[libc] Adjust libc.

1. Move struct stat to libc_stat.h;
2. Defined a new FD_SET macros in libc_fdset.h.

2 files changed, 87 insertions, 0 deletions

diff --git a/include/libc/libc_fdset.h b/include/libc/libc_fdset.h
new file mode 100644
index 0000000000..0056d61cc5
--- /dev/null
+++ b/include/libc/libc_fdset.h
@@ -0,0 +1,67 @@
+/*
+ * File      : libc_errno.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2017, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-10-30     Bernard      The first version
+ */
+
+#ifndef LIBC_FDSET_H__
+#define LIBC_FDSET_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_NEWLIB
+#include <sys/types.h>
+#else
+
+#ifdef RT_USING_DFS_NET
+
+#ifdef FD_SETSIZE
+#undef FD_SETSIZE
+#endif
+
+#define FD_SETSIZE      DFS_FD_MAX
+#endif
+
+#  define	NBBY	8		/* number of bits in a byte */
+
+typedef	long	fd_mask;
+#  define	NFDBITS	(sizeof (fd_mask) * NBBY)	/* bits per mask */
+#  ifndef	howmany
+#	define	howmany(x,y)	(((x)+((y)-1))/(y))
+#  endif
+
+/* We use a macro for fd_set so that including Sockets.h afterwards
+   can work.  */
+typedef	struct _types_fd_set {
+	fd_mask	fds_bits[howmany(FD_SETSIZE, NFDBITS)];
+} _types_fd_set;
+
+#define fd_set _types_fd_set
+
+#  define	FD_SET(n, p)	((p)->fds_bits[(n)/NFDBITS] |= (1L << ((n) % NFDBITS)))
+#  define	FD_CLR(n, p)	((p)->fds_bits[(n)/NFDBITS] &= ~(1L << ((n) % NFDBITS)))
+#  define	FD_ISSET(n, p)	((p)->fds_bits[(n)/NFDBITS] & (1L << ((n) % NFDBITS)))
+#  define   FD_ZERO(p)      memset((void*)(p), 0, sizeof(*(p)))
+
+#endif
+
+#endif
+
diff --git a/include/libc/libc_stat.h b/include/libc/libc_stat.h
index 1622bedd84..36ccd322d5 100644
--- a/include/libc/libc_stat.h
+++ b/include/libc/libc_stat.h
@@ -1,6 +1,12 @@
 #ifndef LIBC_STAT_H__
 #define LIBC_STAT_H__
 
+#include <rtconfig.h>
+
+#ifdef RT_USING_NEWLIB
+/* use header file of newlib */
+#include <sys/stat.h>
+#else
 #define S_IFMT               00170000
 #define S_IFSOCK             0140000
 #define S_IFLNK              0120000
@@ -36,5 +42,19 @@
 #define S_IWOTH              00002
 #define S_IXOTH              00001
 
+/* stat structure */
+#include <stdint.h>
+#include <time.h>
+
+struct stat
+{
+    struct rt_device* st_dev;
+    uint16_t st_mode;
+    uint32_t st_size;
+    time_t   st_mtime;
+    uint32_t st_blksize;
+};
+
 #endif
 
+#endif