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-rw-r--r--mkfs.c1953
1 files changed, 0 insertions, 1953 deletions
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 <sys/ioctl.h>
-#include <sys/mount.h>
-#include "ioctl.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-/* #include <sys/dir.h> included via androidcompat.h */
-#include <fcntl.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <uuid/uuid.h>
-#include <ctype.h>
-#include <sys/xattr.h>
-#include <limits.h>
-#include <linux/limits.h>
-#include <blkid/blkid.h>
-#include <ftw.h>
-#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;
-}