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NtCreateFile/NtOpenFile cleanup. Now opens directories, too.

This commit is contained in:
Ben Vanik 2015-01-05 22:32:15 -08:00
parent 9e65e35a09
commit 540740ca41
1 changed files with 71 additions and 83 deletions
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154
src/xenia/kernel/xboxkrnl_io.cc
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@ -50,26 +50,28 @@ class X_OBJECT_ATTRIBUTES {
};
static_assert_size(X_OBJECT_ATTRIBUTES, 12 + sizeof(X_ANSI_STRING));
SHIM_CALL NtCreateFile_shim(PPCContext* ppc_state, KernelState* state) {
uint32_t handle_ptr = SHIM_GET_ARG_32(0);
uint32_t desired_access = SHIM_GET_ARG_32(1);
uint32_t object_attributes_ptr = SHIM_GET_ARG_32(2);
uint32_t io_status_block_ptr = SHIM_GET_ARG_32(3);
uint32_t allocation_size_ptr = SHIM_GET_ARG_32(4);
uint32_t file_attributes = SHIM_GET_ARG_32(5);
uint32_t share_access = SHIM_GET_ARG_32(6);
uint32_t creation_disposition = SHIM_GET_ARG_32(7);
struct FileDisposition {
static const uint32_t X_FILE_SUPERSEDE = 0x00000000;
static const uint32_t X_FILE_OPEN = 0x00000001;
static const uint32_t X_FILE_CREATE = 0x00000002;
static const uint32_t X_FILE_OPEN_IF = 0x00000003;
static const uint32_t X_FILE_OVERWRITE = 0x00000004;
static const uint32_t X_FILE_OVERWRITE_IF = 0x00000005;
};
X_OBJECT_ATTRIBUTES attrs(SHIM_MEM_BASE, object_attributes_ptr);
char* object_name = attrs.object_name.Duplicate();
XELOGD("NtCreateFile(%.8X, %.8X, %.8X(%s), %.8X, %.8X, %.8X, %d, %d)",
handle_ptr, desired_access, object_attributes_ptr,
!object_name ? "(null)" : object_name, io_status_block_ptr,
allocation_size_ptr, file_attributes, share_access,
creation_disposition);
struct FileAccess {
static const uint32_t X_GENERIC_READ = 1 << 0;
static const uint32_t X_GENERIC_WRITE = 1 << 1;
static const uint32_t X_GENERIC_EXECUTE = 1 << 2;
static const uint32_t X_GENERIC_ALL = 1 << 3;
};
X_STATUS NtCreateFile(PPCContext* ppc_state, KernelState* state,
uint32_t handle_ptr, uint32_t desired_access,
X_OBJECT_ATTRIBUTES* object_attrs,
const char* object_name, uint32_t io_status_block_ptr,
uint32_t allocation_size_ptr, uint32_t file_attributes,
uint32_t share_access, uint32_t creation_disposition) {
uint64_t allocation_size = 0; // is this correct???
if (allocation_size_ptr != 0) {
allocation_size = SHIM_MEM_64(allocation_size_ptr);
@ -83,33 +85,37 @@ SHIM_CALL NtCreateFile_shim(PPCContext* ppc_state, KernelState* state) {
std::unique_ptr<Entry> entry;
XFile* root_file = NULL;
if (attrs.root_directory != 0xFFFFFFFD && // ObDosDevices
attrs.root_directory != 0) {
result = state->object_table()->GetObject(attrs.root_directory,
if (object_attrs->root_directory != 0xFFFFFFFD && // ObDosDevices
object_attrs->root_directory != 0) {
result = state->object_table()->GetObject(object_attrs->root_directory,
(XObject**)&root_file);
assert_true(XSUCCEEDED(result));
assert_true(root_file->type() == XObject::Type::kTypeFile);
auto root_path = root_file->absolute_path();
auto target_path = root_path + object_name;
entry = std::move(fs->ResolvePath(target_path));
entry = fs->ResolvePath(target_path);
} else {
// Resolve the file using the virtual file system.
entry = std::move(fs->ResolvePath(object_name));
entry = fs->ResolvePath(object_name);
}
auto mode =
desired_access & GENERIC_WRITE ? fs::Mode::READ_WRITE : fs::Mode::READ;
XFile* file = NULL;
if (entry && entry->type() == Entry::Type::FILE) {
// Open the file.
result = fs->Open(std::move(entry), state, mode,
false, // TODO(benvanik): pick async mode, if needed.
&file);
} else {
XFile* file = nullptr;
if (!entry) {
result = X_STATUS_NO_SUCH_FILE;
info = X_FILE_DOES_NOT_EXIST;
} else if (creation_disposition != FileDisposition::X_FILE_OPEN ||
desired_access & FileAccess::X_GENERIC_WRITE ||
desired_access & FileAccess::X_GENERIC_ALL) {
// We don't support any write modes.
XELOGE("Attempted to open the file/dir for create/write");
result = X_STATUS_ACCESS_DENIED;
info = entry ? X_FILE_EXISTS : X_FILE_DOES_NOT_EXIST;
} else {
// Open the file/directory.
result = fs->Open(std::move(entry), state, fs::Mode::READ,
false, // TODO(benvanik): pick async mode, if needed.
&file);
}
if (XSUCCEEDED(result)) {
@ -130,6 +136,33 @@ SHIM_CALL NtCreateFile_shim(PPCContext* ppc_state, KernelState* state) {
}
}
return result;
}
SHIM_CALL NtCreateFile_shim(PPCContext* ppc_state, KernelState* state) {
uint32_t handle_ptr = SHIM_GET_ARG_32(0);
uint32_t desired_access = SHIM_GET_ARG_32(1);
uint32_t object_attributes_ptr = SHIM_GET_ARG_32(2);
uint32_t io_status_block_ptr = SHIM_GET_ARG_32(3);
uint32_t allocation_size_ptr = SHIM_GET_ARG_32(4);
uint32_t file_attributes = SHIM_GET_ARG_32(5);
uint32_t share_access = SHIM_GET_ARG_32(6);
uint32_t creation_disposition = SHIM_GET_ARG_32(7);
X_OBJECT_ATTRIBUTES object_attrs(SHIM_MEM_BASE, object_attributes_ptr);
char* object_name = object_attrs.object_name.Duplicate();
XELOGD("NtCreateFile(%.8X, %.8X, %.8X(%s), %.8X, %.8X, %.8X, %d, %d)",
handle_ptr, desired_access, object_attributes_ptr,
!object_name ? "(null)" : object_name, io_status_block_ptr,
allocation_size_ptr, file_attributes, share_access,
creation_disposition);
auto result =
NtCreateFile(ppc_state, state, handle_ptr, desired_access, &object_attrs,
object_name, io_status_block_ptr, allocation_size_ptr,
file_attributes, share_access, creation_disposition);
free(object_name);
SHIM_SET_RETURN_32(result);
}
@ -141,62 +174,17 @@ SHIM_CALL NtOpenFile_shim(PPCContext* ppc_state, KernelState* state) {
uint32_t io_status_block_ptr = SHIM_GET_ARG_32(3);
uint32_t open_options = SHIM_GET_ARG_32(4);
X_OBJECT_ATTRIBUTES attrs(SHIM_MEM_BASE, object_attributes_ptr);
char* object_name = attrs.object_name.Duplicate();
X_OBJECT_ATTRIBUTES object_attrs(SHIM_MEM_BASE, object_attributes_ptr);
char* object_name = object_attrs.object_name.Duplicate();
XELOGD("NtOpenFile(%.8X, %.8X, %.8X(%s), %.8X, %d)", handle_ptr,
desired_access, object_attributes_ptr,
!object_name ? "(null)" : object_name, io_status_block_ptr,
open_options);
X_STATUS result = X_STATUS_NO_SUCH_FILE;
uint32_t info = X_FILE_DOES_NOT_EXIST;
uint32_t handle;
XFile* root_file = NULL;
if (attrs.root_directory != 0xFFFFFFFD) { // ObDosDevices
result = state->object_table()->GetObject(attrs.root_directory,
(XObject**)&root_file);
assert_true(XSUCCEEDED(result));
assert_true(root_file->type() == XObject::Type::kTypeFile);
assert_always();
}
auto mode =
desired_access & GENERIC_WRITE ? fs::Mode::READ_WRITE : fs::Mode::READ;
// Resolve the file using the virtual file system.
FileSystem* fs = state->file_system();
auto entry = fs->ResolvePath(object_name);
XFile* file = NULL;
if (entry && entry->type() == Entry::Type::FILE) {
// Open the file.
result = fs->Open(std::move(entry), state, mode,
false, // TODO(benvanik): pick async mode, if needed.
&file);
} else {
result = X_STATUS_NO_SUCH_FILE;
info = X_FILE_DOES_NOT_EXIST;
}
if (XSUCCEEDED(result)) {
// Handle ref is incremented, so return that.
handle = file->handle();
file->Release();
result = X_STATUS_SUCCESS;
info = X_FILE_OPENED;
}
if (io_status_block_ptr) {
SHIM_SET_MEM_32(io_status_block_ptr, result); // Status
SHIM_SET_MEM_32(io_status_block_ptr + 4, info); // Information
}
if (XSUCCEEDED(result)) {
if (handle_ptr) {
SHIM_SET_MEM_32(handle_ptr, handle);
}
}
auto result = NtCreateFile(ppc_state, state, handle_ptr, desired_access,
&object_attrs, object_name, io_status_block_ptr, 0,
0, 0, FileDisposition::X_FILE_OPEN);
free(object_name);
SHIM_SET_RETURN_32(result);