This patch looks bigger than it is. It does 2 things. 1). Renames smbpid -> smblctx in our locking code. 2). Widens smblctx to 64-bits internally. Preparing to use the SMB2 handle as the locking context.

Jeremy.

10 files changed, 150 insertions, 150 deletions

diff --git a/source3/include/locking.h b/source3/include/locking.h
index ee59cad643..88104b0fef 100644
--- a/source3/include/locking.h
+++ b/source3/include/locking.h
@@ -36,7 +36,7 @@ enum brl_flavour {WINDOWS_LOCK = 0, POSIX_LOCK = 1};
    this client */
 
 struct lock_context {
-	uint32 smbpid;
+	uint64_t smblctx;
 	uint16 tid;
 	struct server_id pid;
 };
@@ -88,8 +88,8 @@ struct blocking_lock_record {
 	int lock_num;
 	uint64_t offset;
 	uint64_t count;
-	uint32_t lock_pid;
-	uint32_t blocking_pid; /* PID that blocks us. */
+	uint64_t smblctx;
+	uint64_t blocking_smblctx; /* Context that blocks us. */
 	enum brl_flavour lock_flav;
 	enum brl_type lock_type;
 	struct smb_request *req;
@@ -97,7 +97,7 @@ struct blocking_lock_record {
 };
 
 struct smbd_lock_element {
-	uint32_t smbpid;
+	uint64_t smblctx;
 	enum brl_type brltype;
 	uint64_t offset;
 	uint64_t count;
diff --git a/source3/include/proto.h b/source3/include/proto.h
index f05f76b961..a3ba7472a8 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -3374,18 +3374,18 @@ NTSTATUS brl_lock_windows_default(struct byte_range_lock *br_lck,
 
 NTSTATUS brl_lock(struct messaging_context *msg_ctx,
 		struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size, 
 		enum brl_type lock_type,
 		enum brl_flavour lock_flav,
 		bool blocking_lock,
-		uint32 *psmbpid,
+		uint64_t *psmblctx,
 		struct blocking_lock_record *blr);
 bool brl_unlock(struct messaging_context *msg_ctx,
 		struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size,
@@ -3394,21 +3394,21 @@ bool brl_unlock_windows_default(struct messaging_context *msg_ctx,
 			       struct byte_range_lock *br_lck,
 			       const struct lock_struct *plock);
 bool brl_locktest(struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size, 
 		enum brl_type lock_type,
 		enum brl_flavour lock_flav);
 NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
-		uint32 *psmbpid,
+		uint64_t *psmblctx,
 		struct server_id pid,
 		br_off *pstart,
 		br_off *psize, 
 		enum brl_type *plock_type,
 		enum brl_flavour lock_flav);
 bool brl_lock_cancel(struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size,
@@ -3434,7 +3434,7 @@ void brl_register_msgs(struct messaging_context *msg_ctx);
 const char *lock_type_name(enum brl_type lock_type);
 const char *lock_flav_name(enum brl_flavour lock_flav);
 void init_strict_lock_struct(files_struct *fsp,
-				uint32 smbpid,
+				uint64_t smblctx,
 				br_off start,
 				br_off size,
 				enum brl_type lock_type,
@@ -3444,30 +3444,30 @@ bool strict_lock_default(files_struct *fsp,
 void strict_unlock_default(files_struct *fsp,
 				struct lock_struct *plock);
 NTSTATUS query_lock(files_struct *fsp,
-			uint32 *psmbpid,
+			uint64_t *psmblctx,
 			uint64_t *pcount,
 			uint64_t *poffset,
 			enum brl_type *plock_type,
 			enum brl_flavour lock_flav);
 struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
 			files_struct *fsp,
-			uint32 lock_pid,
+			uint64_t smblctx,
 			uint64_t count,
 			uint64_t offset,
 			enum brl_type lock_type,
 			enum brl_flavour lock_flav,
 			bool blocking_lock,
 			NTSTATUS *perr,
-			uint32 *plock_pid,
+			uint64_t *psmblctx,
 			struct blocking_lock_record *blr);
 NTSTATUS do_unlock(struct messaging_context *msg_ctx,
 			files_struct *fsp,
-			uint32 lock_pid,
+			uint64_t smblctx,
 			uint64_t count,
 			uint64_t offset,
 			enum brl_flavour lock_flav);
 NTSTATUS do_lock_cancel(files_struct *fsp,
-			uint32 lock_pid,
+			uint64 smblctx,
 			uint64_t count,
 			uint64_t offset,
 			enum brl_flavour lock_flav,
@@ -5997,19 +5997,19 @@ bool push_blocking_lock_request( struct byte_range_lock *br_lck,
 		files_struct *fsp,
 		int lock_timeout,
 		int lock_num,
-		uint32 lock_pid,
+		uint64_t smblctx,
 		enum brl_type lock_type,
 		enum brl_flavour lock_flav,
 		uint64_t offset,
 		uint64_t count,
-		uint32 blocking_pid);
+		uint64_t blocking_smblctx);
 void cancel_pending_lock_requests_by_fid(files_struct *fsp,
 			struct byte_range_lock *br_lck,
 			enum file_close_type close_type);
 void remove_pending_lock_requests_by_mid_smb1(uint64_t mid);
 bool blocking_lock_was_deferred_smb1(uint64_t mid);
 struct blocking_lock_record *blocking_lock_cancel_smb1(files_struct *fsp,
-			uint32 lock_pid,
+			uint64_t smblctx,
 			uint64_t offset,
 			uint64_t count,
 			enum brl_flavour lock_flav,
@@ -6868,7 +6868,7 @@ NTSTATUS copy_file(TALLOC_CTX *ctx,
 			int count,
 			bool target_is_directory);
 void reply_copy(struct smb_request *req);
-uint32 get_lock_pid(const uint8_t *data, int data_offset,
+uint64_t get_lock_pid(const uint8_t *data, int data_offset,
 		    bool large_file_format);
 uint64_t get_lock_count(const uint8_t *data, int data_offset,
 			bool large_file_format);
diff --git a/source3/locking/brlock.c b/source3/locking/brlock.c
index c46221731d..985b98a468 100644
--- a/source3/locking/brlock.c
+++ b/source3/locking/brlock.c
@@ -42,9 +42,9 @@ static struct db_context *brlock_db;
 
 static void print_lock_struct(unsigned int i, struct lock_struct *pls)
 {
-	DEBUG(10,("[%u]: smbpid = %u, tid = %u, pid = %s, ",
+	DEBUG(10,("[%u]: smblctx = %llu, tid = %u, pid = %s, ",
 			i,
-			(unsigned int)pls->context.smbpid,
+			(unsigned long long)pls->context.smblctx,
 			(unsigned int)pls->context.tid,
 			procid_str(talloc_tos(), &pls->context.pid) ));
 	
@@ -64,7 +64,7 @@ bool brl_same_context(const struct lock_context *ctx1,
 			     const struct lock_context *ctx2)
 {
 	return (procid_equal(&ctx1->pid, &ctx2->pid) &&
-		(ctx1->smbpid == ctx2->smbpid) &&
+		(ctx1->smblctx == ctx2->smblctx) &&
 		(ctx1->tid == ctx2->tid));
 }
 
@@ -342,7 +342,7 @@ NTSTATUS brl_lock_windows_default(struct byte_range_lock *br_lck,
 		/* Do any Windows or POSIX locks conflict ? */
 		if (brl_conflict(&locks[i], plock)) {
 			/* Remember who blocked us. */
-			plock->context.smbpid = locks[i].context.smbpid;
+			plock->context.smblctx = locks[i].context.smblctx;
 			return brl_lock_failed(fsp,plock,blocking_lock);
 		}
 #if ZERO_ZERO
@@ -373,7 +373,7 @@ NTSTATUS brl_lock_windows_default(struct byte_range_lock *br_lck,
 				&errno_ret)) {
 
 			/* We don't know who blocked us. */
-			plock->context.smbpid = 0xFFFFFFFF;
+			plock->context.smblctx = 0xFFFFFFFFFFFFFFFFLL;
 
 			if (errno_ret == EACCES || errno_ret == EAGAIN) {
 				status = NT_STATUS_FILE_LOCK_CONFLICT;
@@ -747,7 +747,7 @@ static NTSTATUS brl_lock_posix(struct messaging_context *msg_ctx,
 				/* No games with error messages. */
 				SAFE_FREE(tp);
 				/* Remember who blocked us. */
-				plock->context.smbpid = curr_lock->context.smbpid;
+				plock->context.smblctx = curr_lock->context.smblctx;
 				return NT_STATUS_FILE_LOCK_CONFLICT;
 			}
 			/* Just copy the Windows lock into the new array. */
@@ -762,7 +762,7 @@ static NTSTATUS brl_lock_posix(struct messaging_context *msg_ctx,
 				/* No games with error messages. */
 				SAFE_FREE(tp);
 				/* Remember who blocked us. */
-				plock->context.smbpid = curr_lock->context.smbpid;
+				plock->context.smblctx = curr_lock->context.smblctx;
 				return NT_STATUS_FILE_LOCK_CONFLICT;
 			}
 
@@ -822,7 +822,7 @@ static NTSTATUS brl_lock_posix(struct messaging_context *msg_ctx,
 				&errno_ret)) {
 
 			/* We don't know who blocked us. */
-			plock->context.smbpid = 0xFFFFFFFF;
+			plock->context.smblctx = 0xFFFFFFFFFFFFFFFFLL;
 
 			if (errno_ret == EACCES || errno_ret == EAGAIN) {
 				SAFE_FREE(tp);
@@ -902,14 +902,14 @@ NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
 
 NTSTATUS brl_lock(struct messaging_context *msg_ctx,
 		struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size, 
 		enum brl_type lock_type,
 		enum brl_flavour lock_flav,
 		bool blocking_lock,
-		uint32 *psmbpid,
+		uint64_t *psmblctx,
 		struct blocking_lock_record *blr)
 {
 	NTSTATUS ret;
@@ -926,7 +926,7 @@ NTSTATUS brl_lock(struct messaging_context *msg_ctx,
 	memset(&lock, '\0', sizeof(lock));
 #endif
 
-	lock.context.smbpid = smbpid;
+	lock.context.smblctx = smblctx;
 	lock.context.pid = pid;
 	lock.context.tid = br_lck->fsp->conn->cnum;
 	lock.start = start;
@@ -948,8 +948,8 @@ NTSTATUS brl_lock(struct messaging_context *msg_ctx,
 #endif
 
 	/* If we're returning an error, return who blocked us. */
-	if (!NT_STATUS_IS_OK(ret) && psmbpid) {
-		*psmbpid = lock.context.smbpid;
+	if (!NT_STATUS_IS_OK(ret) && psmblctx) {
+		*psmblctx = lock.context.smblctx;
 	}
 	return ret;
 }
@@ -1235,7 +1235,7 @@ bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
 
 bool brl_unlock(struct messaging_context *msg_ctx,
 		struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size,
@@ -1243,7 +1243,7 @@ bool brl_unlock(struct messaging_context *msg_ctx,
 {
 	struct lock_struct lock;
 
-	lock.context.smbpid = smbpid;
+	lock.context.smblctx = smblctx;
 	lock.context.pid = pid;
 	lock.context.tid = br_lck->fsp->conn->cnum;
 	lock.start = start;
@@ -1266,7 +1266,7 @@ bool brl_unlock(struct messaging_context *msg_ctx,
 ****************************************************************************/
 
 bool brl_locktest(struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size, 
@@ -1279,7 +1279,7 @@ bool brl_locktest(struct byte_range_lock *br_lck,
 	const struct lock_struct *locks = br_lck->lock_data;
 	files_struct *fsp = br_lck->fsp;
 
-	lock.context.smbpid = smbpid;
+	lock.context.smblctx = smblctx;
 	lock.context.pid = pid;
 	lock.context.tid = br_lck->fsp->conn->cnum;
 	lock.start = start;
@@ -1324,7 +1324,7 @@ bool brl_locktest(struct byte_range_lock *br_lck,
 ****************************************************************************/
 
 NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
-		uint32 *psmbpid,
+		uint64_t *psmblctx,
 		struct server_id pid,
 		br_off *pstart,
 		br_off *psize, 
@@ -1336,7 +1336,7 @@ NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
 	const struct lock_struct *locks = br_lck->lock_data;
 	files_struct *fsp = br_lck->fsp;
 
-	lock.context.smbpid = *psmbpid;
+	lock.context.smblctx = *psmblctx;
 	lock.context.pid = pid;
 	lock.context.tid = br_lck->fsp->conn->cnum;
 	lock.start = *pstart;
@@ -1357,7 +1357,7 @@ NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
 		}
 
 		if (conflict) {
-			*psmbpid = exlock->context.smbpid;
+			*psmblctx = exlock->context.smblctx;
         		*pstart = exlock->start;
 		        *psize = exlock->size;
         		*plock_type = exlock->lock_type;
@@ -1378,8 +1378,8 @@ NTSTATUS brl_lockquery(struct byte_range_lock *br_lck,
 			fsp->fnum, fsp_str_dbg(fsp)));
 
 		if (ret) {
-			/* Hmmm. No clue what to set smbpid to - use -1. */
-			*psmbpid = 0xFFFF;
+			/* Hmmm. No clue what to set smblctx to - use -1. */
+			*psmblctx = 0xFFFFFFFFFFFFFFFFLL;
 			return NT_STATUS_LOCK_NOT_GRANTED;
 		}
         }
@@ -1401,7 +1401,7 @@ bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
  Remove a particular pending lock.
 ****************************************************************************/
 bool brl_lock_cancel(struct byte_range_lock *br_lck,
-		uint32 smbpid,
+		uint64_t smblctx,
 		struct server_id pid,
 		br_off start,
 		br_off size,
@@ -1411,7 +1411,7 @@ bool brl_lock_cancel(struct byte_range_lock *br_lck,
 	bool ret;
 	struct lock_struct lock;
 
-	lock.context.smbpid = smbpid;
+	lock.context.smblctx = smblctx;
 	lock.context.pid = pid;
 	lock.context.tid = br_lck->fsp->conn->cnum;
 	lock.start = start;
@@ -1533,7 +1533,7 @@ void brl_close_fnum(struct messaging_context *msg_ctx,
 						(lock->fnum == fnum)) {
 					brl_unlock(msg_ctx,
 						br_lck,
-						lock->context.smbpid,
+						lock->context.smblctx,
 						pid,
 						lock->start,
 						lock->size,
@@ -1646,7 +1646,7 @@ static bool validate_lock_entries(unsigned int *pnum_entries, struct lock_struct
 			num_valid_entries = 0;
 			for (i = 0; i < *pnum_entries; i++) {
 				struct lock_struct *lock_data = &locks[i];
-				if (lock_data->context.smbpid &&
+				if (lock_data->context.smblctx &&
 						lock_data->context.tid) {
 					/* Valid (nonzero) entry - copy it. */
 					memcpy(&new_lock_data[num_valid_entries],
diff --git a/source3/locking/locking.c b/source3/locking/locking.c
index dc43f9e182..917b436e18 100644
--- a/source3/locking/locking.c
+++ b/source3/locking/locking.c
@@ -77,7 +77,7 @@ const char *lock_flav_name(enum brl_flavour lock_flav)
 ****************************************************************************/
 
 void init_strict_lock_struct(files_struct *fsp,
-				uint32 smbpid,
+				uint64_t smblctx,
 				br_off start,
 				br_off size,
 				enum brl_type lock_type,
@@ -85,7 +85,7 @@ void init_strict_lock_struct(files_struct *fsp,
 {
 	SMB_ASSERT(lock_type == READ_LOCK || lock_type == WRITE_LOCK);
 
-	plock->context.smbpid = smbpid;
+	plock->context.smblctx = smblctx;
         plock->context.tid = fsp->conn->cnum;
         plock->context.pid = procid_self();
         plock->start = start;
@@ -124,7 +124,7 @@ bool strict_lock_default(files_struct *fsp, struct lock_struct *plock)
 				return True;
 			}
 			ret = brl_locktest(br_lck,
-					plock->context.smbpid,
+					plock->context.smblctx,
 					plock->context.pid,
 					plock->start,
 					plock->size,
@@ -139,7 +139,7 @@ bool strict_lock_default(files_struct *fsp, struct lock_struct *plock)
 			return True;
 		}
 		ret = brl_locktest(br_lck,
-				plock->context.smbpid,
+				plock->context.smblctx,
 				plock->context.pid,
 				plock->start,
 				plock->size,
@@ -166,7 +166,7 @@ void strict_unlock_default(files_struct *fsp, struct lock_struct *plock)
 ****************************************************************************/
 
 NTSTATUS query_lock(files_struct *fsp,
-			uint32 *psmbpid,
+			uint64_t *psmblctx,
 			uint64_t *pcount,
 			uint64_t *poffset,
 			enum brl_type *plock_type,
@@ -188,7 +188,7 @@ NTSTATUS query_lock(files_struct *fsp,
 	}
 
 	return brl_lockquery(br_lck,
-			psmbpid,
+			psmblctx,
 			procid_self(),
 			poffset,
 			pcount,
@@ -230,14 +230,14 @@ static void decrement_current_lock_count(files_struct *fsp,
 
 struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
 			files_struct *fsp,
-			uint32 lock_pid,
+			uint64_t smblctx,
 			uint64_t count,
 			uint64_t offset,
 			enum brl_type lock_type,
 			enum brl_flavour lock_flav,
 			bool blocking_lock,
 			NTSTATUS *perr,
-			uint32 *plock_pid,
+			uint64_t *psmblctx,
 			struct blocking_lock_record *blr)
 {
 	struct byte_range_lock *br_lck = NULL;
@@ -274,14 +274,14 @@ struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
 
 	*perr = brl_lock(msg_ctx,
 			br_lck,
-			lock_pid,
+			smblctx,
 			procid_self(),
 			offset,
-			count, 
+			count,
 			lock_type,
 			lock_flav,
 			blocking_lock,
-			plock_pid,
+			psmblctx,
 			blr);
 
 	DEBUG(10, ("do_lock: returning status=%s\n", nt_errstr(*perr)));
@@ -296,7 +296,7 @@ struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
 
 NTSTATUS do_unlock(struct messaging_context *msg_ctx,
 			files_struct *fsp,
-			uint32 lock_pid,
+			uint64_t smblctx,
 			uint64_t count,
 			uint64_t offset,
 			enum brl_flavour lock_flav)
@@ -323,7 +323,7 @@ NTSTATUS do_unlock(struct messaging_context *msg_ctx,
 
 	ok = brl_unlock(msg_ctx,
 			br_lck,
-			lock_pid,
+			smblctx,
 			procid_self(),
 			offset,
 			count,
@@ -345,7 +345,7 @@ NTSTATUS do_unlock(struct messaging_context *msg_ctx,
 ****************************************************************************/
 
 NTSTATUS do_lock_cancel(files_struct *fsp,
-			uint32 lock_pid,
+			uint64 smblctx,
 			uint64_t count,
 			uint64_t offset,
 			enum brl_flavour lock_flav,
@@ -373,7 +373,7 @@ NTSTATUS do_lock_cancel(files_struct *fsp,
 	}
 
 	ok = brl_lock_cancel(br_lck,
-			lock_pid,
+			smblctx,
 			procid_self(),
 			offset,
 			count,
diff --git a/source3/smbd/aio.c b/source3/smbd/aio.c
index b775977a72..0bc83dddd3 100644
--- a/source3/smbd/aio.c
+++ b/source3/smbd/aio.c
@@ -206,7 +206,7 @@ NTSTATUS schedule_aio_read_and_X(connection_struct *conn,
 	srv_set_message(aio_ex->outbuf, 12, 0, True);
 	SCVAL(aio_ex->outbuf,smb_vwv0,0xFF); /* Never a chained reply. */
 
-	init_strict_lock_struct(fsp, (uint32)req->smbpid,
+	init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 		(uint64_t)startpos, (uint64_t)smb_maxcnt, READ_LOCK,
 		&aio_ex->lock);
 
@@ -315,7 +315,7 @@ NTSTATUS schedule_aio_write_and_X(connection_struct *conn,
 	srv_set_message(aio_ex->outbuf, 6, 0, True);
 	SCVAL(aio_ex->outbuf,smb_vwv0,0xFF); /* Never a chained reply. */
 
-	init_strict_lock_struct(fsp, (uint32)req->smbpid,
+	init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 		(uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 		&aio_ex->lock);
 
diff --git a/source3/smbd/blocking.c b/source3/smbd/blocking.c
index 942237b812..da14ce89c9 100644
--- a/source3/smbd/blocking.c
+++ b/source3/smbd/blocking.c
@@ -90,11 +90,11 @@ static bool recalc_brl_timeout(void)
 	for (blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = blr->next) {
 		if (timeval_is_zero(&blr->expire_time)) {
 			/*
-			 * If we're blocked on pid 0xFFFFFFFF this is
+			 * If we're blocked on pid 0xFFFFFFFFFFFFFFFFLL this is
 			 * a POSIX lock, so calculate a timeout of
 			 * 10 seconds into the future.
 			 */
-                        if (blr->blocking_pid == 0xFFFFFFFF) {
+                        if (blr->blocking_smblctx == 0xFFFFFFFFFFFFFFFFLL) {
 				struct timeval psx_to = timeval_current_ofs(10, 0);
 				next_timeout = timeval_brl_min(&next_timeout, &psx_to);
                         }
@@ -157,12 +157,12 @@ bool push_blocking_lock_request( struct byte_range_lock *br_lck,
 		files_struct *fsp,
 		int lock_timeout,
 		int lock_num,
-		uint32_t lock_pid,
+		uint64_t smblctx,
 		enum brl_type lock_type,
 		enum brl_flavour lock_flav,
 		uint64_t offset,
 		uint64_t count,
-		uint32_t blocking_pid)
+		uint64_t blocking_smblctx)
 {
 	struct smbd_server_connection *sconn = smbd_server_conn;
 	struct blocking_lock_record *blr;
@@ -174,12 +174,12 @@ bool push_blocking_lock_request( struct byte_range_lock *br_lck,
 				fsp,
 				lock_timeout,
 				lock_num,
-				lock_pid,
+				smblctx,
 				lock_type,
 				lock_flav,
 				offset,
 				count,
-				blocking_pid);
+				blocking_smblctx);
 	}
 
 	if(req_is_in_chain(req)) {
@@ -210,8 +210,8 @@ bool push_blocking_lock_request( struct byte_range_lock *br_lck,
 					(lock_timeout % 1000) * 1000);
 	}
 	blr->lock_num = lock_num;
-	blr->lock_pid = lock_pid;
-	blr->blocking_pid = blocking_pid;
+	blr->smblctx = smblctx;
+	blr->blocking_smblctx = blocking_smblctx;
 	blr->lock_flav = lock_flav;
 	blr->lock_type = lock_type;
 	blr->offset = offset;
@@ -223,7 +223,7 @@ bool push_blocking_lock_request( struct byte_range_lock *br_lck,
 	/* Add a pending lock record for this. */
 	status = brl_lock(smbd_messaging_context(),
 			br_lck,
-			lock_pid,
+			smblctx,
 			procid_self(),
 			offset,
 			count,
@@ -298,7 +298,7 @@ static void generic_blocking_lock_error(struct blocking_lock_record *blr, NTSTAT
 		files_struct *fsp = blr->fsp;
 
 		if (fsp) {
-			fsp->last_lock_failure.context.smbpid = blr->lock_pid;
+			fsp->last_lock_failure.context.smblctx = blr->smblctx;
 			fsp->last_lock_failure.context.tid = fsp->conn->cnum;
 			fsp->last_lock_failure.context.pid = procid_self();
 			fsp->last_lock_failure.start = blr->offset;
@@ -328,7 +328,7 @@ static void reply_lockingX_error(struct blocking_lock_record *blr, NTSTATUS stat
 	files_struct *fsp = blr->fsp;
 	uint16 num_ulocks = SVAL(blr->req->vwv+6, 0);
 	uint64_t count = (uint64_t)0, offset = (uint64_t) 0;
-	uint32 lock_pid;
+	uint64_t smblctx;
 	unsigned char locktype = CVAL(blr->req->vwv+3, 0);
 	bool large_file_format = (locktype & LOCKING_ANDX_LARGE_FILES);
 	uint8_t *data;
@@ -351,7 +351,7 @@ static void reply_lockingX_error(struct blocking_lock_record *blr, NTSTATUS stat
 	for(i = blr->lock_num - 1; i >= 0; i--) {
 		bool err;
 
-		lock_pid = get_lock_pid( data, i, large_file_format);
+		smblctx = get_lock_pid( data, i, large_file_format);
 		count = get_lock_count( data, i, large_file_format);
 		offset = get_lock_offset( data, i, large_file_format, &err);
 
@@ -362,7 +362,7 @@ static void reply_lockingX_error(struct blocking_lock_record *blr, NTSTATUS stat
 
 		do_unlock(smbd_messaging_context(),
 			fsp,
-			lock_pid,
+			smblctx,
 			count,
 			offset,
 			WINDOWS_LOCK);
@@ -421,7 +421,7 @@ static bool process_lockingX(struct blocking_lock_record *blr)
 	uint16 num_ulocks = SVAL(blr->req->vwv+6, 0);
 	uint16 num_locks = SVAL(blr->req->vwv+7, 0);
 	uint64_t count = (uint64_t)0, offset = (uint64_t)0;
-	uint32 lock_pid;
+	uint64_t smblctx;
 	bool large_file_format = (locktype & LOCKING_ANDX_LARGE_FILES);
 	uint8_t *data;
 	NTSTATUS status = NT_STATUS_OK;
@@ -438,7 +438,7 @@ static bool process_lockingX(struct blocking_lock_record *blr)
 		struct byte_range_lock *br_lck = NULL;
 		bool err;
 
-		lock_pid = get_lock_pid( data, blr->lock_num, large_file_format);
+		smblctx = get_lock_pid( data, blr->lock_num, large_file_format);
 		count = get_lock_count( data, blr->lock_num, large_file_format);
 		offset = get_lock_offset( data, blr->lock_num, large_file_format, &err);
 
@@ -449,15 +449,15 @@ static bool process_lockingX(struct blocking_lock_record *blr)
 		errno = 0;
 		br_lck = do_lock(smbd_messaging_context(),
 				fsp,
-				lock_pid,
+				smblctx,
 				count,
-				offset, 
+				offset,
 				((locktype & LOCKING_ANDX_SHARED_LOCK) ?
 					READ_LOCK : WRITE_LOCK),
 				WINDOWS_LOCK,
 				True,
 				&status,
-				&blr->blocking_pid,
+				&blr->blocking_smblctx,
 				blr);
 
 		TALLOC_FREE(br_lck);
@@ -513,14 +513,14 @@ static bool process_trans2(struct blocking_lock_record *blr)
 	NTSTATUS status;
 	struct byte_range_lock *br_lck = do_lock(smbd_messaging_context(),
 						blr->fsp,
-						blr->lock_pid,
+						blr->smblctx,
 						blr->count,
 						blr->offset,
 						blr->lock_type,
 						blr->lock_flav,
 						True,
 						&status,
-						&blr->blocking_pid,
+						&blr->blocking_smblctx,
 						blr);
 	TALLOC_FREE(br_lck);
 
@@ -602,7 +602,7 @@ void cancel_pending_lock_requests_by_fid(files_struct *fsp,
 			   blr->req->cmd, fsp_str_dbg(fsp), fsp->fnum));
 
 		blr_cancelled = blocking_lock_cancel_smb1(fsp,
-				     blr->lock_pid,
+				     blr->smblctx,
 				     blr->offset,
 				     blr->count,
 				     blr->lock_flav,
@@ -612,7 +612,7 @@ void cancel_pending_lock_requests_by_fid(files_struct *fsp,
 		SMB_ASSERT(blr_cancelled == blr);
 
 		brl_lock_cancel(br_lck,
-				blr->lock_pid,
+				blr->smblctx,
 				procid_self(),
 				blr->offset,
 				blr->count,
@@ -655,7 +655,7 @@ void remove_pending_lock_requests_by_mid_smb1(uint64_t mid)
 				   fsp->fnum ));
 
 			brl_lock_cancel(br_lck,
-					blr->lock_pid,
+					blr->smblctx,
 					procid_self(),
 					blr->offset,
 					blr->count,
@@ -751,7 +751,7 @@ void process_blocking_lock_queue(void)
 
 			if (br_lck) {
 				brl_lock_cancel(br_lck,
-					blr->lock_pid,
+					blr->smblctx,
 					procid_self(),
 					blr->offset,
 					blr->count,
@@ -788,7 +788,7 @@ void process_blocking_lock_queue(void)
 					 fsp_str_dbg(blr->fsp)));
 
 				brl_lock_cancel(br_lck,
-					blr->lock_pid,
+					blr->smblctx,
 					procid_self(),
 					blr->offset,
 					blr->count,
@@ -851,7 +851,7 @@ static void process_blocking_lock_cancel_message(struct messaging_context *ctx,
 *****************************************************************************/
 
 struct blocking_lock_record *blocking_lock_cancel_smb1(files_struct *fsp,
-			uint32 lock_pid,
+			uint64_t smblctx,
 			uint64_t offset,
 			uint64_t count,
 			enum brl_flavour lock_flav,
@@ -873,7 +873,7 @@ struct blocking_lock_record *blocking_lock_cancel_smb1(files_struct *fsp,
 
 	for (blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = blr->next) {
 		if (fsp == blr->fsp &&
-				lock_pid == blr->lock_pid &&
+				smblctx == blr->smblctx &&
 				offset == blr->offset &&
 				count == blr->count &&
 				lock_flav == blr->lock_flav) {
diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h
index 6543ee6f24..b6aa704f18 100644
--- a/source3/smbd/globals.h
+++ b/source3/smbd/globals.h
@@ -312,12 +312,12 @@ bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 				files_struct *fsp,
 				int lock_timeout,
 				int lock_num,
-				uint32_t lock_pid,
+				uint64_t smblctx,
 				enum brl_type lock_type,
 				enum brl_flavour lock_flav,
 				uint64_t offset,
 				uint64_t count,
-				uint32_t blocking_pid);
+				uint64_t blocking_smblctx);
 void process_blocking_lock_queue_smb2(struct timeval tv_curr);
 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 			struct byte_range_lock *br_lck,
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 571b8a8ab0..f02fc9a152 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -3146,7 +3146,7 @@ void reply_readbraw(struct smb_request *req)
 	/* ensure we don't overrun the packet size */
 	maxcount = MIN(65535,maxcount);
 
-	init_strict_lock_struct(fsp, (uint32)req->smbpid,
+	init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 	    (uint64_t)startpos, (uint64_t)maxcount, READ_LOCK,
 	    &lock);
 
@@ -3248,7 +3248,7 @@ void reply_lockread(struct smb_request *req)
 
 	br_lck = do_lock(smbd_messaging_context(),
 			fsp,
-			req->smbpid,
+			(uint64_t)req->smbpid,
 			(uint64_t)numtoread,
 			(uint64_t)startpos,
 			WRITE_LOCK,
@@ -3359,7 +3359,7 @@ Returning short read of maximum allowed for compatibility with Windows 2000.\n",
 
 	data = smb_buf(req->outbuf) + 3;
 
-	init_strict_lock_struct(fsp, (uint32)req->smbpid,
+	init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 	    (uint64_t)startpos, (uint64_t)numtoread, READ_LOCK,
 	    &lock);
 
@@ -3441,7 +3441,7 @@ static void send_file_readX(connection_struct *conn, struct smb_request *req,
 		return;
 	}
 
-	init_strict_lock_struct(fsp, (uint32)req->smbpid,
+	init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 	    (uint64_t)startpos, (uint64_t)smb_maxcnt, READ_LOCK,
 	    &lock);
 
@@ -3833,7 +3833,7 @@ void reply_writebraw(struct smb_request *req)
 	}
 
 	if (!fsp->print_file) {
-		init_strict_lock_struct(fsp, (uint32)req->smbpid,
+		init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)tcount, WRITE_LOCK,
 		    &lock);
 
@@ -4035,7 +4035,7 @@ void reply_writeunlock(struct smb_request *req)
 	data = (const char *)req->buf + 3;
 
 	if (!fsp->print_file && numtowrite > 0) {
-		init_strict_lock_struct(fsp, (uint32)req->smbpid,
+		init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 		    &lock);
 
@@ -4077,7 +4077,7 @@ void reply_writeunlock(struct smb_request *req)
 	if (numtowrite && !fsp->print_file) {
 		status = do_unlock(smbd_messaging_context(),
 				fsp,
-				req->smbpid,
+				(uint64_t)req->smbpid,
 				(uint64_t)numtowrite, 
 				(uint64_t)startpos,
 				WINDOWS_LOCK);
@@ -4156,7 +4156,7 @@ void reply_write(struct smb_request *req)
 	data = (const char *)req->buf + 3;
 
 	if (!fsp->print_file) {
-		init_strict_lock_struct(fsp, (uint32)req->smbpid,
+		init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 			(uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 			&lock);
 
@@ -4456,7 +4456,7 @@ void reply_write_and_X(struct smb_request *req)
 			/* NT_STATUS_RETRY - fall through to sync write. */
 		}
 
-		init_strict_lock_struct(fsp, (uint32)req->smbpid,
+		init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 		    &lock);
 
@@ -4774,7 +4774,7 @@ void reply_writeclose(struct smb_request *req)
 	data = (const char *)req->buf + 1;
 
 	if (!fsp->print_file) {
-		init_strict_lock_struct(fsp, (uint32)req->smbpid,
+		init_strict_lock_struct(fsp, (uint64_t)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 		    &lock);
 
@@ -4865,7 +4865,7 @@ void reply_lock(struct smb_request *req)
 
 	br_lck = do_lock(smbd_messaging_context(),
 			fsp,
-			req->smbpid,
+			(uint64_t)req->smbpid,
 			count,
 			offset,
 			WRITE_LOCK,
@@ -4920,7 +4920,7 @@ void reply_unlock(struct smb_request *req)
 
 	status = do_unlock(smbd_messaging_context(),
 			fsp,
-			req->smbpid,
+			(uint64_t)req->smbpid,
 			count,
 			offset,
 			WINDOWS_LOCK);
@@ -6933,13 +6933,13 @@ void reply_copy(struct smb_request *req)
  Get a lock pid, dealing with large count requests.
 ****************************************************************************/
 
-uint32 get_lock_pid(const uint8_t *data, int data_offset,
+uint64_t get_lock_pid(const uint8_t *data, int data_offset,
 		    bool large_file_format)
 {
 	if(!large_file_format)
-		return (uint32)SVAL(data,SMB_LPID_OFFSET(data_offset));
+		return (uint64_t)SVAL(data,SMB_LPID_OFFSET(data_offset));
 	else
-		return (uint32)SVAL(data,SMB_LARGE_LPID_OFFSET(data_offset));
+		return (uint64_t)SVAL(data,SMB_LARGE_LPID_OFFSET(data_offset));
 }
 
 /****************************************************************************
@@ -7090,7 +7090,7 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 			  "pid %u, file %s\n",
 			  (double)e->offset,
 			  (double)e->count,
-			  (unsigned int)e->smbpid,
+			  (unsigned int)e->smblctx,
 			  fsp_str_dbg(fsp)));
 
 		if (e->brltype != UNLOCK_LOCK) {
@@ -7100,7 +7100,7 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 
 		status = do_unlock(smbd_messaging_context(),
 				fsp,
-				e->smbpid,
+				e->smblctx,
 				e->count,
 				e->offset,
 				WINDOWS_LOCK);
@@ -7125,11 +7125,11 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 	for(i = 0; i < (int)num_locks; i++) {
 		struct smbd_lock_element *e = &locks[i];
 
-		DEBUG(10,("smbd_do_locking: lock start=%.0f, len=%.0f for pid "
-			  "%u, file %s timeout = %d\n",
+		DEBUG(10,("smbd_do_locking: lock start=%.0f, len=%.0f for smblctx "
+			  "%llu, file %s timeout = %d\n",
 			  (double)e->offset,
 			  (double)e->count,
-			  (unsigned int)e->smbpid,
+			  (unsigned long long)e->smblctx,
 			  fsp_str_dbg(fsp),
 			  (int)timeout));
 
@@ -7167,7 +7167,7 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 				   return the right error. */
 
 				blr = blocking_lock_cancel_smb1(fsp,
-						e->smbpid,
+						e->smblctx,
 						e->offset,
 						e->count,
 						WINDOWS_LOCK,
@@ -7181,7 +7181,7 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 			}
 			/* Remove a matching pending lock. */
 			status = do_lock_cancel(fsp,
-						e->smbpid,
+						e->smblctx,
 						e->count,
 						e->offset,
 						WINDOWS_LOCK,
@@ -7190,18 +7190,18 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 			bool blocking_lock = timeout ? true : false;
 			bool defer_lock = false;
 			struct byte_range_lock *br_lck;
-			uint32_t block_smbpid;
+			uint64_t block_smblctx;
 
 			br_lck = do_lock(smbd_messaging_context(),
 					fsp,
-					e->smbpid,
+					e->smblctx,
 					e->count,
 					e->offset, 
 					e->brltype,
 					WINDOWS_LOCK,
 					blocking_lock,
 					&status,
-					&block_smbpid,
+					&block_smblctx,
 					NULL);
 
 			if (br_lck && blocking_lock && ERROR_WAS_LOCK_DENIED(status)) {
@@ -7244,12 +7244,12 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 							fsp,
 							timeout,
 							i,
-							e->smbpid,
+							e->smblctx,
 							e->brltype,
 							WINDOWS_LOCK,
 							e->offset,
 							e->count,
-							block_smbpid)) {
+							block_smblctx)) {
 					TALLOC_FREE(br_lck);
 					*async = true;
 					return NT_STATUS_OK;
@@ -7283,7 +7283,7 @@ NTSTATUS smbd_do_locking(struct smb_request *req,
 
 			do_unlock(smbd_messaging_context(),
 				fsp,
-				e->smbpid,
+				e->smblctx,
 				e->count,
 				e->offset,
 				WINDOWS_LOCK);
@@ -7448,7 +7448,7 @@ void reply_lockingX(struct smb_request *req)
 	/* Data now points at the beginning of the list
 	   of smb_unlkrng structs */
 	for(i = 0; i < (int)num_ulocks; i++) {
-		ulocks[i].smbpid = get_lock_pid(data, i, large_file_format);
+		ulocks[i].smblctx = get_lock_pid(data, i, large_file_format);
 		ulocks[i].count = get_lock_count(data, i, large_file_format);
 		ulocks[i].offset = get_lock_offset(data, i, large_file_format, &err);
 		ulocks[i].brltype = UNLOCK_LOCK;
@@ -7470,7 +7470,7 @@ void reply_lockingX(struct smb_request *req)
 	   of smb_lkrng structs */
 
 	for(i = 0; i < (int)num_locks; i++) {
-		locks[i].smbpid = get_lock_pid(data, i, large_file_format);
+		locks[i].smblctx = get_lock_pid(data, i, large_file_format);
 		locks[i].count = get_lock_count(data, i, large_file_format);
 		locks[i].offset = get_lock_offset(data, i, large_file_format, &err);
 
diff --git a/source3/smbd/smb2_lock.c b/source3/smbd/smb2_lock.c
index 9c8964abb8..8ea36be8ed 100644
--- a/source3/smbd/smb2_lock.c
+++ b/source3/smbd/smb2_lock.c
@@ -341,7 +341,7 @@ static struct tevent_req *smbd_smb2_lock_send(TALLOC_CTX *mem_ctx,
 			return tevent_req_post(req, ev);
 		}
 
-		locks[i].smbpid = in_smbpid;
+		locks[i].smblctx = in_smbpid;
 		locks[i].offset = in_locks[i].offset;
 		locks[i].count  = in_locks[i].length;
 
@@ -362,11 +362,11 @@ static struct tevent_req *smbd_smb2_lock_send(TALLOC_CTX *mem_ctx,
 		}
 
 		DEBUG(10,("smbd_smb2_lock_send: index %d offset=%llu, count=%llu, "
-			"pid = %u type %d\n",
+			"smblctx = %llu type %d\n",
 			i,
 			(unsigned long long)locks[i].offset,
 			(unsigned long long)locks[i].count,
-			(unsigned int)locks[i].smbpid,
+			(unsigned long long)locks[i].smblctx,
 			(int)locks[i].brltype ));
 
 	}
@@ -510,11 +510,11 @@ static bool recalc_smb2_brl_timeout(struct smbd_server_connection *sconn)
 		}
 		if (timeval_is_zero(&blr->expire_time)) {
 			/*
-			 * If we're blocked on pid 0xFFFFFFFF this is
+			 * If we're blocked on pid 0xFFFFFFFFFFFFFFFFLL this is
 			 * a POSIX lock, so calculate a timeout of
 			 * 10 seconds into the future.
 			 */
-			if (blr->blocking_pid == 0xFFFFFFFF) {
+			if (blr->blocking_smblctx == 0xFFFFFFFFFFFFFFFFLL) {
 				struct timeval psx_to = timeval_current_ofs(10, 0);
 				next_timeout = timeval_brl_min(&next_timeout, &psx_to);
 			}
@@ -582,12 +582,12 @@ bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 				files_struct *fsp,
 				int lock_timeout,
 				int lock_num,
-				uint32_t lock_pid,
+				uint64_t smblctx,
 				enum brl_type lock_type,
 				enum brl_flavour lock_flav,
 				uint64_t offset,
 				uint64_t count,
-				uint32_t blocking_pid)
+				uint64_t blocking_smblctx)
 {
 	struct smbd_server_connection *sconn = smbd_server_conn;
 	struct smbd_smb2_request *smb2req = smb1req->smb2req;
@@ -627,8 +627,8 @@ bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 	}
 
 	blr->lock_num = lock_num;
-	blr->lock_pid = lock_pid;
-	blr->blocking_pid = blocking_pid;
+	blr->smblctx = smblctx;
+	blr->blocking_smblctx = blocking_smblctx;
 	blr->lock_flav = lock_flav;
 	blr->lock_type = lock_type;
 	blr->offset = offset;
@@ -640,7 +640,7 @@ bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 	/* Add a pending lock record for this. */
 	status = brl_lock(smbd_messaging_context(),
 			br_lck,
-			lock_pid,
+			smblctx,
 			procid_self(),
 			offset,
 			count,
@@ -690,7 +690,7 @@ static void remove_pending_lock(TALLOC_CTX *mem_ctx, struct blocking_lock_record
 
 	if (br_lck) {
 		brl_lock_cancel(br_lck,
-				blr->lock_pid,
+				blr->smblctx,
 				procid_self(),
 				blr->offset,
 				blr->count,
@@ -732,14 +732,14 @@ static void reprocess_blocked_smb2_lock(struct smbd_smb2_request *smb2req,
 
 		br_lck = do_lock(smbd_messaging_context(),
 				fsp,
-				e->smbpid,
+				e->smblctx,
 				e->count,
 				e->offset,
 				e->brltype,
 				WINDOWS_LOCK,
 				true,
 				&status,
-				&blr->blocking_pid,
+				&blr->blocking_smblctx,
 				blr);
 
 		TALLOC_FREE(br_lck);
@@ -897,7 +897,7 @@ void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 
 		/* Remove the entries from the lock db. */
 		brl_lock_cancel(br_lck,
-				blr->lock_pid,
+				blr->smblctx,
 				procid_self(),
 				blr->offset,
 				blr->count,
diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 9c2e3296e5..25ca3fd3ae 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -4877,7 +4877,7 @@ NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 		{
 			uint64_t count;
 			uint64_t offset;
-			uint32 lock_pid;
+			uint64_t smblctx;
 			enum brl_type lock_type;
 
 			/* We need an open file with a real fd for this. */
@@ -4902,7 +4902,7 @@ NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 					return NT_STATUS_INVALID_PARAMETER;
 			}
 
-			lock_pid = IVAL(pdata, POSIX_LOCK_PID_OFFSET);
+			smblctx = (uint64_t)IVAL(pdata, POSIX_LOCK_PID_OFFSET);
 #if defined(HAVE_LONGLONG)
 			offset = (((uint64_t) IVAL(pdata,(POSIX_LOCK_START_OFFSET+4))) << 32) |
 					((uint64_t) IVAL(pdata,POSIX_LOCK_START_OFFSET));
@@ -4914,7 +4914,7 @@ NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 #endif /* HAVE_LONGLONG */
 
 			status = query_lock(fsp,
-					&lock_pid,
+					&smblctx,
 					&count,
 					&offset,
 					&lock_type,
@@ -4926,7 +4926,7 @@ NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 
 				SSVAL(pdata, POSIX_LOCK_TYPE_OFFSET, lock_type);
 				SSVAL(pdata, POSIX_LOCK_FLAGS_OFFSET, 0);
-				SIVAL(pdata, POSIX_LOCK_PID_OFFSET, lock_pid);
+				SIVAL(pdata, POSIX_LOCK_PID_OFFSET, (uint32_t)smblctx);
 #if defined(HAVE_LONGLONG)
 				SIVAL(pdata, POSIX_LOCK_START_OFFSET, (uint32)(offset & 0xFFFFFFFF));
 				SIVAL(pdata, POSIX_LOCK_START_OFFSET + 4, (uint32)((offset >> 32) & 0xFFFFFFFF));
@@ -6235,7 +6235,7 @@ static NTSTATUS smb_set_posix_lock(connection_struct *conn,
 {
 	uint64_t count;
 	uint64_t offset;
-	uint32 lock_pid;
+	uint64_t smblctx;
 	bool blocking_lock = False;
 	enum brl_type lock_type;
 
@@ -6279,7 +6279,7 @@ static NTSTATUS smb_set_posix_lock(connection_struct *conn,
 		blocking_lock = False;
 	}
 
-	lock_pid = IVAL(pdata, POSIX_LOCK_PID_OFFSET);
+	smblctx = (uint64_t)IVAL(pdata, POSIX_LOCK_PID_OFFSET);
 #if defined(HAVE_LONGLONG)
 	offset = (((uint64_t) IVAL(pdata,(POSIX_LOCK_START_OFFSET+4))) << 32) |
 			((uint64_t) IVAL(pdata,POSIX_LOCK_START_OFFSET));
@@ -6291,33 +6291,33 @@ static NTSTATUS smb_set_posix_lock(connection_struct *conn,
 #endif /* HAVE_LONGLONG */
 
 	DEBUG(10,("smb_set_posix_lock: file %s, lock_type = %u,"
-			"lock_pid = %u, count = %.0f, offset = %.0f\n",
+			"smblctx = %llu, count = %.0f, offset = %.0f\n",
 		fsp_str_dbg(fsp),
 		(unsigned int)lock_type,
-		(unsigned int)lock_pid,
+		(unsigned long long)smblctx,
 		(double)count,
 		(double)offset ));
 
 	if (lock_type == UNLOCK_LOCK) {
 		status = do_unlock(smbd_messaging_context(),
 				fsp,
-				lock_pid,
+				smblctx,
 				count,
 				offset,
 				POSIX_LOCK);
 	} else {
-		uint32 block_smbpid;
+		uint64_t block_smblctx;
 
 		struct byte_range_lock *br_lck = do_lock(smbd_messaging_context(),
 							fsp,
-							lock_pid,
+							smblctx,
 							count,
 							offset,
 							lock_type,
 							POSIX_LOCK,
 							blocking_lock,
 							&status,
-							&block_smbpid,
+							&block_smblctx,
 							NULL);
 
 		if (br_lck && blocking_lock && ERROR_WAS_LOCK_DENIED(status)) {
@@ -6331,12 +6331,12 @@ static NTSTATUS smb_set_posix_lock(connection_struct *conn,
 						fsp,
 						-1, /* infinite timeout. */
 						0,
-						lock_pid,
+						smblctx,
 						lock_type,
 						POSIX_LOCK,
 						offset,
 						count,
-						block_smbpid)) {
+						block_smblctx)) {
 				TALLOC_FREE(br_lck);
 				return status;
 			}