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146 lines
2.7 KiB
C
146 lines
2.7 KiB
C
/* $Id: xmalloc.c,v 1.12 2009-10-28 23:12:38 tcunha Exp $ */
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/*
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* Copyright (c) 2004 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/param.h>
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#include <errno.h>
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#include <libgen.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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char *
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xstrdup(const char *s)
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{
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char *ptr;
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size_t len;
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len = strlen(s) + 1;
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ptr = xmalloc(len);
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strlcpy(ptr, s, len);
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return (ptr);
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}
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void *
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xcalloc(size_t nmemb, size_t size)
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{
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void *ptr;
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if (size == 0 || nmemb == 0)
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fatalx("zero size");
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if (SIZE_MAX / nmemb < size)
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fatalx("nmemb * size > SIZE_MAX");
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if ((ptr = calloc(nmemb, size)) == NULL)
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fatal("xcalloc failed");
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return (ptr);
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}
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void *
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xmalloc(size_t size)
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{
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void *ptr;
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if (size == 0)
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fatalx("zero size");
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if ((ptr = malloc(size)) == NULL)
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fatal("xmalloc failed");
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return (ptr);
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}
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void *
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xrealloc(void *oldptr, size_t nmemb, size_t size)
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{
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size_t newsize = nmemb * size;
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void *newptr;
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if (newsize == 0)
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fatalx("zero size");
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if (SIZE_MAX / nmemb < size)
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fatalx("nmemb * size > SIZE_MAX");
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if ((newptr = realloc(oldptr, newsize)) == NULL)
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fatal("xrealloc failed");
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return (newptr);
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}
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void
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xfree(void *ptr)
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{
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if (ptr == NULL)
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fatalx("null pointer");
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free(ptr);
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}
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int printflike2
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xasprintf(char **ret, const char *fmt, ...)
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{
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va_list ap;
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int i;
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va_start(ap, fmt);
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i = xvasprintf(ret, fmt, ap);
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va_end(ap);
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return (i);
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}
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int
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xvasprintf(char **ret, const char *fmt, va_list ap)
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{
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int i;
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i = vasprintf(ret, fmt, ap);
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if (i < 0 || *ret == NULL)
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fatal("xvasprintf failed");
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return (i);
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}
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int printflike3
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xsnprintf(char *buf, size_t len, const char *fmt, ...)
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{
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va_list ap;
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int i;
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va_start(ap, fmt);
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i = xvsnprintf(buf, len, fmt, ap);
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va_end(ap);
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return (i);
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}
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int
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xvsnprintf(char *buf, size_t len, const char *fmt, va_list ap)
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{
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int i;
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if (len > INT_MAX)
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fatalx("len > INT_MAX");
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i = vsnprintf(buf, len, fmt, ap);
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if (i < 0)
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fatal("vsnprintf failed");
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return (i);
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}
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