From f058cb69d14439a2f1c5d57f9f2bd278fb080423 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 16 Dec 2020 22:10:56 +0100
Subject: OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_MKDIR
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Add the VirtioFsFuseMkDir() function, for sending the FUSE_MKDIR command
to the Virtio Filesystem device.

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: <20201216211125.19496-20-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
---
 OvmfPkg/Include/IndustryStandard/VirtioFs.h | 55 +++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'OvmfPkg/Include')

diff --git a/OvmfPkg/Include/IndustryStandard/VirtioFs.h b/OvmfPkg/Include/IndustryStandard/VirtioFs.h
index 7b6f303355..9ffeb9c8c9 100644
--- a/OvmfPkg/Include/IndustryStandard/VirtioFs.h
+++ b/OvmfPkg/Include/IndustryStandard/VirtioFs.h
@@ -81,6 +81,13 @@ typedef struct {
 //
 #define VIRTIO_FS_FUSE_ROOT_DIR_NODE_ID 1
 
+//
+// File mode bitmasks.
+//
+#define VIRTIO_FS_FUSE_MODE_PERM_RWXU 0000700u
+#define VIRTIO_FS_FUSE_MODE_PERM_RWXG 0000070u
+#define VIRTIO_FS_FUSE_MODE_PERM_RWXO 0000007u
+
 //
 // Flags for VirtioFsFuseOpOpen.
 //
@@ -92,6 +99,7 @@ typedef struct {
 //
 typedef enum {
   VirtioFsFuseOpForget      =  2,
+  VirtioFsFuseOpMkDir       =  9,
   VirtioFsFuseOpOpen        = 14,
   VirtioFsFuseOpRelease     = 18,
   VirtioFsFuseOpFsync       = 20,
@@ -123,6 +131,45 @@ typedef struct {
   UINT64 Unique;
 } VIRTIO_FS_FUSE_RESPONSE;
 
+//
+// Structure with which the Virtio Filesystem device reports a NodeId to the
+// FUSE client (i.e., to the Virtio Filesystem driver). This structure is a
+// part of the response headers for operations that inform the FUSE client of
+// an inode.
+//
+typedef struct {
+  UINT64 NodeId;
+  UINT64 Generation;
+  UINT64 EntryValid;
+  UINT64 AttrValid;
+  UINT32 EntryValidNsec;
+  UINT32 AttrValidNsec;
+} VIRTIO_FS_FUSE_NODE_RESPONSE;
+
+//
+// Structure describing the host-side attributes of an inode. This structure is
+// a part of the response headers for operations that inform the FUSE client of
+// an inode.
+//
+typedef struct {
+  UINT64 Ino;
+  UINT64 Size;
+  UINT64 Blocks;
+  UINT64 Atime;
+  UINT64 Mtime;
+  UINT64 Ctime;
+  UINT32 AtimeNsec;
+  UINT32 MtimeNsec;
+  UINT32 CtimeNsec;
+  UINT32 Mode;
+  UINT32 Nlink;
+  UINT32 Uid;
+  UINT32 Gid;
+  UINT32 Rdev;
+  UINT32 Blksize;
+  UINT32 Padding;
+} VIRTIO_FS_FUSE_ATTRIBUTES_RESPONSE;
+
 //
 // Header for VirtioFsFuseOpForget.
 //
@@ -130,6 +177,14 @@ typedef struct {
   UINT64 NumberOfLookups;
 } VIRTIO_FS_FUSE_FORGET_REQUEST;
 
+//
+// Header for VirtioFsFuseOpMkDir.
+//
+typedef struct {
+  UINT32 Mode;
+  UINT32 Umask;
+} VIRTIO_FS_FUSE_MKDIR_REQUEST;
+
 //
 // Headers for VirtioFsFuseOpOpen and VirtioFsFuseOpOpenDir.
 //
-- 
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