OvmfPkg/VirtioFsDxe: add shared wrapper for FUSE_RELEASE / FUSE_RELEASEDIR

The FUSE_RELEASE and FUSE_RELEASEDIR commands only differ in the opcode.
Add a common function called VirtioFsFuseReleaseFileOrDir() for sending
either command.

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20201216211125.19496-11-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/OvmfPkg/Include/IndustryStandard/VirtioFs.h b/OvmfPkg/Include/IndustryStandard/VirtioFs.h
index c481053255..c17a43c160 100644
--- a/OvmfPkg/Include/IndustryStandard/VirtioFs.h
+++ b/OvmfPkg/Include/IndustryStandard/VirtioFs.h
@@ -80,8 +80,10 @@ typedef struct {
 // FUSE operation codes.

 //

 typedef enum {

+  VirtioFsFuseOpRelease     = 18,

   VirtioFsFuseOpInit        = 26,

   VirtioFsFuseOpOpenDir     = 27,

+  VirtioFsFuseOpReleaseDir  = 29,

 } VIRTIO_FS_FUSE_OPCODE;

 

 #pragma pack (1)

@@ -106,6 +108,16 @@ typedef struct {
 } VIRTIO_FS_FUSE_RESPONSE;

 

 //

+// Header for VirtioFsFuseOpRelease and VirtioFsFuseOpReleaseDir.

+//

+typedef struct {

+  UINT64 FileHandle;

+  UINT32 Flags;

+  UINT32 ReleaseFlags;

+  UINT64 LockOwner;

+} VIRTIO_FS_FUSE_RELEASE_REQUEST;

+

+//

 // Headers for VirtioFsFuseOpInit.

 //

 typedef struct {