diff -r -u ../pwd_mkdb/pwd_mkdb.c ./pwd_mkdb.c
--- ../pwd_mkdb/pwd_mkdb.c	Fri Jul 12 01:16:52 2002
+++ ./pwd_mkdb.c	Sat Apr 19 07:31:52 2003
@@ -66,14 +66,17 @@
 #define	SECURE		2
 #define	PERM_INSECURE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
 #define	PERM_SECURE	(S_IRUSR|S_IWUSR)
+#define	MINCACHE	2
+#define	MAXCACHE	16
+#define	CACHESZ_ENV	"PWDB_CACHE"
 
 HASHINFO openinfo = {
-	4096,		/* bsize */
-	32,		/* ffactor */
-	256,		/* nelem */
-	2048 * 1024,	/* cachesize */
-	NULL,		/* hash() */
-	0		/* lorder */
+	4096,			/* bsize */
+	32,			/* ffactor */
+	256,			/* nelem */
+	MINCACHE * 1024 * 1024,	/* cachesize */
+	NULL,			/* hash() */
+	0			/* lorder */
 };
 
 static enum state { FILE_INSECURE, FILE_SECURE, FILE_ORIG } clean;
@@ -101,6 +104,8 @@
 	int ch, cnt, ypcnt, makeold, tfd, yp_enabled = 0;
 	unsigned int len;
 	int32_t pw_change, pw_expire;
+	int cache;
+	char *penv;
 	const char *t;
 	char *p;
 	char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];
@@ -116,6 +121,17 @@
 	strcpy(prefix, _PATH_PWD);
 	makeold = 0;
 	username = NULL;
+
+	penv = getenv(CACHESZ_ENV);
+	if (penv != NULL) {
+		cache = atoi(penv);
+		if (cache < MINCACHE)
+			cache = MINCACHE;
+		if (cache > MAXCACHE)
+			cache = MAXCACHE;
+		openinfo.cachesize = cache * 1024 * 1024;
+	}
+
 	while ((ch = getopt(argc, argv, "Cd:ps:u:vN")) != -1)
 		switch(ch) {
 		case 'C':                       /* verify only */