initial import of NetBSD tree

1 files changed, 173 insertions, 0 deletions

diff --git a/sbin/nfsiod/nfsiod.c b/sbin/nfsiod/nfsiod.c
new file mode 100644
index 00000000000..0f6414f07c9
--- /dev/null
+++ b/sbin/nfsiod/nfsiod.c
@@ -0,0 +1,173 @@
+/*	$NetBSD: nfsiod.c,v 1.10 1995/09/30 11:39:53 pk Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif not lint
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)nfsiod.c	8.3 (Berkeley) 2/22/94";
+#else
+static char rcsid[] = "$NetBSD: nfsiod.c,v 1.10 1995/09/30 11:39:53 pk Exp $";
+#endif
+#endif not lint
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <syslog.h>
+#include <sys/ucred.h>
+#include <sys/wait.h>
+
+#include <nfs/nfsv2.h>
+#include <nfs/nfs.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/* Global defs */
+#ifdef DEBUG
+int debug = 1;
+#else
+int debug = 0;
+#endif
+
+void nonfs __P((int));
+void reapchild __P((int));
+void usage __P((void));
+
+/*
+ * Nfsiod does asynchronous buffered I/O on behalf of the NFS client.
+ * It does not have to be running for correct operation, but will
+ * improve throughput.
+ */
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	int ch, num_servers;
+
+#define	MAXNFSDCNT      20
+#define	DEFNFSDCNT       1
+	num_servers = DEFNFSDCNT;
+	while ((ch = getopt(argc, argv, "n:")) != EOF)
+		switch (ch) {
+		case 'n':
+			num_servers = atoi(optarg);
+			if (num_servers < 1 || num_servers > MAXNFSDCNT) {
+				warnx("nfsiod count %d; reset to %d",
+				    DEFNFSDCNT);
+				num_servers = DEFNFSDCNT;
+			}
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	/*
+	 * XXX
+	 * Backward compatibility, trailing number is the count of daemons.
+	 */
+	if (argc > 1)
+		usage();
+	if (argc == 1) {
+		num_servers = atoi(argv[0]);
+		if (num_servers < 1 || num_servers > MAXNFSDCNT) {
+			warnx("nfsiod count %d; reset to %d", DEFNFSDCNT);
+			num_servers = DEFNFSDCNT;
+		}
+	}
+
+	if (debug == 0) {
+		daemon(0, 0);
+		(void)signal(SIGHUP, SIG_IGN);
+		(void)signal(SIGINT, SIG_IGN);
+		(void)signal(SIGQUIT, SIG_IGN);
+		(void)signal(SIGSYS, nonfs);
+	}
+	(void)signal(SIGCHLD, reapchild);
+
+	openlog("nfsiod:", LOG_PID, LOG_DAEMON);
+
+	while (num_servers--)
+		switch (fork()) {
+		case -1:
+			syslog(LOG_ERR, "fork: %m");
+			exit(1);
+		case 0:
+			if (nfssvc(NFSSVC_BIOD, NULL) < 0) {
+				syslog(LOG_ERR, "nfssvc: %m");
+				exit(1);
+			}
+			exit(0);
+		}
+	exit(0);
+}
+
+void
+nonfs(signo)
+	int signo;
+{
+	syslog(LOG_ERR, "missing system call: NFS not available.");
+}
+
+void
+reapchild(signo)
+	int signo;
+{
+
+	while (wait3(NULL, WNOHANG, NULL) > 0);
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "usage: nfsiod [-n num_servers]\n");
+	exit(1);
+}