diff options
Diffstat (limited to 'ubi-utils')
| -rw-r--r-- | ubi-utils/Makefile | 2 | ||||
| -rw-r--r-- | ubi-utils/src/ubirsvol.c | 245 |
2 files changed, 246 insertions, 1 deletions
diff --git a/ubi-utils/Makefile b/ubi-utils/Makefile index b5388ec..e736a09 100644 --- a/ubi-utils/Makefile +++ b/ubi-utils/Makefile @@ -11,7 +11,7 @@ CPPFLAGS += -Iinclude -Isrc -I$(KERNELHDR) LIBS = libubi libmtd libubigen libiniparser libscan TARGETS = ubiupdatevol ubimkvol ubirmvol ubicrc32 ubinfo ubiattach \ - ubidetach ubinize ubiformat ubirename mtdinfo + ubidetach ubinize ubiformat ubirename mtdinfo ubirsvol VPATH = src diff --git a/ubi-utils/src/ubirsvol.c b/ubi-utils/src/ubirsvol.c new file mode 100644 index 0000000..a32a956 --- /dev/null +++ b/ubi-utils/src/ubirsvol.c @@ -0,0 +1,245 @@ +/* + * 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> + */ + +#include <stdio.h> +#include <stdint.h> +#include <getopt.h> +#include <stdlib.h> +#include <string.h> + +#include <libubi.h> +#include "common.h" + +#define PROGRAM_VERSION "1.1" +#define PROGRAM_NAME "ubirsvol" + +/* 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; + char *endp; + + 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 = strtoull(optarg, &endp, 0); + if (endp == optarg || args.lebs <= 0 || *endp != '\0') + return errmsg("bad LEB count: \"%s\"", optarg); + break; + + 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 '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; +} |