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64 lines
3 KiB
C
64 lines
3 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/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/sig.internal.h"
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#include "libc/calls/struct/fd.internal.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/struct/winsize.h"
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#include "libc/calls/struct/winsize.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/nt/struct/consolescreenbufferinfoex.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sicode.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/thread/tls.h"
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#ifdef __x86_64__
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static struct winsize __ws;
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textwindows void _check_sigwinch(struct Fd *fd) {
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int e;
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siginfo_t si;
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struct winsize ws, old;
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struct NtConsoleScreenBufferInfoEx sbinfo;
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if (__tls_enabled && __threaded != gettid()) return;
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old = __ws;
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e = errno;
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if (old.ws_row != 0xffff) {
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if (ioctl_tiocgwinsz_nt(fd, &ws) != -1) {
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if (old.ws_col != ws.ws_col || old.ws_row != ws.ws_row) {
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__ws = ws;
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if (old.ws_col | old.ws_row) {
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__sig_add(0, SIGWINCH, SI_KERNEL);
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}
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}
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} else {
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if (!old.ws_row && !old.ws_col) {
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__ws.ws_row = 0xffff;
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}
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}
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}
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errno = e;
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}
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#endif /* __x86_64__ */
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