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
|
//! Local interoperability client. The parent connects stdio to a reference server.
const std = @import("std");
const c9 = @import("cloud9");
const libc = std.c;
const Session = struct {
client: c9.Client,
requests: usize = 0,
bytes_read: usize = 0,
bytes_written: usize = 0,
read_calls: usize = 0,
write_calls: usize = 0,
fn ask(s: *Session, request: c9.Client.Request) !c9.Client.Result {
const tag = try s.client.submit(request);
s.requests += 1;
while (s.client.output().len != 0) {
const output = s.client.output();
s.write_calls += 1;
// Fragment requests across their header and body fields.
const n = libc.write(1, output.ptr, @min(output.len, 3));
if (n <= 0) return error.Write;
s.bytes_written += @intCast(n);
s.client.wrote(@intCast(n));
}
while (true) {
if (s.client.take()) |done| {
if (done.tag != tag) return error.Tag;
if (done.result == .fail) {
std.debug.print("remote error: {s}\n", .{done.result.fail});
return error.Remote;
}
return done.result;
}
if (s.client.dead) return error.Protocol;
var buffer: [7]u8 = undefined;
s.read_calls += 1;
const n = libc.read(0, &buffer, buffer.len);
if (n <= 0) return error.Read;
s.bytes_read += @intCast(n);
if (s.client.push(buffer[0..@intCast(n)]) != n) return error.InputFull;
}
}
};
pub fn main(init: std.process.Init) !void {
const args = try init.minimal.args.toSlice(init.arena.allocator());
if (args.len != 3) return error.Arguments;
const seed = try std.fmt.parseInt(u64, args[1], 10);
const rounds = try std.fmt.parseInt(usize, args[2], 10);
if (rounds == 0 or rounds > 10000) return error.Arguments;
var random: std.Random.DefaultPrng = .init(seed);
var input: [8192]u8 = undefined;
var output: [8192]u8 = undefined;
var session: Session = .{ .client = .init(.{ .in = &input, .out = &output }) };
const version = (try session.ask(.{ .version = .{} })).version;
if (version.msize > input.len or !std.mem.eql(u8, version.version, "9P2000")) return error.Version;
_ = try session.ask(.{ .attach = .{ .fid = 0, .uname = "user" } });
var expected: [4096]u8 = @splat(0);
var length: usize = 0;
for (0..rounds) |_| {
const walk = (try session.ask(.{ .walk = .{ .fid = 0, .newfid = 1, .names = &.{"file"} } })).walk;
if (walk.nwqid != 1 or walk.wqid[0].type & c9.qtdir != 0) return error.Walk;
_ = try session.ask(.{ .open = .{ .fid = 1, .mode = c9.ordwr } });
const offset = random.random().uintLessThan(usize, 2048);
const count = random.random().uintLessThan(usize, 1024) + 1;
var data: [1024]u8 = undefined;
random.random().bytes(data[0..count]);
const written = (try session.ask(.{ .write = .{ .fid = 1, .offset = offset, .data = data[0..count] } })).write;
if (written != count) return error.WriteCount;
@memcpy(expected[offset..][0..count], data[0..count]);
length = @max(length, offset + count);
const result = (try session.ask(.{ .read = .{ .fid = 1, .offset = 0, .count = expected.len } })).read;
if (!std.mem.eql(u8, result, expected[0..length])) return error.Contents;
const stat = (try session.ask(.{ .stat = .{ .fid = 1 } })).stat;
if (stat.length != length or !std.mem.eql(u8, stat.name, "file")) return error.Stat;
const eof = (try session.ask(.{ .read = .{ .fid = 1, .offset = length, .count = 1 } })).read;
if (eof.len != 0) return error.Eof;
_ = try session.ask(.{ .clunk = .{ .fid = 1 } });
}
_ = try session.ask(.{ .clunk = .{ .fid = 0 } });
std.debug.print("{{\"requests\":{d},\"bytes_read\":{d},\"bytes_written\":{d},\"read_calls\":{d},\"write_calls\":{d},\"seed\":{d},\"rounds\":{d}}}\n", .{ session.requests, session.bytes_read, session.bytes_written, session.read_calls, session.write_calls, seed, rounds });
}
|
