From 4305d024938113df5d73021a09eb2a991f54ca2f Mon Sep 17 00:00:00 2001 From: Dimitri John Ledkov Date: Mon, 13 Feb 2017 11:24:33 +0000 Subject: New upstream release Closes: #849353, #817806, #854915, #845473 --- mkfs.c | 1953 ---------------------------------------------------------------- 1 file changed, 1953 deletions(-) delete mode 100644 mkfs.c (limited to 'mkfs.c') diff --git a/mkfs.c b/mkfs.c deleted file mode 100644 index 4b88987c..00000000 --- a/mkfs.c +++ /dev/null @@ -1,1953 +0,0 @@ -/* - * Copyright (C) 2007 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License v2 as published by the Free Software Foundation. - * - * 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, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#include "kerncompat.h" -#include "androidcompat.h" - -#include -#include -#include "ioctl.h" -#include -#include -#include -#include -/* #include included via androidcompat.h */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "ctree.h" -#include "disk-io.h" -#include "volumes.h" -#include "transaction.h" -#include "utils.h" -#include "list_sort.h" - -static u64 index_cnt = 2; -static int verbose = 1; - -struct directory_name_entry { - char *dir_name; - char *path; - ino_t inum; - struct list_head list; -}; - -struct mkfs_allocation { - u64 data; - u64 metadata; - u64 mixed; - u64 system; -}; - -static int create_metadata_block_groups(struct btrfs_root *root, int mixed, - struct mkfs_allocation *allocation) -{ - struct btrfs_trans_handle *trans; - u64 bytes_used; - u64 chunk_start = 0; - u64 chunk_size = 0; - int ret; - - trans = btrfs_start_transaction(root, 1); - bytes_used = btrfs_super_bytes_used(root->fs_info->super_copy); - - root->fs_info->system_allocs = 1; - ret = btrfs_make_block_group(trans, root, bytes_used, - BTRFS_BLOCK_GROUP_SYSTEM, - BTRFS_FIRST_CHUNK_TREE_OBJECTID, - 0, BTRFS_MKFS_SYSTEM_GROUP_SIZE); - allocation->system += BTRFS_MKFS_SYSTEM_GROUP_SIZE; - if (ret) - return ret; - - if (mixed) { - ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root, - &chunk_start, &chunk_size, - BTRFS_BLOCK_GROUP_METADATA | - BTRFS_BLOCK_GROUP_DATA); - if (ret == -ENOSPC) { - error("no space to allocate data/metadata chunk"); - goto err; - } - if (ret) - return ret; - ret = btrfs_make_block_group(trans, root, 0, - BTRFS_BLOCK_GROUP_METADATA | - BTRFS_BLOCK_GROUP_DATA, - BTRFS_FIRST_CHUNK_TREE_OBJECTID, - chunk_start, chunk_size); - if (ret) - return ret; - allocation->mixed += chunk_size; - } else { - ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root, - &chunk_start, &chunk_size, - BTRFS_BLOCK_GROUP_METADATA); - if (ret == -ENOSPC) { - error("no space to allocate metadata chunk"); - goto err; - } - if (ret) - return ret; - ret = btrfs_make_block_group(trans, root, 0, - BTRFS_BLOCK_GROUP_METADATA, - BTRFS_FIRST_CHUNK_TREE_OBJECTID, - chunk_start, chunk_size); - allocation->metadata += chunk_size; - if (ret) - return ret; - } - - root->fs_info->system_allocs = 0; - ret = btrfs_commit_transaction(trans, root); - -err: - return ret; -} - -static int create_data_block_groups(struct btrfs_trans_handle *trans, - struct btrfs_root *root, int mixed, - struct mkfs_allocation *allocation) -{ - u64 chunk_start = 0; - u64 chunk_size = 0; - int ret = 0; - - if (!mixed) { - ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root, - &chunk_start, &chunk_size, - BTRFS_BLOCK_GROUP_DATA); - if (ret == -ENOSPC) { - error("no space to allocate data chunk"); - goto err; - } - if (ret) - return ret; - ret = btrfs_make_block_group(trans, root, 0, - BTRFS_BLOCK_GROUP_DATA, - BTRFS_FIRST_CHUNK_TREE_OBJECTID, - chunk_start, chunk_size); - allocation->data += chunk_size; - if (ret) - return ret; - } - -err: - return ret; -} - -static int make_root_dir(struct btrfs_trans_handle *trans, struct btrfs_root *root, - struct mkfs_allocation *allocation) -{ - struct btrfs_key location; - int ret; - - ret = btrfs_make_root_dir(trans, root->fs_info->tree_root, - BTRFS_ROOT_TREE_DIR_OBJECTID); - if (ret) - goto err; - ret = btrfs_make_root_dir(trans, root, BTRFS_FIRST_FREE_OBJECTID); - if (ret) - goto err; - memcpy(&location, &root->fs_info->fs_root->root_key, sizeof(location)); - location.offset = (u64)-1; - ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root, - "default", 7, - btrfs_super_root_dir(root->fs_info->super_copy), - &location, BTRFS_FT_DIR, 0); - if (ret) - goto err; - - ret = btrfs_insert_inode_ref(trans, root->fs_info->tree_root, - "default", 7, location.objectid, - BTRFS_ROOT_TREE_DIR_OBJECTID, 0); - if (ret) - goto err; - -err: - return ret; -} - -static int __recow_root(struct btrfs_trans_handle *trans, - struct btrfs_root *root) -{ - struct extent_buffer *tmp; - int ret; - - if (trans->transid != btrfs_root_generation(&root->root_item)) { - extent_buffer_get(root->node); - ret = __btrfs_cow_block(trans, root, root->node, - NULL, 0, &tmp, 0, 0); - if (ret) - return ret; - free_extent_buffer(tmp); - } - - return 0; -} - -static int recow_roots(struct btrfs_trans_handle *trans, - struct btrfs_root *root) -{ - struct btrfs_fs_info *info = root->fs_info; - int ret; - - ret = __recow_root(trans, info->fs_root); - if (ret) - return ret; - ret = __recow_root(trans, info->tree_root); - if (ret) - return ret; - ret = __recow_root(trans, info->extent_root); - if (ret) - return ret; - ret = __recow_root(trans, info->chunk_root); - if (ret) - return ret; - ret = __recow_root(trans, info->dev_root); - if (ret) - return ret; - ret = __recow_root(trans, info->csum_root); - if (ret) - return ret; - - return 0; -} - -static int create_one_raid_group(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 type, - struct mkfs_allocation *allocation) - -{ - u64 chunk_start; - u64 chunk_size; - int ret; - - ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root, - &chunk_start, &chunk_size, type); - if (ret == -ENOSPC) { - error("not enough free space to allocate chunk"); - exit(1); - } - if (ret) - return ret; - - ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0, - type, BTRFS_FIRST_CHUNK_TREE_OBJECTID, - chunk_start, chunk_size); - - type &= BTRFS_BLOCK_GROUP_TYPE_MASK; - if (type == BTRFS_BLOCK_GROUP_DATA) { - allocation->data += chunk_size; - } else if (type == BTRFS_BLOCK_GROUP_METADATA) { - allocation->metadata += chunk_size; - } else if (type == BTRFS_BLOCK_GROUP_SYSTEM) { - allocation->system += chunk_size; - } else if (type == - (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA)) { - allocation->mixed += chunk_size; - } else { - error("unrecognized profile type: 0x%llx", - (unsigned long long)type); - ret = -EINVAL; - } - - return ret; -} - -static int create_raid_groups(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 data_profile, - u64 metadata_profile, int mixed, - struct mkfs_allocation *allocation) -{ - int ret; - - if (metadata_profile) { - u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA; - - ret = create_one_raid_group(trans, root, - BTRFS_BLOCK_GROUP_SYSTEM | - metadata_profile, allocation); - if (ret) - return ret; - - if (mixed) - meta_flags |= BTRFS_BLOCK_GROUP_DATA; - - ret = create_one_raid_group(trans, root, meta_flags | - metadata_profile, allocation); - if (ret) - return ret; - - } - if (!mixed && data_profile) { - ret = create_one_raid_group(trans, root, - BTRFS_BLOCK_GROUP_DATA | - data_profile, allocation); - if (ret) - return ret; - } - ret = recow_roots(trans, root); - - return ret; -} - -static int create_data_reloc_tree(struct btrfs_trans_handle *trans, - struct btrfs_root *root) -{ - struct btrfs_key location; - struct btrfs_root_item root_item; - struct extent_buffer *tmp; - u64 objectid = BTRFS_DATA_RELOC_TREE_OBJECTID; - int ret; - - ret = btrfs_copy_root(trans, root, root->node, &tmp, objectid); - if (ret) - return ret; - - memcpy(&root_item, &root->root_item, sizeof(root_item)); - btrfs_set_root_bytenr(&root_item, tmp->start); - btrfs_set_root_level(&root_item, btrfs_header_level(tmp)); - btrfs_set_root_generation(&root_item, trans->transid); - free_extent_buffer(tmp); - - location.objectid = objectid; - location.type = BTRFS_ROOT_ITEM_KEY; - location.offset = 0; - ret = btrfs_insert_root(trans, root->fs_info->tree_root, - &location, &root_item); - - return ret; -} - -static void print_usage(int ret) -{ - printf("usage: mkfs.btrfs [options] dev [ dev ... ]\n"); - printf("options:\n"); - printf("\t-A|--alloc-start START the offset to start the FS\n"); - printf("\t-b|--byte-count SIZE total number of bytes in the FS\n"); - printf("\t-d|--data PROFILE data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n"); - printf("\t-f|--force force overwrite of existing filesystem\n"); - printf("\t-l|--leafsize SIZE deprecated, alias for nodesize\n"); - printf("\t-L|--label LABEL set a label\n"); - printf("\t-m|--metadata PROFILE metadata profile, values like data profile\n"); - printf("\t-M|--mixed mix metadata and data together\n"); - printf("\t-n|--nodesize SIZE size of btree nodes\n"); - printf("\t-s|--sectorsize SIZE min block allocation (may not mountable by current kernel)\n"); - printf("\t-r|--rootdir DIR the source directory\n"); - printf("\t-K|--nodiscard do not perform whole device TRIM\n"); - printf("\t-O|--features LIST comma separated list of filesystem features, use '-O list-all' to list features\n"); - printf("\t-U|--uuid UUID specify the filesystem UUID\n"); - printf("\t-q|--quiet no messages except errors\n"); - printf("\t-V|--version print the mkfs.btrfs version and exit\n"); - exit(ret); -} - -static u64 parse_profile(char *s) -{ - if (strcasecmp(s, "raid0") == 0) { - return BTRFS_BLOCK_GROUP_RAID0; - } else if (strcasecmp(s, "raid1") == 0) { - return BTRFS_BLOCK_GROUP_RAID1; - } else if (strcasecmp(s, "raid5") == 0) { - return BTRFS_BLOCK_GROUP_RAID5; - } else if (strcasecmp(s, "raid6") == 0) { - return BTRFS_BLOCK_GROUP_RAID6; - } else if (strcasecmp(s, "raid10") == 0) { - return BTRFS_BLOCK_GROUP_RAID10; - } else if (strcasecmp(s, "dup") == 0) { - return BTRFS_BLOCK_GROUP_DUP; - } else if (strcasecmp(s, "single") == 0) { - return 0; - } else { - error("unknown profile %s", s); - exit(1); - } - /* not reached */ - return 0; -} - -static char *parse_label(char *input) -{ - int len = strlen(input); - - if (len >= BTRFS_LABEL_SIZE) { - error("label %s is too long (max %d)", input, - BTRFS_LABEL_SIZE - 1); - exit(1); - } - return strdup(input); -} - -static int add_directory_items(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 objectid, - ino_t parent_inum, const char *name, - struct stat *st, int *dir_index_cnt) -{ - int ret; - int name_len; - struct btrfs_key location; - u8 filetype = 0; - - name_len = strlen(name); - - location.objectid = objectid; - location.offset = 0; - btrfs_set_key_type(&location, BTRFS_INODE_ITEM_KEY); - - if (S_ISDIR(st->st_mode)) - filetype = BTRFS_FT_DIR; - if (S_ISREG(st->st_mode)) - filetype = BTRFS_FT_REG_FILE; - if (S_ISLNK(st->st_mode)) - filetype = BTRFS_FT_SYMLINK; - - ret = btrfs_insert_dir_item(trans, root, name, name_len, - parent_inum, &location, - filetype, index_cnt); - if (ret) - return ret; - ret = btrfs_insert_inode_ref(trans, root, name, name_len, - objectid, parent_inum, index_cnt); - *dir_index_cnt = index_cnt; - index_cnt++; - - return ret; -} - -static int fill_inode_item(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_inode_item *dst, struct stat *src) -{ - u64 blocks = 0; - u64 sectorsize = root->sectorsize; - - /* - * btrfs_inode_item has some reserved fields - * and represents on-disk inode entry, so - * zero everything to prevent information leak - */ - memset(dst, 0, sizeof (*dst)); - - btrfs_set_stack_inode_generation(dst, trans->transid); - btrfs_set_stack_inode_size(dst, src->st_size); - btrfs_set_stack_inode_nbytes(dst, 0); - btrfs_set_stack_inode_block_group(dst, 0); - btrfs_set_stack_inode_nlink(dst, src->st_nlink); - btrfs_set_stack_inode_uid(dst, src->st_uid); - btrfs_set_stack_inode_gid(dst, src->st_gid); - btrfs_set_stack_inode_mode(dst, src->st_mode); - btrfs_set_stack_inode_rdev(dst, 0); - btrfs_set_stack_inode_flags(dst, 0); - btrfs_set_stack_timespec_sec(&dst->atime, src->st_atime); - btrfs_set_stack_timespec_nsec(&dst->atime, 0); - btrfs_set_stack_timespec_sec(&dst->ctime, src->st_ctime); - btrfs_set_stack_timespec_nsec(&dst->ctime, 0); - btrfs_set_stack_timespec_sec(&dst->mtime, src->st_mtime); - btrfs_set_stack_timespec_nsec(&dst->mtime, 0); - btrfs_set_stack_timespec_sec(&dst->otime, 0); - btrfs_set_stack_timespec_nsec(&dst->otime, 0); - - if (S_ISDIR(src->st_mode)) { - btrfs_set_stack_inode_size(dst, 0); - btrfs_set_stack_inode_nlink(dst, 1); - } - if (S_ISREG(src->st_mode)) { - btrfs_set_stack_inode_size(dst, (u64)src->st_size); - if (src->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) - btrfs_set_stack_inode_nbytes(dst, src->st_size); - else { - blocks = src->st_size / sectorsize; - if (src->st_size % sectorsize) - blocks += 1; - blocks *= sectorsize; - btrfs_set_stack_inode_nbytes(dst, blocks); - } - } - if (S_ISLNK(src->st_mode)) - btrfs_set_stack_inode_nbytes(dst, src->st_size + 1); - - return 0; -} - -static int directory_select(const struct direct *entry) -{ - if ((strncmp(entry->d_name, ".", entry->d_reclen) == 0) || - (strncmp(entry->d_name, "..", entry->d_reclen) == 0)) - return 0; - else - return 1; -} - -static void free_namelist(struct direct **files, int count) -{ - int i; - - if (count < 0) - return; - - for (i = 0; i < count; ++i) - free(files[i]); - free(files); -} - -static u64 calculate_dir_inode_size(char *dirname) -{ - int count, i; - struct direct **files, *cur_file; - u64 dir_inode_size = 0; - - count = scandir(dirname, &files, directory_select, NULL); - - for (i = 0; i < count; i++) { - cur_file = files[i]; - dir_inode_size += strlen(cur_file->d_name); - } - - free_namelist(files, count); - - dir_inode_size *= 2; - return dir_inode_size; -} - -static int add_inode_items(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct stat *st, char *name, - u64 self_objectid, ino_t parent_inum, - int dir_index_cnt, struct btrfs_inode_item *inode_ret) -{ - int ret; - struct btrfs_key inode_key; - struct btrfs_inode_item btrfs_inode; - u64 objectid; - u64 inode_size = 0; - - fill_inode_item(trans, root, &btrfs_inode, st); - objectid = self_objectid; - - if (S_ISDIR(st->st_mode)) { - inode_size = calculate_dir_inode_size(name); - btrfs_set_stack_inode_size(&btrfs_inode, inode_size); - } - - inode_key.objectid = objectid; - inode_key.offset = 0; - btrfs_set_key_type(&inode_key, BTRFS_INODE_ITEM_KEY); - - ret = btrfs_insert_inode(trans, root, objectid, &btrfs_inode); - - *inode_ret = btrfs_inode; - return ret; -} - -static int add_xattr_item(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 objectid, - const char *file_name) -{ - int ret; - int cur_name_len; - char xattr_list[XATTR_LIST_MAX]; - char *cur_name; - char cur_value[XATTR_SIZE_MAX]; - char delimiter = '\0'; - char *next_location = xattr_list; - - ret = llistxattr(file_name, xattr_list, XATTR_LIST_MAX); - if (ret < 0) { - if(errno == ENOTSUP) - return 0; - error("getting a list of xattr failed for %s: %s", file_name, - strerror(errno)); - return ret; - } - if (ret == 0) - return ret; - - cur_name = strtok(xattr_list, &delimiter); - while (cur_name != NULL) { - cur_name_len = strlen(cur_name); - next_location += cur_name_len + 1; - - ret = getxattr(file_name, cur_name, cur_value, XATTR_SIZE_MAX); - if (ret < 0) { - if(errno == ENOTSUP) - return 0; - error("gettig a xattr value failed for %s attr %s: %s", - file_name, cur_name, strerror(errno)); - return ret; - } - - ret = btrfs_insert_xattr_item(trans, root, cur_name, - cur_name_len, cur_value, - ret, objectid); - if (ret) { - error("inserting a xattr item failed for %s: %s", - file_name, strerror(-ret)); - } - - cur_name = strtok(next_location, &delimiter); - } - - return ret; -} - -static int add_symbolic_link(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - u64 objectid, const char *path_name) -{ - int ret; - char buf[PATH_MAX]; - - ret = readlink(path_name, buf, sizeof(buf)); - if (ret <= 0) { - error("readlink failed for %s: %s", path_name, strerror(errno)); - goto fail; - } - if (ret >= sizeof(buf)) { - error("symlink too long for %s", path_name); - ret = -1; - goto fail; - } - - buf[ret] = '\0'; /* readlink does not do it for us */ - ret = btrfs_insert_inline_extent(trans, root, objectid, 0, - buf, ret + 1); -fail: - return ret; -} - -static int add_file_items(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_inode_item *btrfs_inode, u64 objectid, - ino_t parent_inum, struct stat *st, - const char *path_name, int out_fd) -{ - int ret = -1; - ssize_t ret_read; - u64 bytes_read = 0; - struct btrfs_key key; - int blocks; - u32 sectorsize = root->sectorsize; - u64 first_block = 0; - u64 file_pos = 0; - u64 cur_bytes; - u64 total_bytes; - struct extent_buffer *eb = NULL; - int fd; - - if (st->st_size == 0) - return 0; - - fd = open(path_name, O_RDONLY); - if (fd == -1) { - error("cannot open %s: %s", path_name, strerror(errno)); - return ret; - } - - blocks = st->st_size / sectorsize; - if (st->st_size % sectorsize) - blocks += 1; - - if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) { - char *buffer = malloc(st->st_size); - - if (!buffer) { - ret = -ENOMEM; - goto end; - } - - ret_read = pread64(fd, buffer, st->st_size, bytes_read); - if (ret_read == -1) { - error("cannot read %s at offset %llu length %llu: %s", - path_name, (unsigned long long)bytes_read, - (unsigned long long)st->st_size, - strerror(errno)); - free(buffer); - goto end; - } - - ret = btrfs_insert_inline_extent(trans, root, objectid, 0, - buffer, st->st_size); - free(buffer); - goto end; - } - - /* round up our st_size to the FS blocksize */ - total_bytes = (u64)blocks * sectorsize; - - /* - * do our IO in extent buffers so it can work - * against any raid type - */ - eb = calloc(1, sizeof(*eb) + sectorsize); - if (!eb) { - ret = -ENOMEM; - goto end; - } - -again: - - /* - * keep our extent size at 1MB max, this makes it easier to work inside - * the tiny block groups created during mkfs - */ - cur_bytes = min(total_bytes, 1024ULL * 1024); - ret = btrfs_reserve_extent(trans, root, cur_bytes, 0, 0, (u64)-1, - &key, 1); - if (ret) - goto end; - - first_block = key.objectid; - bytes_read = 0; - - while (bytes_read < cur_bytes) { - - memset(eb->data, 0, sectorsize); - - ret_read = pread64(fd, eb->data, sectorsize, file_pos + bytes_read); - if (ret_read == -1) { - error("cannot read %s at offset %llu length %llu: %s", - path_name, - (unsigned long long)file_pos + bytes_read, - (unsigned long long)sectorsize, - strerror(errno)); - goto end; - } - - eb->start = first_block + bytes_read; - eb->len = sectorsize; - - /* - * we're doing the csum before we record the extent, but - * that's ok - */ - ret = btrfs_csum_file_block(trans, root->fs_info->csum_root, - first_block + bytes_read + sectorsize, - first_block + bytes_read, - eb->data, sectorsize); - if (ret) - goto end; - - ret = write_and_map_eb(trans, root, eb); - if (ret) { - error("failed to write %s", path_name); - goto end; - } - - bytes_read += sectorsize; - } - - if (bytes_read) { - ret = btrfs_record_file_extent(trans, root, objectid, btrfs_inode, - file_pos, first_block, cur_bytes); - if (ret) - goto end; - - } - - file_pos += cur_bytes; - total_bytes -= cur_bytes; - - if (total_bytes) - goto again; - -end: - free(eb); - close(fd); - return ret; -} - -static char *make_path(char *dir, char *name) -{ - char *path; - - path = malloc(strlen(dir) + strlen(name) + 2); - if (!path) - return NULL; - strcpy(path, dir); - if (dir[strlen(dir) - 1] != '/') - strcat(path, "/"); - strcat(path, name); - return path; -} - -static int traverse_directory(struct btrfs_trans_handle *trans, - struct btrfs_root *root, char *dir_name, - struct directory_name_entry *dir_head, int out_fd) -{ - int ret = 0; - - struct btrfs_inode_item cur_inode; - struct btrfs_inode_item *inode_item; - int count, i, dir_index_cnt; - struct direct **files; - struct stat st; - struct directory_name_entry *dir_entry, *parent_dir_entry; - struct direct *cur_file; - ino_t parent_inum, cur_inum; - ino_t highest_inum = 0; - char *parent_dir_name; - char real_path[PATH_MAX]; - struct btrfs_path path; - struct extent_buffer *leaf; - struct btrfs_key root_dir_key; - u64 root_dir_inode_size = 0; - - /* Add list for source directory */ - dir_entry = malloc(sizeof(struct directory_name_entry)); - if (!dir_entry) - return -ENOMEM; - dir_entry->dir_name = dir_name; - dir_entry->path = realpath(dir_name, real_path); - if (!dir_entry->path) { - error("realpath failed for %s: %s", dir_name, strerror(errno)); - ret = -1; - goto fail_no_dir; - } - - parent_inum = highest_inum + BTRFS_FIRST_FREE_OBJECTID; - dir_entry->inum = parent_inum; - list_add_tail(&dir_entry->list, &dir_head->list); - - btrfs_init_path(&path); - - root_dir_key.objectid = btrfs_root_dirid(&root->root_item); - root_dir_key.offset = 0; - btrfs_set_key_type(&root_dir_key, BTRFS_INODE_ITEM_KEY); - ret = btrfs_lookup_inode(trans, root, &path, &root_dir_key, 1); - if (ret) { - error("failed to lookup root dir: %d", ret); - goto fail_no_dir; - } - - leaf = path.nodes[0]; - inode_item = btrfs_item_ptr(leaf, path.slots[0], - struct btrfs_inode_item); - - root_dir_inode_size = calculate_dir_inode_size(dir_name); - btrfs_set_inode_size(leaf, inode_item, root_dir_inode_size); - btrfs_mark_buffer_dirty(leaf); - - btrfs_release_path(&path); - - do { - parent_dir_entry = list_entry(dir_head->list.next, - struct directory_name_entry, - list); - list_del(&parent_dir_entry->list); - - parent_inum = parent_dir_entry->inum; - parent_dir_name = parent_dir_entry->dir_name; - if (chdir(parent_dir_entry->path)) { - error("chdir failed for %s: %s", - parent_dir_name, strerror(errno)); - ret = -1; - goto fail_no_files; - } - - count = scandir(parent_dir_entry->path, &files, - directory_select, NULL); - if (count == -1) - { - error("scandir failed for %s: %s", - parent_dir_name, strerror (errno)); - ret = -1; - goto fail; - } - - for (i = 0; i < count; i++) { - cur_file = files[i]; - - if (lstat(cur_file->d_name, &st) == -1) { - error("lstat failed for %s: %s", - cur_file->d_name, strerror(errno)); - ret = -1; - goto fail; - } - - cur_inum = st.st_ino; - ret = add_directory_items(trans, root, - cur_inum, parent_inum, - cur_file->d_name, - &st, &dir_index_cnt); - if (ret) { - error("unable to add directory items for %s: %d", - cur_file->d_name, ret); - goto fail; - } - - ret = add_inode_items(trans, root, &st, - cur_file->d_name, cur_inum, - parent_inum, dir_index_cnt, - &cur_inode); - if (ret == -EEXIST) { - if (st.st_nlink <= 1) { - error( - "item %s already exists but has wrong st_nlink %ld <= 1", - cur_file->d_name, st.st_nlink); - goto fail; - } - continue; - } - if (ret) { - error("unable to add inode items for %s: %d", - cur_file->d_name, ret); - goto fail; - } - - ret = add_xattr_item(trans, root, - cur_inum, cur_file->d_name); - if (ret) { - error("unable to add xattr items for %s: %d", - cur_file->d_name, ret); - if(ret != -ENOTSUP) - goto fail; - } - - if (S_ISDIR(st.st_mode)) { - dir_entry = malloc(sizeof(struct directory_name_entry)); - if (!dir_entry) { - ret = -ENOMEM; - goto fail; - } - dir_entry->dir_name = cur_file->d_name; - dir_entry->path = make_path(parent_dir_entry->path, - cur_file->d_name); - dir_entry->inum = cur_inum; - list_add_tail(&dir_entry->list, &dir_head->list); - } else if (S_ISREG(st.st_mode)) { - ret = add_file_items(trans, root, &cur_inode, - cur_inum, parent_inum, &st, - cur_file->d_name, out_fd); - if (ret) { - error("unable to add file items for %s: %d", - cur_file->d_name, ret); - goto fail; - } - } else if (S_ISLNK(st.st_mode)) { - ret = add_symbolic_link(trans, root, - cur_inum, cur_file->d_name); - if (ret) { - error("unable to add symlink for %s: %d", - cur_file->d_name, ret); - goto fail; - } - } - } - - free_namelist(files, count); - free(parent_dir_entry); - - index_cnt = 2; - - } while (!list_empty(&dir_head->list)); - -out: - return !!ret; -fail: - free_namelist(files, count); -fail_no_files: - free(parent_dir_entry); - goto out; -fail_no_dir: - free(dir_entry); - goto out; -} - -static int open_target(char *output_name) -{ - int output_fd; - output_fd = open(output_name, O_CREAT | O_RDWR, - S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH); - - return output_fd; -} - -static int create_chunks(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 num_of_meta_chunks, - u64 size_of_data, - struct mkfs_allocation *allocation) -{ - u64 chunk_start; - u64 chunk_size; - u64 meta_type = BTRFS_BLOCK_GROUP_METADATA; - u64 data_type = BTRFS_BLOCK_GROUP_DATA; - u64 minimum_data_chunk_size = 8 * 1024 * 1024; - u64 i; - int ret; - - for (i = 0; i < num_of_meta_chunks; i++) { - ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root, - &chunk_start, &chunk_size, meta_type); - if (ret) - return ret; - ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0, - meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID, - chunk_start, chunk_size); - allocation->metadata += chunk_size; - if (ret) - return ret; - set_extent_dirty(&root->fs_info->free_space_cache, - chunk_start, chunk_start + chunk_size - 1, 0); - } - - if (size_of_data < minimum_data_chunk_size) - size_of_data = minimum_data_chunk_size; - - ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root, - &chunk_start, size_of_data, data_type, 0); - if (ret) - return ret; - ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0, - data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID, - chunk_start, size_of_data); - allocation->data += size_of_data; - if (ret) - return ret; - set_extent_dirty(&root->fs_info->free_space_cache, - chunk_start, chunk_start + size_of_data - 1, 0); - return ret; -} - -static int make_image(char *source_dir, struct btrfs_root *root, int out_fd) -{ - int ret; - struct btrfs_trans_handle *trans; - struct stat root_st; - struct directory_name_entry dir_head; - struct directory_name_entry *dir_entry = NULL; - - ret = lstat(source_dir, &root_st); - if (ret) { - error("unable to lstat %s: %s", source_dir, strerror(errno)); - ret = -errno; - goto out; - } - - INIT_LIST_HEAD(&dir_head.list); - - trans = btrfs_start_transaction(root, 1); - ret = traverse_directory(trans, root, source_dir, &dir_head, out_fd); - if (ret) { - error("unable to traverse directory %s: %d", source_dir, ret); - goto fail; - } - ret = btrfs_commit_transaction(trans, root); - if (ret) { - error("transaction commit failed: %d", ret); - goto out; - } - - if (verbose) - printf("Making image is completed.\n"); - return 0; -fail: - while (!list_empty(&dir_head.list)) { - dir_entry = list_entry(dir_head.list.next, - struct directory_name_entry, list); - list_del(&dir_entry->list); - free(dir_entry); - } -out: - return ret; -} - -/* - * This ignores symlinks with unreadable targets and subdirs that can't - * be read. It's a best-effort to give a rough estimate of the size of - * a subdir. It doesn't guarantee that prepopulating btrfs from this - * tree won't still run out of space. - */ -static u64 global_total_size; -static u64 fs_block_size; -static int ftw_add_entry_size(const char *fpath, const struct stat *st, - int type) -{ - if (type == FTW_F || type == FTW_D) - global_total_size += round_up(st->st_size, fs_block_size); - - return 0; -} - -static u64 size_sourcedir(char *dir_name, u64 sectorsize, - u64 *num_of_meta_chunks_ret, u64 *size_of_data_ret) -{ - u64 dir_size = 0; - u64 total_size = 0; - int ret; - u64 default_chunk_size = 8 * 1024 * 1024; /* 8MB */ - u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */ - u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */ - u64 num_of_meta_chunks = 0; - u64 num_of_data_chunks = 0; - u64 num_of_allocated_meta_chunks = - allocated_meta_size / default_chunk_size; - - global_total_size = 0; - fs_block_size = sectorsize; - ret = ftw(dir_name, ftw_add_entry_size, 10); - dir_size = global_total_size; - if (ret < 0) { - error("ftw subdir walk of %s failed: %s", dir_name, - strerror(errno)); - exit(1); - } - - num_of_data_chunks = (dir_size + default_chunk_size - 1) / - default_chunk_size; - - num_of_meta_chunks = (dir_size / 2) / default_chunk_size; - if (((dir_size / 2) % default_chunk_size) != 0) - num_of_meta_chunks++; - if (num_of_meta_chunks <= num_of_allocated_meta_chunks) - num_of_meta_chunks = 0; - else - num_of_meta_chunks -= num_of_allocated_meta_chunks; - - total_size = allocated_total_size + - (num_of_data_chunks * default_chunk_size) + - (num_of_meta_chunks * default_chunk_size); - - *num_of_meta_chunks_ret = num_of_meta_chunks; - *size_of_data_ret = num_of_data_chunks * default_chunk_size; - return total_size; -} - -static int zero_output_file(int out_fd, u64 size) -{ - int loop_num; - u64 location = 0; - char buf[4096]; - int ret = 0, i; - ssize_t written; - - memset(buf, 0, 4096); - loop_num = size / 4096; - for (i = 0; i < loop_num; i++) { - written = pwrite64(out_fd, buf, 4096, location); - if (written != 4096) - ret = -EIO; - location += 4096; - } - return ret; -} - -static int is_ssd(const char *file) -{ - blkid_probe probe; - char wholedisk[PATH_MAX]; - char sysfs_path[PATH_MAX]; - dev_t devno; - int fd; - char rotational; - int ret; - - probe = blkid_new_probe_from_filename(file); - if (!probe) - return 0; - - /* Device number of this disk (possibly a partition) */ - devno = blkid_probe_get_devno(probe); - if (!devno) { - blkid_free_probe(probe); - return 0; - } - - /* Get whole disk name (not full path) for this devno */ - ret = blkid_devno_to_wholedisk(devno, - wholedisk, sizeof(wholedisk), NULL); - if (ret) { - blkid_free_probe(probe); - return 0; - } - - snprintf(sysfs_path, PATH_MAX, "/sys/block/%s/queue/rotational", - wholedisk); - - blkid_free_probe(probe); - - fd = open(sysfs_path, O_RDONLY); - if (fd < 0) { - return 0; - } - - if (read(fd, &rotational, 1) < 1) { - close(fd); - return 0; - } - close(fd); - - return rotational == '0'; -} - -static int _cmp_device_by_id(void *priv, struct list_head *a, - struct list_head *b) -{ - return list_entry(a, struct btrfs_device, dev_list)->devid - - list_entry(b, struct btrfs_device, dev_list)->devid; -} - -static void list_all_devices(struct btrfs_root *root) -{ - struct btrfs_fs_devices *fs_devices; - struct btrfs_device *device; - int number_of_devices = 0; - u64 total_block_count = 0; - - fs_devices = root->fs_info->fs_devices; - - list_for_each_entry(device, &fs_devices->devices, dev_list) - number_of_devices++; - - list_sort(NULL, &fs_devices->devices, _cmp_device_by_id); - - printf("Number of devices: %d\n", number_of_devices); - /* printf("Total devices size: %10s\n", */ - /* pretty_size(total_block_count)); */ - printf("Devices:\n"); - printf(" ID SIZE PATH\n"); - list_for_each_entry(device, &fs_devices->devices, dev_list) { - printf(" %3llu %10s %s\n", - device->devid, - pretty_size(device->total_bytes), - device->name); - total_block_count += device->total_bytes; - } - - printf("\n"); -} - -static int is_temp_block_group(struct extent_buffer *node, - struct btrfs_block_group_item *bgi, - u64 data_profile, u64 meta_profile, - u64 sys_profile) -{ - u64 flag = btrfs_disk_block_group_flags(node, bgi); - u64 flag_type = flag & BTRFS_BLOCK_GROUP_TYPE_MASK; - u64 flag_profile = flag & BTRFS_BLOCK_GROUP_PROFILE_MASK; - u64 used = btrfs_disk_block_group_used(node, bgi); - - /* - * Chunks meets all the following conditions is a temp chunk - * 1) Empty chunk - * Temp chunk is always empty. - * - * 2) profile mismatch with mkfs profile. - * Temp chunk is always in SINGLE - * - * 3) Size differs with mkfs_alloc - * Special case for SINGLE/SINGLE btrfs. - * In that case, temp data chunk and real data chunk are always empty. - * So we need to use mkfs_alloc to be sure which chunk is the newly - * allocated. - * - * Normally, new chunk size is equal to mkfs one (One chunk) - * If it has multiple chunks, we just refuse to delete any one. - * As they are all single, so no real problem will happen. - * So only use condition 1) and 2) to judge them. - */ - if (used != 0) - return 0; - switch (flag_type) { - case BTRFS_BLOCK_GROUP_DATA: - case BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA: - data_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK; - if (flag_profile != data_profile) - return 1; - break; - case BTRFS_BLOCK_GROUP_METADATA: - meta_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK; - if (flag_profile != meta_profile) - return 1; - break; - case BTRFS_BLOCK_GROUP_SYSTEM: - sys_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK; - if (flag_profile != sys_profile) - return 1; - break; - } - return 0; -} - -/* Note: if current is a block group, it will skip it anyway */ -static int next_block_group(struct btrfs_root *root, - struct btrfs_path *path) -{ - struct btrfs_key key; - int ret = 0; - - while (1) { - ret = btrfs_next_item(root, path); - if (ret) - goto out; - - btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]); - if (key.type == BTRFS_BLOCK_GROUP_ITEM_KEY) - goto out; - } -out: - return ret; -} - -/* This function will cleanup */ -static int cleanup_temp_chunks(struct btrfs_fs_info *fs_info, - struct mkfs_allocation *alloc, - u64 data_profile, u64 meta_profile, - u64 sys_profile) -{ - struct btrfs_trans_handle *trans = NULL; - struct btrfs_block_group_item *bgi; - struct btrfs_root *root = fs_info->extent_root; - struct btrfs_key key; - struct btrfs_key found_key; - struct btrfs_path *path; - int ret = 0; - - path = btrfs_alloc_path(); - if (!path) { - ret = -ENOMEM; - goto out; - } - - trans = btrfs_start_transaction(root, 1); - - key.objectid = 0; - key.type = BTRFS_BLOCK_GROUP_ITEM_KEY; - key.offset = 0; - - while (1) { - /* - * as the rest of the loop may modify the tree, we need to - * start a new search each time. - */ - ret = btrfs_search_slot(trans, root, &key, path, 0, 0); - if (ret < 0) - goto out; - - btrfs_item_key_to_cpu(path->nodes[0], &found_key, - path->slots[0]); - if (found_key.objectid < key.objectid) - goto out; - if (found_key.type != BTRFS_BLOCK_GROUP_ITEM_KEY) { - ret = next_block_group(root, path); - if (ret < 0) - goto out; - if (ret > 0) { - ret = 0; - goto out; - } - btrfs_item_key_to_cpu(path->nodes[0], &found_key, - path->slots[0]); - } - - bgi = btrfs_item_ptr(path->nodes[0], path->slots[0], - struct btrfs_block_group_item); - if (is_temp_block_group(path->nodes[0], bgi, - data_profile, meta_profile, - sys_profile)) { - u64 flags = btrfs_disk_block_group_flags(path->nodes[0], - bgi); - - ret = btrfs_free_block_group(trans, fs_info, - found_key.objectid, found_key.offset); - if (ret < 0) - goto out; - - if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) == - BTRFS_BLOCK_GROUP_DATA) - alloc->data -= found_key.offset; - else if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) == - BTRFS_BLOCK_GROUP_METADATA) - alloc->metadata -= found_key.offset; - else if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) == - BTRFS_BLOCK_GROUP_SYSTEM) - alloc->system -= found_key.offset; - else if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) == - (BTRFS_BLOCK_GROUP_METADATA | - BTRFS_BLOCK_GROUP_DATA)) - alloc->mixed -= found_key.offset; - } - btrfs_release_path(path); - key.objectid = found_key.objectid + found_key.offset; - } -out: - if (trans) - btrfs_commit_transaction(trans, root); - btrfs_free_path(path); - return ret; -} - -int main(int argc, char **argv) -{ - char *file; - struct btrfs_root *root; - struct btrfs_fs_info *fs_info; - struct btrfs_trans_handle *trans; - char *label = NULL; - u64 block_count = 0; - u64 dev_block_count = 0; - u64 blocks[7]; - u64 alloc_start = 0; - u64 metadata_profile = 0; - u64 data_profile = 0; - u32 nodesize = max_t(u32, sysconf(_SC_PAGESIZE), - BTRFS_MKFS_DEFAULT_NODE_SIZE); - u32 sectorsize = 4096; - u32 stripesize = 4096; - int zero_end = 1; - int fd; - int ret; - int i; - int mixed = 0; - int nodesize_forced = 0; - int data_profile_opt = 0; - int metadata_profile_opt = 0; - int discard = 1; - int ssd = 0; - int force_overwrite = 0; - char *source_dir = NULL; - int source_dir_set = 0; - u64 num_of_meta_chunks = 0; - u64 size_of_data = 0; - u64 source_dir_size = 0; - int dev_cnt = 0; - int saved_optind; - char fs_uuid[BTRFS_UUID_UNPARSED_SIZE] = { 0 }; - u64 features = BTRFS_MKFS_DEFAULT_FEATURES; - struct mkfs_allocation allocation = { 0 }; - struct btrfs_mkfs_config mkfs_cfg; - - while(1) { - int c; - static const struct option long_options[] = { - { "alloc-start", required_argument, NULL, 'A'}, - { "byte-count", required_argument, NULL, 'b' }, - { "force", no_argument, NULL, 'f' }, - { "leafsize", required_argument, NULL, 'l' }, - { "label", required_argument, NULL, 'L'}, - { "metadata", required_argument, NULL, 'm' }, - { "mixed", no_argument, NULL, 'M' }, - { "nodesize", required_argument, NULL, 'n' }, - { "sectorsize", required_argument, NULL, 's' }, - { "data", required_argument, NULL, 'd' }, - { "version", no_argument, NULL, 'V' }, - { "rootdir", required_argument, NULL, 'r' }, - { "nodiscard", no_argument, NULL, 'K' }, - { "features", required_argument, NULL, 'O' }, - { "uuid", required_argument, NULL, 'U' }, - { "quiet", 0, NULL, 'q' }, - { "help", no_argument, NULL, GETOPT_VAL_HELP }, - { NULL, 0, NULL, 0} - }; - - c = getopt_long(argc, argv, "A:b:fl:n:s:m:d:L:O:r:U:VMKq", - long_options, NULL); - if (c < 0) - break; - switch(c) { - case 'A': - alloc_start = parse_size(optarg); - break; - case 'f': - force_overwrite = 1; - break; - case 'd': - data_profile = parse_profile(optarg); - data_profile_opt = 1; - break; - case 'l': - warning("--leafsize is deprecated, use --nodesize"); - case 'n': - nodesize = parse_size(optarg); - nodesize_forced = 1; - break; - case 'L': - label = parse_label(optarg); - break; - case 'm': - metadata_profile = parse_profile(optarg); - metadata_profile_opt = 1; - break; - case 'M': - mixed = 1; - break; - case 'O': { - char *orig = strdup(optarg); - char *tmp = orig; - - tmp = btrfs_parse_fs_features(tmp, &features); - if (tmp) { - error("unrecognized filesystem feature '%s'", - tmp); - free(orig); - exit(1); - } - free(orig); - if (features & BTRFS_FEATURE_LIST_ALL) { - btrfs_list_all_fs_features(0); - exit(0); - } - break; - } - case 's': - sectorsize = parse_size(optarg); - break; - case 'b': - block_count = parse_size(optarg); - zero_end = 0; - break; - case 'V': - printf("mkfs.btrfs, part of %s\n", - PACKAGE_STRING); - exit(0); - break; - case 'r': - source_dir = optarg; - source_dir_set = 1; - break; - case 'U': - strncpy(fs_uuid, optarg, - BTRFS_UUID_UNPARSED_SIZE - 1); - break; - case 'K': - discard = 0; - break; - case 'q': - verbose = 0; - break; - case GETOPT_VAL_HELP: - default: - print_usage(c != GETOPT_VAL_HELP); - } - } - - if (verbose) { - printf("%s\n", PACKAGE_STRING); - printf("See %s for more information.\n\n", PACKAGE_URL); - } - - sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE)); - stripesize = sectorsize; - saved_optind = optind; - dev_cnt = argc - optind; - if (dev_cnt == 0) - print_usage(1); - - if (source_dir_set && dev_cnt > 1) { - error("the option -r is limited to a single device"); - exit(1); - } - - if (*fs_uuid) { - uuid_t dummy_uuid; - - if (uuid_parse(fs_uuid, dummy_uuid) != 0) { - error("could not parse UUID: %s", fs_uuid); - exit(1); - } - if (!test_uuid_unique(fs_uuid)) { - error("non-unique UUID: %s", fs_uuid); - exit(1); - } - } - - while (dev_cnt-- > 0) { - file = argv[optind++]; - if (is_block_device(file) == 1) - if (test_dev_for_mkfs(file, force_overwrite)) - exit(1); - } - - optind = saved_optind; - dev_cnt = argc - optind; - - file = argv[optind++]; - ssd = is_ssd(file); - - /* - * Set default profiles according to number of added devices. - * For mixed groups defaults are single/single. - */ - if (!mixed) { - if (!metadata_profile_opt) { - if (dev_cnt == 1 && ssd && verbose) - printf("Detected a SSD, turning off metadata " - "duplication. Mkfs with -m dup if you want to " - "force metadata duplication.\n"); - - metadata_profile = (dev_cnt > 1) ? - BTRFS_BLOCK_GROUP_RAID1 : (ssd) ? - 0: BTRFS_BLOCK_GROUP_DUP; - } - if (!data_profile_opt) { - data_profile = (dev_cnt > 1) ? - BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */ - } - } else { - u32 best_nodesize = max_t(u32, sysconf(_SC_PAGESIZE), sectorsize); - - if (metadata_profile_opt || data_profile_opt) { - if (metadata_profile != data_profile) { - error( - "with mixed block groups data and metadata profiles must be the same"); - exit(1); - } - } - - if (!nodesize_forced) - nodesize = best_nodesize; - } - - /* - * FS features that can be set by other means than -O - * just set the bit here - */ - if (mixed) - features |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS; - - if ((data_profile | metadata_profile) & - (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) { - features |= BTRFS_FEATURE_INCOMPAT_RAID56; - } - - if (btrfs_check_nodesize(nodesize, sectorsize, - features)) - exit(1); - - /* Check device/block_count after the nodesize is determined */ - if (block_count && block_count < btrfs_min_dev_size(nodesize)) { - error("size %llu is too small to make a usable filesystem", - block_count); - error("minimum size for btrfs filesystem is %llu", - btrfs_min_dev_size(nodesize)); - exit(1); - } - for (i = saved_optind; i < saved_optind + dev_cnt; i++) { - char *path; - - path = argv[i]; - ret = test_minimum_size(path, nodesize); - if (ret < 0) { - error("failed to check size for %s: %s", - path, strerror(-ret)); - exit (1); - } - if (ret > 0) { - error("'%s' is too small to make a usable filesystem", - path); - error("minimum size for each btrfs device is %llu", - btrfs_min_dev_size(nodesize)); - exit(1); - } - } - ret = test_num_disk_vs_raid(metadata_profile, data_profile, - dev_cnt, mixed, ssd); - if (ret) - exit(1); - - dev_cnt--; - - if (!source_dir_set) { - /* - * open without O_EXCL so that the problem should not - * occur by the following processing. - * (btrfs_register_one_device() fails if O_EXCL is on) - */ - fd = open(file, O_RDWR); - if (fd < 0) { - error("unable to open %s: %s", file, strerror(errno)); - exit(1); - } - ret = btrfs_prepare_device(fd, file, &dev_block_count, - block_count, - (zero_end ? PREP_DEVICE_ZERO_END : 0) | - (discard ? PREP_DEVICE_DISCARD : 0) | - (verbose ? PREP_DEVICE_VERBOSE : 0)); - if (ret) { - close(fd); - exit(1); - } - if (block_count && block_count > dev_block_count) { - error("%s is smaller than requested size, expected %llu, found %llu", - file, - (unsigned long long)block_count, - (unsigned long long)dev_block_count); - exit(1); - } - } else { - fd = open_target(file); - if (fd < 0) { - error("unable to open %s: %s", file, strerror(errno)); - exit(1); - } - - source_dir_size = size_sourcedir(source_dir, sectorsize, - &num_of_meta_chunks, &size_of_data); - if(block_count < source_dir_size) - block_count = source_dir_size; - ret = zero_output_file(fd, block_count); - if (ret) { - error("unable to zero the output file"); - exit(1); - } - /* our "device" is the new image file */ - dev_block_count = block_count; - } - - /* To create the first block group and chunk 0 in make_btrfs */ - if (dev_block_count < BTRFS_MKFS_SYSTEM_GROUP_SIZE) { - error("device is too small to make filesystem, must be at least %llu", - (unsigned long long)BTRFS_MKFS_SYSTEM_GROUP_SIZE); - exit(1); - } - - blocks[0] = BTRFS_SUPER_INFO_OFFSET; - for (i = 1; i < 7; i++) { - blocks[i] = BTRFS_SUPER_INFO_OFFSET + 1024 * 1024 + - nodesize * i; - } - - if (group_profile_max_safe_loss(metadata_profile) < - group_profile_max_safe_loss(data_profile)){ - warning("metadata has lower redundancy than data!\n"); - } - - mkfs_cfg.label = label; - memcpy(mkfs_cfg.fs_uuid, fs_uuid, sizeof(mkfs_cfg.fs_uuid)); - memcpy(mkfs_cfg.blocks, blocks, sizeof(blocks)); - mkfs_cfg.num_bytes = dev_block_count; - mkfs_cfg.nodesize = nodesize; - mkfs_cfg.sectorsize = sectorsize; - mkfs_cfg.stripesize = stripesize; - mkfs_cfg.features = features; - - ret = make_btrfs(fd, &mkfs_cfg, NULL); - if (ret) { - error("error during mkfs: %s", strerror(-ret)); - exit(1); - } - - fs_info = open_ctree_fs_info(file, 0, 0, 0, - OPEN_CTREE_WRITES | OPEN_CTREE_FS_PARTIAL); - if (!fs_info) { - error("open ctree failed"); - close(fd); - exit(1); - } - root = fs_info->fs_root; - fs_info->alloc_start = alloc_start; - - ret = create_metadata_block_groups(root, mixed, &allocation); - if (ret) { - error("failed to create default block groups: %d", ret); - exit(1); - } - - trans = btrfs_start_transaction(root, 1); - if (!trans) { - error("failed to start transaction"); - exit(1); - } - - ret = create_data_block_groups(trans, root, mixed, &allocation); - if (ret) { - error("failed to create default data block groups: %d", ret); - exit(1); - } - - ret = make_root_dir(trans, root, &allocation); - if (ret) { - error("failed to setup the root directory: %d", ret); - exit(1); - } - - ret = btrfs_commit_transaction(trans, root); - if (ret) { - error("unable to commit transaction: %d", ret); - goto out; - } - - trans = btrfs_start_transaction(root, 1); - if (!trans) { - error("failed to start transaction"); - exit(1); - } - - if (dev_cnt == 0) - goto raid_groups; - - while (dev_cnt-- > 0) { - file = argv[optind++]; - - /* - * open without O_EXCL so that the problem should not - * occur by the following processing. - * (btrfs_register_one_device() fails if O_EXCL is on) - */ - fd = open(file, O_RDWR); - if (fd < 0) { - error("unable to open %s: %s", file, strerror(errno)); - exit(1); - } - ret = btrfs_device_already_in_root(root, fd, - BTRFS_SUPER_INFO_OFFSET); - if (ret) { - error("skipping duplicate device %s in the filesystem", - file); - close(fd); - continue; - } - ret = btrfs_prepare_device(fd, file, &dev_block_count, - block_count, - (verbose ? PREP_DEVICE_VERBOSE : 0) | - (zero_end ? PREP_DEVICE_ZERO_END : 0) | - (discard ? PREP_DEVICE_DISCARD : 0)); - if (ret) { - close(fd); - exit(1); - } - - ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count, - sectorsize, sectorsize, sectorsize); - if (ret) { - error("unable to add %s to filesystem: %d", file, ret); - goto out; - } - if (verbose >= 2) { - struct btrfs_device *device; - - device = container_of(fs_info->fs_devices->devices.next, - struct btrfs_device, dev_list); - printf("adding device %s id %llu\n", file, - (unsigned long long)device->devid); - } - } - -raid_groups: - if (!source_dir_set) { - ret = create_raid_groups(trans, root, data_profile, - metadata_profile, mixed, &allocation); - if (ret) { - error("unable to create raid groups: %d", ret); - goto out; - } - } - - ret = create_data_reloc_tree(trans, root); - if (ret) { - error("unable to create data reloc tree: %d", ret); - goto out; - } - - ret = btrfs_commit_transaction(trans, root); - if (ret) { - error("unable to commit transaction: %d", ret); - goto out; - } - - if (source_dir_set) { - trans = btrfs_start_transaction(root, 1); - ret = create_chunks(trans, root, - num_of_meta_chunks, size_of_data, - &allocation); - if (ret) { - error("unable to create chunks: %d", ret); - goto out; - } - ret = btrfs_commit_transaction(trans, root); - if (ret) { - error("transaction commit failed: %d", ret); - goto out; - } - - ret = make_image(source_dir, root, fd); - if (ret) { - error("error wihle filling filesystem: %d", ret); - goto out; - } - } - ret = cleanup_temp_chunks(fs_info, &allocation, data_profile, - metadata_profile, metadata_profile); - if (ret < 0) { - error("failed to cleanup temporary chunks: %d", ret); - goto out; - } - - if (verbose) { - char features_buf[64]; - - printf("Label: %s\n", label); - printf("UUID: %s\n", fs_uuid); - printf("Node size: %u\n", nodesize); - printf("Sector size: %u\n", sectorsize); - printf("Filesystem size: %s\n", - pretty_size(btrfs_super_total_bytes(fs_info->super_copy))); - printf("Block group profiles:\n"); - if (allocation.data) - printf(" Data: %-8s %16s\n", - btrfs_group_profile_str(data_profile), - pretty_size(allocation.data)); - if (allocation.metadata) - printf(" Metadata: %-8s %16s\n", - btrfs_group_profile_str(metadata_profile), - pretty_size(allocation.metadata)); - if (allocation.mixed) - printf(" Data+Metadata: %-8s %16s\n", - btrfs_group_profile_str(data_profile), - pretty_size(allocation.mixed)); - printf(" System: %-8s %16s\n", - btrfs_group_profile_str(metadata_profile), - pretty_size(allocation.system)); - printf("SSD detected: %s\n", ssd ? "yes" : "no"); - btrfs_parse_features_to_string(features_buf, features); - printf("Incompat features: %s", features_buf); - printf("\n"); - - list_all_devices(root); - } - - /* - * The filesystem is now fully set up, commit the remaining changes and - * fix the signature as the last step before closing the devices. - */ - fs_info->finalize_on_close = 1; -out: - ret = close_ctree(root); - - if (!ret) { - optind = saved_optind; - dev_cnt = argc - optind; - while (dev_cnt-- > 0) { - file = argv[optind++]; - if (is_block_device(file) == 1) - btrfs_register_one_device(file); - } - } - - btrfs_close_all_devices(); - free(label); - - return !!ret; -} -- cgit v1.2.3