[PATCH] sanitize __user_walk_fd() et.al.
* do not pass nameidata; struct path is all the callers want.
* switch to new helpers:
user_path_at(dfd, pathname, flags, &path)
user_path(pathname, &path)
user_lpath(pathname, &path)
user_path_dir(pathname, &path) (fail if not a directory)
The last 3 are trivial macro wrappers for the first one.
* remove nameidata in callers.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/parisc/hpux/sys_hpux.c b/arch/parisc/hpux/sys_hpux.c
index be255eb..18072e0 100644
--- a/arch/parisc/hpux/sys_hpux.c
+++ b/arch/parisc/hpux/sys_hpux.c
@@ -210,19 +210,19 @@
}
/* hpux statfs */
-asmlinkage long hpux_statfs(const char __user *path,
+asmlinkage long hpux_statfs(const char __user *pathname,
struct hpux_statfs __user *buf)
{
- struct nameidata nd;
+ struct path path;
int error;
- error = user_path_walk(path, &nd);
+ error = user_path(pathname, &path);
if (!error) {
struct hpux_statfs tmp;
- error = vfs_statfs_hpux(nd.path.dentry, &tmp);
+ error = vfs_statfs_hpux(path.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
- path_put(&nd.path);
+ path_put(&path);
}
return error;
}