add newlib support for readdir

newlib/src/libgloss/metalsvm/Makefile.in

@@ -64,7 +64,7 @@ METALSVM_BSP = libgloss.a
 METALSVM_OBJS = chown.o errno.o fork.o gettod.o kill.o open.o sbrk.o times.o write.o \
            close.o execve.o fstat.o init.o link.o read.o stat.o unlink.o \
            environ.o  _exit.o getpid.o isatty.o lseek.o readlink.o symlink.o wait.o \
-	   dup.o dup2.o closedir.o opendir.o
+	   dup.o dup2.o closedir.o opendir.o readdir.o
 
 
 #### Host specific Makefile fragment comes in here.
@@ -110,6 +110,7 @@ dup.o: $(srcdir)/dup.c
 dup2.o: $(srcdir)/dup2.c
 opendir.o: $(srcdir)/opendir.c
 closedir.o: $(srcdir)/closedir.c
+readdir.o: $(srcdir)/readdir.c
 
 install: $($(CPU)_INSTALL)
 	$(INSTALL_DATA) $(CRT0) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(CRT0)

newlib/src/libgloss/metalsvm/closedir.c

@@ -50,12 +50,12 @@ int
 _DEFUN (closedir, (dirp), 
 	DIR * dirp)
 {
-	int fd;
+	int fildes;
 
-	fd = dirp->dd_fd;
+	fildes = dirp->dd_fd;
 	dirp->dd_fd = -1;
 	dirp->dd_loc = 0;
-	(void)free((void *)dirp->dd_buf);
-	(void)free((void *)dirp);
-	return(close(fd));
+	free((void *)dirp->dd_buf);
+	free((void *)dirp);
+	return(close(fildes));
 }

newlib/src/libgloss/metalsvm/include/sys/dirent.h

@@ -25,12 +25,12 @@ int closedir (DIR *);
 
 #include <sys/types.h>
 
-struct dirent {
+typedef struct dirent {
 	long	d_ino;
 	off_t	d_off;
 	unsigned short	d_reclen;
 	/* we need better syntax for variable-sized arrays */
 	char	d_name[1];
-};
+} dirent_t;
 
 #endif

newlib/src/libgloss/metalsvm/opendir.c

@@ -50,15 +50,15 @@ _DEFUN (opendir, (name),
 	const char *name)
 {
 	DIR *dirp;
-	int fd;
+	int fildes;
 
-	fd = open(name, 0);
+	fildes = open(name, 0);
 
-	if (fd < 0)
+	if (fildes < 0)
 		return NULL;
 	dirp = (DIR *)malloc(sizeof(DIR)); 
 	if (dirp == NULL) {
-		close(fd);
+		close(fildes);
 		return NULL;
 	}
 
@@ -66,12 +66,11 @@ _DEFUN (opendir, (name),
 	dirp->dd_len = 512;
 
 	if (dirp->dd_buf == NULL) {
-		close(fd);
+		close(fildes);
 		return NULL;
 	}
-	dirp->dd_fd = fd;
+	dirp->dd_fd = fildes;
 	dirp->dd_loc = 0;
-	/* Set up seek point for rewinddir. */
 	dirp->dd_seek = 0;
 	
 	return dirp;

newlib/src/libgloss/metalsvm/readdir.c

@@ -0,0 +1,55 @@
+/* 
+ * Copyright (c) 2011, Marian Ohligs, Chair for Operating Systems,
+ *                                    RWTH Aachen University
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    This product includes software developed by the Chair for Operating Systems,
+ *    RWTH Aachen University.
+ * 4. Neither the name of the Chair for Operating Systems, RWTH Aachen University
+ *    nor the names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of MetalSVM. 
+ */
+
+#include "config.h"
+#include <_ansi.h>
+#include <_syslist.h>
+#include <errno.h>
+#include <dirent.h>
+#undef errno
+extern int errno;
+#include "warning.h"
+#include "syscall.h"
+
+dirent_t*
+_DEFUN (readdir, (dirp),
+        DIR  *dirp)
+{
+	dirent_t* dirent;
+
+	read(dirp->dd_fd, dirent, 0);
+
+	return dirent;
+}