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/* 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 (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. */
//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();
}
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