summaryrefslogtreecommitdiffstats
path: root/libblkid/bsd.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--libblkid/bsd.c243
1 files changed, 0 insertions, 243 deletions
diff --git a/libblkid/bsd.c b/libblkid/bsd.c
deleted file mode 100644
index ee15ad2fe..000000000
--- a/libblkid/bsd.c
+++ /dev/null
@@ -1,243 +0,0 @@
-/*
- * BSD/OSF 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.
- *
- * Inspired by fdisk, partx, Linux kernel, libparted and openbsd header files.
- */
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdint.h>
-
-#include "partitions.h"
-
-#define BSD_MAXPARTITIONS 16
-#define BSD_FS_UNUSED 0
-
-struct bsd_disklabel {
- uint32_t d_magic; /* the magic number */
- int16_t d_type; /* drive type */
- int16_t d_subtype; /* controller/d_type specific */
- char d_typename[16]; /* type name, e.g. "eagle" */
- char d_packname[16]; /* pack identifier */
-
- /* disk geometry: */
- uint32_t d_secsize; /* # of bytes per sector */
- uint32_t d_nsectors; /* # of data sectors per track */
- uint32_t d_ntracks; /* # of tracks per cylinder */
- uint32_t d_ncylinders; /* # of data cylinders per unit */
- uint32_t d_secpercyl; /* # of data sectors per cylinder */
- uint32_t d_secperunit; /* # of data sectors per unit */
-
- /*
- * Spares (bad sector replacements) below
- * are not counted in d_nsectors or d_secpercyl.
- * Spare sectors are assumed to be physical sectors
- * which occupy space at the end of each track and/or cylinder.
- */
- uint16_t d_sparespertrack; /* # of spare sectors per track */
- uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
-
- /*
- * Alternate cylinders include maintenance, replacement,
- * configuration description areas, etc.
- */
- uint32_t d_acylinders; /* # of alt. cylinders per unit */
-
- /* hardware characteristics: */
- /*
- * d_interleave, d_trackskew and d_cylskew describe perturbations
- * in the media format used to compensate for a slow controller.
- * Interleave is physical sector interleave, set up by the formatter
- * or controller when formatting. When interleaving is in use,
- * logically adjacent sectors are not physically contiguous,
- * but instead are separated by some number of sectors.
- * It is specified as the ratio of physical sectors traversed
- * per logical sector. Thus an interleave of 1:1 implies contiguous
- * layout, while 2:1 implies that logical sector 0 is separated
- * by one sector from logical sector 1.
- * d_trackskew is the offset of sector 0 on track N
- * relative to sector 0 on track N-1 on the same cylinder.
- * Finally, d_cylskew is the offset of sector 0 on cylinder N
- * relative to sector 0 on cylinder N-1.
- */
- uint16_t d_rpm; /* rotational speed */
- uint16_t d_interleave; /* hardware sector interleave */
- uint16_t d_trackskew; /* sector 0 skew, per track */
- uint16_t d_cylskew; /* sector 0 skew, per cylinder */
- uint32_t d_headswitch; /* head switch time, usec */
- uint32_t d_trkseek; /* track-to-track seek, usec */
- uint32_t d_flags; /* generic flags */
- uint32_t d_drivedata[5]; /* drive-type specific information */
- uint32_t d_spare[5]; /* reserved for future use */
- uint32_t d_magic2; /* the magic number (again) */
- uint16_t d_checksum; /* xor of data incl. partitions */
-
- /* filesystem and partition information: */
- uint16_t d_npartitions; /* number of partitions in following */
- uint32_t d_bbsize; /* size of boot area at sn0, bytes */
- uint32_t d_sbsize; /* max size of fs superblock, bytes */
-
- struct bsd_partition { /* the partition table */
- uint32_t p_size; /* number of sectors in partition */
- uint32_t p_offset; /* starting sector */
- uint32_t p_fsize; /* filesystem basic fragment size */
- uint8_t p_fstype; /* filesystem type, see below */
- uint8_t p_frag; /* filesystem fragments per block */
- uint16_t p_cpg; /* filesystem cylinders per group */
- } __attribute__((packed)) d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
-} __attribute__((packed));
-
-
-/* Returns 'blkid_idmag' in 512-sectors */
-#define BLKID_MAG_SECTOR(_mag) (((_mag)->kboff * 2) + ((_mag)->sboff >> 9))
-
-/* Returns 'blkid_idmag' in bytes */
-#define BLKID_MAG_OFFSET(_mag) ((_mag)->kboff >> 10) + ((_mag)->sboff)
-
-/* Returns 'blkid_idmag' offset in bytes within the last sector */
-#define BLKID_MAG_LASTOFFSET(_mag) \
- (BLKID_MAG_OFFSET(_mag) - (BLKID_MAG_SECTOR(_mag) << 9))
-
-static int probe_bsd_pt(blkid_probe pr, const struct blkid_idmag *mag)
-{
- struct bsd_disklabel *l;
- struct bsd_partition *p;
- const char *name = "bsd" ;
- blkid_parttable tab = NULL;
- blkid_partition parent;
- blkid_partlist ls;
- int i, nparts = BSD_MAXPARTITIONS;
- unsigned char *data;
-
- if (blkid_partitions_need_typeonly(pr))
- /* caller does not ask for details about partitions */
- return 0;
-
- data = blkid_probe_get_sector(pr, BLKID_MAG_SECTOR(mag));
- if (!data)
- goto nothing;
-
- l = (struct bsd_disklabel *) data + BLKID_MAG_LASTOFFSET(mag);
-
- ls = blkid_probe_get_partlist(pr);
- if (!ls)
- goto err;
-
- /* try to determine the real type of BSD system according to
- * (parental) primary partition */
- parent = blkid_partlist_get_parent(ls);
- if (parent) {
- switch(blkid_partition_get_type(parent)) {
- case BLKID_FREEBSD_PARTITION:
- name = "freebsd";
- break;
- case BLKID_NETBSD_PARTITION:
- name = "netbsd";
- break;
- case BLKID_OPENBSD_PARTITION:
- name = "openbsd";
- break;
- default:
- DBG(DEBUG_LOWPROBE, printf(
- "WARNING: BSD label detected on unknown (0x%x) "
- "primary partition\n",
- blkid_partition_get_type(parent)));
- break;
- }
- }
-
- tab = blkid_partlist_new_parttable(ls, name, BLKID_MAG_OFFSET(mag));
- if (!tab)
- goto err;
-
- if (le16_to_cpu(l->d_npartitions) < BSD_MAXPARTITIONS)
- nparts = le16_to_cpu(l->d_npartitions);
-
- else if (le16_to_cpu(l->d_npartitions) > BSD_MAXPARTITIONS)
- DBG(DEBUG_LOWPROBE, printf(
- "WARNING: ignore %d more BSD partitions\n",
- le16_to_cpu(l->d_npartitions) - BSD_MAXPARTITIONS));
-
- for (i = 0, p = l->d_partitions; i < nparts; i++, p++) {
- blkid_partition par;
- uint32_t start, size;
-
- /* TODO: in fdisk-mode returns all non-zero (p_size) partitions */
- if (p->p_fstype == BSD_FS_UNUSED)
- continue;
-
- start = le32_to_cpu(p->p_offset);
- size = le32_to_cpu(p->p_size);
-
- if (parent && !blkid_is_nested_dimension(parent, start, size)) {
- DBG(DEBUG_LOWPROBE, printf(
- "WARNING: BSD 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, p->p_fstype);
- }
-
- return 0;
-
-nothing:
- return 1;
-err:
- return -1;
-}
-
-
-/*
- * All BSD variants use the same magic string (little-endian),
- * and the same disklabel.
- *
- * The difference between {Free,Open,...}BSD is in the (parental)
- * primary partition type.
- *
- * See also: http://en.wikipedia.org/wiki/BSD_disklabel
- *
- * The location of BSD disk label is architecture specific and in defined by
- * LABELSECTOR and LABELOFFSET macros in the disklabel.h file. The location
- * also depends on BSD variant, FreeBSD uses only one location, NetBSD and
- * OpenBSD are more creative...
- *
- * The basic overview:
- *
- * arch | LABELSECTOR | LABELOFFSET
- * ------------------------+-------------+------------
- * amd64 arm hppa hppa64 | |
- * i386, macppc, mvmeppc | 1 | 0
- * sgi, aviion, sh, socppc | |
- * ------------------------+-------------+------------
- * alpha luna88k mac68k | 0 | 64
- * sparc(OpenBSD) vax | |
- * ------------------------+-------------+------------
- * spark64 sparc(NetBSD) | 0 | 128
- * ------------------------+-------------+------------
- *
- * ...and more (see http://fxr.watson.org/fxr/ident?v=NETBSD;i=LABELSECTOR)
- *
- */
-const struct blkid_idinfo bsd_pt_idinfo =
-{
- .name = "bsd",
- .probefunc = probe_bsd_pt,
- .magics =
- {
- { .magic = "\x57\x45\x56\x82", .len = 4, .sboff = 512 },
- { .magic = "\x57\x45\x56\x82", .len = 4, .sboff = 64 },
- { .magic = "\x57\x45\x56\x82", .len = 4, .sboff = 128 },
- { NULL }
- }
-};
-