gtsocial-umbx

libc_linux.go (41678B)

---

 // 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 (
 	"encoding/hex"
 	"fmt"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"runtime"
 	"runtime/debug"
 	"syscall"
 	"time"
 	"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"
 	ctime "modernc.org/libc/time"
 	"modernc.org/libc/unistd"
 	"modernc.org/libc/uuid/uuid"
 )
 
 var (
 	in6_addr_any in.In6_addr
 	_            = X__ctype_b_loc
 )
 
 type (
 	long  = types.X__syscall_slong_t
 	ulong = types.X__syscall_ulong_t
 )
 
 type file uintptr
 
 func (f file) fd() int32      { return (*stdio.FILE)(unsafe.Pointer(f)).F_fileno }
 func (f file) setFd(fd int32) { (*stdio.FILE)(unsafe.Pointer(f)).F_fileno = fd }
 func (f file) err() bool      { return (*stdio.FILE)(unsafe.Pointer(f)).F_flags2&stdio.X_IO_ERR_SEEN != 0 }
 func (f file) setErr()        { (*stdio.FILE)(unsafe.Pointer(f)).F_flags2 |= stdio.X_IO_ERR_SEEN }
 
 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, b)
 	// }
 	return unix.Write(int(fd), b) //TODO use Xwrite
 }
 
 // int fprintf(FILE *stream, const char *format, ...);
 func Xfprintf(t *TLS, stream, format, args uintptr) int32 {
 	n, _ := fwrite((*stdio.FILE)(unsafe.Pointer(stream)).F_fileno, printf(format, args))
 	return int32(n)
 }
 
 // int usleep(useconds_t usec);
 func Xusleep(t *TLS, usec types.X__useconds_t) int32 {
 	time.Sleep(time.Microsecond * time.Duration(usec))
 	return 0
 }
 
 // int getrusage(int who, struct rusage *usage);
 func Xgetrusage(t *TLS, who int32, usage uintptr) int32 {
 	if _, _, err := unix.Syscall(unix.SYS_GETRUSAGE, uintptr(who), usage, 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // 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.Syscall(unix.SYS_CHDIR, path, 0, 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	// if dmesgs {
 	// 	dmesg("%v: %q: ok", origin(1), GoString(path))
 	// }
 	return 0
 }
 
 var localtime ctime.Tm
 
 // struct tm *localtime(const time_t *timep);
 func Xlocaltime(_ *TLS, timep uintptr) uintptr {
 	loc := getLocalLocation()
 	ut := *(*unix.Time_t)(unsafe.Pointer(timep))
 	t := time.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 := getLocalLocation()
 	ut := *(*unix.Time_t)(unsafe.Pointer(timep))
 	t := time.Unix(int64(ut), 0).In(loc)
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_sec = int32(t.Second())
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_min = int32(t.Minute())
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_hour = int32(t.Hour())
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_mday = int32(t.Day())
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_mon = int32(t.Month() - 1)
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_year = int32(t.Year() - 1900)
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_wday = int32(t.Weekday())
 	(*ctime.Tm)(unsafe.Pointer(result)).Ftm_yday = int32(t.YearDay())
 	(*ctime.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 {
 	return Xopen64(t, pathname, flags, args)
 }
 
 // int open(const char *pathname, int flags, ...);
 func Xopen64(t *TLS, pathname uintptr, flags int32, args uintptr) int32 {
 	//TODO- flags |= fcntl.O_LARGEFILE
 	var mode types.Mode_t
 	if args != 0 {
 		mode = (types.Mode_t)(VaUint32(&args))
 	}
 	fdcwd := fcntl.AT_FDCWD
 	n, _, err := unix.Syscall6(unix.SYS_OPENAT, uintptr(fdcwd), pathname, uintptr(flags|unix.O_LARGEFILE), uintptr(mode), 0, 0)
 	if err != 0 {
 		// if dmesgs {
 		// 	dmesg("%v: %q %#x: %v", origin(1), GoString(pathname), flags, err)
 		// }
 		t.setErrno(err)
 		return -1
 	}
 
 	// if dmesgs {
 	// 	dmesg("%v: %q flags %#x mode %#o: fd %v", origin(1), GoString(pathname), flags, mode, n)
 	// }
 	return int32(n)
 }
 
 // int openat(int dirfd, const char *pathname, int flags, mode_t mode);
 func Xopenat(t *TLS, dirfd int32, pathname uintptr, flags int32, mode types.Mode_t) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	fd, _, err := unix.Syscall6(unix.SYS_OPENAT, uintptr(dirfd), pathname, uintptr(flags), uintptr(mode), 0, 0)
 	if err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	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.Syscall(unix.SYS_FSYNC, uintptr(fd), 0, 0); err != 0 {
 		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_GETPW_R_SIZE_MAX:
 		return -1
 	case unistd.X_SC_GETGR_R_SIZE_MAX:
 		return -1
 	case unistd.X_SC_NPROCESSORS_ONLN:
 		return long(runtime.NumCPU())
 	}
 
 	panic(todo("", name))
 }
 
 // int close(int fd);
 func Xclose(t *TLS, fd int32) int32 {
 	if _, _, err := unix.Syscall(unix.SYS_CLOSE, uintptr(fd), 0, 0); err != 0 {
 		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 {
 	n, _, err := unix.Syscall(unix.SYS_GETCWD, buf, uintptr(size), 0)
 	if err != 0 {
 		t.setErrno(err)
 		return 0
 	}
 
 	// if dmesgs {
 	// 	dmesg("%v: %q: ok", origin(1), GoString(buf))
 	// }
 	return n
 }
 
 // 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 {
 	return Xftruncate64(t, fd, length)
 }
 
 // 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 {
 	n, _, err := unix.Syscall(unix.SYS_READ, uintptr(fd), buf, uintptr(count))
 	if err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	// if dmesgs {
 	// 	// dmesg("%v: %d %#x: %#x\n%s", origin(1), fd, count, n, hex.Dump(GoBytes(buf, int(n))))
 	// 	dmesg("%v: %d %#x: %#x", origin(1), fd, count, n)
 	// }
 	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 {
 	const retry = 5
 	var err syscall.Errno
 	for i := 0; i < retry; i++ {
 		var n uintptr
 		switch n, _, err = unix.Syscall(unix.SYS_WRITE, uintptr(fd), buf, uintptr(count)); err {
 		case 0:
 			// if dmesgs {
 			// 	// dmesg("%v: %d %#x: %#x\n%s", origin(1), fd, count, n, hex.Dump(GoBytes(buf, int(n))))
 			// 	dmesg("%v: %d %#x: %#x", origin(1), fd, count, n)
 			// }
 			return types.Ssize_t(n)
 		case errno.EAGAIN:
 			// nop
 		}
 	}
 
 	// if dmesgs {
 	// 	dmesg("%v: fd %v, count %#x: %v", origin(1), fd, count, err)
 	// }
 	t.setErrno(err)
 	return -1
 }
 
 // int fchmod(int fd, mode_t mode);
 func Xfchmod(t *TLS, fd int32, mode types.Mode_t) int32 {
 	if _, _, err := unix.Syscall(unix.SYS_FCHMOD, uintptr(fd), uintptr(mode), 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	// if dmesgs {
 	// 	dmesg("%v: %d %#o: ok", origin(1), fd, mode)
 	// }
 	return 0
 }
 
 // int fchmodat(int dirfd, const char *pathname, mode_t mode, int flags);
 func Xfchmodat(t *TLS, dirfd int32, pathname uintptr, mode types.Mode_t, flags int32) int32 {
 	// From golang.org/x/sys/unix/syscall_linux.go
 	// Linux fchmodat doesn't support the flags parameter. Mimick glibc's behavior
 	// and check the flags. Otherwise the mode would be applied to the symlink
 	// destination which is not what the user expects.
 	if flags&^unix.AT_SYMLINK_NOFOLLOW != 0 {
 		t.setErrno(unix.EINVAL)
 		return -1
 	} else if flags&unix.AT_SYMLINK_NOFOLLOW != 0 {
 		t.setErrno(unix.EOPNOTSUPP)
 		return -1
 	}
 
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_FCHMODAT, uintptr(dirfd), pathname, uintptr(mode)); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	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 {
 	n, _, _ := unix.Syscall(unix.SYS_GETEUID, 0, 0, 0)
 	return types.Uid_t(n)
 }
 
 // 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 {
 		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 {
 		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 {
 		// if dmesgs {
 		// 	dmesg("%v: fd %v: %v", origin(1), sockfd, err)
 		// }
 		t.setErrno(err)
 		return -1
 	}
 
 	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 {
 		t.setErrno(err)
 		return -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), 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 {
 	n, _, _ := unix.Syscall(unix.SYS_UMASK, uintptr(mask), 0, 0)
 	return types.Mode_t(n)
 }
 
 // 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 waitpid(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.Syscall6(unix.SYS_WAIT4, uintptr(pid), wstatus, uintptr(optname), 0, 0, 0)
 	if err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return types.Pid_t(n)
 }
 
 // int uname(struct utsname *buf);
 func Xuname(t *TLS, buf uintptr) int32 {
 	if _, _, err := unix.Syscall(unix.SYS_UNAME, buf, 0, 0); err != 0 {
 		t.setErrno(err)
 		return -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 {
 	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 {
 	return types.Uid_t(os.Getuid())
 }
 
 // pid_t getpid(void);
 func Xgetpid(t *TLS) int32 {
 	return int32(os.Getpid())
 }
 
 // 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 {
 		t.setErrno(errno.EBADF)
 		return -1
 	}
 
 	if fd := (*stdio.FILE)(unsafe.Pointer(stream)).F_fileno; fd >= 0 {
 		return fd
 	}
 
 	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 {
 	return Xfts64_open(t, path_argv, options, compar)
 }
 
 // FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **));
 func Xfts64_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 {
 	return Xfts64_read(t, ftsp)
 }
 
 // FTSENT *fts_read(FTS *ftsp);
 func Xfts64_read(t *TLS, ftsp uintptr) uintptr {
 	f := getObject(ftsp).(*ftstream)
 	if f.x == len(f.s) {
 		t.setErrno(0)
 		return 0
 	}
 
 	r := f.s[f.x]
 	if e := (*fts.FTSENT)(unsafe.Pointer(r)).Ffts_errno; e != 0 {
 		t.setErrno(e)
 	}
 	f.x++
 	return r
 }
 
 // int fts_close(FTS *ftsp);
 func Xfts_close(t *TLS, ftsp uintptr) int32 {
 	return Xfts64_close(t, ftsp)
 }
 
 // int fts_close(FTS *ftsp);
 func Xfts64_close(t *TLS, ftsp uintptr) int32 {
 	getObject(ftsp).(*ftstream).close(t)
 	removeObject(ftsp)
 	return 0
 }
 
 // void tzset (void);
 func Xtzset(t *TLS) {
 	//TODO
 }
 
 var strerrorBuf [100]byte
 
 // char *strerror(int errnum);
 func Xstrerror(t *TLS, errnum int32) uintptr {
 	if dmesgs {
 		dmesg("%v: %v\n%s", origin(1), errnum, debug.Stack())
 	}
 	copy(strerrorBuf[:], fmt.Sprintf("strerror(%d)\x00", errnum))
 	return uintptr(unsafe.Pointer(&strerrorBuf[0]))
 }
 
 // void *dlopen(const char *filename, int flags);
 func Xdlopen(t *TLS, filename uintptr, flags int32) uintptr {
 	panic(todo("%q", GoString(filename)))
 }
 
 // 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 {
 	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 {
 	panic(todo(""))
 }
 
 // int cfsetispeed(struct termios *termios_p, speed_t speed);
 func Xcfsetispeed(t *TLS, termios_p uintptr, speed uint32) int32 {
 	panic(todo(""))
 }
 
 // pid_t fork(void);
 func Xfork(t *TLS) int32 {
 	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", 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
 	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 {
 	return uintptr(unsafe.Pointer(&in6_addr_any))
 }
 
 func Xabort(t *TLS) {
 	// if dmesgs {
 	// 	dmesg("%v:\n%s", origin(1), debug.Stack())
 	// }
 	p := Xmalloc(t, types.Size_t(unsafe.Sizeof(signal.Sigaction{})))
 	if p == 0 {
 		panic("OOM")
 	}
 
 	*(*signal.Sigaction)(unsafe.Pointer(p)) = signal.Sigaction{
 		F__sigaction_handler: struct{ Fsa_handler signal.X__sighandler_t }{Fsa_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 {
 	m, _, err := unix.Syscall(unix.SYS_READ, uintptr(file(stream).fd()), ptr, uintptr(size*nmemb))
 	if err != 0 {
 		file(stream).setErr()
 		return 0
 	}
 
 	// if dmesgs {
 	// 	// dmesg("%v: %d %#x x %#x: %#x\n%s", origin(1), file(stream).fd(), size, nmemb, types.Size_t(m)/size, hex.Dump(GoBytes(ptr, int(m))))
 	// 	dmesg("%v: %d %#x x %#x: %#x", origin(1), file(stream).fd(), size, nmemb, types.Size_t(m)/size)
 	// }
 	return types.Size_t(m) / 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 {
 	m, _, err := unix.Syscall(unix.SYS_WRITE, uintptr(file(stream).fd()), ptr, uintptr(size*nmemb))
 	if err != 0 {
 		file(stream).setErr()
 		return 0
 	}
 
 	// if dmesgs {
 	// 	// dmesg("%v: %d %#x x %#x: %#x\n%s", origin(1), file(stream).fd(), size, nmemb, types.Size_t(m)/size, hex.Dump(GoBytes(ptr, int(m))))
 	// 	dmesg("%v: %d %#x x %#x: %#x", origin(1), file(stream).fd(), size, nmemb, types.Size_t(m)/size)
 	// }
 	return types.Size_t(m) / size
 }
 
 // int fclose(FILE *stream);
 func Xfclose(t *TLS, stream uintptr) int32 {
 	return file(stream).close(t)
 }
 
 // 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 ungetc(int c, FILE *stream);
 func Xungetc(t *TLS, c int32, stream uintptr) int32 {
 	panic(todo(""))
 }
 
 // int fscanf(FILE *stream, const char *format, ...);
 func Xfscanf(t *TLS, stream, format, va uintptr) int32 {
 	panic(todo(""))
 }
 
 // int fputs(const char *s, FILE *stream);
 func Xfputs(t *TLS, s, stream uintptr) int32 {
 	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))
 }
 
 func Xreaddir64(t *TLS, dir uintptr) uintptr {
 	return Xreaddir(t, dir)
 }
 
 func __syscall(r, _ uintptr, errno syscall.Errno) long {
 	if errno != 0 {
 		return long(-errno)
 	}
 
 	return long(r)
 }
 
 func X__syscall1(t *TLS, trap, p1 long) long {
 	return __syscall(unix.Syscall(uintptr(trap), uintptr(p1), 0, 0))
 }
 
 func X__syscall3(t *TLS, trap, p1, p2, p3 long) long {
 	return __syscall(unix.Syscall(uintptr(trap), uintptr(p1), uintptr(p2), uintptr(p3)))
 }
 
 func X__syscall4(t *TLS, trap, p1, p2, p3, p4 long) long {
 	return __syscall(unix.Syscall6(uintptr(trap), uintptr(p1), uintptr(p2), uintptr(p3), uintptr(p4), 0, 0))
 }
 
 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)
 	}
 }
 
 // int setenv(const char *name, const char *value, int overwrite);
 func Xsetenv(t *TLS, name, value uintptr, overwrite int32) int32 {
 	panic(todo(""))
 }
 
 // int unsetenv(const char *name);
 func Xunsetenv(t *TLS, name uintptr) int32 {
 	panic(todo(""))
 }
 
 // int pause(void);
 func Xpause(t *TLS) int32 {
 	err := unix.Pause()
 	if err != nil {
 		t.setErrno(err)
 	}
 
 	return -1
 }
 
 // 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)
 	// }
 	if iovcnt == 0 {
 		panic(todo(""))
 	}
 
 	iovs := make([][]byte, iovcnt)
 	for ; iovcnt != 0; iovcnt-- {
 		base := (*unix.Iovec)(unsafe.Pointer(iov)).Base
 		len := (*unix.Iovec)(unsafe.Pointer(iov)).Len
 		// if dmesgs {
 		// 	dmesg("%v: base %#x len %v", origin(1), base, len)
 		// }
 		if base != nil && len != 0 {
 			iovs = append(iovs, (*RawMem)(unsafe.Pointer(base))[:len:len])
 			iov += unsafe.Sizeof(unix.Iovec{})
 		}
 	}
 	n, err := unix.Writev(int(fd), iovs)
 	if err != nil {
 		// if dmesgs {
 		// 	dmesg("%v: %v", origin(1), err)
 		// }
 		panic(todo(""))
 	}
 
 	return types.Ssize_t(n)
 }
 
 // int __isoc99_sscanf(const char *str, const char *format, ...);
 func X__isoc99_sscanf(t *TLS, str, format, va uintptr) int32 {
 	r := Xsscanf(t, str, format, va)
 	// if dmesgs {
 	// 	dmesg("%v: %q %q: %d", origin(1), GoString(str), GoString(format), r)
 	// }
 	return r
 }
 
 // var ctimeStaticBuf [32]byte
 //
 // // char *ctime(const time_t *timep);
 // func Xctime(t *TLS, timep uintptr) uintptr {
 // 	return Xctime_r(t, timep, uintptr(unsafe.Pointer(&ctimeStaticBuf[0])))
 // }
 //
 // // char *ctime_r(const time_t *timep, char *buf);
 // func Xctime_r(t *TLS, timep, buf uintptr) uintptr {
 // 	ut := *(*unix.Time_t)(unsafe.Pointer(timep))
 // 	tm := time.Unix(int64(ut), 0).Local()
 // 	s := tm.Format(time.ANSIC) + "\n\x00"
 // 	copy((*RawMem)(unsafe.Pointer(buf))[:26:26], s)
 // 	return buf
 // }
 
 // 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)
 }
 
 // int fstatfs(int fd, struct statfs *buf);
 func Xfstatfs(t *TLS, fd int32, buf uintptr) int32 {
 	if err := unix.Fstatfs(int(fd), (*unix.Statfs_t)(unsafe.Pointer(buf))); err != nil {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // ssize_t getrandom(void *buf, size_t buflen, unsigned int flags);
 func Xgetrandom(t *TLS, buf uintptr, buflen size_t, flags uint32) ssize_t {
 	n, err := unix.Getrandom((*RawMem)(unsafe.Pointer(buf))[:buflen], int(flags))
 	if err != nil {
 		t.setErrno(err)
 		return -1
 	}
 
 	return ssize_t(n)
 }
 
 // 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 {
 	if err := unix.Fadvise(int(fd), int64(offset), int64(len), int(advice)); err != nil {
 		return int32(err.(unix.Errno))
 	}
 
 	return 0
 }
 
 // int fgetc(FILE *stream);
 func Xfgetc(t *TLS, stream uintptr) int32 {
 	fd := int((*stdio.FILE)(unsafe.Pointer(stream)).F_fileno)
 	var buf [1]byte
 	if n, _ := unix.Read(fd, buf[:]); n != 0 {
 		return int32(buf[0])
 	}
 
 	return stdio.EOF
 }
 
 // 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
 }
 
 // int mkdirat(int dirfd, const char *pathname, mode_t mode);
 func Xmkdirat(t *TLS, dirfd int32, pathname uintptr, mode types.Mode_t) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_MKDIRAT, uintptr(dirfd), pathname, uintptr(mode)); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int symlinkat(const char *target, int newdirfd, const char *linkpath);
 func Xsymlinkat(t *TLS, target uintptr, newdirfd int32, linkpath uintptr) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_SYMLINKAT, target, uintptr(newdirfd), linkpath); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int utimensat(int dirfd, const char *pathname, const struct timespec times[2], int flags);
 func Xutimensat(t *TLS, dirfd int32, pathname, times uintptr, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall6(unix.SYS_UTIMENSAT, uintptr(dirfd), pathname, times, uintptr(flags), 0, 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int unlinkat(int dirfd, const char *pathname, int flags);
 func Xunlinkat(t *TLS, dirfd int32, pathname uintptr, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_UNLINKAT, uintptr(dirfd), pathname, uintptr(flags)); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int faccessat(int dirfd, const char *pathname, int mode, int flags);
 func Xfaccessat(t *TLS, dirfd int32, pathname uintptr, mode, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_FACCESSAT, uintptr(dirfd), pathname, uintptr(mode)); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int renameat2(int olddirfd, const char *oldpath,	int newdirfd, const char *newpath, unsigned int flags);
 func Xrenameat2(t *TLS, olddirfd int32, oldpath uintptr, newdirfd int32, newpath uintptr, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall6(unix.SYS_RENAMEAT2, uintptr(olddirfd), oldpath, uintptr(newdirfd), newpath, uintptr(flags), 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int mknodat(int dirfd, const char *pathname, mode_t mode, dev_t dev);
 func Xmknodat(t *TLS, dirfd int32, pathname uintptr, mode types.Mode_t, dev types.Dev_t) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall6(unix.SYS_MKNODAT, uintptr(dirfd), pathname, uintptr(mode), uintptr(dev), 0, 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int fchownat(int dirfd, const char *pathname, uid_t owner, gid_t group, int flags);
 func Xfchownat(t *TLS, dirfd int32, pathname uintptr, uid types.Uid_t, gid types.Gid_t, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall6(unix.SYS_FCHOWNAT, uintptr(dirfd), pathname, uintptr(uid), uintptr(gid), uintptr(flags), 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int linkat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath, int flags);
 func Xlinkat(t *TLS, olddirfd int32, oldpath uintptr, newdirfd int32, newpath uintptr, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall6(unix.SYS_LINKAT, uintptr(olddirfd), oldpath, uintptr(newdirfd), newpath, uintptr(flags), 0); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // int pipe2(int pipefd[2], int flags);
 func Xpipe2(t *TLS, pipefd uintptr, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_PIPE2, pipefd, uintptr(flags), 0); err != 0 {
 		t.setErrno(t)
 		return -1
 	}
 
 	return 0
 }
 
 // int dup3(int oldfd, int newfd, int flags);
 func Xdup3(t *TLS, oldfd int32, newfd int32, flags int32) int32 {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	if _, _, err := unix.Syscall(unix.SYS_DUP3, uintptr(oldfd), uintptr(newfd), uintptr(flags)); err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return 0
 }
 
 // ssize_t readlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz);
 func Xreadlinkat(t *TLS, dirfd int32, pathname, buf uintptr, bufsiz types.Size_t) types.Ssize_t {
 	// From golang.org/x/sys/unix/zsyscall_linux.go
 	n, _, err := unix.Syscall6(unix.SYS_READLINKAT, uintptr(dirfd), pathname, buf, uintptr(bufsiz), 0, 0)
 	if err != 0 {
 		t.setErrno(err)
 		return -1
 	}
 
 	return types.Ssize_t(n)
 }
 
 // int nanosleep(const struct timespec *req, struct timespec *rem);
 func Xnanosleep(t *TLS, req, rem uintptr) int32 {
 	v := *(*ctime.Timespec)(unsafe.Pointer(req))
 	time.Sleep(time.Second*time.Duration(v.Ftv_sec) + time.Duration(v.Ftv_nsec))
 	return 0
 }