fsck.f2fs: large volume support

This patch support large volume over about 3TB.

Signed-off-by: Changman Lee <cm224.lee@samsung.com>
[Jaegeuk Kim: add missing cp_payload in f2fs_super_block]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fsck/f2fs.h

@@ -203,9 +203,17 @@ static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
 {
 	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
-	int offset = (flag == NAT_BITMAP) ?
+	int offset;
+	if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
+		if (flag == NAT_BITMAP)
+			return &ckpt->sit_nat_version_bitmap;
+		else
+			return ((char *)ckpt + F2FS_BLKSIZE);
+	} else {
+		offset = (flag == NAT_BITMAP) ?
 			le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
 		return &ckpt->sit_nat_version_bitmap + offset;
+	}
 }
 
 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)

fsck/fsck.c

@@ -644,11 +644,14 @@ int fsck_chk_orphan_node(struct f2fs_sb_info *sbi)
 
 	block_t start_blk, orphan_blkaddr, i, j;
 	struct f2fs_orphan_block *orphan_blk;
+	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
 
-	if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG))
+	if (!is_set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG))
 		return 0;
 
-	start_blk = __start_cp_addr(sbi) + 1;
+	start_blk = __start_cp_addr(sbi) + 1 +
+		le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
+
 	orphan_blkaddr = __start_sum_addr(sbi) - 1;
 
 	orphan_blk = calloc(BLOCK_SZ, 1);

fsck/mount.c

@@ -129,6 +129,7 @@ void print_raw_sb_info(struct f2fs_sb_info *sbi)
 	DISP_u32(sb, root_ino);
 	DISP_u32(sb, node_ino);
 	DISP_u32(sb, meta_ino);
+	DISP_u32(sb, cp_payload);
 	printf("\n");
 }
 
@@ -285,6 +286,7 @@ void *validate_checkpoint(struct f2fs_sb_info *sbi, block_t cp_addr, unsigned lo
 	/* Read the 2nd cp block in this CP pack */
 	cp_page_2 = malloc(PAGE_SIZE);
 	cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
+
 	if (dev_read_block(cp_page_2, cp_addr) < 0)
 		goto invalid_cp2;
 
@@ -295,7 +297,7 @@ void *validate_checkpoint(struct f2fs_sb_info *sbi, block_t cp_addr, unsigned lo
 
 	crc = *(unsigned int *)((unsigned char *)cp_block + crc_offset);
 	if (f2fs_crc_valid(crc, cp_block, crc_offset))
-		goto invalid_cp1;
+		goto invalid_cp2;
 
 	cur_version = le64_to_cpu(cp_block->checkpoint_ver);
 
@@ -319,8 +321,9 @@ int get_valid_checkpoint(struct f2fs_sb_info *sbi)
 	unsigned long blk_size = sbi->blocksize;
 	unsigned long long cp1_version = 0, cp2_version = 0;
 	unsigned long long cp_start_blk_no;
+	unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
 
-	sbi->ckpt = malloc(blk_size);
+	sbi->ckpt = malloc(cp_blks * blk_size);
 	if (!sbi->ckpt)
 		return -ENOMEM;
 	/*
@@ -351,6 +354,20 @@ int get_valid_checkpoint(struct f2fs_sb_info *sbi)
 
 	memcpy(sbi->ckpt, cur_page, blk_size);
 
+	if (cp_blks > 1) {
+		int i;
+		unsigned long long cp_blk_no;
+
+		cp_blk_no = le32_to_cpu(raw_sb->cp_blkaddr);
+		if (cur_page == cp2)
+			cp_blk_no += 1 << le32_to_cpu(raw_sb->log_blocks_per_seg);
+		/* copy sit bitmap */
+		for (i = 1; i < cp_blks; i++) {
+			unsigned char *ckpt = (unsigned char *)sbi->ckpt;
+			dev_read_block(cur_page, cp_blk_no + i);
+			memcpy(ckpt + i * blk_size, cur_page, blk_size);
+		}
+	}
 	free(cp1);
 	free(cp2);
 	return 0;
@@ -697,6 +714,7 @@ void check_block_count(struct f2fs_sb_info *sbi,
 	int valid_blocks = 0;
 	unsigned int i;
 
+
 	/* check segment usage */
 	ASSERT(GET_SIT_VBLOCKS(raw_sit) <= sbi->blocks_per_seg);
 

include/f2fs_fs.h

@@ -277,6 +277,7 @@ struct f2fs_super_block {
 	__le16 volume_name[512];	/* volume name */
 	__le32 extension_count;		/* # of extensions below */
 	__u8 extension_list[F2FS_MAX_EXTENSION][8];	/* extension array */
+	__le32 cp_payload;
 } __attribute__((packed));
 
 /*

lib/libf2fs.c

@@ -341,8 +341,8 @@ int f2fs_crc_valid(u_int32_t blk_crc, void *buf, int len)
 	cal_crc = f2fs_cal_crc32(F2FS_SUPER_MAGIC, buf, len);
 
 	if (cal_crc != blk_crc)	{
-		DBG(0,"CRC validation failed: cal_crc = %u \
+		DBG(0,"CRC validation failed: cal_crc = %u, "
-			blk_crc = %u buff_size = 0x%x",
+			"blk_crc = %u buff_size = 0x%x\n",
 			cal_crc, blk_crc, len);
 		return -1;
 	}