2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Alex Hornung <ahornung@gmail.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include "namespace.h"
35 #include <sys/types.h>
44 #include <machine/stdint.h>
46 #include <sys/ioctl.h>
47 #include "reentrant.h"
48 #include "un-namespace.h"
50 #include "libc_private.h"
52 #define TTYNAME_DEVFS_COMPAT 1
54 static char ptsname_buf[sizeof(_PATH_DEV) + NAME_MAX];
56 static once_t ptsname_init_once = ONCE_INITIALIZER;
57 static thread_key_t ptsname_key;
58 static int ptsname_keycreated = 0;
65 error = _ioctl(fd, TIOCISPTMASTER);
66 if ((error) && (errno != EBADF))
73 ptsname_keycreate(void)
75 ptsname_keycreated = (thr_keycreate(&ptsname_key, free) == 0);
85 error = __isptmaster(fd);
92 if (thr_once(&ptsname_init_once, ptsname_keycreate) != 0 ||
95 if ((buf = thr_getspecific(ptsname_key)) == NULL) {
96 if ((buf = malloc(sizeof ptsname_buf)) == NULL)
98 if (thr_setspecific(ptsname_key, buf) != 0) {
105 strcpy(buf, "/dev/");
108 if (((error = fdevname_r(fd, buf+used, sizeof(ptsname_buf)-used))) != 0) {
119 posix_openpt(int oflag)
121 return open("/dev/ptmx", oflag);
127 return __isptmaster(fd);
133 return __isptmaster(fd);