userns: Convert ipc to use kuid and kgid where appropriate
- Store the ipc owner and creator with a kuid
- Store the ipc group and the crators group with a kgid.
- Add error handling to ipc_update_perms, allowing it to
fail if the uids and gids can not be converted to kuids
or kgids.
- Modify the proc files to display the ipc creator and
owner in the user namespace of the opener of the proc file.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
index 30e8161..ca833fd 100644
--- a/include/linux/ipc.h
+++ b/include/linux/ipc.h
@@ -79,6 +79,7 @@
#ifdef __KERNEL__
#include <linux/spinlock.h>
+#include <linux/uidgid.h>
#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */
@@ -89,10 +90,10 @@
int deleted;
int id;
key_t key;
- uid_t uid;
- gid_t gid;
- uid_t cuid;
- gid_t cgid;
+ kuid_t uid;
+ kgid_t gid;
+ kuid_t cuid;
+ kgid_t cgid;
umode_t mode;
unsigned long seq;
void *security;