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/*
* Copyright (c) International Business Machines Corp., 2006
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* An utility to create UBI volumes.
*
* Authors: Artem Bityutskiy <dedekind@infradead.org>
* Frank Haverkamp <haver@vnet.ibm.com>
*/
#define PROGRAM_VERSION "1.1"
#define PROGRAM_NAME "ubimkvol"
#include <stdio.h>
#include <stdint.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <libubi.h>
#include "common.h"
#include "ubiutils-common.h"
/* The variables below are set by command line arguments */
struct args {
int vol_id;
int vol_type;
long long bytes;
int lebs;
int alignment;
const char *name;
const char *node;
int maxavs;
};
static struct args args = {
.vol_type = UBI_DYNAMIC_VOLUME,
.bytes = -1,
.lebs = -1,
.alignment = 1,
.vol_id = UBI_VOL_NUM_AUTO,
};
static const char doc[] = PROGRAM_NAME " version " PROGRAM_VERSION
" - a tool to create UBI volumes.";
static const char optionsstr[] =
"-a, --alignment=<alignment> volume alignment (default is 1)\n"
"-n, --vol_id=<volume ID> UBI volume ID, if not specified, the volume ID\n"
" will be assigned automatically\n"
"-N, --name=<name> volume name\n"
"-s, --size=<bytes> volume size volume size in bytes, kilobytes (KiB)\n"
" or megabytes (MiB)\n"
"-S, --lebs=<LEBs count> alternative way to give volume size in logical\n"
" eraseblocks\n"
"-m, --maxavsize set volume size to maximum available size\n"
"-t, --type=<static|dynamic> volume type (dynamic, static), default is dynamic\n"
"-h, -?, --help print help message\n"
"-V, --version print program version";
static const char usage[] =
"Usage: " PROGRAM_NAME " <UBI device node file name> [-h] [-a <alignment>] [-n <volume ID>] [-N <name>]\n"
"\t\t\t[-s <bytes>] [-S <LEBs>] [-t <static|dynamic>] [-V] [-m]\n"
"\t\t\t[--alignment=<alignment>][--vol_id=<volume ID>] [--name=<name>]\n"
"\t\t\t[--size=<bytes>] [--lebs=<LEBs>] [--type=<static|dynamic>] [--help]\n"
"\t\t\t[--version] [--maxavsize]\n\n"
"Example: " PROGRAM_NAME " /dev/ubi0 -s 20MiB -N config_data - create a 20 Megabytes volume\n"
" named \"config_data\" on UBI device /dev/ubi0.";
static const struct option long_options[] = {
{ .name = "alignment", .has_arg = 1, .flag = NULL, .val = 'a' },
{ .name = "vol_id", .has_arg = 1, .flag = NULL, .val = 'n' },
{ .name = "name", .has_arg = 1, .flag = NULL, .val = 'N' },
{ .name = "size", .has_arg = 1, .flag = NULL, .val = 's' },
{ .name = "lebs", .has_arg = 1, .flag = NULL, .val = 'S' },
{ .name = "type", .has_arg = 1, .flag = NULL, .val = 't' },
{ .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' },
{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
{ .name = "maxavsize", .has_arg = 0, .flag = NULL, .val = 'm' },
{ NULL, 0, NULL, 0},
};
static int param_sanity_check(void)
{
int len;
if (args.bytes == -1 && !args.maxavs && args.lebs == -1)
return errmsg("volume size was not specified (use -h for help)");
if ((args.bytes != -1 && (args.maxavs || args.lebs != -1)) ||
(args.lebs != -1 && (args.maxavs || args.bytes != -1)) ||
(args.maxavs && (args.bytes != -1 || args.lebs != -1)))
return errmsg("size specified with more then one option");
if (args.name == NULL)
return errmsg("volume name was not specified (use -h for help)");
len = strlen(args.name);
if (len > UBI_MAX_VOLUME_NAME)
return errmsg("too long name (%d symbols), max is %d", len, UBI_MAX_VOLUME_NAME);
return 0;
}
static int parse_opt(int argc, char * const argv[])
{
while (1) {
int key, error = 0;
key = getopt_long(argc, argv, "a:n:N:s:S:t:h?Vm", long_options, NULL);
if (key == -1)
break;
switch (key) {
case 't':
if (!strcmp(optarg, "dynamic"))
args.vol_type = UBI_DYNAMIC_VOLUME;
else if (!strcmp(optarg, "static"))
args.vol_type = UBI_STATIC_VOLUME;
else
return errmsg("bad volume type: \"%s\"", optarg);
break;
case 's':
args.bytes = ubiutils_get_bytes(optarg);
if (args.bytes <= 0)
return errmsg("bad volume size: \"%s\"", optarg);
break;
case 'S':
args.lebs = simple_strtoull(optarg, &error);
if (error || args.lebs <= 0)
return errmsg("bad LEB count: \"%s\"", optarg);
break;
case 'a':
args.alignment = simple_strtoul(optarg, &error);
if (error || args.alignment <= 0)
return errmsg("bad volume alignment: \"%s\"", optarg);
break;
case 'n':
args.vol_id = simple_strtoul(optarg, &error);
if (error || args.vol_id < 0)
return errmsg("bad volume ID: " "\"%s\"", optarg);
break;
case 'N':
args.name = optarg;
break;
case 'h':
case '?':
fprintf(stderr, "%s\n\n", doc);
fprintf(stderr, "%s\n\n", usage);
fprintf(stderr, "%s\n", optionsstr);
exit(EXIT_SUCCESS);
case 'V':
fprintf(stderr, "%s\n", PROGRAM_VERSION);
exit(EXIT_SUCCESS);
case 'm':
args.maxavs = 1;
break;
case ':':
return errmsg("parameter is missing");
default:
fprintf(stderr, "Use -h for help\n");
return -1;
}
}
if (optind == argc)
return errmsg("UBI device name was not specified (use -h for help)");
else if (optind != argc - 1)
return errmsg("more then one UBI device specified (use -h for help)");
args.node = argv[optind];
if (param_sanity_check())
return -1;
return 0;
}
int main(int argc, char * const argv[])
{
int err;
libubi_t libubi;
struct ubi_dev_info dev_info;
struct ubi_vol_info vol_info;
struct ubi_mkvol_request req;
err = parse_opt(argc, argv);
if (err)
return err;
libubi = libubi_open();
if (!libubi) {
if (errno == 0)
return errmsg("UBI is not present in the system");
return sys_errmsg("cannot open libubi");
}
err = ubi_probe_node(libubi, args.node);
if (err == 2) {
errmsg("\"%s\" is an UBI volume node, not an UBI device node",
args.node);
goto out_libubi;
} else if (err < 0) {
if (errno == ENODEV)
errmsg("\"%s\" is not an UBI device node", args.node);
else
sys_errmsg("error while probing \"%s\"", args.node);
goto out_libubi;
}
err = ubi_get_dev_info(libubi, args.node, &dev_info);
if (err) {
sys_errmsg("cannot get information about UBI device \"%s\"",
args.node);
goto out_libubi;
}
if (dev_info.avail_bytes == 0) {
errmsg("UBI device does not have free logical eraseblocks");
goto out_libubi;
}
if (args.maxavs) {
args.bytes = dev_info.avail_bytes;
printf("Set volume size to %lld\n", args.bytes);
}
if (args.lebs != -1) {
args.bytes = dev_info.leb_size;
args.bytes -= dev_info.leb_size % args.alignment;
args.bytes *= args.lebs;
}
req.vol_id = args.vol_id;
req.alignment = args.alignment;
req.bytes = args.bytes;
req.vol_type = args.vol_type;
req.name = args.name;
err = ubi_mkvol(libubi, args.node, &req);
if (err < 0) {
sys_errmsg("cannot UBI create volume");
goto out_libubi;
}
args.vol_id = req.vol_id;
/* Print information about the created device */
err = ubi_get_vol_info1(libubi, dev_info.dev_num, args.vol_id, &vol_info);
if (err) {
sys_errmsg("cannot get information about newly created UBI volume");
goto out_libubi;
}
printf("Volume ID %d, size %d LEBs (", vol_info.vol_id, vol_info.rsvd_lebs);
ubiutils_print_bytes(vol_info.rsvd_bytes, 0);
printf("), LEB size ");
ubiutils_print_bytes(vol_info.leb_size, 1);
printf(", %s, name \"%s\", alignment %d\n",
req.vol_type == UBI_DYNAMIC_VOLUME ? "dynamic" : "static",
vol_info.name, vol_info.alignment);
libubi_close(libubi);
return 0;
out_libubi:
libubi_close(libubi);
return -1;
}
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