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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 remove UBI volumes.
*
* Authors: Artem B. Bityutskiy <dedekind@infradead.org>
* Frank Haverkamp <haver@vnet.ibm.com>
*/
#include <stdio.h>
#include <stdint.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <libubi.h>
#include "common.h"
#define PROGRAM_VERSION "1.5"
#define PROGRAM_NAME "ubirmvol"
/* The variables below is set by command line arguments */
struct args {
int vol_id;
char node[MAX_NODE_LEN + 2];
};
static struct args myargs = {
.vol_id = -1,
};
static const char *doc = "Version: " PROGRAM_VERSION "\n"
PROGRAM_NAME " - a tool to remove UBI volumes.";
static const char *optionsstr =
" -n, --vol_id=<volume id> volume ID to remove\n"
" -h, --help print help message\n"
" -V, --version print program version";
static const char *usage =
"Usage: " PROGRAM_NAME " <UBI device node file name> [-n <volume id>] [--vol_id=<volume id>] [-h] [--help]\n\n"
"Example: " PROGRAM_NAME "/dev/ubi0 -n 1 - remove UBI volume 1 from UBI device corresponding\n"
" to the node file /dev/ubi0.";
static const struct option long_options[] = {
{ .name = "vol_id", .has_arg = 1, .flag = NULL, .val = 'n' },
{ .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' },
{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
{ NULL, 0, NULL, 0},
};
static int parse_opt(int argc, char * const argv[], struct args *args)
{
char *endp;
while (1) {
int key;
key = getopt_long(argc, argv, "n:hV", long_options, NULL);
if (key == -1)
break;
switch (key) {
case 'n':
args->vol_id = strtoul(optarg, &endp, 0);
if (*endp != '\0' || endp == optarg || args->vol_id < 0) {
errmsg("bad volume ID: " "\"%s\"", optarg);
return -1;
}
break;
case 'h':
fprintf(stderr, "%s\n\n", doc);
fprintf(stderr, "%s\n\n", usage);
fprintf(stderr, "%s\n", optionsstr);
exit(0);
case 'V':
fprintf(stderr, "%s\n", PROGRAM_VERSION);
exit(0);
case ':':
errmsg("parameter is missing");
goto out;
default:
fprintf(stderr, "Use -h for help\n");
exit(-1);
}
}
return 0;
out:
return -1;
}
static int param_sanity_check(struct args *args)
{
if (strlen(args->node) > MAX_NODE_LEN) {
errmsg("too long device node name: \"%s\" (%d characters), max. is %d",
args->node, strlen(args->node), MAX_NODE_LEN);
return -1;
}
if (args->vol_id == -1) {
errmsg("volume ID is was not specified");
return -1;
}
return 0;
}
int main(int argc, char * const argv[])
{
int err;
libubi_t libubi;
strncpy(myargs.node, argv[1], MAX_NODE_LEN + 1);
if (argc < 2) {
errmsg("UBI device name was not specified (use -h for help)");
return -1;
}
if (argc < 3) {
errmsg("too few arguments (use -h for help)");
return -1;
}
if (argv[1][0] == '-') {
errmsg("UBI device was not specified (use -h for help)");
return -1;
}
if (argv[2][0] != '-') {
errmsg("incorrect arguments, use -h for help");
return -1;
}
err = parse_opt(argc, argv, &myargs);
if (err)
return -1;
libubi = libubi_open();
if (libubi == NULL) {
errmsg("cannot open libubi");
perror("libubi_open");
return -1;
}
err = param_sanity_check(&myargs);
if (err)
goto out_libubi;
err = ubi_rmvol(libubi, myargs.node, myargs.vol_id);
if (err) {
errmsg("cannot UBI remove volume");
perror("ubi_rmvol");
goto out_libubi;
}
libubi_close(libubi);
return 0;
out_libubi:
libubi_close(libubi);
return -1;
}
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