From 0612d9fb270a474fe6a46cc5b8d3f5b71cf5f580 Mon Sep 17 00:00:00 2001 From: OGAWA Hirofumi Date: Thu, 16 Oct 2008 07:50:29 +0900 Subject: [PATCH] [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 --- fs/namei.c | 27 ++++++++++++++++++--------- 1 file 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); -- 2.20.1