* Boston, MA 021110-1307, USA.
*/
-#define _XOPEN_SOURCE 700
-#define __USE_XOPEN2K8
-#define __XOPEN2K8 /* due to an error in dirent.h, to get dirfd() */
-#define _GNU_SOURCE /* O_NOATIME */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/kdev_t.h>
#include <limits.h>
#include <blkid/blkid.h>
+#include <sys/vfs.h>
+
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#define BLKDISCARD _IO(0x12,119)
#endif
+static int btrfs_scan_done = 0;
+
static char argv0_buf[ARGV0_BUF_SIZE] = "btrfs";
void fixup_argv0(char **argv, const char *token)
void set_argv0(char **argv)
{
- sprintf(argv0_buf, "%s", argv[0]);
+ strncpy(argv0_buf, argv[0], sizeof(argv0_buf));
+ argv0_buf[sizeof(argv0_buf) - 1] = 0;
}
int check_argc_exact(int nargs, int expected)
int make_btrfs(int fd, const char *device, const char *label, char *fs_uuid,
u64 blocks[7], u64 num_bytes, u32 nodesize,
- u32 leafsize, u32 sectorsize, u32 stripesize, u64 features)
+ u32 sectorsize, u32 stripesize, u64 features)
{
struct btrfs_super_block super;
struct extent_buffer *buf = NULL;
btrfs_set_super_root(&super, blocks[1]);
btrfs_set_super_chunk_root(&super, blocks[3]);
btrfs_set_super_total_bytes(&super, num_bytes);
- btrfs_set_super_bytes_used(&super, 6 * leafsize);
+ btrfs_set_super_bytes_used(&super, 6 * nodesize);
btrfs_set_super_sectorsize(&super, sectorsize);
- btrfs_set_super_leafsize(&super, leafsize);
+ btrfs_set_super_leafsize(&super, nodesize);
btrfs_set_super_nodesize(&super, nodesize);
btrfs_set_super_stripesize(&super, stripesize);
btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32);
if (label)
strncpy(super.label, label, BTRFS_LABEL_SIZE - 1);
- buf = malloc(sizeof(*buf) + max(sectorsize, leafsize));
+ buf = malloc(sizeof(*buf) + max(sectorsize, nodesize));
/* create the tree of root objects */
- memset(buf->data, 0, leafsize);
- buf->len = leafsize;
+ memset(buf->data, 0, nodesize);
+ buf->len = nodesize;
btrfs_set_header_bytenr(buf, blocks[1]);
btrfs_set_header_nritems(buf, 4);
btrfs_set_header_generation(buf, 1);
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, leafsize);
+ btrfs_set_stack_inode_nbytes(inode_item, nodesize);
btrfs_set_stack_inode_mode(inode_item, S_IFDIR | 0755);
btrfs_set_root_refs(&root_item, 1);
- btrfs_set_root_used(&root_item, leafsize);
+ btrfs_set_root_used(&root_item, 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(leafsize) - sizeof(root_item);
+ itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize) - sizeof(root_item);
btrfs_set_root_bytenr(&root_item, blocks[2]);
btrfs_set_disk_key_objectid(&disk_key, BTRFS_EXTENT_TREE_OBJECTID);
btrfs_set_item_key(buf, &disk_key, nritems);
csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
- ret = pwrite(fd, buf->data, leafsize, blocks[1]);
- if (ret != leafsize) {
+ ret = pwrite(fd, buf->data, nodesize, blocks[1]);
+ if (ret != nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the items for the extent tree */
- memset(buf->data+sizeof(struct btrfs_header), 0,
- leafsize-sizeof(struct btrfs_header));
+ memset(buf->data + sizeof(struct btrfs_header), 0,
+ nodesize - sizeof(struct btrfs_header));
nritems = 0;
- itemoff = __BTRFS_LEAF_DATA_SIZE(leafsize);
+ itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize);
for (i = 1; i < 7; i++) {
item_size = sizeof(struct btrfs_extent_item);
if (!skinny_metadata)
} else {
btrfs_set_disk_key_type(&disk_key,
BTRFS_EXTENT_ITEM_KEY);
- btrfs_set_disk_key_offset(&disk_key, leafsize);
+ btrfs_set_disk_key_offset(&disk_key, nodesize);
}
btrfs_set_item_key(buf, &disk_key, nritems);
btrfs_set_item_offset(buf, btrfs_item_nr(nritems),
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, leafsize, blocks[2]);
- if (ret != leafsize) {
+ ret = pwrite(fd, buf->data, nodesize, blocks[2]);
+ if (ret != nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the chunk tree */
- memset(buf->data+sizeof(struct btrfs_header), 0,
- leafsize-sizeof(struct btrfs_header));
+ memset(buf->data + sizeof(struct btrfs_header), 0,
+ nodesize - sizeof(struct btrfs_header));
nritems = 0;
item_size = sizeof(*dev_item);
- itemoff = __BTRFS_LEAF_DATA_SIZE(leafsize) - item_size;
+ itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize) - item_size;
/* first device 1 (there is no device 0) */
btrfs_set_disk_key_objectid(&disk_key, BTRFS_DEV_ITEMS_OBJECTID);
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, leafsize, blocks[3]);
- if (ret != leafsize) {
+ ret = pwrite(fd, buf->data, nodesize, blocks[3]);
+ if (ret != nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the device tree */
- memset(buf->data+sizeof(struct btrfs_header), 0,
- leafsize-sizeof(struct btrfs_header));
+ memset(buf->data + sizeof(struct btrfs_header), 0,
+ nodesize - sizeof(struct btrfs_header));
nritems = 0;
- itemoff = __BTRFS_LEAF_DATA_SIZE(leafsize) -
+ itemoff = __BTRFS_LEAF_DATA_SIZE(nodesize) -
sizeof(struct btrfs_dev_extent);
btrfs_set_disk_key_objectid(&disk_key, 1);
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, leafsize, blocks[4]);
- if (ret != leafsize) {
+ ret = pwrite(fd, buf->data, nodesize, blocks[4]);
+ if (ret != nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* create the FS root */
- memset(buf->data+sizeof(struct btrfs_header), 0,
- leafsize-sizeof(struct btrfs_header));
+ memset(buf->data + sizeof(struct btrfs_header), 0,
+ nodesize - sizeof(struct btrfs_header));
btrfs_set_header_bytenr(buf, 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, leafsize, blocks[5]);
- if (ret != leafsize) {
+ ret = pwrite(fd, buf->data, nodesize, blocks[5]);
+ if (ret != nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
/* finally create the csum root */
- memset(buf->data+sizeof(struct btrfs_header), 0,
- leafsize-sizeof(struct btrfs_header));
+ memset(buf->data + sizeof(struct btrfs_header), 0,
+ nodesize - sizeof(struct btrfs_header));
btrfs_set_header_bytenr(buf, 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, leafsize, blocks[6]);
- if (ret != leafsize) {
+ ret = pwrite(fd, buf->data, nodesize, blocks[6]);
+ if (ret != nodesize) {
ret = (ret < 0 ? -errno : -EIO);
goto out;
}
* optimization.
*/
if (discard_range(fd, 0, 0) == 0) {
- fprintf(stderr, "Performing full device TRIM (%s) ...\n",
+ printf("Performing full device TRIM (%s) ...\n",
pretty_size(block_count));
discard_blocks(fd, 0, block_count);
}
btrfs_set_stack_inode_generation(&inode_item, trans->transid);
btrfs_set_stack_inode_size(&inode_item, 0);
btrfs_set_stack_inode_nlink(&inode_item, 1);
- btrfs_set_stack_inode_nbytes(&inode_item, root->leafsize);
+ btrfs_set_stack_inode_nbytes(&inode_item, root->nodesize);
btrfs_set_stack_inode_mode(&inode_item, S_IFDIR | 0755);
btrfs_set_stack_timespec_sec(&inode_item.atime, now);
btrfs_set_stack_timespec_nsec(&inode_item.atime, 0);
return ret;
}
+static int is_reg_file(const char *path)
+{
+ struct stat statbuf;
+
+ if (stat(path, &statbuf) < 0)
+ return -errno;
+ return S_ISREG(statbuf.st_mode);
+}
+
+/*
+ * This function checks if the given input parameter is
+ * an uuid or a path
+ * return <0 : some error in the given input
+ * return BTRFS_ARG_UNKNOWN: unknown input
+ * return BTRFS_ARG_UUID: given input is uuid
+ * return BTRFS_ARG_MNTPOINT: given input is path
+ * return BTRFS_ARG_REG: given input is regular file
+ */
+int check_arg_type(const char *input)
+{
+ uuid_t uuid;
+ char path[PATH_MAX];
+
+ if (!input)
+ return -EINVAL;
+
+ if (realpath(input, path)) {
+ if (is_block_device(path) == 1)
+ return BTRFS_ARG_BLKDEV;
+
+ if (is_mount_point(path) == 1)
+ return BTRFS_ARG_MNTPOINT;
+
+ if (is_reg_file(path))
+ return BTRFS_ARG_REG;
+
+ return BTRFS_ARG_UNKNOWN;
+ }
+
+ if (strlen(input) == (BTRFS_UUID_UNPARSED_SIZE - 1) &&
+ !uuid_parse(input, uuid))
+ return BTRFS_ARG_UUID;
+
+ return BTRFS_ARG_UNKNOWN;
+}
+
/*
* Find the mount point for a mounted device.
* On success, returns 0 with mountpoint in *mp.
return 0;
}
-/* Checks whether a and b are identical or device
+/*
+ * Checks whether a and b are identical or device
* files associated with the same block device
*/
static int is_same_blk_file(const char* a, const char* b)
char real_a[PATH_MAX];
char real_b[PATH_MAX];
- if(!realpath(a, real_a))
- strcpy(real_a, a);
+ if (!realpath(a, real_a))
+ strncpy_null(real_a, a);
if (!realpath(b, real_b))
- strcpy(real_b, b);
+ strncpy_null(real_b, b);
/* Identical path? */
- if(strcmp(real_a, real_b) == 0)
+ if (strcmp(real_a, real_b) == 0)
return 1;
- if(stat(a, &st_buf_a) < 0 ||
- stat(b, &st_buf_b) < 0)
- {
+ if (stat(a, &st_buf_a) < 0 || stat(b, &st_buf_b) < 0) {
if (errno == ENOENT)
return 0;
return -errno;
}
/* Same blockdevice? */
- if(S_ISBLK(st_buf_a.st_mode) &&
- S_ISBLK(st_buf_b.st_mode) &&
- st_buf_a.st_rdev == st_buf_b.st_rdev)
- {
+ if (S_ISBLK(st_buf_a.st_mode) && S_ISBLK(st_buf_b.st_mode) &&
+ st_buf_a.st_rdev == st_buf_b.st_rdev) {
return 1;
}
/* Hardlink? */
if (st_buf_a.st_dev == st_buf_b.st_dev &&
- st_buf_a.st_ino == st_buf_b.st_ino)
- {
+ st_buf_a.st_ino == st_buf_b.st_ino) {
return 1;
}
/* scan other devices */
if (is_btrfs && total_devs > 1) {
- ret = btrfs_scan_lblkid(!BTRFS_UPDATE_KERNEL);
+ ret = btrfs_scan_lblkid();
if (ret)
return ret;
}
char name[PATH_MAX];
};
-void btrfs_register_one_device(char *fname)
+int btrfs_register_one_device(const char *fname)
{
struct btrfs_ioctl_vol_args args;
int fd;
fprintf(stderr, "failed to open /dev/btrfs-control "
"skipping device registration: %s\n",
strerror(errno));
- return;
+ return -errno;
}
strncpy(args.name, fname, BTRFS_PATH_NAME_MAX);
args.name[BTRFS_PATH_NAME_MAX-1] = 0;
ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args);
e = errno;
- if(ret<0){
+ if (ret < 0) {
fprintf(stderr, "ERROR: device scan failed '%s' - %s\n",
fname, strerror(e));
+ ret = -e;
}
close(fd);
+ return ret;
+}
+
+/*
+ * Register all devices in the fs_uuid list created in the user
+ * space. Ensure btrfs_scan_lblkid() is called before this func.
+ */
+int btrfs_register_all_devices(void)
+{
+ int err;
+ struct btrfs_fs_devices *fs_devices;
+ struct btrfs_device *device;
+ struct list_head *all_uuids;
+
+ all_uuids = btrfs_scanned_uuids();
+
+ list_for_each_entry(fs_devices, all_uuids, list) {
+ list_for_each_entry(device, &fs_devices->devices, dev_list) {
+ if (strlen(device->name) != 0) {
+ err = btrfs_register_one_device(device->name);
+ if (err < 0)
+ return err;
+ if (err > 0)
+ return -err;
+ }
+ }
+ }
+ return 0;
}
int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
static const char* unit_suffix_binary[] =
{ "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"};
static const char* unit_suffix_decimal[] =
- { "B", "kB", "mB", "gB", "tB", "pB", "eB"};
+ { "B", "kB", "MB", "GB", "TB", "PB", "EB"};
int pretty_size_snprintf(u64 size, char *str, size_t str_size, unsigned unit_mode)
{
strcpy(fullpath,"/dev/");
while(fgets(buf, 1023, proc_partitions)) {
- i = sscanf(buf," %*d %*d %*d %99s", fullpath+5);
+ ret = sscanf(buf," %*d %*d %*d %99s", fullpath + 5);
+ if (ret != 1) {
+ fprintf(stderr,
+ "failed to scan device name from /proc/partitions\n");
+ break;
+ }
/*
* multipath and MD devices may register as a btrfs filesystem
}
/*
+ * Unsafe subvolume check.
+ *
+ * This only checks ino == BTRFS_FIRST_FREE_OBJECTID, even it is not in a
+ * btrfs mount point.
+ * Must use together with other reliable method like btrfs ioctl.
+ */
+static int __is_subvol(const char *path)
+{
+ struct stat st;
+ int ret;
+
+ ret = lstat(path, &st);
+ if (ret < 0)
+ return ret;
+
+ return st.st_ino == BTRFS_FIRST_FREE_OBJECTID;
+}
+
+/*
* A not-so-good version fls64. No fascinating optimization since
* no one except parse_size use it
*/
return ret;
}
+u64 parse_qgroupid(const char *p)
+{
+ char *s = strchr(p, '/');
+ const char *ptr_src_end = p + strlen(p);
+ char *ptr_parse_end = NULL;
+ u64 level;
+ u64 id;
+ int fd;
+ int ret = 0;
+
+ if (p[0] == '/')
+ goto path;
+
+ /* Numeric format like '0/257' is the primary case */
+ if (!s) {
+ id = strtoull(p, &ptr_parse_end, 10);
+ if (ptr_parse_end != ptr_src_end)
+ goto path;
+ return id;
+ }
+ level = strtoull(p, &ptr_parse_end, 10);
+ if (ptr_parse_end != s)
+ goto path;
+
+ id = strtoull(s + 1, &ptr_parse_end, 10);
+ if (ptr_parse_end != ptr_src_end)
+ goto path;
+
+ return (level << BTRFS_QGROUP_LEVEL_SHIFT) | id;
+
+path:
+ /* Path format like subv at 'my_subvol' is the fallback case */
+ ret = __is_subvol(p);
+ if (ret < 0 || !ret)
+ goto err;
+ fd = open(p, O_RDONLY);
+ if (fd < 0)
+ goto err;
+ ret = lookup_ino_rootid(fd, &id);
+ close(fd);
+ if (ret < 0)
+ goto err;
+ return id;
+
+err:
+ fprintf(stderr, "ERROR: invalid qgroupid or subvolume path: %s\n", p);
+ exit(-1);
+}
+
int open_file_or_dir3(const char *fname, DIR **dirstream, int open_flags)
{
int ret;
return ret ? -errno : 0;
}
+static u64 find_max_device_id(struct btrfs_ioctl_search_args *search_args,
+ int nr_items)
+{
+ struct btrfs_dev_item *dev_item;
+ char *buf = search_args->buf;
+
+ buf += (nr_items - 1) * (sizeof(struct btrfs_ioctl_search_header)
+ + sizeof(struct btrfs_dev_item));
+ buf += sizeof(struct btrfs_ioctl_search_header);
+
+ dev_item = (struct btrfs_dev_item *)buf;
+
+ return btrfs_stack_device_id(dev_item);
+}
+
+static int search_chunk_tree_for_fs_info(int fd,
+ struct btrfs_ioctl_fs_info_args *fi_args)
+{
+ int ret;
+ int max_items;
+ u64 start_devid = 1;
+ struct btrfs_ioctl_search_args search_args;
+ struct btrfs_ioctl_search_key *search_key = &search_args.key;
+
+ fi_args->num_devices = 0;
+
+ max_items = BTRFS_SEARCH_ARGS_BUFSIZE
+ / (sizeof(struct btrfs_ioctl_search_header)
+ + sizeof(struct btrfs_dev_item));
+
+ search_key->tree_id = BTRFS_CHUNK_TREE_OBJECTID;
+ search_key->min_objectid = BTRFS_DEV_ITEMS_OBJECTID;
+ search_key->max_objectid = BTRFS_DEV_ITEMS_OBJECTID;
+ search_key->min_type = BTRFS_DEV_ITEM_KEY;
+ search_key->max_type = BTRFS_DEV_ITEM_KEY;
+ search_key->min_transid = 0;
+ search_key->max_transid = (u64)-1;
+ search_key->nr_items = max_items;
+ search_key->max_offset = (u64)-1;
+
+again:
+ search_key->min_offset = start_devid;
+
+ ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &search_args);
+ if (ret < 0)
+ return -errno;
+
+ fi_args->num_devices += (u64)search_key->nr_items;
+
+ if (search_key->nr_items == max_items) {
+ start_devid = find_max_device_id(&search_args,
+ search_key->nr_items) + 1;
+ goto again;
+ }
+
+ /* get the lastest max_id to stay consistent with the num_devices */
+ if (search_key->nr_items == 0)
+ /*
+ * last tree_search returns an empty buf, use the devid of
+ * the last dev_item of the previous tree_search
+ */
+ fi_args->max_id = start_devid - 1;
+ else
+ fi_args->max_id = find_max_device_id(&search_args,
+ search_key->nr_items);
+
+ return 0;
+}
+
/*
* For a given path, fill in the ioctl fs_ and info_ args.
* If the path is a btrfs mountpoint, fill info for all devices.
int ret = 0;
int ndevs = 0;
int i = 0;
+ int replacing = 0;
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];
DIR *dirstream = NULL;
ret = -errno;
goto out;
}
+
+ /*
+ * The fs_args->num_devices does not include seed devices
+ */
+ ret = search_chunk_tree_for_fs_info(fd, fi_args);
+ if (ret)
+ goto out;
+
+ /*
+ * search_chunk_tree_for_fs_info() will lacks the devid 0
+ * so manual probe for it here.
+ */
+ ret = get_device_info(fd, 0, &tmp);
+ if (!ret) {
+ fi_args->num_devices++;
+ ndevs++;
+ replacing = 1;
+ if (i == 0)
+ i++;
+ }
}
if (!fi_args->num_devices)
goto out;
- /*
- * with kernel patch
- * btrfs: ioctl BTRFS_IOC_FS_INFO and BTRFS_IOC_DEV_INFO miss-matched with slots
- * the kernel now returns total_devices which does not include
- * replacing device if running.
- * As we need to get dev info of the replace device if it is running,
- * so just add one to fi_args->num_devices.
- */
-
- di_args = *di_ret = malloc((fi_args->num_devices + 1) * sizeof(*di_args));
+ di_args = *di_ret = malloc((fi_args->num_devices) * sizeof(*di_args));
if (!di_args) {
ret = -errno;
goto out;
}
- /* get the replace target device if it is there */
- ret = get_device_info(fd, i, &di_args[ndevs]);
- if (!ret) {
- ndevs++;
- fi_args->num_devices++;
- }
- i++;
-
+ if (replacing)
+ memcpy(di_args, &tmp, sizeof(tmp));
for (; i <= fi_args->max_id; ++i) {
- BUG_ON(ndevs >= fi_args->num_devices);
ret = get_device_info(fd, i, &di_args[ndevs]);
if (ret == -ENODEV)
continue;
return ret;
}
+static int group_profile_devs_min(u64 flag)
+{
+ switch (flag & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
+ case 0: /* single */
+ case BTRFS_BLOCK_GROUP_DUP:
+ return 1;
+ case BTRFS_BLOCK_GROUP_RAID0:
+ case BTRFS_BLOCK_GROUP_RAID1:
+ case BTRFS_BLOCK_GROUP_RAID5:
+ return 2;
+ case BTRFS_BLOCK_GROUP_RAID6:
+ return 3;
+ case BTRFS_BLOCK_GROUP_RAID10:
+ return 4;
+ default:
+ return -1;
+ }
+}
+
int test_num_disk_vs_raid(u64 metadata_profile, u64 data_profile,
u64 dev_cnt, int mixed, char *estr)
{
allowed |= BTRFS_BLOCK_GROUP_DUP;
}
+ 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");
+ return 1;
+ }
if (metadata_profile & ~allowed) {
- snprintf(estr, sz, "unable to create FS with metadata "
- "profile %llu (have %llu devices)\n",
- metadata_profile, dev_cnt);
+ snprintf(estr, sz,
+ "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 %llu (have %llu devices)\n",
- metadata_profile, dev_cnt);
+ snprintf(estr, sz,
+ "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));
return 1;
}
return 0;
}
-int btrfs_scan_lblkid(int update_kernel)
+int btrfs_scan_lblkid()
{
int fd = -1;
int ret;
blkid_cache cache = NULL;
char path[PATH_MAX];
+ if (btrfs_scan_done)
+ return 0;
+
if (blkid_get_cache(&cache, 0) < 0) {
printf("ERROR: lblkid cache get failed\n");
return 1;
if (!dev)
continue;
/* if we are here its definitely a btrfs disk*/
- strncpy(path, blkid_dev_devname(dev), PATH_MAX);
+ strncpy_null(path, blkid_dev_devname(dev));
fd = open(path, O_RDONLY);
if (fd < 0) {
}
close(fd);
- if (update_kernel)
- btrfs_register_one_device(path);
}
blkid_dev_iterate_end(iter);
blkid_put_cache(cache);
+
+ btrfs_scan_done = 1;
+
return 0;
}
return ret;
}
-int test_minimum_size(const char *file, u32 leafsize)
+int test_minimum_size(const char *file, u32 nodesize)
{
int fd;
struct stat statbuf;
close(fd);
return -errno;
}
- if (btrfs_device_size(fd, &statbuf) < btrfs_min_dev_size(leafsize)) {
+ if (btrfs_device_size(fd, &statbuf) < btrfs_min_dev_size(nodesize)) {
close(fd);
return 1;
}
*units = base | mode;
}
+
+int find_next_key(struct btrfs_path *path, struct btrfs_key *key)
+{
+ int level;
+
+ for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
+ if (!path->nodes[level])
+ break;
+ if (path->slots[level] + 1 >=
+ btrfs_header_nritems(path->nodes[level]))
+ continue;
+ if (level == 0)
+ btrfs_item_key_to_cpu(path->nodes[level], key,
+ path->slots[level] + 1);
+ else
+ btrfs_node_key_to_cpu(path->nodes[level], key,
+ path->slots[level] + 1);
+ return 0;
+ }
+ return 1;
+}
+
+char* btrfs_group_type_str(u64 flag)
+{
+ u64 mask = BTRFS_BLOCK_GROUP_TYPE_MASK |
+ BTRFS_SPACE_INFO_GLOBAL_RSV;
+
+ switch (flag & mask) {
+ case BTRFS_BLOCK_GROUP_DATA:
+ return "Data";
+ case BTRFS_BLOCK_GROUP_SYSTEM:
+ return "System";
+ case BTRFS_BLOCK_GROUP_METADATA:
+ return "Metadata";
+ case BTRFS_BLOCK_GROUP_DATA|BTRFS_BLOCK_GROUP_METADATA:
+ return "Data+Metadata";
+ case BTRFS_SPACE_INFO_GLOBAL_RSV:
+ return "GlobalReserve";
+ default:
+ return "unknown";
+ }
+}
+
+char* btrfs_group_profile_str(u64 flag)
+{
+ switch (flag & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
+ case 0:
+ return "single";
+ case BTRFS_BLOCK_GROUP_RAID0:
+ return "RAID0";
+ case BTRFS_BLOCK_GROUP_RAID1:
+ return "RAID1";
+ case BTRFS_BLOCK_GROUP_RAID5:
+ return "RAID5";
+ case BTRFS_BLOCK_GROUP_RAID6:
+ return "RAID6";
+ case BTRFS_BLOCK_GROUP_DUP:
+ return "DUP";
+ case BTRFS_BLOCK_GROUP_RAID10:
+ return "RAID10";
+ default:
+ return "unknown";
+ }
+}
+
+u64 disk_size(char *path)
+{
+ struct statfs sfs;
+
+ if (statfs(path, &sfs) < 0)
+ return 0;
+ else
+ return sfs.f_bsize * sfs.f_blocks;
+}
+
+u64 get_partition_size(char *dev)
+{
+ u64 result;
+ int fd = open(dev, O_RDONLY);
+
+ if (fd < 0)
+ return 0;
+ if (ioctl(fd, BLKGETSIZE64, &result) < 0) {
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ return result;
+}
+
+int btrfs_tree_search2_ioctl_supported(int fd)
+{
+ struct btrfs_ioctl_search_args_v2 *args2;
+ struct btrfs_ioctl_search_key *sk;
+ int args2_size = 1024;
+ char args2_buf[args2_size];
+ int ret;
+ static int v2_supported = -1;
+
+ if (v2_supported != -1)
+ return v2_supported;
+
+ args2 = (struct btrfs_ioctl_search_args_v2 *)args2_buf;
+ sk = &(args2->key);
+
+ /*
+ * Search for the extent tree item in the root tree.
+ */
+ sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
+ sk->min_objectid = BTRFS_EXTENT_TREE_OBJECTID;
+ sk->max_objectid = BTRFS_EXTENT_TREE_OBJECTID;
+ sk->min_type = BTRFS_ROOT_ITEM_KEY;
+ sk->max_type = BTRFS_ROOT_ITEM_KEY;
+ sk->min_offset = 0;
+ sk->max_offset = (u64)-1;
+ sk->min_transid = 0;
+ sk->max_transid = (u64)-1;
+ sk->nr_items = 1;
+ args2->buf_size = args2_size - sizeof(struct btrfs_ioctl_search_args_v2);
+ ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH_V2, args2);
+ if (ret == -EOPNOTSUPP)
+ v2_supported = 0;
+ else if (ret == 0)
+ v2_supported = 1;
+ else
+ return ret;
+
+ return v2_supported;
+}
+
+int btrfs_check_nodesize(u32 nodesize, u32 sectorsize)
+{
+ if (nodesize < sectorsize) {
+ fprintf(stderr,
+ "ERROR: Illegal nodesize %u (smaller than %u)\n",
+ nodesize, sectorsize);
+ return -1;
+ } else if (nodesize > BTRFS_MAX_METADATA_BLOCKSIZE) {
+ fprintf(stderr,
+ "ERROR: Illegal nodesize %u (larger than %u)\n",
+ nodesize, BTRFS_MAX_METADATA_BLOCKSIZE);
+ return -1;
+ } else if (nodesize & (sectorsize - 1)) {
+ fprintf(stderr,
+ "ERROR: Illegal nodesize %u (not aligned to %u)\n",
+ nodesize, sectorsize);
+ return -1;
+ }
+ return 0;
+}
projects / platform / upstream / btrfs-progs.git / blobdiff