void btrfs_print_key(struct btrfs_disk_key *disk_key)
{
u64 objectid = btrfs_disk_key_objectid(disk_key);
u8 type = btrfs_disk_key_type(disk_key);
u64 offset = btrfs_disk_key_offset(disk_key);
printf("key (");
print_objectid(objectid, type);
printf(" ");
print_key_type(objectid, type);
switch (type) {
case BTRFS_QGROUP_RELATION_KEY:
case BTRFS_QGROUP_INFO_KEY:
case BTRFS_QGROUP_LIMIT_KEY:
printf(" %llu/%llu)", btrfs_qgroup_level(offset),
btrfs_qgroup_subvid(offset));
break;
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
printf(" 0x%016llx)", (unsigned long long)offset);
break;
default:
if (offset == (u64)-1)
printf(" -1)");
else
printf(" %llu)", (unsigned long long)offset);
break;
}
}
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_qgroup_assign(int assign, int argc, char **argv,
const char * const *usage_str)
{
int ret = 0;
int fd;
int rescan = 0;
char *path;
struct btrfs_ioctl_qgroup_assign_args args;
DIR *dirstream = NULL;
if (assign) {
while (1) {
enum { GETOPT_VAL_RESCAN = 256, GETOPT_VAL_NO_RESCAN };
static const struct option long_options[] = {
{ "rescan", no_argument, NULL,
GETOPT_VAL_RESCAN },
{ "no-rescan", no_argument, NULL,
GETOPT_VAL_NO_RESCAN },
{ NULL, 0, NULL, 0 }
};
int c = getopt_long(argc, argv, "", long_options, NULL);
if (c < 0)
break;
switch (c) {
case GETOPT_VAL_RESCAN:
rescan = 1;
break;
case GETOPT_VAL_NO_RESCAN:
rescan = 0;
break;
default:
/* Usage printed by the caller */
return -1;
}
}
} else {
clean_args_no_options(argc, argv, usage_str);
}
if (check_argc_exact(argc - optind, 3))
usage(usage_str);
memset(&args, 0, sizeof(args));
args.assign = assign;
args.src = parse_qgroupid(argv[optind]);
args.dst = parse_qgroupid(argv[optind + 1]);
path = argv[optind + 2];
/*
* FIXME src should accept subvol path
*/
if (btrfs_qgroup_level(args.src) >= btrfs_qgroup_level(args.dst)) {
error("bad relation requested: %s", path);
return 1;
}
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = ioctl(fd, BTRFS_IOC_QGROUP_ASSIGN, &args);
if (ret < 0) {
error("unable to assign quota group: %s", strerror(errno));
close_file_or_dir(fd, dirstream);
return 1;
}
/*
* If ret > 0, it means assign caused qgroup data inconsistent state.
* Schedule a quota rescan if requested.
*
* The return value change only happens in newer kernel. But will not
* cause problem since old kernel has a bug that will never clear
* INCONSISTENT bit.
*/
if (ret > 0) {
if (rescan) {
struct btrfs_ioctl_quota_rescan_args qargs;
printf("Quota data changed, rescan scheduled\n");
memset(&qargs, 0, sizeof(qargs));
ret = ioctl(fd, BTRFS_IOC_QUOTA_RESCAN, &qargs);
if (ret < 0)
error("quota rescan failed: %s",
strerror(errno));
} else {
warning("quotas may be inconsistent, rescan needed");
}
}
close_file_or_dir(fd, dirstream);
return ret;
}
static void print_objectid(u64 objectid, u8 type)
{
switch (type) {
case BTRFS_DEV_EXTENT_KEY:
printf("%llu", (unsigned long long)objectid); /* device id */
return;
case BTRFS_QGROUP_RELATION_KEY:
printf("%llu/%llu", btrfs_qgroup_level(objectid),
btrfs_qgroup_subvid(objectid));
return;
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
printf("0x%016llx", (unsigned long long)objectid);
return;
}
switch (objectid) {
case BTRFS_ROOT_TREE_OBJECTID:
if (type == BTRFS_DEV_ITEM_KEY)
printf("DEV_ITEMS");
else
printf("ROOT_TREE");
break;
case BTRFS_EXTENT_TREE_OBJECTID:
printf("EXTENT_TREE");
break;
case BTRFS_CHUNK_TREE_OBJECTID:
printf("CHUNK_TREE");
break;
case BTRFS_DEV_TREE_OBJECTID:
printf("DEV_TREE");
break;
case BTRFS_FS_TREE_OBJECTID:
printf("FS_TREE");
break;
case BTRFS_ROOT_TREE_DIR_OBJECTID:
printf("ROOT_TREE_DIR");
break;
case BTRFS_CSUM_TREE_OBJECTID:
printf("CSUM_TREE");
break;
case BTRFS_BALANCE_OBJECTID:
printf("BALANCE");
break;
case BTRFS_ORPHAN_OBJECTID:
printf("ORPHAN");
break;
case BTRFS_TREE_LOG_OBJECTID:
printf("TREE_LOG");
break;
case BTRFS_TREE_LOG_FIXUP_OBJECTID:
printf("LOG_FIXUP");
break;
case BTRFS_TREE_RELOC_OBJECTID:
printf("TREE_RELOC");
break;
case BTRFS_DATA_RELOC_TREE_OBJECTID:
printf("DATA_RELOC_TREE");
break;
case BTRFS_EXTENT_CSUM_OBJECTID:
printf("EXTENT_CSUM");
break;
case BTRFS_FREE_SPACE_OBJECTID:
printf("FREE_SPACE");
break;
case BTRFS_FREE_INO_OBJECTID:
printf("FREE_INO");
break;
case BTRFS_QUOTA_TREE_OBJECTID:
printf("QUOTA_TREE");
break;
case BTRFS_UUID_TREE_OBJECTID:
printf("UUID_TREE");
break;
case BTRFS_MULTIPLE_OBJECTIDS:
printf("MULTIPLE");
break;
case (u64)-1:
printf("-1");
break;
case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
if (type == BTRFS_CHUNK_ITEM_KEY) {
printf("FIRST_CHUNK_TREE");
break;
}
/* fall-thru */
default:
printf("%llu", (unsigned long long)objectid);
}
}
