Example #1
0
func Pack(buf co.Buf, i interface{}) error {
	switch v := i.(type) {
	case *syscall.Statfs_t:
		return buf.Pack(native.StatfsToLinux(v))
	default:
		return argjoy.NoMatch
	}
}
Example #2
0
func (k *PosixKernel) Lstat(path string, buf co.Buf) uint64 {
	var stat syscall.Stat_t
	if err := syscall.Lstat(path, &stat); err != nil {
		return Errno(err)
	}
	targetStat := NewTargetStat(&stat, k.U.OS(), k.U.Bits())
	if err := buf.Pack(targetStat); err != nil {
		panic(err)
	}
	return 0
}
Example #3
0
func (k *PosixKernel) Fstat(fd co.Fd, buf co.Buf) uint64 {
	var stat syscall.Stat_t
	if err := syscall.Fstat(int(fd), &stat); err != nil {
		return Errno(err)
	}
	targetStat := NewTargetStat(&stat, k.U.OS(), k.U.Bits())
	if err := buf.Pack(targetStat); err != nil {
		panic(err)
	}
	return 0
}
Example #4
0
func (k *PosixKernel) Getcwd(buf co.Buf, size co.Len) uint64 {
	wd, _ := os.Getwd()
	size -= 1
	if co.Len(len(wd)) > size {
		wd = wd[:size]
	}
	if err := buf.Pack(wd + "\x00"); err != nil {
		return UINT64_MAX // FIXME
	}
	return 0
}
Example #5
0
func (k *MachKernel) MachVmAllocate(unk int, size co.Len, addrOut co.Buf) uint64 {
	mmap, err := k.U.Mmap(0, uint64(size))
	if err != nil {
		return posix.UINT64_MAX // FIXME
	}
	var tmp [8]byte
	buf, _ := k.U.PackAddr(tmp[:], mmap.Addr)
	if err := addrOut.Pack(buf); err != nil {
		return posix.UINT64_MAX // FIXME
	}
	return 0
}
Example #6
0
func (k *PosixKernel) Recvfrom(fd co.Fd, buf co.Buf, size co.Len, flags int, from co.Buf, fromlen co.Len) uint64 {
	p := make([]byte, size)
	if n, _, err := syscall.Recvfrom(int(fd), p, flags); err != nil {
		// TODO: need kernel.Pack() so we can pack a sockaddr into from
		if err := buf.Pack(p); err != nil {
			return UINT64_MAX // FIXME
		}
		return uint64(n)
	} else {
		return UINT64_MAX // FIXME
	}
}
Example #7
0
func (k *PosixKernel) Stat(path string, buf co.Buf) uint64 {
	// TODO: centralize path hook
	if strings.Contains(path, "/lib/") {
		path = k.U.PrefixPath(path, false)
	}
	var stat syscall.Stat_t
	if err := syscall.Stat(path, &stat); err != nil {
		return Errno(err)
	}
	targetStat := NewTargetStat(&stat, k.U.OS(), k.U.Bits())
	if err := buf.Pack(targetStat); err != nil {
		panic(err)
	}
	return 0
}
Example #8
0
func (k *PosixKernel) Getsockopt(fd co.Fd, level, opt int, valueOut, valueSizeOut co.Buf) uint64 {
	// TODO: dispatch/support both addr and int types
	value, err := syscall.GetsockoptInt(int(fd), level, opt)
	if err != nil {
		return Errno(err)
	}
	value32 := int32(value)
	size := int32(4)
	if err := valueOut.Pack(value32); err != nil {
		return UINT64_MAX // FIXME
	}
	if err := valueSizeOut.Pack(size); err != nil {
		return UINT64_MAX // FIXME
	}
	return 0
}
Example #9
0
func (k *PosixKernel) Getgroups(count int, buf co.Buf) uint64 {
	groups, err := syscall.Getgroups()
	if err != nil {
		return Errno(err)
	}
	length := uint64(len(groups))
	if count > 0 {
		if count < len(groups) {
			groups = groups[:count]
		}
		tmp := make([]uint32, len(groups))
		for i, v := range groups {
			tmp[i] = uint32(v)
		}
		if err := buf.Pack(tmp); err != nil {
			return UINT64_MAX // FIXME
		}
	}
	return length
}
Example #10
0
func (k *PosixKernel) Readlink(path string, buf co.Buf, size co.Len) uint64 {
	// TODO: full proc emulation layer
	// maybe have a syscall pre-hook for this after ghostrace makes it generic
	// or specifically have path hooks and use that to implement prefix as well
	var name string
	var err error
	if path == "/proc/self/exe" && k.U.OS() == "linux" {
		name = k.U.Exe()
	} else {
		name, err = os.Readlink(path)
		if err != nil {
			return UINT64_MAX // FIXME
		}
	}
	if len(name) > int(size)-1 {
		name = name[:size-1]
	}
	if err := buf.Pack([]byte(name + "\x00")); err != nil {
		return UINT64_MAX // FIXME
	}
	return uint64(len(name))
}
Example #11
0
func Uname(buf co.Buf, un *models.Uname) {
	buf.Pack(un)
}