Diamond75/Panda3DS
1
0
Fork 0
mirror of https://github.com/wheremyfoodat/Panda3DS.git synced 2025-04-06 22:25:41 +12:00
Code Issues Projects Releases Packages Wiki Activity Actions

[FS] Implement ReadFile for files with host OS file descriptors.

Browse source
This commit is contained in:
wheremyfoodat 2023-01-23 13:34:31 +02:00
parent 098b70690a
commit c8a4c7d7fa
1 changed files with 23 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
src/core/kernel/file_operations.cpp
View file

@ -56,9 +56,31 @@ void Kernel::readFile(u32 messagePointer, Handle fileHandle) {
if (!file->isOpen) {
Helpers::panic("Tried to read closed file");
}
// Handle files with their own file descriptors by just fread'ing the data
if (file->fd) {
std::unique_ptr<u8[]> data(new u8[size]);
IOFile f(file->fd);
auto [success, bytesRead] = f.readBytes(data.get(), size);
if (!success) {
Helpers::panic("Kernel::ReadFile with file descriptor failed");
}
else {
for (size_t i = 0; i < bytesRead; i++) {
mem.write8(dataPointer + i, data[i]);
}
mem.write32(messagePointer + 4, Result::Success);
mem.write32(messagePointer + 8, bytesRead);
}
return;
}
// Handle files without their own FD, such as SelfNCCH files
auto archive = file->archive;
std::optional<u32> bytesRead = archive->readFile(file, offset, size, dataPointer);
if (!bytesRead.has_value()) {
Helpers::panic("Kernel::ReadFile failed");