1 /* $OpenBSD: xmalloc.c,v 1.8 2015/09/25 16:16:26 tedu 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 <err.h> 17 #include <stdarg.h> 18 #include <stdint.h> 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <string.h> 22 23 #include "xmalloc.h" 24 25 void * 26 xmalloc(size_t size) 27 { 28 void *ptr; 29 30 ptr = malloc(size); 31 if (ptr == NULL) 32 err(2, "xmalloc %zu", size); 33 return ptr; 34 } 35 36 void * 37 xcalloc(size_t nmemb, size_t size) 38 { 39 void *ptr; 40 41 ptr = calloc(nmemb, size); 42 if (ptr == NULL) 43 err(2, "xcalloc: out of memory (allocating %zu*%zu bytes)", 44 nmemb, size); 45 return ptr; 46 } 47 48 void * 49 xreallocarray(void *ptr, size_t nmemb, size_t size) 50 { 51 void *new_ptr; 52 53 new_ptr = reallocarray(ptr, nmemb, size); 54 if (new_ptr == NULL) 55 err(2, "xrealloc %zu*%zu", nmemb, size); 56 return new_ptr; 57 } 58 59 char * 60 xstrdup(const char *str) 61 { 62 char *cp; 63 64 if ((cp = strdup(str)) == NULL) 65 err(1, "xstrdup"); 66 return cp; 67 } 68 69 int 70 xasprintf(char **ret, const char *fmt, ...) 71 { 72 va_list ap; 73 int i; 74 75 va_start(ap, fmt); 76 i = vasprintf(ret, fmt, ap); 77 va_end(ap); 78 79 if (i < 0 || *ret == NULL) 80 err(2, "xasprintf"); 81 82 return (i); 83 } 84