]>
git.wh0rd.org - dump.git/blob - dump/optr.c
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 1.22 2001/03/20 09:14:58 stelian Exp $";
48 #include <sys/param.h>
64 #include <linux/ext2_fs.h>
65 #include <ext2fs/ext2fs.h>
66 #include <bsdcompat.h>
72 #include "pathnames.h"
75 static void alarmcatch
__P((int));
76 int datesort
__P((const void *, const void *));
77 static void sendmes
__P((const char *, const char *));
79 /* List of filesystem types that we can dump (same ext2 on-disk format) */
80 static char *fstypes
[] = { "ext2", "ext3", "InterMezzo", NULL
};
83 * Query the operator; This previously-fascist piece of code
84 * no longer requires an exact response.
85 * It is intended to protect dump aborting by inquisitive
86 * people banging on the console terminal to see what is
87 * happening which might cause dump to croak, destroying
88 * a large number of hours of work.
90 * Every 2 minutes we reprint the message, alerting others
91 * that dump needs attention.
94 static const char *attnmessage
; /* attention message */
97 query(const char *question
)
102 time_t firstprompt
, when_answered
;
104 firstprompt
= time(NULL
);
106 if ((mytty
= fopen(_PATH_TTY
, "r")) == NULL
)
107 quit("fopen on %s fails: %s\n", _PATH_TTY
, strerror(errno
));
108 attnmessage
= question
;
114 if (fgets(replybuffer
, 63, mytty
) == NULL
) {
116 if (++errcount
> 30) /* XXX ugly */
117 quit("excessive operator query failures\n");
118 } else if (replybuffer
[0] == 'y' || replybuffer
[0] == 'Y') {
120 } else if (replybuffer
[0] == 'n' || replybuffer
[0] == 'N') {
123 (void) fprintf(stderr
,
124 " DUMP: \"Yes\" or \"No\"?\n");
125 (void) fprintf(stderr
,
126 " DUMP: %s: (\"yes\" or \"no\") ", question
);
131 * Turn off the alarm, and reset the signal to trap out..
134 if (signal(SIGALRM
, sig
) == SIG_IGN
)
135 signal(SIGALRM
, SIG_IGN
);
136 (void) fclose(mytty
);
137 when_answered
= time(NULL
);
139 * Adjust the base for time estimates to ignore time we spent waiting
140 * for operator input.
142 if (tstart_writing
!= 0)
143 tstart_writing
+= (when_answered
- firstprompt
);
147 char lastmsg
[BUFSIZ
];
150 * Alert the console operator, and enable the alarm clock to
151 * sleep for 2 minutes in case nobody comes to satisfy dump
154 alarmcatch(int signo
)
156 int save_errno
= errno
;
159 (void) fprintf(stderr
,
160 " DUMP: %s: (\"yes\" or \"no\") ",
167 broadcast(""); /* just print last msg */
169 (void) fprintf(stderr
," DUMP: %s: (\"yes\" or \"no\") ",
172 signal(SIGALRM
, alarmcatch
);
179 * Here if an inquisitive operator interrupts the dump program
184 msg("Interrupt received.\n");
185 if (query("Do you want to abort dump?"))
190 * The following variables and routines manage alerting
191 * operators to the status of dump.
192 * This works much like wall(1) does.
197 * Get the names from the group entry "operator" to notify.
202 if (!notify
) /*not going to notify*/
204 gp
= getgrnam(OPGRENT
);
207 msg("No group entry for %s.\n", OPGRENT
);
213 struct tm
*localclock
;
216 * We fork a child to do the actual broadcasting, so
217 * that the process control groups are not messed up
220 broadcast(const char *message
)
228 if (!notify
|| gp
== NULL
)
231 switch (pid
= fork()) {
237 while (wait(&s
) != pid
)
243 localclock
= localtime(&clock
);
245 if ((f_utmp
= fopen(_PATH_UTMP
, "r")) == NULL
) {
246 msg("Cannot open %s: %s\n", _PATH_UTMP
, strerror(errno
));
250 while (!feof(f_utmp
)) {
251 if (fread((char *) &utmp
, sizeof (struct utmp
), 1, f_utmp
) != 1)
253 if (utmp
.ut_name
[0] == 0)
255 for (np
= gp
->gr_mem
; *np
; np
++) {
256 if (strncmp(*np
, utmp
.ut_name
, sizeof(utmp
.ut_name
)) != 0)
259 * Do not send messages to operators on dialups
261 if (strncmp(utmp
.ut_line
, DIALUP
, strlen(DIALUP
)) == 0)
264 msg("Message to %s at %s\n", *np
, utmp
.ut_line
);
266 sendmes(utmp
.ut_line
, message
);
269 (void) fclose(f_utmp
);
270 Exit(0); /* the wait in this same routine will catch this */
275 sendmes(const char *tty
, const char *message
)
277 char t
[MAXPATHLEN
], buf
[BUFSIZ
];
278 register const char *cp
;
282 (void) strcpy(t
, _PATH_DEV
);
283 (void) strncat(t
, tty
, sizeof t
- strlen(_PATH_DEV
) - 1);
285 if ((f_tty
= fopen(t
, "w")) != NULL
) {
287 (void) fprintf(f_tty
,
289 \7\7\7Message from the dump program to all operators at %d:%02d ...\r\n\n\
290 DUMP: NEEDS ATTENTION: ",
291 localclock
->tm_hour
, localclock
->tm_min
);
292 for (cp
= lastmsg
; ; cp
++) {
296 if (!(cp
&& *cp
!= '\0'))
303 (void) putc('\r', f_tty
);
304 (void) putc(*cp
, f_tty
);
306 (void) fclose(f_tty
);
311 * print out an estimate of the amount of time left to do the dump
314 time_t tschedule
= 0;
319 time_t tnow
= time(NULL
);
321 if (tnow
>= tschedule
) {
322 char *buf
= mktimeest(tnow
);
323 tschedule
= tnow
+ 300;
325 fprintf(stderr
, " DUMP: ");
326 fwrite(buf
, strlen(buf
), 1, stderr
);
334 msg(const char *fmt
, ...)
343 (void) fprintf(stderr
," DUMP: ");
345 (void) fprintf(stderr
, "pid=%d ", getpid());
352 (void) vfprintf(stderr
, fmt
, ap
);
354 (void) fflush(stdout
);
355 (void) fflush(stderr
);
361 (void) vsnprintf(lastmsg
, sizeof(lastmsg
), fmt
, ap
);
367 msgtail(const char *fmt
, ...)
369 msgtail(fmt
, va_alist
)
380 (void) vfprintf(stderr
, fmt
, ap
);
386 quit(const char *fmt
, ...)
395 (void) fprintf(stderr
," DUMP: ");
397 (void) fprintf(stderr
, "pid=%d ", getpid());
404 (void) vfprintf(stderr
, fmt
, ap
);
406 (void) fflush(stdout
);
407 (void) fflush(stderr
);
412 * Tell the operator what has to be done;
413 * we don't actually do it
416 static struct fstab
*
417 allocfsent(struct fstab
*fs
)
419 register struct fstab
*new;
421 new = (struct fstab
*)malloc(sizeof (*fs
));
423 quit("%s\n", strerror(errno
));
424 if (strlen(fs
->fs_file
) > 1 && fs
->fs_file
[strlen(fs
->fs_file
) - 1] == '/')
425 fs
->fs_file
[strlen(fs
->fs_file
) - 1] = '\0';
426 if ((new->fs_file
= strdup(fs
->fs_file
)) == NULL
||
427 (new->fs_type
= strdup(fs
->fs_type
)) == NULL
||
428 (new->fs_vfstype
= strdup(fs
->fs_vfstype
)) == NULL
||
429 (new->fs_spec
= strdup(fs
->fs_spec
)) == NULL
)
430 quit("%s\n", strerror(errno
));
431 new->fs_passno
= fs
->fs_passno
;
432 new->fs_freq
= fs
->fs_freq
;
437 struct pfstab
*pf_next
;
438 struct dumpdates
*pf_dd
;
439 struct fstab
*pf_fstab
;
442 static struct pfstab
*table
;
449 struct pfstab
*pfold
= NULL
;
451 if (setfsent() == 0) {
452 msg("Can't open %s for dump table information: %s\n",
453 _PATH_FSTAB
, strerror(errno
));
456 while ((fs
= getfsent()) != NULL
) {
457 if (strcmp(fs
->fs_type
, FSTAB_RW
) &&
458 strcmp(fs
->fs_type
, FSTAB_RO
) &&
459 strcmp(fs
->fs_type
, FSTAB_RQ
))
463 if ((pf
= (struct pfstab
*)malloc(sizeof (*pf
))) == NULL
)
464 quit("%s\n", strerror(errno
));
468 /* keep table in /etc/fstab order for use with -w and -W */
480 * Search in the fstab for a file name.
481 * This file name can be either the special or the path file name.
483 * The entries in the fstab are the BLOCK special names, not the
484 * character special names.
485 * The caller of fstabsearch assures that the character device
486 * is dumped (that is much faster)
488 * The file name can omit the leading '/'.
491 fstabsearch(const char *key
)
493 register struct pfstab
*pf
;
494 register struct fstab
*fs
;
497 for (pf
= table
; pf
!= NULL
; pf
= pf
->pf_next
) {
499 if (strcmp(fs
->fs_file
, key
) == 0 ||
500 strcmp(fs
->fs_spec
, key
) == 0)
502 rn
= rawname(fs
->fs_spec
);
503 if (rn
!= NULL
&& strcmp(rn
, key
) == 0)
506 if (*fs
->fs_spec
== '/' &&
507 strcmp(fs
->fs_spec
+ 1, key
) == 0)
509 if (*fs
->fs_file
== '/' &&
510 strcmp(fs
->fs_file
+ 1, key
) == 0)
519 fstabsearchdir(const char *key
, char *directory
)
521 register struct pfstab
*pf
;
522 register struct fstab
*fs
;
523 register struct fstab
*found_fs
= NULL
;
524 unsigned int size
= 0;
527 if (stat(key
, &buf
) == 0 && S_ISBLK(buf
.st_mode
))
530 for (pf
= table
; pf
!= NULL
; pf
= pf
->pf_next
) {
532 if (strlen(fs
->fs_file
) > size
&&
533 strlen(key
) > strlen(fs
->fs_file
) + 1 &&
534 strncmp(fs
->fs_file
, key
, strlen(fs
->fs_file
)) == 0 &&
535 (key
[strlen(fs
->fs_file
)] == '/' ||
536 fs
->fs_file
[strlen(fs
->fs_file
) - 1] == '/')) {
538 size
= strlen(fs
->fs_file
);
541 if (found_fs
!= NULL
) {
543 * Ok, we have found a fstab entry which matches the argument
544 * We have to split the argument name into:
545 * - a device name (from the fstab entry)
546 * - a directory name on this device
548 strcpy(directory
, key
+ size
);
555 print_wmsg(char arg
, int dumpme
, const char *dev
, int level
,
556 const char *mtpt
, time_t ddate
)
562 date
= (char *)ctime(&ddate
);
563 d
= strchr(date
, '\n');
567 if (!dumpme
&& arg
== 'w')
570 (void) printf("%c %8s\t(%6s) Last dump: ",
571 dumpme
&& (arg
!= 'w') ? '>' : ' ',
576 printf("Level %c, Date %s\n",
583 * Tell the operator what to do
586 lastdump(char arg
) /* w ==> just what to do; W ==> most recent dumps */
592 getfstab(); /* /etc/fstab input */
593 initdumptimes(0); /* dumpdates input */
594 if (ddatev
== NULL
&& table
== NULL
) {
595 (void) printf("No %s or %s file found\n",
596 _PATH_FSTAB
, _PATH_DUMPDATES
);
601 (void) printf("Dump these file systems:\n");
603 (void) printf("Last dump(s) done (Dump '>' file systems):\n");
605 if (ddatev
!= NULL
) {
606 struct dumpdates
*dtwalk
= NULL
;
610 qsort((char *) ddatev
, nddates
, sizeof(struct dumpdates
*), datesort
);
613 ITITERATE(i
, dtwalk
) {
615 if (strncmp(lastname
, dtwalk
->dd_name
,
616 sizeof(dtwalk
->dd_name
)) == 0)
618 lastname
= dtwalk
->dd_name
;
619 if ((dt
= dtwalk
->dd_fstab
) != NULL
) {
620 /* Overload fs_freq as dump level and
621 * fs_passno as date, because we can't
622 * change struct fstab format.
623 * A negative fs_freq means this
624 * filesystem needs to be dumped.
626 dt
->fs_passno
= dtwalk
->dd_ddate
;
627 if (dt
->fs_freq
> 0 && (dtwalk
->dd_ddate
<
628 tnow
- (dt
->fs_freq
* 86400)))
629 dt
->fs_freq
= -dtwalk
->dd_level
- 1;
631 dt
->fs_freq
= dtwalk
->dd_level
+ 1;
637 /* print in /etc/fstab order only those filesystem types we can dump */
638 for (pf
= table
; pf
!= NULL
; pf
= pf
->pf_next
) {
639 struct fstab
*dt
= pf
->pf_fstab
;
642 for (type
= fstypes
; *type
!= NULL
; type
++) {
643 if (strncmp(dt
->fs_vfstype
, *type
,
644 sizeof(dt
->fs_vfstype
)) == 0) {
645 const char *disk
= get_device_name(dt
->fs_spec
);
646 print_wmsg(arg
, dt
->fs_freq
< 0,
647 disk
? disk
: dt
->fs_spec
,
648 dt
->fs_freq
< 0 ? -dt
->fs_freq
- 1 : dt
->fs_freq
- 1,
655 /* print in /etc/dumpdates order if not in /etc/fstab */
656 if (ddatev
!= NULL
) {
657 struct dumpdates
*dtwalk
= NULL
;
662 ITITERATE(i
, dtwalk
) {
663 if (strncmp(lastname
, dtwalk
->dd_name
,
664 sizeof(dtwalk
->dd_name
)) == 0 ||
665 dtwalk
->dd_fstab
!= NULL
)
667 lastname
= dtwalk
->dd_name
;
668 print_wmsg(arg
, 0, dtwalk
->dd_name
,
669 dtwalk
->dd_level
, NULL
, dtwalk
->dd_ddate
);
675 datesort(const void *a1
, const void *a2
)
677 struct dumpdates
*d1
= *(struct dumpdates
**)a1
;
678 struct dumpdates
*d2
= *(struct dumpdates
**)a2
;
681 diff
= strncmp(d1
->dd_name
, d2
->dd_name
, sizeof(d1
->dd_name
));
683 return (d2
->dd_ddate
- d1
->dd_ddate
);