| /* vi: set sw=4 ts=4: */ |
| /* |
| * Utility routines. |
| * |
| * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org> |
| * |
| * 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 |
| */ |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include "libbb.h" |
| |
| |
| #ifndef DMALLOC |
| extern void *xmalloc(size_t size) |
| { |
| void *ptr = malloc(size); |
| if (ptr == NULL && size != 0) |
| error_msg_and_die(memory_exhausted); |
| return ptr; |
| } |
| |
| extern void *xrealloc(void *ptr, size_t size) |
| { |
| ptr = realloc(ptr, size); |
| if (ptr == NULL && size != 0) |
| error_msg_and_die(memory_exhausted); |
| return ptr; |
| } |
| |
| extern void *xcalloc(size_t nmemb, size_t size) |
| { |
| void *ptr = calloc(nmemb, size); |
| if (ptr == NULL && nmemb != 0 && size != 0) |
| 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; |
| } |
| |
| extern int xopen(const char *pathname, int flags) |
| { |
| int ret; |
| |
| ret = open(pathname, flags); |
| if (ret == -1) { |
| perror_msg_and_die("%s", pathname); |
| } |
| return ret; |
| } |
| |
| extern ssize_t xread(int fd, void *buf, size_t count) |
| { |
| ssize_t size; |
| |
| size = read(fd, buf, count); |
| if (size == -1) { |
| perror_msg_and_die("Read error"); |
| } |
| return(size); |
| } |
| |
| extern void xread_all(int fd, void *buf, size_t count) |
| { |
| ssize_t size; |
| |
| size = xread(fd, buf, count); |
| if (size != count) { |
| error_msg_and_die("Short read"); |
| } |
| return; |
| } |
| |
| extern ssize_t xread_all_eof(int fd, void *buf, size_t count) |
| { |
| ssize_t size; |
| |
| size = xread(fd, buf, count); |
| if ((size != 0) && (size != count)) { |
| error_msg_and_die("Short read"); |
| } |
| return(size); |
| } |
| |
| extern unsigned char xread_char(int fd) |
| { |
| char tmp; |
| |
| xread_all(fd, &tmp, 1); |
| |
| return(tmp); |
| } |
| |
| /* Stupid gcc always includes its own builtin strlen()... */ |
| #undef strlen |
| size_t xstrlen(const char *string) |
| { |
| return(strlen(string)); |
| } |
| |
| /* END CODE */ |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |