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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.
*
* Author: Artem B. Bityutskiy <dedekind@linutronix.de>
* Frank Haverkamp <haver@vnet.ibm.com>
*
* 1.1 Reworked the userinterface to use argp.
* 1.2 Removed argp because we want to use uClibc.
* 1.3 Minor cleanups
* 1.4 Use a different libubi
*/
#include <stdio.h>
#include <stdint.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <config.h>
#include <libubi.h>
#define PROGRAM_VERSION "1.4"
/*
* The below variables are set by command line options.
*/
struct args {
int devn;
int vol_id;
char node[256];
/* special stuff needed to get additional arguments */
char *arg1;
char **options; /* [STRING...] */
};
static struct args myargs = {
.devn = -1,
.vol_id = -1,
.arg1 = NULL,
.options = NULL,
};
static int param_sanity_check(struct args *args, libubi_t libubi);
static char doc[] = "\nVersion: " PROGRAM_VERSION "\n\t"
BUILD_OS" "BUILD_CPU" at "__DATE__" "__TIME__"\n"
"\nMake UBI Volume.\n";
static const char *optionsstr =
" -d, --devn=<devn> UBI device\n"
" -n, --vol_id=<volume id> UBI volume id, if not specified, the volume ID\n"
" will be assigned automatically\n"
" -?, --help Give this help list\n"
" --usage Give a short usage message\n"
" -V, --version Print program version\n";
static const char *usage =
"Usage: ubirmvol [-?V] [-d <devn>] [-n <volume id>] [--devn=<devn>]\n"
" [--vol_id=<volume id>] [--help] [--usage] [--version]\n";
struct option long_options[] = {
{ .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' },
{ .name = "vol_id", .has_arg = 1, .flag = NULL, .val = 'n' },
{ .name = "help", .has_arg = 0, .flag = NULL, .val = '?' },
{ .name = "usage", .has_arg = 0, .flag = NULL, .val = 0 },
{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
{ NULL, 0, NULL, 0}
};
/*
* @brief Parse the arguments passed into the test case.
*
* @param argc The number of arguments
* @param argv The list of arguments
* @param args Pointer to argument structure
*
* @return error
*
*/
static int
parse_opt(int argc, char **argv, struct args *args)
{
char *endp;
while (1) {
int key;
key = getopt_long(argc, argv, "d:n:?V", long_options, NULL);
if (key == -1)
break;
switch (key) {
case 'd': /* --devn=<device number> */
args->devn = strtoul(optarg, &endp, 0);
if (*endp != '\0' || endp == optarg ||
args->devn < 0) {
fprintf(stderr,
"Bad UBI device number: "
"\"%s\"\n", optarg);
goto out;
}
sprintf(args->node, "/dev/ubi%d", args->devn);
break;
case 'n': /* --volid=<volume id> */
args->vol_id = strtoul(optarg, &endp, 0);
if (*endp != '\0' || endp == optarg ||
(args->vol_id < 0 &&
args->vol_id != UBI_DYNAMIC_VOLUME)) {
fprintf(stderr, "Bad volume ID: "
"\"%s\"\n", optarg);
goto out;
}
break;
case ':':
fprintf(stderr, "Parameter is missing\n");
goto out;
case '?': /* help */
fprintf(stderr,
"Usage: ubirmvol [OPTION...]\n");
fprintf(stderr, "%s", doc);
fprintf(stderr, "%s", optionsstr);
fprintf(stderr, "\nReport bugs to %s\n",
PACKAGE_BUGREPORT);
exit(0);
break;
case 'V':
fprintf(stderr, "%s\n", PROGRAM_VERSION);
exit(0);
break;
default:
fprintf(stderr, "%s", usage);
exit(-1);
}
}
return 0;
out:
return -1;
}
static int param_sanity_check(struct args *args, libubi_t libubi)
{
int err;
struct ubi_info ubi;
if (args->vol_id == -1) {
fprintf(stderr, "Volume ID was not specified\n");
goto out;
}
err = ubi_get_info(libubi, &ubi);
if (err)
return -1;
if (args->devn >= (int)ubi.dev_count) {
fprintf(stderr, "Device %d does not exist\n", args->devn);
goto out;
}
return 0;
out:
errno = EINVAL;
return -1;
}
int main(int argc, char * const argv[])
{
int err, old_errno;
libubi_t libubi;
err = parse_opt(argc, (char **)argv, &myargs);
if (err)
return err == 1 ? 0 : -1;
if (myargs.devn == -1) {
fprintf(stderr, "Device number was not specified\n");
fprintf(stderr, "Use -h option for help\n");
return -1;
}
libubi = libubi_open();
if (libubi == NULL) {
perror("Cannot open libubi");
return -1;
}
err = param_sanity_check(&myargs, libubi);
if (err) {
perror("Input parameters check");
fprintf(stderr, "Use -h option for help\n");
goto out_libubi;
}
err = ubi_rmvol(libubi, myargs.node, myargs.vol_id);
old_errno = errno;
if (err < 0) {
perror("Cannot remove volume");
fprintf(stderr, " err=%d errno=%d\n", err, old_errno);
goto out_libubi;
}
libubi_close(libubi);
return 0;
out_libubi:
libubi_close(libubi);
return -1;
}
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