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mksh/signames.c

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Clean up the signal mess, saves 172 Bytes: * 'sigseen' in Build.sh goes away * Signal name existence is checked in this order: have our own¹ -> sys_signame[] -> _sys_signame[] -> build our own² * Signal description existence is checked in this order: sys_siglist[] -> _sys_siglist[] -> strsignal() -> NULL³ ¹ Predefined list of items, for operating systems where we cannot build² them, i.e. Plan 9 and Minix 3 (e.g. no $CPP -dD) ² The usual cpp(1) stuff ³ Changed later, see below * Make $CPP test dependent on $NEED_MKSH_SIGNAME (others can be added here, this is not absolute) * Make signal name list generation² dependent on $NEED_MKSH_SIGNAME * Fix check if the generation worked * Guarantee that sigtraps[*].name and sigtraps[*].mess are valid C strings; this makes the code shorter *and* removes a few pos- sible nil pointer dereferences * Embed autoconf'd usages of sys_sig* / strsignal / mksh_sigpairs into inittraps() * Check for each signal 0<=i<=NSIG that name is not NULL or "" -> replace with ("%d", i) mess is not NULL or "" -> replace with ("Signal %d", i) name does not start (case-insensitive) with "SIG" -> name += 3 * In gettrap(), fix check if signal name starts, case-sensitive or case-insensitive, depending on need, with "SIG" (bug from millert@) Other changes: * Build.sh: ac_test[n]() are documented * Build.sh: ac_test[n]() can have negative prereqs as well now * Build.sh: use <<-'EOF' consistently * bump patchlevel to today
2007-01-12 01:25:40 +01:00
#ifndef MKSH_SIGNAMES_CHECK
__RCSID("$MirOS: src/bin/mksh/signames.c,v 1.1 2007/01/12 00:25:40 tg Exp $");
#endif
static const struct mksh_sigpair {
int nr;
const char *const name;
} mksh_sigpairs[] = {
#ifdef __Plan9__
...
#elif defined(__minix)
...
#elif defined(MKSH_SIGNAMES_CHECK)
#error no, must be OS supplied
#elif !defined(__IN_MKDEP)
#include "signames.inc"
#endif
{ 0, NULL }
};