"Fossies" - the Fresh Open Source Software Archive

Member "scanssh-2.1/xmalloc.c" (14 Jul 2004, 1638 Bytes) of package /linux/privat/old/scanssh-2.1.tar.gz:

    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 <sys/types.h>
   16 #include <stdlib.h>
   17 #include <stdio.h>
   18 #include <err.h>
   19 #include <string.h>
   20 
   21 #include "config.h"
   22 
   23 void *
   24 xmalloc(size_t size)
   25 {
   26     void *ptr;
   27 
   28     if (size == 0)
   29         err(1,"xmalloc: zero size");
   30     ptr = malloc(size);
   31     if (ptr == NULL) {
   32         fprintf(stderr, 
   33             "xmalloc: out of memory (allocating %lu bytes)",
   34             (u_long) size);
   35         abort();
   36     }
   37     return ptr;
   38 }
   39 
   40 void *
   41 xrealloc(void *ptr, size_t new_size)
   42 {
   43     void *new_ptr;
   44 
   45     if (new_size == 0)
   46         err(1,"xrealloc: zero size");
   47     if (ptr == NULL)
   48         err(1,"xrealloc: NULL pointer given as argument");
   49     new_ptr = realloc(ptr, new_size);
   50     if (new_ptr == NULL)
   51         err(1,"xrealloc: out of memory (new_size %lu bytes)", (u_long) new_size);
   52     return new_ptr;
   53 }
   54 
   55 void
   56 xfree(void *ptr)
   57 {
   58     if (ptr == NULL)
   59         err(1,"xfree: NULL pointer given as argument");
   60     free(ptr);
   61 }
   62 
   63 char *
   64 xstrdup(const char *str)
   65 {
   66     size_t len = strlen(str) + 1;
   67     char *cp;
   68 
   69     if (len == 0)
   70         err(1,"xstrdup: zero size");
   71     cp = xmalloc(len);
   72     strlcpy(cp, str, len);
   73     return cp;
   74 }