From 7f60959e64c4281e02fd11fbcce2d15f43da1892 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Tue, 26 Oct 2004 08:35:29 +0000
Subject: r3253: - added rudimentary support for ntioctl in pvfs

- catch the SIGXFSZ signal, which for some completely insane reason is
  generated in current Linux systems when you write before the maximum
  offset in a file (maximum is 2^41 on my box). Why wasn't errno good
  enough for this?

- give the right ntstatus code for large offset write failures
(This used to be commit 367f0c2af409e4292f727e8a865762a008fd7e67)
---
 source4/ntvfs/posix/config.mk    |  1 +
 source4/ntvfs/posix/pvfs_ioctl.c | 87 ++++++++++++++++++++++++++++++++++++++++
 source4/ntvfs/posix/pvfs_write.c |  3 ++
 source4/ntvfs/posix/vfs_posix.c  | 15 +++----
 4 files changed, 97 insertions(+), 9 deletions(-)
 create mode 100644 source4/ntvfs/posix/pvfs_ioctl.c

(limited to 'source4/ntvfs')

diff --git a/source4/ntvfs/posix/config.mk b/source4/ntvfs/posix/config.mk
index 8d28bd5a44..4918ee61eb 100644
--- a/source4/ntvfs/posix/config.mk
+++ b/source4/ntvfs/posix/config.mk
@@ -23,6 +23,7 @@ ADD_OBJ_FILES = \
 		ntvfs/posix/pvfs_lock.o \
 		ntvfs/posix/pvfs_wait.o \
 		ntvfs/posix/pvfs_seek.o \
+		ntvfs/posix/pvfs_ioctl.o \
 		ntvfs/common/opendb.o \
 		ntvfs/common/brlock.o
 # End MODULE ntvfs_posix
diff --git a/source4/ntvfs/posix/pvfs_ioctl.c b/source4/ntvfs/posix/pvfs_ioctl.c
new file mode 100644
index 0000000000..15b9d6c27a
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_ioctl.c
@@ -0,0 +1,87 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - open and close
+
+   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"
+
+/*
+  old ioctl interface 
+*/
+static NTSTATUS pvfs_ioctl_old(struct ntvfs_module_context *ntvfs,
+			struct smbsrv_request *req, union smb_ioctl *io)
+{
+	struct pvfs_state *pvfs = ntvfs->private_data;
+	struct pvfs_file *f;
+
+	f = pvfs_find_fd(pvfs, req, io->ioctl.in.fnum);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  nt ioctl interface 
+*/
+static NTSTATUS pvfs_ntioctl(struct ntvfs_module_context *ntvfs,
+			     struct smbsrv_request *req, union smb_ioctl *io)
+{
+	struct pvfs_state *pvfs = ntvfs->private_data;
+	struct pvfs_file *f;
+
+	f = pvfs_find_fd(pvfs, req, io->ntioctl.in.fnum);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	switch (io->ntioctl.in.function) {
+	case FSCTL_SET_SPARSE:
+		/* maybe some posix systems have a way of marking
+		   a file non-sparse? */
+		return NT_STATUS_OK;
+	}
+
+	return NT_STATUS_NOT_SUPPORTED;
+}
+
+/*
+  ioctl interface 
+*/
+NTSTATUS pvfs_ioctl(struct ntvfs_module_context *ntvfs,
+		    struct smbsrv_request *req, union smb_ioctl *io)
+{
+	NTSTATUS status;
+
+	switch (io->generic.level) {
+	case RAW_IOCTL_IOCTL:
+		status = pvfs_ioctl_old(ntvfs, req, io);
+		break;
+
+	case RAW_IOCTL_NTIOCTL:
+		status = pvfs_ntioctl(ntvfs, req, io);
+		break;
+	}
+
+	return status;
+}
+
diff --git a/source4/ntvfs/posix/pvfs_write.c b/source4/ntvfs/posix/pvfs_write.c
index 7ab1d340bd..235a21882a 100644
--- a/source4/ntvfs/posix/pvfs_write.c
+++ b/source4/ntvfs/posix/pvfs_write.c
@@ -65,6 +65,9 @@ NTSTATUS pvfs_write(struct ntvfs_module_context *ntvfs,
 		     wr->writex.in.count,
 		     wr->writex.in.offset);
 	if (ret == -1) {
+		if (errno == EFBIG) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
 		return map_nt_error_from_unix(errno);
 	}
 
diff --git a/source4/ntvfs/posix/vfs_posix.c b/source4/ntvfs/posix/vfs_posix.c
index cd41bf2329..b83e4c494e 100644
--- a/source4/ntvfs/posix/vfs_posix.c
+++ b/source4/ntvfs/posix/vfs_posix.c
@@ -122,6 +122,12 @@ static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
 
 	pvfs_setup_options(pvfs);
 
+#ifdef SIGXFSZ
+	/* who had the stupid idea to generate a signal on a large
+	   file write instead of just failing it!? */
+	BlockSignals(True, SIGXFSZ);
+#endif
+
 	return NT_STATUS_OK;
 }
 
@@ -134,15 +140,6 @@ static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs,
 	return NT_STATUS_OK;
 }
 
-/*
-  ioctl interface - we don't do any
-*/
-static NTSTATUS pvfs_ioctl(struct ntvfs_module_context *ntvfs,
-			   struct smbsrv_request *req, union smb_ioctl *io)
-{
-	return NT_STATUS_INVALID_PARAMETER;
-}
-
 /*
   check if a directory exists
 */
-- 
cgit