/* $OpenBSD: optr.c,v 1.27 2003/07/29 18:38:35 deraadt Exp $ */ /* $NetBSD: optr.c,v 1.11 1997/05/27 08:34:36 mrg Exp $ */ /*- * Copyright (c) 1980, 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint #if 0 static char sccsid[] = "@(#)optr.c 8.2 (Berkeley) 1/6/94"; #else static const char rcsid[] = "$OpenBSD: optr.c,v 1.27 2003/07/29 18:38:35 deraadt Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dump.h" #include "pathnames.h" void alarmcatch(int); int datesort(const void *, const void *); /* * Query the operator; This previously-fascist piece of code * no longer requires an exact response. * It is intended to protect dump aborting by inquisitive * people banging on the console terminal to see what is * happening which might cause dump to croak, destroying * a large number of hours of work. * * Every 2 minutes we reprint the message, alerting others * that dump needs attention. */ static int timeout; static char *attnmessage; /* attention message */ int query(char *question) { char replybuffer[64]; int back, errcount; FILE *mytty; time_t firstprompt, when_answered; (void) time(&firstprompt); if ((mytty = fopen(_PATH_TTY, "r")) == NULL) quit("fopen on %s fails: %s\n", _PATH_TTY, strerror(errno)); attnmessage = question; timeout = 0; alarmcatch(0); back = -1; errcount = 0; do { if (fgets(replybuffer, 63, mytty) == NULL) { clearerr(mytty); if (++errcount > 30) /* XXX ugly */ quit("excessive operator query failures\n"); } else if (replybuffer[0] == 'y' || replybuffer[0] == 'Y') { back = 1; } else if (replybuffer[0] == 'n' || replybuffer[0] == 'N') { back = 0; } else { (void) fprintf(stderr, " DUMP: \"Yes\" or \"No\"?\n"); (void) fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ", question); } } while (back < 0); /* * Turn off the alarm, and reset the signal to trap out.. */ (void) alarm(0); if (signal(SIGALRM, sig) == SIG_IGN) signal(SIGALRM, SIG_IGN); (void) fclose(mytty); (void) time(&when_answered); /* * Adjust the base for time estimates to ignore time we spent waiting * for operator input. */ if (when_answered - firstprompt > 0) tstart_writing += (when_answered - firstprompt); return (back); } char lastmsg[BUFSIZ]; /* * Alert the console operator, and enable the alarm clock to * sleep for 2 minutes in case nobody comes to satisfy dump * XXX not safe */ void alarmcatch(int signo) { int save_errno = errno; if (notify == 0) { if (timeout == 0) (void) fprintf(stderr, " DUMP: %s: (\"yes\" or \"no\") ", attnmessage); else msgtail("\7\7"); } else { if (timeout) { msgtail("\n"); broadcast(""); /* just print last msg */ } (void) fprintf(stderr," DUMP: %s: (\"yes\" or \"no\") ", attnmessage); } signal(SIGALRM, alarmcatch); (void) alarm(120); timeout = 1; errno = save_errno; } /* * Here if an inquisitive operator interrupts the dump program */ void interrupt(int signo) { msg("Interrupt received.\n"); if (query("Do you want to abort dump?")) dumpabort(0); } /* * We now use wall(1) to do the actual broadcasting. */ void broadcast(char *message) { FILE *fp; char buf[sizeof(_PATH_WALL) + sizeof(OPGRENT) + 3]; if (!notify) return; (void)snprintf(buf, sizeof(buf), "%s -g %s", _PATH_WALL, OPGRENT); if ((fp = popen(buf, "w")) == NULL) return; (void) fputs("\7\7\7Message from the dump program to all operators\n\nDUMP: NEEDS ATTENTION: ", fp); if (lastmsg[0]) (void) fputs(lastmsg, fp); if (message[0]) (void) fputs(message, fp); (void) pclose(fp); } /* * Print out an estimate of the amount of time left to do the dump */ time_t tschedule = 0; void timeest(void) { time_t tnow, deltat; (void) time((time_t *) &tnow); if (tnow >= tschedule) { tschedule = tnow + 300; if (blockswritten < 500) return; deltat = tstart_writing - tnow + (1.0 * (tnow - tstart_writing)) / blockswritten * tapesize; msg("%3.2f%% done, finished in %d:%02d\n", (blockswritten * 100.0) / tapesize, deltat / 3600, (deltat % 3600) / 60); } } void msg(const char *fmt, ...) { va_list ap; (void) fprintf(stderr," DUMP: "); #ifdef TDEBUG (void) fprintf(stderr, "pid=%d ", getpid()); #endif va_start(ap, fmt); (void) vfprintf(stderr, fmt, ap); va_end(ap); (void) fflush(stdout); (void) fflush(stderr); va_start(ap, fmt); (void) vsnprintf(lastmsg, sizeof(lastmsg), fmt, ap); va_end(ap); } void msgtail(const char *fmt, ...) { va_list ap; va_start(ap, fmt); (void) vfprintf(stderr, fmt, ap); va_end(ap); } void quit(const char *fmt, ...) { va_list ap; (void) fprintf(stderr," DUMP: "); #ifdef TDEBUG (void) fprintf(stderr, "pid=%d ", getpid()); #endif va_start(ap, fmt); (void) vfprintf(stderr, fmt, ap); va_end(ap); (void) fflush(stdout); (void) fflush(stderr); dumpabort(0); } /* * Tell the operator what has to be done; * we don't actually do it */ struct fstab * allocfsent(struct fstab *fs) { struct fstab *new; new = (struct fstab *)malloc(sizeof(*fs)); if (new == NULL || (new->fs_file = strdup(fs->fs_file)) == NULL || (new->fs_type = strdup(fs->fs_type)) == NULL || (new->fs_spec = strdup(fs->fs_spec)) == NULL) quit("%s\n", strerror(errno)); new->fs_passno = fs->fs_passno; new->fs_freq = fs->fs_freq; return (new); } struct pfstab { struct pfstab *pf_next; struct fstab *pf_fstab; }; static struct pfstab *table; void getfstab(void) { struct fstab *fs; struct pfstab *pf; if (setfsent() == 0) { msg("Can't open %s for dump table information: %s\n", _PATH_FSTAB, strerror(errno)); return; } while ((fs = getfsent()) != NULL) { if (strcmp(fs->fs_vfstype, "ffs") && strcmp(fs->fs_vfstype, "ufs")) continue; if (strcmp(fs->fs_type, FSTAB_RW) && strcmp(fs->fs_type, FSTAB_RO) && strcmp(fs->fs_type, FSTAB_RQ)) continue; fs = allocfsent(fs); if ((pf = (struct pfstab *)malloc(sizeof(*pf))) == NULL) quit("%s\n", strerror(errno)); pf->pf_fstab = fs; pf->pf_next = table; table = pf; } (void) endfsent(); } /* * Search in the fstab for a file name. * This file name can be either the special or the path file name. * * The entries in the fstab are the BLOCK special names, not the * character special names. * The caller of fstabsearch assures that the character device * is dumped (that is much faster) * * The file name can omit the leading '/'. */ struct fstab * fstabsearch(char *key) { struct pfstab *pf; struct fstab *fs; char *rn; for (pf = table; pf != NULL; pf = pf->pf_next) { fs = pf->pf_fstab; if (strcmp(fs->fs_file, key) == 0 || strcmp(fs->fs_spec, key) == 0) return (fs); rn = rawname(fs->fs_spec); if (rn != NULL && strcmp(rn, key) == 0) return (fs); if (key[0] != '/') { if (*fs->fs_spec == '/' && strcmp(fs->fs_spec + 1, key) == 0) return (fs); if (*fs->fs_file == '/' && strcmp(fs->fs_file + 1, key) == 0) return (fs); } } return (NULL); } /* * Tell the operator what to do * w ==> just what to do; W ==> most recent dumps */ void lastdump(int arg) { int i; struct fstab *dt; struct dumpdates *dtwalk; char *lastname, *date; int dumpme; time_t tnow; (void) time(&tnow); getfstab(); /* /etc/fstab input */ initdumptimes(); /* /etc/dumpdates input */ qsort((char *) ddatev, nddates, sizeof(struct dumpdates *), datesort); if (arg == 'w') (void) printf("Dump these file systems:\n"); else (void) printf("Last dump(s) done (Dump '>' file systems):\n"); lastname = "??"; ITITERATE(i, dtwalk) { if (strncmp(lastname, dtwalk->dd_name, sizeof(dtwalk->dd_name)) == 0) continue; date = (char *)ctime(&dtwalk->dd_ddate); date[16] = '\0'; /* blast away seconds and year */ lastname = dtwalk->dd_name; dt = fstabsearch(dtwalk->dd_name); dumpme = (dt != NULL && dt->fs_freq != 0 && dtwalk->dd_ddate < tnow - (dt->fs_freq * SECSPERDAY)); if (arg != 'w' || dumpme) (void) printf( "%c %8s\t(%6s) Last dump: Level %c, Date %s\n", dumpme && (arg != 'w') ? '>' : ' ', dtwalk->dd_name, dt ? dt->fs_file : "", dtwalk->dd_level, date); } } int datesort(const void *a1, const void *a2) { struct dumpdates *d1 = *(struct dumpdates **)a1; struct dumpdates *d2 = *(struct dumpdates **)a2; int diff; diff = strncmp(d1->dd_name, d2->dd_name, sizeof(d1->dd_name)); if (diff == 0) return (d2->dd_ddate - d1->dd_ddate); return (diff); }