1//go:build !plan9 && !aix
  2
  3package sys
  4
  5import "syscall"
  6
  7func syscallToErrno(err error) (Errno, bool) {
  8	errno, ok := err.(syscall.Errno)
  9	if !ok {
 10		return 0, false
 11	}
 12	switch errno {
 13	case 0:
 14		return 0, true
 15	case syscall.EACCES:
 16		return EACCES, true
 17	case syscall.EAGAIN:
 18		return EAGAIN, true
 19	case syscall.EBADF:
 20		return EBADF, true
 21	case syscall.EEXIST:
 22		return EEXIST, true
 23	case syscall.EFAULT:
 24		return EFAULT, true
 25	case syscall.EINTR:
 26		return EINTR, true
 27	case syscall.EINVAL:
 28		return EINVAL, true
 29	case syscall.EIO:
 30		return EIO, true
 31	case syscall.EISDIR:
 32		return EISDIR, true
 33	case syscall.ELOOP:
 34		return ELOOP, true
 35	case syscall.ENAMETOOLONG:
 36		return ENAMETOOLONG, true
 37	case syscall.ENOENT:
 38		return ENOENT, true
 39	case syscall.ENOSYS:
 40		return ENOSYS, true
 41	case syscall.ENOTDIR:
 42		return ENOTDIR, true
 43	case syscall.ERANGE:
 44		return ERANGE, true
 45	case syscall.ENOTEMPTY:
 46		return ENOTEMPTY, true
 47	case syscall.ENOTSOCK:
 48		return ENOTSOCK, true
 49	case syscall.ENOTSUP:
 50		return ENOTSUP, true
 51	case syscall.EPERM:
 52		return EPERM, true
 53	case syscall.EROFS:
 54		return EROFS, true
 55	default:
 56		return EIO, true
 57	}
 58}
 59
 60// Unwrap is a convenience for runtime.GOOS which define syscall.Errno.
 61func (e Errno) Unwrap() error {
 62	switch e {
 63	case 0:
 64		return nil
 65	case EACCES:
 66		return syscall.EACCES
 67	case EAGAIN:
 68		return syscall.EAGAIN
 69	case EBADF:
 70		return syscall.EBADF
 71	case EEXIST:
 72		return syscall.EEXIST
 73	case EFAULT:
 74		return syscall.EFAULT
 75	case EINTR:
 76		return syscall.EINTR
 77	case EINVAL:
 78		return syscall.EINVAL
 79	case EIO:
 80		return syscall.EIO
 81	case EISDIR:
 82		return syscall.EISDIR
 83	case ELOOP:
 84		return syscall.ELOOP
 85	case ENAMETOOLONG:
 86		return syscall.ENAMETOOLONG
 87	case ENOENT:
 88		return syscall.ENOENT
 89	case ENOSYS:
 90		return syscall.ENOSYS
 91	case ENOTDIR:
 92		return syscall.ENOTDIR
 93	case ENOTEMPTY:
 94		return syscall.ENOTEMPTY
 95	case ENOTSOCK:
 96		return syscall.ENOTSOCK
 97	case ENOTSUP:
 98		return syscall.ENOTSUP
 99	case EPERM:
100		return syscall.EPERM
101	case EROFS:
102		return syscall.EROFS
103	default:
104		return syscall.EIO
105	}
106}