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_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;
}
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;
}
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 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 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_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 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_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_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_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_balance_cancel(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_cancel_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_CANCEL);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
fprintf(stderr, "ERROR: balance cancel on '%s' failed - %s\n",
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;
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_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_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 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);
}
static int do_balance(const char *path, struct btrfs_ioctl_balance_args *args,
int nofilters)
{
int fd;
int ret;
int e;
DIR *dirstream = NULL;
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_V2, args);
e = errno;
if (ret < 0) {
/*
* older kernels don't have the new balance ioctl, try the
* old one. But, the old one doesn't know any filters, so
* don't fall back if they tried to use the fancy new things
*/
if (e == ENOTTY && nofilters) {
ret = do_balance_v1(fd);
if (ret == 0)
goto out;
e = errno;
}
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");
ret = 0;
} else {
fprintf(stderr, "ERROR: error during balancing '%s' "
"- %s\n", path, strerror(e));
if (e != EINPROGRESS)
fprintf(stderr, "There may be more info in "
"syslog - try dmesg | tail\n");
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);
ret = 0;
}
out:
close_file_or_dir(fd, dirstream);
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_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;
}
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_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_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;
}
static int qgroup_assign(int assign, int argc, char **argv)
{
int ret = 0;
int fd;
int e;
char *path = argv[3];
struct btrfs_ioctl_qgroup_assign_args args;
DIR *dirstream = NULL;
if (check_argc_exact(argc, 4))
return -1;
memset(&args, 0, sizeof(args));
args.assign = assign;
args.src = parse_qgroupid(argv[1]);
args.dst = parse_qgroupid(argv[2]);
/*
* FIXME src should accept subvol path
*/
if (btrfs_qgroup_level(args.src) >= btrfs_qgroup_level(args.dst)) {
fprintf(stderr, "ERROR: bad relation requested '%s'\n", path);
return 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_ASSIGN, &args);
e = errno;
close_file_or_dir(fd, dirstream);
if (ret < 0) {
fprintf(stderr, "ERROR: unable to assign quota group: %s\n",
strerror(e));
return 1;
}
return 0;
}
static int cmd_scrub_cancel(int argc, char **argv)
{
char *path;
int ret;
int fdmnt = -1;
DIR *dirstream = NULL;
clean_args_no_options(argc, argv, cmd_scrub_cancel_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_scrub_cancel_usage);
path = argv[optind];
fdmnt = open_path_or_dev_mnt(path, &dirstream, 1);
if (fdmnt < 0) {
ret = 1;
goto out;
}
ret = ioctl(fdmnt, BTRFS_IOC_SCRUB_CANCEL, NULL);
if (ret < 0) {
error("scrub cancel failed on %s: %s", 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;
}
static int cmd_subvol_show(int argc, char **argv)
{
struct root_info get_ri;
struct btrfs_list_filter_set *filter_set;
char tstr[256];
char uuidparse[BTRFS_UUID_UNPARSED_SIZE];
char *fullpath = NULL, *svpath = NULL, *mnt = NULL;
char raw_prefix[] = "\t\t\t\t";
u64 sv_id, mntid;
int fd = -1, mntfd = -1;
int ret = 1;
DIR *dirstream1 = NULL, *dirstream2 = NULL;
if (check_argc_exact(argc, 2))
usage(cmd_subvol_show_usage);
fullpath = realpath(argv[1], NULL);
if (!fullpath) {
fprintf(stderr, "ERROR: finding real path for '%s', %s\n",
argv[1], strerror(errno));
goto out;
}
ret = test_issubvolume(fullpath);
if (ret < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", fullpath);
goto out;
}
if (!ret) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", fullpath);
ret = 1;
goto out;
}
ret = find_mount_root(fullpath, &mnt);
if (ret < 0) {
fprintf(stderr, "ERROR: find_mount_root failed on '%s': "
"%s\n", fullpath, strerror(-ret));
goto out;
}
if (ret > 0) {
fprintf(stderr,
"ERROR: %s doesn't belong to btrfs mount point\n",
fullpath);
goto out;
}
ret = 1;
svpath = get_subvol_name(mnt, fullpath);
fd = open_file_or_dir(fullpath, &dirstream1);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", fullpath);
goto out;
}
ret = btrfs_list_get_path_rootid(fd, &sv_id);
if (ret) {
fprintf(stderr, "ERROR: can't get rootid for '%s'\n",
fullpath);
goto out;
}
mntfd = open_file_or_dir(mnt, &dirstream2);
if (mntfd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", mnt);
goto out;
}
ret = btrfs_list_get_path_rootid(mntfd, &mntid);
if (ret) {
fprintf(stderr, "ERROR: can't get rootid for '%s'\n", mnt);
goto out;
}
if (sv_id == BTRFS_FS_TREE_OBJECTID) {
printf("%s is btrfs root\n", fullpath);
goto out;
}
memset(&get_ri, 0, sizeof(get_ri));
get_ri.root_id = sv_id;
ret = btrfs_get_subvol(mntfd, &get_ri);
if (ret) {
fprintf(stderr, "ERROR: can't find '%s'\n",
svpath);
goto out;
}
/* print the info */
printf("%s\n", fullpath);
printf("\tName: \t\t\t%s\n", get_ri.name);
if (uuid_is_null(get_ri.uuid))
strcpy(uuidparse, "-");
else
uuid_unparse(get_ri.uuid, uuidparse);
printf("\tUUID: \t\t\t%s\n", uuidparse);
if (uuid_is_null(get_ri.puuid))
strcpy(uuidparse, "-");
else
uuid_unparse(get_ri.puuid, uuidparse);
printf("\tParent UUID: \t\t%s\n", uuidparse);
if (uuid_is_null(get_ri.ruuid))
strcpy(uuidparse, "-");
else
uuid_unparse(get_ri.ruuid, uuidparse);
printf("\tReceived UUID: \t\t%s\n", uuidparse);
if (get_ri.otime) {
struct tm tm;
localtime_r(&get_ri.otime, &tm);
strftime(tstr, 256, "%Y-%m-%d %X %z", &tm);
} else
strcpy(tstr, "-");
printf("\tCreation time: \t\t%s\n", tstr);
printf("\tSubvolume ID: \t\t%llu\n", get_ri.root_id);
printf("\tGeneration: \t\t%llu\n", get_ri.gen);
printf("\tGen at creation: \t%llu\n", get_ri.ogen);
printf("\tParent ID: \t\t%llu\n", get_ri.ref_tree);
printf("\tTop level ID: \t\t%llu\n", get_ri.top_id);
if (get_ri.flags & BTRFS_ROOT_SUBVOL_RDONLY)
printf("\tFlags: \t\t\treadonly\n");
else
printf("\tFlags: \t\t\t-\n");
/* print the snapshots of the given subvol if any*/
printf("\tSnapshot(s):\n");
filter_set = btrfs_list_alloc_filter_set();
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_BY_PARENT,
(u64)(unsigned long)get_ri.uuid);
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
btrfs_list_subvols_print(fd, filter_set, NULL, BTRFS_LIST_LAYOUT_RAW,
1, raw_prefix);
/* clean up */
free(get_ri.path);
free(get_ri.name);
free(get_ri.full_path);
btrfs_list_free_filter_set(filter_set);
out:
close_file_or_dir(fd, dirstream1);
close_file_or_dir(mntfd, dirstream2);
free(mnt);
free(fullpath);
return !!ret;
}
static int cmd_snapshot(int argc, char **argv)
{
char *subvol, *dst;
int res, retval;
int fd = -1, fddst = -1;
int len, readonly = 0;
char *dupname = NULL;
char *dupdir = NULL;
char *newname;
char *dstdir;
struct btrfs_ioctl_vol_args_v2 args;
struct btrfs_qgroup_inherit *inherit = NULL;
DIR *dirstream1 = NULL, *dirstream2 = NULL;
optind = 1;
memset(&args, 0, sizeof(args));
while (1) {
int c = getopt(argc, argv, "c:i:r");
if (c < 0)
break;
switch (c) {
case 'c':
res = qgroup_inherit_add_copy(&inherit, optarg, 0);
if (res) {
retval = res;
goto out;
}
break;
case 'i':
res = qgroup_inherit_add_group(&inherit, optarg);
if (res) {
retval = res;
goto out;
}
break;
case 'r':
readonly = 1;
break;
case 'x':
res = qgroup_inherit_add_copy(&inherit, optarg, 1);
if (res) {
retval = res;
goto out;
}
break;
default:
usage(cmd_snapshot_usage);
}
}
if (check_argc_exact(argc - optind, 2))
usage(cmd_snapshot_usage);
subvol = argv[optind];
dst = argv[optind + 1];
retval = 1; /* failure */
res = test_issubvolume(subvol);
if (res < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", subvol);
goto out;
}
if (!res) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol);
goto out;
}
res = test_isdir(dst);
if (res == 0) {
fprintf(stderr, "ERROR: '%s' exists and it is not a directory\n", dst);
goto out;
}
if (res > 0) {
dupname = strdup(subvol);
newname = basename(dupname);
dstdir = dst;
} else {
dupname = strdup(dst);
newname = basename(dupname);
dupdir = strdup(dst);
dstdir = dirname(dupdir);
}
if (!test_issubvolname(newname)) {
fprintf(stderr, "ERROR: incorrect snapshot name '%s'\n",
newname);
goto out;
}
len = strlen(newname);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "ERROR: snapshot name too long '%s'\n",
newname);
goto out;
}
fddst = open_file_or_dir(dstdir, &dirstream1);
if (fddst < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", dstdir);
goto out;
}
fd = open_file_or_dir(subvol, &dirstream2);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", dstdir);
goto out;
}
if (readonly) {
args.flags |= BTRFS_SUBVOL_RDONLY;
printf("Create a readonly snapshot of '%s' in '%s/%s'\n",
subvol, dstdir, newname);
} else {
printf("Create a snapshot of '%s' in '%s/%s'\n",
subvol, dstdir, newname);
}
args.fd = fd;
if (inherit) {
args.flags |= BTRFS_SUBVOL_QGROUP_INHERIT;
args.size = qgroup_inherit_size(inherit);
args.qgroup_inherit = inherit;
}
strncpy_null(args.name, newname);
res = ioctl(fddst, BTRFS_IOC_SNAP_CREATE_V2, &args);
if (res < 0) {
fprintf( stderr, "ERROR: cannot snapshot '%s' - %s\n",
subvol, strerror(errno));
goto out;
}
retval = 0; /* success */
out:
close_file_or_dir(fddst, dirstream1);
close_file_or_dir(fd, dirstream2);
free(inherit);
free(dupname);
free(dupdir);
return retval;
}
static int cmd_subvol_list(int argc, char **argv)
{
struct btrfs_list_filter_set *filter_set;
struct btrfs_list_comparer_set *comparer_set;
u64 flags = 0;
int fd = -1;
u64 top_id;
int ret = -1, uerr = 0;
char *subvol;
int is_tab_result = 0;
int is_list_all = 0;
int is_only_in_path = 0;
DIR *dirstream = NULL;
filter_set = btrfs_list_alloc_filter_set();
comparer_set = btrfs_list_alloc_comparer_set();
optind = 1;
while(1) {
int c;
static const struct option long_options[] = {
{"sort", required_argument, NULL, 'S'},
{NULL, 0, NULL, 0}
};
c = getopt_long(argc, argv,
"acdgopqsurRG:C:t", long_options, NULL);
if (c < 0)
break;
switch(c) {
case 'p':
btrfs_list_setup_print_column(BTRFS_LIST_PARENT);
break;
case 'a':
is_list_all = 1;
break;
case 'c':
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
break;
case 'd':
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_DELETED,
0);
break;
case 'g':
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
break;
case 'o':
is_only_in_path = 1;
break;
case 't':
is_tab_result = 1;
break;
case 's':
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_SNAPSHOT_ONLY,
0);
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
btrfs_list_setup_print_column(BTRFS_LIST_OTIME);
break;
case 'u':
btrfs_list_setup_print_column(BTRFS_LIST_UUID);
break;
case 'q':
btrfs_list_setup_print_column(BTRFS_LIST_PUUID);
break;
case 'R':
btrfs_list_setup_print_column(BTRFS_LIST_RUUID);
break;
case 'r':
flags |= BTRFS_ROOT_SUBVOL_RDONLY;
break;
case 'G':
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
ret = btrfs_list_parse_filter_string(optarg,
&filter_set,
BTRFS_LIST_FILTER_GEN);
if (ret) {
uerr = 1;
goto out;
}
break;
case 'C':
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
ret = btrfs_list_parse_filter_string(optarg,
&filter_set,
BTRFS_LIST_FILTER_CGEN);
if (ret) {
uerr = 1;
goto out;
}
break;
case 'S':
ret = btrfs_list_parse_sort_string(optarg,
&comparer_set);
if (ret) {
uerr = 1;
goto out;
}
break;
default:
uerr = 1;
goto out;
}
}
if (flags)
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_FLAGS,
flags);
if (check_argc_exact(argc - optind, 1)) {
uerr = 1;
goto out;
}
subvol = argv[optind];
fd = open_file_or_dir(subvol, &dirstream);
if (fd < 0) {
ret = -1;
fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
goto out;
}
ret = btrfs_list_get_path_rootid(fd, &top_id);
if (ret) {
fprintf(stderr, "ERROR: can't get rootid for '%s'\n", subvol);
goto out;
}
if (is_list_all)
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_FULL_PATH,
top_id);
else if (is_only_in_path)
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_TOPID_EQUAL,
top_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);
if (is_tab_result)
ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
BTRFS_LIST_LAYOUT_TABLE,
!is_list_all && !is_only_in_path, NULL);
else
ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
BTRFS_LIST_LAYOUT_DEFAULT,
!is_list_all && !is_only_in_path, NULL);
out:
close_file_or_dir(fd, dirstream);
if (filter_set)
btrfs_list_free_filter_set(filter_set);
if (comparer_set)
btrfs_list_free_comparer_set(comparer_set);
if (uerr)
usage(cmd_subvol_list_usage);
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_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;
}