Oops: resurrect cached file that wasn't ripe for deletion

diff --git a/bin/pax/cache.h b/bin/pax/cache.h
new file mode 100644 (file)
index 0000000..73b9a7d
--- /dev/null
+++ b/bin/pax/cache.h
@@ -0,0 +1,73 @@
+/*     $OpenBSD: cache.h,v 1.6 2014/07/14 05:59:26 guenther Exp $      */
+/*     $NetBSD: cache.h,v 1.3 1995/03/21 09:07:12 cgd Exp $    */
+
+/*-
+ * Copyright (c) 1992 Keith Muller.
+ * Copyright (c) 1992, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Keith Muller of the University of California, San Diego.
+ *
+ * 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.
+ *
+ *      @(#)cache.h    8.1 (Berkeley) 5/31/93
+ */
+
+/*
+ * Constants and data structures used to implement group and password file
+ * caches. Traditional passwd/group cache routines perform quite poorly with
+ * archives. The chances of hitting a valid lookup with an archive is quite a
+ * bit worse than with files already resident on the file system. These misses
+ * create a MAJOR performance cost. To adress this problem, these routines
+ * cache both hits and misses.
+ *
+ * NOTE:  name lengths must be as large as those stored in ANY PROTOCOL and
+ * as stored in the passwd and group files. CACHE SIZES MUST BE PRIME
+ */
+#define UNMLEN         32      /* >= user name found in any protocol */
+#define GNMLEN         32      /* >= group name found in any protocol */
+#define UID_SZ         317     /* size of user_name/uid cache */
+#define UNM_SZ         317     /* size of user_name/uid cache */
+#define GID_SZ         251     /* size of gid cache */
+#define GNM_SZ         317     /* size of group name cache */
+#define VALID          1       /* entry and name are valid */
+#define INVALID                2       /* entry valid, name NOT valid */
+
+/*
+ * Node structures used in the user, group, uid, and gid caches.
+ */
+
+typedef struct uidc {
+       int valid;              /* is this a valid or a miss entry */
+       char name[UNMLEN];      /* uid name */
+       uid_t uid;              /* cached uid */
+} UIDC;
+
+typedef struct gidc {
+       int valid;              /* is this a valid or a miss entry */
+       char name[GNMLEN];      /* gid name */
+       gid_t gid;              /* cached gid */
+} GIDC;