1 /* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * Versions of malloc and friends that check their results, and never return 6 * failure (they call fatal if they encounter an error). 7 * 8 * As far as I am concerned, the code I have written for this software 9 * can be used freely for any purpose. Any derived versions of this 10 * software must be clearly marked as such, and if the derived work is 11 * incompatible with the protocol description in the RFC file, it must be 12 * called by a name other than "ssh" or "Secure Shell". 13 */ 14 15 #include "includes.h" 16 RCSID("$OpenBSD: xmalloc.c,v 1.16 2001/07/23 18:21:46 stevesk Exp $"); 17 18 #include "xmalloc.h" 19 #include "log.h" 20 21 void * 22 xmalloc(size_t size) 23 { 24 void *ptr; 25 26 if (size == 0) 27 fatal("xmalloc: zero size"); 28 ptr = malloc(size); 29 if (ptr == NULL) 30 fatal("xmalloc: out of memory (allocating %lu bytes)", (u_long) size); 31 return ptr; 32 } 33 34 void * 35 xrealloc(void *ptr, size_t new_size) 36 { 37 void *new_ptr; 38 39 if (new_size == 0) 40 fatal("xrealloc: zero size"); 41 if (ptr == NULL) 42 new_ptr = malloc(new_size); 43 else 44 new_ptr = realloc(ptr, new_size); 45 if (new_ptr == NULL) 46 fatal("xrealloc: out of memory (new_size %lu bytes)", (u_long) new_size); 47 return new_ptr; 48 } 49 50 void 51 xfree(void *ptr) 52 { 53 if (ptr == NULL) 54 fatal("xfree: NULL pointer given as argument"); 55 free(ptr); 56 } 57 58 char * 59 xstrdup(const char *str) 60 { 61 size_t len; 62 char *cp; 63 64 len = strlen(str) + 1; 65 cp = xmalloc(len); 66 strlcpy(cp, str, len); 67 return cp; 68 } 69