summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/fs/hfsplus/part_tbl.c
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/hfsplus/part_tbl.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
downloadFOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/hfsplus/part_tbl.c')
-rw-r--r--ANDROID_3.4.5/fs/hfsplus/part_tbl.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/ANDROID_3.4.5/fs/hfsplus/part_tbl.c b/ANDROID_3.4.5/fs/hfsplus/part_tbl.c
deleted file mode 100644
index eb355d81..00000000
--- a/ANDROID_3.4.5/fs/hfsplus/part_tbl.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * linux/fs/hfsplus/part_tbl.c
- *
- * Copyright (C) 1996-1997 Paul H. Hargrove
- * This file may be distributed under the terms of
- * the GNU General Public License.
- *
- * Original code to handle the new style Mac partition table based on
- * a patch contributed by Holger Schemel (aeglos@valinor.owl.de).
- *
- * In function preconditions the term "valid" applied to a pointer to
- * a structure means that the pointer is non-NULL and the structure it
- * points to has all fields initialized to consistent values.
- *
- */
-
-#include <linux/slab.h>
-#include "hfsplus_fs.h"
-
-/* offsets to various blocks */
-#define HFS_DD_BLK 0 /* Driver Descriptor block */
-#define HFS_PMAP_BLK 1 /* First block of partition map */
-#define HFS_MDB_BLK 2 /* Block (w/i partition) of MDB */
-
-/* magic numbers for various disk blocks */
-#define HFS_DRVR_DESC_MAGIC 0x4552 /* "ER": driver descriptor map */
-#define HFS_OLD_PMAP_MAGIC 0x5453 /* "TS": old-type partition map */
-#define HFS_NEW_PMAP_MAGIC 0x504D /* "PM": new-type partition map */
-#define HFS_SUPER_MAGIC 0x4244 /* "BD": HFS MDB (super block) */
-#define HFS_MFS_SUPER_MAGIC 0xD2D7 /* MFS MDB (super block) */
-
-/*
- * The new style Mac partition map
- *
- * For each partition on the media there is a physical block (512-byte
- * block) containing one of these structures. These blocks are
- * contiguous starting at block 1.
- */
-struct new_pmap {
- __be16 pmSig; /* signature */
- __be16 reSigPad; /* padding */
- __be32 pmMapBlkCnt; /* partition blocks count */
- __be32 pmPyPartStart; /* physical block start of partition */
- __be32 pmPartBlkCnt; /* physical block count of partition */
- u8 pmPartName[32]; /* (null terminated?) string
- giving the name of this
- partition */
- u8 pmPartType[32]; /* (null terminated?) string
- giving the type of this
- partition */
- /* a bunch more stuff we don't need */
-} __packed;
-
-/*
- * The old style Mac partition map
- *
- * The partition map consists for a 2-byte signature followed by an
- * array of these structures. The map is terminated with an all-zero
- * one of these.
- */
-struct old_pmap {
- __be16 pdSig; /* Signature bytes */
- struct old_pmap_entry {
- __be32 pdStart;
- __be32 pdSize;
- __be32 pdFSID;
- } pdEntry[42];
-} __packed;
-
-static int hfs_parse_old_pmap(struct super_block *sb, struct old_pmap *pm,
- sector_t *part_start, sector_t *part_size)
-{
- struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
- int i;
-
- for (i = 0; i < 42; i++) {
- struct old_pmap_entry *p = &pm->pdEntry[i];
-
- if (p->pdStart && p->pdSize &&
- p->pdFSID == cpu_to_be32(0x54465331)/*"TFS1"*/ &&
- (sbi->part < 0 || sbi->part == i)) {
- *part_start += be32_to_cpu(p->pdStart);
- *part_size = be32_to_cpu(p->pdSize);
- return 0;
- }
- }
-
- return -ENOENT;
-}
-
-static int hfs_parse_new_pmap(struct super_block *sb, void *buf,
- struct new_pmap *pm, sector_t *part_start, sector_t *part_size)
-{
- struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
- int size = be32_to_cpu(pm->pmMapBlkCnt);
- int buf_size = hfsplus_min_io_size(sb);
- int res;
- int i = 0;
-
- do {
- if (!memcmp(pm->pmPartType, "Apple_HFS", 9) &&
- (sbi->part < 0 || sbi->part == i)) {
- *part_start += be32_to_cpu(pm->pmPyPartStart);
- *part_size = be32_to_cpu(pm->pmPartBlkCnt);
- return 0;
- }
-
- if (++i >= size)
- return -ENOENT;
-
- pm = (struct new_pmap *)((u8 *)pm + HFSPLUS_SECTOR_SIZE);
- if ((u8 *)pm - (u8 *)buf >= buf_size) {
- res = hfsplus_submit_bio(sb,
- *part_start + HFS_PMAP_BLK + i,
- buf, (void **)&pm, READ);
- if (res)
- return res;
- }
- } while (pm->pmSig == cpu_to_be16(HFS_NEW_PMAP_MAGIC));
-
- return -ENOENT;
-}
-
-/*
- * Parse the partition map looking for the start and length of a
- * HFS/HFS+ partition.
- */
-int hfs_part_find(struct super_block *sb,
- sector_t *part_start, sector_t *part_size)
-{
- void *buf, *data;
- int res;
-
- buf = kmalloc(hfsplus_min_io_size(sb), GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- res = hfsplus_submit_bio(sb, *part_start + HFS_PMAP_BLK,
- buf, &data, READ);
- if (res)
- goto out;
-
- switch (be16_to_cpu(*((__be16 *)data))) {
- case HFS_OLD_PMAP_MAGIC:
- res = hfs_parse_old_pmap(sb, data, part_start, part_size);
- break;
- case HFS_NEW_PMAP_MAGIC:
- res = hfs_parse_new_pmap(sb, buf, data, part_start, part_size);
- break;
- default:
- res = -ENOENT;
- break;
- }
-out:
- kfree(buf);
- return res;
-}