1 /*
2 * link implementation for busybox
3 *
4 * Copyright (C) 2017 Denys Vlasenko <vda.linux@googlemail.com>
5 *
6 * Licensed under GPLv2, see file LICENSE in this source tree.
7 */
8 //config:config LINK
9 //config: bool "link (3.2 kb)"
10 //config: default y
11 //config: help
12 //config: link creates hard links between files.
13
14 //applet:IF_LINK(APPLET_NOFORK(link, link, BB_DIR_BIN, BB_SUID_DROP, link))
15
16 //kbuild:lib-$(CONFIG_LINK) += link.o
17
18 //usage:#define link_trivial_usage
19 //usage: "FILE LINK"
20 //usage:#define link_full_usage "\n\n"
21 //usage: "Create hard LINK to FILE"
22
23 #include "libbb.h"
24
25 /* This is a NOFORK applet. Be very careful! */
26
27 int link_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
link_main(int argc UNUSED_PARAM,char ** argv)28 int link_main(int argc UNUSED_PARAM, char **argv)
29 {
30 getopt32(argv, "^" "" "\0" "=2");
31 argv += optind;
32 if (link(argv[0], argv[1]) != 0) {
33 /* shared message */
34 bb_perror_msg_and_die("can't create %slink '%s' to '%s'",
35 "hard", argv[1], argv[0]
36 );
37 }
38 return EXIT_SUCCESS;
39 }
40