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authorAl Viro <viro@zeniv.linux.org.uk>2008-08-24 07:29:52 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2008-10-23 05:13:10 -0400
commit53c9c5c0e32c69f9df1822e47671c13e3402c82f (patch)
tree76aae2cfde109c97451d40b5c6e5063e22690a03 /fs
parenta9885444f7ff6e9156adb1adf5558ded9a39ad0a (diff)
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[PATCH] prepare vfs_readdir() callers to returning filldir result
It's not the final state, but it allows moving ->readdir() instances to passing filldir return value to caller of vfs_readdir(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/compat.c22
-rw-r--r--fs/exportfs/expfs.c7
-rw-r--r--fs/nfsd/vfs.c11
-rw-r--r--fs/readdir.c22
4 files changed, 29 insertions, 33 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 5f9ec44..cb36245 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -869,7 +869,7 @@ asmlinkage long compat_sys_old_readdir(unsigned int fd,
buf.dirent = dirent;
error = vfs_readdir(file, compat_fillonedir, &buf);
- if (error >= 0)
+ if (buf.result)
error = buf.result;
fput(file);
@@ -956,9 +956,8 @@ asmlinkage long compat_sys_getdents(unsigned int fd,
buf.error = 0;
error = vfs_readdir(file, compat_filldir, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.error;
+ if (error >= 0)
+ error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
if (put_user(file->f_pos, &lastdirent->d_off))
@@ -966,8 +965,6 @@ asmlinkage long compat_sys_getdents(unsigned int fd,
else
error = count - buf.count;
}
-
-out_putf:
fput(file);
out:
return error;
@@ -1047,19 +1044,16 @@ asmlinkage long compat_sys_getdents64(unsigned int fd,
buf.error = 0;
error = vfs_readdir(file, compat_filldir64, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.error;
+ if (error >= 0)
+ error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
typeof(lastdirent->d_off) d_off = file->f_pos;
- error = -EFAULT;
if (__put_user_unaligned(d_off, &lastdirent->d_off))
- goto out_putf;
- error = count - buf.count;
+ error = -EFAULT;
+ else
+ error = count - buf.count;
}
-
-out_putf:
fput(file);
out:
return error;
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 51bdc5c..80246ba 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -280,13 +280,14 @@ static int get_name(struct vfsmount *mnt, struct dentry *dentry,
int old_seq = buffer.sequence;
error = vfs_readdir(file, filldir_one, &buffer);
+ if (buffer.found) {
+ error = 0;
+ break;
+ }
if (error < 0)
break;
- error = 0;
- if (buffer.found)
- break;
error = -ENOENT;
if (old_seq == buffer.sequence)
break;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 93b22f6..e3e37f7 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1831,6 +1831,7 @@ struct buffered_dirent {
struct readdir_data {
char *dirent;
size_t used;
+ int full;
};
static int nfsd_buffered_filldir(void *__buf, const char *name, int namlen,
@@ -1841,8 +1842,10 @@ static int nfsd_buffered_filldir(void *__buf, const char *name, int namlen,
unsigned int reclen;
reclen = ALIGN(sizeof(struct buffered_dirent) + namlen, sizeof(u64));
- if (buf->used + reclen > PAGE_SIZE)
+ if (buf->used + reclen > PAGE_SIZE) {
+ buf->full = 1;
return -EINVAL;
+ }
de->namlen = namlen;
de->offset = offset;
@@ -1874,9 +1877,13 @@ static int nfsd_buffered_readdir(struct file *file, filldir_t func,
unsigned int reclen;
buf.used = 0;
+ buf.full = 0;
host_err = vfs_readdir(file, nfsd_buffered_filldir, &buf);
- if (host_err)
+ if (buf.full)
+ host_err = 0;
+
+ if (host_err < 0)
break;
size = buf.used;
diff --git a/fs/readdir.c b/fs/readdir.c
index 93a7559..b318d9b 100644
--- a/fs/readdir.c
+++ b/fs/readdir.c
@@ -117,7 +117,7 @@ asmlinkage long old_readdir(unsigned int fd, struct old_linux_dirent __user * di
buf.dirent = dirent;
error = vfs_readdir(file, fillonedir, &buf);
- if (error >= 0)
+ if (buf.result)
error = buf.result;
fput(file);
@@ -209,9 +209,8 @@ asmlinkage long sys_getdents(unsigned int fd, struct linux_dirent __user * diren
buf.error = 0;
error = vfs_readdir(file, filldir, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.error;
+ if (error >= 0)
+ error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
if (put_user(file->f_pos, &lastdirent->d_off))
@@ -219,8 +218,6 @@ asmlinkage long sys_getdents(unsigned int fd, struct linux_dirent __user * diren
else
error = count - buf.count;
}
-
-out_putf:
fput(file);
out:
return error;
@@ -293,19 +290,16 @@ asmlinkage long sys_getdents64(unsigned int fd, struct linux_dirent64 __user * d
buf.error = 0;
error = vfs_readdir(file, filldir64, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.error;
+ if (error >= 0)
+ error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
typeof(lastdirent->d_off) d_off = file->f_pos;
- error = -EFAULT;
if (__put_user(d_off, &lastdirent->d_off))
- goto out_putf;
- error = count - buf.count;
+ error = -EFAULT;
+ else
+ error = count - buf.count;
}
-
-out_putf:
fput(file);
out:
return error;