1 /*-
2 * Copyright (c) 1980, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)optr.c 8.2 (Berkeley) 1/6/94
30 * $FreeBSD: src/sbin/dump/optr.c,v 1.9.2.5 2002/02/23 22:32:51 iedowse Exp $
31 */
32
33 #include <sys/param.h>
34 #include <sys/queue.h>
35 #include <sys/wait.h>
36 #include <sys/time.h>
37
38 #include <errno.h>
39 #include <fstab.h>
40 #include <grp.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <stdarg.h>
45 #include <signal.h>
46 #include <unistd.h>
47
48 #include <vfs/ufs/dinode.h>
49
50 #include "dump.h"
51 #include "pathnames.h"
52
53 static void alarmcatch(int);
54 static int datesort(const void *, const void *);
55
56 /*
57 * Query the operator; This previously-fascist piece of code
58 * no longer requires an exact response.
59 * It is intended to protect dump aborting by inquisitive
60 * people banging on the console terminal to see what is
61 * happening which might cause dump to croak, destroying
62 * a large number of hours of work.
63 *
64 * Every 2 minutes we reprint the message, alerting others
65 * that dump needs attention.
66 */
67 static int timeout;
68 static const char *attnmessage; /* attention message */
69
70 int
query(const char * question)71 query(const char *question)
72 {
73 char replybuffer[64];
74 int back, errcount;
75 FILE *mytty;
76
77 if ((mytty = fopen(_PATH_TTY, "r")) == NULL)
78 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno));
79 attnmessage = question;
80 timeout = 0;
81 alarmcatch(0);
82 back = -1;
83 errcount = 0;
84 do {
85 if (fgets(replybuffer, 63, mytty) == NULL) {
86 clearerr(mytty);
87 if (++errcount > 30) /* XXX ugly */
88 quit("excessive operator query failures\n");
89 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') {
90 back = 1;
91 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') {
92 back = 0;
93 } else {
94 fprintf(stderr, " DUMP: \"Yes\" or \"No\"?\n");
95 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ",
96 question);
97 }
98 } while (back < 0);
99
100 /*
101 * Turn off the alarm, and reset the signal to trap out..
102 */
103 alarm(0);
104 if (signal(SIGALRM, sig) == SIG_IGN)
105 signal(SIGALRM, SIG_IGN);
106 fclose(mytty);
107 return(back);
108 }
109
110 char lastmsg[BUFSIZ];
111
112 /*
113 * Alert the console operator, and enable the alarm clock to
114 * sleep for 2 minutes in case nobody comes to satisfy dump
115 */
116 static void
alarmcatch(int signo __unused)117 alarmcatch(int signo __unused)
118 {
119 if (notify == 0) {
120 if (timeout == 0)
121 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ",
122 attnmessage);
123 else
124 msgtail("\a\a");
125 } else {
126 if (timeout) {
127 msgtail("\n");
128 broadcast(""); /* just print last msg */
129 }
130 fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", attnmessage);
131 }
132 signal(SIGALRM, alarmcatch);
133 alarm(120);
134 timeout = 1;
135 }
136
137 /*
138 * Here if an inquisitive operator interrupts the dump program
139 */
140 void
interrupt(int signo __unused)141 interrupt(int signo __unused)
142 {
143 msg("Interrupt received.\n");
144 if (query("Do you want to abort dump?"))
145 dumpabort(0);
146 }
147
148 /*
149 * We now use wall(1) to do the actual broadcasting.
150 */
151 void
broadcast(const char * message)152 broadcast(const char *message)
153 {
154 FILE *fp;
155 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3];
156
157 if (!notify)
158 return;
159
160 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT);
161 if ((fp = popen(buf, "w")) == NULL)
162 return;
163
164 fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp);
165 if (lastmsg[0])
166 fputs(lastmsg, fp);
167 if (message[0])
168 fputs(message, fp);
169
170 pclose(fp);
171 }
172
173 /*
174 * Print out an estimate of the amount of time left to do the dump
175 */
176
177 time_t tschedule = 0;
178
179 void
timeest(void)180 timeest(void)
181 {
182 double percent;
183 time_t tnow;
184 int deltat, hours, mins;
185
186 time(&tnow);
187 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow +
188 (double)(tnow - tstart_writing) / blockswritten * tapesize;
189 percent = (blockswritten * 100.0) / tapesize;
190 hours = deltat / 3600;
191 mins = (deltat % 3600) / 60;
192
193 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d",
194 disk, passno, percent, hours, mins);
195 if (tnow >= tschedule) {
196 tschedule = tnow + 300;
197 if (blockswritten < 500)
198 return;
199 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours,
200 mins);
201 }
202 }
203
204 /*
205 * Schedule a printout of the estimate in the next call to timeest().
206 */
207 void
infosch(int signo __unused)208 infosch(int signo __unused)
209 {
210 tschedule = 0;
211 }
212
213 void
msg(const char * fmt,...)214 msg(const char *fmt, ...)
215 {
216 va_list ap;
217
218 fprintf(stderr," DUMP: ");
219 #ifdef TDEBUG
220 fprintf(stderr, "pid=%d ", getpid());
221 #endif
222 va_start(ap, fmt);
223 vfprintf(stderr, fmt, ap);
224 va_end(ap);
225 fflush(stdout);
226 fflush(stderr);
227 va_start(ap, fmt);
228 vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap);
229 va_end(ap);
230 }
231
232 void
msgtail(const char * fmt,...)233 msgtail(const char *fmt, ...)
234 {
235 va_list ap;
236
237 va_start(ap, fmt);
238 vfprintf(stderr, fmt, ap);
239 va_end(ap);
240 }
241
242 void
quit(const char * fmt,...)243 quit(const char *fmt, ...)
244 {
245 va_list ap;
246
247 fprintf(stderr," DUMP: ");
248 #ifdef TDEBUG
249 fprintf(stderr, "pid=%d ", getpid());
250 #endif
251 va_start(ap, fmt);
252 vfprintf(stderr, fmt, ap);
253 va_end(ap);
254 fflush(stdout);
255 fflush(stderr);
256 dumpabort(0);
257 }
258
259 /*
260 * Tell the operator what has to be done;
261 * we don't actually do it
262 */
263
264 static struct fstab *
allocfsent(struct fstab * fs)265 allocfsent(struct fstab *fs)
266 {
267 struct fstab *new;
268
269 new = (struct fstab *)malloc(sizeof (*fs));
270 if (new == NULL ||
271 (new->fs_file = strdup(fs->fs_file)) == NULL ||
272 (new->fs_type = strdup(fs->fs_type)) == NULL ||
273 (new->fs_spec = strdup(fs->fs_spec)) == NULL)
274 quit("%s\n", strerror(errno));
275 new->fs_passno = fs->fs_passno;
276 new->fs_freq = fs->fs_freq;
277 return (new);
278 }
279
280 struct pfstab {
281 SLIST_ENTRY(pfstab) pf_list;
282 struct fstab *pf_fstab;
283 };
284
285 static SLIST_HEAD(, pfstab) table;
286
287 void
dump_getfstab(void)288 dump_getfstab(void)
289 {
290 struct fstab *fs;
291 struct pfstab *pf;
292
293 if (setfsent() == 0) {
294 msg("Can't open %s for dump table information: %s\n",
295 _PATH_FSTAB, strerror(errno));
296 return;
297 }
298 while ((fs = getfsent()) != NULL) {
299 if (strcmp(fs->fs_type, FSTAB_RW) &&
300 strcmp(fs->fs_type, FSTAB_RO) &&
301 strcmp(fs->fs_type, FSTAB_RQ))
302 continue;
303 fs = allocfsent(fs);
304 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL)
305 quit("%s\n", strerror(errno));
306 pf->pf_fstab = fs;
307 SLIST_INSERT_HEAD(&table, pf, pf_list);
308 }
309 endfsent();
310 }
311
312 /*
313 * Search in the fstab for a file name.
314 * This file name can be either the special or the path file name.
315 *
316 * The file name can omit the leading '/'.
317 */
318 struct fstab *
fstabsearch(const char * key)319 fstabsearch(const char *key)
320 {
321 struct pfstab *pf;
322 struct fstab *fs;
323 char *rn;
324
325 SLIST_FOREACH(pf, &table, pf_list) {
326 fs = pf->pf_fstab;
327 if (strcmp(fs->fs_file, key) == 0 ||
328 strcmp(fs->fs_spec, key) == 0)
329 return (fs);
330 rn = rawname(fs->fs_spec);
331 if (rn != NULL && strcmp(rn, key) == 0)
332 return (fs);
333 if (key[0] != '/') {
334 if (*fs->fs_spec == '/' &&
335 strcmp(fs->fs_spec + 1, key) == 0)
336 return (fs);
337 if (*fs->fs_file == '/' &&
338 strcmp(fs->fs_file + 1, key) == 0)
339 return (fs);
340 }
341 }
342 return (NULL);
343 }
344
345 /*
346 * Tell the operator what to do
347 *
348 * char arg: w ==> just what to do; W ==> most recent dumps
349 */
350 void
lastdump(int arg)351 lastdump(int arg)
352 {
353 int i;
354 struct fstab *dt;
355 struct dumpdates *dtwalk;
356 const char *lastname;
357 char *date;
358 int dumpme;
359 time_t tnow;
360 struct tm *tlast;
361
362 time(&tnow);
363 dump_getfstab(); /* /etc/fstab input */
364 initdumptimes(); /* /etc/dumpdates input */
365 qsort(ddatev, nddates, sizeof(struct dumpdates *), datesort);
366
367 if (arg == 'w')
368 printf("Dump these file systems:\n");
369 else
370 printf("Last dump(s) done (Dump '>' file systems):\n");
371 lastname = "??";
372 ITITERATE(i, dtwalk) {
373 if (strncmp(lastname, dtwalk->dd_name,
374 sizeof(dtwalk->dd_name)) == 0)
375 continue;
376 date = (char *)ctime(&dtwalk->dd_ddate);
377 date[16] = '\0'; /* blast away seconds and year */
378 lastname = dtwalk->dd_name;
379 dt = fstabsearch(dtwalk->dd_name);
380 dumpme = (dt != NULL && dt->fs_freq != 0);
381 if (dumpme) {
382 tlast = localtime(&dtwalk->dd_ddate);
383 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600)
384 - (tlast->tm_min * 60) - tlast->tm_sec
385 + (dt->fs_freq * 86400));
386 }
387 if (arg != 'w' || dumpme)
388 printf(
389 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n",
390 dumpme && (arg != 'w') ? '>' : ' ',
391 dtwalk->dd_name,
392 dt ? dt->fs_file : "",
393 dtwalk->dd_level,
394 date);
395 }
396 }
397
398 static int
datesort(const void * a1,const void * a2)399 datesort(const void *a1, const void *a2)
400 {
401 const struct dumpdates *d1 = *(const struct dumpdates * const *)a1;
402 const struct dumpdates *d2 = *(const struct dumpdates * const *)a2;
403 int diff;
404
405 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name));
406 if (diff == 0)
407 return (d2->dd_ddate - d1->dd_ddate);
408 return (diff);
409 }
410