PXENV_FILE_SELECT
[PXE FILE API]

FILE SELECT. More...

Data Structures
struct	s_PXENV_FILE_SELECT
	Parameter block for pxenv_file_select(). More...
Defines
#define	PXENV_FILE_SELECT   0x00e2
	PXE API function code for pxenv_file_select().
#define	RDY_READ   0x0001
	File is ready for reading.
Typedefs
typedef struct s_PXENV_FILE_SELECT	PXENV_FILE_SELECT_t
Functions
PXENV_EXIT_t	pxenv_file_select (struct s_PXENV_FILE_SELECT *file_select)
	FILE SELECT.

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Detailed Description

FILE SELECT.

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Define Documentation

#define PXENV_FILE_SELECT   0x00e2

PXE API function code for pxenv_file_select().

Definition at line 1666 of file pxe_api.h.

Referenced by pxe_api_call().

#define RDY_READ   0x0001

File is ready for reading.

Definition at line 1669 of file pxe_api.h.

Referenced by pxenv_file_select().

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Typedef Documentation

typedef struct s_PXENV_FILE_SELECT PXENV_FILE_SELECT_t

Definition at line 1678 of file pxe_api.h.

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Function Documentation

PXENV_EXIT_t pxenv_file_select

(

struct s_PXENV_FILE_SELECT *

file_select

)

FILE SELECT.

Parameters:

	file_select	Pointer to a struct s_PXENV_FILE_SELECT
	s_PXENV_FILE_SELECT::FileHandle	File handle

Return values:

	PXENV_EXIT_SUCCESS	File has been checked for readiness
	PXENV_EXIT_FAILURE	File has not been checked for readiness
	s_PXENV_FILE_SELECT::Status	PXE status code
	s_PXENV_FILE_SELECT::Ready	Indication of readiness

Definition at line 114 of file pxe_file.c.

References DBG, s_PXENV_FILE_SELECT::FileHandle, PXENV_EXIT_FAILURE, PXENV_EXIT_SUCCESS, PXENV_STATUS, PXENV_STATUS_SUCCESS, RDY_READ, s_PXENV_FILE_SELECT::Ready, select(), and s_PXENV_FILE_SELECT::Status.

Referenced by pxe_api_call().

                                                                           {
        fd_set fdset;
        int ready;

        DBG ( "PXENV_FILE_SELECT %d", file_select->FileHandle );

        FD_ZERO ( &fdset );
        FD_SET ( file_select->FileHandle, &fdset );
        if ( ( ready = select ( &fdset, 0 ) ) < 0 ) {
                file_select->Status = PXENV_STATUS ( ready );
                return PXENV_EXIT_FAILURE;
        }

        file_select->Ready = ( ready ? RDY_READ : 0 );
        file_select->Status = PXENV_STATUS_SUCCESS;
        return PXENV_EXIT_SUCCESS;
}