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- /*-
- * Copyright (c) 1980, 1988 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 sccsid[] = "@(#)optr.c 5.14 (Berkeley) 7/16/92";
- #endif /* not lint */
-
- #ifdef sunos
- #include <stdio.h>
- #include <ctype.h>
- #include <sys/param.h>
- #include <sys/wait.h>
- #include <sys/stat.h>
- #include <sys/time.h>
- #else
- #include <sys/param.h>
- #include <sys/wait.h>
- #include <stdio.h>
- #endif
- #include <signal.h>
- #include <time.h>
- #include <fstab.h>
- #include <grp.h>
- #include <utmp.h>
- #include <tzfile.h>
- #include <errno.h>
- #ifdef __STDC__
- #include <unistd.h>
- #include <stdlib.h>
- #include <string.h>
- #include <stdarg.h>
- #else
- #include <varargs.h>
- #endif
- #include "dump.h"
- #include "pathnames.h"
-
- static void alarmcatch();
- static void sendmes();
-
- /*
- * 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.
- */
- int timeout;
- 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
- */
- static 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 *localtime();
- 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()) {
- 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 *rawname();
-
- 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 ||
- strcmp(rawname(fs->fs_spec), 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, datesort();
- 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)
- 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);
- }
-
-