43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini hostid implementation for busybox
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*
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* Copyright (C) 2000 Edward Betts <edward@debian.org>.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config HOSTID
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//config: bool "hostid (286 bytes)"
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//config: default y
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//config: help
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//config: hostid prints the numeric identifier (in hexadecimal) for
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//config: the current host.
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//applet:IF_HOSTID(APPLET_NOFORK(hostid, hostid, BB_DIR_USR_BIN, BB_SUID_DROP, hostid))
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//kbuild:lib-$(CONFIG_HOSTID) += hostid.o
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/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
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//usage:#define hostid_trivial_usage
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//usage: ""
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//usage:#define hostid_full_usage "\n\n"
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//usage: "Print out a unique 32-bit identifier for the machine"
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#include "libbb.h"
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/* This is a NOFORK applet. Be very careful! */
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int hostid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int hostid_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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{
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if (argv[1]) {
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bb_show_usage();
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}
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/* POSIX says gethostid returns a "32-bit identifier" */
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printf("%08x\n", (unsigned)(uint32_t)gethostid());
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return fflush_all();
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}
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