mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
e7611a8476
- Get threads working on NetBSD - Get threads working on OpenBSD - Fix Emacs config for Emacs v28 - Improve --strace logging of sigset_t - Improve --strace logging of struct stat - Improve memory safety of DescribeThing functions - Refactor auto stack allocation into LIBC_RUNTIME - Introduce shell.com example which works on Windows - Refactor __strace_thing into DescribeThing functions - Document the CHECK macros and improve them in NDEBUG mode - Rewrite MAP_STACK so it uses FreeBSD behavior across platforms - Deprecate and discourage the use of MAP_GROWSDOWN (it's weird)
64 lines
3 KiB
C
64 lines
3 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/bits/popcnt.h"
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#include "libc/calls/sigbits.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/str/str.h"
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const char *DescribeSigset(char *buf, size_t bufsize, int rc,
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const sigset_t *ss) {
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bool gotsome;
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int i, n, sig;
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sigset_t sigset;
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if (rc == -1) return "n/a";
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if (!ss) return "NULL";
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if ((!IsAsan() && kisdangerous(ss)) ||
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(IsAsan() && !__asan_is_valid(ss, sizeof(*ss)))) {
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ksnprintf(buf, sizeof(buf), "%p", ss);
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return buf;
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}
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i = 0;
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n = bufsize;
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sigset = *ss;
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gotsome = false;
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if (popcnt(sigset.__bits[0]) + popcnt(sigset.__bits[1]) > 64) {
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i += ksnprintf(buf + i, n - i, "~");
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sigset.__bits[0] = ~sigset.__bits[0];
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sigset.__bits[1] = ~sigset.__bits[1];
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}
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i += ksnprintf(buf + i, n - i, "{");
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for (sig = 1; sig < 128; ++sig) {
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if (sigismember(&sigset, sig)) {
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if (gotsome) {
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sig += ksnprintf(buf + sig, n - sig, ", ");
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} else {
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gotsome = true;
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}
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sig += ksnprintf(buf + sig, n - sig, "%s", strsignal(sig));
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}
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}
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i += ksnprintf(buf + i, n - i, "}");
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return buf;
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}
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