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* sun (solaris-sparc) partition parsing code
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* Copyright (C) 2009 Karel Zak <kzak@redhat.com>
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* This file may be redistributed under the terms of the
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* GNU Lesser General Public License.
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#include "partitions.h"
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/* Supported VTOC setting */
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#define SUN_VTOC_SANITY 0x600DDEEE /* magic number */
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#define SUN_VTOC_VERSION 1
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#define SUN_MAXPARTITIONS 8
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#define SUN_TAG_WHOLEDISK 0x05
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struct sun_disklabel {
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unsigned char info[128]; /* Informative text string */
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uint32_t version; /* version */
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char volume[8]; /* volume name */
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uint16_t nparts; /* num of partitions */
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struct sun_info { /* partition information */
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uint16_t id; /* tag */
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} __attribute__ ((packed)) infos[8];
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uint16_t padding; /* padding */
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uint32_t bootinfo[3]; /* info needed by mboot */
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uint32_t sanity; /* magic number */
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uint32_t reserved[10]; /* padding */
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uint32_t timestamp[8]; /* partition timestamp */
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} __attribute__ ((packed)) vtoc;
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uint32_t write_reinstruct; /* sectors to skip, writes */
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uint32_t read_reinstruct; /* sectors to skip, reads */
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unsigned char spare[148]; /* padding */
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uint16_t rspeed; /* disk rotational speed */
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uint16_t pcylcount; /* physical cylinder count */
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uint16_t sparecyl; /* extra sects per cylinder */
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uint16_t ilfact; /* interleave factor */
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uint16_t ncyl; /* data cylinder count */
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uint16_t nacyl; /* alt. cylinder count */
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uint16_t ntrks; /* tracks per cylinder <---- */
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uint16_t nsect; /* sectors per track <---- */
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struct sun_partition { /* partitions */
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uint32_t start_cylinder;
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} __attribute__ ((packed)) partitions[8];
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uint16_t magic; /* magic number */
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uint16_t csum; /* label xor'd checksum */
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} __attribute__ ((packed));
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uint16_t count_checksum(struct sun_disklabel *label)
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uint16_t *ptr = ((uint16_t *) (label + 1)) - 1;
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for (sum = 0; ptr >= ((uint16_t *) label);)
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static int probe_sun_pt(blkid_probe pr, const struct blkid_idmag *mag)
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struct sun_disklabel *l;
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struct sun_partition *p;
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blkid_parttable tab = NULL;
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l = (struct sun_disklabel *) blkid_probe_get_sector(pr, 0);
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if (count_checksum(l)) {
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DBG(DEBUG_LOWPROBE, printf(
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"detected corrupted sun disk label -- ignore\n"));
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if (blkid_partitions_need_typeonly(pr))
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/* caller does not ask for details about partitions */
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ls = blkid_probe_get_partlist(pr);
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tab = blkid_partlist_new_parttable(ls, "sun", 0);
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/* sectors per cylinder (partition offset is in cylinders...) */
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spc = be16_to_cpu(l->ntrks) * be16_to_cpu(l->nsect);
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printf("Sun VTOC sanity=%u version=%u nparts=%u\n",
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be32_to_cpu(l->vtoc.sanity),
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be32_to_cpu(l->vtoc.version),
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be16_to_cpu(l->vtoc.nparts)));
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/* Check to see if we can use the VTOC table */
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use_vtoc = ((be32_to_cpu(l->vtoc.sanity) == SUN_VTOC_SANITY) &&
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(be32_to_cpu(l->vtoc.version) == SUN_VTOC_VERSION) &&
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(be16_to_cpu(l->vtoc.nparts) <= SUN_MAXPARTITIONS));
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/* Use 8 partition entries if not specified in validated VTOC */
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nparts = use_vtoc ? be16_to_cpu(l->vtoc.nparts) : SUN_MAXPARTITIONS;
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* So that old Linux-Sun partitions continue to work,
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* alow the VTOC to be used under the additional condition ...
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use_vtoc = use_vtoc || !(l->vtoc.sanity || l->vtoc.version || l->vtoc.nparts);
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for (i = 0, p = l->partitions; i < nparts; i++, p++) {
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blkid_loff_t start, size;
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uint16_t type = 0, flags = 0;
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start = be32_to_cpu(p->start_cylinder) * spc;
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size = be32_to_cpu(p->num_sectors);
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type = be16_to_cpu(l->vtoc.infos[i].id);
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flags = be16_to_cpu(l->vtoc.infos[i].flags);
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if (type == SUN_TAG_WHOLEDISK || !size) {
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blkid_partlist_increment_partno(ls);
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par = blkid_partlist_add_partition(ls, tab, start, size);
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blkid_partition_set_type(par, type);
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blkid_partition_set_flags(par, flags);
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const struct blkid_idinfo sun_pt_idinfo =
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.probefunc = probe_sun_pt,
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.magic = "\xDA\xBE", /* big-endian magic string */
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.sboff = offsetof(struct sun_disklabel, magic)
added
removed
shlibs/blkid/src/partitions/sun.c
