PR_GetDescType

Describes what type of file is referenced by a specified file descriptor.

Syntax

#include <prio.h> 

PRDescType PR_GetDescType(PRFileDesc *file);

Parameter

The function has the following parameter:

file

A pointer to a PRFileDesc object whose descriptor type is to be returned.

Returns

The function returns a PRDescType enumeration constant that describes the type of file.

Description

The PRDescType enumeration is defined as follows:

typedef enum PRDescType {
  PR_DESC_FILE       = 1,
  PR_DESC_SOCKET_TCP = 2,
  PR_DESC_SOCKET_UDP = 3,
  PR_DESC_LAYERED    = 4
} PRDescType;

The enumeration has the following enumerators:

PR_DESC_FILE

The PRFileDesc object represents a normal file.

PR_DESC_SOCKET_TCP

The PRFileDesc object represents a TCP socket.

PR_DESC_SOCKET_UDP

The PRFileDesc object represents a UDP socket.

PR_DESC_LAYERED

The PRFileDesc object is a layered file descriptor.