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- Date: Sat, 26 Feb 1994 23:37:03 -0500
- From: "Nicholas S Castellano" <entropy@terminator.rs.itd.umich.edu>
- To: mint@terminator.rs.itd.umich.edu
- Subject: Job control fix
-
- Here's a patch to fix job control handling. Don't be surprised if
- you get some offsets while applying the patch,
-
- tty.c: ++entropy@terminator.rs.itd.umich.edu
- Fix SIGTTIN/SIGTTOU job control.
-
- --- 1.10.1.3 1994/02/27 04:03:08
- +++ tty.c 1994/02/27 04:14:34
- @@ -658,8 +658,16 @@
- }
-
- /* job control check */
- -
- - if (tty->pgrp && tty->pgrp != curproc->pgrp) {
- +/*
- +entropy: only do the job control if SIGTTIN is neither blocked nor ignored,
- +and only for the controlling tty (IEEE 1003.1-1990 7.1.1.4 70-78).
- +BUG: if the process group is orphaned or SIGTTIN *is* blocked or ignored,
- +we should return EIO instead of signalling.
- +*/
- +
- + if ((tty->pgrp && tty->pgrp != curproc->pgrp) &&
- + (f->fc.dev == curproc->control->fc.dev) &&
- + (f->fc.index == curproc->control->fc.index)) {
- TRACE(("job control: tty pgrp is %d proc pgrp is %d",
- tty->pgrp, curproc->pgrp));
- killgroup(curproc->pgrp, SIGTTIN);
- @@ -787,8 +795,18 @@
- }
- /* job control checks */
- /* AKP: added T_TOSTOP; don't stop BG output if T_TOSTOP is clear */
- +/*
- +entropy: only do the job control if SIGTTOU is neither blocked nor ignored,
- +and only for the controlling tty (IEEE 1003.1-1990 7.1.1.4 79-87).
- +BUG: if the process group is orphaned and SIGTTOU *is not* blocked
- +or ignored, we should return EIO instead of signalling.
- +*/
- if (tty->pgrp && tty->pgrp != curproc->pgrp &&
- - (tty->sg.sg_flags & T_TOSTOP)) {
- + (tty->sg.sg_flags & T_TOSTOP) &&
- + (curproc->sighandle[SIGTTOU] != SIG_IGN) &&
- + ((curproc->sigmask & (1L << SIGTTOU)) == 0L) &&
- + (f->fc.dev == curproc->control->fc.dev) &&
- + (f->fc.index == curproc->control->fc.index)) {
- TRACE(("job control: tty pgrp is %d proc pgrp is %d",
- tty->pgrp, curproc->pgrp));
- killgroup(curproc->pgrp, SIGTTOU);
-
- --
- entropy -- it's not just a good idea, it's the second law.
- Personal mail: entropy@gnu.ai.mit.edu
- MiNT library mail: entropy@terminator.rs.itd.umich.edu
- "what do you have against octal?" -jrb
-
-