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/*
* Copyright (c) International Business Machines Corp., 2001
*
* 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
* (at your option) 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Module: LvmUtils
* File: evms_vgremove.c
*
* Emulates LVM's 'vgremove' utility using the EVMS Engine. All options
* and several status messages are based on the original vgremove command
* from Heinz Mauelshagen and Sistina Software (www.sistina.com).
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <libgen.h>
#include <ctype.h>
#include <frontend.h>
typedef struct cmd_options_s {
int debug;
int help;
int verbose;
int version;
} cmd_options_t;
static char * cmd = NULL;
static cmd_options_t opts;
#include "helpers/get_container_handle.c"
#include "helpers/open_engine.c"
#include "helpers/remove_duplicates.c"
static int showheader( void )
{
// VERSION and DATE are defined in the top-level make.rules
printf("Enterprise Volume Management System\n");
printf("International Business Machines %s\n", DATE);
printf("LVM Emulation Utilities %s\n\n", VERSION);
printf("%s -- Volume Group Remove\n",cmd);
return 0;
}
static int showhelp( void )
{
showheader();
printf("Synopsis:\n");
printf("---------\n\n");
printf("%s\n", cmd);
printf("\t[-d/--debug]\n");
printf("\t[-h/--help]\n");
printf("\t[-v/--verbose]\n");
printf("\t[-V/--version]\n");
printf("\tVolumeGroupName [VolumeGroupName...]\n");
return 0;
}
static int parse_options( int argc,
char ** argv )
{
int c;
char * short_opts = "dh?vV";
struct option long_opts[] = {
{ "debug", no_argument, NULL, 'd'},
{ "help", no_argument, NULL, 'h'},
{ "verbose", no_argument, NULL, 'v'},
{ "version", no_argument, NULL, 'V'},
{ NULL, 0, NULL, 0} };
while ( (c = getopt_long(argc, argv, short_opts,
long_opts, NULL)) != EOF ) {
switch (c) {
case 'd':
opts.debug++;
opts.verbose++;
break;
case 'h':
case '?':
opts.help++;
break;
case 'v':
opts.verbose++;
break;
case 'V':
opts.version++;
break;
default:
printf("%s -- unrecognized option \"%c\"\n\n", cmd, c);
return EINVAL;
}
}
return 0;
}
int main( int argc, char *argv[] )
{
object_handle_t container;
char * vg_names[256] = {0};
int number_of_vgs;
int log_level = DEFAULT;
int i, rc;
memset(&opts, 0, sizeof(cmd_options_t));
cmd = basename(argv[0]);
// Get the command line options.
rc = parse_options(argc, argv);
if (rc) {
showhelp();
return rc;
}
if ( opts.help ) {
showhelp();
return 0;
}
if ( opts.version ) {
showheader();
return 0;
}
if ( opts.verbose ) {
log_level = DEBUG;
}
if ( opts.debug ) {
log_level = ENTRY_EXIT;
}
// Check for volume group name.
if ( optind == argc ) {
printf("%s -- please enter a volume group name\n\n", cmd);
return EINVAL;
}
number_of_vgs = argc - optind;
// Copy the VG names from the command line, detecting any duplicates.
rc = remove_duplicates(&argv[optind], vg_names, number_of_vgs);
if (rc) {
printf("%s -- Duplicate VGs specified. Please only specify each VG once\n", cmd);
return rc;
}
// Open the EVMS Engine.
rc = open_engine(ENGINE_READWRITE, log_level);
if (rc) {
return rc;
}
// Now we can actually remove each volume group, one by one. For now, if
// any one fails, exit without committing, so nothing is changed.
for ( i = 0; i < number_of_vgs; i++ ) {
// Get the handle for the group to be deleted.
rc = get_container_handle(vg_names[i], &container);
if (rc) {
evms_close_engine();
return rc;
}
// Perform the removal.
rc = evms_destroy(container);
if (rc) {
printf("%s -- Error removing container %s (%d)\n", cmd, vg_names[i], rc);
evms_close_engine();
return rc;
}
printf("%s -- volume group \"%s\" successfully removed\n", cmd, vg_names[i]);
}
// Write everything to disk.
rc = evms_commit_changes(NULL);
if (rc) {
printf("%s -- Error committing changes to disk (%d)\n", cmd, rc);
evms_close_engine();
return rc;
}
if ( opts.verbose ) {
printf("%s -- All VG changes committed to disk\n", cmd);
}
evms_close_engine();
return 0;
}
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