mirror of
https://github.com/jart/cosmopolitan.git
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f2af97711b
- Improve compatibility with Blink virtual machine - Add non-POSIX APIs for joining threads and signal masks - Never ever use anything except 32-bit integers for atomics - Add some `#undef` statements to workaround `ctags` problems
89 lines
3.5 KiB
C
89 lines
3.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/siginfo.h"
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#include "libc/calls/struct/siginfo.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/intrin/weaken.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sig.h"
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#ifdef DescribeSiginfo
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#undef DescribeSiginfo
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#endif
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#define N 300
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#define append(...) i += ksnprintf(buf + i, N - i, __VA_ARGS__)
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const char *DescribeSiginfo(char buf[N], int rc, const siginfo_t *si) {
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int i = 0;
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if (rc == -1) return "n/a";
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if (!si) return "NULL";
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if ((!IsAsan() && kisdangerous(si)) ||
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(IsAsan() && !__asan_is_valid(si, sizeof(*si)))) {
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ksnprintf(buf, N, "%p", si);
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return buf;
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}
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append("{.si_signo=%s, si_code=%s", strsignal(si->si_signo),
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DescribeSiCode(si->si_signo, si->si_code));
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if (si->si_errno) {
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append(", .si_errno=%s", DescribeErrno(si->si_errno));
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}
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if (si->si_signo == SIGILL || //
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si->si_signo == SIGFPE || //
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si->si_signo == SIGSEGV || //
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si->si_signo == SIGBUS || //
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si->si_signo == SIGTRAP) {
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append(", .si_addr=%p, .si_addr_lsb=%d, .si_pkey=%u", si->si_addr,
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si->si_addr_lsb, si->si_pkey);
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} else if (si->si_signo == SIGALRM) {
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append(", .si_timerid=%d, .si_overrun=%d", si->si_timerid, si->si_overrun);
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} else {
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if (si->si_pid) {
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append(", .si_pid=%d", si->si_pid);
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}
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if (si->si_uid) {
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append(", .si_uid=%d", si->si_uid);
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}
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}
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if (si->si_status) {
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append(", .si_status=%d", si->si_status);
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}
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if (si->si_utime) {
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append(", .si_utime=%d", si->si_utime);
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}
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if (si->si_stime) {
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append(", .si_stime=%d", si->si_stime);
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}
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append("}");
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return buf;
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}
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