diff options
Diffstat (limited to 'sbin/geom/class/cache')
| -rw-r--r-- | sbin/geom/class/cache/Makefile | 8 | ||||
| -rw-r--r-- | sbin/geom/class/cache/geom_cache.c | 241 |
2 files changed, 249 insertions, 0 deletions
diff --git a/sbin/geom/class/cache/Makefile b/sbin/geom/class/cache/Makefile new file mode 100644 index 000000000000..6ca37e6c05e8 --- /dev/null +++ b/sbin/geom/class/cache/Makefile @@ -0,0 +1,8 @@ +# $FreeBSD$ + +.PATH: ${.CURDIR}/../../misc + +CLASS= cache +NO_MAN= # notyet + +.include <bsd.lib.mk> diff --git a/sbin/geom/class/cache/geom_cache.c b/sbin/geom/class/cache/geom_cache.c new file mode 100644 index 000000000000..19a0bf5a03fd --- /dev/null +++ b/sbin/geom/class/cache/geom_cache.c @@ -0,0 +1,241 @@ +/*- + * Copyright (c) 2006 Ruslan Ermilov <ru@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <stdio.h> +#include <stdint.h> +#include <string.h> +#include <strings.h> +#include <libgeom.h> +#include <geom/cache/g_cache.h> + +#include "core/geom.h" +#include "misc/subr.h" + + +uint32_t lib_version = G_LIB_VERSION; +uint32_t version = G_CACHE_VERSION; + +static intmax_t blocksize_label = 65536; +static intmax_t size_label = 100; +static intmax_t blocksize_configure = 0; +static intmax_t size_configure = 0; + +static void cache_main(struct gctl_req *req, unsigned flags); +static void cache_clear(struct gctl_req *req); +static void cache_dump(struct gctl_req *req); +static void cache_label(struct gctl_req *req); + +struct g_command class_commands[] = { + { "clear", G_FLAG_VERBOSE, cache_main, G_NULL_OPTS, + "[-v] prov ..." + }, + { "configure", G_FLAG_VERBOSE, NULL, + { + { 'b', "blocksize", &blocksize_configure, G_TYPE_NUMBER }, + { 's', "size", &size_configure, G_TYPE_NUMBER }, + G_OPT_SENTINEL + }, + "[-v] [-b blocksize] [-s size] name" + }, + { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, + { + { 'b', "blocksize", &blocksize_label, G_TYPE_NUMBER }, + { 's', "size", &size_label, G_TYPE_NUMBER }, + G_OPT_SENTINEL + }, + "[-v] [-b blocksize] [-s size] name prov" + }, + { "destroy", G_FLAG_VERBOSE, NULL, + { + { 'f', "force", NULL, G_TYPE_NONE }, + G_OPT_SENTINEL + }, + "[-fv] name ..." + }, + { "dump", 0, cache_main, G_NULL_OPTS, + "prov ..." + }, + { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, cache_main, + { + { 'b', "blocksize", &blocksize_label, G_TYPE_NUMBER }, + { 's', "size", &size_label, G_TYPE_NUMBER }, + G_OPT_SENTINEL + }, + "[-v] [-b blocksize] [-s size] name prov" + }, + { "reset", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, + "[-v] name ..." + }, + { "stop", G_FLAG_VERBOSE, NULL, + { + { 'f', "force", NULL, G_TYPE_NONE }, + G_OPT_SENTINEL + }, + "[-fv] name ..." + }, + G_CMD_SENTINEL +}; + +static int verbose = 0; + +static void +cache_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) + cache_label(req); + else if (strcmp(name, "clear") == 0) + cache_clear(req); + else if (strcmp(name, "dump") == 0) + cache_dump(req); + else + gctl_error(req, "Unknown command: %s.", name); +} + +static void +cache_label(struct gctl_req *req) +{ + struct g_cache_metadata md; + u_char sector[512]; + const char *name; + int error, nargs; + intmax_t val; + + nargs = gctl_get_int(req, "nargs"); + if (nargs != 2) { + gctl_error(req, "Invalid number of arguments."); + return; + } + + strlcpy(md.md_magic, G_CACHE_MAGIC, sizeof(md.md_magic)); + md.md_version = G_CACHE_VERSION; + name = gctl_get_ascii(req, "arg0"); + strlcpy(md.md_name, name, sizeof(md.md_name)); + val = gctl_get_intmax(req, "blocksize"); + md.md_bsize = val; + val = gctl_get_intmax(req, "size"); + md.md_size = val; + + name = gctl_get_ascii(req, "arg1"); + md.md_provsize = g_get_mediasize(name); + if (md.md_provsize == 0) { + fprintf(stderr, "Can't get mediasize of %s: %s.\n", + name, strerror(errno)); + gctl_error(req, "Not fully done."); + return; + } + cache_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 fully done."); + return; + } + if (verbose) + printf("Metadata value stored on %s.\n", name); +} + +static void +cache_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_CACHE_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 +cache_metadata_dump(const struct g_cache_metadata *md) +{ + + printf(" Magic string: %s\n", md->md_magic); + printf(" Metadata version: %u\n", (u_int)md->md_version); + printf(" Device name: %s\n", md->md_name); + printf(" Block size: %u\n", (u_int)md->md_bsize); + printf(" Cache size: %u\n", (u_int)md->md_size); + printf(" Provider size: %ju\n", (uintmax_t)md->md_provsize); +} + +static void +cache_dump(struct gctl_req *req) +{ + struct g_cache_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_CACHE_MAGIC); + if (error != 0) { + fprintf(stderr, "Can't read metadata from %s: %s.\n", + name, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + cache_metadata_decode((u_char *)&tmpmd, &md); + printf("Metadata on %s:\n", name); + cache_metadata_dump(&md); + printf("\n"); + } +} |