mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/*
|
|
* Copyright (C) 2001 Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
|
|
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
|
|
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
|
|
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
|
|
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
|
|
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/* $Id: strerror.c,v 1.3 2001/11/20 01:45:45 gson Exp $ */
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <isc/mutex.h>
|
|
#include <isc/once.h>
|
|
#include <isc/print.h>
|
|
#include <isc/strerror.h>
|
|
#include <isc/util.h>
|
|
|
|
#ifdef HAVE_STRERROR
|
|
/*
|
|
* We need to do this this way for profiled locks.
|
|
*/
|
|
static isc_mutex_t isc_strerror_lock;
|
|
static void init_lock(void) {
|
|
RUNTIME_CHECK(isc_mutex_init(&isc_strerror_lock) == ISC_R_SUCCESS);
|
|
}
|
|
#else
|
|
extern const char * const sys_errlist[];
|
|
extern const int sys_nerr;
|
|
#endif
|
|
|
|
void
|
|
isc__strerror(int num, char *buf, size_t size) {
|
|
#ifdef HAVE_STRERROR
|
|
char *msg;
|
|
unsigned int unum = num;
|
|
static isc_once_t once = ISC_ONCE_INIT;
|
|
|
|
REQUIRE(buf != NULL);
|
|
|
|
RUNTIME_CHECK(isc_once_do(&once, init_lock) == ISC_R_SUCCESS);
|
|
|
|
LOCK(&isc_strerror_lock);
|
|
msg = strerror(num);
|
|
if (msg != NULL)
|
|
snprintf(buf, size, "%s", msg);
|
|
else
|
|
snprintf(buf, size, "Unknown error: %u", unum);
|
|
UNLOCK(&isc_strerror_lock);
|
|
#else
|
|
unsigned int unum = num;
|
|
|
|
REQUIRE(buf != NULL);
|
|
|
|
if (num >= 0 && num < sys_nerr)
|
|
snprintf(buf, size, "%s", sys_errlist[num]);
|
|
else
|
|
snprintf(buf, size, "Unknown error: %u", unum);
|
|
#endif
|
|
}
|