diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-12-08 07:34:30 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-12-08 07:34:30 +0000 |
| commit | 5d180e2b288ffe23f077218fea535ab782de41e0 (patch) | |
| tree | 5683b66aa1328cb9a2ff629edcaba39dc1a70d0b | |
| parent | 59a5f73ada0cc8169b912fa30066e051176256dd (diff) | |
first cut at performance enhancing heuristic
| -rw-r--r-- | usr.sbin/pwd_mkdb/pwd_mkdb.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/usr.sbin/pwd_mkdb/pwd_mkdb.c b/usr.sbin/pwd_mkdb/pwd_mkdb.c index e315da14a7a..b8982334250 100644 --- a/usr.sbin/pwd_mkdb/pwd_mkdb.c +++ b/usr.sbin/pwd_mkdb/pwd_mkdb.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pwd_mkdb.c,v 1.11 1997/09/15 10:15:27 deraadt Exp $ */ +/* $OpenBSD: pwd_mkdb.c,v 1.12 1997/12/08 07:34:29 deraadt Exp $ */ /*- * Copyright (c) 1991, 1993, 1994 @@ -44,7 +44,7 @@ static char copyright[] = #if 0 static char sccsid[] = "from: @(#)pwd_mkdb.c 8.5 (Berkeley) 4/20/94"; #else -static char *rcsid = "$OpenBSD: pwd_mkdb.c,v 1.11 1997/09/15 10:15:27 deraadt Exp $"; +static char *rcsid = "$OpenBSD: pwd_mkdb.c,v 1.12 1997/12/08 07:34:29 deraadt Exp $"; #endif #endif /* not lint */ @@ -98,6 +98,7 @@ main(argc, argv) DB *dp, *edp; DBT data, key; FILE *fp, *oldfp; + struct stat st; sigset_t set; int ch, cnt, len, makeold, tfd, flags; char *p, *t; @@ -154,10 +155,23 @@ main(argc, argv) /* check only if password database is valid */ if (cflag) { - for (cnt = 1; scan(fp, &pwd, &flags); ++cnt); + for (cnt = 1; scan(fp, &pwd, &flags); ++cnt) + ; exit(0); } + if (fstat(fileno(fp), &st) == -1) + error(pname); + + if (st.st_size > (off_t)100*1024) { + /* + * It is a large file. We are going to crank db's cache size. + */ + openinfo.cachesize = st.st_size * 20; + if (openinfo.cachesize > 12*1024*1024) + openinfo.cachesize = 12*1024*1024; + } + /* Open the temporary insecure password database. */ (void)snprintf(buf, sizeof(buf), "%s.tmp", changedir(_PATH_MP_DB, basedir)); |