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Making stateless file IO platform-agnostic.

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This commit is contained in:
Ben Vanik
2015-07-15 18:01:09 -07:00
parent 376307cfa2
commit 42400d06a9
6 changed files with 149 additions and 70 deletions
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39
src/xenia/vfs/devices/host_path_entry.cc
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@@ -9,10 +9,10 @@
#include "xenia/vfs/devices/host_path_entry.h"
#include "xenia/base/filesystem.h"
#include "xenia/base/logging.h"
#include "xenia/base/mapped_memory.h"
#include "xenia/base/math.h"
#include "xenia/base/platform_win.h"
#include "xenia/base/string.h"
#include "xenia/vfs/devices/host_path_file.h"
@@ -54,41 +54,14 @@ X_STATUS HostPathEntry::Open(KernelState* kernel_state, uint32_t desired_access,
XELOGE("Attempting to open file for write access on read-only device");
return X_STATUS_ACCESS_DENIED;
}
DWORD open_access = 0;
if (desired_access & FileAccess::kGenericRead) {
open_access |= GENERIC_READ;
}
if (desired_access & FileAccess::kGenericWrite) {
open_access |= GENERIC_WRITE;
}
if (desired_access & FileAccess::kGenericExecute) {
open_access |= GENERIC_EXECUTE;
}
if (desired_access & FileAccess::kGenericAll) {
open_access |= GENERIC_ALL;
}
if (desired_access & FileAccess::kFileReadData) {
open_access |= FILE_READ_DATA;
}
if (desired_access & FileAccess::kFileWriteData) {
open_access |= FILE_WRITE_DATA;
}
if (desired_access & FileAccess::kFileAppendData) {
open_access |= FILE_APPEND_DATA;
}
DWORD share_mode = FILE_SHARE_READ;
// We assume we've already created the file in the caller.
DWORD creation_disposition = OPEN_EXISTING;
HANDLE file =
CreateFileW(local_path_.c_str(), desired_access, share_mode, NULL,
creation_disposition, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (file == INVALID_HANDLE_VALUE) {
auto file_handle =
xe::filesystem::FileHandle::OpenExisting(local_path_, desired_access);
if (!file_handle) {
// TODO(benvanik): pick correct response.
return X_STATUS_NO_SUCH_FILE;
}
*out_file = object_ref<XFile>(
new HostPathFile(kernel_state, desired_access, this, file));
*out_file = object_ref<XFile>(new HostPathFile(kernel_state, desired_access,
this, std::move(file_handle)));
return X_STATUS_SUCCESS;
}