#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 "list_sort.h"
#include "help.h"
#include "mkfs/common.h"
+#include "mkfs/rootdir.h"
#include "fsfeatures.h"
-static u64 index_cnt = 2;
static int verbose = 1;
-struct directory_name_entry {
- const char *dir_name;
- const char *path;
- ino_t inum;
- struct list_head list;
-};
-
struct mkfs_allocation {
u64 data;
u64 metadata;
static int create_metadata_block_groups(struct btrfs_root *root, int mixed,
struct mkfs_allocation *allocation)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_trans_handle *trans;
u64 bytes_used;
u64 chunk_start = 0;
int ret;
trans = btrfs_start_transaction(root, 1);
- bytes_used = btrfs_super_bytes_used(root->fs_info->super_copy);
+ BUG_ON(IS_ERR(trans));
+ bytes_used = btrfs_super_bytes_used(fs_info->super_copy);
root->fs_info->system_allocs = 1;
- ret = btrfs_make_block_group(trans, root, bytes_used,
+ ret = btrfs_make_block_group(trans, fs_info, bytes_used,
BTRFS_BLOCK_GROUP_SYSTEM,
BTRFS_FIRST_CHUNK_TREE_OBJECTID,
0, BTRFS_MKFS_SYSTEM_GROUP_SIZE);
return ret;
if (mixed) {
- ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ ret = btrfs_alloc_chunk(trans, fs_info,
&chunk_start, &chunk_size,
BTRFS_BLOCK_GROUP_METADATA |
BTRFS_BLOCK_GROUP_DATA);
}
if (ret)
return ret;
- ret = btrfs_make_block_group(trans, root, 0,
+ ret = btrfs_make_block_group(trans, fs_info, 0,
BTRFS_BLOCK_GROUP_METADATA |
BTRFS_BLOCK_GROUP_DATA,
BTRFS_FIRST_CHUNK_TREE_OBJECTID,
return ret;
allocation->mixed += chunk_size;
} else {
- ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ ret = btrfs_alloc_chunk(trans, fs_info,
&chunk_start, &chunk_size,
BTRFS_BLOCK_GROUP_METADATA);
if (ret == -ENOSPC) {
}
if (ret)
return ret;
- ret = btrfs_make_block_group(trans, root, 0,
+ ret = btrfs_make_block_group(trans, fs_info, 0,
BTRFS_BLOCK_GROUP_METADATA,
BTRFS_FIRST_CHUNK_TREE_OBJECTID,
chunk_start, chunk_size);
struct btrfs_root *root, int mixed,
struct mkfs_allocation *allocation)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
u64 chunk_start = 0;
u64 chunk_size = 0;
int ret = 0;
if (!mixed) {
- ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ ret = btrfs_alloc_chunk(trans, fs_info,
&chunk_start, &chunk_size,
BTRFS_BLOCK_GROUP_DATA);
if (ret == -ENOSPC) {
}
if (ret)
return ret;
- ret = btrfs_make_block_group(trans, root, 0,
+ ret = btrfs_make_block_group(trans, fs_info, 0,
BTRFS_BLOCK_GROUP_DATA,
BTRFS_FIRST_CHUNK_TREE_OBJECTID,
chunk_start, chunk_size);
struct mkfs_allocation *allocation)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
u64 chunk_start;
u64 chunk_size;
int ret;
- ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ ret = btrfs_alloc_chunk(trans, fs_info,
&chunk_start, &chunk_size, type);
if (ret == -ENOSPC) {
error("not enough free space to allocate chunk");
if (ret)
return ret;
- ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
+ ret = btrfs_make_block_group(trans, fs_info, 0,
type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
chunk_start, chunk_size);
return ret;
}
-static int create_data_reloc_tree(struct btrfs_trans_handle *trans,
- struct btrfs_root *root)
+static int create_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 objectid)
{
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);
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;
- location.type = 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->fs_info->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 (entry->d_name[0] == '.' &&
- (entry->d_name[1] == 0 ||
- (entry->d_name[1] == '.' && entry->d_name[2] == 0)))
- return 0;
- 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(const 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, const char *name,
- u64 self_objectid,
- struct btrfs_inode_item *inode_ret)
-{
- int ret;
- 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);
- }
-
- 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,
- struct stat *st, const char *path_name)
-{
- int ret = -1;
- ssize_t ret_read;
- u64 bytes_read = 0;
- struct btrfs_key key;
- int blocks;
- u32 sectorsize = root->fs_info->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(root->fs_info, 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(const char *dir, const 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, const 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;
- const 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;
- root_dir_key.type = 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,
- &cur_inode);
- if (ret == -EEXIST) {
- if (st.st_nlink <= 1) {
- error(
- "item %s already exists but has wrong st_nlink %lu <= 1",
- cur_file->d_name,
- (unsigned long)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, &st,
- cur_file->d_name);
- 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 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);
- }
-
- 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);
- return ret;
-}
-
-static int make_image(const 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(const 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];
+ char buf[SZ_4K];
int ret = 0, i;
ssize_t written;
- memset(buf, 0, 4096);
- loop_num = size / 4096;
+ memset(buf, 0, SZ_4K);
+
+ /* Only zero out the first 1M */
+ loop_num = SZ_1M / SZ_4K;
for (i = 0; i < loop_num; i++) {
- written = pwrite64(out_fd, buf, 4096, location);
- if (written != 4096)
+ written = pwrite64(out_fd, buf, SZ_4K, location);
+ if (written != SZ_4K)
ret = -EIO;
- location += 4096;
+ location += SZ_4K;
}
+
+ /* Then enlarge the file to size */
+ written = pwrite64(out_fd, buf, 1, size - 1);
+ if (written < 1)
+ ret = -EIO;
return ret;
}
btrfs_init_path(&path);
trans = btrfs_start_transaction(root, 1);
+ BUG_ON(IS_ERR(trans));
key.objectid = 0;
key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
ret = btrfs_search_slot(trans, root, &key, &path, 0, 0);
if (ret < 0)
goto out;
+ /* Don't pollute ret for >0 case */
+ if (ret > 0)
+ ret = 0;
btrfs_item_key_to_cpu(path.nodes[0], &found_key,
path.slots[0]);
return ret;
}
+/*
+ * Just update chunk allocation info, since --rootdir may allocate new
+ * chunks which is not updated in @allocation structure.
+ */
+static void update_chunk_allocation(struct btrfs_fs_info *fs_info,
+ struct mkfs_allocation *allocation)
+{
+ struct btrfs_block_group_cache *bg_cache;
+ const u64 mixed_flag = BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA;
+ u64 search_start = 0;
+
+ allocation->mixed = 0;
+ allocation->data = 0;
+ allocation->metadata = 0;
+ allocation->system = 0;
+ while (1) {
+ bg_cache = btrfs_lookup_first_block_group(fs_info,
+ search_start);
+ if (!bg_cache)
+ break;
+ if ((bg_cache->flags & mixed_flag) == mixed_flag)
+ allocation->mixed += bg_cache->key.offset;
+ else if (bg_cache->flags & BTRFS_BLOCK_GROUP_DATA)
+ allocation->data += bg_cache->key.offset;
+ else if (bg_cache->flags & BTRFS_BLOCK_GROUP_METADATA)
+ allocation->metadata += bg_cache->key.offset;
+ else
+ allocation->system += bg_cache->key.offset;
+ search_start = bg_cache->key.objectid + bg_cache->key.offset;
+ }
+}
+
int main(int argc, char **argv)
{
char *file;
u32 sectorsize = 4096;
u32 stripesize = 4096;
int zero_end = 1;
- int fd;
+ int fd = -1;
int ret;
+ int close_ret;
int i;
int mixed = 0;
int nodesize_forced = 0;
u64 num_of_meta_chunks = 0;
u64 size_of_data = 0;
u64 source_dir_size = 0;
+ u64 min_dev_size;
int dev_cnt = 0;
int saved_optind;
char fs_uuid[BTRFS_UUID_UNPARSED_SIZE] = { 0 };
error("unrecognized filesystem feature '%s'",
tmp);
free(orig);
- exit(1);
+ goto error;
}
free(orig);
if (features & BTRFS_FEATURE_LIST_ALL) {
btrfs_list_all_fs_features(0);
- exit(0);
+ goto success;
}
break;
}
case 'V':
printf("mkfs.btrfs, part of %s\n",
PACKAGE_STRING);
- exit(0);
- break;
+ goto success;
case 'r':
source_dir = optarg;
source_dir_set = 1;
if (source_dir_set && dev_cnt > 1) {
error("the option -r is limited to a single device");
- exit(1);
+ goto error;
}
if (*fs_uuid) {
if (uuid_parse(fs_uuid, dummy_uuid) != 0) {
error("could not parse UUID: %s", fs_uuid);
- exit(1);
+ goto error;
}
if (!test_uuid_unique(fs_uuid)) {
error("non-unique UUID: %s", fs_uuid);
- exit(1);
+ goto error;
}
}
while (dev_cnt-- > 0) {
file = argv[optind++];
if (is_block_device(file) == 1)
- if (test_dev_for_mkfs(file, force_overwrite))
- exit(1);
+ ret = test_dev_for_mkfs(file, force_overwrite);
+ else
+ ret = test_status_for_mkfs(file, force_overwrite);
+
+ if (ret)
+ goto error;
}
optind = saved_optind;
if (metadata_profile != data_profile) {
error(
"with mixed block groups data and metadata profiles must be the same");
- exit(1);
+ goto error;
}
}
if (btrfs_check_nodesize(nodesize, sectorsize,
features))
- exit(1);
+ goto error;
if (sectorsize < sizeof(struct btrfs_super_block)) {
error("sectorsize smaller than superblock: %u < %zu",
sectorsize, sizeof(struct btrfs_super_block));
- exit(1);
+ goto error;
}
+ min_dev_size = btrfs_min_dev_size(nodesize, mixed, metadata_profile,
+ data_profile);
/* Check device/block_count after the nodesize is determined */
- if (block_count && block_count < btrfs_min_dev_size(nodesize)) {
+ if (block_count && block_count < min_dev_size) {
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);
+ min_dev_size);
+ goto error;
}
for (i = saved_optind; i < saved_optind + dev_cnt; i++) {
char *path;
path = argv[i];
- ret = test_minimum_size(path, nodesize);
+ ret = test_minimum_size(path, min_dev_size);
if (ret < 0) {
error("failed to check size for %s: %s",
path, strerror(-ret));
- exit (1);
+ goto error;
}
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);
+ min_dev_size);
+ goto error;
}
}
ret = test_num_disk_vs_raid(metadata_profile, data_profile,
dev_cnt, mixed, ssd);
if (ret)
- exit(1);
+ goto error;
dev_cnt--;
fd = open(file, O_RDWR);
if (fd < 0) {
error("unable to open %s: %s", file, strerror(errno));
- exit(1);
+ goto error;
}
ret = btrfs_prepare_device(fd, file, &dev_block_count,
block_count,
(discard ? PREP_DEVICE_DISCARD : 0) |
(verbose ? PREP_DEVICE_VERBOSE : 0));
if (ret) {
- close(fd);
- exit(1);
+ goto error;
}
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);
+ goto error;
}
} else {
fd = open(file, O_CREAT | O_RDWR,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
if (fd < 0) {
error("unable to open %s: %s", file, strerror(errno));
- exit(1);
+ goto error;
}
- source_dir_size = size_sourcedir(source_dir, sectorsize,
- &num_of_meta_chunks, &size_of_data);
+ source_dir_size = btrfs_mkfs_size_dir(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);
+ goto error;
}
/* our "device" is the new image file */
dev_block_count = block_count;
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);
+ goto error;
}
if (group_profile_max_safe_loss(metadata_profile) <
ret = make_btrfs(fd, &mkfs_cfg);
if (ret) {
error("error during mkfs: %s", strerror(-ret));
- exit(1);
+ goto error;
}
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);
+ goto error;
}
+ close(fd);
+ fd = -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);
+ goto error;
}
trans = btrfs_start_transaction(root, 1);
- if (!trans) {
+ if (IS_ERR(trans)) {
error("failed to start transaction");
- exit(1);
+ goto error;
}
ret = create_data_block_groups(trans, root, mixed, &allocation);
if (ret) {
error("failed to create default data block groups: %d", ret);
- exit(1);
+ goto error;
}
ret = make_root_dir(trans, root);
if (ret) {
error("failed to setup the root directory: %d", ret);
- exit(1);
+ goto error;
}
ret = btrfs_commit_transaction(trans, root);
}
trans = btrfs_start_transaction(root, 1);
- if (!trans) {
+ if (IS_ERR(trans)) {
error("failed to start transaction");
- exit(1);
+ goto error;
}
if (dev_cnt == 0)
fd = open(file, O_RDWR);
if (fd < 0) {
error("unable to open %s: %s", file, strerror(errno));
- exit(1);
+ goto error;
}
ret = btrfs_device_already_in_root(root, fd,
BTRFS_SUPER_INFO_OFFSET);
(zero_end ? PREP_DEVICE_ZERO_END : 0) |
(discard ? PREP_DEVICE_DISCARD : 0));
if (ret) {
- close(fd);
- exit(1);
+ goto error;
}
ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
}
}
- ret = create_data_reloc_tree(trans, root);
+ ret = create_tree(trans, root, BTRFS_DATA_RELOC_TREE_OBJECTID);
if (ret) {
error("unable to create data reloc tree: %d", ret);
goto out;
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) {
goto out;
}
+ if (source_dir_set) {
+ ret = btrfs_mkfs_fill_dir(source_dir, root, verbose);
+ if (ret) {
+ error("error wihle filling filesystem: %d", ret);
+ goto out;
+ }
+ }
+
if (verbose) {
char features_buf[64];
+ update_chunk_allocation(fs_info, &allocation);
printf("Label: %s\n", label);
printf("UUID: %s\n", mkfs_cfg.fs_uuid);
printf("Node size: %u\n", nodesize);
*/
fs_info->finalize_on_close = 1;
out:
- ret = close_ctree(root);
+ close_ret = close_ctree(root);
- if (!ret) {
+ if (!close_ret) {
optind = saved_optind;
dev_cnt = argc - optind;
while (dev_cnt-- > 0) {
free(label);
return !!ret;
+error:
+ if (fd > 0)
+ close(fd);
+
+ free(label);
+ exit(1);
+success:
+ exit(0);
}