mirror of
https://github.com/jart/cosmopolitan.git
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0409096658
This change undefines __linux__ and adds APIs like clock_settime(). The gosh darned getopt_long() API has been reintroduced, thanks to OpenBSD.
107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/termios.h"
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#include "libc/dce.h"
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#include "libc/sysv/consts/termios.h"
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#include "libc/sysv/errfuns.h"
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#define CBAUD 0x100f
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#define CBAUDEX 0x1000
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/**
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* Returns input baud rate.
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* @asyncsignalsafe
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*/
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uint32_t cfgetispeed(const struct termios *t) {
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if (IsLinux()) {
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return t->c_cflag & CBAUD;
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} else {
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return t->_c_ispeed;
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}
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}
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/**
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* Returns output baud rate.
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* @asyncsignalsafe
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*/
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uint32_t cfgetospeed(const struct termios *t) {
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if (IsLinux()) {
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return t->c_cflag & CBAUD;
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} else {
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return t->_c_ospeed;
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}
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}
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/**
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* Sets output baud rate.
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*
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* @param speed can be `B0`, `B50`, `B38400`, `B4000000`, etc.
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* @return 0 on success, or -1 w/ errno
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* @raise EINVAL if `speed` isn't valid
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* @asyncsignalsafe
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*/
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int cfsetospeed(struct termios *t, uint32_t speed) {
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if (IsLinux()) {
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if (!(speed & ~CBAUD)) {
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t->c_cflag &= ~CBAUD;
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t->c_cflag |= speed;
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return 0;
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} else {
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return einval();
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}
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} else {
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t->_c_ospeed = speed;
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return 0;
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}
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}
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/**
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* Sets input baud rate.
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*
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* @param speed can be `B0`, `B50`, `B38400`, `B4000000`, etc.
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* @return 0 on success, or -1 w/ errno
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* @raise EINVAL if `speed` isn't valid
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* @asyncsignalsafe
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*/
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int cfsetispeed(struct termios *t, uint32_t speed) {
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if (IsLinux()) {
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if (speed) {
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return cfsetospeed(t, speed);
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} else {
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return 0;
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}
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} else {
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t->_c_ispeed = speed;
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return 0;
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}
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}
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/**
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* Sets input and output baud rate.
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*
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* @param speed can be `B0`, `B50`, `B38400`, `B4000000`, etc.
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* @return 0 on success, or -1 w/ errno
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* @raise EINVAL if `speed` isn't valid
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* @asyncsignalsafe
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*/
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int cfsetspeed(struct termios *t, uint32_t speed) {
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if (cfsetispeed(t, speed) == -1) return -1;
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if (cfsetospeed(t, speed) == -1) return -1;
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return 0;
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}
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