mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-05 20:22:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Initial import

Browse source
This commit is contained in:
Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
14915 changed files with 590219 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

69
libc/log/onkill.c Normal file
View file

@ -0,0 +1,69 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/bits.h"
#include "libc/calls/calls.h"
#include "libc/calls/sigbits.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/dce.h"
#include "libc/log/log.h"
#include "libc/macros.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/sa.h"
#include "libc/sysv/consts/sig.h"
/**
* @fileoverview Default handlers for normal termination signals.
* @note This gets linked when __cxa_atexit() is linked.
* @see also libc/oncrash.c
*/
struct ucontext;
struct siginfo;
static const int sigs[] = {
SIGHUP, /* hangup aka ctrl_close_event */
SIGINT, /* ctrl+c aka ^C aka ETX aka \003 aka ♥ */
SIGTERM /* kill (default signal) */
};
textexit static void __onkill(int sig, struct siginfo *si,
struct ucontext *context) {
/* https://www.tldp.org/LDP/abs/html/exitcodes.html */
exit(128 + sig);
unreachable;
}
/**
* Installs default handlers for friendly kill signals.
* @see showcrashreports()
*/
void callexitontermination(sigset_t *opt_out_exitsigs) {
struct sigaction sa;
if (opt_out_exitsigs) sigemptyset(opt_out_exitsigs);
memset(&sa, 0, sizeof(sa));
sa.sa_sigaction = __onkill;
sa.sa_flags = SA_RESETHAND;
for (unsigned i = 0; i < ARRAYLEN(sigs); ++i) {
if (!sigs[i]) continue;
if (opt_out_exitsigs) sigaddset(opt_out_exitsigs, sigs[i]);
sigaction(sigs[i], &sa, NULL);
}
}