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-rw-r--r--mkfs/main.c652
1 files changed, 2 insertions, 650 deletions
diff --git a/mkfs/main.c b/mkfs/main.c
index d817ad8d..2a415ae9 100644
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -24,17 +24,12 @@
#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"
@@ -45,20 +40,11 @@
#include "list_sort.h"
#include "help.h"
#include "mkfs/common.h"
+#include "mkfs/rootdir.h"
#include "fsfeatures.h"
-int path_cat_out(char *out, const char *p1, const char *p2);
-
-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;
@@ -415,583 +401,6 @@ static char *parse_label(const char *input)
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;
- if (S_ISSOCK(st->st_mode))
- filetype = BTRFS_FT_SOCK;
- if (S_ISCHR(st->st_mode))
- filetype = BTRFS_FT_CHRDEV;
- if (S_ISBLK(st->st_mode))
- filetype = BTRFS_FT_BLKDEV;
- if (S_ISFIFO(st->st_mode))
- filetype = BTRFS_FT_FIFO;
-
- 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, (u64)SZ_1M);
- 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 int traverse_directory(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, const char *dir_name,
- struct directory_name_entry *dir_head)
-{
- 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)) {
- char tmp[PATH_MAX];
-
- dir_entry = malloc(sizeof(struct directory_name_entry));
- if (!dir_entry) {
- ret = -ENOMEM;
- goto fail;
- }
- dir_entry->dir_name = cur_file->d_name;
- if (path_cat_out(tmp, parent_dir_entry->path,
- cur_file->d_name)) {
- error("invalid path: %s/%s",
- parent_dir_entry->path,
- cur_file->d_name);
- ret = -EINVAL;
- goto fail;
- }
- dir_entry->path = strdup(tmp);
- if (!dir_entry->path) {
- error("not enough memory to store path");
- ret = -ENOMEM;
- goto fail;
- }
- 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,
@@ -1039,63 +448,6 @@ static int create_chunks(struct btrfs_trans_handle *trans,
return ret;
}
-static int make_image(const char *source_dir, struct btrfs_root *root)
-{
- 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);
- BUG_ON(IS_ERR(trans));
- ret = traverse_directory(trans, root, source_dir, &dir_head);
- 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:
- /*
- * Since we don't have btrfs_abort_transaction() yet, uncommitted trans
- * will trigger a BUG_ON().
- *
- * However before mkfs is fully finished, the magic number is invalid,
- * so even we commit transaction here, the fs still can't be mounted.
- *
- * To do a graceful error out, here we commit transaction as a
- * workaround.
- * Since we have already hit some problem, the return value doesn't
- * matter now.
- */
- btrfs_commit_transaction(trans, root);
- 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
@@ -1917,7 +1269,7 @@ raid_groups:
goto out;
}
- ret = make_image(source_dir, root);
+ ret = btrfs_mkfs_fill_dir(source_dir, root, verbose);
if (ret) {
error("error wihle filling filesystem: %d", ret);
goto out;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 04:34:57 +0000