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Diffstat (limited to 'ubi-utils/ubirmvol.c')
| -rw-r--r-- | ubi-utils/ubirmvol.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/ubi-utils/ubirmvol.c b/ubi-utils/ubirmvol.c new file mode 100644 index 0000000..5725d90 --- /dev/null +++ b/ubi-utils/ubirmvol.c @@ -0,0 +1,211 @@ +/* + * 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 Bityutskiy <dedekind@infradead.org> + * Frank Haverkamp <haver@vnet.ibm.com> + */ + +#define PROGRAM_VERSION "1.1" +#define PROGRAM_NAME "ubirmvol" + +#include <stdio.h> +#include <stdint.h> +#include <getopt.h> +#include <stdlib.h> +#include <string.h> + +#include <libubi.h> +#include "common.h" + +/* The variables below are set by command line arguments */ +struct args { + int vol_id; + const char *node; + const char *name; +}; + +static struct args args = { + .vol_id = -1, +}; + +static const char doc[] = PROGRAM_NAME " version " PROGRAM_VERSION + " - a tool to remove UBI volumes."; + +static const char optionsstr[] = +"-n, --vol_id=<volume id> volume ID to remove\n" +"-N, --name=<volume name> volume name 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>]\n\n" +" [-N <volume name>] [--name=<volume name>] [-h] [--help]\n\n" +"Example: " PROGRAM_NAME "/dev/ubi0 -n 1 - remove UBI volume 1 from UBI device corresponding\n" +" to /dev/ubi0\n" +" " PROGRAM_NAME "/dev/ubi0 -N my_vol - remove UBI named \"my_vol\" from UBI device\n" +" corresponding to /dev/ubi0"; + +static const struct option long_options[] = { + { .name = "vol_id", .has_arg = 1, .flag = NULL, .val = 'n' }, + { .name = "name", .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 param_sanity_check(void) +{ + if (args.vol_id == -1 && !args.name) { + errmsg("please, specify either volume ID or volume name"); + return -1; + } + + if (args.vol_id != -1 && args.name) { + errmsg("please, specify either volume ID or volume name, not both"); + return -1; + } + + return 0; +} + +static int parse_opt(int argc, char * const argv[]) +{ + while (1) { + int key, error = 0; + + key = getopt_long(argc, argv, "n:N:h?V", long_options, NULL); + if (key == -1) + break; + + switch (key) { + + case 'n': + args.vol_id = simple_strtoul(optarg, &error); + if (error || args.vol_id < 0) { + errmsg("bad volume ID: " "\"%s\"", optarg); + return -1; + } + break; + + case 'N': + args.name = optarg; + break; + + case 'h': + case '?': + printf("%s\n\n", doc); + printf("%s\n\n", usage); + printf("%s\n", optionsstr); + exit(EXIT_SUCCESS); + + case 'V': + fprintf(stderr, "%s\n", PROGRAM_VERSION); + exit(EXIT_SUCCESS); + + case ':': + errmsg("parameter is missing"); + return -1; + + default: + fprintf(stderr, "Use -h for help\n"); + return -1; + } + } + + if (optind == argc) { + errmsg("UBI device name was not specified (use -h for help)"); + return -1; + } else if (optind != argc - 1) { + errmsg("more then one UBI device specified (use -h for help)"); + return -1; + } + + args.node = argv[optind]; + + if (param_sanity_check()) + return -1; + + return 0; +} + +int main(int argc, char * const argv[]) +{ + int err; + libubi_t libubi; + + err = parse_opt(argc, argv); + if (err) + return -1; + + 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; + } + + if (args.name) { + struct ubi_dev_info dev_info; + struct ubi_vol_info vol_info; + + 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; + } + + err = ubi_get_vol_info1_nm(libubi, dev_info.dev_num, + args.name, &vol_info); + if (err) { + sys_errmsg("cannot find UBI volume \"%s\"", args.name); + goto out_libubi; + } + + args.vol_id = vol_info.vol_id; + } + + err = ubi_rmvol(libubi, args.node, args.vol_id); + if (err) { + sys_errmsg("cannot UBI remove volume"); + goto out_libubi; + } + + libubi_close(libubi); + return 0; + +out_libubi: + libubi_close(libubi); + return -1; +} |