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OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_CREATE

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Add the VirtioFsFuseOpenOrCreate() function, for sending the FUSE_CREATE
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: <20201216211125.19496-21-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
This commit is contained in:
Laszlo Ersek
2020-12-16 22:10:57 +01:00
committed by mergify[bot]
parent f058cb69d1
commit a70860f449
4 changed files with 182 additions and 0 deletions
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17
OvmfPkg/Include/IndustryStandard/VirtioFs.h
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@@ -85,8 +85,14 @@ typedef struct {
// File mode bitmasks.
//
#define VIRTIO_FS_FUSE_MODE_PERM_RWXU 0000700u
#define VIRTIO_FS_FUSE_MODE_PERM_RUSR 0000400u
#define VIRTIO_FS_FUSE_MODE_PERM_WUSR 0000200u
#define VIRTIO_FS_FUSE_MODE_PERM_RWXG 0000070u
#define VIRTIO_FS_FUSE_MODE_PERM_RGRP 0000040u
#define VIRTIO_FS_FUSE_MODE_PERM_WGRP 0000020u
#define VIRTIO_FS_FUSE_MODE_PERM_RWXO 0000007u
#define VIRTIO_FS_FUSE_MODE_PERM_ROTH 0000004u
#define VIRTIO_FS_FUSE_MODE_PERM_WOTH 0000002u
//
// Flags for VirtioFsFuseOpOpen.
@@ -108,6 +114,7 @@ typedef enum {
VirtioFsFuseOpOpenDir = 27,
VirtioFsFuseOpReleaseDir = 29,
VirtioFsFuseOpFsyncDir = 30,
VirtioFsFuseOpCreate = 35,
} VIRTIO_FS_FUSE_OPCODE;
#pragma pack (1)
@@ -251,6 +258,16 @@ typedef struct {
UINT16 MapAlignment;
UINT32 Unused[8];
} VIRTIO_FS_FUSE_INIT_RESPONSE;
//
// Header for VirtioFsFuseOpCreate.
//
typedef struct {
UINT32 Flags;
UINT32 Mode;
UINT32 Umask;
UINT32 Padding;
} VIRTIO_FS_FUSE_CREATE_REQUEST;
#pragma pack ()
#endif // VIRTIO_FS_H_