sys

Documentation

Overview

Package sys provide convenient wrappers around syscalls.

Index

• func DumpStack() string
• func Fcntl(fd int, cmd int, arg int) (val int, err error)
• func FlushInput(fd int) error
• func GetNonblock(fd int) (bool, error)
• func GetWinsize(fd int) (row, col int)
• func Ioctl(fd int, req int, arg uintptr) error
• func IsATTY(fd int) bool
• func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *syscall.Timeval) error
• func SelectRead(files ...*os.File) (ready []bool, err error)
• func SetNonblock(fd int, nonblock bool) error
• func Tcsetpgrp(fd int, pid int) error
• type FdSet
  • func NewFdSet(fds ...int) *FdSet
  • func (fs *FdSet) Clear(fds ...int)
  • func (fs *FdSet) IsSet(fd int) bool
  • func (fs *FdSet) Set(fds ...int)
  • func (fs *FdSet) Zero()
• type Termios
  • func NewTermiosFromFd(fd int) (*Termios, error)
  • func (term *Termios) ApplyToFd(fd int) error
  • func (term *Termios) Copy() *Termios
  • func (term *Termios) FromFd(fd int) error
  • func (term *Termios) SetEcho(v bool)
  • func (term *Termios) SetICanon(v bool)
  • func (term *Termios) SetVMin(v uint8)
  • func (term *Termios) SetVTime(v uint8)

Functions

func DumpStack

func DumpStack() string

func Fcntl

func Fcntl(fd int, cmd int, arg int) (val int, err error)

func FlushInput

func FlushInput(fd int) error

FlushInput discards data written to a file descriptor but not read.

func GetNonblock

func GetNonblock(fd int) (bool, error)

func GetWinsize

func GetWinsize(fd int) (row, col int)

GetWinsize queries the size of the terminal referenced by the given file descriptor.

func Ioctl

func Ioctl(fd int, req int, arg uintptr) error

Ioctl wraps the ioctl syscall.

func IsATTY

func IsATTY(fd int) bool

func Select

func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *syscall.Timeval) error

func SelectRead

func SelectRead(files ...*os.File) (ready []bool, err error)

SelectRead blocks until any of the given files is ready to be read. It returns a boolean array indicating which files are ready to be read and possible errors.

func SetNonblock

func SetNonblock(fd int, nonblock bool) error

func Tcsetpgrp

func Tcsetpgrp(fd int, pid int) error

Types

type FdSet

type FdSet syscall.FdSet

func NewFdSet

func NewFdSet(fds ...int) *FdSet

func (*FdSet) Clear

func (fs *FdSet) Clear(fds ...int)

func (*FdSet) IsSet

func (fs *FdSet) IsSet(fd int) bool

func (*FdSet) Set

func (fs *FdSet) Set(fds ...int)

func (*FdSet) Zero

func (fs *FdSet) Zero()

type Termios

type Termios C.struct_termios

Termios represents terminal attributes.

func NewTermiosFromFd

func NewTermiosFromFd(fd int) (*Termios, error)

NewTermiosFromFd extracts the terminal attribute of the given file descriptor.

func (*Termios) ApplyToFd

func (term *Termios) ApplyToFd(fd int) error

ApplyToFd applies term to the given file descriptor.

func (*Termios) Copy

func (term *Termios) Copy() *Termios

Copy returns a copy of term.

func (*Termios) FromFd

func (term *Termios) FromFd(fd int) error

FromFd fills term with the terminal attribute of the given file descriptor.

func (*Termios) SetEcho

func (term *Termios) SetEcho(v bool)

SetEcho sets the echo flag.

func (*Termios) SetICanon

func (term *Termios) SetICanon(v bool)

SetICanon sets the canonical flag.

func (*Termios) SetVMin

func (term *Termios) SetVMin(v uint8)

SetVMin sets the minimal number of characters for noncanonical read.

func (*Termios) SetVTime

func (term *Termios) SetVTime(v uint8)

SetVTime sets the timeout in deciseconds for noncanonical read.