mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
c7a8cd21e9
This change improves copy_file_range(), sendfile(), splice(), openpty(), closefrom(), close_range(), fadvise() and posix_fadvise() in addition to writing tests that confirm things like errno and seeking behavior across platforms. We now less aggressively polyfill behavior with some of these functions when the platform support isn't available. Please see: https://justine.lol/cosmopolitan/functions.html
60 lines
2.9 KiB
C
60 lines
2.9 KiB
C
/*-*- 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 2021 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/struct/metatermios.internal.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/log/internal.h"
|
|
#include "libc/log/libfatal.internal.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/sysv/consts/termios.h"
|
|
|
|
/**
|
|
* @fileoverview Terminal Restoration Helper for System Five.
|
|
*
|
|
* This is used by the crash reporting functions, e.g. __die(), to help
|
|
* ensure the terminal is in an unborked state after a crash happens.
|
|
*/
|
|
|
|
#define RESET_COLOR "\e[0m"
|
|
#define SHOW_CURSOR "\e[?25h"
|
|
#define DISABLE_MOUSE "\e[?1000;1002;1015;1006l"
|
|
#define ANSI_RESTORE RESET_COLOR SHOW_CURSOR DISABLE_MOUSE
|
|
|
|
static bool __isrestorable;
|
|
static union metatermios __oldtermios;
|
|
|
|
// called weakly by libc/calls/ioctl_tcsets.c to avoid pledge("tty")
|
|
void __on_ioctl_tcsets(int fd) {
|
|
int e;
|
|
e = errno;
|
|
if (sys_ioctl(fd, TCGETS, &__oldtermios) != -1) {
|
|
__isrestorable = true;
|
|
}
|
|
errno = e;
|
|
}
|
|
|
|
void __restore_tty(void) {
|
|
int e;
|
|
if (__isrestorable && !__isworker && !__nocolor) {
|
|
e = errno;
|
|
sys_write(0, ANSI_RESTORE, __strlen(ANSI_RESTORE));
|
|
sys_ioctl(0, TCSETSF, &__oldtermios);
|
|
errno = e;
|
|
}
|
|
}
|