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