159 lines
3.0 KiB
C
159 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "libbb.h"
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#ifndef DMALLOC
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extern void *xmalloc(size_t size)
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{
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void *ptr = malloc(size);
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if (ptr == NULL && size != 0)
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error_msg_and_die(memory_exhausted);
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return ptr;
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}
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extern void *xrealloc(void *ptr, size_t size)
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{
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ptr = realloc(ptr, size);
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if (ptr == NULL && size != 0)
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error_msg_and_die(memory_exhausted);
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return ptr;
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}
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extern void *xcalloc(size_t nmemb, size_t size)
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{
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void *ptr = calloc(nmemb, size);
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if (ptr == NULL && nmemb != 0 && size != 0)
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error_msg_and_die(memory_exhausted);
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return ptr;
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}
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extern char * xstrdup (const char *s) {
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char *t;
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if (s == NULL)
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return NULL;
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t = strdup (s);
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if (t == NULL)
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error_msg_and_die(memory_exhausted);
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return t;
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}
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#endif
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extern char * xstrndup (const char *s, int n) {
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char *t;
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if (s == NULL)
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error_msg_and_die("xstrndup bug");
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t = xmalloc(++n);
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return safe_strncpy(t,s,n);
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}
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FILE *xfopen(const char *path, const char *mode)
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{
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FILE *fp;
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if ((fp = fopen(path, mode)) == NULL)
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perror_msg_and_die("%s", path);
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return fp;
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}
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extern int xopen(const char *pathname, int flags)
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{
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int ret;
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ret = open(pathname, flags);
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if (ret == -1) {
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perror_msg_and_die("%s", pathname);
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}
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return ret;
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}
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extern ssize_t xread(int fd, void *buf, size_t count)
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{
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ssize_t size;
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size = read(fd, buf, count);
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if (size == -1) {
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perror_msg_and_die("Read error");
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}
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return(size);
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}
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extern void xread_all(int fd, void *buf, size_t count)
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{
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ssize_t size;
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size = xread(fd, buf, count);
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if (size != count) {
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error_msg_and_die("Short read");
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}
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return;
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}
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extern ssize_t xread_all_eof(int fd, void *buf, size_t count)
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{
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ssize_t size;
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size = xread(fd, buf, count);
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if ((size != 0) && (size != count)) {
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error_msg_and_die("Short read");
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}
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return(size);
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}
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extern unsigned char xread_char(int fd)
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{
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char tmp;
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xread_all(fd, &tmp, 1);
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return(tmp);
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}
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/* Stupid gcc always includes its own builtin strlen()... */
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#undef strlen
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size_t xstrlen(const char *string)
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{
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return(strlen(string));
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}
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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