mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
112 lines
4.4 KiB
C
112 lines
4.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/struct/metatermios.internal.h"
|
|
#include "libc/calls/struct/termios.h"
|
|
#include "libc/calls/struct/termios.internal.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/calls/termios.internal.h"
|
|
#include "libc/calls/ttydefaults.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/asan.internal.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
int tcgetattr_nt(int, struct termios *);
|
|
|
|
static int tcgetattr_metal(int fd, struct termios *tio) {
|
|
bzero(tio, sizeof(*tio));
|
|
tio->c_iflag = TTYDEF_IFLAG;
|
|
tio->c_oflag = TTYDEF_OFLAG;
|
|
tio->c_lflag = TTYDEF_LFLAG;
|
|
tio->c_cflag = TTYDEF_CFLAG;
|
|
return 0;
|
|
}
|
|
|
|
static int tcgetattr_bsd(int fd, struct termios *tio) {
|
|
int rc;
|
|
union metatermios mt;
|
|
if ((rc = sys_ioctl(fd, TCGETS, &mt)) != -1) {
|
|
if (IsXnu()) {
|
|
COPY_TERMIOS(tio, &mt.xnu);
|
|
} else {
|
|
COPY_TERMIOS(tio, &mt.bsd);
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Obtains the termios struct.
|
|
*
|
|
* Here are the approximate defaults you can expect across platforms:
|
|
*
|
|
* c_iflag = ICRNL IXON
|
|
* c_oflag = OPOST ONLCR NL0 CR0 TAB0 BS0 VT0 FF0
|
|
* c_cflag = ISIG CREAD CS8
|
|
* c_lflag = ISIG ICANON ECHO ECHOE ECHOK IEXTEN ECHOCTL ECHOKE
|
|
* cfgetispeed() = B38400
|
|
* cfgetospeed() = B38400
|
|
* c_cc[VINTR] = CTRL-C
|
|
* c_cc[VQUIT] = CTRL-\ # ignore this comment
|
|
* c_cc[VERASE] = CTRL-?
|
|
* c_cc[VKILL] = CTRL-U
|
|
* c_cc[VEOF] = CTRL-D
|
|
* c_cc[VTIME] = CTRL-@
|
|
* c_cc[VMIN] = CTRL-A
|
|
* c_cc[VSTART] = CTRL-Q
|
|
* c_cc[VSTOP] = CTRL-S
|
|
* c_cc[VSUSP] = CTRL-Z
|
|
* c_cc[VEOL] = CTRL-@
|
|
* c_cc[VSWTC] = CTRL-@
|
|
* c_cc[VREPRINT] = CTRL-R
|
|
* c_cc[VDISCARD] = CTRL-O
|
|
* c_cc[VWERASE] = CTRL-W
|
|
* c_cc[VLNEXT] = CTRL-V
|
|
* c_cc[VEOL2] = CTRL-@
|
|
*
|
|
* @param fd open file descriptor that isatty()
|
|
* @param tio is where result is stored
|
|
* @return 0 on success, or -1 w/ errno
|
|
* @asyncsignalsafe
|
|
*/
|
|
int tcgetattr(int fd, struct termios *tio) {
|
|
int rc;
|
|
if (fd < 0) {
|
|
rc = einval();
|
|
} else if (!tio || (IsAsan() && !__asan_is_valid(tio, sizeof(*tio)))) {
|
|
rc = efault();
|
|
} else if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
|
|
rc = enotty();
|
|
} else if (IsLinux()) {
|
|
rc = sys_ioctl(fd, TCGETS, tio);
|
|
} else if (IsBsd()) {
|
|
rc = tcgetattr_bsd(fd, tio);
|
|
} else if (IsMetal()) {
|
|
rc = tcgetattr_metal(fd, tio);
|
|
} else if (IsWindows()) {
|
|
rc = tcgetattr_nt(fd, tio);
|
|
} else {
|
|
rc = enosys();
|
|
}
|
|
STRACE("tcgetattr(%d, [%s]) → %d% m", fd, DescribeTermios(rc, tio), rc);
|
|
return rc;
|
|
}
|