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7f97c7ea9a
As we start refactoring the code to break dependencies (see doc/refactoring.txt), I want us to use full paths in the includes (eg, #include "base/data-struct/list.h"). This makes it more obvious when we're breaking abstraction boundaries, eg, including a file in metadata/ from base/
246 lines
6.6 KiB
C
246 lines
6.6 KiB
C
/*
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* Copyright (C) 2014-2015 Red Hat, Inc.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*/
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#ifndef _LVMLOCKD_H
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#define _LVMLOCKD_H
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#include "libdaemon/client/config-util.h"
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#include "libdaemon/client/daemon-client.h"
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#define LOCKD_SANLOCK_LV_NAME "lvmlock"
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/* lockd_gl flags */
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#define LDGL_UPDATE_NAMES 0x00000001
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/* lockd_lv flags */
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#define LDLV_MODE_NO_SH 0x00000001
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#define LDLV_PERSISTENT 0x00000002
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/* lvmlockd result flags */
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#define LD_RF_NO_LOCKSPACES 0x00000001
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#define LD_RF_NO_GL_LS 0x00000002
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#define LD_RF_WARN_GL_REMOVED 0x00000004
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#define LD_RF_DUP_GL_LS 0x00000008
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#define LD_RF_NO_LM 0x00000010
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/* lockd_state flags */
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#define LDST_EX 0x00000001
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#define LDST_SH 0x00000002
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#define LDST_FAIL_REQUEST 0x00000004
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#define LDST_FAIL_NOLS 0x00000008
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#define LDST_FAIL_STARTING 0x00000010
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#define LDST_FAIL_OTHER 0x00000020
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#define LDST_FAIL (LDST_FAIL_REQUEST | LDST_FAIL_NOLS | LDST_FAIL_STARTING | LDST_FAIL_OTHER)
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#ifdef LVMLOCKD_SUPPORT
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/* lvmlockd connection and communication */
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void lvmlockd_set_socket(const char *sock);
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void lvmlockd_set_use(int use);
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int lvmlockd_use(void);
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void lvmlockd_init(struct cmd_context *cmd);
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void lvmlockd_connect(void);
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void lvmlockd_disconnect(void);
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/* vgcreate/vgremove use init/free */
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int lockd_init_vg(struct cmd_context *cmd, struct volume_group *vg, const char *lock_type, int lv_lock_count);
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int lockd_free_vg_before(struct cmd_context *cmd, struct volume_group *vg, int changing);
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void lockd_free_vg_final(struct cmd_context *cmd, struct volume_group *vg);
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/* vgrename */
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int lockd_rename_vg_before(struct cmd_context *cmd, struct volume_group *vg);
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int lockd_rename_vg_final(struct cmd_context *cmd, struct volume_group *vg, int success);
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/* start and stop the lockspace for a vg */
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int lockd_start_vg(struct cmd_context *cmd, struct volume_group *vg, int start_init);
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int lockd_stop_vg(struct cmd_context *cmd, struct volume_group *vg);
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int lockd_start_wait(struct cmd_context *cmd);
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/* locking */
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int lockd_gl_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type);
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int lockd_gl(struct cmd_context *cmd, const char *def_mode, uint32_t flags);
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int lockd_vg(struct cmd_context *cmd, const char *vg_name, const char *def_mode,
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uint32_t flags, uint32_t *lockd_state);
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int lockd_vg_update(struct volume_group *vg);
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int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id,
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const char *lock_args, const char *def_mode, uint32_t flags);
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int lockd_lv(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags);
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/* lvcreate/lvremove use init/free */
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int lockd_init_lv(struct cmd_context *cmd, struct volume_group *vg, struct logical_volume *lv,
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struct lvcreate_params *lp);
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int lockd_init_lv_args(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv, const char *lock_type, const char **lock_args);
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int lockd_free_lv(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id, const char *lock_args);
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const char *lockd_running_lock_type(struct cmd_context *cmd, int *found_multiple);
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int handle_sanlock_lv(struct cmd_context *cmd, struct volume_group *vg);
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int lockd_lv_uses_lock(struct logical_volume *lv);
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#else /* LVMLOCKD_SUPPORT */
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static inline void lvmlockd_set_socket(const char *sock)
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{
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}
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static inline void lvmlockd_set_use(int use)
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{
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}
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static inline void lvmlockd_init(struct cmd_context *cmd)
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{
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}
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static inline void lvmlockd_disconnect(void)
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{
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}
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static inline void lvmlockd_connect(void)
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{
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}
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static inline int lvmlockd_use(void)
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{
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return 0;
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}
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static inline int lockd_init_vg(struct cmd_context *cmd, struct volume_group *vg, const char *lock_type, int lv_lock_count)
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{
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return 1;
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}
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static inline int lockd_free_vg_before(struct cmd_context *cmd, struct volume_group *vg, int changing)
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{
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return 1;
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}
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static inline void lockd_free_vg_final(struct cmd_context *cmd, struct volume_group *vg)
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{
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return;
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}
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static inline int lockd_rename_vg_before(struct cmd_context *cmd, struct volume_group *vg)
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{
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return 1;
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}
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static inline int lockd_rename_vg_final(struct cmd_context *cmd, struct volume_group *vg, int success)
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{
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return 1;
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}
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static inline int lockd_start_vg(struct cmd_context *cmd, struct volume_group *vg, int start_init)
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{
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return 0;
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}
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static inline int lockd_stop_vg(struct cmd_context *cmd, struct volume_group *vg)
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{
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return 0;
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}
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static inline int lockd_start_wait(struct cmd_context *cmd)
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{
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return 0;
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}
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static inline int lockd_gl_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type)
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{
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/*
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* When lvm is built without lvmlockd support, creating a VG with
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* a shared lock type should fail.
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*/
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if (is_lockd_type(vg_lock_type)) {
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log_error("Using a shared lock type requires lvmlockd.");
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return 0;
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}
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return 1;
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}
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static inline int lockd_gl(struct cmd_context *cmd, const char *def_mode, uint32_t flags)
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{
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return 1;
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}
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static inline int lockd_vg(struct cmd_context *cmd, const char *vg_name, const char *def_mode,
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uint32_t flags, uint32_t *lockd_state)
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{
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*lockd_state = 0;
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return 1;
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}
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static inline int lockd_vg_update(struct volume_group *vg)
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{
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return 1;
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}
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static inline int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id,
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const char *lock_args, const char *def_mode, uint32_t flags)
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{
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return 1;
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}
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static inline int lockd_lv(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags)
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{
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return 1;
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}
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static inline int lockd_init_lv(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv, struct lvcreate_params *lp)
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{
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return 1;
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}
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static inline int lockd_init_lv_args(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv, const char *lock_type, const char **lock_args)
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{
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return 1;
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}
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static inline int lockd_free_lv(struct cmd_context *cmd, struct volume_group *vg,
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const char *lv_name, struct id *lv_id, const char *lock_args)
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{
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return 1;
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}
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static inline const char *lockd_running_lock_type(struct cmd_context *cmd, int *found_multiple)
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{
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log_error("Using a shared lock type requires lvmlockd.");
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return NULL;
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}
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static inline int handle_sanlock_lv(struct cmd_context *cmd, struct volume_group *vg)
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{
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return 0;
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}
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static inline int lockd_lv_uses_lock(struct logical_volume *lv)
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{
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return 0;
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}
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#endif /* LVMLOCKD_SUPPORT */
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#endif /* _LVMLOCKD_H */
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