mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
94 lines
3.3 KiB
C
94 lines
3.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2022 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/syscall-sysv.internal.h"
|
|
#include "libc/calls/syscall_support-sysv.internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/fmt/itoa.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/termios.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
#define TIOCGPTN 0x80045430 // linux
|
|
#define TIOCPTYGNAME 0x40807453 // xnu
|
|
#define TIOCPTSNAME 0x48087448 // netbsd
|
|
#define FIODGNAME 0x80106678 // freebsd
|
|
|
|
struct fiodgname_arg {
|
|
int len;
|
|
void *buf;
|
|
};
|
|
|
|
struct ptmget {
|
|
int cfd;
|
|
int sfd;
|
|
char cn[1024];
|
|
char sn[1024];
|
|
};
|
|
|
|
int _ptsname(int fd, char *buf, size_t size) {
|
|
int pty;
|
|
size_t n;
|
|
struct ptmget t;
|
|
|
|
if (_isptmaster(fd)) {
|
|
return -1;
|
|
}
|
|
|
|
t.sn[0] = '/';
|
|
t.sn[1] = 'd';
|
|
t.sn[2] = 'e';
|
|
t.sn[3] = 'v';
|
|
t.sn[4] = '/';
|
|
t.sn[5] = 0;
|
|
|
|
if (IsLinux()) {
|
|
if (sys_ioctl(fd, TIOCGPTN, &pty)) return -1;
|
|
t.sn[5] = 'p';
|
|
t.sn[6] = 't';
|
|
t.sn[7] = 's';
|
|
t.sn[8] = '/';
|
|
FormatInt32(t.sn + 9, pty);
|
|
} else if (IsXnu()) {
|
|
if (sys_ioctl(fd, TIOCPTYGNAME, t.sn)) {
|
|
return -1;
|
|
}
|
|
} else if (IsFreebsd()) {
|
|
struct fiodgname_arg fgn = {sizeof(t.sn) - 5, t.sn + 5};
|
|
if (sys_ioctl(fd, FIODGNAME, &fgn) == -1) {
|
|
if (errno == EINVAL) {
|
|
errno = ERANGE;
|
|
}
|
|
return -1;
|
|
}
|
|
} else if (IsNetbsd()) {
|
|
if (sys_ioctl(fd, TIOCPTSNAME, &t)) {
|
|
return -1;
|
|
}
|
|
} else {
|
|
return enosys();
|
|
}
|
|
|
|
if ((n = strlen(t.sn)) < size) {
|
|
memcpy(buf, t.sn, n + 1);
|
|
return 0;
|
|
} else {
|
|
return erange();
|
|
}
|
|
}
|