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Diffstat (limited to 'extras/volume_id/lib/ext.c')
-rw-r--r--extras/volume_id/lib/ext.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/extras/volume_id/lib/ext.c b/extras/volume_id/lib/ext.c
deleted file mode 100644
index 13ec470291..0000000000
--- a/extras/volume_id/lib/ext.c
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
- * volume_id - reads filesystem label and uuid
- *
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
- * Copyright (C) 2008 Theodore Ts'o <tytso@mit.edu>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <ctype.h>
-
-#include "libvolume_id.h"
-#include "libvolume_id-private.h"
-
-struct ext2_super_block {
- uint32_t s_inodes_count;
- uint32_t s_blocks_count;
- uint32_t s_r_blocks_count;
- uint32_t s_free_blocks_count;
- uint32_t s_free_inodes_count;
- uint32_t s_first_data_block;
- uint32_t s_log_block_size;
- uint32_t s_log_frag_size;
- uint32_t s_blocks_per_group;
- uint32_t s_frags_per_group;
- uint32_t s_inodes_per_group;
- uint32_t s_mtime;
- uint32_t s_wtime;
- uint16_t s_mnt_count;
- uint16_t s_max_mnt_count;
- uint16_t s_magic;
- uint16_t s_state;
- uint16_t s_errors;
- uint16_t s_minor_rev_level;
- uint32_t s_lastcheck;
- uint32_t s_checkinterval;
- uint32_t s_creator_os;
- uint32_t s_rev_level;
- uint16_t s_def_resuid;
- uint16_t s_def_resgid;
- uint32_t s_first_ino;
- uint16_t s_inode_size;
- uint16_t s_block_group_nr;
- uint32_t s_feature_compat;
- uint32_t s_feature_incompat;
- uint32_t s_feature_ro_compat;
- uint8_t s_uuid[16];
- uint8_t s_volume_name[16];
- uint8_t s_last_mounted[64];
- uint32_t s_algorithm_usage_bitmap;
- uint8_t s_prealloc_blocks;
- uint8_t s_prealloc_dir_blocks;
- uint16_t s_reserved_gdt_blocks;
- uint8_t s_journal_uuid[16];
- uint32_t s_journal_inum;
- uint32_t s_journal_dev;
- uint32_t s_last_orphan;
- uint32_t s_hash_seed[4];
- uint8_t s_def_hash_version;
- uint8_t s_jnl_backup_type;
- uint16_t s_reserved_word_pad;
- uint32_t s_default_mount_opts;
- uint32_t s_first_meta_bg;
- uint32_t s_mkfs_time;
- uint32_t s_jnl_blocks[17];
- uint32_t s_blocks_count_hi;
- uint32_t s_r_blocks_count_hi;
- uint32_t s_free_blocks_hi;
- uint16_t s_min_extra_isize;
- uint16_t s_want_extra_isize;
- uint32_t s_flags;
-} PACKED;
-
-#define EXT_SUPER_MAGIC 0xEF53
-#define EXT2_FLAGS_TEST_FILESYS 0x0004
-#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
-#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
-#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
-
-
-#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
-
-#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
- EXT2_FEATURE_INCOMPAT_META_BG)
-#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
-
-#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP
-
-#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
- EXT3_FEATURE_INCOMPAT_RECOVER| \
- EXT2_FEATURE_INCOMPAT_META_BG)
-#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP
-
-#define EXT_SUPERBLOCK_OFFSET 0x400
-#define EXT3_MIN_BLOCK_SIZE 0x400
-#define EXT3_MAX_BLOCK_SIZE 0x1000
-
-int volume_id_probe_ext(struct volume_id *id, uint64_t off, uint64_t size)
-{
- struct ext2_super_block *es;
- size_t bsize;
- uint32_t feature_compat;
- uint32_t feature_ro_compat;
- uint32_t feature_incompat;
- uint32_t flags;
-
- info("probing at offset 0x%" PRIx64 "\n", off);
-
- es = (struct ext2_super_block *) volume_id_get_buffer(id, off + EXT_SUPERBLOCK_OFFSET, 0x200);
- if (es == NULL)
- return -1;
-
- if (es->s_magic != cpu_to_le16(EXT_SUPER_MAGIC))
- return -1;
-
- bsize = 0x400 << le32_to_cpu(es->s_log_block_size);
- dbg("ext blocksize 0x%zx\n", bsize);
- if (bsize < EXT3_MIN_BLOCK_SIZE || bsize > EXT3_MAX_BLOCK_SIZE) {
- dbg("invalid ext blocksize\n");
- return -1;
- }
-
- feature_compat = le32_to_cpu(es->s_feature_compat);
- feature_ro_compat = le32_to_cpu(es->s_feature_ro_compat);
- feature_incompat = le32_to_cpu(es->s_feature_incompat);
- flags = le32_to_cpu(es->s_flags);
-
- /* external journal device is jbd */
- if ((feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) != 0) {
- volume_id_set_usage(id, VOLUME_ID_OTHER);
- id->type = "jbd";
- goto found;
- }
-
- /* has journal */
- if ((feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) != 0) {
- /* "use on development code" is ext4dev */
- if ((flags & EXT2_FLAGS_TEST_FILESYS) != 0) {
- id->type = "ext4dev";
- goto found;
- }
-
- /* incompatible ext3 features is ext4 */
- if ((feature_ro_compat & EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) != 0 ||
- (feature_incompat & EXT3_FEATURE_INCOMPAT_UNSUPPORTED) != 0) {
- id->type = "ext4";
- goto found;
- }
-
- id->type = "ext3";
- goto found;
- } else {
- /* no incompatible ext2 feature is ext2 */
- if ((feature_ro_compat & EXT2_FEATURE_RO_COMPAT_UNSUPPORTED) == 0 &&
- (feature_incompat & EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0) {
- id->type = "ext2";
- goto found;
- }
- }
-
- return -1;
-
-found:
- volume_id_set_label_raw(id, es->s_volume_name, 16);
- volume_id_set_label_string(id, es->s_volume_name, 16);
- volume_id_set_uuid(id, es->s_uuid, 0, UUID_DCE);
- snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u",
- le32_to_cpu(es->s_rev_level), le16_to_cpu(es->s_minor_rev_level));
-
- volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
- return 0;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-02 08:39:16 +0000