Libc-320.tar.gz

[apple/libc.git] / stdio / FreeBSD / funopen.c

diff --git a/stdio/FreeBSD/funopen.c b/stdio/FreeBSD/funopen.c
new file mode 100644 (file)
index 0000000..040c806
--- /dev/null
+++ b/stdio/FreeBSD/funopen.c
@@ -0,0 +1,80 @@
+/*-
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)funopen.c  8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/stdio/funopen.c,v 1.5 2002/05/28 16:59:39 alfred Exp $");
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "local.h"
+
+FILE *
+funopen(cookie, readfn, writefn, seekfn, closefn)
+       const void *cookie;
+       int (*readfn)(), (*writefn)();
+       fpos_t (*seekfn)(void *cookie, fpos_t off, int whence);
+       int (*closefn)();
+{
+       FILE *fp;
+       int flags;
+
+       if (readfn == NULL) {
+               if (writefn == NULL) {          /* illegal */
+                       errno = EINVAL;
+                       return (NULL);
+               } else
+                       flags = __SWR;          /* write only */
+       } else {
+               if (writefn == NULL)
+                       flags = __SRD;          /* read only */
+               else
+                       flags = __SRW;          /* read-write */
+       }
+       if ((fp = __sfp()) == NULL)
+               return (NULL);
+       fp->_flags = flags;
+       fp->_file = -1;
+       fp->_cookie = (void *)cookie;
+       fp->_read = readfn;
+       fp->_write = writefn;
+       fp->_seek = seekfn;
+       fp->_close = closefn;
+       return (fp);
+}