mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
3a9cac4892
- Fix mkdeps.com out of memory error - Remove static memory from __get_cpu_count() - Add support for passing hyphen to cat in cocmd - Change more ZipOS errors from ENOTSUP to EROFS - Specify mem_unit in sysinfo() output on BSD OSes
49 lines
2.6 KiB
C
49 lines
2.6 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 2020 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/internal.h"
|
|
#include "libc/calls/struct/fd.internal.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/calls/syscall_support-sysv.internal.h"
|
|
#include "libc/calls/termios.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
#define TIOCPTYGRANT 0x20007454
|
|
|
|
/**
|
|
* Grants access to subordinate pseudoteletypewriter.
|
|
*
|
|
* @return 0 on success, or -1 w/ errno
|
|
* @raise EBADF if fd isn't open
|
|
* @raise EINVAL if fd is valid but not associated with pty
|
|
* @raise EACCES if pseudoterminal couldn't be accessed
|
|
*/
|
|
int grantpt(int fd) {
|
|
int rc;
|
|
if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
|
|
rc = enotty();
|
|
} else if (IsXnu()) {
|
|
rc = sys_ioctl(fd, TIOCPTYGRANT);
|
|
} else {
|
|
rc = _isptmaster(fd);
|
|
}
|
|
STRACE("grantpt(%d) → %d% m", fd, rc);
|
|
return rc;
|
|
}
|