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syscall: support for tty options in StartProcess

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These are the relevant changes to exec_unix.go now that
mkerrors.sh outputs have been updated.

R=rsc
CC=golang-dev
https://golang.org/cl/4648064
This commit is contained in:
Ken Rockot 2011-06-27 19:07:49 -04:00 committed by Russ Cox
parent abd50de296
commit 82a8afdf14
1 changed files with 31 additions and 0 deletions
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31
src/pkg/syscall/exec_unix.go
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@ -146,6 +146,14 @@ func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr
}
}
// Set process group
if sys.Setpgid {
_, _, err1 = RawSyscall(SYS_SETPGID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chroot
if chroot != nil {
_, _, err1 = RawSyscall(SYS_CHROOT, uintptr(unsafe.Pointer(chroot)), 0, 0)
@ -241,6 +249,22 @@ func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
}
// Detach fd 0 from tty
if sys.Noctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCNOTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Make fd 0 the tty
if sys.Setctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCSCTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Time to exec.
_, _, err1 = RawSyscall(SYS_EXECVE,
uintptr(unsafe.Pointer(argv0)),
@ -260,12 +284,16 @@ childerror:
panic("unreached")
}
// Credential holds user and group identities to be assumed
// by a child process started by StartProcess.
type Credential struct {
Uid uint32 // User ID.
Gid uint32 // Group ID.
Groups []uint32 // Supplementary group IDs.
}
// ProcAttr holds attributes that will be applied to a new process started
// by StartProcess.
type ProcAttr struct {
Dir string // Current working directory.
Env []string // Environment.
@ -278,6 +306,9 @@ type SysProcAttr struct {
Credential *Credential // Credential.
Ptrace bool // Enable tracing.
Setsid bool // Create session.
Setpgid bool // Set process group ID to new pid (SYSV setpgrp)
Setctty bool // Set controlling terminal to fd 0
Noctty bool // Detach fd 0 from controlling terminal
}
var zeroProcAttr ProcAttr