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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  * 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  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 #ifndef _TERMIOS_H_
     29 #define _TERMIOS_H_
     30 
     31 #include <sys/cdefs.h>
     32 #include <sys/ioctl.h>
     33 #include <sys/types.h>
     34 #include <stdint.h>
     35 #include <linux/termios.h>
     36 
     37 __BEGIN_DECLS
     38 
     39 /* Redefine these to match their ioctl number */
     40 #undef  TCSANOW
     41 #define TCSANOW    TCSETS
     42 
     43 #undef  TCSADRAIN
     44 #define TCSADRAIN  TCSETSW
     45 
     46 #undef  TCSAFLUSH
     47 #define TCSAFLUSH  TCSETSF
     48 
     49 static __inline__ int tcgetattr(int fd, struct termios *s)
     50 {
     51     return ioctl(fd, TCGETS, s);
     52 }
     53 
     54 static __inline__ int tcsetattr(int fd, int __opt, const struct termios *s)
     55 {
     56     return ioctl(fd, __opt, (void *)s);
     57 }
     58 
     59 static __inline__ int tcflow(int fd, int action)
     60 {
     61     return ioctl(fd, TCXONC, (void *)(intptr_t)action);
     62 }
     63 
     64 static __inline__ int tcflush(int fd, int __queue)
     65 {
     66     return ioctl(fd, TCFLSH, (void *)(intptr_t)__queue);
     67 }
     68 
     69 static __inline__ int tcdrain(int fd)
     70 {
     71     return ioctl(fd, TCSBRK, (void *)(intptr_t)1);
     72 }
     73 
     74 static __inline__ pid_t tcgetsid(int fd)
     75 {
     76     pid_t _pid;
     77     return ioctl(fd, TIOCGSID, &_pid) ? (pid_t)-1 : _pid;
     78 }
     79 
     80 static __inline__ int tcsendbreak(int fd, int __duration)
     81 {
     82     return ioctl(fd, TCSBRKP, (void *)(uintptr_t)__duration);
     83 }
     84 
     85 static __inline__ speed_t cfgetospeed(const struct termios *s)
     86 {
     87     return (speed_t)(s->c_cflag & CBAUD);
     88 }
     89 
     90 static __inline__ int cfsetospeed(struct termios *s, speed_t  speed)
     91 {
     92     s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
     93     return 0;
     94 }
     95 
     96 static __inline__ speed_t cfgetispeed(const struct termios *s)
     97 {
     98     return (speed_t)(s->c_cflag & CBAUD);
     99 }
    100 
    101 static __inline__ int cfsetispeed(struct termios *s, speed_t  speed)
    102 {
    103     s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
    104   return 0;
    105 }
    106 
    107 static __inline__ void cfmakeraw(struct termios *s)
    108 {
    109     s->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
    110     s->c_oflag &= ~OPOST;
    111     s->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
    112     s->c_cflag &= ~(CSIZE|PARENB);
    113     s->c_cflag |= CS8;
    114 }
    115 
    116 __END_DECLS
    117 
    118 #endif /* _TERMIOS_H_ */
    119