e68909854c
shared-last-sector problem. After this change, even if there is more than one provider with the same last sector, the proper one will be chosen based on its size. It still doesn't fix the 'c' partition problem (when da0s1 can be confused with da0s1c) and situation when 'a' partition starts at offset 0 (then da0s1a can be confused with da0s1 and da0s1c). One can use '-h' option there, when creating device or avoid sharing last sector. Actually, when providers share the same last sector and their size is equal, they provide exactly the same data, so the name (da0s1, da0s1a, da0s1c) isn't important at all. - Provide backward compatibility. - Update copyright's year. MFC after: 1 week
252 lines
6.6 KiB
C
252 lines
6.6 KiB
C
/*-
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* Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <assert.h>
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#include <libgeom.h>
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#include <geom/label/g_label.h>
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#include "core/geom.h"
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#include "misc/subr.h"
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uint32_t lib_version = G_LIB_VERSION;
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uint32_t version = G_LABEL_VERSION;
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static void label_main(struct gctl_req *req, unsigned flags);
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static void label_clear(struct gctl_req *req);
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static void label_dump(struct gctl_req *req);
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static void label_label(struct gctl_req *req);
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struct g_command class_commands[] = {
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{ "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS },
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{ "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS },
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{ "destroy", G_FLAG_VERBOSE, NULL,
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{
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{ 'f', "force", NULL, G_TYPE_NONE },
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G_OPT_SENTINEL
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}
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},
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{ "dump", 0, label_main, G_NULL_OPTS },
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{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS },
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{ "stop", G_FLAG_VERBOSE, NULL,
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{
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{ 'f', "force", NULL, G_TYPE_NONE },
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G_OPT_SENTINEL
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}
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},
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G_CMD_SENTINEL
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};
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static int verbose = 0;
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void usage(const char *name);
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void
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usage(const char *name)
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{
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fprintf(stderr, "usage: %s create [-v] name dev\n", name);
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fprintf(stderr, " %s destroy [-fv] name ...\n", name);
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fprintf(stderr, " %s label [-v] name dev\n", name);
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fprintf(stderr, " %s stop [-fv] name ...\n", name);
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fprintf(stderr, " %s clear [-v] dev ...\n", name);
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fprintf(stderr, " %s dump dev ...\n", name);
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}
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static void
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label_main(struct gctl_req *req, unsigned flags)
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{
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const char *name;
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if ((flags & G_FLAG_VERBOSE) != 0)
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verbose = 1;
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name = gctl_get_asciiparam(req, "verb");
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if (name == NULL) {
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gctl_error(req, "No '%s' argument.", "verb");
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return;
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}
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if (strcmp(name, "label") == 0)
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label_label(req);
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else if (strcmp(name, "clear") == 0)
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label_clear(req);
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else if (strcmp(name, "dump") == 0)
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label_dump(req);
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else
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gctl_error(req, "Unknown command: %s.", name);
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}
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static void
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label_label(struct gctl_req *req)
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{
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struct g_label_metadata md;
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const char *name, *label;
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u_char sector[512];
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int *nargs, error;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs != 2) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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/*
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* Clear last sector first to spoil all components if device exists.
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*/
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name = gctl_get_asciiparam(req, "arg1");
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if (name == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 1);
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return;
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}
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error = g_metadata_clear(name, NULL);
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if (error != 0) {
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gctl_error(req, "Can't store metadata on %s: %s.", name,
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strerror(error));
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return;
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}
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strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic));
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md.md_version = G_LABEL_VERSION;
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label = gctl_get_asciiparam(req, "arg0");
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if (label == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 0);
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return;
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}
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strlcpy(md.md_label, label, sizeof(md.md_label));
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md.md_provsize = g_get_mediasize(name);
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if (md.md_provsize == 0) {
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gctl_error(req, "Can't get mediasize of %s: %s.", name,
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strerror(errno));
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return;
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}
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/*
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* Ok, store metadata.
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*/
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label_metadata_encode(&md, sector);
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error = g_metadata_store(name, sector, sizeof(sector));
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if (error != 0) {
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fprintf(stderr, "Can't store metadata on %s: %s.\n", name,
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strerror(error));
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gctl_error(req, "Not done.");
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}
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if (verbose)
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printf("Metadata value stored on %s.\n", name);
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}
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static void
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label_clear(struct gctl_req *req)
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{
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const char *name;
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char param[16];
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unsigned i;
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int *nargs, error;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 1) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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for (i = 0; i < (unsigned)*nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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name = gctl_get_asciiparam(req, param);
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error = g_metadata_clear(name, G_LABEL_MAGIC);
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if (error != 0) {
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fprintf(stderr, "Can't clear metadata on %s: %s.\n",
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name, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (verbose)
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printf("Metadata cleared on %s.\n", name);
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}
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}
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static void
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label_metadata_dump(const struct g_label_metadata *md)
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{
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printf(" Magic string: %s\n", md->md_magic);
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printf("Metadata version: %u\n", (u_int)md->md_version);
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printf(" Label: %s\n", md->md_label);
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}
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static void
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label_dump(struct gctl_req *req)
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{
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struct g_label_metadata md, tmpmd;
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const char *name;
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char param[16];
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int *nargs, error, i;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 1) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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for (i = 0; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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name = gctl_get_asciiparam(req, param);
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error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
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G_LABEL_MAGIC);
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if (error != 0) {
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fprintf(stderr, "Can't read metadata from %s: %s.\n",
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name, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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label_metadata_decode((u_char *)&tmpmd, &md);
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printf("Metadata on %s:\n", name);
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label_metadata_dump(&md);
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printf("\n");
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}
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}
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