936963416
Sven-Göran Bergh
2013-08-01
Subject
volume_id: add f2fs detection
Binary
No binary (build failed)
Architecture & Compiler Flags
—
Build Log
(log yok)
Commit Diff GitHub →
util-linux/volume_id/f2fs.c +95 -0util-linux/volume_id/volume_id.c +3 -0util-linux/volume_id/volume_id_internal.h +2 -0
util-linux/volume_id/f2fs.c+95 -0
| @@ -0,0 +1,95 @@ | |
| + | /* |
| + | * volume_id - reads filesystem label and uuid |
| + | * |
| + | * Copyright (C) 2012 S-G Bergh <[email protected]> |
| + | * |
| + | * Licensed under GPLv2, see file LICENSE in this source tree. |
| + | */ |
| + | |
| + | //kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_F2FS) += f2fs.o |
| + | |
| + | //config: |
| + | //config:config FEATURE_VOLUMEID_F2FS |
| + | //config: bool "f2fs filesystem" |
| + | //config: default y |
| + | //config: depends on VOLUMEID |
| + | //config: help |
| + | //config: F2FS (aka Flash-Friendly File System) is a log-structured file system, |
| + | //config: which is adapted to newer forms of storage. F2FS also remedies some |
| + | //config: known issues of the older log structured file systems, such as high |
| + | //config: cleaning overhead. |
| + | //config: |
| + | |
| + | #include "volume_id_internal.h" |
| + | |
| + | #define F2FS_MAGIC 0xF2F52010 // F2FS Magic Number |
| + | #define F2FS_UUID_SIZE 16 |
| + | #define F2FS_LABEL_SIZE 512 |
| + | #define F2FS_LABEL_BYTES 1024 |
| + | #define F2FS_SB1_OFFSET 0x400 // offset for 1:st super block |
| + | /* |
| + | #define F2FS_SB2_OFFSET 0x1400 // offset for 2:nd super block |
| + | */ |
| + | |
| + | struct f2fs_super_block { // According to version 1.1 |
| + | /* 0x00 */ uint32_t magic; // Magic Number |
| + | /* 0x04 */ uint16_t major_ver; // Major Version |
| + | /* 0x06 */ uint16_t minor_ver; // Minor Version |
| + | /* 0x08 */ uint32_t log_sectorsize; // log2 sector size in bytes |
| + | /* 0x0C */ uint32_t log_sectors_per_block; // log2 # of sectors per block |
| + | /* 0x10 */ uint32_t log_blocksize; // log2 block size in bytes |
| + | /* 0x14 */ uint32_t log_blocks_per_seg; // log2 # of blocks per segment |
| + | /* 0x18 */ uint32_t segs_per_sec; // # of segments per section |
| + | /* 0x1C */ uint32_t secs_per_zone; // # of sections per zone |
| + | /* 0x20 */ uint32_t checksum_offset; // checksum offset inside super block |
| + | /* 0x24 */ uint64_t block_count; // total # of user blocks |
| + | /* 0x2C */ uint32_t section_count; // total # of sections |
| + | /* 0x30 */ uint32_t segment_count; // total # of segments |
| + | /* 0x34 */ uint32_t segment_count_ckpt; // # of segments for checkpoint |
| + | /* 0x38 */ uint32_t segment_count_sit; // # of segments for SIT |
| + | /* 0x3C */ uint32_t segment_count_nat; // # of segments for NAT |
| + | /* 0x40 */ uint32_t segment_count_ssa; // # of segments for SSA |
| + | /* 0x44 */ uint32_t segment_count_main; // # of segments for main area |
| + | /* 0x48 */ uint32_t segment0_blkaddr; // start block address of segment 0 |
| + | /* 0x4C */ uint32_t cp_blkaddr; // start block address of checkpoint |
| + | /* 0x50 */ uint32_t sit_blkaddr; // start block address of SIT |
| + | /* 0x54 */ uint32_t nat_blkaddr; // start block address of NAT |
| + | /* 0x58 */ uint32_t ssa_blkaddr; // start block address of SSA |
| + | /* 0x5C */ uint32_t main_blkaddr; // start block address of main area |
| + | /* 0x60 */ uint32_t root_ino; // root inode number |
| + | /* 0x64 */ uint32_t node_ino; // node inode number |
| + | /* 0x68 */ uint32_t meta_ino; // meta inode number |
| + | /* 0x6C */ uint8_t uuid[F2FS_UUID_SIZE]; // 128-bit uuid for volume |
| + | /* 0x7C */ uint16_t volume_name[F2FS_LABEL_SIZE]; // volume name |
| + | // /* 0x47C */ uint32_t extension_count; // # of extensions below |
| + | // /* 0x480 */ uint8_t extension_list[64][8]; // extension array |
| + | } PACKED; |
| + | |
| + | |
| + | int FAST_FUNC volume_id_probe_f2fs(struct volume_id *id /*,uint64_t off*/) |
| + | { |
| + | struct f2fs_super_block *sb; |
| + | |
| + | // Go for primary super block (ignore second sb) |
| + | dbg("f2fs: probing at offset 0x%x", F2FS_SB1_OFFSET); |
| + | sb = volume_id_get_buffer(id, F2FS_SB1_OFFSET, sizeof(*sb)); |
| + | |
| + | if (!sb) |
| + | return -1; |
| + | |
| + | if (sb->magic != cpu_to_le32(F2FS_MAGIC)) |
| + | return -1; |
| + | |
| + | IF_FEATURE_BLKID_TYPE(id->type = "f2fs"); |
| + | |
| + | // For version 1.0 we don't know sb structure and can't set label/uuid |
| + | if (sb->major_ver == cpu_to_le16(1) && sb->minor_ver == cpu_to_le16(0)) |
| + | return 0; |
| + | |
| + | volume_id_set_label_unicode16(id, (uint8_t *)sb->volume_name, |
| + | LE, MIN(F2FS_LABEL_BYTES, VOLUME_ID_LABEL_SIZE)); |
| + | |
| + | volume_id_set_uuid(id, sb->uuid, UUID_DCE); |
| + | |
| + | return 0; |
| + | } |
util-linux/volume_id/volume_id.c+3 -0
| @@ -138,6 +138,9 @@ static const probe_fptr fs2[] = { | |
| #if ENABLE_FEATURE_VOLUMEID_UFS | |
| volume_id_probe_ufs, | |
| #endif | |
| + | #if ENABLE_FEATURE_VOLUMEID_F2FS |
| + | volume_id_probe_f2fs, |
| + | #endif |
| #if ENABLE_FEATURE_VOLUMEID_NILFS | |
| volume_id_probe_nilfs, | |
| #endif | |
util-linux/volume_id/volume_id_internal.h+2 -0
| @@ -195,6 +195,8 @@ 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_f2fs(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*/); | |