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430 lines
10 KiB
C
430 lines
10 KiB
C
/*-
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* Copyright (c) 1980, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/wait.h>
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#include <ufs/ufs/dinode.h>
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#include <errno.h>
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#include <fstab.h>
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#include <grp.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <signal.h>
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#include <time.h>
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#include <unistd.h>
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#include "dump.h"
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#include "pathnames.h"
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void alarmcatch(int);
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int datesort(const void *, const void *);
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/*
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* Query the operator; This previously-fascist piece of code
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* no longer requires an exact response.
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* It is intended to protect dump aborting by inquisitive
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* people banging on the console terminal to see what is
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* happening which might cause dump to croak, destroying
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* a large number of hours of work.
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*
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* Every 2 minutes we reprint the message, alerting others
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* that dump needs attention.
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*/
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static int timeout;
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static const char *attnmessage; /* attention message */
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int
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query(const char *question)
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{
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char replybuffer[64];
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int back, errcount;
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FILE *mytty;
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if ((mytty = fopen(_PATH_TTY, "r")) == NULL)
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quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno));
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attnmessage = question;
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timeout = 0;
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alarmcatch(0);
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back = -1;
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errcount = 0;
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do {
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if (fgets(replybuffer, 63, mytty) == NULL) {
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clearerr(mytty);
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if (++errcount > 30) /* XXX ugly */
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quit("excessive operator query failures\n");
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} else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') {
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back = 1;
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} else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') {
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back = 0;
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} else {
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(void) fprintf(stderr,
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" DUMP: \"Yes\" or \"No\"?\n");
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(void) fprintf(stderr,
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" DUMP: %s: (\"yes\" or \"no\") ", question);
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}
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} while (back < 0);
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/*
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* Turn off the alarm, and reset the signal to trap out..
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*/
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(void) alarm(0);
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if (signal(SIGALRM, sig) == SIG_IGN)
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signal(SIGALRM, SIG_IGN);
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(void) fclose(mytty);
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return(back);
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}
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char lastmsg[BUFSIZ];
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/*
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* Alert the console operator, and enable the alarm clock to
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* sleep for 2 minutes in case nobody comes to satisfy dump
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*/
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void
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alarmcatch(int sig __unused)
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{
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if (notify == 0) {
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if (timeout == 0)
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(void) fprintf(stderr,
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" DUMP: %s: (\"yes\" or \"no\") ",
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attnmessage);
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else
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msgtail("\a\a");
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} else {
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if (timeout) {
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msgtail("\n");
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broadcast(""); /* just print last msg */
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}
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(void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ",
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attnmessage);
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}
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signal(SIGALRM, alarmcatch);
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(void) alarm(120);
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timeout = 1;
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}
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/*
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* Here if an inquisitive operator interrupts the dump program
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*/
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void
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interrupt(int signo __unused)
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{
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msg("Interrupt received.\n");
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if (query("Do you want to abort dump?"))
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dumpabort(0);
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}
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/*
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* We now use wall(1) to do the actual broadcasting.
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*/
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void
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broadcast(const char *message)
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{
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FILE *fp;
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char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3];
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if (!notify)
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return;
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snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT);
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if ((fp = popen(buf, "w")) == NULL)
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return;
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(void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp);
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if (lastmsg[0])
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(void) fputs(lastmsg, fp);
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if (message[0])
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(void) fputs(message, fp);
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(void) pclose(fp);
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}
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/*
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* Print out an estimate of the amount of time left to do the dump
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*/
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time_t tschedule = 0;
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void
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timeest(void)
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{
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double percent;
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time_t tnow, tdone;
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char *tdone_str;
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int deltat, hours, mins;
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(void)time(&tnow);
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if (blockswritten > tapesize) {
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setproctitle("%s: 99.99%% done, finished soon", disk);
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if (tnow >= tschedule) {
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tschedule = tnow + 300;
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msg("99.99%% done, finished soon\n");
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}
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} else {
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deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow +
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(double)(tnow - tstart_writing) / blockswritten * tapesize;
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tdone = tnow + deltat;
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percent = (blockswritten * 100.0) / tapesize;
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hours = deltat / 3600;
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mins = (deltat % 3600) / 60;
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tdone_str = ctime(&tdone);
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tdone_str[strlen(tdone_str) - 1] = '\0';
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setproctitle(
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"%s: pass %d: %3.2f%% done, finished in %d:%02d at %s",
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disk, passno, percent, hours, mins, tdone_str);
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if (tnow >= tschedule) {
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tschedule = tnow + 300;
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if (blockswritten < 500)
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return;
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msg("%3.2f%% done, finished in %d:%02d at %s\n", percent,
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hours, mins, tdone_str);
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}
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}
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}
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/*
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* Schedule a printout of the estimate in the next call to timeest().
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*/
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void
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infosch(int signal __unused)
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{
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tschedule = 0;
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}
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void
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msg(const char *fmt, ...)
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{
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va_list ap;
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(void) fprintf(stderr," DUMP: ");
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#ifdef TDEBUG
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(void) fprintf(stderr, "pid=%d ", getpid());
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#endif
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va_start(ap, fmt);
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(void) vfprintf(stderr, fmt, ap);
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va_end(ap);
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(void) fflush(stdout);
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(void) fflush(stderr);
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va_start(ap, fmt);
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(void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap);
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va_end(ap);
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}
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void
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msgtail(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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(void) vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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void
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quit(const char *fmt, ...)
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{
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va_list ap;
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(void) fprintf(stderr," DUMP: ");
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#ifdef TDEBUG
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(void) fprintf(stderr, "pid=%d ", getpid());
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#endif
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va_start(ap, fmt);
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(void) vfprintf(stderr, fmt, ap);
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va_end(ap);
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(void) fflush(stdout);
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(void) fflush(stderr);
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dumpabort(0);
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}
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/*
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* Tell the operator what has to be done;
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* we don't actually do it
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*/
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struct fstab *
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allocfsent(const struct fstab *fs)
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{
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struct fstab *new;
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new = (struct fstab *)malloc(sizeof (*fs));
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if (new == NULL ||
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(new->fs_file = strdup(fs->fs_file)) == NULL ||
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(new->fs_type = strdup(fs->fs_type)) == NULL ||
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(new->fs_spec = strdup(fs->fs_spec)) == NULL)
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quit("%s\n", strerror(errno));
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new->fs_passno = fs->fs_passno;
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new->fs_freq = fs->fs_freq;
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return (new);
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}
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struct pfstab {
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SLIST_ENTRY(pfstab) pf_list;
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struct fstab *pf_fstab;
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};
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static SLIST_HEAD(, pfstab) table;
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void
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dump_getfstab(void)
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{
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struct fstab *fs;
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struct pfstab *pf;
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if (setfsent() == 0) {
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msg("Can't open %s for dump table information: %s\n",
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_PATH_FSTAB, strerror(errno));
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return;
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}
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while ((fs = getfsent()) != NULL) {
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if ((strcmp(fs->fs_type, FSTAB_RW) &&
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strcmp(fs->fs_type, FSTAB_RO) &&
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strcmp(fs->fs_type, FSTAB_RQ)) ||
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strcmp(fs->fs_vfstype, "ufs"))
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continue;
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fs = allocfsent(fs);
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if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL)
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quit("%s\n", strerror(errno));
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pf->pf_fstab = fs;
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SLIST_INSERT_HEAD(&table, pf, pf_list);
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}
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(void) endfsent();
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}
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/*
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* Search in the fstab for a file name.
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* This file name can be either the special or the path file name.
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*
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* The file name can omit the leading '/'.
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*/
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struct fstab *
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fstabsearch(const char *key)
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{
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struct pfstab *pf;
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struct fstab *fs;
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char *rn;
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SLIST_FOREACH(pf, &table, pf_list) {
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fs = pf->pf_fstab;
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if (strcmp(fs->fs_file, key) == 0 ||
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strcmp(fs->fs_spec, key) == 0)
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return (fs);
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rn = rawname(fs->fs_spec);
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if (rn != NULL && strcmp(rn, key) == 0)
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return (fs);
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if (key[0] != '/') {
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if (*fs->fs_spec == '/' &&
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strcmp(fs->fs_spec + 1, key) == 0)
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return (fs);
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if (*fs->fs_file == '/' &&
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strcmp(fs->fs_file + 1, key) == 0)
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return (fs);
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}
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}
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return (NULL);
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}
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/*
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* Tell the operator what to do
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*/
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void
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lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */
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{
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int i;
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struct fstab *dt;
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struct dumpdates *dtwalk;
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char *lastname, *date;
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int dumpme;
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time_t tnow;
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struct tm *tlast;
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(void) time(&tnow);
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dump_getfstab(); /* /etc/fstab input */
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initdumptimes(); /* /etc/dumpdates input */
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qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort);
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if (arg == 'w')
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(void) printf("Dump these file systems:\n");
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else
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(void) printf("Last dump(s) done (Dump '>' file systems):\n");
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lastname = "??";
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ITITERATE(i, dtwalk) {
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if (strncmp(lastname, dtwalk->dd_name,
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sizeof(dtwalk->dd_name)) == 0)
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continue;
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date = (char *)ctime(&dtwalk->dd_ddate);
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date[16] = '\0'; /* blast away seconds and year */
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lastname = dtwalk->dd_name;
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dt = fstabsearch(dtwalk->dd_name);
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dumpme = (dt != NULL && dt->fs_freq != 0);
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if (dumpme) {
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tlast = localtime(&dtwalk->dd_ddate);
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dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600)
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- (tlast->tm_min * 60) - tlast->tm_sec
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+ (dt->fs_freq * 86400));
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}
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if (arg != 'w' || dumpme)
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(void) printf(
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"%c %8s\t(%6s) Last dump: Level %d, Date %s\n",
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dumpme && (arg != 'w') ? '>' : ' ',
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dtwalk->dd_name,
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dt ? dt->fs_file : "",
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dtwalk->dd_level,
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date);
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}
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}
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int
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datesort(const void *a1, const void *a2)
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{
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struct dumpdates *d1 = *(struct dumpdates **)a1;
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struct dumpdates *d2 = *(struct dumpdates **)a2;
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int diff;
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diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name));
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if (diff == 0)
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return (d2->dd_ddate - d1->dd_ddate);
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return (diff);
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}
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