Initial Contribution
diff --git a/libc/stdio/fopen.c b/libc/stdio/fopen.c
new file mode 100644
index 0000000..de15dc3
--- /dev/null
+++ b/libc/stdio/fopen.c
@@ -0,0 +1,76 @@
+/* $OpenBSD: fopen.c,v 1.5 2005/08/08 08:05:36 espie Exp $ */
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * 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. Neither the name of the 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 THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <errno.h>
+#include "local.h"
+#include <linux/stat.h>
+
+FILE *
+fopen(const char *file, const char *mode)
+{
+ FILE *fp;
+ int f;
+ int flags, oflags;
+
+ if ((flags = __sflags(mode, &oflags)) == 0)
+ return (NULL);
+ if ((fp = __sfp()) == NULL)
+ return (NULL);
+ if ((f = open(file, oflags, DEFFILEMODE)) < 0) {
+ fp->_flags = 0; /* release */
+ return (NULL);
+ }
+ fp->_file = f;
+ fp->_flags = flags;
+ fp->_cookie = fp;
+ fp->_read = __sread;
+ fp->_write = __swrite;
+ fp->_seek = __sseek;
+ fp->_close = __sclose;
+
+ /*
+ * When opening in append mode, even though we use O_APPEND,
+ * we need to seek to the end so that ftell() gets the right
+ * answer. If the user then alters the seek pointer, or
+ * the file extends, this will fail, but there is not much
+ * we can do about this. (We could set __SAPP and check in
+ * fseek and ftell.)
+ */
+ if (oflags & O_APPEND)
+ (void) __sseek((void *)fp, (fpos_t)0, SEEK_END);
+ return (fp);
+}