X-Git-Url: https://git.wh0rd.org/?p=dump.git;a=blobdiff_plain;f=rmt%2Frmt.c;h=3bd6207406336874a960410a365583ecc597eed2;hp=f52c36ba8b602b38c632457a4cd9b5fc9adee081;hb=e2392789784483d5c142443388c1a0bf8508592b;hpb=c930abff2469b9571a22fc49d16f50f36f5a9301 diff --git a/rmt/rmt.c b/rmt/rmt.c index f52c36b..3bd6207 100644 --- a/rmt/rmt.c +++ b/rmt/rmt.c @@ -2,7 +2,8 @@ * Ported to Linux's Second Extended File System as part of the * dump and restore backup suit * Remy Card , 1994-1997 - * Stelian Pop , 1999 + * Stelian Pop , 1999-2000 + * Stelian Pop - Alcôve , 2000-2002 */ /* @@ -17,11 +18,7 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors + * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * @@ -40,12 +37,15 @@ #ifndef lint static const char rcsid[] = - "$Id: rmt.c,v 1.8 1999/11/21 02:24:47 tiniou Exp $"; + "$Id: rmt.c,v 1.25 2003/03/31 10:09:41 stelian Exp $"; #endif /* not linux */ /* * rmt */ +#include +#include +#include #include #include #include @@ -59,22 +59,58 @@ static const char rcsid[] = #include #include -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 + * 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 case + * 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 *)); @@ -82,9 +118,10 @@ void getstring __P((char *)); int main(int argc, char *argv[]) { - int rval = 0; + OFF_T rval = 0; char c; - int n, i, cc; + int n, i, cc, oflags; + unsigned long block = 0; argc--, argv++; if (argc > 0) { @@ -106,29 +143,43 @@ top: getstring(device); getstring(filemode); DEBUG2("rmtd: O %s %s\n", device, filemode); + /* + * Translate extended GNU syntax into its numeric platform equivalent + */ + oflags = rmtflags_toint(filemode); +#ifdef O_TEXT + /* + * Default to O_BINARY the client may not know that we need it. + */ + if ((oflags & O_TEXT) == 0) + oflags |= O_BINARY; +#endif + DEBUG2("rmtd: O %s %d\n", device, oflags); /* * XXX the rmt protocol does not provide a means to * specify the permission bits; allow rw for everyone, * as modified by the users umask */ - tape = open(device, atoi(filemode), 0666); + tape = OPEN(device, oflags, 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)atoll(count), atoi(pos)); if (rval < 0) goto ioerror; goto respond; @@ -136,7 +187,9 @@ top: case 'W': getstring(count); n = atoi(count); - DEBUG1("rmtd: W %s\n", count); + if (n < 1) + exit(2); + 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); @@ -148,46 +201,199 @@ top: 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); if (rval < 0) goto ioerror; - (void)sprintf(resp, "A%d\n", rval); + (void)sprintf(resp, "A%lld\n", (long long)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"); { struct mtget mtget; if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0) goto ioerror; rval = sizeof (mtget); - (void)sprintf(resp, "A%d\n", rval); + (void)sprintf(resp, "A%lld\n", (long long)rval); (void)write(1, resp, strlen(resp)); (void)write(1, (char *)&mtget, sizeof (mtget)); 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); @@ -199,8 +405,8 @@ top: exit(3); } respond: - DEBUG1("rmtd: A %d\n", rval); - (void)sprintf(resp, "A%d\n", rval); + DEBUG1("rmtd: A %lld\n", (long long)rval); + (void)sprintf(resp, "A%lld\n", (long long)rval); (void)write(1, resp, strlen(resp)); goto top; ioerror: @@ -213,7 +419,7 @@ void getstring(char *bp) int i; char *cp = bp; - for (i = 0; i < SSIZE; i++) { + for (i = 0; i < SSIZE - 1; i++) { if (read(0, cp+i, 1) != 1) exit(0); if (cp[i] == '\n')