Return to tcflow.c CVS log

Up to [local] / prex-old / usr / lib / libc / termios

Annotation of prex-old/usr/lib/libc/termios/tcflow.c, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 1989, 1993
                      3:  *     The Regents of the University of California.  All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the University nor the names of its contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #include <sys/types.h>
                     31: #include <sys/ioctl.h>
                     32: #include <sys/time.h>
                     33: #include <errno.h>
                     34: #include <termios.h>
                     35: #include <unistd.h>
                     36:
                     37: int
                     38: tcflow(fd, action)
                     39:        int fd, action;
                     40: {
                     41:        struct termios term;
                     42:        u_char c;
                     43:
                     44:        switch (action) {
                     45:        case TCOOFF:
                     46:                return (ioctl(fd, TIOCSTOP, 0));
                     47:        case TCOON:
                     48:                return (ioctl(fd, TIOCSTART, 0));
                     49:        case TCION:
                     50:        case TCIOFF:
                     51:                if (tcgetattr(fd, &term) == -1)
                     52:                        return (-1);
                     53:                c = term.c_cc[action == TCIOFF ? VSTOP : VSTART];
                     54:                if (c != _POSIX_VDISABLE && write(fd, &c, sizeof(c)) == -1)
                     55:                        return (-1);
                     56:                return (0);
                     57:        default:
                     58:                errno = EINVAL;
                     59:                return (-1);
                     60:        }
                     61:        /* NOTREACHED */
                     62: }