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| author | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2008-10-16 07:50:29 +0900 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-10-23 05:13:19 -0400 |
| commit | 0612d9fb270a474fe6a46cc5b8d3f5b71cf5f580 (patch) | |
| tree | c6c9a6d2a457b6146615244e6b15ecac3b73daae | |
| parent | 8f3dfaa5bab767a043c5af5b879fb86c03329f8a (diff) | |
| download | linux-0612d9fb270a474fe6a46cc5b8d3f5b71cf5f580.tar.bz2 | |
[PATCH vfs-2.6 5/6] vfs: remove LOOKUP_PARENT from non LOOKUP_PARENT lookup
lookup_hash() with LOOKUP_PARENT is bogus. And this prepares to add
new intent on those path.
The user of LOOKUP_PARENT intent is nfs only, and it checks whether
nd->flags has LOOKUP_CREATE or LOOKUP_OPEN, so the result is same.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
| -rw-r--r-- | fs/namei.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/fs/namei.c b/fs/namei.c index b7cd65224d60..18894fdf048a 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2170,16 +2170,19 @@ static long do_rmdir(int dfd, const char __user *pathname) return error; switch(nd.last_type) { - case LAST_DOTDOT: - error = -ENOTEMPTY; - goto exit1; - case LAST_DOT: - error = -EINVAL; - goto exit1; - case LAST_ROOT: - error = -EBUSY; - goto exit1; + case LAST_DOTDOT: + error = -ENOTEMPTY; + goto exit1; + case LAST_DOT: + error = -EINVAL; + goto exit1; + case LAST_ROOT: + error = -EBUSY; + goto exit1; } + + nd.flags &= ~LOOKUP_PARENT; + mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT); dentry = lookup_hash(&nd); error = PTR_ERR(dentry); @@ -2257,6 +2260,9 @@ static long do_unlinkat(int dfd, const char __user *pathname) error = -EISDIR; if (nd.last_type != LAST_NORM) goto exit1; + + nd.flags &= ~LOOKUP_PARENT; + mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT); dentry = lookup_hash(&nd); error = PTR_ERR(dentry); @@ -2646,6 +2652,9 @@ asmlinkage long sys_renameat(int olddfd, const char __user *oldname, if (newnd.last_type != LAST_NORM) goto exit2; + oldnd.flags &= ~LOOKUP_PARENT; + newnd.flags &= ~LOOKUP_PARENT; + trap = lock_rename(new_dir, old_dir); old_dentry = lookup_hash(&oldnd); |