[PATCH/mtd-utils] add a "ubirsvol" tool to resize UBI volume.
Arnaud Mouiche
arnaud.mouiche at thomson.net
Wed Sep 30 10:39:30 EDT 2009
This is nearly a copy/paste from ubirmvol
Signed-off-by: Arnaud Mouiche <arnaud.mouiche at thomson.net>
---
ubi-utils/Makefile | 2 +-
ubi-utils/src/ubirsvol.c | 246
++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 247 insertions(+), 1 deletions(-)
create mode 100644 ubi-utils/src/ubirsvol.c
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..afaa03f
--- /dev/null
+++ b/ubi-utils/src/ubirsvol.c
@@ -0,0 +1,246 @@
+/*
+ * 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 at infradead.org>
+ * Frank Haverkamp <haver at 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;
+}
--
1.5.6.5
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