--- /dev/null
+/*
+ * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
+ * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ *
+ * 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 General Public License version 2.
+ */
+
+#ifndef LOCK_DLM_DOT_H
+#define LOCK_DLM_DOT_H
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/socket.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/kobject.h>
+#include <linux/fcntl.h>
+#include <linux/wait.h>
+#include <net/sock.h>
+
+#include <linux/dlm.h>
+#include <linux/lm_interface.h>
+
+/*
+ * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
+ * prefix of lock_dlm_ gets awkward. Externally, GFS refers to this module
+ * as "lock_dlm".
+ */
+
+#define GDLM_STRNAME_BYTES 24
+#define GDLM_LVB_SIZE 32
+#define GDLM_DROP_COUNT 0
+#define GDLM_DROP_PERIOD 60
+#define GDLM_NAME_LEN 128
+
+/* GFS uses 12 bytes to identify a resource (32 bit type + 64 bit number).
+ We sprintf these numbers into a 24 byte string of hex values to make them
+ human-readable (to make debugging simpler.) */
+
+struct gdlm_strname {
+ unsigned char name[GDLM_STRNAME_BYTES];
+ unsigned short namelen;
+};
+
+enum {
+ DFL_BLOCK_LOCKS = 0,
+ DFL_SPECTATOR = 1,
+ DFL_WITHDRAW = 2,
+};
+
+struct gdlm_ls {
+ u32 id;
+ int jid;
+ int first;
+ int first_done;
+ unsigned long flags;
+ struct kobject kobj;
+ char clustername[GDLM_NAME_LEN];
+ char fsname[GDLM_NAME_LEN];
+ int fsflags;
+ dlm_lockspace_t *dlm_lockspace;
+ lm_callback_t fscb;
+ struct gfs2_sbd *sdp;
+ int recover_jid;
+ int recover_jid_done;
+ int recover_jid_status;
+ spinlock_t async_lock;
+ struct list_head complete;
+ struct list_head blocking;
+ struct list_head delayed;
+ struct list_head submit;
+ struct list_head all_locks;
+ u32 all_locks_count;
+ wait_queue_head_t wait_control;
+ struct task_struct *thread1;
+ struct task_struct *thread2;
+ wait_queue_head_t thread_wait;
+ unsigned long drop_time;
+ int drop_locks_count;
+ int drop_locks_period;
+};
+
+enum {
+ LFL_NOBLOCK = 0,
+ LFL_NOCACHE = 1,
+ LFL_DLM_UNLOCK = 2,
+ LFL_DLM_CANCEL = 3,
+ LFL_SYNC_LVB = 4,
+ LFL_FORCE_PROMOTE = 5,
+ LFL_REREQUEST = 6,
+ LFL_ACTIVE = 7,
+ LFL_INLOCK = 8,
+ LFL_CANCEL = 9,
+ LFL_NOBAST = 10,
+ LFL_HEADQUE = 11,
+ LFL_UNLOCK_DELETE = 12,
+};
+
+struct gdlm_lock {
+ struct gdlm_ls *ls;
+ struct lm_lockname lockname;
+ struct gdlm_strname strname;
+ char *lvb;
+ struct dlm_lksb lksb;
+
+ s16 cur;
+ s16 req;
+ s16 prev_req;
+ u32 lkf; /* dlm flags DLM_LKF_ */
+ unsigned long flags; /* lock_dlm flags LFL_ */
+
+ int bast_mode; /* protected by async_lock */
+ struct completion ast_wait;
+
+ struct list_head clist; /* complete */
+ struct list_head blist; /* blocking */
+ struct list_head delay_list; /* delayed */
+ struct list_head all_list; /* all locks for the fs */
+ struct gdlm_lock *hold_null; /* NL lock for hold_lvb */
+};
+
+#define gdlm_assert(assertion, fmt, args...) \
+do { \
+ if (unlikely(!(assertion))) { \
+ printk(KERN_EMERG "lock_dlm: fatal assertion failed \"%s\"\n" \
+ "lock_dlm: " fmt "\n", \
+ #assertion, ##args); \
+ BUG(); \
+ } \
+} while (0)
+
+#define log_print(lev, fmt, arg...) printk(lev "lock_dlm: " fmt "\n" , ## arg)
+#define log_info(fmt, arg...) log_print(KERN_INFO , fmt , ## arg)
+#define log_error(fmt, arg...) log_print(KERN_ERR , fmt , ## arg)
+#ifdef LOCK_DLM_LOG_DEBUG
+#define log_debug(fmt, arg...) log_print(KERN_DEBUG , fmt , ## arg)
+#else
+#define log_debug(fmt, arg...)
+#endif
+
+/* sysfs.c */
+
+int gdlm_sysfs_init(void);
+void gdlm_sysfs_exit(void);
+int gdlm_kobject_setup(struct gdlm_ls *, struct kobject *);
+void gdlm_kobject_release(struct gdlm_ls *);
+
+/* thread.c */
+
+int gdlm_init_threads(struct gdlm_ls *);
+void gdlm_release_threads(struct gdlm_ls *);
+
+/* lock.c */
+
+s16 gdlm_make_lmstate(s16);
+void gdlm_queue_delayed(struct gdlm_lock *);
+void gdlm_submit_delayed(struct gdlm_ls *);
+int gdlm_release_all_locks(struct gdlm_ls *);
+void gdlm_delete_lp(struct gdlm_lock *);
+unsigned int gdlm_do_lock(struct gdlm_lock *);
+
+int gdlm_get_lock(void *, struct lm_lockname *, void **);
+void gdlm_put_lock(void *);
+unsigned int gdlm_lock(void *, unsigned int, unsigned int, unsigned int);
+unsigned int gdlm_unlock(void *, unsigned int);
+void gdlm_cancel(void *);
+int gdlm_hold_lvb(void *, char **);
+void gdlm_unhold_lvb(void *, char *);
+
+/* plock.c */
+
+int gdlm_plock_init(void);
+void gdlm_plock_exit(void);
+int gdlm_plock(void *, struct lm_lockname *, struct file *, int,
+ struct file_lock *);
+int gdlm_plock_get(void *, struct lm_lockname *, struct file *,
+ struct file_lock *);
+int gdlm_punlock(void *, struct lm_lockname *, struct file *,
+ struct file_lock *);
+#endif
+
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