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-rw-r--r--OvmfPkg/Include/IndustryStandard/VirtioFs.h35
-rw-r--r--OvmfPkg/VirtioFsDxe/FuseSetAttr.c174
-rw-r--r--OvmfPkg/VirtioFsDxe/VirtioFsDxe.h10
-rw-r--r--OvmfPkg/VirtioFsDxe/VirtioFsDxe.inf1
4 files changed, 219 insertions, 1 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/VirtioFs.h b/OvmfPkg/Include/IndustryStandard/VirtioFs.h
index 0b2ed70100..15fb28f95a 100644
--- a/OvmfPkg/Include/IndustryStandard/VirtioFs.h
+++ b/OvmfPkg/Include/IndustryStandard/VirtioFs.h
@@ -103,6 +103,15 @@ typedef struct {
#define VIRTIO_FS_FUSE_MODE_PERM_WOTH 0000002u
//
+// Flags for VirtioFsFuseOpSetAttr, in the VIRTIO_FS_FUSE_SETATTR_REQUEST.Valid
+// field.
+//
+#define VIRTIO_FS_FUSE_SETATTR_REQ_F_MODE BIT0
+#define VIRTIO_FS_FUSE_SETATTR_REQ_F_SIZE BIT3
+#define VIRTIO_FS_FUSE_SETATTR_REQ_F_ATIME BIT4
+#define VIRTIO_FS_FUSE_SETATTR_REQ_F_MTIME BIT5
+
+//
// Flags for VirtioFsFuseOpOpen.
//
#define VIRTIO_FS_FUSE_OPEN_REQ_F_RDONLY 0
@@ -153,6 +162,7 @@ typedef enum {
VirtioFsFuseOpLookup = 1,
VirtioFsFuseOpForget = 2,
VirtioFsFuseOpGetAttr = 3,
+ VirtioFsFuseOpSetAttr = 4,
VirtioFsFuseOpMkDir = 9,
VirtioFsFuseOpUnlink = 10,
VirtioFsFuseOpRmDir = 11,
@@ -240,7 +250,8 @@ typedef struct {
} VIRTIO_FS_FUSE_FORGET_REQUEST;
//
-// Headers for VirtioFsFuseOpGetAttr.
+// Headers for VirtioFsFuseOpGetAttr (VIRTIO_FS_FUSE_GETATTR_RESPONSE is also
+// for VirtioFsFuseOpSetAttr).
//
typedef struct {
UINT32 GetAttrFlags;
@@ -255,6 +266,28 @@ typedef struct {
} VIRTIO_FS_FUSE_GETATTR_RESPONSE;
//
+// Header for VirtioFsFuseOpSetAttr.
+//
+typedef struct {
+ UINT32 Valid;
+ UINT32 Padding;
+ UINT64 FileHandle;
+ UINT64 Size;
+ UINT64 LockOwner;
+ UINT64 Atime;
+ UINT64 Mtime;
+ UINT64 Ctime;
+ UINT32 AtimeNsec;
+ UINT32 MtimeNsec;
+ UINT32 CtimeNsec;
+ UINT32 Mode;
+ UINT32 Unused4;
+ UINT32 Uid;
+ UINT32 Gid;
+ UINT32 Unused5;
+} VIRTIO_FS_FUSE_SETATTR_REQUEST;
+
+//
// Header for VirtioFsFuseOpMkDir.
//
typedef struct {
diff --git a/OvmfPkg/VirtioFsDxe/FuseSetAttr.c b/OvmfPkg/VirtioFsDxe/FuseSetAttr.c
new file mode 100644
index 0000000000..dcd0141720
--- /dev/null
+++ b/OvmfPkg/VirtioFsDxe/FuseSetAttr.c
@@ -0,0 +1,174 @@
+/** @file
+ FUSE_SETATTR wrapper for the Virtio Filesystem device.
+
+ Copyright (C) 2020, Red Hat, Inc.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "VirtioFsDxe.h"
+
+/**
+ Send the FUSE_SETATTR request to the Virtio Filesystem device, for changing
+ the attributes of an inode.
+
+ The function may only be called after VirtioFsFuseInitSession() returns
+ successfully and before VirtioFsUninit() is called.
+
+ @param[in,out] VirtioFs The Virtio Filesystem device to send the
+ FUSE_SETATTR request to. On output, the FUSE request
+ counter "VirtioFs->RequestId" will have been
+ incremented.
+
+ @param[in] NodeId The inode number representing the regular file or
+ directory whose attributes should be changed.
+
+ @param[in] Size The new size to set for the regular file. If NULL,
+ then the file size will not be changed. If NodeId
+ refers to a directory, then the caller is
+ responsible for passing NULL as Size.
+
+ @param[in] Atime The new last access time to set for the regular file
+ or directory (seconds since the Epoch). If NULL,
+ then the last access time is not changed.
+
+ @param[in] Mtime The new last modification time to set for the
+ regular file or directory (seconds since the Epoch).
+ If NULL, then the last modification time is not
+ changed.
+
+ @param[in] Mode The new file mode bits to set for the regular file
+ or directory. If NULL, then the file mode bits are
+ not changed.
+
+ @retval EFI_SUCCESS The attributes have been updated.
+
+ @return The "errno" value mapped to an EFI_STATUS code, if the
+ Virtio Filesystem device explicitly reported an error.
+
+ @return Error codes propagated from VirtioFsSgListsValidate(),
+ VirtioFsFuseNewRequest(), VirtioFsSgListsSubmit(),
+ VirtioFsFuseCheckResponse().
+**/
+EFI_STATUS
+VirtioFsFuseSetAttr (
+ IN OUT VIRTIO_FS *VirtioFs,
+ IN UINT64 NodeId,
+ IN UINT64 *Size OPTIONAL,
+ IN UINT64 *Atime OPTIONAL,
+ IN UINT64 *Mtime OPTIONAL,
+ IN UINT32 *Mode OPTIONAL
+ )
+{
+ VIRTIO_FS_FUSE_REQUEST CommonReq;
+ VIRTIO_FS_FUSE_SETATTR_REQUEST AttrReq;
+ VIRTIO_FS_IO_VECTOR ReqIoVec[2];
+ VIRTIO_FS_SCATTER_GATHER_LIST ReqSgList;
+ VIRTIO_FS_FUSE_RESPONSE CommonResp;
+ VIRTIO_FS_FUSE_GETATTR_RESPONSE GetAttrResp;
+ VIRTIO_FS_FUSE_ATTRIBUTES_RESPONSE AttrResp;
+ VIRTIO_FS_IO_VECTOR RespIoVec[3];
+ VIRTIO_FS_SCATTER_GATHER_LIST RespSgList;
+ EFI_STATUS Status;
+
+ //
+ // Set up the scatter-gather lists.
+ //
+ ReqIoVec[0].Buffer = &CommonReq;
+ ReqIoVec[0].Size = sizeof CommonReq;
+ ReqIoVec[1].Buffer = &AttrReq;
+ ReqIoVec[1].Size = sizeof AttrReq;
+ ReqSgList.IoVec = ReqIoVec;
+ ReqSgList.NumVec = ARRAY_SIZE (ReqIoVec);
+
+ RespIoVec[0].Buffer = &CommonResp;
+ RespIoVec[0].Size = sizeof CommonResp;
+ RespIoVec[1].Buffer = &GetAttrResp;
+ RespIoVec[1].Size = sizeof GetAttrResp;
+ RespIoVec[2].Buffer = &AttrResp;
+ RespIoVec[2].Size = sizeof AttrResp;
+ RespSgList.IoVec = RespIoVec;
+ RespSgList.NumVec = ARRAY_SIZE (RespIoVec);
+
+ //
+ // Validate the scatter-gather lists; calculate the total transfer sizes.
+ //
+ Status = VirtioFsSgListsValidate (VirtioFs, &ReqSgList, &RespSgList);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Populate the common request header.
+ //
+ Status = VirtioFsFuseNewRequest (VirtioFs, &CommonReq, ReqSgList.TotalSize,
+ VirtioFsFuseOpSetAttr, NodeId);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Populate the FUSE_SETATTR-specific fields.
+ //
+ AttrReq.Valid = 0;
+ AttrReq.Padding = 0;
+ AttrReq.FileHandle = 0;
+ AttrReq.Size = (Size == NULL) ? 0 : *Size;
+ AttrReq.LockOwner = 0;
+ AttrReq.Atime = (Atime == NULL) ? 0 : *Atime;
+ AttrReq.Mtime = (Mtime == NULL) ? 0 : *Mtime;
+ AttrReq.Ctime = 0;
+ AttrReq.AtimeNsec = 0;
+ AttrReq.MtimeNsec = 0;
+ AttrReq.CtimeNsec = 0;
+ AttrReq.Mode = (Mode == NULL) ? 0 : *Mode;
+ AttrReq.Unused4 = 0;
+ AttrReq.Uid = 0;
+ AttrReq.Gid = 0;
+ AttrReq.Unused5 = 0;
+
+ if (Size != NULL) {
+ AttrReq.Valid |= VIRTIO_FS_FUSE_SETATTR_REQ_F_SIZE;
+ }
+ if (Atime != NULL) {
+ AttrReq.Valid |= VIRTIO_FS_FUSE_SETATTR_REQ_F_ATIME;
+ }
+ if (Mtime != NULL) {
+ AttrReq.Valid |= VIRTIO_FS_FUSE_SETATTR_REQ_F_MTIME;
+ }
+ if (Mode != NULL) {
+ AttrReq.Valid |= VIRTIO_FS_FUSE_SETATTR_REQ_F_MODE;
+ }
+
+ //
+ // Submit the request.
+ //
+ Status = VirtioFsSgListsSubmit (VirtioFs, &ReqSgList, &RespSgList);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Verify the response (all response buffers are fixed size).
+ //
+ Status = VirtioFsFuseCheckResponse (&RespSgList, CommonReq.Unique, NULL);
+ if (Status == EFI_DEVICE_ERROR) {
+ DEBUG ((DEBUG_ERROR, "%a: Label=\"%s\" NodeId=%Lu", __FUNCTION__,
+ VirtioFs->Label, NodeId));
+ if (Size != NULL) {
+ DEBUG ((DEBUG_ERROR, " Size=0x%Lx", *Size));
+ }
+ if (Atime != NULL) {
+ DEBUG ((DEBUG_ERROR, " Atime=%Lu", *Atime));
+ }
+ if (Mtime != NULL) {
+ DEBUG ((DEBUG_ERROR, " Mtime=%Lu", *Mtime));
+ }
+ if (Mode != NULL) {
+ DEBUG ((DEBUG_ERROR, " Mode=0x%x", *Mode)); // no support for octal :/
+ }
+ DEBUG ((DEBUG_ERROR, " Errno=%d\n", CommonResp.Error));
+ Status = VirtioFsErrnoToEfiStatus (CommonResp.Error);
+ }
+ return Status;
+}
diff --git a/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h b/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
index a6dfac71f4..9e6348f938 100644
--- a/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
+++ b/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
@@ -309,6 +309,16 @@ VirtioFsFuseGetAttr (
);
EFI_STATUS
+VirtioFsFuseSetAttr (
+ IN OUT VIRTIO_FS *VirtioFs,
+ IN UINT64 NodeId,
+ IN UINT64 *Size OPTIONAL,
+ IN UINT64 *Atime OPTIONAL,
+ IN UINT64 *Mtime OPTIONAL,
+ IN UINT32 *Mode OPTIONAL
+ );
+
+EFI_STATUS
VirtioFsFuseMkDir (
IN OUT VIRTIO_FS *VirtioFs,
IN UINT64 ParentNodeId,
diff --git a/OvmfPkg/VirtioFsDxe/VirtioFsDxe.inf b/OvmfPkg/VirtioFsDxe/VirtioFsDxe.inf
index 9dccd7d6a9..8d962bcdc1 100644
--- a/OvmfPkg/VirtioFsDxe/VirtioFsDxe.inf
+++ b/OvmfPkg/VirtioFsDxe/VirtioFsDxe.inf
@@ -96,6 +96,7 @@
FuseRead.c
FuseRelease.c
FuseRename.c
+ FuseSetAttr.c
FuseStatFs.c
FuseUnlink.c
FuseWrite.c
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 22:23:08 +0000