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Accurate directory handling in open

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Directories can be opened, and can be created in open, these changes should handle that more accurately.
This commit is contained in:
Stephen Miller 2025-04-26 23:27:34 -05:00
parent 83926f90eb
commit 4118b5f87f
1 changed files with 56 additions and 36 deletions
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92
src/core/libraries/kernel/file_system.cpp
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@ -94,33 +94,57 @@ s32 PS4_SYSV_ABI open(const char* raw_path, s32 flags, u16 mode) {
}
}
file->m_guest_name = path;
file->m_host_name = mnt->GetHostPath(file->m_guest_name);
bool exists = std::filesystem::exists(file->m_host_name);
s32 e = 0;
if (directory) {
file->type = Core::FileSys::FileType::Directory;
file->m_guest_name = path;
file->m_host_name = mnt->GetHostPath(file->m_guest_name);
if (!std::filesystem::is_directory(file->m_host_name)) { // directory doesn't exist
if (create) {
if (excl && exists) {
// Error if file exists
h->DeleteHandle(handle);
*__Error() = POSIX_EEXIST;
return -1;
}
if (!std::filesystem::create_directory(file->m_host_name)) {
// Directory creation failed
*__Error() = POSIX_EIO;
return -1;
}
} else if (!exists) {
// File to open doesn't exist, return ENOENT
h->DeleteHandle(handle);
*__Error() = POSIX_ENOENT;
return -1;
}
if (read) {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Read);
} else if (write || rdwr || append || truncate) {
// Cannot open directories with any type of write access
h->DeleteHandle(handle);
*__Error() = POSIX_EISDIR;
return -1;
} else {
if (create) {
return handle; // dir already exists
} else {
mnt->IterateDirectory(file->m_guest_name,
[&file](const auto& ent_path, const auto ent_is_file) {
auto& dir_entry = file->dirents.emplace_back();
dir_entry.name = ent_path.filename().string();
dir_entry.isFile = ent_is_file;
});
file->dirents_index = 0;
}
// Invalid flags
*__Error() = POSIX_EINVAL;
return -1;
}
// If opening is a success, iterate through contents
if (e == 0) {
mnt->IterateDirectory(file->m_guest_name,
[&file](const auto& ent_path, const auto ent_is_file) {
auto& dir_entry = file->dirents.emplace_back();
dir_entry.name = ent_path.filename().string();
dir_entry.isFile = ent_is_file;
});
file->dirents_index = 0;
}
} else {
file->m_guest_name = path;
file->m_host_name = mnt->GetHostPath(file->m_guest_name);
bool exists = std::filesystem::exists(file->m_host_name);
int e = 0;
if (create) {
if (excl && exists) {
// Error if file exists
@ -140,20 +164,15 @@ s32 PS4_SYSV_ABI open(const char* raw_path, s32 flags, u16 mode) {
if (read) {
// Read only
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Read);
} else if (append) {
// Append can be specified with rdwr or write, but we treat it as a separate mode.
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Append);
} else if (write) {
// Write only
if (append) {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Append);
} else {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Write);
}
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Write);
} else if (rdwr) {
// Read and write
if (append) {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::Append);
} else {
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::ReadWrite);
}
e = file->f.Open(file->m_host_name, Common::FS::FileAccessMode::ReadWrite);
} else {
// Invalid flags
*__Error() = POSIX_EINVAL;
@ -164,14 +183,15 @@ s32 PS4_SYSV_ABI open(const char* raw_path, s32 flags, u16 mode) {
// If the file was opened successfully and truncate was enabled, reduce size to 0
file->f.SetSize(0);
}
if (e != 0) {
// Open failed in platform-specific code, errno needs to be converted.
h->DeleteHandle(handle);
SetPosixErrno(e);
return -1;
}
}
if (e != 0) {
// Open failed in platform-specific code, errno needs to be converted.
h->DeleteHandle(handle);
SetPosixErrno(e);
return -1;
}
file->is_opened = true;
return handle;
}