1 files changed, 239 insertions, 0 deletions
diff --git a/lib/locking/lvmlockd.h b/lib/locking/lvmlockd.h
new file mode 100644
index 000000000..20cd7def4
--- /dev/null
+++ b/lib/locking/lvmlockd.h
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ */
+
+#ifndef _LVMLOCKD_H
+#define _LVMLOCKD_H
+
+#include "config-util.h"
+#include "daemon-client.h"
+
+#define LOCKD_SANLOCK_LV_NAME "lvmlock"
+
+/* lockd_gl flags */
+#define LDGL_SKIP_CACHE_VALIDATE  0x00000001
+#define LDGL_UPDATE_NAMES         0x00000002
+
+/* lockd_lv flags */
+#define LDLV_MODE_NO_SH           0x00000001
+#define LDLV_PERSISTENT           0x00000002
+
+/* lvmlockd result flags */
+#define LD_RF_NO_LOCKSPACES     0x00000001
+#define LD_RF_NO_GL_LS          0x00000002
+#define LD_RF_LOCAL_LS          0x00000004
+#define LD_RF_DUP_GL_LS         0x00000008
+#define LD_RF_INACTIVE_LS       0x00000010
+#define LD_RF_ADD_LS_ERROR      0x00000020
+
+/* lockd_state flags */
+#define LDST_EX			0x00000001
+#define LDST_SH			0x00000002
+#define LDST_FAIL_REQUEST	0x00000004
+#define LDST_FAIL_NOLS		0x00000008
+#define LDST_FAIL_STARTING	0x00000010
+#define LDST_FAIL_OTHER		0x00000020
+#define LDST_FAIL		(LDST_FAIL_REQUEST | LDST_FAIL_NOLS | LDST_FAIL_STARTING | LDST_FAIL_OTHER)
+
+#ifdef LVMLOCKD_SUPPORT
+
+/* lvmlockd connection and communication */
+
+void lvmlockd_set_socket(const char *sock);
+void lvmlockd_set_use(int use);
+int lvmlockd_use(void);
+void lvmlockd_init(struct cmd_context *cmd);
+void lvmlockd_connect(void);
+void lvmlockd_disconnect(void);
+
+/* vgcreate/vgremove use init/free */
+
+int lockd_init_vg(struct cmd_context *cmd, struct volume_group *vg, const char *lock_type);
+int lockd_free_vg_before(struct cmd_context *cmd, struct volume_group *vg);
+void lockd_free_vg_final(struct cmd_context *cmd, struct volume_group *vg);
+
+/* vgrename */
+
+int lockd_rename_vg_before(struct cmd_context *cmd, struct volume_group *vg);
+int lockd_rename_vg_final(struct cmd_context *cmd, struct volume_group *vg, int success);
+
+/* start and stop the lockspace for a vg */
+
+int lockd_start_vg(struct cmd_context *cmd, struct volume_group *vg);
+int lockd_stop_vg(struct cmd_context *cmd, struct volume_group *vg);
+int lockd_start_wait(struct cmd_context *cmd);
+
+/* locking */
+
+int lockd_gl_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type);
+int lockd_gl(struct cmd_context *cmd, const char *def_mode, uint32_t flags);
+int lockd_vg(struct cmd_context *cmd, const char *vg_name, const char *def_mode,
+	     uint32_t flags, uint32_t *lockd_state);
+int lockd_vg_update(struct volume_group *vg);
+
+int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
+		  const char *lv_name, struct id *lv_id,
+		  const char *lock_args, const char *def_mode, uint32_t flags);
+int lockd_lv(struct cmd_context *cmd, struct logical_volume *lv,
+	     const char *def_mode, uint32_t flags);
+
+/* lvcreate/lvremove use init/free */
+
+int lockd_init_lv(struct cmd_context *cmd, struct volume_group *vg, struct logical_volume *lv,
+		  struct lvcreate_params *lp);
+int lockd_init_lv_args(struct cmd_context *cmd, struct volume_group *vg,
+		       struct logical_volume *lv, const char *lock_type, const char **lock_args);
+int lockd_free_lv(struct cmd_context *cmd, struct volume_group *vg,
+		  const char *lv_name, struct id *lv_id, const char *lock_args);
+
+const char *lockd_running_lock_type(struct cmd_context *cmd);
+
+int handle_sanlock_lv(struct cmd_context *cmd, struct volume_group *vg);
+
+int lockd_lv_uses_lock(struct logical_volume *lv);
+
+#else /* LVMLOCKD_SUPPORT */
+
+static inline void lvmlockd_set_socket(const char *sock)
+{
+}
+
+static inline void lvmlockd_set_use(int use)
+{
+}
+
+static inline void lvmlockd_init(struct cmd_context *cmd)
+{
+}
+
+static inline void lvmlockd_disconnect(void)
+{
+}
+
+static inline void lvmlockd_connect(void)
+{
+}
+
+static inline int lvmlockd_use(void)
+{
+	return 0;
+}
+
+static inline int lockd_init_vg(struct cmd_context *cmd, struct volume_group *vg, const char *lock_type)
+{
+	return 1;
+}
+
+static inline int lockd_free_vg_before(struct cmd_context *cmd, struct volume_group *vg)
+{
+	return 1;
+}
+
+static inline void lockd_free_vg_final(struct cmd_context *cmd, struct volume_group *vg)
+{
+	return;
+}
+
+static inline int lockd_rename_vg_before(struct cmd_context *cmd, struct volume_group *vg)
+{
+	return 1;
+}
+
+static inline int lockd_rename_vg_final(struct cmd_context *cmd, struct volume_group *vg, int success)
+{
+	return 1;
+}
+
+static inline int lockd_start_vg(struct cmd_context *cmd, struct volume_group *vg)
+{
+	return 0;
+}
+
+static inline int lockd_stop_vg(struct cmd_context *cmd, struct volume_group *vg)
+{
+	return 0;
+}
+
+static inline int lockd_start_wait(struct cmd_context *cmd)
+{
+	return 0;
+}
+
+static inline int lockd_gl_create(struct cmd_context *cmd, const char *def_mode, const char *vg_lock_type)
+{
+	return 1;
+}
+
+static inline int lockd_gl(struct cmd_context *cmd, const char *def_mode, uint32_t flags)
+{
+	return 1;
+}
+
+static inline int lockd_vg(struct cmd_context *cmd, const char *vg_name, const char *def_mode,
+	     uint32_t flags, uint32_t *lockd_state)
+{
+	*lockd_state = 0;
+	return 1;
+}
+
+static inline int lockd_vg_update(struct volume_group *vg)
+{
+	return 1;
+}
+
+static inline int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
+		  const char *lv_name, struct id *lv_id,
+		  const char *lock_args, const char *def_mode, uint32_t flags)
+{
+	return 1;
+}
+
+static inline int lockd_lv(struct cmd_context *cmd, struct logical_volume *lv,
+	     const char *def_mode, uint32_t flags)
+{
+	return 1;
+}
+
+static inline int lockd_init_lv(struct cmd_context *cmd, struct volume_group *vg,
+		  	struct logical_volume *lv, struct lvcreate_params *lp)
+{
+	return 0;
+}
+
+static inline int lockd_init_lv_args(struct cmd_context *cmd, struct volume_group *vg,
+		       struct logical_volume *lv, const char *lock_type, const char **lock_args)
+{
+	return 0;
+}
+
+static inline int lockd_free_lv(struct cmd_context *cmd, struct volume_group *vg,
+		  const char *lv_name, struct id *lv_id, const char *lock_args)
+{
+	return 0;
+}
+
+static inline const char *lockd_running_lock_type(struct cmd_context *cmd)
+{
+	return NULL;
+}
+
+static inline int handle_sanlock_lv(struct cmd_context *cmd, struct volume_group *vg)
+{
+	return 0;
+}
+
+static inline int lockd_lv_uses_lock(struct logical_volume *lv)
+{
+	return 0;
+}
+
+#endif /* LVMLOCKD_SUPPORT */
+
+#endif
+