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a/lib/std/Io/Uring.zig+++ b/lib/std/Io/Uring.zig@@ -771,16 +771,16 @@ .random = random, .randomSecure = randomSecure, - .netListenIp = netListenIpUnavailable,- .netAccept = netAcceptUnavailable,+ .netListenIp = netListenIp,+ .netAccept = netAccept, .netBindIp = netBindIp,- .netConnectIp = netConnectIpUnavailable,+ .netConnectIp = netConnectIp, .netListenUnix = netListenUnixUnavailable, .netConnectUnix = netConnectUnixUnavailable, .netSocketCreatePair = netSocketCreatePairUnavailable,- .netSend = netSendUnavailable,- .netRead = netReadUnavailable,- .netWrite = netWriteUnavailable,+ .netSend = netSend,+ .netRead = netRead,+ .netWrite = netWrite, .netWriteFile = netWriteFileUnavailable, .netClose = netClose, .netShutdown = netShutdown,@@ -4953,28 +4953,102 @@ }; } -fn netListenIpUnavailable(+fn netListenIp( userdata: ?*anyopaque, address: *const net.IpAddress, options: net.IpAddress.ListenOptions, ) net.IpAddress.ListenError!net.Socket { const ev: *Evented = @ptrCast(@alignCast(userdata));- _ = ev;- _ = address;- _ = options;- return error.NetworkDown;+ const family = posixAddressFamily(address);+ var maybe_sync: CancelRegion.Sync.Maybe = .{ .cancel_region = .init() };+ defer maybe_sync.deinit(ev);+ const socket_fd = try ev.socket(&maybe_sync.cancel_region, family, .{+ .mode = options.mode,+ .protocol = options.protocol,+ });+ errdefer ev.closeAsync(socket_fd);+ if (options.reuse_address) {+ try ev.setsockopt(&maybe_sync.cancel_region, socket_fd, linux.SOL.SOCKET, linux.SO.REUSEADDR, 1);+ try ev.setsockopt(&maybe_sync.cancel_region, socket_fd, linux.SOL.SOCKET, linux.SO.REUSEPORT, 1);+ }+ var storage: PosixAddress = undefined;+ var addr_len = addressToPosix(address, &storage);+ // bind + listen: sync syscalls (IORING_OP_BIND/LISTEN require kernel 6.11+)+ switch (linux.errno(linux.bind(socket_fd, &storage.any, addr_len))) {+ .SUCCESS => {},+ .ADDRINUSE => return error.AddressInUse,+ .AFNOSUPPORT => return error.AddressFamilyUnsupported,+ .ADDRNOTAVAIL => return error.AddressUnavailable,+ .BADF => |err| return errnoBug(err),+ .INVAL => |err| return errnoBug(err),+ .NOTSOCK => |err| return errnoBug(err),+ .FAULT => |err| return errnoBug(err),+ .NOMEM => return error.SystemResources,+ else => |err| return unexpectedErrno(err),+ }+ switch (linux.errno(linux.listen(socket_fd, options.kernel_backlog))) {+ .SUCCESS => {},+ .ADDRINUSE => return error.AddressInUse,+ .BADF => |err| return errnoBug(err),+ .NOTSOCK => |err| return errnoBug(err),+ .OPNOTSUPP => |err| return errnoBug(err),+ else => |err| return unexpectedErrno(err),+ }+ try ev.getsockname(try maybe_sync.enterSync(ev), socket_fd, &storage.any, &addr_len);+ return .{ .handle = socket_fd, .address = addressFromPosix(&storage) }; } -fn netAcceptUnavailable(+fn netAccept( userdata: ?*anyopaque, listen_handle: net.Socket.Handle, options: net.Server.AcceptOptions, ) net.Server.AcceptError!net.Socket {- const ev: *Evented = @ptrCast(@alignCast(userdata));- _ = ev;- _ = listen_handle; _ = options;- return error.NetworkDown;+ const ev: *Evented = @ptrCast(@alignCast(userdata));+ var cancel_region: CancelRegion = .init();+ defer cancel_region.deinit();+ var storage: PosixAddress = undefined;+ var addr_len: linux.socklen_t = @sizeOf(PosixAddress);+ const accepted_fd = while (true) {+ const thread = try cancel_region.awaitIoUring();+ thread.enqueue().* = .{+ .opcode = .ACCEPT,+ .flags = 0,+ .ioprio = 0,+ .fd = listen_handle,+ .off = @intFromPtr(&addr_len),+ .addr = @intFromPtr(&storage.any),+ .len = 0,+ .rw_flags = linux.SOCK.CLOEXEC,+ .user_data = @intFromPtr(cancel_region.fiber),+ .buf_index = 0,+ .personality = 0,+ .splice_fd_in = 0,+ .addr3 = 0,+ .resv = 0,+ };+ ev.yield(null, .nothing);+ const completion = cancel_region.completion();+ switch (completion.errno()) {+ .SUCCESS => break completion.result,+ .INTR, .CANCELED => {},+ .AGAIN => unreachable,+ .BADF => |err| return errnoBug(err),+ .CONNABORTED => return error.ConnectionAborted,+ .INVAL => return error.SocketNotListening,+ .NOTSOCK => |err| return errnoBug(err),+ .MFILE => return error.ProcessFdQuotaExceeded,+ .NFILE => return error.SystemFdQuotaExceeded,+ .NOBUFS => return error.SystemResources,+ .NOMEM => return error.SystemResources,+ .OPNOTSUPP => |err| return errnoBug(err),+ .PROTO => return error.ProtocolFailure,+ .PERM => return error.BlockedByFirewall,+ .NETDOWN => return error.NetworkDown,+ else => |err| return unexpectedErrno(err),+ }+ };+ return .{ .handle = accepted_fd, .address = addressFromPosix(&storage) }; } fn netBindIp(@@ -4996,16 +5070,26 @@ return .{ .handle = socket_fd, .address = addressFromPosix(&storage) }; } -fn netConnectIpUnavailable(+fn netConnectIp( userdata: ?*anyopaque, address: *const net.IpAddress, options: net.IpAddress.ConnectOptions, ) net.IpAddress.ConnectError!net.Socket {+ if (options.timeout != .none) @panic("TODO: connect timeout for Io.Uring"); const ev: *Evented = @ptrCast(@alignCast(userdata));- _ = ev;- _ = address;- _ = options;- return error.NetworkDown;+ const family = posixAddressFamily(address);+ var maybe_sync: CancelRegion.Sync.Maybe = .{ .cancel_region = .init() };+ defer maybe_sync.deinit(ev);+ const socket_fd = try ev.socket(&maybe_sync.cancel_region, family, .{+ .mode = options.mode,+ .protocol = options.protocol,+ });+ errdefer ev.closeAsync(socket_fd);+ var storage: PosixAddress = undefined;+ var addr_len = addressToPosix(address, &storage);+ try ev.connect(&maybe_sync.cancel_region, socket_fd, &storage.any, addr_len);+ try ev.getsockname(try maybe_sync.enterSync(ev), socket_fd, &storage.any, &addr_len);+ return .{ .handle = socket_fd, .address = addressFromPosix(&storage) }; } fn netListenUnixUnavailable(@@ -5039,18 +5123,94 @@ return error.OperationUnsupported; } -fn netSendUnavailable(+fn netSend( userdata: ?*anyopaque, handle: net.Socket.Handle, messages: []net.OutgoingMessage, flags: net.SendFlags, ) struct { ?net.Socket.SendError, usize } { const ev: *Evented = @ptrCast(@alignCast(userdata));- _ = ev;- _ = handle;- _ = messages;- _ = flags;- return .{ error.NetworkDown, 0 };+ const posix_flags: u32 =+ @as(u32, if (flags.confirm) linux.MSG.CONFIRM else 0) |+ @as(u32, if (flags.dont_route) linux.MSG.DONTROUTE else 0) |+ @as(u32, if (flags.eor) linux.MSG.EOR else 0) |+ @as(u32, if (flags.oob) linux.MSG.OOB else 0) |+ @as(u32, if (flags.fastopen) linux.MSG.FASTOPEN else 0) |+ linux.MSG.NOSIGNAL;++ for (messages, 0..) |*message, i| {+ ev.netSendOne(handle, message, posix_flags) catch |err| return .{ err, i };+ }+ return .{ null, messages.len };+}++fn netSendOne(+ ev: *Evented,+ handle: net.Socket.Handle,+ message: *net.OutgoingMessage,+ flags: u32,+) net.Socket.SendError!void {+ var addr: PosixAddress = undefined;+ var iov: iovec_const = .{ .base = @constCast(message.data_ptr), .len = message.data_len };+ var msg: linux.msghdr_const = .{+ .name = &addr.any,+ .namelen = addressToPosix(message.address, &addr),+ .iov = (&iov)[0..1],+ .iovlen = 1,+ .control = if (message.control.len == 0) null else @constCast(message.control.ptr),+ .controllen = @intCast(message.control.len),+ .flags = 0,+ };+ var cancel_region: CancelRegion = .init();+ defer cancel_region.deinit();+ while (true) {+ const thread = try cancel_region.awaitIoUring();+ thread.enqueue().* = .{+ .opcode = .SENDMSG,+ .flags = 0,+ .ioprio = 0,+ .fd = handle,+ .off = 0,+ .addr = @intFromPtr(&msg),+ .len = 0,+ .rw_flags = flags,+ .user_data = @intFromPtr(cancel_region.fiber),+ .buf_index = 0,+ .personality = 0,+ .splice_fd_in = 0,+ .addr3 = 0,+ .resv = 0,+ };+ ev.yield(null, .nothing);+ const completion = cancel_region.completion();+ switch (completion.errno()) {+ .SUCCESS => {+ message.data_len = @intCast(completion.result);+ return;+ },+ .INTR, .CANCELED => {},+ .ACCES => return error.AccessDenied,+ .ALREADY => return error.FastOpenAlreadyInProgress,+ .BADF => |err| return errnoBug(err),+ .CONNRESET => return error.ConnectionResetByPeer,+ .DESTADDRREQ => |err| return errnoBug(err),+ .FAULT => |err| return errnoBug(err),+ .INVAL => |err| return errnoBug(err),+ .ISCONN => |err| return errnoBug(err),+ .MSGSIZE => return error.MessageOversize,+ .NOBUFS => return error.SystemResources,+ .NOMEM => return error.SystemResources,+ .NOTSOCK => |err| return errnoBug(err),+ .OPNOTSUPP => |err| return errnoBug(err),+ .PIPE => return error.SocketUnconnected,+ .AFNOSUPPORT => return error.AddressFamilyUnsupported,+ .HOSTUNREACH => return error.HostUnreachable,+ .NETUNREACH => return error.NetworkUnreachable,+ .NOTCONN => return error.SocketUnconnected,+ .NETDOWN => return error.NetworkDown,+ else => |err| return unexpectedErrno(err),+ }+ } } fn netReceive(@@ -5142,19 +5302,67 @@ } } -fn netReadUnavailable(+fn netRead( userdata: ?*anyopaque, fd: net.Socket.Handle, data: [][]u8, ) net.Stream.Reader.Error!usize { const ev: *Evented = @ptrCast(@alignCast(userdata));- _ = ev;- _ = fd;- _ = data;- return error.NetworkDown;+ var iovecs_buffer: [max_iovecs_len]iovec = undefined;+ var i: usize = 0;+ for (data) |buf| {+ if (iovecs_buffer.len - i == 0) break;+ if (buf.len > 0) {+ iovecs_buffer[i] = .{ .base = buf.ptr, .len = buf.len };+ i += 1;+ }+ }+ if (i == 0) return 0;+ const dest = iovecs_buffer[0..i];+ assert(dest[0].len > 0);+ var cancel_region: CancelRegion = .init();+ defer cancel_region.deinit();+ const gather = dest.len > 1 or dest[0].len > 0xfffff000;+ while (true) {+ const thread = try cancel_region.awaitIoUring();+ thread.enqueue().* = .{+ .opcode = if (gather) .READV else .READ,+ .flags = 0,+ .ioprio = 0,+ .fd = fd,+ .off = std.math.maxInt(u64),+ .addr = if (gather) @intFromPtr(dest.ptr) else @intFromPtr(dest[0].base),+ .len = @intCast(if (gather) dest.len else dest[0].len),+ .rw_flags = 0,+ .user_data = @intFromPtr(cancel_region.fiber),+ .buf_index = 0,+ .personality = 0,+ .splice_fd_in = 0,+ .addr3 = 0,+ .resv = 0,+ };+ ev.yield(null, .nothing);+ const completion = cancel_region.completion();+ switch (completion.errno()) {+ .SUCCESS => return @as(u32, @bitCast(completion.result)),+ .INTR, .CANCELED => {},+ .INVAL => |err| return errnoBug(err),+ .FAULT => |err| return errnoBug(err),+ .AGAIN => unreachable,+ .BADF => |err| return errnoBug(err),+ .NOBUFS => return error.SystemResources,+ .NOMEM => return error.SystemResources,+ .NOTCONN => return error.SocketUnconnected,+ .CONNRESET => return error.ConnectionResetByPeer,+ .TIMEDOUT => return error.Timeout,+ .PIPE => return error.SocketUnconnected,+ .NETDOWN => return error.NetworkDown,+ else => |err| return unexpectedErrno(err),+ }+ } } -fn netWriteUnavailable(+fn netWrite( userdata: ?*anyopaque, handle: net.Socket.Handle, header: []const u8,@@ -5162,12 +5370,94 @@ splat: usize, ) net.Stream.Writer.Error!usize { const ev: *Evented = @ptrCast(@alignCast(userdata));- _ = ev;- _ = handle;- _ = header;- _ = data;- _ = splat;- return error.NetworkDown;+ var iovecs: [max_iovecs_len]iovec_const = undefined;+ var iovlen: iovlen_t = 0;+ addBuf(&iovecs, &iovlen, header);+ for (data[0 .. data.len - 1]) |bytes| addBuf(&iovecs, &iovlen, bytes);+ const pattern = data[data.len - 1];+ var backup_buffer: [splat_buffer_size]u8 = undefined;+ if (iovecs.len - iovlen != 0) switch (splat) {+ 0 => {},+ 1 => addBuf(&iovecs, &iovlen, pattern),+ else => switch (pattern.len) {+ 0 => {},+ 1 => {+ const splat_buffer = &backup_buffer;+ const memset_len = @min(splat_buffer.len, splat);+ const buf = splat_buffer[0..memset_len];+ @memset(buf, pattern[0]);+ addBuf(&iovecs, &iovlen, buf);+ var remaining_splat = splat - buf.len;+ while (remaining_splat > splat_buffer.len and iovecs.len - iovlen != 0) {+ assert(buf.len == splat_buffer.len);+ addBuf(&iovecs, &iovlen, splat_buffer);+ remaining_splat -= splat_buffer.len;+ }+ addBuf(&iovecs, &iovlen, splat_buffer[0..@min(remaining_splat, splat_buffer.len)]);+ },+ else => for (0..@min(splat, iovecs.len - iovlen)) |_| {+ addBuf(&iovecs, &iovlen, pattern);+ },+ },+ };+ const iov = iovecs[0..iovlen];+ if (iov.len == 0) return 0;+ var msg: linux.msghdr_const = .{+ .name = null,+ .namelen = 0,+ .iov = iov.ptr,+ .iovlen = iovlen,+ .control = null,+ .controllen = 0,+ .flags = 0,+ };+ var cancel_region: CancelRegion = .init();+ defer cancel_region.deinit();+ while (true) {+ const thread = try cancel_region.awaitIoUring();+ thread.enqueue().* = .{+ .opcode = .SENDMSG,+ .flags = 0,+ .ioprio = 0,+ .fd = handle,+ .off = 0,+ .addr = @intFromPtr(&msg),+ .len = 0,+ .rw_flags = linux.MSG.NOSIGNAL,+ .user_data = @intFromPtr(cancel_region.fiber),+ .buf_index = 0,+ .personality = 0,+ .splice_fd_in = 0,+ .addr3 = 0,+ .resv = 0,+ };+ ev.yield(null, .nothing);+ const completion = cancel_region.completion();+ switch (completion.errno()) {+ .SUCCESS => return @as(u32, @bitCast(completion.result)),+ .INTR, .CANCELED => {},+ .ACCES => |err| return errnoBug(err),+ .AGAIN => unreachable,+ .BADF => |err| return errnoBug(err),+ .DESTADDRREQ => |err| return errnoBug(err),+ .FAULT => |err| return errnoBug(err),+ .INVAL => |err| return errnoBug(err),+ .ISCONN => |err| return errnoBug(err),+ .MSGSIZE => |err| return errnoBug(err),+ .OPNOTSUPP => |err| return errnoBug(err),+ .ALREADY => return error.FastOpenAlreadyInProgress,+ .CONNRESET => return error.ConnectionResetByPeer,+ .NOBUFS => return error.SystemResources,+ .NOMEM => return error.SystemResources,+ .PIPE => return error.SocketUnconnected,+ .NOTCONN => return error.SocketUnconnected,+ .AFNOSUPPORT => return error.AddressFamilyUnsupported,+ .HOSTUNREACH => return error.HostUnreachable,+ .NETUNREACH => return error.NetworkUnreachable,+ .NETDOWN => return error.NetworkDown,+ else => |err| return unexpectedErrno(err),+ }+ } } fn netWriteFileUnavailable(@@ -5306,6 +5596,58 @@ else => |err| return unexpectedErrno(err), } }+}++fn connect(+ ev: *Evented,+ cancel_region: *CancelRegion,+ socket_fd: fd_t,+ addr: *const linux.sockaddr,+ addr_len: linux.socklen_t,+) !void {+ while (true) {+ const thread = try cancel_region.awaitIoUring();+ thread.enqueue().* = .{+ .opcode = .CONNECT,+ .flags = 0,+ .ioprio = 0,+ .fd = socket_fd,+ .off = addr_len,+ .addr = @intFromPtr(addr),+ .len = 0,+ .rw_flags = 0,+ .user_data = @intFromPtr(cancel_region.fiber),+ .buf_index = 0,+ .personality = 0,+ .splice_fd_in = 0,+ .addr3 = 0,+ .resv = 0,+ };+ ev.yield(null, .nothing);+ switch (cancel_region.errno()) {+ .SUCCESS => return,+ .INTR, .CANCELED => {},+ .ADDRNOTAVAIL => return error.AddressUnavailable,+ .AFNOSUPPORT => return error.AddressFamilyUnsupported,+ .AGAIN, .INPROGRESS => return,+ .ALREADY => return error.ConnectionPending,+ .BADF => |err| return errnoBug(err),+ .CONNREFUSED => return error.ConnectionRefused,+ .CONNRESET => return error.ConnectionResetByPeer,+ .FAULT => |err| return errnoBug(err),+ .ISCONN => |err| return errnoBug(err),+ .HOSTUNREACH => return error.HostUnreachable,+ .NETUNREACH => return error.NetworkUnreachable,+ .NOTSOCK => |err| return errnoBug(err),+ .PROTOTYPE => |err| return errnoBug(err),+ .TIMEDOUT => return error.Timeout,+ .CONNABORTED => |err| return errnoBug(err),+ .ACCES => return error.AccessDenied,+ .PERM => |err| return errnoBug(err),+ .NETDOWN => return error.NetworkDown,+ else => |err| return unexpectedErrno(err),+ }+ } } fn chdir(sync: *CancelRegion.Sync, path: [*:0]const u8) ChdirError!void {