1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #ifndef lint
33 #if 0
34 static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94";
35 #endif
36 static const char rcsid[] =
37 "$FreeBSD$";
38 #endif /* not lint */
39
40 #include <sys/param.h>
41 #include <sys/queue.h>
42 #include <sys/wait.h>
43
44 #include <ufs/ufs/dinode.h>
45
46 #include <errno.h>
47 #include <fstab.h>
48 #include <grp.h>
49 #include <limits.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
53 #include <stdarg.h>
54 #include <signal.h>
55 #include <time.h>
56 #include <unistd.h>
57
58 #include "dump.h"
59 #include "pathnames.h"
60
61 void alarmcatch(int);
62 int datesort(const void *, const void *);
63
64 /*
65 * Query the operator; This previously-fascist piece of code
66 * no longer requires an exact response.
67 * It is intended to protect dump aborting by inquisitive
68 * people banging on the console terminal to see what is
69 * happening which might cause dump to croak, destroying
70 * a large number of hours of work.
71 *
72 * Every 2 minutes we reprint the message, alerting others
73 * that dump needs attention.
74 */
75 static int timeout;
76 static const char *attnmessage; /* attention message */
77
78 int
query(const char * question)79 query(const char *question)
80 {
81 char replybuffer[64];
82 int back, errcount;
83 FILE *mytty;
84
85 if ((mytty = fopen(_PATH_TTY, "r")) == NULL)
86 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno));
87 attnmessage = question;
88 timeout = 0;
89 alarmcatch(0);
90 back = -1;
91 errcount = 0;
92 do {
93 if (fgets(replybuffer, 63, mytty) == NULL) {
94 clearerr(mytty);
95 if (++errcount > 30) /* XXX ugly */
96 quit("excessive operator query failures\n");
97 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') {
98 back = 1;
99 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') {
100 back = 0;
101 } else {
102 (void) fprintf(stderr,
103 " DUMP: \"Yes\" or \"No\"?\n");
104 (void) fprintf(stderr,
105 " DUMP: %s: (\"yes\" or \"no\") ", question);
106 }
107 } while (back < 0);
108
109 /*
110 * Turn off the alarm, and reset the signal to trap out..
111 */
112 (void) alarm(0);
113 if (signal(SIGALRM, sig) == SIG_IGN)
114 signal(SIGALRM, SIG_IGN);
115 (void) fclose(mytty);
116 return(back);
117 }
118
119 char lastmsg[BUFSIZ];
120
121 /*
122 * Alert the console operator, and enable the alarm clock to
123 * sleep for 2 minutes in case nobody comes to satisfy dump
124 */
125 void
alarmcatch(int sig __unused)126 alarmcatch(int sig __unused)
127 {
128 if (notify == 0) {
129 if (timeout == 0)
130 (void) fprintf(stderr,
131 " DUMP: %s: (\"yes\" or \"no\") ",
132 attnmessage);
133 else
134 msgtail("\a\a");
135 } else {
136 if (timeout) {
137 msgtail("\n");
138 broadcast(""); /* just print last msg */
139 }
140 (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ",
141 attnmessage);
142 }
143 signal(SIGALRM, alarmcatch);
144 (void) alarm(120);
145 timeout = 1;
146 }
147
148 /*
149 * Here if an inquisitive operator interrupts the dump program
150 */
151 void
interrupt(int signo __unused)152 interrupt(int signo __unused)
153 {
154 msg("Interrupt received.\n");
155 if (query("Do you want to abort dump?"))
156 dumpabort(0);
157 }
158
159 /*
160 * We now use wall(1) to do the actual broadcasting.
161 */
162 void
broadcast(const char * message)163 broadcast(const char *message)
164 {
165 FILE *fp;
166 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3];
167
168 if (!notify)
169 return;
170
171 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT);
172 if ((fp = popen(buf, "w")) == NULL)
173 return;
174
175 (void) fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp);
176 if (lastmsg[0])
177 (void) fputs(lastmsg, fp);
178 if (message[0])
179 (void) fputs(message, fp);
180
181 (void) pclose(fp);
182 }
183
184 /*
185 * Print out an estimate of the amount of time left to do the dump
186 */
187
188 time_t tschedule = 0;
189
190 void
timeest(void)191 timeest(void)
192 {
193 double percent;
194 time_t tnow, tdone;
195 char *tdone_str;
196 int deltat, hours, mins;
197
198 (void)time(&tnow);
199 if (blockswritten > tapesize) {
200 setproctitle("%s: 99.99%% done, finished soon", disk);
201 if (tnow >= tschedule) {
202 tschedule = tnow + 300;
203 msg("99.99%% done, finished soon\n");
204 }
205 } else {
206 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow +
207 (double)(tnow - tstart_writing) / blockswritten * tapesize;
208 tdone = tnow + deltat;
209 percent = (blockswritten * 100.0) / tapesize;
210 hours = deltat / 3600;
211 mins = (deltat % 3600) / 60;
212
213 tdone_str = ctime(&tdone);
214 tdone_str[strlen(tdone_str) - 1] = '\0';
215 setproctitle(
216 "%s: pass %d: %3.2f%% done, finished in %d:%02d at %s",
217 disk, passno, percent, hours, mins, tdone_str);
218 if (tnow >= tschedule) {
219 tschedule = tnow + 300;
220 if (blockswritten < 500)
221 return;
222 msg("%3.2f%% done, finished in %d:%02d at %s\n", percent,
223 hours, mins, tdone_str);
224 }
225 }
226 }
227
228 /*
229 * Schedule a printout of the estimate in the next call to timeest().
230 */
231 void
infosch(int signal __unused)232 infosch(int signal __unused)
233 {
234 tschedule = 0;
235 }
236
237 void
msg(const char * fmt,...)238 msg(const char *fmt, ...)
239 {
240 va_list ap;
241
242 (void) fprintf(stderr," DUMP: ");
243 #ifdef TDEBUG
244 (void) fprintf(stderr, "pid=%d ", getpid());
245 #endif
246 va_start(ap, fmt);
247 (void) vfprintf(stderr, fmt, ap);
248 va_end(ap);
249 (void) fflush(stdout);
250 (void) fflush(stderr);
251 va_start(ap, fmt);
252 (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap);
253 va_end(ap);
254 }
255
256 void
msgtail(const char * fmt,...)257 msgtail(const char *fmt, ...)
258 {
259 va_list ap;
260
261 va_start(ap, fmt);
262 (void) vfprintf(stderr, fmt, ap);
263 va_end(ap);
264 }
265
266 void
quit(const char * fmt,...)267 quit(const char *fmt, ...)
268 {
269 va_list ap;
270
271 (void) fprintf(stderr," DUMP: ");
272 #ifdef TDEBUG
273 (void) fprintf(stderr, "pid=%d ", getpid());
274 #endif
275 va_start(ap, fmt);
276 (void) vfprintf(stderr, fmt, ap);
277 va_end(ap);
278 (void) fflush(stdout);
279 (void) fflush(stderr);
280 dumpabort(0);
281 }
282
283 /*
284 * Tell the operator what has to be done;
285 * we don't actually do it
286 */
287
288 struct fstab *
allocfsent(const struct fstab * fs)289 allocfsent(const struct fstab *fs)
290 {
291 struct fstab *new;
292
293 new = (struct fstab *)malloc(sizeof (*fs));
294 if (new == NULL ||
295 (new->fs_file = strdup(fs->fs_file)) == NULL ||
296 (new->fs_type = strdup(fs->fs_type)) == NULL ||
297 (new->fs_spec = strdup(fs->fs_spec)) == NULL)
298 quit("%s\n", strerror(errno));
299 new->fs_passno = fs->fs_passno;
300 new->fs_freq = fs->fs_freq;
301 return (new);
302 }
303
304 struct pfstab {
305 SLIST_ENTRY(pfstab) pf_list;
306 struct fstab *pf_fstab;
307 };
308
309 static SLIST_HEAD(, pfstab) table;
310
311 void
dump_getfstab(void)312 dump_getfstab(void)
313 {
314 struct fstab *fs;
315 struct pfstab *pf;
316
317 if (setfsent() == 0) {
318 msg("Can't open %s for dump table information: %s\n",
319 _PATH_FSTAB, strerror(errno));
320 return;
321 }
322 while ((fs = getfsent()) != NULL) {
323 if ((strcmp(fs->fs_type, FSTAB_RW) &&
324 strcmp(fs->fs_type, FSTAB_RO) &&
325 strcmp(fs->fs_type, FSTAB_RQ)) ||
326 strcmp(fs->fs_vfstype, "ufs"))
327 continue;
328 fs = allocfsent(fs);
329 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL)
330 quit("%s\n", strerror(errno));
331 pf->pf_fstab = fs;
332 SLIST_INSERT_HEAD(&table, pf, pf_list);
333 }
334 (void) endfsent();
335 }
336
337 /*
338 * Search in the fstab for a file name.
339 * This file name can be either the special or the path file name.
340 *
341 * The file name can omit the leading '/'.
342 */
343 struct fstab *
fstabsearch(const char * key)344 fstabsearch(const char *key)
345 {
346 struct pfstab *pf;
347 struct fstab *fs;
348 char *rn;
349
350 SLIST_FOREACH(pf, &table, pf_list) {
351 fs = pf->pf_fstab;
352 if (strcmp(fs->fs_file, key) == 0 ||
353 strcmp(fs->fs_spec, key) == 0)
354 return (fs);
355 rn = rawname(fs->fs_spec);
356 if (rn != NULL && strcmp(rn, key) == 0)
357 return (fs);
358 if (key[0] != '/') {
359 if (*fs->fs_spec == '/' &&
360 strcmp(fs->fs_spec + 1, key) == 0)
361 return (fs);
362 if (*fs->fs_file == '/' &&
363 strcmp(fs->fs_file + 1, key) == 0)
364 return (fs);
365 }
366 }
367 return (NULL);
368 }
369
370 /*
371 * Tell the operator what to do
372 */
373 void
lastdump(int arg)374 lastdump(int arg) /* w ==> just what to do; W ==> most recent dumps */
375 {
376 int i;
377 struct fstab *dt;
378 struct dumpdates *dtwalk;
379 char *lastname, *date;
380 int dumpme;
381 time_t tnow;
382 struct tm *tlast;
383
384 (void) time(&tnow);
385 dump_getfstab(); /* /etc/fstab input */
386 initdumptimes(); /* /etc/dumpdates input */
387 qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort);
388
389 if (arg == 'w')
390 (void) printf("Dump these file systems:\n");
391 else
392 (void) printf("Last dump(s) done (Dump '>' file systems):\n");
393 lastname = "??";
394 ITITERATE(i, dtwalk) {
395 if (strncmp(lastname, dtwalk->dd_name,
396 sizeof(dtwalk->dd_name)) == 0)
397 continue;
398 date = (char *)ctime(&dtwalk->dd_ddate);
399 date[16] = '\0'; /* blast away seconds and year */
400 lastname = dtwalk->dd_name;
401 dt = fstabsearch(dtwalk->dd_name);
402 dumpme = (dt != NULL && dt->fs_freq != 0);
403 if (dumpme) {
404 tlast = localtime(&dtwalk->dd_ddate);
405 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600)
406 - (tlast->tm_min * 60) - tlast->tm_sec
407 + (dt->fs_freq * 86400));
408 }
409 if (arg != 'w' || dumpme)
410 (void) printf(
411 "%c %8s\t(%6s) Last dump: Level %d, Date %s\n",
412 dumpme && (arg != 'w') ? '>' : ' ',
413 dtwalk->dd_name,
414 dt ? dt->fs_file : "",
415 dtwalk->dd_level,
416 date);
417 }
418 }
419
420 int
datesort(const void * a1,const void * a2)421 datesort(const void *a1, const void *a2)
422 {
423 struct dumpdates *d1 = *(struct dumpdates **)a1;
424 struct dumpdates *d2 = *(struct dumpdates **)a2;
425 int diff;
426
427 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name));
428 if (diff == 0)
429 return (d2->dd_ddate - d1->dd_ddate);
430 return (diff);
431 }
432