/* * 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 resize UBI volumes. * * Authors: Artem Bityutskiy <dedekind@infradead.org> * Frank Haverkamp <haver@vnet.ibm.com> */ #define PROGRAM_VERSION "1.1" #define PROGRAM_NAME "ubirsvol" #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; const char *node; const char *name; long long bytes; int lebs; }; static struct args args = { .vol_id = -1, .bytes = -1, .lebs = -1, }; static const char doc[] = PROGRAM_NAME " version " PROGRAM_VERSION " - a tool to resize UBI volumes."; static const char optionsstr[] = "-n, --vol_id=<volume id> volume ID to resize\n" "-N, --name=<volume name> volume name to resize\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" "-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>] [-s <bytes>] [-S <LEBs>] [-h] [--help]\n\n" "Example: " PROGRAM_NAME " /dev/ubi0 -n 1 -s 1MiB resize UBI volume 1 to 1 MiB on\n" " UBI device corresponding to /dev/ubi0\n" " " PROGRAM_NAME " /dev/ubi0 -N my_vol -s 1MiB - resize UBI volume named \"my_vol\" to 1 MiB\n" " on UBI device 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' }, { .name = "size", .has_arg = 1, .flag = NULL, .val = 's' }, { .name = "lebs", .has_arg = 1, .flag = NULL, .val = 'S' }, { 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; } if (args.bytes == -1 && args.lebs == -1) return errmsg("volume size was not specified (use -h for help)"); if (args.bytes != -1 && args.lebs != -1) return errmsg("size specified with more then one option"); return 0; } static int parse_opt(int argc, char * const argv[]) { while (1) { int key, error = 0; key = getopt_long(argc, argv, "s:S:n:N:h?V", long_options, NULL); if (key == -1) break; switch (key) { 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 '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 '?': 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 ':': 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; struct ubi_dev_info dev_info; struct ubi_vol_info vol_info; err = parse_opt(argc, argv); if (err) return -1; libubi = libubi_open(); if (!libubi) 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); } 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 (args.name) { 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; } else { err = ubi_get_vol_info1(libubi, dev_info.dev_num, args.vol_id, &vol_info); if (err) { sys_errmsg("cannot find UBI volume ID %d", args.vol_id); goto out_libubi; } } if (args.lebs != -1) args.bytes = vol_info.leb_size * args.lebs; err = ubi_rsvol(libubi, args.node, args.vol_id, args.bytes); if (err) { sys_errmsg("cannot UBI resize volume"); goto out_libubi; } libubi_close(libubi); return 0; out_libubi: libubi_close(libubi); return -1; }