1 files changed, 89 insertions, 0 deletions
diff --git a/daemons/lvmetad/lvmetad-internal.h b/daemons/lvmetad/lvmetad-internal.h
new file mode 100644
index 000000000..8308f9e68
--- /dev/null
+++ b/daemons/lvmetad/lvmetad-internal.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2016 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 _LVM_LVMETAD_INTERNAL_H
+#define _LVM_LVMETAD_INTERNAL_H
+
+#define CMD_NAME_SIZE 32
+
+typedef struct {
+	daemon_idle *idle;
+	log_state *log; /* convenience */
+	const char *log_config;
+	int enable_udev_monitor;
+	int enable_autoactivate;
+
+	struct dm_hash_table *pvid_to_pvmeta;
+	struct dm_hash_table *device_to_pvid; /* shares locks with above */
+
+	struct dm_hash_table *vgid_to_metadata;
+	struct dm_hash_table *vgid_to_vgname;
+	struct dm_hash_table *vgid_to_outdated_pvs;
+	struct dm_hash_table *vgid_to_info;
+	struct dm_hash_table *vgname_to_vgid;
+	struct dm_hash_table *pvid_to_vgid;
+	char token[128];
+	char update_cmd[CMD_NAME_SIZE];
+	int update_pid;
+	int update_timeout;
+	uint64_t update_begin;
+	uint32_t flags; /* GLFL_ */
+	pthread_mutex_t token_lock;
+	pthread_mutex_t info_lock;
+	pthread_rwlock_t cache_lock;
+
+	int helper_pid;
+	int helper_pw_fd; /* parent write to send message to helper */
+	int helper_pr_fd; /* parent read to recv message from helper */
+
+	struct udev *udevh;
+	struct udev_monitor *udev_mon;
+	int udev_fd;
+} lvmetad_state;
+
+/*
+ * helper process
+ * recvs 512 byte helper_msg on in_fd
+ * sends 4 byte helper_status on out_fd
+ */
+
+/* max length of path and args, includes terminate \0 byte */
+
+#define HELPER_PATH_LEN    128
+#define HELPER_ARGS_LEN    128
+#define HELPER_MSG_LEN     512
+#define HELPER_MSG_RUNPATH 1
+
+struct helper_msg {
+	uint8_t type;
+	uint8_t pad1;
+	uint16_t pad2;
+	uint32_t flags;
+	int pid;
+	int unused;
+	char path[HELPER_PATH_LEN]; /* 128 */
+	char args[HELPER_ARGS_LEN]; /* 128 */
+	char pad[240];
+};
+
+#define HELPER_STARTED 1
+
+struct helper_status {
+	uint8_t type;
+	uint8_t status;
+	uint16_t len;
+};
+
+void close_helper(daemon_state *s);
+void send_helper_request(daemon_state *s, request r);
+int setup_helper(daemon_state *s);
+void setup_udev_monitor(daemon_state *s);
+
+#endif