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-rw-r--r--sbin/dump/main.c560
1 files changed, 560 insertions, 0 deletions
diff --git a/sbin/dump/main.c b/sbin/dump/main.c
new file mode 100644
index 0000000..40d668e
--- /dev/null
+++ b/sbin/dump/main.c
@@ -0,0 +1,560 @@
+/*-
+ * 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
+static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94";
+#endif /* not lint */
+
+#include <sys/param.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 <errno.h>
+#include <fcntl.h>
+#include <fstab.h>
+#include <signal.h>
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#endif
+
+#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) */
+
+static long numarg __P((int, char *, long, long, int *, char ***));
+static __dead void missingarg __P((int, char *));
+
+int
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ register ino_t ino;
+ register int dirty;
+ register struct dinode *dp;
+ register struct fstab *dt;
+ register char *map;
+ register char *cp;
+ int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
+ ino_t maxino;
+
+ spcl.c_date = 0;
+ (void)time((time_t *)&spcl.c_date);
+
+ tsize = 0; /* Default later, based on 'c' option for cart tapes */
+ 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 == 1) {
+ (void) fprintf(stderr, "Must specify a key.\n");
+ Exit(X_ABORT);
+ }
+ argv++;
+ argc -= 2;
+ for (cp = *argv++; cp != NULL && *cp != '\0'; cp++) {
+ switch (*cp) {
+ case '-':
+ break;
+
+ case 'w':
+ lastdump('w'); /* tell us only what has to be done */
+ exit(0);
+
+ case 'W': /* what to do */
+ lastdump('W'); /* tell us state of what is done */
+ exit(0); /* do nothing else */
+
+ case 'f': /* output file */
+ if (argc < 1)
+ missingarg('f', "output file");
+ tape = *argv++;
+ argc--;
+ break;
+
+ case 'd': /* density, in bits per inch */
+ density = numarg('d', "density",
+ 10L, 327670L, &argc, &argv) / 10;
+ if (density >= 625 && !bflag)
+ ntrec = HIGHDENSITYTREC;
+ break;
+
+ case 's': /* tape size, feet */
+ tsize = numarg('s', "size",
+ 1L, 0L, &argc, &argv) * 12 * 10;
+ break;
+
+ case 'T': /* time of last dump */
+ if (argc < 1)
+ missingarg('T', "time of last dump");
+ spcl.c_ddate = unctime(*argv);
+ if (spcl.c_ddate < 0) {
+ (void)fprintf(stderr, "bad time \"%s\"\n",
+ *argv);
+ exit(X_ABORT);
+ }
+ Tflag = 1;
+ lastlevel = '?';
+ argc--;
+ argv++;
+ break;
+
+ case 'b': /* blocks per tape write */
+ ntrec = numarg('b', "number of blocks per write",
+ 1L, 1000L, &argc, &argv);
+ break;
+
+ case 'B': /* blocks per output file */
+ blocksperfile = numarg('B', "number of blocks per file",
+ 1L, 0L, &argc, &argv);
+ break;
+
+ case 'c': /* Tape is cart. not 9-track */
+ cartridge = 1;
+ break;
+
+ /* dump level */
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ level = *cp;
+ break;
+
+ case 'u': /* update /etc/dumpdates */
+ uflag = 1;
+ break;
+
+ case 'n': /* notify operators */
+ notify = 1;
+ break;
+
+ case 'h':
+ honorlevel = numarg('h', "honor level",
+ 0L, 10L, &argc, &argv);
+ break;
+
+ default:
+ (void)fprintf(stderr, "bad key '%c'\n", *cp);
+ exit(X_ABORT);
+ }
+ }
+ if (argc < 1) {
+ (void)fprintf(stderr, "Must specify disk or filesystem\n");
+ exit(X_ABORT);
+ }
+ disk = *argv++;
+ argc--;
+ if (argc >= 1) {
+ (void)fprintf(stderr, "Unknown arguments to dump:");
+ while (argc--)
+ (void)fprintf(stderr, " %s", *argv++);
+ (void)fprintf(stderr, "\n");
+ exit(X_ABORT);
+ }
+ if (Tflag && uflag) {
+ (void)fprintf(stderr,
+ "You cannot use the T and u flags together.\n");
+ exit(X_ABORT);
+ }
+ if (strcmp(tape, "-") == 0) {
+ pipeout++;
+ tape = "standard output";
+ }
+
+ if (blocksperfile)
+ blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
+ else {
+ /*
+ * 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 (index(tape, ':')) {
+ host = tape;
+ tape = index(host, ':');
+ *tape++ = '\0';
+#ifdef RDUMP
+ if (rmthost(host) == 0)
+ exit(X_ABORT);
+#else
+ (void)fprintf(stderr, "remote dump not enabled\n");
+ exit(X_ABORT);
+#endif
+ }
+ (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
+
+ 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);
+
+ set_operators(); /* /etc/group snarfed */
+ 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 '/'.
+ */
+ dt = fstabsearch(disk);
+ if (dt != NULL) {
+ disk = rawname(dt->fs_spec);
+ (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
+ (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
+ } else {
+ (void)strncpy(spcl.c_dev, disk, NAMELEN);
+ (void)strncpy(spcl.c_filesys, "an unlisted file system",
+ NAMELEN);
+ }
+ (void)strcpy(spcl.c_label, "none");
+ (void)gethostname(spcl.c_host, NAMELEN);
+ 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 (dt != NULL)
+ msgtail("(%s) ", dt->fs_file);
+ 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_ABORT);
+ }
+ 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", dev_bsize);
+ tp_bshift = ffs(TP_BSIZE) - 1;
+ if (TP_BSIZE != (1 << tp_bshift))
+ quit("TP_BSIZE (%d) is not a power of 2", 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;
+
+ msg("mapping (Pass I) [regular files]\n");
+ anydirskipped = mapfiles(maxino, &tapesize);
+
+ msg("mapping (Pass II) [directories]\n");
+ while (anydirskipped) {
+ anydirskipped = mapdirs(maxino, &tapesize);
+ }
+
+ if (pipeout) {
+ tapesize += 10; /* 10 trailer blocks */
+ msg("estimated %ld 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 %ld 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));
+ 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("DUMP: %ld tape blocks\n",spcl.c_tapea);
+ else
+ msg("DUMP: %ld tape blocks on %d volumes(s)\n",
+ spcl.c_tapea, spcl.c_volume);
+ putdumptime();
+ trewind();
+ broadcast("DUMP IS DONE!\7\7\n");
+ msg("DUMP IS DONE\n");
+ Exit(X_FINOK);
+ /* NOTREACHED */
+}
+
+/*
+ * 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(letter, meaning, vmin, vmax, pargc, pargv)
+ int letter;
+ char *meaning;
+ long vmin, vmax;
+ int *pargc;
+ char ***pargv;
+{
+ register char *p;
+ long val;
+ char *str;
+
+ if (--*pargc < 0)
+ missingarg(letter, meaning);
+ str = *(*pargv)++;
+ for (p = str; *p; p++)
+ if (!isdigit(*p))
+ goto bad;
+ val = atol(str);
+ if (val < vmin || (vmax && val > vmax))
+ goto bad;
+ return (val);
+
+bad:
+ (void)fprintf(stderr, "bad '%c' (%s) value \"%s\"\n",
+ letter, meaning, str);
+ exit(X_ABORT);
+}
+
+static __dead void
+missingarg(letter, meaning)
+ int letter;
+ char *meaning;
+{
+
+ (void)fprintf(stderr, "The '%c' flag (%s) requires an argument\n",
+ letter, meaning);
+ exit(X_ABORT);
+}
+
+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 = rindex(cp, '/');
+
+ if (dp == NULL)
+ return (NULL);
+ *dp = '\0';
+ (void)strcpy(rawbuf, cp);
+ *dp = '/';
+ (void)strcat(rawbuf, "/r");
+ (void)strcat(rawbuf, dp + 1);
+ return (rawbuf);
+}
+
+#ifdef sunos
+const char *
+strerror(errnum)
+ int errnum;
+{
+ extern int sys_nerr;
+ extern const char *const sys_errlist[];
+
+ if (errnum < sys_nerr)
+ return (sys_errlist[errnum]);
+ else
+ return ("bogus errno in strerror");
+}
+#endif
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