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vfs: do_last() common post lookup 

Now the post lookup code can be shared between O_CREAT and plain opens since
they are essentially the same.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Miklos Szeredi 2012-05-21 17:30:14 +02:00 committed by Al Viro
parent d7fdd7f6e1
commit 5f5daac12a
1 changed files with 3 additions and 31 deletions
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34
fs/namei.c
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@ -2249,37 +2249,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
inode = path->dentry->d_inode;
}
error = -ENOENT;
if (!inode) {
path_to_nameidata(path, nd);
goto exit;
}
if (should_follow_link(inode, !symlink_ok)) {
if (nd->flags & LOOKUP_RCU) {
if (unlikely(unlazy_walk(nd, path->dentry))) {
error = -ECHILD;
goto exit;
}
}
BUG_ON(inode != path->dentry->d_inode);
return NULL;
}
path_to_nameidata(path, nd);
nd->inode = inode;
/* sayonara */
error = complete_walk(nd);
if (error)
return ERR_PTR(error);
error = -ENOTDIR;
if (nd->flags & LOOKUP_DIRECTORY) {
if (!nd->inode->i_op->lookup)
goto exit;
}
audit_inode(pathname, nd->path.dentry);
goto ok;
goto finish_lookup;
}
/* create side of things */
@ -2360,6 +2330,8 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
BUG_ON(nd->flags & LOOKUP_RCU);
inode = path->dentry->d_inode;
finish_lookup:
/* we _can_ be in RCU mode here */
error = -ENOENT;
if (!inode) {
path_to_nameidata(path, nd);