Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / kernel / groups.c

diff --git a/kernel/groups.c b/kernel/groups.c
index 451698f..664411f 100644 (file)
--- a/kernel/groups.c
+++ b/kernel/groups.c
@@ -6,6 +6,7 @@
 #include <linux/slab.h>
 #include <linux/security.h>
 #include <linux/syscalls.h>
+#include <linux/user_namespace.h>
 #include <asm/uaccess.h>
 
 /* init to 2 - one for init_task, one to ensure it is never freed */
@@ -213,6 +214,14 @@ out:
        return i;
 }
 
+bool may_setgroups(void)
+{
+       struct user_namespace *user_ns = current_user_ns();
+
+       return ns_capable(user_ns, CAP_SETGID) &&
+               userns_may_setgroups(user_ns);
+}
+
 /*
  *     SMP: Our groups are copy-on-write. We can set them safely
  *     without another task interfering.
@@ -223,7 +232,7 @@ SYSCALL_DEFINE2(setgroups, int, gidsetsize, gid_t __user *, grouplist)
        struct group_info *group_info;
        int retval;
 
-       if (!ns_capable(current_user_ns(), CAP_SETGID))
+       if (!may_setgroups())
                return -EPERM;
        if ((unsigned)gidsetsize > NGROUPS_MAX)
                return -EINVAL;