https://git.reactos.org/?p=reactos.git;a=commitdiff;h=26a31b160ab3db16bf92c…
commit 26a31b160ab3db16bf92cc786e9d5ecf080057fe
Author: Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Fri Sep 6 08:28:36 2019 +0200
Commit: Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Fri Sep 6 08:28:36 2019 +0200
[MOUNTMGR] Fix QueryPointsFromSymbolicLinkName and make it working
Select the current stack location for output buffer
And set output size so that buffer gets properly copied to caller
---
drivers/filters/mountmgr/point.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/filters/mountmgr/point.c b/drivers/filters/mountmgr/point.c
index d63ec3a4592..77fc6fba95f 100644
--- a/drivers/filters/mountmgr/point.c
+++ b/drivers/filters/mountmgr/point.c
@@ -518,7 +518,7 @@ QueryPointsFromSymbolicLinkName(IN PDEVICE_EXTENSION DeviceExtension,
}
/* Get output buffer */
- Stack = IoGetNextIrpStackLocation(Irp);
+ Stack = IoGetCurrentIrpStackLocation(Irp);
MountPoints = (PMOUNTMGR_MOUNT_POINTS)Irp->AssociatedIrp.SystemBuffer;
/* Compute output length */
@@ -528,9 +528,12 @@ QueryPointsFromSymbolicLinkName(IN PDEVICE_EXTENSION
DeviceExtension,
/* Give length to allow reallocation */
MountPoints->Size = sizeof(MOUNTMGR_MOUNT_POINTS) + TotalLength;
MountPoints->NumberOfMountPoints = 1;
+ Irp->IoStatus.Information = sizeof(MOUNTMGR_MOUNT_POINTS) + TotalLength;
if (MountPoints->Size >
Stack->Parameters.DeviceIoControl.OutputBufferLength)
{
+ Irp->IoStatus.Information = sizeof(MOUNTMGR_MOUNT_POINTS);
+
return STATUS_BUFFER_OVERFLOW;
}