unix

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v0.3.3 Latest Latest
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 Go to latest Published: Jun 6, 2023 License: Apache-2.0 Imports: 16 Imported by: 0

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Variables

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Functions

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Types

type PathOpenSockets 

type PathOpenSockets struct{ wasi.System }

PathOpenSockets is an extension to WASI preview 1 that adds the ability to create TCP sockets. It works by proxying calls to path_open. If fd<0 and the path is of the form: 

<network>:<operation>://<host>:<port>[?options=value[&option=value]*

where network is one of "tcp", "tcp4" or "tcp6", and operation is either "listen" or "dial", the extension will open a socket that either listens on, or connects to, the specified host:port address. Otherwise, the extension passes the arguments to the underlying WASI implementation to open a file or directory as normal.

The following options are available - nonblock=<0|1>: Open the socket in non-blocking mode. Default is 1. - nodelay=<0|1>: Set TCP_NODELAY. Default is 1. - reuseaddr=<0|1>: Set SO_REUSEADDR. Default is 1. - backlog=<N>: Set the listen(2) backlog. Default is 128.

func (*PathOpenSockets) PathOpen 

func (p *PathOpenSockets) PathOpen(ctx context.Context, fd wasi.FD, lookupFlags wasi.LookupFlags, path string, openFlags wasi.OpenFlags, rightsBase, rightsInheriting wasi.Rights, fdFlags wasi.FDFlags) (wasi.FD, wasi.Errno)

type System 

type System struct {
	// Args are the environment variables accessible via ArgsGet.
	Args []string

	// Environ is the environment variables accessible via EnvironGet.
	Environ []string

	// Realtime returns the realtime clock value.
	Realtime          func(context.Context) (uint64, error)
	RealtimePrecision time.Duration

	// Monotonic returns the monotonic clock value.
	Monotonic          func(context.Context) (uint64, error)
	MonotonicPrecision time.Duration

	// Yield is called when SchedYield is called. If Yield is nil,
	// SchedYield is a noop.
	Yield func(context.Context) error

	// Exit is called with an exit code when ProcExit is called.
	// If Exit is nil, ProcExit is a noop.
	Exit func(context.Context, int) error

	// Raise is called with a signal when ProcRaise is called.
	// If Raise is nil, ProcRaise is a noop.
	Raise func(context.Context, int) error

	// Rand is the source for RandomGet.
	Rand io.Reader
	// contains filtered or unexported fields
}

System is a WASI preview 1 implementation for Unix.

It implements the wasi.System and wasi.SocketsExtension interfaces.

An instance of System is not safe for concurrent use.

func (*System) ArgsGet 

func (s *System) ArgsGet(ctx context.Context) ([]string, wasi.Errno)

func (*System) ArgsSizesGet 

func (s *System) ArgsSizesGet(ctx context.Context) (argCount, stringBytes int, errno wasi.Errno)

func (*System) ClockResGet 

func (s *System) ClockResGet(ctx context.Context, id wasi.ClockID) (wasi.Timestamp, wasi.Errno)

func (*System) ClockTimeGet 

func (s *System) ClockTimeGet(ctx context.Context, id wasi.ClockID, precision wasi.Timestamp) (wasi.Timestamp, wasi.Errno)

func (*System) Close 

func (s *System) Close(ctx context.Context) error

func (*System) EnvironGet 

func (s *System) EnvironGet(ctx context.Context) ([]string, wasi.Errno)

func (*System) EnvironSizesGet 

func (s *System) EnvironSizesGet(ctx context.Context) (envCount, stringBytes int, errno wasi.Errno)

func (*System) FDAdvise 

func (s *System) FDAdvise(ctx context.Context, fd wasi.FD, offset wasi.FileSize, length wasi.FileSize, advice wasi.Advice) wasi.Errno

func (*System) FDAllocate 

func (s *System) FDAllocate(ctx context.Context, fd wasi.FD, offset wasi.FileSize, length wasi.FileSize) wasi.Errno

func (*System) FDClose 

func (s *System) FDClose(ctx context.Context, fd wasi.FD) wasi.Errno

func (*System) FDDataSync 

func (s *System) FDDataSync(ctx context.Context, fd wasi.FD) wasi.Errno

func (*System) FDFileStatGet 

func (s *System) FDFileStatGet(ctx context.Context, fd wasi.FD) (wasi.FileStat, wasi.Errno)

func (*System) FDFileStatSetSize 

func (s *System) FDFileStatSetSize(ctx context.Context, fd wasi.FD, size wasi.FileSize) wasi.Errno

func (*System) FDFileStatSetTimes 

func (s *System) FDFileStatSetTimes(ctx context.Context, fd wasi.FD, accessTime, modifyTime wasi.Timestamp, flags wasi.FSTFlags) wasi.Errno

func (*System) FDPreStatDirName 

func (s *System) FDPreStatDirName(ctx context.Context, fd wasi.FD) (string, wasi.Errno)

func (*System) FDPreStatGet 

func (s *System) FDPreStatGet(ctx context.Context, fd wasi.FD) (wasi.PreStat, wasi.Errno)

func (*System) FDPread 

func (s *System) FDPread(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec, offset wasi.FileSize) (wasi.Size, wasi.Errno)

func (*System) FDPwrite 

func (s *System) FDPwrite(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec, offset wasi.FileSize) (wasi.Size, wasi.Errno)

func (*System) FDRead 

func (s *System) FDRead(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec) (wasi.Size, wasi.Errno)

func (*System) FDReadDir 

func (s *System) FDReadDir(ctx context.Context, fd wasi.FD, entries []wasi.DirEntry, cookie wasi.DirCookie, bufferSizeBytes int) (int, wasi.Errno)

func (*System) FDRenumber 

func (s *System) FDRenumber(ctx context.Context, from, to wasi.FD) wasi.Errno

func (*System) FDSeek 

func (s *System) FDSeek(ctx context.Context, fd wasi.FD, delta wasi.FileDelta, whence wasi.Whence) (wasi.FileSize, wasi.Errno)

func (*System) FDStatGet 

func (s *System) FDStatGet(ctx context.Context, fd wasi.FD) (wasi.FDStat, wasi.Errno)

func (*System) FDStatSetFlags 

func (s *System) FDStatSetFlags(ctx context.Context, fd wasi.FD, flags wasi.FDFlags) wasi.Errno

func (*System) FDStatSetRights 

func (s *System) FDStatSetRights(ctx context.Context, fd wasi.FD, rightsBase, rightsInheriting wasi.Rights) wasi.Errno

func (*System) FDSync 

func (s *System) FDSync(ctx context.Context, fd wasi.FD) wasi.Errno

func (*System) FDTell 

func (s *System) FDTell(ctx context.Context, fd wasi.FD) (wasi.FileSize, wasi.Errno)

func (*System) FDWrite 

func (s *System) FDWrite(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec) (wasi.Size, wasi.Errno)

func (*System) PathCreateDirectory 

func (s *System) PathCreateDirectory(ctx context.Context, fd wasi.FD, path string) wasi.Errno

func (*System) PathFileStatGet 

func (s *System) PathFileStatGet(ctx context.Context, fd wasi.FD, flags wasi.LookupFlags, path string) (wasi.FileStat, wasi.Errno)

func (*System) PathFileStatSetTimes 

func (s *System) PathFileStatSetTimes(ctx context.Context, fd wasi.FD, lookupFlags wasi.LookupFlags, path string, accessTime, modifyTime wasi.Timestamp, fstFlags wasi.FSTFlags) wasi.Errno
func (s *System) PathLink(ctx context.Context, fd wasi.FD, flags wasi.LookupFlags, oldPath string, newFD wasi.FD, newPath string) wasi.Errno

func (*System) PathOpen 

func (s *System) PathOpen(ctx context.Context, fd wasi.FD, lookupFlags wasi.LookupFlags, path string, openFlags wasi.OpenFlags, rightsBase, rightsInheriting wasi.Rights, fdFlags wasi.FDFlags) (wasi.FD, wasi.Errno)
func (s *System) PathReadLink(ctx context.Context, fd wasi.FD, path string, buffer []byte) ([]byte, wasi.Errno)

func (*System) PathRemoveDirectory 

func (s *System) PathRemoveDirectory(ctx context.Context, fd wasi.FD, path string) wasi.Errno

func (*System) PathRename 

func (s *System) PathRename(ctx context.Context, fd wasi.FD, oldPath string, newFD wasi.FD, newPath string) wasi.Errno
func (s *System) PathSymlink(ctx context.Context, oldPath string, fd wasi.FD, newPath string) wasi.Errno

func (*System) PathUnlinkFile 

func (s *System) PathUnlinkFile(ctx context.Context, fd wasi.FD, path string) wasi.Errno

func (*System) PollOneOff 

func (s *System) PollOneOff(ctx context.Context, subscriptions []wasi.Subscription, events []wasi.Event) (int, wasi.Errno)

func (*System) Preopen 

func (s *System) Preopen(hostfd int, path string, fdstat wasi.FDStat) wasi.FD

Preopen adds an open file to the list of pre-opens.

func (*System) ProcExit 

func (s *System) ProcExit(ctx context.Context, code wasi.ExitCode) wasi.Errno

func (*System) ProcRaise 

func (s *System) ProcRaise(ctx context.Context, signal wasi.Signal) wasi.Errno

func (*System) RandomGet 

func (s *System) RandomGet(ctx context.Context, b []byte) wasi.Errno

func (*System) Register 

func (s *System) Register(hostfd int, fdstat wasi.FDStat) wasi.FD

func (*System) SchedYield 

func (s *System) SchedYield(ctx context.Context) wasi.Errno

func (*System) Shutdown 

func (s *System) Shutdown(ctx context.Context) error

Shutdown may be called to asynchronously cancel all blocking operations on the system, causing calls such as PollOneOff to unblock and return an error indicating that the system is shutting down.

func (*System) SockAccept 

func (s *System) SockAccept(ctx context.Context, fd wasi.FD, flags wasi.FDFlags) (wasi.FD, wasi.SocketAddress, wasi.SocketAddress, wasi.Errno)

func (*System) SockBind 

func (s *System) SockBind(ctx context.Context, fd wasi.FD, addr wasi.SocketAddress) (wasi.SocketAddress, wasi.Errno)

func (*System) SockConnect 

func (s *System) SockConnect(ctx context.Context, fd wasi.FD, peer wasi.SocketAddress) (wasi.SocketAddress, wasi.Errno)

func (*System) SockGetOptInt 

func (s *System) SockGetOptInt(ctx context.Context, fd wasi.FD, level wasi.SocketOptionLevel, option wasi.SocketOption) (int, wasi.Errno)

func (*System) SockListen 

func (s *System) SockListen(ctx context.Context, fd wasi.FD, backlog int) wasi.Errno

func (*System) SockLocalAddress 

func (s *System) SockLocalAddress(ctx context.Context, fd wasi.FD) (wasi.SocketAddress, wasi.Errno)

func (*System) SockOpen 

func (s *System) SockOpen(ctx context.Context, pf wasi.ProtocolFamily, socketType wasi.SocketType, protocol wasi.Protocol, rightsBase, rightsInheriting wasi.Rights) (wasi.FD, wasi.Errno)

func (*System) SockRecv 

func (s *System) SockRecv(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec, flags wasi.RIFlags) (wasi.Size, wasi.ROFlags, wasi.Errno)

func (*System) SockRecvFrom 

func (s *System) SockRecvFrom(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec, flags wasi.RIFlags) (wasi.Size, wasi.ROFlags, wasi.SocketAddress, wasi.Errno)

func (*System) SockRemoteAddress added in v0.3.2 

func (s *System) SockRemoteAddress(ctx context.Context, fd wasi.FD) (wasi.SocketAddress, wasi.Errno)

func (*System) SockSend 

func (s *System) SockSend(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec, flags wasi.SIFlags) (wasi.Size, wasi.Errno)

func (*System) SockSendTo 

func (s *System) SockSendTo(ctx context.Context, fd wasi.FD, iovecs []wasi.IOVec, flags wasi.SIFlags, addr wasi.SocketAddress) (wasi.Size, wasi.Errno)

func (*System) SockSetOptInt 

func (s *System) SockSetOptInt(ctx context.Context, fd wasi.FD, level wasi.SocketOptionLevel, option wasi.SocketOption, value int) wasi.Errno

func (*System) SockShutdown 

func (s *System) SockShutdown(ctx context.Context, fd wasi.FD, flags wasi.SDFlags) wasi.Errno

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