ThrowExceptionForLastErrorIf

Throws an exception that best matches the last error returned from Mono.Unix.Native.Stdlib.GetLastError if retval is -1.

Syntax

public static void ThrowExceptionForLastErrorIf (int retval)

Parameters

retval
A int containing the return value of a method from Mono.Unix.Native.Syscall.

Exceptions

Type Reason
ArgumentException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EBADF or Mono.Unix.Native.Errno.EINVAL.
ArgumentOutOfRangeException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ERANGE.
InvalidOperationException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EOPNOTSUPP or Mono.Unix.Native.Errno.EPERM.
InvalidProgramException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENOEXEC.
NullReferenceException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EFAULT.
OverflowException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EOVERFLOW.
UnauthorizedAccessException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EACCES or Mono.Unix.Native.Errno.EISDIR.
System.IO.DirectoryNotFoundException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENOTDIR.
System.IO.FileNotFoundException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENOENT.
System.IO.IOException Mono.Unix.Native.Stdlib.GetLastError is one of: Mono.Unix.Native.Errno.EIO, Mono.Unix.Native.Errno.ENOSPC, Mono.Unix.Native.Errno.ENOTEMPTY, Mono.Unix.Native.Errno.ENXIO, Mono.Unix.Native.Errno.EROFS, Mono.Unix.Native.Errno.ESPIPE.
System.IO.PathTooLongException Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENAMETOOLONG.
Mono.Unix.UnixIOException Mono.Unix.Native.Stdlib.GetLastError is not any of the above error values.

Type	Reason
ArgumentException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EBADF or Mono.Unix.Native.Errno.EINVAL.
ArgumentOutOfRangeException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ERANGE.
InvalidOperationException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EOPNOTSUPP or Mono.Unix.Native.Errno.EPERM.
InvalidProgramException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENOEXEC.
NullReferenceException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EFAULT.
OverflowException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EOVERFLOW.
UnauthorizedAccessException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.EACCES or Mono.Unix.Native.Errno.EISDIR.
System.IO.DirectoryNotFoundException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENOTDIR.
System.IO.FileNotFoundException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENOENT.
System.IO.IOException	Mono.Unix.Native.Stdlib.GetLastError is one of: Mono.Unix.Native.Errno.EIO, Mono.Unix.Native.Errno.ENOSPC, Mono.Unix.Native.Errno.ENOTEMPTY, Mono.Unix.Native.Errno.ENXIO, Mono.Unix.Native.Errno.EROFS, Mono.Unix.Native.Errno.ESPIPE.
System.IO.PathTooLongException	Mono.Unix.Native.Stdlib.GetLastError is Mono.Unix.Native.Errno.ENAMETOOLONG.
Mono.Unix.UnixIOException	Mono.Unix.Native.Stdlib.GetLastError is not any of the above error values.

Remarks

If retval is -1, then this method is equivalent to calling UnixMarshal.ThrowExceptionForError (Mono.Unix.Native.Stdlib.GetLastError ()). Otherwise, nothing is done.

If the exception thrown is not a Mono.Unix.UnixIOException, then the exception's Exception.InnerException property will be set to a Mono.Unix.UnixIOException instance wrapping errno, if possible.

Note: ArgumentOutOfRangeException does not have its Exception.InnerException property set, as ArgumentOutOfRangeException does not provide a constructor that sets this property.

Requirements

Namespace: Mono.Unix
Assembly: Mono.Posix (in Mono.Posix.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0