From 606f38a2221648ca5c5fa292c9f71d2ddd59fa66 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Tue, 17 Mar 2009 10:14:54 +0200 Subject: ubi-utils: re-arrange directory layout Move new-utils to ubi-utils and old ones to ubi-utils/old-utils. Signed-off-by: Artem Bityutskiy --- ubi-utils/src/ubirename.c | 141 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 ubi-utils/src/ubirename.c (limited to 'ubi-utils/src/ubirename.c') diff --git a/ubi-utils/src/ubirename.c b/ubi-utils/src/ubirename.c new file mode 100644 index 0000000..8f33718 --- /dev/null +++ b/ubi-utils/src/ubirename.c @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2008 Logitech. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * 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., 51 + * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * An utility to get rename UBI volumes. + * + * Author: Richard Titmuss + */ + +#include +#include +#include +#include +#include + +#include +#include "common.h" + +#define PROGRAM_VERSION "1.0" +#define PROGRAM_NAME "ubirename" + +static const char *usage = +"Usage: " PROGRAM_NAME " [ |...]\n\n" +"Example: " PROGRAM_NAME "/dev/ubi0 A B C D - rename volume A to B, and C to D\n\n" +"This utility allows re-naming several volumes in one go atomically.\n" +"For example, if you have volumes A and B, then you may rename A into B\n" +"and B into A at one go, and the operation will be atomic. This allows\n" +"implementing atomic UBI volumes upgrades. E.g., if you have volume A\n" +"and want to upgrade it atomically, you create a temporary volume B,\n" +"put your new data to B, then rename A to B and B to A, and then you\n" +"may remove old volume B.\n" +"It is also allowed to re-name multiple volumes at a time, but 16 max.\n" +"renames at once, which means you may specify up to 32 volume names.\n" +"If you have volumes A and B, and re-name A to B, bud do not re-name\n" +"B to something else in the same request, old volume B will be removed\n" +"and A will be renamed into B.\n"; + +static int get_vol_id(libubi_t libubi, struct ubi_dev_info *dev_info, + char *name) +{ + int err, i; + struct ubi_vol_info vol_info; + + for (i=dev_info->lowest_vol_id; i<=dev_info->highest_vol_id; i++) { + err = ubi_get_vol_info1(libubi, dev_info->dev_num, i, &vol_info); + if (err == -1) { + if (errno == ENOENT) + continue; + return -1; + } + + if (strcmp(name, vol_info.name) == 0) + return vol_info.vol_id; + } + + return -1; +} + +int main(int argc, char * const argv[]) +{ + int i, err; + int count = 0; + libubi_t libubi; + struct ubi_dev_info dev_info; + struct ubi_rnvol_req rnvol; + const char *node; + + if (argc < 3 || (argc & 1) == 1) { + errmsg("too few arguments"); + fprintf(stderr, "%s\n", usage); + return -1; + } + + if (argc > UBI_MAX_RNVOL + 2) { + errmsg("too many volumes to re-name, max. is %d", + UBI_MAX_RNVOL); + return -1; + } + + node = argv[1]; + libubi = libubi_open(1); + if (!libubi) + return sys_errmsg("cannot open libubi"); + + err = ubi_node_type(libubi, node); + if (err == 2) { + errmsg("\"%s\" is an UBI volume node, not an UBI device node", + node); + goto out_libubi; + } else if (err < 0) { + errmsg("\"%s\" is not an UBI device node", node); + goto out_libubi; + } + + err = ubi_get_dev_info(libubi, node, &dev_info); + if (err == -1) { + sys_errmsg("cannot get information about UBI device \"%s\"", node); + goto out_libubi; + } + + for (i = 2; i < argc; i += 2) { + err = get_vol_id(libubi, &dev_info, argv[i]); + if (err == -1) { + errmsg("\"%s\" volume not found", argv[i]); + goto out_libubi; + } + + rnvol.ents[count].vol_id = err; + rnvol.ents[count].name_len = strlen(argv[i + 1]); + strcpy(rnvol.ents[count++].name, argv[i + 1]); + } + + rnvol.count = count; + + err = ubi_rnvols(libubi, node, &rnvol); + if (err == -1) { + sys_errmsg("cannot rename volumes"); + goto out_libubi; + } + + libubi_close(libubi); + return 0; + +out_libubi: + libubi_close(libubi); + return -1; +} -- cgit v1.2.3