sunrpc: Use gid_valid to test for gid != INVALID_GID
In auth unix there are a couple of places INVALID_GID is used a
sentinel to mark the end of uc_gids array. Use gid_valid
as a type safe way to verify we have not hit the end of
valid data in the array.
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 55b6ca6..c434fde 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -131,8 +131,7 @@
for (i = 0; i < groups ; i++)
if (!gid_eq(cred->uc_gids[i], GROUP_AT(acred->group_info, i)))
return 0;
- if (groups < NFS_NGROUPS &&
- cred->uc_gids[groups] != INVALID_GID)
+ if (groups < NFS_NGROUPS && gid_valid(cred->uc_gids[groups]))
return 0;
return 1;
}
@@ -161,7 +160,7 @@
*p++ = htonl((u32) cred->uc_uid);
*p++ = htonl((u32) cred->uc_gid);
hold = p++;
- for (i = 0; i < 16 && cred->uc_gids[i] != INVALID_GID; i++)
+ for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
*p++ = htonl((u32) cred->uc_gids[i]);
*hold = htonl(p - hold - 1); /* gid array length */
*base = htonl((p - base - 1) << 2); /* cred length */