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| author | Al Viro <viro@zeniv.linux.org.uk> | 2009-04-07 11:44:16 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-11 21:35:58 -0400 |
| commit | 9b4a9b14a793bc69b505ed916051f6f32db13bb8 (patch) | |
| tree | 5e4aa273b714b3e10a360f71c2178de66f83bd66 /fs | |
| parent | 4e44b6852e03c915618ca6776b6697b436246b00 (diff) | |
| download | linux-9b4a9b14a793bc69b505ed916051f6f32db13bb8.tar.gz linux-9b4a9b14a793bc69b505ed916051f6f32db13bb8.tar.bz2 linux-9b4a9b14a793bc69b505ed916051f6f32db13bb8.zip | |
Preparations to caching root in path_walk()
Split do_path_lookup(), opencode the call from do_filp_open()
do_filp_open() is the only caller of do_path_lookup() that
cares about root afterwards (it keeps resolving symlinks on
O_CREAT path after it'd done LOOKUP_PARENT walk). So when
we start caching fs->root in path_walk(), it'll need a different
treatment.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namei.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/fs/namei.c b/fs/namei.c index c82805d088e1..895733efc6b9 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1017,9 +1017,7 @@ static int path_walk(const char *name, struct nameidata *nd) return link_path_walk(name, nd); } -/* Returns 0 and nd will be valid on success; Retuns error, otherwise. */ -static int do_path_lookup(int dfd, const char *name, - unsigned int flags, struct nameidata *nd) +static int path_init(int dfd, const char *name, unsigned int flags, struct nameidata *nd) { int retval = 0; int fput_needed; @@ -1063,17 +1061,25 @@ static int do_path_lookup(int dfd, const char *name, fput_light(file, fput_needed); } + return 0; - retval = path_walk(name, nd); +fput_fail: + fput_light(file, fput_needed); +out_fail: + return retval; +} + +/* Returns 0 and nd will be valid on success; Retuns error, otherwise. */ +static int do_path_lookup(int dfd, const char *name, + unsigned int flags, struct nameidata *nd) +{ + int retval = path_init(dfd, name, flags, nd); + if (!retval) + retval = path_walk(name, nd); if (unlikely(!retval && !audit_dummy_context() && nd->path.dentry && nd->path.dentry->d_inode)) audit_inode(name, nd->path.dentry); -out_fail: return retval; - -fput_fail: - fput_light(file, fput_needed); - goto out_fail; } int path_lookup(const char *name, unsigned int flags, @@ -1676,9 +1682,14 @@ struct file *do_filp_open(int dfd, const char *pathname, /* * Create - we need to know the parent. */ - error = do_path_lookup(dfd, pathname, LOOKUP_PARENT, &nd); + error = path_init(dfd, pathname, LOOKUP_PARENT, &nd); if (error) return ERR_PTR(error); + error = path_walk(pathname, &nd); + if (error) + return ERR_PTR(error); + if (unlikely(!audit_dummy_context())) + audit_inode(pathname, nd.path.dentry); /* * We have the parent and last component. First of all, check |