r2941: added pvfs_flush() implementation to the posix backend

(This used to be commit dac00ef3b0d0f8467367d7b6ff77db7b63a042cc)

1 files changed, 64 insertions, 0 deletions

diff --git a/source4/ntvfs/posix/pvfs_flush.c b/source4/ntvfs/posix/pvfs_flush.c
new file mode 100644
index 0000000000..49eaa74cfb
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_flush.c
@@ -0,0 +1,64 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - flush
+
+   Copyright (C) Andrew Tridgell 2004
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "include/includes.h"
+#include "vfs_posix.h"
+
+/*
+  flush a single open file
+*/
+static void pvfs_flush_file(struct pvfs_state *pvfs, struct pvfs_file *f)
+{
+	if (pvfs->flags & PVFS_FLAG_STRICT_SYNC) {
+		fsync(f->fd);
+	}
+}
+
+/*
+  flush a fnum
+*/
+NTSTATUS pvfs_flush(struct ntvfs_module_context *ntvfs,
+		    struct smbsrv_request *req, struct smb_flush *io)
+{
+	struct pvfs_state *pvfs = ntvfs->private_data;
+	struct pvfs_file *f;
+
+	if (io->in.fnum != 0xFFFF) {
+		f = pvfs_find_fd(pvfs, req, io->in.fnum);
+		if (!f) {
+			return NT_STATUS_INVALID_HANDLE;
+		}
+		pvfs_flush_file(pvfs, f);
+		return NT_STATUS_OK;
+	}
+
+	if (!(pvfs->flags & PVFS_FLAG_STRICT_SYNC)) {
+		return NT_STATUS_OK;
+	}
+
+	/* they are asking to flush all open files */
+	for (f=pvfs->open_files;f;f=f->next) {
+		pvfs_flush_file(pvfs, f);
+	}
+
+	return NT_STATUS_OK;
+}