s3 OneFS: Add kernel oplocks implementation

A few functions in oplocks_onefs.c need to be accessed from the onefs
vfs module.  It would be ideal if oplocks were implemented at the vfs
layer, but since they aren't yet, a new header is added to
source3/include to make these functions available to the onefs vfs
module.  oplocks_onefs.o doesn't need to be linked into the onefs vfs
module explicitly, since it is already linked into smbd by default.

2 files changed, 54 insertions, 0 deletions

diff --git a/source3/include/oplock_onefs.h b/source3/include/oplock_onefs.h
new file mode 100644
index 0000000000..a20becdf2c
--- /dev/null
+++ b/source3/include/oplock_onefs.h
@@ -0,0 +1,50 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Support for OneFS kernel oplocks
+ *
+ * Copyright (C) Tim Prouty, 2009
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _OPLOCK_ONEFS_H
+#define _OPLOCK_ONEFS_H
+
+#if HAVE_ONEFS
+
+#include <sys/isi_oplock.h>
+
+struct deferred_open_record {
+	bool delayed_for_oplocks;
+	bool failed; /* added for onefs_oplocks */
+	struct file_id id;
+};
+
+/*
+ * OneFS oplock utility functions
+ */
+const char *onefs_oplock_str(enum oplock_type onefs_oplock_type);
+int onefs_oplock_to_samba_oplock(enum oplock_type onefs_oplock);
+enum oplock_type onefs_samba_oplock_to_oplock(int samba_oplock_type);
+
+/*
+ * OneFS oplock callback tracking
+ */
+void destroy_onefs_callback_record(uint64 id);
+uint64 onefs_oplock_wait_record(uint16 mid);
+void onefs_set_oplock_callback(uint64 id, files_struct *fsp);
+
+#endif /* HAVE_ONEFS */
+
+#endif /* _OPLOCK_ONEFS_H */
diff --git a/source3/include/proto.h b/source3/include/proto.h
index f553f7625e..1566a01dc5 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -6924,6 +6924,10 @@ int linux_set_lease_sighandler(int fd);
 int linux_setlease(int fd, int leasetype);
 struct kernel_oplocks *linux_init_kernel_oplocks(TALLOC_CTX *mem_ctx) ;
 
+/* The following definitions come from smbd/oplock_onefs.c  */
+
+struct kernel_oplocks *onefs_init_kernel_oplocks(TALLOC_CTX *mem_ctx);
+
 /* The following definitions come from smbd/password.c  */
 
 user_struct *get_valid_user_struct(uint16 vuid);