* Ported to Linux's Second Extended File System as part of the
* dump and restore backup suit
* Remy Card <card@Linux.EU.Org>, 1994-1997
- * Stelian Pop <pop@cybercable.fr>, 1999-2000
+ * Stelian Pop <stelian@popies.net>, 1999-2000
+ * Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
*/
/*
#ifndef lint
static const char rcsid[] =
- "$Id: rmt.c,v 1.9 2000/01/21 10:17:41 stelian Exp $";
+ "$Id: rmt.c,v 1.18 2002/04/15 11:57:29 stelian Exp $";
#endif /* not linux */
/*
* rmt
*/
+#include <config.h>
+#include <compatlfs.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/mtio.h>
#include <string.h>
#include <unistd.h>
-int tape = -1;
+static int tape = -1;
-char *record;
-int maxrecsize = -1;
+static char *record;
+static int maxrecsize = -1;
#define SSIZE 64
-char device[SSIZE];
-char count[SSIZE], filemode[SSIZE], pos[SSIZE], op[SSIZE];
+static char device[SSIZE];
+static char count[SSIZE], filemode[SSIZE], pos[SSIZE], op[SSIZE];
-char resp[BUFSIZ];
+static char resp[BUFSIZ];
-FILE *debug;
+static FILE *debug;
#define DEBUG(f) if (debug) fprintf(debug, f)
#define DEBUG1(f,a) if (debug) fprintf(debug, f, a)
#define DEBUG2(f,a1,a2) if (debug) fprintf(debug, f, a1, a2)
+/*
+ * Support for Sun's extended RMT protocol
+ * code originally written by Jörg Schilling <schilling@fokus.gmd.de>
+ * and relicensed by his permission from GPL to BSD for use in dump.
+ *
+ * rmt_version is 0 for regular clients (Linux included)
+ * rmt_version is 1 for extended clients (Sun especially). In this cas
+ * we support some extended commands (see below) and we remap
+ * the ioctl commands to the UNIX "standard", as per:
+ * ftp://ftp.fokus.gmd.de/pub/unix/star/README.mtio
+ *
+ * In order to use rmt version 1, a client must send "I-1\n0\n"
+ * before issuing the other I commands.
+ */
+static int rmt_version = 0;
+#define RMTI_VERSION -1
+#define RMT_VERSION 1
+
+/* Extended 'i' commands */
+#define RMTI_CACHE 0
+#define RMTI_NOCACHE 1
+#define RMTI_RETEN 2
+#define RMTI_ERASE 3
+#define RMTI_EOM 4
+#define RMTI_NBSF 5
+
+/* Extended 's' comands */
+#define MTS_TYPE 'T'
+#define MTS_DSREG 'D'
+#define MTS_ERREG 'E'
+#define MTS_RESID 'R'
+#define MTS_FILENO 'F'
+#define MTS_BLKNO 'B'
+#define MTS_FLAGS 'f'
+#define MTS_BF 'b'
+
char *checkbuf __P((char *, int));
void error __P((int));
void getstring __P((char *));
int rval = 0;
char c;
int n, i, cc;
+ unsigned long block = 0;
argc--, argv++;
if (argc > 0) {
* specify the permission bits; allow rw for everyone,
* as modified by the users umask
*/
- tape = open(device, atoi(filemode), 0666);
+ tape = OPEN(device, atoi(filemode), 0666);
if (tape < 0)
goto ioerror;
+ block = 0;
goto respond;
case 'C':
- DEBUG("rmtd: C\n");
+ DEBUG1("rmtd: C (%lu blocks)\n", block);
getstring(device); /* discard */
if (close(tape) < 0)
goto ioerror;
tape = -1;
+ block = 0;
goto respond;
case 'L':
getstring(count);
getstring(pos);
DEBUG2("rmtd: L %s %s\n", count, pos);
- rval = lseek(tape, (off_t)atol(count), atoi(pos));
+ rval = LSEEK(tape, (off_t)atol(count), atoi(pos));
if (rval < 0)
goto ioerror;
goto respond;
case 'W':
getstring(count);
n = atoi(count);
- DEBUG1("rmtd: W %s\n", count);
+ DEBUG2("rmtd: W %s (block = %lu)\n", count, block);
record = checkbuf(record, n);
for (i = 0; i < n; i += cc) {
cc = read(0, &record[i], n - i);
rval = write(tape, record, n);
if (rval < 0)
goto ioerror;
+ block += n >> 10;
goto respond;
case 'R':
getstring(count);
- DEBUG1("rmtd: R %s\n", count);
+ DEBUG2("rmtd: R %s (block %lu)\n", count, block);
n = atoi(count);
record = checkbuf(record, n);
rval = read(tape, record, n);
(void)sprintf(resp, "A%d\n", rval);
(void)write(1, resp, strlen(resp));
(void)write(1, record, rval);
+ block += n >> 10;
goto top;
case 'I':
getstring(op);
getstring(count);
DEBUG2("rmtd: I %s %s\n", op, count);
- { struct mtop mtop;
- mtop.mt_op = atoi(op);
- mtop.mt_count = atoi(count);
- if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
- goto ioerror;
- rval = mtop.mt_count;
+ if (atoi(op) == RMTI_VERSION) {
+ rval = RMT_VERSION;
+ rmt_version = 1;
+ }
+ else {
+ struct mtop mtop;
+ mtop.mt_op = -1;
+ if (rmt_version) {
+ /* rmt version 1, assume UNIX client */
+ switch (atoi(op)) {
+#ifdef MTWEOF
+ case 0:
+ mtop.mt_op = MTWEOF;
+ break;
+#endif
+#ifdef MTFSF
+ case 1:
+ mtop.mt_op = MTFSF;
+ break;
+#endif
+#ifdef MTBSF
+ case 2:
+ mtop.mt_op = MTBSF;
+ break;
+#endif
+#ifdef MTFSR
+ case 3:
+ mtop.mt_op = MTFSR;
+ break;
+#endif
+#ifdef MTBSR
+ case 4:
+ mtop.mt_op = MTBSR;
+ break;
+#endif
+#ifdef MTREW
+ case 5:
+ mtop.mt_op = MTREW;
+ break;
+#endif
+#ifdef MTOFFL
+ case 6:
+ mtop.mt_op = MTOFFL;
+ break;
+#endif
+#ifdef MTNOP
+ case 7:
+ mtop.mt_op = MTNOP;
+ break;
+#endif
+ }
+ if (mtop.mt_op == -1) {
+ errno = EINVAL;
+ goto ioerror;
+ }
+ }
+ else {
+ /* rmt version 0, assume linux client */
+ mtop.mt_op = atoi(op);
+ }
+ mtop.mt_count = atoi(count);
+ if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
+ goto ioerror;
+ rval = mtop.mt_count;
+ }
+ goto respond;
+
+ case 'i':
+ { struct mtop mtop;
+
+ getstring (op);
+ getstring (count);
+ DEBUG2 ("rmtd: i %s %s\n", op, count);
+ switch (atoi(op)) {
+#ifdef MTCACHE
+ case RMTI_CACHE:
+ mtop.mt_op = MTCACHE;
+ break;
+#endif
+#ifdef MTNOCACHE
+ case RMTI_NOCACHE:
+ mtop.mt_op = MTNOCACHE;
+ break;
+#endif
+#ifdef MTRETEN
+ case RMTI_RETEN:
+ mtop.mt_op = MTRETEN;
+ break;
+#endif
+#ifdef MTERASE
+ case RMTI_ERASE:
+ mtop.mt_op = MTERASE;
+ break;
+#endif
+#ifdef MTEOM
+ case RMTI_EOM:
+ mtop.mt_op = MTEOM;
+ break;
+#endif
+#ifdef MTNBSF
+ case RMTI_NBSF:
+ mtop.mt_op = MTNBSF;
+ break;
+#endif
+ default:
+ errno = EINVAL;
+ goto ioerror;
}
+ mtop.mt_count = atoi (count);
+ if (ioctl (tape, MTIOCTOP, (char *) &mtop) < 0)
+ goto ioerror;
+
+ rval = mtop.mt_count;
+
goto respond;
+ }
case 'S': /* status */
DEBUG("rmtd: S\n");
goto top;
}
+ case 's':
+ { char s;
+ struct mtget mtget;
+
+ if (read (0, &s, 1) != 1)
+ goto top;
+
+ if (ioctl (tape, MTIOCGET, (char *) &mtget) < 0)
+ goto ioerror;
+
+ switch (s) {
+ case MTS_TYPE:
+ rval = mtget.mt_type;
+ break;
+ case MTS_DSREG:
+ rval = mtget.mt_dsreg;
+ break;
+ case MTS_ERREG:
+ rval = mtget.mt_erreg;
+ break;
+ case MTS_RESID:
+ rval = mtget.mt_resid;
+ break;
+ case MTS_FILENO:
+ rval = mtget.mt_fileno;
+ break;
+ case MTS_BLKNO:
+ rval = mtget.mt_blkno;
+ break;
+ case MTS_FLAGS:
+ rval = mtget.mt_gstat;
+ break;
+ case MTS_BF:
+ rval = 0;
+ break;
+ default:
+ errno = EINVAL;
+ goto ioerror;
+ }
+
+ goto respond;
+ }
+
case 'V': /* version */
getstring(op);
DEBUG1("rmtd: V %s\n", op);
git.wh0rd.org / dump.git / blobdiff