118 lines
2.4 KiB
C
118 lines
2.4 KiB
C
/*
|
|
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
|
|
*
|
|
* SPDX-License-Identifier: MPL-2.0
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
|
|
*
|
|
* See the COPYRIGHT file distributed with this work for additional
|
|
* information regarding copyright ownership.
|
|
*/
|
|
|
|
/*! \file */
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#ifdef HAVE_BACKTRACE_SYMBOLS
|
|
#include <execinfo.h>
|
|
#endif /* HAVE_BACKTRACE_SYMBOLS */
|
|
|
|
#include <isc/backtrace.h>
|
|
#include <isc/log.h>
|
|
#include <isc/result.h>
|
|
#include <isc/util.h>
|
|
|
|
#if HAVE_BACKTRACE_SYMBOLS
|
|
int
|
|
isc_backtrace(void **addrs, int maxaddrs) {
|
|
int n;
|
|
|
|
/*
|
|
* Validate the arguments: intentionally avoid using REQUIRE().
|
|
* See notes in backtrace.h.
|
|
*/
|
|
if (addrs == NULL || maxaddrs <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* backtrace(3) includes this function itself in the address array,
|
|
* which should be eliminated from the returned sequence.
|
|
*/
|
|
n = backtrace(addrs, maxaddrs);
|
|
if (n < 2) {
|
|
return -1;
|
|
}
|
|
n--;
|
|
memmove(addrs, &addrs[1], sizeof(addrs[0]) * n);
|
|
|
|
return n;
|
|
}
|
|
|
|
char **
|
|
isc_backtrace_symbols(void *const *buffer, int size) {
|
|
return backtrace_symbols(buffer, size);
|
|
}
|
|
|
|
void
|
|
isc_backtrace_symbols_fd(void *const *buffer, int size, int fd) {
|
|
backtrace_symbols_fd(buffer, size, fd);
|
|
}
|
|
|
|
void
|
|
isc_backtrace_log(isc_log_t *lctx, isc_logcategory_t *category,
|
|
isc_logmodule_t *module, int level) {
|
|
void *tracebuf[ISC_BACKTRACE_MAXFRAME];
|
|
int nframes;
|
|
char **strs;
|
|
|
|
nframes = isc_backtrace(tracebuf, ISC_BACKTRACE_MAXFRAME);
|
|
if (nframes <= 0) {
|
|
return;
|
|
}
|
|
strs = isc_backtrace_symbols(tracebuf, nframes);
|
|
if (strs == NULL) {
|
|
return;
|
|
}
|
|
for (int i = 0; i < nframes; i++) {
|
|
isc_log_write(lctx, category, module, level, "%s", strs[i]);
|
|
}
|
|
}
|
|
|
|
#else /* HAVE_BACKTRACE_SYMBOLS */
|
|
|
|
int
|
|
isc_backtrace(void **addrs, int maxaddrs) {
|
|
UNUSED(addrs);
|
|
UNUSED(maxaddrs);
|
|
|
|
return -1;
|
|
}
|
|
|
|
char **
|
|
isc_backtrace_symbols(void *const *buffer, int size) {
|
|
UNUSED(buffer);
|
|
UNUSED(size);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
isc_backtrace_symbols_fd(void *const *buffer, int size, int fd) {
|
|
UNUSED(buffer);
|
|
UNUSED(size);
|
|
UNUSED(fd);
|
|
}
|
|
|
|
void
|
|
isc_backtrace_log(isc_log_t *lctx, isc_logcategory_t *category,
|
|
isc_logmodule_t *module, int level) {
|
|
UNUSED(lctx);
|
|
UNUSED(category);
|
|
UNUSED(module);
|
|
UNUSED(level);
|
|
}
|
|
|
|
#endif /* HAVE_BACKTRACE_SYMBOLS */
|