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Annotation of coherent/g/usr/bin/script/tty_mode.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * File:       tty_mode.c
                      3:  *
                      4:  * Purpose:    transfer modes between tty devices
                      5:  *
                      6:  * $Log:       tty_mode.c,v $
                      7:  * Revision 1.2  92/06/15  10:04:58  bin
                      8:  * *** empty log message ***
                      9:  * 
                     10:  */
                     11: 
                     12: /*
                     13:  * Includes.
                     14:  */
                     15: #include <sgtty.h>
                     16: 
                     17: /*
                     18:  * Definitions.
                     19:  *     Constants.
                     20:  *     Macros with argument lists.
                     21:  *     Typedefs.
                     22:  *     Enums.
                     23:  */
                     24: typedef unsigned char uchar;
                     25: typedef unsigned int  uint;
                     26: typedef unsigned long ulong;
                     27: 
                     28: /*
                     29:  * Functions.
                     30:  *     Import Functions.
                     31:  *     Export Functions.
                     32:  *     Local Functions.
                     33:  */
                     34: int tty_getmode();
                     35: int tty_setmode();
                     36: 
                     37: /*
                     38:  * Global Data.
                     39:  *     Import Variables.
                     40:  *     Export Variables.
                     41:  *     Local Variables.
                     42:  */
                     43: static struct sgttyb   tty_sgttyb;
                     44: static struct tchars   tty_tchars;
                     45: 
                     46: /*
                     47:  * tty_getmode()
                     48:  *
                     49:  * Save modes for the given file descriptor.
                     50:  */
                     51: int
                     52: tty_getmode(fd)
                     53: int fd;
                     54: {
                     55:        if (ioctl(fd, TIOCGETP, &tty_sgttyb) < 0)
                     56:                return -1;
                     57:        if (ioctl(fd, TIOCGETC, &tty_tchars) < 0)
                     58:                return -1;
                     59:        return 0;
                     60: }
                     61: 
                     62: /*
                     63:  * tty_setmode()
                     64:  *
                     65:  * Restore modes to the given file descriptor.
                     66:  */
                     67: int
                     68: tty_setmode(fd)
                     69: int fd;
                     70: {
                     71:        if (ioctl(fd, TIOCSETP, &tty_sgttyb) < 0)
                     72:                return -1;
                     73:        if (ioctl(fd, TIOCSETC, &tty_tchars) < 0)
                     74:                return -1;
                     75:        return 0;
                     76: }

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