Commit 9856fa1b authored by Al Viro's avatar Al Viro

pull handling of . and .. into inlined helper

getting LOOKUP_RCU checks out of link_path_walk()...
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 7bc055d1
......@@ -1318,6 +1318,18 @@ static inline int may_lookup(struct nameidata *nd)
return exec_permission(nd->inode, 0);
}
static inline int handle_dots(struct nameidata *nd, int type)
{
if (type == LAST_DOTDOT) {
if (nd->flags & LOOKUP_RCU) {
if (follow_dotdot_rcu(nd))
return -ECHILD;
} else
follow_dotdot(nd);
}
return 0;
}
/*
* Name resolution.
* This is the basic name resolution function, turning a pathname into
......@@ -1393,13 +1405,8 @@ static int link_path_walk(const char *name, struct nameidata *nd)
* parent relationships.
*/
if (unlikely(type != LAST_NORM)) {
if (type == LAST_DOTDOT) {
if (nd->flags & LOOKUP_RCU) {
if (follow_dotdot_rcu(nd))
if (handle_dots(nd, type))
return -ECHILD;
} else
follow_dotdot(nd);
}
continue;
}
......@@ -1434,13 +1441,8 @@ static int link_path_walk(const char *name, struct nameidata *nd)
if (lookup_flags & LOOKUP_PARENT)
goto lookup_parent;
if (unlikely(type != LAST_NORM)) {
if (type == LAST_DOTDOT) {
if (nd->flags & LOOKUP_RCU) {
if (follow_dotdot_rcu(nd))
if (handle_dots(nd, type))
return -ECHILD;
} else
follow_dotdot(nd);
}
return 0;
}
err = do_lookup(nd, &this, &next, &inode);
......
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