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72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* Copyright (C) 2016 Eistec AB
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* 2018 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup sys
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* @{
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*
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* @file
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* @brief STDIO binding for the VFS module
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*
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include "assert.h"
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#include "stdio_base.h"
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#include "vfs.h"
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static ssize_t _stdio_read(vfs_file_t *filp, void *dest, size_t nbytes)
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{
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int fd = filp->private_data.value;
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if (fd != STDIN_FILENO) {
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return -EBADF;
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}
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return stdio_read(dest, nbytes);
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}
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static ssize_t _stdio_write(vfs_file_t *filp, const void *src, size_t nbytes)
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{
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int fd = filp->private_data.value;
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if (fd == STDIN_FILENO) {
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return -EBADF;
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}
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return stdio_write(src, nbytes);
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}
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/**
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* @brief VFS file operation table for stdin/stdout/stderr
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*/
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static vfs_file_ops_t _stdio_ops = {
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.read = _stdio_read,
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.write = _stdio_write,
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};
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void vfs_bind_stdio(void)
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{
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int fd;
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fd = vfs_bind(STDIN_FILENO, O_RDONLY, &_stdio_ops, (void *)STDIN_FILENO);
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/* Is there a better way to handle errors on init? */
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assert(fd >= 0);
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fd = vfs_bind(STDOUT_FILENO, O_WRONLY, &_stdio_ops, (void *)STDOUT_FILENO);
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assert(fd >= 0);
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fd = vfs_bind(STDERR_FILENO, O_WRONLY, &_stdio_ops, (void *)STDERR_FILENO);
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assert(fd >= 0);
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/* we are not interested in the return value in case assert is not
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* compiled in */
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(void)fd;
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}
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