initial import of NetBSD tree

1 files changed, 544 insertions, 0 deletions

diff --git a/sbin/dump/optr.c b/sbin/dump/optr.c
new file mode 100644
index 00000000000..52755a57fef
--- /dev/null
+++ b/sbin/dump/optr.c
@@ -0,0 +1,544 @@
+/*	$NetBSD: optr.c,v 1.3 1995/03/18 14:55:04 cgd Exp $	*/
+
+/*-
+ * Copyright (c) 1980, 1988, 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
+#if 0
+static char sccsid[] = "@(#)optr.c	8.2 (Berkeley) 1/6/94";
+#else
+static char rcsid[] = "$NetBSD: optr.c,v 1.3 1995/03/18 14:55:04 cgd Exp $";
+#endif
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/wait.h>
+#include <sys/time.h>
+
+#include <errno.h>
+#include <fstab.h>
+#include <grp.h>
+#include <signal.h>
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#endif
+#include <tzfile.h>
+#ifdef __STDC__
+#include <unistd.h>
+#endif
+#include <utmp.h>
+#ifndef __STDC__
+#include <varargs.h>
+#endif
+
+#include "dump.h"
+#include "pathnames.h"
+
+void	alarmcatch __P((/* int, int */));
+int	datesort __P((const void *, const void *));
+static	void sendmes __P((char *, char *));
+
+/*
+ *	Query the operator; This previously-fascist piece of code
+ *	no longer requires an exact response.
+ *	It is intended to protect dump aborting by inquisitive
+ *	people banging on the console terminal to see what is
+ *	happening which might cause dump to croak, destroying
+ *	a large number of hours of work.
+ *
+ *	Every 2 minutes we reprint the message, alerting others
+ *	that dump needs attention.
+ */
+static	int timeout;
+static	char *attnmessage;		/* attention message */
+
+int
+query(question)
+	char	*question;
+{
+	char	replybuffer[64];
+	int	back, errcount;
+	FILE	*mytty;
+
+	if ((mytty = fopen(_PATH_TTY, "r")) == NULL)
+		quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno));
+	attnmessage = question;
+	timeout = 0;
+	alarmcatch();
+	back = -1;
+	errcount = 0;
+	do {
+		if (fgets(replybuffer, 63, mytty) == NULL) {
+			clearerr(mytty);
+			if (++errcount > 30)	/* XXX	ugly */
+				quit("excessive operator query failures\n");
+		} else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') {
+			back = 1;
+		} else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') {
+			back = 0;
+		} else {
+			(void) fprintf(stderr,
+			    "  DUMP: \"Yes\" or \"No\"?\n");
+			(void) fprintf(stderr,
+			    "  DUMP: %s: (\"yes\" or \"no\") ", question);
+		}
+	} while (back < 0);
+
+	/*
+	 *	Turn off the alarm, and reset the signal to trap out..
+	 */
+	(void) alarm(0);
+	if (signal(SIGALRM, sig) == SIG_IGN)
+		signal(SIGALRM, SIG_IGN);
+	(void) fclose(mytty);
+	return(back);
+}
+
+char lastmsg[100];
+
+/*
+ *	Alert the console operator, and enable the alarm clock to
+ *	sleep for 2 minutes in case nobody comes to satisfy dump
+ */
+void
+alarmcatch()
+{
+	if (notify == 0) {
+		if (timeout == 0)
+			(void) fprintf(stderr,
+			    "  DUMP: %s: (\"yes\" or \"no\") ",
+			    attnmessage);
+		else
+			msgtail("\7\7");
+	} else {
+		if (timeout) {
+			msgtail("\n");
+			broadcast("");		/* just print last msg */
+		}
+		(void) fprintf(stderr,"  DUMP: %s: (\"yes\" or \"no\") ",
+		    attnmessage);
+	}
+	signal(SIGALRM, alarmcatch);
+	(void) alarm(120);
+	timeout = 1;
+}
+
+/*
+ *	Here if an inquisitive operator interrupts the dump program
+ */
+void
+interrupt(signo)
+	int signo;
+{
+	msg("Interrupt received.\n");
+	if (query("Do you want to abort dump?"))
+		dumpabort(0);
+}
+
+/*
+ *	The following variables and routines manage alerting
+ *	operators to the status of dump.
+ *	This works much like wall(1) does.
+ */
+struct	group *gp;
+
+/*
+ *	Get the names from the group entry "operator" to notify.
+ */	
+void
+set_operators()
+{
+	if (!notify)		/*not going to notify*/
+		return;
+	gp = getgrnam(OPGRENT);
+	(void) endgrent();
+	if (gp == NULL) {
+		msg("No group entry for %s.\n", OPGRENT);
+		notify = 0;
+		return;
+	}
+}
+
+struct tm *localclock;
+
+/*
+ *	We fork a child to do the actual broadcasting, so
+ *	that the process control groups are not messed up
+ */
+void
+broadcast(message)
+	char	*message;
+{
+	time_t		clock;
+	FILE	*f_utmp;
+	struct	utmp	utmp;
+	char	**np;
+	int	pid, s;
+
+	if (!notify || gp == NULL)
+		return;
+
+	switch (pid = fork()) {
+	case -1:
+		return;
+	case 0:
+		break;
+	default:
+		while (wait(&s) != pid)
+			continue;
+		return;
+	}
+
+	clock = time((time_t *)0);
+	localclock = localtime(&clock);
+
+	if ((f_utmp = fopen(_PATH_UTMP, "r")) == NULL) {
+		msg("Cannot open %s: %s\n", _PATH_UTMP, strerror(errno));
+		return;
+	}
+
+	while (!feof(f_utmp)) {
+		if (fread((char *) &utmp, sizeof (struct utmp), 1, f_utmp) != 1)
+			break;
+		if (utmp.ut_name[0] == 0)
+			continue;
+		for (np = gp->gr_mem; *np; np++) {
+			if (strncmp(*np, utmp.ut_name, sizeof(utmp.ut_name)) != 0)
+				continue;
+			/*
+			 *	Do not send messages to operators on dialups
+			 */
+			if (strncmp(utmp.ut_line, DIALUP, strlen(DIALUP)) == 0)
+				continue;
+#ifdef DEBUG
+			msg("Message to %s at %s\n", *np, utmp.ut_line);
+#endif
+			sendmes(utmp.ut_line, message);
+		}
+	}
+	(void) fclose(f_utmp);
+	Exit(0);	/* the wait in this same routine will catch this */
+	/* NOTREACHED */
+}
+
+static void
+sendmes(tty, message)
+	char *tty, *message;
+{
+	char t[50], buf[BUFSIZ];
+	register char *cp;
+	int lmsg = 1;
+	FILE *f_tty;
+
+	(void) strcpy(t, _PATH_DEV);
+	(void) strcat(t, tty);
+
+	if ((f_tty = fopen(t, "w")) != NULL) {
+		setbuf(f_tty, buf);
+		(void) fprintf(f_tty,
+		    "\n\
+\7\7\7Message from the dump program to all operators at %d:%02d ...\r\n\n\
+DUMP: NEEDS ATTENTION: ",
+		    localclock->tm_hour, localclock->tm_min);
+		for (cp = lastmsg; ; cp++) {
+			if (*cp == '\0') {
+				if (lmsg) {
+					cp = message;
+					if (*cp == '\0')
+						break;
+					lmsg = 0;
+				} else
+					break;
+			}
+			if (*cp == '\n')
+				(void) putc('\r', f_tty);
+			(void) putc(*cp, f_tty);
+		}
+		(void) fclose(f_tty);
+	}
+}
+
+/*
+ *	print out an estimate of the amount of time left to do the dump
+ */
+
+time_t	tschedule = 0;
+
+void
+timeest()
+{
+	time_t	tnow, deltat;
+
+	(void) time((time_t *) &tnow);
+	if (tnow >= tschedule) {
+		tschedule = tnow + 300;
+		if (blockswritten < 500)
+			return;	
+		deltat = tstart_writing - tnow +
+			(1.0 * (tnow - tstart_writing))
+			/ blockswritten * tapesize;
+		msg("%3.2f%% done, finished in %d:%02d\n",
+			(blockswritten * 100.0) / tapesize,
+			deltat / 3600, (deltat % 3600) / 60);
+	}
+}
+
+void
+#if __STDC__
+msg(const char *fmt, ...)
+#else
+msg(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+
+	(void) fprintf(stderr,"  DUMP: ");
+#ifdef TDEBUG
+	(void) fprintf(stderr, "pid=%d ", getpid());
+#endif
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void) vfprintf(stderr, fmt, ap);
+	(void) fflush(stdout);
+	(void) fflush(stderr);
+	(void) vsprintf(lastmsg, fmt, ap);
+	va_end(ap);
+}
+
+void
+#if __STDC__
+msgtail(const char *fmt, ...)
+#else
+msgtail(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void) vfprintf(stderr, fmt, ap);
+	va_end(ap);
+}
+
+void
+#if __STDC__
+quit(const char *fmt, ...)
+#else
+quit(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+
+	(void) fprintf(stderr,"  DUMP: ");
+#ifdef TDEBUG
+	(void) fprintf(stderr, "pid=%d ", getpid());
+#endif
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void) vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	(void) fflush(stdout);
+	(void) fflush(stderr);
+	dumpabort(0);
+}
+
+/*
+ *	Tell the operator what has to be done;
+ *	we don't actually do it
+ */
+
+struct fstab *
+allocfsent(fs)
+	register struct fstab *fs;
+{
+	register struct fstab *new;
+
+	new = (struct fstab *)malloc(sizeof (*fs));
+	if (new == NULL ||
+	    (new->fs_file = strdup(fs->fs_file)) == NULL ||
+	    (new->fs_type = strdup(fs->fs_type)) == NULL ||
+	    (new->fs_spec = strdup(fs->fs_spec)) == NULL)
+		quit("%s\n", strerror(errno));
+	new->fs_passno = fs->fs_passno;
+	new->fs_freq = fs->fs_freq;
+	return (new);
+}
+
+struct	pfstab {
+	struct	pfstab *pf_next;
+	struct	fstab *pf_fstab;
+};
+
+static	struct pfstab *table;
+
+void
+getfstab()
+{
+	register struct fstab *fs;
+	register struct pfstab *pf;
+
+	if (setfsent() == 0) {
+		msg("Can't open %s for dump table information: %s\n",
+		    _PATH_FSTAB, strerror(errno));
+		return;
+	}
+	while ((fs = getfsent()) != NULL) {
+		if (strcmp(fs->fs_type, FSTAB_RW) &&
+		    strcmp(fs->fs_type, FSTAB_RO) &&
+		    strcmp(fs->fs_type, FSTAB_RQ))
+			continue;
+		fs = allocfsent(fs);
+		if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL)
+			quit("%s\n", strerror(errno));
+		pf->pf_fstab = fs;
+		pf->pf_next = table;
+		table = pf;
+	}
+	(void) endfsent();
+}
+
+/*
+ * Search in the fstab for a file name.
+ * This file name can be either the special or the path file name.
+ *
+ * The entries in the fstab are the BLOCK special names, not the
+ * character special names.
+ * The caller of fstabsearch assures that the character device
+ * is dumped (that is much faster)
+ *
+ * The file name can omit the leading '/'.
+ */
+struct fstab *
+fstabsearch(key)
+	char *key;
+{
+	register struct pfstab *pf;
+	register struct fstab *fs;
+	char *rn;
+
+	for (pf = table; pf != NULL; pf = pf->pf_next) {
+		fs = pf->pf_fstab;
+		if (strcmp(fs->fs_file, key) == 0 ||
+		    strcmp(fs->fs_spec, key) == 0)
+			return (fs);
+		rn = rawname(fs->fs_spec);
+		if (rn != NULL && strcmp(rn, key) == 0)
+			return (fs);
+		if (key[0] != '/') {
+			if (*fs->fs_spec == '/' &&
+			    strcmp(fs->fs_spec + 1, key) == 0)
+				return (fs);
+			if (*fs->fs_file == '/' &&
+			    strcmp(fs->fs_file + 1, key) == 0)
+				return (fs);
+		}
+	}
+	return (NULL);
+}
+
+/*
+ *	Tell the operator what to do
+ */
+void
+lastdump(arg)
+	char	arg;	/* w ==> just what to do; W ==> most recent dumps */
+{
+	register int i;
+	register struct fstab *dt;
+	register struct dumpdates *dtwalk;
+	char *lastname, *date;
+	int dumpme;
+	time_t tnow;
+
+	(void) time(&tnow);
+	getfstab();		/* /etc/fstab input */
+	initdumptimes();	/* /etc/dumpdates input */
+	qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort);
+
+	if (arg == 'w')
+		(void) printf("Dump these file systems:\n");
+	else
+		(void) printf("Last dump(s) done (Dump '>' file systems):\n");
+	lastname = "??";
+	ITITERATE(i, dtwalk) {
+		if (strncmp(lastname, dtwalk->dd_name,
+		    sizeof(dtwalk->dd_name)) == 0)
+			continue;
+		date = (char *)ctime(&dtwalk->dd_ddate);
+		date[16] = '\0';	/* blast away seconds and year */
+		lastname = dtwalk->dd_name;
+		dt = fstabsearch(dtwalk->dd_name);
+		dumpme = (dt != NULL &&
+		    dt->fs_freq != 0 &&
+		    dtwalk->dd_ddate < tnow - (dt->fs_freq * SECSPERDAY));
+		if (arg != 'w' || dumpme)
+			(void) printf(
+			    "%c %8s\t(%6s) Last dump: Level %c, Date %s\n",
+			    dumpme && (arg != 'w') ? '>' : ' ',
+			    dtwalk->dd_name,
+			    dt ? dt->fs_file : "",
+			    dtwalk->dd_level,
+			    date);
+	}
+}
+
+int
+datesort(a1, a2)
+	const void *a1, *a2;
+{
+	struct dumpdates *d1 = *(struct dumpdates **)a1;
+	struct dumpdates *d2 = *(struct dumpdates **)a2;
+	int diff;
+
+	diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name));
+	if (diff == 0)
+		return (d2->dd_ddate - d1->dd_ddate);
+	return (diff);
+}