mirror of
https://github.com/jart/cosmopolitan.git
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1ee2e89326
- This commit mints a new release of APE Loader v1.2 which supports loading ELF programs with a non-contiguous virtual address layout even though we've never been able to take advantage of it, due to how `objcopy -SO binary` fills any holes left by PT_LOAD. This'll change soon, since we'll have a new way of creating APE binaries. - The undiamonding trick with our ioctl() implementation is removed since POSIX has been killing ioctl() for years and they've done a much better job. One problem it resolves, is that ioctl(FIONREAD) wasn't working earlier and that caused issues when building Emacs
50 lines
2.7 KiB
C
50 lines
2.7 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 2023 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.h"
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#include "libc/calls/struct/winsize.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/calls/termios.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/intrin/strace.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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/**
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* Gets terminal window size.
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*/
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int tcgetwinsize(int fd, struct winsize *ws) {
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int rc;
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if (IsAsan() && !__asan_is_valid(ws, sizeof(*ws))) {
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rc = efault();
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} else if (fd >= 0) {
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if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
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rc = enotty();
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} else if (IsWindows()) {
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rc = tcgetwinsize_nt(g_fds.p + fd, ws);
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} else {
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rc = sys_ioctl(fd, TIOCGWINSZ, ws);
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}
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} else {
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rc = einval();
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}
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STRACE("tcgetwinsize(%d, [%s]) → %d% m", fd, DescribeWinsize(rc, ws), rc);
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return rc;
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}
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