2.9BSD - /usr/src/lib/libU77/ttynam_.c

   1: /*
   2: char id_ttynam[] = "@(#)ttynam_.c	1.1";
   3:  *
   4:  * Return name of tty port associated with lunit
   5:  *
   6:  * calling sequence:
   7:  *	character*19 string, ttynam
   8:  * 	string = ttynam (lunit)
   9:  * where:
  10:  *	the character string will be filled with the name of
  11:  *	the port, preceded with '/dev/', and blank padded.
  12:  *	(19 is the max length ever required)
  13:  */
  14: 
  15: #include    "../libI77/fiodefs.h"
  16: 
  17: extern unit units[];
  18: 
  19: ttynam_(name, strlen, lu)
  20: char *name; ftnlen strlen; ftnint *lu;
  21: {
  22:     char *t = NULL, *ttyname();
  23: 
  24:     if (0 <= *lu && *lu < MXUNIT && units[*lu].ufd)
  25:         t = ttyname(fileno(units[*lu].ufd));
  26:     if (t == NULL)
  27:         t = "";
  28:     b_char(t, name, strlen);
  29: }

Defined functions