diff options
Diffstat (limited to 'lib/geom/label/geom_label.c')
| -rw-r--r-- | lib/geom/label/geom_label.c | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/lib/geom/label/geom_label.c b/lib/geom/label/geom_label.c new file mode 100644 index 000000000000..1daf3df1c5c2 --- /dev/null +++ b/lib/geom/label/geom_label.c @@ -0,0 +1,257 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <assert.h> +#include <libgeom.h> +#include <geom/label/g_label.h> + +#include "core/geom.h" +#include "misc/subr.h" + +#ifdef STATIC_GEOM_CLASSES +#define PUBSYM(x) glabel_##x +#else +#define PUBSYM(x) x +#endif + +uint32_t PUBSYM(lib_version) = G_LIB_VERSION; +uint32_t PUBSYM(version) = G_LABEL_VERSION; + +static void label_main(struct gctl_req *req, unsigned flags); +static void label_clear(struct gctl_req *req); +static void label_dump(struct gctl_req *req); +static void label_label(struct gctl_req *req); +static void label_refresh(struct gctl_req *req); + +struct g_command PUBSYM(class_commands)[] = { + { "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS, + "[-v] dev ..." + }, + { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS, + "[-v] name dev" + }, + { "destroy", G_FLAG_VERBOSE, NULL, + { + { 'f', "force", NULL, G_TYPE_BOOL }, + G_OPT_SENTINEL + }, + "[-fv] name ..." + }, + { "dump", 0, label_main, G_NULL_OPTS, + "dev ..." + }, + { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS, + "[-v] name dev" + }, + { "refresh", 0, label_main, G_NULL_OPTS, + "dev ..." + }, + { "stop", G_FLAG_VERBOSE, NULL, + { + { 'f', "force", NULL, G_TYPE_BOOL }, + G_OPT_SENTINEL + }, + "[-fv] name ..." + }, + G_CMD_SENTINEL +}; + +static int verbose = 0; + +static void +label_main(struct gctl_req *req, unsigned flags) +{ + const char *name; + + if ((flags & G_FLAG_VERBOSE) != 0) + verbose = 1; + + name = gctl_get_ascii(req, "verb"); + if (name == NULL) { + gctl_error(req, "No '%s' argument.", "verb"); + return; + } + if (strcmp(name, "label") == 0) + label_label(req); + else if (strcmp(name, "clear") == 0) + label_clear(req); + else if (strcmp(name, "dump") == 0) + label_dump(req); + else if (strcmp(name, "refresh") == 0) + label_refresh(req); + else + gctl_error(req, "Unknown command: %s.", name); +} + +static void +label_label(struct gctl_req *req) +{ + struct g_label_metadata md; + const char *name, *label; + u_char sector[512]; + int error, nargs; + + bzero(sector, sizeof(sector)); + nargs = gctl_get_int(req, "nargs"); + if (nargs != 2) { + gctl_error(req, "Invalid number of arguments."); + return; + } + + /* + * Clear last sector first to spoil all components if device exists. + */ + name = gctl_get_ascii(req, "arg1"); + error = g_metadata_clear(name, NULL); + if (error != 0) { + gctl_error(req, "Can't store metadata on %s: %s.", name, + strerror(error)); + return; + } + + strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic)); + md.md_version = G_LABEL_VERSION; + label = gctl_get_ascii(req, "arg0"); + bzero(md.md_label, sizeof(md.md_label)); + strlcpy(md.md_label, label, sizeof(md.md_label)); + md.md_provsize = g_get_mediasize(name); + if (md.md_provsize == 0) { + gctl_error(req, "Can't get mediasize of %s: %s.", name, + strerror(errno)); + return; + } + + /* + * Ok, store metadata. + */ + label_metadata_encode(&md, sector); + error = g_metadata_store(name, sector, sizeof(sector)); + if (error != 0) { + fprintf(stderr, "Can't store metadata on %s: %s.\n", name, + strerror(error)); + gctl_error(req, "Not done."); + } + if (verbose) + printf("Metadata value stored on %s.\n", name); +} + +static void +label_clear(struct gctl_req *req) +{ + const char *name; + int error, i, nargs; + + nargs = gctl_get_int(req, "nargs"); + if (nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < nargs; i++) { + name = gctl_get_ascii(req, "arg%d", i); + error = g_metadata_clear(name, G_LABEL_MAGIC); + if (error != 0) { + fprintf(stderr, "Can't clear metadata on %s: %s.\n", + name, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + if (verbose) + printf("Metadata cleared on %s.\n", name); + } +} + +static void +label_metadata_dump(const struct g_label_metadata *md) +{ + + printf(" Magic string: %s\n", md->md_magic); + printf("Metadata version: %u\n", (u_int)md->md_version); + printf(" Label: %s\n", md->md_label); +} + +static void +label_dump(struct gctl_req *req) +{ + struct g_label_metadata md, tmpmd; + const char *name; + int error, i, nargs; + + nargs = gctl_get_int(req, "nargs"); + if (nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < nargs; i++) { + name = gctl_get_ascii(req, "arg%d", i); + error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), + G_LABEL_MAGIC); + if (error != 0) { + fprintf(stderr, "Can't read metadata from %s: %s.\n", + name, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + label_metadata_decode((u_char *)&tmpmd, &md); + printf("Metadata on %s:\n", name); + label_metadata_dump(&md); + printf("\n"); + } +} + +static void +label_refresh(struct gctl_req *req) +{ + const char *name; + int i, nargs, fd; + + nargs = gctl_get_int(req, "nargs"); + if (nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < nargs; i++) { + name = gctl_get_ascii(req, "arg%d", i); + fd = g_open(name, 1); + if (fd == -1) { + printf("Can't refresh metadata from %s: %s.\n", + name, strerror(errno)); + } else { + printf("Metadata from %s refreshed.\n", name); + (void)g_close(fd); + } + } +} |