1 /*
2 * Copyright (C) 2016 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
29 #ifndef _BITS_TERMIOS_INLINES_H_
30 #define _BITS_TERMIOS_INLINES_H_
31
32 #include <errno.h>
33 #include <sys/cdefs.h>
34 #include <sys/ioctl.h>
35 #include <sys/types.h>
36
37 #include <linux/termios.h>
38
39 #if !defined(__BIONIC_TERMIOS_INLINE)
40 #define __BIONIC_TERMIOS_INLINE static __inline
41 #endif
42
43 __BEGIN_DECLS
44
cfgetspeed(const struct termios * s)45 static __inline speed_t cfgetspeed(const struct termios* s) {
46 return __BIONIC_CAST(static_cast, speed_t, s->c_cflag & CBAUD);
47 }
48
cfgetispeed(const struct termios * s)49 __BIONIC_TERMIOS_INLINE speed_t cfgetispeed(const struct termios* s) {
50 return cfgetspeed(s);
51 }
52
cfgetospeed(const struct termios * s)53 __BIONIC_TERMIOS_INLINE speed_t cfgetospeed(const struct termios* s) {
54 return cfgetspeed(s);
55 }
56
cfmakeraw(struct termios * s)57 __BIONIC_TERMIOS_INLINE void cfmakeraw(struct termios* s) {
58 s->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
59 s->c_oflag &= ~OPOST;
60 s->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
61 s->c_cflag &= ~(CSIZE|PARENB);
62 s->c_cflag |= CS8;
63 }
64
cfsetspeed(struct termios * s,speed_t speed)65 __BIONIC_TERMIOS_INLINE int cfsetspeed(struct termios* s, speed_t speed) {
66 // TODO: check 'speed' is valid.
67 s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
68 return 0;
69 }
70
cfsetispeed(struct termios * s,speed_t speed)71 __BIONIC_TERMIOS_INLINE int cfsetispeed(struct termios* s, speed_t speed) {
72 return cfsetspeed(s, speed);
73 }
74
cfsetospeed(struct termios * s,speed_t speed)75 __BIONIC_TERMIOS_INLINE int cfsetospeed(struct termios* s, speed_t speed) {
76 return cfsetspeed(s, speed);
77 }
78
tcdrain(int fd)79 __BIONIC_TERMIOS_INLINE int tcdrain(int fd) {
80 // A non-zero argument to TCSBRK means "don't send a break".
81 // The drain is a side-effect of the ioctl!
82 return ioctl(fd, TCSBRK, __BIONIC_CAST(static_cast, unsigned long, 1));
83 }
84
tcflow(int fd,int action)85 __BIONIC_TERMIOS_INLINE int tcflow(int fd, int action) {
86 return ioctl(fd, TCXONC, __BIONIC_CAST(static_cast, unsigned long, action));
87 }
88
tcflush(int fd,int queue)89 __BIONIC_TERMIOS_INLINE int tcflush(int fd, int queue) {
90 return ioctl(fd, TCFLSH, __BIONIC_CAST(static_cast, unsigned long, queue));
91 }
92
tcgetattr(int fd,struct termios * s)93 __BIONIC_TERMIOS_INLINE int tcgetattr(int fd, struct termios* s) {
94 return ioctl(fd, TCGETS, s);
95 }
96
tcgetsid(int fd)97 __BIONIC_TERMIOS_INLINE pid_t tcgetsid(int fd) {
98 pid_t sid;
99 return (ioctl(fd, TIOCGSID, &sid) == -1) ? -1 : sid;
100 }
101
tcsendbreak(int fd,int duration)102 __BIONIC_TERMIOS_INLINE int tcsendbreak(int fd, int duration) {
103 return ioctl(fd, TCSBRKP, __BIONIC_CAST(static_cast, unsigned long, duration));
104 }
105
tcsetattr(int fd,int optional_actions,const struct termios * s)106 __BIONIC_TERMIOS_INLINE int tcsetattr(int fd, int optional_actions, const struct termios* s) {
107 int cmd;
108 switch (optional_actions) {
109 case TCSANOW: cmd = TCSETS; break;
110 case TCSADRAIN: cmd = TCSETSW; break;
111 case TCSAFLUSH: cmd = TCSETSF; break;
112 default: errno = EINVAL; return -1;
113 }
114 return ioctl(fd, cmd, s);
115 }
116
117 __END_DECLS
118
119 #endif
120