+#ifdef sunos
+extern int fdsmtc;
+
+struct uscsi_cmd {
+ int uscsi_flags; /* read, write, etc. see below */
+ short uscsi_status; /* resulting status */
+ short uscsi_timeout; /* Command Timeout */
+ caddr_t uscsi_cdb; /* cdb to send to target */
+ caddr_t uscsi_bufaddr; /* i/o source/destination */
+ u_int uscsi_buflen; /* size of i/o to take place */
+ u_int uscsi_resid; /* resid from i/o operation */
+ u_char uscsi_cdblen; /* # of valid cdb bytes */
+ u_char uscsi_rqlen; /* size of uscsi_rqbuf */
+ u_char uscsi_rqstatus; /* status of request sense cmd */
+ u_char uscsi_rqresid; /* resid of request sense cmd */
+ caddr_t uscsi_rqbuf; /* request sense buffer */
+ void *uscsi_reserved_5; /* Reserved for Future Use */
+};
+
+#define CDB_GROUP0 6 /* 6-byte cdb's */
+#define CDB_GROUP1 10 /* 10-byte cdb's */
+#define CDB_GROUP2 10 /* 10-byte cdb's */
+#define CDB_GROUP3 0 /* reserved */
+#define CDB_GROUP4 16 /* 16-byte cdb's */
+#define CDB_GROUP5 12 /* 12-byte cdb's */
+#define CDB_GROUP6 0 /* reserved */
+#define CDB_GROUP7 0 /* reserved */
+
+#define USCSI_WRITE 0x00000 /* send data to device */
+#define USCSI_SILENT 0x00001 /* no error messages */
+#define USCSI_DIAGNOSE 0x00002 /* fail if any error occurs */
+#define USCSI_ISOLATE 0x00004 /* isolate from normal commands */
+#define USCSI_READ 0x00008 /* get data from device */
+#define USCSI_RESET 0x04000 /* Reset target */
+#define USCSI_RESET_ALL 0x08000 /* Reset all targets */
+#define USCSI_RQENABLE 0x10000 /* Enable Request Sense extensions */
+
+#define USCSIIOC (0x04 << 8)
+#define USCSICMD (USCSIIOC|201) /* user scsi command */
+
+#define USCSI_TIMEOUT 30
+#define USCSI_SHORT_TIMEOUT 900
+#define USCSI_LONG_TIMEOUT 14000
+
+#define B(s,i) ((unsigned char)((s) >> i))
+#define B1(s) ((unsigned char)(s))
+
+#define MSB4(s,v) *(s)=B(v,24),(s)[1]=B(v,16), (s)[2]=B(v,8), (s)[3]=B1(v)
+
+
+int
+GetTapePos(long long *pos)
+{
+ int err = 0;
+ struct uscsi_cmd scmd;
+ char buf[512];
+ char parm[512 * 8];
+ long lpos;
+
+ (void)memset((void *)buf, 0, sizeof(buf));
+ (void)memset((void *)&scmd, 0, sizeof(scmd));
+ scmd.uscsi_flags = USCSI_READ|USCSI_SILENT;
+ scmd.uscsi_timeout = USCSI_TIMEOUT;
+ scmd.uscsi_cdb = buf;
+ scmd.uscsi_cdblen = CDB_GROUP1;
+ buf[0] = 0x34; /* read position */
+ buf[1] = 0;
+ (void)memset((void *)parm, 0, 512);
+ scmd.uscsi_bufaddr = parm;
+ scmd.uscsi_buflen = 56;
+ if (ioctl(fdsmtc, USCSICMD, &scmd) == -1) {
+ err = errno;
+ return err;
+ }
+ (void)memcpy(&lpos, &parm[4], sizeof(long));
+ *pos = lpos;
+ return err;
+}
+
+int
+GotoTapePos(long long pos)
+{
+ int err = 0;
+ struct uscsi_cmd scmd;
+ char buf[512];
+ char parm[512 * 8];
+ long lpos = (long)pos;
+
+ (void)memset((void *)buf, 0, sizeof(buf));
+ (void)memset((void *)&scmd, 0, sizeof(scmd));
+ scmd.uscsi_flags = USCSI_WRITE|USCSI_SILENT;
+ scmd.uscsi_timeout = 360; /* 5 Minutes */
+ scmd.uscsi_cdb = buf;
+ scmd.uscsi_cdblen = CDB_GROUP1;
+ buf[0] = 0x2b; /* locate */
+ buf[1] = 0;
+ MSB4(&buf[3], lpos);
+ (void)memset((void *)parm, 0, 512);
+ scmd.uscsi_bufaddr = NULL;
+ scmd.uscsi_buflen = 0;
+ if (ioctl(fdsmtc, USCSICMD, &scmd) == -1) {
+ err = errno;
+ return err;
+ }
+ return err;
+}
+#endif
+
+#define LSEEK_GET_TAPEPOS 10
+#define LSEEK_GO2_TAPEPOS 11
+
+#ifdef __linux__
+typedef struct mt_pos {
+ short mt_op;
+ int mt_count;
+} MTPosRec, *MTPosPtr;
+
+