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From: Arnd Bergmann <arnd@arndb.de>
To: y2038@lists.linaro.org, linux-kernel@vger.kernel.org
Cc: linux-api@vger.kernel.org, linux-arch@vger.kernel.org,
	libc-alpha@sourceware.org, tglx@linutronix.de,
	deepa.kernel@gmail.com, viro@zeniv.linux.org.uk,
	ebiederm@xmission.com, albert.aribaud@3adev.fr,
	linux-s390@vger.kernel.org, schwidefsky@de.ibm.com,
	x86@kernel.org, catalin.marinas@arm.com, will.deacon@arm.com,
	linux-mips@linux-mips.org, jhogan@kernel.org,
	ralf@linux-mips.org, linuxppc-dev@lists.ozlabs.org,
	sparclinux@vger.kernel.org, zackw@panix.com, noloader@gmail.com,
	Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH v4 12/16] y2038: ipc: Use ktime_get_real_seconds consistently
Date: Wed, 25 Apr 2018 17:06:02 +0200	[thread overview]
Message-ID: <20180425150606.954771-12-arnd@arndb.de> (raw)
In-Reply-To: <20180425132242.1500539-1-arnd@arndb.de>

In some places, we still used get_seconds() instead of
ktime_get_real_seconds(), and I'm changing the remaining ones now to
all use ktime_get_real_seconds() so we use the full available range for
timestamps instead of overflowing the 'unsigned long' return value in
year 2106 on 32-bit kernels.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 ipc/msg.c | 6 +++---
 ipc/sem.c | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/ipc/msg.c b/ipc/msg.c
index 56fd1c73eedc..574f76c9a2ff 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -758,7 +758,7 @@ static inline int pipelined_send(struct msg_queue *msq, struct msg_msg *msg,
 				WRITE_ONCE(msr->r_msg, ERR_PTR(-E2BIG));
 			} else {
 				ipc_update_pid(&msq->q_lrpid, task_pid(msr->r_tsk));
-				msq->q_rtime = get_seconds();
+				msq->q_rtime = ktime_get_real_seconds();
 
 				wake_q_add(wake_q, msr->r_tsk);
 				WRITE_ONCE(msr->r_msg, msg);
@@ -859,7 +859,7 @@ static long do_msgsnd(int msqid, long mtype, void __user *mtext,
 	}
 
 	ipc_update_pid(&msq->q_lspid, task_tgid(current));
-	msq->q_stime = get_seconds();
+	msq->q_stime = ktime_get_real_seconds();
 
 	if (!pipelined_send(msq, msg, &wake_q)) {
 		/* no one is waiting for this message, enqueue it */
@@ -1087,7 +1087,7 @@ static long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, in
 
 			list_del(&msg->m_list);
 			msq->q_qnum--;
-			msq->q_rtime = get_seconds();
+			msq->q_rtime = ktime_get_real_seconds();
 			ipc_update_pid(&msq->q_lrpid, task_tgid(current));
 			msq->q_cbytes -= msg->m_ts;
 			atomic_sub(msg->m_ts, &ns->msg_bytes);
diff --git a/ipc/sem.c b/ipc/sem.c
index 06be75d9217a..c6a8a971769d 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -104,7 +104,7 @@ struct sem {
 					/* that alter the semaphore */
 	struct list_head pending_const; /* pending single-sop operations */
 					/* that do not alter the semaphore*/
-	time_t	sem_otime;	/* candidate for sem_otime */
+	time64_t	 sem_otime;	/* candidate for sem_otime */
 } ____cacheline_aligned_in_smp;
 
 /* One sem_array data structure for each set of semaphores in the system. */
@@ -984,10 +984,10 @@ static int update_queue(struct sem_array *sma, int semnum, struct wake_q_head *w
 static void set_semotime(struct sem_array *sma, struct sembuf *sops)
 {
 	if (sops == NULL) {
-		sma->sems[0].sem_otime = get_seconds();
+		sma->sems[0].sem_otime = ktime_get_real_seconds();
 	} else {
 		sma->sems[sops[0].sem_num].sem_otime =
-							get_seconds();
+						ktime_get_real_seconds();
 	}
 }
 
-- 
2.9.0


  parent reply	other threads:[~2018-04-25 15:09 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-25 13:22 [GIT PULL, PATCH v4 00/16] y2038: IPC system call conversion Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 01/16] y2038: asm-generic: Extend sysvipc data structures Arnd Bergmann
2018-04-25 15:07   ` Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 02/16] y2038: x86: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 03/16] y2038: alpha: Remove unneeded ipc uapi header files Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 04/16] y2038: ia64: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 05/16] y2038: s390: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 06/16] y2038: arm64: Extend sysvipc compat data structures Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 07/16] y2038: mips: Extend sysvipc " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 08/16] y2038: parisc: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 09/16] y2038: sparc: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 10/16] y2038: powerpc: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 11/16] y2038: xtensa: " Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 12/16] y2038: ipc: Use ktime_get_real_seconds consistently Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 13/16] y2038: ipc: Report long times to user space Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 14/16] y2038: ipc: Use __kernel_timespec Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 15/16] y2038: ipc: Enable COMPAT_32BIT_TIME Arnd Bergmann
2018-04-25 13:22 ` [PATCH v4 16/16] y2038: ipc: Redirect ipc(SEMTIMEDOP, ...) to compat_ksys_semtimedop Arnd Bergmann
2018-04-25 15:01 ` [PATCH v4 01/16] y2038: asm-generic: Extend sysvipc data structures Arnd Bergmann
2018-04-25 15:01 ` [PATCH v4 02/16] y2038: x86: " Arnd Bergmann
2018-04-25 15:01 ` [PATCH v4 03/16] y2038: alpha: Remove unneeded ipc uapi header files Arnd Bergmann
2018-04-25 15:01 ` [PATCH v4 04/16] y2038: ia64: " Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 01/16] y2038: asm-generic: Extend sysvipc data structures Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 02/16] y2038: x86: " Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 03/16] y2038: alpha: Remove unneeded ipc uapi header files Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 04/16] y2038: ia64: " Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 05/16] y2038: s390: " Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 06/16] y2038: arm64: Extend sysvipc compat data structures Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 07/16] y2038: mips: Extend sysvipc " Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 08/16] y2038: parisc: " Arnd Bergmann
2018-04-25 15:05 ` [PATCH v4 09/16] y2038: sparc: " Arnd Bergmann
2018-04-25 15:06 ` [PATCH v4 10/16] y2038: powerpc: " Arnd Bergmann
2018-04-25 15:06 ` [PATCH v4 11/16] y2038: xtensa: " Arnd Bergmann
2018-04-25 15:06 ` Arnd Bergmann [this message]
2018-04-25 15:06 ` [PATCH v4 13/16] y2038: ipc: Report long times to user space Arnd Bergmann
2018-04-25 15:06 ` [PATCH v4 14/16] y2038: ipc: Use __kernel_timespec Arnd Bergmann
2018-04-25 15:06 ` [PATCH v4 15/16] y2038: ipc: Enable COMPAT_32BIT_TIME Arnd Bergmann
2018-04-25 15:06 ` [PATCH v4 16/16] y2038: ipc: Redirect ipc(SEMTIMEDOP, ...) to compat_ksys_semtimedop Arnd Bergmann

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