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-rw-r--r--fs/xfs/Kconfig1
-rw-r--r--fs/xfs/Makefile2
-rw-r--r--fs/xfs/linux-2.6/xfs_acl.c523
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl.c1
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c53
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.c1
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c14
-rw-r--r--fs/xfs/linux-2.6/xfs_xattr.c67
-rw-r--r--fs/xfs/quota/xfs_dquot.c1
-rw-r--r--fs/xfs/quota/xfs_dquot_item.c1
-rw-r--r--fs/xfs/quota/xfs_qm.c1
-rw-r--r--fs/xfs/quota/xfs_qm_bhv.c1
-rw-r--r--fs/xfs/quota/xfs_qm_stats.c1
-rw-r--r--fs/xfs/quota/xfs_qm_syscalls.c1
-rw-r--r--fs/xfs/quota/xfs_trans_dquot.c1
-rw-r--r--fs/xfs/xfs_acl.c874
-rw-r--r--fs/xfs/xfs_acl.h97
-rw-r--r--fs/xfs/xfs_arch.h32
-rw-r--r--fs/xfs/xfs_attr.c1
-rw-r--r--fs/xfs/xfs_iget.c3
-rw-r--r--fs/xfs/xfs_inode.c1
-rw-r--r--fs/xfs/xfs_inode.h6
-rw-r--r--fs/xfs/xfs_iomap.c1
-rw-r--r--fs/xfs/xfs_rw.c1
-rw-r--r--fs/xfs/xfs_vnodeops.c15
-rw-r--r--fs/xfs/xfs_vnodeops.h1
26 files changed, 598 insertions, 1103 deletions
diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
index 29228f5..480f281 100644
--- a/fs/xfs/Kconfig
+++ b/fs/xfs/Kconfig
@@ -39,6 +39,7 @@ config XFS_QUOTA
config XFS_POSIX_ACL
bool "XFS POSIX ACL support"
depends on XFS_FS
+ select FS_POSIX_ACL
help
POSIX Access Control Lists (ACLs) support permissions for users and
groups beyond the owner/group/world scheme.
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index 222c59e..7a59dae 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -40,7 +40,7 @@ xfs-$(CONFIG_PROC_FS) += quota/xfs_qm_stats.o
endif
xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o
-xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
+xfs-$(CONFIG_XFS_POSIX_ACL) += $(XFS_LINUX)/xfs_acl.o
xfs-$(CONFIG_PROC_FS) += $(XFS_LINUX)/xfs_stats.o
xfs-$(CONFIG_SYSCTL) += $(XFS_LINUX)/xfs_sysctl.o
xfs-$(CONFIG_COMPAT) += $(XFS_LINUX)/xfs_ioctl32.o
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c
new file mode 100644
index 0000000..1e9d124
--- /dev/null
+++ b/fs/xfs/linux-2.6/xfs_acl.c
@@ -0,0 +1,523 @@
+/*
+ * Copyright (c) 2008, Christoph Hellwig
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "xfs.h"
+#include "xfs_acl.h"
+#include "xfs_attr.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_inode.h"
+#include "xfs_vnodeops.h"
+#include <linux/xattr.h>
+#include <linux/posix_acl_xattr.h>
+
+
+#define XFS_ACL_NOT_CACHED ((void *)-1)
+
+/*
+ * Locking scheme:
+ * - all ACL updates are protected by inode->i_mutex, which is taken before
+ * calling into this file.
+ * - access and updates to the ip->i_acl and ip->i_default_acl pointers are
+ * protected by inode->i_lock.
+ */
+
+STATIC struct posix_acl *
+xfs_acl_from_disk(struct xfs_acl *aclp)
+{
+ struct posix_acl_entry *acl_e;
+ struct posix_acl *acl;
+ struct xfs_acl_entry *ace;
+ int count, i;
+
+ count = be32_to_cpu(aclp->acl_cnt);
+
+ acl = posix_acl_alloc(count, GFP_KERNEL);
+ if (!acl)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < count; i++) {
+ acl_e = &acl->a_entries[i];
+ ace = &aclp->acl_entry[i];
+
+ /*
+ * The tag is 32 bits on disk and 16 bits in core.
+ *
+ * Because every access to it goes through the core
+ * format first this is not a problem.
+ */
+ acl_e->e_tag = be32_to_cpu(ace->ae_tag);
+ acl_e->e_perm = be16_to_cpu(ace->ae_perm);
+
+ switch (acl_e->e_tag) {
+ case ACL_USER:
+ case ACL_GROUP:
+ acl_e->e_id = be32_to_cpu(ace->ae_id);
+ break;
+ case ACL_USER_OBJ:
+ case ACL_GROUP_OBJ:
+ case ACL_MASK:
+ case ACL_OTHER:
+ acl_e->e_id = ACL_UNDEFINED_ID;
+ break;
+ default:
+ goto fail;
+ }
+ }
+ return acl;
+
+fail:
+ posix_acl_release(acl);
+ return ERR_PTR(-EINVAL);
+}
+
+STATIC void
+xfs_acl_to_disk(struct xfs_acl *aclp, const struct posix_acl *acl)
+{
+ const struct posix_acl_entry *acl_e;
+ struct xfs_acl_entry *ace;
+ int i;
+
+ aclp->acl_cnt = cpu_to_be32(acl->a_count);
+ for (i = 0; i < acl->a_count; i++) {
+ ace = &aclp->acl_entry[i];
+ acl_e = &acl->a_entries[i];
+
+ ace->ae_tag = cpu_to_be32(acl_e->e_tag);
+ ace->ae_id = cpu_to_be32(acl_e->e_id);
+ ace->ae_perm = cpu_to_be16(acl_e->e_perm);
+ }
+}
+
+/*
+ * Update the cached ACL pointer in the inode.
+ *
+ * Because we don't hold any locks while reading/writing the attribute
+ * from/to disk another thread could have raced and updated the cached
+ * ACL value before us. In that case we release the previous cached value
+ * and update it with our new value.
+ */
+STATIC void
+xfs_update_cached_acl(struct inode *inode, struct posix_acl **p_acl,
+ struct posix_acl *acl)
+{
+ spin_lock(&inode->i_lock);
+ if (*p_acl && *p_acl != XFS_ACL_NOT_CACHED)
+ posix_acl_release(*p_acl);
+ *p_acl = posix_acl_dup(acl);
+ spin_unlock(&inode->i_lock);
+}
+
+struct posix_acl *
+xfs_get_acl(struct inode *inode, int type)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ struct posix_acl *acl = NULL, **p_acl;
+ struct xfs_acl *xfs_acl;
+ int len = sizeof(struct xfs_acl);
+ char *ea_name;
+ int error;
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ ea_name = SGI_ACL_FILE;
+ p_acl = &ip->i_acl;
+ break;
+ case ACL_TYPE_DEFAULT:
+ ea_name = SGI_ACL_DEFAULT;
+ p_acl = &ip->i_default_acl;
+ break;
+ default:
+ return ERR_PTR(-EINVAL);
+ }
+
+ spin_lock(&inode->i_lock);
+ if (*p_acl != XFS_ACL_NOT_CACHED)
+ acl = posix_acl_dup(*p_acl);
+ spin_unlock(&inode->i_lock);
+
+ /*
+ * If we have a cached ACLs value just return it, not need to
+ * go out to the disk.
+ */
+ if (acl)
+ return acl;
+
+ xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL);
+ if (!xfs_acl)
+ return ERR_PTR(-ENOMEM);
+
+ error = -xfs_attr_get(ip, ea_name, (char *)xfs_acl, &len, ATTR_ROOT);
+ if (error) {
+ /*
+ * If the attribute doesn't exist make sure we have a negative
+ * cache entry, for any other error assume it is transient and
+ * leave the cache entry as XFS_ACL_NOT_CACHED.
+ */
+ if (error == -ENOATTR) {
+ acl = NULL;
+ goto out_update_cache;
+ }
+ goto out;
+ }
+
+ acl = xfs_acl_from_disk(xfs_acl);
+ if (IS_ERR(acl))
+ goto out;
+
+ out_update_cache:
+ xfs_update_cached_acl(inode, p_acl, acl);
+ out:
+ kfree(xfs_acl);
+ return acl;
+}
+
+STATIC int
+xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ struct posix_acl **p_acl;
+ char *ea_name;
+ int error;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ ea_name = SGI_ACL_FILE;
+ p_acl = &ip->i_acl;
+ break;
+ case ACL_TYPE_DEFAULT:
+ if (!S_ISDIR(inode->i_mode))
+ return acl ? -EACCES : 0;
+ ea_name = SGI_ACL_DEFAULT;
+ p_acl = &ip->i_default_acl;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (acl) {
+ struct xfs_acl *xfs_acl;
+ int len;
+
+ xfs_acl = kzalloc(sizeof(struct xfs_acl), GFP_KERNEL);
+ if (!xfs_acl)
+ return -ENOMEM;
+
+ xfs_acl_to_disk(xfs_acl, acl);
+ len = sizeof(struct xfs_acl) -
+ (sizeof(struct xfs_acl_entry) *
+ (XFS_ACL_MAX_ENTRIES - acl->a_count));
+
+ error = -xfs_attr_set(ip, ea_name, (char *)xfs_acl,
+ len, ATTR_ROOT);
+
+ kfree(xfs_acl);
+ } else {
+ /*
+ * A NULL ACL argument means we want to remove the ACL.
+ */
+ error = -xfs_attr_remove(ip, ea_name, ATTR_ROOT);
+
+ /*
+ * If the attribute didn't exist to start with that's fine.
+ */
+ if (error == -ENOATTR)
+ error = 0;
+ }
+
+ if (!error)
+ xfs_update_cached_acl(inode, p_acl, acl);
+ return error;
+}
+
+int
+xfs_check_acl(struct inode *inode, int mask)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ struct posix_acl *acl;
+ int error = -EAGAIN;
+
+ xfs_itrace_entry(ip);
+
+ /*
+ * If there is no attribute fork no ACL exists on this inode and
+ * we can skip the whole exercise.
+ */
+ if (!XFS_IFORK_Q(ip))
+ return -EAGAIN;
+
+ acl = xfs_get_acl(inode, ACL_TYPE_ACCESS);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ if (acl) {
+ error = posix_acl_permission(inode, acl, mask);
+ posix_acl_release(acl);
+ }
+
+ return error;
+}
+
+static int
+xfs_set_mode(struct inode *inode, mode_t mode)
+{
+ int error = 0;
+
+ if (mode != inode->i_mode) {
+ struct iattr iattr;
+
+ iattr.ia_valid = ATTR_MODE;
+ iattr.ia_mode = mode;
+
+ error = -xfs_setattr(XFS_I(inode), &iattr, XFS_ATTR_NOACL);
+ }
+
+ return error;
+}
+
+static int
+xfs_acl_exists(struct inode *inode, char *name)
+{
+ int len = sizeof(struct xfs_acl);
+
+ return (xfs_attr_get(XFS_I(inode), name, NULL, &len,
+ ATTR_ROOT|ATTR_KERNOVAL) == 0);
+}
+
+int
+posix_acl_access_exists(struct inode *inode)
+{
+ return xfs_acl_exists(inode, SGI_ACL_FILE);
+}
+
+int
+posix_acl_default_exists(struct inode *inode)
+{
+ if (!S_ISDIR(inode->i_mode))
+ return 0;
+ return xfs_acl_exists(inode, SGI_ACL_DEFAULT);
+}
+
+/*
+ * No need for i_mutex because the inode is not yet exposed to the VFS.
+ */
+int
+xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl)
+{
+ struct posix_acl *clone;
+ mode_t mode;
+ int error = 0, inherit = 0;
+
+ if (S_ISDIR(inode->i_mode)) {
+ error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl);
+ if (error)
+ return error;
+ }
+
+ clone = posix_acl_clone(default_acl, GFP_KERNEL);
+ if (!clone)
+ return -ENOMEM;
+
+ mode = inode->i_mode;
+ error = posix_acl_create_masq(clone, &mode);
+ if (error < 0)
+ goto out_release_clone;
+
+ /*
+ * If posix_acl_create_masq returns a positive value we need to
+ * inherit a permission that can't be represented using the Unix
+ * mode bits and we actually need to set an ACL.
+ */
+ if (error > 0)
+ inherit = 1;
+
+ error = xfs_set_mode(inode, mode);
+ if (error)
+ goto out_release_clone;
+
+ if (inherit)
+ error = xfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
+
+ out_release_clone:
+ posix_acl_release(clone);
+ return error;
+}
+
+int
+xfs_acl_chmod(struct inode *inode)
+{
+ struct posix_acl *acl, *clone;
+ int error;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ acl = xfs_get_acl(inode, ACL_TYPE_ACCESS);
+ if (IS_ERR(acl) || !acl)
+ return PTR_ERR(acl);
+
+ clone = posix_acl_clone(acl, GFP_KERNEL);
+ posix_acl_release(acl);
+ if (!clone)
+ return -ENOMEM;
+
+ error = posix_acl_chmod_masq(clone, inode->i_mode);
+ if (!error)
+ error = xfs_set_acl(inode, ACL_TYPE_ACCESS, clone);
+
+ posix_acl_release(clone);
+ return error;
+}
+
+void
+xfs_inode_init_acls(struct xfs_inode *ip)
+{
+ /*
+ * No need for locking, inode is not live yet.
+ */
+ ip->i_acl = XFS_ACL_NOT_CACHED;
+ ip->i_default_acl = XFS_ACL_NOT_CACHED;
+}
+
+void
+xfs_inode_clear_acls(struct xfs_inode *ip)
+{
+ /*
+ * No need for locking here, the inode is not live anymore
+ * and just about to be freed.
+ */
+ if (ip->i_acl != XFS_ACL_NOT_CACHED)
+ posix_acl_release(ip->i_acl);
+ if (ip->i_default_acl != XFS_ACL_NOT_CACHED)
+ posix_acl_release(ip->i_default_acl);
+}
+
+
+/*
+ * System xattr handlers.
+ *
+ * Currently Posix ACLs are the only system namespace extended attribute
+ * handlers supported by XFS, so we just implement the handlers here.
+ * If we ever support other system extended attributes this will need
+ * some refactoring.
+ */
+
+static int
+xfs_decode_acl(const char *name)
+{
+ if (strcmp(name, "posix_acl_access") == 0)
+ return ACL_TYPE_ACCESS;
+ else if (strcmp(name, "posix_acl_default") == 0)
+ return ACL_TYPE_DEFAULT;
+ return -EINVAL;
+}
+
+static int
+xfs_xattr_system_get(struct inode *inode, const char *name,
+ void *value, size_t size)
+{
+ struct posix_acl *acl;
+ int type, error;
+
+ type = xfs_decode_acl(name);
+ if (type < 0)
+ return type;
+
+ acl = xfs_get_acl(inode, type);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ if (acl == NULL)
+ return -ENODATA;
+
+ error = posix_acl_to_xattr(acl, value, size);
+ posix_acl_release(acl);
+
+ return error;
+}
+
+static int
+xfs_xattr_system_set(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ struct posix_acl *acl = NULL;
+ int error = 0, type;
+
+ type = xfs_decode_acl(name);
+ if (type < 0)
+ return type;
+ if (flags & XATTR_CREATE)
+ return -EINVAL;
+ if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
+ return value ? -EACCES : 0;
+ if ((current_fsuid() != inode->i_uid) && !capable(CAP_FOWNER))
+ return -EPERM;
+
+ if (!value)
+ goto set_acl;
+
+ acl = posix_acl_from_xattr(value, size);
+ if (!acl) {
+ /*
+ * acl_set_file(3) may request that we set default ACLs with
+ * zero length -- defend (gracefully) against that here.
+ */
+ goto out;
+ }
+ if (IS_ERR(acl)) {
+ error = PTR_ERR(acl);
+ goto out;
+ }
+
+ error = posix_acl_valid(acl);
+ if (error)
+ goto out_release;
+
+ error = -EINVAL;
+ if (acl->a_count > XFS_ACL_MAX_ENTRIES)
+ goto out_release;
+
+ if (type == ACL_TYPE_ACCESS) {
+ mode_t mode = inode->i_mode;
+ error = posix_acl_equiv_mode(acl, &mode);
+
+ if (error <= 0) {
+ posix_acl_release(acl);
+ acl = NULL;
+
+ if (error < 0)
+ return error;
+ }
+
+ error = xfs_set_mode(inode, mode);
+ if (error)
+ goto out_release;
+ }
+
+ set_acl:
+ error = xfs_set_acl(inode, type, acl);
+ out_release:
+ posix_acl_release(acl);
+ out:
+ return error;
+}
+
+struct xattr_handler xfs_xattr_system_handler = {
+ .prefix = XATTR_SYSTEM_PREFIX,
+ .get = xfs_xattr_system_get,
+ .set = xfs_xattr_system_set,
+};
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index c7d684f..182d4be 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -41,7 +41,6 @@
#include "xfs_itable.h"
#include "xfs_error.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_bmap.h"
#include "xfs_buf_item.h"
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 631d013..84e391a 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -17,6 +17,7 @@
*/
#include "xfs.h"
#include "xfs_fs.h"
+#include "xfs_acl.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
@@ -51,6 +52,7 @@
#include <linux/capability.h>
#include <linux/xattr.h>
#include <linux/namei.h>
+#include <linux/posix_acl.h>
#include <linux/security.h>
#include <linux/falloc.h>
#include <linux/fiemap.h>
@@ -202,9 +204,8 @@ xfs_vn_mknod(
{
struct inode *inode;
struct xfs_inode *ip = NULL;
- xfs_acl_t *default_acl = NULL;
+ struct posix_acl *default_acl = NULL;
struct xfs_name name;
- int (*test_default_acl)(struct inode *) = _ACL_DEFAULT_EXISTS;
int error;
/*
@@ -219,18 +220,14 @@ xfs_vn_mknod(
rdev = 0;
}
- if (test_default_acl && test_default_acl(dir)) {
- if (!_ACL_ALLOC(default_acl)) {
- return -ENOMEM;
- }
- if (!_ACL_GET_DEFAULT(dir, default_acl)) {
- _ACL_FREE(default_acl);
- default_acl = NULL;
- }
- }
+ if (IS_POSIXACL(dir)) {
+ default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
+ if (IS_ERR(default_acl))
+ return -PTR_ERR(default_acl);
- if (IS_POSIXACL(dir) && !default_acl)
- mode &= ~current->fs->umask;
+ if (!default_acl)
+ mode &= ~current->fs->umask;
+ }
xfs_dentry_to_name(&name, dentry);
error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL);
@@ -244,10 +241,10 @@ xfs_vn_mknod(
goto out_cleanup_inode;
if (default_acl) {
- error = _ACL_INHERIT(inode, mode, default_acl);
+ error = -xfs_inherit_acl(inode, default_acl);
if (unlikely(error))
goto out_cleanup_inode;
- _ACL_FREE(default_acl);
+ posix_acl_release(default_acl);
}
@@ -257,8 +254,7 @@ xfs_vn_mknod(
out_cleanup_inode:
xfs_cleanup_inode(dir, inode, dentry);
out_free_acl:
- if (default_acl)
- _ACL_FREE(default_acl);
+ posix_acl_release(default_acl);
return -error;
}
@@ -488,26 +484,6 @@ xfs_vn_put_link(
kfree(s);
}
-#ifdef CONFIG_XFS_POSIX_ACL
-STATIC int
-xfs_check_acl(
- struct inode *inode,
- int mask)
-{
- struct xfs_inode *ip = XFS_I(inode);
- int error;
-
- xfs_itrace_entry(ip);
-
- if (XFS_IFORK_Q(ip)) {
- error = xfs_acl_iaccess(ip, mask, NULL);
- if (error != -1)
- return -error;
- }
-
- return -EAGAIN;
-}
-
STATIC int
xfs_vn_permission(
struct inode *inode,
@@ -515,9 +491,6 @@ xfs_vn_permission(
{
return generic_permission(inode, mask, xfs_check_acl);
}
-#else
-#define xfs_vn_permission NULL
-#endif
STATIC int
xfs_vn_getattr(
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 9142192..7078974 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -42,7 +42,6 @@
#include "xfs_error.h"
#include "xfs_itable.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_inode_item.h"
#include "xfs_buf_item.h"
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index d4e7ef8..36fb8a6 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -43,7 +43,6 @@
#include "xfs_itable.h"
#include "xfs_fsops.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_utils.h"
@@ -1735,18 +1734,8 @@ xfs_init_zones(void)
if (!xfs_ili_zone)
goto out_destroy_inode_zone;
-#ifdef CONFIG_XFS_POSIX_ACL
- xfs_acl_zone = kmem_zone_init(sizeof(xfs_acl_t), "xfs_acl");
- if (!xfs_acl_zone)
- goto out_destroy_ili_zone;
-#endif
-
return 0;
-#ifdef CONFIG_XFS_POSIX_ACL
- out_destroy_ili_zone:
-#endif
- kmem_zone_destroy(xfs_ili_zone);
out_destroy_inode_zone:
kmem_zone_destroy(xfs_inode_zone);
out_destroy_efi_zone:
@@ -1780,9 +1769,6 @@ xfs_init_zones(void)
STATIC void
xfs_destroy_zones(void)
{
-#ifdef CONFIG_XFS_POSIX_ACL
- kmem_zone_destroy(xfs_acl_zone);
-#endif
kmem_zone_destroy(xfs_ili_zone);
kmem_zone_destroy(xfs_inode_zone);
kmem_zone_destroy(xfs_efi_zone);
diff --git a/fs/xfs/linux-2.6/xfs_xattr.c b/fs/xfs/linux-2.6/xfs_xattr.c
index 964621f..497c7fb 100644
--- a/fs/xfs/linux-2.6/xfs_xattr.c
+++ b/fs/xfs/linux-2.6/xfs_xattr.c
@@ -29,67 +29,6 @@
#include <linux/xattr.h>
-/*
- * ACL handling. Should eventually be moved into xfs_acl.c
- */
-
-static int
-xfs_decode_acl(const char *name)
-{
- if (strcmp(name, "posix_acl_access") == 0)
- return _ACL_TYPE_ACCESS;
- else if (strcmp(name, "posix_acl_default") == 0)
- return _ACL_TYPE_DEFAULT;
- return -EINVAL;
-}
-
-/*
- * Get system extended attributes which at the moment only
- * includes Posix ACLs.
- */
-static int
-xfs_xattr_system_get(struct inode *inode, const char *name,
- void *buffer, size_t size)
-{
- int acl;
-
- acl = xfs_decode_acl(name);
- if (acl < 0)
- return acl;
-
- return xfs_acl_vget(inode, buffer, size, acl);
-}
-
-static int
-xfs_xattr_system_set(struct inode *inode, const char *name,
- const void *value, size_t size, int flags)
-{
- int acl;
-
- acl = xfs_decode_acl(name);
- if (acl < 0)
- return acl;
- if (flags & XATTR_CREATE)
- return -EINVAL;
-
- if (!value)
- return xfs_acl_vremove(inode, acl);
-
- return xfs_acl_vset(inode, (void *)value, size, acl);
-}
-
-static struct xattr_handler xfs_xattr_system_handler = {
- .prefix = XATTR_SYSTEM_PREFIX,
- .get = xfs_xattr_system_get,
- .set = xfs_xattr_system_set,
-};
-
-
-/*
- * Real xattr handling. The only difference between the namespaces is
- * a flag passed to the low-level attr code.
- */
-
static int
__xfs_xattr_get(struct inode *inode, const char *name,
void *value, size_t size, int xflags)
@@ -199,7 +138,9 @@ struct xattr_handler *xfs_xattr_handlers[] = {
&xfs_xattr_user_handler,
&xfs_xattr_trusted_handler,
&xfs_xattr_security_handler,
+#ifdef CONFIG_XFS_POSIX_ACL
&xfs_xattr_system_handler,
+#endif
NULL
};
@@ -310,7 +251,7 @@ xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size)
/*
* Then add the two synthetic ACL attributes.
*/
- if (xfs_acl_vhasacl_access(inode)) {
+ if (posix_acl_access_exists(inode)) {
error = list_one_attr(POSIX_ACL_XATTR_ACCESS,
strlen(POSIX_ACL_XATTR_ACCESS) + 1,
data, size, &context.count);
@@ -318,7 +259,7 @@ xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size)
return error;
}
- if (xfs_acl_vhasacl_default(inode)) {
+ if (posix_acl_default_exists(inode)) {
error = list_one_attr(POSIX_ACL_XATTR_DEFAULT,
strlen(POSIX_ACL_XATTR_DEFAULT) + 1,
data, size, &context.count);
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index 4d6d051..2f3f2229 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -42,7 +42,6 @@
#include "xfs_error.h"
#include "xfs_itable.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_trans_space.h"
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
index 1728f6a..d0d4a9a 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -42,7 +42,6 @@
#include "xfs_error.h"
#include "xfs_itable.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_trans_priv.h"
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 22b7c8d..45b1bfe 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -42,7 +42,6 @@
#include "xfs_error.h"
#include "xfs_bmap.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_trans_space.h"
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index 56a5965..a534663 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -42,7 +42,6 @@
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_qm.h"
diff --git a/fs/xfs/quota/xfs_qm_stats.c b/fs/xfs/quota/xfs_qm_stats.c
index 709f5f5..21b08c0 100644
--- a/fs/xfs/quota/xfs_qm_stats.c
+++ b/fs/xfs/quota/xfs_qm_stats.c
@@ -42,7 +42,6 @@
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_qm.h"
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index 7126f85..4e4276b 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -45,7 +45,6 @@
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_utils.h"
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
index eafa7ab..97ac964 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -42,7 +42,6 @@
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_trans_priv.h"
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
deleted file mode 100644
index a8cdd73..0000000
--- a/fs/xfs/xfs_acl.c
+++ /dev/null
@@ -1,874 +0,0 @@
-/*
- * Copyright (c) 2001-2002,2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "xfs.h"
-#include "xfs_fs.h"
-#include "xfs_types.h"
-#include "xfs_bit.h"
-#include "xfs_inum.h"
-#include "xfs_ag.h"
-#include "xfs_dir2.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_btree.h"
-#include "xfs_acl.h"
-#include "xfs_attr.h"
-#include "xfs_vnodeops.h"
-
-#include <linux/capability.h>
-#include <linux/posix_acl_xattr.h>
-
-STATIC int xfs_acl_setmode(struct inode *, xfs_acl_t *, int *);
-STATIC void xfs_acl_filter_mode(mode_t, xfs_acl_t *);
-STATIC void xfs_acl_get_endian(xfs_acl_t *);
-STATIC int xfs_acl_access(uid_t, gid_t, xfs_acl_t *, mode_t, cred_t *);
-STATIC int xfs_acl_invalid(xfs_acl_t *);
-STATIC void xfs_acl_sync_mode(mode_t, xfs_acl_t *);
-STATIC void xfs_acl_get_attr(struct inode *, xfs_acl_t *, int, int, int *);
-STATIC void xfs_acl_set_attr(struct inode *, xfs_acl_t *, int, int *);
-STATIC int xfs_acl_allow_set(struct inode *, int);
-
-kmem_zone_t *xfs_acl_zone;
-
-
-/*
- * Test for existence of access ACL attribute as efficiently as possible.
- */
-int
-xfs_acl_vhasacl_access(
- struct inode *vp)
-{
- int error;
-
- xfs_acl_get_attr(vp, NULL, _ACL_TYPE_ACCESS, ATTR_KERNOVAL, &error);
- return (error == 0);
-}
-
-/*
- * Test for existence of default ACL attribute as efficiently as possible.
- */
-int
-xfs_acl_vhasacl_default(
- struct inode *vp)
-{
- int error;
-
- if (!S_ISDIR(vp->i_mode))
- return 0;
- xfs_acl_get_attr(vp, NULL, _ACL_TYPE_DEFAULT, ATTR_KERNOVAL, &error);
- return (error == 0);
-}
-
-/*
- * Convert from extended attribute representation to in-memory for XFS.
- */
-STATIC int
-posix_acl_xattr_to_xfs(
- posix_acl_xattr_header *src,
- size_t size,
- xfs_acl_t *dest)
-{
- posix_acl_xattr_entry *src_entry;
- xfs_acl_entry_t *dest_entry;
- int n;
-
- if (!src || !dest)
- return EINVAL;
-
- if (size < sizeof(posix_acl_xattr_header))
- return EINVAL;
-
- if (src->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION))
- return EOPNOTSUPP;
-
- memset(dest, 0, sizeof(xfs_acl_t));
- dest->acl_cnt = posix_acl_xattr_count(size);
- if (dest->acl_cnt < 0 || dest->acl_cnt > XFS_ACL_MAX_ENTRIES)
- return EINVAL;
-
- /*
- * acl_set_file(3) may request that we set default ACLs with
- * zero length -- defend (gracefully) against that here.
- */
- if (!dest->acl_cnt)
- return 0;
-
- src_entry = (posix_acl_xattr_entry *)((char *)src + sizeof(*src));
- dest_entry = &dest->acl_entry[0];
-
- for (n = 0; n < dest->acl_cnt; n++, src_entry++, dest_entry++) {
- dest_entry->ae_perm = le16_to_cpu(src_entry->e_perm);
- if (_ACL_PERM_INVALID(dest_entry->ae_perm))
- return EINVAL;
- dest_entry->ae_tag = le16_to_cpu(src_entry->e_tag);
- switch(dest_entry->ae_tag) {
- case ACL_USER:
- case ACL_GROUP:
- dest_entry->ae_id = le32_to_cpu(src_entry->e_id);
- break;
- case ACL_USER_OBJ:
- case ACL_GROUP_OBJ:
- case ACL_MASK:
- case ACL_OTHER:
- dest_entry->ae_id = ACL_UNDEFINED_ID;
- break;
- default:
- return EINVAL;
- }
- }
- if (xfs_acl_invalid(dest))
- return EINVAL;
-
- return 0;
-}
-
-/*
- * Comparison function called from xfs_sort().
- * Primary key is ae_tag, secondary key is ae_id.
- */
-STATIC int
-xfs_acl_entry_compare(
- const void *va,
- const void *vb)
-{
- xfs_acl_entry_t *a = (xfs_acl_entry_t *)va,
- *b = (xfs_acl_entry_t *)vb;
-
- if (a->ae_tag == b->ae_tag)
- return (a->ae_id - b->ae_id);
- return (a->ae_tag - b->ae_tag);
-}
-
-/*
- * Convert from in-memory XFS to extended attribute representation.
- */
-STATIC int
-posix_acl_xfs_to_xattr(
- xfs_acl_t *src,
- posix_acl_xattr_header *dest,
- size_t size)
-{
- int n;
- size_t new_size = posix_acl_xattr_size(src->acl_cnt);
- posix_acl_xattr_entry *dest_entry;
- xfs_acl_entry_t *src_entry;
-
- if (size < new_size)
- return -ERANGE;
-
- /* Need to sort src XFS ACL by <ae_tag,ae_id> */
- xfs_sort(src->acl_entry, src->acl_cnt, sizeof(src->acl_entry[0]),
- xfs_acl_entry_compare);
-
- dest->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
- dest_entry = &dest->a_entries[0];
- src_entry = &src->acl_entry[0];
- for (n = 0; n < src->acl_cnt; n++, dest_entry++, src_entry++) {
- dest_entry->e_perm = cpu_to_le16(src_entry->ae_perm);
- if (_ACL_PERM_INVALID(src_entry->ae_perm))
- return -EINVAL;
- dest_entry->e_tag = cpu_to_le16(src_entry->ae_tag);
- switch (src_entry->ae_tag) {
- case ACL_USER:
- case ACL_GROUP:
- dest_entry->e_id = cpu_to_le32(src_entry->ae_id);
- break;
- case ACL_USER_OBJ:
- case ACL_GROUP_OBJ:
- case ACL_MASK:
- case ACL_OTHER:
- dest_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
- break;
- default:
- return -EINVAL;
- }
- }
- return new_size;
-}
-
-int
-xfs_acl_vget(
- struct inode *vp,
- void *acl,
- size_t size,
- int kind)
-{
- int error;
- xfs_acl_t *xfs_acl = NULL;
- posix_acl_xattr_header *ext_acl = acl;
- int flags = 0;
-
- if(size) {
- if (!(_ACL_ALLOC(xfs_acl))) {
- error = ENOMEM;
- goto out;
- }
- memset(xfs_acl, 0, sizeof(xfs_acl_t));
- } else
- flags = ATTR_KERNOVAL;
-
- xfs_acl_get_attr(vp, xfs_acl, kind, flags, &error);
- if (error)
- goto out;
-
- if (!size) {
- error = -posix_acl_xattr_size(XFS_ACL_MAX_ENTRIES);
- } else {
- if (xfs_acl_invalid(xfs_acl)) {
- error = EINVAL;
- goto out;
- }
- if (kind == _ACL_TYPE_ACCESS)
- xfs_acl_sync_mode(XFS_I(vp)->i_d.di_mode, xfs_acl);
- error = -posix_acl_xfs_to_xattr(xfs_acl, ext_acl, size);
- }
-out:
- if(xfs_acl)
- _ACL_FREE(xfs_acl);
- return -error;
-}
-
-int
-xfs_acl_vremove(
- struct inode *vp,
- int kind)
-{
- int error;
-
- error = xfs_acl_allow_set(vp, kind);
- if (!error) {
- error = xfs_attr_remove(XFS_I(vp),
- kind == _ACL_TYPE_DEFAULT?
- SGI_ACL_DEFAULT: SGI_ACL_FILE,
- ATTR_ROOT);
- if (error == ENOATTR)
- error = 0; /* 'scool */
- }
- return -error;
-}
-
-int
-xfs_acl_vset(
- struct inode *vp,
- void *acl,
- size_t size,
- int kind)
-{
- posix_acl_xattr_header *ext_acl = acl;
- xfs_acl_t *xfs_acl;
- int error;
- int basicperms = 0; /* more than std unix perms? */
-
- if (!acl)
- return -EINVAL;
-
- if (!(_ACL_ALLOC(xfs_acl)))
- return -ENOMEM;
-
- error = posix_acl_xattr_to_xfs(ext_acl, size, xfs_acl);
- if (error) {
- _ACL_FREE(xfs_acl);
- return -error;
- }
- if (!xfs_acl->acl_cnt) {
- _ACL_FREE(xfs_acl);
- return 0;
- }
-
- error = xfs_acl_allow_set(vp, kind);
-
- /* Incoming ACL exists, set file mode based on its value */
- if (!error && kind == _ACL_TYPE_ACCESS)
- error = xfs_acl_setmode(vp, xfs_acl, &basicperms);
-
- if (error)
- goto out;
-
- /*
- * If we have more than std unix permissions, set up the actual attr.
- * Otherwise, delete any existing attr. This prevents us from
- * having actual attrs for permissions that can be stored in the
- * standard permission bits.
- */
- if (!basicperms) {
- xfs_acl_set_attr(vp, xfs_acl, kind, &error);
- } else {
- error = -xfs_acl_vremove(vp, _ACL_TYPE_ACCESS);
- }
-
-out:
- _ACL_FREE(xfs_acl);
- return -error;
-}
-
-int
-xfs_acl_iaccess(
- xfs_inode_t *ip,
- mode_t mode,
- cred_t *cr)
-{
- xfs_acl_t *acl;
- int rval;
- struct xfs_name acl_name = {SGI_ACL_FILE, SGI_ACL_FILE_SIZE};
-
- if (!(_ACL_ALLOC(acl)))
- return -1;
-
- /* If the file has no ACL return -1. */
- rval = sizeof(xfs_acl_t);
- if (xfs_attr_fetch(ip, &acl_name, (char *)acl, &rval, ATTR_ROOT)) {
- _ACL_FREE(acl);
- return -1;
- }
- xfs_acl_get_endian(acl);
-
- /* If the file has an empty ACL return -1. */
- if (acl->acl_cnt == XFS_ACL_NOT_PRESENT) {
- _ACL_FREE(acl);
- return -1;
- }
-
- /* Synchronize ACL with mode bits */
- xfs_acl_sync_mode(ip->i_d.di_mode, acl);
-
- rval = xfs_acl_access(ip->i_d.di_uid, ip->i_d.di_gid, acl, mode, cr);
- _ACL_FREE(acl);
- return rval;
-}
-
-STATIC int
-xfs_acl_allow_set(
- struct inode *vp,
- int kind)
-{
- if (vp->i_flags & (S_IMMUTABLE|S_APPEND))
- return EPERM;
- if (kind == _ACL_TYPE_DEFAULT && !S_ISDIR(vp->i_mode))
- return ENOTDIR;
- if (vp->i_sb->s_flags & MS_RDONLY)
- return EROFS;
- if (XFS_I(vp)->i_d.di_uid != current_fsuid() && !capable(CAP_FOWNER))
- return EPERM;
- return 0;
-}
-
-/*
- * Note: cr is only used here for the capability check if the ACL test fails.
- * It is not used to find out the credentials uid or groups etc, as was
- * done in IRIX. It is assumed that the uid and groups for the current
- * thread are taken from "current" instead of the cr parameter.
- */
-STATIC int
-xfs_acl_access(
- uid_t fuid,
- gid_t fgid,
- xfs_acl_t *fap,
- mode_t md,
- cred_t *cr)
-{
- xfs_acl_entry_t matched;
- int i, allows;
- int maskallows = -1; /* true, but not 1, either */
- int seen_userobj = 0;
-
- matched.ae_tag = 0; /* Invalid type */
- matched.ae_perm = 0;
-
- for (i = 0; i < fap->acl_cnt; i++) {
- /*
- * Break out if we've got a user_obj entry or
- * a user entry and the mask (and have processed USER_OBJ)
- */
- if (matched.ae_tag == ACL_USER_OBJ)
- break;
- if (matched.ae_tag == ACL_USER) {
- if (maskallows != -1 && seen_userobj)
- break;
- if (fap->acl_entry[i].ae_tag != ACL_MASK &&
- fap->acl_entry[i].ae_tag != ACL_USER_OBJ)
- continue;
- }
- /* True if this entry allows the requested access */
- allows = ((fap->acl_entry[i].ae_perm & md) == md);
-
- switch (fap->acl_entry[i].ae_tag) {
- case ACL_USER_OBJ:
- seen_userobj = 1;
- if (fuid != current_fsuid())
- continue;
- matched.ae_tag = ACL_USER_OBJ;
- matched.ae_perm = allows;
- break;
- case ACL_USER:
- if (fap->acl_entry[i].ae_id != current_fsuid())
- continue;
- matched.ae_tag = ACL_USER;
- matched.ae_perm = allows;
- break;
- case ACL_GROUP_OBJ:
- if ((matched.ae_tag == ACL_GROUP_OBJ ||
- matched.ae_tag == ACL_GROUP) && !allows)
- continue;
- if (!in_group_p(fgid))
- continue;
- matched.ae_tag = ACL_GROUP_OBJ;
- matched.ae_perm = allows;
- break;
- case ACL_GROUP:
- if ((matched.ae_tag == ACL_GROUP_OBJ ||
- matched.ae_tag == ACL_GROUP) && !allows)
- continue;
- if (!in_group_p(fap->acl_entry[i].ae_id))
- continue;
- matched.ae_tag = ACL_GROUP;
- matched.ae_perm = allows;
- break;
- case ACL_MASK:
- maskallows = allows;
- break;
- case ACL_OTHER:
- if (matched.ae_tag != 0)
- continue;
- matched.ae_tag = ACL_OTHER;
- matched.ae_perm = allows;
- break;
- }
- }
- /*
- * First possibility is that no matched entry allows access.
- * The capability to override DAC may exist, so check for it.
- */
- switch (matched.ae_tag) {
- case ACL_OTHER:
- case ACL_USER_OBJ:
- if (matched.ae_perm)
- return 0;
- break;
- case ACL_USER:
- case ACL_GROUP_OBJ:
- case ACL_GROUP:
- if (maskallows && matched.ae_perm)
- return 0;
- break;
- case 0:
- break;
- }
-
- /* EACCES tells generic_permission to check for capability overrides */
- return EACCES;
-}
-
-/*
- * ACL validity checker.
- * This acl validation routine checks each ACL entry read in makes sense.
- */
-STATIC int
-xfs_acl_invalid(
- xfs_acl_t *aclp)
-{
- xfs_acl_entry_t *entry, *e;
- int user = 0, group = 0, other = 0, mask = 0;
- int mask_required = 0;
- int i, j;
-
- if (!aclp)
- goto acl_invalid;
-
- if (aclp->acl_cnt > XFS_ACL_MAX_ENTRIES)
- goto acl_invalid;
-
- for (i = 0; i < aclp->acl_cnt; i++) {
- entry = &aclp->acl_entry[i];
- switch (entry->ae_tag) {
- case ACL_USER_OBJ:
- if (user++)
- goto acl_invalid;
- break;
- case ACL_GROUP_OBJ:
- if (group++)
- goto acl_invalid;
- break;
- case ACL_OTHER:
- if (other++)
- goto acl_invalid;
- break;
- case ACL_USER:
- case ACL_GROUP:
- for (j = i + 1; j < aclp->acl_cnt; j++) {
- e = &aclp->acl_entry[j];
- if (e->ae_id == entry->ae_id &&
- e->ae_tag == entry->ae_tag)
- goto acl_invalid;
- }
- mask_required++;
- break;
- case ACL_MASK:
- if (mask++)
- goto acl_invalid;
- break;
- default:
- goto acl_invalid;
- }
- }
- if (!user || !group || !other || (mask_required && !mask))
- goto acl_invalid;
- else
- return 0;
-acl_invalid:
- return EINVAL;
-}
-
-/*
- * Do ACL endian conversion.
- */
-STATIC void
-xfs_acl_get_endian(
- xfs_acl_t *aclp)
-{
- xfs_acl_entry_t *ace, *end;
-
- INT_SET(aclp->acl_cnt, ARCH_CONVERT, aclp->acl_cnt);
- end = &aclp->acl_entry[0]+aclp->acl_cnt;
- for (ace = &aclp->acl_entry[0]; ace < end; ace++) {
- INT_SET(ace->ae_tag, ARCH_CONVERT, ace->ae_tag);
- INT_SET(ace->ae_id, ARCH_CONVERT, ace->ae_id);
- INT_SET(ace->ae_perm, ARCH_CONVERT, ace->ae_perm);
- }
-}
-
-/*
- * Get the ACL from the EA and do endian conversion.
- */
-STATIC void
-xfs_acl_get_attr(
- struct inode *vp,
- xfs_acl_t *aclp,
- int kind,
- int flags,
- int *error)
-{
- int len = sizeof(xfs_acl_t);
-
- ASSERT((flags & ATTR_KERNOVAL) ? (aclp == NULL) : 1);
- flags |= ATTR_ROOT;
- *error = xfs_attr_get(XFS_I(vp),
- kind == _ACL_TYPE_ACCESS ?
- SGI_ACL_FILE : SGI_ACL_DEFAULT,
- (char *)aclp, &len, flags);
- if (*error || (flags & ATTR_KERNOVAL))
- return;
- xfs_acl_get_endian(aclp);
-}
-
-/*
- * Set the EA with the ACL and do endian conversion.
- */
-STATIC void
-xfs_acl_set_attr(
- struct inode *vp,
- xfs_acl_t *aclp,
- int kind,
- int *error)
-{
- xfs_acl_entry_t *ace, *newace, *end;
- xfs_acl_t *newacl;
- int len;
-
- if (!(_ACL_ALLOC(newacl))) {
- *error = ENOMEM;
- return;
- }
-
- len = sizeof(xfs_acl_t) -
- (sizeof(xfs_acl_entry_t) * (XFS_ACL_MAX_ENTRIES - aclp->acl_cnt));
- end = &aclp->acl_entry[0]+aclp->acl_cnt;
- for (ace = &aclp->acl_entry[0], newace = &newacl->acl_entry[0];
- ace < end;
- ace++, newace++) {
- INT_SET(newace->ae_tag, ARCH_CONVERT, ace->ae_tag);
- INT_SET(newace->ae_id, ARCH_CONVERT, ace->ae_id);
- INT_SET(newace->ae_perm, ARCH_CONVERT, ace->ae_perm);
- }
- INT_SET(newacl->acl_cnt, ARCH_CONVERT, aclp->acl_cnt);
- *error = xfs_attr_set(XFS_I(vp),
- kind == _ACL_TYPE_ACCESS ?
- SGI_ACL_FILE: SGI_ACL_DEFAULT,
- (char *)newacl, len, ATTR_ROOT);
- _ACL_FREE(newacl);
-}
-
-int
-xfs_acl_vtoacl(
- struct inode *vp,
- xfs_acl_t *access_acl,
- xfs_acl_t *default_acl)
-{
- int error = 0;
-
- if (access_acl) {
- /*
- * Get the Access ACL and the mode. If either cannot
- * be obtained for some reason, invalidate the access ACL.
- */
- xfs_acl_get_attr(vp, access_acl, _ACL_TYPE_ACCESS, 0, &error);
- if (error)
- access_acl->acl_cnt = XFS_ACL_NOT_PRESENT;
- else /* We have a good ACL and the file mode, synchronize. */
- xfs_acl_sync_mode(XFS_I(vp)->i_d.di_mode, access_acl);
- }
-
- if (default_acl) {
- xfs_acl_get_attr(vp, default_acl, _ACL_TYPE_DEFAULT, 0, &error);
- if (error)
- default_acl->acl_cnt = XFS_ACL_NOT_PRESENT;
- }
- return error;
-}
-
-/*
- * This function retrieves the parent directory's acl, processes it
- * and lets the child inherit the acl(s) that it should.
- */
-int
-xfs_acl_inherit(
- struct inode *vp,
- mode_t mode,
- xfs_acl_t *pdaclp)
-{
- xfs_acl_t *cacl;
- int error = 0;
- int basicperms = 0;
-
- /*
- * If the parent does not have a default ACL, or it's an
- * invalid ACL, we're done.
- */
- if (!vp)
- return 0;
- if (!pdaclp || xfs_acl_invalid(pdaclp))
- return 0;
-
- /*
- * Copy the default ACL of the containing directory to
- * the access ACL of the new file and use the mode that
- * was passed in to set up the correct initial values for
- * the u::,g::[m::], and o:: entries. This is what makes
- * umask() "work" with ACL's.
- */
-
- if (!(_ACL_ALLOC(cacl)))
- return ENOMEM;
-
- memcpy(cacl, pdaclp, sizeof(xfs_acl_t));
- xfs_acl_filter_mode(mode, cacl);
- error = xfs_acl_setmode(vp, cacl, &basicperms);
- if (error)
- goto out_error;
-
- /*
- * Set the Default and Access ACL on the file. The mode is already
- * set on the file, so we don't need to worry about that.
- *
- * If the new file is a directory, its default ACL is a copy of
- * the containing directory's default ACL.
- */
- if (S_ISDIR(vp->i_mode))
- xfs_acl_set_attr(vp, pdaclp, _ACL_TYPE_DEFAULT, &error);
- if (!error && !basicperms)
- xfs_acl_set_attr(vp, cacl, _ACL_TYPE_ACCESS, &error);
-out_error:
- _ACL_FREE(cacl);
- return error;
-}
-
-/*
- * Set up the correct mode on the file based on the supplied ACL. This
- * makes sure that the mode on the file reflects the state of the
- * u::,g::[m::], and o:: entries in the ACL. Since the mode is where
- * the ACL is going to get the permissions for these entries, we must
- * synchronize the mode whenever we set the ACL on a file.
- */
-STATIC int
-xfs_acl_setmode(
- struct inode *vp,
- xfs_acl_t *acl,
- int *basicperms)
-{
- struct iattr iattr;
- xfs_acl_entry_t *ap;
- xfs_acl_entry_t *gap = NULL;
- int i, nomask = 1;
-
- *basicperms = 1;
-
- if (acl->acl_cnt == XFS_ACL_NOT_PRESENT)
- return 0;
-
- /*
- * Copy the u::, g::, o::, and m:: bits from the ACL into the
- * mode. The m:: bits take precedence over the g:: bits.
- */
- iattr.ia_valid = ATTR_MODE;
- iattr.ia_mode = XFS_I(vp)->i_d.di_mode;
- iattr.ia_mode &= ~(S_IRWXU|S_IRWXG|S_IRWXO);
- ap = acl->acl_entry;
- for (i = 0; i < acl->acl_cnt; ++i) {
- switch (ap->ae_tag) {
- case ACL_USER_OBJ:
- iattr.ia_mode |= ap->ae_perm << 6;
- break;
- case ACL_GROUP_OBJ:
- gap = ap;
- break;
- case ACL_MASK: /* more than just standard modes */
- nomask = 0;
- iattr.ia_mode |= ap->ae_perm << 3;
- *basicperms = 0;
- break;
- case ACL_OTHER:
- iattr.ia_mode |= ap->ae_perm;
- break;
- default: /* more than just standard modes */
- *basicperms = 0;
- break;
- }
- ap++;
- }
-
- /* Set the group bits from ACL_GROUP_OBJ if there's no ACL_MASK */
- if (gap && nomask)
- iattr.ia_mode |= gap->ae_perm << 3;
-
- return xfs_setattr(XFS_I(vp), &iattr, 0);
-}
-
-/*
- * The permissions for the special ACL entries (u::, g::[m::], o::) are
- * actually stored in the file mode (if there is both a group and a mask,
- * the group is stored in the ACL entry and the mask is stored on the file).
- * This allows the mode to remain automatically in sync with the ACL without
- * the need for a call-back to the ACL system at every point where the mode
- * could change. This function takes the permissions from the specified mode
- * and places it in the supplied ACL.
- *
- * This implementation draws its validity from the fact that, when the ACL
- * was assigned, the mode was copied from the ACL.
- * If the mode did not change, therefore, the mode remains exactly what was
- * taken from the special ACL entries at assignment.
- * If a subsequent chmod() was done, the POSIX spec says that the change in
- * mode must cause an update to the ACL seen at user level and used for
- * access checks. Before and after a mode change, therefore, the file mode
- * most accurately reflects what the special ACL entries should permit/deny.
- *
- * CAVEAT: If someone sets the SGI_ACL_FILE attribute directly,
- * the existing mode bits will override whatever is in the
- * ACL. Similarly, if there is a pre-existing ACL that was
- * never in sync with its mode (owing to a bug in 6.5 and
- * before), it will now magically (or mystically) be
- * synchronized. This could cause slight astonishment, but
- * it is better than inconsistent permissions.
- *
- * The supplied ACL is a template that may contain any combination
- * of special entries. These are treated as place holders when we fill
- * out the ACL. This routine does not add or remove special entries, it
- * simply unites each special entry with its associated set of permissions.
- */
-STATIC void
-xfs_acl_sync_mode(
- mode_t mode,
- xfs_acl_t *acl)
-{
- int i, nomask = 1;
- xfs_acl_entry_t *ap;
- xfs_acl_entry_t *gap = NULL;
-
- /*
- * Set ACL entries. POSIX1003.1eD16 requires that the MASK
- * be set instead of the GROUP entry, if there is a MASK.
- */
- for (ap = acl->acl_entry, i = 0; i < acl->acl_cnt; ap++, i++) {
- switch (ap->ae_tag) {
- case ACL_USER_OBJ:
- ap->ae_perm = (mode >> 6) & 0x7;
- break;
- case ACL_GROUP_OBJ:
- gap = ap;
- break;
- case ACL_MASK:
- nomask = 0;
- ap->ae_perm = (mode >> 3) & 0x7;
- break;
- case ACL_OTHER:
- ap->ae_perm = mode & 0x7;
- break;
- default:
- break;
- }
- }
- /* Set the ACL_GROUP_OBJ if there's no ACL_MASK */
- if (gap && nomask)
- gap->ae_perm = (mode >> 3) & 0x7;
-}
-
-/*
- * When inheriting an Access ACL from a directory Default ACL,
- * the ACL bits are set to the intersection of the ACL default
- * permission bits and the file permission bits in mode. If there
- * are no permission bits on the file then we must not give them
- * the ACL. This is what what makes umask() work with ACLs.
- */
-STATIC void
-xfs_acl_filter_mode(
- mode_t mode,
- xfs_acl_t *acl)
-{
- int i, nomask = 1;
- xfs_acl_entry_t *ap;
- xfs_acl_entry_t *gap = NULL;
-
- /*
- * Set ACL entries. POSIX1003.1eD16 requires that the MASK
- * be merged with GROUP entry, if there is a MASK.
- */
- for (ap = acl->acl_entry, i = 0; i < acl->acl_cnt; ap++, i++) {
- switch (ap->ae_tag) {
- case ACL_USER_OBJ:
- ap->ae_perm &= (mode >> 6) & 0x7;
- break;
- case ACL_GROUP_OBJ:
- gap = ap;
- break;
- case ACL_MASK:
- nomask = 0;
- ap->ae_perm &= (mode >> 3) & 0x7;
- break;
- case ACL_OTHER:
- ap->ae_perm &= mode & 0x7;
- break;
- default:
- break;
- }
- }
- /* Set the ACL_GROUP_OBJ if there's no ACL_MASK */
- if (gap && nomask)
- gap->ae_perm &= (mode >> 3) & 0x7;
-}
diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h
index 642f1db..63dc1f2 100644
--- a/fs/xfs/xfs_acl.h
+++ b/fs/xfs/xfs_acl.h
@@ -18,81 +18,48 @@
#ifndef __XFS_ACL_H__
#define __XFS_ACL_H__
-/*
- * Access Control Lists
- */
-typedef __uint16_t xfs_acl_perm_t;
-typedef __int32_t xfs_acl_tag_t;
-typedef __int32_t xfs_acl_id_t;
+struct inode;
+struct posix_acl;
+struct xfs_inode;
#define XFS_ACL_MAX_ENTRIES 25
#define XFS_ACL_NOT_PRESENT (-1)
-typedef struct xfs_acl_entry {
- xfs_acl_tag_t ae_tag;
- xfs_acl_id_t ae_id;
- xfs_acl_perm_t ae_perm;
-} xfs_acl_entry_t;
-
-typedef struct xfs_acl {
- __int32_t acl_cnt;
- xfs_acl_entry_t acl_entry[XFS_ACL_MAX_ENTRIES];
-} xfs_acl_t;
+/* On-disk XFS access control list structure */
+struct xfs_acl {
+ __be32 acl_cnt;
+ struct xfs_acl_entry {
+ __be32 ae_tag;
+ __be32 ae_id;
+ __be16 ae_perm;
+ } acl_entry[XFS_ACL_MAX_ENTRIES];
+};
/* On-disk XFS extended attribute names */
-#define SGI_ACL_FILE "SGI_ACL_FILE"
-#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
+#define SGI_ACL_FILE "SGI_ACL_FILE"
+#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
-#define _ACL_TYPE_ACCESS 1
-#define _ACL_TYPE_DEFAULT 2
-
#ifdef CONFIG_XFS_POSIX_ACL
+extern int xfs_check_acl(struct inode *inode, int mask);
+extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
+extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
+extern int xfs_acl_chmod(struct inode *inode);
+extern void xfs_inode_init_acls(struct xfs_inode *ip);
+extern void xfs_inode_clear_acls(struct xfs_inode *ip);
+extern int posix_acl_access_exists(struct inode *inode);
+extern int posix_acl_default_exists(struct inode *inode);
-struct vattr;
-struct xfs_inode;
-
-extern struct kmem_zone *xfs_acl_zone;
-#define xfs_acl_zone_init(zone, name) \
- (zone) = kmem_zone_init(sizeof(xfs_acl_t), (name))
-#define xfs_acl_zone_destroy(zone) kmem_zone_destroy(zone)
-
-extern int xfs_acl_inherit(struct inode *, mode_t mode, xfs_acl_t *);
-extern int xfs_acl_iaccess(struct xfs_inode *, mode_t, cred_t *);
-extern int xfs_acl_vtoacl(struct inode *, xfs_acl_t *, xfs_acl_t *);
-extern int xfs_acl_vhasacl_access(struct inode *);
-extern int xfs_acl_vhasacl_default(struct inode *);
-extern int xfs_acl_vset(struct inode *, void *, size_t, int);
-extern int xfs_acl_vget(struct inode *, void *, size_t, int);
-extern int xfs_acl_vremove(struct inode *, int);
-
-#define _ACL_PERM_INVALID(perm) ((perm) & ~(ACL_READ|ACL_WRITE|ACL_EXECUTE))
-
-#define _ACL_INHERIT(c,m,d) (xfs_acl_inherit(c,m,d))
-#define _ACL_GET_ACCESS(pv,pa) (xfs_acl_vtoacl(pv,pa,NULL) == 0)
-#define _ACL_GET_DEFAULT(pv,pd) (xfs_acl_vtoacl(pv,NULL,pd) == 0)
-#define _ACL_ACCESS_EXISTS xfs_acl_vhasacl_access
-#define _ACL_DEFAULT_EXISTS xfs_acl_vhasacl_default
-
-#define _ACL_ALLOC(a) ((a) = kmem_zone_alloc(xfs_acl_zone, KM_SLEEP))
-#define _ACL_FREE(a) ((a)? kmem_zone_free(xfs_acl_zone, (a)):(void)0)
-
+extern struct xattr_handler xfs_xattr_system_handler;
#else
-#define xfs_acl_zone_init(zone,name)
-#define xfs_acl_zone_destroy(zone)
-#define xfs_acl_vset(v,p,sz,t) (-EOPNOTSUPP)
-#define xfs_acl_vget(v,p,sz,t) (-EOPNOTSUPP)
-#define xfs_acl_vremove(v,t) (-EOPNOTSUPP)
-#define xfs_acl_vhasacl_access(v) (0)
-#define xfs_acl_vhasacl_default(v) (0)
-#define _ACL_ALLOC(a) (1) /* successfully allocate nothing */
-#define _ACL_FREE(a) ((void)0)
-#define _ACL_INHERIT(c,m,d) (0)
-#define _ACL_GET_ACCESS(pv,pa) (0)
-#define _ACL_GET_DEFAULT(pv,pd) (0)
-#define _ACL_ACCESS_EXISTS (NULL)
-#define _ACL_DEFAULT_EXISTS (NULL)
-#endif
-
+# define xfs_check_acl NULL
+# define xfs_get_acl(inode, type) NULL
+# define xfs_inherit_acl(inode, default_acl) 0
+# define xfs_acl_chmod(inode) 0
+# define xfs_inode_init_acls(ip)
+# define xfs_inode_clear_acls(ip)
+# define posix_acl_access_exists(inode) 0
+# define posix_acl_default_exists(inode) 0
+#endif /* CONFIG_XFS_POSIX_ACL */
#endif /* __XFS_ACL_H__ */
diff --git a/fs/xfs/xfs_arch.h b/fs/xfs/xfs_arch.h
index 53d5e70..0902249 100644
--- a/fs/xfs/xfs_arch.h
+++ b/fs/xfs/xfs_arch.h
@@ -73,28 +73,6 @@ static inline void be64_add_cpu(__be64 *a, __s64 b)
#endif /* __KERNEL__ */
-/* do we need conversion? */
-#define ARCH_NOCONVERT 1
-#ifdef XFS_NATIVE_HOST
-# define ARCH_CONVERT ARCH_NOCONVERT
-#else
-# define ARCH_CONVERT 0
-#endif
-
-/* generic swapping macros */
-
-#ifndef HAVE_SWABMACROS
-#define INT_SWAP16(type,var) ((typeof(type))(__swab16((__u16)(var))))
-#define INT_SWAP32(type,var) ((typeof(type))(__swab32((__u32)(var))))
-#define INT_SWAP64(type,var) ((typeof(type))(__swab64((__u64)(var))))
-#endif
-
-#define INT_SWAP(type, var) \
- ((sizeof(type) == 8) ? INT_SWAP64(type,var) : \
- ((sizeof(type) == 4) ? INT_SWAP32(type,var) : \
- ((sizeof(type) == 2) ? INT_SWAP16(type,var) : \
- (var))))
-
/*
* get and set integers from potentially unaligned locations
*/
@@ -107,16 +85,6 @@ static inline void be64_add_cpu(__be64 *a, __s64 b)
((__u8*)(pointer))[1] = (((value) ) & 0xff); \
}
-/* does not return a value */
-#define INT_SET(reference,arch,valueref) \
- (__builtin_constant_p(valueref) ? \
- (void)( (reference) = ( ((arch) != ARCH_NOCONVERT) ? (INT_SWAP((reference),(valueref))) : (valueref)) ) : \
- (void)( \
- ((reference) = (valueref)), \
- ( ((arch) != ARCH_NOCONVERT) ? (reference) = INT_SWAP((reference),(reference)) : 0 ) \
- ) \
- )
-
/*
* In directories inode numbers are stored as unaligned arrays of unsigned
* 8bit integers on disk.
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index cd1008b..db15feb 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -45,7 +45,6 @@
#include "xfs_error.h"
#include "xfs_quota.h"
#include "xfs_trans_space.h"
-#include "xfs_acl.h"
#include "xfs_rw.h"
#include "xfs_vnodeops.h"
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index 73e1c0d..76c540f 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -18,6 +18,7 @@
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_types.h"
+#include "xfs_acl.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
@@ -82,6 +83,7 @@ xfs_inode_alloc(
memset(&ip->i_d, 0, sizeof(xfs_icdinode_t));
ip->i_size = 0;
ip->i_new_size = 0;
+ xfs_inode_init_acls(ip);
/*
* Initialize inode's trace buffers.
@@ -558,6 +560,7 @@ xfs_ireclaim(
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!spin_is_locked(&ip->i_flags_lock));
ASSERT(completion_done(&ip->i_flush));
+ xfs_inode_clear_acls(ip);
kmem_zone_free(xfs_inode_zone, ip);
}
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 123b20c..1f22d65 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -49,7 +49,6 @@
#include "xfs_utils.h"
#include "xfs_dir2_trace.h"
#include "xfs_quota.h"
-#include "xfs_acl.h"
#include "xfs_filestream.h"
#include "xfs_vnodeops.h"
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index f879c1b..7701670 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -18,6 +18,7 @@
#ifndef __XFS_INODE_H__
#define __XFS_INODE_H__
+struct posix_acl;
struct xfs_dinode;
struct xfs_inode;
@@ -272,6 +273,11 @@ typedef struct xfs_inode {
/* VFS inode */
struct inode i_vnode; /* embedded VFS inode */
+#ifdef CONFIG_XFS_POSIX_ACL
+ struct posix_acl *i_acl;
+ struct posix_acl *i_default_acl;
+#endif
+
/* Trace buffers per inode. */
#ifdef XFS_INODE_TRACE
struct ktrace *i_trace; /* general inode trace */
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index feb30a9..67ae5555 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -42,7 +42,6 @@
#include "xfs_error.h"
#include "xfs_itable.h"
#include "xfs_rw.h"
-#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_trans_space.h"
diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c
index 36f3a21..fea6861 100644
--- a/fs/xfs/xfs_rw.c
+++ b/fs/xfs/xfs_rw.c
@@ -41,7 +41,6 @@
#include "xfs_ialloc.h"
#include "xfs_attr.h"
#include "xfs_bmap.h"
-#include "xfs_acl.h"
#include "xfs_error.h"
#include "xfs_buf_item.h"
#include "xfs_rw.h"
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index b56321b..c4eca5e 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -42,6 +42,7 @@
#include "xfs_ialloc.h"
#include "xfs_alloc.h"
#include "xfs_bmap.h"
+#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_rw.h"
#include "xfs_error.h"
@@ -467,8 +468,20 @@ xfs_setattr(
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
- if (code) {
+ if (code)
return code;
+
+ /*
+ * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
+ * update. We could avoid this with linked transactions
+ * and passing down the transaction pointer all the way
+ * to attr_set. No previous user of the generic
+ * Posix ACL code seems to care about this issue either.
+ */
+ if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
+ code = -xfs_acl_chmod(inode);
+ if (code)
+ return XFS_ERROR(code);
}
if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE) &&
diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h
index 04373c6..a9e102d 100644
--- a/fs/xfs/xfs_vnodeops.h
+++ b/fs/xfs/xfs_vnodeops.h
@@ -18,6 +18,7 @@ int xfs_setattr(struct xfs_inode *ip, struct iattr *vap, int flags);
#define XFS_ATTR_DMI 0x01 /* invocation from a DMI function */
#define XFS_ATTR_NONBLOCK 0x02 /* return EAGAIN if operation would block */
#define XFS_ATTR_NOLOCK 0x04 /* Don't grab any conflicting locks */
+#define XFS_ATTR_NOACL 0x08 /* Don't call xfs_acl_chmod */
int xfs_readlink(struct xfs_inode *ip, char *link);
int xfs_fsync(struct xfs_inode *ip);
generated by cgit v1.1 at 2024-11-03 12:54:16 +0000