/* $OpenBSD: main.c,v 1.31 2002/02/16 21:27:33 millert Exp $ */ /* $NetBSD: main.c,v 1.14 1997/06/05 11:13:24 lukem Exp $ */ /*- * Copyright (c) 1980, 1991, 1993, 1994 * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 static char copyright[] = "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94"; #else static char rcsid[] = "$NetBSD: main.c,v 1.8 1996/03/15 22:39:32 scottr Exp $"; #endif #endif /* not lint */ #include <sys/param.h> #include <sys/mount.h> #include <sys/stat.h> #include <sys/time.h> #ifdef sunos #include <sys/vnode.h> #include <ufs/inode.h> #include <ufs/fs.h> #else #include <ufs/ffs/fs.h> #include <ufs/ufs/dinode.h> #endif #include <protocols/dumprestore.h> #include <ctype.h> #include <err.h> #include <errno.h> #include <fcntl.h> #include <fstab.h> #include <paths.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include <unistd.h> #include "dump.h" #include "pathnames.h" #ifndef SBOFF #define SBOFF (SBLOCK * DEV_BSIZE) #endif int notify = 0; /* notify operator flag */ int blockswritten = 0; /* number of blocks written on current tape */ int tapeno = 0; /* current tape number */ int density = 0; /* density in bytes/0.1" */ int ntrec = NTREC; /* # tape blocks in each tape record */ int cartridge = 0; /* Assume non-cartridge tape */ long dev_bsize = 1; /* recalculated below */ long blocksperfile; /* output blocks per file */ char *host = NULL; /* remote host (if any) */ int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */ static long numarg(char *, long, long); static void obsolete(int *, char **[]); static void usage(void); int main(argc, argv) int argc; char *argv[]; { ino_t ino; int dirty; struct dinode *dp; struct fstab *dt; char *map; int ch; struct tm then; struct statfs fsbuf; int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1; ino_t maxino; time_t tnow; int dirlist; char *toplevel, *str, *mount_point = NULL; spcl.c_date = 0; (void)time((time_t *)&spcl.c_date); tsize = 0; /* Default later, based on 'c' option for cart tapes */ if ((tape = getenv("TAPE")) == NULL) tape = _PATH_DEFTAPE; dumpdates = _PATH_DUMPDATES; temp = _PATH_DTMP; if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); level = '0'; if (argc < 2) usage(); obsolete(&argc, &argv); while ((ch = getopt(argc, argv, "0123456789aB:b:cd:f:h:ns:T:uWw")) != -1) switch (ch) { /* dump level */ case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': level = ch; break; case 'B': /* blocks per output file */ blocksperfile = numarg("blocks per file", 1L, 0L); break; case 'b': /* blocks per tape write */ ntrec = numarg("blocks per write", 1L, 1000L); if (ntrec > maxbsize/1024) { msg("Please choose a blocksize <= %dKB\n", maxbsize/1024); exit(X_STARTUP); } bflag = 1; break; case 'c': /* Tape is cart. not 9-track */ cartridge = 1; break; case 'd': /* density, in bits per inch */ density = numarg("density", 10L, 327670L) / 10; if (density >= 625 && !bflag) ntrec = HIGHDENSITYTREC; break; case 'f': /* output file */ tape = optarg; break; case 'h': honorlevel = numarg("honor level", 0L, 10L); break; case 'n': /* notify operators */ notify = 1; break; case 's': /* tape size, feet */ tsize = numarg("tape size", 1L, 0L) * 12 * 10; break; case 'T': /* time of last dump */ str = strptime(optarg, "%a %b %e %H:%M:%S %Y", &then); then.tm_isdst = -1; if (str == NULL || (*str != '\n' && *str != '\0')) spcl.c_ddate = (time_t) -1; else spcl.c_ddate = mktime(&then); if (spcl.c_ddate < 0) { (void)fprintf(stderr, "bad time \"%s\"\n", optarg); exit(X_STARTUP); } Tflag = 1; lastlevel = '?'; break; case 'u': /* update /etc/dumpdates */ uflag = 1; break; case 'W': /* what to do */ case 'w': lastdump(ch); exit(X_FINOK); /* do nothing else */ case 'a': /* `auto-size', Write to EOM. */ unlimited = 1; break; default: usage(); } argc -= optind; argv += optind; if (argc < 1) { (void)fprintf(stderr, "Must specify disk or filesystem\n"); exit(X_STARTUP); } /* * determine if disk is a subdirectory, and setup appropriately */ dirlist = 0; toplevel = NULL; for (i = 0; i < argc; i++) { struct stat sb; if (lstat(argv[i], &sb) == -1) { msg("Cannot lstat %s: %s\n", argv[i], strerror(errno)); exit(X_STARTUP); } if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) break; if (statfs(argv[i], &fsbuf) == -1) { msg("Cannot statfs %s: %s\n", argv[i], strerror(errno)); exit(X_STARTUP); } if (strcmp(argv[i], fsbuf.f_mntonname) == 0) { if (dirlist != 0) { msg("Can't dump a mountpoint and a filelist\n"); exit(X_STARTUP); } break; /* exit if sole mountpoint */ } if (!disk) { if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) { msg("Cannot malloc diskname\n"); exit(X_STARTUP); } disk = toplevel; if (uflag) { msg("Ignoring u flag for subdir dump\n"); uflag = 0; } if (level > '0') { msg("Subdir dump is done at level 0\n"); level = '0'; } msg("Dumping sub files/directories from %s\n", disk); } else { if (strcmp(disk, fsbuf.f_mntonname) != 0) { msg("%s is not on %s\n", argv[i], disk); exit(X_STARTUP); } } msg("Dumping file/directory %s\n", argv[i]); dirlist++; } if (dirlist == 0) { disk = *argv++; if (argc != 1) { (void)fputs("Excess arguments to dump:", stderr); while (--argc) { (void)putc(' ', stderr); (void)fputs(*argv++, stderr); } (void)putc('\n', stderr); exit(X_STARTUP); } } if (Tflag && uflag) { (void)fprintf(stderr, "You cannot use the T and u flags together.\n"); exit(X_STARTUP); } if (strcmp(tape, "-") == 0) { pipeout++; tape = "standard output"; } if (blocksperfile) blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ else if (!unlimited) { /* * Determine how to default tape size and density * * density tape size * 9-track 1600 bpi (160 bytes/.1") 2300 ft. * 9-track 6250 bpi (625 bytes/.1") 2300 ft. * cartridge 8000 bpi (100 bytes/.1") 1700 ft. * (450*4 - slop) */ if (density == 0) density = cartridge ? 100 : 160; if (tsize == 0) tsize = cartridge ? 1700L*120L : 2300L*120L; } if (strchr(tape, ':')) { host = tape; tape = strchr(host, ':'); *tape++ = '\0'; #ifdef RDUMP if (rmthost(host) == 0) exit(X_STARTUP); #else (void)fprintf(stderr, "remote dump not enabled\n"); exit(X_STARTUP); #endif } if (signal(SIGHUP, SIG_IGN) != SIG_IGN) signal(SIGHUP, sig); if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) signal(SIGTRAP, sig); if (signal(SIGFPE, SIG_IGN) != SIG_IGN) signal(SIGFPE, sig); if (signal(SIGBUS, SIG_IGN) != SIG_IGN) signal(SIGBUS, sig); if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) signal(SIGSEGV, sig); if (signal(SIGTERM, SIG_IGN) != SIG_IGN) signal(SIGTERM, sig); if (signal(SIGINT, interrupt) == SIG_IGN) signal(SIGINT, SIG_IGN); getfstab(); /* /etc/fstab snarfed */ /* * disk can be either the full special file name, * the suffix of the special file name, * the special name missing the leading '/', * the file system name with or without the leading '/'. */ if (!statfs(disk, &fsbuf) && !strcmp(fsbuf.f_mntonname, disk)) { /* mounted disk? */ disk = rawname(fsbuf.f_mntfromname); if (!disk) { (void)fprintf(stderr, "cannot get raw name for %s\n", fsbuf.f_mntfromname); exit(X_STARTUP); } mount_point = fsbuf.f_mntonname; (void)strlcpy(spcl.c_dev, fsbuf.f_mntfromname, sizeof(spcl.c_dev)); if (dirlist != 0) { (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), "a subset of %s", mount_point); } else { (void)strlcpy(spcl.c_filesys, mount_point, sizeof(spcl.c_filesys)); } } else if ((dt = fstabsearch(disk)) != NULL) { /* in fstab? */ disk = rawname(dt->fs_spec); mount_point = dt->fs_file; (void)strlcpy(spcl.c_dev, dt->fs_spec, sizeof(spcl.c_dev)); if (dirlist != 0) { (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), "a subset of %s", mount_point); } else { (void)strlcpy(spcl.c_filesys, mount_point, sizeof(spcl.c_filesys)); } } else { /* must be a device */ (void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev)); (void)strlcpy(spcl.c_filesys, "an unlisted file system", sizeof(spcl.c_filesys)); } (void)strlcpy(spcl.c_label, "none", sizeof(spcl.c_label)); (void)gethostname(spcl.c_host, sizeof(spcl.c_host)); spcl.c_level = level - '0'; spcl.c_type = TS_TAPE; if (!Tflag) getdumptime(); /* /etc/dumpdates snarfed */ msg("Date of this level %c dump: %s", level, spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); msg("Date of last level %c dump: %s", lastlevel, spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate)); msg("Dumping %s ", disk); if (mount_point != NULL) msgtail("(%s) ", mount_point); if (host) msgtail("to %s on host %s\n", tape, host); else msgtail("to %s\n", tape); if ((diskfd = open(disk, O_RDONLY)) < 0) { msg("Cannot open %s\n", disk); exit(X_STARTUP); } sync(); sblock = (struct fs *)sblock_buf; bread(SBOFF, (char *) sblock, SBSIZE); if (sblock->fs_magic != FS_MAGIC) quit("bad sblock magic number\n"); dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1); dev_bshift = ffs(dev_bsize) - 1; if (dev_bsize != (1 << dev_bshift)) quit("dev_bsize (%d) is not a power of 2\n", dev_bsize); tp_bshift = ffs(TP_BSIZE) - 1; if (TP_BSIZE != (1 << tp_bshift)) quit("TP_BSIZE (%d) is not a power of 2\n", TP_BSIZE); #ifdef FS_44INODEFMT if (sblock->fs_inodefmt >= FS_44INODEFMT) spcl.c_flags |= DR_NEWINODEFMT; #endif maxino = sblock->fs_ipg * sblock->fs_ncg; mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char)); dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char)); tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); nonodump = spcl.c_level < honorlevel; (void)signal(SIGINFO, statussig); msg("mapping (Pass I) [regular files]\n"); anydirskipped = mapfiles(maxino, &tapesize, toplevel, (dirlist ? argv : NULL)); msg("mapping (Pass II) [directories]\n"); while (anydirskipped) { anydirskipped = mapdirs(maxino, &tapesize); } if (pipeout || unlimited) { tapesize += 10; /* 10 trailer blocks */ msg("estimated %qd tape blocks.\n", tapesize); } else { double fetapes; if (blocksperfile) fetapes = (double) tapesize / blocksperfile; else if (cartridge) { /* Estimate number of tapes, assuming streaming stops at the end of each block written, and not in mid-block. Assume no erroneous blocks; this can be compensated for with an artificially low tape size. */ fetapes = ( tapesize /* blocks */ * TP_BSIZE /* bytes/block */ * (1.0/density) /* 0.1" / byte */ + tapesize /* blocks */ * (1.0/ntrec) /* streaming-stops per block */ * 15.48 /* 0.1" / streaming-stop */ ) * (1.0 / tsize ); /* tape / 0.1" */ } else { /* Estimate number of tapes, for old fashioned 9-track tape */ int tenthsperirg = (density == 625) ? 3 : 7; fetapes = ( tapesize /* blocks */ * TP_BSIZE /* bytes / block */ * (1.0/density) /* 0.1" / byte */ + tapesize /* blocks */ * (1.0/ntrec) /* IRG's / block */ * tenthsperirg /* 0.1" / IRG */ ) * (1.0 / tsize ); /* tape / 0.1" */ } etapes = fetapes; /* truncating assignment */ etapes++; /* count the dumped inodes map on each additional tape */ tapesize += (etapes - 1) * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); tapesize += etapes + 10; /* headers + 10 trailer blks */ msg("estimated %qd tape blocks on %3.2f tape(s).\n", tapesize, fetapes); } /* * Allocate tape buffer. */ if (!alloctape()) quit("can't allocate tape buffers - try a smaller blocking factor.\n"); startnewtape(1); (void)time((time_t *)&(tstart_writing)); xferrate = 0; dumpmap(usedinomap, TS_CLRI, maxino - 1); msg("dumping (Pass III) [directories]\n"); dirty = 0; /* XXX just to get gcc to shut up */ for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ dirty = *map++; else dirty >>= 1; if ((dirty & 1) == 0) continue; /* * Skip directory inodes deleted and maybe reallocated */ dp = getino(ino); if ((dp->di_mode & IFMT) != IFDIR) continue; (void)dumpino(dp, ino); } msg("dumping (Pass IV) [regular files]\n"); for (map = dumpinomap, ino = 1; ino < maxino; ino++) { int mode; if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ dirty = *map++; else dirty >>= 1; if ((dirty & 1) == 0) continue; /* * Skip inodes deleted and reallocated as directories. */ dp = getino(ino); mode = dp->di_mode & IFMT; if (mode == IFDIR) continue; (void)dumpino(dp, ino); } spcl.c_type = TS_END; for (i = 0; i < ntrec; i++) writeheader(maxino - 1); if (pipeout) msg("%ld tape blocks\n", spcl.c_tapea); else msg("%ld tape blocks on %d volume%s\n", spcl.c_tapea, spcl.c_volume, (spcl.c_volume == 1) ? "" : "s"); tnow = do_stats(); msg("Date of this level %c dump: %s", level, spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date)); msg("Date this dump completed: %s", ctime(&tnow)); msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno); putdumptime(); trewind(); broadcast("DUMP IS DONE!\7\7\n"); msg("DUMP IS DONE\n"); Exit(X_FINOK); /* NOTREACHED */ } static void usage() { extern char *__progname; (void)fprintf(stderr, "usage: %s [-0123456789acnu] [-B records]" "[-b blocksize] [-d density] [-f file]\n" " [-h level] [-s feet] [-T date] filesystem\n" " %s [-W | -w]\n", __progname, __progname); exit(X_STARTUP); } /* * Pick up a numeric argument. It must be nonnegative and in the given * range (except that a vmax of 0 means unlimited). */ static long numarg(meaning, vmin, vmax) char *meaning; long vmin, vmax; { char *p; long val; val = strtol(optarg, &p, 10); if (*p) errx(X_STARTUP, "illegal %s -- %s", meaning, optarg); if (val < vmin || (vmax && val > vmax)) errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax); return (val); } void sig(signo) int signo; { switch(signo) { case SIGALRM: case SIGBUS: case SIGFPE: case SIGHUP: case SIGTERM: case SIGTRAP: if (pipeout) quit("Signal on pipe: cannot recover\n"); msg("Rewriting attempted as response to unknown signal.\n"); (void)fflush(stderr); (void)fflush(stdout); close_rewind(); exit(X_REWRITE); /* NOTREACHED */ case SIGSEGV: msg("SIGSEGV: ABORTING!\n"); (void)signal(SIGSEGV, SIG_DFL); (void)kill(0, SIGSEGV); /* NOTREACHED */ } } char * rawname(cp) char *cp; { static char rawbuf[MAXPATHLEN]; char *dp = strrchr(cp, '/'); if (dp == NULL) return (NULL); *dp = '\0'; (void)snprintf(rawbuf, sizeof(rawbuf), "%s/r%s", cp, dp + 1); *dp = '/'; return (rawbuf); } /* * obsolete -- * Change set of key letters and ordered arguments into something * getopt(3) will like. */ static void obsolete(argcp, argvp) int *argcp; char **argvp[]; { int argc, flags; char *ap, **argv, *flagsp, **nargv, *p; /* Setup. */ argv = *argvp; argc = *argcp; /* Return if no arguments or first argument has leading dash. */ ap = argv[1]; if (argc == 1 || *ap == '-') return; /* Allocate space for new arguments. */ if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL || (p = flagsp = malloc(strlen(ap) + 2)) == NULL) err(1, NULL); *nargv++ = *argv; argv += 2; for (flags = 0; *ap; ++ap) { switch (*ap) { case 'B': case 'b': case 'd': case 'f': case 'h': case 's': case 'T': if (*argv == NULL) { warnx("option requires an argument -- %c", *ap); usage(); } if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL) err(1, NULL); nargv[0][0] = '-'; nargv[0][1] = *ap; (void)strcpy(&nargv[0][2], *argv); ++argv; ++nargv; break; default: if (!flags) { *p++ = '-'; flags = 1; } *p++ = *ap; break; } } /* Terminate flags. */ if (flags) { *p = '\0'; *nargv++ = flagsp; } /* Copy remaining arguments. */ while ((*nargv++ = *argv++)) ; /* Update argument count. */ *argcp = nargv - *argvp - 1; }