source: code/trunk/vendor/modernc.org/libc/libc_darwin.go@ 822

// Copyright 2020 The Libc 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 libc // import "modernc.org/libc"

import (
        crand "crypto/rand"
        "encoding/hex"
        "fmt"
        "io"
        "os"
        "os/exec"
        gosignal "os/signal"
        "path/filepath"
        "runtime"
        "strings"
        "syscall"
        gotime "time"
        "unicode"
        "unsafe"

        guuid "github.com/google/uuid"
        "golang.org/x/sys/unix"
        "modernc.org/libc/errno"
        "modernc.org/libc/fcntl"
        "modernc.org/libc/fts"
        gonetdb "modernc.org/libc/honnef.co/go/netdb"
        "modernc.org/libc/langinfo"
        "modernc.org/libc/limits"
        "modernc.org/libc/netdb"
        "modernc.org/libc/netinet/in"
        "modernc.org/libc/signal"
        "modernc.org/libc/stdio"
        "modernc.org/libc/sys/socket"
        "modernc.org/libc/sys/stat"
        "modernc.org/libc/sys/types"
        "modernc.org/libc/termios"
        "modernc.org/libc/time"
        "modernc.org/libc/unistd"
        "modernc.org/libc/uuid/uuid"
        "modernc.org/libc/wctype"
)

const (
        maxPathLen = 1024
)

// var (
//      in6_addr_any in.In6_addr
// )

type (
        long  = types.User_long_t
        ulong = types.User_ulong_t
)

// // Keep these outside of the var block otherwise go generate will miss them.
var X__stderrp = Xstdout
var X__stdinp = Xstdin
var X__stdoutp = Xstdout

// user@darwin-m1:~/tmp$ cat main.c
//
//      #include <xlocale.h>
//      #include <stdio.h>
//
//      int main() {
//              printf("%i\n", ___mb_cur_max());
//              return 0;
//      }
//
// user@darwin-m1:~/tmp$ gcc main.c && ./a.out
// 1
// user@darwin-m1:~/tmp$
var X__mb_cur_max int32 = 1

var startTime = gotime.Now() // For clock(3)

type file uintptr

func (f file) fd() int32      { return int32((*stdio.FILE)(unsafe.Pointer(f)).F_file) }
func (f file) setFd(fd int32) { (*stdio.FILE)(unsafe.Pointer(f)).F_file = int16(fd) }

func (f file) err() bool {
        return (*stdio.FILE)(unsafe.Pointer(f)).F_flags&1 != 0
}

func (f file) setErr() {
        (*stdio.FILE)(unsafe.Pointer(f)).F_flags |= 1
}

func (f file) close(t *TLS) int32 {
        r := Xclose(t, f.fd())
        Xfree(t, uintptr(f))
        if r < 0 {
                return stdio.EOF
        }

        return 0
}

func newFile(t *TLS, fd int32) uintptr {
        p := Xcalloc(t, 1, types.Size_t(unsafe.Sizeof(stdio.FILE{})))
        if p == 0 {
                return 0
        }

        file(p).setFd(fd)
        return p
}

func fwrite(fd int32, b []byte) (int, error) {
        if fd == unistd.STDOUT_FILENO {
                return write(b)
        }

        if dmesgs {
                dmesg("%v: fd %v: %s", origin(1), fd, hex.Dump(b))
        }
        return unix.Write(int(fd), b)
}

func X__inline_isnand(t *TLS, x float64) int32 { return Xisnan(t, x) }
func X__inline_isnanf(t *TLS, x float32) int32 { return Xisnanf(t, x) }
func X__inline_isnanl(t *TLS, x float64) int32 { return Xisnan(t, x) }

// int fprintf(FILE *stream, const char *format, ...);
func Xfprintf(t *TLS, stream, format, args uintptr) int32 {
        n, _ := fwrite(int32((*stdio.FILE)(unsafe.Pointer(stream)).F_file), printf(format, args))
        return int32(n)
}

// int usleep(useconds_t usec);
func Xusleep(t *TLS, usec types.Useconds_t) int32 {
        gotime.Sleep(gotime.Microsecond * gotime.Duration(usec))
        return 0
}

// int futimes(int fd, const struct timeval tv[2]);
func Xfutimes(t *TLS, fd int32, tv uintptr) int32 {
        var a []unix.Timeval
        if tv != 0 {
                a = make([]unix.Timeval, 2)
                a[0] = *(*unix.Timeval)(unsafe.Pointer(tv))
                a[1] = *(*unix.Timeval)(unsafe.Pointer(tv + unsafe.Sizeof(unix.Timeval{})))
        }
        if err := unix.Futimes(int(fd), a); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// void srandomdev(void);
func Xsrandomdev(t *TLS) {
        panic(todo(""))
}

// int gethostuuid(uuid_t id, const struct timespec *wait);
func Xgethostuuid(t *TLS, id uintptr, wait uintptr) int32 {
        if _, _, err := unix.Syscall(unix.SYS_GETHOSTUUID, id, wait, 0); err != 0 { // Cannot avoid the syscall here.
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// int flock(int fd, int operation);
func Xflock(t *TLS, fd, operation int32) int32 {
        if err := unix.Flock(int(fd), int(operation)); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// int fsctl(const char *,unsigned long,void*,unsigned int);
func Xfsctl(t *TLS, path uintptr, request ulong, data uintptr, options uint32) int32 {
        panic(todo(""))
        // if _, _, err := unix.Syscall6(unix.SYS_FSCTL, path, uintptr(request), data, uintptr(options), 0, 0); err != 0 {
        //      t.setErrno(err)
        //      return -1
        // }

        // return 0
}

// int * __error(void);
func X__error(t *TLS) uintptr {
        return t.errnop
}

// int isspace(int c);
func Xisspace(t *TLS, c int32) int32 {
        return __isspace(t, c)
}

// void __assert_rtn(const char *, const char *, int, const char *)
func X__assert_rtn(t *TLS, function, file uintptr, line int32, assertion uintptr) {
        panic(todo(""))
        // fmt.Fprintf(os.Stderr, "assertion failure: %s:%d.%s: %s\n", GoString(file), line, GoString(function), GoString(assertion))
        // os.Stderr.Sync()
        // Xexit(t, 1)
}

// int getrusage(int who, struct rusage *usage);
func Xgetrusage(t *TLS, who int32, usage uintptr) int32 {
        panic(todo(""))
        // if _, _, err := unix.Syscall(unix.SYS_GETRUSAGE, uintptr(who), usage, 0); err != 0 {
        //      t.setErrno(err)
        //      return -1
        // }

        // return 0
}

// int fgetc(FILE *stream);
func Xfgetc(t *TLS, stream uintptr) int32 {
        fd := int((*stdio.FILE)(unsafe.Pointer(stream)).F_file)
        var buf [1]byte
        if n, _ := unix.Read(fd, buf[:]); n != 0 {
                return int32(buf[0])
        }

        return stdio.EOF
}

// int lstat(const char *pathname, struct stat *statbuf);
func Xlstat(t *TLS, pathname, statbuf uintptr) int32 {
        return Xlstat64(t, pathname, statbuf)
}

// int stat(const char *pathname, struct stat *statbuf);
func Xstat(t *TLS, pathname, statbuf uintptr) int32 {
        return Xstat64(t, pathname, statbuf)
}

// int chdir(const char *path);
func Xchdir(t *TLS, path uintptr) int32 {
        if err := unix.Chdir(GoString(path)); err != nil {
                if dmesgs {
                        dmesg("%v: %q: %v FAIL", origin(1), GoString(path), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: %q: ok", origin(1), GoString(path))
        }
        return 0
}

var localtime time.Tm

// struct tm *localtime(const time_t *timep);
func Xlocaltime(_ *TLS, timep uintptr) uintptr {
        loc := gotime.Local
        if r := getenv(Environ(), "TZ"); r != 0 {
                zone, off := parseZone(GoString(r))
                loc = gotime.FixedZone(zone, -off)
        }
        ut := *(*time.Time_t)(unsafe.Pointer(timep))
        t := gotime.Unix(int64(ut), 0).In(loc)
        localtime.Ftm_sec = int32(t.Second())
        localtime.Ftm_min = int32(t.Minute())
        localtime.Ftm_hour = int32(t.Hour())
        localtime.Ftm_mday = int32(t.Day())
        localtime.Ftm_mon = int32(t.Month() - 1)
        localtime.Ftm_year = int32(t.Year() - 1900)
        localtime.Ftm_wday = int32(t.Weekday())
        localtime.Ftm_yday = int32(t.YearDay())
        localtime.Ftm_isdst = Bool32(isTimeDST(t))
        return uintptr(unsafe.Pointer(&localtime))
}

// struct tm *localtime_r(const time_t *timep, struct tm *result);
func Xlocaltime_r(_ *TLS, timep, result uintptr) uintptr {
        loc := gotime.Local
        if r := getenv(Environ(), "TZ"); r != 0 {
                zone, off := parseZone(GoString(r))
                loc = gotime.FixedZone(zone, -off)
        }
        ut := *(*time_t)(unsafe.Pointer(timep))
        t := gotime.Unix(int64(ut), 0).In(loc)
        (*time.Tm)(unsafe.Pointer(result)).Ftm_sec = int32(t.Second())
        (*time.Tm)(unsafe.Pointer(result)).Ftm_min = int32(t.Minute())
        (*time.Tm)(unsafe.Pointer(result)).Ftm_hour = int32(t.Hour())
        (*time.Tm)(unsafe.Pointer(result)).Ftm_mday = int32(t.Day())
        (*time.Tm)(unsafe.Pointer(result)).Ftm_mon = int32(t.Month() - 1)
        (*time.Tm)(unsafe.Pointer(result)).Ftm_year = int32(t.Year() - 1900)
        (*time.Tm)(unsafe.Pointer(result)).Ftm_wday = int32(t.Weekday())
        (*time.Tm)(unsafe.Pointer(result)).Ftm_yday = int32(t.YearDay())
        (*time.Tm)(unsafe.Pointer(result)).Ftm_isdst = Bool32(isTimeDST(t))
        return result
}

// int open(const char *pathname, int flags, ...);
func Xopen(t *TLS, pathname uintptr, flags int32, args uintptr) int32 {
        var mode types.Mode_t
        if args != 0 {
                mode = (types.Mode_t)(VaUint32(&args))
        }
        fd, err := unix.Open(GoString(pathname), int(flags), uint32(mode))
        if err != nil {
                if dmesgs {
                        dmesg("%v: %q %#x %#o: %v FAIL", origin(1), GoString(pathname), flags, mode, err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: %q flags %#x mode %#o: fd %v", origin(1), GoString(pathname), flags, mode, fd)
        }
        return int32(fd)
}

// off_t lseek(int fd, off_t offset, int whence);
func Xlseek(t *TLS, fd int32, offset types.Off_t, whence int32) types.Off_t {
        return types.Off_t(Xlseek64(t, fd, offset, whence))
}

func whenceStr(whence int32) string {
        switch whence {
        case fcntl.SEEK_CUR:
                return "SEEK_CUR"
        case fcntl.SEEK_END:
                return "SEEK_END"
        case fcntl.SEEK_SET:
                return "SEEK_SET"
        default:
                return fmt.Sprintf("whence(%d)", whence)
        }
}

var fsyncStatbuf stat.Stat

// int fsync(int fd);
func Xfsync(t *TLS, fd int32) int32 {
        if noFsync {
                // Simulate -DSQLITE_NO_SYNC for sqlite3 testfixture, see function full_sync in sqlite3.c
                return Xfstat(t, fd, uintptr(unsafe.Pointer(&fsyncStatbuf)))
        }

        if err := unix.Fsync(int(fd)); err != nil {
                if dmesgs {
                        dmesg("%v: %v: %v FAIL", origin(1), fd, err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: %d: ok", origin(1), fd)
        }
        return 0
}

// long sysconf(int name);
func Xsysconf(t *TLS, name int32) long {
        switch name {
        case unistd.X_SC_PAGESIZE:
                return long(unix.Getpagesize())
        case unistd.X_SC_NPROCESSORS_ONLN:
                return long(runtime.NumCPU())
        }

        panic(todo(""))
}

// int close(int fd);
func Xclose(t *TLS, fd int32) int32 {
        if err := unix.Close(int(fd)); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: %d: ok", origin(1), fd)
        }
        return 0
}

// char *getcwd(char *buf, size_t size);
func Xgetcwd(t *TLS, buf uintptr, size types.Size_t) uintptr {
        if _, err := unix.Getcwd((*RawMem)(unsafe.Pointer(buf))[:size:size]); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return 0
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return buf
}

// int fstat(int fd, struct stat *statbuf);
func Xfstat(t *TLS, fd int32, statbuf uintptr) int32 {
        return Xfstat64(t, fd, statbuf)
}

// int ftruncate(int fd, off_t length);
func Xftruncate(t *TLS, fd int32, length types.Off_t) int32 {
        if err := unix.Ftruncate(int(fd), int64(length)); err != nil {
                if dmesgs {
                        dmesg("%v: fd %d: %v FAIL", origin(1), fd, err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: %d %#x: ok", origin(1), fd, length)
        }
        return 0
}

// int fcntl(int fd, int cmd, ... /* arg */ );
func Xfcntl(t *TLS, fd, cmd int32, args uintptr) int32 {
        return Xfcntl64(t, fd, cmd, args)
}

// ssize_t read(int fd, void *buf, size_t count);
func Xread(t *TLS, fd int32, buf uintptr, count types.Size_t) types.Ssize_t {
        var n int
        var err error
        switch {
        case count == 0:
                n, err = unix.Read(int(fd), nil)
        default:
                n, err = unix.Read(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count])
                if dmesgs && err == nil {
                        dmesg("%v: fd %v, count %#x, n %#x\n%s", origin(1), fd, count, n, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:n:n]))
                }
        }
        if err != nil {
                if dmesgs {
                        dmesg("%v: fd %v, %v FAIL", origin(1), fd, err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Ssize_t(n)
}

// ssize_t write(int fd, const void *buf, size_t count);
func Xwrite(t *TLS, fd int32, buf uintptr, count types.Size_t) types.Ssize_t {
        var n int
        var err error
        switch {
        case count == 0:
                n, err = unix.Write(int(fd), nil)
        default:
                n, err = unix.Write(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count])
                if dmesgs {
                        dmesg("%v: fd %v, count %#x\n%s", origin(1), fd, count, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:count:count]))
                }
        }
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Ssize_t(n)
}

// int fchmod(int fd, mode_t mode);
func Xfchmod(t *TLS, fd int32, mode types.Mode_t) int32 {
        if err := unix.Fchmod(int(fd), uint32(mode)); err != nil {
                if dmesgs {
                        dmesg("%v: %d %#o: %v FAIL", origin(1), fd, mode, err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: %d %#o: ok", origin(1), fd, mode)
        }
        return 0
}

// int fchown(int fd, uid_t owner, gid_t group);
func Xfchown(t *TLS, fd int32, owner types.Uid_t, group types.Gid_t) int32 {
        if _, _, err := unix.Syscall(unix.SYS_FCHOWN, uintptr(fd), uintptr(owner), uintptr(group)); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// uid_t geteuid(void);
func Xgeteuid(t *TLS) types.Uid_t {
        r := types.Uid_t(unix.Geteuid())
        if dmesgs {
                dmesg("%v: %v", origin(1), r)
        }
        return r
}

// void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
func Xmmap(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
        // Cannot avoid the syscall here, addr sometimes matter.
        data, _, err := unix.Syscall6(unix.SYS_MMAP, addr, uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset))
        if err != 0 {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return ^uintptr(0) // (void*)-1
        }

        if dmesgs {
                dmesg("%v: %#x", origin(1), data)
        }
        return data
}

// int munmap(void *addr, size_t length);
func Xmunmap(t *TLS, addr uintptr, length types.Size_t) int32 {
        if _, _, err := unix.Syscall(unix.SYS_MUNMAP, addr, uintptr(length), 0); err != 0 { // Cannot avoid the syscall here, must pair with mmap.
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        return 0
}

// int gettimeofday(struct timeval *tv, struct timezone *tz);
func Xgettimeofday(t *TLS, tv, tz uintptr) int32 {
        if tz != 0 {
                panic(todo(""))
        }

        var tvs unix.Timeval
        err := unix.Gettimeofday(&tvs)
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        *(*unix.Timeval)(unsafe.Pointer(tv)) = tvs
        return 0
}

// int getsockopt(int sockfd, int level, int optname, void *optval, socklen_t *optlen);
func Xgetsockopt(t *TLS, sockfd, level, optname int32, optval, optlen uintptr) int32 {
        if _, _, err := unix.Syscall6(unix.SYS_GETSOCKOPT, uintptr(sockfd), uintptr(level), uintptr(optname), optval, optlen, 0); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// int setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t optlen);
func Xsetsockopt(t *TLS, sockfd, level, optname int32, optval uintptr, optlen socket.Socklen_t) int32 {
        if _, _, err := unix.Syscall6(unix.SYS_SETSOCKOPT, uintptr(sockfd), uintptr(level), uintptr(optname), optval, uintptr(optlen), 0); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// int ioctl(int fd, unsigned long request, ...);
func Xioctl(t *TLS, fd int32, request ulong, va uintptr) int32 {
        var argp uintptr
        if va != 0 {
                argp = VaUintptr(&va)
        }
        n, _, err := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(request), argp)
        if err != 0 {
                t.setErrno(err)
                return -1
        }

        return int32(n)
}

// int getsockname(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
func Xgetsockname(t *TLS, sockfd int32, addr, addrlen uintptr) int32 {
        if _, _, err := unix.Syscall(unix.SYS_GETSOCKNAME, uintptr(sockfd), addr, addrlen); err != 0 { // Cannot avoid the syscall here.
                if dmesgs {
                        dmesg("%v: fd %v: %v FAIL", origin(1), sockfd, err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: fd %v: ok", origin(1), sockfd)
        }
        return 0
}

// int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
func Xselect(t *TLS, nfds int32, readfds, writefds, exceptfds, timeout uintptr) int32 {
        n, err := unix.Select(
                int(nfds),
                (*unix.FdSet)(unsafe.Pointer(readfds)),
                (*unix.FdSet)(unsafe.Pointer(writefds)),
                (*unix.FdSet)(unsafe.Pointer(exceptfds)),
                (*unix.Timeval)(unsafe.Pointer(timeout)),
        )
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return int32(n)
}

// int mkfifo(const char *pathname, mode_t mode);
func Xmkfifo(t *TLS, pathname uintptr, mode types.Mode_t) int32 {
        if err := unix.Mkfifo(GoString(pathname), uint32(mode)); err != nil {
                t.setErrno(err)
                return -1
        }

        return 0
}

// mode_t umask(mode_t mask);
func Xumask(t *TLS, mask types.Mode_t) types.Mode_t {
        return types.Mode_t(unix.Umask(int(mask)))
}

// // int execvp(const char *file, char *const argv[]);
// func Xexecvp(t *TLS, file, argv uintptr) int32 {
//      if _, _, err := unix.Syscall(unix.SYS_EXECVE, file, argv, Environ()); err != 0 {
//              t.setErrno(err)
//              return -1
//      }
//
//      return 0
// }

// pid_t (pid_t pid, int *wstatus, int options);
func Xwaitpid(t *TLS, pid types.Pid_t, wstatus uintptr, optname int32) types.Pid_t {
        n, err := unix.Wait4(int(pid), (*unix.WaitStatus)(unsafe.Pointer(wstatus)), int(optname), nil)
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Pid_t(n)
}

// int uname(struct utsname *buf);
func Xuname(t *TLS, buf uintptr) int32 {
        if err := unix.Uname((*unix.Utsname)(unsafe.Pointer(buf))); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// ssize_t recv(int sockfd, void *buf, size_t len, int flags);
func Xrecv(t *TLS, sockfd int32, buf uintptr, len types.Size_t, flags int32) types.Ssize_t {
        n, _, err := unix.Syscall6(unix.SYS_RECVFROM, uintptr(sockfd), buf, uintptr(len), uintptr(flags), 0, 0)
        if err != 0 {
                t.setErrno(err)
                return -1
        }

        return types.Ssize_t(n)
}

// ssize_t send(int sockfd, const void *buf, size_t len, int flags);
func Xsend(t *TLS, sockfd int32, buf uintptr, len types.Size_t, flags int32) types.Ssize_t {
        n, _, err := unix.Syscall6(unix.SYS_SENDTO, uintptr(sockfd), buf, uintptr(len), uintptr(flags), 0, 0)
        if err != 0 {
                t.setErrno(err)
                return -1
        }

        return types.Ssize_t(n)
}

// int shutdown(int sockfd, int how);
func Xshutdown(t *TLS, sockfd, how int32) int32 {
        if _, _, err := unix.Syscall(unix.SYS_SHUTDOWN, uintptr(sockfd), uintptr(how), 0); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// int getpeername(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
func Xgetpeername(t *TLS, sockfd int32, addr uintptr, addrlen uintptr) int32 {
        if _, _, err := unix.Syscall(unix.SYS_GETPEERNAME, uintptr(sockfd), addr, uintptr(addrlen)); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// int socket(int domain, int type, int protocol);
func Xsocket(t *TLS, domain, type1, protocol int32) int32 {
        n, _, err := unix.Syscall(unix.SYS_SOCKET, uintptr(domain), uintptr(type1), uintptr(protocol))
        if err != 0 {
                t.setErrno(err)
                return -1
        }

        return int32(n)
}

// int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
func Xbind(t *TLS, sockfd int32, addr uintptr, addrlen uint32) int32 {
        n, _, err := unix.Syscall(unix.SYS_BIND, uintptr(sockfd), addr, uintptr(addrlen))
        if err != 0 {
                t.setErrno(err)
                return -1
        }

        return int32(n)
}

// int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
func Xconnect(t *TLS, sockfd int32, addr uintptr, addrlen uint32) int32 {
        if _, _, err := unix.Syscall(unix.SYS_CONNECT, uintptr(sockfd), addr, uintptr(addrlen)); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// int listen(int sockfd, int backlog);
func Xlisten(t *TLS, sockfd, backlog int32) int32 {
        if _, _, err := unix.Syscall(unix.SYS_LISTEN, uintptr(sockfd), uintptr(backlog), 0); err != 0 {
                t.setErrno(err)
                return -1
        }

        return 0
}

// int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
func Xaccept(t *TLS, sockfd int32, addr uintptr, addrlen uintptr) int32 {
        panic(todo(""))
        // n, _, err := unix.Syscall6(unix.SYS_ACCEPT4, uintptr(sockfd), addr, uintptr(addrlen), 0, 0, 0)
        // if err != 0 {
        //      t.setErrno(err)
        //      return -1
        // }

        // return int32(n)
}

// // int getrlimit(int resource, struct rlimit *rlim);
// func Xgetrlimit(t *TLS, resource int32, rlim uintptr) int32 {
//      return Xgetrlimit64(t, resource, rlim)
// }
//
// // int setrlimit(int resource, const struct rlimit *rlim);
// func Xsetrlimit(t *TLS, resource int32, rlim uintptr) int32 {
//      return Xsetrlimit64(t, resource, rlim)
// }
//
// // int setrlimit(int resource, const struct rlimit *rlim);
// func Xsetrlimit64(t *TLS, resource int32, rlim uintptr) int32 {
//      if _, _, err := unix.Syscall(unix.SYS_SETRLIMIT, uintptr(resource), uintptr(rlim), 0); err != 0 {
//              t.setErrno(err)
//              return -1
//      }
//
//      return 0
// }

// uid_t getuid(void);
func Xgetuid(t *TLS) types.Uid_t {
        r := types.Uid_t(os.Getuid())
        if dmesgs {
                dmesg("%v: %v", origin(1), r)
        }
        return r
}

// pid_t getpid(void);
func Xgetpid(t *TLS) int32 {
        r := int32(os.Getpid())
        if dmesgs {
                dmesg("%v: %v", origin(1), r)
        }
        return r
}

// int system(const char *command);
func Xsystem(t *TLS, command uintptr) int32 {
        s := GoString(command)
        if command == 0 {
                panic(todo(""))
        }

        cmd := exec.Command("sh", "-c", s)
        cmd.Stdout = os.Stdout
        cmd.Stderr = os.Stderr
        err := cmd.Run()
        if err != nil {
                ps := err.(*exec.ExitError)
                return int32(ps.ExitCode())
        }

        return 0
}

// int setvbuf(FILE *stream, char *buf, int mode, size_t size);
func Xsetvbuf(t *TLS, stream, buf uintptr, mode int32, size types.Size_t) int32 {
        return 0 //TODO
}

// int raise(int sig);
func Xraise(t *TLS, sig int32) int32 {
        panic(todo(""))
}

// // int backtrace(void **buffer, int size);
// func Xbacktrace(t *TLS, buf uintptr, size int32) int32 {
//      panic(todo(""))
// }
//
// // void backtrace_symbols_fd(void *const *buffer, int size, int fd);
// func Xbacktrace_symbols_fd(t *TLS, buffer uintptr, size, fd int32) {
//      panic(todo(""))
// }

// int fileno(FILE *stream);
func Xfileno(t *TLS, stream uintptr) int32 {
        if stream == 0 {
                if dmesgs {
                        dmesg("%v: FAIL", origin(1))
                }
                t.setErrno(errno.EBADF)
                return -1
        }

        if fd := int32((*stdio.FILE)(unsafe.Pointer(stream)).F_file); fd >= 0 {
                return fd
        }

        if dmesgs {
                dmesg("%v: FAIL", origin(1))
        }
        t.setErrno(errno.EBADF)
        return -1
}

func newFtsent(t *TLS, info int, path string, stat *unix.Stat_t, err syscall.Errno) (r *fts.FTSENT) {
        var statp uintptr
        if stat != nil {
                statp = Xmalloc(t, types.Size_t(unsafe.Sizeof(unix.Stat_t{})))
                if statp == 0 {
                        panic("OOM")
                }

                *(*unix.Stat_t)(unsafe.Pointer(statp)) = *stat
        }
        csp, errx := CString(path)
        if errx != nil {
                panic("OOM")
        }

        return &fts.FTSENT{
                Ffts_info:    uint16(info),
                Ffts_path:    csp,
                Ffts_pathlen: uint16(len(path)),
                Ffts_statp:   statp,
                Ffts_errno:   int32(err),
        }
}

func newCFtsent(t *TLS, info int, path string, stat *unix.Stat_t, err syscall.Errno) uintptr {
        p := Xcalloc(t, 1, types.Size_t(unsafe.Sizeof(fts.FTSENT{})))
        if p == 0 {
                panic("OOM")
        }

        *(*fts.FTSENT)(unsafe.Pointer(p)) = *newFtsent(t, info, path, stat, err)
        return p
}

func ftsentClose(t *TLS, p uintptr) {
        Xfree(t, (*fts.FTSENT)(unsafe.Pointer(p)).Ffts_path)
        Xfree(t, (*fts.FTSENT)(unsafe.Pointer(p)).Ffts_statp)
}

type ftstream struct {
        s []uintptr
        x int
}

func (f *ftstream) close(t *TLS) {
        for _, p := range f.s {
                ftsentClose(t, p)
                Xfree(t, p)
        }
        *f = ftstream{}
}

// FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **));
func Xfts_open(t *TLS, path_argv uintptr, options int32, compar uintptr) uintptr {
        f := &ftstream{}

        var walk func(string)
        walk = func(path string) {
                var fi os.FileInfo
                var err error
                switch {
                case options&fts.FTS_LOGICAL != 0:
                        fi, err = os.Stat(path)
                case options&fts.FTS_PHYSICAL != 0:
                        fi, err = os.Lstat(path)
                default:
                        panic(todo(""))
                }

                if err != nil {
                        return
                }

                var statp *unix.Stat_t
                if options&fts.FTS_NOSTAT == 0 {
                        var stat unix.Stat_t
                        switch {
                        case options&fts.FTS_LOGICAL != 0:
                                if err := unix.Stat(path, &stat); err != nil {
                                        panic(todo(""))
                                }
                        case options&fts.FTS_PHYSICAL != 0:
                                if err := unix.Lstat(path, &stat); err != nil {
                                        panic(todo(""))
                                }
                        default:
                                panic(todo(""))
                        }

                        statp = &stat
                }

        out:
                switch {
                case fi.IsDir():
                        f.s = append(f.s, newCFtsent(t, fts.FTS_D, path, statp, 0))
                        g, err := os.Open(path)
                        switch x := err.(type) {
                        case nil:
                                // ok
                        case *os.PathError:
                                f.s = append(f.s, newCFtsent(t, fts.FTS_DNR, path, statp, errno.EACCES))
                                break out
                        default:
                                panic(todo("%q: %v %T", path, x, x))
                        }

                        names, err := g.Readdirnames(-1)
                        g.Close()
                        if err != nil {
                                panic(todo(""))
                        }

                        for _, name := range names {
                                walk(path + "/" + name)
                                if f == nil {
                                        break out
                                }
                        }

                        f.s = append(f.s, newCFtsent(t, fts.FTS_DP, path, statp, 0))
                default:
                        info := fts.FTS_F
                        if fi.Mode()&os.ModeSymlink != 0 {
                                info = fts.FTS_SL
                        }
                        switch {
                        case statp != nil:
                                f.s = append(f.s, newCFtsent(t, info, path, statp, 0))
                        case options&fts.FTS_NOSTAT != 0:
                                f.s = append(f.s, newCFtsent(t, fts.FTS_NSOK, path, nil, 0))
                        default:
                                panic(todo(""))
                        }
                }
        }

        for {
                p := *(*uintptr)(unsafe.Pointer(path_argv))
                if p == 0 {
                        if f == nil {
                                return 0
                        }

                        if compar != 0 {
                                panic(todo(""))
                        }

                        return addObject(f)
                }

                walk(GoString(p))
                path_argv += unsafe.Sizeof(uintptr(0))
        }
}

// FTSENT *fts_read(FTS *ftsp);
func Xfts_read(t *TLS, ftsp uintptr) uintptr {
        f := getObject(ftsp).(*ftstream)
        if f.x == len(f.s) {
                if dmesgs {
                        dmesg("%v: FAIL", origin(1))
                }
                t.setErrno(0)
                return 0
        }

        r := f.s[f.x]
        if e := (*fts.FTSENT)(unsafe.Pointer(r)).Ffts_errno; e != 0 {
                if dmesgs {
                        dmesg("%v: FAIL", origin(1))
                }
                t.setErrno(e)
        }
        f.x++
        return r
}

// int fts_close(FTS *ftsp);
func Xfts_close(t *TLS, ftsp uintptr) int32 {
        getObject(ftsp).(*ftstream).close(t)
        removeObject(ftsp)
        return 0
}

// void tzset (void);
func Xtzset(t *TLS) {
        //TODO
}

// char *strerror(int errnum);
func Xstrerror(t *TLS, errnum int32) uintptr {
        panic(todo(""))
}

// void *dlopen(const char *filename, int flags);
func Xdlopen(t *TLS, filename uintptr, flags int32) uintptr {
        panic(todo(""))
}

// char *dlerror(void);
func Xdlerror(t *TLS) uintptr {
        panic(todo(""))
}

// int dlclose(void *handle);
func Xdlclose(t *TLS, handle uintptr) int32 {
        panic(todo(""))
}

// void *dlsym(void *handle, const char *symbol);
func Xdlsym(t *TLS, handle, symbol uintptr) uintptr {
        panic(todo(""))
}

// void perror(const char *s);
func Xperror(t *TLS, s uintptr) {
        panic(todo(""))
}

// int pclose(FILE *stream);
func Xpclose(t *TLS, stream uintptr) int32 {
        panic(todo(""))
}

// var gai_strerrorBuf [100]byte

// const char *gai_strerror(int errcode);
func Xgai_strerror(t *TLS, errcode int32) uintptr {
        panic(todo(""))
        // copy(gai_strerrorBuf[:], fmt.Sprintf("gai error %d\x00", errcode))
        // return uintptr(unsafe.Pointer(&gai_strerrorBuf))
}

// int tcgetattr(int fd, struct termios *termios_p);
func Xtcgetattr(t *TLS, fd int32, termios_p uintptr) int32 {
        panic(todo(""))
}

// int tcsetattr(int fd, int optional_actions, const struct termios *termios_p);
func Xtcsetattr(t *TLS, fd, optional_actions int32, termios_p uintptr) int32 {
        panic(todo(""))
}

// speed_t cfgetospeed(const struct termios *termios_p);
func Xcfgetospeed(t *TLS, termios_p uintptr) termios.Speed_t {
        panic(todo(""))
}

// int cfsetospeed(struct termios *termios_p, speed_t speed);
// func Xcfsetospeed(t *TLS, termios_p uintptr, speed uint32) int32 {
func Xcfsetospeed(...interface{}) int32 {
        panic(todo(""))
}

// int cfsetispeed(struct termios *termios_p, speed_t speed);
// func Xcfsetispeed(t *TLS, termios_p uintptr, speed uint32) int32 {
func Xcfsetispeed(...interface{}) int32 {
        panic(todo(""))
}

// pid_t fork(void);
func Xfork(t *TLS) int32 {
        if dmesgs {
                dmesg("%v: FAIL", origin(1))
        }
        t.setErrno(errno.ENOSYS)
        return -1
}

var emptyStr = [1]byte{}

// char *setlocale(int category, const char *locale);
func Xsetlocale(t *TLS, category int32, locale uintptr) uintptr {
        return uintptr(unsafe.Pointer(&emptyStr)) //TODO
}

// char *nl_langinfo(nl_item item);
func Xnl_langinfo(t *TLS, item langinfo.Nl_item) uintptr {
        return uintptr(unsafe.Pointer(&emptyStr)) //TODO
}

// FILE *popen(const char *command, const char *type);
func Xpopen(t *TLS, command, type1 uintptr) uintptr {
        panic(todo(""))
}

// char *realpath(const char *path, char *resolved_path);
func Xrealpath(t *TLS, path, resolved_path uintptr) uintptr {
        s, err := filepath.EvalSymlinks(GoString(path))
        if err != nil {
                if os.IsNotExist(err) {
                        if dmesgs {
                                dmesg("%v: %q: %v FAIL", origin(1), GoString(path), err)
                        }
                        t.setErrno(errno.ENOENT)
                        return 0
                }

                panic(todo("", err))
        }

        if resolved_path == 0 {
                panic(todo(""))
        }

        if len(s) >= limits.PATH_MAX {
                s = s[:limits.PATH_MAX-1]
        }

        copy((*RawMem)(unsafe.Pointer(resolved_path))[:len(s):len(s)], s)
        (*RawMem)(unsafe.Pointer(resolved_path))[len(s)] = 0
        if dmesgs {
                dmesg("%v: %q: ok", origin(1), GoString(path))
        }
        return resolved_path
}

// struct tm *gmtime_r(const time_t *timep, struct tm *result);
func Xgmtime_r(t *TLS, timep, result uintptr) uintptr {
        panic(todo(""))
}

// char *inet_ntoa(struct in_addr in);
func Xinet_ntoa(t *TLS, in1 in.In_addr) uintptr {
        panic(todo(""))
}

func X__ccgo_in6addr_anyp(t *TLS) uintptr {
        panic(todo(""))
        // return uintptr(unsafe.Pointer(&in6_addr_any))
}

func Xabort(t *TLS) {
        if dmesgs {
                dmesg("%v:", origin(1))
        }
        p := Xcalloc(t, 1, types.Size_t(unsafe.Sizeof(signal.Sigaction{})))
        if p == 0 {
                panic("OOM")
        }

        (*signal.Sigaction)(unsafe.Pointer(p)).F__sigaction_u.F__sa_handler = signal.SIG_DFL
        Xsigaction(t, signal.SIGABRT, p, 0)
        Xfree(t, p)
        unix.Kill(unix.Getpid(), syscall.Signal(signal.SIGABRT))
        panic(todo("unrechable"))
}

// int fflush(FILE *stream);
func Xfflush(t *TLS, stream uintptr) int32 {
        return 0 //TODO
}

// size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
func Xfread(t *TLS, ptr uintptr, size, nmemb types.Size_t, stream uintptr) types.Size_t {
        fd := uintptr(file(stream).fd())
        count := size * nmemb
        var n int
        var err error
        switch {
        case count == 0:
                n, err = unix.Read(int(fd), nil)
        default:
                n, err = unix.Read(int(fd), (*RawMem)(unsafe.Pointer(ptr))[:count:count])
                if dmesgs && err == nil {
                        dmesg("%v: fd %v, n %#x\n%s", origin(1), fd, n, hex.Dump((*RawMem)(unsafe.Pointer(ptr))[:n:n]))
                }
        }
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                file(stream).setErr()
                return types.Size_t(n) / size
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Size_t(n) / size
}

// size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
func Xfwrite(t *TLS, ptr uintptr, size, nmemb types.Size_t, stream uintptr) types.Size_t {
        fd := uintptr(file(stream).fd())
        count := size * nmemb
        var n int
        var err error
        switch {
        case count == 0:
                n, err = unix.Write(int(fd), nil)
        default:
                n, err = unix.Write(int(fd), (*RawMem)(unsafe.Pointer(ptr))[:count:count])
                if dmesgs {
                        dmesg("%v: fd %v, count %#x\n%s", origin(1), fd, count, hex.Dump((*RawMem)(unsafe.Pointer(ptr))[:count:count]))
                }
        }
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                file(stream).setErr()
                return types.Size_t(n) / size
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Size_t(n) / size
}

// int fclose(FILE *stream);
func Xfclose(t *TLS, stream uintptr) int32 {
        r := file(stream).close(t)
        if r != 0 {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), r)
                }
                t.setErrno(r)
                return stdio.EOF
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// int fputc(int c, FILE *stream);
func Xfputc(t *TLS, c int32, stream uintptr) int32 {
        if _, err := fwrite(file(stream).fd(), []byte{byte(c)}); err != nil {
                return stdio.EOF
        }

        return int32(byte(c))
}

// int fseek(FILE *stream, long offset, int whence);
func Xfseek(t *TLS, stream uintptr, offset long, whence int32) int32 {
        if n := Xlseek(t, int32(file(stream).fd()), types.Off_t(offset), whence); n < 0 {
                if dmesgs {
                        dmesg("%v: fd %v, off %#x, whence %v: %v", origin(1), file(stream).fd(), offset, whenceStr(whence), n)
                }
                file(stream).setErr()
                return -1
        }

        if dmesgs {
                dmesg("%v: fd %v, off %#x, whence %v: ok", origin(1), file(stream).fd(), offset, whenceStr(whence))
        }
        return 0
}

// long ftell(FILE *stream);
func Xftell(t *TLS, stream uintptr) long {
        n := Xlseek(t, file(stream).fd(), 0, stdio.SEEK_CUR)
        if n < 0 {
                file(stream).setErr()
                return -1
        }

        if dmesgs {
                dmesg("%v: fd %v, n %#x: ok %#x", origin(1), file(stream).fd(), n, long(n))
        }
        return long(n)
}

// int ferror(FILE *stream);
func Xferror(t *TLS, stream uintptr) int32 {
        return Bool32(file(stream).err())
}

// int fputs(const char *s, FILE *stream);
func Xfputs(t *TLS, s, stream uintptr) int32 {
        panic(todo(""))
        // if _, _, err := unix.Syscall(unix.SYS_WRITE, uintptr(file(stream).fd()), s, uintptr(Xstrlen(t, s))); err != 0 {
        //      return -1
        // }

        // return 0
}

var getservbynameStaticResult netdb.Servent

// struct servent *getservbyname(const char *name, const char *proto);
func Xgetservbyname(t *TLS, name, proto uintptr) uintptr {
        var protoent *gonetdb.Protoent
        if proto != 0 {
                protoent = gonetdb.GetProtoByName(GoString(proto))
        }
        servent := gonetdb.GetServByName(GoString(name), protoent)
        if servent == nil {
                if dmesgs {
                        dmesg("%q %q: nil (protoent %+v)", GoString(name), GoString(proto), protoent)
                }
                return 0
        }

        Xfree(t, (*netdb.Servent)(unsafe.Pointer(&getservbynameStaticResult)).Fs_name)
        if v := (*netdb.Servent)(unsafe.Pointer(&getservbynameStaticResult)).Fs_aliases; v != 0 {
                for {
                        p := *(*uintptr)(unsafe.Pointer(v))
                        if p == 0 {
                                break
                        }

                        Xfree(t, p)
                        v += unsafe.Sizeof(uintptr(0))
                }
                Xfree(t, v)
        }
        Xfree(t, (*netdb.Servent)(unsafe.Pointer(&getservbynameStaticResult)).Fs_proto)
        cname, err := CString(servent.Name)
        if err != nil {
                getservbynameStaticResult = netdb.Servent{}
                return 0
        }

        var protoname uintptr
        if protoent != nil {
                if protoname, err = CString(protoent.Name); err != nil {
                        Xfree(t, cname)
                        getservbynameStaticResult = netdb.Servent{}
                        return 0
                }
        }
        var a []uintptr
        for _, v := range servent.Aliases {
                cs, err := CString(v)
                if err != nil {
                        for _, v := range a {
                                Xfree(t, v)
                        }
                        return 0
                }

                a = append(a, cs)
        }
        v := Xcalloc(t, types.Size_t(len(a)+1), types.Size_t(unsafe.Sizeof(uintptr(0))))
        if v == 0 {
                Xfree(t, cname)
                Xfree(t, protoname)
                for _, v := range a {
                        Xfree(t, v)
                }
                getservbynameStaticResult = netdb.Servent{}
                return 0
        }
        for _, p := range a {
                *(*uintptr)(unsafe.Pointer(v)) = p
                v += unsafe.Sizeof(uintptr(0))
        }

        getservbynameStaticResult = netdb.Servent{
                Fs_name:    cname,
                Fs_aliases: v,
                Fs_port:    int32(servent.Port),
                Fs_proto:   protoname,
        }
        return uintptr(unsafe.Pointer(&getservbynameStaticResult))
}

// //TODO- func Xreaddir64(t *TLS, dir uintptr) uintptr {
// //TODO-      return Xreaddir(t, dir)
// //TODO- }
//
// func __syscall(r, _ uintptr, errno syscall.Errno) long {
//      if errno != 0 {
//              return long(-errno)
//      }
//
//      return long(r)
// }

func fcntlCmdStr(cmd int32) string {
        switch cmd {
        case fcntl.F_GETOWN:
                return "F_GETOWN"
        case fcntl.F_SETLK:
                return "F_SETLK"
        case fcntl.F_GETLK:
                return "F_GETLK"
        case fcntl.F_SETFD:
                return "F_SETFD"
        case fcntl.F_GETFD:
                return "F_GETFD"
        default:
                return fmt.Sprintf("cmd(%d)", cmd)
        }
}

// // struct __float2 { float __sinval; float __cosval; };
// // struct __double2 { double __sinval; double __cosval; };
// //
// // extern struct __float2 __sincosf_stret(float);
// // extern struct __double2 __sincos_stret(double);
// // extern struct __float2 __sincospif_stret(float);
// // extern struct __double2 __sincospi_stret(double);
//
// type X__float2 struct{ F__sinval, F__cosval float32 }
// type X__double2 struct{ F__sinval, F__cosval float32 }
//
// func X__sincosf_stret(*TLS, float32) X__float2 {
//      panic(todo(""))
// }
//
// func X__sincos_stret(*TLS, float64) X__double2 {
//      panic(todo(""))
// }
//
// func X__sincospif_stret(*TLS, float32) X__float2 {
//      panic(todo(""))
// }
//
// func X__sincospi_stret(*TLS, float64) X__double2 {
//      panic(todo(""))
// }

// ssize_t pread(int fd, void *buf, size_t count, off_t offset);
func Xpread(t *TLS, fd int32, buf uintptr, count types.Size_t, offset types.Off_t) types.Ssize_t {
        var n int
        var err error
        switch {
        case count == 0:
                n, err = unix.Pread(int(fd), nil, int64(offset))
        default:
                n, err = unix.Pread(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count], int64(offset))
                if dmesgs && err == nil {
                        dmesg("%v: fd %v, off %#x, count %#x, n %#x\n%s", origin(1), fd, offset, count, n, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:n:n]))
                }
        }
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Ssize_t(n)
}

// ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset);
func Xpwrite(t *TLS, fd int32, buf uintptr, count types.Size_t, offset types.Off_t) types.Ssize_t {
        var n int
        var err error
        switch {
        case count == 0:
                n, err = unix.Pwrite(int(fd), nil, int64(offset))
        default:
                n, err = unix.Pwrite(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count], int64(offset))
                if dmesgs {
                        dmesg("%v: fd %v, off %#x, count %#x\n%s", origin(1), fd, offset, count, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:count:count]))
                }
        }
        if err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return types.Ssize_t(n)
}

// char***_NSGetEnviron()
func X_NSGetEnviron(t *TLS) uintptr {
        return EnvironP()
}

// int chflags(const char *path, u_int flags);
func Xchflags(t *TLS, path uintptr, flags uint32) int32 {
        if err := unix.Chflags(GoString(path), int(flags)); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// int rmdir(const char *pathname);
func Xrmdir(t *TLS, pathname uintptr) int32 {
        if err := unix.Rmdir(GoString(pathname)); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// uint64_t mach_absolute_time(void);
func Xmach_absolute_time(t *TLS) uint64 {
        return uint64(gotime.Now().UnixNano())
}

// See https://developer.apple.com/library/archive/qa/qa1398/_index.html
type machTimebaseInfo = struct {
        Fnumer uint32
        Fdenom uint32
} /* mach_time.h:36:1 */

// kern_return_t mach_timebase_info(mach_timebase_info_t info);
func Xmach_timebase_info(t *TLS, info uintptr) int32 {
        *(*machTimebaseInfo)(unsafe.Pointer(info)) = machTimebaseInfo{Fnumer: 1, Fdenom: 1}
        return 0
}

// int getattrlist(const char* path, struct attrlist * attrList, void * attrBuf, size_t attrBufSize, unsigned long options);
func Xgetattrlist(t *TLS, path, attrList, attrBuf uintptr, attrBufSize types.Size_t, options uint32) int32 {
        if _, _, err := unix.Syscall6(unix.SYS_GETATTRLIST, path, attrList, attrBuf, uintptr(attrBufSize), uintptr(options), 0); err != 0 { // Cannot avoid the syscall here.
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// int setattrlist(const char* path, struct attrlist * attrList, void * attrBuf, size_t attrBufSize, unsigned long options);
func Xsetattrlist(t *TLS, path, attrList, attrBuf uintptr, attrBufSize types.Size_t, options uint32) int32 {
        if _, _, err := unix.Syscall6(unix.SYS_SETATTRLIST, path, attrList, attrBuf, uintptr(attrBufSize), uintptr(options), 0); err != 0 { // Cannot avoid the syscall here.
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        return 0
}

// int copyfile(const char *from, const char *to, copyfile_state_t state, copyfile_flags_t flags);
func Xcopyfile(...interface{}) int32 {
        panic(todo(""))
}

// int truncate(const char *path, off_t length);
func Xtruncate(...interface{}) int32 {
        panic(todo(""))
}

type darwinDir struct {
        buf [4096]byte
        fd  int
        h   int
        l   int

        eof bool
}

// DIR *opendir(const char *name);
func Xopendir(t *TLS, name uintptr) uintptr {
        p := Xmalloc(t, uint64(unsafe.Sizeof(darwinDir{})))
        if p == 0 {
                panic("OOM")
        }

        fd := int(Xopen(t, name, fcntl.O_RDONLY|fcntl.O_DIRECTORY|fcntl.O_CLOEXEC, 0))
        if fd < 0 {
                if dmesgs {
                        dmesg("%v: FAIL %v", origin(1), (*darwinDir)(unsafe.Pointer(p)).fd)
                }
                Xfree(t, p)
                // trc("==== opendir: %#x", 0)
                return 0
        }

        if dmesgs {
                dmesg("%v: ok", origin(1))
        }
        (*darwinDir)(unsafe.Pointer(p)).fd = fd
        (*darwinDir)(unsafe.Pointer(p)).h = 0
        (*darwinDir)(unsafe.Pointer(p)).l = 0
        (*darwinDir)(unsafe.Pointer(p)).eof = false
        // trc("==== opendir: %#x", p)
        return p
}

// struct dirent *readdir(DIR *dirp);
func Xreaddir(t *TLS, dir uintptr) uintptr {
        if (*darwinDir)(unsafe.Pointer(dir)).eof {
                return 0
        }

        // trc(".... readdir %#x: l %v, h %v", dir, (*darwinDir)(unsafe.Pointer(dir)).l, (*darwinDir)(unsafe.Pointer(dir)).h)
        if (*darwinDir)(unsafe.Pointer(dir)).l == (*darwinDir)(unsafe.Pointer(dir)).h {
                n, err := unix.Getdirentries((*darwinDir)(unsafe.Pointer(dir)).fd, (*darwinDir)(unsafe.Pointer(dir)).buf[:], nil)
                // trc("must read: %v %v", n, err)
                if n == 0 {
                        if err != nil && err != io.EOF {
                                if dmesgs {
                                        dmesg("%v: %v FAIL", origin(1), err)
                                }
                                t.setErrno(err)
                        }
                        (*darwinDir)(unsafe.Pointer(dir)).eof = true
                        return 0
                }

                (*darwinDir)(unsafe.Pointer(dir)).l = 0
                (*darwinDir)(unsafe.Pointer(dir)).h = n
                // trc("new l %v, h %v", (*darwinDir)(unsafe.Pointer(dir)).l, (*darwinDir)(unsafe.Pointer(dir)).h)
        }
        de := dir + unsafe.Offsetof(darwinDir{}.buf) + uintptr((*darwinDir)(unsafe.Pointer(dir)).l)
        // trc("dir %#x de %#x", dir, de)
        (*darwinDir)(unsafe.Pointer(dir)).l += int((*unix.Dirent)(unsafe.Pointer(de)).Reclen)
        // trc("final l %v, h %v", (*darwinDir)(unsafe.Pointer(dir)).l, (*darwinDir)(unsafe.Pointer(dir)).h)
        return de
}

func Xclosedir(t *TLS, dir uintptr) int32 {
        // trc("---- closedir: %#x", dir)
        r := Xclose(t, int32((*darwinDir)(unsafe.Pointer(dir)).fd))
        Xfree(t, dir)
        return r
}

// int pipe(int pipefd[2]);
func Xpipe(t *TLS, pipefd uintptr) int32 {
        var a [2]int
        if err := syscall.Pipe(a[:]); err != nil {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        *(*[2]int32)(unsafe.Pointer(pipefd)) = [2]int32{int32(a[0]), int32(a[1])}
        if dmesgs {
                dmesg("%v: %v ok", origin(1), a)
        }
        return 0
}

// int __isoc99_sscanf(const char *str, const char *format, ...);
func X__isoc99_sscanf(t *TLS, str, format, va uintptr) int32 {
        r := scanf(strings.NewReader(GoString(str)), format, va)
        // if dmesgs {
        //      dmesg("%v: %q %q: %d", origin(1), GoString(str), GoString(format), r)
        // }
        return r
}

// int sscanf(const char *str, const char *format, ...);
func Xsscanf(t *TLS, str, format, va uintptr) int32 {
        r := scanf(strings.NewReader(GoString(str)), format, va)
        // if dmesgs {
        //      dmesg("%v: %q %q: %d", origin(1), GoString(str), GoString(format), r)
        // }
        return r
}

// int posix_fadvise(int fd, off_t offset, off_t len, int advice);
func Xposix_fadvise(t *TLS, fd int32, offset, len types.Off_t, advice int32) int32 {
        panic(todo(""))
}

// clock_t clock(void);
func Xclock(t *TLS) time.Clock_t {
        return time.Clock_t(gotime.Since(startTime) * gotime.Duration(time.CLOCKS_PER_SEC) / gotime.Second)
}

// int iswspace(wint_t wc);
func Xiswspace(t *TLS, wc wctype.Wint_t) int32 {
        return Bool32(unicode.IsSpace(rune(wc)))
}

// int iswalnum(wint_t wc);
func Xiswalnum(t *TLS, wc wctype.Wint_t) int32 {
        return Bool32(unicode.IsLetter(rune(wc)) || unicode.IsNumber(rune(wc)))
}

// void arc4random_buf(void *buf, size_t nbytes);
func Xarc4random_buf(t *TLS, buf uintptr, buflen size_t) {
        if _, err := crand.Read((*RawMem)(unsafe.Pointer(buf))[:buflen]); err != nil {
                panic(todo(""))
        }
}

type darwin_mutexattr_t struct {
        sig int64
        x   [8]byte
}

type darwin_mutex_t struct {
        sig int64
        x   [65]byte
}

func X__ccgo_pthreadMutexattrGettype(tls *TLS, a uintptr) int32 {
        return (int32((*darwin_mutexattr_t)(unsafe.Pointer(a)).x[4] >> 2 & 3))
}

func X__ccgo_getMutexType(tls *TLS, m uintptr) int32 {
        return (int32((*darwin_mutex_t)(unsafe.Pointer(m)).x[4] >> 2 & 3))
}

func X__ccgo_pthreadAttrGetDetachState(tls *TLS, a uintptr) int32 {
        panic(todo(""))
}

func Xpthread_attr_getdetachstate(tls *TLS, a uintptr, state uintptr) int32 {
        panic(todo(""))
}

func Xpthread_attr_setdetachstate(tls *TLS, a uintptr, state int32) int32 {
        panic(todo(""))
}

func Xpthread_mutexattr_destroy(tls *TLS, a uintptr) int32 {
        return 0
}

func Xpthread_mutexattr_init(tls *TLS, a uintptr) int32 {
        *(*darwin_mutexattr_t)(unsafe.Pointer(a)) = darwin_mutexattr_t{}
        return 0
}

func Xpthread_mutexattr_settype(tls *TLS, a uintptr, type1 int32) int32 {
        if uint32(type1) > uint32(2) {
                return errno.EINVAL
        }
        (*darwin_mutexattr_t)(unsafe.Pointer(a)).x[4] = byte(type1 << 2)
        return 0
}

// ssize_t writev(int fd, const struct iovec *iov, int iovcnt);
func Xwritev(t *TLS, fd int32, iov uintptr, iovcnt int32) types.Ssize_t {
        // if dmesgs {
        //      dmesg("%v: fd %v iov %#x iovcnt %v", origin(1), fd, iov, iovcnt)
        // }
        r, _, err := unix.Syscall(unix.SYS_WRITEV, uintptr(fd), iov, uintptr(iovcnt))
        if err != 0 {
                if dmesgs {
                        dmesg("%v: %v FAIL", origin(1), err)
                }
                t.setErrno(err)
                return -1
        }

        return types.Ssize_t(r)
}

// int pause(void);
func Xpause(t *TLS) int32 {
        c := make(chan os.Signal)
        gosignal.Notify(c,
                syscall.SIGABRT,
                syscall.SIGALRM,
                syscall.SIGBUS,
                syscall.SIGCHLD,
                syscall.SIGCONT,
                syscall.SIGFPE,
                syscall.SIGHUP,
                syscall.SIGILL,
                // syscall.SIGINT,
                syscall.SIGIO,
                syscall.SIGIOT,
                syscall.SIGKILL,
                syscall.SIGPIPE,
                syscall.SIGPROF,
                syscall.SIGQUIT,
                syscall.SIGSEGV,
                syscall.SIGSTOP,
                syscall.SIGSYS,
                syscall.SIGTERM,
                syscall.SIGTRAP,
                syscall.SIGTSTP,
                syscall.SIGTTIN,
                syscall.SIGTTOU,
                syscall.SIGURG,
                syscall.SIGUSR1,
                syscall.SIGUSR2,
                syscall.SIGVTALRM,
                syscall.SIGWINCH,
                syscall.SIGXCPU,
                syscall.SIGXFSZ,
        )
        switch <-c {
        case syscall.SIGINT:
                panic(todo(""))
        default:
                t.setErrno(errno.EINTR)
                return -1
        }
}

// #define __DARWIN_FD_SETSIZE     1024
// #define __DARWIN_NFDBITS        (sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */
// #define __DARWIN_NBBY           8                               /* bits in a byte */
// #define __DARWIN_howmany(x, y)  ((((x) % (y)) == 0) ? ((x) / (y)) : (((x) / (y)) + 1)) /* # y's == x bits? */

// typedef struct fd_set {
//         __int32_t       fds_bits[__DARWIN_howmany(__DARWIN_FD_SETSIZE, __DARWIN_NFDBITS)];
// } fd_set;

// __darwin_fd_set(int _fd, struct fd_set *const _p)
//
//      {
//              (_p->fds_bits[(unsigned long)_fd / __DARWIN_NFDBITS] |= ((__int32_t)(((unsigned long)1) << ((unsigned long)_fd % __DARWIN_NFDBITS))));
//      }
func X__darwin_fd_set(tls *TLS, _fd int32, _p uintptr) int32 { /* main.c:12:1: */
        *(*int32)(unsafe.Pointer(_p + uintptr(uint64(_fd)/(uint64(unsafe.Sizeof(int32(0)))*uint64(8)))*4)) |= int32(uint64(uint64(1)) << (uint64(_fd) % (uint64(unsafe.Sizeof(int32(0))) * uint64(8))))
        return int32(0)
}

// __darwin_fd_isset(int _fd, const struct fd_set *_p)
//
//      {
//              return _p->fds_bits[(unsigned long)_fd / __DARWIN_NFDBITS] & ((__int32_t)(((unsigned long)1) << ((unsigned long)_fd % __DARWIN_NFDBITS)));
//      }
func X__darwin_fd_isset(tls *TLS, _fd int32, _p uintptr) int32 { /* main.c:17:1: */
        return *(*int32)(unsafe.Pointer(_p + uintptr(uint64(_fd)/(uint64(unsafe.Sizeof(int32(0)))*uint64(8)))*4)) & int32(uint64(uint64(1))<<(uint64(_fd)%(uint64(unsafe.Sizeof(int32(0)))*uint64(8))))
}

// __darwin_fd_clr(int _fd, struct fd_set *const _p)
//
//      {
//              (_p->fds_bits[(unsigned long)_fd / __DARWIN_NFDBITS] &= ~((__int32_t)(((unsigned long)1) << ((unsigned long)_fd % __DARWIN_NFDBITS))));
//      }
func X__darwin_fd_clr(tls *TLS, _fd int32, _p uintptr) int32 { /* main.c:22:1: */
        *(*int32)(unsafe.Pointer(_p + uintptr(uint64(_fd)/(uint64(unsafe.Sizeof(int32(0)))*uint64(8)))*4)) &= ^int32(uint64(uint64(1)) << (uint64(_fd) % (uint64(unsafe.Sizeof(int32(0))) * uint64(8))))
        return int32(0)
}

// int ungetc(int c, FILE *stream);
func Xungetc(t *TLS, c int32, stream uintptr) int32 {
        panic(todo(""))
}

// int issetugid(void);
func Xissetugid(t *TLS) int32 {
        panic(todo(""))
}

var progname uintptr

// const char *getprogname(void);
func Xgetprogname(t *TLS) uintptr {
        if progname != 0 {
                return progname
        }

        var err error
        progname, err = CString(filepath.Base(os.Args[0]))
        if err != nil {
                t.setErrno(err)
                return 0
        }

        return progname
}

// void uuid_copy(uuid_t dst, uuid_t src);
func Xuuid_copy(t *TLS, dst, src uintptr) {
        *(*uuid.Uuid_t)(unsafe.Pointer(dst)) = *(*uuid.Uuid_t)(unsafe.Pointer(src))
}

// int uuid_parse( char *in, uuid_t uu);
func Xuuid_parse(t *TLS, in uintptr, uu uintptr) int32 {
        r, err := guuid.Parse(GoString(in))
        if err != nil {
                return -1
        }

        copy((*RawMem)(unsafe.Pointer(uu))[:unsafe.Sizeof(uuid.Uuid_t{})], r[:])
        return 0
}

// struct __float2 { float __sinval; float __cosval; };

// struct __float2 __sincosf_stret(float);
func X__sincosf_stret(t *TLS, f float32) struct{ F__sinval, F__cosval float32 } {
        panic(todo(""))
}

// struct __double2 { double __sinval; double __cosval; };

// struct __double2 __sincos_stret(double);
func X__sincos_stret(t *TLS, f float64) struct{ F__sinval, F__cosval float64 } {
        panic(todo(""))
}

// struct __float2 __sincospif_stret(float);
func X__sincospif_stret(t *TLS, f float32) struct{ F__sinval, F__cosval float32 } {
        panic(todo(""))
}

// struct _double2 __sincospi_stret(double);
func X__sincospi_stret(t *TLS, f float64) struct{ F__sinval, F__cosval float64 } {
        panic(todo(""))
}

// int  __srget(FILE *);
func X__srget(t *TLS, f uintptr) int32 {
        panic(todo(""))
}

// int  __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
func X__svfscanf(t *TLS, f uintptr, p, q uintptr) int32 {
        panic(todo(""))
}

// int  __swbuf(int, FILE *);
func X__swbuf(t *TLS, i int32, f uintptr) int32 {
        panic(todo(""))
}