mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-17 02:52:40 +00:00
68c7c9c1e0
- Use good ELF technique in cosmo_dlopen() - Make strerror() conform more to other libc impls - Introduce __clear_cache() and use it in cosmo_dlopen() - Remove libc/fmt/fmt.h header (trying to kill off LIBC_FMT)
66 lines
3 KiB
C
66 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 2020 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/fmt/magnumstrs.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sig.h"
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/**
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* Returns string describing signal code.
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*
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* This returns `"0"` for 0 which is the empty value. Symbolic names
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* should be available for signals 1 through 32. If the system supports
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* real-time signals, they're returned as `SIGRTMIN+%d`.
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*
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* @param sig is signal number which should be in range 1 through 128
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* @param buf may be used to store output having at least 15 bytes
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* @return pointer to .rodata string, or to `buf` after mutating
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* @see sigaction()
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* @asyncsignalsafe
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*/
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privileged const char *strsignal_r(int sig, char buf[21]) {
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char *p;
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const char *s;
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if (!sig) {
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return "0";
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}
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if ((s = GetMagnumStr(kSignalNames, sig))) {
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return s;
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}
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if (SIGRTMIN <= sig && sig <= SIGRTMAX) {
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sig -= SIGRTMIN;
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buf[0] = 'S';
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buf[1] = 'I';
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buf[2] = 'G';
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buf[3] = 'R';
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buf[4] = 'T';
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buf[5] = 'M';
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buf[6] = 'I';
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buf[7] = 'N';
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buf[8] = '+';
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p = buf + 9;
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} else {
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p = buf;
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}
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if (sig >= 100) *p++ = '0' + (unsigned char)sig / 100 % 10;
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if (sig >= 10) *p++ = '0' + (unsigned char)sig / 10 % 10;
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*p++ = '0' + (unsigned char)sig % 10;
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*p = 0;
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return buf;
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}
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