From 7b4c7a681cc4c0a53dc8a8baf4853e921cfbf5de Mon Sep 17 00:00:00 2001 From: bigbiff Date: Thu, 1 Jan 2015 19:44:14 -0500 Subject: Update blkid to 2.25.0 Break libblkid into 4 libraries: libblkid, libuuid, libutil-linux and libfdisk. This should help in later patch updates. Change-Id: I680d9a7feb031e5c29a603e9c58aff4b65826262 --- libblkid/exfat.c | 146 ------------------------------------------------------- 1 file changed, 146 deletions(-) delete mode 100644 libblkid/exfat.c (limited to 'libblkid/exfat.c') 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 - * - * 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 } - } -}; -- cgit v1.2.3