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/* $OpenBSD: xmalloc.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */
/*
* Copyright (c) 2004 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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 MIND, 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.
*/
#include <sys/param.h>
#include <errno.h>
#include <libgen.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
char *
xstrdup(const char *s)
{
void *ptr;
size_t len;
len = strlen(s) + 1;
ptr = xmalloc(len);
return (strncpy(ptr, s, len));
}
void *
xcalloc(size_t nmemb, size_t size)
{
void *ptr;
if (size == 0 || nmemb == 0)
fatalx("zero size");
if (SIZE_MAX / nmemb < size)
fatalx("nmemb * size > SIZE_MAX");
if ((ptr = calloc(nmemb, size)) == NULL)
fatal("xcalloc failed");
return (ptr);
}
void *
xmalloc(size_t size)
{
void *ptr;
if (size == 0)
fatalx("zero size");
if ((ptr = malloc(size)) == NULL)
fatal("xmalloc failed");
return (ptr);
}
void *
xrealloc(void *oldptr, size_t nmemb, size_t size)
{
size_t newsize = nmemb * size;
void *newptr;
if (newsize == 0)
fatalx("zero size");
if (SIZE_MAX / nmemb < size)
fatalx("nmemb * size > SIZE_MAX");
if ((newptr = realloc(oldptr, newsize)) == NULL)
fatal("xrealloc failed");
return (newptr);
}
void
xfree(void *ptr)
{
if (ptr == NULL)
fatalx("null pointer");
free(ptr);
}
int printflike2
xasprintf(char **ret, const char *fmt, ...)
{
va_list ap;
int i;
va_start(ap, fmt);
i = xvasprintf(ret, fmt, ap);
va_end(ap);
return (i);
}
int
xvasprintf(char **ret, const char *fmt, va_list ap)
{
int i;
i = vasprintf(ret, fmt, ap);
if (i < 0 || *ret == NULL)
fatal("xvasprintf failed");
return (i);
}
int printflike3
xsnprintf(char *buf, size_t len, const char *fmt, ...)
{
va_list ap;
int i;
va_start(ap, fmt);
i = xvsnprintf(buf, len, fmt, ap);
va_end(ap);
return (i);
}
int
xvsnprintf(char *buf, size_t len, const char *fmt, va_list ap)
{
int i;
if (len > INT_MAX)
fatalx("len > INT_MAX");
i = vsnprintf(buf, len, fmt, ap);
if (i < 0)
fatal("vsnprintf failed");
return (i);
}
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