native_vfs.c
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/*
* Copyright (C) 2016 Kaspar Schleiser <kaspar@schleiser.de>
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for
* more details.
*/
/**
* @ingroup native_cpu
* @{
*
* @file
* @brief VFS wrappers for POSIX file I/O functions
*
* @author Kaspar Schleiser <kaspar@schleiser.de>
*/
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <unistd.h>
#include "vfs.h"
int open(const char *name, int flags, ...)
{
unsigned mode = 0;
if ((flags & O_CREAT)) {
va_list ap;
va_start(ap, flags);
mode = va_arg(ap, unsigned);
va_end(ap);
}
int fd = vfs_open(name, flags, mode);
if (fd < 0) {
/* vfs returns negative error codes */
errno = -fd;
return -1;
}
return fd;
}
ssize_t read(int fd, void *dest, size_t count)
{
int res = vfs_read(fd, dest, count);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return res;
}
ssize_t write(int fd, const void *src, size_t count)
{
int res = vfs_write(fd, src, count);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return res;
}
int close(int fd)
{
int res = vfs_close(fd);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return res;
}
int fcntl(int fd, int cmd, ...)
{
unsigned long arg;
va_list ap;
va_start(ap, cmd);
arg = va_arg(ap, unsigned long);
va_end(ap);
int res = vfs_fcntl(fd, cmd, arg);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return res;
}
off_t lseek(int fd, off_t off, int whence)
{
int res = vfs_lseek(fd, off, whence);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return res;
}
int fstat(int fd, struct stat *buf)
{
int res = vfs_fstat(fd, buf);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return 0;
}
int stat(const char *name, struct stat *st)
{
int res = vfs_stat(name, st);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return 0;
}
int unlink(const char *path)
{
int res = vfs_unlink(path);
if (res < 0) {
/* vfs returns negative error codes */
errno = -res;
return -1;
}
return 0;
}
/** @} */