mirror of
https://github.com/jart/cosmopolitan.git
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2046c0d2ae
- Expand redbean UNIX module - Expand redbean documentation - Ensure Lua copyright is embedded in binary - Increase the PATH_MAX limit especially on NT - Use column major sorting for linenoise completions - Fix some suboptimalities in redbean's new UNIX API - Figured out right flags for Multics newline in raw mode
99 lines
3.8 KiB
C
99 lines
3.8 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/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/struct/stat.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/fmt/fmt.h"
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#include "libc/fmt/itoa.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/log/log.h"
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#include "libc/nt/console.h"
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#include "libc/nt/enum/consolemodeflags.h"
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#include "libc/str/str.h"
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#include "libc/sysv/errfuns.h"
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static textwindows dontinline int sys_ttyname_nt(int fd, char *buf,
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size_t size) {
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uint32_t mode;
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if (GetConsoleMode(g_fds.p[fd].handle, &mode)) {
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if (mode & kNtEnableVirtualTerminalInput) {
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strncpy(buf, "CONIN$", size);
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return 0;
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} else {
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strncpy(buf, "CONOUT$", size);
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return 0;
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}
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} else {
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return enotty();
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}
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}
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static int ttyname_freebsd(int fd, char *buf, size_t size) {
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const unsigned FIODGNAME = 2148558456;
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struct fiodgname_arg {
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int len;
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void *buf;
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} fg;
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fg.buf = buf;
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fg.len = size;
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if (sys_ioctl(fd, FIODGNAME, &fg) != -1) return 0;
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return enotty();
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}
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static int ttyname_linux(int fd, char *buf, size_t size) {
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struct stat st1, st2;
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if (!isatty(fd)) return errno;
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char name[PATH_MAX + 1];
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FormatInt32(stpcpy(name, "/proc/self/fd/"), fd);
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ssize_t got;
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got = readlink(name, buf, size);
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if (got == -1) return errno;
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if ((size_t)got >= size) return erange();
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buf[got] = 0;
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if (stat(buf, &st1) || fstat(fd, &st2)) return errno;
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if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino) return enodev();
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return 0;
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}
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/**
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* Returns name of terminal, reentrantly.
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*/
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int ttyname_r(int fd, char *buf, size_t size) {
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int rc;
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if (IsLinux()) {
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rc = ttyname_linux(fd, buf, size);
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} else if (IsFreebsd()) {
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rc = ttyname_freebsd(fd, buf, size);
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} else if (IsWindows()) {
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if (__isfdkind(fd, kFdFile)) {
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rc = sys_ttyname_nt(fd, buf, size);
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} else {
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rc = ebadf();
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}
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} else {
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rc = enosys();
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}
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STRACE("ttyname_r(%d, %s) → %d% m", fd, buf, rc);
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return rc;
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}
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