/* $NetBSD: emalloc.c,v 1.9 2020/05/25 20:47:24 christos Exp $ */
/*
* emalloc - return new memory obtained from the system. Belch if none.
*/
#include <config.h>
#include "ntp_types.h"
#include "ntp_malloc.h"
#include "ntp_syslog.h"
#include "ntp_stdlib.h"
/*
* When using the debug MS CRT allocator, each allocation stores the
* callsite __FILE__ and __LINE__, which is then displayed at process
* termination, to track down leaks. We don't want all of our
* allocations to show up as coming from emalloc.c, so we preserve the
* original callsite's source file and line using macros which pass
* __FILE__ and __LINE__ as parameters to these routines.
* Other debug malloc implementations can be used by defining
* EREALLOC_IMPL() as ports/winnt/include/config.h does.
*/
void *
ereallocz(
void * ptr,
size_t newsz,
size_t priorsz,
int zero_init
#ifdef EREALLOC_CALLSITE /* ntp_malloc.h */
,
const char * file,
int line
#endif
)
{
char * mem;
size_t allocsz;
if (0 == newsz)
allocsz = 1;
else
allocsz = newsz;
mem = EREALLOC_IMPL(ptr, allocsz, file, line);
if (NULL == mem) {
msyslog_term = TRUE;
#ifndef EREALLOC_CALLSITE
msyslog(LOG_ERR, "fatal out of memory (%lu bytes)",
(u_long)newsz);
#else
msyslog(LOG_ERR,
"fatal out of memory %s line %d (%lu bytes)",
file, line, (u_long)newsz);
#endif
exit(1);
}
if (zero_init && newsz > priorsz)
zero_mem(mem + priorsz, newsz - priorsz);
return mem;
}
/* oreallocarray.c is licensed under the following:
* Copyright (c) 2008 Otto Moerbeek <
[email protected]>
*
* 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
*/
/*
* This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
* if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
*/
#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
void *
oreallocarrayxz(
void *optr,
size_t nmemb,
size_t size,
size_t extra
#ifdef EREALLOC_CALLSITE /* ntp_malloc.h */
,
const char * file,
int line
#endif
)
{
if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
nmemb > 0 && SIZE_MAX / nmemb < size) {
#ifndef EREALLOC_CALLSITE
msyslog(LOG_ERR, "fatal allocation size overflow");
#else
msyslog(LOG_ERR,
"fatal allocation size overflow %s line %d",
file, line);
#endif
exit(1);
}
#ifndef EREALLOC_CALLSITE
return ereallocz(optr, extra + (size * nmemb), 0, TRUE);
#else
return ereallocz(optr, extra + (size * nmemb), 0, TRUE, file, line);
#endif
}
char *
estrdup_impl(
const char * str
#ifdef EREALLOC_CALLSITE
,
const char * file,
int line
#endif
)
{
char * copy;
size_t bytes;
bytes = strlen(str) + 1;
copy = ereallocz(NULL, bytes, 0, FALSE
#ifdef EREALLOC_CALLSITE
, file, line
#endif
);
memcpy(copy, str, bytes);
return copy;
}
#if 0
#ifndef EREALLOC_CALLSITE
void *
emalloc(size_t newsz)
{
return ereallocz(NULL, newsz, 0, FALSE);
}
#endif
#endif
