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

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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>
This commit is contained in:
Eric W. Biederman 2012-02-08 07:00:08 -08:00
parent ae2975bc34
commit 078de5f706
10 changed files with 59 additions and 62 deletions
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3
security/commoncap.c
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@ -77,8 +77,7 @@ int cap_capable(const struct cred *cred, struct user_namespace *targ_ns,
{
for (;;) {
/* The owner of the user namespace has all caps. */
if (targ_ns != &init_user_ns && uid_eq(targ_ns->owner,
make_kuid(cred->user_ns, cred->euid)))
if (targ_ns != &init_user_ns && uid_eq(targ_ns->owner, cred->euid))
return 0;
/* Do we have the necessary capabilities? */