52 lines
2.6 KiB
C
52 lines
2.6 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/macros.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/auxv.h"
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struct FindComBinary {
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bool once;
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const char *res;
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char buf[PATH_MAX];
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};
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static struct FindComBinary g_findcombinary;
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/**
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* Returns path of binary without debug information, or null.
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*
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* @return path to non-debug binary, or -1 w/ errno
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*/
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const char *FindComBinary(void) {
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size_t len;
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const char *p;
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if (!g_findcombinary.once) {
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g_findcombinary.once = true;
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if ((p = (const char *)getauxval(AT_EXECFN)) &&
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(len = strlen(p)) < ARRAYLEN(g_findcombinary.buf)) {
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g_findcombinary.res = memcpy(g_findcombinary.buf, p, len + 1);
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if (len > 4 && memcmp(&g_findcombinary.buf[len - 4], ".dbg", 4) == 0) {
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g_findcombinary.buf[len - 4] = '\0';
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}
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}
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}
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return g_findcombinary.res;
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}
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