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-rw-r--r--REORG.TODO/misc/ttyslot.c72
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+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. 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.
+ * 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[] = "@(#)ttyslot.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <ttyent.h>
+#include <alloca.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+ttyslot (void)
+{
+ struct ttyent *ttyp;
+ int slot;
+ char *p;
+ int cnt;
+ size_t buflen = __sysconf (_SC_TTY_NAME_MAX) + 1;
+ char *name;
+
+ if (buflen == 0)
+ /* This should be enough if no fixed value is given. */
+ buflen = 32;
+
+ name = __alloca (buflen);
+
+ __setttyent();
+ for (cnt = 0; cnt < 3; ++cnt)
+ if (__ttyname_r (cnt, name, buflen) == 0) {
+ if ((p = strrchr (name, '/')))
+ ++p;
+ else
+ p = name;
+ for (slot = 1; (ttyp = __getttyent()); ++slot)
+ if (!strcmp(ttyp->ty_name, p)) {
+ __endttyent();
+ return(slot);
+ }
+ break;
+ }
+ __endttyent();
+ return(0);
+}