[parted-devel] [PATCH v2 1/2] Add support for the F2FS filesystem
Romain Perier
romain.perier at gmail.com
Fri Mar 20 16:43:16 GMT 2020
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 <romain.perier at gmail.com>
---
libparted/fs/Makefile.am | 1 +
libparted/fs/f2fs/f2fs.c | 94 ++++++++++++++++++++++++++++++++++++++++
libparted/libparted.c | 4 ++
3 files changed, 99 insertions(+)
create mode 100644 libparted/fs/f2fs/f2fs.c
diff --git a/libparted/fs/Makefile.am b/libparted/fs/Makefile.am
index 74f275a..7ffd0a0 100644
--- a/libparted/fs/Makefile.am
+++ b/libparted/fs/Makefile.am
@@ -32,6 +32,7 @@ libfs_la_SOURCES = \
fat/count.h \
fat/fat.c \
fat/fat.h \
+ f2fs/f2fs.c \
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..a69df2a
--- /dev/null
+++ b/libparted/fs/f2fs/f2fs.c
@@ -0,0 +1,94 @@
+/*
+ libparted - a library for manipulating disk partitions
+ Copyright (C) 2013-2014, 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 <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#include <parted/parted.h>
+#include <parted/endian.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));
+
+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/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 ();
--
2.20.1
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