^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * fs/partitions/msdos.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Code extracted from drivers/block/genhd.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1991-1998 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * in the early extended-partition checks and added DM partitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Support for DiskManager v6.0x added by Mark Lord,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * with information provided by OnTrack. This now works for linux fdisk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * and LILO, as well as loadlin and bootln. Note that disks other than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * /dev/hda *must* have a "DOS" type 0x51 partition in the first slot (hda1).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * More flexible handling of extended partitions - aeb, 950831
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Check partition table on IDE disks for common CHS translations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Re-organised Feb 1998 Russell King
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * BSD disklabel support by Yossi Gottlieb <yogo@math.tau.ac.il>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * updated by Marc Espie <Marc.Espie@openbsd.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Unixware slices support by Andrzej Krzysztofowicz <ankry@mif.pg.gda.pl>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * and Krzysztof G. Baranowski <kgb@knm.org.pl>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/msdos_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/msdos_partition.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "check.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "efi.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Many architectures don't like unaligned accesses, while
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * the nr_sects and start_sect partition table entries are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * at a 2 (mod 4) address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static inline sector_t nr_sects(struct msdos_partition *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return (sector_t)get_unaligned_le32(&p->nr_sects);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static inline sector_t start_sect(struct msdos_partition *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return (sector_t)get_unaligned_le32(&p->start_sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static inline int is_extended_partition(struct msdos_partition *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return (p->sys_ind == DOS_EXTENDED_PARTITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) p->sys_ind == WIN98_EXTENDED_PARTITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) p->sys_ind == LINUX_EXTENDED_PARTITION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define MSDOS_LABEL_MAGIC1 0x55
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define MSDOS_LABEL_MAGIC2 0xAA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) msdos_magic_present(unsigned char *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return (p[0] == MSDOS_LABEL_MAGIC1 && p[1] == MSDOS_LABEL_MAGIC2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* Value is EBCDIC 'IBMA' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define AIX_LABEL_MAGIC1 0xC9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define AIX_LABEL_MAGIC2 0xC2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define AIX_LABEL_MAGIC3 0xD4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define AIX_LABEL_MAGIC4 0xC1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct msdos_partition *pt = (struct msdos_partition *) (p + 0x1be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) unsigned char *d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int slot, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (!(p[0] == AIX_LABEL_MAGIC1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) p[1] == AIX_LABEL_MAGIC2 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) p[2] == AIX_LABEL_MAGIC3 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) p[3] == AIX_LABEL_MAGIC4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Assume the partition table is valid if Linux partitions exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * Note that old Solaris/x86 partitions use the same indicator as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * Linux swap partitions, so we consider that a Linux partition as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) for (slot = 1; slot <= 4; slot++, pt++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (pt->sys_ind == SOLARIS_X86_PARTITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) pt->sys_ind == LINUX_RAID_PARTITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) pt->sys_ind == LINUX_DATA_PARTITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) pt->sys_ind == LINUX_LVM_PARTITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) is_extended_partition(pt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) d = read_part_sector(state, 7, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (d) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static void set_info(struct parsed_partitions *state, int slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) u32 disksig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct partition_meta_info *info = &state->parts[slot].info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) snprintf(info->uuid, sizeof(info->uuid), "%08x-%02x", disksig,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) info->volname[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) state->parts[slot].has_info = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * Create devices for each logical partition in an extended partition.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * The logical partitions form a linked list, with each entry being
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * a partition table with two entries. The first entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * is the real data partition (with a start relative to the partition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * table start). The second is a pointer to the next logical partition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * (with a start relative to the entire extended partition).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * We do not create a Linux partition for the partition tables, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * only for the actual data partitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static void parse_extended(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) sector_t first_sector, sector_t first_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) u32 disksig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct msdos_partition *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) unsigned char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) sector_t this_sector, this_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) int loopct = 0; /* number of links followed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) without finding a data partition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) this_sector = first_sector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) this_size = first_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (++loopct > 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (state->next == state->limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) data = read_part_sector(state, this_sector, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (!msdos_magic_present(data + 510))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) p = (struct msdos_partition *) (data + 0x1be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * Usually, the first entry is the real data partition,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * the 2nd entry is the next extended partition, or empty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * and the 3rd and 4th entries are unused.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * However, DRDOS sometimes has the extended partition as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * the first entry (when the data partition is empty),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * and OS/2 seems to use all four entries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * First process the data partition(s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) for (i = 0; i < 4; i++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) sector_t offs, size, next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (!nr_sects(p) || is_extended_partition(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /* Check the 3rd and 4th entries -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) these sometimes contain random garbage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) offs = start_sect(p)*sector_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) size = nr_sects(p)*sector_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) next = this_sector + offs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (i >= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (offs + size > this_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (next < first_sector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (next + size > first_sector + first_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) put_partition(state, state->next, next, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) set_info(state, state->next, disksig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (p->sys_ind == LINUX_RAID_PARTITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) state->parts[state->next].flags = ADDPART_FLAG_RAID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) loopct = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (++state->next == state->limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Next, process the (first) extended partition, if present.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * (So far, there seems to be no reason to make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * parse_extended() recursive and allow a tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * of extended partitions.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * It should be a link to the next logical partition.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) p -= 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) for (i = 0; i < 4; i++, p++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (nr_sects(p) && is_extended_partition(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (i == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) goto done; /* nothing left to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) this_sector = first_sector + start_sect(p) * sector_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) this_size = nr_sects(p) * sector_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) #define SOLARIS_X86_NUMSLICE 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #define SOLARIS_X86_VTOC_SANE (0x600DDEEEUL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct solaris_x86_slice {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) __le16 s_tag; /* ID tag of partition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) __le16 s_flag; /* permission flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) __le32 s_start; /* start sector no of partition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) __le32 s_size; /* # of blocks in partition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct solaris_x86_vtoc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) unsigned int v_bootinfo[3]; /* info needed by mboot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) __le32 v_sanity; /* to verify vtoc sanity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) __le32 v_version; /* layout version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) char v_volume[8]; /* volume name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) __le16 v_sectorsz; /* sector size in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) __le16 v_nparts; /* number of partitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) unsigned int v_reserved[10]; /* free space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct solaris_x86_slice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) v_slice[SOLARIS_X86_NUMSLICE]; /* slice headers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) unsigned int timestamp[SOLARIS_X86_NUMSLICE]; /* timestamp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) char v_asciilabel[128]; /* for compatibility */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* james@bpgc.com: Solaris has a nasty indicator: 0x82 which also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) indicates linux swap. Be careful before believing this is Solaris. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static void parse_solaris_x86(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) sector_t offset, sector_t size, int origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) #ifdef CONFIG_SOLARIS_X86_PARTITION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct solaris_x86_vtoc *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) short max_nparts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) v = read_part_sector(state, offset + 1, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (!v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (le32_to_cpu(v->v_sanity) != SOLARIS_X86_VTOC_SANE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) char tmp[1 + BDEVNAME_SIZE + 10 + 11 + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) snprintf(tmp, sizeof(tmp), " %s%d: <solaris:", state->name, origin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (le32_to_cpu(v->v_version) != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) char tmp[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) snprintf(tmp, sizeof(tmp), " cannot handle version %d vtoc>\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) le32_to_cpu(v->v_version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /* Ensure we can handle previous case of VTOC with 8 entries gracefully */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) max_nparts = le16_to_cpu(v->v_nparts) > 8 ? SOLARIS_X86_NUMSLICE : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) for (i = 0; i < max_nparts && state->next < state->limit; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct solaris_x86_slice *s = &v->v_slice[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) char tmp[3 + 10 + 1 + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (s->s_size == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) snprintf(tmp, sizeof(tmp), " [s%d]", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* solaris partitions are relative to current MS-DOS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * one; must add the offset of the current partition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) put_partition(state, state->next++,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) le32_to_cpu(s->s_start)+offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) le32_to_cpu(s->s_size));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) strlcat(state->pp_buf, " >\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /* check against BSD src/sys/sys/disklabel.h for consistency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) #define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #define BSD_MAXPARTITIONS 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) #define OPENBSD_MAXPARTITIONS 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) #define BSD_FS_UNUSED 0 /* disklabel unused partition entry ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct bsd_disklabel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) __le32 d_magic; /* the magic number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) __s16 d_type; /* drive type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) __s16 d_subtype; /* controller/d_type specific */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) char d_typename[16]; /* type name, e.g. "eagle" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) char d_packname[16]; /* pack identifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) __u32 d_secsize; /* # of bytes per sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) __u32 d_nsectors; /* # of data sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) __u32 d_ntracks; /* # of tracks per cylinder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) __u32 d_ncylinders; /* # of data cylinders per unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) __u32 d_secpercyl; /* # of data sectors per cylinder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) __u32 d_secperunit; /* # of data sectors per unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) __u16 d_sparespertrack; /* # of spare sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) __u16 d_sparespercyl; /* # of spare sectors per cylinder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) __u32 d_acylinders; /* # of alt. cylinders per unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) __u16 d_rpm; /* rotational speed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) __u16 d_interleave; /* hardware sector interleave */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) __u16 d_trackskew; /* sector 0 skew, per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) __u16 d_cylskew; /* sector 0 skew, per cylinder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) __u32 d_headswitch; /* head switch time, usec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) __u32 d_trkseek; /* track-to-track seek, usec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) __u32 d_flags; /* generic flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) #define NDDATA 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) __u32 d_drivedata[NDDATA]; /* drive-type specific information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) #define NSPARE 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) __u32 d_spare[NSPARE]; /* reserved for future use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) __le32 d_magic2; /* the magic number (again) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) __le16 d_checksum; /* xor of data incl. partitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /* filesystem and partition information: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) __le16 d_npartitions; /* number of partitions in following */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) __le32 d_bbsize; /* size of boot area at sn0, bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) __le32 d_sbsize; /* max size of fs superblock, bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct bsd_partition { /* the partition table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) __le32 p_size; /* number of sectors in partition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) __le32 p_offset; /* starting sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) __le32 p_fsize; /* filesystem basic fragment size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) __u8 p_fstype; /* filesystem type, see below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) __u8 p_frag; /* filesystem fragments per block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) __le16 p_cpg; /* filesystem cylinders per group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #if defined(CONFIG_BSD_DISKLABEL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * Create devices for BSD partitions listed in a disklabel, under a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * dos-like partition. See parse_extended() for more information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) static void parse_bsd(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) sector_t offset, sector_t size, int origin, char *flavour,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) int max_partitions)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct bsd_disklabel *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct bsd_partition *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) char tmp[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) l = read_part_sector(state, offset + 1, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (!l)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (le32_to_cpu(l->d_magic) != BSD_DISKMAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) snprintf(tmp, sizeof(tmp), " %s%d: <%s:", state->name, origin, flavour);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (le16_to_cpu(l->d_npartitions) < max_partitions)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) max_partitions = le16_to_cpu(l->d_npartitions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) for (p = l->d_partitions; p - l->d_partitions < max_partitions; p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) sector_t bsd_start, bsd_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (state->next == state->limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (p->p_fstype == BSD_FS_UNUSED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) bsd_start = le32_to_cpu(p->p_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) bsd_size = le32_to_cpu(p->p_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) /* FreeBSD has relative offset if C partition offset is zero */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (memcmp(flavour, "bsd\0", 4) == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) le32_to_cpu(l->d_partitions[2].p_offset) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) bsd_start += offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (offset == bsd_start && size == bsd_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /* full parent partition, we have it already */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (offset > bsd_start || offset+size < bsd_start+bsd_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) strlcat(state->pp_buf, "bad subpartition - ignored\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) put_partition(state, state->next++, bsd_start, bsd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (le16_to_cpu(l->d_npartitions) > max_partitions) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) snprintf(tmp, sizeof(tmp), " (ignored %d more)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) le16_to_cpu(l->d_npartitions) - max_partitions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) strlcat(state->pp_buf, " >\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) static void parse_freebsd(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) sector_t offset, sector_t size, int origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) #ifdef CONFIG_BSD_DISKLABEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) parse_bsd(state, offset, size, origin, "bsd", BSD_MAXPARTITIONS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static void parse_netbsd(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) sector_t offset, sector_t size, int origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) #ifdef CONFIG_BSD_DISKLABEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) parse_bsd(state, offset, size, origin, "netbsd", BSD_MAXPARTITIONS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) static void parse_openbsd(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) sector_t offset, sector_t size, int origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) #ifdef CONFIG_BSD_DISKLABEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) parse_bsd(state, offset, size, origin, "openbsd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) OPENBSD_MAXPARTITIONS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) #define UNIXWARE_DISKMAGIC (0xCA5E600DUL) /* The disk magic number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) #define UNIXWARE_DISKMAGIC2 (0x600DDEEEUL) /* The slice table magic nr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) #define UNIXWARE_NUMSLICE 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) #define UNIXWARE_FS_UNUSED 0 /* Unused slice entry ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct unixware_slice {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) __le16 s_label; /* label */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) __le16 s_flags; /* permission flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) __le32 start_sect; /* starting sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) __le32 nr_sects; /* number of sectors in slice */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) struct unixware_disklabel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) __le32 d_type; /* drive type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) __le32 d_magic; /* the magic number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) __le32 d_version; /* version number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) char d_serial[12]; /* serial number of the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) __le32 d_ncylinders; /* # of data cylinders per device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) __le32 d_ntracks; /* # of tracks per cylinder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) __le32 d_nsectors; /* # of data sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) __le32 d_secsize; /* # of bytes per sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) __le32 d_part_start; /* # of first sector of this partition*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) __le32 d_unknown1[12]; /* ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) __le32 d_alt_tbl; /* byte offset of alternate table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) __le32 d_alt_len; /* byte length of alternate table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) __le32 d_phys_cyl; /* # of physical cylinders per device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) __le32 d_phys_trk; /* # of physical tracks per cylinder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) __le32 d_phys_sec; /* # of physical sectors per track */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) __le32 d_phys_bytes; /* # of physical bytes per sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) __le32 d_unknown2; /* ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) __le32 d_unknown3; /* ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) __le32 d_pad[8]; /* pad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct unixware_vtoc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) __le32 v_magic; /* the magic number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) __le32 v_version; /* version number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) char v_name[8]; /* volume name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) __le16 v_nslices; /* # of slices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) __le16 v_unknown1; /* ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) __le32 v_reserved[10]; /* reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct unixware_slice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) v_slice[UNIXWARE_NUMSLICE]; /* slice headers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) } vtoc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }; /* 408 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * Create devices for Unixware partitions listed in a disklabel, under a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * dos-like partition. See parse_extended() for more information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) static void parse_unixware(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) sector_t offset, sector_t size, int origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) #ifdef CONFIG_UNIXWARE_DISKLABEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) struct unixware_disklabel *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) struct unixware_slice *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) l = read_part_sector(state, offset + 29, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) if (!l)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (le32_to_cpu(l->d_magic) != UNIXWARE_DISKMAGIC ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) le32_to_cpu(l->vtoc.v_magic) != UNIXWARE_DISKMAGIC2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) char tmp[1 + BDEVNAME_SIZE + 10 + 12 + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) snprintf(tmp, sizeof(tmp), " %s%d: <unixware:", state->name, origin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) p = &l->vtoc.v_slice[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) /* I omit the 0th slice as it is the same as whole disk. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) while (p - &l->vtoc.v_slice[0] < UNIXWARE_NUMSLICE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (state->next == state->limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (p->s_label != UNIXWARE_FS_UNUSED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) put_partition(state, state->next++,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) le32_to_cpu(p->start_sect),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) le32_to_cpu(p->nr_sects));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) strlcat(state->pp_buf, " >\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) #define MINIX_NR_SUBPARTITIONS 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * Minix 2.0.0/2.0.2 subpartition support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * Anand Krishnamurthy <anandk@wiproge.med.ge.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * Rajeev V. Pillai <rajeevvp@yahoo.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static void parse_minix(struct parsed_partitions *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) sector_t offset, sector_t size, int origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) #ifdef CONFIG_MINIX_SUBPARTITION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) unsigned char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) struct msdos_partition *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) data = read_part_sector(state, offset, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) p = (struct msdos_partition *)(data + 0x1be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /* The first sector of a Minix partition can have either
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * a secondary MBR describing its subpartitions, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * the normal boot sector. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (msdos_magic_present(data + 510) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) p->sys_ind == MINIX_PARTITION) { /* subpartition table present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) char tmp[1 + BDEVNAME_SIZE + 10 + 9 + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) snprintf(tmp, sizeof(tmp), " %s%d: <minix:", state->name, origin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) strlcat(state->pp_buf, tmp, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) for (i = 0; i < MINIX_NR_SUBPARTITIONS; i++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (state->next == state->limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) /* add each partition in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if (p->sys_ind == MINIX_PARTITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) put_partition(state, state->next++,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) start_sect(p), nr_sects(p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) strlcat(state->pp_buf, " >\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) #endif /* CONFIG_MINIX_SUBPARTITION */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) unsigned char id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) void (*parse)(struct parsed_partitions *, sector_t, sector_t, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) } subtypes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) {FREEBSD_PARTITION, parse_freebsd},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) {NETBSD_PARTITION, parse_netbsd},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) {OPENBSD_PARTITION, parse_openbsd},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {MINIX_PARTITION, parse_minix},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) {UNIXWARE_PARTITION, parse_unixware},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {SOLARIS_X86_PARTITION, parse_solaris_x86},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) {NEW_SOLARIS_X86_PARTITION, parse_solaris_x86},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) {0, NULL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) int msdos_partition(struct parsed_partitions *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) unsigned char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct msdos_partition *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) struct fat_boot_sector *fb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) u32 disksig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) data = read_part_sector(state, 0, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) * Note order! (some AIX disks, e.g. unbootable kind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) * have no MSDOS 55aa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) if (aix_magic_present(state, data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) #ifdef CONFIG_AIX_PARTITION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) return aix_partition(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) strlcat(state->pp_buf, " [AIX]", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (!msdos_magic_present(data + 510)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * Now that the 55aa signature is present, this is probably
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * either the boot sector of a FAT filesystem or a DOS-type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * partition table. Reject this in case the boot indicator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * is not 0 or 0x80.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) p = (struct msdos_partition *) (data + 0x1be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) for (slot = 1; slot <= 4; slot++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if (p->boot_ind != 0 && p->boot_ind != 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * Even without a valid boot inidicator value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * its still possible this is valid FAT filesystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * without a partition table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) fb = (struct fat_boot_sector *) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (slot == 1 && fb->reserved && fb->fats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) && fat_valid_media(fb->media)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) strlcat(state->pp_buf, "\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) #ifdef CONFIG_EFI_PARTITION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) p = (struct msdos_partition *) (data + 0x1be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) for (slot = 1 ; slot <= 4 ; slot++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) /* If this is an EFI GPT disk, msdos should ignore it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) if (p->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) p = (struct msdos_partition *) (data + 0x1be);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) disksig = le32_to_cpup((__le32 *)(data + 0x1b8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * Look for partitions in two passes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * First find the primary and DOS-type extended partitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * On the second pass look inside *BSD, Unixware and Solaris partitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) state->next = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) for (slot = 1 ; slot <= 4 ; slot++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) sector_t start = start_sect(p)*sector_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) sector_t size = nr_sects(p)*sector_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (!size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (is_extended_partition(p)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * prevent someone doing mkfs or mkswap on an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * extended partition, but leave room for LILO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * FIXME: this uses one logical sector for > 512b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) * sector, although it may not be enough/proper.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) sector_t n = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) n = min(size, max(sector_size, n));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) put_partition(state, slot, start, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) strlcat(state->pp_buf, " <", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) parse_extended(state, start, size, disksig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) strlcat(state->pp_buf, " >", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) put_partition(state, slot, start, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) set_info(state, slot, disksig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) if (p->sys_ind == LINUX_RAID_PARTITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) state->parts[slot].flags = ADDPART_FLAG_RAID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (p->sys_ind == DM6_PARTITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) strlcat(state->pp_buf, "[DM]", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) if (p->sys_ind == EZD_PARTITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) strlcat(state->pp_buf, "[EZD]", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) strlcat(state->pp_buf, "\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) /* second pass - output for each on a separate line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) p = (struct msdos_partition *) (0x1be + data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) for (slot = 1 ; slot <= 4 ; slot++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) unsigned char id = p->sys_ind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (!nr_sects(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) for (n = 0; subtypes[n].parse && id != subtypes[n].id; n++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (!subtypes[n].parse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) subtypes[n].parse(state, start_sect(p) * sector_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) nr_sects(p) * sector_size, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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