1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
const std = @import("std");
const uefi = std.os.uefi;
const io = std.io;
const Guid = uefi.Guid;
const Time = uefi.Time;
const Status = uefi.Status;
pub const FileProtocol = extern struct {
revision: u64,
_open: fn (*const FileProtocol, **const FileProtocol, [*:0]const u16, u64, u64) callconv(.C) Status,
_close: fn (*const FileProtocol) callconv(.C) Status,
_delete: fn (*const FileProtocol) callconv(.C) Status,
_read: fn (*const FileProtocol, *usize, [*]u8) callconv(.C) Status,
_write: fn (*const FileProtocol, *usize, [*]const u8) callconv(.C) Status,
_get_position: fn (*const FileProtocol, *u64) callconv(.C) Status,
_set_position: fn (*const FileProtocol, u64) callconv(.C) Status,
_get_info: fn (*const FileProtocol, *align(8) const Guid, *const usize, [*]u8) callconv(.C) Status,
_set_info: fn (*const FileProtocol, *align(8) const Guid, usize, [*]const u8) callconv(.C) Status,
_flush: fn (*const FileProtocol) callconv(.C) Status,
pub const SeekError = error{SeekError};
pub const GetSeekPosError = error{GetSeekPosError};
pub const ReadError = error{ReadError};
pub const WriteError = error{WriteError};
pub const SeekableStream = io.SeekableStream(*const FileProtocol, SeekError, GetSeekPosError, seekTo, seekBy, getPos, getEndPos);
pub const Reader = io.Reader(*const FileProtocol, ReadError, readFn);
pub const Writer = io.Writer(*const FileProtocol, WriteError, writeFn);
pub fn seekableStream(self: *FileProtocol) SeekableStream {
return .{ .context = self };
}
pub fn reader(self: *FileProtocol) Reader {
return .{ .context = self };
}
pub fn writer(self: *FileProtocol) Writer {
return .{ .context = self };
}
pub fn open(self: *const FileProtocol, new_handle: **const FileProtocol, file_name: [*:0]const u16, open_mode: u64, attributes: u64) Status {
return self._open(self, new_handle, file_name, open_mode, attributes);
}
pub fn close(self: *const FileProtocol) Status {
return self._close(self);
}
pub fn delete(self: *const FileProtocol) Status {
return self._delete(self);
}
pub fn read(self: *const FileProtocol, buffer_size: *usize, buffer: [*]u8) Status {
return self._read(self, buffer_size, buffer);
}
fn readFn(self: *const FileProtocol, buffer: []u8) ReadError!usize {
var size: usize = buffer.len;
if (.Success != self.read(&size, buffer.ptr)) return ReadError.ReadError;
return size;
}
pub fn write(self: *const FileProtocol, buffer_size: *usize, buffer: [*]const u8) Status {
return self._write(self, buffer_size, buffer);
}
fn writeFn(self: *const FileProtocol, bytes: []const u8) WriteError!usize {
var size: usize = bytes.len;
if (.Success != self.write(&size, bytes.ptr)) return WriteError.WriteError;
return size;
}
pub fn getPosition(self: *const FileProtocol, position: *u64) Status {
return self._get_position(self, position);
}
fn getPos(self: *const FileProtocol) GetSeekPosError!u64 {
var pos: u64 = undefined;
if (.Success != self.getPosition(&pos)) return GetSeekPosError.GetSeekPosError;
return pos;
}
fn getEndPos(self: *const FileProtocol) GetSeekPosError!u64 {
// preserve the old file position
var pos: u64 = undefined;
if (.Success != self.getPosition(&pos)) return GetSeekPosError.GetSeekPosError;
// seek to end of file to get position = file size
if (.Success != self.setPosition(efi_file_position_end_of_file)) return GetSeekPosError.GetSeekPosError;
// restore the old position
if (.Success != self.setPosition(pos)) return GetSeekPosError.GetSeekPosError;
// return the file size = position
return pos;
}
pub fn setPosition(self: *const FileProtocol, position: u64) Status {
return self._set_position(self, position);
}
fn seekTo(self: *const FileProtocol, pos: u64) SeekError!void {
if (.Success != self.setPosition(pos)) return SeekError.SeekError;
}
fn seekBy(self: *const FileProtocol, offset: i64) SeekError!void {
// save the old position and calculate the delta
var pos: u64 = undefined;
if (.Success != self.getPosition(&pos)) return SeekError.SeekError;
const seek_back = offset < 0;
const amt = std.math.absCast(offset);
if (seek_back) {
pos += amt;
} else {
pos -= amt;
}
if (.Success != self.setPosition(pos)) return SeekError.SeekError;
}
pub fn getInfo(self: *const FileProtocol, information_type: *align(8) const Guid, buffer_size: *usize, buffer: [*]u8) Status {
return self._get_info(self, information_type, buffer_size, buffer);
}
pub fn setInfo(self: *const FileProtocol, information_type: *align(8) const Guid, buffer_size: usize, buffer: [*]const u8) Status {
return self._set_info(self, information_type, buffer_size, buffer);
}
pub fn flush(self: *const FileProtocol) Status {
return self._flush(self);
}
pub const efi_file_mode_read: u64 = 0x0000000000000001;
pub const efi_file_mode_write: u64 = 0x0000000000000002;
pub const efi_file_mode_create: u64 = 0x8000000000000000;
pub const efi_file_read_only: u64 = 0x0000000000000001;
pub const efi_file_hidden: u64 = 0x0000000000000002;
pub const efi_file_system: u64 = 0x0000000000000004;
pub const efi_file_reserved: u64 = 0x0000000000000008;
pub const efi_file_directory: u64 = 0x0000000000000010;
pub const efi_file_archive: u64 = 0x0000000000000020;
pub const efi_file_valid_attr: u64 = 0x0000000000000037;
pub const efi_file_position_end_of_file: u64 = 0xffffffffffffffff;
};
pub const FileInfo = extern struct {
size: u64,
file_size: u64,
physical_size: u64,
create_time: Time,
last_access_time: Time,
modification_time: Time,
attribute: u64,
pub fn getFileName(self: *const FileInfo) [*:0]const u16 {
return @ptrCast([*:0]const u16, @ptrCast([*]const u8, self) + @sizeOf(FileInfo));
}
pub const efi_file_read_only: u64 = 0x0000000000000001;
pub const efi_file_hidden: u64 = 0x0000000000000002;
pub const efi_file_system: u64 = 0x0000000000000004;
pub const efi_file_reserved: u64 = 0x0000000000000008;
pub const efi_file_directory: u64 = 0x0000000000000010;
pub const efi_file_archive: u64 = 0x0000000000000020;
pub const efi_file_valid_attr: u64 = 0x0000000000000037;
pub const guid align(8) = Guid{
.time_low = 0x09576e92,
.time_mid = 0x6d3f,
.time_high_and_version = 0x11d2,
.clock_seq_high_and_reserved = 0x8e,
.clock_seq_low = 0x39,
.node = [_]u8{ 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b },
};
};
pub const FileSystemInfo = extern struct {
size: u64,
read_only: bool,
volume_size: u64,
free_space: u64,
block_size: u32,
_volume_label: u16,
pub fn getVolumeLabel(self: *const FileSystemInfo) [*:0]const u16 {
return @ptrCast([*:0]const u16, &self._volume_label);
}
pub const guid align(8) = Guid{
.time_low = 0x09576e93,
.time_mid = 0x6d3f,
.time_high_and_version = 0x11d2,
.clock_seq_high_and_reserved = 0x8e,
.clock_seq_low = 0x39,
.node = [_]u8{ 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b },
};
};
|
