1 /*
2 * Copyright (C) 2015 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 _ANDROID_LEGACY_TERMIOS_INLINES_H_
30 #define _ANDROID_LEGACY_TERMIOS_INLINES_H_
31
32 #include <sys/cdefs.h>
33 #include <sys/ioctl.h>
34 #include <sys/types.h>
35
36 #include <linux/termios.h>
37
38 #if __ANDROID_API__ < __ANDROID_API_L__
39
40 __BEGIN_DECLS
41
tcgetattr(int fd,struct termios * s)42 static __inline int tcgetattr(int fd, struct termios *s) {
43 return ioctl(fd, TCGETS, s);
44 }
45
tcsetattr(int fd,int __opt,const struct termios * s)46 static __inline int tcsetattr(int fd, int __opt, const struct termios *s) {
47 return ioctl(fd, __opt, (void *)s);
48 }
49
tcflow(int fd,int action)50 static __inline int tcflow(int fd, int action) {
51 return ioctl(fd, TCXONC, (void *)(intptr_t)action);
52 }
53
tcflush(int fd,int __queue)54 static __inline int tcflush(int fd, int __queue) {
55 return ioctl(fd, TCFLSH, (void *)(intptr_t)__queue);
56 }
57
tcgetsid(int fd)58 static __inline pid_t tcgetsid(int fd) {
59 pid_t _pid;
60 return ioctl(fd, TIOCGSID, &_pid) ? (pid_t)-1 : _pid;
61 }
62
tcsendbreak(int fd,int __duration)63 static __inline int tcsendbreak(int fd, int __duration) {
64 return ioctl(fd, TCSBRKP, (void *)(uintptr_t)__duration);
65 }
66
cfgetospeed(const struct termios * s)67 static __inline speed_t cfgetospeed(const struct termios *s) {
68 return (speed_t)(s->c_cflag & CBAUD);
69 }
70
cfsetospeed(struct termios * s,speed_t speed)71 static __inline int cfsetospeed(struct termios *s, speed_t speed) {
72 s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
73 return 0;
74 }
75
cfgetispeed(const struct termios * s)76 static __inline speed_t cfgetispeed(const struct termios *s) {
77 return (speed_t)(s->c_cflag & CBAUD);
78 }
79
cfsetispeed(struct termios * s,speed_t speed)80 static __inline int cfsetispeed(struct termios *s, speed_t speed) {
81 s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
82 return 0;
83 }
84
cfmakeraw(struct termios * s)85 static __inline void cfmakeraw(struct termios *s) {
86 s->c_iflag &=
87 ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
88 s->c_oflag &= ~OPOST;
89 s->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
90 s->c_cflag &= ~(CSIZE | PARENB);
91 s->c_cflag |= CS8;
92 }
93
cfsetspeed(struct termios * s,speed_t speed)94 static __inline int cfsetspeed(struct termios* s, speed_t speed) {
95 // TODO: check 'speed' is valid.
96 s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
97 return 0;
98 }
99
tcdrain(int fd)100 static __inline int tcdrain(int fd) {
101 // A non-zero argument to TCSBRK means "don't send a break".
102 // The drain is a side-effect of the ioctl!
103 return ioctl(fd, TCSBRK, __BIONIC_CAST(static_cast, unsigned long, 1));
104 }
105
106 __END_DECLS
107
108 #endif
109 #endif /* _ANDROID_LEGACY_TERMIOS_INLINES_H_ */
110