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path_init(): don't bother with checking MAY_EXEC for LOOKUP_ROOT 

we'll hit that check in link_path_walk() anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Al Viro 2017-04-15 17:29:14 -04:00
parent 159b095628
commit 93893862fb
1 changed files with 2 additions and 8 deletions
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10
fs/namei.c
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@ -2142,7 +2142,6 @@ OK:
static const char *path_init(struct nameidata *nd, unsigned flags)
{
int retval = 0;
const char *s = nd->name->name;
if (!*s)
@ -2154,13 +2153,8 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
if (flags & LOOKUP_ROOT) {
struct dentry *root = nd->root.dentry;
struct inode *inode = root->d_inode;
if (*s) {
if (!d_can_lookup(root))
return ERR_PTR(-ENOTDIR);
retval = inode_permission(inode, MAY_EXEC);
if (retval)
return ERR_PTR(retval);
}
if (*s && unlikely(!d_can_lookup(root)))
return ERR_PTR(-ENOTDIR);
nd->path = nd->root;
nd->inode = inode;
if (flags & LOOKUP_RCU) {