f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
111 lines
2.1 KiB
C
111 lines
2.1 KiB
C
/* $OpenBSD: xmalloc.c,v 1.2 2009/06/07 08:39:13 ray Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Versions of malloc and friends that check their results, and never return
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* failure (they call fatal if they encounter an error).
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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*/
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#include <err.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "xmalloc.h"
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void *
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xmalloc(size_t size)
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{
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void *ptr;
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if (size == 0)
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errx(2, NULL);
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ptr = malloc(size);
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if (ptr == NULL)
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errx(2, NULL);
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return ptr;
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}
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void *
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xcalloc(size_t nmemb, size_t size)
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{
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void *ptr;
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if (size == 0 || nmemb == 0)
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errx(1, "xcalloc: zero size");
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if (SIZE_MAX / nmemb < size)
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errx(1, "xcalloc: nmemb * size > SIZE_MAX");
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ptr = calloc(nmemb, size);
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if (ptr == NULL)
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errx(1, "xcalloc: out of memory (allocating %lu bytes)",
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(u_long)(size * nmemb));
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return ptr;
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}
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void *
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xrealloc(void *ptr, size_t nmemb, size_t size)
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{
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void *new_ptr;
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size_t new_size = nmemb * size;
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if (new_size == 0)
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errx(2, NULL);
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if (SIZE_MAX / nmemb < size)
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errx(2, NULL);
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if (ptr == NULL)
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new_ptr = malloc(new_size);
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else
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new_ptr = realloc(ptr, new_size);
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if (new_ptr == NULL)
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errx(2, NULL);
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return new_ptr;
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}
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void
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xfree(void *ptr)
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{
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if (ptr == NULL)
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errx(2, NULL);
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free(ptr);
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}
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char *
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xstrdup(const char *str)
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{
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size_t len;
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char *cp;
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len = strlen(str) + 1;
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cp = xmalloc(len);
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strlcpy(cp, str, len);
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return cp;
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}
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#if 0
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int
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xasprintf(char **ret, const char *fmt, ...)
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{
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va_list ap;
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int i;
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va_start(ap, fmt);
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i = vasprintf(ret, fmt, ap);
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va_end(ap);
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if (i < 0 || *ret == NULL)
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errx(2, NULL);
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return (i);
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}
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#endif
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