3cf55d3ab9
In order to support gpart(8), geom(8) needs to support a named argument. Also, optional string parameters are a requirement. Both have been added to the infrastructure. The former required all existing classes to be adjusted.
242 lines
6.5 KiB
C
242 lines
6.5 KiB
C
/*-
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* Copyright (c) 2006 Ruslan Ermilov <ru@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 AUTHOR 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 AUTHOR 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 <errno.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <strings.h>
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#include <libgeom.h>
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#include <geom/cache/g_cache.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_CACHE_VERSION;
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static intmax_t blocksize_label = 65536;
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static intmax_t size_label = 100;
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static intmax_t blocksize_configure = 0;
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static intmax_t size_configure = 0;
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static void cache_main(struct gctl_req *req, unsigned flags);
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static void cache_clear(struct gctl_req *req);
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static void cache_dump(struct gctl_req *req);
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static void cache_label(struct gctl_req *req);
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struct g_command class_commands[] = {
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{ "clear", G_FLAG_VERBOSE, cache_main, G_NULL_OPTS, NULL,
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"[-v] prov ..."
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},
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{ "configure", G_FLAG_VERBOSE, NULL,
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{
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{ 'b', "blocksize", &blocksize_configure, G_TYPE_NUMBER },
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{ 's', "size", &size_configure, G_TYPE_NUMBER },
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G_OPT_SENTINEL
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},
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NULL, "[-v] [-b blocksize] [-s size] name"
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},
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{ "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL,
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{
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{ 'b', "blocksize", &blocksize_label, G_TYPE_NUMBER },
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{ 's', "size", &size_label, G_TYPE_NUMBER },
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G_OPT_SENTINEL
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},
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NULL, "[-v] [-b blocksize] [-s size] name prov"
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},
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{ "destroy", G_FLAG_VERBOSE, NULL,
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{
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{ 'f', "force", NULL, G_TYPE_BOOL },
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G_OPT_SENTINEL
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},
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NULL, "[-fv] name ..."
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},
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{ "dump", 0, cache_main, G_NULL_OPTS, NULL,
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"prov ..."
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},
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{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, cache_main,
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{
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{ 'b', "blocksize", &blocksize_label, G_TYPE_NUMBER },
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{ 's', "size", &size_label, G_TYPE_NUMBER },
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G_OPT_SENTINEL
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},
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NULL, "[-v] [-b blocksize] [-s size] name prov"
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},
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{ "reset", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, NULL,
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"[-v] name ..."
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},
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{ "stop", G_FLAG_VERBOSE, NULL,
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{
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{ 'f', "force", NULL, G_TYPE_BOOL },
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G_OPT_SENTINEL
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},
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NULL, "[-fv] name ..."
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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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static void
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cache_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_ascii(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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cache_label(req);
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else if (strcmp(name, "clear") == 0)
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cache_clear(req);
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else if (strcmp(name, "dump") == 0)
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cache_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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cache_label(struct gctl_req *req)
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{
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struct g_cache_metadata md;
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u_char sector[512];
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const char *name;
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int error, nargs;
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intmax_t val;
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nargs = gctl_get_int(req, "nargs");
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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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strlcpy(md.md_magic, G_CACHE_MAGIC, sizeof(md.md_magic));
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md.md_version = G_CACHE_VERSION;
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name = gctl_get_ascii(req, "arg0");
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strlcpy(md.md_name, name, sizeof(md.md_name));
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val = gctl_get_intmax(req, "blocksize");
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md.md_bsize = val;
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val = gctl_get_intmax(req, "size");
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md.md_size = val;
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name = gctl_get_ascii(req, "arg1");
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md.md_provsize = g_get_mediasize(name);
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if (md.md_provsize == 0) {
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fprintf(stderr, "Can't get mediasize of %s: %s.\n",
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name, strerror(errno));
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gctl_error(req, "Not fully done.");
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return;
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}
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cache_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",
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name, strerror(error));
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gctl_error(req, "Not fully done.");
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return;
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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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cache_clear(struct gctl_req *req)
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{
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const char *name;
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int error, i, nargs;
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nargs = gctl_get_int(req, "nargs");
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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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name = gctl_get_ascii(req, "arg%d", i);
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error = g_metadata_clear(name, G_CACHE_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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cache_metadata_dump(const struct g_cache_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(" Device name: %s\n", md->md_name);
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printf(" Block size: %u\n", (u_int)md->md_bsize);
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printf(" Cache size: %u\n", (u_int)md->md_size);
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printf(" Provider size: %ju\n", (uintmax_t)md->md_provsize);
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}
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static void
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cache_dump(struct gctl_req *req)
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{
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struct g_cache_metadata md, tmpmd;
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const char *name;
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int error, i, nargs;
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nargs = gctl_get_int(req, "nargs");
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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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name = gctl_get_ascii(req, "arg%d", i);
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error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
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G_CACHE_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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cache_metadata_decode((u_char *)&tmpmd, &md);
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printf("Metadata on %s:\n", name);
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cache_metadata_dump(&md);
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printf("\n");
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}
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}
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