/** * f2fs_format.c * * Copyright (c) 2012 Samsung Electronics Co., Ltd. * http://www.samsung.com/ * * Dual licensed under the GPL or LGPL version 2 licenses. */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #ifndef ANDROID_WINDOWS_HOST #include #include #endif #include #include #include "f2fs_fs.h" #include "quota.h" #include "f2fs_format_utils.h" extern struct f2fs_configuration c; struct f2fs_super_block raw_sb; struct f2fs_super_block *sb = &raw_sb; struct f2fs_checkpoint *cp; /* Return first segment number of each area */ #define prev_zone(cur) (c.cur_seg[cur] - c.segs_per_zone) #define next_zone(cur) (c.cur_seg[cur] + c.segs_per_zone) #define last_zone(cur) ((cur - 1) * c.segs_per_zone) #define last_section(cur) (cur + (c.secs_per_zone - 1) * c.segs_per_sec) static unsigned int quotatype_bits = 0; const char *media_ext_lists[] = { "jpg", "gif", "png", "avi", "divx", "m4a", "m4v", "m4p", "mp4", "mp3", "3gp", "wmv", "wma", "mpeg", "mkv", "mov", "asx", "asf", "wmx", "svi", "wvx", "wv", "wm", "mpg", "mpe", "rm", "ogg", "opus", "flac", "jpeg", "video", "apk", /* for android system */ "so", /* for android system */ "exe", NULL }; const char *hot_ext_lists[] = { "db", NULL }; const char **default_ext_list[] = { media_ext_lists, hot_ext_lists }; static bool is_extension_exist(const char *name) { int i; for (i = 0; i < F2FS_MAX_EXTENSION; i++) { char *ext = (char *)sb->extension_list[i]; if (!strcmp(ext, name)) return 1; } return 0; } static void cure_extension_list(void) { const char **extlist; char *ext_str; char *ue; int name_len; int i, pos = 0; set_sb(extension_count, 0); memset(sb->extension_list, 0, sizeof(sb->extension_list)); for (i = 0; i < 2; i++) { ext_str = c.extension_list[i]; extlist = default_ext_list[i]; while (*extlist) { name_len = strlen(*extlist); memcpy(sb->extension_list[pos++], *extlist, name_len); extlist++; } if (i == 0) set_sb(extension_count, pos); else sb->hot_ext_count = pos - get_sb(extension_count);; if (!ext_str) continue; /* add user ext list */ ue = strtok(ext_str, ", "); while (ue != NULL) { name_len = strlen(ue); if (name_len >= 8) { MSG(0, "\tWarn: Extension name (%s) is too long\n", ue); goto next; } if (!is_extension_exist(ue)) memcpy(sb->extension_list[pos++], ue, name_len); next: ue = strtok(NULL, ", "); if (pos >= F2FS_MAX_EXTENSION) break; } if (i == 0) set_sb(extension_count, pos); else sb->hot_ext_count = pos - get_sb(extension_count); free(c.extension_list[i]); } } static void verify_cur_segs(void) { int i, j; int reorder = 0; for (i = 0; i < NR_CURSEG_TYPE; i++) { for (j = i + 1; j < NR_CURSEG_TYPE; j++) { if (c.cur_seg[i] == c.cur_seg[j]) { reorder = 1; break; } } } if (!reorder) return; c.cur_seg[0] = 0; for (i = 1; i < NR_CURSEG_TYPE; i++) c.cur_seg[i] = next_zone(i - 1); } static int f2fs_prepare_super_block(void) { u_int32_t blk_size_bytes; u_int32_t log_sectorsize, log_sectors_per_block; u_int32_t log_blocksize, log_blks_per_seg; u_int32_t segment_size_bytes, zone_size_bytes; u_int32_t sit_segments, nat_segments; u_int32_t blocks_for_sit, blocks_for_nat, blocks_for_ssa; u_int32_t total_valid_blks_available; u_int64_t zone_align_start_offset, diff; u_int64_t total_meta_zones, total_meta_segments; u_int32_t sit_bitmap_size, max_sit_bitmap_size; u_int32_t max_nat_bitmap_size, max_nat_segments; u_int32_t total_zones; enum quota_type qtype; int i; set_sb(magic, F2FS_SUPER_MAGIC); set_sb(major_ver, F2FS_MAJOR_VERSION); set_sb(minor_ver, F2FS_MINOR_VERSION); log_sectorsize = log_base_2(c.sector_size); log_sectors_per_block = log_base_2(c.sectors_per_blk); log_blocksize = log_sectorsize + log_sectors_per_block; log_blks_per_seg = log_base_2(c.blks_per_seg); set_sb(log_sectorsize, log_sectorsize); set_sb(log_sectors_per_block, log_sectors_per_block); set_sb(log_blocksize, log_blocksize); set_sb(log_blocks_per_seg, log_blks_per_seg); set_sb(segs_per_sec, c.segs_per_sec); set_sb(secs_per_zone, c.secs_per_zone); blk_size_bytes = 1 << log_blocksize; segment_size_bytes = blk_size_bytes * c.blks_per_seg; zone_size_bytes = blk_size_bytes * c.secs_per_zone * c.segs_per_sec * c.blks_per_seg; set_sb(checksum_offset, 0); set_sb(block_count, c.total_sectors >> log_sectors_per_block); zone_align_start_offset = ((u_int64_t) c.start_sector * DEFAULT_SECTOR_SIZE + 2 * F2FS_BLKSIZE + zone_size_bytes - 1) / zone_size_bytes * zone_size_bytes - (u_int64_t) c.start_sector * DEFAULT_SECTOR_SIZE; if (c.start_sector % DEFAULT_SECTORS_PER_BLOCK) { MSG(1, "\t%s: Align start sector number to the page unit\n", c.zoned_mode ? "FAIL" : "WARN"); MSG(1, "\ti.e., start sector: %d, ofs:%d (sects/page: %d)\n", c.start_sector, c.start_sector % DEFAULT_SECTORS_PER_BLOCK, DEFAULT_SECTORS_PER_BLOCK); if (c.zoned_mode) return -1; } set_sb(segment0_blkaddr, zone_align_start_offset / blk_size_bytes); sb->cp_blkaddr = sb->segment0_blkaddr; MSG(0, "Info: zone aligned segment0 blkaddr: %u\n", get_sb(segment0_blkaddr)); if (c.zoned_mode && (get_sb(segment0_blkaddr) + c.start_sector / DEFAULT_SECTORS_PER_BLOCK) % c.zone_blocks) { MSG(1, "\tError: Unaligned segment0 block address %u\n", get_sb(segment0_blkaddr)); return -1; } for (i = 0; i < c.ndevs; i++) { if (i == 0) { c.devices[i].total_segments = (c.devices[i].total_sectors * c.sector_size - zone_align_start_offset) / segment_size_bytes; c.devices[i].start_blkaddr = 0; c.devices[i].end_blkaddr = c.devices[i].total_segments * c.blks_per_seg - 1 + sb->segment0_blkaddr; } else { c.devices[i].total_segments = c.devices[i].total_sectors / (c.sectors_per_blk * c.blks_per_seg); c.devices[i].start_blkaddr = c.devices[i - 1].end_blkaddr + 1; c.devices[i].end_blkaddr = c.devices[i].start_blkaddr + c.devices[i].total_segments * c.blks_per_seg - 1; } if (c.ndevs > 1) { memcpy(sb->devs[i].path, c.devices[i].path, MAX_PATH_LEN); sb->devs[i].total_segments = cpu_to_le32(c.devices[i].total_segments); } c.total_segments += c.devices[i].total_segments; } set_sb(segment_count, (c.total_segments / c.segs_per_zone * c.segs_per_zone)); set_sb(segment_count_ckpt, F2FS_NUMBER_OF_CHECKPOINT_PACK); set_sb(sit_blkaddr, get_sb(segment0_blkaddr) + get_sb(segment_count_ckpt) * c.blks_per_seg); blocks_for_sit = SIZE_ALIGN(get_sb(segment_count), SIT_ENTRY_PER_BLOCK); sit_segments = SEG_ALIGN(blocks_for_sit); set_sb(segment_count_sit, sit_segments * 2); set_sb(nat_blkaddr, get_sb(sit_blkaddr) + get_sb(segment_count_sit) * c.blks_per_seg); total_valid_blks_available = (get_sb(segment_count) - (get_sb(segment_count_ckpt) + get_sb(segment_count_sit))) * c.blks_per_seg; blocks_for_nat = SIZE_ALIGN(total_valid_blks_available, NAT_ENTRY_PER_BLOCK); if (c.large_nat_bitmap) { nat_segments = SEG_ALIGN(blocks_for_nat) * DEFAULT_NAT_ENTRY_RATIO / 100; set_sb(segment_count_nat, nat_segments ? nat_segments : 1); max_nat_bitmap_size = (get_sb(segment_count_nat) << log_blks_per_seg) / 8; set_sb(segment_count_nat, get_sb(segment_count_nat) * 2); } else { set_sb(segment_count_nat, SEG_ALIGN(blocks_for_nat)); max_nat_bitmap_size = 0; } /* * The number of node segments should not be exceeded a "Threshold". * This number resizes NAT bitmap area in a CP page. * So the threshold is determined not to overflow one CP page */ sit_bitmap_size = ((get_sb(segment_count_sit) / 2) << log_blks_per_seg) / 8; if (sit_bitmap_size > MAX_SIT_BITMAP_SIZE) max_sit_bitmap_size = MAX_SIT_BITMAP_SIZE; else max_sit_bitmap_size = sit_bitmap_size; if (c.large_nat_bitmap) { /* use cp_payload if free space of f2fs_checkpoint is not enough */ if (max_sit_bitmap_size + max_nat_bitmap_size > MAX_BITMAP_SIZE_IN_CKPT) { u_int32_t diff = max_sit_bitmap_size + max_nat_bitmap_size - MAX_BITMAP_SIZE_IN_CKPT; set_sb(cp_payload, F2FS_BLK_ALIGN(diff)); } else { set_sb(cp_payload, 0); } } else { /* * It should be reserved minimum 1 segment for nat. * When sit is too large, we should expand cp area. * It requires more pages for cp. */ if (max_sit_bitmap_size > MAX_SIT_BITMAP_SIZE_IN_CKPT) { max_nat_bitmap_size = MAX_BITMAP_SIZE_IN_CKPT; set_sb(cp_payload, F2FS_BLK_ALIGN(max_sit_bitmap_size)); } else { max_nat_bitmap_size = MAX_BITMAP_SIZE_IN_CKPT - max_sit_bitmap_size; set_sb(cp_payload, 0); } max_nat_segments = (max_nat_bitmap_size * 8) >> log_blks_per_seg; if (get_sb(segment_count_nat) > max_nat_segments) set_sb(segment_count_nat, max_nat_segments); set_sb(segment_count_nat, get_sb(segment_count_nat) * 2); } set_sb(ssa_blkaddr, get_sb(nat_blkaddr) + get_sb(segment_count_nat) * c.blks_per_seg); total_valid_blks_available = (get_sb(segment_count) - (get_sb(segment_count_ckpt) + get_sb(segment_count_sit) + get_sb(segment_count_nat))) * c.blks_per_seg; blocks_for_ssa = total_valid_blks_available / c.blks_per_seg + 1; set_sb(segment_count_ssa, SEG_ALIGN(blocks_for_ssa)); total_meta_segments = get_sb(segment_count_ckpt) + get_sb(segment_count_sit) + get_sb(segment_count_nat) + get_sb(segment_count_ssa); diff = total_meta_segments % (c.segs_per_zone); if (diff) set_sb(segment_count_ssa, get_sb(segment_count_ssa) + (c.segs_per_zone - diff)); total_meta_zones = ZONE_ALIGN(total_meta_segments * c.blks_per_seg); set_sb(main_blkaddr, get_sb(segment0_blkaddr) + total_meta_zones * c.segs_per_zone * c.blks_per_seg); if (c.zoned_mode) { /* * Make sure there is enough randomly writeable * space at the beginning of the disk. */ unsigned long main_blkzone = get_sb(main_blkaddr) / c.zone_blocks; if (c.devices[0].zoned_model == F2FS_ZONED_HM && c.devices[0].nr_rnd_zones < main_blkzone) { MSG(0, "\tError: Device does not have enough random " "write zones for F2FS volume (%lu needed)\n", main_blkzone); return -1; } } total_zones = get_sb(segment_count) / (c.segs_per_zone) - total_meta_zones; set_sb(section_count, total_zones * c.secs_per_zone); set_sb(segment_count_main, get_sb(section_count) * c.segs_per_sec); /* Let's determine the best reserved and overprovisioned space */ if (c.overprovision == 0) c.overprovision = get_best_overprovision(sb); c.reserved_segments = (2 * (100 / c.overprovision + 1) + NR_CURSEG_TYPE) * c.segs_per_sec; if (c.overprovision == 0 || c.total_segments < F2FS_MIN_SEGMENTS || (c.devices[0].total_sectors * c.sector_size < zone_align_start_offset) || (get_sb(segment_count_main) - NR_CURSEG_TYPE) < c.reserved_segments) { MSG(0, "\tError: Device size is not sufficient for F2FS volume\n"); return -1; } uuid_generate(sb->uuid); /* precompute checksum seed for metadata */ if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM)) c.chksum_seed = f2fs_cal_crc32(~0, sb->uuid, sizeof(sb->uuid)); utf8_to_utf16(sb->volume_name, (const char *)c.vol_label, MAX_VOLUME_NAME, strlen(c.vol_label)); set_sb(node_ino, 1); set_sb(meta_ino, 2); set_sb(root_ino, 3); c.next_free_nid = 4; if (c.feature & cpu_to_le32(F2FS_FEATURE_QUOTA_INO)) { quotatype_bits = QUOTA_USR_BIT | QUOTA_GRP_BIT; if (c.feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) quotatype_bits |= QUOTA_PRJ_BIT; } for (qtype = 0; qtype < F2FS_MAX_QUOTAS; qtype++) { if (!((1 << qtype) & quotatype_bits)) continue; sb->qf_ino[qtype] = cpu_to_le32(c.next_free_nid++); MSG(0, "Info: add quota type = %u => %u\n", qtype, c.next_free_nid - 1); } if (c.feature & cpu_to_le32(F2FS_FEATURE_LOST_FOUND)) c.lpf_ino = c.next_free_nid++; if (total_zones <= 6) { MSG(1, "\tError: %d zones: Need more zones " "by shrinking zone size\n", total_zones); return -1; } if (c.heap) { c.cur_seg[CURSEG_HOT_NODE] = last_section(last_zone(total_zones)); c.cur_seg[CURSEG_WARM_NODE] = prev_zone(CURSEG_HOT_NODE); c.cur_seg[CURSEG_COLD_NODE] = prev_zone(CURSEG_WARM_NODE); c.cur_seg[CURSEG_HOT_DATA] = prev_zone(CURSEG_COLD_NODE); c.cur_seg[CURSEG_COLD_DATA] = 0; c.cur_seg[CURSEG_WARM_DATA] = next_zone(CURSEG_COLD_DATA); } else { c.cur_seg[CURSEG_HOT_NODE] = 0; c.cur_seg[CURSEG_WARM_NODE] = next_zone(CURSEG_HOT_NODE); c.cur_seg[CURSEG_COLD_NODE] = next_zone(CURSEG_WARM_NODE); c.cur_seg[CURSEG_HOT_DATA] = next_zone(CURSEG_COLD_NODE); c.cur_seg[CURSEG_COLD_DATA] = max(last_zone((total_zones >> 2)), next_zone(CURSEG_HOT_DATA)); c.cur_seg[CURSEG_WARM_DATA] = max(last_zone((total_zones >> 1)), next_zone(CURSEG_COLD_DATA)); } /* if there is redundancy, reassign it */ verify_cur_segs(); cure_extension_list(); /* get kernel version */ if (c.kd >= 0) { dev_read_version(c.version, 0, VERSION_LEN); get_kernel_version(c.version); MSG(0, "Info: format version with\n \"%s\"\n", c.version); } else { get_kernel_uname_version(c.version); } memcpy(sb->version, c.version, VERSION_LEN); memcpy(sb->init_version, c.version, VERSION_LEN); sb->feature = c.feature; if (get_sb(feature) & F2FS_FEATURE_SB_CHKSUM) { set_sb(checksum_offset, SB_CHKSUM_OFFSET); set_sb(crc, f2fs_cal_crc32(F2FS_SUPER_MAGIC, sb, SB_CHKSUM_OFFSET)); MSG(1, "Info: SB CRC is set: offset (%d), crc (0x%x)\n", get_sb(checksum_offset), get_sb(crc)); } return 0; } static int f2fs_init_sit_area(void) { u_int32_t blk_size, seg_size; u_int32_t index = 0; u_int64_t sit_seg_addr = 0; u_int8_t *zero_buf = NULL; blk_size = 1 << get_sb(log_blocksize); seg_size = (1 << get_sb(log_blocks_per_seg)) * blk_size; zero_buf = calloc(sizeof(u_int8_t), seg_size); if(zero_buf == NULL) { MSG(1, "\tError: Calloc Failed for sit_zero_buf!!!\n"); return -1; } sit_seg_addr = get_sb(sit_blkaddr); sit_seg_addr *= blk_size; DBG(1, "\tFilling sit area at offset 0x%08"PRIx64"\n", sit_seg_addr); for (index = 0; index < (get_sb(segment_count_sit) / 2); index++) { if (dev_fill(zero_buf, sit_seg_addr, seg_size)) { MSG(1, "\tError: While zeroing out the sit area " "on disk!!!\n"); free(zero_buf); return -1; } sit_seg_addr += seg_size; } free(zero_buf); return 0 ; } static int f2fs_init_nat_area(void) { u_int32_t blk_size, seg_size; u_int32_t index = 0; u_int64_t nat_seg_addr = 0; u_int8_t *nat_buf = NULL; blk_size = 1 << get_sb(log_blocksize); seg_size = (1 << get_sb(log_blocks_per_seg)) * blk_size; nat_buf = calloc(sizeof(u_int8_t), seg_size); if (nat_buf == NULL) { MSG(1, "\tError: Calloc Failed for nat_zero_blk!!!\n"); return -1; } nat_seg_addr = get_sb(nat_blkaddr); nat_seg_addr *= blk_size; DBG(1, "\tFilling nat area at offset 0x%08"PRIx64"\n", nat_seg_addr); for (index = 0; index < get_sb(segment_count_nat) / 2; index++) { if (dev_fill(nat_buf, nat_seg_addr, seg_size)) { MSG(1, "\tError: While zeroing out the nat area " "on disk!!!\n"); free(nat_buf); return -1; } nat_seg_addr = nat_seg_addr + (2 * seg_size); } free(nat_buf); return 0 ; } static int f2fs_write_check_point_pack(void) { struct f2fs_summary_block *sum = NULL; struct f2fs_journal *journal; u_int32_t blk_size_bytes; u_int32_t nat_bits_bytes, nat_bits_blocks; unsigned char *nat_bits = NULL, *empty_nat_bits; u_int64_t cp_seg_blk = 0; u_int32_t crc = 0, flags; unsigned int i; char *cp_payload = NULL; char *sum_compact, *sum_compact_p; struct f2fs_summary *sum_entry; enum quota_type qtype; int off; int ret = -1; cp = calloc(F2FS_BLKSIZE, 1); if (cp == NULL) { MSG(1, "\tError: Calloc failed for f2fs_checkpoint!!!\n"); return ret; } sum = calloc(F2FS_BLKSIZE, 1); if (sum == NULL) { MSG(1, "\tError: Calloc failed for summary_node!!!\n"); goto free_cp; } sum_compact = calloc(F2FS_BLKSIZE, 1); if (sum_compact == NULL) { MSG(1, "\tError: Calloc failed for summary buffer!!!\n"); goto free_sum; } sum_compact_p = sum_compact; nat_bits_bytes = get_sb(segment_count_nat) << 5; nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + F2FS_BLKSIZE - 1); nat_bits = calloc(F2FS_BLKSIZE, nat_bits_blocks); if (nat_bits == NULL) { MSG(1, "\tError: Calloc failed for nat bits buffer!!!\n"); goto free_sum_compact; } cp_payload = calloc(F2FS_BLKSIZE, 1); if (cp_payload == NULL) { MSG(1, "\tError: Calloc failed for cp_payload!!!\n"); goto free_nat_bits; } /* 1. cp page 1 of checkpoint pack 1 */ srand(time(NULL)); cp->checkpoint_ver = cpu_to_le64(rand() | 0x1); set_cp(cur_node_segno[0], c.cur_seg[CURSEG_HOT_NODE]); set_cp(cur_node_segno[1], c.cur_seg[CURSEG_WARM_NODE]); set_cp(cur_node_segno[2], c.cur_seg[CURSEG_COLD_NODE]); set_cp(cur_data_segno[0], c.cur_seg[CURSEG_HOT_DATA]); set_cp(cur_data_segno[1], c.cur_seg[CURSEG_WARM_DATA]); set_cp(cur_data_segno[2], c.cur_seg[CURSEG_COLD_DATA]); for (i = 3; i < MAX_ACTIVE_NODE_LOGS; i++) { set_cp(cur_node_segno[i], 0xffffffff); set_cp(cur_data_segno[i], 0xffffffff); } set_cp(cur_node_blkoff[0], 1 + c.quota_inum + c.lpf_inum); set_cp(cur_data_blkoff[0], 1 + c.quota_dnum + c.lpf_dnum); set_cp(valid_block_count, 2 + c.quota_inum + c.quota_dnum + c.lpf_inum + c.lpf_dnum); set_cp(rsvd_segment_count, c.reserved_segments); set_cp(overprov_segment_count, (get_sb(segment_count_main) - get_cp(rsvd_segment_count)) * c.overprovision / 100); set_cp(overprov_segment_count, get_cp(overprov_segment_count) + get_cp(rsvd_segment_count)); MSG(0, "Info: Overprovision ratio = %.3lf%%\n", c.overprovision); MSG(0, "Info: Overprovision segments = %u (GC reserved = %u)\n", get_cp(overprov_segment_count), c.reserved_segments); /* main segments - reserved segments - (node + data segments) */ set_cp(free_segment_count, get_sb(segment_count_main) - 6); set_cp(user_block_count, ((get_cp(free_segment_count) + 6 - get_cp(overprov_segment_count)) * c.blks_per_seg)); /* cp page (2), data summaries (1), node summaries (3) */ set_cp(cp_pack_total_block_count, 6 + get_sb(cp_payload)); flags = CP_UMOUNT_FLAG | CP_COMPACT_SUM_FLAG; if (get_cp(cp_pack_total_block_count) <= (1 << get_sb(log_blocks_per_seg)) - nat_bits_blocks) flags |= CP_NAT_BITS_FLAG; if (c.trimmed) flags |= CP_TRIMMED_FLAG; if (c.large_nat_bitmap) flags |= CP_LARGE_NAT_BITMAP_FLAG; set_cp(ckpt_flags, flags); set_cp(cp_pack_start_sum, 1 + get_sb(cp_payload)); set_cp(valid_node_count, 1 + c.quota_inum + c.lpf_inum); set_cp(valid_inode_count, 1 + c.quota_inum + c.lpf_inum); set_cp(next_free_nid, c.next_free_nid); set_cp(sit_ver_bitmap_bytesize, ((get_sb(segment_count_sit) / 2) << get_sb(log_blocks_per_seg)) / 8); set_cp(nat_ver_bitmap_bytesize, ((get_sb(segment_count_nat) / 2) << get_sb(log_blocks_per_seg)) / 8); set_cp(checksum_offset, CP_CHKSUM_OFFSET); crc = f2fs_checkpoint_chksum(cp); *((__le32 *)((unsigned char *)cp + get_cp(checksum_offset))) = cpu_to_le32(crc); blk_size_bytes = 1 << get_sb(log_blocksize); if (blk_size_bytes != F2FS_BLKSIZE) { MSG(1, "\tError: Wrong block size %d / %d!!!\n", blk_size_bytes, F2FS_BLKSIZE); goto free_cp_payload; } cp_seg_blk = get_sb(segment0_blkaddr); DBG(1, "\tWriting main segments, cp at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(cp, cp_seg_blk)) { MSG(1, "\tError: While writing the cp to disk!!!\n"); goto free_cp_payload; } for (i = 0; i < get_sb(cp_payload); i++) { cp_seg_blk++; if (dev_fill_block(cp_payload, cp_seg_blk)) { MSG(1, "\tError: While zeroing out the sit bitmap area " "on disk!!!\n"); goto free_cp_payload; } } /* Prepare and write Segment summary for HOT/WARM/COLD DATA * * The structure of compact summary * +-------------------+ * | nat_journal | * +-------------------+ * | sit_journal | * +-------------------+ * | hot data summary | * +-------------------+ * | warm data summary | * +-------------------+ * | cold data summary | * +-------------------+ */ memset(sum, 0, sizeof(struct f2fs_summary_block)); SET_SUM_TYPE((&sum->footer), SUM_TYPE_DATA); journal = &sum->journal; journal->n_nats = cpu_to_le16(1 + c.quota_inum + c.lpf_inum); journal->nat_j.entries[0].nid = sb->root_ino; journal->nat_j.entries[0].ne.version = 0; journal->nat_j.entries[0].ne.ino = sb->root_ino; journal->nat_j.entries[0].ne.block_addr = cpu_to_le32( get_sb(main_blkaddr) + get_cp(cur_node_segno[0]) * c.blks_per_seg); for (qtype = 0, i = 1; qtype < F2FS_MAX_QUOTAS; qtype++) { if (sb->qf_ino[qtype] == 0) continue; journal->nat_j.entries[i].nid = sb->qf_ino[qtype]; journal->nat_j.entries[i].ne.version = 0; journal->nat_j.entries[i].ne.ino = sb->qf_ino[qtype]; journal->nat_j.entries[i].ne.block_addr = cpu_to_le32( get_sb(main_blkaddr) + get_cp(cur_node_segno[0]) * c.blks_per_seg + i); i++; } if (c.lpf_inum) { journal->nat_j.entries[i].nid = cpu_to_le32(c.lpf_ino); journal->nat_j.entries[i].ne.version = 0; journal->nat_j.entries[i].ne.ino = cpu_to_le32(c.lpf_ino); journal->nat_j.entries[i].ne.block_addr = cpu_to_le32( get_sb(main_blkaddr) + get_cp(cur_node_segno[0]) * c.blks_per_seg + i); } memcpy(sum_compact_p, &journal->n_nats, SUM_JOURNAL_SIZE); sum_compact_p += SUM_JOURNAL_SIZE; memset(sum, 0, sizeof(struct f2fs_summary_block)); /* inode sit for root */ journal->n_sits = cpu_to_le16(6); journal->sit_j.entries[0].segno = cp->cur_node_segno[0]; journal->sit_j.entries[0].se.vblocks = cpu_to_le16((CURSEG_HOT_NODE << 10) | (1 + c.quota_inum + c.lpf_inum)); f2fs_set_bit(0, (char *)journal->sit_j.entries[0].se.valid_map); for (i = 1; i <= c.quota_inum; i++) f2fs_set_bit(i, (char *)journal->sit_j.entries[0].se.valid_map); if (c.lpf_inum) f2fs_set_bit(i, (char *)journal->sit_j.entries[0].se.valid_map); journal->sit_j.entries[1].segno = cp->cur_node_segno[1]; journal->sit_j.entries[1].se.vblocks = cpu_to_le16((CURSEG_WARM_NODE << 10)); journal->sit_j.entries[2].segno = cp->cur_node_segno[2]; journal->sit_j.entries[2].se.vblocks = cpu_to_le16((CURSEG_COLD_NODE << 10)); /* data sit for root */ journal->sit_j.entries[3].segno = cp->cur_data_segno[0]; journal->sit_j.entries[3].se.vblocks = cpu_to_le16((CURSEG_HOT_DATA << 10) | (1 + c.quota_dnum + c.lpf_dnum)); f2fs_set_bit(0, (char *)journal->sit_j.entries[3].se.valid_map); for (i = 1; i <= c.quota_dnum; i++) f2fs_set_bit(i, (char *)journal->sit_j.entries[3].se.valid_map); if (c.lpf_dnum) f2fs_set_bit(i, (char *)journal->sit_j.entries[3].se.valid_map); journal->sit_j.entries[4].segno = cp->cur_data_segno[1]; journal->sit_j.entries[4].se.vblocks = cpu_to_le16((CURSEG_WARM_DATA << 10)); journal->sit_j.entries[5].segno = cp->cur_data_segno[2]; journal->sit_j.entries[5].se.vblocks = cpu_to_le16((CURSEG_COLD_DATA << 10)); memcpy(sum_compact_p, &journal->n_sits, SUM_JOURNAL_SIZE); sum_compact_p += SUM_JOURNAL_SIZE; /* hot data summary */ sum_entry = (struct f2fs_summary *)sum_compact_p; sum_entry->nid = sb->root_ino; sum_entry->ofs_in_node = 0; off = 1; for (qtype = 0; qtype < F2FS_MAX_QUOTAS; qtype++) { if (sb->qf_ino[qtype] == 0) continue; int j; for (j = 0; j < QUOTA_DATA(qtype); j++) { (sum_entry + off + j)->nid = sb->qf_ino[qtype]; (sum_entry + off + j)->ofs_in_node = cpu_to_le16(j); } off += QUOTA_DATA(qtype); } if (c.lpf_dnum) { (sum_entry + off)->nid = cpu_to_le32(c.lpf_ino); (sum_entry + off)->ofs_in_node = 0; } /* warm data summary, nothing to do */ /* cold data summary, nothing to do */ cp_seg_blk++; DBG(1, "\tWriting Segment summary for HOT/WARM/COLD_DATA, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(sum_compact, cp_seg_blk)) { MSG(1, "\tError: While writing the sum_blk to disk!!!\n"); goto free_cp_payload; } /* Prepare and write Segment summary for HOT_NODE */ memset(sum, 0, sizeof(struct f2fs_summary_block)); SET_SUM_TYPE((&sum->footer), SUM_TYPE_NODE); sum->entries[0].nid = sb->root_ino; sum->entries[0].ofs_in_node = 0; for (qtype = i = 0; qtype < F2FS_MAX_QUOTAS; qtype++) { if (sb->qf_ino[qtype] == 0) continue; sum->entries[1 + i].nid = sb->qf_ino[qtype]; sum->entries[1 + i].ofs_in_node = 0; i++; } if (c.lpf_inum) { i++; sum->entries[i].nid = cpu_to_le32(c.lpf_ino); sum->entries[i].ofs_in_node = 0; } cp_seg_blk++; DBG(1, "\tWriting Segment summary for HOT_NODE, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(sum, cp_seg_blk)) { MSG(1, "\tError: While writing the sum_blk to disk!!!\n"); goto free_cp_payload; } /* Fill segment summary for WARM_NODE to zero. */ memset(sum, 0, sizeof(struct f2fs_summary_block)); SET_SUM_TYPE((&sum->footer), SUM_TYPE_NODE); cp_seg_blk++; DBG(1, "\tWriting Segment summary for WARM_NODE, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(sum, cp_seg_blk)) { MSG(1, "\tError: While writing the sum_blk to disk!!!\n"); goto free_cp_payload; } /* Fill segment summary for COLD_NODE to zero. */ memset(sum, 0, sizeof(struct f2fs_summary_block)); SET_SUM_TYPE((&sum->footer), SUM_TYPE_NODE); cp_seg_blk++; DBG(1, "\tWriting Segment summary for COLD_NODE, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(sum, cp_seg_blk)) { MSG(1, "\tError: While writing the sum_blk to disk!!!\n"); goto free_cp_payload; } /* cp page2 */ cp_seg_blk++; DBG(1, "\tWriting cp page2, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(cp, cp_seg_blk)) { MSG(1, "\tError: While writing the cp to disk!!!\n"); goto free_cp_payload; } /* write NAT bits, if possible */ if (flags & CP_NAT_BITS_FLAG) { uint32_t i; *(__le64 *)nat_bits = get_cp_crc(cp); empty_nat_bits = nat_bits + 8 + nat_bits_bytes; memset(empty_nat_bits, 0xff, nat_bits_bytes); test_and_clear_bit_le(0, empty_nat_bits); /* write the last blocks in cp pack */ cp_seg_blk = get_sb(segment0_blkaddr) + (1 << get_sb(log_blocks_per_seg)) - nat_bits_blocks; DBG(1, "\tWriting NAT bits pages, at offset 0x%08"PRIx64"\n", cp_seg_blk); for (i = 0; i < nat_bits_blocks; i++) { if (dev_write_block(nat_bits + i * F2FS_BLKSIZE, cp_seg_blk + i)) { MSG(1, "\tError: write NAT bits to disk!!!\n"); goto free_cp_payload; } } } /* cp page 1 of check point pack 2 * Initialize other checkpoint pack with version zero */ cp->checkpoint_ver = 0; crc = f2fs_checkpoint_chksum(cp); *((__le32 *)((unsigned char *)cp + get_cp(checksum_offset))) = cpu_to_le32(crc); cp_seg_blk = get_sb(segment0_blkaddr) + c.blks_per_seg; DBG(1, "\tWriting cp page 1 of checkpoint pack 2, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(cp, cp_seg_blk)) { MSG(1, "\tError: While writing the cp to disk!!!\n"); goto free_cp_payload; } for (i = 0; i < get_sb(cp_payload); i++) { cp_seg_blk++; if (dev_fill_block(cp_payload, cp_seg_blk)) { MSG(1, "\tError: While zeroing out the sit bitmap area " "on disk!!!\n"); goto free_cp_payload; } } /* cp page 2 of check point pack 2 */ cp_seg_blk += (le32_to_cpu(cp->cp_pack_total_block_count) - get_sb(cp_payload) - 1); DBG(1, "\tWriting cp page 2 of checkpoint pack 2, at offset 0x%08"PRIx64"\n", cp_seg_blk); if (dev_write_block(cp, cp_seg_blk)) { MSG(1, "\tError: While writing the cp to disk!!!\n"); goto free_cp_payload; } ret = 0; free_cp_payload: free(cp_payload); free_nat_bits: free(nat_bits); free_sum_compact: free(sum_compact); free_sum: free(sum); free_cp: free(cp); return ret; } static int f2fs_write_super_block(void) { int index; u_int8_t *zero_buff; zero_buff = calloc(F2FS_BLKSIZE, 1); if (zero_buff == NULL) { MSG(1, "\tError: Calloc Failed for super_blk_zero_buf!!!\n"); return -1; } memcpy(zero_buff + F2FS_SUPER_OFFSET, sb, sizeof(*sb)); DBG(1, "\tWriting super block, at offset 0x%08x\n", 0); for (index = 0; index < 2; index++) { if (dev_write_block(zero_buff, index)) { MSG(1, "\tError: While while writing super_blk " "on disk!!! index : %d\n", index); free(zero_buff); return -1; } } free(zero_buff); return 0; } #ifndef WITH_ANDROID static int f2fs_discard_obsolete_dnode(void) { struct f2fs_node *raw_node; u_int64_t next_blkaddr = 0, offset; u64 end_blkaddr = (get_sb(segment_count_main) << get_sb(log_blocks_per_seg)) + get_sb(main_blkaddr); u_int64_t start_inode_pos = get_sb(main_blkaddr); u_int64_t last_inode_pos; if (c.zoned_mode) return 0; raw_node = calloc(sizeof(struct f2fs_node), 1); if (raw_node == NULL) { MSG(1, "\tError: Calloc Failed for discard_raw_node!!!\n"); return -1; } /* avoid power-off-recovery based on roll-forward policy */ offset = get_sb(main_blkaddr); offset += c.cur_seg[CURSEG_WARM_NODE] * c.blks_per_seg; last_inode_pos = start_inode_pos + c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + c.quota_inum + c.lpf_inum; do { if (offset < get_sb(main_blkaddr) || offset >= end_blkaddr) break; if (dev_read_block(raw_node, offset)) { MSG(1, "\tError: While traversing direct node!!!\n"); free(raw_node); return -1; } next_blkaddr = le32_to_cpu(raw_node->footer.next_blkaddr); memset(raw_node, 0, F2FS_BLKSIZE); DBG(1, "\tDiscard dnode, at offset 0x%08"PRIx64"\n", offset); if (dev_write_block(raw_node, offset)) { MSG(1, "\tError: While discarding direct node!!!\n"); free(raw_node); return -1; } offset = next_blkaddr; /* should avoid recursive chain due to stale data */ if (offset >= start_inode_pos || offset <= last_inode_pos) break; } while (1); free(raw_node); return 0; } #endif static int f2fs_write_root_inode(void) { struct f2fs_node *raw_node = NULL; u_int64_t blk_size_bytes, data_blk_nor; u_int64_t main_area_node_seg_blk_offset = 0; raw_node = calloc(F2FS_BLKSIZE, 1); if (raw_node == NULL) { MSG(1, "\tError: Calloc Failed for raw_node!!!\n"); return -1; } raw_node->footer.nid = sb->root_ino; raw_node->footer.ino = sb->root_ino; raw_node->footer.cp_ver = cpu_to_le64(1); raw_node->footer.next_blkaddr = cpu_to_le32( get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + 1); raw_node->i.i_mode = cpu_to_le16(0x41ed); if (c.lpf_ino) raw_node->i.i_links = cpu_to_le32(3); else raw_node->i.i_links = cpu_to_le32(2); raw_node->i.i_uid = cpu_to_le32(c.root_uid); raw_node->i.i_gid = cpu_to_le32(c.root_gid); blk_size_bytes = 1 << get_sb(log_blocksize); raw_node->i.i_size = cpu_to_le64(1 * blk_size_bytes); /* dentry */ raw_node->i.i_blocks = cpu_to_le64(2); raw_node->i.i_atime = cpu_to_le32(time(NULL)); raw_node->i.i_atime_nsec = 0; raw_node->i.i_ctime = cpu_to_le32(time(NULL)); raw_node->i.i_ctime_nsec = 0; raw_node->i.i_mtime = cpu_to_le32(time(NULL)); raw_node->i.i_mtime_nsec = 0; raw_node->i.i_generation = 0; raw_node->i.i_xattr_nid = 0; raw_node->i.i_flags = 0; raw_node->i.i_current_depth = cpu_to_le32(1); raw_node->i.i_dir_level = DEF_DIR_LEVEL; if (c.feature & cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR)) { raw_node->i.i_inline = F2FS_EXTRA_ATTR; raw_node->i.i_extra_isize = cpu_to_le16(calc_extra_isize()); } if (c.feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) raw_node->i.i_projid = cpu_to_le32(F2FS_DEF_PROJID); if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CRTIME)) { raw_node->i.i_crtime = cpu_to_le32(time(NULL)); raw_node->i.i_crtime_nsec = 0; } data_blk_nor = get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_DATA] * c.blks_per_seg; raw_node->i.i_addr[get_extra_isize(raw_node)] = cpu_to_le32(data_blk_nor); raw_node->i.i_ext.fofs = 0; raw_node->i.i_ext.blk_addr = 0; raw_node->i.i_ext.len = 0; if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM)) raw_node->i.i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(raw_node)); main_area_node_seg_blk_offset = get_sb(main_blkaddr); main_area_node_seg_blk_offset += c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg; DBG(1, "\tWriting root inode (hot node), %x %x %x at offset 0x%08"PRIu64"\n", get_sb(main_blkaddr), c.cur_seg[CURSEG_HOT_NODE], c.blks_per_seg, main_area_node_seg_blk_offset); if (dev_write_block(raw_node, main_area_node_seg_blk_offset)) { MSG(1, "\tError: While writing the raw_node to disk!!!\n"); free(raw_node); return -1; } free(raw_node); return 0; } static int f2fs_write_default_quota(int qtype, unsigned int blkaddr, __le32 raw_id) { char *filebuf = calloc(F2FS_BLKSIZE, 2); int file_magics[] = INITQMAGICS; struct v2_disk_dqheader ddqheader; struct v2_disk_dqinfo ddqinfo; struct v2r1_disk_dqblk dqblk; if (filebuf == NULL) { MSG(1, "\tError: Calloc Failed for filebuf!!!\n"); return -1; } /* Write basic quota header */ ddqheader.dqh_magic = cpu_to_le32(file_magics[qtype]); /* only support QF_VFSV1 */ ddqheader.dqh_version = cpu_to_le32(1); memcpy(filebuf, &ddqheader, sizeof(ddqheader)); /* Fill Initial quota file content */ ddqinfo.dqi_bgrace = cpu_to_le32(MAX_DQ_TIME); ddqinfo.dqi_igrace = cpu_to_le32(MAX_IQ_TIME); ddqinfo.dqi_flags = cpu_to_le32(0); ddqinfo.dqi_blocks = cpu_to_le32(QT_TREEOFF + 5); ddqinfo.dqi_free_blk = cpu_to_le32(0); ddqinfo.dqi_free_entry = cpu_to_le32(5); memcpy(filebuf + V2_DQINFOOFF, &ddqinfo, sizeof(ddqinfo)); filebuf[1024] = 2; filebuf[2048] = 3; filebuf[3072] = 4; filebuf[4096] = 5; filebuf[5120 + 8] = 1; dqblk.dqb_id = raw_id; dqblk.dqb_pad = cpu_to_le32(0); dqblk.dqb_ihardlimit = cpu_to_le64(0); dqblk.dqb_isoftlimit = cpu_to_le64(0); if (c.lpf_ino) dqblk.dqb_curinodes = cpu_to_le64(2); else dqblk.dqb_curinodes = cpu_to_le64(1); dqblk.dqb_bhardlimit = cpu_to_le64(0); dqblk.dqb_bsoftlimit = cpu_to_le64(0); if (c.lpf_ino) dqblk.dqb_curspace = cpu_to_le64(8192); else dqblk.dqb_curspace = cpu_to_le64(4096); dqblk.dqb_btime = cpu_to_le64(0); dqblk.dqb_itime = cpu_to_le64(0); memcpy(filebuf + 5136, &dqblk, sizeof(struct v2r1_disk_dqblk)); /* Write two blocks */ if (dev_write_block(filebuf, blkaddr) || dev_write_block(filebuf + F2FS_BLKSIZE, blkaddr + 1)) { MSG(1, "\tError: While writing the quota_blk to disk!!!\n"); free(filebuf); return -1; } DBG(1, "\tWriting quota data, at offset %08x, %08x\n", blkaddr, blkaddr + 1); free(filebuf); c.quota_dnum += QUOTA_DATA(qtype); return 0; } static int f2fs_write_qf_inode(int qtype) { struct f2fs_node *raw_node = NULL; u_int64_t data_blk_nor; u_int64_t main_area_node_seg_blk_offset = 0; __le32 raw_id; int i; raw_node = calloc(F2FS_BLKSIZE, 1); if (raw_node == NULL) { MSG(1, "\tError: Calloc Failed for raw_node!!!\n"); return -1; } raw_node->footer.nid = sb->qf_ino[qtype]; raw_node->footer.ino = sb->qf_ino[qtype]; raw_node->footer.cp_ver = cpu_to_le64(1); raw_node->footer.next_blkaddr = cpu_to_le32( get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + 1 + qtype + 1); raw_node->i.i_mode = cpu_to_le16(0x8180); raw_node->i.i_links = cpu_to_le32(1); raw_node->i.i_uid = cpu_to_le32(c.root_uid); raw_node->i.i_gid = cpu_to_le32(c.root_gid); raw_node->i.i_size = cpu_to_le64(1024 * 6); /* Hard coded */ raw_node->i.i_blocks = cpu_to_le64(1 + QUOTA_DATA(qtype)); raw_node->i.i_atime = cpu_to_le32(time(NULL)); raw_node->i.i_atime_nsec = 0; raw_node->i.i_ctime = cpu_to_le32(time(NULL)); raw_node->i.i_ctime_nsec = 0; raw_node->i.i_mtime = cpu_to_le32(time(NULL)); raw_node->i.i_mtime_nsec = 0; raw_node->i.i_generation = 0; raw_node->i.i_xattr_nid = 0; raw_node->i.i_flags = FS_IMMUTABLE_FL; raw_node->i.i_current_depth = cpu_to_le32(0); raw_node->i.i_dir_level = DEF_DIR_LEVEL; if (c.feature & cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR)) { raw_node->i.i_inline = F2FS_EXTRA_ATTR; raw_node->i.i_extra_isize = cpu_to_le16(calc_extra_isize()); } if (c.feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) raw_node->i.i_projid = cpu_to_le32(F2FS_DEF_PROJID); data_blk_nor = get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_DATA] * c.blks_per_seg + 1; for (i = 0; i < qtype; i++) if (sb->qf_ino[i]) data_blk_nor += QUOTA_DATA(i); if (qtype == 0) raw_id = raw_node->i.i_uid; else if (qtype == 1) raw_id = raw_node->i.i_gid; else if (qtype == 2) raw_id = raw_node->i.i_projid; else ASSERT(0); /* write two blocks */ if (f2fs_write_default_quota(qtype, data_blk_nor, raw_id)) { free(raw_node); return -1; } for (i = 0; i < QUOTA_DATA(qtype); i++) raw_node->i.i_addr[get_extra_isize(raw_node) + i] = cpu_to_le32(data_blk_nor + i); raw_node->i.i_ext.fofs = 0; raw_node->i.i_ext.blk_addr = 0; raw_node->i.i_ext.len = 0; if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM)) raw_node->i.i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(raw_node)); main_area_node_seg_blk_offset = get_sb(main_blkaddr); main_area_node_seg_blk_offset += c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + qtype + 1; DBG(1, "\tWriting quota inode (hot node), %x %x %x at offset 0x%08"PRIu64"\n", get_sb(main_blkaddr), c.cur_seg[CURSEG_HOT_NODE], c.blks_per_seg, main_area_node_seg_blk_offset); if (dev_write_block(raw_node, main_area_node_seg_blk_offset)) { MSG(1, "\tError: While writing the raw_node to disk!!!\n"); free(raw_node); return -1; } free(raw_node); c.quota_inum++; return 0; } static int f2fs_update_nat_root(void) { struct f2fs_nat_block *nat_blk = NULL; u_int64_t nat_seg_blk_offset = 0; enum quota_type qtype; int i; nat_blk = calloc(F2FS_BLKSIZE, 1); if(nat_blk == NULL) { MSG(1, "\tError: Calloc Failed for nat_blk!!!\n"); return -1; } /* update quota */ for (qtype = i = 0; qtype < F2FS_MAX_QUOTAS; qtype++) { if (sb->qf_ino[qtype] == 0) continue; nat_blk->entries[sb->qf_ino[qtype]].block_addr = cpu_to_le32(get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + i + 1); nat_blk->entries[sb->qf_ino[qtype]].ino = sb->qf_ino[qtype]; i++; } /* update root */ nat_blk->entries[get_sb(root_ino)].block_addr = cpu_to_le32( get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg); nat_blk->entries[get_sb(root_ino)].ino = sb->root_ino; /* update node nat */ nat_blk->entries[get_sb(node_ino)].block_addr = cpu_to_le32(1); nat_blk->entries[get_sb(node_ino)].ino = sb->node_ino; /* update meta nat */ nat_blk->entries[get_sb(meta_ino)].block_addr = cpu_to_le32(1); nat_blk->entries[get_sb(meta_ino)].ino = sb->meta_ino; nat_seg_blk_offset = get_sb(nat_blkaddr); DBG(1, "\tWriting nat root, at offset 0x%08"PRIx64"\n", nat_seg_blk_offset); if (dev_write_block(nat_blk, nat_seg_blk_offset)) { MSG(1, "\tError: While writing the nat_blk set0 to disk!\n"); free(nat_blk); return -1; } free(nat_blk); return 0; } static block_t f2fs_add_default_dentry_lpf(void) { struct f2fs_dentry_block *dent_blk; uint64_t data_blk_offset; dent_blk = calloc(F2FS_BLKSIZE, 1); if (dent_blk == NULL) { MSG(1, "\tError: Calloc Failed for dent_blk!!!\n"); return 0; } dent_blk->dentry[0].hash_code = 0; dent_blk->dentry[0].ino = cpu_to_le32(c.lpf_ino); dent_blk->dentry[0].name_len = cpu_to_le16(1); dent_blk->dentry[0].file_type = F2FS_FT_DIR; memcpy(dent_blk->filename[0], ".", 1); dent_blk->dentry[1].hash_code = 0; dent_blk->dentry[1].ino = sb->root_ino; dent_blk->dentry[1].name_len = cpu_to_le16(2); dent_blk->dentry[1].file_type = F2FS_FT_DIR; memcpy(dent_blk->filename[1], "..", 2); test_and_set_bit_le(0, dent_blk->dentry_bitmap); test_and_set_bit_le(1, dent_blk->dentry_bitmap); data_blk_offset = get_sb(main_blkaddr); data_blk_offset += c.cur_seg[CURSEG_HOT_DATA] * c.blks_per_seg + 1 + c.quota_dnum; DBG(1, "\tWriting default dentry lost+found, at offset 0x%08"PRIx64"\n", data_blk_offset); if (dev_write_block(dent_blk, data_blk_offset)) { MSG(1, "\tError While writing the dentry_blk to disk!!!\n"); free(dent_blk); return 0; } free(dent_blk); c.lpf_dnum++; return data_blk_offset; } static int f2fs_write_lpf_inode(void) { struct f2fs_node *raw_node; u_int64_t blk_size_bytes, main_area_node_seg_blk_offset; block_t data_blk_nor; int err = 0; ASSERT(c.lpf_ino); raw_node = calloc(F2FS_BLKSIZE, 1); if (raw_node == NULL) { MSG(1, "\tError: Calloc Failed for raw_node!!!\n"); return -1; } raw_node->footer.nid = cpu_to_le32(c.lpf_ino); raw_node->footer.ino = raw_node->footer.nid; raw_node->footer.cp_ver = cpu_to_le64(1); raw_node->footer.next_blkaddr = cpu_to_le32( get_sb(main_blkaddr) + c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + 1 + c.quota_inum + 1); raw_node->i.i_mode = cpu_to_le16(0x41c0); /* 0700 */ raw_node->i.i_links = cpu_to_le32(2); raw_node->i.i_uid = cpu_to_le32(c.root_uid); raw_node->i.i_gid = cpu_to_le32(c.root_gid); blk_size_bytes = 1 << get_sb(log_blocksize); raw_node->i.i_size = cpu_to_le64(1 * blk_size_bytes); raw_node->i.i_blocks = cpu_to_le64(2); raw_node->i.i_atime = cpu_to_le32(time(NULL)); raw_node->i.i_atime_nsec = 0; raw_node->i.i_ctime = cpu_to_le32(time(NULL)); raw_node->i.i_ctime_nsec = 0; raw_node->i.i_mtime = cpu_to_le32(time(NULL)); raw_node->i.i_mtime_nsec = 0; raw_node->i.i_generation = 0; raw_node->i.i_xattr_nid = 0; raw_node->i.i_flags = 0; raw_node->i.i_pino = le32_to_cpu(sb->root_ino); raw_node->i.i_namelen = le32_to_cpu(strlen(LPF)); memcpy(raw_node->i.i_name, LPF, strlen(LPF)); raw_node->i.i_current_depth = cpu_to_le32(1); raw_node->i.i_dir_level = DEF_DIR_LEVEL; if (c.feature & cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR)) { raw_node->i.i_inline = F2FS_EXTRA_ATTR; raw_node->i.i_extra_isize = cpu_to_le16(calc_extra_isize()); } if (c.feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) raw_node->i.i_projid = cpu_to_le32(F2FS_DEF_PROJID); if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CRTIME)) { raw_node->i.i_crtime = cpu_to_le32(time(NULL)); raw_node->i.i_crtime_nsec = 0; } data_blk_nor = f2fs_add_default_dentry_lpf(); if (data_blk_nor == 0) { MSG(1, "\tError: Failed to add default dentries for lost+found!!!\n"); err = -1; goto exit; } raw_node->i.i_addr[get_extra_isize(raw_node)] = cpu_to_le32(data_blk_nor); if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM)) raw_node->i.i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(raw_node)); main_area_node_seg_blk_offset = get_sb(main_blkaddr); main_area_node_seg_blk_offset += c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + c.quota_inum + 1; DBG(1, "\tWriting lost+found inode (hot node), %x %x %x at offset 0x%08"PRIu64"\n", get_sb(main_blkaddr), c.cur_seg[CURSEG_HOT_NODE], c.blks_per_seg, main_area_node_seg_blk_offset); if (dev_write_block(raw_node, main_area_node_seg_blk_offset)) { MSG(1, "\tError: While writing the raw_node to disk!!!\n"); err = -1; goto exit; } c.lpf_inum++; exit: free(raw_node); return err; } static int f2fs_add_default_dentry_root(void) { struct f2fs_dentry_block *dent_blk = NULL; u_int64_t data_blk_offset = 0; dent_blk = calloc(F2FS_BLKSIZE, 1); if(dent_blk == NULL) { MSG(1, "\tError: Calloc Failed for dent_blk!!!\n"); return -1; } dent_blk->dentry[0].hash_code = 0; dent_blk->dentry[0].ino = sb->root_ino; dent_blk->dentry[0].name_len = cpu_to_le16(1); dent_blk->dentry[0].file_type = F2FS_FT_DIR; memcpy(dent_blk->filename[0], ".", 1); dent_blk->dentry[1].hash_code = 0; dent_blk->dentry[1].ino = sb->root_ino; dent_blk->dentry[1].name_len = cpu_to_le16(2); dent_blk->dentry[1].file_type = F2FS_FT_DIR; memcpy(dent_blk->filename[1], "..", 2); /* bitmap for . and .. */ test_and_set_bit_le(0, dent_blk->dentry_bitmap); test_and_set_bit_le(1, dent_blk->dentry_bitmap); if (c.lpf_ino) { int len = strlen(LPF); f2fs_hash_t hash = f2fs_dentry_hash((unsigned char *)LPF, len); dent_blk->dentry[2].hash_code = cpu_to_le32(hash); dent_blk->dentry[2].ino = cpu_to_le32(c.lpf_ino); dent_blk->dentry[2].name_len = cpu_to_le16(len); dent_blk->dentry[2].file_type = F2FS_FT_DIR; memcpy(dent_blk->filename[2], LPF, F2FS_SLOT_LEN); memcpy(dent_blk->filename[3], LPF + F2FS_SLOT_LEN, len - F2FS_SLOT_LEN); test_and_set_bit_le(2, dent_blk->dentry_bitmap); test_and_set_bit_le(3, dent_blk->dentry_bitmap); } data_blk_offset = get_sb(main_blkaddr); data_blk_offset += c.cur_seg[CURSEG_HOT_DATA] * c.blks_per_seg; DBG(1, "\tWriting default dentry root, at offset 0x%08"PRIx64"\n", data_blk_offset); if (dev_write_block(dent_blk, data_blk_offset)) { MSG(1, "\tError: While writing the dentry_blk to disk!!!\n"); free(dent_blk); return -1; } free(dent_blk); return 0; } static int f2fs_create_root_dir(void) { enum quota_type qtype; int err = 0; err = f2fs_write_root_inode(); if (err < 0) { MSG(1, "\tError: Failed to write root inode!!!\n"); goto exit; } for (qtype = 0; qtype < F2FS_MAX_QUOTAS; qtype++) { if (sb->qf_ino[qtype] == 0) continue; err = f2fs_write_qf_inode(qtype); if (err < 0) { MSG(1, "\tError: Failed to write quota inode!!!\n"); goto exit; } } if (c.feature & cpu_to_le32(F2FS_FEATURE_LOST_FOUND)) { err = f2fs_write_lpf_inode(); if (err < 0) { MSG(1, "\tError: Failed to write lost+found inode!!!\n"); goto exit; } } #ifndef WITH_ANDROID err = f2fs_discard_obsolete_dnode(); if (err < 0) { MSG(1, "\tError: Failed to discard obsolete dnode!!!\n"); goto exit; } #endif err = f2fs_update_nat_root(); if (err < 0) { MSG(1, "\tError: Failed to update NAT for root!!!\n"); goto exit; } err = f2fs_add_default_dentry_root(); if (err < 0) { MSG(1, "\tError: Failed to add default dentries for root!!!\n"); goto exit; } exit: if (err) MSG(1, "\tError: Could not create the root directory!!!\n"); return err; } int f2fs_format_device(void) { int err = 0; err= f2fs_prepare_super_block(); if (err < 0) { MSG(0, "\tError: Failed to prepare a super block!!!\n"); goto exit; } if (c.trim) { err = f2fs_trim_devices(); if (err < 0) { MSG(0, "\tError: Failed to trim whole device!!!\n"); goto exit; } } err = f2fs_init_sit_area(); if (err < 0) { MSG(0, "\tError: Failed to initialise the SIT AREA!!!\n"); goto exit; } err = f2fs_init_nat_area(); if (err < 0) { MSG(0, "\tError: Failed to initialise the NAT AREA!!!\n"); goto exit; } err = f2fs_create_root_dir(); if (err < 0) { MSG(0, "\tError: Failed to create the root directory!!!\n"); goto exit; } err = f2fs_write_check_point_pack(); if (err < 0) { MSG(0, "\tError: Failed to write the check point pack!!!\n"); goto exit; } err = f2fs_write_super_block(); if (err < 0) { MSG(0, "\tError: Failed to write the super block!!!\n"); goto exit; } exit: if (err) MSG(0, "\tError: Could not format the device!!!\n"); return err; }