From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
The typical setclientid or exchange_id will probably be performed with a
credential that maps to either root or nobody, so comparing just uid's
is unlikely to be useful. So, use everything else we can get our hands
on.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 625ec80..f6d2a55 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1164,11 +1164,31 @@ same_clid(clientid_t *cl1, clientid_t *cl2)
return (cl1->cl_boot == cl2->cl_boot) && (cl1->cl_id == cl2->cl_id);
}
+static bool groups_equal(struct group_info *g1, struct group_info *g2)
+{
+ int i;
+
+ if (g1->ngroups != g2->ngroups)
+ return false;
+ for (i=0; i<g1->ngroups; i++)
+ if (GROUP_AT(g1, i) != GROUP_AT(g2, i))
+ return false;
+ return true;
+}
+
/* XXX what about NGROUP */
static int
same_creds(struct svc_cred *cr1, struct svc_cred *cr2)
{
- return cr1->cr_uid == cr2->cr_uid;
+ if ((cr1->cr_uid != cr2->cr_uid)
+ || (cr1->cr_gid != cr2->cr_gid)
+ || !groups_equal(cr1->cr_group_info, cr2->cr_group_info))
+ return false;
+ if (cr1->cr_principal == cr2->cr_principal)
+ return true;
+ if (!cr1->cr_principal || !cr2->cr_principal)
+ return false;
+ return 0 == strcmp(cr1->cr_principal, cr1->cr_principal);
}
static void gen_clid(struct nfs4_client *clp)
--
1.7.9.5
--
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