From 872138de50b1c5bbf105b0243f5778fcb02b310b Mon Sep 17 00:00:00 2001 From: Mark Whitley Date: Mon, 9 Oct 2000 18:56:47 +0000 Subject: Added cmp and readlink applets from Matt Kraai. --- miscutils/readlink.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 miscutils/readlink.c (limited to 'miscutils/readlink.c') diff --git a/miscutils/readlink.c b/miscutils/readlink.c new file mode 100644 index 000000000..5a798c0ea --- /dev/null +++ b/miscutils/readlink.c @@ -0,0 +1,49 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini readlink implementation for busybox + * + * + * Copyright (C) 2000 by Lineo, inc. + * Written by Matt Kraai + * + * 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 "busybox.h" +#include +#include + +int readlink_main(int argc, char **argv) +{ + char *buf = NULL; + int bufsize = 128, size = 128; + + if (argc != 2) + usage(readlink_usage); + + while (bufsize < size + 1) { + bufsize *= 2; + buf = xrealloc(buf, bufsize); + size = readlink(argv[1], buf, bufsize); + if (size == -1) + fatalError("%s: %s\n", argv[1], strerror(errno)); + } + + buf[size] = '\0'; + puts(buf); + + return EXIT_SUCCESS; +} -- cgit v1.2.3