> > I can't get /bin/sh to trap the SIGHUP signal on amd64 NetBSD
> > 6.1_STABLE. Does anyone know why?
On a first glance, this seems to be bourne-shell specific. At least ksh and
bash both behave correctly.
Looking at the source, this part is likely what causes SIGINT to work:
(from src/bin/sh/jobs.c in the `dowait` function, note that this is -current
source)
| do {
| pid = waitproc(flags & WBLOCK, job, &status);
| TRACE(("wait returns pid %d, status %d\n", pid, status));
| } while (pid == -1 && errno == EINTR && gotsig[SIGINT - 1] == 0);
Note the special case granting SIGINT to exit the loop when waitproc (i.e.
waitpid(2)) comes back with EINTR, while other signals are effectively ignored.
