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| author | Elliott Hughes <enh@google.com> | 2021-08-26 17:33:42 -0700 |
|---|---|---|
| committer | Rob Landley <rob@landley.net> | 2021-08-27 08:56:43 -0500 |
| commit | 0737ba9e8dd19c101bee7798170a7ad8f5c90c40 (patch) | |
| tree | ab567eefcaa4ed41fa38f65bfa280919b5b464ad | |
| parent | 366d5a96b041ebcd71e44249fb1472e27ea0c705 (diff) | |
| download | toybox-0737ba9e8dd19c101bee7798170a7ad8f5c90c40.tar.gz | |
kill: allow `kill -0` for testing process existence.
Allow num_to_sig(0) so kill doesn't disallow -0 because it can't
round-trip, and then teach list_signals() to avoid the special case of
signal 0 rather than assume that all the signals it shouldn't print
don't have names now signal 0 has the name "0".
| -rw-r--r-- | lib/lib.c | 2 | ||||
| -rw-r--r-- | lib/portability.c | 1 |
2 files changed, 2 insertions, 1 deletions
@@ -931,7 +931,7 @@ void sigatexit(void *handler) // Output a nicely formatted table of all the signals. void list_signals(void) { - int i = 0, count = 0; + int i = 1, count = 0; unsigned cols = 80; char *name; diff --git a/lib/portability.c b/lib/portability.c index f97af60e..c95a7526 100644 --- a/lib/portability.c +++ b/lib/portability.c @@ -422,6 +422,7 @@ int posix_fallocate(int fd, off_t offset, off_t length) #define SIGNIFY(x) {SIG##x, #x} static const struct signame signames[] = { + {0, "0"}, // POSIX SIGNIFY(ABRT), SIGNIFY(ALRM), SIGNIFY(BUS), SIGNIFY(FPE), SIGNIFY(HUP), SIGNIFY(ILL), SIGNIFY(INT), SIGNIFY(KILL), |