8d23cb0373
Extended functionality of the trap builtin, which now closely follows
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POSIX recommendations.
- trap now accepts signal names and signal numbers
e.g. INT, SIGINT, 2
- added option -l that outputs a list of valid signals
- added signal EXIT to list of valid signals
- a `-' in the action part will reset specified signal to their
default behaviour
- changed standard output format to make it suitable as an input
to another shell that achieves the same trapping results
2001-03-18 04:04:23 +00:00
3380980447
remove redundant declarations and nexted externs.
2001-02-04 19:52:06 +00:00
e6bccfe4be
Back out previous vfork changes.
2000-05-22 10:18:46 +00:00
756a2ca1bd
Now we use vfork(2) instead of fork(2) when we can.
2000-05-13 20:50:14 +00:00
d6ac7627ea
Fix bin/9184, bin/9194, bin/9265, bin/9266
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Exitcode and negation problems (From Martin Husemann)
2000-01-27 23:39:38 +00:00
832949b912
When we execute commands from a shell script, make sure that the signals
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are being caught (reported by Alexis Rosen), similar to the -c case.
#!/bin/sh
vi "$@"
^C when the script is running...
1999-03-27 13:46:19 +00:00
1666f88d5d
Fix the -c problem differently. We cannot just ignore SIGINT etc, otherwise
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we cannot interrupt sh -c <command>
1999-02-05 21:21:27 +00:00
e1849b79b1
PR/6213: Urban Boquist: /bin/sh does not handle a trapped signal correctly
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The problem was that system calls got restarted after a signal,
instead of returning EINTR. Thus the read builtin, had no way to
know that a signal occured that could change the course of execution.
Since the code has sprinkled checks for EINTR all over the place,
it is supposed to work properly with non restartable syscalls.
The fix is to use siginterrupt(signo, 1), before setting a signal
handler, to make sure that system calls don't get restarted.
1999-01-18 16:18:04 +00:00
9dc385beb1
Delint.
1998-07-28 05:31:22 +00:00
cd799663e4
Fix compiler warnings.
1997-07-04 21:01:48 +00:00
bc73cf950a
PR/2808: Remove trailing whitespace (from FreeBSD)
1996-10-16 15:45:03 +00:00
9d255ec409
Ignore result of sigaction when setting traps. Traps will succeed even
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on SIGKILL or SIGSTOP. This is what other bourne shells do. (suggested
by mycroft)
1995-06-07 04:16:57 +00:00
b842cc2784
Avoid trapping SIGKILL. Pretend that we did, so that we will not keep
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failing trying to trap it later. This is what the other bourne shells do.
1995-06-05 14:24:33 +00:00
07bae7eddd
Merge in my changes from vangogh, and fix the x=`false`; echo $? == 0
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bug.
1995-05-11 21:28:33 +00:00
49f0ad8601
convert to new RCS id conventions.
1995-03-21 09:01:59 +00:00
58f1733118
be more careful with casts.
1994-12-23 13:24:39 +00:00
4ce0d34a31
clean up further. more patches from Jim Jegers
1994-12-05 19:07:32 +00:00
cafd1f7e9f
Add RCS ids.
1994-06-11 16:11:35 +00:00
1a3b3eb00a
last sys_signame[] changes; shell can now be built from scratch
1994-05-12 23:55:26 +00:00
a81e412494
Include appropriate header files to bring function prototypes into scope.
1994-05-12 17:03:32 +00:00
37ed7877b2
sync with 4.4lite
1994-05-11 17:09:42 +00:00
f637854f04
Use sys_signame[].
1993-08-06 21:50:14 +00:00
8542364e07
Add RCS identifiers.
1993-08-01 18:49:50 +00:00
06be60083d
changed "Id" to "Header" for rcsids
1993-03-23 00:22:59 +00:00
346aa5dd48
added rcs ids to all files
1993-03-22 08:04:00 +00:00
61f282557f
initial import of 386bsd-0.1 sources
1993-03-21 09:45:37 +00:00
wulf