diff options
Diffstat (limited to 'util-linux/volume_id')
| -rw-r--r-- | util-linux/volume_id/Kbuild.src | 1 | ||||
| -rw-r--r-- | util-linux/volume_id/nilfs.c | 96 | ||||
| -rw-r--r-- | util-linux/volume_id/volume_id.c | 3 | ||||
| -rw-r--r-- | util-linux/volume_id/volume_id_internal.h | 2 |
4 files changed, 102 insertions, 0 deletions
diff --git a/util-linux/volume_id/Kbuild.src b/util-linux/volume_id/Kbuild.src index 70da65482..39a2d8cf4 100644 --- a/util-linux/volume_id/Kbuild.src +++ b/util-linux/volume_id/Kbuild.src @@ -31,6 +31,7 @@ lib-$(CONFIG_FEATURE_VOLUMEID_LINUXSWAP) += linux_swap.o ### lib-$(CONFIG_FEATURE_VOLUMEID_LVM) += lvm.o ### lib-$(CONFIG_FEATURE_VOLUMEID_MAC) += mac.o ### lib-$(CONFIG_FEATURE_VOLUMEID_MSDOS) += msdos.o +lib-$(CONFIG_FEATURE_VOLUMEID_NILFS) += nilfs.o lib-$(CONFIG_FEATURE_VOLUMEID_NTFS) += ntfs.o lib-$(CONFIG_FEATURE_VOLUMEID_REISERFS) += reiserfs.o lib-$(CONFIG_FEATURE_VOLUMEID_UDF) += udf.o diff --git a/util-linux/volume_id/nilfs.c b/util-linux/volume_id/nilfs.c new file mode 100644 index 000000000..ffa86d43c --- /dev/null +++ b/util-linux/volume_id/nilfs.c @@ -0,0 +1,96 @@ +/* + * volume_id - reads filesystem label and uuid + * + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * Copyright (C) 2012 S-G Bergh <sgb@systemasis.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "volume_id_internal.h" + +#define NILFS_UUID_SIZE 16 +#define NILFS_LABEL_SIZE 80 +#define NILFS_SB1_OFFSET 0x400 +#define NILFS_SB2_OFFSET 0x1000 +#define NILFS_MAGIC 0x3434 + +struct nilfs2_super_block { +/* 0x00 */ uint32_t s_rev_level; // Major revision level. +/* 0x04 */ uint16_t s_minor_rev_level; // Minor revision level. +/* 0x06 */ uint16_t s_magic; // Magic signature. +/* 0x08 */ uint16_t s_bytes; +/* 0x0A */ uint16_t s_flags; +/* 0x0C */ uint32_t s_crc_seed; +/* 0x10 */ uint32_t s_sum; +/* 0x14 */ uint32_t s_log_block_size; +/* 0x18 */ uint64_t s_nsegments; +/* 0x20 */ uint64_t s_dev_size; // Block device size in bytes. +/* 0x28 */ uint64_t s_first_data_block; +/* 0x30 */ uint32_t s_blocks_per_segment; +/* 0x34 */ uint32_t s_r_segments_percentage; +/* 0x38 */ uint64_t s_last_cno; +/* 0x40 */ uint64_t s_last_pseg; +/* 0x48 */ uint64_t s_last_seq; +/* 0x50 */ uint64_t s_free_blocks_count; +/* 0x58 */ uint64_t s_ctime; +/* 0x60 */ uint64_t s_mtime; +/* 0x68 */ uint64_t s_wtime; +/* 0x70 */ uint16_t s_mnt_count; +/* 0x72 */ uint16_t s_max_mnt_count; +/* 0x74 */ uint16_t s_state; +/* 0x76 */ uint16_t s_errors; +/* 0x78 */ uint64_t s_lastcheck; +/* 0x80 */ uint32_t s_checkinterval; +/* 0x84 */ uint32_t s_creator_os; +/* 0x88 */ uint16_t s_def_resuid; +/* 0x8A */ uint16_t s_def_resgid; +/* 0x8C */ uint32_t s_first_ino; +/* 0x90 */ uint16_t s_inode_size; +/* 0x92 */ uint16_t s_dat_entry_size; +/* 0x94 */ uint16_t s_checkpoint_size; +/* 0x96 */ uint16_t s_segment_usage_size; +/* 0x98 */ uint8_t s_uuid[NILFS_UUID_SIZE]; // 128-bit UUID for volume. +/* 0xA8 */ uint8_t s_volume_name[NILFS_LABEL_SIZE]; // Volume label. +/* 0xF8 */ // ... +} PACKED; + +int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/) +{ + struct nilfs2_super_block *sb; + + // Primary super block + dbg("nilfs: probing at offset 0x%x", NILFS_SB1_OFFSET); + + sb = volume_id_get_buffer(id, NILFS_SB1_OFFSET, sizeof(*sb)); + + if (sb == NULL) + return -1; + + if (sb->s_magic != NILFS_MAGIC) + return -1; + + // The secondary superblock is not always used, so ignore it for now. + // When used it is at 4K from the end of the partition (sb->s_dev_size - NILFS_SB2_OFFSET). + + volume_id_set_label_string(id, sb->s_volume_name, NILFS_LABEL_SIZE < VOLUME_ID_LABEL_SIZE ? + NILFS_LABEL_SIZE : VOLUME_ID_LABEL_SIZE); + volume_id_set_uuid(id, sb->s_uuid, UUID_DCE); + + if (sb->s_rev_level == 2) + IF_FEATURE_BLKID_TYPE(id->type = "nilfs2"); + + return 0; +} diff --git a/util-linux/volume_id/volume_id.c b/util-linux/volume_id/volume_id.c index f41d4e0d9..c1d615283 100644 --- a/util-linux/volume_id/volume_id.c +++ b/util-linux/volume_id/volume_id.c @@ -130,6 +130,9 @@ static const probe_fptr fs2[] = { #if ENABLE_FEATURE_VOLUMEID_UFS volume_id_probe_ufs, #endif +#if ENABLE_FEATURE_VOLUMEID_NILFS + volume_id_probe_nilfs, +#endif #if ENABLE_FEATURE_VOLUMEID_NTFS volume_id_probe_ntfs, #endif diff --git a/util-linux/volume_id/volume_id_internal.h b/util-linux/volume_id/volume_id_internal.h index 1c64046e5..1c2e0ffa6 100644 --- a/util-linux/volume_id/volume_id_internal.h +++ b/util-linux/volume_id/volume_id_internal.h @@ -212,6 +212,8 @@ int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_msdos_part_table(struct volume_id *id /*,uint64_t off*/); +int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/); + int FAST_FUNC volume_id_probe_ntfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_ocfs2(struct volume_id *id /*,uint64_t off*/); |