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freebsd/sbin/dump/optr.c
Warner Losh fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00

430 lines
10 KiB
C

/*-
* 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. 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";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/wait.h>
#include <ufs/ufs/dinode.h>
#include <errno.h>
#include <fstab.h>
#include <grp.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <signal.h>
#include <time.h>
#include <unistd.h>
#include "dump.h"
#include "pathnames.h"
void alarmcatch(int);
int datesort(const void *, const void *);
/*
* 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 const char *attnmessage; /* attention message */
int
query(const 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(0);
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[BUFSIZ];
/*
* Alert the console operator, and enable the alarm clock to
* sleep for 2 minutes in case nobody comes to satisfy dump
*/
void
alarmcatch(int sig __unused)
{
if (notify == 0) {
if (timeout == 0)
(void) fprintf(stderr,
" DUMP: %s: (\"yes\" or \"no\") ",
attnmessage);
else
msgtail("\a\a");
} 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(int signo __unused)
{
msg("Interrupt received.\n");
if (query("Do you want to abort dump?"))
dumpabort(0);
}
/*
* We now use wall(1) to do the actual broadcasting.
*/
void
broadcast(const char *message)
{
FILE *fp;
char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3];
if (!notify)
return;
snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT);
if ((fp = popen(buf, "w")) == NULL)
return;
(void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp);
if (lastmsg[0])
(void) fputs(lastmsg, fp);
if (message[0])
(void) fputs(message, fp);
(void) pclose(fp);
}
/*
* Print out an estimate of the amount of time left to do the dump
*/
time_t tschedule = 0;
void
timeest(void)
{
double percent;
time_t tnow, tdone;
char *tdone_str;
int deltat, hours, mins;
(void)time(&tnow);
if (blockswritten > tapesize) {
setproctitle("%s: 99.99%% done, finished soon", disk);
if (tnow >= tschedule) {
tschedule = tnow + 300;
msg("99.99%% done, finished soon\n");
}
} else {
deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow +
(double)(tnow - tstart_writing) / blockswritten * tapesize;
tdone = tnow + deltat;
percent = (blockswritten * 100.0) / tapesize;
hours = deltat / 3600;
mins = (deltat % 3600) / 60;
tdone_str = ctime(&tdone);
tdone_str[strlen(tdone_str) - 1] = '\0';
setproctitle(
"%s: pass %d: %3.2f%% done, finished in %d:%02d at %s",
disk, passno, percent, hours, mins, tdone_str);
if (tnow >= tschedule) {
tschedule = tnow + 300;
if (blockswritten < 500)
return;
msg("%3.2f%% done, finished in %d:%02d at %s\n", percent,
hours, mins, tdone_str);
}
}
}
/*
* Schedule a printout of the estimate in the next call to timeest().
*/
void
infosch(int signal __unused)
{
tschedule = 0;
}
void
msg(const char *fmt, ...)
{
va_list ap;
(void) fprintf(stderr," DUMP: ");
#ifdef TDEBUG
(void) fprintf(stderr, "pid=%d ", getpid());
#endif
va_start(ap, fmt);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
(void) fflush(stdout);
(void) fflush(stderr);
va_start(ap, fmt);
(void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap);
va_end(ap);
}
void
msgtail(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
}
void
quit(const char *fmt, ...)
{
va_list ap;
(void) fprintf(stderr," DUMP: ");
#ifdef TDEBUG
(void) fprintf(stderr, "pid=%d ", getpid());
#endif
va_start(ap, fmt);
(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(const struct fstab *fs)
{
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 {
SLIST_ENTRY(pfstab) pf_list;
struct fstab *pf_fstab;
};
static SLIST_HEAD(, pfstab) table;
void
dump_getfstab(void)
{
struct fstab *fs;
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)) ||
strcmp(fs->fs_vfstype, "ufs"))
continue;
fs = allocfsent(fs);
if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL)
quit("%s\n", strerror(errno));
pf->pf_fstab = fs;
SLIST_INSERT_HEAD(&table, pf, pf_list);
}
(void) endfsent();
}
/*
* Search in the fstab for a file name.
* This file name can be either the special or the path file name.
*
* The file name can omit the leading '/'.
*/
struct fstab *
fstabsearch(const char *key)
{
struct pfstab *pf;
struct fstab *fs;
char *rn;
SLIST_FOREACH(pf, &table, pf_list) {
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(int arg) /* w ==> just what to do; W ==> most recent dumps */
{
int i;
struct fstab *dt;
struct dumpdates *dtwalk;
char *lastname, *date;
int dumpme;
time_t tnow;
struct tm *tlast;
(void) time(&tnow);
dump_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);
if (dumpme) {
tlast = localtime(&dtwalk->dd_ddate);
dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600)
- (tlast->tm_min * 60) - tlast->tm_sec
+ (dt->fs_freq * 86400));
}
if (arg != 'w' || dumpme)
(void) printf(
"%c %8s\t(%6s) Last dump: Level %d, Date %s\n",
dumpme && (arg != 'w') ? '>' : ' ',
dtwalk->dd_name,
dt ? dt->fs_file : "",
dtwalk->dd_level,
date);
}
}
int
datesort(const void *a1, const void *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);
}