/* vi: set sw=4 ts=4: */ /* * Utility routines. * * Copyright (C) tons of folks. Tracking down who wrote what * isn't something I'm going to worry about... If you wrote something * here, please feel free to acknowledge your work. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Based in part on code from sash, Copyright (c) 1999 by David I. Bell * Permission has been granted to redistribute this code under the GPL. * */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include "libbb.h" #ifndef DMALLOC extern void *xmalloc(size_t size) { void *ptr = malloc(size); if (!ptr) error_msg_and_die(memory_exhausted); return ptr; } extern void *xrealloc(void *old, size_t size) { void *ptr; /* SuS2 says "If size is 0 and ptr is not a null pointer, the * object pointed to is freed." Do that here, in case realloc * returns a NULL, since we don't want to choke in that case. */ if (size==0 && old) { free(old); return NULL; } ptr = realloc(old, size); if (!ptr) error_msg_and_die(memory_exhausted); return ptr; } extern void *xcalloc(size_t nmemb, size_t size) { void *ptr = calloc(nmemb, size); if (!ptr) error_msg_and_die(memory_exhausted); return ptr; } extern char * xstrdup (const char *s) { char *t; if (s == NULL) return NULL; t = strdup (s); if (t == NULL) error_msg_and_die(memory_exhausted); return t; } #endif extern char * xstrndup (const char *s, int n) { char *t; if (s == NULL) error_msg_and_die("xstrndup bug"); t = xmalloc(++n); return safe_strncpy(t,s,n); } FILE *xfopen(const char *path, const char *mode) { FILE *fp; if ((fp = fopen(path, mode)) == NULL) perror_msg_and_die("%s", path); return fp; } /* END CODE */ /* Local Variables: c-file-style: "linux" c-basic-offset: 4 tab-width: 4 End: */