53 lines
2.7 KiB
C
53 lines
2.7 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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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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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