1 files changed, 0 insertions, 259 deletions
diff --git a/libgo/go/syscall/exec_darwin.go b/libgo/go/syscall/exec_darwin.go
deleted file mode 100644
index f035d555535..00000000000
--- a/libgo/go/syscall/exec_darwin.go
+++ /dev/null
@@ -1,259 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import (
-	"unsafe"
-)
-
-type SysProcAttr struct {
-	Chroot     string      // Chroot.
-	Credential *Credential // Credential.
-	Ptrace     bool        // Enable tracing.
-	Setsid     bool        // Create session.
-	// Setpgid sets the process group ID of the child to Pgid,
-	// or, if Pgid == 0, to the new child's process ID.
-	Setpgid bool
-	// Setctty sets the controlling terminal of the child to
-	// file descriptor Ctty. Ctty must be a descriptor number
-	// in the child process: an index into ProcAttr.Files.
-	// This is only meaningful if Setsid is true.
-	Setctty bool
-	Noctty  bool // Detach fd 0 from controlling terminal
-	Ctty    int  // Controlling TTY fd
-	// Foreground places the child process group in the foreground.
-	// This implies Setpgid. The Ctty field must be set to
-	// the descriptor of the controlling TTY.
-	// Unlike Setctty, in this case Ctty must be a descriptor
-	// number in the parent process.
-	Foreground bool
-	Pgid       int // Child's process group ID if Setpgid.
-}
-
-// Implemented in runtime package.
-func runtime_BeforeFork()
-func runtime_AfterFork()
-func runtime_AfterForkInChild()
-
-// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
-// If a dup or exec fails, write the errno error to pipe.
-// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
-// In the child, this function must not acquire any locks, because
-// they might have been locked at the time of the fork. This means
-// no rescheduling, no malloc calls, and no new stack segments.
-// For the same reason compiler does not race instrument it.
-// The calls to rawSyscall are okay because they are assembly
-// functions that do not grow the stack.
-//go:norace
-func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr *ProcAttr, sys *SysProcAttr, pipe int) (pid int, err Errno) {
-	// Declare all variables at top in case any
-	// declarations require heap allocation (e.g., err1).
-	var (
-		r1     uintptr
-		err1   Errno
-		nextfd int
-		i      int
-	)
-
-	// guard against side effects of shuffling fds below.
-	// Make sure that nextfd is beyond any currently open files so
-	// that we can't run the risk of overwriting any of them.
-	fd := make([]int, len(attr.Files))
-	nextfd = len(attr.Files)
-	for i, ufd := range attr.Files {
-		if nextfd < int(ufd) {
-			nextfd = int(ufd)
-		}
-		fd[i] = int(ufd)
-	}
-	nextfd++
-
-	// About to call fork.
-	// No more allocation or calls of non-assembly functions.
-	runtime_BeforeFork()
-	r1, _, err1 = rawSyscall(funcPC(libc_fork_trampoline), 0, 0, 0)
-	if err1 != 0 {
-		runtime_AfterFork()
-		return 0, err1
-	}
-
-	if r1 != 0 {
-		// parent; return PID
-		runtime_AfterFork()
-		return int(r1), 0
-	}
-
-	// Fork succeeded, now in child.
-
-	runtime_AfterForkInChild()
-
-	// Enable tracing if requested.
-	if sys.Ptrace {
-		if err := ptrace(PTRACE_TRACEME, 0, 0, 0); err != nil {
-			err1 = err.(Errno)
-			goto childerror
-		}
-	}
-
-	// Session ID
-	if sys.Setsid {
-		_, _, err1 = rawSyscall(funcPC(libc_setsid_trampoline), 0, 0, 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// Set process group
-	if sys.Setpgid || sys.Foreground {
-		// Place child in process group.
-		_, _, err1 = rawSyscall(funcPC(libc_setpgid_trampoline), 0, uintptr(sys.Pgid), 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	if sys.Foreground {
-		pgrp := sys.Pgid
-		if pgrp == 0 {
-			r1, _, err1 = rawSyscall(funcPC(libc_getpid_trampoline), 0, 0, 0)
-			if err1 != 0 {
-				goto childerror
-			}
-
-			pgrp = int(r1)
-		}
-
-		// Place process group in foreground.
-		_, _, err1 = rawSyscall(funcPC(libc_ioctl_trampoline), uintptr(sys.Ctty), uintptr(TIOCSPGRP), uintptr(unsafe.Pointer(&pgrp)))
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// Chroot
-	if chroot != nil {
-		_, _, err1 = rawSyscall(funcPC(libc_chroot_trampoline), uintptr(unsafe.Pointer(chroot)), 0, 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// User and groups
-	if cred := sys.Credential; cred != nil {
-		ngroups := uintptr(len(cred.Groups))
-		groups := uintptr(0)
-		if ngroups > 0 {
-			groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
-		}
-		if !cred.NoSetGroups {
-			_, _, err1 = rawSyscall(funcPC(libc_setgroups_trampoline), ngroups, groups, 0)
-			if err1 != 0 {
-				goto childerror
-			}
-		}
-		_, _, err1 = rawSyscall(funcPC(libc_setgid_trampoline), uintptr(cred.Gid), 0, 0)
-		if err1 != 0 {
-			goto childerror
-		}
-		_, _, err1 = rawSyscall(funcPC(libc_setuid_trampoline), uintptr(cred.Uid), 0, 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// Chdir
-	if dir != nil {
-		_, _, err1 = rawSyscall(funcPC(libc_chdir_trampoline), uintptr(unsafe.Pointer(dir)), 0, 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// Pass 1: look for fd[i] < i and move those up above len(fd)
-	// so that pass 2 won't stomp on an fd it needs later.
-	if pipe < nextfd {
-		_, _, err1 = rawSyscall(funcPC(libc_dup2_trampoline), uintptr(pipe), uintptr(nextfd), 0)
-		if err1 != 0 {
-			goto childerror
-		}
-		rawSyscall(funcPC(libc_fcntl_trampoline), uintptr(nextfd), F_SETFD, FD_CLOEXEC)
-		pipe = nextfd
-		nextfd++
-	}
-	for i = 0; i < len(fd); i++ {
-		if fd[i] >= 0 && fd[i] < int(i) {
-			if nextfd == pipe { // don't stomp on pipe
-				nextfd++
-			}
-			_, _, err1 = rawSyscall(funcPC(libc_dup2_trampoline), uintptr(fd[i]), uintptr(nextfd), 0)
-			if err1 != 0 {
-				goto childerror
-			}
-			rawSyscall(funcPC(libc_fcntl_trampoline), uintptr(nextfd), F_SETFD, FD_CLOEXEC)
-			fd[i] = nextfd
-			nextfd++
-		}
-	}
-
-	// Pass 2: dup fd[i] down onto i.
-	for i = 0; i < len(fd); i++ {
-		if fd[i] == -1 {
-			rawSyscall(funcPC(libc_close_trampoline), uintptr(i), 0, 0)
-			continue
-		}
-		if fd[i] == int(i) {
-			// dup2(i, i) won't clear close-on-exec flag on Linux,
-			// probably not elsewhere either.
-			_, _, err1 = rawSyscall(funcPC(libc_fcntl_trampoline), uintptr(fd[i]), F_SETFD, 0)
-			if err1 != 0 {
-				goto childerror
-			}
-			continue
-		}
-		// The new fd is created NOT close-on-exec,
-		// which is exactly what we want.
-		_, _, err1 = rawSyscall(funcPC(libc_dup2_trampoline), uintptr(fd[i]), uintptr(i), 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// By convention, we don't close-on-exec the fds we are
-	// started with, so if len(fd) < 3, close 0, 1, 2 as needed.
-	// Programs that know they inherit fds >= 3 will need
-	// to set them close-on-exec.
-	for i = len(fd); i < 3; i++ {
-		rawSyscall(funcPC(libc_close_trampoline), uintptr(i), 0, 0)
-	}
-
-	// Detach fd 0 from tty
-	if sys.Noctty {
-		_, _, err1 = rawSyscall(funcPC(libc_ioctl_trampoline), 0, uintptr(TIOCNOTTY), 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// Set the controlling TTY to Ctty
-	if sys.Setctty {
-		_, _, err1 = rawSyscall(funcPC(libc_ioctl_trampoline), uintptr(sys.Ctty), uintptr(TIOCSCTTY), 0)
-		if err1 != 0 {
-			goto childerror
-		}
-	}
-
-	// Time to exec.
-	_, _, err1 = rawSyscall(funcPC(libc_execve_trampoline),
-		uintptr(unsafe.Pointer(argv0)),
-		uintptr(unsafe.Pointer(&argv[0])),
-		uintptr(unsafe.Pointer(&envv[0])))
-
-childerror:
-	// send error code on pipe
-	rawSyscall(funcPC(libc_write_trampoline), uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1))
-	for {
-		rawSyscall(funcPC(libc_exit_trampoline), 253, 0, 0)
-	}
-}