mirror of
https://github.com/jart/cosmopolitan.git
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965516e313
- Get SIGWINCH working again on the New Technology - Correctly handle O_NOFOLLOW in open() on Windows - Implement synthetic umask() functionality on Windows - Do a better job managing file execute access on Windows - Fill in `st_uid` and `st_gid` with username hash on Windows - Munge UNICODE control pictures into control codes on Windows - Do a better job ensuring Windows console settings are restored - Introduce KPRINTF_LOG environment variable to log kprintf to a file
61 lines
3.1 KiB
C
61 lines
3.1 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/struct/winsize.internal.h"
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#include "libc/nt/console.h"
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#include "libc/nt/struct/consolescreenbufferinfoex.h"
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#include "libc/sysv/consts/fileno.h"
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#include "libc/sysv/errfuns.h"
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textwindows int tcgetwinsize_nt(int fd, struct winsize *ws) {
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// The Linux man page doesn't list EBADF as an errno for this.
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if (!__isfdopen(fd)) {
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return enotty();
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}
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// Unlike _check_sigwinch() this is an API so be stricter.
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intptr_t hConsoleOutput;
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if (fd == STDIN_FILENO) {
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uint32_t dwMode;
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// WIN32 doesn't allow GetConsoleScreenBufferInfoEx(stdin)
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if (GetConsoleMode(g_fds.p[STDIN_FILENO].handle, &dwMode)) {
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hConsoleOutput = g_fds.p[STDOUT_FILENO].handle;
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if (GetConsoleMode(hConsoleOutput, &dwMode)) {
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hConsoleOutput = g_fds.p[STDERR_FILENO].handle;
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}
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} else {
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return enotty();
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}
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} else if (g_fds.p[fd].kind == kFdConsole) {
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hConsoleOutput = g_fds.p[fd].extra;
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} else {
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hConsoleOutput = g_fds.p[fd].handle;
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}
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// Query the console.
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struct NtConsoleScreenBufferInfoEx sr = {.cbSize = sizeof(sr)};
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if (GetConsoleScreenBufferInfoEx(hConsoleOutput, &sr)) {
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ws->ws_col = sr.srWindow.Right - sr.srWindow.Left + 1;
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ws->ws_row = sr.srWindow.Bottom - sr.srWindow.Top + 1;
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return 0;
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} else {
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return enotty();
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}
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}
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