Commit Graph

35 Commits

Author SHA1 Message Date
jilles
69642127b4 sh: Move some code from onint() to onsig(), making onint() noreturn.
As a result, the INTON macro which is used many times generates fewer
bytes of code.
2014-12-21 23:09:59 +00:00
jilles
6c8ea83ec5 sh: Prepend "$0: " to error messages if there is no command name. 2014-11-22 23:28:41 +00:00
jilles
eb00352e45 sh: Add a function to print warnings (with command name and newline).
This is like error() but without raising an exception.
It is particularly useful as a replacement for the warnx macro in
bltin/bltin.h.
2010-12-21 20:47:06 +00:00
obrien
08b8d916b5 In the spirit of r90111, depend on c89 and remove the "STATIC" macro
and its usage.
2010-10-13 22:18:03 +00:00
obrien
f31ad1c86b Consistently use "STATIC" for all functions in order to be able to set
breakpoints with in a debugger.  And use naked "static" for variables.

Noticed by:	bde
2010-10-13 04:01:01 +00:00
jilles
392fc0c63d sh: Fix shadowing of sigset. 2010-08-13 13:36:18 +00:00
jilles
446838eef9 sh: Fix some bugs with backquoted builtins:
- correctly handle error output in $(builtin 2>&1), clarify out1/out2 vs
  output/errout in the code
- treat all builtins as regular builtins so errors do not abort the shell
  and variable assignments do not persist
- respect the caller's INTOFF

Some bugs still exist:
- expansion errors may still abort the shell
- some side effects of expansions and builtins persist
2010-01-01 18:17:46 +00:00
jilles
e7ce62d8ac sh: Add some __dead2 to indicate functions that do not return. 2009-12-24 20:55:14 +00:00
jilles
760264169e Fix various things about SIGINT handling:
* exception handlers are now run with interrupts disabled, which avoids
  many race conditions
* fix some cases where SIGINT only aborts one command and continues the
  script, in particular if a SIGINT causes an EINTR error which trumped the
  interrupt.

Example:
  sh -c 'echo < /some/fifo; echo This should not be printed'
The fifo should not have writers. When pressing ctrl+c to abort the open,
the shell used to continue with the next command.

Example:
  sh -c '/bin/echo < /some/fifo; echo This should not be printed'
Similar. Note, however, that this particular case did not and does not work
in interactive mode with job control enabled.
2009-11-22 18:23:30 +00:00
schweikh
627562241f Remove some white space at EOL. 2006-02-04 14:37:50 +00:00
markm
4383f14801 Remove clause 3 from the UCB licenses.
OK'ed by:	imp, core
2004-04-06 20:06:54 +00:00
tjr
6307190b53 Convert the remaining callers of errmsg() to use strerror(), and remove
errmsg() and its table of error messages.
2002-09-29 11:37:39 +00:00
trhodes
9618da3e35 s/filesystem/file system/ as discussed on -developers 2002-08-21 17:32:44 +00:00
tjr
6f7073eccf Remove broken and incomplete support for old releases of System V,
don't support system that implement getcwd(3) with a pipe to /bin/pwd.
2002-07-19 08:09:04 +00:00
obrien
f6f518b207 Consistently use FBSDID 2002-06-30 05:15:05 +00:00
tjr
ada2f900a3 Implement the -C (-o noclobber) option, which prevents existing regular
files from being overwritten by shell redirection.
2002-05-19 06:03:05 +00:00
trhodes
56036d2623 Consistancy check s/file system/filesystem/
Reviewed by:	brian
2002-05-16 01:57:20 +00:00
imp
5ef5088ac4 o __P has been reoved
o Old-style K&R declarations have been converted to new C89 style
o register has been removed
o prototype for main() has been removed (gcc3 makes it an error)
o int main(int argc, char *argv[]) is the preferred main definition.
o Attempt to not break style(9) conformance for declarations more than
  they already are.
o Change
	int
	foo() {
	...
  to
	int
	foo(void)
	{
	...
2002-02-02 06:50:57 +00:00
dd
ef9ae51ffe Include missing header files which define functions for which gcc has
builtins (e.g., exit, strcmp).
2001-06-24 23:04:23 +00:00
kris
b6da0fca77 -Wnon-const-format sweep: make format strings const char *'s, add
__printflike()/__printf0like() to function prototypes, as appropriate.

Reviewed by:	bde, -audit
2001-04-17 07:46:38 +00:00
cracauer
903b2c868c Include strerror(errno) in error messages after failed system calls.
Fix a warning.
1999-11-29 19:11:01 +00:00
peter
66312e4a8d $Id$ -> $FreeBSD$ 1999-08-27 23:15:48 +00:00
cracauer
2ca0a9a7fb Improve bookkeeping of in_waitcmd and style fixes.
Submitted by:	Bruce Evans
1998-08-25 09:33:34 +00:00
cracauer
57a57a05ca Got two volatile sig_atomic_t and int mixed up. Spotted by Gary Palmer. 1998-08-24 19:15:48 +00:00
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
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
c58aca035e Merge in NetBSD mods and -Wall cleaning.
Obtained from: NetBSD, me
1996-12-14 06:20:03 +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
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
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