/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│ │vi: set net 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/ioctl.h" #include "libc/calls/struct/metatermios.internal.h" #include "libc/calls/syscall-sysv.internal.h" #include "libc/calls/termios.internal.h" #include "libc/dce.h" #include "libc/intrin/asan.internal.h" #include "libc/intrin/nomultics.internal.h" #include "libc/intrin/strace.internal.h" #include "libc/intrin/weaken.h" #include "libc/sysv/consts/termios.h" #include "libc/sysv/errfuns.h" void __on_ioctl_tcsets(int); int ioctl_tcsets_nt(int, uint64_t, const struct termios *); static int ioctl_tcsets_metal(int fd, uint64_t request, const struct termios *tio) { return 0; } static int ioctl_tcsets_sysv(int fd, uint64_t request, const struct termios *tio) { union metatermios mt; if (IsAsan() && !__asan_is_valid(tio, sizeof(*tio))) return efault(); return sys_ioctl(fd, request, __termios2host(&mt, tio)); } /** * Changes terminal behavior. * * @see tcsetattr(fd, TCSA{NOW,DRAIN,FLUSH}, tio) dispatches here * @see ioctl(fd, TCSETS{,W,F}, tio) dispatches here * @see ioctl(fd, TIOCGETA{,W,F}, tio) dispatches here */ int ioctl_tcsets(int fd, uint64_t request, ...) { int rc; va_list va; static bool once; const struct termios *tio; va_start(va, request); tio = va_arg(va, const struct termios *); va_end(va); if (0 <= fd && fd <= 2 && _weaken(__on_ioctl_tcsets)) { if (!once) { _weaken(__on_ioctl_tcsets)(fd); once = true; } } if (!tio || (IsAsan() && !__asan_is_valid(tio, sizeof(*tio)))) { rc = efault(); } else if (fd >= 0) { if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) { rc = enotty(); } else if (IsMetal()) { rc = ioctl_tcsets_metal(fd, request, tio); } else if (!IsWindows()) { rc = ioctl_tcsets_sysv(fd, request, tio); } else { rc = ioctl_tcsets_nt(fd, request, tio); } } else { rc = einval(); } STRACE("ioctl_tcsets(%d, %p, %p) → %d% m", fd, request, tio, rc); return rc; }