From c6b61814cd4cf958e12d35a36184ff7d767e57d9 Mon Sep 17 00:00:00 2001 From: Romain Perier Date: Fri, 20 Mar 2020 17:43:16 +0100 Subject: [PATCH 09/12] Add support for the F2FS filesystem This adds a basic support for the Flash-Friendly File System. So we can manipulate the file system by using the PedFileSystem API and we can do basic device probing for autodetecting the current fs. Signed-off-by: Romain Perier Signed-off-by: Brian C. Lane --- libparted/fs/Makefile.am | 2 ++ libparted/fs/f2fs/f2fs.c | 60 ++++++++++++++++++++++++++++++++++++++++ libparted/fs/f2fs/f2fs.h | 57 ++++++++++++++++++++++++++++++++++++++ libparted/libparted.c | 4 +++ 4 files changed, 123 insertions(+) create mode 100644 libparted/fs/f2fs/f2fs.c create mode 100644 libparted/fs/f2fs/f2fs.h diff --git a/libparted/fs/Makefile.am b/libparted/fs/Makefile.am index 74f275a..e40eee8 100644 --- a/libparted/fs/Makefile.am +++ b/libparted/fs/Makefile.am @@ -32,6 +32,8 @@ libfs_la_SOURCES = \ fat/count.h \ fat/fat.c \ fat/fat.h \ + f2fs/f2fs.c \ + f2fs/f2fs.h \ hfs/hfs.c \ hfs/hfs.h \ hfs/probe.c \ diff --git a/libparted/fs/f2fs/f2fs.c b/libparted/fs/f2fs/f2fs.c new file mode 100644 index 0000000..64883e9 --- /dev/null +++ b/libparted/fs/f2fs/f2fs.c @@ -0,0 +1,60 @@ +/* + libparted/fs/f2fs - Flash-Friendly File System + Copyright (C) 2020 Free Software Foundation, Inc. + + 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 3 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 . +*/ + +#include + +#include +#include + +#include "f2fs.h" + +static PedGeometry* +f2fs_probe (PedGeometry* geom) +{ + struct f2fs_super_block *sb = alloca(geom->dev->sector_size); + + if (!ped_geometry_read (geom, sb, F2FS_SB_OFFSET, 1)) + return NULL; + + if (PED_LE32_TO_CPU(sb->magic) == F2FS_MAGIC) + return ped_geometry_new (geom->dev, geom->start, geom->length); + + return NULL; +} + +static PedFileSystemOps f2fs_ops = { + probe: f2fs_probe, +}; + +static PedFileSystemType f2fs_type = { + next: NULL, + ops: &f2fs_ops, + name: "f2fs", +}; + +void +ped_file_system_f2fs_init () +{ + ped_file_system_type_register (&f2fs_type); +} + +void +ped_file_system_f2fs_done () +{ + ped_file_system_type_unregister (&f2fs_type); +} diff --git a/libparted/fs/f2fs/f2fs.h b/libparted/fs/f2fs/f2fs.h new file mode 100644 index 0000000..c96b88f --- /dev/null +++ b/libparted/fs/f2fs/f2fs.h @@ -0,0 +1,57 @@ +/* + libparted/fs/f2fs - Flash-Friendly File System + Copyright (C) 2020 Free Software Foundation, Inc. + + 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 3 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 . +*/ +#ifndef _F2FS_H +#define _F2FS_H + +#define F2FS_MAGIC 0xF2F52010 +#define F2FS_MAX_VOLUME_NAME 512 +#define F2FS_SB_OFFSET 0x02 + +struct f2fs_super_block { + uint32_t magic; /* Magic Number */ + uint16_t major_ver; /* Major Version */ + uint16_t minor_ver; /* Minor Version */ + uint32_t log_sectorsize; /* log2 sector size in bytes */ + uint32_t log_sectors_per_block; /* log2 # of sectors per block */ + uint32_t log_blocksize; /* log2 block size in bytes */ + uint32_t log_blocks_per_seg; /* log2 # of blocks per segment */ + uint32_t segs_per_sec; /* # of segments per section */ + uint32_t secs_per_zone; /* # of sections per zone */ + uint32_t checksum_offset; /* checksum offset inside super block */ + uint64_t block_count; /* total # of user blocks */ + uint32_t section_count; /* total # of sections */ + uint32_t segment_count; /* total # of segments */ + uint32_t segment_count_ckpt; /* # of segments for checkpoint */ + uint32_t segment_count_sit; /* # of segments for SIT */ + uint32_t segment_count_nat; /* # of segments for NAT */ + uint32_t segment_count_ssa; /* # of segments for SSA */ + uint32_t segment_count_main; /* # of segments for main area */ + uint32_t segment0_blkaddr; /* start block address of segment 0 */ + uint32_t cp_blkaddr; /* start block address of checkpoint */ + uint32_t sit_blkaddr; /* start block address of SIT */ + uint32_t nat_blkaddr; /* start block address of NAT */ + uint32_t ssa_blkaddr; /* start block address of SSA */ + uint32_t main_blkaddr; /* start block address of main area */ + uint32_t root_ino; /* root inode number */ + uint32_t node_ino; /* node inode number */ + uint32_t meta_ino; /* meta inode number */ + uint8_t uuid[16]; /* 128-bit uuid for volume */ + uint16_t volume_name[F2FS_MAX_VOLUME_NAME]; /* volume name */ +} __attribute__((packed)); + +#endif diff --git a/libparted/libparted.c b/libparted/libparted.c index 00f5ff8..4a57a80 100644 --- a/libparted/libparted.c +++ b/libparted/libparted.c @@ -109,6 +109,7 @@ extern void ped_file_system_linux_swap_init (void); extern void ped_file_system_jfs_init (void); extern void ped_file_system_hfs_init (void); extern void ped_file_system_fat_init (void); +extern void ped_file_system_f2fs_init (void); extern void ped_file_system_ext2_init (void); extern void ped_file_system_nilfs2_init (void); extern void ped_file_system_btrfs_init (void); @@ -126,6 +127,7 @@ init_file_system_types () ped_file_system_jfs_init (); ped_file_system_hfs_init (); ped_file_system_fat_init (); + ped_file_system_f2fs_init (); ped_file_system_ext2_init (); ped_file_system_nilfs2_init (); ped_file_system_btrfs_init (); @@ -186,6 +188,7 @@ _init() extern void ped_file_system_nilfs2_done (void); extern void ped_file_system_ext2_done (void); extern void ped_file_system_fat_done (void); +extern void ped_file_system_f2fs_done (void); extern void ped_file_system_hfs_done (void); extern void ped_file_system_jfs_done (void); extern void ped_file_system_linux_swap_done (void); @@ -202,6 +205,7 @@ done_file_system_types () { ped_file_system_nilfs2_done (); ped_file_system_ext2_done (); + ped_file_system_f2fs_done (); ped_file_system_fat_done (); ped_file_system_hfs_done (); ped_file_system_jfs_done (); -- 2.26.2