This patch adds support for the F2FS filesystem to fstype.
Signed-off-by: Marc Dietrich <marvin24 at gmx.de>
---
usr/kinit/fstype/f2fs_fs.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
usr/kinit/fstype/fstype.c | 14 ++++++++++++++
2 files changed, 58 insertions(+)
create mode 100644 usr/kinit/fstype/f2fs_fs.h
diff --git a/usr/kinit/fstype/f2fs_fs.h b/usr/kinit/fstype/f2fs_fs.h
new file mode 100644
index 0000000..5774a9b
--- /dev/null
+++ b/usr/kinit/fstype/f2fs_fs.h
@@ -0,0 +1,44 @@
+#ifndef __F2FS_FS_H
+#define __F2FS_FS_H
+
+#define F2FS_SUPER_MAGIC 0xF2F52010 /* F2FS MAGIC */
+#define F2FS_MAX_EXTENSION 64 /* # of extension entries */
+
+/*
+ * For superblock
+ */
+struct f2fs_super_block {
+ __le32 magic; /* Magic Number */
+ __le16 major_ver; /* Major Version */
+ __le16 minor_ver; /* Minor Version */
+ __le32 log_sectorsize; /* log2 sector size in bytes */
+ __le32 log_sectors_per_block; /* log2 # of sectors per block */
+ __le32 log_blocksize; /* log2 block size in bytes */
+ __le32 log_blocks_per_seg; /* log2 # of blocks per segment */
+ __le32 segs_per_sec; /* # of segments per section */
+ __le32 secs_per_zone; /* # of sections per zone */
+ __le32 checksum_offset; /* checksum offset inside super block */
+ __le64 block_count; /* total # of user blocks */
+ __le32 section_count; /* total # of sections */
+ __le32 segment_count; /* total # of segments */
+ __le32 segment_count_ckpt; /* # of segments for checkpoint */
+ __le32 segment_count_sit; /* # of segments for SIT */
+ __le32 segment_count_nat; /* # of segments for NAT */
+ __le32 segment_count_ssa; /* # of segments for SSA */
+ __le32 segment_count_main; /* # of segments for main area */
+ __le32 segment0_blkaddr; /* start block address of segment 0 */
+ __le32 cp_blkaddr; /* start block address of checkpoint */
+ __le32 sit_blkaddr; /* start block address of SIT */
+ __le32 nat_blkaddr; /* start block address of NAT */
+ __le32 ssa_blkaddr; /* start block address of SSA */
+ __le32 main_blkaddr; /* start block address of main area */
+ __le32 root_ino; /* root inode number */
+ __le32 node_ino; /* node inode number */
+ __le32 meta_ino; /* meta inode number */
+ __u8 uuid[16]; /* 128-bit uuid for volume */
+ __le16 volume_name[512]; /* volume name */
+ __le32 extension_count; /* # of extensions below */
+ __u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */
+} __packed;
+
+#endif /* F2FS_FS_H */
diff --git a/usr/kinit/fstype/fstype.c b/usr/kinit/fstype/fstype.c
index c5a1432..34d633a 100644
--- a/usr/kinit/fstype/fstype.c
+++ b/usr/kinit/fstype/fstype.c
@@ -37,6 +37,7 @@
#include "romfs_fs.h"
#include "squashfs_fs.h"
#include "xfs_sb.h"
+#include "f2fs_fs.h"
/*
* Slightly cleaned up version of jfs_superblock to
@@ -472,6 +473,18 @@ static int btrfs_image(const void *buf, unsigned long long
*bytes)
return 0;
}
+static int f2fs_image(const void *buf, unsigned long long *bytes)
+{
+ const struct f2fs_super_block *sb + (const struct f2fs_super_block *)buf;
+
+ if (sb->magic == __cpu_to_le32(F2FS_SUPER_MAGIC)) {
+ *bytes = 0;
+ return 1;
+ }
+ return 0;
+}
+
struct imagetype {
off_t block;
const char name[12];
@@ -502,6 +515,7 @@ static struct imagetype images[] = {
{1, "ext2", ext2_image},
{1, "minix", minix_image},
{1, "nilfs2", nilfs2_image},
+ {1, "f2fs", f2fs_image},
{2, "ocfs2", ocfs2_image},
{8, "reiserfs", reiserfs_image},
{64, "reiserfs", reiserfs_image},
--
1.8.5.2
