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ipc: msg: Make msg_queue timestamps y2038 safe

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time_t is not y2038 safe. Replace all uses of
time_t by y2038 safe time64_t.

Similarly, replace the calls to get_seconds() with
y2038 safe ktime_get_real_seconds().
Note that this preserves fast access on 64 bit systems,
but 32 bit systems need sequence counters.

The syscall interfaces themselves are not changed as part of
the patch. They will be part of a different series.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Deepa Dinamani
2017-08-02 19:51:12 -07:00
committed by Al Viro
parent b904772638
commit 50578ea97a
2 changed files with 7 additions and 6 deletions
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6
ipc/msg.c
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@@ -133,7 +133,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
}
msq->q_stime = msq->q_rtime = 0;
msq->q_ctime = get_seconds();
msq->q_ctime = ktime_get_real_seconds();
msq->q_cbytes = msq->q_qnum = 0;
msq->q_qbytes = ns->msg_ctlmnb;
msq->q_lspid = msq->q_lrpid = 0;
@@ -406,7 +406,7 @@ static int msgctl_down(struct ipc_namespace *ns, int msqid, int cmd,
msq->q_qbytes = msqid64->msg_qbytes;
msq->q_ctime = get_seconds();
msq->q_ctime = ktime_get_real_seconds();
/*
* Sleeping receivers might be excluded by
* stricter permissions.
@@ -1181,7 +1181,7 @@ static int sysvipc_msg_proc_show(struct seq_file *s, void *it)
struct msg_queue *msq = it;
seq_printf(s,
"%10d %10d %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %10lu %10lu %10lu\n",
"%10d %10d %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %10llu %10llu %10llu\n",
msq->q_perm.key,
msq->q_perm.id,
msq->q_perm.mode,