1/*	$NetBSD$	*/
2
3/*
4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
5 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of LVM2.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16 */
17
18#ifndef LVM_ACTIVATE_H
19#define LVM_ACTIVATE_H
20
21#include "metadata-exported.h"
22
23struct lvinfo {
24	int exists;
25	int suspended;
26	unsigned int open_count;
27	int major;
28	int minor;
29	int read_only;
30	int live_table;
31	int inactive_table;
32	uint32_t read_ahead;
33};
34
35/* target attribute flags */
36#define MIRROR_LOG_CLUSTERED	0x00000001U
37
38void set_activation(int activation);
39int activation(void);
40
41int driver_version(char *version, size_t size);
42int library_version(char *version, size_t size);
43int lvm1_present(struct cmd_context *cmd);
44
45int module_present(struct cmd_context *cmd, const char *target_name);
46int target_present(struct cmd_context *cmd, const char *target_name,
47		   int use_modprobe);
48int target_version(const char *target_name, uint32_t *maj,
49                   uint32_t *min, uint32_t *patchlevel);
50int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
51			 struct dm_list *modules);
52int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
53		    struct dm_list *modules);
54
55void activation_release(void);
56void activation_exit(void);
57
58int lv_suspend(struct cmd_context *cmd, const char *lvid_s);
59int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s);
60int lv_resume(struct cmd_context *cmd, const char *lvid_s);
61int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s);
62int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive);
63int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s,
64			    int exclusive);
65int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
66
67int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv);
68
69/*
70 * Returns 1 if info structure has been populated, else 0.
71 */
72int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
73	    int with_open_count, int with_read_ahead);
74int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
75		    struct lvinfo *info, int with_open_count, int with_read_ahead);
76
77/*
78 * Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.
79 */
80int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
81			 int *activate_lv);
82
83/*
84 * Returns 1 if percent has been set, else 0.
85 */
86int lv_snapshot_percent(const struct logical_volume *lv, float *percent,
87			percent_range_t *percent_range);
88int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
89		      int wait, float *percent, percent_range_t *percent_range,
90		      uint32_t *event_nr);
91
92/*
93 * Return number of LVs in the VG that are active.
94 */
95int lvs_in_vg_activated(struct volume_group *vg);
96int lvs_in_vg_activated_by_uuid_only(struct volume_group *vg);
97int lvs_in_vg_opened(const struct volume_group *vg);
98
99int lv_is_active(struct logical_volume *lv);
100
101int monitor_dev_for_events(struct cmd_context *cmd,
102			    struct logical_volume *lv, int do_reg);
103
104/*
105 * Returns 1 if PV has a dependency tree that uses anything in VG.
106 */
107int pv_uses_vg(struct physical_volume *pv,
108	       struct volume_group *vg);
109
110/*
111 * Returns 1 if mapped device is not suspended.
112 */
113int device_is_usable(dev_t dev);
114
115#endif
116