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Merge pull request #784 from dotcloud/remove_cgo_dependency 

* Runtime: Remove cgo dependency
This commit is contained in:
Guillaume J. Charmes 2013-06-03 07:03:17 -07:00
parent 8243f2510e a70dd65964
commit 2b1b3c1270
4 changed files with 60 additions and 150 deletions
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4
commands.go
View File

@ -1422,7 +1422,7 @@ func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in *os.Fi
return err return err
}) })
if in != nil && setRawTerminal && term.IsTerminal(int(in.Fd())) && os.Getenv("NORAW") == "" { if in != nil && setRawTerminal && term.IsTerminal(in.Fd()) && os.Getenv("NORAW") == "" {
if oldState, err := term.SetRawTerminal(); err != nil { if oldState, err := term.SetRawTerminal(); err != nil {
return err return err
} else { } else {
@ -1441,7 +1441,7 @@ func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in *os.Fi
return err return err
} }
if !term.IsTerminal(int(os.Stdin.Fd())) { if !term.IsTerminal(os.Stdin.Fd()) {
if err := <-sendStdin; err != nil { if err := <-sendStdin; err != nil {
return err return err
} }

112
term/term.go
View File

@ -7,104 +7,6 @@ import (
"unsafe" "unsafe"
) )
type Termios struct {
Iflag uintptr
Oflag uintptr
Cflag uintptr
Lflag uintptr
Cc [20]byte
Ispeed uintptr
Ospeed uintptr
}
const (
// Input flags
inpck = 0x010
istrip = 0x020
icrnl = 0x100
ixon = 0x200
// Output flags
opost = 0x1
// Control flags
cs8 = 0x300
// Local flags
icanon = 0x100
iexten = 0x400
)
const (
HUPCL = 0x4000
ICANON = 0x100
ICRNL = 0x100
IEXTEN = 0x400
BRKINT = 0x2
CFLUSH = 0xf
CLOCAL = 0x8000
CREAD = 0x800
CS5 = 0x0
CS6 = 0x100
CS7 = 0x200
CS8 = 0x300
CSIZE = 0x300
CSTART = 0x11
CSTATUS = 0x14
CSTOP = 0x13
CSTOPB = 0x400
CSUSP = 0x1a
IGNBRK = 0x1
IGNCR = 0x80
IGNPAR = 0x4
IMAXBEL = 0x2000
INLCR = 0x40
INPCK = 0x10
ISIG = 0x80
ISTRIP = 0x20
IUTF8 = 0x4000
IXANY = 0x800
IXOFF = 0x400
IXON = 0x200
NOFLSH = 0x80000000
OCRNL = 0x10
OFDEL = 0x20000
OFILL = 0x80
ONLCR = 0x2
ONLRET = 0x40
ONOCR = 0x20
ONOEOT = 0x8
OPOST = 0x1
RENB = 0x1000
PARMRK = 0x8
PARODD = 0x2000
TOSTOP = 0x400000
VDISCARD = 0xf
VDSUSP = 0xb
VEOF = 0x0
VEOL = 0x1
VEOL2 = 0x2
VERASE = 0x3
VINTR = 0x8
VKILL = 0x5
VLNEXT = 0xe
VMIN = 0x10
VQUIT = 0x9
VREPRINT = 0x6
VSTART = 0xc
VSTATUS = 0x12
VSTOP = 0xd
VSUSP = 0xa
VT0 = 0x0
VT1 = 0x10000
VTDLY = 0x10000
VTIME = 0x11
ECHO = 0x00000008
PENDIN = 0x20000000
)
type State struct { type State struct {
termios Termios termios Termios
} }
@ -128,21 +30,21 @@ func SetWinsize(fd uintptr, ws *Winsize) error {
} }
// IsTerminal returns true if the given file descriptor is a terminal. // IsTerminal returns true if the given file descriptor is a terminal.
func IsTerminal(fd int) bool { func IsTerminal(fd uintptr) bool {
var termios Termios var termios Termios
_, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), uintptr(getTermios), uintptr(unsafe.Pointer(&termios))) _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&termios)))
return err == 0 return err == 0
} }
// Restore restores the terminal connected to the given file descriptor to a // Restore restores the terminal connected to the given file descriptor to a
// previous state. // previous state.
func Restore(fd int, state *State) error { func Restore(fd uintptr, state *State) error {
_, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), uintptr(setTermios), uintptr(unsafe.Pointer(&state.termios))) _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&state.termios)))
return err return err
} }
func SetRawTerminal() (*State, error) { func SetRawTerminal() (*State, error) {
oldState, err := MakeRaw(int(os.Stdin.Fd())) oldState, err := MakeRaw(os.Stdin.Fd())
if err != nil { if err != nil {
return nil, err return nil, err
} }
@ -150,12 +52,12 @@ func SetRawTerminal() (*State, error) {
signal.Notify(c, os.Interrupt) signal.Notify(c, os.Interrupt)
go func() { go func() {
_ = <-c _ = <-c
Restore(int(os.Stdin.Fd()), oldState) Restore(os.Stdin.Fd(), oldState)
os.Exit(0) os.Exit(0)
}() }()
return oldState, err return oldState, err
} }
func RestoreTerminal(state *State) { func RestoreTerminal(state *State) {
Restore(int(os.Stdin.Fd()), state) Restore(os.Stdin.Fd(), state)
} }

32
term/termios_darwin.go
View File

@ -8,23 +8,45 @@ import (
const ( const (
getTermios = syscall.TIOCGETA getTermios = syscall.TIOCGETA
setTermios = syscall.TIOCSETA setTermios = syscall.TIOCSETA
ECHO = 0x00000008
ONLCR = 0x2
ISTRIP = 0x20
INLCR = 0x40
ISIG = 0x80
IGNCR = 0x80
ICANON = 0x100
ICRNL = 0x100
IXOFF = 0x400
IXON = 0x200
) )
type Termios struct {
Iflag uint64
Oflag uint64
Cflag uint64
Lflag uint64
Cc [20]byte
Ispeed uint64
Ospeed uint64
}
// MakeRaw put the terminal connected to the given file descriptor into raw // MakeRaw put the terminal connected to the given file descriptor into raw
// mode and returns the previous state of the terminal so that it can be // mode and returns the previous state of the terminal so that it can be
// restored. // restored.
func MakeRaw(fd int) (*State, error) { func MakeRaw(fd uintptr) (*State, error) {
var oldState State var oldState State
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(getTermios), uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 { if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
return nil, err return nil, err
} }
newState := oldState.termios newState := oldState.termios
newState.Iflag &^= ISTRIP | INLCR | IGNCR | IXON | IXOFF newState.Iflag &^= (ISTRIP | INLCR | IGNCR | IXON | IXOFF)
newState.Iflag |= ICRNL newState.Iflag |= ICRNL
newState.Oflag |= ONLCR newState.Oflag |= ONLCR
newState.Lflag &^= ECHO | ICANON | ISIG newState.Lflag &^= (ECHO | ICANON | ISIG)
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(setTermios), uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&newState))); err != 0 {
return nil, err return nil, err
} }

62
term/termios_linux.go
View File

@ -5,54 +5,40 @@ import (
"unsafe" "unsafe"
) )
// #include <termios.h>
// #include <sys/ioctl.h>
/*
void MakeRaw(int fd) {
struct termios t;
// FIXME: Handle errors?
ioctl(fd, TCGETS, &t);
t.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
t.c_oflag &= ~OPOST;
t.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
t.c_cflag &= ~(CSIZE | PARENB);
t.c_cflag |= CS8;
ioctl(fd, TCSETS, &t);
}
*/
import "C"
const ( const (
getTermios = syscall.TCGETS getTermios = syscall.TCGETS
setTermios = syscall.TCSETS setTermios = syscall.TCSETS
) )
type Termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]byte
Ispeed uint32
Ospeed uint32
}
// MakeRaw put the terminal connected to the given file descriptor into raw // MakeRaw put the terminal connected to the given file descriptor into raw
// mode and returns the previous state of the terminal so that it can be // mode and returns the previous state of the terminal so that it can be
// restored. // restored.
func MakeRaw(fd int) (*State, error) { func MakeRaw(fd uintptr) (*State, error) {
var oldState State var oldState State
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), syscall.TCGETS, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 { if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, getTermios, uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
return nil, err
}
newState := oldState.termios
newState.Iflag &^= (syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON)
newState.Oflag &^= syscall.OPOST
newState.Lflag &^= (syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN)
newState.Cflag &^= (syscall.CSIZE | syscall.PARENB)
newState.Cflag |= syscall.CS8
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(&newState))); err != 0 {
return nil, err return nil, err
} }
C.MakeRaw(C.int(fd))
return &oldState, nil return &oldState, nil
// FIXME: post on goland issues this: very same as the C function bug non-working
// newState := oldState.termios
// newState.Iflag &^= (IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON)
// newState.Oflag &^= OPOST
// newState.Lflag &^= (ECHO | syscall.ECHONL | ICANON | ISIG | IEXTEN)
// newState.Cflag &^= (CSIZE | syscall.PARENB)
// newState.Cflag |= CS8
// if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), syscall.TCSETS, uintptr(unsafe.Pointer(&newState))); err != 0 {
// return nil, err
// }
// return &oldState, nil
} }