Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 145 insertions, 0 deletions

diff --git a/source4/ntvfs/posix/pvfs_write.c b/source4/ntvfs/posix/pvfs_write.c
new file mode 100644
index 0000000..9773325
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_write.c
@@ -0,0 +1,145 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   POSIX NTVFS backend - write
+
+   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 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/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/security.h"
+#include "lib/events/events.h"
+
+static void pvfs_write_time_update_handler(struct tevent_context *ev,
+					   struct tevent_timer *te,
+					   struct timeval tv,
+					   void *private_data)
+{
+	struct pvfs_file_handle *h = talloc_get_type(private_data,
+				     struct pvfs_file_handle);
+	struct odb_lock *lck;
+	NTSTATUS status;
+	NTTIME write_time;
+
+	lck = odb_lock(h, h->pvfs->odb_context, &h->odb_locking_key);
+	if (lck == NULL) {
+		DEBUG(0,("Unable to lock opendb for write time update\n"));
+		return;
+	}
+
+	write_time = timeval_to_nttime(&tv);
+
+	status = odb_set_write_time(lck, write_time, false);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("Unable to update write time: %s\n",
+			nt_errstr(status)));
+		return;
+	}
+
+	talloc_free(lck);
+
+	h->write_time.update_event = NULL;
+}
+
+static void pvfs_trigger_write_time_update(struct pvfs_file_handle *h)
+{
+	struct pvfs_state *pvfs = h->pvfs;
+	struct timeval tv;
+
+	if (h->write_time.update_triggered) {
+		return;
+	}
+
+	tv = timeval_current_ofs_usec(pvfs->writetime_delay);
+
+	h->write_time.update_triggered = true;
+	h->write_time.update_on_close = true;
+	h->write_time.update_event = tevent_add_timer(pvfs->ntvfs->ctx->event_ctx,
+						     h, tv,
+						     pvfs_write_time_update_handler,
+						     h);
+	if (!h->write_time.update_event) {
+		DEBUG(0,("Failed tevent_add_timer\n"));
+	}
+}
+
+/*
+  write to a file
+*/
+NTSTATUS pvfs_write(struct ntvfs_module_context *ntvfs,
+		    struct ntvfs_request *req, union smb_write *wr)
+{
+	struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+				  struct pvfs_state);
+	ssize_t ret;
+	struct pvfs_file *f;
+	NTSTATUS status;
+
+	if (wr->generic.level != RAW_WRITE_WRITEX) {
+		return ntvfs_map_write(ntvfs, req, wr);
+	}
+
+	f = pvfs_find_fd(pvfs, req, wr->writex.in.file.ntvfs);
+	if (!f) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+
+	if (f->handle->fd == -1) {
+		return NT_STATUS_INVALID_DEVICE_REQUEST;
+	}
+
+	if (!(f->access_mask & (SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA))) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	status = pvfs_check_lock(pvfs, f, req->smbpid, 
+				 wr->writex.in.offset,
+				 wr->writex.in.count,
+				 WRITE_LOCK);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	status = pvfs_break_level2_oplocks(f);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	pvfs_trigger_write_time_update(f->handle);
+
+	if (f->handle->name->stream_name) {
+		ret = pvfs_stream_write(pvfs,
+					f->handle,
+					wr->writex.in.data, 
+					wr->writex.in.count,
+					wr->writex.in.offset);
+	} else {
+		ret = pwrite(f->handle->fd, 
+			     wr->writex.in.data, 
+			     wr->writex.in.count,
+			     wr->writex.in.offset);
+	}
+	if (ret == -1) {
+		if (errno == EFBIG) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		return pvfs_map_errno(pvfs, errno);
+	}
+
+	f->handle->seek_offset = wr->writex.in.offset + ret;
+	
+	wr->writex.out.nwritten = ret;
+	wr->writex.out.remaining = 0; /* should fill this in? */
+
+	return NT_STATUS_OK;
+}