file.  Sigh.
*/

package runtime

/*
#cgo CFLAGS: -I/tmp/linux/arch/x86/include -I/tmp/linux/include -D_LOOSE_KERNEL_NAMES -D__ARCH_SI_UID_T=__kernel_uid32_t

#define size_t __kernel_size_t
#define pid_t int
#include <asm/signal.h>
#include <asm/mman.h>
#include <asm/sigcontext.h>
#include <asm/ucontext.h>
#include <asm/siginfo.h>
#include <asm-generic/errno.h>
#include <asm-generic/fcntl.h>

type Timeval C.struct_timeval

type Timeval32 C.struct_timeval32

// Processes

type Rusage C.struct_rusage

type Rlimit C.struct_rlimit

type _Pid_t C.pid_t

type _Gid_t C.gid_t

// Files

const ( // Directory mode bits
	S_IFMT   = C.S_IFMT
	S_IFIFO  = C.S_IFIFO
	S_IFCHR  = C.S_IFCHR
	S_IFDIR  = C.S_IFDIR
	S_IFBLK  = C.S_IFBLK
	S_IFREG  = C.S_IFREG

                    return 1;
                } else {
                    pid = atoi(argv[1]);
                }
                pid_t getsid(pid_t pid);
                sid = getsid(pid);
                printf("%d\\n", sid);
                return 0;
            }
        """)
    }

    void withProject(exeName, source) {

	Nswap    int64
	Inblock  int64
	Oublock  int64
	Msgsnd   int64
	Msgrcv   int64
	Nsignals int64
	Nvcsw    int64
	Nivcsw   int64
}

type Rlimit struct {
	Cur uint64
	Max uint64
}

type Pid_t int32

type _Gid_t uint32

type dev_t uint64

type Stat_t struct {
	Dev      uint64
	Ino      uint64
	Mode     uint32
	Nlink    int16
	Flag     uint16
	Uid      uint32
	Gid      uint32

		pgrp := int32(syscall.Getpgrp()) // assume that pid_t is int32
		if err := unix.Tcsetpgrp(ptyFD, pgrp); err != nil {
			return fmt.Errorf("error setting tty process group: %w", err)
		}

		// Give the kernel time to potentially wake readers and have
		// them return EINTR (darwin does this).
		time.Sleep(pause)

		// Give TTY back.
		pid := int32(cmd.Process.Pid) // assume that pid_t is int32

	Nswap    int32
	Inblock  int32
	Oublock  int32
	Msgsnd   int32
	Msgrcv   int32
	Nsignals int32
	Nvcsw    int32
	Nivcsw   int32
}

type Rlimit struct {
	Cur uint64
	Max uint64
}

type Pid_t int32

type _Gid_t uint32

type dev_t uint32

type Stat_t struct {
	Dev      uint32
	Ino      uint32
	Mode     uint32
	Nlink    int16
	Flag     uint16
	Uid      uint32
	Gid      uint32

	childTID   uint64 // Where to store child TID, in child's memory (pid_t *)
	parentTID  uint64 // Where to store child TID, in parent's memory (pid_t *)
	exitSignal uint64 // Signal to deliver to parent on child termination
	stack      uint64 // Pointer to lowest byte of stack
	stackSize  uint64 // Size of stack
	tls        uint64 // Location of new TLS
	setTID     uint64 // Pointer to a pid_t array (since Linux 5.5)

		// Place child in process group.
		_, _, err1 = RawSyscall(SYS_SETPGID, 0, uintptr(sys.Pgid), 0)
		if err1 != 0 {
			goto childerror
		}
	}

	if sys.Foreground {
		// This should really be pid_t, however _C_int (aka int32) is
		// generally equivalent.
		pgrp = _C_int(sys.Pgid)
		if pgrp == 0 {
			r1, _, err1 = RawSyscall(SYS_GETPID, 0, 0, 0)
			if err1 != 0 {
				goto childerror
			}

		// Place child in process group.
		_, _, err1 = RawSyscall(SYS_SETPGID, 0, uintptr(sys.Pgid), 0)
		if err1 != 0 {
			goto childerror
		}
	}

	if sys.Foreground {
		// This should really be pid_t, however _C_int (aka int32) is
		// generally equivalent.
		pgrp = _C_int(sys.Pgid)
		if pgrp == 0 {
			r1, _, err1 = RawSyscall(SYS_GETPID, 0, 0, 0)
			if err1 != 0 {
				goto childerror
			}

		_, _, err1 = rawSyscall(abi.FuncPCABI0(libc_setpgid_trampoline), 0, uintptr(sys.Pgid), 0)
		if err1 != 0 {
			goto childerror
		}
	}

	if sys.Foreground {
		// This should really be pid_t, however _C_int (aka int32) is
		// generally equivalent.
		pgrp = _C_int(sys.Pgid)
		if pgrp == 0 {
			r1, _, err1 = rawSyscall(abi.FuncPCABI0(libc_getpid_trampoline), 0, 0, 0)
			if err1 != 0 {
				goto childerror