Implement the Sun extended rmt protocol.

[dump.git] / rmt / rmt.c

diff --git a/rmt/rmt.c b/rmt/rmt.c
index e23d0a3f350c860a6c15efe68230d2058f2c933e..bde137dcd17b101e14d9094c920a135678ca857b 100644 (file)
--- a/rmt/rmt.c
+++ b/rmt/rmt.c
@@ -41,7 +41,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-       "$Id: rmt.c,v 1.14 2001/04/27 15:22:47 stelian Exp $";
+       "$Id: rmt.c,v 1.15 2001/05/26 11:11:16 stelian Exp $";
 #endif /* not linux */
 
 /*
@@ -78,6 +78,30 @@ FILE *debug;
 #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
+ */
+#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 *));
@@ -175,7 +199,10 @@ top:
                getstring(op);
                getstring(count);
                DEBUG2("rmtd: I %s %s\n", op, count);
-               { struct mtop mtop;
+               if (atoi(op) == RMTI_VERSION) {
+                       rval = RMT_VERSION;
+               } else { 
+                 struct mtop mtop;
                  mtop.mt_op = atoi(op);
                  mtop.mt_count = atoi(count);
                  if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
@@ -184,6 +211,56 @@ top:
                }
                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;
@@ -196,6 +273,49 @@ top:
                  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);