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According to POSIX and Linux implementation the alarm() system call

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is always successfull.
So, ignore any errors and return 0 as a Linux do.

XXX. Unlike POSIX, Linux in case when the invalid seconds value specified
always return 0, so in that case Linux does not return proper remining time.

MFC after:	1 week
This commit is contained in:
Dmitry Chagin 2016-03-08 15:12:49 +00:00
parent 9f4e66afb9
commit 15c3b371e2
1 changed files with 1 additions and 4 deletions
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5
sys/compat/linux/linux_misc.c
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@ -191,7 +191,6 @@ linux_alarm(struct thread *td, struct linux_alarm_args *args)
{
struct itimerval it, old_it;
u_int secs;
int error;
#ifdef DEBUG
if (ldebug(alarm))
@ -207,9 +206,7 @@ linux_alarm(struct thread *td, struct linux_alarm_args *args)
it.it_value.tv_usec = 0;
it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 0;
error = kern_setitimer(td, ITIMER_REAL, &it, &old_it);
if (error)
return (error);
kern_setitimer(td, ITIMER_REAL, &it, &old_it);
if (timevalisset(&old_it.it_value)) {
if (old_it.it_value.tv_usec != 0)
old_it.it_value.tv_sec++;