int main(int argc, char **argv)
{
int c;
unsigned long checksum = 0;
char *str;
char *buf;
int length = 10;
u64 seed = 0;
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 = atoll(optarg);
break;
case 'h':
print_usage(1);
case '?':
print_usage(255);
}
}
set_argv0(argv);
str = argv[optind];
if (!loop) {
if (check_argc_exact(argc - optind, 1))
print_usage(255);
printf("%12u - %s\n", crc32c(~1, str, strlen(str)), str);
return 0;
}
if (check_argc_exact(argc - optind, 0))
print_usage(255);
buf = malloc(length);
if (!buf)
return -ENOMEM;
if (seed)
init_rand_seed(seed);
while (1) {
for (i = 0; i < length; i++)
buf[i] = rand_range(94) + 33;
if (crc32c(~1, buf, length) == checksum)
printf("%12lu - %.*s\n", checksum, length, buf);
}
return 0;
}
static int cmd_balance_pause(int argc, char **argv)
{
const char *path;
int fd;
int ret;
int e;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 2))
usage(cmd_balance_pause_usage);
path = argv[1];
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", path);
return 1;
}
ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
fprintf(stderr, "ERROR: balance pause on '%s' failed - %s\n",
path, (e == ENOTCONN) ? "Not running" : strerror(e));
if (e == ENOTCONN)
return 2;
else
return 1;
}
return 0;
}
static int cmd_inspect_subvolid_resolve(int argc, char **argv)
{
int ret;
int fd = -1;
u64 subvol_id;
char path[PATH_MAX];
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_inspect_subvolid_resolve_usage);
if (check_argc_exact(argc - optind, 2))
usage(cmd_inspect_subvolid_resolve_usage);
fd = btrfs_open_dir(argv[optind + 1], &dirstream, 1);
if (fd < 0) {
ret = -ENOENT;
goto out;
}
subvol_id = arg_strtou64(argv[optind]);
ret = btrfs_subvolid_resolve(fd, path, sizeof(path), subvol_id);
if (ret) {
error("resolving subvolid %llu error %d",
(unsigned long long)subvol_id, ret);
goto out;
}
path[PATH_MAX - 1] = '\0';
printf("%s\n", path);
out:
close_file_or_dir(fd, dirstream);
return ret ? 1 : 0;
}
static int qgroup_create(int create, int argc, char **argv)
{
int ret = 0;
int fd;
int e;
char *path = argv[2];
struct btrfs_ioctl_qgroup_create_args args;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 3))
return -1;
memset(&args, 0, sizeof(args));
args.create = create;
args.qgroupid = parse_qgroupid(argv[1]);
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", path);
return 1;
}
ret = ioctl(fd, BTRFS_IOC_QGROUP_CREATE, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
fprintf(stderr, "ERROR: unable to %s quota group: %s\n",
create ? "create":"destroy", strerror(e));
return 1;
}
return 0;
}
static int cmd_subvol_set_default(int argc, char **argv)
{
int ret=0, fd, e;
u64 objectid;
char *path;
char *subvolid;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_subvol_set_default_usage);
if (check_argc_exact(argc - optind, 2))
usage(cmd_subvol_set_default_usage);
subvolid = argv[optind];
path = argv[optind + 1];
objectid = arg_strtou64(subvolid);
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
error("unable to set a new default subvolume: %s",
strerror(e));
return 1;
}
return 0;
}
static int cmd_inspect_rootid(int argc, char **argv)
{
int ret;
int fd = -1;
u64 rootid;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_inspect_rootid_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_inspect_rootid_usage);
fd = btrfs_open_dir(argv[optind], &dirstream, 1);
if (fd < 0) {
ret = -ENOENT;
goto out;
}
ret = lookup_ino_rootid(fd, &rootid);
if (ret) {
error("rootid failed with ret=%d", ret);
goto out;
}
printf("%llu\n", (unsigned long long)rootid);
out:
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_inspect_inode_resolve(int argc, char **argv)
{
int fd;
int verbose = 0;
int ret;
DIR *dirstream = NULL;
optind = 1;
while (1) {
int c = getopt(argc, argv, "v");
if (c < 0)
break;
switch (c) {
case 'v':
verbose = 1;
break;
default:
usage(cmd_inspect_inode_resolve_usage);
}
}
if (check_argc_exact(argc - optind, 2))
usage(cmd_inspect_inode_resolve_usage);
fd = btrfs_open_dir(argv[optind + 1], &dirstream, 1);
if (fd < 0)
return 1;
ret = __ino_to_path_fd(arg_strtou64(argv[optind]), fd, verbose,
argv[optind+1]);
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_balance_cancel(int argc, char **argv)
{
const char *path;
int fd;
int ret;
int e;
if (check_argc_exact(argc, 2))
usage(cmd_balance_cancel_usage);
path = argv[1];
fd = open_file_or_dir(path);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", path);
return 12;
}
ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL);
e = errno;
close(fd);
if (ret < 0) {
fprintf(stderr, "ERROR: balance cancel on '%s' failed - %s\n",
path, (e == ENOTCONN) ? "Not in progress" : strerror(e));
return 19;
}
return 0;
}
static int _cmd_qgroup_create(int create, int argc, char **argv)
{
int ret = 0;
int fd;
int e;
char *path;
struct btrfs_ioctl_qgroup_create_args args;
DIR *dirstream = NULL;
if (check_argc_exact(argc - optind, 2))
return -1;
memset(&args, 0, sizeof(args));
args.create = create;
args.qgroupid = parse_qgroupid(argv[optind]);
path = argv[optind + 1];
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_QGROUP_CREATE, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
error("unable to %s quota group: %s",
create ? "create":"destroy", strerror(e));
return 1;
}
return 0;
}
static int quota_ctl(int cmd, int argc, char **argv)
{
int ret = 0;
int fd;
int e;
char *path = argv[1];
struct btrfs_ioctl_quota_ctl_args args;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 2))
return -1;
memset(&args, 0, sizeof(args));
args.cmd = cmd;
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", path);
return 1;
}
ret = ioctl(fd, BTRFS_IOC_QUOTA_CTL, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
fprintf(stderr, "ERROR: quota command failed: %s\n",
strerror(e));
return 1;
}
return 0;
}
static int cmd_subvol_set_default(int argc, char **argv)
{
int ret=0, fd, e;
u64 objectid;
char *path;
char *subvolid;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 3))
usage(cmd_subvol_set_default_usage);
subvolid = argv[1];
path = argv[2];
objectid = arg_strtou64(subvolid);
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", path);
return 1;
}
ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
fprintf(stderr, "ERROR: unable to set a new default subvolume - %s\n",
strerror(e));
return 1;
}
return 0;
}
static int cmd_balance_pause(int argc, char **argv)
{
const char *path;
int fd;
int ret;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_balance_pause_usage);
if (check_argc_exact(argc - optind, 1))
return 1;
path = argv[optind];
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE);
if (ret < 0) {
error("balance pause on '%s' failed: %s", path,
(errno == ENOTCONN) ? "Not running" : strerror(errno));
if (errno == ENOTCONN)
ret = 2;
else
ret = 1;
}
close_file_or_dir(fd, dirstream);
return ret;
}
int main(int ac, char **av)
{
struct btrfs_root *root;
struct btrfs_trans_handle *trans;
int ret;
set_argv0(av);
if (check_argc_exact(ac, 2))
print_usage();
radix_tree_init();
if((ret = check_mounted(av[1])) < 0) {
fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
goto out;
} else if(ret) {
fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
ret = -EBUSY;
goto out;
}
root = open_ctree(av[1], 0, OPEN_CTREE_WRITES);
if (root == NULL)
return 1;
trans = btrfs_start_transaction(root, 1);
btrfs_set_super_log_root(root->fs_info->super_copy, 0);
btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
btrfs_commit_transaction(trans, root);
close_ctree(root);
out:
return !!ret;
}
static int cmd_balance_cancel(int argc, char **argv)
{
const char *path;
int fd;
int ret;
int e;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_balance_cancel_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_balance_cancel_usage);
path = argv[optind];
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
error("balance cancel on '%s' failed: %s", path,
(e == ENOTCONN) ? "Not in progress" : strerror(e));
if (e == ENOTCONN)
return 2;
else
return 1;
}
return 0;
}
static int cmd_subvol_get_default(int argc, char **argv)
{
int fd = -1;
int ret;
char *subvol;
struct btrfs_list_filter_set *filter_set;
u64 default_id;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 2))
usage(cmd_subvol_get_default_usage);
subvol = argv[1];
fd = open_file_or_dir(subvol, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
return 1;
}
ret = btrfs_list_get_default_subvolume(fd, &default_id);
if (ret) {
fprintf(stderr, "ERROR: can't perform the search - %s\n",
strerror(errno));
goto out;
}
ret = 1;
if (default_id == 0) {
fprintf(stderr, "ERROR: 'default' dir item not found\n");
goto out;
}
/* no need to resolve roots if FS_TREE is default */
if (default_id == BTRFS_FS_TREE_OBJECTID) {
printf("ID 5 (FS_TREE)\n");
ret = 0;
goto out;
}
filter_set = btrfs_list_alloc_filter_set();
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
default_id);
/* by default we shall print the following columns*/
btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
ret = btrfs_list_subvols_print(fd, filter_set, NULL,
BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);
if (filter_set)
btrfs_list_free_filter_set(filter_set);
out:
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_subvol_get_default(int argc, char **argv)
{
int fd = -1;
int ret;
char *subvol;
struct btrfs_list_filter_set *filter_set;
u64 default_id;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_subvol_get_default_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_subvol_get_default_usage);
subvol = argv[1];
fd = btrfs_open_dir(subvol, &dirstream, 1);
if (fd < 0)
return 1;
ret = btrfs_list_get_default_subvolume(fd, &default_id);
if (ret) {
error("failed to look up default subvolume: %s",
strerror(errno));
goto out;
}
ret = 1;
if (default_id == 0) {
error("'default' dir item not found");
goto out;
}
/* no need to resolve roots if FS_TREE is default */
if (default_id == BTRFS_FS_TREE_OBJECTID) {
printf("ID 5 (FS_TREE)\n");
ret = 0;
goto out;
}
filter_set = btrfs_list_alloc_filter_set();
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
default_id);
/* by default we shall print the following columns*/
btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
ret = btrfs_list_subvols_print(fd, filter_set, NULL,
BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);
if (filter_set)
free(filter_set);
out:
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_balance_resume(int argc, char **argv)
{
struct btrfs_ioctl_balance_args args;
const char *path;
DIR *dirstream = NULL;
int fd;
int ret;
int e;
if (check_argc_exact(argc, 2))
usage(cmd_balance_resume_usage);
path = argv[1];
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", path);
return 1;
}
memset(&args, 0, sizeof(args));
args.flags |= BTRFS_BALANCE_RESUME;
ret = ioctl(fd, BTRFS_IOC_BALANCE_V2, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
if (e == ECANCELED) {
if (args.state & BTRFS_BALANCE_STATE_PAUSE_REQ)
fprintf(stderr, "balance paused by user\n");
if (args.state & BTRFS_BALANCE_STATE_CANCEL_REQ)
fprintf(stderr, "balance canceled by user\n");
} else if (e == ENOTCONN || e == EINPROGRESS) {
fprintf(stderr, "ERROR: balance resume on '%s' "
"failed - %s\n", path,
(e == ENOTCONN) ? "Not in progress" :
"Already running");
if (e == ENOTCONN)
return 2;
else
return 1;
} else {
fprintf(stderr,
"ERROR: error during balancing '%s' - %s\n"
"There may be more info in syslog - try dmesg | tail\n", path, strerror(e));
return 1;
}
} else {
printf("Done, had to relocate %llu out of %llu chunks\n",
(unsigned long long)args.stat.completed,
(unsigned long long)args.stat.considered);
}
return 0;
}
int cmd_receive(int argc, char **argv)
{
int c;
char *tomnt = NULL;
char *fromfile = NULL;
struct btrfs_receive r;
int receive_fd = fileno(stdin);
u64 max_errors = 1;
int ret;
memset(&r, 0, sizeof(r));
r.mnt_fd = -1;
r.write_fd = -1;
r.dest_dir_fd = -1;
while ((c = getopt_long(argc, argv, "evf:", long_opts, NULL)) != -1) {
switch (c) {
case 'v':
g_verbose++;
break;
case 'f':
fromfile = optarg;
break;
case 'e':
r.honor_end_cmd = 1;
break;
case 'E':
max_errors = arg_strtou64(optarg);
break;
case '?':
default:
fprintf(stderr, "ERROR: receive args invalid.\n");
return 1;
}
}
if (check_argc_exact(argc - optind, 1))
usage(cmd_receive_usage);
tomnt = argv[optind];
if (fromfile) {
receive_fd = open(fromfile, O_RDONLY | O_NOATIME);
if (receive_fd < 0) {
fprintf(stderr, "ERROR: failed to open %s\n", fromfile);
return 1;
}
}
ret = do_receive(&r, tomnt, receive_fd, max_errors);
return !!ret;
}
static int cmd_balance_resume(int argc, char **argv)
{
struct btrfs_ioctl_balance_args args;
const char *path;
DIR *dirstream = NULL;
int fd;
int ret;
clean_args_no_options(argc, argv, cmd_balance_resume_usage);
if (check_argc_exact(argc - optind, 1))
return 1;
path = argv[optind];
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
memset(&args, 0, sizeof(args));
args.flags |= BTRFS_BALANCE_RESUME;
ret = ioctl(fd, BTRFS_IOC_BALANCE_V2, &args);
if (ret < 0) {
if (errno == ECANCELED) {
if (args.state & BTRFS_BALANCE_STATE_PAUSE_REQ)
fprintf(stderr, "balance paused by user\n");
if (args.state & BTRFS_BALANCE_STATE_CANCEL_REQ)
fprintf(stderr, "balance canceled by user\n");
} else if (errno == ENOTCONN || errno == EINPROGRESS) {
error("balance resume on '%s' failed: %s", path,
(errno == ENOTCONN) ? "Not in progress" :
"Already running");
if (errno == ENOTCONN)
ret = 2;
else
ret = 1;
} else {
error("error during balancing '%s': %m\n"
"There may be more info in syslog - try dmesg | tail",
path);
ret = 1;
}
} else {
printf("Done, had to relocate %llu out of %llu chunks\n",
(unsigned long long)args.stat.completed,
(unsigned long long)args.stat.considered);
}
close_file_or_dir(fd, dirstream);
return ret;
}
int cmd_rescue_chunk_recover(int argc, char *argv[])
{
int ret = 0;
char *file;
int yes = 0;
int verbose = 0;
while (1) {
int c = getopt(argc, argv, "yvh");
if (c < 0)
break;
switch (c) {
case 'y':
yes = 1;
break;
case 'v':
verbose = 1;
break;
case 'h':
default:
usage(cmd_rescue_chunk_recover_usage);
}
}
argc = argc - optind;
if (check_argc_exact(argc, 1))
usage(cmd_rescue_chunk_recover_usage);
file = argv[optind];
ret = check_mounted(file);
if (ret < 0) {
fprintf(stderr, "Could not check mount status: %s\n",
strerror(-ret));
return 1;
} else if (ret) {
fprintf(stderr, "the device is busy\n");
return 1;
}
ret = btrfs_recover_chunk_tree(file, verbose, yes);
if (!ret) {
fprintf(stdout, "Recover the chunk tree successfully.\n");
} else if (ret > 0) {
ret = 0;
fprintf(stdout, "Abort to rebuild the on-disk chunk tree.\n");
} else {
fprintf(stdout, "Fail to recover the chunk tree.\n");
}
return ret;
}
static int cmd_rescue_chunk_recover(int argc, char *argv[])
{
int ret = 0;
char *file;
int yes = 0;
int verbose = 0;
optind = 0;
while (1) {
int c = getopt(argc, argv, "yvh");
if (c < 0)
break;
switch (c) {
case 'y':
yes = 1;
break;
case 'v':
verbose = 1;
break;
case 'h':
default:
usage(cmd_rescue_chunk_recover_usage);
}
}
if (check_argc_exact(argc - optind, 1))
usage(cmd_rescue_chunk_recover_usage);
file = argv[optind];
ret = check_mounted(file);
if (ret < 0) {
errno = -ret;
error("could not check mount status: %m");
return 1;
} else if (ret) {
error("the device is busy");
return 1;
}
ret = btrfs_recover_chunk_tree(file, verbose, yes);
if (!ret) {
fprintf(stdout, "Chunk tree recovered successfully\n");
} else if (ret > 0) {
ret = 0;
fprintf(stdout, "Chunk tree recovery aborted\n");
} else {
fprintf(stdout, "Chunk tree recovery failed\n");
}
return ret;
}
static int cmd_replace_cancel(int argc, char **argv)
{
struct btrfs_ioctl_dev_replace_args args = {0};
int ret;
int c;
int fd;
int e;
char *path;
DIR *dirstream = NULL;
while ((c = getopt(argc, argv, "")) != -1) {
switch (c) {
case '?':
default:
usage(cmd_replace_cancel_usage);
}
}
if (check_argc_exact(argc - optind, 1))
usage(cmd_replace_cancel_usage);
path = argv[optind];
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access \"%s\": %s\n",
path, strerror(errno));
return 1;
}
args.cmd = BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL;
args.result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT;
ret = ioctl(fd, BTRFS_IOC_DEV_REPLACE, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret) {
fprintf(stderr, "ERROR: ioctl(DEV_REPLACE_CANCEL) failed on \"%s\": %s",
path, strerror(e));
if (args.result != BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT)
fprintf(stderr, ", %s\n",
replace_dev_result2string(args.result));
else
fprintf(stderr, "\n");
return 1;
}
if (args.result == BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED) {
printf("INFO: ioctl(DEV_REPLACE_CANCEL)\"%s\": %s\n",
path, replace_dev_result2string(args.result));
return 2;
}
return 0;
}
static int cmd_scrub_cancel(int argc, char **argv)
{
char *path;
int ret;
int fdmnt;
int err;
char mp[BTRFS_PATH_NAME_MAX + 1];
struct btrfs_fs_devices *fs_devices_mnt = NULL;
if (check_argc_exact(argc, 2))
usage(cmd_scrub_cancel_usage);
path = argv[1];
fdmnt = open_file_or_dir(path);
if (fdmnt < 0) {
fprintf(stderr, "ERROR: scrub cancel failed\n");
return 12;
}
again:
ret = ioctl(fdmnt, BTRFS_IOC_SCRUB_CANCEL, NULL);
err = errno;
close(fdmnt);
if (ret && err == EINVAL) {
/* path is no mounted btrfs. try if it's a device */
ret = check_mounted_where(fdmnt, path, mp, sizeof(mp),
&fs_devices_mnt);
close(fdmnt);
if (ret) {
fdmnt = open_file_or_dir(mp);
if (fdmnt >= 0) {
path = mp;
goto again;
}
}
}
if (ret) {
fprintf(stderr, "ERROR: scrub cancel failed on %s: %s\n", path,
err == ENOTCONN ? "not running" : strerror(errno));
return 1;
}
printf("scrub cancelled\n");
return 0;
}
static int cmd_rescue_zero_log(int argc, char **argv)
{
struct btrfs_root *root;
struct btrfs_trans_handle *trans;
struct btrfs_super_block *sb;
char *devname;
int ret;
clean_args_no_options(argc, argv, cmd_rescue_zero_log_usage);
if (check_argc_exact(argc, 2))
usage(cmd_rescue_zero_log_usage);
devname = argv[optind];
ret = check_mounted(devname);
if (ret < 0) {
errno = -ret;
error("could not check mount status: %m");
goto out;
} else if (ret) {
error("%s is currently mounted", devname);
ret = -EBUSY;
goto out;
}
root = open_ctree(devname, 0, OPEN_CTREE_WRITES | OPEN_CTREE_PARTIAL);
if (!root) {
error("could not open ctree");
return 1;
}
sb = root->fs_info->super_copy;
printf("Clearing log on %s, previous log_root %llu, level %u\n",
devname,
(unsigned long long)btrfs_super_log_root(sb),
(unsigned)btrfs_super_log_root_level(sb));
trans = btrfs_start_transaction(root, 1);
BUG_ON(IS_ERR(trans));
btrfs_set_super_log_root(sb, 0);
btrfs_set_super_log_root_level(sb, 0);
btrfs_commit_transaction(trans, root);
close_ctree(root);
out:
return !!ret;
}
static int cmd_device_ready(int argc, char **argv)
{
struct btrfs_ioctl_vol_args args;
int fd;
int ret;
char *path;
clean_args_no_options(argc, argv, cmd_device_ready_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_device_ready_usage);
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0) {
perror("failed to open /dev/btrfs-control");
return 1;
}
path = canonicalize_path(argv[optind]);
if (!path) {
error("could not canonicalize pathname '%s': %m",
argv[optind]);
ret = 1;
goto out;
}
if (is_block_device(path) != 1) {
error("not a block device: %s", 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) {
error("unable to determine if device '%s' is ready for mount: %m",
path);
ret = 1;
}
out:
free(path);
close(fd);
return ret;
}
static int cmd_scrub_cancel(int argc, char **argv)
{
char *path;
int ret;
int fdmnt = -1;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 2))
usage(cmd_scrub_cancel_usage);
path = argv[1];
fdmnt = open_path_or_dev_mnt(path, &dirstream);
if (fdmnt < 0) {
if (errno == EINVAL)
fprintf(stderr,
"ERROR: '%s' is not a mounted btrfs device\n",
path);
else
fprintf(stderr, "ERROR: can't access '%s': %s\n",
path, strerror(errno));
ret = 1;
goto out;
}
ret = ioctl(fdmnt, BTRFS_IOC_SCRUB_CANCEL, NULL);
if (ret < 0) {
fprintf(stderr, "ERROR: scrub cancel failed on %s: %s\n", path,
errno == ENOTCONN ? "not running" : strerror(errno));
if (errno == ENOTCONN)
ret = 2;
else
ret = 1;
goto out;
}
ret = 0;
printf("scrub cancelled\n");
out:
close_file_or_dir(fdmnt, dirstream);
return ret;
}
int main(int ac, char **av)
{
struct btrfs_root *root;
struct btrfs_trans_handle *trans;
struct btrfs_super_block *sb;
int ret;
set_argv0(av);
if (check_argc_exact(ac, 2))
print_usage();
radix_tree_init();
printf("WARNING: this utility is deprecated, please use 'btrfs rescue zero-log'\n\n");
if ((ret = check_mounted(av[1])) < 0) {
fprintf(stderr, "ERROR: could not check mount status: %s\n", strerror(-ret));
goto out;
} else if (ret) {
fprintf(stderr, "ERROR: %s is currently mounted\n", av[1]);
ret = -EBUSY;
goto out;
}
root = open_ctree(av[1], 0, OPEN_CTREE_WRITES | OPEN_CTREE_PARTIAL);
if (!root) {
fprintf(stderr, "ERROR: cannot open ctree\n");
return 1;
}
sb = root->fs_info->super_copy;
printf("Clearing log on %s, previous log_root %llu, level %u\n",
av[1],
(unsigned long long)btrfs_super_log_root(sb),
(unsigned)btrfs_super_log_root_level(sb));
trans = btrfs_start_transaction(root, 1);
btrfs_set_super_log_root(root->fs_info->super_copy, 0);
btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
btrfs_commit_transaction(trans, root);
close_ctree(root);
out:
return !!ret;
}
static int cmd_find_new(int argc, char **argv)
{
int fd;
int ret;
char *subvol;
u64 last_gen;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 3))
usage(cmd_find_new_usage);
subvol = argv[1];
last_gen = arg_strtou64(argv[2]);
ret = test_issubvolume(subvol);
if (ret < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", subvol);
return 1;
}
if (!ret) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol);
return 1;
}
fd = open_file_or_dir(subvol, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
return 1;
}
ret = ioctl(fd, BTRFS_IOC_SYNC);
if (ret < 0) {
fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
subvol, strerror(errno));
close_file_or_dir(fd, dirstream);
return 1;
}
ret = btrfs_list_find_updated_files(fd, 0, last_gen);
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_subvol_find_new(int argc, char **argv)
{
int fd;
int ret;
char *subvol;
u64 last_gen;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_subvol_find_new_usage);
if (check_argc_exact(argc - optind, 2))
usage(cmd_subvol_find_new_usage);
subvol = argv[optind];
last_gen = arg_strtou64(argv[optind + 1]);
ret = test_issubvolume(subvol);
if (ret < 0) {
error("cannot access subvolume %s: %s", subvol, strerror(-ret));
return 1;
}
if (!ret) {
error("not a subvolume: %s", subvol);
return 1;
}
fd = btrfs_open_dir(subvol, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_SYNC);
if (ret < 0) {
error("sync ioctl failed on '%s': %s",
subvol, strerror(errno));
close_file_or_dir(fd, dirstream);
return 1;
}
ret = btrfs_list_find_updated_files(fd, 0, last_gen);
close_file_or_dir(fd, dirstream);
return !!ret;
}
static int cmd_cancel_replace(int argc, char **argv)
{
struct btrfs_ioctl_dev_replace_args args = {0};
int ret;
int c;
int fd;
int e;
char *path;
while ((c = getopt(argc, argv, "")) != -1) {
switch (c) {
case '?':
default:
usage(cmd_cancel_replace_usage);
}
}
if (check_argc_exact(argc - optind, 1))
usage(cmd_cancel_replace_usage);
path = argv[optind];
fd = open_file_or_dir(path);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access \"%s\": %s\n",
path, strerror(errno));
return -1;
}
args.cmd = BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL;
ret = ioctl(fd, BTRFS_IOC_DEV_REPLACE, &args);
e = errno;
close(fd);
if (ret) {
fprintf(stderr, "ERROR: ioctl(DEV_REPLACE_CANCEL) failed on \"%s\": %s, %s\n",
path, strerror(e),
replace_dev_result2string(args.result));
return ret;
}
return 0;
}