userns: Store uid and gid values in struct cred with kuid_t and kgid_t types

cred.h and a few trivial users of struct cred are changed.  The rest of the users
of struct cred are left for other patches as there are too many changes to make
in one go and leave the change reviewable.  If the user namespace is disabled and
CONFIG_UIDGID_STRICT_TYPE_CHECKS are disabled the code will contiue to compile
and behave correctly.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 0ab3cda4a774..fac0579258fc 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -123,14 +123,14 @@ struct cred {
 #define CRED_MAGIC      0x43736564
 #define CRED_MAGIC_DEAD 0x44656144
 #endif
-        uid_t           uid;            /* real UID of the task */
-        gid_t           gid;            /* real GID of the task */
-        uid_t           suid;           /* saved UID of the task */
-        gid_t           sgid;           /* saved GID of the task */
-        uid_t           euid;           /* effective UID of the task */
-        gid_t           egid;           /* effective GID of the task */
-        uid_t           fsuid;          /* UID for VFS ops */
-        gid_t           fsgid;          /* GID for VFS ops */
+        kuid_t          uid;            /* real UID of the task */
+        kgid_t          gid;            /* real GID of the task */
+        kuid_t          suid;           /* saved UID of the task */
+        kgid_t          sgid;           /* saved GID of the task */
+        kuid_t          euid;           /* effective UID of the task */
+        kgid_t          egid;           /* effective GID of the task */
+        kuid_t          fsuid;          /* UID for VFS ops */
+        kgid_t          fsgid;          /* GID for VFS ops */
         unsigned        securebits;     /* SUID-less security management */
         kernel_cap_t    cap_inheritable; /* caps our children can inherit */
         kernel_cap_t    cap_permitted;  /* caps we're permitted */