dma: perform MX lookups
[dragonfly.git] / sbin / dump / optr.c
blobcc4cb27638533bc26fa49c6fdb78f2c2f3899277
1 /*-
2 * Copyright (c) 1980, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
33 * @(#)optr.c 8.2 (Berkeley) 1/6/94
34 * $FreeBSD: src/sbin/dump/optr.c,v 1.9.2.5 2002/02/23 22:32:51 iedowse Exp $
35 * $DragonFly: src/sbin/dump/optr.c,v 1.10 2005/08/28 04:35:12 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/queue.h>
40 #include <sys/wait.h>
41 #include <sys/time.h>
43 #include <errno.h>
44 #include <fstab.h>
45 #include <grp.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <stdarg.h>
50 #include <signal.h>
51 #include <unistd.h>
52 #include <utmp.h>
54 #include <vfs/ufs/dinode.h>
56 #include "dump.h"
57 #include "pathnames.h"
59 static void alarmcatch(int);
60 static int datesort(const void *, const void *);
63 * Query the operator; This previously-fascist piece of code
64 * no longer requires an exact response.
65 * It is intended to protect dump aborting by inquisitive
66 * people banging on the console terminal to see what is
67 * happening which might cause dump to croak, destroying
68 * a large number of hours of work.
70 * Every 2 minutes we reprint the message, alerting others
71 * that dump needs attention.
73 static int timeout;
74 static const char *attnmessage; /* attention message */
76 int
77 query(const char *question)
79 char replybuffer[64];
80 int back, errcount;
81 FILE *mytty;
83 if ((mytty = fopen(_PATH_TTY, "r")) == NULL)
84 quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno));
85 attnmessage = question;
86 timeout = 0;
87 alarmcatch(0);
88 back = -1;
89 errcount = 0;
90 do {
91 if (fgets(replybuffer, 63, mytty) == NULL) {
92 clearerr(mytty);
93 if (++errcount > 30) /* XXX ugly */
94 quit("excessive operator query failures\n");
95 } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') {
96 back = 1;
97 } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') {
98 back = 0;
99 } else {
100 fprintf(stderr, " DUMP: \"Yes\" or \"No\"?\n");
101 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ",
102 question);
104 } while (back < 0);
107 * Turn off the alarm, and reset the signal to trap out..
109 alarm(0);
110 if (signal(SIGALRM, sig) == SIG_IGN)
111 signal(SIGALRM, SIG_IGN);
112 fclose(mytty);
113 return(back);
116 char lastmsg[BUFSIZ];
119 * Alert the console operator, and enable the alarm clock to
120 * sleep for 2 minutes in case nobody comes to satisfy dump
122 static void
123 alarmcatch(int signo __unused)
125 if (notify == 0) {
126 if (timeout == 0)
127 fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ",
128 attnmessage);
129 else
130 msgtail("\a\a");
131 } else {
132 if (timeout) {
133 msgtail("\n");
134 broadcast(""); /* just print last msg */
136 fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", attnmessage);
138 signal(SIGALRM, alarmcatch);
139 alarm(120);
140 timeout = 1;
144 * Here if an inquisitive operator interrupts the dump program
146 void
147 interrupt(int signo __unused)
149 msg("Interrupt received.\n");
150 if (query("Do you want to abort dump?"))
151 dumpabort(0);
155 * We now use wall(1) to do the actual broadcasting.
157 void
158 broadcast(const char *message)
160 FILE *fp;
161 char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3];
163 if (!notify)
164 return;
166 snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT);
167 if ((fp = popen(buf, "w")) == NULL)
168 return;
170 fputs("\a\a\aMessage from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp);
171 if (lastmsg[0])
172 fputs(lastmsg, fp);
173 if (message[0])
174 fputs(message, fp);
176 pclose(fp);
180 * Print out an estimate of the amount of time left to do the dump
183 time_t tschedule = 0;
185 void
186 timeest(void)
188 double percent;
189 time_t tnow;
190 int deltat, hours, mins;
192 time(&tnow);
193 deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow +
194 (double)(tnow - tstart_writing) / blockswritten * tapesize;
195 percent = (blockswritten * 100.0) / tapesize;
196 hours = deltat / 3600;
197 mins = (deltat % 3600) / 60;
199 setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d",
200 disk, passno, percent, hours, mins);
201 if (tnow >= tschedule) {
202 tschedule = tnow + 300;
203 if (blockswritten < 500)
204 return;
205 msg("%3.2f%% done, finished in %d:%02d\n", percent, hours,
206 mins);
211 * Schedule a printout of the estimate in the next call to timeest().
213 void
214 infosch(int signo __unused)
216 tschedule = 0;
219 void
220 msg(const char *fmt, ...)
222 va_list ap;
224 fprintf(stderr," DUMP: ");
225 #ifdef TDEBUG
226 fprintf(stderr, "pid=%d ", getpid());
227 #endif
228 va_start(ap, fmt);
229 vfprintf(stderr, fmt, ap);
230 va_end(ap);
231 fflush(stdout);
232 fflush(stderr);
233 va_start(ap, fmt);
234 vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap);
235 va_end(ap);
238 void
239 msgtail(const char *fmt, ...)
241 va_list ap;
243 va_start(ap, fmt);
244 vfprintf(stderr, fmt, ap);
245 va_end(ap);
248 void
249 quit(const char *fmt, ...)
251 va_list ap;
253 fprintf(stderr," DUMP: ");
254 #ifdef TDEBUG
255 fprintf(stderr, "pid=%d ", getpid());
256 #endif
257 va_start(ap, fmt);
258 vfprintf(stderr, fmt, ap);
259 va_end(ap);
260 fflush(stdout);
261 fflush(stderr);
262 dumpabort(0);
266 * Tell the operator what has to be done;
267 * we don't actually do it
270 static struct fstab *
271 allocfsent(struct fstab *fs)
273 struct fstab *new;
275 new = (struct fstab *)malloc(sizeof (*fs));
276 if (new == NULL ||
277 (new->fs_file = strdup(fs->fs_file)) == NULL ||
278 (new->fs_type = strdup(fs->fs_type)) == NULL ||
279 (new->fs_spec = strdup(fs->fs_spec)) == NULL)
280 quit("%s\n", strerror(errno));
281 new->fs_passno = fs->fs_passno;
282 new->fs_freq = fs->fs_freq;
283 return (new);
286 struct pfstab {
287 SLIST_ENTRY(pfstab) pf_list;
288 struct fstab *pf_fstab;
291 static SLIST_HEAD(, pfstab) table;
293 void
294 dump_getfstab(void)
296 struct fstab *fs;
297 struct pfstab *pf;
299 if (setfsent() == 0) {
300 msg("Can't open %s for dump table information: %s\n",
301 _PATH_FSTAB, strerror(errno));
302 return;
304 while ((fs = getfsent()) != NULL) {
305 if (strcmp(fs->fs_type, FSTAB_RW) &&
306 strcmp(fs->fs_type, FSTAB_RO) &&
307 strcmp(fs->fs_type, FSTAB_RQ))
308 continue;
309 fs = allocfsent(fs);
310 if ((pf = (struct pfstab *)malloc(sizeof (*pf))) == NULL)
311 quit("%s\n", strerror(errno));
312 pf->pf_fstab = fs;
313 SLIST_INSERT_HEAD(&table, pf, pf_list);
315 endfsent();
319 * Search in the fstab for a file name.
320 * This file name can be either the special or the path file name.
322 * The file name can omit the leading '/'.
324 struct fstab *
325 fstabsearch(const char *key)
327 struct pfstab *pf;
328 struct fstab *fs;
329 char *rn;
331 SLIST_FOREACH(pf, &table, pf_list) {
332 fs = pf->pf_fstab;
333 if (strcmp(fs->fs_file, key) == 0 ||
334 strcmp(fs->fs_spec, key) == 0)
335 return (fs);
336 rn = rawname(fs->fs_spec);
337 if (rn != NULL && strcmp(rn, key) == 0)
338 return (fs);
339 if (key[0] != '/') {
340 if (*fs->fs_spec == '/' &&
341 strcmp(fs->fs_spec + 1, key) == 0)
342 return (fs);
343 if (*fs->fs_file == '/' &&
344 strcmp(fs->fs_file + 1, key) == 0)
345 return (fs);
348 return (NULL);
352 * Tell the operator what to do
354 * char arg: w ==> just what to do; W ==> most recent dumps
356 void
357 lastdump(int arg)
359 int i;
360 struct fstab *dt;
361 struct dumpdates *dtwalk;
362 const char *lastname;
363 char *date;
364 int dumpme;
365 time_t tnow;
366 struct tm *tlast;
368 time(&tnow);
369 dump_getfstab(); /* /etc/fstab input */
370 initdumptimes(); /* /etc/dumpdates input */
371 qsort(ddatev, nddates, sizeof(struct dumpdates *), datesort);
373 if (arg == 'w')
374 printf("Dump these file systems:\n");
375 else
376 printf("Last dump(s) done (Dump '>' file systems):\n");
377 lastname = "??";
378 ITITERATE(i, dtwalk) {
379 if (strncmp(lastname, dtwalk->dd_name,
380 sizeof(dtwalk->dd_name)) == 0)
381 continue;
382 date = (char *)ctime(&dtwalk->dd_ddate);
383 date[16] = '\0'; /* blast away seconds and year */
384 lastname = dtwalk->dd_name;
385 dt = fstabsearch(dtwalk->dd_name);
386 dumpme = (dt != NULL && dt->fs_freq != 0);
387 if (dumpme) {
388 tlast = localtime(&dtwalk->dd_ddate);
389 dumpme = tnow > (dtwalk->dd_ddate - (tlast->tm_hour * 3600)
390 - (tlast->tm_min * 60) - tlast->tm_sec
391 + (dt->fs_freq * 86400));
393 if (arg != 'w' || dumpme)
394 printf(
395 "%c %8s\t(%6s) Last dump: Level %c, Date %s\n",
396 dumpme && (arg != 'w') ? '>' : ' ',
397 dtwalk->dd_name,
398 dt ? dt->fs_file : "",
399 dtwalk->dd_level,
400 date);
404 static int
405 datesort(const void *a1, const void *a2)
407 const struct dumpdates *d1 = *(const struct dumpdates * const *)a1;
408 const struct dumpdates *d2 = *(const struct dumpdates * const *)a2;
409 int diff;
411 diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name));
412 if (diff == 0)
413 return (d2->dd_ddate - d1->dd_ddate);
414 return (diff);