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authorRodney W. Grimes <rgrimes@FreeBSD.org>1994-05-26 06:35:07 +0000
committerRodney W. Grimes <rgrimes@FreeBSD.org>1994-05-26 06:35:07 +0000
commit8fae3551ec46402adf7ab034cf9e02bcbc7ca8ee (patch)
treeb01471c3d6b141c37639a14b7a25f0433d926a99 /sbin/nfsiod/nfsiod.c
parent4b88c807ea9c629dc5691abc7e3cac9ea0d776dd (diff)
downloadsrc-8fae3551ec46402adf7ab034cf9e02bcbc7ca8ee.tar.gz
src-8fae3551ec46402adf7ab034cf9e02bcbc7ca8ee.zip
BSD 4.4 Lite sbin Sources
Note: XNSrouted and routed NOT imported here, they shall be imported with usr.sbin.
Notes
Notes: svn path=/head/; revision=1558
Diffstat (limited to 'sbin/nfsiod/nfsiod.c')
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1 files changed, 167 insertions, 0 deletions
diff --git a/sbin/nfsiod/nfsiod.c b/sbin/nfsiod/nfsiod.c
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+++ b/sbin/nfsiod/nfsiod.c
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+/*
+ * 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
+static char sccsid[] = "@(#)nfsiod.c 8.3 (Berkeley) 2/22/94";
+#endif not lint
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/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));
+}
+
+void
+usage()
+{
+ (void)fprintf(stderr, "usage: nfsiod [-n num_servers]\n");
+ exit(1);
+}