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/*
* Copyright (C) 2008-2015, Parallels, Inc. All rights reserved.
*
* 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
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <malloc.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <limits.h>
#include <getopt.h>
#include <linux/types.h>
#include <string.h>
#include "ploop.h"
#include "common.h"
static void usage(void)
{
fprintf(stderr, "Usage: ploop merge -d DEVICE [-l LEVEL[..TOP_LEVEL]] [-n NEW_DELTA]\n"
" ploop merge [-f raw] [-n NEW_DELTA] DELTAS_TO_MERGE BASE_DELTA\n"
);
}
int plooptool_merge(int argc, char ** argv)
{
int raw = 0;
int start_level = 0;
int end_level = 0;
int merge_top = 0;
char *device = NULL;
char **names = NULL;
const char *new_delta = NULL;
int i, f, ret;
while ((i = getopt(argc, argv, "f:d:l:n:u:A")) != EOF) {
switch (i) {
case 'f':
f = parse_format_opt(optarg);
if (f < 0) {
usage();
return SYSEXIT_PARAM;
}
raw = (f == PLOOP_RAW_MODE);
break;
case 'd':
device = optarg;
break;
case 'l':
if (sscanf(optarg, "%d..%d", &start_level, &end_level) != 2) {
if (sscanf(optarg, "%d", &start_level) != 1) {
usage();
return SYSEXIT_PARAM;
}
end_level = start_level + 1;
}
if (start_level >= end_level || start_level < 0) {
usage();
return SYSEXIT_PARAM;
}
break;
case 'n':
new_delta = optarg;
break;
case 'u':
case 'A':
/* ignore */
break;
default:
usage();
return SYSEXIT_PARAM;
}
}
argc -= optind;
argv += optind;
if (argc == 1 && is_xml_fname(argv[0])) {
fprintf(stderr, "Please use ploop snapshot-merge command\n");
return SYSEXIT_PARAM;
} else {
if (device == NULL) {
if (argc < 2) {
usage();
return SYSEXIT_PARAM;
}
end_level = argc;
names = argv;
} else {
struct merge_info info = {};
if (argc || raw) {
usage();
return SYSEXIT_PARAM;
}
info.start_level = start_level;
info.end_level = end_level;
if ((ret = get_delta_info(device, &info)))
return ret;
start_level = info.start_level;
end_level = info.end_level;
raw = info.raw;
names = info.names;
merge_top = info.merge_top;
}
ret = merge_image(device, start_level, end_level, raw, merge_top, names, new_delta);
}
return ret;
}
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