Initial revision0_29alpha2

1 files changed, 98 insertions, 0 deletions

diff --git a/miscutils/mt.c b/miscutils/mt.c
new file mode 100644
index 000000000..7d75fbd3d
--- /dev/null
+++ b/miscutils/mt.c
@@ -0,0 +1,98 @@
+#include "internal.h"
+#include <stdio.h>
+#include <sys/mtio.h>
+#include <sys/fcntl.h>
+
+const char      mt_usage[] = "mt [-f device] opcode value\n";
+
+struct mt_opcodes {
+        char *  name;
+        short   value;
+};
+
+/* missing: eod/seod, stoptions, stwrthreshold, densities */
+static const struct mt_opcodes  opcodes[] = {
+        { "bsf",        MTBSF },
+        { "bsfm",       MTBSFM },
+        { "bsr",        MTBSR },
+        { "bss",        MTBSS },
+        { "datacompression",    MTCOMPRESSION },
+        { "eom",        MTEOM },
+        { "erase",      MTERASE },
+        { "fsf",        MTFSF },
+        { "fsfm",       MTFSFM },
+        { "fsr",        MTFSR },
+        { "fss",        MTFSS },
+        { "load",       MTLOAD },
+        { "lock",       MTLOCK },
+        { "mkpart",     MTMKPART },
+        { "nop",        MTNOP },
+        { "offline",MTOFFL },
+        { "rewoffline",MTOFFL },
+        { "ras1",       MTRAS1 },
+        { "ras2",       MTRAS2 },
+        { "ras3",       MTRAS3 },
+        { "reset",      MTRESET },
+        { "retension",  MTRETEN },
+        { "rew",        MTREW },
+        { "seek",       MTSEEK },
+        { "setblk",     MTSETBLK },
+        { "setdensity", MTSETDENSITY },
+        { "drvbuffer",  MTSETDRVBUFFER },
+        { "setpart",    MTSETPART },
+        { "tell",       MTTELL },
+        { "wset",       MTWSM },
+        { "unload",     MTUNLOAD },
+        { "unlock",     MTUNLOCK },
+        { "eof",        MTWEOF },
+        { "weof",       MTWEOF },
+        { 0,                    0 }
+};
+
+extern int
+mt_main(struct FileInfo * i, int argc, char * * argv)
+{
+        const char *                            file = "/dev/tape";
+        const struct mt_opcodes *       code = opcodes;
+        struct mtop                                     op;
+        int                                                     fd;
+        
+        if ( strcmp(argv[1], "-f") == 0 ) {
+                if ( argc < 4 ) {
+                        usage(mt_usage);
+                        return 1;
+                }
+                file = argv[2];
+                argv += 2;
+                argc -= 2;
+        }
+
+        while ( code->name != 0 ) {
+                if ( strcmp(code->name, argv[1]) == 0 )
+                        break;
+                code++;
+        }
+
+        if ( code->name == 0 ) {
+                fprintf(stderr, "mt: unrecognized opcode %s.\n", argv[1]);
+                return 1;
+        }
+
+        op.mt_op = code->value;
+        if ( argc >= 3 )
+                op.mt_count = atoi(argv[2]); 
+        else
+                op.mt_count = 1; /* One, not zero, right? */
+
+        if ( (fd = open(file, O_RDONLY, 0)) < 0 ) {
+                name_and_error(file);
+                return 1;
+        }
+
+        if ( ioctl(fd, MTIOCTOP, &op) != 0 ) {
+                name_and_error(file);
+                return 1;
+        }
+
+        return 0;
+}