tape.c revision 92837
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1983, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * (c) UNIX System Laboratories, Inc. 51558Srgrimes * All or some portions of this file are derived from material licensed 61558Srgrimes * to the University of California by American Telephone and Telegraph 71558Srgrimes * Co. or Unix System Laboratories, Inc. and are reproduced herein with 81558Srgrimes * the permission of UNIX System Laboratories, Inc. 91558Srgrimes * 101558Srgrimes * Redistribution and use in source and binary forms, with or without 111558Srgrimes * modification, are permitted provided that the following conditions 121558Srgrimes * are met: 131558Srgrimes * 1. Redistributions of source code must retain the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer. 151558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 161558Srgrimes * notice, this list of conditions and the following disclaimer in the 171558Srgrimes * documentation and/or other materials provided with the distribution. 181558Srgrimes * 3. All advertising materials mentioning features or use of this software 191558Srgrimes * must display the following acknowledgement: 201558Srgrimes * This product includes software developed by the University of 211558Srgrimes * California, Berkeley and its contributors. 221558Srgrimes * 4. Neither the name of the University nor the names of its contributors 231558Srgrimes * may be used to endorse or promote products derived from this software 241558Srgrimes * without specific prior written permission. 251558Srgrimes * 261558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 271558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 281558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 291558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 301558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 311558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 321558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 331558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 341558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 351558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 361558Srgrimes * SUCH DAMAGE. 371558Srgrimes */ 381558Srgrimes 391558Srgrimes#ifndef lint 4037906Scharnier#if 0 4123685Speterstatic char sccsid[] = "@(#)tape.c 8.9 (Berkeley) 5/1/95"; 4237906Scharnier#endif 4337906Scharnierstatic const char rcsid[] = 4450476Speter "$FreeBSD: head/sbin/restore/tape.c 92837 2002-03-20 22:49:40Z imp $"; 451558Srgrimes#endif /* not lint */ 461558Srgrimes 471558Srgrimes#include <sys/param.h> 481558Srgrimes#include <sys/file.h> 491558Srgrimes#include <sys/mtio.h> 501558Srgrimes#include <sys/stat.h> 5166907Swollman#include <sys/time.h> 521558Srgrimes 531558Srgrimes#include <ufs/ufs/dinode.h> 541558Srgrimes#include <protocols/dumprestore.h> 551558Srgrimes 561558Srgrimes#include <errno.h> 5773986Sobrien#include <paths.h> 581558Srgrimes#include <setjmp.h> 591558Srgrimes#include <stdio.h> 601558Srgrimes#include <stdlib.h> 611558Srgrimes#include <string.h> 6266907Swollman#include <time.h> 631558Srgrimes#include <unistd.h> 641558Srgrimes 651558Srgrimes#include "restore.h" 661558Srgrimes#include "extern.h" 671558Srgrimes 681558Srgrimesstatic long fssize = MAXBSIZE; 691558Srgrimesstatic int mt = -1; 701558Srgrimesstatic int pipein = 0; 7121174Sguidostatic char *magtape; 721558Srgrimesstatic int blkcnt; 731558Srgrimesstatic int numtrec; 741558Srgrimesstatic char *tapebuf; 751558Srgrimesstatic union u_spcl endoftapemark; 761558Srgrimesstatic long blksread; /* blocks read since last header */ 7790827Siedowsestatic long tapeaddr = 0; /* current TP_BSIZE tape record */ 781558Srgrimesstatic long tapesread; 791558Srgrimesstatic jmp_buf restart; 801558Srgrimesstatic int gettingfile = 0; /* restart has a valid frame */ 811558Srgrimesstatic char *host = NULL; 821558Srgrimes 831558Srgrimesstatic int ofile; 841558Srgrimesstatic char *map; 851558Srgrimesstatic char lnkbuf[MAXPATHLEN + 1]; 861558Srgrimesstatic int pathlen; 871558Srgrimes 881558Srgrimesint oldinofmt; /* old inode format conversion required */ 891558Srgrimesint Bcvt; /* Swap Bytes (for CCI or sun) */ 901558Srgrimesstatic int Qcvt; /* Swap quads (for sun) */ 911558Srgrimes 921558Srgrimes#define FLUSHTAPEBUF() blkcnt = ntrec + 1 931558Srgrimes 9492837Simpstatic void accthdr(struct s_spcl *); 9592837Simpstatic int checksum(int *); 9692837Simpstatic void findinode(struct s_spcl *); 9792837Simpstatic void findtapeblksize(void); 9892837Simpstatic int gethead(struct s_spcl *); 9992837Simpstatic void readtape(char *); 10092837Simpstatic void setdumpnum(void); 10192837Simpstatic u_long swabl(u_long); 10292837Simpstatic u_char *swablong(u_char *, int); 10392837Simpstatic u_char *swabshort(u_char *, int); 10492837Simpstatic void terminateinput(void); 10592837Simpstatic void xtrfile(char *, long); 10692837Simpstatic void xtrlnkfile(char *, long); 10792837Simpstatic void xtrlnkskip(char *, long); 10892837Simpstatic void xtrmap(char *, long); 10992837Simpstatic void xtrmapskip(char *, long); 11092837Simpstatic void xtrskip(char *, long); 1111558Srgrimes 11237923Simpstatic int readmapflag; 11337923Simp 1141558Srgrimes/* 1151558Srgrimes * Set up an input source 1161558Srgrimes */ 1171558Srgrimesvoid 11892837Simpsetinput(char *source) 1191558Srgrimes{ 1201558Srgrimes FLUSHTAPEBUF(); 1211558Srgrimes if (bflag) 1221558Srgrimes newtapebuf(ntrec); 1231558Srgrimes else 1241558Srgrimes newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC); 1251558Srgrimes terminal = stdin; 1261558Srgrimes 1271558Srgrimes#ifdef RRESTORE 12823685Speter if (strchr(source, ':')) { 1291558Srgrimes host = source; 13023685Speter source = strchr(host, ':'); 1311558Srgrimes *source++ = '\0'; 1321558Srgrimes if (rmthost(host) == 0) 1331558Srgrimes done(1); 1341558Srgrimes } else 1351558Srgrimes#endif 1361558Srgrimes if (strcmp(source, "-") == 0) { 1371558Srgrimes /* 1381558Srgrimes * Since input is coming from a pipe we must establish 1391558Srgrimes * our own connection to the terminal. 1401558Srgrimes */ 1411558Srgrimes terminal = fopen(_PATH_TTY, "r"); 1421558Srgrimes if (terminal == NULL) { 1431558Srgrimes (void)fprintf(stderr, "cannot open %s: %s\n", 1441558Srgrimes _PATH_TTY, strerror(errno)); 1451558Srgrimes terminal = fopen(_PATH_DEVNULL, "r"); 1461558Srgrimes if (terminal == NULL) { 1471558Srgrimes (void)fprintf(stderr, "cannot open %s: %s\n", 1481558Srgrimes _PATH_DEVNULL, strerror(errno)); 1491558Srgrimes done(1); 1501558Srgrimes } 1511558Srgrimes } 1521558Srgrimes pipein++; 1531558Srgrimes } 1541558Srgrimes setuid(getuid()); /* no longer need or want root privileges */ 15521174Sguido magtape = strdup(source); 15621174Sguido if (magtape == NULL) { 15721174Sguido fprintf(stderr, "Cannot allocate space for magtape buffer\n"); 15821174Sguido done(1); 15921174Sguido } 1601558Srgrimes} 1611558Srgrimes 1621558Srgrimesvoid 16392837Simpnewtapebuf(long size) 1641558Srgrimes{ 16592837Simp static int tapebufsize = -1; 1661558Srgrimes 1671558Srgrimes ntrec = size; 1681558Srgrimes if (size <= tapebufsize) 1691558Srgrimes return; 1701558Srgrimes if (tapebuf != NULL) 1711558Srgrimes free(tapebuf); 1721558Srgrimes tapebuf = malloc(size * TP_BSIZE); 1731558Srgrimes if (tapebuf == NULL) { 1741558Srgrimes fprintf(stderr, "Cannot allocate space for tape buffer\n"); 1751558Srgrimes done(1); 1761558Srgrimes } 1771558Srgrimes tapebufsize = size; 1781558Srgrimes} 1791558Srgrimes 1801558Srgrimes/* 1811558Srgrimes * Verify that the tape drive can be accessed and 1821558Srgrimes * that it actually is a dump tape. 1831558Srgrimes */ 1841558Srgrimesvoid 18592837Simpsetup(void) 1861558Srgrimes{ 1871558Srgrimes int i, j, *ip; 1881558Srgrimes struct stat stbuf; 1891558Srgrimes 1901558Srgrimes vprintf(stdout, "Verify tape and initialize maps\n"); 1911558Srgrimes#ifdef RRESTORE 1921558Srgrimes if (host) 1931558Srgrimes mt = rmtopen(magtape, 0); 1941558Srgrimes else 1951558Srgrimes#endif 1961558Srgrimes if (pipein) 1971558Srgrimes mt = 0; 1981558Srgrimes else 1991558Srgrimes mt = open(magtape, O_RDONLY, 0); 2001558Srgrimes if (mt < 0) { 2011558Srgrimes fprintf(stderr, "%s: %s\n", magtape, strerror(errno)); 2021558Srgrimes done(1); 2031558Srgrimes } 2041558Srgrimes volno = 1; 2051558Srgrimes setdumpnum(); 2061558Srgrimes FLUSHTAPEBUF(); 2071558Srgrimes if (!pipein && !bflag) 2081558Srgrimes findtapeblksize(); 2091558Srgrimes if (gethead(&spcl) == FAIL) { 2101558Srgrimes blkcnt--; /* push back this block */ 2111558Srgrimes blksread--; 2121558Srgrimes cvtflag++; 2131558Srgrimes if (gethead(&spcl) == FAIL) { 2141558Srgrimes fprintf(stderr, "Tape is not a dump tape\n"); 2151558Srgrimes done(1); 2161558Srgrimes } 2171558Srgrimes fprintf(stderr, "Converting to new file system format.\n"); 2181558Srgrimes } 2191558Srgrimes if (pipein) { 2201558Srgrimes endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC; 2211558Srgrimes endoftapemark.s_spcl.c_type = TS_END; 2221558Srgrimes ip = (int *)&endoftapemark; 2231558Srgrimes j = sizeof(union u_spcl) / sizeof(int); 2241558Srgrimes i = 0; 2251558Srgrimes do 2261558Srgrimes i += *ip++; 2271558Srgrimes while (--j); 2281558Srgrimes endoftapemark.s_spcl.c_checksum = CHECKSUM - i; 2291558Srgrimes } 2301558Srgrimes if (vflag || command == 't') 2311558Srgrimes printdumpinfo(); 23289572Sdillon dumptime = _time32_to_time(spcl.c_ddate); 23389572Sdillon dumpdate = _time32_to_time(spcl.c_date); 2341558Srgrimes if (stat(".", &stbuf) < 0) { 2351558Srgrimes fprintf(stderr, "cannot stat .: %s\n", strerror(errno)); 2361558Srgrimes done(1); 2371558Srgrimes } 23834851Sjkh if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE ) 23934851Sjkh fssize = TP_BSIZE; 24034851Sjkh if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE) 2411558Srgrimes fssize = stbuf.st_blksize; 2421558Srgrimes if (((fssize - 1) & fssize) != 0) { 24337240Sbde fprintf(stderr, "bad block size %ld\n", fssize); 2441558Srgrimes done(1); 2451558Srgrimes } 2461558Srgrimes if (spcl.c_volume != 1) { 2471558Srgrimes fprintf(stderr, "Tape is not volume 1 of the dump\n"); 2481558Srgrimes done(1); 2491558Srgrimes } 2501558Srgrimes if (gethead(&spcl) == FAIL) { 25137240Sbde dprintf(stdout, "header read failed at %ld blocks\n", blksread); 2521558Srgrimes panic("no header after volume mark!\n"); 2531558Srgrimes } 2541558Srgrimes findinode(&spcl); 2551558Srgrimes if (spcl.c_type != TS_CLRI) { 2561558Srgrimes fprintf(stderr, "Cannot find file removal list\n"); 2571558Srgrimes done(1); 2581558Srgrimes } 2591558Srgrimes maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; 2601558Srgrimes dprintf(stdout, "maxino = %d\n", maxino); 2611558Srgrimes map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); 2621558Srgrimes if (map == NULL) 26323685Speter panic("no memory for active inode map\n"); 26423685Speter usedinomap = map; 2651558Srgrimes curfile.action = USING; 2661558Srgrimes getfile(xtrmap, xtrmapskip); 2671558Srgrimes if (spcl.c_type != TS_BITS) { 2681558Srgrimes fprintf(stderr, "Cannot find file dump list\n"); 2691558Srgrimes done(1); 2701558Srgrimes } 2711558Srgrimes map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); 2721558Srgrimes if (map == (char *)NULL) 2731558Srgrimes panic("no memory for file dump list\n"); 2741558Srgrimes dumpmap = map; 2751558Srgrimes curfile.action = USING; 2761558Srgrimes getfile(xtrmap, xtrmapskip); 27723685Speter /* 27823685Speter * If there may be whiteout entries on the tape, pretend that the 27923685Speter * whiteout inode exists, so that the whiteout entries can be 28023685Speter * extracted. 28123685Speter */ 28223685Speter if (oldinofmt == 0) 28323685Speter SETINO(WINO, dumpmap); 28490820Siedowse /* 'r' restores don't call getvol() for tape 1, so mark it as read. */ 28590820Siedowse if (command == 'r') 28690820Siedowse tapesread = 1; 2871558Srgrimes} 2881558Srgrimes 2891558Srgrimes/* 2901558Srgrimes * Prompt user to load a new dump volume. 2911558Srgrimes * "Nextvol" is the next suggested volume to use. 2921558Srgrimes * This suggested volume is enforced when doing full 29337906Scharnier * or incremental restores, but can be overridden by 2941558Srgrimes * the user when only extracting a subset of the files. 2951558Srgrimes */ 2961558Srgrimesvoid 29792837Simpgetvol(long nextvol) 2981558Srgrimes{ 29990827Siedowse long newvol, prevtapea, savecnt, i; 3001558Srgrimes union u_spcl tmpspcl; 3011558Srgrimes# define tmpbuf tmpspcl.s_spcl 3021558Srgrimes char buf[TP_BSIZE]; 3031558Srgrimes 3041558Srgrimes if (nextvol == 1) { 3051558Srgrimes tapesread = 0; 3061558Srgrimes gettingfile = 0; 3071558Srgrimes } 30890827Siedowse prevtapea = tapeaddr; 30990827Siedowse savecnt = blksread; 3101558Srgrimes if (pipein) { 31169906Siedowse if (nextvol != 1) { 3121558Srgrimes panic("Changing volumes on pipe input?\n"); 31369906Siedowse /* Avoid looping if we couldn't ask the user. */ 31469906Siedowse if (yflag || ferror(terminal) || feof(terminal)) 31569906Siedowse done(1); 31669906Siedowse } 3171558Srgrimes if (volno == 1) 3181558Srgrimes return; 3191558Srgrimes goto gethdr; 3201558Srgrimes } 3211558Srgrimesagain: 3221558Srgrimes if (pipein) 3231558Srgrimes done(1); /* pipes do not get a second chance */ 32490608Siedowse if (command == 'R' || command == 'r' || curfile.action != SKIP) 3251558Srgrimes newvol = nextvol; 32690608Siedowse else 3271558Srgrimes newvol = 0; 3281558Srgrimes while (newvol <= 0) { 3291558Srgrimes if (tapesread == 0) { 33090820Siedowse fprintf(stderr, "%s%s%s%s%s%s%s", 3311558Srgrimes "You have not read any tapes yet.\n", 33290820Siedowse "If you are extracting just a few files,", 33390820Siedowse " start with the last volume\n", 33490820Siedowse "and work towards the first; restore", 33590820Siedowse " can quickly skip tapes that\n", 33690820Siedowse "have no further files to extract.", 33790820Siedowse " Otherwise, begin with volume 1.\n"); 3381558Srgrimes } else { 3391558Srgrimes fprintf(stderr, "You have read volumes"); 3401558Srgrimes strcpy(buf, ": "); 34190820Siedowse for (i = 0; i < 32; i++) 3421558Srgrimes if (tapesread & (1 << i)) { 34390820Siedowse fprintf(stderr, "%s%ld", buf, i + 1); 3441558Srgrimes strcpy(buf, ", "); 3451558Srgrimes } 3461558Srgrimes fprintf(stderr, "\n"); 3471558Srgrimes } 3481558Srgrimes do { 3491558Srgrimes fprintf(stderr, "Specify next volume #: "); 3501558Srgrimes (void) fflush(stderr); 35169906Siedowse if (fgets(buf, BUFSIZ, terminal) == NULL) 35269906Siedowse done(1); 35369906Siedowse } while (buf[0] == '\n'); 3541558Srgrimes newvol = atoi(buf); 3551558Srgrimes if (newvol <= 0) { 3561558Srgrimes fprintf(stderr, 3571558Srgrimes "Volume numbers are positive numerics\n"); 3581558Srgrimes } 3591558Srgrimes } 3601558Srgrimes if (newvol == volno) { 36190820Siedowse tapesread |= 1 << (volno - 1); 3621558Srgrimes return; 3631558Srgrimes } 3641558Srgrimes closemt(); 36537240Sbde fprintf(stderr, "Mount tape volume %ld\n", newvol); 3661558Srgrimes fprintf(stderr, "Enter ``none'' if there are no more tapes\n"); 3671558Srgrimes fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape); 3681558Srgrimes (void) fflush(stderr); 36969906Siedowse if (fgets(buf, BUFSIZ, terminal) == NULL) 3701558Srgrimes done(1); 3711558Srgrimes if (!strcmp(buf, "none\n")) { 3721558Srgrimes terminateinput(); 3731558Srgrimes return; 3741558Srgrimes } 3751558Srgrimes if (buf[0] != '\n') { 3761558Srgrimes (void) strcpy(magtape, buf); 3771558Srgrimes magtape[strlen(magtape) - 1] = '\0'; 3781558Srgrimes } 3791558Srgrimes#ifdef RRESTORE 3801558Srgrimes if (host) 3811558Srgrimes mt = rmtopen(magtape, 0); 3821558Srgrimes else 3831558Srgrimes#endif 3841558Srgrimes mt = open(magtape, O_RDONLY, 0); 3851558Srgrimes 3861558Srgrimes if (mt == -1) { 3871558Srgrimes fprintf(stderr, "Cannot open %s\n", magtape); 3881558Srgrimes volno = -1; 3891558Srgrimes goto again; 3901558Srgrimes } 3911558Srgrimesgethdr: 3921558Srgrimes volno = newvol; 3931558Srgrimes setdumpnum(); 3941558Srgrimes FLUSHTAPEBUF(); 3951558Srgrimes if (gethead(&tmpbuf) == FAIL) { 39637240Sbde dprintf(stdout, "header read failed at %ld blocks\n", blksread); 3971558Srgrimes fprintf(stderr, "tape is not dump tape\n"); 3981558Srgrimes volno = 0; 3991558Srgrimes goto again; 4001558Srgrimes } 4011558Srgrimes if (tmpbuf.c_volume != volno) { 40237240Sbde fprintf(stderr, "Wrong volume (%ld)\n", tmpbuf.c_volume); 4031558Srgrimes volno = 0; 4041558Srgrimes goto again; 4051558Srgrimes } 40689572Sdillon if (_time32_to_time(tmpbuf.c_date) != dumpdate || 40789572Sdillon _time32_to_time(tmpbuf.c_ddate) != dumptime) { 40889572Sdillon time_t t = _time32_to_time(tmpbuf.c_date); 40985635Sdillon fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t)); 4101558Srgrimes fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); 4111558Srgrimes volno = 0; 4121558Srgrimes goto again; 4131558Srgrimes } 41490820Siedowse tapesread |= 1 << (volno - 1); 4151558Srgrimes blksread = savecnt; 4161558Srgrimes /* 4171558Srgrimes * If continuing from the previous volume, skip over any 4181558Srgrimes * blocks read already at the end of the previous volume. 4191558Srgrimes * 4201558Srgrimes * If coming to this volume at random, skip to the beginning 4211558Srgrimes * of the next record. 4221558Srgrimes */ 42390827Siedowse dprintf(stdout, "last rec %ld, tape starts with %ld\n", prevtapea, 42490827Siedowse tmpbuf.c_tapea); 4251558Srgrimes if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) { 42690608Siedowse if (curfile.action != USING) { 42790608Siedowse /* 42890608Siedowse * XXX Dump incorrectly sets c_count to 1 in the 42990608Siedowse * volume header of the first tape, so ignore 43090608Siedowse * c_count when volno == 1. 43190608Siedowse */ 43290608Siedowse if (volno != 1) 43390608Siedowse for (i = tmpbuf.c_count; i > 0; i--) 43490608Siedowse readtape(buf); 43590827Siedowse } else if (tmpbuf.c_tapea <= prevtapea) { 4361558Srgrimes /* 43790827Siedowse * Normally the value of c_tapea in the volume 43890827Siedowse * header is the record number of the header itself. 43990827Siedowse * However in the volume header following an EOT- 44090827Siedowse * terminated tape, it is the record number of the 44190827Siedowse * first continuation data block (dump bug?). 44290827Siedowse * 44390827Siedowse * The next record we want is `prevtapea + 1'. 4441558Srgrimes */ 44590827Siedowse i = prevtapea + 1 - tmpbuf.c_tapea; 44637240Sbde dprintf(stderr, "Skipping %ld duplicate record%s.\n", 4471558Srgrimes i, i > 1 ? "s" : ""); 4481558Srgrimes while (--i >= 0) 4491558Srgrimes readtape(buf); 4501558Srgrimes } 4511558Srgrimes } 45290608Siedowse if (curfile.action == USING) { 4531558Srgrimes if (volno == 1) 4541558Srgrimes panic("active file into volume 1\n"); 4551558Srgrimes return; 4561558Srgrimes } 4571558Srgrimes (void) gethead(&spcl); 4581558Srgrimes findinode(&spcl); 4591558Srgrimes if (gettingfile) { 4601558Srgrimes gettingfile = 0; 4611558Srgrimes longjmp(restart, 1); 4621558Srgrimes } 4631558Srgrimes} 4641558Srgrimes 4651558Srgrimes/* 4661558Srgrimes * Handle unexpected EOF. 4671558Srgrimes */ 4681558Srgrimesstatic void 46992837Simpterminateinput(void) 4701558Srgrimes{ 4711558Srgrimes 4721558Srgrimes if (gettingfile && curfile.action == USING) { 4731558Srgrimes printf("Warning: %s %s\n", 4741558Srgrimes "End-of-input encountered while extracting", curfile.name); 4751558Srgrimes } 4761558Srgrimes curfile.name = "<name unknown>"; 4771558Srgrimes curfile.action = UNKNOWN; 4781558Srgrimes curfile.dip = NULL; 4791558Srgrimes curfile.ino = maxino; 4801558Srgrimes if (gettingfile) { 4811558Srgrimes gettingfile = 0; 4821558Srgrimes longjmp(restart, 1); 4831558Srgrimes } 4841558Srgrimes} 4851558Srgrimes 4861558Srgrimes/* 4871558Srgrimes * handle multiple dumps per tape by skipping forward to the 4881558Srgrimes * appropriate one. 4891558Srgrimes */ 4901558Srgrimesstatic void 49192837Simpsetdumpnum(void) 4921558Srgrimes{ 4931558Srgrimes struct mtop tcom; 4941558Srgrimes 4951558Srgrimes if (dumpnum == 1 || volno != 1) 4961558Srgrimes return; 4971558Srgrimes if (pipein) { 4981558Srgrimes fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); 4991558Srgrimes done(1); 5001558Srgrimes } 5011558Srgrimes tcom.mt_op = MTFSF; 5021558Srgrimes tcom.mt_count = dumpnum - 1; 5031558Srgrimes#ifdef RRESTORE 5041558Srgrimes if (host) 5051558Srgrimes rmtioctl(MTFSF, dumpnum - 1); 5068871Srgrimes else 5071558Srgrimes#endif 50865786Smjacob if (ioctl(mt, MTIOCTOP, (char *)&tcom) < 0) 5091558Srgrimes fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno)); 5101558Srgrimes} 5111558Srgrimes 5121558Srgrimesvoid 51392837Simpprintdumpinfo(void) 5141558Srgrimes{ 51585635Sdillon time_t t; 51689572Sdillon t = _time32_to_time(spcl.c_date); 51785635Sdillon fprintf(stdout, "Dump date: %s", ctime(&t)); 51889572Sdillon t = _time32_to_time(spcl.c_ddate); 5191558Srgrimes fprintf(stdout, "Dumped from: %s", 52085635Sdillon (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t)); 5211558Srgrimes if (spcl.c_host[0] == '\0') 5221558Srgrimes return; 52337240Sbde fprintf(stderr, "Level %ld dump of %s on %s:%s\n", 5241558Srgrimes spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); 5251558Srgrimes fprintf(stderr, "Label: %s\n", spcl.c_label); 5261558Srgrimes} 5271558Srgrimes 5281558Srgrimesint 52992837Simpextractfile(char *name) 5301558Srgrimes{ 53123685Speter int flags; 53223685Speter mode_t mode; 5331558Srgrimes struct timeval timep[2]; 5341558Srgrimes struct entry *ep; 5351558Srgrimes 5361558Srgrimes curfile.name = name; 5371558Srgrimes curfile.action = USING; 53823685Speter timep[0].tv_sec = curfile.dip->di_atime; 53923685Speter timep[0].tv_usec = curfile.dip->di_atimensec / 1000; 54023685Speter timep[1].tv_sec = curfile.dip->di_mtime; 54123685Speter timep[1].tv_usec = curfile.dip->di_mtimensec / 1000; 5421558Srgrimes mode = curfile.dip->di_mode; 54323685Speter flags = curfile.dip->di_flags; 5441558Srgrimes switch (mode & IFMT) { 5451558Srgrimes 5461558Srgrimes default: 5471558Srgrimes fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); 5481558Srgrimes skipfile(); 5491558Srgrimes return (FAIL); 5501558Srgrimes 5511558Srgrimes case IFSOCK: 5521558Srgrimes vprintf(stdout, "skipped socket %s\n", name); 5531558Srgrimes skipfile(); 5541558Srgrimes return (GOOD); 5551558Srgrimes 5561558Srgrimes case IFDIR: 5571558Srgrimes if (mflag) { 5581558Srgrimes ep = lookupname(name); 5591558Srgrimes if (ep == NULL || ep->e_flags & EXTRACT) 5601558Srgrimes panic("unextracted directory %s\n", name); 5611558Srgrimes skipfile(); 5621558Srgrimes return (GOOD); 5631558Srgrimes } 5641558Srgrimes vprintf(stdout, "extract file %s\n", name); 5651558Srgrimes return (genliteraldir(name, curfile.ino)); 5661558Srgrimes 5671558Srgrimes case IFLNK: 5681558Srgrimes lnkbuf[0] = '\0'; 5691558Srgrimes pathlen = 0; 5701558Srgrimes getfile(xtrlnkfile, xtrlnkskip); 5711558Srgrimes if (pathlen == 0) { 5721558Srgrimes vprintf(stdout, 5731558Srgrimes "%s: zero length symbolic link (ignored)\n", name); 5741558Srgrimes return (GOOD); 5751558Srgrimes } 5761558Srgrimes return (linkit(lnkbuf, name, SYMLINK)); 5771558Srgrimes 5786305Smartin case IFIFO: 57923685Speter vprintf(stdout, "extract fifo %s\n", name); 58023685Speter if (Nflag) { 58123685Speter skipfile(); 58223685Speter return (GOOD); 58323685Speter } 58435852Sjkh if (uflag && !Nflag) 58535852Sjkh (void)unlink(name); 5866305Smartin if (mkfifo(name, mode) < 0) { 58723685Speter fprintf(stderr, "%s: cannot create fifo: %s\n", 58823685Speter name, strerror(errno)); 5896305Smartin skipfile(); 5906305Smartin return (FAIL); 5916305Smartin } 5926305Smartin (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); 5936305Smartin (void) chmod(name, mode); 59463283Sdwmalone utimes(name, timep); 59523685Speter (void) chflags(name, flags); 5966305Smartin skipfile(); 5976305Smartin return (GOOD); 5986305Smartin 5991558Srgrimes case IFCHR: 6001558Srgrimes case IFBLK: 6011558Srgrimes vprintf(stdout, "extract special file %s\n", name); 6021558Srgrimes if (Nflag) { 6031558Srgrimes skipfile(); 6041558Srgrimes return (GOOD); 6051558Srgrimes } 60635852Sjkh if (uflag) 60735852Sjkh (void)unlink(name); 6081558Srgrimes if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) { 6091558Srgrimes fprintf(stderr, "%s: cannot create special file: %s\n", 6101558Srgrimes name, strerror(errno)); 6111558Srgrimes skipfile(); 6121558Srgrimes return (FAIL); 6131558Srgrimes } 6141558Srgrimes (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid); 6151558Srgrimes (void) chmod(name, mode); 61663283Sdwmalone utimes(name, timep); 61723685Speter (void) chflags(name, flags); 6181558Srgrimes skipfile(); 6191558Srgrimes return (GOOD); 6201558Srgrimes 6211558Srgrimes case IFREG: 6221558Srgrimes vprintf(stdout, "extract file %s\n", name); 6231558Srgrimes if (Nflag) { 6241558Srgrimes skipfile(); 6251558Srgrimes return (GOOD); 6261558Srgrimes } 62735852Sjkh if (uflag) 62835852Sjkh (void)unlink(name); 62921149Simp if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 63021149Simp 0666)) < 0) { 6311558Srgrimes fprintf(stderr, "%s: cannot create file: %s\n", 6321558Srgrimes name, strerror(errno)); 6331558Srgrimes skipfile(); 6341558Srgrimes return (FAIL); 6351558Srgrimes } 6361558Srgrimes (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid); 6371558Srgrimes (void) fchmod(ofile, mode); 6381558Srgrimes getfile(xtrfile, xtrskip); 6391558Srgrimes (void) close(ofile); 6401558Srgrimes utimes(name, timep); 64163283Sdwmalone (void) chflags(name, flags); 6421558Srgrimes return (GOOD); 6431558Srgrimes } 6441558Srgrimes /* NOTREACHED */ 6451558Srgrimes} 6461558Srgrimes 6471558Srgrimes/* 6481558Srgrimes * skip over bit maps on the tape 6491558Srgrimes */ 6501558Srgrimesvoid 65192837Simpskipmaps(void) 6521558Srgrimes{ 6531558Srgrimes 6541558Srgrimes while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI) 6551558Srgrimes skipfile(); 6561558Srgrimes} 6571558Srgrimes 6581558Srgrimes/* 6591558Srgrimes * skip over a file on the tape 6601558Srgrimes */ 6611558Srgrimesvoid 66292837Simpskipfile(void) 6631558Srgrimes{ 6641558Srgrimes 6651558Srgrimes curfile.action = SKIP; 6661558Srgrimes getfile(xtrnull, xtrnull); 6671558Srgrimes} 6681558Srgrimes 6691558Srgrimes/* 6701558Srgrimes * Extract a file from the tape. 6711558Srgrimes * When an allocated block is found it is passed to the fill function; 6721558Srgrimes * when an unallocated block (hole) is found, a zeroed buffer is passed 6731558Srgrimes * to the skip function. 6741558Srgrimes */ 6751558Srgrimesvoid 67692837Simpgetfile(void (*fill)(char *, long), void (*skip)(char *, long)) 6771558Srgrimes{ 67892806Sobrien int i; 6791558Srgrimes int curblk = 0; 68023685Speter quad_t size = spcl.c_dinode.di_size; 6811558Srgrimes static char clearedbuf[MAXBSIZE]; 6821558Srgrimes char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; 6831558Srgrimes char junk[TP_BSIZE]; 6841558Srgrimes 6851558Srgrimes if (spcl.c_type == TS_END) 6861558Srgrimes panic("ran off end of tape\n"); 6871558Srgrimes if (spcl.c_magic != NFS_MAGIC) 6881558Srgrimes panic("not at beginning of a file\n"); 6891558Srgrimes if (!gettingfile && setjmp(restart) != 0) 6901558Srgrimes return; 6911558Srgrimes gettingfile++; 6921558Srgrimesloop: 6931558Srgrimes for (i = 0; i < spcl.c_count; i++) { 69437923Simp if (readmapflag || spcl.c_addr[i]) { 6951558Srgrimes readtape(&buf[curblk++][0]); 6961558Srgrimes if (curblk == fssize / TP_BSIZE) { 69723685Speter (*fill)((char *)buf, (long)(size > TP_BSIZE ? 69823685Speter fssize : (curblk - 1) * TP_BSIZE + size)); 6991558Srgrimes curblk = 0; 7001558Srgrimes } 7011558Srgrimes } else { 7021558Srgrimes if (curblk > 0) { 70323685Speter (*fill)((char *)buf, (long)(size > TP_BSIZE ? 70423685Speter curblk * TP_BSIZE : 70523685Speter (curblk - 1) * TP_BSIZE + size)); 7061558Srgrimes curblk = 0; 7071558Srgrimes } 70823685Speter (*skip)(clearedbuf, (long)(size > TP_BSIZE ? 70923685Speter TP_BSIZE : size)); 7101558Srgrimes } 7111558Srgrimes if ((size -= TP_BSIZE) <= 0) { 7121558Srgrimes for (i++; i < spcl.c_count; i++) 71337923Simp if (readmapflag || spcl.c_addr[i]) 7141558Srgrimes readtape(junk); 7151558Srgrimes break; 7161558Srgrimes } 7171558Srgrimes } 7181558Srgrimes if (gethead(&spcl) == GOOD && size > 0) { 7191558Srgrimes if (spcl.c_type == TS_ADDR) 7201558Srgrimes goto loop; 7211558Srgrimes dprintf(stdout, 72237240Sbde "Missing address (header) block for %s at %ld blocks\n", 7231558Srgrimes curfile.name, blksread); 7241558Srgrimes } 7251558Srgrimes if (curblk > 0) 72623685Speter (*fill)((char *)buf, (long)((curblk * TP_BSIZE) + size)); 7271558Srgrimes findinode(&spcl); 7281558Srgrimes gettingfile = 0; 7291558Srgrimes} 7301558Srgrimes 7311558Srgrimes/* 7321558Srgrimes * Write out the next block of a file. 7331558Srgrimes */ 7341558Srgrimesstatic void 73592837Simpxtrfile(char *buf, long size) 7361558Srgrimes{ 7371558Srgrimes 7381558Srgrimes if (Nflag) 7391558Srgrimes return; 7401558Srgrimes if (write(ofile, buf, (int) size) == -1) { 7411558Srgrimes fprintf(stderr, 7421558Srgrimes "write error extracting inode %d, name %s\nwrite: %s\n", 7431558Srgrimes curfile.ino, curfile.name, strerror(errno)); 7441558Srgrimes } 7451558Srgrimes} 7461558Srgrimes 7471558Srgrimes/* 7481558Srgrimes * Skip over a hole in a file. 7491558Srgrimes */ 7501558Srgrimes/* ARGSUSED */ 7511558Srgrimesstatic void 75292837Simpxtrskip(char *buf, long size) 7531558Srgrimes{ 7541558Srgrimes 7551558Srgrimes if (lseek(ofile, size, SEEK_CUR) == -1) { 7561558Srgrimes fprintf(stderr, 7571558Srgrimes "seek error extracting inode %d, name %s\nlseek: %s\n", 7581558Srgrimes curfile.ino, curfile.name, strerror(errno)); 7591558Srgrimes done(1); 7601558Srgrimes } 7611558Srgrimes} 7621558Srgrimes 7631558Srgrimes/* 7641558Srgrimes * Collect the next block of a symbolic link. 7651558Srgrimes */ 7661558Srgrimesstatic void 76792837Simpxtrlnkfile(char *buf, long size) 7681558Srgrimes{ 7691558Srgrimes 7701558Srgrimes pathlen += size; 7711558Srgrimes if (pathlen > MAXPATHLEN) { 7721558Srgrimes fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", 7731558Srgrimes curfile.name, lnkbuf, buf, pathlen); 7741558Srgrimes done(1); 7751558Srgrimes } 7761558Srgrimes (void) strcat(lnkbuf, buf); 7771558Srgrimes} 7781558Srgrimes 7791558Srgrimes/* 7801558Srgrimes * Skip over a hole in a symbolic link (should never happen). 7811558Srgrimes */ 7821558Srgrimes/* ARGSUSED */ 7831558Srgrimesstatic void 78492837Simpxtrlnkskip(char *buf, long size) 7851558Srgrimes{ 7861558Srgrimes 7871558Srgrimes fprintf(stderr, "unallocated block in symbolic link %s\n", 7881558Srgrimes curfile.name); 7891558Srgrimes done(1); 7901558Srgrimes} 7911558Srgrimes 7921558Srgrimes/* 7931558Srgrimes * Collect the next block of a bit map. 7941558Srgrimes */ 7951558Srgrimesstatic void 79692837Simpxtrmap(char *buf, long size) 7971558Srgrimes{ 7981558Srgrimes 79923685Speter memmove(map, buf, size); 8001558Srgrimes map += size; 8011558Srgrimes} 8021558Srgrimes 8031558Srgrimes/* 8041558Srgrimes * Skip over a hole in a bit map (should never happen). 8051558Srgrimes */ 8061558Srgrimes/* ARGSUSED */ 8071558Srgrimesstatic void 80892837Simpxtrmapskip(char *buf, long size) 8091558Srgrimes{ 8101558Srgrimes 8111558Srgrimes panic("hole in map\n"); 8121558Srgrimes map += size; 8131558Srgrimes} 8141558Srgrimes 8151558Srgrimes/* 8161558Srgrimes * Noop, when an extraction function is not needed. 8171558Srgrimes */ 8181558Srgrimes/* ARGSUSED */ 8191558Srgrimesvoid 82092837Simpxtrnull(char *buf, long size) 8211558Srgrimes{ 8221558Srgrimes 8231558Srgrimes return; 8241558Srgrimes} 8251558Srgrimes 8261558Srgrimes/* 8271558Srgrimes * Read TP_BSIZE blocks from the input. 8281558Srgrimes * Handle read errors, and end of media. 8291558Srgrimes */ 8301558Srgrimesstatic void 83192837Simpreadtape(char *buf) 8321558Srgrimes{ 8331558Srgrimes long rd, newvol, i; 8341558Srgrimes int cnt, seek_failed; 8351558Srgrimes 8361558Srgrimes if (blkcnt < numtrec) { 83723685Speter memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE); 8381558Srgrimes blksread++; 83990827Siedowse tapeaddr++; 8401558Srgrimes return; 8411558Srgrimes } 8421558Srgrimes for (i = 0; i < ntrec; i++) 8431558Srgrimes ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 8441558Srgrimes if (numtrec == 0) 8451558Srgrimes numtrec = ntrec; 8461558Srgrimes cnt = ntrec * TP_BSIZE; 8471558Srgrimes rd = 0; 8481558Srgrimesgetmore: 8491558Srgrimes#ifdef RRESTORE 8501558Srgrimes if (host) 8511558Srgrimes i = rmtread(&tapebuf[rd], cnt); 8521558Srgrimes else 8531558Srgrimes#endif 8541558Srgrimes i = read(mt, &tapebuf[rd], cnt); 8551558Srgrimes /* 8561558Srgrimes * Check for mid-tape short read error. 8571558Srgrimes * If found, skip rest of buffer and start with the next. 8581558Srgrimes */ 8591558Srgrimes if (!pipein && numtrec < ntrec && i > 0) { 8601558Srgrimes dprintf(stdout, "mid-media short read error.\n"); 8611558Srgrimes numtrec = ntrec; 8621558Srgrimes } 8631558Srgrimes /* 8641558Srgrimes * Handle partial block read. 8651558Srgrimes */ 8661558Srgrimes if (pipein && i == 0 && rd > 0) 8671558Srgrimes i = rd; 8681558Srgrimes else if (i > 0 && i != ntrec * TP_BSIZE) { 8691558Srgrimes if (pipein) { 8701558Srgrimes rd += i; 8711558Srgrimes cnt -= i; 8721558Srgrimes if (cnt > 0) 8731558Srgrimes goto getmore; 8741558Srgrimes i = rd; 8751558Srgrimes } else { 8761558Srgrimes /* 8771558Srgrimes * Short read. Process the blocks read. 8781558Srgrimes */ 8791558Srgrimes if (i % TP_BSIZE != 0) 8801558Srgrimes vprintf(stdout, 88137240Sbde "partial block read: %ld should be %ld\n", 8821558Srgrimes i, ntrec * TP_BSIZE); 8831558Srgrimes numtrec = i / TP_BSIZE; 8841558Srgrimes } 8851558Srgrimes } 8861558Srgrimes /* 8871558Srgrimes * Handle read error. 8881558Srgrimes */ 8891558Srgrimes if (i < 0) { 8901558Srgrimes fprintf(stderr, "Tape read error while "); 8911558Srgrimes switch (curfile.action) { 8921558Srgrimes default: 8931558Srgrimes fprintf(stderr, "trying to set up tape\n"); 8941558Srgrimes break; 8951558Srgrimes case UNKNOWN: 8961558Srgrimes fprintf(stderr, "trying to resynchronize\n"); 8971558Srgrimes break; 8981558Srgrimes case USING: 8991558Srgrimes fprintf(stderr, "restoring %s\n", curfile.name); 9001558Srgrimes break; 9011558Srgrimes case SKIP: 9021558Srgrimes fprintf(stderr, "skipping over inode %d\n", 9031558Srgrimes curfile.ino); 9041558Srgrimes break; 9051558Srgrimes } 9061558Srgrimes if (!yflag && !reply("continue")) 9071558Srgrimes done(1); 9081558Srgrimes i = ntrec * TP_BSIZE; 90923685Speter memset(tapebuf, 0, i); 9101558Srgrimes#ifdef RRESTORE 9111558Srgrimes if (host) 9121558Srgrimes seek_failed = (rmtseek(i, 1) < 0); 9131558Srgrimes else 9141558Srgrimes#endif 9151558Srgrimes seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1); 9161558Srgrimes 9171558Srgrimes if (seek_failed) { 9181558Srgrimes fprintf(stderr, 9191558Srgrimes "continuation failed: %s\n", strerror(errno)); 9201558Srgrimes done(1); 9211558Srgrimes } 9221558Srgrimes } 9231558Srgrimes /* 9241558Srgrimes * Handle end of tape. 9251558Srgrimes */ 9261558Srgrimes if (i == 0) { 9271558Srgrimes vprintf(stdout, "End-of-tape encountered\n"); 9281558Srgrimes if (!pipein) { 9291558Srgrimes newvol = volno + 1; 9301558Srgrimes volno = 0; 9311558Srgrimes numtrec = 0; 9321558Srgrimes getvol(newvol); 9331558Srgrimes readtape(buf); 9341558Srgrimes return; 9351558Srgrimes } 9361558Srgrimes if (rd % TP_BSIZE != 0) 9371558Srgrimes panic("partial block read: %d should be %d\n", 9381558Srgrimes rd, ntrec * TP_BSIZE); 9391558Srgrimes terminateinput(); 94023685Speter memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE); 9411558Srgrimes } 9421558Srgrimes blkcnt = 0; 94323685Speter memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE); 9441558Srgrimes blksread++; 94590827Siedowse tapeaddr++; 9461558Srgrimes} 9471558Srgrimes 9481558Srgrimesstatic void 94992837Simpfindtapeblksize(void) 9501558Srgrimes{ 95192806Sobrien long i; 9521558Srgrimes 9531558Srgrimes for (i = 0; i < ntrec; i++) 9541558Srgrimes ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 9551558Srgrimes blkcnt = 0; 9561558Srgrimes#ifdef RRESTORE 9571558Srgrimes if (host) 9581558Srgrimes i = rmtread(tapebuf, ntrec * TP_BSIZE); 9591558Srgrimes else 9601558Srgrimes#endif 9611558Srgrimes i = read(mt, tapebuf, ntrec * TP_BSIZE); 9621558Srgrimes 9631558Srgrimes if (i <= 0) { 9641558Srgrimes fprintf(stderr, "tape read error: %s\n", strerror(errno)); 9651558Srgrimes done(1); 9661558Srgrimes } 9671558Srgrimes if (i % TP_BSIZE != 0) { 96837240Sbde fprintf(stderr, "Tape block size (%ld) %s (%d)\n", 9691558Srgrimes i, "is not a multiple of dump block size", TP_BSIZE); 9701558Srgrimes done(1); 9711558Srgrimes } 9721558Srgrimes ntrec = i / TP_BSIZE; 9731558Srgrimes numtrec = ntrec; 97437240Sbde vprintf(stdout, "Tape block size is %ld\n", ntrec); 9751558Srgrimes} 9761558Srgrimes 9771558Srgrimesvoid 97892837Simpclosemt(void) 9791558Srgrimes{ 9801558Srgrimes 9811558Srgrimes if (mt < 0) 9821558Srgrimes return; 9831558Srgrimes#ifdef RRESTORE 9841558Srgrimes if (host) 9851558Srgrimes rmtclose(); 9861558Srgrimes else 9871558Srgrimes#endif 9881558Srgrimes (void) close(mt); 9891558Srgrimes} 9901558Srgrimes 9911558Srgrimes/* 9921558Srgrimes * Read the next block from the tape. 9931558Srgrimes * Check to see if it is one of several vintage headers. 9941558Srgrimes * If it is an old style header, convert it to a new style header. 9951558Srgrimes * If it is not any valid header, return an error. 9961558Srgrimes */ 9971558Srgrimesstatic int 99892837Simpgethead(struct s_spcl *buf) 9991558Srgrimes{ 10001558Srgrimes long i; 10011558Srgrimes union { 10021558Srgrimes quad_t qval; 100340668Sdima int32_t val[2]; 10041558Srgrimes } qcvt; 10051558Srgrimes union u_ospcl { 10061558Srgrimes char dummy[TP_BSIZE]; 10071558Srgrimes struct s_ospcl { 100840668Sdima int32_t c_type; 100940668Sdima int32_t c_date; 101040668Sdima int32_t c_ddate; 101140668Sdima int32_t c_volume; 101240668Sdima int32_t c_tapea; 10131558Srgrimes u_short c_inumber; 101440668Sdima int32_t c_magic; 101540668Sdima int32_t c_checksum; 10161558Srgrimes struct odinode { 10171558Srgrimes unsigned short odi_mode; 10181558Srgrimes u_short odi_nlink; 10191558Srgrimes u_short odi_uid; 10201558Srgrimes u_short odi_gid; 102140668Sdima int32_t odi_size; 102240668Sdima int32_t odi_rdev; 10231558Srgrimes char odi_addr[36]; 102440668Sdima int32_t odi_atime; 102540668Sdima int32_t odi_mtime; 102640668Sdima int32_t odi_ctime; 10271558Srgrimes } c_dinode; 102840668Sdima int32_t c_count; 10291558Srgrimes char c_addr[256]; 10301558Srgrimes } s_ospcl; 10311558Srgrimes } u_ospcl; 10321558Srgrimes 10331558Srgrimes if (!cvtflag) { 10341558Srgrimes readtape((char *)buf); 10351558Srgrimes if (buf->c_magic != NFS_MAGIC) { 10361558Srgrimes if (swabl(buf->c_magic) != NFS_MAGIC) 10371558Srgrimes return (FAIL); 10381558Srgrimes if (!Bcvt) { 10391558Srgrimes vprintf(stdout, "Note: Doing Byte swapping\n"); 10401558Srgrimes Bcvt = 1; 10411558Srgrimes } 10421558Srgrimes } 10431558Srgrimes if (checksum((int *)buf) == FAIL) 10441558Srgrimes return (FAIL); 104523096Simp if (Bcvt) { 10461558Srgrimes swabst((u_char *)"8l4s31l", (u_char *)buf); 104723096Simp swabst((u_char *)"l",(u_char *) &buf->c_level); 104823096Simp swabst((u_char *)"2l",(u_char *) &buf->c_flags); 104923096Simp } 10501558Srgrimes goto good; 10511558Srgrimes } 10521558Srgrimes readtape((char *)(&u_ospcl.s_ospcl)); 105323685Speter memset(buf, 0, (long)TP_BSIZE); 10541558Srgrimes buf->c_type = u_ospcl.s_ospcl.c_type; 10551558Srgrimes buf->c_date = u_ospcl.s_ospcl.c_date; 10561558Srgrimes buf->c_ddate = u_ospcl.s_ospcl.c_ddate; 10571558Srgrimes buf->c_volume = u_ospcl.s_ospcl.c_volume; 10581558Srgrimes buf->c_tapea = u_ospcl.s_ospcl.c_tapea; 10591558Srgrimes buf->c_inumber = u_ospcl.s_ospcl.c_inumber; 10601558Srgrimes buf->c_checksum = u_ospcl.s_ospcl.c_checksum; 10611558Srgrimes buf->c_magic = u_ospcl.s_ospcl.c_magic; 10621558Srgrimes buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; 10631558Srgrimes buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; 10641558Srgrimes buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; 10651558Srgrimes buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; 10661558Srgrimes buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; 10671558Srgrimes buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; 106823685Speter buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; 106923685Speter buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; 107023685Speter buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; 10711558Srgrimes buf->c_count = u_ospcl.s_ospcl.c_count; 107223685Speter memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256); 10731558Srgrimes if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || 10741558Srgrimes checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) 10751558Srgrimes return(FAIL); 10761558Srgrimes buf->c_magic = NFS_MAGIC; 10771558Srgrimes 10781558Srgrimesgood: 10791558Srgrimes if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) && 10801558Srgrimes (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) { 10811558Srgrimes qcvt.qval = buf->c_dinode.di_size; 10821558Srgrimes if (qcvt.val[0] || qcvt.val[1]) { 10831558Srgrimes printf("Note: Doing Quad swapping\n"); 10841558Srgrimes Qcvt = 1; 10851558Srgrimes } 10861558Srgrimes } 10871558Srgrimes if (Qcvt) { 10881558Srgrimes qcvt.qval = buf->c_dinode.di_size; 10891558Srgrimes i = qcvt.val[1]; 10901558Srgrimes qcvt.val[1] = qcvt.val[0]; 10911558Srgrimes qcvt.val[0] = i; 10921558Srgrimes buf->c_dinode.di_size = qcvt.qval; 10931558Srgrimes } 109437923Simp readmapflag = 0; 10951558Srgrimes 10961558Srgrimes switch (buf->c_type) { 10971558Srgrimes 10981558Srgrimes case TS_CLRI: 10991558Srgrimes case TS_BITS: 11001558Srgrimes /* 11011558Srgrimes * Have to patch up missing information in bit map headers 11021558Srgrimes */ 11031558Srgrimes buf->c_inumber = 0; 11041558Srgrimes buf->c_dinode.di_size = buf->c_count * TP_BSIZE; 110537923Simp if (buf->c_count > TP_NINDIR) 110637923Simp readmapflag = 1; 110737923Simp else 110837923Simp for (i = 0; i < buf->c_count; i++) 110937923Simp buf->c_addr[i]++; 11101558Srgrimes break; 11111558Srgrimes 11121558Srgrimes case TS_TAPE: 11131558Srgrimes if ((buf->c_flags & DR_NEWINODEFMT) == 0) 11141558Srgrimes oldinofmt = 1; 11151558Srgrimes /* fall through */ 11161558Srgrimes case TS_END: 11171558Srgrimes buf->c_inumber = 0; 11181558Srgrimes break; 11191558Srgrimes 11201558Srgrimes case TS_INODE: 11211558Srgrimes case TS_ADDR: 11221558Srgrimes break; 11231558Srgrimes 11241558Srgrimes default: 11251558Srgrimes panic("gethead: unknown inode type %d\n", buf->c_type); 11261558Srgrimes break; 11271558Srgrimes } 11281558Srgrimes /* 11298871Srgrimes * If we are restoring a filesystem with old format inodes, 11301558Srgrimes * copy the uid/gid to the new location. 11311558Srgrimes */ 11321558Srgrimes if (oldinofmt) { 11331558Srgrimes buf->c_dinode.di_uid = buf->c_dinode.di_ouid; 11341558Srgrimes buf->c_dinode.di_gid = buf->c_dinode.di_ogid; 11351558Srgrimes } 113690827Siedowse tapeaddr = buf->c_tapea; 11371558Srgrimes if (dflag) 11381558Srgrimes accthdr(buf); 11391558Srgrimes return(GOOD); 11401558Srgrimes} 11411558Srgrimes 11421558Srgrimes/* 11431558Srgrimes * Check that a header is where it belongs and predict the next header 11441558Srgrimes */ 11451558Srgrimesstatic void 114692837Simpaccthdr(struct s_spcl *header) 11471558Srgrimes{ 11481558Srgrimes static ino_t previno = 0x7fffffff; 11491558Srgrimes static int prevtype; 11501558Srgrimes static long predict; 11511558Srgrimes long blks, i; 11521558Srgrimes 11531558Srgrimes if (header->c_type == TS_TAPE) { 11541558Srgrimes fprintf(stderr, "Volume header (%s inode format) ", 11551558Srgrimes oldinofmt ? "old" : "new"); 11561558Srgrimes if (header->c_firstrec) 115737240Sbde fprintf(stderr, "begins with record %ld", 11581558Srgrimes header->c_firstrec); 11591558Srgrimes fprintf(stderr, "\n"); 11601558Srgrimes previno = 0x7fffffff; 11611558Srgrimes return; 11621558Srgrimes } 11631558Srgrimes if (previno == 0x7fffffff) 11641558Srgrimes goto newcalc; 11651558Srgrimes switch (prevtype) { 11661558Srgrimes case TS_BITS: 116723685Speter fprintf(stderr, "Dumped inodes map header"); 11681558Srgrimes break; 11691558Srgrimes case TS_CLRI: 117023685Speter fprintf(stderr, "Used inodes map header"); 11711558Srgrimes break; 11721558Srgrimes case TS_INODE: 11731558Srgrimes fprintf(stderr, "File header, ino %d", previno); 11741558Srgrimes break; 11751558Srgrimes case TS_ADDR: 11761558Srgrimes fprintf(stderr, "File continuation header, ino %d", previno); 11771558Srgrimes break; 11781558Srgrimes case TS_END: 11791558Srgrimes fprintf(stderr, "End of tape header"); 11801558Srgrimes break; 11811558Srgrimes } 11821558Srgrimes if (predict != blksread - 1) 118337240Sbde fprintf(stderr, "; predicted %ld blocks, got %ld blocks", 11841558Srgrimes predict, blksread - 1); 11851558Srgrimes fprintf(stderr, "\n"); 11861558Srgrimesnewcalc: 11871558Srgrimes blks = 0; 11881558Srgrimes if (header->c_type != TS_END) 11891558Srgrimes for (i = 0; i < header->c_count; i++) 119037923Simp if (readmapflag || header->c_addr[i] != 0) 11911558Srgrimes blks++; 11921558Srgrimes predict = blks; 11931558Srgrimes blksread = 0; 11941558Srgrimes prevtype = header->c_type; 11951558Srgrimes previno = header->c_inumber; 11961558Srgrimes} 11971558Srgrimes 11981558Srgrimes/* 11991558Srgrimes * Find an inode header. 120090573Siedowse * Complain if had to skip. 12011558Srgrimes */ 12021558Srgrimesstatic void 120392837Simpfindinode(struct s_spcl *header) 12041558Srgrimes{ 12051558Srgrimes static long skipcnt = 0; 12061558Srgrimes long i; 12071558Srgrimes char buf[TP_BSIZE]; 120890608Siedowse int htype; 12091558Srgrimes 12101558Srgrimes curfile.name = "<name unknown>"; 12111558Srgrimes curfile.action = UNKNOWN; 12121558Srgrimes curfile.dip = NULL; 12131558Srgrimes curfile.ino = 0; 12141558Srgrimes do { 12151558Srgrimes if (header->c_magic != NFS_MAGIC) { 12161558Srgrimes skipcnt++; 12171558Srgrimes while (gethead(header) == FAIL || 121889572Sdillon _time32_to_time(header->c_date) != dumpdate) 12191558Srgrimes skipcnt++; 12201558Srgrimes } 122190608Siedowse htype = header->c_type; 122290608Siedowse switch (htype) { 12231558Srgrimes 12241558Srgrimes case TS_ADDR: 12251558Srgrimes /* 12261558Srgrimes * Skip up to the beginning of the next record 12271558Srgrimes */ 12281558Srgrimes for (i = 0; i < header->c_count; i++) 12291558Srgrimes if (header->c_addr[i]) 12301558Srgrimes readtape(buf); 12311558Srgrimes while (gethead(header) == FAIL || 123289572Sdillon _time32_to_time(header->c_date) != dumpdate) 12331558Srgrimes skipcnt++; 12341558Srgrimes break; 12351558Srgrimes 12361558Srgrimes case TS_INODE: 12371558Srgrimes curfile.dip = &header->c_dinode; 12381558Srgrimes curfile.ino = header->c_inumber; 12391558Srgrimes break; 12401558Srgrimes 12411558Srgrimes case TS_END: 124290820Siedowse /* If we missed some tapes, get another volume. */ 124390820Siedowse if (tapesread & (tapesread + 1)) { 124490820Siedowse getvol(0); 124590820Siedowse continue; 124690820Siedowse } 12471558Srgrimes curfile.ino = maxino; 12481558Srgrimes break; 12491558Srgrimes 12501558Srgrimes case TS_CLRI: 12511558Srgrimes curfile.name = "<file removal list>"; 12521558Srgrimes break; 12531558Srgrimes 12541558Srgrimes case TS_BITS: 12551558Srgrimes curfile.name = "<file dump list>"; 12561558Srgrimes break; 12571558Srgrimes 12581558Srgrimes case TS_TAPE: 12591558Srgrimes panic("unexpected tape header\n"); 12601558Srgrimes /* NOTREACHED */ 12611558Srgrimes 12621558Srgrimes default: 12631558Srgrimes panic("unknown tape header type %d\n", spcl.c_type); 12641558Srgrimes /* NOTREACHED */ 12651558Srgrimes 12661558Srgrimes } 126790608Siedowse } while (htype == TS_ADDR); 12681558Srgrimes if (skipcnt > 0) 126937240Sbde fprintf(stderr, "resync restore, skipped %ld blocks\n", 127037240Sbde skipcnt); 12711558Srgrimes skipcnt = 0; 12721558Srgrimes} 12731558Srgrimes 12741558Srgrimesstatic int 127592837Simpchecksum(int *buf) 12761558Srgrimes{ 127792806Sobrien int i, j; 12781558Srgrimes 12791558Srgrimes j = sizeof(union u_spcl) / sizeof(int); 12801558Srgrimes i = 0; 12811558Srgrimes if(!Bcvt) { 12821558Srgrimes do 12831558Srgrimes i += *buf++; 12841558Srgrimes while (--j); 12851558Srgrimes } else { 12861558Srgrimes /* What happens if we want to read restore tapes 12871558Srgrimes for a 16bit int machine??? */ 12888871Srgrimes do 12891558Srgrimes i += swabl(*buf++); 12901558Srgrimes while (--j); 12911558Srgrimes } 12928871Srgrimes 12931558Srgrimes if (i != CHECKSUM) { 12941558Srgrimes fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, 12951558Srgrimes curfile.ino, curfile.name); 12961558Srgrimes return(FAIL); 12971558Srgrimes } 12981558Srgrimes return(GOOD); 12991558Srgrimes} 13001558Srgrimes 13011558Srgrimes#ifdef RRESTORE 13021558Srgrimes#include <stdarg.h> 13031558Srgrimes 13041558Srgrimesvoid 13051558Srgrimesmsg(const char *fmt, ...) 13061558Srgrimes{ 13071558Srgrimes va_list ap; 13081558Srgrimes va_start(ap, fmt); 13091558Srgrimes (void)vfprintf(stderr, fmt, ap); 13101558Srgrimes va_end(ap); 13111558Srgrimes} 13121558Srgrimes#endif /* RRESTORE */ 13131558Srgrimes 13141558Srgrimesstatic u_char * 131592837Simpswabshort(u_char *sp, int n) 13161558Srgrimes{ 13171558Srgrimes char c; 13181558Srgrimes 13191558Srgrimes while (--n >= 0) { 13201558Srgrimes c = sp[0]; sp[0] = sp[1]; sp[1] = c; 13211558Srgrimes sp += 2; 13221558Srgrimes } 13231558Srgrimes return (sp); 13241558Srgrimes} 13251558Srgrimes 13261558Srgrimesstatic u_char * 132792837Simpswablong(u_char *sp, int n) 13281558Srgrimes{ 13291558Srgrimes char c; 13301558Srgrimes 13311558Srgrimes while (--n >= 0) { 13321558Srgrimes c = sp[0]; sp[0] = sp[3]; sp[3] = c; 13331558Srgrimes c = sp[2]; sp[2] = sp[1]; sp[1] = c; 13341558Srgrimes sp += 4; 13351558Srgrimes } 13361558Srgrimes return (sp); 13371558Srgrimes} 13381558Srgrimes 13391558Srgrimesvoid 134092837Simpswabst(u_char *cp, u_char *sp) 13411558Srgrimes{ 13421558Srgrimes int n = 0; 13431558Srgrimes 13441558Srgrimes while (*cp) { 13451558Srgrimes switch (*cp) { 13461558Srgrimes case '0': case '1': case '2': case '3': case '4': 13471558Srgrimes case '5': case '6': case '7': case '8': case '9': 13481558Srgrimes n = (n * 10) + (*cp++ - '0'); 13491558Srgrimes continue; 13508871Srgrimes 13511558Srgrimes case 's': case 'w': case 'h': 13521558Srgrimes if (n == 0) 13531558Srgrimes n = 1; 13541558Srgrimes sp = swabshort(sp, n); 13551558Srgrimes break; 13561558Srgrimes 13571558Srgrimes case 'l': 13581558Srgrimes if (n == 0) 13591558Srgrimes n = 1; 13601558Srgrimes sp = swablong(sp, n); 13611558Srgrimes break; 13621558Srgrimes 13631558Srgrimes default: /* Any other character, like 'b' counts as byte. */ 13641558Srgrimes if (n == 0) 13651558Srgrimes n = 1; 13661558Srgrimes sp += n; 13671558Srgrimes break; 13681558Srgrimes } 13691558Srgrimes cp++; 13701558Srgrimes n = 0; 13711558Srgrimes } 13721558Srgrimes} 13731558Srgrimes 13741558Srgrimesstatic u_long 137592837Simpswabl(u_long x) 13761558Srgrimes{ 13771558Srgrimes swabst((u_char *)"l", (u_char *)&x); 13781558Srgrimes return (x); 13791558Srgrimes} 1380