svn commit: r349007 - stable/12/usr.sbin/mpsutil

[Alexander Motin]

Author: mav
Date: Thu Jun 13 01:23:03 2019
New Revision: 349007
URL: https://svnweb.freebsd.org/changeset/base/349007

Log:
  MFC r348422: Pass data pointers to the driver in way in expects.
  
  Probably due to historical reasons the driver uses In/Out arguments in
  odd way.  While this tool still never uses Out arguments to see that,
  make the code to not trigger EINVAL in possible future uses.

Modified:
  stable/12/usr.sbin/mpsutil/mps_cmd.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/usr.sbin/mpsutil/mps_cmd.c
==============================================================================
--- stable/12/usr.sbin/mpsutil/mps_cmd.c	Thu Jun 13 01:21:32 2019	(r349006)
+++ stable/12/usr.sbin/mpsutil/mps_cmd.c	Thu Jun 13 01:23:03 2019	(r349007)
@@ -652,27 +652,32 @@ mps_pass_command(int fd, void *req, uint32_t req_len, 
 {
 	struct mprs_pass_thru pass;
 
+	bzero(&pass, sizeof(pass));
 	pass.PtrRequest = (uint64_t)(uintptr_t)req;
 	pass.PtrReply = (uint64_t)(uintptr_t)reply;
-	pass.PtrData = (uint64_t)(uintptr_t)data_in;
-	pass.PtrDataOut = (uint64_t)(uintptr_t)data_out;
 	pass.RequestSize = req_len;
 	pass.ReplySize = reply_len;
-	pass.DataSize = datain_len;
-	pass.DataOutSize = dataout_len;
 	if (datain_len && dataout_len) {
+		pass.PtrData = (uint64_t)(uintptr_t)data_in;
+		pass.PtrDataOut = (uint64_t)(uintptr_t)data_out;
+		pass.DataSize = datain_len;
+		pass.DataOutSize = dataout_len;
 		if (is_mps) {
 			pass.DataDirection = MPS_PASS_THRU_DIRECTION_BOTH;
 		} else {
 			pass.DataDirection = MPR_PASS_THRU_DIRECTION_BOTH;
 		}
 	} else if (datain_len) {
+		pass.PtrData = (uint64_t)(uintptr_t)data_in;
+		pass.DataSize = datain_len;
 		if (is_mps) {
 			pass.DataDirection = MPS_PASS_THRU_DIRECTION_READ;
 		} else {
 			pass.DataDirection = MPR_PASS_THRU_DIRECTION_READ;
 		}
 	} else if (dataout_len) {
+		pass.PtrData = (uint64_t)(uintptr_t)data_out;
+		pass.DataSize = dataout_len;
 		if (is_mps) {
 			pass.DataDirection = MPS_PASS_THRU_DIRECTION_WRITE;
 		} else {