static int cmd_device_usage(int argc, char **argv)
{
unsigned unit_mode;
int ret = 0;
int i;
unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
clean_args_no_options(argc, argv, cmd_device_usage_usage);
if (check_argc_min(argc - optind, 1))
usage(cmd_device_usage_usage);
for (i = optind; i < argc; i++) {
int fd;
DIR *dirstream = NULL;
if (i > 1)
printf("\n");
fd = btrfs_open_dir(argv[i], &dirstream, 1);
if (fd < 0) {
ret = 1;
break;
}
ret = _cmd_device_usage(fd, argv[i], unit_mode);
close_file_or_dir(fd, dirstream);
if (ret)
break;
}
return !!ret;
}
int main(int argc, char **argv)
{
char *path;
int fd;
int ret;
u64 flags = 0;
char *dir = "html";
DIR *dirstream = NULL;
while (1) {
int c = getopt(argc, argv, "cmso:h");
if (c < 0)
break;
switch (c) {
case 'c':
use_color = 1;
break;
case 'd':
flags |= BTRFS_BLOCK_GROUP_DATA;
break;
case 'm':
flags |= BTRFS_BLOCK_GROUP_METADATA;
break;
case 's':
flags |= BTRFS_BLOCK_GROUP_SYSTEM;
break;
case 'o':
dir = optarg;
break;
case 'h':
default:
fragments_usage();
}
}
set_argv0(argv);
if (check_argc_min(argc - optind, 1))
fragments_usage();
path = argv[optind++];
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
exit(1);
if (flags == 0)
flags = BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA;
ret = list_fragments(fd, flags, dir);
close_file_or_dir(fd, dirstream);
if (ret)
exit(1);
exit(0);
}
int main(int argc, char **argv)
{
int c;
unsigned long checksum = 0;
char *str;
char *buf;
int length = 10;
int seed = getpid() ^ getppid();
int loop = 0;
int i;
while ((c = getopt(argc, argv, "l:c:s:h")) != -1) {
switch (c) {
case 'l':
length = atol(optarg);
break;
case 'c':
sscanf(optarg, "%li", &checksum);
loop = 1;
break;
case 's':
seed = atol(optarg);
break;
case 'h':
usage();
case '?':
return 255;
}
}
set_argv0(argv);
str = argv[optind];
if (!loop) {
if (check_argc_min(argc - optind, 1))
return 255;
printf("%12u - %s\n", crc32c(~1, str, strlen(str)), str);
return 0;
}
buf = malloc(length);
if (!buf)
return -ENOMEM;
srand(seed);
while (1) {
for (i = 0; i < length; i++)
buf[i] = rand() % 94 + 33;
if (crc32c(~1, buf, length) == checksum)
printf("%12lu - %.*s\n", checksum, length, buf);
}
return 0;
}
int main(int argc, char **argv)
{
struct btrfs_root *root;
int dev_fd;
int opt;
int ret;
while ((opt = getopt(argc, argv, "l:o:g:")) != -1) {
switch(opt) {
case 'o':
search_objectid = arg_strtou64(optarg);
break;
case 'g':
search_generation = arg_strtou64(optarg);
break;
case 'l':
search_level = arg_strtou64(optarg);
break;
default:
usage();
exit(1);
}
}
set_argv0(argv);
argc = argc - optind;
if (check_argc_min(argc, 1)) {
usage();
exit(1);
}
dev_fd = open(argv[optind], O_RDONLY);
if (dev_fd < 0) {
fprintf(stderr, "Failed to open device %s\n", argv[optind]);
exit(1);
}
root = open_ctree_broken(dev_fd, argv[optind]);
close(dev_fd);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
if (search_generation == 0)
search_generation = btrfs_super_generation(root->fs_info->super_copy);
csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
ret = find_root(root);
close_ctree(root);
return ret;
}
static int cmd_rm_dev(int argc, char **argv)
{
char *mntpnt;
int i, fdmnt, ret=0, e;
DIR *dirstream = NULL;
if (check_argc_min(argc, 3))
usage(cmd_rm_dev_usage);
mntpnt = argv[argc - 1];
fdmnt = open_file_or_dir(mntpnt, &dirstream);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", mntpnt);
return 1;
}
for(i=1 ; i < argc - 1; i++ ){
struct btrfs_ioctl_vol_args arg;
int res;
if (!is_block_device(argv[i])) {
fprintf(stderr,
"ERROR: %s is not a block device\n", argv[i]);
ret++;
continue;
}
memset(&arg, 0, sizeof(arg));
strncpy_null(arg.name, argv[i]);
res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
e = errno;
if (res) {
const char *msg;
if (res > 0)
msg = btrfs_err_str(res);
else
msg = strerror(e);
fprintf(stderr,
"ERROR: error removing the device '%s' - %s\n",
argv[i], msg);
ret++;
}
}
close_file_or_dir(fdmnt, dirstream);
return !!ret;
}
static int cmd_ready_dev(int argc, char **argv)
{
struct btrfs_ioctl_vol_args args;
int fd;
int ret;
char *path;
if (check_argc_min(argc, 2))
usage(cmd_ready_dev_usage);
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0) {
perror("failed to open /dev/btrfs-control");
return 1;
}
path = canonicalize_path(argv[argc - 1]);
if (!path) {
fprintf(stderr,
"ERROR: Could not canonicalize pathname '%s': %s\n",
argv[argc - 1], strerror(errno));
ret = 1;
goto out;
}
if (!is_block_device(path)) {
fprintf(stderr,
"ERROR: %s is not a block device\n", path);
ret = 1;
goto out;
}
memset(&args, 0, sizeof(args));
strncpy_null(args.name, path);
ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
if (ret < 0) {
fprintf(stderr, "ERROR: unable to determine if the device '%s'"
" is ready for mounting - %s\n", path,
strerror(errno));
ret = 1;
}
out:
free(path);
close(fd);
return ret;
}
static int cmd_list(int argc, char **argv)
{
int ret;
char *object = NULL;
int types = 0;
if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
usage(cmd_list_usage);
parse_args(argc, argv, cmd_list_usage, &types, &object, NULL, NULL);
if (!object) {
fprintf(stderr, "ERROR: invalid arguments.\n");
usage(cmd_set_usage);
}
ret = dump_props(types, object, 1);
return ret;
}
static int cmd_set(int argc, char **argv)
{
int ret;
char *object;
char *name;
char *value;
int types = 0;
if (check_argc_min(argc, 4) || check_argc_max(argc, 5))
usage(cmd_set_usage);
parse_args(argc, argv, cmd_set_usage, &types, &object, &name, &value);
if (!object || !name || !value) {
fprintf(stderr, "ERROR: invalid arguments.\n");
usage(cmd_set_usage);
}
ret = setget_prop(types, object, name, value);
return ret;
}
static int cmd_get(int argc, char **argv)
{
int ret;
char *object;
char *name = NULL;
int types = 0;
if (check_argc_min(argc, 2) || check_argc_max(argc, 4))
usage(cmd_get_usage);
parse_args(argc, argv, cmd_get_usage, &types, &object, &name, NULL);
if (!object) {
fprintf(stderr, "ERROR: invalid arguments.\n");
usage(cmd_set_usage);
}
if (name)
ret = setget_prop(types, object, name, NULL);
else
ret = dump_props(types, object, 0);
return ret;
}
static int cmd_rm_dev(int argc, char **argv)
{
char *mntpnt;
int i, fdmnt, ret=0, e;
if (check_argc_min(argc, 3))
usage(cmd_rm_dev_usage);
mntpnt = argv[argc - 1];
fdmnt = open_file_or_dir(mntpnt);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
return 12;
}
for(i=1 ; i < argc - 1; i++ ){
struct btrfs_ioctl_vol_args arg;
int res;
strncpy(arg.name, argv[i], BTRFS_PATH_NAME_MAX);
arg.name[BTRFS_PATH_NAME_MAX-1] = 0;
res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
e = errno;
if(res<0){
fprintf(stderr, "ERROR: error removing the device '%s' - %s\n",
argv[i], strerror(e));
ret++;
}
}
close(fdmnt);
if( ret)
return ret+20;
else
return 0;
}
static int cmd_add_dev(int argc, char **argv)
{
char *mntpnt;
int i, fdmnt, ret=0, e;
if (check_argc_min(argc, 3))
usage(cmd_add_dev_usage);
mntpnt = argv[argc - 1];
fdmnt = open_file_or_dir(mntpnt);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
return 12;
}
for (i = 1; i < argc - 1; i++ ){
struct btrfs_ioctl_vol_args ioctl_args;
int devfd, res;
u64 dev_block_count = 0;
struct stat st;
int mixed = 0;
res = check_mounted(argv[i]);
if (res < 0) {
fprintf(stderr, "error checking %s mount status\n",
argv[i]);
ret++;
continue;
}
if (res == 1) {
fprintf(stderr, "%s is mounted\n", argv[i]);
ret++;
continue;
}
devfd = open(argv[i], O_RDWR);
if (!devfd) {
fprintf(stderr, "ERROR: Unable to open device '%s'\n", argv[i]);
close(devfd);
ret++;
continue;
}
res = fstat(devfd, &st);
if (res) {
fprintf(stderr, "ERROR: Unable to stat '%s'\n", argv[i]);
close(devfd);
ret++;
continue;
}
if (!S_ISBLK(st.st_mode)) {
fprintf(stderr, "ERROR: '%s' is not a block device\n", argv[i]);
close(devfd);
ret++;
continue;
}
res = btrfs_prepare_device(devfd, argv[i], 1, &dev_block_count,
0, &mixed, 0);
if (res) {
fprintf(stderr, "ERROR: Unable to init '%s'\n", argv[i]);
close(devfd);
ret++;
continue;
}
close(devfd);
strncpy(ioctl_args.name, argv[i], BTRFS_PATH_NAME_MAX);
ioctl_args.name[BTRFS_PATH_NAME_MAX-1] = 0;
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
e = errno;
if(res<0){
fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
argv[i], strerror(e));
ret++;
}
}
close(fdmnt);
if (ret)
return ret+20;
else
return 0;
}
int cmd_filesystem_usage(int argc, char **argv)
{
int ret = 0;
unsigned unit_mode;
int i;
int more_than_one = 0;
int tabular = 0;
unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
optind = 1;
while (1) {
int c;
c = getopt(argc, argv, "T");
if (c < 0)
break;
switch (c) {
case 'T':
tabular = 1;
break;
default:
usage(cmd_filesystem_usage_usage);
}
}
if (check_argc_min(argc - optind, 1))
usage(cmd_filesystem_usage_usage);
for (i = optind; i < argc; i++) {
int fd;
DIR *dirstream = NULL;
struct chunk_info *chunkinfo = NULL;
struct device_info *devinfo = NULL;
int chunkcount = 0;
int devcount = 0;
fd = open_file_or_dir(argv[i], &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n",
argv[i]);
ret = 1;
goto out;
}
if (more_than_one)
printf("\n");
ret = load_chunk_and_device_info(fd, &chunkinfo, &chunkcount,
&devinfo, &devcount);
if (ret)
goto cleanup;
ret = print_filesystem_usage_overall(fd, chunkinfo, chunkcount,
devinfo, devcount, argv[i], unit_mode);
if (ret)
goto cleanup;
printf("\n");
ret = print_filesystem_usage_by_chunk(fd, chunkinfo, chunkcount,
devinfo, devcount, argv[i], unit_mode, tabular);
cleanup:
close_file_or_dir(fd, dirstream);
free(chunkinfo);
free(devinfo);
if (ret)
goto out;
more_than_one = 1;
}
out:
return !!ret;
}
static void parse_args(int argc, char **argv,
const char * const *usage_str,
int *types, char **object,
char **name, char **value, int min_nonopt_args)
{
int ret;
char *type_str = NULL;
int max_nonopt_args = 1;
optind = 1;
while (1) {
int c = getopt(argc, argv, "t:");
if (c < 0)
break;
switch (c) {
case 't':
type_str = optarg;
break;
default:
usage(usage_str);
}
}
if (name)
max_nonopt_args++;
if (value)
max_nonopt_args++;
if (check_argc_min(argc - optind, min_nonopt_args) ||
check_argc_max(argc - optind, max_nonopt_args))
usage(usage_str);
*types = 0;
if (type_str) {
if (!strcmp(type_str, "s") || !strcmp(type_str, "subvol")) {
*types = prop_object_subvol;
} else if (!strcmp(type_str, "f") ||
!strcmp(type_str, "filesystem")) {
*types = prop_object_root;
} else if (!strcmp(type_str, "i") ||
!strcmp(type_str, "inode")) {
*types = prop_object_inode;
} else if (!strcmp(type_str, "d") ||
!strcmp(type_str, "device")) {
*types = prop_object_dev;
} else {
error("invalid object type: %s", type_str);
usage(usage_str);
}
}
*object = argv[optind++];
if (optind < argc)
*name = argv[optind++];
if (optind < argc)
*value = argv[optind++];
if (!*types) {
ret = autodetect_object_types(*object, types);
if (ret < 0) {
error("failed to detect object type: %s",
strerror(-ret));
usage(usage_str);
}
if (!*types) {
error("object is not a btrfs object: %s", *object);
usage(usage_str);
}
}
}
static int cmd_subvol_sync(int argc, char **argv)
{
int fd = -1;
int i;
int ret = 1;
DIR *dirstream = NULL;
u64 *ids = NULL;
int id_count;
int sleep_interval = 1;
optind = 1;
while (1) {
int c = getopt(argc, argv, "s:");
if (c < 0)
break;
switch (c) {
case 's':
sleep_interval = atoi(argv[optind]);
if (sleep_interval < 1) {
fprintf(stderr,
"ERROR: invalid sleep interval %s\n",
argv[optind]);
ret = 1;
goto out;
}
break;
default:
usage(cmd_subvol_sync_usage);
}
}
if (check_argc_min(argc - optind, 1))
usage(cmd_subvol_sync_usage);
fd = open_file_or_dir(argv[optind], &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind]);
ret = 1;
goto out;
}
optind++;
id_count = argc - optind;
if (!id_count) {
id_count = SUBVOL_ID_BATCH;
ids = (u64*)malloc(id_count * sizeof(u64));
if (!ids) {
fprintf(stderr, "ERROR: not enough memory\n");
ret = 1;
goto out;
}
id_count = enumerate_dead_subvols(fd, id_count, &ids);
if (id_count < 0) {
fprintf(stderr, "ERROR: can't enumerate dead subvolumes: %s\n",
strerror(-id_count));
ret = 1;
goto out;
}
if (id_count == 0) {
ret = 0;
goto out;
}
} else {
ids = (u64*)malloc(id_count * sizeof(u64));
if (!ids) {
fprintf(stderr, "ERROR: not enough memory\n");
ret = 1;
goto out;
}
for (i = 0; i < id_count; i++) {
u64 id;
const char *arg;
arg = argv[optind + i];
errno = 0;
id = strtoull(arg, NULL, 10);
if (errno < 0) {
fprintf(stderr,
"ERROR: unrecognized subvolume id %s\n",
arg);
ret = 1;
goto out;
}
if (id < BTRFS_FIRST_FREE_OBJECTID
|| id > BTRFS_LAST_FREE_OBJECTID) {
fprintf(stderr,
"ERROR: subvolume id %s out of range\n",
arg);
ret = 1;
goto out;
}
ids[i] = id;
}
}
ret = wait_for_subvolume_cleaning(fd, id_count, ids, sleep_interval);
out:
free(ids);
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_qgroup_limit(int argc, char **argv)
{
int ret = 0;
int fd;
int e;
char *path = NULL;
struct btrfs_ioctl_qgroup_limit_args args;
unsigned long long size;
int compressed = 0;
int exclusive = 0;
DIR *dirstream = NULL;
optind = 1;
while (1) {
int c = getopt(argc, argv, "ce");
if (c < 0)
break;
switch (c) {
case 'c':
compressed = 1;
break;
case 'e':
exclusive = 1;
break;
default:
usage(cmd_qgroup_limit_usage);
}
}
if (check_argc_min(argc - optind, 2))
usage(cmd_qgroup_limit_usage);
if (!parse_limit(argv[optind], &size)) {
error("invalid size argument: %s", argv[optind]);
return 1;
}
memset(&args, 0, sizeof(args));
if (compressed)
args.lim.flags |= BTRFS_QGROUP_LIMIT_RFER_CMPR |
BTRFS_QGROUP_LIMIT_EXCL_CMPR;
if (exclusive) {
args.lim.flags |= BTRFS_QGROUP_LIMIT_MAX_EXCL;
args.lim.max_exclusive = size;
} else {
args.lim.flags |= BTRFS_QGROUP_LIMIT_MAX_RFER;
args.lim.max_referenced = size;
}
if (argc - optind == 2) {
args.qgroupid = 0;
path = argv[optind + 1];
ret = test_issubvolume(path);
if (ret < 0) {
error("cannot access '%s': %s", path, strerror(-ret));
return 1;
}
if (!ret) {
error("'%s' is not a subvolume", path);
return 1;
}
/*
* keep qgroupid at 0, this indicates that the subvolume the
* fd refers to is to be limited
*/
} else if (argc - optind == 3) {
args.qgroupid = parse_qgroupid(argv[optind + 1]);
path = argv[optind + 2];
} else
usage(cmd_qgroup_limit_usage);
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_QGROUP_LIMIT, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
error("unable to limit requested quota group: %s", strerror(e));
return 1;
}
return 0;
}
static int cmd_add_dev(int argc, char **argv)
{
char *mntpnt;
int i, fdmnt, ret=0, e;
DIR *dirstream = NULL;
int discard = 1;
int force = 0;
while (1) {
int c;
static const struct option long_options[] = {
{ "nodiscard", optional_argument, NULL, 'K'},
{ "force", no_argument, NULL, 'f'},
{ NULL, 0, NULL, 0}
};
c = getopt_long(argc, argv, "Kf", long_options, NULL);
if (c < 0)
break;
switch (c) {
case 'K':
discard = 0;
break;
case 'f':
force = 1;
break;
default:
usage(cmd_add_dev_usage);
}
}
argc = argc - optind;
if (check_argc_min(argc, 2))
usage(cmd_add_dev_usage);
mntpnt = argv[optind + argc - 1];
fdmnt = open_file_or_dir(mntpnt, &dirstream);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", mntpnt);
return 1;
}
for (i = optind; i < optind + argc - 1; i++){
struct btrfs_ioctl_vol_args ioctl_args;
int devfd, res;
u64 dev_block_count = 0;
int mixed = 0;
char *path;
res = test_dev_for_mkfs(argv[i], force);
if (res) {
ret++;
continue;
}
devfd = open(argv[i], O_RDWR);
if (devfd < 0) {
fprintf(stderr, "ERROR: Unable to open device '%s'\n", argv[i]);
ret++;
continue;
}
res = btrfs_prepare_device(devfd, argv[i], 1, &dev_block_count,
0, &mixed, discard);
close(devfd);
if (res) {
ret++;
goto error_out;
}
path = canonicalize_path(argv[i]);
if (!path) {
fprintf(stderr,
"ERROR: Could not canonicalize pathname '%s': %s\n",
argv[i], strerror(errno));
ret++;
goto error_out;
}
memset(&ioctl_args, 0, sizeof(ioctl_args));
strncpy_null(ioctl_args.name, path);
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
e = errno;
if (res < 0) {
fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
path, strerror(e));
ret++;
}
free(path);
}
error_out:
close_file_or_dir(fdmnt, dirstream);
return !!ret;
}
int cmd_send(int argc, char **argv)
{
char *subvol = NULL;
int ret;
char outname[PATH_MAX];
struct btrfs_send send;
u32 i;
char *mount_root = NULL;
char *snapshot_parent = NULL;
u64 root_id = 0;
u64 parent_root_id = 0;
int full_send = 1;
int new_end_cmd_semantic = 0;
u64 send_flags = 0;
memset(&send, 0, sizeof(send));
send.dump_fd = fileno(stdout);
outname[0] = 0;
while (1) {
enum { GETOPT_VAL_SEND_NO_DATA = 256 };
static const struct option long_options[] = {
{ "verbose", no_argument, NULL, 'v' },
{ "quiet", no_argument, NULL, 'q' },
{ "no-data", no_argument, NULL, GETOPT_VAL_SEND_NO_DATA }
};
int c = getopt_long(argc, argv, "vqec:f:i:p:", long_options, NULL);
if (c < 0)
break;
switch (c) {
case 'v':
g_verbose++;
break;
case 'q':
g_verbose = 0;
break;
case 'e':
new_end_cmd_semantic = 1;
break;
case 'c':
subvol = realpath(optarg, NULL);
if (!subvol) {
ret = -errno;
error("realpath %s failed: %s\n", optarg, strerror(-ret));
goto out;
}
ret = set_root_info(&send, subvol, &root_id);
if (ret < 0)
goto out;
ret = is_subvol_ro(&send, subvol);
if (ret < 0)
goto out;
if (!ret) {
ret = -EINVAL;
error("cloned subvolume %s is not read-only", subvol);
goto out;
}
ret = add_clone_source(&send, root_id);
if (ret < 0) {
error("cannot add clone source: %s", strerror(-ret));
goto out;
}
free(subvol);
subvol = NULL;
free_send_info(&send);
full_send = 0;
break;
case 'f':
if (arg_copy_path(outname, optarg, sizeof(outname))) {
error("output file path too long (%zu)", strlen(optarg));
ret = 1;
goto out;
}
break;
case 'p':
if (snapshot_parent) {
error("you cannot have more than one parent (-p)");
ret = 1;
goto out;
}
snapshot_parent = realpath(optarg, NULL);
if (!snapshot_parent) {
ret = -errno;
error("realpath %s failed: %s", optarg, strerror(-ret));
goto out;
}
ret = is_subvol_ro(&send, snapshot_parent);
if (ret < 0)
goto out;
if (!ret) {
ret = -EINVAL;
error("parent subvolume %s is not read-only",
snapshot_parent);
goto out;
}
full_send = 0;
break;
case 'i':
error("option -i was removed, use -c instead");
ret = 1;
goto out;
case GETOPT_VAL_SEND_NO_DATA:
send_flags |= BTRFS_SEND_FLAG_NO_FILE_DATA;
break;
case '?':
default:
error("send arguments invalid");
ret = 1;
goto out;
}
}
if (check_argc_min(argc - optind, 1))
usage(cmd_send_usage);
if (outname[0]) {
int tmpfd;
/*
* Try to use an existing file first. Even if send runs as
* root, it might not have permissions to create file (eg. on a
* NFS) but it should still be able to use a pre-created file.
*/
tmpfd = open(outname, O_WRONLY | O_TRUNC);
if (tmpfd < 0) {
if (errno == ENOENT)
tmpfd = open(outname,
O_CREAT | O_WRONLY | O_TRUNC, 0600);
}
send.dump_fd = tmpfd;
if (send.dump_fd == -1) {
ret = -errno;
error("cannot create '%s': %s", outname, strerror(-ret));
goto out;
}
}
if (isatty(send.dump_fd)) {
error(
"not dumping send stream into a terminal, redirect it into a file");
ret = 1;
goto out;
}
/* use first send subvol to determine mount_root */
subvol = realpath(argv[optind], NULL);
if (!subvol) {
ret = -errno;
error("unable to resolve %s", argv[optind]);
goto out;
}
ret = init_root_path(&send, subvol);
if (ret < 0)
goto out;
if (snapshot_parent != NULL) {
ret = get_root_id(&send,
subvol_strip_mountpoint(send.root_path, snapshot_parent),
&parent_root_id);
if (ret < 0) {
error("could not resolve rootid for %s", snapshot_parent);
goto out;
}
ret = add_clone_source(&send, parent_root_id);
if (ret < 0) {
error("cannot add clone source: %s", strerror(-ret));
goto out;
}
}
for (i = optind; i < argc; i++) {
free(subvol);
subvol = realpath(argv[i], NULL);
if (!subvol) {
ret = -errno;
error("unable to resolve %s", argv[i]);
goto out;
}
ret = find_mount_root(subvol, &mount_root);
if (ret < 0) {
error("find_mount_root failed on %s: %s", subvol,
strerror(-ret));
goto out;
}
if (ret > 0) {
error("%s does not belong to btrfs mount point",
subvol);
ret = -EINVAL;
goto out;
}
if (strcmp(send.root_path, mount_root) != 0) {
ret = -EINVAL;
error("all subvolumes must be from the same filesystem");
goto out;
}
free(mount_root);
ret = is_subvol_ro(&send, subvol);
if (ret < 0)
goto out;
if (!ret) {
ret = -EINVAL;
error("subvolume %s is not read-only", subvol);
goto out;
}
}
if ((send_flags & BTRFS_SEND_FLAG_NO_FILE_DATA) && g_verbose > 1)
if (g_verbose > 1)
fprintf(stderr, "Mode NO_FILE_DATA enabled\n");
for (i = optind; i < argc; i++) {
int is_first_subvol;
int is_last_subvol;
free(subvol);
subvol = argv[i];
if (g_verbose > 0)
fprintf(stderr, "At subvol %s\n", subvol);
subvol = realpath(subvol, NULL);
if (!subvol) {
ret = -errno;
error("realpath %s failed: %s", argv[i], strerror(-ret));
goto out;
}
if (!full_send && !snapshot_parent) {
ret = set_root_info(&send, subvol, &root_id);
if (ret < 0)
goto out;
ret = find_good_parent(&send, root_id, &parent_root_id);
if (ret < 0) {
error("parent determination failed for %lld",
root_id);
goto out;
}
}
if (new_end_cmd_semantic) {
/* require new kernel */
is_first_subvol = (i == optind);
is_last_subvol = (i == argc - 1);
} else {
/* be compatible to old and new kernel */
is_first_subvol = 1;
is_last_subvol = 1;
}
ret = do_send(&send, parent_root_id, is_first_subvol,
is_last_subvol, subvol, send_flags);
if (ret < 0)
goto out;
if (!full_send && !snapshot_parent) {
/* done with this subvol, so add it to the clone sources */
ret = add_clone_source(&send, root_id);
if (ret < 0) {
error("cannot add clone source: %s", strerror(-ret));
goto out;
}
free_send_info(&send);
}
}
ret = 0;
out:
free(subvol);
free(snapshot_parent);
free(send.clone_sources);
free_send_info(&send);
return !!ret;
}
int main(int ac, char **av)
{
struct cache_tree root_cache;
struct btrfs_root *root;
char *dev;
char *output_file = NULL;
u64 copy = 0;
u64 logical = 0;
u64 bytes = 0;
u64 cur_logical = 0;
u64 cur_len = 0;
int out_fd = -1;
int found = 0;
int ret = 0;
while(1) {
int c;
static const struct option long_options[] = {
/* { "byte-count", 1, NULL, 'b' }, */
{ "logical", required_argument, NULL, 'l' },
{ "copy", required_argument, NULL, 'c' },
{ "output", required_argument, NULL, 'o' },
{ "bytes", required_argument, NULL, 'b' },
{ NULL, 0, NULL, 0}
};
c = getopt_long(ac, av, "l:c:o:b:", long_options, NULL);
if (c < 0)
break;
switch(c) {
case 'l':
logical = arg_strtou64(optarg);
break;
case 'c':
copy = arg_strtou64(optarg);
break;
case 'b':
bytes = arg_strtou64(optarg);
break;
case 'o':
output_file = strdup(optarg);
break;
default:
print_usage();
}
}
set_argv0(av);
ac = ac - optind;
if (check_argc_min(ac, 1))
print_usage();
if (logical == 0)
print_usage();
dev = av[optind];
radix_tree_init();
cache_tree_init(&root_cache);
root = open_ctree(dev, 0, 0);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
info_file = stdout;
if (output_file) {
if (strcmp(output_file, "-") == 0) {
out_fd = 1;
info_file = stderr;
} else {
out_fd = open(output_file, O_RDWR | O_CREAT, 0600);
if (out_fd < 0)
goto close;
ret = ftruncate(out_fd, 0);
if (ret) {
ret = 1;
close(out_fd);
goto close;
}
info_file = stdout;
}
}
if (bytes == 0)
bytes = root->nodesize;
cur_logical = logical;
cur_len = bytes;
/* First find the nearest extent */
ret = map_one_extent(root->fs_info, &cur_logical, &cur_len, 0);
if (ret < 0) {
fprintf(stderr, "Failed to find extent at [%llu,%llu): %s\n",
cur_logical, cur_logical + cur_len, strerror(-ret));
goto out_close_fd;
}
/*
* Normally, search backward should be OK, but for special case like
* given logical is quite small where no extents are before it,
* we need to search forward.
*/
if (ret > 0) {
ret = map_one_extent(root->fs_info, &cur_logical, &cur_len, 1);
if (ret < 0) {
fprintf(stderr,
"Failed to find extent at [%llu,%llu): %s\n",
cur_logical, cur_logical + cur_len,
strerror(-ret));
goto out_close_fd;
}
if (ret > 0) {
fprintf(stderr,
"Failed to find any extent at [%llu,%llu)\n",
cur_logical, cur_logical + cur_len);
goto out_close_fd;
}
}
while (cur_logical + cur_len >= logical && cur_logical < logical +
bytes) {
u64 real_logical;
u64 real_len;
found = 1;
ret = map_one_extent(root->fs_info, &cur_logical, &cur_len, 1);
if (ret < 0)
goto out_close_fd;
if (ret > 0)
break;
real_logical = max(logical, cur_logical);
real_len = min(logical + bytes, cur_logical + cur_len) -
real_logical;
ret = print_mapping_info(root->fs_info, real_logical, real_len);
if (ret < 0)
goto out_close_fd;
if (output_file && out_fd != -1) {
ret = write_extent_content(root->fs_info, out_fd,
real_logical, real_len, copy);
if (ret < 0)
goto out_close_fd;
}
cur_logical += cur_len;
}
if (!found) {
fprintf(stderr, "No extent found at range [%llu,%llu)\n",
logical, logical + bytes);
}
out_close_fd:
if (output_file && out_fd != 1)
close(out_fd);
close:
close_ctree(root);
if (ret < 0)
ret = 1;
return ret;
}
int cmd_inspect_dump_super(int argc, char **argv)
{
int all = 0;
int full = 0;
int force = 0;
char *filename;
int fd = -1;
int i;
int ret = 0;
u64 arg;
u64 sb_bytenr = btrfs_sb_offset(0);
while (1) {
int c;
enum { GETOPT_VAL_BYTENR = 257 };
static const struct option long_options[] = {
{"all", no_argument, NULL, 'a'},
{"bytenr", required_argument, NULL, GETOPT_VAL_BYTENR },
{"full", no_argument, NULL, 'f'},
{"force", no_argument, NULL, 'F'},
{"super", required_argument, NULL, 's' },
{NULL, 0, NULL, 0}
};
c = getopt_long(argc, argv, "fFai:s:", long_options, NULL);
if (c < 0)
break;
switch (c) {
case 'i':
warning(
"option -i is deprecated, please use -s or --super");
arg = arg_strtou64(optarg);
if (arg >= BTRFS_SUPER_MIRROR_MAX) {
error("super mirror too big: %llu >= %d",
arg, BTRFS_SUPER_MIRROR_MAX);
return 1;
}
sb_bytenr = btrfs_sb_offset(arg);
break;
case 'a':
all = 1;
break;
case 'f':
full = 1;
break;
case 'F':
force = 1;
break;
case 's':
arg = arg_strtou64(optarg);
if (BTRFS_SUPER_MIRROR_MAX <= arg) {
warning(
"deprecated use of -s <bytenr> with %llu, assuming --bytenr",
(unsigned long long)arg);
sb_bytenr = arg;
} else {
sb_bytenr = btrfs_sb_offset(arg);
}
all = 0;
break;
case GETOPT_VAL_BYTENR:
arg = arg_strtou64(optarg);
sb_bytenr = arg;
all = 0;
break;
default:
usage_unknown_option(cmd_inspect_dump_super_usage, argv);
}
}
if (check_argc_min(argc - optind, 1))
return 1;
for (i = optind; i < argc; i++) {
filename = argv[i];
fd = open(filename, O_RDONLY);
if (fd < 0) {
error("cannot open %s: %m", filename);
ret = 1;
goto out;
}
if (all) {
int idx;
for (idx = 0; idx < BTRFS_SUPER_MIRROR_MAX; idx++) {
sb_bytenr = btrfs_sb_offset(idx);
if (load_and_dump_sb(filename, fd,
sb_bytenr, full, force)) {
close(fd);
ret = 1;
goto out;
}
putchar('\n');
}
} else {
load_and_dump_sb(filename, fd, sb_bytenr, full, force);
putchar('\n');
}
close(fd);
}
out:
return ret;
}
int cmd_device_usage(int argc, char **argv)
{
unsigned unit_mode = UNITS_DEFAULT;
int ret = 0;
int i, more_than_one = 0;
optind = 1;
while (1) {
int c;
static const struct option long_options[] = {
{ "raw", no_argument, NULL, 'b'},
{ "kbytes", no_argument, NULL, 'k'},
{ "mbytes", no_argument, NULL, 'm'},
{ "gbytes", no_argument, NULL, 'g'},
{ "tbytes", no_argument, NULL, 't'},
{ "si", no_argument, NULL, GETOPT_VAL_SI},
{ "iec", no_argument, NULL, GETOPT_VAL_IEC},
{ "human-readable", no_argument, NULL,
GETOPT_VAL_HUMAN_READABLE},
{ NULL, 0, NULL, 0 }
};
c = getopt_long(argc, argv, "bhHkmgt", long_options, NULL);
if (c < 0)
break;
switch (c) {
case 'b':
unit_mode = UNITS_RAW;
break;
case 'k':
units_set_base(&unit_mode, UNITS_KBYTES);
break;
case 'm':
units_set_base(&unit_mode, UNITS_MBYTES);
break;
case 'g':
units_set_base(&unit_mode, UNITS_GBYTES);
break;
case 't':
units_set_base(&unit_mode, UNITS_TBYTES);
break;
case GETOPT_VAL_HUMAN_READABLE:
case 'h':
unit_mode = UNITS_HUMAN_BINARY;
break;
case 'H':
unit_mode = UNITS_HUMAN_DECIMAL;
break;
case GETOPT_VAL_SI:
units_set_mode(&unit_mode, UNITS_DECIMAL);
break;
case GETOPT_VAL_IEC:
units_set_mode(&unit_mode, UNITS_BINARY);
break;
default:
usage(cmd_device_usage_usage);
}
}
if (check_argc_min(argc - optind, 1))
usage(cmd_device_usage_usage);
for (i = optind; i < argc ; i++) {
int fd;
DIR *dirstream = NULL;
if (more_than_one)
printf("\n");
fd = open_file_or_dir(argv[i], &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n",
argv[1]);
ret = 1;
goto out;
}
ret = _cmd_device_usage(fd, argv[i], unit_mode);
close_file_or_dir(fd, dirstream);
if (ret)
goto out;
more_than_one = 1;
}
out:
return !!ret;
}
static int cmd_subvol_sync(int argc, char **argv)
{
int fd = -1;
int i;
int ret = 1;
DIR *dirstream = NULL;
u64 *ids = NULL;
int id_count;
int remaining;
int sleep_interval = 1;
optind = 1;
while (1) {
int c = getopt(argc, argv, "s:");
if (c < 0)
break;
switch (c) {
case 's':
sleep_interval = atoi(argv[optind]);
if (sleep_interval < 1) {
fprintf(stderr,
"ERROR: invalid sleep interval %s\n",
argv[optind]);
ret = 1;
goto out;
}
break;
default:
usage(cmd_subvol_sync_usage);
}
}
if (check_argc_min(argc - optind, 1))
usage(cmd_subvol_sync_usage);
fd = open_file_or_dir(argv[optind], &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind]);
ret = 1;
goto out;
}
optind++;
id_count = argc - optind;
/*
* Wait for all
*/
if (!id_count) {
while (1) {
ret = fs_has_dead_subvolumes(fd);
if (ret < 0) {
fprintf(stderr, "ERROR: can't perform the search - %s\n",
strerror(-ret));
ret = 1;
goto out;
}
if (!ret)
goto out;
sleep(sleep_interval);
}
}
/*
* Wait only for the requested ones
*/
ids = (u64*)malloc(sizeof(u64) * id_count);
if (!ids) {
fprintf(stderr, "ERROR: not enough memory\n");
ret = 1;
goto out;
}
for (i = 0; i < id_count; i++) {
u64 id;
const char *arg;
arg = argv[optind + i];
errno = 0;
id = strtoull(arg, NULL, 10);
if (errno < 0) {
fprintf(stderr, "ERROR: unrecognized subvolume id %s\n",
arg);
ret = 1;
goto out;
}
if (id < BTRFS_FIRST_FREE_OBJECTID || id > BTRFS_LAST_FREE_OBJECTID) {
fprintf(stderr, "ERROR: subvolume id %s out of range\n",
arg);
ret = 1;
goto out;
}
ids[i] = id;
}
remaining = id_count;
while (1) {
for (i = 0; i < id_count; i++) {
if (!ids[i])
continue;
ret = is_subvolume_cleaned(fd, ids[i]);
if (ret < 0) {
fprintf(stderr, "ERROR: can't perform the search - %s\n",
strerror(-ret));
goto out;
}
if (ret) {
printf("Subvolume id %llu is gone\n", ids[i]);
ids[i] = 0;
remaining--;
}
}
if (!remaining)
break;
sleep(sleep_interval);
}
out:
free(ids);
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int _cmd_device_remove(int argc, char **argv,
const char * const *usagestr)
{
char *mntpnt;
int i, fdmnt, ret = 0;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, usagestr);
if (check_argc_min(argc - optind, 2))
usage(usagestr);
mntpnt = argv[argc - 1];
fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1);
if (fdmnt < 0)
return 1;
for(i = optind; i < argc - 1; i++) {
struct btrfs_ioctl_vol_args arg;
struct btrfs_ioctl_vol_args_v2 argv2 = {0};
int is_devid = 0;
int res;
if (string_is_numerical(argv[i])) {
argv2.devid = arg_strtou64(argv[i]);
argv2.flags = BTRFS_DEVICE_SPEC_BY_ID;
is_devid = 1;
} else if (is_block_device(argv[i]) == 1 ||
strcmp(argv[i], "missing") == 0) {
strncpy_null(argv2.name, argv[i]);
} else {
error("not a block device: %s", argv[i]);
ret++;
continue;
}
/*
* Positive values are from BTRFS_ERROR_DEV_*,
* otherwise it's a generic error, one of errnos
*/
res = ioctl(fdmnt, BTRFS_IOC_RM_DEV_V2, &argv2);
/*
* If BTRFS_IOC_RM_DEV_V2 is not supported we get ENOTTY and if
* argv2.flags includes a flag which kernel doesn't understand then
* we shall get EOPNOTSUPP
*/
if (res < 0 && (errno == ENOTTY || errno == EOPNOTSUPP)) {
if (is_devid) {
error("device delete by id failed: %m");
ret++;
continue;
}
memset(&arg, 0, sizeof(arg));
strncpy_null(arg.name, argv[i]);
res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
}
if (res) {
const char *msg;
if (res > 0)
msg = btrfs_err_str(res);
else
msg = strerror(errno);
if (is_devid) {
error("error removing devid %llu: %s",
(unsigned long long)argv2.devid, msg);
} else {
error("error removing device '%s': %s",
argv[i], msg);
}
ret++;
}
}
close_file_or_dir(fdmnt, dirstream);
return !!ret;
}
static int cmd_subvol_delete(int argc, char **argv)
{
int res, e, ret = 0;
int cnt;
int fd = -1;
struct btrfs_ioctl_vol_args args;
char *dname, *vname, *cpath;
char *dupdname = NULL;
char *dupvname = NULL;
char *path;
DIR *dirstream = NULL;
int verbose = 0;
int commit_mode = 0;
optind = 1;
while (1) {
int c;
static const struct option long_options[] = {
{"commit-after", no_argument, NULL, 'c'}, /* commit mode 1 */
{"commit-each", no_argument, NULL, 'C'}, /* commit mode 2 */
{NULL, 0, NULL, 0}
};
c = getopt_long(argc, argv, "cC", long_options, NULL);
if (c < 0)
break;
switch(c) {
case 'c':
commit_mode = 1;
break;
case 'C':
commit_mode = 2;
break;
case 'v':
verbose++;
break;
default:
usage(cmd_subvol_delete_usage);
}
}
if (check_argc_min(argc - optind, 1))
usage(cmd_subvol_delete_usage);
if (verbose > 0) {
printf("Transaction commit: %s\n",
!commit_mode ? "none (default)" :
commit_mode == 1 ? "at the end" : "after each");
}
cnt = optind;
again:
path = argv[cnt];
res = test_issubvolume(path);
if (res < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", path);
ret = 1;
goto out;
}
if (!res) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", path);
ret = 1;
goto out;
}
cpath = realpath(path, NULL);
if (!cpath) {
ret = errno;
fprintf(stderr, "ERROR: finding real path for '%s': %s\n",
path, strerror(errno));
goto out;
}
dupdname = strdup(cpath);
dname = dirname(dupdname);
dupvname = strdup(cpath);
vname = basename(dupvname);
free(cpath);
fd = open_file_or_dir(dname, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", dname);
ret = 1;
goto out;
}
printf("Delete subvolume (%s): '%s/%s'\n",
commit_mode == 2 || (commit_mode == 1 && cnt + 1 == argc)
? "commit" : "no-commit", dname, vname);
memset(&args, 0, sizeof(args));
strncpy_null(args.name, vname);
res = ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &args);
e = errno;
if(res < 0 ){
fprintf( stderr, "ERROR: cannot delete '%s/%s' - %s\n",
dname, vname, strerror(e));
ret = 1;
goto out;
}
if (commit_mode == 1) {
res = wait_for_commit(fd);
if (res < 0) {
fprintf(stderr,
"ERROR: unable to wait for commit after '%s': %s\n",
path, strerror(errno));
ret = 1;
}
}
out:
free(dupdname);
free(dupvname);
dupdname = NULL;
dupvname = NULL;
cnt++;
if (cnt < argc) {
close_file_or_dir(fd, dirstream);
/* avoid double free */
fd = -1;
dirstream = NULL;
goto again;
}
if (commit_mode == 2 && fd != -1) {
res = wait_for_commit(fd);
if (res < 0) {
fprintf(stderr,
"ERROR: unable to do final sync: %s\n",
strerror(errno));
ret = 1;
}
}
close_file_or_dir(fd, dirstream);
return ret;
}
static int cmd_device_add(int argc, char **argv)
{
char *mntpnt;
int i, fdmnt, ret = 0;
DIR *dirstream = NULL;
int discard = 1;
int force = 0;
int last_dev;
optind = 0;
while (1) {
int c;
static const struct option long_options[] = {
{ "nodiscard", optional_argument, NULL, 'K'},
{ "force", no_argument, NULL, 'f'},
{ NULL, 0, NULL, 0}
};
c = getopt_long(argc, argv, "Kf", long_options, NULL);
if (c < 0)
break;
switch (c) {
case 'K':
discard = 0;
break;
case 'f':
force = 1;
break;
default:
usage(cmd_device_add_usage);
}
}
if (check_argc_min(argc - optind, 2))
usage(cmd_device_add_usage);
last_dev = argc - 1;
mntpnt = argv[last_dev];
fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1);
if (fdmnt < 0)
return 1;
for (i = optind; i < last_dev; i++){
struct btrfs_ioctl_vol_args ioctl_args;
int devfd, res;
u64 dev_block_count = 0;
char *path;
res = test_dev_for_mkfs(argv[i], force);
if (res) {
ret++;
continue;
}
devfd = open(argv[i], O_RDWR);
if (devfd < 0) {
error("unable to open device '%s'", argv[i]);
ret++;
continue;
}
res = btrfs_prepare_device(devfd, argv[i], &dev_block_count, 0,
PREP_DEVICE_ZERO_END | PREP_DEVICE_VERBOSE |
(discard ? PREP_DEVICE_DISCARD : 0));
close(devfd);
if (res) {
ret++;
goto error_out;
}
path = canonicalize_path(argv[i]);
if (!path) {
error("could not canonicalize pathname '%s': %m",
argv[i]);
ret++;
goto error_out;
}
memset(&ioctl_args, 0, sizeof(ioctl_args));
strncpy_null(ioctl_args.name, path);
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
if (res < 0) {
error("error adding device '%s': %m", path);
ret++;
}
free(path);
}
error_out:
close_file_or_dir(fdmnt, dirstream);
return !!ret;
}
int main(int argc, char **argv)
{
int opt;
int all = 0;
int full = 0;
int force = 0;
char *filename;
int fd = -1;
int i;
u64 arg;
u64 sb_bytenr = btrfs_sb_offset(0);
while ((opt = getopt(argc, argv, "fFai:s:")) != -1) {
switch (opt) {
case 'i':
arg = arg_strtou64(optarg);
if (arg >= BTRFS_SUPER_MIRROR_MAX) {
fprintf(stderr,
"Illegal super_mirror %llu\n",
arg);
print_usage();
exit(1);
}
sb_bytenr = btrfs_sb_offset(arg);
break;
case 'a':
all = 1;
break;
case 'f':
full = 1;
break;
case 'F':
force = 1;
break;
case 's':
sb_bytenr = arg_strtou64(optarg);
all = 0;
break;
default:
print_usage();
exit(1);
}
}
set_argv0(argv);
if (check_argc_min(argc - optind, 1)) {
print_usage();
exit(1);
}
for (i = optind; i < argc; i++) {
filename = argv[i];
fd = open(filename, O_RDONLY, 0666);
if (fd < 0) {
fprintf(stderr, "Could not open %s\n", filename);
exit(1);
}
if (all) {
int idx;
for (idx = 0; idx < BTRFS_SUPER_MIRROR_MAX; idx++) {
sb_bytenr = btrfs_sb_offset(idx);
if (load_and_dump_sb(filename, fd,
sb_bytenr, full, force)) {
close(fd);
exit(1);
}
putchar('\n');
}
} else {
load_and_dump_sb(filename, fd, sb_bytenr, full, force);
putchar('\n');
}
close(fd);
}
exit(0);
}
int main(int argc, char **argv)
{
struct btrfs_fs_info *fs_info;
struct btrfs_find_root_filter filter = {0};
struct cache_tree result;
struct cache_extent *found;
int ret;
/* Default to search root tree */
filter.objectid = BTRFS_ROOT_TREE_OBJECTID;
filter.match_gen = (u64)-1;
filter.match_level = (u8)-1;
while (1) {
static const struct option long_options[] = {
{ "help", no_argument, NULL, GETOPT_VAL_HELP},
{ NULL, 0, NULL, 0 }
};
int c = getopt_long(argc, argv, "al:o:g:", long_options, NULL);
if (c < 0)
break;
switch (c) {
case 'a':
filter.search_all = 1;
break;
case 'o':
filter.objectid = arg_strtou64(optarg);
break;
case 'g':
filter.generation = arg_strtou64(optarg);
break;
case 'l':
filter.level = arg_strtou64(optarg);
break;
case GETOPT_VAL_HELP:
default:
find_root_usage();
exit(c != GETOPT_VAL_HELP);
}
}
set_argv0(argv);
if (check_argc_min(argc - optind, 1)) {
find_root_usage();
exit(1);
}
fs_info = open_ctree_fs_info(argv[optind], 0, 0, 0,
OPEN_CTREE_CHUNK_ROOT_ONLY |
OPEN_CTREE_IGNORE_CHUNK_TREE_ERROR);
if (!fs_info) {
error("open ctree failed");
exit(1);
}
cache_tree_init(&result);
get_root_gen_and_level(filter.objectid, fs_info,
&filter.match_gen, &filter.match_level);
ret = btrfs_find_root_search(fs_info, &filter, &result, &found);
if (ret < 0) {
fprintf(stderr, "Fail to search the tree root: %s\n",
strerror(-ret));
goto out;
}
if (ret > 0) {
printf("Found tree root at %llu gen %llu level %u\n",
found->start, filter.match_gen, filter.match_level);
ret = 0;
}
print_find_root_result(&result, &filter);
out:
btrfs_find_root_free(&result);
close_ctree_fs_info(fs_info);
btrfs_close_all_devices();
return ret;
}
