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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.
*/
#include <argp.h>
#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 VERSION "1.1"
/*
* The below variables are set by command line options.
*/
struct args {
int devn;
int vol_id;
/* 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, ubi_lib_t lib);
static error_t parse_opt(int key, char *optarg, struct argp_state *state);
const char *argp_program_bug_address = PACKAGE_BUGREPORT;
static char doc[] = "\nVersion: " VERSION "\n\t"
BUILD_OS" "BUILD_CPU" at "__DATE__" "__TIME__"\n"
"\nMake UBI Volume.\n";
static struct argp_option options[] = {
{ .name = "devn",
.key = 'd',
.arg = "<devn>",
.flags = 0,
.doc = "UBI device",
.group = OPTION_ARG_OPTIONAL },
{ .name = "vol_id",
.key = 'n',
.arg = "<volume id>",
.flags = 0,
.doc = "UBI volume id, if not specified, the volume ID will be "
"assigned automatically",
.group = OPTION_ARG_OPTIONAL },
{ .name = NULL, .key = 0, .arg = NULL, .flags = 0,
.doc = NULL, .group = 0 },
};
static struct argp argp = {
.options = options,
.parser = parse_opt,
.args_doc = 0,
.doc = doc,
.children = NULL,
.help_filter = NULL,
.argp_domain = NULL,
};
/*
* @brief Parse the arguments passed into the test case.
*
* @param key The parameter.
* @param arg Argument passed to parameter.
* @param state Location to put information on parameters.
*
* @return error
*
* Get the `input' argument from `argp_parse', which we know is a
* pointer to our arguments structure.
*/
static error_t
parse_opt(int key, char *optarg, struct argp_state *state)
{
char *endp;
struct args *args = state->input;
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;
}
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 ARGP_KEY_NO_ARGS:
/* argp_usage(state); */
break;
case ARGP_KEY_ARG:
args->arg1 = optarg;
/* Now we consume all the rest of the arguments.
`state->next' is the index in `state->argv' of the
next argument to be parsed, which is the first STRING
we're interested in, so we can just use
`&state->argv[state->next]' as the value for
arguments->strings.
_In addition_, by setting `state->next' to the end
of the arguments, we can force argp to stop parsing
here and return. */
args->options = &state->argv[state->next];
state->next = state->argc;
break;
case ARGP_KEY_END:
/* argp_usage(state); */
break;
default:
return(ARGP_ERR_UNKNOWN);
}
return 0;
out:
return(ARGP_ERR_UNKNOWN);
}
static int param_sanity_check(struct args *args, ubi_lib_t lib)
{
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(lib, &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;
ubi_lib_t lib;
err = argp_parse(&argp, argc, (char **)argv, ARGP_IN_ORDER, 0,
&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;
}
err = ubi_open(&lib);
if (err) {
perror("Cannot open libubi");
return -1;
}
err = param_sanity_check(&myargs, lib);
if (err) {
perror("Input parameters check");
fprintf(stderr, "Use -h option for help\n");
goto out_libubi;
}
err = ubi_rmvol(lib, myargs.devn, 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;
}
return 0;
out_libubi:
ubi_close(&lib);
return -1;
}
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