[PATCH] Return real errno from execve in ____call_usermodehelper

[Björn Steinbrink]

If execve fails in ____call_usermodehelper we treat its return value as
error code, but as execve is a syscall, we actually want -errno there.

Signed-off-by: Björn Steinbrink <B.Steinbrink@xxxxxx>

--

diff --git a/kernel/kmod.c b/kernel/kmod.c
index 1d32def..865abc0 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -149,8 +149,10 @@ static int ____call_usermodehelper(void 
 	set_cpus_allowed(current, CPU_MASK_ALL);
 
 	retval = -EPERM;
-	if (current->fs->root)
-		retval = execve(sub_info->path, sub_info->argv,sub_info->envp);
+	if (current->fs->root) {
+		execve(sub_info->path, sub_info->argv, sub_info->envp);
+		retval = -errno;
+	}
 
 	/* Exec failed? */
 	sub_info->retval = retval;

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