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| author | Assaf Gordon <assafgordon@gmail.com> | 2019-02-15 12:31:48 -0700 |
|---|---|---|
| committer | Pádraig Brady <P@draigBrady.com> | 2019-03-04 00:37:07 -0800 |
| commit | 95adadd9a420812ddd3f0fc6105f668922a97ae5 (patch) | |
| tree | 7776675d03905503ace0005d62e6eff2a3d08803 /src/local.mk | |
| parent | 186896d65f6182dff15cad6c1045d22ad2004962 (diff) | |
| download | coreutils-95adadd9a420812ddd3f0fc6105f668922a97ae5.tar.gz | |
env: new options --{default,ignore,block}-signal[=SIG]
New options to set signal handlers for the command being executed.
--block-signal suggested by Paul Eggert in http://bugs.gnu.org/34488#71
--default-signal is useful to overcome the POSIX limitation that shell
must not override inherited signal state, e.g. the second 'trap' here is
a no-op:
trap '' PIPE && sh -c 'trap - PIPE ; seq inf | head -n1'
Instead use:
trap '' PIPE && sh -c 'env --default-signal=PIPE seq inf | head -n1'
Similarly, the following will prevent CTRL-C from terminating the
program:
env --ignore-signal=INT seq inf > /dev/null
See https://bugs.gnu.org/34488#8
* NEWS: Mention new options.
* doc/coreutils.texi (env invocation): Document new options.
* man/env.x: Add example of --default-signal=SIG usage.
(SEE ALSO): Mention sigprocmask.
* src/env.c (signals): New global variable.
(longopts): Add new options.
(usage): Print new options.
(parse_signal_params): Parse comma-separated list of signals, store in
signals variable.
(reset_signal_handlers): Set each signal to SIG_DFL/SIG_IGN.
(parse_block_signal_params): Parse command-line options.
(set_signal_proc_mask): Call sigprocmask to block/unblock signals.
(main): Process new options.
* src/local.mk (src_env_SOURCES): Add operand2sig.c.
* tests/misc/env-signal-handler.sh: New test.
* tests/local.mk (all_tests): Add new test.
Diffstat (limited to 'src/local.mk')
| -rw-r--r-- | src/local.mk | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/local.mk b/src/local.mk index ba219d530..a69d40521 100644 --- a/src/local.mk +++ b/src/local.mk @@ -356,6 +356,7 @@ src_coreutils_SOURCES = src/coreutils.c src_cp_SOURCES = src/cp.c $(copy_sources) $(selinux_sources) src_dir_SOURCES = src/ls.c src/ls-dir.c +src_env_SOURCES = src/env.c src/operand2sig.c src_vdir_SOURCES = src/ls.c src/ls-vdir.c src_id_SOURCES = src/id.c src/group-list.c src_groups_SOURCES = src/groups.c src/group-list.c |