*
* Copyright (C) 2000 Edward Betts <edward@debian.org>.
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config HOSTID
+//config: bool "hostid (247 bytes)"
+//config: default y
+//config: help
+//config: hostid prints the numeric identifier (in hexadecimal) for
+//config: the current host.
+
+//applet:IF_HOSTID(APPLET_NOFORK(hostid, hostid, BB_DIR_USR_BIN, BB_SUID_DROP, hostid))
+
+//kbuild:lib-$(CONFIG_HOSTID) += hostid.o
/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
-#include <stdlib.h>
-#include <unistd.h>
-#include "busybox.h"
+//usage:#define hostid_trivial_usage
+//usage: ""
+//usage:#define hostid_full_usage "\n\n"
+//usage: "Print out a unique 32-bit identifier for the machine"
+
+#include "libbb.h"
+
+/* This is a NOFORK applet. Be very careful! */
-int hostid_main(int argc, char ATTRIBUTE_UNUSED **argv)
+int hostid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int hostid_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
- if (argc > 1) {
+ if (argv[1]) {
bb_show_usage();
}
- bb_printf("%lx\n", gethostid());
+ /* POSIX says gethostid returns a "32-bit identifier" */
+ printf("%08x\n", (unsigned)(uint32_t)gethostid());
- bb_fflush_stdout_and_exit(EXIT_SUCCESS);
+ return fflush_all();
}