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82d145a372
With updated functionality for lvmlockd some prototypes needs to be updated for builds without lvmlockd.
294 lines
8.0 KiB
C
294 lines
8.0 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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#include "lib/metadata/metadata-exported.h" /* is_lockd_type() */
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#define LOCKD_SANLOCK_LV_NAME "lvmlock"
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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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#define LDLV_SH_EXISTS_OK 0x00000004
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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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#define LD_RF_SH_EXISTS 0x00000020
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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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/* --lockopt flags */
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#define LOCKOPT_FORCE 0x00000001
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#define LOCKOPT_SHUPDATE 0x00000002
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#define LOCKOPT_NOREFRESH 0x00000004
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#define LOCKOPT_SKIPGL 0x00000008
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#define LOCKOPT_SKIPVG 0x00000010
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#define LOCKOPT_SKIPLV 0x00000020
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#define LOCKOPT_AUTO 0x00000040
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#define LOCKOPT_NOWAIT 0x00000080
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#define LOCKOPT_AUTONOWAIT 0x00000100
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#define LOCKOPT_ADOPTLS 0x00000200
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#define LOCKOPT_ADOPTGL 0x00000400
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#define LOCKOPT_ADOPTVG 0x00000800
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#define LOCKOPT_ADOPTLV 0x00001000
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#define LOCKOPT_ADOPT 0x00002000
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#ifdef LVMLOCKD_SUPPORT
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void lockd_lockopt_get_flags(const char *str, uint32_t *flags);
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struct lvresize_params;
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struct lvcreate_params;
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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, int yes);
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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 *exists);
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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_global_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type);
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int lockd_global(struct cmd_context *cmd, const char *def_mode);
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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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int lockd_lv_resize(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags, struct lvresize_params *lp);
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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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int lockd_lv_refresh(struct cmd_context *cmd, struct lvresize_params *lp);
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int lockd_query_lv(struct cmd_context *cmd, struct logical_volume *lv, int *ex, int *sh);
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#else /* LVMLOCKD_SUPPORT */
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static inline void lockd_lockopt_get_flags(const char *str, uint32_t *flags)
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{
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}
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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, int yes)
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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 *exists)
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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_global_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_global(struct cmd_context *cmd, const char *def_mode)
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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_lv_resize(struct cmd_context *cmd, struct logical_volume *lv,
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const char *def_mode, uint32_t flags, struct lvresize_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(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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static inline int lockd_lv_refresh(struct cmd_context *cmd, struct lvresize_params *lp)
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{
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return 0;
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}
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static inline int lockd_query_lv(struct cmd_context *cmd, struct logical_volume *lv, int *ex, int *sh)
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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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