diff options
| -rw-r--r-- | OvmfPkg/VirtioFsDxe/SimpleFsSetInfo.c | 107 |
1 files changed, 106 insertions, 1 deletions
diff --git a/OvmfPkg/VirtioFsDxe/SimpleFsSetInfo.c b/OvmfPkg/VirtioFsDxe/SimpleFsSetInfo.c index 55169dd..e7cc3d5 100644 --- a/OvmfPkg/VirtioFsDxe/SimpleFsSetInfo.c +++ b/OvmfPkg/VirtioFsDxe/SimpleFsSetInfo.c @@ -309,6 +309,111 @@ FreeDestination: }
/**
+ Update the attributes of a VIRTIO_FS_FILE as requested in EFI_FILE_INFO.
+
+ @param[in,out] VirtioFsFile The VIRTIO_FS_FILE to update the attributes of.
+
+ @param[in] NewFileInfo The new attributes requested by
+ EFI_FILE_PROTOCOL.SetInfo(). NewFileInfo->Size
+ and NewFileInfo->FileName are ignored.
+
+ @retval EFI_SUCCESS No attributes had to be updated.
+
+ @retval EFI_SUCCESS The required set of attribute updates has been
+ determined and performed successfully.
+
+ @retval EFI_ACCESS_DENIED NewFileInfo requests an update to a property
+ different from the EFI_FILE_READ_ONLY bit in the
+ Attribute field, but VirtioFsFile is not open for
+ writing.
+
+ @return Error codes propagated from underlying functions.
+**/
+STATIC
+EFI_STATUS
+UpdateAttributes (
+ IN OUT VIRTIO_FS_FILE *VirtioFsFile,
+ IN EFI_FILE_INFO *NewFileInfo
+ )
+{
+ VIRTIO_FS *VirtioFs;
+ EFI_STATUS Status;
+ VIRTIO_FS_FUSE_ATTRIBUTES_RESPONSE FuseAttr;
+ EFI_FILE_INFO FileInfo;
+ BOOLEAN UpdateFileSize;
+ UINT64 FileSize;
+ BOOLEAN UpdateAtime;
+ BOOLEAN UpdateMtime;
+ UINT64 Atime;
+ UINT64 Mtime;
+ BOOLEAN UpdateMode;
+ UINT32 Mode;
+
+ VirtioFs = VirtioFsFile->OwnerFs;
+
+ //
+ // Fetch the current attributes first, so we can build the difference between
+ // them and NewFileInfo.
+ //
+ Status = VirtioFsFuseGetAttr (VirtioFs, VirtioFsFile->NodeId, &FuseAttr);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ Status = VirtioFsFuseAttrToEfiFileInfo (&FuseAttr, &FileInfo);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ //
+ // Collect the updates.
+ //
+ if (VirtioFsFile->IsDirectory) {
+ UpdateFileSize = FALSE;
+ } else {
+ VirtioFsGetFuseSizeUpdate (&FileInfo, NewFileInfo, &UpdateFileSize,
+ &FileSize);
+ }
+
+ Status = VirtioFsGetFuseTimeUpdates (&FileInfo, NewFileInfo, &UpdateAtime,
+ &UpdateMtime, &Atime, &Mtime);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = VirtioFsGetFuseModeUpdate (&FileInfo, NewFileInfo, &UpdateMode,
+ &Mode);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // If no attribute updates are necessary, we're done.
+ //
+ if (!UpdateFileSize && !UpdateAtime && !UpdateMtime && !UpdateMode) {
+ return EFI_SUCCESS;
+ }
+ //
+ // If the file is not open for writing, then only Mode may be updated (for
+ // toggling EFI_FILE_READ_ONLY).
+ //
+ if (!VirtioFsFile->IsOpenForWriting &&
+ (UpdateFileSize || UpdateAtime || UpdateMtime)) {
+ return EFI_ACCESS_DENIED;
+ }
+ //
+ // Send the FUSE_SETATTR request now.
+ //
+ Status = VirtioFsFuseSetAttr (
+ VirtioFs,
+ VirtioFsFile->NodeId,
+ UpdateFileSize ? &FileSize : NULL,
+ UpdateAtime ? &Atime : NULL,
+ UpdateMtime ? &Mtime : NULL,
+ UpdateMode ? &Mode : NULL
+ );
+ return Status;
+}
+
+/**
Process an EFI_FILE_INFO setting request.
**/
STATIC
@@ -350,7 +455,7 @@ SetFileInfo ( //
// Update any attributes requested.
//
- Status = EFI_UNSUPPORTED;
+ Status = UpdateAttributes (VirtioFsFile, FileInfo);
//
// The UEFI spec does not speak about partial failure in
// EFI_FILE_PROTOCOL.SetInfo(); we won't try to roll back the rename (if
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