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Commit Graph

46 Commits

Author SHA1 Message Date
Jilles Tjoelker
ef9e61785a sh: Avoid overflow in atoi() when parsing HISTSIZE.
Side effect: a non-numeric HISTSIZE now results in the default size (100)
instead of 0.
2014-08-17 19:36:56 +00:00
Jilles Tjoelker
7cbda73825 sh: Prefer internal nextopt() to libc getopt().
This reduces code duplication and code size.

/usr/bin/printf is not affected.

Side effect: different error messages when certain builtins are passed
invalid options.
2012-09-15 21:56:30 +00:00
Philippe Charnier
2fae4c3d95 Add prototypes, ANSIfy functions definitions to reduce WARNS=6 output. 2012-01-25 08:42:19 +00:00
Jilles Tjoelker
260fc3f4d2 sh: Make various functions static. 2012-01-01 22:17:12 +00:00
Jilles Tjoelker
454a02b372 sh: Fix duplicate prototypes for builtins.
Have mkbuiltins write the prototypes for the *cmd functions to builtins.h
instead of builtins.c and include builtins.h in more .c files instead of
duplicating prototypes for *cmd functions in other headers.
2011-06-13 21:03:27 +00:00
Jilles Tjoelker
685a270543 sh: Properly restore exception handler in fc.
If SIGINT arrived at exactly the right moment (unlikely), an exception
handler in a no longer active stack frame would be called.

Because the old handler was not used in the normal path, clang thought it
was a dead value and if an exception happened it would longjmp() to garbage.
This caused builtins/fc1.0 to fail if histedit.c was compiled with clang.

MFC after:	1 week
2010-12-29 19:39:51 +00:00
Jilles Tjoelker
9d37e15722 sh: Code size optimizations to "stack string" memory allocation:
* Prefer one CHECKSTRSPACE with multiple USTPUTC to multiple STPUTC.
* Add STPUTS macro (based on function) and use it instead of loops that add
  nul-terminated strings to the stack string.

No functional change is intended, but code size is about 1K less on i386.
2010-11-23 22:17:39 +00:00
Jilles Tjoelker
274110df0a sh: Tweak some string constants to reduce code size.
* Reduce some needless differences.
* Shorten some error messages that should not happen.
2010-10-29 21:44:43 +00:00
David E. O'Brien
7cfe69417c Do not assume in growstackstr() that a "precious" character will be
immediately written into the stack after the call.  Instead let the caller
manage the "space left".

Previously, growstackstr()'s assumption causes problems with STACKSTRNUL()
where we want to be able to turn a stack into a C string, and later
pretend the NUL is not there.

This fixes a bug in STACKSTRNUL() (that grew the stack) where:
1. STADJUST() called after a STACKSTRNUL() results in an improper adjust.
   This can be seen in ${var%pattern} and ${var%%pattern} evaluation.
2. Memory leak in STPUTC() called after a STACKSTRNUL().

Reviewed by:	jilles
2010-10-13 23:29:09 +00:00
David E. O'Brien
8832864298 In the spirit of r90111, depend on c89 and remove the "STATIC" macro
and its usage.
2010-10-13 22:18:03 +00:00
Jilles Tjoelker
933803fb21 sh: Do not enter consecutive duplicates into the history.
This simply sets a flag in libedit. It has a shortcoming in that it does not
apply to multi-line commands.

Note that a configuration option for this is not going to happen, but always
having this seems better than not having it. NetBSD has done the same.

PR:		bin/54683
Obtained from:	NetBSD
MFC after:	1 month
2010-08-01 16:37:51 +00:00
Jilles Tjoelker
e46b12b732 sh: Add filename completion.
This uses the new libedit completion function with quoting support.

Unlike NetBSD, there is no 'set +o tabcomplete' option to disable
completion. I do not see any reason for such a special treatment, as
completion is rather useful and it is possible to do
  bind ^I ed-insert
to disable completion and insert a tab character instead.

Submitted by:	Guy Yur
2010-06-15 21:58:40 +00:00
Jilles Tjoelker
580eefdf4f sh: Pass TERM changes to libedit.
I have changed the patch slightly to ignore TERM changes in subshells.

PR:		bin/146916
Submitted by:	Guy Yur
Obtained from:	NetBSD
2010-06-02 19:16:58 +00:00
Jilles Tjoelker
384aedab58 sh: Various warning fixes (from WARNS=6 NO_WERROR=1):
- const
- initializations to silence -Wuninitialized (it was safe anyway)
- remove nested extern declarations
- rename "index" locals to "idx"
2009-12-27 18:04:05 +00:00
Jilles Tjoelker
2cac6e364a sh: Constify various strings.
Most of this is adding const keywords, but setvar() in var.c had to be
changed somewhat more.
2009-12-24 18:41:14 +00:00
Jilles Tjoelker
c6204d4a81 sh: Some changes to stderr flushing:
* increase buffer size from 100 to 256 bytes
* remove implied flush from out2str(), in particular this avoids unnecessary
  flushing in the middle of a -x tracing line
* rename dprintf() to out2fmt_flush(), make it flush out2 and use this
  function in various places where flushing is desired after an error
  message
2009-11-21 14:28:32 +00:00
Jilles Tjoelker
224fbf9fd6 sh: Improve handling of setjmp/longjmp volatile:
- remove ineffective and unnecessary (void) &var; [1]
- remove some unnecessary volatile keywords
- add a necessary volatile keyword
- save the old handler before doing something that could use the saved
  value

Submitted by:	Christoph Mallon [1]
Approved by:	ed (mentor)
2009-06-23 20:45:12 +00:00
Stefan Farfeleder
cb806389db Fix the eval command in combination with set -e. Before this change the shell
would always terminate if eval returned with a non-zero exit status regardless
if the status was actually tested.  Unfortunately a new file-scope variable
is needed, the alternative would only be to add a new parameter to all
built-ins.

PR:	134881
2009-05-31 12:36:14 +00:00
Yaroslav Tykhiy
776fc0e90e Commit the results of the typo hunt by Darren Pilgrim.
This change affects documentation and comments only,
no real code involved.

PR:		misc/101245
Submitted by:	Darren Pilgrim <darren pilgrim bitfreak org>
Tested by:	md5(1)
MFC after:	1 week
2006-08-04 07:56:35 +00:00
Stefan Farfeleder
2110d9c31a Use the new name H_SETSIZE instead of the old H_EVENT to set the history
size.

PR:	86355
2005-10-19 15:37:43 +00:00
Stefan Farfeleder
7bdc89d779 El_parse's third parameter is now const-qualified, add a cast. 2005-08-11 20:28:26 +00:00
Mark Murray
6195fb4102 Remove clause 3 from the UCB licenses.
OK'ed by:	imp, core
2004-04-06 20:06:54 +00:00
Tim J. Robbins
0cda444bef Delete worthless comments. 2002-10-30 06:34:52 +00:00
Tim J. Robbins
050f7913c9 Set opterr to zero to avoid duplicate warnings from getopt(3) for unknown
options.
2002-07-25 10:47:38 +00:00
Tim J. Robbins
ecd807fb6d Call el_source() to read the contents of .editrc when line editing is enabled.
Obtained from:	NetBSD
MFC after:	2 weeks
2002-07-23 12:26:34 +00:00
Tim J. Robbins
088acf9001 Add a `bind' builtin command, which is simply a wrapper around libedit's
builtin command of the same name. This allows the key bindings for the
shell's line editor to be changed.

MFC after:	2 weeks
2002-07-23 11:50:53 +00:00
David E. O'Brien
2749b14129 Consistently use FBSDID 2002-06-30 05:15:05 +00:00
Tim J. Robbins
ee6712f2f9 Fix typo causing ``fc -e'' to not work correctly. getopt() sets optarg,
not shoptarg.
2002-06-02 08:34:09 +00:00
Tim J. Robbins
32c077867c Adding an entry to the history with H_ENTER moves libedit's internal
history cursor. Reset the cursor after adding the entry to the history
when doing ``fc -s'' so the output is correct.
2002-06-02 08:27:04 +00:00
Warner Losh
5134c3f799 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
David E. O'Brien
757eeda04b *** empty log message *** 2001-10-01 08:43:58 +00:00
Warner Losh
92e331afed Use PATH_MAX in preference in MAXPATHLEN. 2001-05-30 03:37:28 +00:00
Martin Cracauer
f01e3d0cfe Fix warnings, some of them serious because sh violated name
spaces reserved by the header files it includes.

mkinit.c still produces C code with redundant declarations, although
they are more harmless since they automatically derived from the right
places.
2000-04-20 09:49:16 +00:00
Peter Wemm
2a4562393f $Id$ -> $FreeBSD$ 1999-08-27 23:15:48 +00:00
Philippe Charnier
3d7b5b9302 Add rcsid. Spelling. 1998-05-18 06:44:24 +00:00
Steve Price
62730a71b9 When NO_HISTORY is defined and the history command is used
show an error message.

Inspired by: NetBSD
1997-04-28 03:10:31 +00:00
Warner Losh
93ef08af3e compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.
1997-03-28 15:24:41 +00:00
Peter Wemm
b97fa2ef50 Revert $FreeBSD$ to $Id$ 1997-02-22 14:13:04 +00:00
Jordan K. Hubbard
1130b656e5 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 Price
ab0a217285 Merge in NetBSD mods and -Wall cleaning.
Obtained from: NetBSD, me
1996-12-14 06:20:03 +00:00
Peter Wemm
16992ff483 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 Wemm
aa9caaf657 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
Rodney W. Grimes
2162b2d226 Remove trailing whitespace.
Reviewed by:	phk
1995-05-30 00:07:29 +00:00
David Greenman
3fb0993969 From "Philippe Charnier" <charnier@lirmm.fr>:
There is a bug in sh: the built in command "fc -l" generates
a core dump (*NULL in not_fcnumber).

According to the sh manual page (fc  -l [-nr] [first [last]]), fc -l
is a correct sequence (in that case, values are defaulted to -16 and -1)
but fails when first is not given.
1995-05-05 06:34:13 +00:00
David Greenman
89730b290a Added $Id$ 1994-09-24 02:59:15 +00:00
Rodney W. Grimes
4b88c807ea BSD 4.4 Lite bin Sources 1994-05-26 06:18:55 +00:00