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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-18 10:50:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-18 10:50:52 -0700
commit3f6f7e6d57b8a0ae2810ae7aac70c51b6f2a6304 (patch)
treeed4460a8f072cd088e225163bdeeafc5ce9fecb6
parent8f627a8a881481598c2591c3acc122fb9be7bac4 (diff)
parent31be83aeaee22fa165862ad449c7131ceaf1cf91 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bcopeland/omfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bcopeland/omfs: omfs: make readdir stop when filldir says so omfs: merge unlink() and rmdir(), close leak in rename() omfs: stop playing silly buggers with omfs_unlink() in ->rename() omfs: rename() needs to mark old_inode dirty after ctime update
-rw-r--r--fs/omfs/dir.c66
1 files changed, 20 insertions, 46 deletions
diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c
index 393f3f659da..de4ff29f1e0 100644
--- a/fs/omfs/dir.c
+++ b/fs/omfs/dir.c
@@ -235,33 +235,22 @@ static int omfs_dir_is_empty(struct inode *inode)
return *ptr != ~0;
}
-static int omfs_unlink(struct inode *dir, struct dentry *dentry)
+static int omfs_remove(struct inode *dir, struct dentry *dentry)
{
- int ret;
struct inode *inode = dentry->d_inode;
+ int ret;
+
+ if (S_ISDIR(inode->i_mode) && !omfs_dir_is_empty(inode))
+ return -ENOTEMPTY;
ret = omfs_delete_entry(dentry);
if (ret)
- goto end_unlink;
-
- inode_dec_link_count(inode);
+ return ret;
+
+ clear_nlink(inode);
+ mark_inode_dirty(inode);
mark_inode_dirty(dir);
-
-end_unlink:
- return ret;
-}
-
-static int omfs_rmdir(struct inode *dir, struct dentry *dentry)
-{
- int err = -ENOTEMPTY;
- struct inode *inode = dentry->d_inode;
-
- if (omfs_dir_is_empty(inode)) {
- err = omfs_unlink(dir, dentry);
- if (!err)
- inode_dec_link_count(inode);
- }
- return err;
+ return 0;
}
static int omfs_add_node(struct inode *dir, struct dentry *dentry, int mode)
@@ -372,9 +361,10 @@ static int omfs_fill_chain(struct file *filp, void *dirent, filldir_t filldir,
res = filldir(dirent, oi->i_name, strnlen(oi->i_name,
OMFS_NAMELEN), filp->f_pos, self, d_type);
- if (res == 0)
- filp->f_pos++;
brelse(bh);
+ if (res < 0)
+ break;
+ filp->f_pos++;
}
out:
return res;
@@ -385,44 +375,28 @@ static int omfs_rename(struct inode *old_dir, struct dentry *old_dentry,
{
struct inode *new_inode = new_dentry->d_inode;
struct inode *old_inode = old_dentry->d_inode;
- struct buffer_head *bh;
- int is_dir;
int err;
- is_dir = S_ISDIR(old_inode->i_mode);
-
if (new_inode) {
/* overwriting existing file/dir */
- err = -ENOTEMPTY;
- if (is_dir && !omfs_dir_is_empty(new_inode))
- goto out;
-
- err = -ENOENT;
- bh = omfs_find_entry(new_dir, new_dentry->d_name.name,
- new_dentry->d_name.len);
- if (IS_ERR(bh))
- goto out;
- brelse(bh);
-
- err = omfs_unlink(new_dir, new_dentry);
+ err = omfs_remove(new_dir, new_dentry);
if (err)
goto out;
}
/* since omfs locates files by name, we need to unlink _before_
* adding the new link or we won't find the old one */
- inode_inc_link_count(old_inode);
- err = omfs_unlink(old_dir, old_dentry);
- if (err) {
- inode_dec_link_count(old_inode);
+ err = omfs_delete_entry(old_dentry);
+ if (err)
goto out;
- }
+ mark_inode_dirty(old_dir);
err = omfs_add_link(new_dentry, old_inode);
if (err)
goto out;
old_inode->i_ctime = CURRENT_TIME_SEC;
+ mark_inode_dirty(old_inode);
out:
return err;
}
@@ -488,8 +462,8 @@ const struct inode_operations omfs_dir_inops = {
.mkdir = omfs_mkdir,
.rename = omfs_rename,
.create = omfs_create,
- .unlink = omfs_unlink,
- .rmdir = omfs_rmdir,
+ .unlink = omfs_remove,
+ .rmdir = omfs_remove,
};
const struct file_operations omfs_dir_operations = {