| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini readlink implementation for busybox |
| * |
| * |
| * Copyright (C) 1999,2000,2001 by Lineo, inc. |
| * Written by Matt Kraai <kraai@alumni.carnegiemellon.edu> |
| * |
| * 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 <errno.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include "busybox.h" |
| |
| int readlink_main(int argc, char **argv) |
| { |
| char *buf = NULL; |
| int bufsize = 128, size = 128; |
| |
| if (argc != 2) |
| show_usage(); |
| |
| while (bufsize < size + 1) { |
| bufsize *= 2; |
| buf = xrealloc(buf, bufsize); |
| size = readlink(argv[1], buf, bufsize); |
| if (size == -1) |
| perror_msg_and_die("%s", argv[1]); |
| } |
| |
| buf[size] = '\0'; |
| puts(buf); |
| |
| return EXIT_SUCCESS; |
| } |