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https://github.com/jart/cosmopolitan.git
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5b60e5a37d
The termios::c_cc field turned out to be incorrectly defined on Linux due to some confusion between the glibc and kernel definitions. We'll be using the kernel definition, since it has the strongest consensus. Fields have been have been added to struct stat for BSD compatibility such as st_birthtim, plus the GLIBC compatibility of isystem/sys/stat has been improved.
87 lines
3.6 KiB
C
87 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 2020 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/internal.h"
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#include "libc/calls/ioctl.h"
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#include "libc/calls/struct/metatermios.internal.h"
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#include "libc/calls/termios.internal.h"
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#include "libc/calls/ttydefaults.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/sysv/consts/termios.h"
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#include "libc/sysv/errfuns.h"
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int ioctl_tcgets_nt(int, struct termios *) hidden;
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static int ioctl_tcgets_metal(int fd, struct termios *tio) {
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memset(tio, 0, sizeof(*tio));
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tio->c_iflag = TTYDEF_IFLAG;
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tio->c_oflag = TTYDEF_OFLAG;
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tio->c_lflag = TTYDEF_LFLAG;
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tio->c_cflag = TTYDEF_CFLAG;
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return 0;
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}
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static int ioctl_tcgets_sysv(int fd, struct termios *tio) {
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int rc;
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union metatermios mt;
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if (IsLinux()) {
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if (IsAsan() && !__asan_is_valid(tio, sizeof(*tio))) return efault();
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return sys_ioctl(fd, TCGETS, tio);
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} else {
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if ((rc = sys_ioctl(fd, TCGETS, &mt)) != -1) {
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if (IsXnu()) {
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COPY_TERMIOS(tio, &mt.xnu);
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} else if (IsFreebsd() || IsOpenbsd() || IsNetbsd()) {
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COPY_TERMIOS(tio, &mt.bsd);
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} else {
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unreachable;
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}
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}
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return rc;
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}
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}
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/**
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* Returns information about terminal.
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*
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* @see tcgetattr(fd, tio) dispatches here
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* @see ioctl(fd, TCGETS, tio) dispatches here
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* @see ioctl(fd, TIOCGETA, tio) dispatches here
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*/
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int ioctl_tcgets(int fd, ...) {
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va_list va;
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struct termios *tio;
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va_start(va, fd);
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tio = va_arg(va, struct termios *);
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va_end(va);
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if (fd >= 0) {
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if (!tio) return efault();
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if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
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return enotty();
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} else if (IsMetal()) {
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return ioctl_tcgets_metal(fd, tio);
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} else if (!IsWindows()) {
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return ioctl_tcgets_sysv(fd, tio);
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} else {
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return ioctl_tcgets_nt(fd, tio);
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}
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} else {
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return einval();
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}
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}
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