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Annotation of 3BSD/cmd/reset.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * reset - set the teletype mode bits to be sensible
                      3:  *
                      4:  * Kurt Shoens
                      5:  *
                      6:  * Very useful after crapping out in raw.
                      7:  * Modified by Mark Horton to know about tchars
                      8:  * and to not mess with peoples chars unless they are null.
                      9:  */
                     10: #include <sgtty.h>
                     11: #define chk(val, dft) (val==0 ? dft : val)
                     12: 
                     13: main()
                     14: {
                     15:        struct sgttyb buf;
                     16:        struct tchars tbuf;
                     17: 
                     18:        gtty(2, &buf);
                     19:        ioctl(2, TIOCGETC, &tbuf);
                     20:        buf.sg_flags &= ~(RAW|CBREAK|VTDELAY|ALLDELAY);
                     21:        buf.sg_flags |= XTABS|ECHO|CRMOD|ANYP;
                     22:        buf.sg_erase = chk(buf.sg_erase, '\08');        /* ^H */
                     23:        buf.sg_kill = chk(buf.sg_kill, '\30');          /* ^X */
                     24:        tbuf.t_intrc = chk(tbuf.t_intrc, '\177');       /* ^? */
                     25:        tbuf.t_quitc = chk(tbuf.t_quitc, '\34');        /* ^\ */
                     26:        tbuf.t_startc = chk(tbuf.t_startc, '\22');      /* ^Q */
                     27:        tbuf.t_stopc = chk(tbuf.t_stopc, '\24');        /* ^S */
                     28:        tbuf.t_eofc = chk(tbuf.t_eofc, '\4');           /* ^D */
                     29:        /* brkc is left alone */
                     30:        ioctl(2, TIOCSETN, &buf);
                     31:        ioctl(2, TIOCSETC, &tbuf);
                     32: }

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