[PATCH] signalfd: fill in ssi_int for posix timers and message queues
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From: Nathan Lynch on 2 Jul 2010 20:40 If signalfd is used to consume a signal generated by a POSIX interval timer or POSIX message queue, the ssi_int field does not reflect the data (sigevent->sigev_value) supplied to timer_create(2) or mq_notify(3). (The ssi_ptr field, however, is filled in.) This behavior differs from signalfd's treatment of sigqueue-generated signals -- see the default case in signalfd_copyinfo. It also gives results that differ from the case when a signal is handled conventionally via a sigaction-registered handler. So, set signalfd_siginfo->ssi_int in the remaining cases (__SI_TIMER, __SI_MESGQ) where ssi_ptr is set. Signed-off-by: Nathan Lynch <ntl(a)pobox.com> --- fs/signalfd.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/fs/signalfd.c b/fs/signalfd.c index f329849..1c5a6ad 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -88,6 +88,7 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, err |= __put_user(kinfo->si_tid, &uinfo->ssi_tid); err |= __put_user(kinfo->si_overrun, &uinfo->ssi_overrun); err |= __put_user((long) kinfo->si_ptr, &uinfo->ssi_ptr); + err |= __put_user(kinfo->si_int, &uinfo->ssi_int); break; case __SI_POLL: err |= __put_user(kinfo->si_band, &uinfo->ssi_band); @@ -111,6 +112,7 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, err |= __put_user(kinfo->si_pid, &uinfo->ssi_pid); err |= __put_user(kinfo->si_uid, &uinfo->ssi_uid); err |= __put_user((long) kinfo->si_ptr, &uinfo->ssi_ptr); + err |= __put_user(kinfo->si_int, &uinfo->ssi_int); break; default: /* -- 1.6.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |