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[FS] Implement SetSize

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wheremyfoodat 2023-04-11 01:11:20 +03:00
parent 82b986bbc0
commit 075a244dd0
3 changed files with 51 additions and 0 deletions
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30
src/core/kernel/file_operations.cpp
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@ -5,6 +5,7 @@ namespace FileOps {
Read = 0x080200C2,
Write = 0x08030102,
GetSize = 0x08040000,
SetSize = 0x08050080,
Close = 0x08080000,
SetPriority = 0x080A0040,
OpenLinkFile = 0x080C0000
@ -25,6 +26,7 @@ void Kernel::handleFileOperation(u32 messagePointer, Handle file) {
case FileOps::GetSize: getFileSize(messagePointer, file); break;
case FileOps::OpenLinkFile: openLinkFile(messagePointer, file); break;
case FileOps::Read: readFile(messagePointer, file); break;
case FileOps::SetSize: setFileSize(messagePointer, file); break;
case FileOps::SetPriority: setFilePriority(messagePointer, file); break;
case FileOps::Write: writeFile(messagePointer, file); break;
default: Helpers::panic("Unknown file operation: %08X", cmd);
@ -132,6 +134,34 @@ void Kernel::writeFile(u32 messagePointer, Handle fileHandle) {
}
}
void Kernel::setFileSize(u32 messagePointer, Handle fileHandle) {
logFileIO("Setting size of file %X\n", fileHandle);
const auto p = getObject(fileHandle, KernelObjectType::File);
if (p == nullptr) [[unlikely]] {
Helpers::panic("Called SetFileSize on non-existent file");
}
FileSession* file = p->getData<FileSession>();
if (!file->isOpen) {
Helpers::panic("Tried to get size of closed file");
}
if (file->fd) {
const u64 newSize = mem.read64(messagePointer + 4);
IOFile f(file->fd);
bool success = f.setSize(newSize);
if (success) {
mem.write32(messagePointer + 4, Result::Success);
} else {
Helpers::panic("FileOp::SetFileSize failed");
}
} else {
Helpers::panic("Tried to set file size of file without file descriptor");
}
}
void Kernel::getFileSize(u32 messagePointer, Handle fileHandle) {
logFileIO("Getting size of file %X\n", fileHandle);