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author | phk <phk@FreeBSD.org> | 2003-01-31 16:27:07 +0000 |
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committer | phk <phk@FreeBSD.org> | 2003-01-31 16:27:07 +0000 |
commit | 9d1b9f3c00eec7affbd4cfbbdecad9d0d4c68616 (patch) | |
tree | 3af1607d883382486c0b817100e3563f98603a5b /sys/geom/geom_apple.c | |
parent | e7ce94ea3cd571d0c7500004591f0fa276aa4106 (diff) | |
download | FreeBSD-src-9d1b9f3c00eec7affbd4cfbbdecad9d0d4c68616.zip FreeBSD-src-9d1b9f3c00eec7affbd4cfbbdecad9d0d4c68616.tar.gz |
Add a rudimentary class for slicing Apple partitioned disks.
More work is needed on this, stakeholders please contact me.
Not quite asked for by: rwatson
Diffstat (limited to 'sys/geom/geom_apple.c')
-rw-r--r-- | sys/geom/geom_apple.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/sys/geom/geom_apple.c b/sys/geom/geom_apple.c new file mode 100644 index 0000000..07d2bd7 --- /dev/null +++ b/sys/geom/geom_apple.c @@ -0,0 +1,198 @@ +/*- + * Copyright (c) 2002 Poul-Henning Kamp + * 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. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * 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. + * + * $FreeBSD$ + */ + + +#include <sys/param.h> +#ifndef _KERNEL +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <signal.h> +#include <err.h> +#else +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/conf.h> +#include <sys/bio.h> +#include <sys/malloc.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#endif +#include <geom/geom.h> +#include <geom/geom_slice.h> +#include <machine/endian.h> + +#define APPLE_CLASS_NAME "APPLE" + +struct g_apple_softc { + int nheads; + int nsects; + int nalt; +}; + +static int +g_apple_start(struct bio *bp) +{ + struct g_geom *gp; + struct g_apple_softc *ms; + struct g_slicer *gsp; + + gp = bp->bio_to->geom; + gsp = gp->softc; + ms = gsp->softc; + return (0); +} + +static void +g_apple_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp) +{ + struct g_slicer *gsp; + struct g_apple_softc *ms; + + gsp = gp->softc; + ms = gsp->softc; + g_slice_dumpconf(sb, indent, gp, cp, pp); + if (indent == NULL) { + sbuf_printf(sb, " sc %u hd %u alt %u", + ms->nsects, ms->nheads, ms->nalt); + } +} + +static struct g_geom * +g_apple_taste(struct g_class *mp, struct g_provider *pp, int flags) +{ + struct g_geom *gp; + struct g_consumer *cp; + int error, i; + u_char *buf; + struct g_apple_softc *ms; + u_int sectorsize, pssize; + off_t mediasize, o; + struct g_slicer *gsp; + + g_trace(G_T_TOPOLOGY, "g_apple_taste(%s,%s)", mp->name, pp->name); + g_topology_assert(); + if (flags == G_TF_NORMAL && + !strcmp(pp->geom->class->name, APPLE_CLASS_NAME)) + return (NULL); + gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_apple_start); + if (gp == NULL) + return (NULL); + gsp = gp->softc; + g_topology_unlock(); + gp->dumpconf = g_apple_dumpconf; + while (1) { /* a trick to allow us to use break */ + if (gp->rank != 2 && flags == G_TF_NORMAL) + break; + sectorsize = cp->provider->sectorsize; + if (sectorsize < 512) + break; + gsp->frontstuff = 16 * sectorsize; + mediasize = cp->provider->mediasize; + buf = g_read_data(cp, 0, sectorsize, &error); + if (buf == NULL || error != 0) + break; + + + /* The second last short is a magic number */ + if (g_dec_be2(buf + 0) != 0x4552) + break; + g_hexdump(buf, 26); + pssize = g_dec_be2(buf + 2); + printf("sbSig: 0x%04x\n", g_dec_be2(buf + 0)); + printf("sbBlksize: %u\n", g_dec_be2(buf + 2)); + printf("sbBlkCount: %u\n", g_dec_be4(buf + 4)); + printf("sbDevType: %u\n", g_dec_be2(buf + 8)); + printf("sbDevId: %u\n", g_dec_be2(buf + 10)); + printf("sbData: %u\n", g_dec_be4(buf + 12)); + printf("sbDrvCount: %u\n", g_dec_be2(buf + 16)); + printf("ddBlock: %u\n", g_dec_be4(buf + 18)); + printf("ddSize: %u\n", g_dec_be2(buf + 22)); + printf("ddType: %u\n", g_dec_be2(buf + 24)); + + i = 0; + for (o = sectorsize; ; o += sectorsize) { + buf = g_read_data(cp, o, sectorsize, &error); + if (buf == NULL || error != 0) + break; + if (g_dec_be2(buf + 0) != 0x504d) + break; + g_hexdump(buf, 136); + printf("pmSig: 0x%04x\n", g_dec_be2(buf + 0)); + printf("pmSigPad: 0x%04x\n", g_dec_be2(buf + 2)); + printf("pmMapBlkCnt: %u\n", g_dec_be4(buf + 4)); + printf("pmPyPartStart: %u\n", g_dec_be4(buf + 8)); + printf("pmPartBlkCnt: %u\n", g_dec_be4(buf + 12)); + printf("pmPartName:\n"); + g_hexdump(buf + 16, 32); + printf("pmPartType:\n"); + g_hexdump(buf + 48, 32); + printf("pmLgDataStart: %u\n", g_dec_be4(buf + 80)); + printf("pmDataCnt: %u\n", g_dec_be4(buf + 84)); + printf("pmPartStatus: 0x%x\n", g_dec_be4(buf + 88)); + printf("pmLgBootStart: %u\n", g_dec_be4(buf + 92)); + printf("pmBootSize: %u\n", g_dec_be4(buf + 96)); + printf("pmBootAddr: %u\n", g_dec_be4(buf + 100)); + printf("pmBootAddr2: %u\n", g_dec_be4(buf + 104)); + printf("pmBootEntry: %u\n", g_dec_be4(buf + 108)); + printf("pmBootEntry2: %u\n", g_dec_be4(buf + 112)); + printf("pmBootCksum: %u\n", g_dec_be4(buf + 116)); + printf("pmProcessor:\n"); + g_hexdump(buf + 120, 16); + g_topology_lock(); + g_slice_config(gp, i, G_SLICE_CONFIG_SET, + (off_t)g_dec_be4(buf + 8) * pssize, + (off_t)g_dec_be4(buf + 12) * pssize, + sectorsize, + "%sp%d", pp->name, i); + i++; + g_topology_unlock(); + } + break; + + } + g_topology_lock(); + g_access_rel(cp, -1, 0, 0); + if (LIST_EMPTY(&gp->provider)) { + g_std_spoiled(cp); + return (NULL); + } + return (gp); +} + +static struct g_class g_apple_class = { + APPLE_CLASS_NAME, + g_apple_taste, + NULL, + G_CLASS_INITIALIZER +}; + +DECLARE_GEOM_CLASS(g_apple_class, g_apple); |