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First attempt at proper process group handling.

This commit is contained in:
Ned T. Crigler 2004-06-23 04:48:07 +00:00
parent 79b7d83ede
commit 302917ca33
1 changed files with 30 additions and 1 deletions
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31
master.c
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@ -201,6 +201,35 @@ control_activity(int s)
*(p->pprev) = p;
}
/* Send a signal to the slave side of a pseudo-terminal. */
static void
killpty(struct pty *pty, int sig)
{
pid_t pgrp = -1;
#ifdef TIOCSIGNAL
if (ioctl(pty->fd, TIOCSIGNAL, sig) >= 0)
return;
#endif
#ifdef TIOCSIG
if (ioctl(pty->fd, TIOCSIG, sig) >= 0)
return;
#endif
#ifdef TIOCGPGRP
#ifdef BROKEN_MASTER
if (ioctl(pty->slave, TIOCGPGRP, &pgrp) >= 0 && pgrp != -1 &&
kill(-pgrp, sig) >= 0)
return;
#endif
if (ioctl(pty->fd, TIOCGPGRP, &pgrp) >= 0 && pgrp != -1 &&
kill(-pgrp, sig) >= 0)
return;
#endif
/* Fallback using the child's pid. */
kill(-pty->pid, sig);
}
/* Process activity from a client. */
static void
client_activity(struct client *p)
@ -241,7 +270,7 @@ client_activity(struct client *p)
ioctl(the_pty.fd, TIOCSWINSZ, &the_pty.ws);
}
else
kill(-the_pty.pid, SIGWINCH);
killpty(&the_pty, SIGWINCH);
}
else if (pkt.type == MSG_DETACH)
p->attached = 0;