Annotation of src/usr.bin/ssh/xmalloc.c, Revision 1.15.2.1
1.1 deraadt 1: /*
1.5 deraadt 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).
1.11 stevesk 7: *
1.8 deraadt 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".
1.5 deraadt 13: */
1.1 deraadt 14:
15: #include "includes.h"
1.15.2.1! jason 16: RCSID("$OpenBSD: xmalloc.c,v 1.16 2001/07/23 18:21:46 stevesk Exp $");
1.1 deraadt 17:
1.9 markus 18: #include "xmalloc.h"
19: #include "log.h"
1.1 deraadt 20:
1.4 markus 21: void *
22: xmalloc(size_t size)
1.1 deraadt 23: {
1.12 deraadt 24: void *ptr;
25:
26: if (size == 0)
27: fatal("xmalloc: zero size");
28: ptr = malloc(size);
1.4 markus 29: if (ptr == NULL)
1.14 itojun 30: fatal("xmalloc: out of memory (allocating %lu bytes)", (u_long) size);
1.4 markus 31: return ptr;
1.1 deraadt 32: }
33:
1.4 markus 34: void *
35: xrealloc(void *ptr, size_t new_size)
1.1 deraadt 36: {
1.4 markus 37: void *new_ptr;
1.1 deraadt 38:
1.12 deraadt 39: if (new_size == 0)
1.13 markus 40: fatal("xrealloc: zero size");
1.4 markus 41: if (ptr == NULL)
1.15 deraadt 42: new_ptr = malloc(new_size);
43: else
44: new_ptr = realloc(ptr, new_size);
1.4 markus 45: if (new_ptr == NULL)
1.14 itojun 46: fatal("xrealloc: out of memory (new_size %lu bytes)", (u_long) new_size);
1.4 markus 47: return new_ptr;
1.1 deraadt 48: }
49:
1.6 markus 50: void
1.4 markus 51: xfree(void *ptr)
1.1 deraadt 52: {
1.4 markus 53: if (ptr == NULL)
54: fatal("xfree: NULL pointer given as argument");
55: free(ptr);
1.1 deraadt 56: }
57:
1.4 markus 58: char *
59: xstrdup(const char *str)
1.1 deraadt 60: {
1.15.2.1! jason 61: size_t len;
1.12 deraadt 62: char *cp;
1.2 deraadt 63:
1.15.2.1! jason 64: len = strlen(str) + 1;
1.12 deraadt 65: cp = xmalloc(len);
1.4 markus 66: strlcpy(cp, str, len);
67: return cp;
1.1 deraadt 68: }