/* $Id: xmalloc.c,v 1.1.1.2 2011/08/17 18:40:05 jmmv Exp $ */ /* * Copyright (c) 2004 Nicholas Marriott * * 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 #include #include #include #include #include "tmux.h" char * xstrdup(const char *s) { char *ptr; size_t len; len = strlen(s) + 1; ptr = xmalloc(len); strlcpy(ptr, s, len); return (ptr); } 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); }