static int wait_for_subvolume_cleaning(int fd, int count, u64 *ids,
int sleep_interval)
{
int ret = 0;
int remaining;
int i;
remaining = count;
while (1) {
for (i = 0; i < 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:
return ret;
}
static int wait_for_subvolume_cleaning(int fd, int count, u64 *ids,
int sleep_interval)
{
int ret;
int i;
while (1) {
int clean = 1;
for (i = 0; i < count; i++) {
if (!ids[i])
continue;
ret = is_subvolume_cleaned(fd, ids[i]);
if (ret < 0) {
error(
"cannot read status of dead subvolume %llu: %s",
(unsigned long long)ids[i], strerror(-ret));
return ret;
}
if (ret) {
printf("Subvolume id %llu is gone\n", ids[i]);
ids[i] = 0;
} else {
clean = 0;
}
}
if (clean)
break;
sleep(sleep_interval);
}
return 0;
}
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;
}
