1/* $OpenBSD: xmalloc.c,v 1.10 2019/06/28 05:44:09 deraadt Exp $ */ 2/* 3 * Author: Tatu Ylonen <ylo@cs.hut.fi> 4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 5 * All rights reserved 6 * Versions of malloc and friends that check their results, and never return 7 * failure (they call fatal if they encounter an error). 8 * 9 * As far as I am concerned, the code I have written for this software 10 * can be used freely for any purpose. Any derived versions of this 11 * software must be clearly marked as such, and if the derived work is 12 * incompatible with the protocol description in the RFC file, it must be 13 * called by a name other than "ssh" or "Secure Shell". 14 */ 15 16#include <sys/cdefs.h> 17__FBSDID("$FreeBSD: stable/11/usr.bin/diff/xmalloc.c 360405 2020-04-27 22:34:45Z kevans $"); 18 19#include <err.h> 20#include <stdarg.h> 21#include <stdint.h> 22#include <stdio.h> 23#include <stdlib.h> 24#include <string.h> 25 26#include "xmalloc.h" 27 28void * 29xmalloc(size_t size) 30{ 31 void *ptr; 32 33 if (size == 0) 34 errx(2, "xmalloc: zero size"); 35 ptr = malloc(size); 36 if (ptr == NULL) 37 err(2, "xmalloc: allocating %zu bytes", size); 38 return ptr; 39} 40 41void * 42xcalloc(size_t nmemb, size_t size) 43{ 44 void *ptr; 45 46 ptr = calloc(nmemb, size); 47 if (ptr == NULL) 48 err(2, "xcalloc: allocating %zu * %zu bytes", nmemb, size); 49 return ptr; 50} 51 52void * 53xreallocarray(void *ptr, size_t nmemb, size_t size) 54{ 55 void *new_ptr; 56 57 new_ptr = reallocarray(ptr, nmemb, size); 58 if (new_ptr == NULL) 59 err(2, "xreallocarray: allocating %zu * %zu bytes", 60 nmemb, size); 61 return new_ptr; 62} 63 64char * 65xstrdup(const char *str) 66{ 67 char *cp; 68 69 if ((cp = strdup(str)) == NULL) 70 err(2, "xstrdup"); 71 return cp; 72} 73 74int 75xasprintf(char **ret, const char *fmt, ...) 76{ 77 va_list ap; 78 int i; 79 80 va_start(ap, fmt); 81 i = vasprintf(ret, fmt, ap); 82 va_end(ap); 83 84 if (i == -1) 85 err(2, "xasprintf"); 86 87 return i; 88} 89