BSD 4.4 Lite sbin Sources

Note:  XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.

1 files changed, 204 insertions, 0 deletions

diff --git a/sbin/reboot/reboot.c b/sbin/reboot/reboot.c
new file mode 100644
index 0000000..df5515a
--- /dev/null
+++ b/sbin/reboot/reboot.c
@@ -0,0 +1,204 @@
+/*
+ * Copyright (c) 1980, 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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) 1980, 1986, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)reboot.c	8.1 (Berkeley) 6/5/93";
+#endif /* not lint */
+
+#include <sys/reboot.h>
+#include <signal.h>
+#include <pwd.h>
+#include <errno.h>
+#include <syslog.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void err __P((const char *fmt, ...));
+void usage __P((void));
+
+int dohalt;
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	register int i;
+	struct passwd *pw;
+	int ch, howto, lflag, nflag, qflag, sverrno;
+	char *p, *user;
+
+	if (!strcmp((p = rindex(*argv, '/')) ? p + 1 : *argv, "halt")) {
+		dohalt = 1;
+		howto = RB_HALT;
+	} else
+		howto = 0;
+	lflag = nflag = qflag = 0;
+	while ((ch = getopt(argc, argv, "lnq")) != EOF)
+		switch(ch) {
+		case 'l':		/* Undocumented; used by shutdown. */
+			lflag = 1;
+			break;
+		case 'n':
+			nflag = 1;
+			howto |= RB_NOSYNC;
+			break;
+		case 'q':
+			qflag = 1;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (geteuid())
+		err("%s", strerror(EPERM));
+
+	if (qflag) {
+		reboot(howto);
+		err("%s", strerror(errno));
+	}
+
+	/* Log the reboot. */
+	if (!lflag)  {
+		if ((user = getlogin()) == NULL)
+			user = (pw = getpwuid(getuid())) ?
+			    pw->pw_name : "???";
+		if (dohalt) {
+			openlog("halt", 0, LOG_AUTH | LOG_CONS);
+			syslog(LOG_CRIT, "halted by %s", user);
+		} else {
+			openlog("reboot", 0, LOG_AUTH | LOG_CONS);
+			syslog(LOG_CRIT, "rebooted by %s", user);
+		}
+	}
+	logwtmp("~", "shutdown", "");
+
+	/*
+	 * Do a sync early on, so disks start transfers while we're off
+	 * killing processes.  Don't worry about writes done before the
+	 * processes die, the reboot system call syncs the disks.
+	 */
+	if (!nflag)
+		sync();
+
+	/* Just stop init -- if we fail, we'll restart it. */
+	if (kill(1, SIGTSTP) == -1)
+		err("SIGTSTP init: %s", strerror(errno));
+
+	/* Ignore the SIGHUP we get when our parent shell dies. */
+	(void)signal(SIGHUP, SIG_IGN);
+
+	/* Send a SIGTERM first, a chance to save the buffers. */
+	if (kill(-1, SIGTERM) == -1)
+		err("SIGTERM processes: %s", strerror(errno));
+
+	/*
+	 * After the processes receive the signal, start the rest of the
+	 * buffers on their way.  Wait 5 seconds between the SIGTERM and
+	 * the SIGKILL to give everybody a chance.
+	 */
+	sleep(2);
+	if (!nflag)
+		sync();
+	sleep(3);
+
+	for (i = 1;; ++i) {
+		if (kill(-1, SIGKILL) == -1) {
+			if (errno == ESRCH)
+				break;
+			goto restart;
+		}
+		if (i > 5) {
+			(void)fprintf(stderr,
+			    "WARNING: some process(es) wouldn't die\n");
+			break;
+		}
+		(void)sleep(2 * i);
+	}
+
+	reboot(howto);
+	/* FALLTHROUGH */
+
+restart:
+	sverrno = errno;
+	err("%s%s", kill(1, SIGHUP) == -1 ? "(can't restart init): " : "",
+	    strerror(sverrno));
+	/* NOTREACHED */
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "usage: %s [-nq]\n", dohalt ? "halt" : "reboot");
+	exit(1);
+}
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+void
+#if __STDC__
+err(const char *fmt, ...)
+#else
+err(fmt, va_alist)
+	char *fmt;
+        va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void)fprintf(stderr, "%s: ", dohalt ? "halt" : "reboot");
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	(void)fprintf(stderr, "\n");
+	exit(1);
+	/* NOTREACHED */
+}