diff options
Diffstat (limited to 'sys/geom')
| -rw-r--r-- | sys/geom/geom_sunlabel.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/sys/geom/geom_sunlabel.c b/sys/geom/geom_sunlabel.c new file mode 100644 index 0000000..9cba1b7 --- /dev/null +++ b/sys/geom/geom_sunlabel.c @@ -0,0 +1,209 @@ +/*- + * Copyright (c) 2002 Poul-Henning Kamp + * Copyright (c) 2002 Networks Associates Technology, Inc. + * All rights reserved. + * + * This software was developed for the FreeBSD Project by Poul-Henning Kamp + * and NAI Labs, the Security Research Division of Network Associates, Inc. + * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the + * DARPA CHATS research program. + * + * 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 <sys/errno.h> +#include <geom/geom.h> +#include <geom/geom_slice.h> +#include <machine/endian.h> + +#define BSD_METHOD_NAME "SUNLABEL-method" + +static u_int +g_u16be(u_char *p) +{ + return ((p[0] << 8) | p[1]); +} + +static u_int +g_u32be(u_char *p) +{ + return ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]); +} + + +struct g_sunlabel_softc { + int foo; +}; + +static int +g_sunlabel_start(struct bio *bp) +{ + struct g_geom *gp; + struct g_sunlabel_softc *ms; + struct g_slicer *gsp; + + gp = bp->bio_to->geom; + gsp = gp->softc; + ms = gsp->softc; + return (0); +} + +static void +g_sunlabel_dumpconf(struct sbuf *sb, char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp) +{ + + g_slice_dumpconf(sb, indent, gp, cp, pp); +} + +static struct g_geom * +g_sunlabel_taste(struct g_method *mp, struct g_provider *pp, struct thread *tp, int flags) +{ + struct g_geom *gp; + struct g_consumer *cp; + struct g_provider *pp2; + int error, i, j, npart; + u_char *buf; + struct g_sunlabel_softc *ms; + u_int secsize, u, v, csize; + off_t mediasize; + + g_trace(G_T_TOPOLOGY, "g_sunlabel_taste(%s,%s)", mp->name, pp->name); + g_topology_assert(); + if (flags == G_TF_NORMAL && + !strcmp(pp->geom->method->name, BSD_METHOD_NAME)) + return (NULL); + gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_sunlabel_start); + if (gp == NULL) + return (NULL); + g_topology_unlock(); + gp->dumpconf = g_sunlabel_dumpconf; + npart = 0; + while (1) { /* a trick to allow us to use break */ + if (gp->rank != 2 && flags == G_TF_NORMAL) + break; + j = sizeof secsize; + error = g_io_getattr("GEOM::sectorsize", cp, &j, &secsize, tp); + if (error) { + secsize = 512; + printf("g_sunlabel_taste: error %d Sectors are %d bytes\n", + error, secsize); + } + j = sizeof mediasize; + error = g_io_getattr("GEOM::mediasize", cp, &j, &mediasize, tp); + if (error) { + mediasize = 0; + printf("g_error %d Mediasize is %lld bytes\n", + error, (long long)mediasize); + } + buf = g_read_data(cp, 0, secsize, &error); + if (buf == NULL || error != 0) + break; + + /* The second last short is a magic number */ + if (g_u16be(buf + 508) != 0xdabe) + break; + /* The shortword parity of the entire thing must be even */ + u = 0; + for (i = 0; i < 512; i += 2) + u ^= g_u16be(buf + i); + if (u != 0) + break; + if (bootverbose) { + g_hexdump(buf, 128); + for (i = 0; i < 8; i++) { + printf("part %d %u %u\n", i, + g_u32be(buf + 444 + i * 8), + g_u32be(buf + 448 + i * 8)); + } + printf("v_version = %d\n", g_u32be(buf + 128)); + printf("v_nparts = %d\n", g_u16be(buf + 140)); + for (i = 0; i < 8; i++) { + printf("v_part[%d] = %d %d\n", + i, g_u16be(buf + 142 + i * 4), + g_u16be(buf + 144 + i * 4)); + } + printf("v_sanity %x\n", g_u32be(buf + 186)); + printf("v_version = %d\n", g_u32be(buf + 128)); + printf("v_rpm %d\n", g_u16be(buf + 420)); + printf("v_totalcyl %d\n", g_u16be(buf + 422)); + printf("v_cyl %d\n", g_u16be(buf + 432)); + printf("v_alt %d\n", g_u16be(buf + 434)); + printf("v_head %d\n", g_u16be(buf + 436)); + printf("v_sec %d\n", g_u16be(buf + 438)); + } + + csize = g_u16be(buf + 436) * g_u16be(buf + 438); + + for (i = 0; i < 8; i++) { + v = g_u32be(buf + 444 + i * 8); + u = g_u32be(buf + 448 + i * 8); + if (u == 0) + continue; + npart++; + pp2 = g_slice_addslice(gp, i, + ((off_t)v * csize) << 9ULL, + ((off_t)u) << 9ULL, + "%s%c", pp->name, 'a' + i); + g_error_provider(pp2, 0); + } + break; + } + g_topology_lock(); + error = g_access_rel(cp, -1, 0, 0); + if (npart > 0) + return (gp); + g_std_spoiled(cp); + return (NULL); +} + +static struct g_method g_sunlabel_method = { + BSD_METHOD_NAME, + g_sunlabel_taste, + g_slice_access, + g_slice_orphan, + NULL, + G_METHOD_INITSTUFF +}; + +DECLARE_GEOM_METHOD(g_sunlabel_method, g_sunlabel); |
