The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=fc13cbaf6942af73d50659e4728b6b1299a0d028
commit fc13cbaf6942af73d50659e4728b6b1299a0d028 Author: Konstantin Belousov <[email protected]> AuthorDate: 2021-06-07 14:59:41 +0000 Commit: Konstantin Belousov <[email protected]> CommitDate: 2021-06-22 01:45:31 +0000 sigwait: add comment explaining EINTR/ERESTART details (cherry picked from commit acced8b043c5df0ebd51934bca6dcae3322cf890) --- sys/kern/kern_sig.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index a2709f38c5cb..1cab25aa5a40 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -1167,6 +1167,13 @@ sys_sigwait(struct thread *td, struct sigwait_args *uap) error = kern_sigtimedwait(td, set, &ksi, NULL); if (error) { + /* + * sigwait() function shall not return EINTR, but + * the syscall does. Non-ancient libc provides the + * wrapper which hides EINTR. Otherwise, EINTR return + * is used by libthr to handle required cancellation + * point in the sigwait(). + */ if (error == EINTR && td->td_proc->p_osrel < P_OSREL_SIGWAIT) return (ERESTART); td->td_retval[0] = error; _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
