d2/d16/read_8c_source.html

#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#include <sys/fs.h>


#include "user/common/syscalls.h"


size_t read(fd_t fd, void* buffer, size_t count)

{

    uint64_t result = _syscall_read(fd, buffer, count);

    if (result == ERR)

    {

        errno = _syscall_errno();

    }

    return result;

}


buffer
EFI_PHYSICAL_ADDRESS buffer
Definition main.c:237

errno
#define errno
Error number variable.
Definition errno.h:27

read
size_t read(fd_t fd, void *buffer, size_t count)
System call for reading from files.
Definition read.c:8

ERR
#define ERR
Integer error value.
Definition ERR.h:17

fd_t
__UINT64_TYPE__ fd_t
File descriptor type.
Definition fd_t.h:10

fs.h

count
static atomic_long count
Definition main.c:11

stdarg.h

uint64_t
__UINT64_TYPE__ uint64_t
Definition stdint.h:17

stdio.h

stdlib.h

syscalls.h

_syscall_errno
static errno_t _syscall_errno(void)
Definition syscalls.h:107

_syscall_read
static uint64_t _syscall_read(fd_t fd, void *buffer, size_t count)
Definition syscalls.h:147