]>
git.wh0rd.org - dump.git/blob - dump/optr.c
b18643702f90af4737f3c45f2b3ba75e2b111ad2
2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1988, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid
[] =
44 "$Id: optr.c,v 1.18 2000/12/21 11:14:54 stelian Exp $";
48 #include <sys/param.h>
64 #include <linux/ext2_fs.h>
65 #include <ext2fs/ext2fs.h>
66 #include <bsdcompat.h>
71 #include "pathnames.h"
74 static void alarmcatch
__P((int));
75 int datesort
__P((const void *, const void *));
76 static void sendmes
__P((const char *, const char *));
78 /* List of filesystem types that we can dump (same ext2 on-disk format) */
79 static char *fstypes
[] = { "ext2", "ext3", "InterMezzo", NULL
};
82 * Query the operator; This previously-fascist piece of code
83 * no longer requires an exact response.
84 * It is intended to protect dump aborting by inquisitive
85 * people banging on the console terminal to see what is
86 * happening which might cause dump to croak, destroying
87 * a large number of hours of work.
89 * Every 2 minutes we reprint the message, alerting others
90 * that dump needs attention.
93 static const char *attnmessage
; /* attention message */
96 query(const char *question
)
101 time_t firstprompt
, when_answered
;
104 (void)time4(&(firstprompt
));
106 (void)time((time_t *)&(firstprompt
));
109 if ((mytty
= fopen(_PATH_TTY
, "r")) == NULL
)
110 quit("fopen on %s fails: %s\n", _PATH_TTY
, strerror(errno
));
111 attnmessage
= question
;
117 if (fgets(replybuffer
, 63, mytty
) == NULL
) {
119 if (++errcount
> 30) /* XXX ugly */
120 quit("excessive operator query failures\n");
121 } else if (replybuffer
[0] == 'y' || replybuffer
[0] == 'Y') {
123 } else if (replybuffer
[0] == 'n' || replybuffer
[0] == 'N') {
126 (void) fprintf(stderr
,
127 " DUMP: \"Yes\" or \"No\"?\n");
128 (void) fprintf(stderr
,
129 " DUMP: %s: (\"yes\" or \"no\") ", question
);
134 * Turn off the alarm, and reset the signal to trap out..
137 if (signal(SIGALRM
, sig
) == SIG_IGN
)
138 signal(SIGALRM
, SIG_IGN
);
139 (void) fclose(mytty
);
141 (void)time4(&(when_answered
));
143 (void)time((time_t *)&(when_answered
));
146 * Adjust the base for time estimates to ignore time we spent waiting
147 * for operator input.
149 if ((tstart_writing
!= 0) && (when_answered
!= (time_t)-1) && (firstprompt
!= (time_t)-1))
150 tstart_writing
+= (when_answered
- firstprompt
);
154 char lastmsg
[BUFSIZ
];
157 * Alert the console operator, and enable the alarm clock to
158 * sleep for 2 minutes in case nobody comes to satisfy dump
161 alarmcatch(int signo
)
163 int save_errno
= errno
;
166 (void) fprintf(stderr
,
167 " DUMP: %s: (\"yes\" or \"no\") ",
174 broadcast(""); /* just print last msg */
176 (void) fprintf(stderr
," DUMP: %s: (\"yes\" or \"no\") ",
179 signal(SIGALRM
, alarmcatch
);
186 * Here if an inquisitive operator interrupts the dump program
191 msg("Interrupt received.\n");
192 if (query("Do you want to abort dump?"))
197 * The following variables and routines manage alerting
198 * operators to the status of dump.
199 * This works much like wall(1) does.
204 * Get the names from the group entry "operator" to notify.
209 if (!notify
) /*not going to notify*/
211 gp
= getgrnam(OPGRENT
);
214 msg("No group entry for %s.\n", OPGRENT
);
220 struct tm
*localclock
;
223 * We fork a child to do the actual broadcasting, so
224 * that the process control groups are not messed up
227 broadcast(const char *message
)
235 if (!notify
|| gp
== NULL
)
238 switch (pid
= fork()) {
244 while (wait(&s
) != pid
)
249 clock
= time((time_t *)0);
250 localclock
= localtime(&clock
);
252 if ((f_utmp
= fopen(_PATH_UTMP
, "r")) == NULL
) {
253 msg("Cannot open %s: %s\n", _PATH_UTMP
, strerror(errno
));
257 while (!feof(f_utmp
)) {
258 if (fread((char *) &utmp
, sizeof (struct utmp
), 1, f_utmp
) != 1)
260 if (utmp
.ut_name
[0] == 0)
262 for (np
= gp
->gr_mem
; *np
; np
++) {
263 if (strncmp(*np
, utmp
.ut_name
, sizeof(utmp
.ut_name
)) != 0)
266 * Do not send messages to operators on dialups
268 if (strncmp(utmp
.ut_line
, DIALUP
, strlen(DIALUP
)) == 0)
271 msg("Message to %s at %s\n", *np
, utmp
.ut_line
);
273 sendmes(utmp
.ut_line
, message
);
276 (void) fclose(f_utmp
);
277 Exit(0); /* the wait in this same routine will catch this */
282 sendmes(const char *tty
, const char *message
)
284 char t
[MAXPATHLEN
], buf
[BUFSIZ
];
285 register const char *cp
;
289 (void) strcpy(t
, _PATH_DEV
);
290 (void) strncat(t
, tty
, sizeof t
- strlen(_PATH_DEV
) - 1);
292 if ((f_tty
= fopen(t
, "w")) != NULL
) {
294 (void) fprintf(f_tty
,
296 \7\7\7Message from the dump program to all operators at %d:%02d ...\r\n\n\
297 DUMP: NEEDS ATTENTION: ",
298 localclock
->tm_hour
, localclock
->tm_min
);
299 for (cp
= lastmsg
; ; cp
++) {
303 if (!(cp
&& *cp
!= '\0'))
310 (void) putc('\r', f_tty
);
311 (void) putc(*cp
, f_tty
);
313 (void) fclose(f_tty
);
318 * print out an estimate of the amount of time left to do the dump
321 time_t tschedule
= 0;
331 (void) time((time_t *) &tnow
);
333 if (tnow
>= tschedule
) {
334 char *buf
= mktimeest(tnow
);
335 tschedule
= tnow
+ 300;
337 fprintf(stderr
, " DUMP: ");
338 fwrite(buf
, strlen(buf
), 1, stderr
);
346 msg(const char *fmt
, ...)
355 (void) fprintf(stderr
," DUMP: ");
357 (void) fprintf(stderr
, "pid=%d ", getpid());
364 (void) vfprintf(stderr
, fmt
, ap
);
366 (void) fflush(stdout
);
367 (void) fflush(stderr
);
373 (void) vsnprintf(lastmsg
, sizeof(lastmsg
), fmt
, ap
);
379 msgtail(const char *fmt
, ...)
381 msgtail(fmt
, va_alist
)
392 (void) vfprintf(stderr
, fmt
, ap
);
398 quit(const char *fmt
, ...)
407 (void) fprintf(stderr
," DUMP: ");
409 (void) fprintf(stderr
, "pid=%d ", getpid());
416 (void) vfprintf(stderr
, fmt
, ap
);
418 (void) fflush(stdout
);
419 (void) fflush(stderr
);
424 * Tell the operator what has to be done;
425 * we don't actually do it
428 static struct fstab
*
429 allocfsent(struct fstab
*fs
)
431 register struct fstab
*new;
433 new = (struct fstab
*)malloc(sizeof (*fs
));
435 quit("%s\n", strerror(errno
));
436 if (strlen(fs
->fs_file
) > 1 && fs
->fs_file
[strlen(fs
->fs_file
) - 1] == '/')
437 fs
->fs_file
[strlen(fs
->fs_file
) - 1] = '\0';
438 if ((new->fs_file
= strdup(fs
->fs_file
)) == NULL
||
439 (new->fs_type
= strdup(fs
->fs_type
)) == NULL
||
440 (new->fs_vfstype
= strdup(fs
->fs_vfstype
)) == NULL
||
441 (new->fs_spec
= strdup(fs
->fs_spec
)) == NULL
)
442 quit("%s\n", strerror(errno
));
443 new->fs_passno
= fs
->fs_passno
;
444 new->fs_freq
= fs
->fs_freq
;
449 struct pfstab
*pf_next
;
450 struct dumpdates
*pf_dd
;
451 struct fstab
*pf_fstab
;
454 static struct pfstab
*table
;
461 struct pfstab
*pfold
= NULL
;
463 if (setfsent() == 0) {
464 msg("Can't open %s for dump table information: %s\n",
465 _PATH_FSTAB
, strerror(errno
));
468 while ((fs
= getfsent()) != NULL
) {
469 if (strcmp(fs
->fs_type
, FSTAB_RW
) &&
470 strcmp(fs
->fs_type
, FSTAB_RO
) &&
471 strcmp(fs
->fs_type
, FSTAB_RQ
))
475 if ((pf
= (struct pfstab
*)malloc(sizeof (*pf
))) == NULL
)
476 quit("%s\n", strerror(errno
));
480 /* keep table in /etc/fstab order for use with -w and -W */
492 * Search in the fstab for a file name.
493 * This file name can be either the special or the path file name.
495 * The entries in the fstab are the BLOCK special names, not the
496 * character special names.
497 * The caller of fstabsearch assures that the character device
498 * is dumped (that is much faster)
500 * The file name can omit the leading '/'.
503 fstabsearch(const char *key
)
505 register struct pfstab
*pf
;
506 register struct fstab
*fs
;
509 for (pf
= table
; pf
!= NULL
; pf
= pf
->pf_next
) {
511 if (strcmp(fs
->fs_file
, key
) == 0 ||
512 strcmp(fs
->fs_spec
, key
) == 0)
514 rn
= rawname(fs
->fs_spec
);
515 if (rn
!= NULL
&& strcmp(rn
, key
) == 0)
518 if (*fs
->fs_spec
== '/' &&
519 strcmp(fs
->fs_spec
+ 1, key
) == 0)
521 if (*fs
->fs_file
== '/' &&
522 strcmp(fs
->fs_file
+ 1, key
) == 0)
531 fstabsearchdir(const char *key
, char *directory
)
533 register struct pfstab
*pf
;
534 register struct fstab
*fs
;
535 register struct fstab
*found_fs
= NULL
;
536 unsigned int size
= 0;
539 if (stat(key
, &buf
) == 0 && S_ISBLK(buf
.st_mode
))
542 for (pf
= table
; pf
!= NULL
; pf
= pf
->pf_next
) {
544 if (strlen(fs
->fs_file
) > size
&&
545 strlen(key
) > strlen(fs
->fs_file
) + 1 &&
546 strncmp(fs
->fs_file
, key
, strlen(fs
->fs_file
)) == 0 &&
547 (key
[strlen(fs
->fs_file
)] == '/' ||
548 fs
->fs_file
[strlen(fs
->fs_file
) - 1] == '/')) {
550 size
= strlen(fs
->fs_file
);
553 if (found_fs
!= NULL
) {
555 * Ok, we have found a fstab entry which matches the argument
556 * We have to split the argument name into:
557 * - a device name (from the fstab entry)
558 * - a directory name on this device
560 strcpy(directory
, key
+ size
);
567 print_wmsg(char arg
, int dumpme
, const char *dev
, int level
,
568 const char *mtpt
, time_t ddate
)
574 date
= (char *)ctime(&ddate
);
575 d
= strchr(date
, '\n');
579 if (!dumpme
&& arg
== 'w')
582 (void) printf("%c %8s\t(%6s) Last dump: ",
583 dumpme
&& (arg
!= 'w') ? '>' : ' ',
588 printf("Level %c, Date %s\n",
595 * Tell the operator what to do
598 lastdump(char arg
) /* w ==> just what to do; W ==> most recent dumps */
604 getfstab(); /* /etc/fstab input */
605 initdumptimes(0); /* dumpdates input */
606 if (ddatev
== NULL
&& table
== NULL
) {
607 (void) printf("No %s or %s file found\n",
608 _PATH_FSTAB
, _PATH_DUMPDATES
);
613 (void) printf("Dump these file systems:\n");
615 (void) printf("Last dump(s) done (Dump '>' file systems):\n");
617 if (ddatev
!= NULL
) {
618 struct dumpdates
*dtwalk
= NULL
;
622 qsort((char *) ddatev
, nddates
, sizeof(struct dumpdates
*), datesort
);
625 ITITERATE(i
, dtwalk
) {
627 if (strncmp(lastname
, dtwalk
->dd_name
,
628 sizeof(dtwalk
->dd_name
)) == 0)
630 lastname
= dtwalk
->dd_name
;
631 if ((dt
= dtwalk
->dd_fstab
) != NULL
) {
632 /* Overload fs_freq as dump level and
633 * fs_passno as date, because we can't
634 * change struct fstab format.
635 * A negative fs_freq means this
636 * filesystem needs to be dumped.
638 dt
->fs_passno
= dtwalk
->dd_ddate
;
639 if (dt
->fs_freq
> 0 && (dtwalk
->dd_ddate
<
640 tnow
- (dt
->fs_freq
* 86400)))
641 dt
->fs_freq
= -dtwalk
->dd_level
- 1;
643 dt
->fs_freq
= dtwalk
->dd_level
+ 1;
649 /* print in /etc/fstab order only those filesystem types we can dump */
650 for (pf
= table
; pf
!= NULL
; pf
= pf
->pf_next
) {
651 struct fstab
*dt
= pf
->pf_fstab
;
654 for (type
= fstypes
; *type
!= NULL
; type
++) {
655 if (strncmp(dt
->fs_vfstype
, *type
,
656 sizeof(dt
->fs_vfstype
)) == 0) {
657 const char *disk
= get_device_name(dt
->fs_spec
);
658 print_wmsg(arg
, dt
->fs_freq
< 0,
659 disk
? disk
: dt
->fs_spec
,
660 dt
->fs_freq
< 0 ? -dt
->fs_freq
- 1 : dt
->fs_freq
- 1,
667 /* print in /etc/dumpdates order if not in /etc/fstab */
668 if (ddatev
!= NULL
) {
669 struct dumpdates
*dtwalk
= NULL
;
674 ITITERATE(i
, dtwalk
) {
675 if (strncmp(lastname
, dtwalk
->dd_name
,
676 sizeof(dtwalk
->dd_name
)) == 0 ||
677 dtwalk
->dd_fstab
!= NULL
)
679 lastname
= dtwalk
->dd_name
;
680 print_wmsg(arg
, 0, dtwalk
->dd_name
,
681 dtwalk
->dd_level
, NULL
, dtwalk
->dd_ddate
);
687 datesort(const void *a1
, const void *a2
)
689 struct dumpdates
*d1
= *(struct dumpdates
**)a1
;
690 struct dumpdates
*d2
= *(struct dumpdates
**)a2
;
693 diff
= strncmp(d1
->dd_name
, d2
->dd_name
, sizeof(d1
->dd_name
));
695 return (d2
->dd_ddate
- d1
->dd_ddate
);