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authorbigbiff <bigbiff@teamw.in>2015-01-02 01:44:14 +0100
committerDees Troy <dees_troy@teamw.in>2015-01-05 04:38:42 +0100
commit7b4c7a681cc4c0a53dc8a8baf4853e921cfbf5de (patch)
treefb69cb515cb4ab675d5850684cc402100b7a2a22 /libblkid/exfat.c
parentcrypto: remove unused libs and clean up makefile (diff)
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Diffstat (limited to 'libblkid/exfat.c')
-rw-r--r--libblkid/exfat.c146
1 files changed, 0 insertions, 146 deletions
diff --git a/libblkid/exfat.c b/libblkid/exfat.c
deleted file mode 100644
index 215c67114..000000000
--- a/libblkid/exfat.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Copyright (C) 2010 Andrew Nayenko <resver@gmail.com>
- *
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- */
-#include "superblocks.h"
-
-struct exfat_super_block {
- uint8_t jump[3];
- uint8_t oem_name[8];
- uint8_t __unused1[53];
- uint64_t block_start;
- uint64_t block_count;
- uint32_t fat_block_start;
- uint32_t fat_block_count;
- uint32_t cluster_block_start;
- uint32_t cluster_count;
- uint32_t rootdir_cluster;
- uint8_t volume_serial[4];
- struct {
- uint8_t minor;
- uint8_t major;
- } version;
- uint16_t volume_state;
- uint8_t block_bits;
- uint8_t bpc_bits;
- uint8_t fat_count;
- uint8_t drive_no;
- uint8_t allocated_percent;
-} __attribute__((__packed__));
-
-struct exfat_entry_label {
- uint8_t type;
- uint8_t length;
- uint8_t name[30];
-} __attribute__((__packed__));
-
-#define BLOCK_SIZE(sb) (1 << (sb)->block_bits)
-#define CLUSTER_SIZE(sb) (BLOCK_SIZE(sb) << (sb)->bpc_bits)
-#define EXFAT_FIRST_DATA_CLUSTER 2
-#define EXFAT_LAST_DATA_CLUSTER 0xffffff6
-#define EXFAT_ENTRY_SIZE 32
-
-#define EXFAT_ENTRY_EOD 0x00
-#define EXFAT_ENTRY_LABEL 0x83
-
-static blkid_loff_t block_to_offset(const struct exfat_super_block *sb,
- blkid_loff_t block)
-{
- return (blkid_loff_t) block << sb->block_bits;
-}
-
-static blkid_loff_t cluster_to_block(const struct exfat_super_block *sb,
- uint32_t cluster)
-{
- return le32_to_cpu(sb->cluster_block_start) +
- ((blkid_loff_t) (cluster - EXFAT_FIRST_DATA_CLUSTER)
- << sb->bpc_bits);
-}
-
-static blkid_loff_t cluster_to_offset(const struct exfat_super_block *sb,
- uint32_t cluster)
-{
- return block_to_offset(sb, cluster_to_block(sb, cluster));
-}
-
-static uint32_t next_cluster(blkid_probe pr,
- const struct exfat_super_block *sb, uint32_t cluster)
-{
- uint32_t *next;
- blkid_loff_t fat_offset;
-
- fat_offset = block_to_offset(sb, le32_to_cpu(sb->fat_block_start))
- + (blkid_loff_t) cluster * sizeof(cluster);
- next = (uint32_t *) blkid_probe_get_buffer(pr, fat_offset,
- sizeof(uint32_t));
- if (!next)
- return 0;
- return le32_to_cpu(*next);
-}
-
-static struct exfat_entry_label *find_label(blkid_probe pr,
- const struct exfat_super_block *sb)
-{
- uint32_t cluster = le32_to_cpu(sb->rootdir_cluster);
- blkid_loff_t offset = cluster_to_offset(sb, cluster);
- uint8_t *entry;
-
- for (;;) {
- entry = (uint8_t *) blkid_probe_get_buffer(pr, offset,
- EXFAT_ENTRY_SIZE);
- if (!entry)
- return NULL;
- if (entry[0] == EXFAT_ENTRY_EOD)
- return NULL;
- if (entry[0] == EXFAT_ENTRY_LABEL)
- return (struct exfat_entry_label *) entry;
- offset += EXFAT_ENTRY_SIZE;
- if (offset % CLUSTER_SIZE(sb) == 0) {
- cluster = next_cluster(pr, sb, cluster);
- if (cluster < EXFAT_FIRST_DATA_CLUSTER)
- return NULL;
- if (cluster > EXFAT_LAST_DATA_CLUSTER)
- return NULL;
- offset = cluster_to_offset(sb, cluster);
- }
- }
-}
-
-static int probe_exfat(blkid_probe pr, const struct blkid_idmag *mag)
-{
- struct exfat_super_block *sb;
- struct exfat_entry_label *label;
-
- sb = blkid_probe_get_sb(pr, mag, struct exfat_super_block);
- if (!sb)
- return -1;
-
- label = find_label(pr, sb);
- if (label)
- blkid_probe_set_utf8label(pr, label->name,
- min(label->length * 2, 30), BLKID_ENC_UTF16LE);
-
- blkid_probe_sprintf_uuid(pr, sb->volume_serial, 4,
- "%02hhX%02hhX-%02hhX%02hhX",
- sb->volume_serial[3], sb->volume_serial[2],
- sb->volume_serial[1], sb->volume_serial[0]);
-
- blkid_probe_sprintf_version(pr, "%u.%u",
- sb->version.major, sb->version.minor);
-
- return 0;
-}
-
-const struct blkid_idinfo exfat_idinfo =
-{
- .name = "exfat",
- .usage = BLKID_USAGE_FILESYSTEM,
- .probefunc = probe_exfat,
- .magics =
- {
- { .magic = "EXFAT ", .len = 8, .sboff = 3 },
- { NULL }
- }
-};