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Annotation of src/usr.bin/cvs/xmalloc.c, Revision 1.2

1.2     ! xsa         1: /*     $OpenBSD$ */
1.1       joris       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 xmalloc 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 <stdlib.h>
                     17: #include <string.h>
                     18:
                     19: #include "cvs.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 = xmalloc(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: }