Commit Graph

21 Commits

Author SHA1 Message Date
cracauer
8a3c521f04 Do not exit on SIGINT in non-interactive shells, fixes PR 1206,
i.e. this makes emacs usable from system(3). Programs called from
shellscripts are now required to exit with proper signal status. That
means, they have to kill themself. Exiting with faked numerical exit
code is not sufficient.

Exit with proper signal status if script exits on signal.

Make the wait builtin interruptable, both with and without traps set.

Use volatile sig_atomic_t where (and only where) appropriate.

(Almost) fix printing of newlines on SIGINT.

Make traps setable from trap handlers. This is needed for shellscripts
that catch SIGINT for cleanup work but intend to exit on it, hance
have to kill themself from a trap handler. I.e. mkdep.

While I'm at it, make it -Wall clean. -Wall is not enabled in
Makefile, since vararg warnx() macro calls in usr.bin/printf/printf.c
are not -Wall-able.
PR:		1206
Obtained from:	Basic SIGINT fix from Bruce Evans
1998-08-24 10:20:37 +00:00
charnier
86bc037e71 Add rcsid. Spelling. 1998-05-18 06:44:24 +00:00
cracauer
cc1e6a2611 Back out my previous attempt to fix SIGINT/SIGTERM behaviour 1998-02-06 23:50:39 +00:00
cracauer
69ec138f35 Fix handling of SIGINT/SIGQUIT for foreground subprocesses. Most
urgent need is when you run sh around a program that intentionally
uses SIGQUIT/SIGINT for asynchronous events, i.e. $EDITOR started from
system(2), like many mailers do. This fixes PR bin/1206 and possibly
bin/4241.

The solution committed has been tested for a large number of possible
cases (see recent discussion on cvs-committers). I completed a make
world, made sure 'make world' is interruptable and used the changed
/bin/sh as a login shell all day, including job control and using
SIGQUIT-catching programs (to write this message :-).

PR:		bin/1206
Reviewed by:	discussion on cvs-commiters
1998-02-06 18:14:26 +00:00
eivind
2208ac1acf Remove simultaneous include of <sys/param.h> and <sys/types.h>.
Reorder includes to be alphabetical some places since I already was in
here.
1997-12-10 22:18:54 +00:00
steve
4d76e42e81 Make all status values an integral type and use
pid_t when referring to process IDs.
1997-08-18 02:53:20 +00:00
steve
27968b9dee Make sh(1) less aware of the bit fields returned by wait by
using the WIF* macros in sys/wait.h.

PR: bin/3668
Submitted by:	dholland@eecs.harvard.edu
1997-05-24 21:04:55 +00:00
steve
2f84314766 Use the __unused attribute where warranted. 1997-05-19 00:18:52 +00:00
steve
2b784fa564 Nuke register keyword usage and #if -> #ifdef.
Obtained from: NetBSD
1997-04-28 03:06:52 +00:00
peter
83b3c2c161 Revert $FreeBSD$ to $Id$ 1997-02-22 14:13:04 +00:00
jkh
808a36ef65 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
steve
774419801b Fix a problem that caused some foreground pipelines to die with:
tcsetpgrp failed, errno=1

Discovered and Reviewed by: joerg
1997-01-06 01:26:44 +00:00
steve
c58aca035e Merge in NetBSD mods and -Wall cleaning.
Obtained from: NetBSD, me
1996-12-14 06:20:03 +00:00
steve
0b67136d65 Benign | --> || correction. 1996-10-16 02:30:39 +00:00
peter
0475c084c2 Fix for PR#1287. This makes sh behave sensibly in case statements in the
face of aliases.  Note, bash doesn't do aliases while running scripts, but
"real" ksh does..

Also:
  Reduce redundant .Nm macros in (unused) bltin/echo.1
  nuke error2, it's hardly used.
  More -Wall cleanups
  dont do certain history operations if NO_HISTORY defined
  handle quad_t's from resource limits

Submitted by: Steve Price <sprice@hiwaay.net>  (minor tweaks by me)
1996-09-03 14:16:06 +00:00
peter
0692a293b6 Misc cleanups and fixes from Bruce:
- don't put \n on error() calls, error adds it already.
 - don't prepend "ulimit" on error() calls in miscbltin.c.
 - getopt typo on ulimit -p -> -u conversion
 - get/setrlimit() calls were not being error checked

ulimit formatting cleanup from me, use same wording as bash on Bruce's
suggestion.  Add ulimit arg to output on Joerg's suggestion.
1996-09-03 13:35:11 +00:00
peter
5195be912e Merge of 4.4-Lite2 sh source, plus some gcc -Wall cleaning. This is a
merge of parallel duplicate work by Steve Price and myself. :-]

There are some changes to the build that are my fault...  mkinit.c was
trying (poorly) to duplicate some of the work that make(1) is designed to
do.  The Makefile hackery is my fault too, the depend list was incomplete
because of some explicit OBJS+= entries, so mkdep wasn't picking up their
source file #includes.

This closes a pile of /bin/sh PR's, but not all of them..

Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
1996-09-01 10:22:36 +00:00
bde
5f0de3a123 Fix relocation of job table.
while { sleep 1 & wait; } do echo 1; done

corrupted the job table every 4th iteration.
1995-09-21 13:24:20 +00:00
rgrimes
1888033949 Remove trailing whitespace.
Reviewed by:	phk
1995-05-30 00:07:29 +00:00
dg
8722740e7f Added $Id$ 1994-09-24 02:59:15 +00:00
rgrimes
e3cfc8ce61 BSD 4.4 Lite bin Sources 1994-05-26 06:18:55 +00:00