First commit XiUOS

lib/newlib/fs_syscalls.c

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+/**
+* @file fs_syscalls.c
+* @brief support newlib file system
+* @version 1.0 
+* @author AIIT XUOS Lab
+* @date 2020-09-23
+*/
+
+/*************************************************
+File name: fs_syscalls.c
+Description: support newlib file system
+Others: take RT-Thread v4.0.2/components/libc/compilers/newlib/syscalls.c for references
+                https://github.com/RT-Thread/rt-thread/tree/v4.0.2
+History: 
+1. Date: 2020-09-23
+Author: AIIT XUOS Lab
+Modification: Use file system functions
+*************************************************/
+
+#include <reent.h>
+#include <sys/errno.h>
+#include <stdio.h>
+
+#include <xiuos.h>
+
+int _fstat_r(struct _reent *ptr, int fd, struct stat *pstat)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+int _link_r(struct _reent *ptr, const char *old, const char *new)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+void * _sbrk_r(struct _reent *ptr, ptrdiff_t incr)
+{
+    return NONE;
+}
+
+int _wait_r(struct _reent *ptr, int *status)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+#ifdef FS_VFS
+
+#include <iot-vfs_posix.h>
+
+int _close_r(struct _reent *ptr, int fd)
+{
+    return close(fd);
+}
+
+int _isatty_r(struct _reent *ptr, int fd)
+{
+    if (fd >=0 && fd < 3)
+        return 1;
+    
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+_off_t _lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence)
+{
+    return lseek(fd, pos, whence);
+}
+
+int _open_r(struct _reent *ptr, const char *file, int flags, int mode)
+{
+    return open(file, flags, mode);
+}
+
+_ssize_t _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
+{
+    return read(fd, buf, nbytes);
+}
+
+int _stat_r(struct _reent *ptr, const char *file, struct stat *pstat)
+{
+    return stat(file, pstat);
+}
+
+int _unlink_r(struct _reent *ptr, const char *file)
+{
+    return unlink(file);
+}
+
+_ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
+{
+    return write(fd, buf, nbytes);
+}
+
+#else /* FS_VFS */
+
+int _close_r(struct _reent *ptr, int fd)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+int _isatty_r(struct _reent *ptr, int fd)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+_off_t _lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+int _open_r(struct _reent *ptr, const char *file, int flags, int mode)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+_ssize_t _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+int _stat_r(struct _reent *ptr, const char *file, struct stat *pstat)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+int _unlink_r(struct _reent *ptr, const char *file)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+_ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
+{
+    ptr->_errno = ENOTSUP;
+    return -1;
+}
+
+#endif /* FS_VFS */