end on a page boundary:
+ */
+ create->cr_linkname =
+ kmalloc(create->cr_linklen + 1, GFP_KERNEL);
+ if (!create->cr_linkname)
+ return nfserr_jukebox;
+ memcpy(create->cr_linkname, p, create->cr_linklen);
+ create->cr_linkname[create->cr_linklen] = '\0';
+ defer_free(argp, kfree, create->cr_linkname);
break;
case NF4BLK:
case NF4CHR:
@@ -527,7 +555,6 @@ nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
{
DECODE_HEAD;
- lock->lk_replay_owner = NULL;
/*
* type, reclaim(boolean), offset, length, new_lock_owner(boolean)
*/
@@ -587,7 +614,6 @@ nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
{
DECODE_HEAD;
- locku->lu_stateowner = NULL;
READ_BUF(8);
READ32(locku->lu_type);
if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
@@ -618,6 +644,83 @@ nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup
DECODE_TAIL;
}
+static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x)
+{
+ __be32 *p;
+ u32 w;
+
+ READ_BUF(4);
+ READ32(w);
+ *x = w;
+ switch (w & NFS4_SHARE_ACCESS_MASK) {
+ case NFS4_SHARE_ACCESS_READ:
+ case NFS4_SHARE_ACCESS_WRITE:
+ case NFS4_SHARE_ACCESS_BOTH:
+ break;
+ default:
+ return nfserr_bad_xdr;
+ }
+ w &= ~NFS4_SHARE_ACCESS_MASK;
+ if (!w)
+ return nfs_ok;
+ if (!argp->minorversion)
+ return nfserr_bad_xdr;
+ switch (w & NFS4_SHARE_WANT_MASK) {
+ case NFS4_SHARE_WANT_NO_PREFERENCE:
+ case NFS4_SHARE_WANT_READ_DELEG:
+ case NFS4_SHARE_WANT_WRITE_DELEG:
+ case NFS4_SHARE_WANT_ANY_DELEG:
+ case NFS4_SHARE_WANT_NO_DELEG:
+ case NFS4_SHARE_WANT_CANCEL:
+ break;
+ default:
+ return nfserr_bad_xdr;
+ }
+ w &= ~NFS4_SHARE_WANT_MASK;
+ if (!w)
+ return nfs_ok;
+ switch (w) {
+ case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL:
+ case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED:
+ case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL |
+ NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED):
+ return nfs_ok;
+ }
+xdr_error:
+ return nfserr_bad_xdr;
+}
+
+static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x)
+{
+ __be32 *p;
+
+ READ_BUF(4);
+ READ32(*x);
+ /* Note: unlinke access bits, deny bits may be zero. */
+ if (*x & ~NFS4_SHARE_DENY_BOTH)
+ return nfserr_bad_xdr;
+ return nfs_ok;
+xdr_error:
+ return nfserr_bad_xdr;
+}
+
+static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o)
+{
+ __be32 *p;
+
+ READ_BUF(4);
+ READ32(o->len);
+
+ if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT)
+ return nfserr_bad_xdr;
+
+ READ_BUF(o->len);
+ SAVEMEM(o->data, o->len);
+ return nfs_ok;
+xdr_error:
+ return nfserr_bad_xdr;
+}
+
static __be32
nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
{
@@ -625,19 +728,23 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
memset(open->op_bmval, 0, sizeof(open->op_bmval));
open->op_iattr.ia_valid = 0;
- open->op_stateowner = NULL;
+ open->op_openowner = NULL;
/* seqid, share_access, share_deny, clientid, ownerlen */
- READ_BUF(16 + sizeof(clientid_t));
+ READ_BUF(4);
READ32(open->op_seqid);
- READ32(open->op_share_access);
- READ32(open->op_share_deny);
+ status = nfsd4_decode_share_access(argp, &open->op_share_access);
+ if (status)
+ goto xdr_error;
+ status = nfsd4_decode_share_deny(argp, &open->op_share_deny);
+ if (status)
+ goto xdr_error;
+ READ_BUF(sizeof(clientid_t));
COPYMEM(&open->op_clientid, sizeof(clientid_t));
- READ32(open->op_owner.len);
-
- /* owner, open_flag */
- READ_BUF(open->op_owner.len + 4);
- SAVEMEM(open->op_owner.data, open->op_owner.len);
+ status = nfsd4_decode_opaque(argp, &open->op_owner);
+ if (status)
+ goto xdr_error;
+ READ_BUF(4);
READ32(open->op_create);
switch (open->op_create) {
case NFS4_OPEN_NOCREATE:
@@ -703,6 +810,19 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
return status;
break;
+ case NFS4_OPEN_CLAIM_FH:
+ case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
+ if (argp->minorversion < 1)
+ goto xdr_error;
+ /* void */
+ break;
+ case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
+ if (argp->minorversion < 1)
+ goto xdr_error;
+ status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
+ if (status)
+ return status;
+ break;
default:
goto xdr_error;
}
@@ -715,7 +835,6 @@ nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_con
{
DECODE_HEAD;
- open_conf->oc_stateowner = NULL;
status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);
if (status)
return status;
@@ -730,15 +849,17 @@ nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_d
{
DECODE_HEAD;
- open_down->od_stateowner = NULL;
status = nfsd4_decode_stateid(argp, &open_down->od_stateid);
if (status)
return status;
- READ_BUF(12);
+ READ_BUF(4);
READ32(open_down->od_seqid);
- READ32(open_down->od_share_access);
- READ32(open_down->od_share_deny);
-
+ status = nfsd4_decode_share_access(argp, &open_down->od_share_access);
+ if (status)
+ return status;
+ status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny);
+ if (status)
+ return status;
DECODE_TAIL;
}
@@ -879,12 +1000,13 @@ nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclient
{
DECODE_HEAD;
- READ_BUF(12);
+ READ_BUF(8);
COPYMEM(setclientid->se_verf.data, 8);
- READ32(setclientid->se_namelen);
- READ_BUF(setclientid->se_namelen + 8);
- SAVEMEM(setclientid->se_name, setclientid->se_namelen);
+ status = nfsd4_decode_opaque(argp, &setclientid->se_name);
+ if (status)
+ return nfserr_bad_xdr;
+ READ_BUF(8);
READ32(setclientid->se_callback_prog);
READ32(setclientid->se_callback_netid_len);
@@ -1027,11 +1149,9 @@ nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
READ_BUF(NFS4_VERIFIER_SIZE);
COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
- READ_BUF(4);
- READ32(exid->clname.len);
-
- READ_BUF(exid->clname.len);
- SAVEMEM(exid->clname.data, exid->clname.len);
+ status = nfsd4_decode_opaque(argp, &exid->clname);
+ if (status)
+ return nfserr_bad_xdr;
READ_BUF(4);
READ32(exid->flags);
@@ -1240,6 +1360,19 @@ nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
}
static __be32
+nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp,
+ struct nfsd4_free_stateid *free_stateid)
+{
+ DECODE_HEAD;
+
+ READ_BUF(sizeof(stateid_t));
+ READ32(free_stateid->fr_stateid.si_generation);
+ COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t));
+
+ DECODE_TAIL;
+}
+
+static __be32
nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
struct nfsd4_sequence *seq)
{
@@ -1255,6 +1388,50 @@ nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
DECODE_TAIL;
}
+static __be32
+nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid)
+{
+ unsigned int nbytes;
+ stateid_t si;
+ int i;
+ __be32 *p;
+ __be32 status;
+
+ READ_BUF(4);
+ test_stateid->ts_num_ids = ntohl(*p++);
+
+ nbytes = test_stateid->ts_num_ids * sizeof(stateid_t);
+ if (nbytes > (u32)((char *)argp->end - (char *)argp->p))
+ goto xdr_error;
+
+ test_stateid->ts_saved_args = argp;
+ save_buf(argp, &test_stateid->ts_savedp);
+
+ for (i = 0; i < test_stateid->ts_num_ids; i++) {
+ status = nfsd4_decode_stateid(argp, &si);
+ if (status)
+ return status;
+ }
+
+ status = 0;
+out:
+ return status;
+xdr_error:
+ dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__);
+ status = nfserr_bad_xdr;
+ goto out;
+}
+
+static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc)
+{
+ DECODE_HEAD;
+
+ READ_BUF(8);
+ COPYMEM(&dc->clientid, 8);
+
+ DECODE_TAIL;
+}
+
static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc)
{
DECODE_HEAD;
@@ -1364,7 +1541,7 @@ static nfsd4_dec nfsd41_dec_ops[] = {
[OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id,
[OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session,
[OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session,
- [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid,
[OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp,
@@ -1374,9 +1551,9 @@ static nfsd4_dec nfsd41_dec_ops[] = {
[OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name,
[OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence,
[OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid,
[OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
- [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid,
[OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete,
};
@@ -1396,6 +1573,7 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
DECODE_HEAD;
struct nfsd4_op *op;
struct nfsd4_minorversion_ops *ops;
+ bool cachethis = false;
int i;
/*
@@ -1477,7 +1655,16 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
argp->opcnt = i+1;
break;
}
+ /*
+ * We'll try to cache the result in the DRC if any one
+ * op in the compound wants to be cached:
+ */
+ cachethis |= nfsd4_cache_this_op(op);
}
+ /* Sessions make the DRC unnecessary: */
+ if (argp->minorversion)
+ cachethis = false;
+ argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
DECODE_TAIL;
}
@@ -1542,18 +1729,6 @@ static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
\
save = resp->p;
-static bool seqid_mutating_err(__be32 err)
-{
- /* rfc 3530 section 8.1.5: */
- return err != nfserr_stale_clientid &&
- err != nfserr_stale_stateid &&
- err != nfserr_bad_stateid &&
- err != nfserr_bad_seqid &&
- err != nfserr_bad_xdr &&
- err != nfserr_resource &&
- err != nfserr_nofilehandle;
-}
-
/*
* Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This
* is where sequence id's are incremented, and the replay cache is filled.
@@ -1561,15 +1736,20 @@ static bool seqid_mutating_err(__be32 err)
* we know whether the error to be returned is a sequence id mutating error.
*/
-#define ENCODE_SEQID_OP_TAIL(stateowner) do { \
- if (seqid_mutating_err(nfserr) && stateowner) { \
- stateowner->so_seqid++; \
- stateowner->so_replay.rp_status = nfserr; \
- stateowner->so_replay.rp_buflen = \
- (((char *)(resp)->p - (char *)save)); \
- memcpy(stateowner->so_replay.rp_buf, save, \
- stateowner->so_replay.rp_buflen); \
- } } while (0);
+static void encode_seqid_op_tail(struct nfsd4_compoundres *resp, __be32 *save, __be32 nfserr)
+{
+ struct nfs4_stateowner *stateowner = resp->cstate.replay_owner;
+
+ if (seqid_mutating_err(ntohl(nfserr)) && stateowner) {
+ stateowner->so_seqid++;
+ stateowner->so_replay.rp_status = nfserr;
+ stateowner->so_replay.rp_buflen =
+ (char *)resp->p - (char *)save;
+ memcpy(stateowner->so_replay.rp_buf, save,
+ stateowner->so_replay.rp_buflen);
+ nfsd4_purge_closed_stateid(stateowner);
+ }
+}
/* Encode as an array of strings the string given with components
* separated @sep.
@@ -1628,36 +1808,89 @@ static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location,
}
/*
- * Return the path to an export point in the pseudo filesystem namespace
- * Returned string is safe to use as long as the caller holds a reference
- * to @exp.
+ * Encode a path in RFC3530 'pathname4' format
*/
-static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat)
+static __be32 nfsd4_encode_path(const struct path *root,
+ const struct path *path, __be32 **pp, int *buflen)
{
- struct svc_fh tmp_fh;
- char *path = NULL, *rootpath;
- size_t rootlen;
+ struct path cur = {
+ .mnt = path->mnt,
+ .dentry = path->dentry,
+ };
+ __be32 *p = *pp;
+ struct dentry **components = NULL;
+ unsigned int ncomponents = 0;
+ __be32 err = nfserr_jukebox;
- fh_init(&tmp_fh, NFS4_FHSIZE);
- *stat = exp_pseudoroot(rqstp, &tmp_fh);
- if (*stat)
- return NULL;
- rootpath = tmp_fh.fh_export->ex_pathname;
+ dprintk("nfsd4_encode_components(");
+
+ path_get(&cur);
+ /* First walk the path up to the nfsd root, and store the
+ * dentries/path components in an array.
+ */
+ for (;;) {
+ if (cur.dentry == root->dentry && cur.mnt == root->mnt)
+ break;
+ if (cur.dentry == cur.mnt->mnt_root) {
+ if (follow_up(&cur))
+ continue;
+ goto out_free;
+ }
+ if ((ncomponents & 15) == 0) {
+ struct dentry **new;
+ new = krealloc(components,
+ sizeof(*new) * (ncomponents + 16),
+ GFP_KERNEL);
+ if (!new)
+ goto out_free;
+ components = new;
+ }
+ components[ncomponents++] = cur.dentry;
+ cur.dentry = dget_parent(cur.dentry);
+ }
- path = exp->ex_pathname;
+ *buflen -= 4;
+ if (*buflen < 0)
+ goto out_free;
+ WRITE32(ncomponents);
- rootlen = strlen(rootpath);
- if (strncmp(path, rootpath, rootlen)) {
- dprintk("nfsd: fs_locations failed;"
- "%s is not contained in %s\n", path, rootpath);
- *stat = nfserr_notsupp;
- path = NULL;
- goto out;
+ while (ncomponents) {
+ struct dentry *dentry = components[ncomponents - 1];
+ unsigned int len = dentry->d_name.len;
+
+ *buflen -= 4 + (XDR_QUADLEN(len) << 2);
+ if (*buflen < 0)
+ goto out_free;
+ WRITE32(len);
+ WRITEMEM(dentry->d_name.name, len);
+ dprintk("/%s", dentry->d_name.name);
+ dput(dentry);
+ ncomponents--;
}
- path += rootlen;
-out:
- fh_put(&tmp_fh);
- return path;
+
+ *pp = p;
+ err = 0;
+out_free:
+ dprintk(")\n");
+ while (ncomponents)
+ dput(components[--ncomponents]);
+ kfree(components);
+ path_put(&cur);
+ return err;
+}
+
+static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp,
+ const struct path *path, __be32 **pp, int *buflen)
+{
+ struct svc_export *exp_ps;
+ __be32 res;
+
+ exp_ps = rqst_find_fsidzero_export(rqstp);
+ if (IS_ERR(exp_ps))
+ return nfserrno(PTR_ERR(exp_ps));
+ res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen);
+ exp_put(exp_ps);
+ return res;
}
/*
@@ -1671,11 +1904,8 @@ static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
int i;
__be32 *p = *pp;
struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
- char *root = nfsd4_path(rqstp, exp, &status);
- if (status)
- return status;
- status = nfsd4_encode_components('/', root, &p, buflen);
+ status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen);
if (status)
return status;
if ((*buflen -= 4) < 0)
@@ -1691,12 +1921,19 @@ static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
return 0;
}
-static u32 nfs4_ftypes[16] = {
- NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
- NF4DIR, NF4BAD, NF4BLK, NF4BAD,
- NF4REG, NF4BAD, NF4LNK, NF4BAD,
- NF4SOCK, NF4BAD, NF4LNK, NF4BAD,
-};
+static u32 nfs4_file_type(umode_t mode)
+{
+ switch (mode & S_IFMT) {
+ case S_IFIFO: return NF4FIFO;
+ case S_IFCHR: return NF4CHR;
+ case S_IFDIR: return NF4DIR;
+ case S_IFBLK: return NF4BLK;
+ case S_IFLNK: return NF4LNK;
+ case S_IFREG: return NF4REG;
+ case S_IFSOCK: return NF4SOCK;
+ default: return NF4BAD;
+ };
+}
static __be32
nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
@@ -1809,8 +2046,8 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
if (err)
goto out_nfserr;
- if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
- FATTR4_WORD0_MAXNAME)) ||
+ if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE |
+ FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
err = vfs_statfs(&path, &statfs);
@@ -1885,7 +2122,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
if (bmval0 & FATTR4_WORD0_TYPE) {
if ((buflen -= 4) < 0)
goto out_resource;
- dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12];
+ dummy = nfs4_file_type(stat.mode);
if (dummy == NF4BAD)
goto out_serverfault;
WRITE32(dummy);
@@ -2187,6 +2424,8 @@ out_acl:
WRITE64(stat.ino);
}
if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
+ if ((buflen -= 16) < 0)
+ goto out_resource;
WRITE32(3);
WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
@@ -2416,7 +2655,7 @@ nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_c
if (!nfserr)
nfsd4_encode_stateid(resp, &close->cl_stateid);
- ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
+ encode_seqid_op_tail(resp, save, nfserr);
return nfserr;
}
@@ -2492,17 +2731,18 @@ nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh
static void
nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
{
+ struct xdr_netobj *conf = &ld->ld_owner;
__be32 *p;
- RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
+ RESERVE_SPACE(32 + XDR_LEN(conf->len));
WRITE64(ld->ld_start);
WRITE64(ld->ld_length);
WRITE32(ld->ld_type);
- if (ld->ld_sop) {
+ if (conf->len) {
WRITEMEM(&ld->ld_clientid, 8);
- WRITE32(ld->ld_sop->so_owner.len);
- WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len);
- kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner);
+ WRITE32(conf->len);
+ WRITEMEM(conf->data, conf->len);
+ kfree(conf->data);
} else { /* non - nfsv4 lock in conflict, no clientid nor owner */
WRITE64((u64)0); /* clientid */
WRITE32(0); /* length of owner name */
@@ -2520,7 +2760,7 @@ nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lo
else if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lock->lk_denied);
- ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
+ encode_seqid_op_tail(resp, save, nfserr);
return nfserr;
}
@@ -2540,7 +2780,7 @@ nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_l
if (!nfserr)
nfsd4_encode_stateid(resp, &locku->lu_stateid);
- ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
+ encode_seqid_op_tail(resp, save, nfserr);
return nfserr;
}
@@ -2621,7 +2861,7 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
}
/* XXX save filehandle here */
out:
- ENCODE_SEQID_OP_TAIL(open->op_stateowner);
+ encode_seqid_op_tail(resp, save, nfserr);
return nfserr;
}
@@ -2633,7 +2873,7 @@ nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct
if (!nfserr)
nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
- ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
+ encode_seqid_op_tail(resp, save, nfserr);
return nfserr;
}
@@ -2645,7 +2885,7 @@ nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struc
if (!nfserr)
nfsd4_encode_stateid(resp, &od->od_stateid);
- ENCODE_SEQID_OP_TAIL(od->od_stateowner);
+ encode_seqid_op_tail(resp, save, nfserr);
return nfserr;
}
@@ -2692,8 +2932,6 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
&maxcount);
- if (nfserr == nfserr_symlink)
- nfserr = nfserr_inval;
if (nfserr)
return nfserr;
eof = (read->rd_offset + maxcount >=
@@ -2823,8 +3061,6 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
readdir->common.err == nfserr_toosmall &&
readdir->buffer == page)
nfserr = nfserr_toosmall;
- if (nfserr == nfserr_symlink)
- nfserr = nfserr_notdir;
if (nfserr)
goto err_no_verf;
@@ -3128,6 +3364,21 @@ nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
}
static __be32
+nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_free_stateid *free_stateid)
+{
+ __be32 *p;
+
+ if (nfserr)
+ return nfserr;
+
+ RESERVE_SPACE(4);
+ WRITE32(nfserr);
+ ADJUST_ARGS();
+ return nfserr;
+}
+
+static __be32
nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_sequence *seq)
{
@@ -3140,9 +3391,9 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
WRITE32(seq->seqid);
WRITE32(seq->slotid);
- WRITE32(seq->maxslots);
- /* For now: target_maxslots = maxslots */
- WRITE32(seq->maxslots);
+ /* Note slotid's are numbered from zero: */
+ WRITE32(seq->maxslots - 1); /* sr_highest_slotid */
+ WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */
WRITE32(seq->status_flags);
ADJUST_ARGS();
@@ -3150,6 +3401,37 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
return 0;
}
+__be32
+nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_test_stateid *test_stateid)
+{
+ struct nfsd4_compoundargs *argp;
+ struct nfs4_client *cl = resp->cstate.session->se_client;
+ stateid_t si;
+ __be32 *p;
+ int i;
+ int valid;
+
+ restore_buf(test_stateid->ts_saved_args, &test_stateid->ts_savedp);
+ argp = test_stateid->ts_saved_args;
+
+ RESERVE_SPACE(4);
+ *p++ = htonl(test_stateid->ts_num_ids);
+ resp->p = p;
+
+ nfs4_lock_state();
+ for (i = 0; i < test_stateid->ts_num_ids; i++) {
+ nfsd4_decode_stateid(argp, &si);
+ valid = nfs4_validate_stateid(cl, &si);
+ RESERVE_SPACE(4);
+ *p++ = valid;
+ resp->p = p;
+ }
+ nfs4_unlock_state();
+
+ return nfserr;
+}
+
static __be32
nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
{
@@ -3208,7 +3490,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
[OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
[OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
[OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
- [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid,
[OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
[OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
[OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
@@ -3218,7 +3500,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
[OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name,
[OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
[OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
- [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid,
[OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
[OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
[OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
@@ -3226,34 +3508,29 @@ static nfsd4_enc nfsd4_enc_ops[] = {
/*
* Calculate the total amount of memory that the compound response has taken
- * after encoding the current operation.
+ * after encoding the current operation with pad.
*
- * pad: add on 8 bytes for the next operation's op_code and status so that
- * there is room to cache a failure on the next operation.
+ * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop()
+ * which was specified at nfsd4_operation, else pad is zero.
*
- * Compare this length to the session se_fmaxresp_cached.
+ * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached.
*
* Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
* will be at least a page and will therefore hold the xdr_buf head.
*/
-static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
+int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
{
- int status = 0;
struct xdr_buf *xb = &resp->rqstp->rq_res;
- struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
struct nfsd4_session *session = NULL;
struct nfsd4_slot *slot = resp->cstate.slot;
- u32 length, tlen = 0, pad = 8;
+ u32 length, tlen = 0;
if (!nfsd4_has_session(&resp->cstate))
- return status;
+ return 0;
session = resp->cstate.session;
- if (session == NULL || slot->sl_cachethis == 0)
- return status;
-
- if (resp->opcnt >= args->opcnt)
- pad = 0; /* this is the last operation */
+ if (session == NULL)
+ return 0;
if (xb->page_len == 0) {
length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
@@ -3266,10 +3543,14 @@ static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
length, xb->page_len, tlen, pad);
- if (length <= session->se_fchannel.maxresp_cached)
- return status;
- else
+ if (length > session->se_fchannel.maxresp_sz)
+ return nfserr_rep_too_big;
+
+ if (slot->sl_cachethis == 1 &&
+ length > session->se_fchannel.maxresp_cached)
return nfserr_rep_too_big_to_cache;
+
+ return 0;
}
void
@@ -3289,8 +3570,8 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
!nfsd4_enc_ops[op->opnum]);
op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
/* nfsd4_check_drc_limit guarantees enough room for error status */
- if (!op->status && nfsd4_check_drc_limit(resp))
- op->status = nfserr_rep_too_big_to_cache;
+ if (!op->status)
+ op->status = nfsd4_check_resp_size(resp, 0);
status:
/*
* Note: We write the status directly, instead of using WRITE32(),
@@ -3331,8 +3612,11 @@ nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
return xdr_ressize_check(rqstp, p);
}
-void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
+int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp)
{
+ struct svc_rqst *rqstp = rq;
+ struct nfsd4_compoundargs *args = rqstp->rq_argp;
+
if (args->ops != args->iops) {
kfree(args->ops);
args->ops = args->iops;
@@ -3345,13 +3629,12 @@ void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
tb->release(tb->buf);
kfree(tb);
}
+ return 1;
}
int
nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
{
- __be32 status;
-
args->p = p;
args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
args->pagelist = rqstp->rq_arg.pages;
@@ -3361,11 +3644,7 @@ nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_comp
args->ops = args->iops;
args->rqstp = rqstp;
- status = nfsd4_decode_compound(args);
- if (status) {
- nfsd4_release_compoundargs(args);
- }
- return !status;
+ return !nfsd4_decode_compound(args);
}
int
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 4666a20..2cbac34 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -118,7 +118,7 @@ hash_refile(struct svc_cacherep *rp)
* Note that no operation within the loop may sleep.
*/
int
-nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
+nfsd_cache_lookup(struct svc_rqst *rqstp)
{
struct hlist_node *hn;
struct hlist_head *rh;
@@ -128,6 +128,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
vers = rqstp->rq_vers,
proc = rqstp->rq_proc;
unsigned long age;
+ int type = rqstp->rq_cachetype;
int rtn;
rqstp->rq_cacherep = NULL;
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 2b1449d..c45a2ea 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -9,11 +9,11 @@
#include <linux/ctype.h>
#include <linux/sunrpc/svcsock.h>
-#include <linux/nfsd/syscall.h>
#include <linux/lockd/lockd.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/gss_api.h>
#include <linux/sunrpc/gss_krb5_enctypes.h>
+#include <linux/module.h>
#include "idmap.h"
#include "nfsd.h"
@@ -24,15 +24,6 @@
*/
enum {
NFSD_Root = 1,
-#ifdef CONFIG_NFSD_DEPRECATED
- NFSD_Svc,
- NFSD_Add,
- NFSD_Del,
- NFSD_Export,
- NFSD_Unexport,
- NFSD_Getfd,
- NFSD_Getfs,
-#endif
NFSD_List,
NFSD_Export_features,
NFSD_Fh,
@@ -59,15 +50,6 @@ enum {
/*
* write() for these nodes.
*/
-#ifdef CONFIG_NFSD_DEPRECATED
-static ssize_t write_svc(struct file *file, char *buf, size_t size);
-static ssize_t write_add(struct file *file, char *buf, size_t size);
-static ssize_t write_del(struct file *file, char *buf, size_t size);
-static ssize_t write_export(struct file *file, char *buf, size_t size);
-static ssize_t write_unexport(struct file *file, char *buf, size_t size);
-static ssize_t write_getfd(struct file *file, char *buf, size_t size);
-static ssize_t write_getfs(struct file *file, char *buf, size_t size);
-#endif
static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
@@ -83,15 +65,6 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
static ssize_t (*write_op[])(struct file *, char *, size_t) = {
-#ifdef CONFIG_NFSD_DEPRECATED
- [NFSD_Svc] = write_svc,
- [NFSD_Add] = write_add,
- [NFSD_Del] = write_del,
- [NFSD_Export] = write_export,
- [NFSD_Unexport] = write_unexport,
- [NFSD_Getfd] = write_getfd,
- [NFSD_Getfs] = write_getfs,
-#endif
[NFSD_Fh] = write_filehandle,
[NFSD_FO_UnlockIP] = write_unlock_ip,
[NFSD_FO_UnlockFS] = write_unlock_fs,
@@ -130,16 +103,6 @@ static ssize_t nfsctl_transaction_write(struct file *file, const char __user *bu
static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
{
-#ifdef CONFIG_NFSD_DEPRECATED
- static int warned;
- if (file->f_dentry->d_name.name[0] == '.' && !warned) {
- printk(KERN_INFO
- "Warning: \"%s\" uses deprecated NFSD interface: %s."
- " This will be removed in 2.6.40\n",
- current->comm, file->f_dentry->d_name.name);
- warned = 1;
- }
-#endif
if (! file->private_data) {
/* An attempt to read a transaction file without writing
* causes a 0-byte write so that the file can return
@@ -226,303 +189,6 @@ static const struct file_operations pool_stats_operations = {
* payload - write methods
*/
-#ifdef CONFIG_NFSD_DEPRECATED
-/**
- * write_svc - Start kernel's NFSD server
- *
- * Deprecated. /proc/fs/nfsd/threads is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_svc
- * svc_port: port number of this
- * server's listener
- * svc_nthreads: number of threads to start
- * size: size in bytes of passed in nfsctl_svc
- * Output:
- * On success: returns zero
- * On error: return code is negative errno value
- */
-static ssize_t write_svc(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_svc *data;
- int err;
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_svc*) buf;
- err = nfsd_svc(data->svc_port, data->svc_nthreads);
- if (err < 0)
- return err;
- return 0;
-}
-
-/**
- * write_add - Add or modify client entry in auth unix cache
- *
- * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_client
- * cl_ident: '\0'-terminated C string
- * containing domain name
- * of client
- * cl_naddr: no. of items in cl_addrlist
- * cl_addrlist: array of client addresses
- * cl_fhkeytype: ignored
- * cl_fhkeylen: ignored
- * cl_fhkey: ignored
- * size: size in bytes of passed in nfsctl_client
- * Output:
- * On success: returns zero
- * On error: return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since
- * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
- */
-static ssize_t write_add(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_client *data;
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_client *)buf;
- return exp_addclient(data);
-}
-
-/**
- * write_del - Remove client from auth unix cache
- *
- * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_client
- * cl_ident: '\0'-terminated C string
- * containing domain name
- * of client
- * cl_naddr: ignored
- * cl_addrlist: ignored
- * cl_fhkeytype: ignored
- * cl_fhkeylen: ignored
- * cl_fhkey: ignored
- * size: size in bytes of passed in nfsctl_client
- * Output:
- * On success: returns zero
- * On error: return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since
- * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
- */
-static ssize_t write_del(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_client *data;
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_client *)buf;
- return exp_delclient(data);
-}
-
-/**
- * write_export - Export part or all of a local file system
- *
- * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_export
- * ex_client: '\0'-terminated C string
- * containing domain name
- * of client allowed to access
- * this export
- * ex_path: '\0'-terminated C string
- * containing pathname of
- * directory in local file system
- * ex_dev: fsid to use for this export
- * ex_ino: ignored
- * ex_flags: export flags for this export
- * ex_anon_uid: UID to use for anonymous
- * requests
- * ex_anon_gid: GID to use for anonymous
- * requests
- * size: size in bytes of passed in nfsctl_export
- * Output:
- * On success: returns zero
- * On error: return code is negative errno value
- */
-static ssize_t write_export(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_export *data;
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_export*)buf;
- return exp_export(data);
-}
-
-/**
- * write_unexport - Unexport a previously exported file system
- *
- * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_export
- * ex_client: '\0'-terminated C string
- * containing domain name
- * of client no longer allowed
- * to access this export
- * ex_path: '\0'-terminated C string
- * containing pathname of
- * directory in local file system
- * ex_dev: ignored
- * ex_ino: ignored
- * ex_flags: ignored
- * ex_anon_uid: ignored
- * ex_anon_gid: ignored
- * size: size in bytes of passed in nfsctl_export
- * Output:
- * On success: returns zero
- * On error: return code is negative errno value
- */
-static ssize_t write_unexport(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_export *data;
-
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_export*)buf;
- return exp_unexport(data);
-}
-
-/**
- * write_getfs - Get a variable-length NFS file handle by path
- *
- * Deprecated. /proc/fs/nfsd/filehandle is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_fsparm
- * gd_addr: socket address of client
- * gd_path: '\0'-terminated C string
- * containing pathname of
- * directory in local file system
- * gd_maxlen: maximum size of returned file
- * handle
- * size: size in bytes of passed in nfsctl_fsparm
- * Output:
- * On success: passed-in buffer filled with a knfsd_fh structure
- * (a variable-length raw NFS file handle);
- * return code is the size in bytes of the file handle
- * On error: return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since gd_addr
- * is the same size as a struct sockaddr_in.
- */
-static ssize_t write_getfs(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_fsparm *data;
- struct sockaddr_in *sin;
- struct auth_domain *clp;
- int err = 0;
- struct knfsd_fh *res;
- struct in6_addr in6;
-
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_fsparm*)buf;
- err = -EPROTONOSUPPORT;
- if (data->gd_addr.sa_family != AF_INET)
- goto out;
- sin = (struct sockaddr_in *)&data->gd_addr;
- if (data->gd_maxlen > NFS3_FHSIZE)
- data->gd_maxlen = NFS3_FHSIZE;
-
- res = (struct knfsd_fh*)buf;
-
- exp_readlock();
-
- ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
-
- clp = auth_unix_lookup(&init_net, &in6);
- if (!clp)
- err = -EPERM;
- else {
- err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
- auth_domain_put(clp);
- }
- exp_readunlock();
- if (err == 0)
- err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
- out:
- return err;
-}
-
-/**
- * write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
- *
- * Deprecated. /proc/fs/nfsd/filehandle is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- * buf: struct nfsctl_fdparm
- * gd_addr: socket address of client
- * gd_path: '\0'-terminated C string
- * containing pathname of
- * directory in local file system
- * gd_version: fdparm structure version
- * size: size in bytes of passed in nfsctl_fdparm
- * Output:
- * On success: passed-in buffer filled with nfsctl_res
- * (a fixed-length raw NFS file handle);
- * return code is the size in bytes of the file handle
- * On error: return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since gd_addr
- * is the same size as a struct sockaddr_in.
- */
-static ssize_t write_getfd(struct file *file, char *buf, size_t size)
-{
- struct nfsctl_fdparm *data;
- struct sockaddr_in *sin;
- struct auth_domain *clp;
- int err = 0;
- struct knfsd_fh fh;
- char *res;
- struct in6_addr in6;
-
- if (size < sizeof(*data))
- return -EINVAL;
- data = (struct nfsctl_fdparm*)buf;
- err = -EPROTONOSUPPORT;
- if (data->gd_addr.sa_family != AF_INET)
- goto out;
- err = -EINVAL;
- if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
- goto out;
-
- res = buf;
- sin = (struct sockaddr_in *)&data->gd_addr;
- exp_readlock();
-
- ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
-
- clp = auth_unix_lookup(&init_net, &in6);
- if (!clp)
- err = -EPERM;
- else {
- err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
- auth_domain_put(clp);
- }
- exp_readunlock();
-
- if (err == 0) {
- memset(res,0, NFS_FHSIZE);
- memcpy(res, &fh.fh_base, fh.fh_size);
- err = NFS_FHSIZE;
- }
- out:
- return err;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
/**
* write_unlock_ip - Release all locks used by a client
@@ -1397,15 +1063,6 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
{
static struct tree_descr nfsd_files[] = {
-#ifdef CONFIG_NFSD_DEPRECATED
- [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
- [NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
- [NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
- [NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
- [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
- [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
- [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
-#endif
[NFSD_List] = {"exports", &exports_operations, S_IRUGO},
[NFSD_Export_features] = {"export_features",
&export_features_operations, S_IRUGO},
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 7ecfa24..58134a2 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -11,13 +11,39 @@
#include <linux/types.h>
#include <linux/mount.h>
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs3.h>
+#include <linux/nfs4.h>
+#include <linux/sunrpc/msg_prot.h>
+
#include <linux/nfsd/debug.h>
#include <linux/nfsd/export.h>
#include <linux/nfsd/stats.h>
+
/*
* nfsd version
*/
#define NFSD_SUPPORTED_MINOR_VERSION 1
+/*
+ * Maximum blocksizes supported by daemon under various circumstances.
+ */
+#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
+/* NFSv2 is limited by the protocol specification, see RFC 1094 */
+#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
+
+
+/*
+ * Largest number of bytes we need to allocate for an NFS
+ * call or reply. Used to control buffer sizes. We use
+ * the length of v3 WRITE, READDIR and READDIR replies
+ * which are an RPC header, up to 26 XDR units of reply
+ * data, and some page data.
+ *
+ * Note that accuracy here doesn't matter too much as the
+ * size is rounded up to a page size when allocating space.
+ */
+#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
struct readdir_cd {
__be32 err; /* 0, nfserr, or nfserr_eof */
@@ -335,6 +361,13 @@ static inline u32 nfsd_suppattrs2(u32 minorversion)
#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
NFSD_WRITEABLE_ATTRS_WORD2
+extern int nfsd4_is_junction(struct dentry *dentry);
+#else
+static inline int nfsd4_is_junction(struct dentry *dentry)
+{
+ return 0;
+}
+
#endif /* CONFIG_NFSD_V4 */
#endif /* LINUX_NFSD_NFSD_H */
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 90c6aa6..c763de5 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -59,28 +59,25 @@ static int nfsd_acceptable(void *expv, struct dentry *dentry)
* the write call).
*/
static inline __be32
-nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int type)
+nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int requested)
{
- /* Type can be negative when creating hardlinks - not to a dir */
- if (type > 0 && (mode & S_IFMT) != type) {
- if (rqstp->rq_vers == 4 && (mode & S_IFMT) == S_IFLNK)
- return nfserr_symlink;
- else if (type == S_IFDIR)
- return nfserr_notdir;
- else if ((mode & S_IFMT) == S_IFDIR)
- return nfserr_isdir;
- else
- return nfserr_inval;
- }
- if (type < 0 && (mode & S_IFMT) == -type) {
- if (rqstp->rq_vers == 4 && (mode & S_IFMT) == S_IFLNK)
- return nfserr_symlink;
- else if (type == -S_IFDIR)
- return nfserr_isdir;
- else
- return nfserr_notdir;
- }
- return 0;
+ mode &= S_IFMT;
+
+ if (requested == 0) /* the caller doesn't care */
+ return nfs_ok;
+ if (mode == requested)
+ return nfs_ok;
+ /*
+ * v4 has an error more specific than err_notdir which we should
+ * return in preference to err_notdir:
+ */
+ if (rqstp->rq_vers == 4 && mode == S_IFLNK)
+ return nfserr_symlink;
+ if (requested == S_IFDIR)
+ return nfserr_notdir;
+ if (mode == S_IFDIR)
+ return nfserr_isdir;
+ return nfserr_inval;
}
static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 18743c4..7595582 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -8,6 +8,7 @@
#include <linux/sched.h>
#include <linux/freezer.h>
+#include <linux/module.h>
#include <linux/fs_struct.h>
#include <linux/swap.h>
@@ -256,6 +257,8 @@ static void nfsd_last_thread(struct svc_serv *serv)
nfsd_serv = NULL;
nfsd_shutdown();
+ svc_rpcb_cleanup(serv);
+
printk(KERN_WARNING "nfsd: last server has exited, flushing export "
"cache\n");
nfsd_export_flush();
@@ -528,16 +531,9 @@ nfsd(void *vrqstp)
continue;
}
-
- /* Lock the export hash tables for reading. */
- exp_readlock();
-
validate_process_creds();
svc_process(rqstp);
validate_process_creds();
-
- /* Unlock export hash tables */
- exp_readunlock();
}
/* Clear signals before calling svc_exit_thread() */
@@ -577,8 +573,22 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
rqstp->rq_vers, rqstp->rq_proc);
proc = rqstp->rq_procinfo;
+ /*
+ * Give the xdr decoder a chance to change this if it wants
+ * (necessary in the NFSv4.0 compound case)
+ */
+ rqstp->rq_cachetype = proc->pc_cachetype;
+ /* Decode arguments */
+ xdr = proc->pc_decode;
+ if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
+ rqstp->rq_argp)) {
+ dprintk("nfsd: failed to decode arguments!\n");
+ *statp = rpc_garbage_args;
+ return 1;
+ }
+
/* Check whether we have this call in the cache. */
- switch (nfsd_cache_lookup(rqstp, proc->pc_cachetype)) {
+ switch (nfsd_cache_lookup(rqstp)) {
case RC_INTR:
case RC_DROPIT:
return 0;
@@ -588,16 +598,6 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
/* do it */
}
- /* Decode arguments */
- xdr = proc->pc_decode;
- if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
- rqstp->rq_argp)) {
- dprintk("nfsd: failed to decode arguments!\n");
- nfsd_cache_update(rqstp, RC_NOCACHE, NULL);
- *statp = rpc_garbage_args;
- return 1;
- }
-
/* need to grab the location to store the status, as
* nfsv4 does some encoding while processing
*/
@@ -633,7 +633,7 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
}
/* Store reply in cache. */
- nfsd_cache_update(rqstp, proc->pc_cachetype, statp + 1);
+ nfsd_cache_update(rqstp, rqstp->rq_cachetype, statp + 1);
return 1;
}
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 858c7ba..a3cf384 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -35,6 +35,7 @@
#ifndef _NFSD4_STATE_H
#define _NFSD4_STATE_H
+#include <linux/idr.h>
#include <linux/sunrpc/svc_xprt.h>
#include <linux/nfsd/nfsfh.h>
#include "nfsfh.h"
@@ -45,24 +46,20 @@ typedef struct {
} clientid_t;
typedef struct {
- u32 so_boot;
- u32 so_stateownerid;
- u32 so_fileid;
+ clientid_t so_clid;
+ u32 so_id;
} stateid_opaque_t;
typedef struct {
u32 si_generation;
stateid_opaque_t si_opaque;
} stateid_t;
-#define si_boot si_opaque.so_boot
-#define si_stateownerid si_opaque.so_stateownerid
-#define si_fileid si_opaque.so_fileid
#define STATEID_FMT "(%08x/%08x/%08x/%08x)"
#define STATEID_VAL(s) \
- (s)->si_boot, \
- (s)->si_stateownerid, \
- (s)->si_fileid, \
+ (s)->si_opaque.so_clid.cl_boot, \
+ (s)->si_opaque.so_clid.cl_id, \
+ (s)->si_opaque.so_id, \
(s)->si_generation
struct nfsd4_callback {
@@ -76,17 +73,27 @@ struct nfsd4_callback {
bool cb_done;
};
+struct nfs4_stid {
+#define NFS4_OPEN_STID 1
+#define NFS4_LOCK_STID 2
+#define NFS4_DELEG_STID 4
+/* For an open stateid kept around *only* to process close replays: */
+#define NFS4_CLOSED_STID 8
+ unsigned char sc_type;
+ stateid_t sc_stateid;
+ struct nfs4_client *sc_client;
+};
+
struct nfs4_delegation {
+ struct nfs4_stid dl_stid; /* must be first field */
struct list_head dl_perfile;
struct list_head dl_perclnt;
struct list_head dl_recall_lru; /* delegation recalled */
atomic_t dl_count; /* ref count */
- struct nfs4_client *dl_client;
struct nfs4_file *dl_file;
u32 dl_type;
time_t dl_time;
/* For recall: */
- stateid_t dl_stateid;
struct knfsd_fh dl_fh;
int dl_retries;
struct nfsd4_callback dl_recall;
@@ -104,6 +111,11 @@ struct nfs4_cb_conn {
struct svc_xprt *cb_xprt; /* minorversion 1 only */
};
+static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s)
+{
+ return container_of(s, struct nfs4_delegation, dl_stid);
+}
+
/* Maximum number of slots per session. 160 is useful for long haul TCP */
#define NFSD_MAX_SLOTS_PER_SESSION 160
/* Maximum number of operations per session compound */
@@ -220,6 +232,7 @@ struct nfs4_client {
struct list_head cl_idhash; /* hash by cl_clientid.id */
struct list_head cl_strhash; /* hash by cl_name */
struct list_head cl_openowners;
+ struct idr cl_stateids; /* stateid lookup */
struct list_head cl_delegations;
struct list_head cl_lru; /* tail queue */
struct xdr_netobj cl_name; /* id generated by client */
@@ -245,6 +258,7 @@ struct nfs4_client {
#define NFSD4_CB_UP 0
#define NFSD4_CB_UNKNOWN 1
#define NFSD4_CB_DOWN 2
+#define NFSD4_CB_FAULT 3
int cl_cb_state;
struct nfsd4_callback cl_cb_null;
struct nfsd4_session *cl_cb_session;
@@ -293,6 +307,9 @@ static inline void
update_stateid(stateid_t *stateid)
{
stateid->si_generation++;
+ /* Wraparound recommendation from 3530bis-13 9.1.3.2: */
+ if (stateid->si_generation == 0)
+ stateid->si_generation = 1;
}
/* A reasonable value for REPLAY_ISIZE was estimated as follows:
@@ -312,49 +329,57 @@ struct nfs4_replay {
__be32 rp_status;
unsigned int rp_buflen;
char *rp_buf;
- unsigned intrp_allocated;
struct knfsd_fh rp_openfh;
char rp_ibuf[NFSD4_REPLAY_ISIZE];
};
-/*
-* nfs4_stateowner can either be an open_owner, or a lock_owner
-*
-* so_idhash: stateid_hashtbl[] for open owner, lockstateid_hashtbl[]
-* for lock_owner
-* so_strhash: ownerstr_hashtbl[] for open_owner, lock_ownerstr_hashtbl[]
-* for lock_owner
-* so_perclient: nfs4_client->cl_perclient entry - used when nfs4_client
-* struct is reaped.
-* so_perfilestate: heads the list of nfs4_stateid (either open or lock)
-* and is used to ensure no dangling nfs4_stateid references when we
-* release a stateowner.
-* so_perlockowner: (open) nfs4_stateid->st_perlockowner entry - used when
-* close is called to reap associated byte-range locks
-* so_close_lru: (open) stateowner is placed on this list instead of being
-* reaped (when so_perfilestate is empty) to hold the last close replay.
-* reaped by laundramat thread after lease period.
-*/
struct nfs4_stateowner {
- struct kref so_ref;
- struct list_head so_idhash; /* hash by so_id */
struct list_head so_strhash; /* hash by op_name */
- struct list_head so_perclient;
struct list_head so_stateids;
- struct list_head so_perstateid; /* for lockowners only */
- struct list_head so_close_lru; /* tail queue */
- time_t so_time; /* time of placement on so_close_lru */
- int so_is_open_owner; /* 1=openowner,0=lockowner */
- u32 so_id;
struct nfs4_client * so_client;
/* after increment in ENCODE_SEQID_OP_TAIL, represents the next
* sequence id expected from the client: */
u32 so_seqid;
struct xdr_netobj so_owner; /* open owner name */
- int so_confirmed; /* successful OPEN_CONFIRM? */
struct nfs4_replay so_replay;
+ bool so_is_open_owner;
};
+struct nfs4_openowner {
+ struct nfs4_stateowner oo_owner; /* must be first field */
+ struct list_head oo_perclient;
+ /*
+ * We keep around openowners a little while after last close,
+ * which saves clients from having to confirm, and allows us to
+ * handle close replays if they come soon enough. The close_lru
+ * is a list of such openowners, to be reaped by the laundromat
+ * thread eventually if they remain unused:
+ */
+ struct list_head oo_close_lru;
+ struct nfs4_ol_stateid *oo_last_closed_stid;
+ time_t oo_time; /* time of placement on so_close_lru */
+#define NFS4_OO_CONFIRMED 1
+#define NFS4_OO_PURGE_CLOSE 2
+#define NFS4_OO_NEW 4
+ unsigned char oo_flags;
+};
+
+struct nfs4_lockowner {
+ struct nfs4_stateowner lo_owner; /* must be first element */
+ struct list_head lo_perstateid; /* for lockowners only */
+ struct list_head lo_list; /* for temporary uses */
+};
+
+static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so)
+{
+ return container_of(so, struct nfs4_openowner, oo_owner);
+}
+
+static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so)
+{
+ return container_of(so, struct nfs4_lockowner, lo_owner);
+}
+
/*
* nfs4_file: a file opened by some number of (open) nfs4_stateowners.
* o fi_perfile list is used to search for conflicting
@@ -368,17 +393,17 @@ struct nfs4_file {
/* One each for O_RDONLY, O_WRONLY, O_RDWR: */
struct file * fi_fds[3];
/*
- * Each open or lock stateid contributes 1 to either
- * fi_access[O_RDONLY], fi_access[O_WRONLY], or both, depending
- * on open or lock mode:
+ * Each open or lock stateid contributes 0-4 to the counts
+ * below depending on which bits are set in st_access_bitmap:
+ * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set
+ * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set
+ * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set.
*/
atomic_t fi_access[2];
struct file *fi_deleg_file;
struct file_lock *fi_lease;
atomic_t fi_delegees;
struct inode *fi_inode;
- u32 fi_id; /* used with stateowner->so_id
- * for stateid_hashtbl hash */
bool fi_had_conflict;
};
@@ -408,44 +433,27 @@ static inline struct file *find_any_file(struct nfs4_file *f)
return f->fi_fds[O_RDONLY];
}
-/*
-* nfs4_stateid can either be an open stateid or (eventually) a lock stateid
-*
-* (open)nfs4_stateid: one per (open)nfs4_stateowner, nfs4_file
-*
-* st_hash: stateid_hashtbl[] entry or lockstateid_hashtbl entry
-* st_perfile: file_hashtbl[] entry.
-* st_perfile_state: nfs4_stateowner->so_perfilestate
-* st_perlockowner: (open stateid) list of lock nfs4_stateowners
-* st_access_bmap: used only for open stateid
-* st_deny_bmap: used only for open stateid
-* st_openstp: open stateid lock stateid was derived from
-*
-* XXX: open stateids and lock stateids have diverged sufficiently that
-* we should consider defining separate structs for the two cases.
-*/
-
-struct nfs4_stateid {
- struct list_head st_hash;
+/* "ol" stands for "Open or Lock". Better suggestions welcome. */
+struct nfs4_ol_stateid {
+ struct nfs4_stid st_stid; /* must be first field */
struct list_head st_perfile;
struct list_head st_perstateowner;
struct list_head st_lockowners;
struct nfs4_stateowner * st_stateowner;
struct nfs4_file * st_file;
- stateid_t st_stateid;
unsigned long st_access_bmap;
unsigned long st_deny_bmap;
- struct nfs4_stateid * st_openstp;
+ struct nfs4_ol_stateid * st_openstp;
};
+static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s)
+{
+ return container_of(s, struct nfs4_ol_stateid, st_stid);
+}
+
/* flags for preprocess_seqid_op() */
-#define HAS_SESSION 0x00000001
-#define CONFIRM 0x00000002
-#define OPEN_STATE 0x00000004
-#define LOCK_STATE 0x00000008
#define RD_STATE 0x00000010
#define WR_STATE 0x00000020
-#define CLOSE_STATE 0x00000040
struct nfsd4_compound_state;
@@ -455,7 +463,8 @@ extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfs4_in_grace(void);
extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
-extern void nfs4_free_stateowner(struct kref *kref);
+extern void nfs4_free_openowner(struct nfs4_openowner *);
+extern void nfs4_free_lockowner(struct nfs4_lockowner *);
extern int set_callback_cred(void);
extern void nfsd4_probe_callback(struct nfs4_client *clp);
extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);
@@ -467,7 +476,7 @@ extern void nfsd4_destroy_callback_queue(void);
extern void nfsd4_shutdown_callback(struct nfs4_client *);
extern void nfs4_put_delegation(struct nfs4_delegation *dp);
extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname);
-extern void nfsd4_init_recdir(char *recdir_name);
+extern void nfsd4_init_recdir(void);
extern int nfsd4_recdir_load(void);
extern void nfsd4_shutdown_recdir(void);
extern int nfs4_client_to_reclaim(const char *name);
@@ -476,17 +485,7 @@ extern void nfsd4_recdir_purge_old(void);
extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
extern void release_session_client(struct nfsd4_session *);
-
-static inline void
-nfs4_put_stateowner(struct nfs4_stateowner *so)
-{
- kref_put(&so->so_ref, nfs4_free_stateowner);
-}
-
-static inline void
-nfs4_get_stateowner(struct nfs4_stateowner *so)
-{
- kref_get(&so->so_ref);
-}
+extern __be32 nfs4_validate_stateid(struct nfs4_client *, stateid_t *);
+extern void nfsd4_purge_closed_stateid(struct nfs4_stateowner *);
#endif /* NFSD4_STATE_H */
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index acf88ae..e2e7914 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -168,6 +168,8 @@ int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp)
{
if (d_mountpoint(dentry))
return 1;
+ if (nfsd4_is_junction(dentry))
+ return 1;
if (!(exp->ex_flags & NFSEXP_V4ROOT))
return 0;
return dentry->d_inode != NULL;
@@ -295,41 +297,12 @@ commit_metadata(struct svc_fh *fhp)
}
/*
- * Set various file attributes.
- * N.B. After this call fhp needs an fh_put
+ * Go over the attributes and take care of the small differences between
+ * NFS semantics and what Linux expects.
*/
-__be32
-nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
- int check_guard, time_t guardtime)
+static void
+nfsd_sanitize_attrs(struct inode *inode, struct iattr *iap)
{
- struct dentry *dentry;
- struct inode *inode;
- int accmode = NFSD_MAY_SATTR;
- int ftype = 0;
- __be32 err;
- int host_err;
- int size_change = 0;
-
- if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE))
- accmode |= NFSD_MAY_WRITE|NFSD_MAY_OWNER_OVERRIDE;
- if (iap->ia_valid & ATTR_SIZE)
- ftype = S_IFREG;
-
- /* Get inode */
- err = fh_verify(rqstp, fhp, ftype, accmode);
- if (err)
- goto out;
-
- dentry = fhp->fh_dentry;
- inode = dentry->d_inode;
-
- /* Ignore any mode updates on symlinks */
- if (S_ISLNK(inode->i_mode))
- iap->ia_valid &= ~ATTR_MODE;
-
- if (!iap->ia_valid)
- goto out;
-
/*
* NFSv2 does not differentiate between "set-[ac]time-to-now"
* which only requires access, and "set-[ac]time-to-X" which
@@ -339,8 +312,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
* convert to "set to now" instead of "set to explicit time"
*
* We only call inode_change_ok as the last test as technically
- * it is not an interface that we should be using. It is only
- * valid if the filesystem does not define it's own i_op->setattr.
+ * it is not an interface that we should be using.
*/
#define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
#define MAX_TOUCH_TIME_ERROR (30*60)
@@ -366,30 +338,6 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
iap->ia_valid &= ~BOTH_TIME_SET;
}
}
-
- /*
- * The size case is special.
- * It changes the file as well as the attributes.
- */
- if (iap->ia_valid & ATTR_SIZE) {
- if (iap->ia_size < inode->i_size) {
- err = nfsd_permission(rqstp, fhp->fh_export, dentry,
- NFSD_MAY_TRUNC|NFSD_MAY_OWNER_OVERRIDE);
- if (err)
- goto out;
- }
-
- host_err = get_write_access(inode);
- if (host_err)
- goto out_nfserr;
-
- size_change = 1;
- host_err = locks_verify_truncate(inode, NULL, iap->ia_size);
- if (host_err) {
- put_write_access(inode);
- goto out_nfserr;
- }
- }
/* sanitize the mode change */
if (iap->ia_valid & ATTR_MODE) {
@@ -412,32 +360,120 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
iap->ia_valid |= (ATTR_KILL_SUID | ATTR_KILL_SGID);
}
}
+}
- /* Change the attributes. */
+static __be32
+nfsd_get_write_access(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct iattr *iap)
+{
+ struct inode *inode = fhp->fh_dentry->d_inode;
+ int host_err;
- iap->ia_valid |= ATTR_CTIME;
+ if (iap->ia_size < inode->i_size) {
+ __be32 err;
+
+ err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry,
+ NFSD_MAY_TRUNC | NFSD_MAY_OWNER_OVERRIDE);
+ if (err)
+ return err;
+ }
+
+ host_err = get_write_access(inode);
+ if (host_err)
+ goto out_nfserrno;
+
+ host_err = locks_verify_truncate(inode, NULL, iap->ia_size);
+ if (host_err)
+ goto out_put_write_access;
+ return 0;
+
+out_put_write_access:
+ put_write_access(inode);
+out_nfserrno:
+ return nfserrno(host_err);
+}
+
+/*
+ * Set various file attributes. After this call fhp needs an fh_put.
+ */
+__be32
+nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
+ int check_guard, time_t guardtime)
+{
+ struct dentry *dentry;
+ struct inode *inode;
+ int accmode = NFSD_MAY_SATTR;
+ int ftype = 0;
+ __be32 err;
+ int host_err;
+ bool get_write_count;
+ int size_change = 0;
- err = nfserr_notsync;
- if (!check_guard || guardtime == inode->i_ctime.tv_sec) {
- host_err = nfsd_break_lease(inode);
+ if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE))
+ accmode |= NFSD_MAY_WRITE|NFSD_MAY_OWNER_OVERRIDE;
+ if (iap->ia_valid & ATTR_SIZE)
+ ftype = S_IFREG;
+
+ /* Callers that do fh_verify should do the fh_want_write: */
+ get_write_count = !fhp->fh_dentry;
+
+ /* Get inode */
+ err = fh_verify(rqstp, fhp, ftype, accmode);
+ if (err)
+ goto out;
+ if (get_write_count) {
+ host_err = fh_want_write(fhp);
if (host_err)
- goto out_nfserr;
- fh_lock(fhp);
+ return nfserrno(host_err);
+ }
- host_err = notify_change(dentry, iap);
- err = nfserrno(host_err);
- fh_unlock(fhp);
+ dentry = fhp->fh_dentry;
+ inode = dentry->d_inode;
+
+ /* Ignore any mode updates on symlinks */
+ if (S_ISLNK(inode->i_mode))
+ iap->ia_valid &= ~ATTR_MODE;
+
+ if (!iap->ia_valid)
+ goto out;
+
+ nfsd_sanitize_attrs(inode, iap);
+
+ /*
+ * The size case is special, it changes the file in addition to the
+ * attributes.
+ */
+ if (iap->ia_valid & ATTR_SIZE) {
+ err = nfsd_get_write_access(rqstp, fhp, iap);
+ if (err)
+ goto out;
+ size_change = 1;
}
+
+ iap->ia_valid |= ATTR_CTIME;
+
+ if (check_guard && guardtime != inode->i_ctime.tv_sec) {
+ err = nfserr_notsync;
+ goto out_put_write_access;
+ }
+
+ host_err = nfsd_break_lease(inode);
+ if (host_err)
+ goto out_put_write_access_nfserror;
+
+ fh_lock(fhp);
+ host_err = notify_change(dentry, iap);
+ fh_unlock(fhp);
+
+out_put_write_access_nfserror:
+ err = nfserrno(host_err);
+out_put_write_access:
if (size_change)
put_write_access(inode);
if (!err)
commit_metadata(fhp);
out:
return err;
-
-out_nfserr:
- err = nfserrno(host_err);
- goto out;
}
#if defined(CONFIG_NFSD_V2_ACL) || \
@@ -472,6 +508,9 @@ set_nfsv4_acl_one(struct dentry *dentry, struct posix_acl *pacl, char *key)
char *buf = NULL;
int error = 0;
+ if (!pacl)
+ return vfs_setxattr(dentry, key, NULL, 0, 0);
+
buflen = posix_acl_xattr_size(pacl->a_count);
buf = kmalloc(buflen, GFP_KERNEL);
error = -ENOMEM;
@@ -502,7 +541,7 @@ nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
unsigned int flags = 0;
/* Get inode */
- error = fh_verify(rqstp, fhp, 0 /* S_IFREG */, NFSD_MAY_SATTR);
+ error = fh_verify(rqstp, fhp, 0, NFSD_MAY_SATTR);
if (error)
return error;
@@ -592,6 +631,22 @@ nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, struct nfs4_ac
return error;
}
+#define NFSD_XATTR_JUNCTION_PREFIX XATTR_TRUSTED_PREFIX "junction."
+#define NFSD_XATTR_JUNCTION_TYPE NFSD_XATTR_JUNCTION_PREFIX "type"
+int nfsd4_is_junction(struct dentry *dentry)
+{
+ struct inode *inode = dentry->d_inode;
+
+ if (inode == NULL)
+ return 0;
+ if (inode->i_mode & S_IXUGO)
+ return 0;
+ if (!(inode->i_mode & S_ISVTX))
+ return 0;
+ if (vfs_getxattr(dentry, NFSD_XATTR_JUNCTION_TYPE, NULL, 0) <= 0)
+ return 0;
+ return 1;
+}
#endif /* defined(CONFIG_NFSD_V4) */
#ifdef CONFIG_NFSD_V3
@@ -708,12 +763,13 @@ static int nfsd_open_break_lease(struct inode *inode, int access)
/*
* Open an existing file or directory.
- * The access argument indicates the type of open (read/write/lock)
+ * The may_flags argument indicates the type of open (read/write/lock)
+ * and additional flags.
* N.B. After this call fhp needs an fh_put
*/
__be32
nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
- int access, struct file **filp)
+ int may_flags, struct file **filp)
{
struct dentry *dentry;
struct inode *inode;
@@ -728,7 +784,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
* and (hopefully) checked permission - so allow OWNER_OVERRIDE
* in case a chmod has now revoked permission.
*/
- err = fh_verify(rqstp, fhp, type, access | NFSD_MAY_OWNER_OVERRIDE);
+ err = fh_verify(rqstp, fhp, type, may_flags | NFSD_MAY_OWNER_OVERRIDE);
if (err)
goto out;
@@ -739,7 +795,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
* or any access when mandatory locking enabled
*/
err = nfserr_perm;
- if (IS_APPEND(inode) && (access & NFSD_MAY_WRITE))
+ if (IS_APPEND(inode) && (may_flags & NFSD_MAY_WRITE))
goto out;
/*
* We must ignore files (but only files) which might have mandatory
@@ -752,22 +808,30 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
if (!inode->i_fop)
goto out;
- host_err = nfsd_open_break_lease(inode, access);
+ host_err = nfsd_open_break_lease(inode, may_flags);
if (host_err) /* NOMEM or WOULDBLOCK */
goto out_nfserr;
- if (access & NFSD_MAY_WRITE) {
- if (access & NFSD_MAY_READ)
+ if (may_flags & NFSD_MAY_WRITE) {
+ if (may_flags & NFSD_MAY_READ)
flags = O_RDWR|O_LARGEFILE;
else
flags = O_WRONLY|O_LARGEFILE;
}
*filp = dentry_open(dget(dentry), mntget(fhp->fh_export->ex_path.mnt),
flags, current_cred());
- if (IS_ERR(*filp))
+ if (IS_ERR(*filp)) {
host_err = PTR_ERR(*filp);
- else
- host_err = ima_file_check(*filp, access);
+ *filp = NULL;
+ } else {
+ host_err = ima_file_check(*filp, may_flags);
+
+ if (may_flags & NFSD_MAY_64BIT_COOKIE)
+ (*filp)->f_mode |= FMODE_64BITHASH;
+ else
+ (*filp)->f_mode |= FMODE_32BITHASH;
+ }
+
out_nfserr:
err = nfserrno(host_err);
out:
@@ -1352,7 +1416,7 @@ __be32
do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
char *fname, int flen, struct iattr *iap,
struct svc_fh *resfhp, int createmode, u32 *verifier,
- int *truncp, int *created)
+ bool *truncp, bool *created)
{
struct dentry *dentry, *dchild = NULL;
struct inode *dirp;
@@ -1421,7 +1485,7 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
switch (createmode) {
case NFS3_CREATE_UNCHECKED:
if (! S_ISREG(dchild->d_inode->i_mode))
- err = nfserr_exist;
+ goto out;
else if (truncp) {
/* in nfsv4, we need to treat this case a little
* differently. we don't want to truncate the
@@ -1440,13 +1504,19 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
case NFS3_CREATE_EXCLUSIVE:
if ( dchild->d_inode->i_mtime.tv_sec == v_mtime
&& dchild->d_inode->i_atime.tv_sec == v_atime
- && dchild->d_inode->i_size == 0 )
+ && dchild->d_inode->i_size == 0 ) {
+ if (created)
+ *created = 1;
break;
+ }
case NFS4_CREATE_EXCLUSIVE4_1:
if ( dchild->d_inode->i_mtime.tv_sec == v_mtime
&& dchild->d_inode->i_atime.tv_sec == v_atime
- && dchild->d_inode->i_size == 0 )
+ && dchild->d_inode->i_size == 0 ) {
+ if (created)
+ *created = 1;
goto set_attr;
+ }
/* fallthru */
case NFS3_CREATE_GUARDED:
err = nfserr_exist;
@@ -1632,10 +1702,12 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
err = fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_CREATE);
if (err)
goto out;
- err = fh_verify(rqstp, tfhp, -S_IFDIR, NFSD_MAY_NOP);
+ err = fh_verify(rqstp, tfhp, 0, NFSD_MAY_NOP);
if (err)
goto out;
-
+ err = nfserr_isdir;
+ if (S_ISDIR(tfhp->fh_dentry->d_inode->i_mode))
+ goto out;
err = nfserr_perm;
if (!len)
goto out;
@@ -1989,8 +2061,13 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
__be32 err;
struct file *file;
loff_t offset = *offsetp;
+ int may_flags = NFSD_MAY_READ;
+
+ /* NFSv2 only supports 32 bit cookies */
+ if (rqstp->rq_vers > 2)
+ may_flags |= NFSD_MAY_64BIT_COOKIE;
- err = nfsd_open(rqstp, fhp, S_IFDIR, NFSD_MAY_READ, &file);
+ err = nfsd_open(rqstp, fhp, S_IFDIR, may_flags, &file);
if (err)
goto out;
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index a22e40e..c7fe962 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -10,22 +10,24 @@
/*
* Flags for nfsd_permission
*/
-#define NFSD_MAY_NOP 0
-#define NFSD_MAY_EXEC 1 /* == MAY_EXEC */
-#define NFSD_MAY_WRITE 2 /* == MAY_WRITE */
-#define NFSD_MAY_READ 4 /* == MAY_READ */
-#define NFSD_MAY_SATTR 8
-#define NFSD_MAY_TRUNC 16
-#define NFSD_MAY_LOCK 32
-#define NFSD_MAY_MASK 63
+#define NFSD_MAY_NOP 0
+#define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */
+#define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */
+#define NFSD_MAY_READ 0x004 /* == MAY_READ */
+#define NFSD_MAY_SATTR 0x008
+#define NFSD_MAY_TRUNC 0x010
+#define NFSD_MAY_LOCK 0x020
+#define NFSD_MAY_MASK 0x03f
/* extra hints to permission and open routines: */
-#define NFSD_MAY_OWNER_OVERRIDE 64
-#define NFSD_MAY_LOCAL_ACCESS 128 /* IRIX doing local access check on device special file*/
-#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256
-#define NFSD_MAY_NOT_BREAK_LEASE 512
-#define NFSD_MAY_BYPASS_GSS 1024
-#define NFSD_MAY_READ_IF_EXEC 2048
+#define NFSD_MAY_OWNER_OVERRIDE 0x040
+#define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */
+#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100
+#define NFSD_MAY_NOT_BREAK_LEASE 0x200
+#define NFSD_MAY_BYPASS_GSS 0x400
+#define NFSD_MAY_READ_IF_EXEC 0x800
+
+#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
@@ -62,7 +64,7 @@ __be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
char *name, int len, struct iattr *attrs,
struct svc_fh *res, int createmode,
- u32 *verifier, int *truncp, int *created);
+ u32 *verifier, bool *truncp, bool *created);
__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
loff_t, unsigned long);
#endif /* CONFIG_NFSD_V3 */
@@ -106,4 +108,14 @@ struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int);
int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *);
#endif
+static inline int fh_want_write(struct svc_fh *fh)
+{
+ return mnt_want_write(fh->fh_export->ex_path.mnt);
+}
+
+static inline void fh_drop_write(struct svc_fh *fh)
+{
+ mnt_drop_write(fh->fh_export->ex_path.mnt);
+}
+
#endif /* LINUX_NFSD_VFS_H */
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 366401e..2364747 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -81,7 +81,6 @@ struct nfsd4_access {
struct nfsd4_close {
u32 cl_seqid; /* request */
stateid_t cl_stateid; /* request+response */
- struct nfs4_stateowner * cl_stateowner; /* response */
};
struct nfsd4_commit {
@@ -131,7 +130,7 @@ struct nfsd4_link {
struct nfsd4_lock_denied {
clientid_t ld_clientid;
- struct nfs4_stateowner *ld_sop;
+ struct xdr_netobj ld_owner;
u64 ld_start;
u64 ld_length;
u32 ld_type;
@@ -165,9 +164,6 @@ struct nfsd4_lock {
} ok;
struct nfsd4_lock_denied denied;
} u;
- /* The lk_replay_owner is the open owner in the open_to_lock_owner
- * case and the lock owner otherwise: */
- struct nfs4_stateowner *lk_replay_owner;
};
#define lk_new_open_seqid v.new.open_seqid
#define lk_new_open_stateid v.new.open_stateid
@@ -188,7 +184,6 @@ struct nfsd4_lockt {
struct xdr_netobj lt_owner;
u64 lt_offset;
u64 lt_length;
- struct nfs4_stateowner * lt_stateowner;
struct nfsd4_lock_denied lt_denied;
};
@@ -199,7 +194,6 @@ struct nfsd4_locku {
stateid_t lu_stateid;
u64 lu_offset;
u64 lu_length;
- struct nfs4_stateowner *lu_stateowner;
};
@@ -232,8 +226,11 @@ struct nfsd4_open {
u32 op_recall; /* recall */
struct nfsd4_change_info op_cinfo; /* response */
u32 op_rflags; /* response */
- int op_truncate; /* used during processing */
- struct nfs4_stateowner *op_stateowner; /* used during processing */
+ bool op_truncate; /* used during processing */
+ bool op_created; /* used during processing */
+ struct nfs4_openowner *op_openowner; /* used during processing */
+ struct nfs4_file *op_file; /* used during processing */
+ struct nfs4_ol_stateid *op_stp; /* used during processing */
struct nfs4_acl *op_acl;
};
#define op_iattr iattr
@@ -243,7 +240,6 @@ struct nfsd4_open_confirm {
stateid_t oc_req_stateid /* request */;
u32 oc_seqid /* request */;
stateid_t oc_resp_stateid /* response */;
- struct nfs4_stateowner * oc_stateowner; /* response */
};
struct nfsd4_open_downgrade {
@@ -251,7 +247,6 @@ struct nfsd4_open_downgrade {
u32 od_seqid;
u32 od_share_access;
u32 od_share_deny;
- struct nfs4_stateowner *od_stateowner;
};
@@ -325,8 +320,7 @@ struct nfsd4_setattr {
struct nfsd4_setclientid {
nfs4_verifier se_verf; /* request */
- u32 se_namelen; /* request */
- char * se_name; /* request */
+ struct xdr_netobj se_name;
u32 se_callback_prog; /* request */
u32 se_callback_netid_len; /* request */
char * se_callback_netid_val; /* request */
@@ -342,6 +336,24 @@ struct nfsd4_setclientid_confirm {
nfs4_verifier sc_confirm;
};
+struct nfsd4_saved_compoundargs {
+ __be32 *p;
+ __be32 *end;
+ int pagelen;
+ struct page **pagelist;
+};
+
+struct nfsd4_test_stateid {
+ __be32 ts_num_ids;
+ struct nfsd4_compoundargs *ts_saved_args;
+ struct nfsd4_saved_compoundargs ts_savedp;
+};
+
+struct nfsd4_free_stateid {
+ stateid_t fr_stateid; /* request */
+ __be32 fr_status; /* response */
+};
+
/* also used for NVERIFY */
struct nfsd4_verify {
u32 ve_bmval[3]; /* request */
@@ -386,6 +398,10 @@ struct nfsd4_destroy_session {
struct nfs4_sessionid sessionid;
};
+struct nfsd4_destroy_clientid {
+ clientid_t clientid;
+};
+
struct nfsd4_reclaim_complete {
u32 rca_one_fs;
};
@@ -432,10 +448,14 @@ struct nfsd4_op {
struct nfsd4_destroy_session destroy_session;
struct nfsd4_sequence sequence;
struct nfsd4_reclaim_complete reclaim_complete;
+ struct nfsd4_test_stateid test_stateid;
+ struct nfsd4_free_stateid free_stateid;
} u;
struct nfs4_replay * replay;
};
+bool nfsd4_cache_this_op(struct nfsd4_op *);
+
struct nfsd4_compoundargs {
/* scratch variables for XDR decode */
__be32 * p;
@@ -458,6 +478,7 @@ struct nfsd4_compoundargs {
u32 opcnt;
struct nfsd4_op *ops;
struct nfsd4_op iops[8];
+ int cachetype;
};
struct nfsd4_compoundres {
@@ -508,6 +529,7 @@ int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
struct nfsd4_compoundargs *);
int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
struct nfsd4_compoundres *);
+int nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
__be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
@@ -534,11 +556,13 @@ extern __be32 nfsd4_sequence(struct svc_rqst *,
extern __be32 nfsd4_destroy_session(struct svc_rqst *,
struct nfsd4_compound_state *,
struct nfsd4_destroy_session *);
+extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
struct nfsd4_open *open);
extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
struct svc_fh *current_fh, struct nfsd4_open *open);
+extern void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status);
extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
extern __be32 nfsd4_close(struct svc_rqst *rqstp,
@@ -559,11 +583,15 @@ extern __be32
nfsd4_release_lockowner(struct svc_rqst *rqstp,
struct nfsd4_compound_state *,
struct nfsd4_release_lockowner *rlockowner);
-extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
+extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, clientid_t *clid);
+extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
+extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
#endif
/*
generated by cgit v1.1 at 2024-04-29 11:35:42 +0000