PXENV_FILE_OPEN
[PXE FILE API]

FILE OPEN. More...

Data Structures
struct	s_PXENV_FILE_OPEN
	Parameter block for pxenv_file_open(). More...
Defines
#define	PXENV_FILE_OPEN   0x00e0
	PXE API function code for pxenv_file_open().
Typedefs
typedef struct s_PXENV_FILE_OPEN	PXENV_FILE_OPEN_t
Functions
PXENV_EXIT_t	pxenv_file_open (struct s_PXENV_FILE_OPEN *file_open)
	FILE OPEN.

---

Detailed Description

FILE OPEN.

---

Define Documentation

#define PXENV_FILE_OPEN   0x00e0

PXE API function code for pxenv_file_open().

Definition at line 1619 of file pxe_api.h.

Referenced by pxe_api_call().

---

Typedef Documentation

typedef struct s_PXENV_FILE_OPEN PXENV_FILE_OPEN_t

Definition at line 1629 of file pxe_api.h.

---

Function Documentation

PXENV_EXIT_t pxenv_file_open

(

struct s_PXENV_FILE_OPEN *

file_open

)

FILE OPEN.

Parameters:

	file_open	Pointer to a struct s_PXENV_FILE_OPEN
	s_PXENV_FILE_OPEN::FileName	URL of file to open

Return values:

	PXENV_EXIT_SUCCESS	File was opened
	PXENV_EXIT_FAILURE	File was not opened
	s_PXENV_FILE_OPEN::Status	PXE status code
	s_PXENV_FILE_OPEN::FileHandle	Handle of opened file

Definition at line 52 of file pxe_file.c.

References copy_from_user(), DBG, s_PXENV_FILE_OPEN::FileHandle, s_PXENV_FILE_OPEN::FileName, s_SEGOFF16::offset, open(), PXENV_EXIT_FAILURE, PXENV_EXIT_SUCCESS, PXENV_STATUS, PXENV_STATUS_SUCCESS, real_to_user(), s_SEGOFF16::segment, s_PXENV_FILE_OPEN::Status, and strlen_user().

Referenced by pxe_api_call().

                                                                     {
        userptr_t filename;
        size_t filename_len;
        int fd;

        DBG ( "PXENV_FILE_OPEN" );

        /* Copy name from external program, and open it */
        filename = real_to_user ( file_open->FileName.segment,
                              file_open->FileName.offset );
        filename_len = strlen_user ( filename, 0 );
        {
                char uri_string[ filename_len + 1 ];

                copy_from_user ( uri_string, filename, 0,
                                 sizeof ( uri_string ) );
                DBG ( " %s", uri_string );
                fd = open ( uri_string );
        }

        if ( fd < 0 ) {
                file_open->Status = PXENV_STATUS ( fd );
                return PXENV_EXIT_FAILURE;
        }

        DBG ( " as file %d", fd );

        file_open->FileHandle = fd;
        file_open->Status = PXENV_STATUS_SUCCESS;
        return PXENV_EXIT_SUCCESS;
}