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865
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1 struct sgbuf { /* structure for 'getstat()' and 'setstat()' */
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2 char sg_class, /* device class */
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3
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4 /* The following are for an SCF type device. See below for
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5 * structure member definitions for an RBF device.
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6 */
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7 sg_case, /* 0 = upper and lower cases, 1 = upper case only */
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8 sg_backsp, /* 0 = BSE, 1 = BSE-SP-BSE */
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9 sg_delete, /* delete sequence */
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10 sg_echo, /* 0 = no echo */
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11 sg_alf, /* 0 = no auto line feed */
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12 sg_nulls, /* end of line null count */
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13 sg_pause, /* 0 = no end of page pause */
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14 sg_page, /* lines per page */
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15 sg_bspch, /* backspace character */
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16 sg_dlnch, /* delete line character */
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17 sg_eorch, /* end of record character */
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18 sg_eofch, /* end of file character */
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19 sg_rlnch, /* reprint line character */
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20 sg_dulnch, /* duplicate last line character */
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21 sg_psch, /* pause character */
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22 sg_kbich, /* keyboard interrupt character */
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23 sg_kbach, /* keyboard abort character */
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24 sg_bsech, /* backspace echo character */
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25 sg_bellch, /* line overflow character (bell) */
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26 sg_parity, /* device initialisation (parity) */
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27 sg_baud; /* baud rate */
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28 int sg_d2p, /* offset to second device name string */
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29 sg_stn; /* offset to status routine name */
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30 char sg_err; /* most recent error status */
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31 char sg_spare[5]; /* spare bytes - necessary for correct sizing */
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32 };
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33
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34 /* the following is a structure definition to set the names, types
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35 * and offsets of structure members which are applicable to an RBF
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36 * type device file.
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37 */
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38 struct {
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39 char sg_class, /* device class - repeated from above */
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40 sg_drive, /* drive number */
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41 sg_step, /* step rate */
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42 sg_dtype, /* device type */
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43 sg_dense; /* density capability */
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44 int sg_cyls; /* number of cylinders (tracks) */
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45 char sg_sides, /* number of sides */
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46 sg_verify; /* 0 = verify on writes */
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47 int sg_spt, /* default sectors per track */
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48 sg_spt0; /* ditto track 0 */
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49 char sg_intlv, /* sector interleave factor */
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50 sg_salloc, /* segment allocation size */
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51 sg_att, /* file attributes */
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52 sg_fdpsn[3], /* file descriptor PSN */
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53 sg_dipsn[3]; /* file's directory PSN */
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54 long sg_dirptr; /* directory entry pointer */
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55 int sg_dvt; /* address of device table entry */
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56 };
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