/*
* Ported to Linux's Second Extended File System as part of the
* dump and restore backup suit
- * Remy Card <card@Linux.EU.Org>, 1994, 1995, 1996
- *
+ * Remy Card <card@Linux.EU.Org>, 1994-1997
+ * Stelian Pop <stelian@popies.net>, 1999-2000
+ * Stelian Pop <stelian@popies.net> - AlcĂ´ve <www.alcove.com>, 2000-2002
*/
/*
*/
#ifndef lint
-static char sccsid[] = "@(#)tape.c 8.9 (Berkeley) 5/1/95";
+static const char rcsid[] =
+ "$Id: tape.c,v 1.57 2002/01/31 10:25:55 stelian Exp $";
#endif /* not lint */
+#include <config.h>
+#include <compatlfs.h>
+#include <errno.h>
+#include <compaterr.h>
+#include <system.h>
+#include <setjmp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
#include <sys/param.h>
#include <sys/file.h>
-#include <sys/ioctl.h>
#include <sys/mtio.h>
#include <sys/stat.h>
#ifdef __linux__
#include <sys/time.h>
+#include <time.h>
+#ifdef HAVE_EXT2FS_EXT2_FS_H
+#include <ext2fs/ext2_fs.h>
+#else
#include <linux/ext2_fs.h>
+#endif
+#include <ext2fs/ext2fs.h>
#include <bsdcompat.h>
#else /* __linux__ */
#include <ufs/ufs/dinode.h>
#endif /* __linux__ */
#include <protocols/dumprestore.h>
-#include <errno.h>
-#include <setjmp.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+#endif /* HAVE_ZLIB */
-#ifdef __linux__
-#include <ext2fs/ext2fs.h>
-#endif
+#ifdef HAVE_BZLIB
+#include <bzlib.h>
+#endif /* HAVE_BZLIB */
#include "restore.h"
#include "extern.h"
#include "pathnames.h"
+#ifdef USE_QFA
+int noresyncmesg = 0;
+#endif /* USE_QFA */
static long fssize = MAXBSIZE;
static int mt = -1;
-static int pipein = 0;
-static char magtape[BUFSIZ];
+int pipein = 0;
+static int magtapein = 0; /* input is from magtape */
+static char magtape[MAXPATHLEN];
+static char magtapeprefix[MAXPATHLEN];
static int blkcnt;
static int numtrec;
-static char *tapebuf;
+static char *tapebuf; /* input buffer for read */
+static int bufsize; /* buffer size without prefix */
+static char *tbufptr = NULL; /* active tape buffer */
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+static char *comprbuf; /* uncompress work buf */
+static size_t comprlen; /* size including prefix */
+#endif
static union u_spcl endoftapemark;
static long blksread; /* blocks read since last header */
static long tpblksread = 0; /* TP_BSIZE blocks read */
static long tapesread;
-static jmp_buf restart;
+static sigjmp_buf restart;
static int gettingfile = 0; /* restart has a valid frame */
-static char *host = NULL;
+char *host = NULL;
static int ofile;
static char *map;
static int gethead __P((struct s_spcl *));
static void readtape __P((char *));
static void setdumpnum __P((void));
+static u_int swabi __P((u_int));
+#if 0
static u_long swabl __P((u_long));
-static u_char *swablong __P((u_char *, int));
-static u_char *swabshort __P((u_char *, int));
+#endif
+static u_char *swab64 __P((u_char *, int));
+static u_char *swab32 __P((u_char *, int));
+static u_char *swab16 __P((u_char *, int));
static void terminateinput __P((void));
-static void xtrfile __P((char *, long));
-static void xtrlnkfile __P((char *, long));
-static void xtrlnkskip __P((char *, long));
-static void xtrmap __P((char *, long));
-static void xtrmapskip __P((char *, long));
-static void xtrskip __P((char *, long));
+static void xtrfile __P((char *, size_t));
+static void xtrlnkfile __P((char *, size_t));
+static void xtrlnkskip __P((char *, size_t));
+static void xtrmap __P((char *, size_t));
+static void xtrmapskip __P((char *, size_t));
+static void xtrskip __P((char *, size_t));
+static void setmagtapein __P((void));
+
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+static void newcomprbuf __P((int));
+static void (*readtape_func) __P((char *));
+static void readtape_set __P((char *));
+static void readtape_uncompr __P((char *));
+static void readtape_comprfile __P((char *));
+static void readtape_comprtape __P((char *));
+static char *decompress_tapebuf __P((struct tapebuf *, int));
+static void msg_read_error __P((char *));
+#endif
+static int read_a_block __P((int, char *, size_t, long *));
+#define PREFIXSIZE sizeof(struct tapebuf)
+
+#define COMPARE_ONTHEFLY 1
+
+#if COMPARE_ONTHEFLY
+static int ifile; /* input file for compare */
+static int cmperror; /* compare error */
+static void xtrcmpfile __P((char *, size_t));
+static void xtrcmpskip __P((char *, size_t));
+#endif
+
+static int readmapflag;
/*
- * Set up an input source
+ * Set up an input source. This is called from main.c before setup() is.
*/
void
-setinput(source)
- char *source;
+setinput(char *source)
{
FLUSHTAPEBUF();
if (bflag)
source = strchr(host, ':');
*source++ = '\0';
if (rmthost(host) == 0)
- done(1);
+ exit(1);
} else
#endif
if (strcmp(source, "-") == 0) {
*/
terminal = fopen(_PATH_TTY, "r");
if (terminal == NULL) {
- (void)fprintf(stderr, "cannot open %s: %s\n",
- _PATH_TTY, strerror(errno));
+ warn("cannot open %s", _PATH_TTY);
terminal = fopen(_PATH_DEVNULL, "r");
- if (terminal == NULL) {
- (void)fprintf(stderr, "cannot open %s: %s\n",
- _PATH_DEVNULL, strerror(errno));
- done(1);
- }
+ if (terminal == NULL)
+ err(1, "cannot open %s", _PATH_DEVNULL);
}
pipein++;
}
setuid(getuid()); /* no longer need or want root privileges */
- (void) strcpy(magtape, source);
+ if (Mflag) {
+ strncpy(magtapeprefix, source, MAXPATHLEN);
+ magtapeprefix[MAXPATHLEN-1] = '\0';
+ snprintf(magtape, MAXPATHLEN, "%s%03d", source, 1);
+ }
+ else
+ strncpy(magtape, source, MAXPATHLEN);
+ magtape[MAXPATHLEN - 1] = '\0';
}
void
-newtapebuf(size)
- long size;
+newtapebuf(long size)
{
- static tapebufsize = -1;
+ static int tapebufsize = -1;
ntrec = size;
+ bufsize = ntrec * TP_BSIZE;
if (size <= tapebufsize)
return;
if (tapebuf != NULL)
free(tapebuf);
- tapebuf = malloc(size * TP_BSIZE);
- if (tapebuf == NULL) {
- fprintf(stderr, "Cannot allocate space for tape buffer\n");
- done(1);
- }
+ tapebuf = malloc(size * TP_BSIZE + sizeof(struct tapebuf));
+ if (tapebuf == NULL)
+ errx(1, "Cannot allocate space for tape buffer");
tapebufsize = size;
}
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+static void
+newcomprbuf(int size)
+{
+ size_t buf_size = (size+1) * TP_BSIZE + sizeof(struct tapebuf);
+ if (buf_size <= comprlen)
+ return;
+ comprlen = buf_size;
+ if (comprbuf != NULL)
+ free(comprbuf);
+ comprbuf = malloc(comprlen);
+ if (comprbuf == NULL)
+ errx(1, "Cannot allocate space for decompress buffer");
+}
+#endif /* HAVE_ZLIB || HAVE_BZLIB */
+
/*
* Verify that the tape drive can be accessed and
* that it actually is a dump tape.
*/
void
-setup()
+setup(void)
{
- int i, j, *ip;
- struct stat stbuf;
+ int i, j, *ip, bot_code;
+ struct STAT stbuf;
+ char *temptape;
+
+ Vprintf(stdout, "Verify tape and initialize maps\n");
+ if (Afile == NULL && bot_script) {
+ msg("Launching %s\n", bot_script);
+ bot_code = system_command(bot_script, magtape, 1);
+ if (bot_code != 0 && bot_code != 1) {
+ msg("Restore aborted by the beginning of tape script\n");
+ exit(1);
+ }
+ }
+
+ if (Afile)
+ temptape = Afile;
+ else
+ temptape = magtape;
- vprintf(stdout, "Verify tape and initialize maps\n");
#ifdef RRESTORE
if (host)
- mt = rmtopen(magtape, 0);
+ mt = rmtopen(temptape, 0);
else
#endif
if (pipein)
mt = 0;
else
- mt = open(magtape, O_RDONLY, 0);
- if (mt < 0) {
- fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
- done(1);
- }
- volno = 1;
- setdumpnum();
+ mt = OPEN(temptape, O_RDONLY, 0);
+ if (mt < 0)
+ err(1, "%s", magtape);
+ if (!Afile) {
+ volno = 1;
+ setmagtapein();
+ setdumpnum();
+ }
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+ readtape_func = readtape_set;
+#endif
FLUSHTAPEBUF();
- if (!pipein && !bflag)
- findtapeblksize();
+ findtapeblksize();
if (gethead(&spcl) == FAIL) {
blkcnt--; /* push back this block */
blksread--;
tpblksread--;
cvtflag++;
- if (gethead(&spcl) == FAIL) {
- fprintf(stderr, "Tape is not a dump tape\n");
- done(1);
- }
+ if (gethead(&spcl) == FAIL)
+ errx(1, "Tape is not a dump tape");
fprintf(stderr, "Converting to new file system format.\n");
}
+
+ if (zflag) {
+ fprintf(stderr, "Dump tape is compressed.\n");
+#if !defined(HAVE_ZLIB) && !defined(HAVE_BZLIB)
+ errx(1,"This restore version doesn't support decompression");
+#endif /* !HAVE_ZLIB && !HAVE_BZLIB */
+ }
if (pipein) {
endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC;
endoftapemark.s_spcl.c_type = TS_END;
}
if (vflag || command == 't' || command == 'C')
printdumpinfo();
- if (filesys == NULL) {
- filesys = spcl.c_filesys;
+ if (filesys[0] == '\0') {
+ char *dirptr;
+ strncpy(filesys, spcl.c_filesys, NAMELEN);
+ filesys[NAMELEN - 1] = '\0';
+ dirptr = strstr(filesys, " (dir");
+ if (dirptr != NULL)
+ *dirptr = '\0';
}
dumptime = spcl.c_ddate;
dumpdate = spcl.c_date;
- if (stat(".", &stbuf) < 0) {
- fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
- done(1);
- }
- if (stbuf.st_blksize > 0 && stbuf.st_blksize <= MAXBSIZE)
+ if (STAT(".", &stbuf) < 0)
+ err(1, "cannot stat .");
+ if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
+ fssize = TP_BSIZE;
+ if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
fssize = stbuf.st_blksize;
- if (((fssize - 1) & fssize) != 0) {
- fprintf(stderr, "bad block size %d\n", fssize);
- done(1);
- }
- if (spcl.c_volume != 1) {
- fprintf(stderr, "Tape is not volume 1 of the dump\n");
- done(1);
- }
+ if (((fssize - 1) & fssize) != 0)
+ errx(1, "bad block size %ld", fssize);
+ if (spcl.c_volume != 1)
+ errx(1, "Tape is not volume 1 of the dump");
if (gethead(&spcl) == FAIL) {
- dprintf(stdout, "header read failed at %d blocks\n", blksread);
+ Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread);
panic("no header after volume mark!\n");
}
findinode(&spcl);
- if (spcl.c_type != TS_CLRI) {
- fprintf(stderr, "Cannot find file removal list\n");
- done(1);
- }
+ if (spcl.c_type != TS_CLRI)
+ errx(1, "Cannot find file removal list");
maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
- dprintf(stdout, "maxino = %d\n", maxino);
+ Dprintf(stdout, "maxino = %ld\n", (long)maxino);
map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
if (map == NULL)
- panic("no memory for active inode map\n");
+ errx(1, "no memory for active inode map");
usedinomap = map;
curfile.action = USING;
getfile(xtrmap, xtrmapskip);
- if (spcl.c_type != TS_BITS) {
- fprintf(stderr, "Cannot find file dump list\n");
- done(1);
- }
+ findinode(&spcl);
+ if (spcl.c_type != TS_BITS)
+ errx(1, "Cannot find file dump list");
map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
if (map == (char *)NULL)
- panic("no memory for file dump list\n");
+ errx(1, "no memory for file dump list");
dumpmap = map;
curfile.action = USING;
getfile(xtrmap, xtrmapskip);
*/
if (oldinofmt == 0)
SETINO(WINO, dumpmap);
+ findinode(&spcl);
}
/*
* Prompt user to load a new dump volume.
* "Nextvol" is the next suggested volume to use.
* This suggested volume is enforced when doing full
- * or incremental restores, but can be overrridden by
+ * or incremental restores, but can be overridden by
* the user when only extracting a subset of the files.
*/
void
-getvol(nextvol)
- long nextvol;
+getvol(long nextvol)
{
- long newvol, savecnt, wantnext, i;
+ long newvol = 0, wantnext = 0, i;
+ long saved_blksread = 0, saved_tpblksread = 0;
union u_spcl tmpspcl;
# define tmpbuf tmpspcl.s_spcl
char buf[TP_BSIZE];
+ int haderror = 0, bot_code = 1;
if (nextvol == 1) {
tapesread = 0;
return;
goto gethdr;
}
- savecnt = blksread;
+ saved_blksread = blksread;
+ saved_tpblksread = tpblksread;
again:
if (pipein)
- done(1); /* pipes do not get a second chance */
- if (command == 'R' || command == 'r' || curfile.action != SKIP) {
+ exit(1); /* pipes do not get a second chance */
+ if (aflag || curfile.action != SKIP) {
newvol = nextvol;
wantnext = 1;
- } else {
+ } else {
newvol = 0;
wantnext = 0;
}
strcpy(buf, ": ");
for (i = 1; i < 32; i++)
if (tapesread & (1 << i)) {
- fprintf(stderr, "%s%d", buf, i);
+ fprintf(stderr, "%s%ld", buf, (long)i);
strcpy(buf, ", ");
}
fprintf(stderr, "\n");
}
do {
- fprintf(stderr, "Specify next volume #: ");
+ fprintf(stderr, "Specify next volume # (none if no more volumes): ");
(void) fflush(stderr);
- (void) fgets(buf, BUFSIZ, terminal);
+ (void) fgets(buf, TP_BSIZE, terminal);
} while (!feof(terminal) && buf[0] == '\n');
if (feof(terminal))
- done(1);
+ exit(1);
+ if (!strcmp(buf, "none\n")) {
+ terminateinput();
+ return;
+ }
newvol = atoi(buf);
if (newvol <= 0) {
fprintf(stderr,
return;
}
closemt();
- fprintf(stderr, "Mount tape volume %d\n", newvol);
- fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
- fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
- (void) fflush(stderr);
- (void) fgets(buf, BUFSIZ, terminal);
- if (feof(terminal))
- done(1);
- if (!strcmp(buf, "none\n")) {
- terminateinput();
- return;
+ if (Mflag) {
+ snprintf(magtape, MAXPATHLEN, "%s%03ld", magtapeprefix, newvol);
+ magtape[MAXPATHLEN - 1] = '\0';
+ }
+ if (bot_script && !haderror) {
+ msg("Launching %s\n", bot_script);
+ bot_code = system_command(bot_script, magtape, newvol);
+ if (bot_code != 0 && bot_code != 1) {
+ msg("Restore aborted by the beginning of tape script\n");
+ exit(1);
+ }
}
- if (buf[0] != '\n') {
- (void) strcpy(magtape, buf);
- magtape[strlen(magtape) - 1] = '\0';
+ if (haderror || (bot_code && !Mflag)) {
+ haderror = 0;
+ fprintf(stderr, "Mount tape volume %ld\n", (long)newvol);
+ fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
+ fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
+ (void) fflush(stderr);
+ (void) fgets(buf, TP_BSIZE, terminal);
+ if (feof(terminal))
+ exit(1);
+ if (!strcmp(buf, "none\n")) {
+ terminateinput();
+ return;
+ }
+ if (buf[0] != '\n') {
+ char *pos;
+ (void) strncpy(magtape, buf, sizeof(magtape));
+ magtape[sizeof(magtape) - 1] = '\0';
+ if ((pos = strchr(magtape, '\n')))
+ magtape[pos - magtape] = '\0';
+ }
}
#ifdef RRESTORE
if (host)
mt = rmtopen(magtape, 0);
else
#endif
- mt = open(magtape, O_RDONLY, 0);
+ mt = OPEN(magtape, O_RDONLY, 0);
if (mt == -1) {
fprintf(stderr, "Cannot open %s\n", magtape);
volno = -1;
+ haderror = 1;
goto again;
}
gethdr:
+ setmagtapein();
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+ readtape_func = readtape_set;
+#endif
volno = newvol;
setdumpnum();
FLUSHTAPEBUF();
+ findtapeblksize();
if (gethead(&tmpbuf) == FAIL) {
- dprintf(stdout, "header read failed at %d blocks\n", blksread);
+ Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread);
fprintf(stderr, "tape is not dump tape\n");
volno = 0;
+ haderror = 1;
+ blksread = saved_blksread;
+ tpblksread = saved_tpblksread;
goto again;
}
if (tmpbuf.c_volume != volno) {
fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume);
volno = 0;
+ haderror = 1;
+ blksread = saved_blksread;
+ tpblksread = saved_tpblksread;
goto again;
}
if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) {
-#ifdef __linux__
fprintf(stderr, "Wrong dump date\n\tgot: %s",
ctime4(&tmpbuf.c_date));
- fprintf(stderr, "\twanted: %s", ctime4(&dumpdate));
-#else
- fprintf(stderr, "Wrong dump date\n\tgot: %s",
- ctime(&tmpbuf.c_date));
fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
-#endif
volno = 0;
+ haderror = 1;
+ blksread = saved_blksread;
+ tpblksread = saved_tpblksread;
goto again;
}
tapesread |= 1 << volno;
- blksread = savecnt;
+ blksread = saved_blksread;
+ tpblksread = saved_tpblksread;
/*
* If continuing from the previous volume, skip over any
* blocks read already at the end of the previous volume.
* If coming to this volume at random, skip to the beginning
* of the next record.
*/
- dprintf(stdout, "read %ld recs, tape starts with %ld\n",
- tpblksread, tmpbuf.c_firstrec);
+ if (zflag) {
+ fprintf(stderr, "Dump tape is compressed.\n");
+#if !defined(HAVE_ZLIB) && !defined(HAVE_BZLIB)
+ errx(1,"This restore version doesn't support decompression");
+#endif /* !HAVE_ZLIB && !HAVE_BZLIB */
+ }
+ Dprintf(stdout, "read %ld recs, tape starts with %ld\n",
+ tpblksread, (long)tmpbuf.c_firstrec);
if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) {
if (!wantnext) {
tpblksread = tmpbuf.c_firstrec;
* -1 since we've read the volume header
*/
i = tpblksread - tmpbuf.c_firstrec - 1;
- dprintf(stderr, "Skipping %d duplicate record%s.\n",
- i, i > 1 ? "s" : "");
+ Dprintf(stderr, "Skipping %ld duplicate record%s.\n",
+ (long)i, i > 1 ? "s" : "");
while (--i >= 0)
readtape(buf);
}
findinode(&spcl);
if (gettingfile) {
gettingfile = 0;
- longjmp(restart, 1);
+ siglongjmp(restart, 1);
}
}
* Handle unexpected EOF.
*/
static void
-terminateinput()
+terminateinput(void)
{
if (gettingfile && curfile.action == USING) {
curfile.ino = maxino;
if (gettingfile) {
gettingfile = 0;
- longjmp(restart, 1);
+ siglongjmp(restart, 1);
}
}
* appropriate one.
*/
static void
-setdumpnum()
+setdumpnum(void)
{
struct mtop tcom;
if (dumpnum == 1 || volno != 1)
return;
- if (pipein) {
- fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
- done(1);
- }
+ if (pipein)
+ errx(1, "Cannot have multiple dumps on pipe input");
tcom.mt_op = MTFSF;
tcom.mt_count = dumpnum - 1;
#ifdef RRESTORE
if (host)
rmtioctl(MTFSF, dumpnum - 1);
- else
+ else
#endif
if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0)
- fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
+ warn("ioctl MTFSF");
}
void
-printdumpinfo()
+printdumpinfo(void)
{
-#ifdef __linux__
fprintf(stdout, "Dump date: %s", ctime4(&spcl.c_date));
fprintf(stdout, "Dumped from: %s",
(spcl.c_ddate == 0) ? "the epoch\n" : ctime4(&spcl.c_ddate));
-#else
- fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date));
- fprintf(stdout, "Dumped from: %s",
- (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate));
-#endif
if (spcl.c_host[0] == '\0')
return;
- fprintf(stderr, "Level %d dump of %s on %s:%s\n",
+ fprintf(stdout, "Level %d dump of %s on %s:%s\n",
spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
- fprintf(stderr, "Label: %s\n", spcl.c_label);
+ fprintf(stdout, "Label: %s\n", spcl.c_label);
+}
+
+void
+printvolinfo(void)
+{
+ int i;
+
+ if (volinfo[1] == ROOTINO) {
+ printf("Starting inode numbers by volume:\n");
+ for (i = 1; i < TP_NINOS && volinfo[i] != 0; ++i)
+ printf("\tVolume %d: %lu\n", i, (unsigned long)volinfo[i]);
+ }
}
int
-extractfile(name)
- char *name;
+extractfile(char *name)
{
- int flags;
+ unsigned int flags;
mode_t mode;
struct timeval timep[2];
struct entry *ep;
-#ifdef __linux__
- int err;
- uid_t uid;
- gid_t gid;
-#endif
curfile.name = name;
curfile.action = USING;
return (FAIL);
case IFSOCK:
- vprintf(stdout, "skipped socket %s\n", name);
+ Vprintf(stdout, "skipped socket %s\n", name);
skipfile();
return (GOOD);
skipfile();
return (GOOD);
}
- vprintf(stdout, "extract file %s\n", name);
+ Vprintf(stdout, "extract file %s\n", name);
return (genliteraldir(name, curfile.ino));
case IFLNK:
+ {
+#ifdef HAVE_LCHOWN
+ uid_t luid = curfile.dip->di_uid;
+ gid_t lgid = curfile.dip->di_gid;
+#endif
lnkbuf[0] = '\0';
pathlen = 0;
-#ifdef __linux__
- uid = curfile.dip->di_uid;
- gid = curfile.dip->di_gid;
-#endif
getfile(xtrlnkfile, xtrlnkskip);
if (pathlen == 0) {
- vprintf(stdout,
+ Vprintf(stdout,
"%s: zero length symbolic link (ignored)\n", name);
return (GOOD);
}
-#ifdef __linux__
- err = linkit(lnkbuf, name, SYMLINK);
- if (err == GOOD)
- (void) chown(name, uid, gid);
- return (err);
-#else
- return (linkit(lnkbuf, name, SYMLINK));
+ if (linkit(lnkbuf, name, SYMLINK) == FAIL)
+ return (FAIL);
+#ifdef HAVE_LCHOWN
+ (void) lchown(name, luid, lgid);
#endif
+ return (GOOD);
+ }
- case IFCHR:
- case IFBLK:
- vprintf(stdout, "extract special file %s\n", name);
+ case IFIFO:
+ Vprintf(stdout, "extract fifo %s\n", name);
if (Nflag) {
skipfile();
return (GOOD);
}
- if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
- fprintf(stderr, "%s: cannot create special file: %s\n",
- name, strerror(errno));
+ if (uflag && !Nflag)
+ (void)unlink(name);
+ if (mkfifo(name, mode) < 0) {
+ warn("%s: cannot create fifo", name);
skipfile();
return (FAIL);
}
(void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
(void) chmod(name, mode);
-#ifdef __linux__
- (void) fsetflags(name, flags);
+ if (flags)
+#ifdef __linux__
+ (void) fsetflags(name, flags);
#else
- (void) chflags(name, flags);
+ (void) chflags(name, flags);
#endif
skipfile();
utimes(name, timep);
return (GOOD);
- case IFIFO:
- vprintf(stdout, "extract fifo %s\n", name);
+ case IFCHR:
+ case IFBLK:
+ Vprintf(stdout, "extract special file %s\n", name);
if (Nflag) {
skipfile();
return (GOOD);
}
- if (mkfifo(name, mode) < 0) {
- fprintf(stderr, "%s: cannot create fifo: %s\n",
- name, strerror(errno));
+ if (uflag)
+ (void)unlink(name);
+ if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
+ warn("%s: cannot create special file", name);
skipfile();
return (FAIL);
}
(void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
(void) chmod(name, mode);
+ if (flags)
#ifdef __linux__
- (void) fsetflags(name, flags);
+ {
+ warn("%s: fsetflags called on a special file", name);
+ (void) fsetflags(name, flags);
+ }
#else
- (void) chflags(name, flags);
+ (void) chflags(name, flags);
#endif
skipfile();
utimes(name, timep);
return (GOOD);
case IFREG:
- vprintf(stdout, "extract file %s\n", name);
+ Vprintf(stdout, "extract file %s\n", name);
if (Nflag) {
skipfile();
return (GOOD);
}
- if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
+ if (uflag)
+ (void)unlink(name);
+ if ((ofile = OPEN(name, O_WRONLY | O_CREAT | O_TRUNC,
0666)) < 0) {
- fprintf(stderr, "%s: cannot create file: %s\n",
- name, strerror(errno));
+ warn("%s: cannot create file", name);
skipfile();
return (FAIL);
}
(void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid);
(void) fchmod(ofile, mode);
+ if (flags)
#ifdef __linux__
- (void) fsetflags(ofile, flags);
+ (void) setflags(ofile, flags);
#else
- (void) fchflags(ofile, flags);
+ (void) fchflags(ofile, flags);
#endif
getfile(xtrfile, xtrskip);
(void) close(ofile);
* skip over bit maps on the tape
*/
void
-skipmaps()
+skipmaps(void)
{
while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
* skip over a file on the tape
*/
void
-skipfile()
+skipfile(void)
{
curfile.action = SKIP;
* to the skip function.
*/
void
-getfile(fill, skip)
- void (*fill) __P((char *, long));
- void (*skip) __P((char *, long));
+getfile(void (*fill) __P((char *, size_t)), void (*skip) __P((char *, size_t)))
{
- register int i;
- int curblk = 0;
- quad_t size = spcl.c_dinode.di_size;
- int last_write_was_hole = 0;
- long origsize = size;
+ int i;
+ volatile int curblk = 0;
+ volatile quad_t size = spcl.c_dinode.di_size;
+ volatile int last_write_was_hole = 0;
+ quad_t origsize = size;
static char clearedbuf[MAXBSIZE];
char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
char junk[TP_BSIZE];
gettingfile++;
loop:
for (i = 0; i < spcl.c_count; i++) {
- if (spcl.c_addr[i]) {
+ if (readmapflag || spcl.c_addr[i]) {
readtape(&buf[curblk++][0]);
if (curblk == fssize / TP_BSIZE) {
- (*fill)((char *)buf, (long)(size > TP_BSIZE ?
+ (*fill)((char *)buf, (size_t)(size > TP_BSIZE ?
fssize : (curblk - 1) * TP_BSIZE + size));
curblk = 0;
last_write_was_hole = 0;
}
} else {
if (curblk > 0) {
- (*fill)((char *)buf, (long)(size > TP_BSIZE ?
+ (*fill)((char *)buf, (size_t)(size > TP_BSIZE ?
curblk * TP_BSIZE :
(curblk - 1) * TP_BSIZE + size));
curblk = 0;
}
if ((size -= TP_BSIZE) <= 0) {
for (i++; i < spcl.c_count; i++)
- if (spcl.c_addr[i])
+ if (readmapflag || spcl.c_addr[i])
readtape(junk);
break;
}
if (gethead(&spcl) == GOOD && size > 0) {
if (spcl.c_type == TS_ADDR)
goto loop;
- dprintf(stdout,
- "Missing address (header) block for %s at %d blocks\n",
- curfile.name, blksread);
+ Dprintf(stdout,
+ "Missing address (header) block for %s at %ld blocks\n",
+ curfile.name, (long)blksread);
}
if (curblk > 0) {
- (*fill)((char *)buf, (curblk * TP_BSIZE) + size);
+ (*fill)((char *)buf, (size_t)(curblk * TP_BSIZE) + size);
last_write_was_hole = 0;
}
+ if (size > 0) {
+ fprintf(stderr, "Missing blocks at the end of %s, assuming hole\n", curfile.name);
+ while (size > 0) {
+ size_t skp = size > TP_BSIZE ? TP_BSIZE : size;
+ (*skip)(clearedbuf, skp);
+ size -= skp;
+ }
+ last_write_was_hole = 1;
+ }
if (last_write_was_hole) {
- ftruncate(ofile, origsize);
+ FTRUNCATE(ofile, origsize);
}
findinode(&spcl);
gettingfile = 0;
* Write out the next block of a file.
*/
static void
-xtrfile(buf, size)
- char *buf;
- long size;
+xtrfile(char *buf, size_t size)
{
if (Nflag)
return;
- if (write(ofile, buf, (int) size) == -1) {
- fprintf(stderr,
- "write error extracting inode %d, name %s\nwrite: %s\n",
- curfile.ino, curfile.name, strerror(errno));
- done(1);
- }
+ if (write(ofile, buf, (int) size) == -1)
+ err(1, "write error extracting inode %lu, name %s\nwrite",
+ (unsigned long)curfile.ino, curfile.name);
}
/*
*/
/* ARGSUSED */
static void
-xtrskip(buf, size)
- char *buf;
- long size;
+xtrskip(char *buf, size_t size)
{
- if (lseek(ofile, size, SEEK_CUR) == -1) {
- fprintf(stderr,
- "seek error extracting inode %d, name %s\nlseek: %s\n",
- curfile.ino, curfile.name, strerror(errno));
- done(1);
- }
+ if (LSEEK(ofile, (off_t)size, SEEK_CUR) == -1)
+ err(1, "seek error extracting inode %lu, name %s\nlseek",
+ (unsigned long)curfile.ino, curfile.name);
}
/*
* Collect the next block of a symbolic link.
*/
static void
-xtrlnkfile(buf, size)
- char *buf;
- long size;
+xtrlnkfile(char *buf, size_t size)
{
pathlen += size;
- if (pathlen > MAXPATHLEN) {
- fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
+ if (pathlen > MAXPATHLEN)
+ errx(1, "symbolic link name: %s->%s%s; too long %d",
curfile.name, lnkbuf, buf, pathlen);
- done(1);
- }
(void) strcat(lnkbuf, buf);
}
*/
/* ARGSUSED */
static void
-xtrlnkskip(buf, size)
- char *buf;
- long size;
+xtrlnkskip(char *buf, size_t size)
{
- fprintf(stderr, "unallocated block in symbolic link %s\n",
- curfile.name);
- done(1);
+ errx(1, "unallocated block in symbolic link %s", curfile.name);
}
/*
* Collect the next block of a bit map.
*/
static void
-xtrmap(buf, size)
- char *buf;
- long size;
+xtrmap(char *buf, size_t size)
{
memmove(map, buf, size);
*/
/* ARGSUSED */
static void
-xtrmapskip(buf, size)
- char *buf;
- long size;
+xtrmapskip(char *buf, size_t size)
{
panic("hole in map\n");
*/
/* ARGSUSED */
void
-xtrnull(buf, size)
- char *buf;
- long size;
+xtrnull(char *buf, size_t size)
{
return;
}
-int
+#if COMPARE_ONTHEFLY
+/*
+ * Compare the next block of a file.
+ */
+static void
+xtrcmpfile(char *buf, size_t size)
+{
+ static char cmpbuf[MAXBSIZE];
+
+ if (cmperror)
+ return;
+
+ if (read(ifile, cmpbuf, size) != size) {
+ fprintf(stderr, "%s: size has changed.\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+
+ if (memcmp(buf, cmpbuf, size) != 0) {
+ fprintf(stderr, "%s: tape and disk copies are different\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+}
+
+/*
+ * Skip over a hole in a file.
+ */
+static void
+xtrcmpskip(char *buf, size_t size)
+{
+ static char cmpbuf[MAXBSIZE];
+ int i;
+
+ if (cmperror)
+ return;
+
+ if (read(ifile, cmpbuf, size) != size) {
+ fprintf(stderr, "%s: size has changed.\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+
+ for (i = 0; i < size; ++i)
+ if (cmpbuf[i] != '\0') {
+ fprintf(stderr, "%s: tape and disk copies are different\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+}
+#endif /* COMPARE_ONTHEFLY */
+
+#if !COMPARE_ONTHEFLY
+static int
do_cmpfiles(int fd_tape, int fd_disk, long size)
{
-#ifndef BUFSIZE
-#define BUFSIZE 1024
-#endif
static char buf_tape[BUFSIZ];
static char buf_disk[BUFSIZ];
- int left = size;
- int n_tape;
- int n_disk;
+ ssize_t n_tape;
+ ssize_t n_disk;
while (size > 0) {
- if ((n_tape = read(fd_tape, buf_tape, BUFSIZE)) < 1) {
+ if ((n_tape = read(fd_tape, buf_tape, sizeof(buf_tape))) < 1) {
close(fd_tape), close(fd_disk);
panic("do_cmpfiles: unexpected EOF[1]");
}
- if ((n_disk = read(fd_disk, buf_disk, BUFSIZE)) < 1) {
+ if ((n_disk = read(fd_disk, buf_disk, sizeof(buf_tape))) < 1) {
close(fd_tape), close(fd_disk);
panic("do_cmpfiles: unexpected EOF[2]");
}
close(fd_tape), close(fd_disk);
panic("do_cmpfiles: sizes different!");
}
- if (memcmp(buf_tape, buf_disk, n_tape) != 0) return (1);
+ if (memcmp(buf_tape, buf_disk, (size_t)n_tape) != 0) return (1);
size -= n_tape;
}
return (0);
/* for debugging compare problems */
#undef COMPARE_FAIL_KEEP_FILE
+static
#ifdef COMPARE_FAIL_KEEP_FILE
/* return true if tapefile should be unlinked after compare */
int
#else
void
#endif
-cmpfiles(char *tapefile, char *diskfile, struct stat *sbuf_disk)
+cmpfiles(char *tapefile, char *diskfile, struct STAT *sbuf_disk)
{
- struct stat sbuf_tape;
+ struct STAT sbuf_tape;
int fd_tape, fd_disk;
- if (stat(tapefile, &sbuf_tape) != 0) {
+ if (STAT(tapefile, &sbuf_tape) != 0) {
panic("Can't lstat tmp file %s: %s\n", tapefile,
strerror(errno));
+ do_compare_error;
}
if (sbuf_disk->st_size != sbuf_tape.st_size) {
fprintf(stderr,
- "%s: size changed from %d to %d.\n",
- diskfile, sbuf_tape.st_size, sbuf_disk->st_size);
+ "%s: size changed from %ld to %ld.\n",
+ diskfile, (long)sbuf_tape.st_size, (long)sbuf_disk->st_size);
+ do_compare_error;
#ifdef COMPARE_FAIL_KEEP_FILE
return (0);
#else
#endif
}
- if ((fd_tape = open(tapefile, O_RDONLY)) < 0) {
+ if ((fd_tape = OPEN(tapefile, O_RDONLY)) < 0) {
panic("Can't open %s: %s\n", tapefile, strerror(errno));
+ do_compare_error;
}
- if ((fd_disk = open(diskfile, O_RDONLY)) < 0) {
+ if ((fd_disk = OPEN(diskfile, O_RDONLY)) < 0) {
close(fd_tape);
panic("Can't open %s: %s\n", diskfile, strerror(errno));
+ do_compare_error;
}
if (do_cmpfiles(fd_tape, fd_disk, sbuf_tape.st_size)) {
diskfile);
close(fd_tape);
close(fd_disk);
+ do_compare_error;
#ifdef COMPARE_FAIL_KEEP_FILE
/* rename the file to live in /tmp */
/* rename `tapefile' to /tmp/<basename of diskfile> */
if (!p) {
panic("can't find / in %s\n", diskfile);
}
- sprintf(newname, "%s/debug/%s", tmpdir, p + 1);
+ snprintf(newname, sizeof(newname), "%s/debug/%s", tmpdir, p + 1);
if (rename(tapefile, newname)) {
panic("rename from %s to %s failed: %s\n",
tapefile, newname,
return (1);
#endif
}
+#endif /* !COMPARE_ONTHEFLY */
-static char tmpfilename[128];
+#if !COMPARE_ONTHEFLY
+static char tmpfilename[MAXPATHLEN];
+#endif
void
-comparefile(name)
- char *name;
+comparefile(char *name)
{
- static char *tmpfile = NULL;
int mode;
- struct stat sb, stemp;
+ struct STAT sb;
int r;
+#if !COMPARE_ONTHEFLY
+ static char *tmpfile = NULL;
+ struct STAT stemp;
+#endif
- if ((r = lstat(name, &sb)) != 0) {
- fprintf(stderr, "%s: does not exist (%d, %d).\n", name, r, errno);
+ if ((r = LSTAT(name, &sb)) != 0) {
+ warn("%s: does not exist (%d)", name, r);
+ do_compare_error;
skipfile();
return;
}
curfile.name = name;
+ curfile.action = USING;
mode = curfile.dip->di_mode;
- vprintf(stdout, "comparing %s (size: %d, mode: 0%o)\n", name,
- sb.st_size, mode);
+ Vprintf(stdout, "comparing %s (size: %ld, mode: 0%o)\n", name,
+ (long)sb.st_size, mode);
if (sb.st_mode != mode) {
fprintf(stderr, "%s: mode changed from 0%o to 0%o.\n",
name, mode & 07777, sb.st_mode & 07777);
+ do_compare_error;
}
switch (mode & IFMT) {
default:
if (!(sb.st_mode & S_IFLNK)) {
fprintf(stderr, "%s: is no longer a symbolic link\n",
name);
+ do_compare_error;
return;
}
lnkbuf[0] = '\0';
fprintf(stderr,
"%s: zero length symbolic link (ignored)\n",
name);
+ do_compare_error;
return;
}
if ((lsize = readlink(name, lbuf, MAXPATHLEN)) < 0) {
panic("readlink of %s failed: %s", name,
strerror(errno));
+ do_compare_error;
}
lbuf[lsize] = 0;
if (strcmp(lbuf, lnkbuf) != 0) {
fprintf(stderr,
"%s: symbolic link changed from %s to %s.\n",
name, lnkbuf, lbuf);
+ do_compare_error;
return;
}
return;
if (!(sb.st_mode & (S_IFCHR|S_IFBLK))) {
fprintf(stderr, "%s: no longer a special file\n",
name);
+ do_compare_error;
skipfile();
return;
}
fprintf(stderr,
"%s: device changed from %d,%d to %d,%d.\n",
name,
- ((int)curfile.dip->di_rdev >> 8) & 0xf,
- (int)curfile.dip->di_rdev & 0xf,
- (sb.st_rdev >> 8) & 0xf,
- sb.st_rdev & 0xf);
+ ((int)curfile.dip->di_rdev >> 8) & 0xff,
+ (int)curfile.dip->di_rdev & 0xff,
+ ((int)sb.st_rdev >> 8) & 0xff,
+ (int)sb.st_rdev & 0xff);
+ do_compare_error;
}
skipfile();
return;
case IFREG:
+#if COMPARE_ONTHEFLY
+ if ((ifile = OPEN(name, O_RDONLY)) < 0) {
+ panic("Can't open %s: %s\n", name, strerror(errno));
+ skipfile();
+ do_compare_error;
+ }
+ else {
+ cmperror = 0;
+ getfile(xtrcmpfile, xtrcmpskip);
+ if (!cmperror) {
+ char c;
+ if (read(ifile, &c, 1) != 0) {
+ fprintf(stderr, "%s: size has changed.\n",
+ name);
+ cmperror = 1;
+ }
+ }
+ if (cmperror)
+ do_compare_error;
+ close(ifile);
+ }
+#else
if (tmpfile == NULL) {
/* argument to mktemp() must not be in RO space: */
- sprintf(tmpfilename, "%s/restoreCXXXXXX", tmpdir);
+ snprintf(tmpfilename, sizeof(tmpfilename), "%s/restoreCXXXXXX", tmpdir);
tmpfile = mktemp(&tmpfilename[0]);
}
- if ((stat(tmpfile, &stemp) == 0) && (unlink(tmpfile) != 0)) {
+ if ((STAT(tmpfile, &stemp) == 0) && (unlink(tmpfile) != 0)) {
panic("cannot delete tmp file %s: %s\n",
tmpfile, strerror(errno));
}
- if ((ofile = creat(tmpfile, 0600)) < 0) {
+ if ((ofile = OPEN(tmpfile, O_WRONLY | O_CREAT | O_TRUNC, 0600)) < 0) {
panic("cannot create file temp file %s: %s\n",
name, strerror(errno));
}
cmpfiles(tmpfile, name, &sb);
unlink(tmpfile);
#endif
+#endif /* COMPARE_ONTHEFLY */
return;
}
/* NOTREACHED */
}
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+static void (*readtape_func)(char *) = readtape_set;
+
+/*
+ * Read TP_BSIZE blocks from the input.
+ * Handle read errors, and end of media.
+ * Decompress compressed blocks.
+ */
+static void
+readtape(char *buf)
+{
+ (*readtape_func)(buf); /* call the actual processing routine */
+}
+
+/*
+ * Set function pointer for readtape() routine. zflag and magtapein must
+ * be correctly set before the first call to readtape().
+ */
+static void
+readtape_set(char *buf)
+{
+ if (!zflag)
+ readtape_func = readtape_uncompr;
+ else {
+ newcomprbuf(ntrec);
+ if (magtapein)
+ readtape_func = readtape_comprtape;
+ else
+ readtape_func = readtape_comprfile;
+ }
+ readtape(buf);
+}
+
+#endif /* HAVE_ZLIB || HAVE_BZLIB */
+
/*
+ * This is the original readtape(), it's used for reading uncompressed input.
* Read TP_BSIZE blocks from the input.
* Handle read errors, and end of media.
*/
static void
-readtape(buf)
- char *buf;
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+readtape_uncompr(char *buf)
+#else
+readtape(char *buf)
+#endif
{
- long rd, newvol, i;
+ ssize_t rd, newvol, i;
int cnt, seek_failed;
if (blkcnt < numtrec) {
- memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
+ memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
blksread++;
tpblksread++;
return;
}
+ tbufptr = tapebuf;
for (i = 0; i < ntrec; i++)
((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
if (numtrec == 0)
else
#endif
i = read(mt, &tapebuf[rd], cnt);
+
/*
* Check for mid-tape short read error.
* If found, skip rest of buffer and start with the next.
*/
if (!pipein && numtrec < ntrec && i > 0) {
- dprintf(stdout, "mid-media short read error.\n");
+ Dprintf(stdout, "mid-media short read error.\n");
numtrec = ntrec;
}
/*
* Short read. Process the blocks read.
*/
if (i % TP_BSIZE != 0)
- vprintf(stdout,
- "partial block read: %d should be %d\n",
- i, ntrec * TP_BSIZE);
+ Vprintf(stdout,
+ "partial block read: %ld should be %ld\n",
+ (long)i, ntrec * TP_BSIZE);
numtrec = i / TP_BSIZE;
}
}
fprintf(stderr, "restoring %s\n", curfile.name);
break;
case SKIP:
- fprintf(stderr, "skipping over inode %d\n",
- curfile.ino);
+ fprintf(stderr, "skipping over inode %lu\n",
+ (unsigned long)curfile.ino);
break;
}
if (!yflag && !reply("continue"))
- done(1);
+ exit(1);
i = ntrec * TP_BSIZE;
- memset(tapebuf, 0, i);
+ memset(tapebuf, 0, (size_t)i);
#ifdef RRESTORE
if (host)
seek_failed = (rmtseek(i, 1) < 0);
else
#endif
- seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
+ seek_failed = (LSEEK(mt, i, SEEK_CUR) == (off_t)-1);
if (seek_failed) {
- fprintf(stderr,
- "continuation failed: %s\n", strerror(errno));
- done(1);
+ warn("continuation failed");
+ if (!yflag && !reply("assume end-of-tape and continue"))
+ exit(1);
+ i = 0;
}
}
/*
* Handle end of tape.
*/
if (i == 0) {
- vprintf(stdout, "End-of-tape encountered\n");
+ Vprintf(stdout, "End-of-tape encountered\n");
if (!pipein) {
newvol = volno + 1;
volno = 0;
panic("partial block read: %d should be %d\n",
rd, ntrec * TP_BSIZE);
terminateinput();
- memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
+ memmove(&tapebuf[rd], &endoftapemark, TP_BSIZE);
}
blkcnt = 0;
- memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
+ memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
blksread++;
tpblksread++;
}
+#if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
+
+/*
+ * Read a compressed format block from a file or pipe and uncompress it.
+ * Attempt to handle read errors, and end of file.
+ */
static void
-findtapeblksize()
+readtape_comprfile(char *buf)
{
- register long i;
+ long rl, size, i, ret;
+ int newvol;
+ struct tapebuf *tpb;
+ if (blkcnt < numtrec) {
+ memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
+ blksread++;
+ tpblksread++;
+ return;
+ }
+ /* need to read the next block */
+ tbufptr = tapebuf;
for (i = 0; i < ntrec; i++)
((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
+ numtrec = ntrec;
+ tpb = (struct tapebuf *) tapebuf;
+
+ /* read the block prefix */
+ ret = read_a_block(mt, tapebuf, PREFIXSIZE, &rl);
+
+ if (Vflag && (ret == 0 || rl < PREFIXSIZE || tpb->length == 0))
+ ret = 0;
+ if (ret <= 0)
+ goto readerr;
+
+ /* read the data */
+ size = tpb->length;
+ if (size > bufsize) {
+ /* something's wrong */
+ Vprintf(stdout, "Prefix size error, max size %d, got %ld\n",
+ bufsize, size);
+ size = bufsize;
+ tpb->length = bufsize;
+ }
+ ret = read_a_block(mt, tpb->buf, size, &rl);
+ if (ret <= 0)
+ goto readerr;
+
+ tbufptr = decompress_tapebuf(tpb, rl + PREFIXSIZE);
+ if (tbufptr == NULL) {
+ msg_read_error("File decompression error while");
+ if (!yflag && !reply("continue"))
+ exit(1);
+ memset(tapebuf, 0, bufsize);
+ tbufptr = tapebuf;
+ }
+
blkcnt = 0;
+ memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
+ blksread++;
+ tpblksread++;
+ return;
+
+readerr:
+ /* Errors while reading from a file or pipe are catastrophic. Since
+ * there are no block boundaries, it's impossible to bypass the
+ * block in error and find the start of the next block.
+ */
+ if (ret == 0) {
+ /* It's possible to have multiple input files using -M
+ * and -f file1,file2...
+ */
+ Vprintf(stdout, "End-of-File encountered\n");
+ if (!pipein) {
+ newvol = volno + 1;
+ volno = 0;
+ numtrec = 0;
+ getvol(newvol);
+ readtape(buf);
+ return;
+ }
+ }
+ msg_read_error("Read error while");
+ /* if (!yflag && !reply("continue")) */
+ exit(1);
+}
+
+/*
+ * Read compressed data from a tape and uncompress it.
+ * Handle read errors, and end of media.
+ * Since a tape consists of separate physical blocks, we try
+ * to recover from errors by repositioning the tape to the next
+ * block.
+ */
+static void
+readtape_comprtape(char *buf)
+{
+ long rl, size, i;
+ int ret, newvol;
+ struct tapebuf *tpb;
+ struct mtop tcom;
+
+ if (blkcnt < numtrec) {
+ memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
+ blksread++;
+ tpblksread++;
+ return;
+ }
+ /* need to read the next block */
+ tbufptr = tapebuf;
+ for (i = 0; i < ntrec; i++)
+ ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
+ numtrec = ntrec;
+ tpb = (struct tapebuf *) tapebuf;
+
+ /* read the block */
+ size = bufsize + PREFIXSIZE;
+ ret = read_a_block(mt, tapebuf, size, &rl);
+ if (ret <= 0)
+ goto readerr;
+
+ tbufptr = decompress_tapebuf(tpb, rl);
+ if (tbufptr == NULL) {
+ msg_read_error("Tape decompression error while");
+ if (!yflag && !reply("continue"))
+ exit(1);
+ memset(tapebuf, 0, PREFIXSIZE + bufsize);
+ tbufptr = tapebuf;
+ }
+ goto moverecord;
+
+readerr:
+ /* Handle errors: EOT switches to the next volume, other errors
+ * attempt to position the tape to the next block.
+ */
+ if (ret == 0) {
+ Vprintf(stdout, "End-of-tape encountered\n");
+ newvol = volno + 1;
+ volno = 0;
+ numtrec = 0;
+ getvol(newvol);
+ readtape(buf);
+ return;
+ }
+
+ msg_read_error("Tape read error while");
+ if (!yflag && !reply("continue"))
+ exit(1);
+ memset(tapebuf, 0, PREFIXSIZE + bufsize);
+ tbufptr = tapebuf;
+
#ifdef RRESTORE
if (host)
- i = rmtread(tapebuf, ntrec * TP_BSIZE);
+ rl = rmtioctl(MTFSR, 1);
else
#endif
- i = read(mt, tapebuf, ntrec * TP_BSIZE);
+ {
+ tcom.mt_op = MTFSR;
+ tcom.mt_count = 1;
+ rl = ioctl(mt, MTIOCTOP, &tcom);
+ }
+
+ if (rl < 0) {
+ warn("continuation failed");
+ if (!yflag && !reply("assume end-of-tape and continue"))
+ exit(1);
+ ret = 0; /* end of tape */
+ goto readerr;
+ }
+
+moverecord:
+ blkcnt = 0;
+ memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
+ blksread++;
+ tpblksread++;
+}
+
+/*
+ * Decompress a struct tapebuf into a buffer. readsize is the size read
+ * from the tape/file and is used for error messages. Returns a pointer
+ * to the location of the uncompressed buffer or NULL on errors.
+ * Adjust numtrec and complain for a short block.
+ */
+static char *
+decompress_tapebuf(struct tapebuf *tpbin, int readsize)
+{
+ /* If zflag is on, all blocks have a struct tapebuf prefix */
+ /* zflag gets set in setup() from the dump header */
+ int cresult, blocklen;
+ unsigned long worklen;
+#ifdef HAVE_BZLIB
+ unsigned int worklen2;
+#endif
+ char *output = NULL,*reason = NULL, *lengtherr = NULL;
+
+ /* build a length error message */
+ blocklen = tpbin->length;
+ if (readsize < blocklen + PREFIXSIZE)
+ lengtherr = "short";
+ else
+ if (readsize > blocklen + PREFIXSIZE)
+ lengtherr = "long";
+
+ worklen = comprlen;
+ cresult = 1;
+ if (tpbin->compressed) {
+ /* uncompress whatever we read, if it fails, complain later */
+ if (tpbin->flags == COMPRESS_ZLIB) {
+#ifndef HAVE_ZLIB
+ errx(1,"This restore version doesn't support zlib decompression");
+#else
+ cresult = uncompress(comprbuf, &worklen,
+ tpbin->buf, blocklen);
+ output = comprbuf;
+ switch (cresult) {
+ case Z_OK:
+ break;
+ case Z_MEM_ERROR:
+ reason = "not enough memory";
+ break;
+ case Z_BUF_ERROR:
+ reason = "buffer too small";
+ break;
+ case Z_DATA_ERROR:
+ reason = "data error";
+ break;
+ default:
+ reason = "unknown";
+ }
+ if (cresult == Z_OK)
+ cresult = 1;
+ else
+ cresult = 0;
+#endif /* HAVE_ZLIB */
+ }
+ if (tpbin->flags == COMPRESS_BZLIB) {
+#ifndef HAVE_BZLIB
+ errx(1,"This restore version doesn't support bzlib decompression");
+#else
+ worklen2 = worklen;
+ cresult = BZ2_bzBuffToBuffDecompress(
+ comprbuf, &worklen2,
+ tpbin->buf, blocklen, 0, 0);
+ worklen = worklen2;
+ output = comprbuf;
+ switch (cresult) {
+ case BZ_OK:
+ break;
+ case BZ_MEM_ERROR:
+ reason = "not enough memory";
+ break;
+ case BZ_OUTBUFF_FULL:
+ reason = "buffer too small";
+ break;
+ case BZ_DATA_ERROR:
+ case BZ_DATA_ERROR_MAGIC:
+ case BZ_UNEXPECTED_EOF:
+ reason = "data error";
+ break;
+ default:
+ reason = "unknown";
+ }
+ if (cresult == BZ_OK)
+ cresult = 1;
+ else
+ cresult = 0;
+#endif /* HAVE_BZLIB */
+ }
+ }
+ else {
+ output = tpbin->buf;
+ worklen = blocklen;
+ }
+ if (cresult) {
+ numtrec = worklen / TP_BSIZE;
+ if (worklen % TP_BSIZE != 0)
+ reason = "length mismatch";
+ }
+ if (reason) {
+ if (lengtherr)
+ fprintf(stderr, "%s compressed block: %d expected: %d\n",
+ lengtherr, readsize, tpbin->length + PREFIXSIZE);
+ fprintf(stderr, "decompression error, block %ld: %s\n",
+ tpblksread+1, reason);
+ if (!cresult)
+ output = NULL;
+ }
+ return output;
+}
- if (i <= 0) {
- fprintf(stderr, "tape read error: %s\n", strerror(errno));
- done(1);
+/*
+ * Print an error message for a read error.
+ * This was exteracted from the original readtape().
+ */
+static void
+msg_read_error(char *m)
+{
+ switch (curfile.action) {
+ default:
+ fprintf(stderr, "%s trying to set up tape\n", m);
+ break;
+ case UNKNOWN:
+ fprintf(stderr, "%s trying to resynchronize\n", m);
+ break;
+ case USING:
+ fprintf(stderr, "%s restoring %s\n", m, curfile.name);
+ break;
+ case SKIP:
+ fprintf(stderr, "%s skipping over inode %lu\n", m,
+ (unsigned long)curfile.ino);
+ break;
}
+}
+#endif /* HAVE_ZLIB || HAVE_BZLIB */
+
+/*
+ * Read the first block and get the blocksize from it. Test
+ * for a compressed dump tape/file. setup() will make the final
+ * determination by checking the compressed flag if gethead()
+ * finds a valid header. The test here is necessary to offset the buffer
+ * by the size of the compressed prefix. zflag is set here so that
+ * readtape_set can set the correct function pointer for readtape().
+ * Note that the first block of each tape/file is not compressed
+ * and does not have a prefix.
+ */
+static void
+findtapeblksize(void)
+{
+ long i;
+ size_t len;
+ struct tapebuf *tpb = (struct tapebuf *) tapebuf;
+ struct s_spcl *spclpt = (struct s_spcl *) tapebuf;
+
+ for (i = 0; i < ntrec; i++)
+ ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
+ blkcnt = 0;
+ tbufptr = tapebuf;
+ /*
+ * For a pipe or file, read in the first record. For a tape, read
+ * the first block.
+ */
+ len = magtapein ? ntrec * TP_BSIZE : TP_BSIZE;
+
+ if (read_a_block(mt, tapebuf, len, &i) <= 0)
+ errx(1, "Tape read error on first record");
+
+ /*
+ * If the input is from a file or a pipe, we read TP_BSIZE
+ * bytes looking for a dump header. If the dump is compressed
+ * we need to read in the rest of the block, as determined
+ * by c_ntrec in the dump header. The first block of the
+ * dump is not compressed and does not have a prefix.
+ */
+ if (!magtapein) {
+ if (spclpt->c_type == TS_TAPE
+ && spclpt->c_flags & DR_COMPRESSED) {
+ /* It's a compressed dump file, read in the */
+ /* rest of the block based on spclpt->c_ntrec. */
+ if (spclpt->c_ntrec > ntrec)
+ errx(1, "Tape blocksize is too large, use "
+ "\'-b %d\' ", spclpt->c_ntrec);
+ ntrec = spclpt->c_ntrec;
+ len = (ntrec - 1) * TP_BSIZE;
+ zflag = 1;
+ }
+ else {
+ /* read in the rest of the block based on bufsize */
+ len = bufsize - TP_BSIZE;
+ }
+ if (read_a_block(mt, tapebuf+TP_BSIZE, len, &i) < 0
+ || (i != len && i % TP_BSIZE != 0))
+ errx(1,"Error reading dump file header");
+ tbufptr = tapebuf;
+ numtrec = ntrec;
+ Vprintf(stdout, "Input block size is %ld\n", ntrec);
+ return;
+ } /* if (!magtapein) */
+
+ /*
+ * If the input is a tape, we tried to read ntrec * TP_BSIZE bytes.
+ * If the value of ntrec is too large, we read less than
+ * what we asked for; adjust the value of ntrec and test for
+ * a compressed dump tape.
+ */
+
if (i % TP_BSIZE != 0) {
- fprintf(stderr, "Tape block size (%d) %s (%d)\n",
- i, "is not a multiple of dump block size", TP_BSIZE);
- done(1);
+ /* may be old format compressed dump tape with a prefix */
+ spclpt = (struct s_spcl *) tpb->buf;
+ if (i % TP_BSIZE == PREFIXSIZE
+ && tpb->compressed == 0
+ && spclpt->c_type == TS_TAPE
+ && spclpt->c_flags & DR_COMPRESSED) {
+ zflag = 1;
+ tbufptr = tpb->buf;
+ if (tpb->length > bufsize)
+ errx(1, "Tape blocksize is too large, use "
+ "\'-b %d\' ", tpb->length / TP_BSIZE);
+ }
+ else
+ errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
+ i, TP_BSIZE);
}
ntrec = i / TP_BSIZE;
+ if (spclpt->c_type == TS_TAPE) {
+ if (spclpt->c_flags & DR_COMPRESSED)
+ zflag = 1;
+ if (spclpt->c_ntrec > ntrec)
+ errx(1, "Tape blocksize is too large, use "
+ "\'-b %d\' ", spclpt->c_ntrec);
+ }
numtrec = ntrec;
- vprintf(stdout, "Tape block size is %d\n", ntrec);
+ Vprintf(stdout, "Tape block size is %ld\n", ntrec);
+}
+
+/*
+ * Read a block of data handling all of the messy details.
+ */
+static int read_a_block(int fd, char *buf, size_t len, long *lengthread)
+{
+ long i = 1, size;
+
+ size = len;
+ while (size > 0) {
+#ifdef RRESTORE
+ if (host)
+ i = rmtread(buf, size);
+ else
+#endif
+ i = read(fd, buf, size);
+
+ if (i <= 0)
+ break; /* EOD or error */
+ size -= i;
+ if (magtapein)
+ break; /* block at a time for mt */
+ buf += i;
+ }
+ *lengthread = len - size;
+ return i;
}
void
-closemt()
+closemt(void)
{
if (mt < 0)
(void) close(mt);
}
+static void
+setmagtapein(void) {
+ struct mtget mt_stat;
+ static int done = 0;
+ if (done)
+ return;
+ done = 1;
+ if (!pipein) {
+ /* need to know if input is really from a tape */
+#ifdef RRESTORE
+ if (host)
+ magtapein = !lflag;
+ else
+#endif
+ magtapein = ioctl(mt, MTIOCGET, (char *)&mt_stat) == 0;
+ }
+
+ Vprintf(stdout,"Input is from %s\n",
+ magtapein ? "tape" :
+ Vflag ? "multi-volume (no tape)" : "file/pipe");
+}
+
/*
* Read the next block from the tape.
* Check to see if it is one of several vintage headers.
* If it is not any valid header, return an error.
*/
static int
-gethead(buf)
- struct s_spcl *buf;
+gethead(struct s_spcl *buf)
{
- long i;
+ int32_t i;
union {
quad_t qval;
- long val[2];
+ int32_t val[2];
} qcvt;
union u_ospcl {
char dummy[TP_BSIZE];
struct s_ospcl {
- long c_type;
- long c_date;
- long c_ddate;
- long c_volume;
- long c_tapea;
- u_short c_inumber;
- long c_magic;
- long c_checksum;
+ int32_t c_type;
+ int32_t c_date;
+ int32_t c_ddate;
+ int32_t c_volume;
+ int32_t c_tapea;
+ u_int16_t c_inumber;
+ int32_t c_magic;
+ int32_t c_checksum;
struct odinode {
- unsigned short odi_mode;
- u_short odi_nlink;
- u_short odi_uid;
- u_short odi_gid;
- long odi_size;
- long odi_rdev;
+ u_int16_t odi_mode;
+ u_int16_t odi_nlink;
+ u_int16_t odi_uid;
+ u_int16_t odi_gid;
+ int32_t odi_size;
+ int32_t odi_rdev;
char odi_addr[36];
- long odi_atime;
- long odi_mtime;
- long odi_ctime;
+ int32_t odi_atime;
+ int32_t odi_mtime;
+ int32_t odi_ctime;
} c_dinode;
- long c_count;
- char c_addr[256];
+ int32_t c_count;
+ char c_fill[256];
} s_ospcl;
} u_ospcl;
if (!cvtflag) {
readtape((char *)buf);
if (buf->c_magic != NFS_MAGIC) {
- if (swabl(buf->c_magic) != NFS_MAGIC)
+ if (swabi(buf->c_magic) != NFS_MAGIC)
return (FAIL);
if (!Bcvt) {
- vprintf(stdout, "Note: Doing Byte swapping\n");
+ Vprintf(stdout, "Note: Doing Byte swapping\n");
Bcvt = 1;
}
}
if (checksum((int *)buf) == FAIL)
return (FAIL);
if (Bcvt)
- swabst((u_char *)"8l4s31l", (u_char *)buf);
+ swabst((u_char *)"8i4s31i528bi192b2i", (u_char *)buf);
goto good;
}
readtape((char *)(&u_ospcl.s_ospcl));
buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime;
#endif /* __linux__ */
buf->c_count = u_ospcl.s_ospcl.c_count;
- memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256);
+ memmove(buf->c_addr, u_ospcl.s_ospcl.c_fill, (long)256);
if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC ||
checksum((int *)(&u_ospcl.s_ospcl)) == FAIL)
return(FAIL);
qcvt.val[0] = i;
buf->c_dinode.di_size = qcvt.qval;
}
+ readmapflag = 0;
switch (buf->c_type) {
*/
buf->c_inumber = 0;
buf->c_dinode.di_size = buf->c_count * TP_BSIZE;
- for (i = 0; i < buf->c_count; i++)
- buf->c_addr[i]++;
+ if (buf->c_count > TP_NINDIR)
+ readmapflag = 1;
+ else
+ for (i = 0; i < buf->c_count; i++)
+ buf->c_addr[i]++;
break;
case TS_TAPE:
/* fall through */
case TS_END:
buf->c_inumber = 0;
+ if (buf->c_flags & DR_INODEINFO) {
+ memcpy(volinfo, buf->c_inos, TP_NINOS * sizeof(dump_ino_t));
+ if (Bcvt)
+ swabst((u_char *)"128i", (u_char *)volinfo);
+ }
break;
case TS_INODE:
break;
}
/*
- * If we are restoring a filesystem with old format inodes,
+ * If we are restoring a filesystem with old format inodes,
* copy the uid/gid to the new location.
*/
if (oldinofmt) {
* Check that a header is where it belongs and predict the next header
*/
static void
-accthdr(header)
- struct s_spcl *header;
+accthdr(struct s_spcl *header)
{
- static ino_t previno = 0x7fffffff;
+ static dump_ino_t previno = 0x7fffffff;
static int prevtype;
static long predict;
long blks, i;
fprintf(stderr, "Used inodes map header");
break;
case TS_INODE:
- fprintf(stderr, "File header, ino %d", previno);
+ fprintf(stderr, "File header, ino %lu", (unsigned long)previno);
break;
case TS_ADDR:
- fprintf(stderr, "File continuation header, ino %d", previno);
+ fprintf(stderr, "File continuation header, ino %ld", (long)previno);
break;
case TS_END:
fprintf(stderr, "End of tape header");
break;
}
if (predict != blksread - 1)
- fprintf(stderr, "; predicted %d blocks, got %d blocks",
+ fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
predict, blksread - 1);
fprintf(stderr, "\n");
newcalc:
blks = 0;
if (header->c_type != TS_END)
for (i = 0; i < header->c_count; i++)
- if (header->c_addr[i] != 0)
+ if (readmapflag || header->c_addr[i] != 0)
blks++;
predict = blks;
blksread = 0;
* Complain if had to skip, and complain is set.
*/
static void
-findinode(header)
- struct s_spcl *header;
+findinode(struct s_spcl *header)
{
static long skipcnt = 0;
long i;
}
} while (header->c_type == TS_ADDR);
if (skipcnt > 0)
- fprintf(stderr, "resync restore, skipped %d blocks\n", skipcnt);
+#ifdef USE_QFA
+ if (!noresyncmesg)
+#endif
+ fprintf(stderr, "resync restore, skipped %ld blocks\n",
+ skipcnt);
skipcnt = 0;
}
static int
-checksum(buf)
- register int *buf;
+checksum(int *buf)
{
- register int i, j;
+ int i, j;
j = sizeof(union u_spcl) / sizeof(int);
i = 0;
} else {
/* What happens if we want to read restore tapes
for a 16bit int machine??? */
- do
- i += swabl(*buf++);
+ do
+ i += swabi(*buf++);
while (--j);
}
-
+
if (i != CHECKSUM) {
- fprintf(stderr, "Checksum error %o, inode %d file %s\n", i,
- curfile.ino, curfile.name);
+ fprintf(stderr, "Checksum error %o, inode %lu file %s\n", i,
+ (unsigned long)curfile.ino, curfile.name);
return(FAIL);
}
return(GOOD);
}
#ifdef RRESTORE
-#if __STDC__
+#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
void
-#if __STDC__
+#ifdef __STDC__
msg(const char *fmt, ...)
#else
msg(fmt, va_alist)
#endif
{
va_list ap;
-#if __STDC__
+#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif /* RRESTORE */
static u_char *
-swabshort(sp, n)
- register u_char *sp;
- register int n;
+swab16(u_char *sp, int n)
{
char c;
}
static u_char *
-swablong(sp, n)
- register u_char *sp;
- register int n;
+swab32(u_char *sp, int n)
{
char c;
while (--n >= 0) {
c = sp[0]; sp[0] = sp[3]; sp[3] = c;
- c = sp[2]; sp[2] = sp[1]; sp[1] = c;
+ c = sp[1]; sp[1] = sp[2]; sp[2] = c;
sp += 4;
}
return (sp);
}
+static u_char *
+swab64(u_char *sp, int n)
+{
+ char c;
+
+ while (--n >= 0) {
+ c = sp[0]; sp[0] = sp[7]; sp[7] = c;
+ c = sp[1]; sp[1] = sp[6]; sp[6] = c;
+ c = sp[2]; sp[2] = sp[5]; sp[5] = c;
+ c = sp[3]; sp[3] = sp[4]; sp[4] = c;
+ sp += 8;
+ }
+ return (sp);
+}
+
void
-swabst(cp, sp)
- register u_char *cp, *sp;
+swabst(u_char *cp, u_char *sp)
{
int n = 0;
case '5': case '6': case '7': case '8': case '9':
n = (n * 10) + (*cp++ - '0');
continue;
-
+
case 's': case 'w': case 'h':
if (n == 0)
n = 1;
- sp = swabshort(sp, n);
+ sp = swab16(sp, n);
+ break;
+
+ case 'i':
+ if (n == 0)
+ n = 1;
+ sp = swab32(sp, n);
break;
case 'l':
if (n == 0)
n = 1;
- sp = swablong(sp, n);
+ sp = swab64(sp, n);
break;
default: /* Any other character, like 'b' counts as byte. */
}
}
+static u_int
+swabi(u_int x)
+{
+ swabst((u_char *)"i", (u_char *)&x);
+ return (x);
+}
+
+#if 0
static u_long
-swabl(x)
- u_long x;
+swabl(u_long x)
{
swabst((u_char *)"l", (u_char *)&x);
return (x);
}
+#endif
+
+#ifdef USE_QFA
+/*
+ * get the current position of the tape
+ */
+int
+GetTapePos(long long *pos)
+{
+ int err = 0;
+
+#ifdef RDUMP
+ if (host) {
+ *pos = (long long) rmtseek(0, SEEK_CUR);
+ err = *pos < 0;
+ }
+ else
+#endif
+ {
+ if (magtapein) {
+ long mtpos;
+ *pos = 0;
+ err = (ioctl(mt, MTIOCPOS, &mtpos) < 0);
+ *pos = (long long)mtpos;
+ }
+ else {
+ *pos = LSEEK(mt, 0, SEEK_CUR);
+ err = (*pos < 0);
+ }
+ }
+ if (err) {
+ err = errno;
+ fprintf(stdout, "[%ld] error: %d (getting tapepos: %lld)\n",
+ (unsigned long)getpid(), err, *pos);
+ return err;
+ }
+ return err;
+}
+
+typedef struct mt_pos {
+ short mt_op;
+ int mt_count;
+} MTPosRec, *MTPosPtr;
+
+/*
+ * go to specified position on tape
+ */
+int
+GotoTapePos(long long pos)
+{
+ int err = 0;
+
+#ifdef RDUMP
+ if (host)
+ err = (rmtseek((long)pos, SEEK_SET) < 0);
+ else
+#endif
+ {
+ if (magtapein) {
+ struct mt_pos buf;
+ buf.mt_op = MTSEEK;
+ buf.mt_count = (int) pos;
+ err = (ioctl(mt, MTIOCTOP, &buf) < 0);
+ }
+ else {
+ pos = LSEEK(mt, pos, SEEK_SET);
+ err = (pos < 0);
+ }
+ }
+ if (err) {
+ err = errno;
+ fprintf(stdout, "[%ld] error: %d (setting tapepos: %lld)\n",
+ (unsigned long)getpid(), err, pos);
+ return err;
+ }
+ return err;
+}
+
+/*
+ * read next data from tape to re-sync
+ */
+void
+ReReadFromTape(void)
+{
+ FLUSHTAPEBUF();
+ noresyncmesg = 1;
+ if (gethead(&spcl) == FAIL) {
+#ifdef DEBUG_QFA
+ fprintf(stdout, "DEBUG 1 gethead failed\n");
+#endif
+ }
+ findinode(&spcl);
+ noresyncmesg = 0;
+}
+#endif /* USE_QFA */
+
+void
+RequestVol(long tnum)
+{
+ FLUSHTAPEBUF();
+ getvol(tnum);
+}