| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini hostid implementation for busybox |
| * |
| * Copyright (C) 2000 Edward Betts <edward@debian.org>. |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| */ |
| //config:config HOSTID |
| //config: bool "hostid" |
| //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. */ |
| |
| //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 **argv) MAIN_EXTERNALLY_VISIBLE; |
| int hostid_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) |
| { |
| if (argv[1]) { |
| bb_show_usage(); |
| } |
| |
| /* POSIX says gethostid returns a "32-bit identifier" */ |
| printf("%08x\n", (unsigned)(uint32_t)gethostid()); |
| |
| return fflush_all(); |
| } |