1 files changed, 108 insertions, 0 deletions
diff --git a/StdLib/LibC/Stdio/fdopen.c b/StdLib/LibC/Stdio/fdopen.c
new file mode 100644
index 0000000000..3a728951f6
--- /dev/null
+++ b/StdLib/LibC/Stdio/fdopen.c
@@ -0,0 +1,108 @@
+/*  $NetBSD: fdopen.c,v 1.14 2003/08/07 16:43:22 agc 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  <LibConfig.h>
+#include  <sys/EfiCdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)fdopen.c  8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: fdopen.c,v 1.14 2003/08/07 16:43:22 agc Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include  "namespace.h"
+#include  <sys/types.h>
+
+#include  <assert.h>
+#include  <errno.h>
+#include  <fcntl.h>
+#include  <sys/EfiSysCall.h>
+#include  <stdio.h>
+
+#include  "reentrant.h"
+#include  "local.h"
+
+#ifdef __weak_alias
+__weak_alias(fdopen,_fdopen)
+#endif
+
+FILE *
+fdopen(int fd, const char *mode)
+{
+  FILE *fp;
+  int flags, oflags, fdflags, tmp;
+
+  _DIAGASSERT(fd != -1);
+
+  if ((flags = __sflags(mode, &oflags)) == 0)
+    return (NULL);
+
+  /* Make sure the mode the user wants is a subset of the actual mode. */
+  if ((fdflags = fcntl(fd, F_GETFL, 0)) < 0)
+    return (NULL);
+  tmp = fdflags & O_ACCMODE;
+  if (tmp != O_RDWR && (tmp != (oflags & O_ACCMODE))) {
+    errno = EINVAL;
+    return (NULL);
+  }
+
+  if (oflags & O_NONBLOCK) {
+    struct stat st;
+    if (fstat(fd, &st) == -1) {
+      return (NULL);
+    }
+    if (!S_ISREG(st.st_mode)) {
+      errno = EFTYPE;
+      return (NULL);
+    }
+  }
+
+  if ((fp = __sfp()) == NULL)
+    return (NULL);
+  fp->_flags = (unsigned short)flags;
+  /*
+   * If opened for appending, but underlying descriptor does not have
+   * O_APPEND bit set, assert __SAPP so that __swrite() will lseek to
+   * end before each write.
+   */
+  if ((oflags & O_APPEND) && !(fdflags & O_APPEND))
+    fp->_flags |= __SAPP;
+  fp->_file = (short)fd;
+  fp->_cookie = fp;
+  fp->_read = __sread;
+  fp->_write = __swrite;
+  fp->_seek = __sseek;
+  fp->_close = __sclose;
+  return (fp);
+}