mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-16 19:35:38 +00:00
d34f9faf60
Add option to silecne mkfs and print only errors, warnings or info on user request like features or help. Based on patch from Goffredo Baroncelli <kreijack@inwind.it> Signed-off-by: David Sterba <dsterba@suse.cz>
1564 lines
39 KiB
C
1564 lines
39 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include "kerncompat.h"
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include "ioctl.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/dir.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <uuid/uuid.h>
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#include <ctype.h>
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#include <sys/xattr.h>
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#include <limits.h>
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#include <linux/limits.h>
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#include <blkid/blkid.h>
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#include <ftw.h>
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#include "ctree.h"
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#include "disk-io.h"
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#include "volumes.h"
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#include "transaction.h"
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#include "utils.h"
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static u64 index_cnt = 2;
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static int verbose = 1;
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struct directory_name_entry {
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char *dir_name;
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char *path;
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ino_t inum;
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struct list_head list;
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};
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static int make_root_dir(struct btrfs_root *root, int mixed)
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{
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struct btrfs_trans_handle *trans;
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struct btrfs_key location;
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u64 bytes_used;
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u64 chunk_start = 0;
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u64 chunk_size = 0;
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int ret;
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trans = btrfs_start_transaction(root, 1);
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bytes_used = btrfs_super_bytes_used(root->fs_info->super_copy);
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root->fs_info->system_allocs = 1;
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ret = btrfs_make_block_group(trans, root, bytes_used,
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BTRFS_BLOCK_GROUP_SYSTEM,
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BTRFS_FIRST_CHUNK_TREE_OBJECTID,
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0, BTRFS_MKFS_SYSTEM_GROUP_SIZE);
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BUG_ON(ret);
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if (mixed) {
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ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
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&chunk_start, &chunk_size,
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BTRFS_BLOCK_GROUP_METADATA |
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BTRFS_BLOCK_GROUP_DATA);
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if (ret == -ENOSPC) {
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fprintf(stderr,
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"no space to alloc data/metadata chunk\n");
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goto err;
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}
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BUG_ON(ret);
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ret = btrfs_make_block_group(trans, root, 0,
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BTRFS_BLOCK_GROUP_METADATA |
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BTRFS_BLOCK_GROUP_DATA,
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BTRFS_FIRST_CHUNK_TREE_OBJECTID,
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chunk_start, chunk_size);
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BUG_ON(ret);
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if (verbose)
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printf("Created a data/metadata chunk of size %llu\n",
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chunk_size);
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} else {
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ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
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&chunk_start, &chunk_size,
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BTRFS_BLOCK_GROUP_METADATA);
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if (ret == -ENOSPC) {
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fprintf(stderr, "no space to alloc metadata chunk\n");
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goto err;
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}
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BUG_ON(ret);
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ret = btrfs_make_block_group(trans, root, 0,
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BTRFS_BLOCK_GROUP_METADATA,
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BTRFS_FIRST_CHUNK_TREE_OBJECTID,
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chunk_start, chunk_size);
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BUG_ON(ret);
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}
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root->fs_info->system_allocs = 0;
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btrfs_commit_transaction(trans, root);
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trans = btrfs_start_transaction(root, 1);
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BUG_ON(!trans);
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if (!mixed) {
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ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
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&chunk_start, &chunk_size,
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BTRFS_BLOCK_GROUP_DATA);
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if (ret == -ENOSPC) {
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fprintf(stderr, "no space to alloc data chunk\n");
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goto err;
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}
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BUG_ON(ret);
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ret = btrfs_make_block_group(trans, root, 0,
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BTRFS_BLOCK_GROUP_DATA,
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BTRFS_FIRST_CHUNK_TREE_OBJECTID,
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chunk_start, chunk_size);
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BUG_ON(ret);
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}
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ret = btrfs_make_root_dir(trans, root->fs_info->tree_root,
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BTRFS_ROOT_TREE_DIR_OBJECTID);
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if (ret)
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goto err;
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ret = btrfs_make_root_dir(trans, root, BTRFS_FIRST_FREE_OBJECTID);
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if (ret)
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goto err;
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memcpy(&location, &root->fs_info->fs_root->root_key, sizeof(location));
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location.offset = (u64)-1;
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ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
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"default", 7,
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btrfs_super_root_dir(root->fs_info->super_copy),
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&location, BTRFS_FT_DIR, 0);
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if (ret)
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goto err;
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ret = btrfs_insert_inode_ref(trans, root->fs_info->tree_root,
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"default", 7, location.objectid,
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BTRFS_ROOT_TREE_DIR_OBJECTID, 0);
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if (ret)
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goto err;
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btrfs_commit_transaction(trans, root);
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err:
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return ret;
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}
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static void __recow_root(struct btrfs_trans_handle *trans,
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struct btrfs_root *root)
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{
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int ret;
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struct extent_buffer *tmp;
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if (trans->transid != btrfs_root_generation(&root->root_item)) {
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extent_buffer_get(root->node);
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ret = __btrfs_cow_block(trans, root, root->node,
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NULL, 0, &tmp, 0, 0);
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BUG_ON(ret);
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free_extent_buffer(tmp);
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}
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}
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static void recow_roots(struct btrfs_trans_handle *trans,
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struct btrfs_root *root)
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{
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struct btrfs_fs_info *info = root->fs_info;
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__recow_root(trans, info->fs_root);
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__recow_root(trans, info->tree_root);
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__recow_root(trans, info->extent_root);
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__recow_root(trans, info->chunk_root);
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__recow_root(trans, info->dev_root);
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__recow_root(trans, info->csum_root);
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}
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static int create_one_raid_group(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 type)
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{
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u64 chunk_start;
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u64 chunk_size;
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int ret;
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ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
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&chunk_start, &chunk_size, type);
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if (ret == -ENOSPC) {
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fprintf(stderr, "not enough free space\n");
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exit(1);
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}
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BUG_ON(ret);
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ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
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type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
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chunk_start, chunk_size);
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BUG_ON(ret);
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return ret;
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}
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static int create_raid_groups(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 data_profile,
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int data_profile_opt, u64 metadata_profile,
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int mixed)
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{
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u64 num_devices = btrfs_super_num_devices(root->fs_info->super_copy);
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int ret;
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if (metadata_profile) {
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u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA;
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ret = create_one_raid_group(trans, root,
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BTRFS_BLOCK_GROUP_SYSTEM |
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metadata_profile);
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BUG_ON(ret);
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if (mixed)
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meta_flags |= BTRFS_BLOCK_GROUP_DATA;
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ret = create_one_raid_group(trans, root, meta_flags |
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metadata_profile);
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BUG_ON(ret);
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}
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if (!mixed && num_devices > 1 && data_profile) {
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ret = create_one_raid_group(trans, root,
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BTRFS_BLOCK_GROUP_DATA |
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data_profile);
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BUG_ON(ret);
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}
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recow_roots(trans, root);
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return 0;
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}
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static int create_data_reloc_tree(struct btrfs_trans_handle *trans,
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struct btrfs_root *root)
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{
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struct btrfs_key location;
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struct btrfs_root_item root_item;
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struct extent_buffer *tmp;
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u64 objectid = BTRFS_DATA_RELOC_TREE_OBJECTID;
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int ret;
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ret = btrfs_copy_root(trans, root, root->node, &tmp, objectid);
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BUG_ON(ret);
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memcpy(&root_item, &root->root_item, sizeof(root_item));
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btrfs_set_root_bytenr(&root_item, tmp->start);
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btrfs_set_root_level(&root_item, btrfs_header_level(tmp));
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btrfs_set_root_generation(&root_item, trans->transid);
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free_extent_buffer(tmp);
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location.objectid = objectid;
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location.type = BTRFS_ROOT_ITEM_KEY;
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location.offset = 0;
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ret = btrfs_insert_root(trans, root->fs_info->tree_root,
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&location, &root_item);
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BUG_ON(ret);
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return 0;
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}
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static void print_usage(void) __attribute__((noreturn));
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static void print_usage(void)
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{
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fprintf(stderr, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
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fprintf(stderr, "options:\n");
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fprintf(stderr, "\t-A|--alloc-start START the offset to start the FS\n");
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fprintf(stderr, "\t-b|--byte-count SIZE total number of bytes in the FS\n");
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fprintf(stderr, "\t-d|--data PROFILE data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
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fprintf(stderr, "\t-f|--force force overwrite of existing filesystem\n");
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fprintf(stderr, "\t-l|--leafsize SIZE deprecated, alias for nodesize\n");
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fprintf(stderr, "\t-L|--label LABEL set a label\n");
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fprintf(stderr, "\t-m|--metadata PROFILE metadata profile, values like data profile\n");
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fprintf(stderr, "\t-M|--mixed mix metadata and data together\n");
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fprintf(stderr, "\t-n|--nodesize SIZE size of btree nodes\n");
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fprintf(stderr, "\t-s|--sectorsize SIZE min block allocation (may not mountable by current kernel)\n");
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fprintf(stderr, "\t-r|--rootdir DIR the source directory\n");
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fprintf(stderr, "\t-K|--nodiscard do not perform whole device TRIM\n");
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fprintf(stderr, "\t-O|--features LIST comma separated list of filesystem features, use '-O list-all' to list features\n");
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fprintf(stderr, "\t-U|--uuid UUID specify the filesystem UUID\n");
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fprintf(stderr, "\t-q|--quiet no messages except errors\n");
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fprintf(stderr, "\t-V|--version print the mkfs.btrfs version and exit\n");
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fprintf(stderr, "%s\n", PACKAGE_STRING);
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exit(1);
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}
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static void print_version(void) __attribute__((noreturn));
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static void print_version(void)
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{
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fprintf(stderr, "mkfs.btrfs, part of %s\n", PACKAGE_STRING);
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exit(0);
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}
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static u64 parse_profile(char *s)
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{
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if (strcmp(s, "raid0") == 0) {
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return BTRFS_BLOCK_GROUP_RAID0;
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} else if (strcmp(s, "raid1") == 0) {
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return BTRFS_BLOCK_GROUP_RAID1;
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} else if (strcmp(s, "raid5") == 0) {
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return BTRFS_BLOCK_GROUP_RAID5;
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} else if (strcmp(s, "raid6") == 0) {
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return BTRFS_BLOCK_GROUP_RAID6;
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} else if (strcmp(s, "raid10") == 0) {
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return BTRFS_BLOCK_GROUP_RAID10;
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} else if (strcmp(s, "dup") == 0) {
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return BTRFS_BLOCK_GROUP_DUP;
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} else if (strcmp(s, "single") == 0) {
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return 0;
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} else {
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fprintf(stderr, "Unknown profile %s\n", s);
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print_usage();
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}
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/* not reached */
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return 0;
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}
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static char *parse_label(char *input)
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{
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int len = strlen(input);
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if (len >= BTRFS_LABEL_SIZE) {
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fprintf(stderr, "Label %s is too long (max %d)\n", input,
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BTRFS_LABEL_SIZE - 1);
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exit(1);
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}
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return strdup(input);
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}
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static int add_directory_items(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 objectid,
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ino_t parent_inum, const char *name,
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struct stat *st, int *dir_index_cnt)
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{
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int ret;
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int name_len;
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struct btrfs_key location;
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u8 filetype = 0;
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name_len = strlen(name);
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location.objectid = objectid;
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location.offset = 0;
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btrfs_set_key_type(&location, BTRFS_INODE_ITEM_KEY);
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if (S_ISDIR(st->st_mode))
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filetype = BTRFS_FT_DIR;
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if (S_ISREG(st->st_mode))
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filetype = BTRFS_FT_REG_FILE;
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if (S_ISLNK(st->st_mode))
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filetype = BTRFS_FT_SYMLINK;
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ret = btrfs_insert_dir_item(trans, root, name, name_len,
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parent_inum, &location,
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filetype, index_cnt);
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if (ret)
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return ret;
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ret = btrfs_insert_inode_ref(trans, root, name, name_len,
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objectid, parent_inum, index_cnt);
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*dir_index_cnt = index_cnt;
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index_cnt++;
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return ret;
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}
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static int fill_inode_item(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_inode_item *dst, struct stat *src)
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{
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u64 blocks = 0;
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u64 sectorsize = root->sectorsize;
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/*
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* btrfs_inode_item has some reserved fields
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* and represents on-disk inode entry, so
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* zero everything to prevent information leak
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*/
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memset(dst, 0, sizeof (*dst));
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btrfs_set_stack_inode_generation(dst, trans->transid);
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btrfs_set_stack_inode_size(dst, src->st_size);
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btrfs_set_stack_inode_nbytes(dst, 0);
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btrfs_set_stack_inode_block_group(dst, 0);
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btrfs_set_stack_inode_nlink(dst, src->st_nlink);
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btrfs_set_stack_inode_uid(dst, src->st_uid);
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btrfs_set_stack_inode_gid(dst, src->st_gid);
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btrfs_set_stack_inode_mode(dst, src->st_mode);
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btrfs_set_stack_inode_rdev(dst, 0);
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btrfs_set_stack_inode_flags(dst, 0);
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btrfs_set_stack_timespec_sec(&dst->atime, src->st_atime);
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btrfs_set_stack_timespec_nsec(&dst->atime, 0);
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btrfs_set_stack_timespec_sec(&dst->ctime, src->st_ctime);
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btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
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btrfs_set_stack_timespec_sec(&dst->mtime, src->st_mtime);
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btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
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btrfs_set_stack_timespec_sec(&dst->otime, 0);
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btrfs_set_stack_timespec_nsec(&dst->otime, 0);
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|
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if (S_ISDIR(src->st_mode)) {
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btrfs_set_stack_inode_size(dst, 0);
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btrfs_set_stack_inode_nlink(dst, 1);
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}
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if (S_ISREG(src->st_mode)) {
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btrfs_set_stack_inode_size(dst, (u64)src->st_size);
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if (src->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root))
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btrfs_set_stack_inode_nbytes(dst, src->st_size);
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else {
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blocks = src->st_size / sectorsize;
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if (src->st_size % sectorsize)
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blocks += 1;
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blocks *= sectorsize;
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btrfs_set_stack_inode_nbytes(dst, blocks);
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}
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}
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if (S_ISLNK(src->st_mode))
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btrfs_set_stack_inode_nbytes(dst, src->st_size + 1);
|
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|
|
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))
|
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return 0;
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|
else
|
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return 1;
|
|
}
|
|
|
|
static void free_namelist(struct direct **files, int count)
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|
{
|
|
int i;
|
|
|
|
if (count < 0)
|
|
return;
|
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|
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for (i = 0; i < count; ++i)
|
|
free(files[i]);
|
|
free(files);
|
|
}
|
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|
|
static u64 calculate_dir_inode_size(char *dirname)
|
|
{
|
|
int count, i;
|
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struct direct **files, *cur_file;
|
|
u64 dir_inode_size = 0;
|
|
|
|
count = scandir(dirname, &files, directory_select, NULL);
|
|
|
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for (i = 0; i < count; i++) {
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|
cur_file = files[i];
|
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dir_inode_size += strlen(cur_file->d_name);
|
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}
|
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|
|
free_namelist(files, count);
|
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|
|
dir_inode_size *= 2;
|
|
return dir_inode_size;
|
|
}
|
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|
|
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;
|
|
fprintf(stderr, "get a list of xattr failed for %s\n",
|
|
file_name);
|
|
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;
|
|
fprintf(stderr, "get a xattr value failed for %s attr %s\n",
|
|
file_name, cur_name);
|
|
return ret;
|
|
}
|
|
|
|
ret = btrfs_insert_xattr_item(trans, root, cur_name,
|
|
cur_name_len, cur_value,
|
|
ret, objectid);
|
|
if (ret) {
|
|
fprintf(stderr, "insert a xattr item failed for %s\n",
|
|
file_name);
|
|
}
|
|
|
|
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;
|
|
u64 sectorsize = root->sectorsize;
|
|
char *buf = malloc(sectorsize);
|
|
|
|
ret = readlink(path_name, buf, sectorsize);
|
|
if (ret <= 0) {
|
|
fprintf(stderr, "readlink failed for %s\n", path_name);
|
|
goto fail;
|
|
}
|
|
if (ret >= sectorsize) {
|
|
fprintf(stderr, "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:
|
|
free(buf);
|
|
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) {
|
|
fprintf(stderr, "%s open failed\n", path_name);
|
|
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);
|
|
ret_read = pread64(fd, buffer, st->st_size, bytes_read);
|
|
if (ret_read == -1) {
|
|
fprintf(stderr, "%s read failed\n", path_name);
|
|
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 = malloc(sizeof(*eb) + sectorsize);
|
|
if (!eb) {
|
|
ret = -ENOMEM;
|
|
goto end;
|
|
}
|
|
memset(eb, 0, sizeof(*eb) + sectorsize);
|
|
|
|
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) {
|
|
fprintf(stderr, "%s read failed\n", path_name);
|
|
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) {
|
|
fprintf(stderr, "output file write failed\n");
|
|
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));
|
|
dir_entry->dir_name = dir_name;
|
|
dir_entry->path = realpath(dir_name, real_path);
|
|
if (!dir_entry->path) {
|
|
fprintf(stderr, "get directory real path error\n");
|
|
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) {
|
|
fprintf(stderr, "root dir lookup error\n");
|
|
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)) {
|
|
fprintf(stderr, "chdir error for %s\n",
|
|
parent_dir_name);
|
|
ret = -1;
|
|
goto fail_no_files;
|
|
}
|
|
|
|
count = scandir(parent_dir_entry->path, &files,
|
|
directory_select, NULL);
|
|
if (count == -1)
|
|
{
|
|
fprintf(stderr, "scandir for %s failed: %s\n",
|
|
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) {
|
|
fprintf(stderr, "lstat failed for file %s\n",
|
|
cur_file->d_name);
|
|
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) {
|
|
fprintf(stderr, "add_directory_items failed\n");
|
|
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) {
|
|
BUG_ON(st.st_nlink <= 1);
|
|
continue;
|
|
}
|
|
if (ret) {
|
|
fprintf(stderr, "add_inode_items failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
ret = add_xattr_item(trans, root,
|
|
cur_inum, cur_file->d_name);
|
|
if (ret) {
|
|
fprintf(stderr, "add_xattr_item failed\n");
|
|
if(ret != -ENOTSUP)
|
|
goto fail;
|
|
}
|
|
|
|
if (S_ISDIR(st.st_mode)) {
|
|
dir_entry = malloc(sizeof(struct directory_name_entry));
|
|
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) {
|
|
fprintf(stderr, "add_file_items failed\n");
|
|
goto fail;
|
|
}
|
|
} else if (S_ISLNK(st.st_mode)) {
|
|
ret = add_symbolic_link(trans, root,
|
|
cur_inum, cur_file->d_name);
|
|
if (ret) {
|
|
fprintf(stderr, "add_symbolic_link failed\n");
|
|
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 | O_TRUNC,
|
|
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)
|
|
{
|
|
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);
|
|
BUG_ON(ret);
|
|
ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
|
|
meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
|
|
chunk_start, chunk_size);
|
|
BUG_ON(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);
|
|
BUG_ON(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);
|
|
BUG_ON(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) {
|
|
fprintf(stderr, "unable to lstat the %s\n", source_dir);
|
|
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) {
|
|
fprintf(stderr, "unable to traverse_directory\n");
|
|
goto fail;
|
|
}
|
|
btrfs_commit_transaction(trans, root);
|
|
|
|
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:
|
|
fprintf(stderr, "Making image is aborted.\n");
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* The rounding up to 4096 is questionable. Previous code used du -B 4096.
|
|
*/
|
|
static u64 global_total_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, 4096);
|
|
|
|
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;
|
|
ret = ftw(dir_name, ftw_add_entry_size, 10);
|
|
dir_size = global_total_size;
|
|
if (ret < 0) {
|
|
fprintf(stderr, "ftw subdir walk of '%s' failed: %s\n",
|
|
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, u32 sectorsize)
|
|
{
|
|
int len = sectorsize;
|
|
int loop_num = size / sectorsize;
|
|
u64 location = 0;
|
|
char *buf = malloc(len);
|
|
int ret = 0, i;
|
|
ssize_t written;
|
|
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
memset(buf, 0, len);
|
|
for (i = 0; i < loop_num; i++) {
|
|
written = pwrite64(out_fd, buf, len, location);
|
|
if (written != len)
|
|
ret = -EIO;
|
|
location += sectorsize;
|
|
}
|
|
free(buf);
|
|
return ret;
|
|
}
|
|
|
|
static int is_ssd(const char *file)
|
|
{
|
|
blkid_probe probe;
|
|
char wholedisk[32];
|
|
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, sizeof(char)) < sizeof(char)) {
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
close(fd);
|
|
|
|
return !atoi((const char *)&rotational);
|
|
}
|
|
|
|
int main(int ac, char **av)
|
|
{
|
|
char *file;
|
|
struct btrfs_root *root;
|
|
struct btrfs_trans_handle *trans;
|
|
char *label = NULL;
|
|
char *first_file;
|
|
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 estr[100];
|
|
char *fs_uuid = NULL;
|
|
u64 features = BTRFS_MKFS_DEFAULT_FEATURES;
|
|
|
|
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' },
|
|
{ NULL, 0, NULL, 0}
|
|
};
|
|
|
|
c = getopt_long(ac, av, "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':
|
|
fprintf(stderr,
|
|
"WARNING: --leafsize is deprecated, use --nodesize\n");
|
|
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) {
|
|
fprintf(stderr,
|
|
"Unrecognized filesystem feature '%s'\n",
|
|
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);
|
|
if (block_count <= BTRFS_MKFS_SMALL_VOLUME_SIZE)
|
|
mixed = 1;
|
|
zero_end = 0;
|
|
break;
|
|
case 'V':
|
|
print_version();
|
|
break;
|
|
case 'r':
|
|
source_dir = optarg;
|
|
source_dir_set = 1;
|
|
break;
|
|
case 'U':
|
|
fs_uuid = optarg;
|
|
break;
|
|
case 'K':
|
|
discard = 0;
|
|
break;
|
|
case 'q':
|
|
verbose = 0;
|
|
break;
|
|
default:
|
|
print_usage();
|
|
}
|
|
}
|
|
sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE));
|
|
if (btrfs_check_nodesize(nodesize, sectorsize))
|
|
exit(1);
|
|
saved_optind = optind;
|
|
dev_cnt = ac - optind;
|
|
if (dev_cnt == 0)
|
|
print_usage();
|
|
|
|
if (source_dir_set && dev_cnt > 1) {
|
|
fprintf(stderr,
|
|
"The -r option is limited to a single device\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (fs_uuid) {
|
|
uuid_t dummy_uuid;
|
|
|
|
if (uuid_parse(fs_uuid, dummy_uuid) != 0) {
|
|
fprintf(stderr, "could not parse UUID: %s\n", fs_uuid);
|
|
exit(1);
|
|
}
|
|
if (!test_uuid_unique(fs_uuid)) {
|
|
fprintf(stderr, "non-unique UUID: %s\n", fs_uuid);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
while (dev_cnt-- > 0) {
|
|
file = av[optind++];
|
|
if (is_block_device(file))
|
|
if (test_dev_for_mkfs(file, force_overwrite, estr)) {
|
|
fprintf(stderr, "Error: %s", estr);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
optind = saved_optind;
|
|
dev_cnt = ac - optind;
|
|
|
|
file = av[optind++];
|
|
ssd = is_ssd(file);
|
|
|
|
if (is_vol_small(file) || mixed) {
|
|
if (verbose)
|
|
printf("SMALL VOLUME: forcing mixed metadata/data groups\n");
|
|
mixed = 1;
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
fprintf(stderr,
|
|
"ERROR: With mixed block groups data and metadata profiles must be the same\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (!nodesize_forced) {
|
|
nodesize = best_nodesize;
|
|
if (btrfs_check_nodesize(nodesize, sectorsize))
|
|
exit(1);
|
|
}
|
|
if (nodesize != sectorsize) {
|
|
fprintf(stderr, "Error: mixed metadata/data block groups "
|
|
"require metadata blocksizes equal to the sectorsize\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Check device/block_count after the nodesize is determined */
|
|
if (block_count && block_count < btrfs_min_dev_size(nodesize)) {
|
|
fprintf(stderr,
|
|
"Size '%llu' is too small to make a usable filesystem\n",
|
|
block_count);
|
|
fprintf(stderr,
|
|
"Minimum size for btrfs filesystem is %llu\n",
|
|
btrfs_min_dev_size(nodesize));
|
|
exit(1);
|
|
}
|
|
for (i = saved_optind; i < saved_optind + dev_cnt; i++) {
|
|
char *path;
|
|
|
|
path = av[i];
|
|
ret = test_minimum_size(path, nodesize);
|
|
if (ret < 0) {
|
|
fprintf(stderr, "Failed to check size for '%s': %s\n",
|
|
path, strerror(-ret));
|
|
exit (1);
|
|
}
|
|
if (ret > 0) {
|
|
fprintf(stderr,
|
|
"'%s' is too small to make a usable filesystem\n",
|
|
path);
|
|
fprintf(stderr,
|
|
"Minimum size for each btrfs device is %llu.\n",
|
|
btrfs_min_dev_size(nodesize));
|
|
exit(1);
|
|
}
|
|
}
|
|
ret = test_num_disk_vs_raid(metadata_profile, data_profile,
|
|
dev_cnt, mixed, estr);
|
|
if (ret) {
|
|
fprintf(stderr, "Error: %s\n", estr);
|
|
exit(1);
|
|
}
|
|
|
|
/* if we are here that means all devs are good to btrfsify */
|
|
if (verbose) {
|
|
printf("%s\n", PACKAGE_STRING);
|
|
printf("See %s for more information.\n\n", PACKAGE_URL);
|
|
}
|
|
|
|
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) {
|
|
fprintf(stderr, "unable to open %s: %s\n", file,
|
|
strerror(errno));
|
|
exit(1);
|
|
}
|
|
first_file = file;
|
|
ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
|
|
block_count, &mixed, discard);
|
|
if (ret) {
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
if (block_count && block_count > dev_block_count) {
|
|
fprintf(stderr, "%s is smaller than requested size\n", file);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
fd = open_target(file);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "unable to open the %s\n", file);
|
|
exit(1);
|
|
}
|
|
|
|
first_file = file;
|
|
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, sectorsize);
|
|
if (ret) {
|
|
fprintf(stderr, "unable to zero the output file\n");
|
|
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) {
|
|
fprintf(stderr, "device is too small to make filesystem\n");
|
|
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)){
|
|
fprintf(stderr,
|
|
"WARNING: metatdata has lower redundancy than data!\n\n");
|
|
}
|
|
|
|
/*
|
|
* 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 (verbose)
|
|
btrfs_process_fs_features(features);
|
|
|
|
ret = make_btrfs(fd, file, label, fs_uuid, blocks, dev_block_count,
|
|
nodesize, sectorsize, stripesize, features);
|
|
if (ret) {
|
|
fprintf(stderr, "error during mkfs: %s\n", strerror(-ret));
|
|
exit(1);
|
|
}
|
|
|
|
root = open_ctree(file, 0, OPEN_CTREE_WRITES);
|
|
if (!root) {
|
|
fprintf(stderr, "Open ctree failed\n");
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
root->fs_info->alloc_start = alloc_start;
|
|
|
|
ret = make_root_dir(root, mixed);
|
|
if (ret) {
|
|
fprintf(stderr, "failed to setup the root directory\n");
|
|
exit(1);
|
|
}
|
|
|
|
trans = btrfs_start_transaction(root, 1);
|
|
|
|
btrfs_register_one_device(file);
|
|
|
|
if (dev_cnt == 0)
|
|
goto raid_groups;
|
|
|
|
while (dev_cnt-- > 0) {
|
|
int old_mixed = mixed;
|
|
|
|
file = av[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) {
|
|
fprintf(stderr, "unable to open %s: %s\n", file,
|
|
strerror(errno));
|
|
exit(1);
|
|
}
|
|
ret = btrfs_device_already_in_root(root, fd,
|
|
BTRFS_SUPER_INFO_OFFSET);
|
|
if (ret) {
|
|
fprintf(stderr, "skipping duplicate device %s in FS\n",
|
|
file);
|
|
close(fd);
|
|
continue;
|
|
}
|
|
ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
|
|
block_count, &mixed, discard);
|
|
if (ret) {
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
mixed = old_mixed;
|
|
|
|
ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
|
|
sectorsize, sectorsize, sectorsize);
|
|
BUG_ON(ret);
|
|
btrfs_register_one_device(file);
|
|
}
|
|
|
|
raid_groups:
|
|
if (!source_dir_set) {
|
|
ret = create_raid_groups(trans, root, data_profile,
|
|
data_profile_opt, metadata_profile,
|
|
mixed);
|
|
BUG_ON(ret);
|
|
}
|
|
|
|
ret = create_data_reloc_tree(trans, root);
|
|
BUG_ON(ret);
|
|
|
|
if (verbose) {
|
|
printf(
|
|
"fs created label %s on %s\n\tnodesize %u leafsize %u sectorsize %u size %s\n",
|
|
label, first_file, nodesize, nodesize, sectorsize,
|
|
pretty_size(btrfs_super_total_bytes(root->fs_info->super_copy)));
|
|
}
|
|
|
|
btrfs_commit_transaction(trans, root);
|
|
|
|
if (source_dir_set) {
|
|
trans = btrfs_start_transaction(root, 1);
|
|
ret = create_chunks(trans, root,
|
|
num_of_meta_chunks, size_of_data);
|
|
BUG_ON(ret);
|
|
btrfs_commit_transaction(trans, root);
|
|
|
|
ret = make_image(source_dir, root, fd);
|
|
BUG_ON(ret);
|
|
}
|
|
|
|
ret = close_ctree(root);
|
|
BUG_ON(ret);
|
|
free(label);
|
|
return 0;
|
|
}
|