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userns: Convert group_info values from gid_t to kgid_t.

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As a first step to converting struct cred to be all kuid_t and kgid_t
values convert the group values stored in group_info to always be
kgid_t values.   Unless user namespaces are used this change should
have no effect.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2011-11-14 15:56:38 -08:00
parent 22d917d80e
commit ae2975bc34
12 changed files with 104 additions and 49 deletions
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5
fs/nfsd/auth.c
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@@ -1,6 +1,7 @@
/* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */
#include <linux/sched.h>
#include <linux/user_namespace.h>
#include "nfsd.h"
#include "auth.h"
@@ -56,8 +57,8 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
goto oom;
for (i = 0; i < rqgi->ngroups; i++) {
if (!GROUP_AT(rqgi, i))
GROUP_AT(gi, i) = exp->ex_anon_gid;
if (gid_eq(GLOBAL_ROOT_GID, GROUP_AT(rqgi, i)))
GROUP_AT(gi, i) = make_kgid(&init_user_ns, exp->ex_anon_gid);
else
GROUP_AT(gi, i) = GROUP_AT(rqgi, i);
}