1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
4  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
41 	return a->show ? a->show(sdp, buf) : 0;  in gfs2_attr_show()
49 	return a->store ? a->store(sdp, buf, len) : len;  in gfs2_attr_store()
63 			MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));  in id_show()
68 	return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);  in fsname_show()
73 	struct super_block *s = sdp->sd_vfs;  in uuid_show()
76 	if (uuid_is_null(&s->s_uuid))  in uuid_show()
78 	return snprintf(buf, PAGE_SIZE, "%pUB\n", &s->s_uuid);  in uuid_show()
83 	struct super_block *sb = sdp->sd_vfs;  in freeze_show()
84 	int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1;  in freeze_show()
97 	if (!capable(CAP_SYS_ADMIN))  in freeze_store()
98 		return -EPERM;  in freeze_store()
102 		error = thaw_super(sdp->sd_vfs);  in freeze_store()
105 		error = freeze_super(sdp->sd_vfs);  in freeze_store()
108 		return -EINVAL;  in freeze_store()
129 	if (!capable(CAP_SYS_ADMIN))  in withdraw_store()
130 		return -EPERM;  in withdraw_store()
137 		return -EINVAL;  in withdraw_store()
150 	if (!capable(CAP_SYS_ADMIN))  in statfs_sync_store()
151 		return -EPERM;  in statfs_sync_store()
158 		return -EINVAL;  in statfs_sync_store()
160 	gfs2_statfs_sync(sdp->sd_vfs, 0);  in statfs_sync_store()
169 	if (!capable(CAP_SYS_ADMIN))  in quota_sync_store()
170 		return -EPERM;  in quota_sync_store()
177 		return -EINVAL;  in quota_sync_store()
179 	gfs2_quota_sync(sdp->sd_vfs, 0);  in quota_sync_store()
190 	if (!capable(CAP_SYS_ADMIN))  in quota_refresh_user_store()
191 		return -EPERM;  in quota_refresh_user_store()
199 		return -EINVAL;  in quota_refresh_user_store()
212 	if (!capable(CAP_SYS_ADMIN))  in quota_refresh_group_store()
213 		return -EPERM;  in quota_refresh_group_store()
221 		return -EINVAL;  in quota_refresh_group_store()
234 	char mode[16];  in demote_rq_store()  local
237 	if (!capable(CAP_SYS_ADMIN))  in demote_rq_store()
238 		return -EPERM;  in demote_rq_store()
241 		    mode);  in demote_rq_store()
243 		return -EINVAL;  in demote_rq_store()
245 	if (strcmp(mode, "EX") == 0)  in demote_rq_store()
247 	else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0))  in demote_rq_store()
249 	else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0))  in demote_rq_store()
252 		return -EINVAL;  in demote_rq_store()
255 		return -EINVAL;  in demote_rq_store()
261 		return -EINVAL;  in demote_rq_store()
262 	if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))  in demote_rq_store()
273 #define GFS2_ATTR(name, mode, show, store) \  argument
274 static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
306 	complete(&sdp->sd_kobj_unregister);  in gfs2_sbd_release()
322 	const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops;  in proto_name_show()
323 	return sprintf(buf, "%s\n", ops->lm_proto_name);  in proto_name_show()
328 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;  in block_show()
332 	if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags))  in block_show()
340 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;  in block_store()
348 		set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);  in block_store()
350 		clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);  in block_store()
354 		return -EINVAL;  in block_store()
361 	int val = completion_done(&sdp->sd_wdack) ? 1 : 0;  in wdack_show()
375 	    !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))  in wdack_store()
376 		complete(&sdp->sd_wdack);  in wdack_store()
378 		return -EINVAL;  in wdack_store()
384 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;  in lkfirst_show()
385 	return sprintf(buf, "%d\n", ls->ls_first);  in lkfirst_show()
395 		return -EINVAL;  in lkfirst_store()
396 	rv = wait_for_completion_killable(&sdp->sd_locking_init);  in lkfirst_store()
399 	spin_lock(&sdp->sd_jindex_spin);  in lkfirst_store()
400 	rv = -EBUSY;  in lkfirst_store()
401 	if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)  in lkfirst_store()
403 	rv = -EINVAL;  in lkfirst_store()
404 	if (sdp->sd_args.ar_spectator)  in lkfirst_store()
406 	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)  in lkfirst_store()
408 	sdp->sd_lockstruct.ls_first = first;  in lkfirst_store()
411         spin_unlock(&sdp->sd_jindex_spin);  in lkfirst_store()
417 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;  in first_done_show()
418 	return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags));  in first_done_show()
427 	wait_for_completion(&sdp->sd_journal_ready);  in gfs2_recover_set()
429 	spin_lock(&sdp->sd_jindex_spin);  in gfs2_recover_set()
430 	rv = -EBUSY;  in gfs2_recover_set()
438 	if (!sdp->sd_jdesc)  in gfs2_recover_set()
440 	if (sdp->sd_jdesc->jd_jid == jid && !sdp->sd_args.ar_spectator)  in gfs2_recover_set()
442 	rv = -ENOENT;  in gfs2_recover_set()
443 	list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {  in gfs2_recover_set()
444 		if (jd->jd_jid != jid && !sdp->sd_args.ar_spectator)  in gfs2_recover_set()
450 	spin_unlock(&sdp->sd_jindex_spin);  in gfs2_recover_set()
461 		return -EINVAL;  in recover_store()
463 	if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) {  in recover_store()
464 		rv = -ESHUTDOWN;  in recover_store()
475 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;  in recover_done_show()
476 	return sprintf(buf, "%d\n", ls->ls_recover_jid_done);  in recover_done_show()
481 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;  in recover_status_show()
482 	return sprintf(buf, "%d\n", ls->ls_recover_jid_status);  in recover_status_show()
487 	return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid);  in jid_show()
497 		return -EINVAL;  in jid_store()
498 	rv = wait_for_completion_killable(&sdp->sd_locking_init);  in jid_store()
501 	spin_lock(&sdp->sd_jindex_spin);  in jid_store()
502 	rv = -EINVAL;  in jid_store()
503 	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)  in jid_store()
505 	rv = -EBUSY;  in jid_store()
506 	if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)  in jid_store()
509 	if (sdp->sd_args.ar_spectator && jid > 0)  in jid_store()
510 		rv = jid = -EINVAL;  in jid_store()
511 	sdp->sd_lockstruct.ls_jid = jid;  in jid_store()
512 	clear_bit(SDF_NOJOURNALID, &sdp->sd_flags);  in jid_store()
514 	wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);  in jid_store()
516 	spin_unlock(&sdp->sd_jindex_spin);  in jid_store()
553 			sdp->sd_tune.gt_quota_scale_num,  in quota_scale_show()
554 			sdp->sd_tune.gt_quota_scale_den);  in quota_scale_show()
560 	struct gfs2_tune *gt = &sdp->sd_tune;  in quota_scale_store()
563 	if (!capable(CAP_SYS_ADMIN))  in quota_scale_store()
564 		return -EPERM;  in quota_scale_store()
567 		return -EINVAL;  in quota_scale_store()
569 	spin_lock(&gt->gt_spin);  in quota_scale_store()
570 	gt->gt_quota_scale_num = x;  in quota_scale_store()
571 	gt->gt_quota_scale_den = y;  in quota_scale_store()
572 	spin_unlock(&gt->gt_spin);  in quota_scale_store()
579 	struct gfs2_tune *gt = &sdp->sd_tune;  in tune_set()
583 	if (!capable(CAP_SYS_ADMIN))  in tune_set()
584 		return -EPERM;  in tune_set()
591 		return -EINVAL;  in tune_set()
593 	spin_lock(&gt->gt_spin);  in tune_set()
595 	spin_unlock(&gt->gt_spin);  in tune_set()
605 	return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name);      \
612 	return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len);  \
649 	struct super_block *sb = sdp->sd_vfs;  in gfs2_sys_fs_add()
656 	sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);  in gfs2_sys_fs_add()
658 	init_completion(&sdp->sd_kobj_unregister);  in gfs2_sys_fs_add()
659 	sdp->sd_kobj.kset = gfs2_kset;  in gfs2_sys_fs_add()
660 	error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL,  in gfs2_sys_fs_add()
661 				     "%s", sdp->sd_table_name);  in gfs2_sys_fs_add()
665 	error = sysfs_create_group(&sdp->sd_kobj, &tune_group);  in gfs2_sys_fs_add()
669 	error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group);  in gfs2_sys_fs_add()
673 	error = sysfs_create_link(&sdp->sd_kobj,  in gfs2_sys_fs_add()
674 				  &disk_to_dev(sb->s_bdev->bd_disk)->kobj,  in gfs2_sys_fs_add()
679 	kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp);  in gfs2_sys_fs_add()
683 	sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);  in gfs2_sys_fs_add()
685 	sysfs_remove_group(&sdp->sd_kobj, &tune_group);  in gfs2_sys_fs_add()
688 	kobject_put(&sdp->sd_kobj);  in gfs2_sys_fs_add()
689 	wait_for_completion(&sdp->sd_kobj_unregister);  in gfs2_sys_fs_add()
690 	sb->s_fs_info = NULL;  in gfs2_sys_fs_add()
696 	sysfs_remove_link(&sdp->sd_kobj, "device");  in gfs2_sys_fs_del()
697 	sysfs_remove_group(&sdp->sd_kobj, &tune_group);  in gfs2_sys_fs_del()
698 	sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);  in gfs2_sys_fs_del()
699 	kobject_put(&sdp->sd_kobj);  in gfs2_sys_fs_del()
700 	wait_for_completion(&sdp->sd_kobj_unregister);  in gfs2_sys_fs_del()
707 	struct super_block *s = sdp->sd_vfs;  in gfs2_uevent()
709 	add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);  in gfs2_uevent()
710 	add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);  in gfs2_uevent()
711 	if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))  in gfs2_uevent()
712 		add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid);  in gfs2_uevent()
713 	if (!uuid_is_null(&s->s_uuid))  in gfs2_uevent()
714 		add_uevent_var(env, "UUID=%pUB", &s->s_uuid);  in gfs2_uevent()
726 		return -ENOMEM;  in gfs2_sys_init()