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[cmdline] Add "sync" command

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Add "sync" command (loosely based on the Unix "sync"), which will wait
for any pending operations to complete.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2012-06-09 19:00:04 +01:00
parent af47789ef2
commit addf699c86
3 changed files with 86 additions and 0 deletions
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3
src/config/config.c
View File

@ -241,6 +241,9 @@ REQUIRE_OBJECT ( reboot_cmd );
#ifdef CPUID_CMD
REQUIRE_OBJECT ( cpuid_cmd );
#endif
#ifdef SYNC_CMD
REQUIRE_OBJECT ( sync_cmd );
#endif
/*
* Drag in miscellaneous objects

1
src/config/general.h
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@ -117,6 +117,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define SANBOOT_CMD /* SAN boot commands */
#define MENU_CMD /* Menu commands */
#define LOGIN_CMD /* Login command */
#define SYNC_CMD /* Sync command */
//#define TIME_CMD /* Time commands */
//#define DIGEST_CMD /* Image crypto digest commands */
//#define LOTEST_CMD /* Loopback testing commands */

82
src/hci/commands/sync_cmd.c Normal file
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@ -0,0 +1,82 @@
/*
* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <string.h>
#include <stdio.h>
#include <getopt.h>
#include <ipxe/command.h>
#include <ipxe/parseopt.h>
#include <ipxe/timer.h>
#include <ipxe/pending.h>
/** @file
*
* "sync" command
*
*/
/** "sync" options */
struct sync_options {
/** Timeout */
unsigned int timeout;
};
/** "sync" option list */
static struct option_descriptor sync_opts[] = {
OPTION_DESC ( "timeout", 't', required_argument,
struct sync_options, timeout, parse_integer ),
};
/** "sync" command descriptor */
static struct command_descriptor sync_cmd =
COMMAND_DESC ( struct sync_options, sync_opts, 0, 0,
"[--timeout <timeout>]" );
/**
* "sync" command
*
* @v argc Argument count
* @v argv Argument list
* @ret rc Return status code
*/
static int sync_exec ( int argc, char **argv ) {
struct sync_options opts;
unsigned long timeout;
int rc;
/* Parse options */
if ( ( rc = parse_options ( argc, argv, &sync_cmd, &opts ) ) != 0 )
return rc;
/* Wait for pending operations to complete */
timeout = ( ( opts.timeout * TICKS_PER_SEC ) / 1000 );
if ( ( rc = pending_wait ( timeout ) ) != 0 ) {
printf ( "Operations did not complete: %s\n", strerror ( rc ) );
return rc;
}
return 0;
}
/** Sync commands */
struct command sync_command __command = {
.name = "sync",
.exec = sync_exec,
};