2 * Copyright (C) 2012 STRATO. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #include <sys/ioctl.h>
30 static const char * const qgroup_cmd_group_usage[] = {
31 "btrfs qgroup <command> [options] <path>",
35 static int _cmd_qgroup_assign(int assign, int argc, char **argv)
41 struct btrfs_ioctl_qgroup_assign_args args;
42 DIR *dirstream = NULL;
45 enum { GETOPT_VAL_RESCAN = 256 };
46 static const struct option long_options[] = {
47 { "rescan", no_argument, NULL, GETOPT_VAL_RESCAN },
50 int c = getopt_long(argc, argv, "", long_options, NULL);
55 case GETOPT_VAL_RESCAN:
59 /* Usage printed by the caller */
64 if (check_argc_exact(argc - optind, 3))
67 memset(&args, 0, sizeof(args));
69 args.src = parse_qgroupid(argv[optind]);
70 args.dst = parse_qgroupid(argv[optind + 1]);
72 path = argv[optind + 2];
75 * FIXME src should accept subvol path
77 if (btrfs_qgroup_level(args.src) >= btrfs_qgroup_level(args.dst)) {
78 error("bad relation requested: %s", path);
81 fd = btrfs_open_dir(path, &dirstream, 1);
85 ret = ioctl(fd, BTRFS_IOC_QGROUP_ASSIGN, &args);
87 error("unable to assign quota group: %s", strerror(errno));
88 close_file_or_dir(fd, dirstream);
93 * If ret > 0, it means assign caused qgroup data inconsistent state.
94 * Schedule a quota rescan if requested.
96 * The return value change only happens in newer kernel. But will not
97 * cause problem since old kernel has a bug that will never clear
102 struct btrfs_ioctl_quota_rescan_args qargs;
104 printf("Quota data changed, rescan scheduled\n");
105 memset(&qargs, 0, sizeof(qargs));
106 ret = ioctl(fd, BTRFS_IOC_QUOTA_RESCAN, &qargs);
108 error("quota rescan failed: %s",
111 warning("quotas may be inconsistent, rescan needed");
114 close_file_or_dir(fd, dirstream);
118 static int _cmd_qgroup_create(int create, int argc, char **argv)
124 struct btrfs_ioctl_qgroup_create_args args;
125 DIR *dirstream = NULL;
127 if (check_argc_exact(argc - optind, 2))
130 memset(&args, 0, sizeof(args));
131 args.create = create;
132 args.qgroupid = parse_qgroupid(argv[optind]);
133 path = argv[optind + 1];
135 fd = btrfs_open_dir(path, &dirstream, 1);
139 ret = ioctl(fd, BTRFS_IOC_QGROUP_CREATE, &args);
141 close_file_or_dir(fd, dirstream);
143 error("unable to %s quota group: %s",
144 create ? "create":"destroy", strerror(e));
150 static int parse_limit(const char *p, unsigned long long *s)
153 unsigned long long size;
154 unsigned long long CLEAR_VALUE = -1;
156 if (strcasecmp(p, "none") == 0) {
164 size = strtoull(p, &endptr, 10);
200 static const char * const cmd_qgroup_assign_usage[] = {
201 "btrfs qgroup assign [options] <src> <dst> <path>",
202 "Assign SRC as the child qgroup of DST",
204 "--rescan schedule qutoa rescan if needed",
209 static int cmd_qgroup_assign(int argc, char **argv)
213 clean_args_no_options(argc, argv, cmd_qgroup_assign_usage);
215 ret = _cmd_qgroup_assign(1, argc, argv);
218 usage(cmd_qgroup_assign_usage);
222 static const char * const cmd_qgroup_remove_usage[] = {
223 "btrfs qgroup remove <src> <dst> <path>",
224 "Remove a child qgroup SRC from DST.",
228 static int cmd_qgroup_remove(int argc, char **argv)
232 clean_args_no_options(argc, argv, cmd_qgroup_remove_usage);
234 ret = _cmd_qgroup_assign(0, argc, argv);
237 usage(cmd_qgroup_remove_usage);
241 static const char * const cmd_qgroup_create_usage[] = {
242 "btrfs qgroup create <qgroupid> <path>",
243 "Create a subvolume quota group.",
247 static int cmd_qgroup_create(int argc, char **argv)
251 clean_args_no_options(argc, argv, cmd_qgroup_create_usage);
253 ret = _cmd_qgroup_create(1, argc, argv);
256 usage(cmd_qgroup_create_usage);
260 static const char * const cmd_qgroup_destroy_usage[] = {
261 "btrfs qgroup destroy <qgroupid> <path>",
262 "Destroy a quota group.",
266 static int cmd_qgroup_destroy(int argc, char **argv)
270 clean_args_no_options(argc, argv, cmd_qgroup_destroy_usage);
272 ret = _cmd_qgroup_create(0, argc, argv);
275 usage(cmd_qgroup_destroy_usage);
279 static const char * const cmd_qgroup_show_usage[] = {
280 "btrfs qgroup show -pcreFf "
281 "[--sort=qgroupid,rfer,excl,max_rfer,max_excl] <path>",
282 "Show subvolume quota groups.",
283 "-p print parent qgroup id",
284 "-c print child qgroup id",
285 "-r print limit of referenced size of qgroup",
286 "-e print limit of exclusive size of qgroup",
287 "-F list all qgroups which impact the given path",
288 " (including ancestral qgroups)",
289 "-f list all qgroups which impact the given path",
290 " (excluding ancestral qgroups)",
292 "--sort=qgroupid,rfer,excl,max_rfer,max_excl",
293 " list qgroups sorted by specified items",
294 " you can use '+' or '-' in front of each item.",
295 " (+:ascending, -:descending, ascending default)",
299 static int cmd_qgroup_show(int argc, char **argv)
305 DIR *dirstream = NULL;
310 struct btrfs_qgroup_comparer_set *comparer_set;
311 struct btrfs_qgroup_filter_set *filter_set;
312 filter_set = btrfs_qgroup_alloc_filter_set();
313 comparer_set = btrfs_qgroup_alloc_comparer_set();
315 unit_mode = get_unit_mode_from_arg(&argc, argv, 0);
320 static const struct option long_options[] = {
321 {"sort", required_argument, NULL, 'S'},
325 c = getopt_long(argc, argv, "pcreFf", long_options, NULL);
330 btrfs_qgroup_setup_print_column(
331 BTRFS_QGROUP_PARENT);
334 btrfs_qgroup_setup_print_column(
338 btrfs_qgroup_setup_print_column(
339 BTRFS_QGROUP_MAX_RFER);
342 btrfs_qgroup_setup_print_column(
343 BTRFS_QGROUP_MAX_EXCL);
352 ret = btrfs_qgroup_parse_sort_string(optarg,
355 usage(cmd_qgroup_show_usage);
358 usage(cmd_qgroup_show_usage);
361 btrfs_qgroup_setup_units(unit_mode);
363 if (check_argc_exact(argc - optind, 1))
364 usage(cmd_qgroup_show_usage);
367 fd = btrfs_open_dir(path, &dirstream, 1);
369 btrfs_qgroup_free_filter_set(filter_set);
370 btrfs_qgroup_free_comparer_set(comparer_set);
375 qgroupid = btrfs_get_path_rootid(fd);
376 if (filter_flag & 0x1)
377 btrfs_qgroup_setup_filter(&filter_set,
378 BTRFS_QGROUP_FILTER_ALL_PARENT,
380 if (filter_flag & 0x2)
381 btrfs_qgroup_setup_filter(&filter_set,
382 BTRFS_QGROUP_FILTER_PARENT,
385 ret = btrfs_show_qgroups(fd, filter_set, comparer_set);
387 close_file_or_dir(fd, dirstream);
389 error("can't list qgroups: %s", strerror(e));
394 static const char * const cmd_qgroup_limit_usage[] = {
395 "btrfs qgroup limit [options] <size>|none [<qgroupid>] <path>",
396 "Set the limits a subvolume quota group.",
398 "-c limit amount of data after compression. This is the default,",
399 " it is currently not possible to turn off this option.",
400 "-e limit space exclusively assigned to this qgroup",
404 static int cmd_qgroup_limit(int argc, char **argv)
410 struct btrfs_ioctl_qgroup_limit_args args;
411 unsigned long long size;
414 DIR *dirstream = NULL;
418 int c = getopt(argc, argv, "ce");
429 usage(cmd_qgroup_limit_usage);
433 if (check_argc_min(argc - optind, 2))
434 usage(cmd_qgroup_limit_usage);
436 if (!parse_limit(argv[optind], &size)) {
437 error("invalid size argument: %s", argv[optind]);
441 memset(&args, 0, sizeof(args));
443 args.lim.flags |= BTRFS_QGROUP_LIMIT_RFER_CMPR |
444 BTRFS_QGROUP_LIMIT_EXCL_CMPR;
446 args.lim.flags |= BTRFS_QGROUP_LIMIT_MAX_EXCL;
447 args.lim.max_exclusive = size;
449 args.lim.flags |= BTRFS_QGROUP_LIMIT_MAX_RFER;
450 args.lim.max_referenced = size;
453 if (argc - optind == 2) {
455 path = argv[optind + 1];
456 ret = test_issubvolume(path);
458 error("cannot access '%s': %s", path, strerror(-ret));
462 error("'%s' is not a subvolume", path);
466 * keep qgroupid at 0, this indicates that the subvolume the
467 * fd refers to is to be limited
469 } else if (argc - optind == 3) {
470 args.qgroupid = parse_qgroupid(argv[optind + 1]);
471 path = argv[optind + 2];
473 usage(cmd_qgroup_limit_usage);
475 fd = btrfs_open_dir(path, &dirstream, 1);
479 ret = ioctl(fd, BTRFS_IOC_QGROUP_LIMIT, &args);
481 close_file_or_dir(fd, dirstream);
483 error("unable to limit requested quota group: %s", strerror(e));
489 static const char qgroup_cmd_group_info[] =
490 "manage quota groups";
492 const struct cmd_group qgroup_cmd_group = {
493 qgroup_cmd_group_usage, qgroup_cmd_group_info, {
494 { "assign", cmd_qgroup_assign, cmd_qgroup_assign_usage,
496 { "remove", cmd_qgroup_remove, cmd_qgroup_remove_usage,
498 { "create", cmd_qgroup_create, cmd_qgroup_create_usage,
500 { "destroy", cmd_qgroup_destroy, cmd_qgroup_destroy_usage,
502 { "show", cmd_qgroup_show, cmd_qgroup_show_usage,
504 { "limit", cmd_qgroup_limit, cmd_qgroup_limit_usage,
510 int cmd_qgroup(int argc, char **argv)
512 return handle_command_group(&qgroup_cmd_group, argc, argv);