mirror of
https://github.com/jart/cosmopolitan.git
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77 lines
3.5 KiB
C
77 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 2022 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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#define ShouldUseMsabiAttribute() 1
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#include "libc/dce.h"
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#include "libc/fmt/fmt.h"
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#include "libc/fmt/magnumstrs.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/enum/formatmessageflags.h"
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#include "libc/nt/enum/lang.h"
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#include "libc/nt/process.h"
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#include "libc/str/str.h"
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// clang-format off
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#if defined(SYSDEBUG) && _NTTRACE
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privileged
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#endif
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/**
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* Converts errno value to string with explicit windows errno too.
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*
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* @param err is error number or zero if unknown
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* @return 0 on success, or error code
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*/
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int strerror_wr(int err, uint32_t winerr, char *buf, size_t size) {
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/* kprintf() weakly depends on this function */
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int c, n;
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char16_t winmsg[256];
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const char *sym, *msg;
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/* wanting = false; */
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if (!(sym = _strerrno(err))) {
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sym = "EUNKNOWN";
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/* wanting = true; */
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}
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if (!(msg = _strerdoc(err))) {
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msg = "No error information";
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/* wanting = true; */
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}
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if (IsTiny()) {
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if (!sym) sym = "EUNKNOWN";
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for (; (c = *sym++); --size)
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if (size > 1) *buf++ = c;
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if (size) *buf = 0;
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} else if (!IsWindows() /* || ((err == winerr || !winerr) && !wanting) */) {
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ksnprintf(buf, size, "%s/%d/%s", sym, err, msg);
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} else {
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if ((n = __imp_FormatMessageW(
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kNtFormatMessageFromSystem | kNtFormatMessageIgnoreInserts, 0,
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winerr, MAKELANGID(kNtLangNeutral, kNtSublangDefault), winmsg,
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ARRAYLEN(winmsg), 0))) {
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while ((n && winmsg[n - 1] <= ' ') || winmsg[n - 1] == '.') --n;
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ksnprintf(buf, size, "%s/%d/%s/%d/%.*hs", sym, err, msg, winerr, n,
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winmsg);
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} else {
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ksnprintf(buf, size, "%s/%d/%s/%d", sym, err, msg, winerr);
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}
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}
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return 0;
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}
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