*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config LN
+//config: bool "ln (4.5 kb)"
+//config: default y
+//config: help
+//config: ln is used to create hard or soft links between files.
+
+//applet:IF_LN(APPLET_NOEXEC(ln, ln, BB_DIR_BIN, BB_SUID_DROP, ln))
+
+//kbuild:lib-$(CONFIG_LN) += ln.o
/* BB_AUDIT SUSv3 compliant */
/* BB_AUDIT GNU options missing: -d, -F, -i, and -v. */
//usage: "\n -n Don't dereference symlinks - treat like normal file"
//usage: "\n -b Make a backup of the target (if exists) before link operation"
//usage: "\n -S suf Use suffix instead of ~ when making backup files"
+//usage: "\n -T 2nd arg must be a DIR"
+//usage: "\n -v Verbose"
//usage:
//usage:#define ln_example_usage
//usage: "$ ln -s BusyBox /tmp/ls\n"
/* This is a NOEXEC applet. Be very careful! */
-#define LN_SYMLINK 1
-#define LN_FORCE 2
-#define LN_NODEREFERENCE 4
-#define LN_BACKUP 8
-#define LN_SUFFIX 16
+#define LN_SYMLINK (1 << 0)
+#define LN_FORCE (1 << 1)
+#define LN_NODEREFERENCE (1 << 2)
+#define LN_BACKUP (1 << 3)
+#define LN_SUFFIX (1 << 4)
+#define LN_VERBOSE (1 << 5)
+#define LN_LINKFILE (1 << 6)
int ln_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ln_main(int argc, char **argv)
struct stat statbuf;
int (*link_func)(const char *, const char *);
- opt_complementary = "-1"; /* min one arg */
- opts = getopt32(argv, "sfnbS:", &suffix);
+ opts = getopt32(argv, "^" "sfnbS:vT" "\0" "-1", &suffix);
last = argv[argc - 1];
argv += optind;
+ argc -= optind;
+
+ if ((opts & LN_LINKFILE) && argc > 2) {
+ bb_error_msg_and_die("-T accepts 2 args max");
+ }
if (!argv[1]) {
/* "ln PATH/TO/FILE" -> "ln PATH/TO/FILE FILE" */
(opts & LN_NODEREFERENCE) ^ LN_NODEREFERENCE
)
) {
+ if (opts & LN_LINKFILE) {
+ bb_error_msg_and_die("'%s' is a directory", src);
+ }
src_name = xstrdup(*argv);
src = concat_path_file(src, bb_get_last_path_component_strip(src_name));
free(src_name);
link_func = symlink;
}
+ if (opts & LN_VERBOSE) {
+ printf("'%s' -> '%s'\n", src, *argv);
+ }
+
if (link_func(*argv, src) != 0) {
bb_simple_perror_msg(src);
status = EXIT_FAILURE;
}
free(src_name);
-
} while ((++argv)[1]);
return status;