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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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7
net/sunrpc/auth_gss/svcauth_gss.c
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@@ -41,6 +41,7 @@
#include <linux/types.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/user_namespace.h>
#include <linux/sunrpc/auth_gss.h>
#include <linux/sunrpc/gss_err.h>
@@ -470,9 +471,13 @@ static int rsc_parse(struct cache_detail *cd,
status = -EINVAL;
for (i=0; i<N; i++) {
gid_t gid;
kgid_t kgid;
if (get_int(&mesg, &gid))
goto out;
GROUP_AT(rsci.cred.cr_group_info, i) = gid;
kgid = make_kgid(&init_user_ns, gid);
if (!gid_valid(kgid))
goto out;
GROUP_AT(rsci.cred.cr_group_info, i) = kgid;
}
/* mech name */