mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
ebf784d4f5
- Introduce ualarm() function - Make rename() report EISEMPTY on Windows - Always raise EINVAL upon open(O_RDONLY|O_TRUNC) - Add macro so ./configure will detect SOCK_CLOEXEC - Fix O_TRUNC without O_CREAT not working on Windows - Let fcntl(F_SETFL) change O_APPEND status on Windows - Make sure pwrite() / pread() report ESPIPE on sockets - Raise ESPIPE on Windows when pwrite() is used on pipe - Properly compute O_APPEND CreateFile() flags on Windows - Don't require O_DIRECTORY to open directories on Windows - Fix more instances of Windows reporting EISDIR and ENOTDIR - Normalize EFTYPE and EMLINK to ELOOP on NetBSD and FreeBSD - Make unlink() / rmdir() work on read-only files on Windows - Validate UTF-8 on Windows paths to fix bug with overlong NUL - Always print signal name to stderr when crashing due to SIG_DFL - Fix Windows bug where denormalized paths >260 chars didn't work - Block signals on BSDs when thread exits before trashing its own stack
65 lines
3 KiB
C
65 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/itoa.h"
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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`. For all other
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* 32-bit signed integer, a plain integer representation is returned.
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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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* @threadsafe
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*/
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privileged dontdiscard char *strsignal_r(int sig, char buf[15]) {
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int i;
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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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FormatInt32(buf + 9, sig);
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} else {
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FormatInt32(buf, sig);
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}
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return buf;
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}
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