linux-kernel - [PATCH v2 2/2] security: keys: Replace time_t with time64_t for struct key_preparsed

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <0f08ea5fb66780d40f104244d5fcaa8c610ffe30.1505960744.git.baolin.wang@linaro.org>
Date:   Thu, 21 Sep 2017 10:32:03 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     dhowells@...hat.com
Cc:     james.l.morris@...cle.com, serge@...lyn.com, arnd@...db.de,
        broonie@...nel.org, keyrings@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, baolin.wang@...aro.org
Subject: [PATCH v2 2/2] security: keys: Replace time_t with time64_t for struct key_preparsed_payload

The 'struct key_preparsed_payload' will use 'time_t' which we will
try to remove in the kernel, since 'time_t' is not year 2038 safe on
32bits systems.

Thus this patch replaces 'time_t' with 'time64_t' which is year 2038
safe on 32 bits system for 'struct key_preparsed_payload', moreover
we should use the 'TIME64_MAX' macro to initialize the 'time64_t'
type variable.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Reviewed-by: Arnd Bergmann <arnd@...db.de>
---
 include/linux/key-type.h |    2 +-
 security/keys/key.c      |    8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/key-type.h b/include/linux/key-type.h
index 9520fc3..05d8fb5 100644
--- a/include/linux/key-type.h
+++ b/include/linux/key-type.h
@@ -44,7 +44,7 @@ struct key_preparsed_payload {
 	const void	*data;		/* Raw data */
 	size_t		datalen;	/* Raw datalen */
 	size_t		quotalen;	/* Quota length for proposed payload */
-	time_t		expiry;		/* Expiry time of key */
+	time64_t	expiry;		/* Expiry time of key */
 } __randomize_layout;
 
 typedef int (*request_key_actor_t)(struct key_construction *key,
diff --git a/security/keys/key.c b/security/keys/key.c
index 291a67c..d5c8941 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -446,7 +446,7 @@ static int __key_instantiate_and_link(struct key *key,
 			if (authkey)
 				key_revoke(authkey);
 
-			if (prep->expiry != TIME_T_MAX) {
+			if (prep->expiry != TIME64_MAX) {
 				key->expiry = prep->expiry;
 				key_schedule_gc(prep->expiry + key_gc_delay);
 			}
@@ -492,7 +492,7 @@ int key_instantiate_and_link(struct key *key,
 	prep.data = data;
 	prep.datalen = datalen;
 	prep.quotalen = key->type->def_datalen;
-	prep.expiry = TIME_T_MAX;
+	prep.expiry = TIME64_MAX;
 	if (key->type->preparse) {
 		ret = key->type->preparse(&prep);
 		if (ret < 0)
@@ -834,7 +834,7 @@ key_ref_t key_create_or_update(key_ref_t keyring_ref,
 	prep.data = payload;
 	prep.datalen = plen;
 	prep.quotalen = index_key.type->def_datalen;
-	prep.expiry = TIME_T_MAX;
+	prep.expiry = TIME64_MAX;
 	if (index_key.type->preparse) {
 		ret = index_key.type->preparse(&prep);
 		if (ret < 0) {
@@ -968,7 +968,7 @@ int key_update(key_ref_t key_ref, const void *payload, size_t plen)
 	prep.data = payload;
 	prep.datalen = plen;
 	prep.quotalen = key->type->def_datalen;
-	prep.expiry = TIME_T_MAX;
+	prep.expiry = TIME64_MAX;
 	if (key->type->preparse) {
 		ret = key->type->preparse(&prep);
 		if (ret < 0)
-- 
1.7.9.5