[PATCH] ntdll: Correctly fill DataTransferLength in SCSI_PASS_THROUGH and SCSI_PASS_THROUGH_DIRECT.
Zebediah Figura
zfigura at codeweavers.com
Mon Jul 1 19:03:14 CDT 2019
From: Zebediah Figura <z.figura12 at gmail.com>
DataTransferLength specifies the number of bytes transferred, but
sg_io_hdr_t.resid gives the number of bytes *not* transferred:
https://www.tldp.org/HOWTO/SCSI-Generic-HOWTO/x356.html
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=47424
Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
---
dlls/ntdll/cdrom.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/dlls/ntdll/cdrom.c b/dlls/ntdll/cdrom.c
index 4a3b84d4ad2..f6e3a86e34f 100644
--- a/dlls/ntdll/cdrom.c
+++ b/dlls/ntdll/cdrom.c
@@ -1658,7 +1658,7 @@ static NTSTATUS CDROM_ScsiPassThroughDirect(int fd, PSCSI_PASS_THROUGH_DIRECT pP
io = ioctl(fd, SG_IO, &cmd);
pPacket->ScsiStatus = cmd.status;
- pPacket->DataTransferLength = cmd.resid;
+ pPacket->DataTransferLength -= cmd.resid;
pPacket->SenseInfoLength = cmd.sb_len_wr;
ret = CDROM_GetStatusCode(io);
@@ -1842,7 +1842,7 @@ static NTSTATUS CDROM_ScsiPassThrough(int fd, PSCSI_PASS_THROUGH pPacket)
io = ioctl(fd, SG_IO, &cmd);
pPacket->ScsiStatus = cmd.status;
- pPacket->DataTransferLength = cmd.resid;
+ pPacket->DataTransferLength -= cmd.resid;
pPacket->SenseInfoLength = cmd.sb_len_wr;
ret = CDROM_GetStatusCode(io);
--
2.20.1
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