/*
* @fs_uuid - if NULL, generates a UUID, returns back the new filesystem UUID
*/
-int make_btrfs(int fd, const char *device, const char *label, char *fs_uuid,
- u64 blocks[7], u64 num_bytes, u32 nodesize,
- u32 sectorsize, u32 stripesize, u64 features)
+int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
{
struct btrfs_super_block super;
struct extent_buffer *buf = NULL;
u64 ref_root;
u32 array_size;
u32 item_size;
- int skinny_metadata = !!(features &
+ int skinny_metadata = !!(cfg->features &
BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA);
+ u64 num_bytes;
- first_free = BTRFS_SUPER_INFO_OFFSET + sectorsize * 2 - 1;
- first_free &= ~((u64)sectorsize - 1);
+ first_free = BTRFS_SUPER_INFO_OFFSET + cfg->sectorsize * 2 - 1;
+ first_free &= ~((u64)cfg->sectorsize - 1);
memset(&super, 0, sizeof(super));
- num_bytes = (num_bytes / sectorsize) * sectorsize;
- if (fs_uuid && *fs_uuid) {
- if (uuid_parse(fs_uuid, super.fsid) != 0) {
- fprintf(stderr, "could not parse UUID: %s\n", fs_uuid);
+ num_bytes = (cfg->num_bytes / cfg->sectorsize) * cfg->sectorsize;
+ if (cfg->fs_uuid && *cfg->fs_uuid) {
+ if (uuid_parse(cfg->fs_uuid, super.fsid) != 0) {
+ fprintf(stderr, "could not parse UUID: %s\n",
+ cfg->fs_uuid);
ret = -EINVAL;
goto out;
}
- if (!test_uuid_unique(fs_uuid)) {
- fprintf(stderr, "non-unique UUID: %s\n", fs_uuid);
+ if (!test_uuid_unique(cfg->fs_uuid)) {
+ fprintf(stderr, "non-unique UUID: %s\n", cfg->fs_uuid);
ret = -EBUSY;
goto out;
}
} else {
uuid_generate(super.fsid);
- if (fs_uuid)
- uuid_unparse(super.fsid, fs_uuid);
+ if (cfg->fs_uuid)
+ uuid_unparse(super.fsid, cfg->fs_uuid);
}
uuid_generate(super.dev_item.uuid);
uuid_generate(chunk_tree_uuid);
- btrfs_set_super_bytenr(&super, blocks[0]);
+ btrfs_set_super_bytenr(&super, cfg->blocks[0]);
btrfs_set_super_num_devices(&super, 1);
btrfs_set_super_magic(&super, BTRFS_MAGIC);
btrfs_set_super_generation(&super, 1);
- btrfs_set_super_root(&super, blocks[1]);
- btrfs_set_super_chunk_root(&super, blocks[3]);
+ btrfs_set_super_root(&super, cfg->blocks[1]);
+ btrfs_set_super_chunk_root(&super, cfg->blocks[3]);
btrfs_set_super_total_bytes(&super, num_bytes);
- btrfs_set_super_bytes_used(&super, 6 * nodesize);
- btrfs_set_super_sectorsize(&super, sectorsize);
- btrfs_set_super_leafsize(&super, nodesize);
- btrfs_set_super_nodesize(&super, nodesize);
- btrfs_set_super_stripesize(&super, stripesize);
+ btrfs_set_super_bytes_used(&super, 6 * cfg->nodesize);
+ btrfs_set_super_sectorsize(&super, cfg->sectorsize);
+ btrfs_set_super_leafsize(&super, cfg->nodesize);
+ btrfs_set_super_nodesize(&super, cfg->nodesize);
+ btrfs_set_super_stripesize(&super, cfg->stripesize);
btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32);
btrfs_set_super_chunk_root_generation(&super, 1);
btrfs_set_super_cache_generation(&super, -1);
- btrfs_set_super_incompat_flags(&super, features);
- if (label)
- strncpy(super.label, label, BTRFS_LABEL_SIZE - 1);
+ btrfs_set_super_incompat_flags(&super, cfg->features);
+ if (cfg->label)
+ strncpy(super.label, cfg->label, BTRFS_LABEL_SIZE - 1);
- buf = malloc(sizeof(*buf) + max(sectorsize, nodesize));
+ buf = malloc(sizeof(*buf) + max(cfg->sectorsize, cfg->nodesize));
/* create the tree of root objects */
- memset(buf->data, 0, nodesize);
- buf->len = nodesize;
- btrfs_set_header_bytenr(buf, blocks[1]);
+ memset(buf->data, 0, cfg->nodesize);
+ buf->len = cfg->nodesize;
+ btrfs_set_header_bytenr(buf, cfg->blocks[1]);
btrfs_set_header_nritems(buf, 4);
btrfs_set_header_generation(buf, 1);
btrfs_set_header_backref_rev(buf, BTRFS_MIXED_BACKREF_REV);
btrfs_set_stack_inode_generation(inode_item, 1);
btrfs_set_stack_inode_size(inode_item, 3);
btrfs_set_stack_inode_nlink(inode_item, 1);
- btrfs_set_stack_inode_nbytes(inode_item, nodesize);
+ btrfs_set_stack_inode_nbytes(inode_item, cfg->nodesize);
btrfs_set_stack_inode_mode(inode_item, S_IFDIR | 0755);
btrfs_set_root_refs(&root_item, 1);
- btrfs_set_root_used(&root_item, nodesize);
+ btrfs_set_root_used(&root_item, cfg->nodesize);
btrfs_set_root_generation(&root_item, 1);
memset(&disk_key, 0, sizeof(disk_key));
btrfs_set_disk_key_offset(&disk_key, 0);
nritems = 0;
- itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize) - sizeof(root_item);
- btrfs_set_root_bytenr(&root_item, blocks[2]);
+ itemoff = __BTRFS_LEAF_DATA_SIZE(cfg->nodesize) - sizeof(root_item);
+ btrfs_set_root_bytenr(&root_item, cfg->blocks[2]);
btrfs_set_disk_key_objectid(&disk_key, BTRFS_EXTENT_TREE_OBJECTID);
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
nritems++;
itemoff = itemoff - sizeof(root_item);
- btrfs_set_root_bytenr(&root_item, blocks[4]);
+ btrfs_set_root_bytenr(&root_item, cfg->blocks[4]);
btrfs_set_disk_key_objectid(&disk_key, BTRFS_DEV_TREE_OBJECTID);
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
nritems++;
itemoff = itemoff - sizeof(root_item);
- btrfs_set_root_bytenr(&root_item, blocks[5]);
+ btrfs_set_root_bytenr(&root_item, cfg->blocks[5]);
btrfs_set_disk_key_objectid(&disk_key, BTRFS_FS_TREE_OBJECTID);
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
nritems++;
itemoff = itemoff - sizeof(root_item);
- btrfs_set_root_bytenr(&root_item, blocks[6]);
+ btrfs_set_root_bytenr(&root_item, cfg->blocks[6]);
btrfs_set_disk_key_objectid(&disk_key, BTRFS_CSUM_TREE_OBJECTID);
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, nodesize, blocks[1]);
- if (ret != nodesize) {
+ ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[1]);
+ if (ret != cfg->nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the items for the extent tree */
memset(buf->data + sizeof(struct btrfs_header), 0,
- nodesize - sizeof(struct btrfs_header));
+ cfg->nodesize - sizeof(struct btrfs_header));
nritems = 0;
- itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize);
+ itemoff = __BTRFS_LEAF_DATA_SIZE(cfg->nodesize);
for (i = 1; i < 7; i++) {
item_size = sizeof(struct btrfs_extent_item);
if (!skinny_metadata)
item_size += sizeof(struct btrfs_tree_block_info);
- BUG_ON(blocks[i] < first_free);
- BUG_ON(blocks[i] < blocks[i - 1]);
+ BUG_ON(cfg->blocks[i] < first_free);
+ BUG_ON(cfg->blocks[i] < cfg->blocks[i - 1]);
/* create extent item */
itemoff -= item_size;
- btrfs_set_disk_key_objectid(&disk_key, blocks[i]);
+ btrfs_set_disk_key_objectid(&disk_key, cfg->blocks[i]);
if (skinny_metadata) {
btrfs_set_disk_key_type(&disk_key,
BTRFS_METADATA_ITEM_KEY);
} else {
btrfs_set_disk_key_type(&disk_key,
BTRFS_EXTENT_ITEM_KEY);
- btrfs_set_disk_key_offset(&disk_key, nodesize);
+ btrfs_set_disk_key_offset(&disk_key, cfg->nodesize);
}
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_offset(buf, btrfs_item_nr(nritems),
/* create extent ref */
ref_root = reference_root_table[i];
- btrfs_set_disk_key_objectid(&disk_key, blocks[i]);
+ btrfs_set_disk_key_objectid(&disk_key, cfg->blocks[i]);
btrfs_set_disk_key_offset(&disk_key, ref_root);
btrfs_set_disk_key_type(&disk_key, BTRFS_TREE_BLOCK_REF_KEY);
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_size(buf, btrfs_item_nr(nritems), 0);
nritems++;
}
- btrfs_set_header_bytenr(buf, blocks[2]);
+ btrfs_set_header_bytenr(buf, cfg->blocks[2]);
btrfs_set_header_owner(buf, BTRFS_EXTENT_TREE_OBJECTID);
btrfs_set_header_nritems(buf, nritems);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, nodesize, blocks[2]);
- if (ret != nodesize) {
+ ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[2]);
+ if (ret != cfg->nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the chunk tree */
memset(buf->data + sizeof(struct btrfs_header), 0,
- nodesize - sizeof(struct btrfs_header));
+ cfg->nodesize - sizeof(struct btrfs_header));
nritems = 0;
item_size = sizeof(*dev_item);
- itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize) - item_size;
+ itemoff = __BTRFS_LEAF_DATA_SIZE(cfg->nodesize) - item_size;
/* first device 1 (there is no device 0) */
btrfs_set_disk_key_objectid(&disk_key, BTRFS_DEV_ITEMS_OBJECTID);
btrfs_set_device_total_bytes(buf, dev_item, num_bytes);
btrfs_set_device_bytes_used(buf, dev_item,
BTRFS_MKFS_SYSTEM_GROUP_SIZE);
- btrfs_set_device_io_align(buf, dev_item, sectorsize);
- btrfs_set_device_io_width(buf, dev_item, sectorsize);
- btrfs_set_device_sector_size(buf, dev_item, sectorsize);
+ btrfs_set_device_io_align(buf, dev_item, cfg->sectorsize);
+ btrfs_set_device_io_width(buf, dev_item, cfg->sectorsize);
+ btrfs_set_device_sector_size(buf, dev_item, cfg->sectorsize);
btrfs_set_device_type(buf, dev_item, 0);
write_extent_buffer(buf, super.dev_item.uuid,
btrfs_set_chunk_owner(buf, chunk, BTRFS_EXTENT_TREE_OBJECTID);
btrfs_set_chunk_stripe_len(buf, chunk, 64 * 1024);
btrfs_set_chunk_type(buf, chunk, BTRFS_BLOCK_GROUP_SYSTEM);
- btrfs_set_chunk_io_align(buf, chunk, sectorsize);
- btrfs_set_chunk_io_width(buf, chunk, sectorsize);
- btrfs_set_chunk_sector_size(buf, chunk, sectorsize);
+ btrfs_set_chunk_io_align(buf, chunk, cfg->sectorsize);
+ btrfs_set_chunk_io_width(buf, chunk, cfg->sectorsize);
+ btrfs_set_chunk_sector_size(buf, chunk, cfg->sectorsize);
btrfs_set_chunk_num_stripes(buf, chunk, 1);
btrfs_set_stripe_devid_nr(buf, chunk, 0, 1);
btrfs_set_stripe_offset_nr(buf, chunk, 0, 0);
ptr += item_size;
btrfs_set_super_sys_array_size(&super, array_size);
- btrfs_set_header_bytenr(buf, blocks[3]);
+ btrfs_set_header_bytenr(buf, cfg->blocks[3]);
btrfs_set_header_owner(buf, BTRFS_CHUNK_TREE_OBJECTID);
btrfs_set_header_nritems(buf, nritems);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, nodesize, blocks[3]);
- if (ret != nodesize) {
+ ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[3]);
+ if (ret != cfg->nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the device tree */
memset(buf->data + sizeof(struct btrfs_header), 0,
- nodesize - sizeof(struct btrfs_header));
+ cfg->nodesize - sizeof(struct btrfs_header));
nritems = 0;
- itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize) -
+ itemoff = __BTRFS_LEAF_DATA_SIZE(cfg->nodesize) -
sizeof(struct btrfs_dev_extent);
btrfs_set_disk_key_objectid(&disk_key, 1);
BTRFS_MKFS_SYSTEM_GROUP_SIZE);
nritems++;
- btrfs_set_header_bytenr(buf, blocks[4]);
+ btrfs_set_header_bytenr(buf, cfg->blocks[4]);
btrfs_set_header_owner(buf, BTRFS_DEV_TREE_OBJECTID);
btrfs_set_header_nritems(buf, nritems);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, nodesize, blocks[4]);
- if (ret != nodesize) {
+ ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[4]);
+ if (ret != cfg->nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the FS root */
memset(buf->data + sizeof(struct btrfs_header), 0,
- nodesize - sizeof(struct btrfs_header));
- btrfs_set_header_bytenr(buf, blocks[5]);
+ cfg->nodesize - sizeof(struct btrfs_header));
+ btrfs_set_header_bytenr(buf, cfg->blocks[5]);
btrfs_set_header_owner(buf, BTRFS_FS_TREE_OBJECTID);
btrfs_set_header_nritems(buf, 0);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, nodesize, blocks[5]);
- if (ret != nodesize) {
+ ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[5]);
+ if (ret != cfg->nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* finally create the csum root */
memset(buf->data + sizeof(struct btrfs_header), 0,
- nodesize - sizeof(struct btrfs_header));
- btrfs_set_header_bytenr(buf, blocks[6]);
+ cfg->nodesize - sizeof(struct btrfs_header));
+ btrfs_set_header_bytenr(buf, cfg->blocks[6]);
btrfs_set_header_owner(buf, BTRFS_CSUM_TREE_OBJECTID);
btrfs_set_header_nritems(buf, 0);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, nodesize, blocks[6]);
- if (ret != nodesize) {
+ ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[6]);
+ if (ret != cfg->nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* and write out the super block */
- BUG_ON(sizeof(super) > sectorsize);
- memset(buf->data, 0, sectorsize);
+ BUG_ON(sizeof(super) > cfg->sectorsize);
+ memset(buf->data, 0, cfg->sectorsize);
memcpy(buf->data, &super, sizeof(super));
- buf->len = sectorsize;
+ buf->len = cfg->sectorsize;
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, sectorsize, blocks[0]);
- if (ret != sectorsize) {
+ ret = pwrite(fd, buf->data, cfg->sectorsize, cfg->blocks[0]);
+ if (ret != cfg->sectorsize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
*/
int open_path_or_dev_mnt(const char *path, DIR **dirstream)
{
- char mp[BTRFS_PATH_NAME_MAX + 1];
+ char mp[PATH_MAX];
int fdmnt;
if (is_block_device(path)) {
strerror(errno));
return -errno;
}
- strncpy(args.name, fname, BTRFS_PATH_NAME_MAX);
- args.name[BTRFS_PATH_NAME_MAX-1] = 0;
+ memset(&args, 0, sizeof(args));
+ strncpy_null(args.name, fname);
ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args);
e = errno;
if (ret < 0) {
return ret;
}
+/*
+ * Note: this function uses a static per-thread buffer. Do not call this
+ * function more than 10 times within one argument list!
+ */
+const char *pretty_size_mode(u64 size, unsigned mode)
+{
+ static __thread int ps_index = 0;
+ static __thread char ps_array[10][32];
+ char *ret;
+
+ ret = ps_array[ps_index];
+ ps_index++;
+ ps_index %= 10;
+ (void)pretty_size_snprintf(size, ret, 32, mode);
+
+ return ret;
+}
+
static const char* unit_suffix_binary[] =
{ "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"};
static const char* unit_suffix_decimal[] =
}
if (fd < 0) {
fd = -1;
- if (*dirstream)
+ if (*dirstream) {
closedir(*dirstream);
+ *dirstream = NULL;
+ }
}
return fd;
}
struct btrfs_fs_devices *fs_devices_mnt = NULL;
struct btrfs_ioctl_dev_info_args *di_args;
struct btrfs_ioctl_dev_info_args tmp;
- char mp[BTRFS_PATH_NAME_MAX + 1];
+ char mp[PATH_MAX];
DIR *dirstream = NULL;
memset(fi_args, 0, sizeof(*fi_args));
}
int test_num_disk_vs_raid(u64 metadata_profile, u64 data_profile,
- u64 dev_cnt, int mixed, char *estr)
+ u64 dev_cnt, int mixed)
{
- size_t sz = 100;
u64 allowed = 0;
switch (dev_cnt) {
if (dev_cnt > 1 &&
((metadata_profile | data_profile) & BTRFS_BLOCK_GROUP_DUP)) {
- snprintf(estr, sz,
- "DUP is not allowed when FS has multiple devices\n");
+ fprintf(stderr,
+ "ERROR: DUP is not allowed when FS has multiple devices\n");
return 1;
}
if (metadata_profile & ~allowed) {
- snprintf(estr, sz,
- "unable to create FS with metadata profile %s "
+ fprintf(stderr,
+ "ERROR: unable to create FS with metadata profile %s "
"(have %llu devices but %d devices are required)\n",
btrfs_group_profile_str(metadata_profile), dev_cnt,
group_profile_devs_min(metadata_profile));
return 1;
}
if (data_profile & ~allowed) {
- snprintf(estr, sz,
- "unable to create FS with data profile %s "
+ fprintf(stderr,
+ "ERROR: unable to create FS with data profile %s "
"(have %llu devices but %d devices are required)\n",
btrfs_group_profile_str(data_profile), dev_cnt,
group_profile_devs_min(data_profile));
}
if (!mixed && (data_profile & BTRFS_BLOCK_GROUP_DUP)) {
- snprintf(estr, sz,
- "dup for data is allowed only in mixed mode");
+ fprintf(stderr,
+ "ERROR: DUP for data is allowed only in mixed mode");
return 1;
}
return 0;
}
}
-/* Check if disk is suitable for btrfs
+/*
+ * Check if a device is suitable for btrfs
* returns:
- * 1: something is wrong, estr provides the error
+ * 1: something is wrong, an error is printed
* 0: all is fine
*/
-int test_dev_for_mkfs(char *file, int force_overwrite, char *estr)
+int test_dev_for_mkfs(char *file, int force_overwrite)
{
int ret, fd;
- size_t sz = 100;
struct stat st;
ret = is_swap_device(file);
if (ret < 0) {
- snprintf(estr, sz, "error checking %s status: %s\n", file,
+ fprintf(stderr, "ERROR: checking status of %s: %s\n", file,
strerror(-ret));
return 1;
}
if (ret == 1) {
- snprintf(estr, sz, "%s is a swap device\n", file);
+ fprintf(stderr, "ERROR: %s is a swap device\n", file);
return 1;
}
if (!force_overwrite) {
if (check_overwrite(file)) {
- snprintf(estr, sz, "Use the -f option to force overwrite.\n");
+ fprintf(stderr, "Use the -f option to force overwrite.\n");
return 1;
}
}
ret = check_mounted(file);
if (ret < 0) {
- snprintf(estr, sz, "error checking %s mount status\n",
- file);
+ fprintf(stderr, "ERROR: checking mount status of %s: %s\n",
+ file, strerror(-ret));
return 1;
}
if (ret == 1) {
- snprintf(estr, sz, "%s is mounted\n", file);
+ fprintf(stderr, "ERROR: %s is mounted\n", file);
return 1;
}
/* check if the device is busy */
fd = open(file, O_RDWR|O_EXCL);
if (fd < 0) {
- snprintf(estr, sz, "unable to open %s: %s\n", file,
+ fprintf(stderr, "ERROR: unable to open %s: %s\n", file,
strerror(errno));
return 1;
}
if (fstat(fd, &st)) {
- snprintf(estr, sz, "unable to stat %s: %s\n", file,
+ fprintf(stderr, "ERROR: unable to stat %s: %s\n", file,
strerror(errno));
close(fd);
return 1;
}
if (!S_ISBLK(st.st_mode)) {
- fprintf(stderr, "'%s' is not a block device\n", file);
+ fprintf(stderr, "ERROR: %s is not a block device\n", file);
close(fd);
return 1;
}
}
return 0;
}
+
+/*
+ * Copy a path argument from SRC to DEST and check the SRC length if it's at
+ * most PATH_MAX and fits into DEST. DESTLEN is supposed to be exact size of
+ * the buffer.
+ * The destination buffer is zero terminated.
+ * Return < 0 for error, 0 otherwise.
+ */
+int arg_copy_path(char *dest, const char *src, int destlen)
+{
+ size_t len = strlen(src);
+
+ if (len >= PATH_MAX || len >= destlen)
+ return -ENAMETOOLONG;
+
+ __strncpy__null(dest, src, destlen);
+
+ return 0;
+}
projects / platform / upstream / btrfs-progs.git / blobdiff