tmux/xmalloc.c

142 lines
2.7 KiB
C

/* $OpenBSD$ */
/*
* 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/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
char *
xstrdup(const char *str)
{
char *cp;
if ((cp = strdup(str)) == NULL)
fatal("xstrdup");
return (cp);
}
void *
xcalloc(size_t nmemb, size_t size)
{
void *ptr;
if (size == 0 || nmemb == 0)
fatalx("xcalloc: zero size");
if ((ptr = calloc(nmemb, size)) == NULL)
log_fatal("xcalloc: allocating %zu bytes", size);
return (ptr);
}
void *
xmalloc(size_t size)
{
void *ptr;
if (size == 0)
fatalx("xmalloc: zero size");
if ((ptr = malloc(size)) == NULL)
log_fatal("xmalloc: allocating %zu bytes", size);
return (ptr);
}
void *
xrealloc(void *oldptr, size_t newsize)
{
void *newptr;
if (newsize == 0)
fatalx("xrealloc: zero size");
if ((newptr = realloc(oldptr, newsize)) == NULL)
log_fatal("xrealloc: allocating %zu bytes", newsize);
return (newptr);
}
void *
xreallocarray(void *oldptr, size_t nmemb, size_t size)
{
void *newptr;
if (nmemb == 0 || size == 0)
fatalx("xreallocarray: zero size");
if ((newptr = reallocarray(oldptr, nmemb, size)) == NULL)
log_fatal("xreallocarray: allocating %zu * %zu bytes",
nmemb, size);
return (newptr);
}
int
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");
return (i);
}
int
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("xvsnprintf: len > INT_MAX");
i = vsnprintf(buf, len, fmt, ap);
if (i < 0 || i >= (int)len)
fatalx("xvsnprintf: overflow");
return (i);
}