32 lines
658 B
C
32 lines
658 B
C
#ifndef _GPXE_POSIX_IO_H
|
|
#define _GPXE_POSIX_IO_H
|
|
|
|
/** @file
|
|
*
|
|
* POSIX-like I/O
|
|
*
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <gpxe/uaccess.h>
|
|
|
|
extern int open ( const char *uri_string );
|
|
extern ssize_t read_user ( int fd, userptr_t buffer,
|
|
off_t offset, size_t len );
|
|
extern ssize_t fsize ( int fd );
|
|
extern int close ( int fd );
|
|
|
|
/**
|
|
* Read data from file
|
|
*
|
|
* @v fd File descriptor
|
|
* @v buf Data buffer
|
|
* @v len Maximum length to read
|
|
* @ret len Actual length read, or negative error number
|
|
*/
|
|
static inline ssize_t read ( int fd, void *buf, size_t len ) {
|
|
return read_user ( fd, virt_to_user ( buf ), 0, len );
|
|
}
|
|
|
|
#endif /* _GPXE_POSIX_IO_H */
|