text: /*
   * Solaris x86 partition parsing code
   *
   * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
   *
   * This file may be redistributed under the terms of the
   * GNU Lesser General Public License.
   */
  #include <stdio.h>
  #include <string.h>
  #include <stdlib.h>
  #include <stdint.h>
  
  #include "partitions.h"
  
  /*
   * Solaris-x86 is always within primary dos partition (nested PT table).  The
   * solaris-x86 vtoc allows to split the entire partition to "slices". The
   * offset (start) of the slice is always relatively to the primary dos
   * partition.
   *
   * Note that Solaris-SPARC uses entire disk with a different partitionning
   * scheme.
   */
  
  /* some other implementation than Linux kernel assume 8 partitions only */
  #define SOLARIS_MAXPARTITIONS	16
  
  /* disklabel (vtoc) location  */
  #define SOLARIS_SECTOR		1			/* in 512-sectors */
  #define SOLARIS_OFFSET		(SOLARIS_SECTOR << 9)	/* in bytes */
  #define SOLARIS_MAGICOFFSET	(SOLARIS_OFFSET + 12)	/* v_sanity offset in bytes */
  
  /* slice tags */
  #define SOLARIS_TAG_WHOLEDISK	5
  
  struct solaris_slice {
  	uint16_t s_tag;      /* ID tag of partition */
  	uint16_t s_flag;     /* permission flags */
  	uint32_t s_start;    /* start sector no of partition */
  	uint32_t s_size;     /* # of blocks in partition */
  } __attribute__((packed));
  
  struct solaris_vtoc {
  	unsigned int v_bootinfo[3];     /* info needed by mboot (unsupported) */
  
  	uint32_t     v_sanity;          /* to verify vtoc sanity */
  	uint32_t     v_version;         /* layout version */
  	char         v_volume[8];       /* volume name */
  	uint16_t     v_sectorsz;        /* sector size in bytes */
  	uint16_t     v_nparts;          /* number of partitions */
  	unsigned int v_reserved[10];    /* free space */
  
  	struct solaris_slice v_slice[SOLARIS_MAXPARTITIONS]; /* slices */
  
  	unsigned int timestamp[SOLARIS_MAXPARTITIONS]; /* timestamp (unsupported) */
  	char         v_asciilabel[128];	/* for compatibility */
  } __attribute__((packed));
  
  static int probe_solaris_pt(blkid_probe pr,
  		const struct blkid_idmag *mag __attribute__((__unused__)))
  {
  	struct solaris_vtoc *l;	/* disk label */
  	struct solaris_slice *p;	/* partitsion */
  	blkid_parttable tab = NULL;
  	blkid_partition parent;
  	blkid_partlist ls;
  	int i;
  	uint16_t nparts;
  
  	l = (struct solaris_vtoc *) blkid_probe_get_sector(pr, SOLARIS_SECTOR);
  	if (!l)
  		goto nothing;
  
  	if (le32_to_cpu(l->v_version) != 1) {
  		DBG(DEBUG_LOWPROBE, printf(
  			"WARNING: unsupported solaris x86 version %d, ignore\n",
  			le32_to_cpu(l->v_version)));
  		goto nothing;
  	}
  
  	if (blkid_partitions_need_typeonly(pr))
  		/* caller does not ask for details about partitions */
  		return 0;
  
  	ls = blkid_probe_get_partlist(pr);
  	if (!ls)
  		goto err;
  
  	parent = blkid_partlist_get_parent(ls);
  
  	tab = blkid_partlist_new_parttable(ls, "solaris", SOLARIS_OFFSET);
  	if (!tab)
  		goto err;
  
  	nparts = le16_to_cpu(l->v_nparts);
  	if (nparts > SOLARIS_MAXPARTITIONS)
  		nparts = SOLARIS_MAXPARTITIONS;
  
  	for (i = 1, p = &l->v_slice[0];	i < nparts; i++, p++) {
  
  		uint32_t start = le32_to_cpu(p->s_start);
  		uint32_t size = le32_to_cpu(p->s_size);
  		blkid_partition par;
  
  		if (size == 0 || le16_to_cpu(p->s_tag) == SOLARIS_TAG_WHOLEDISK)
  			continue;
  
  		if (parent)
  			/* Solaris slices are relative to the parent (primary
  			 * DOS partition) */
  			start += blkid_partition_get_start(parent);
  
  		if (parent && !blkid_is_nested_dimension(parent, start, size)) {
  			DBG(DEBUG_LOWPROBE, printf(
  				"WARNING: solaris partition (%d) overflow "
  				"detected, ignore\n", i));
  			continue;
  		}
  
  		par = blkid_partlist_add_partition(ls, tab, start, size);
  		if (!par)
  			goto err;
  
  		blkid_partition_set_type(par, le16_to_cpu(p->s_tag));
  		blkid_partition_set_flags(par, le16_to_cpu(p->s_flag));
  	}
  
  	return 0;
  
  nothing:
  	return 1;
  err:
  	return -1;
  }
  
  const struct blkid_idinfo solaris_x86_pt_idinfo =
  {
  	.name		= "solaris",
  	.probefunc	= probe_solaris_pt,
  	.magics		=
  	{
  		{
  		  .magic = "\xEE\xDE\x0D\x60",	/* little-endian magic string */
  		  .len = 4,			/* v_sanity size in bytes */
  		  .sboff = SOLARIS_MAGICOFFSET	/* offset of v_sanity */
  		},
  		{ NULL }
  	}
  };
  
  