iPXE
ntp_cmd.c
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00001 /*
00002  * Copyright (C) 2016 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301, USA.
00018  *
00019  * You can also choose to distribute this program under the terms of
00020  * the Unmodified Binary Distribution Licence (as given in the file
00021  * COPYING.UBDL), provided that you have satisfied its requirements.
00022  */
00023 
00024 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
00025 
00026 #include <stdio.h>
00027 #include <string.h>
00028 #include <getopt.h>
00029 #include <ipxe/command.h>
00030 #include <ipxe/parseopt.h>
00031 #include <usr/ntpmgmt.h>
00032 
00033 /** @file
00034  *
00035  * NTP commands
00036  *
00037  */
00038 
00039 /** "ntp" options */
00040 struct ntp_options {};
00041 
00042 /** "ntp" option list */
00043 static struct option_descriptor ntp_opts[] = {};
00044 
00045 /** "ntp" command descriptor */
00046 static struct command_descriptor ntp_cmd =
00047         COMMAND_DESC ( struct ntp_options, ntp_opts, 1, 1, "<server>" );
00048 
00049 /**
00050  * "ntp" command
00051  *
00052  * @v argc              Argument count
00053  * @v argv              Argument list
00054  * @ret rc              Return status code
00055  */
00056 static int ntp_exec ( int argc, char **argv ) {
00057         struct ntp_options opts;
00058         const char *hostname;
00059         int rc;
00060 
00061         /* Parse options */
00062         if ( ( rc = parse_options ( argc, argv, &ntp_cmd, &opts ) ) != 0 )
00063                 return rc;
00064 
00065         /* Parse hostname */
00066         hostname = argv[optind];
00067 
00068         /* Get time and date via NTP */
00069         if ( ( rc = ntp ( hostname ) ) != 0 ) {
00070                 printf ( "Could not get time and date: %s\n", strerror ( rc ) );
00071                 return rc;
00072         }
00073 
00074         return 0;
00075 }
00076 
00077 /** NTP command */
00078 struct command ntp_command __command = {
00079         .name = "ntp",
00080         .exec = ntp_exec,
00081 };