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delete unneeded include of dir.h
[unix-history] / usr / src / sbin / dump / optr.c
/*-
* Copyright (c) 1980, 1988 The Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/
#ifndef lint
static char sccsid[] = "@(#)optr.c 5.10 (Berkeley) %G%";
#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>
#include <sys/dir.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 <varargs.h>
#include <utmp.h>
#include <tzfile.h>
#include <errno.h>
#ifdef __STDC__
#include <unistd.h>
#include <stdlib.h>
#include <string.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..
*/
alarm(0);
if (signal(SIGALRM, sigalrm) == SIG_IGN)
signal(SIGALRM, SIG_IGN);
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);
alarm(120);
timeout = 1;
}
/*
* Here if an inquisitive operator interrupts the dump program
*/
void
interrupt()
{
msg("Interrupt received.\n");
if (query("Do you want to abort dump?"))
dumpabort();
}
/*
* 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);
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;
int nusers;
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(0);
localclock = localtime(&clock);
if ((f_utmp = fopen(_PATH_UTMP, "r")) == NULL) {
msg("Cannot open %s: %s\n", _PATH_UTMP, strerror(errno));
return;
}
nusers = 0;
while (!feof(f_utmp)) {
if (fread(&utmp, sizeof (struct utmp), 1, f_utmp) != 1)
break;
if (utmp.ut_name[0] == 0)
continue;
nusers++;
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;
time (&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);
}
}
/*
* tapesize: total number of blocks estimated over all reels
* blockswritten: blocks actually written, over all reels
* etapes: estimated number of tapes to write
*
* tsize: blocks can write on this reel
* asize: blocks written on this reel
* tapeno: number of tapes written so far
*/
int
blocksontape()
{
if (tapeno == etapes)
return (tapesize - (etapes - 1) * tsize);
return (tsize);
}
#ifdef lint
/* VARARGS1 */
void msg(fmt) char *fmt; { strcpy(lastmsg, fmt); }
/* VARARGS1 */
void msgtail(fmt) char *fmt; { fmt = fmt; }
void quit(fmt) char *fmt; { msg(fmt); dumpabort(); }
#else /* lint */
void
msg(va_alist)
va_dcl
{
va_list ap;
char *fmt;
(void) fprintf(stderr," DUMP: ");
#ifdef TDEBUG
(void) fprintf(stderr, "pid=%d ", getpid());
#endif
va_start(ap);
fmt = va_arg(ap, char *);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
(void) fflush(stdout);
(void) fflush(stderr);
va_start(ap);
fmt = va_arg(ap, char *);
(void) vsprintf(lastmsg, fmt, ap);
va_end(ap);
}
void
msgtail(va_alist)
va_dcl
{
va_list ap;
char *fmt;
va_start(ap);
fmt = va_arg(ap, char *);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
}
void
quit(va_alist)
va_dcl
{
va_list ap;
char *fmt;
(void) fprintf(stderr," DUMP: ");
#ifdef TDEBUG
(void) fprintf(stderr, "pid=%d ", getpid());
#endif
va_start(ap);
fmt = va_arg(ap, char *);
vfprintf(stderr, fmt, ap);
va_end(ap);
(void) fflush(stdout);
(void) fflush(stderr);
dumpabort();
}
#endif /* lint */
/*
* 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;
}
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;
time(&tnow);
getfstab(); /* /etc/fstab input */
initdumptimes(); /* /etc/dumpdates input */
qsort(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);
}
int max(a, b)
int a, b;
{
return (a > b ? a : b);
}
int min(a, b)
int a, b;
{
return (a < b ? a : b);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.