userns: Convert sysctl permission checks to use kuid and kgids.
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 21d836f..3476bca 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -371,9 +371,9 @@
static int test_perm(int mode, int op)
{
- if (!current_euid())
+ if (uid_eq(current_euid(), GLOBAL_ROOT_UID))
mode >>= 6;
- else if (in_egroup_p(0))
+ else if (in_egroup_p(GLOBAL_ROOT_GID))
mode >>= 3;
if ((op & ~mode & (MAY_READ|MAY_WRITE|MAY_EXEC)) == 0)
return 0;
diff --git a/init/Kconfig b/init/Kconfig
index 7bebe91..be587651 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -948,7 +948,6 @@
depends on NTFS_FS = n
depends on OCFS2_FS = n
depends on OMFS_FS = n
- depends on PROC_SYSCTL = n
depends on QNX4FS_FS = n
depends on QNX6FS_FS = n
depends on REISERFS_FS = n
