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g_part.c
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g_part.h
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g_part_apm.c
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g_part_bsd.c
(15.72 KB)
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g_part_bsd64.c
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g_part_ebr.c
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g_part_gpt.c
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g_part_if.m
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g_part_ldm.c
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g_part_mbr.c
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g_part_vtoc8.c
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Editing: g_part_apm.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2006-2008 Marcel Moolenaar * 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 ``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 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 <sys/param.h> #include <sys/apm.h> #include <sys/bio.h> #include <sys/endian.h> #include <sys/kernel.h> #include <sys/kobj.h> #include <sys/limits.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/queue.h> #include <sys/sbuf.h> #include <sys/systm.h> #include <sys/sysctl.h> #include <geom/geom.h> #include <geom/geom_int.h> #include <geom/part/g_part.h> #include "g_part_if.h" FEATURE(geom_part_apm, "GEOM partitioning class for Apple-style partitions"); struct g_part_apm_table { struct g_part_table base; struct apm_ddr ddr; struct apm_ent self; int tivo_series1; }; struct g_part_apm_entry { struct g_part_entry base; struct apm_ent ent; }; static int g_part_apm_add(struct g_part_table *, struct g_part_entry *, struct g_part_parms *); static int g_part_apm_create(struct g_part_table *, struct g_part_parms *); static int g_part_apm_destroy(struct g_part_table *, struct g_part_parms *); static void g_part_apm_dumpconf(struct g_part_table *, struct g_part_entry *, struct sbuf *, const char *); static int g_part_apm_dumpto(struct g_part_table *, struct g_part_entry *); static int g_part_apm_modify(struct g_part_table *, struct g_part_entry *, struct g_part_parms *); static const char *g_part_apm_name(struct g_part_table *, struct g_part_entry *, char *, size_t); static int g_part_apm_probe(struct g_part_table *, struct g_consumer *); static int g_part_apm_read(struct g_part_table *, struct g_consumer *); static const char *g_part_apm_type(struct g_part_table *, struct g_part_entry *, char *, size_t); static int g_part_apm_write(struct g_part_table *, struct g_consumer *); static int g_part_apm_resize(struct g_part_table *, struct g_part_entry *, struct g_part_parms *); static kobj_method_t g_part_apm_methods[] = { KOBJMETHOD(g_part_add, g_part_apm_add), KOBJMETHOD(g_part_create, g_part_apm_create), KOBJMETHOD(g_part_destroy, g_part_apm_destroy), KOBJMETHOD(g_part_dumpconf, g_part_apm_dumpconf), KOBJMETHOD(g_part_dumpto, g_part_apm_dumpto), KOBJMETHOD(g_part_modify, g_part_apm_modify), KOBJMETHOD(g_part_resize, g_part_apm_resize), KOBJMETHOD(g_part_name, g_part_apm_name), KOBJMETHOD(g_part_probe, g_part_apm_probe), KOBJMETHOD(g_part_read, g_part_apm_read), KOBJMETHOD(g_part_type, g_part_apm_type), KOBJMETHOD(g_part_write, g_part_apm_write), { 0, 0 } }; static struct g_part_scheme g_part_apm_scheme = { "APM", g_part_apm_methods, sizeof(struct g_part_apm_table), .gps_entrysz = sizeof(struct g_part_apm_entry), .gps_minent = 16, .gps_maxent = 4096, }; G_PART_SCHEME_DECLARE(g_part_apm); MODULE_VERSION(geom_part_apm, 0); static void swab(char *buf, size_t bufsz) { int i; char ch; for (i = 0; i < bufsz; i += 2) { ch = buf[i]; buf[i] = buf[i + 1]; buf[i + 1] = ch; } } static int apm_parse_type(const char *type, char *buf, size_t bufsz) { const char *alias; if (type[0] == '!') { type++; if (strlen(type) > bufsz) return (EINVAL); if (!strcmp(type, APM_ENT_TYPE_SELF) || !strcmp(type, APM_ENT_TYPE_UNUSED)) return (EINVAL); strncpy(buf, type, bufsz); return (0); } alias = g_part_alias_name(G_PART_ALIAS_APPLE_BOOT); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_APPLE_BOOT); return (0); } alias = g_part_alias_name(G_PART_ALIAS_APPLE_HFS); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_APPLE_HFS); return (0); } alias = g_part_alias_name(G_PART_ALIAS_APPLE_UFS); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_APPLE_UFS); return (0); } alias = g_part_alias_name(G_PART_ALIAS_FREEBSD); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_FREEBSD); return (0); } alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_FREEBSD_NANDFS); return (0); } alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_FREEBSD_SWAP); return (0); } alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_FREEBSD_UFS); return (0); } alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_FREEBSD_VINUM); return (0); } alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS); if (!strcasecmp(type, alias)) { strcpy(buf, APM_ENT_TYPE_FREEBSD_ZFS); return (0); } return (EINVAL); } static int apm_read_ent(struct g_consumer *cp, uint32_t blk, struct apm_ent *ent, int tivo_series1) { struct g_provider *pp; char *buf; int error; pp = cp->provider; buf = g_read_data(cp, pp->sectorsize * blk, pp->sectorsize, &error); if (buf == NULL) return (error); if (tivo_series1) swab(buf, pp->sectorsize); ent->ent_sig = be16dec(buf); ent->ent_pmblkcnt = be32dec(buf + 4); ent->ent_start = be32dec(buf + 8); ent->ent_size = be32dec(buf + 12); bcopy(buf + 16, ent->ent_name, sizeof(ent->ent_name)); bcopy(buf + 48, ent->ent_type, sizeof(ent->ent_type)); g_free(buf); return (0); } static int g_part_apm_add(struct g_part_table *basetable, struct g_part_entry *baseentry, struct g_part_parms *gpp) { struct g_part_apm_entry *entry; struct g_part_apm_table *table; int error; entry = (struct g_part_apm_entry *)baseentry; table = (struct g_part_apm_table *)basetable; entry->ent.ent_sig = APM_ENT_SIG; entry->ent.ent_pmblkcnt = table->self.ent_pmblkcnt; entry->ent.ent_start = gpp->gpp_start; entry->ent.ent_size = gpp->gpp_size; if (baseentry->gpe_deleted) { bzero(entry->ent.ent_type, sizeof(entry->ent.ent_type)); bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name)); } error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, sizeof(entry->ent.ent_type)); if (error) return (error); if (gpp->gpp_parms & G_PART_PARM_LABEL) { if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) return (EINVAL); strncpy(entry->ent.ent_name, gpp->gpp_label, sizeof(entry->ent.ent_name)); } if (baseentry->gpe_index >= table->self.ent_pmblkcnt) table->self.ent_pmblkcnt = baseentry->gpe_index + 1; KASSERT(table->self.ent_size >= table->self.ent_pmblkcnt, ("%s", __func__)); KASSERT(table->self.ent_size > baseentry->gpe_index, ("%s", __func__)); return (0); } static int g_part_apm_create(struct g_part_table *basetable, struct g_part_parms *gpp) { struct g_provider *pp; struct g_part_apm_table *table; uint32_t last; /* We don't nest, which means that our depth should be 0. */ if (basetable->gpt_depth != 0) return (ENXIO); table = (struct g_part_apm_table *)basetable; pp = gpp->gpp_provider; if (pp->sectorsize != 512 || pp->mediasize < (2 + 2 * basetable->gpt_entries) * pp->sectorsize) return (ENOSPC); /* APM uses 32-bit LBAs. */ last = MIN(pp->mediasize / pp->sectorsize, UINT32_MAX) - 1; basetable->gpt_first = 2 + basetable->gpt_entries; basetable->gpt_last = last; table->ddr.ddr_sig = APM_DDR_SIG; table->ddr.ddr_blksize = pp->sectorsize; table->ddr.ddr_blkcount = last + 1; table->self.ent_sig = APM_ENT_SIG; table->self.ent_pmblkcnt = basetable->gpt_entries + 1; table->self.ent_start = 1; table->self.ent_size = table->self.ent_pmblkcnt; strcpy(table->self.ent_name, "Apple"); strcpy(table->self.ent_type, APM_ENT_TYPE_SELF); return (0); } static int g_part_apm_destroy(struct g_part_table *basetable, struct g_part_parms *gpp) { /* Wipe the first 2 sectors to clear the partitioning. */ basetable->gpt_smhead |= 3; return (0); } static void g_part_apm_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry, struct sbuf *sb, const char *indent) { union { char name[APM_ENT_NAMELEN + 1]; char type[APM_ENT_TYPELEN + 1]; } u; struct g_part_apm_entry *entry; entry = (struct g_part_apm_entry *)baseentry; if (indent == NULL) { /* conftxt: libdisk compatibility */ sbuf_printf(sb, " xs APPLE xt %s", entry->ent.ent_type); } else if (entry != NULL) { /* confxml: partition entry information */ strncpy(u.name, entry->ent.ent_name, APM_ENT_NAMELEN); u.name[APM_ENT_NAMELEN] = '\0'; sbuf_printf(sb, "%s<label>", indent); g_conf_cat_escaped(sb, u.name); sbuf_cat(sb, "</label>\n"); strncpy(u.type, entry->ent.ent_type, APM_ENT_TYPELEN); u.type[APM_ENT_TYPELEN] = '\0'; sbuf_printf(sb, "%s<rawtype>", indent); g_conf_cat_escaped(sb, u.type); sbuf_cat(sb, "</rawtype>\n"); } else { /* confxml: scheme information */ } } static int g_part_apm_dumpto(struct g_part_table *table, struct g_part_entry *baseentry) { struct g_part_apm_entry *entry; entry = (struct g_part_apm_entry *)baseentry; return ((!strcmp(entry->ent.ent_type, APM_ENT_TYPE_FREEBSD_SWAP)) ? 1 : 0); } static int g_part_apm_modify(struct g_part_table *basetable, struct g_part_entry *baseentry, struct g_part_parms *gpp) { struct g_part_apm_entry *entry; int error; entry = (struct g_part_apm_entry *)baseentry; if (gpp->gpp_parms & G_PART_PARM_LABEL) { if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) return (EINVAL); } if (gpp->gpp_parms & G_PART_PARM_TYPE) { error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, sizeof(entry->ent.ent_type)); if (error) return (error); } if (gpp->gpp_parms & G_PART_PARM_LABEL) { strncpy(entry->ent.ent_name, gpp->gpp_label, sizeof(entry->ent.ent_name)); } return (0); } static int g_part_apm_resize(struct g_part_table *basetable, struct g_part_entry *baseentry, struct g_part_parms *gpp) { struct g_part_apm_entry *entry; struct g_provider *pp; if (baseentry == NULL) { pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider; basetable->gpt_last = MIN(pp->mediasize / pp->sectorsize, UINT32_MAX) - 1; return (0); } entry = (struct g_part_apm_entry *)baseentry; baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1; entry->ent.ent_size = gpp->gpp_size; return (0); } static const char * g_part_apm_name(struct g_part_table *table, struct g_part_entry *baseentry, char *buf, size_t bufsz) { snprintf(buf, bufsz, "s%d", baseentry->gpe_index + 1); return (buf); } static int g_part_apm_probe(struct g_part_table *basetable, struct g_consumer *cp) { struct g_provider *pp; struct g_part_apm_table *table; char *buf; int error; /* We don't nest, which means that our depth should be 0. */ if (basetable->gpt_depth != 0) return (ENXIO); table = (struct g_part_apm_table *)basetable; table->tivo_series1 = 0; pp = cp->provider; /* Sanity-check the provider. */ if (pp->mediasize < 4 * pp->sectorsize) return (ENOSPC); /* Check that there's a Driver Descriptor Record (DDR). */ buf = g_read_data(cp, 0L, pp->sectorsize, &error); if (buf == NULL) return (error); if (be16dec(buf) == APM_DDR_SIG) { /* Normal Apple DDR */ table->ddr.ddr_sig = be16dec(buf); table->ddr.ddr_blksize = be16dec(buf + 2); table->ddr.ddr_blkcount = be32dec(buf + 4); g_free(buf); if (table->ddr.ddr_blksize != pp->sectorsize) return (ENXIO); if (table->ddr.ddr_blkcount > pp->mediasize / pp->sectorsize) return (ENXIO); } else { /* * Check for Tivo drives, which have no DDR and a different * signature. Those whose first two bytes are 14 92 are * Series 2 drives, and aren't supported. Those that start * with 92 14 are series 1 drives and are supported. */ if (be16dec(buf) != 0x9214) { /* If this is 0x1492 it could be a series 2 drive */ g_free(buf); return (ENXIO); } table->ddr.ddr_sig = APM_DDR_SIG; /* XXX */ table->ddr.ddr_blksize = pp->sectorsize; /* XXX */ table->ddr.ddr_blkcount = MIN(pp->mediasize / pp->sectorsize, UINT32_MAX); table->tivo_series1 = 1; g_free(buf); } /* Check that there's a Partition Map. */ error = apm_read_ent(cp, 1, &table->self, table->tivo_series1); if (error) return (error); if (table->self.ent_sig != APM_ENT_SIG) return (ENXIO); if (strcmp(table->self.ent_type, APM_ENT_TYPE_SELF)) return (ENXIO); if (table->self.ent_pmblkcnt >= table->ddr.ddr_blkcount) return (ENXIO); return (G_PART_PROBE_PRI_NORM); } static int g_part_apm_read(struct g_part_table *basetable, struct g_consumer *cp) { struct apm_ent ent; struct g_part_apm_entry *entry; struct g_part_apm_table *table; int error, index; table = (struct g_part_apm_table *)basetable; basetable->gpt_first = table->self.ent_size + 1; basetable->gpt_last = table->ddr.ddr_blkcount - 1; basetable->gpt_entries = table->self.ent_size - 1; for (index = table->self.ent_pmblkcnt - 1; index > 0; index--) { error = apm_read_ent(cp, index + 1, &ent, table->tivo_series1); if (error) continue; if (!strcmp(ent.ent_type, APM_ENT_TYPE_UNUSED)) continue; entry = (struct g_part_apm_entry *)g_part_new_entry(basetable, index, ent.ent_start, ent.ent_start + ent.ent_size - 1); entry->ent = ent; } return (0); } static const char * g_part_apm_type(struct g_part_table *basetable, struct g_part_entry *baseentry, char *buf, size_t bufsz) { struct g_part_apm_entry *entry; const char *type; size_t len; entry = (struct g_part_apm_entry *)baseentry; type = entry->ent.ent_type; if (!strcmp(type, APM_ENT_TYPE_APPLE_BOOT)) return (g_part_alias_name(G_PART_ALIAS_APPLE_BOOT)); if (!strcmp(type, APM_ENT_TYPE_APPLE_HFS)) return (g_part_alias_name(G_PART_ALIAS_APPLE_HFS)); if (!strcmp(type, APM_ENT_TYPE_APPLE_UFS)) return (g_part_alias_name(G_PART_ALIAS_APPLE_UFS)); if (!strcmp(type, APM_ENT_TYPE_FREEBSD)) return (g_part_alias_name(G_PART_ALIAS_FREEBSD)); if (!strcmp(type, APM_ENT_TYPE_FREEBSD_NANDFS)) return (g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS)); if (!strcmp(type, APM_ENT_TYPE_FREEBSD_SWAP)) return (g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP)); if (!strcmp(type, APM_ENT_TYPE_FREEBSD_UFS)) return (g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS)); if (!strcmp(type, APM_ENT_TYPE_FREEBSD_VINUM)) return (g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM)); if (!strcmp(type, APM_ENT_TYPE_FREEBSD_ZFS)) return (g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS)); buf[0] = '!'; len = MIN(sizeof(entry->ent.ent_type), bufsz - 2); bcopy(type, buf + 1, len); buf[len + 1] = '\0'; return (buf); } static int g_part_apm_write(struct g_part_table *basetable, struct g_consumer *cp) { struct g_provider *pp; struct g_part_entry *baseentry; struct g_part_apm_entry *entry; struct g_part_apm_table *table; char *buf, *ptr; uint32_t index; int error; size_t tblsz; pp = cp->provider; table = (struct g_part_apm_table *)basetable; /* * Tivo Series 1 disk partitions are currently read-only. */ if (table->tivo_series1) return (EOPNOTSUPP); /* Write the DDR only when we're newly created. */ if (basetable->gpt_created) { buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO); be16enc(buf, table->ddr.ddr_sig); be16enc(buf + 2, table->ddr.ddr_blksize); be32enc(buf + 4, table->ddr.ddr_blkcount); error = g_write_data(cp, 0, buf, pp->sectorsize); g_free(buf); if (error) return (error); } /* Allocate the buffer for all entries */ tblsz = table->self.ent_pmblkcnt; buf = g_malloc(tblsz * pp->sectorsize, M_WAITOK | M_ZERO); /* Fill the self entry */ be16enc(buf, APM_ENT_SIG); be32enc(buf + 4, table->self.ent_pmblkcnt); be32enc(buf + 8, table->self.ent_start); be32enc(buf + 12, table->self.ent_size); bcopy(table->self.ent_name, buf + 16, sizeof(table->self.ent_name)); bcopy(table->self.ent_type, buf + 48, sizeof(table->self.ent_type)); baseentry = LIST_FIRST(&basetable->gpt_entry); for (index = 1; index < tblsz; index++) { entry = (baseentry != NULL && index == baseentry->gpe_index) ? (struct g_part_apm_entry *)baseentry : NULL; ptr = buf + index * pp->sectorsize; be16enc(ptr, APM_ENT_SIG); be32enc(ptr + 4, table->self.ent_pmblkcnt); if (entry != NULL && !baseentry->gpe_deleted) { be32enc(ptr + 8, entry->ent.ent_start); be32enc(ptr + 12, entry->ent.ent_size); bcopy(entry->ent.ent_name, ptr + 16, sizeof(entry->ent.ent_name)); bcopy(entry->ent.ent_type, ptr + 48, sizeof(entry->ent.ent_type)); } else { strcpy(ptr + 48, APM_ENT_TYPE_UNUSED); } if (entry != NULL) baseentry = LIST_NEXT(baseentry, gpe_entry); } for (index = 0; index < tblsz; index += maxphys / pp->sectorsize) { error = g_write_data(cp, (1 + index) * pp->sectorsize, buf + index * pp->sectorsize, (tblsz - index > maxphys / pp->sectorsize) ? maxphys: (tblsz - index) * pp->sectorsize); if (error) { g_free(buf); return (error); } } g_free(buf); return (0); }
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