[d_path 4/7] Make getcwd() only return valid paths

[Andreas Gruenbacher]

Make getcwd() fail with -ENOENT if the current working directory is
disconnected: the process is not asking for some previous name of that
directory but for the current name; returning a path meaningless in the
context of that process makes no sense.

Signed-off-by: Andreas Gruenbacher <[EMAIL PROTECTED]>

---
 fs/dcache.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1910,10 +1910,12 @@ asmlinkage long sys_getcwd(char __user *
        read_unlock(&current->fs->lock);
 
        cwd = __d_path(pwd, pwdmnt, root, rootmnt, page, PAGE_SIZE, 1);
-       cwd = __connect_d_path(cwd, page);
        error = PTR_ERR(cwd);
        if (IS_ERR(cwd))
                goto out;
+       error = -ENOENT;
+       if (*cwd != '/')
+               goto out;
 
        error = -ERANGE;
        len = PAGE_SIZE + page - cwd;

-- 
Andreas Gruenbacher <[EMAIL PROTECTED]>
SUSE Labs, SUSE LINUX Products GmbH
GF: Markus Rex, HRB 16746 (AG Nuernberg)

GPG: AF77 FAD1 1819 D442 400F  4BC8 409A 6903 4FDD EE02

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/