From 3285a49dd871d54c1ec13076173ad617443baae1 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 25 Jun 2011 13:20:37 -0400 Subject: rewrite build system to avoid recursion The ubi-utils/src/ subdir is tossed as it just complicates things for no real gain. The dictionary.h header is relocated to the ubi-utils/include/ since other headers in there need it. The top level clean is replaced with a `find -delete` on objects, so it might prune more than necessary, but many projects now do this sort of thing and no one complained there. A "mkdep" helper generates the actual rule, and the variables are used with "foreach" to expand these automatically. The tests subdir is updated only to reflect the ubi-utils source move. Otherwise, it is left untouched as making that non-recursive isn't really worth the effort. While we're gutting things, also through in kbuild style output while building to make things more legible. Signed-off-by: Mike Frysinger Signed-off-by: Artem Bityutskiy --- ubi-utils/ubidetach.c | 208 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 ubi-utils/ubidetach.c (limited to 'ubi-utils/ubidetach.c') diff --git a/ubi-utils/ubidetach.c b/ubi-utils/ubidetach.c new file mode 100644 index 0000000..668f1bd --- /dev/null +++ b/ubi-utils/ubidetach.c @@ -0,0 +1,208 @@ +/* + * Copyright (C) 2007 Nokia Corporation. + * + * 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 delete UBI devices (detach MTD devices from UBI). + * + * Author: Artem Bityutskiy + */ + +#define PROGRAM_VERSION "1.1" +#define PROGRAM_NAME "ubidetach" + +#include +#include +#include +#include +#include + +#include +#include "common.h" + +#define DEFAULT_CTRL_DEV "/dev/ubi_ctrl" + +/* The variables below are set by command line arguments */ +struct args { + int devn; + int mtdn; + const char *node; + const char *dev; +}; + +static struct args args = { + .devn = UBI_DEV_NUM_AUTO, + .mtdn = -1, + .node = NULL, + .dev = NULL, +}; + +static const char doc[] = PROGRAM_NAME " version " PROGRAM_VERSION +" - tool to remove UBI devices (detach MTD devices from UBI)"; + +static const char optionsstr[] = +"-d, --devn= UBI device number to delete\n" +"-p, --dev-path= or alternatively, MTD device node path to detach\n" +"-m, --mtdn= or alternatively, MTD device number to detach\n" +"-h, --help print help message\n" +"-V, --version print program version"; + +static const char usage[] = +"Usage: " PROGRAM_NAME " []\n" +"\t[-d ] [-m ] [-p ]\n" +"\t[--devn=] [--mtdn=]\n" +"\t[--dev-path=]\n" +"UBI control device defaults to " DEFAULT_CTRL_DEV " if not supplied.\n" +"Example 1: " PROGRAM_NAME " -p /dev/mtd0 - detach MTD device /dev/mtd0\n" +"Example 2: " PROGRAM_NAME " -d 2 - delete UBI device 2 (ubi2)\n" +"Example 3: " PROGRAM_NAME " -m 0 - detach MTD device 0 (mtd0)"; + +static const struct option long_options[] = { + { .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' }, + { .name = "dev-path", .has_arg = 1, .flag = NULL, .val = 'p' }, + { .name = "mtdn", .has_arg = 1, .flag = NULL, .val = 'm' }, + { .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' }, + { .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' }, + { NULL, 0, NULL, 0}, +}; + +static int parse_opt(int argc, char * const argv[]) +{ + while (1) { + int key, error = 0; + + key = getopt_long(argc, argv, "p:m:d:hV", long_options, NULL); + if (key == -1) + break; + + switch (key) { + case 'p': + args.dev = optarg; + break; + case 'd': + args.devn = simple_strtoul(optarg, &error); + if (error || args.devn < 0) + return errmsg("bad UBI device number: \"%s\"", optarg); + + break; + + case 'm': + args.mtdn = simple_strtoul(optarg, &error); + if (error || args.mtdn < 0) + return errmsg("bad MTD device number: \"%s\"", optarg); + + break; + + case 'h': + 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 ':': + return errmsg("parameter is missing"); + + default: + fprintf(stderr, "Use -h for help\n"); + return -1; + } + } + + if (optind == argc) + args.node = DEFAULT_CTRL_DEV; + else if (optind != argc - 1) + return errmsg("more then one UBI control device specified (use -h for help)"); + else + args.node = argv[optind]; + + if (args.mtdn == -1 && args.devn == -1 && args.dev == NULL) + return errmsg("neither MTD nor UBI devices were specified (use -h for help)"); + + if (args.devn != -1) { + if (args.mtdn != -1 || args.dev != NULL) + return errmsg("specify either MTD or UBI device (use -h for help)"); + + } else if (args.mtdn != -1 && args.dev != NULL) + return errmsg("specify either MTD number or device node (use -h for help)"); + + return 0; +} + +int main(int argc, char * const argv[]) +{ + int err; + libubi_t libubi; + struct ubi_info ubi_info; + + 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"); + } + + /* + * Make sure the kernel is fresh enough and this feature is supported. + */ + err = ubi_get_info(libubi, &ubi_info); + if (err) { + sys_errmsg("cannot get UBI information"); + goto out_libubi; + } + + if (ubi_info.ctrl_major == -1) { + errmsg("MTD detach/detach feature is not supported by your kernel"); + goto out_libubi; + } + + if (args.devn != -1) { + err = ubi_remove_dev(libubi, args.node, args.devn); + if (err) { + sys_errmsg("cannot remove ubi%d", args.devn); + goto out_libubi; + } + } else { + if (args.dev != NULL) { + err = ubi_detach(libubi, args.node, args.dev); + if (err) { + sys_errmsg("cannot detach \"%s\"", args.dev); + goto out_libubi; + } + } else { + err = ubi_detach_mtd(libubi, args.node, args.mtdn); + if (err) { + sys_errmsg("cannot detach mtd%d", args.mtdn); + goto out_libubi; + } + } + } + + libubi_close(libubi); + return 0; + +out_libubi: + libubi_close(libubi); + return -1; +} + -- cgit v1.2.3