Fix for bug #7233 - print fails with jobs >4GB from Win7 clients.

Contains for by Sebastian Kloska <oncaphillis@snafu.de>. Submitter
confirms this fixes the problem.

Jeremy.

3 files changed, 33 insertions, 4 deletions

diff --git a/source3/include/proto.h b/source3/include/proto.h
index 2708c3aac9..2ebc75ce12 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -4919,6 +4919,7 @@ NTSTATUS print_fsp_open(struct smb_request *req, connection_struct *conn,
 			const char *fname,
 			uint16_t current_vuid, files_struct *fsp);
 void print_fsp_end(files_struct *fsp, enum file_close_type close_type);
+SMB_OFF_T printfile_offset(files_struct *fsp, SMB_OFF_T offset);
 
 /* The following definitions come from printing/printing.c  */
 
diff --git a/source3/printing/printfsp.c b/source3/printing/printfsp.c
index 756a314dd7..5382b734f3 100644
--- a/source3/printing/printfsp.c
+++ b/source3/printing/printfsp.c
@@ -114,3 +114,23 @@ void print_fsp_end(files_struct *fsp, enum file_close_type close_type)
 
 	print_job_end(SNUM(fsp->conn),jobid, close_type);
 }
+
+/****************************************************************************
+ Discovered by Sebastian Kloska <oncaphillis@snafu.de>. When print files
+ go beyond 4GB, the 32-bit offset sent in old SMBwrite calls is relative
+ to the current 4GB chunk we're writing to.
+****************************************************************************/
+
+SMB_OFF_T printfile_offset(files_struct *fsp, SMB_OFF_T offset)
+{
+	SMB_STRUCT_STAT st;
+
+	if (sys_fstat(fsp->fh->fd, &st, false) == -1) {
+		DEBUG(3,("printfile_offset: sys_fstat failed on %s (%s)\n",
+			fsp_str_dbg(fsp),
+			strerror(errno) ));
+		return offset;
+	}
+
+	return (st.st_ex_size & 0xffffffff00000000LL) + offset;
+}
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 1c99aec04f..fdcf4870e8 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -3822,7 +3822,9 @@ void reply_writebraw(struct smb_request *req)
 		return;
 	}
 
-	if (!fsp->print_file) {
+	if (fsp->print_file) {
+		startpos = printfile_offset(fsp, startpos);
+	} else {
 		init_strict_lock_struct(fsp, (uint32)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)tcount, WRITE_LOCK,
 		    &lock);
@@ -4024,7 +4026,9 @@ void reply_writeunlock(struct smb_request *req)
 	startpos = IVAL_TO_SMB_OFF_T(req->vwv+2, 0);
 	data = (const char *)req->buf + 3;
 
-	if (numtowrite && !fsp->print_file) {
+	if (fsp->print_file) {
+		startpos = printfile_offset(fsp, startpos);
+	} else if (numtowrite) {
 		init_strict_lock_struct(fsp, (uint32)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 		    &lock);
@@ -4145,7 +4149,9 @@ void reply_write(struct smb_request *req)
 	startpos = IVAL_TO_SMB_OFF_T(req->vwv+2, 0);
 	data = (const char *)req->buf + 3;
 
-	if (!fsp->print_file) {
+	if (fsp->print_file) {
+		startpos = printfile_offset(fsp, startpos);
+	} else {
 		init_strict_lock_struct(fsp, (uint32)req->smbpid,
 			(uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 			&lock);
@@ -4751,7 +4757,9 @@ void reply_writeclose(struct smb_request *req)
 	mtime = convert_time_t_to_timespec(srv_make_unix_date3(req->vwv+4));
 	data = (const char *)req->buf + 1;
 
-	if (numtowrite && !fsp->print_file) {
+	if (fsp->print_file) {
+		startpos = printfile_offset(fsp, startpos);
+	} else if (numtowrite) {
 		init_strict_lock_struct(fsp, (uint32)req->smbpid,
 		    (uint64_t)startpos, (uint64_t)numtowrite, WRITE_LOCK,
 		    &lock);