esp-idf/components/lwip/port/esp32/no_vfs_syscalls.c
Ivan Grokhotkov b203ac7b02 lwip: handle CONFIG_VFS_SUPPORT_IO=n and CONFIG_VFS_SUPPORT_SELECT=n
* If CONFIG_VFS_SUPPORT_IO=y, keep everything as it is now
* If CONFIG_VFS_SUPPORT_IO=n, defined syscalls which LwIP can
  implement, such as read/write/close
* Make LWIP-only select implementation dependent on
  CONFIG_VFS_SUPPORT_SELECT, deprecate CONFIG_LWIP_USE_ONLY_LWIP_SELECT
2020-03-20 14:03:44 +01:00

84 lines
2.3 KiB
C

// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <string.h>
#include <stdbool.h>
#include <stdarg.h>
#include <sys/errno.h>
#include <sys/lock.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include "sdkconfig.h"
#include "lwip/sockets.h"
#include "lwip/sys.h"
#ifdef CONFIG_VFS_SUPPORT_IO
#error This file should only be built when CONFIG_VFS_SUPPORT_IO=n
#endif
/* Default implementations of read/write provided in newlib component,
* used as a fallback for console I/O.
*/
extern ssize_t _write_r_console(struct _reent *r, int fd, const void * data, size_t size);
extern ssize_t _read_r_console(struct _reent *r, int fd, const void * data, size_t size);
ssize_t _write_r(struct _reent *r, int fd, const void * data, size_t size)
{
if (fd < LWIP_SOCKET_OFFSET) {
return _write_r_console(r, fd, data, size);
}
return lwip_write(fd, data, size);
}
ssize_t _read_r(struct _reent *r, int fd, void * dst, size_t size)
{
if (fd < LWIP_SOCKET_OFFSET) {
return _read_r_console(r, fd, dst, size);
}
return lwip_read(fd, dst, size);
}
int _close_r(struct _reent *r, int fd)
{
if (fd < LWIP_SOCKET_OFFSET) {
errno = ENOSYS;
return -1;
}
return lwip_close(fd);
}
int _fcntl_r(struct _reent *r, int fd, int cmd, int arg)
{
return lwip_fcntl(fd, cmd, arg);
}
int ioctl(int fd, int cmd, ...)
{
va_list args;
va_start(args, cmd);
int res = lwip_ioctl(fd, cmd, va_arg(args, void*));
va_end(args);
return res;
}
int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *timeout)
{
return lwip_select(nfds, readfds, writefds, errorfds, timeout);
}
void esp_vfs_lwip_sockets_register(void)
{
/* Doesn't register anything, just a hook to force linking this file */
}