1/*-
2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if defined(LIBC_SCCS) && !defined(lint)
35#if 0
36static char sccsid[] = "@(#)pty.c 8.3 (Berkeley) 5/16/94";
37#else
38static const char rcsid[] =
| 1/*-
2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if defined(LIBC_SCCS) && !defined(lint)
35#if 0
36static char sccsid[] = "@(#)pty.c 8.3 (Berkeley) 5/16/94";
37#else
38static const char rcsid[] =
|
39 "$Id: pty.c,v 1.7 1997/08/13 20:42:18 steve Exp $";
| 39 "$Id: pty.c,v 1.8 1998/10/09 11:24:20 jkh Exp $";
|
40#endif
41#endif /* LIBC_SCCS and not lint */
42
43#include <sys/types.h>
44#include <sys/ioctl.h>
45#include <sys/stat.h>
46
47#include <errno.h>
48#include <fcntl.h>
49#include <grp.h>
50#include <stdlib.h>
51#include <string.h>
52#include <termios.h>
53#include <unistd.h>
54#include <libutil.h>
55
56int
57openpty(amaster, aslave, name, termp, winp)
58 int *amaster, *aslave;
59 char *name;
60 struct termios *termp;
61 struct winsize *winp;
62{
| 40#endif
41#endif /* LIBC_SCCS and not lint */
42
43#include <sys/types.h>
44#include <sys/ioctl.h>
45#include <sys/stat.h>
46
47#include <errno.h>
48#include <fcntl.h>
49#include <grp.h>
50#include <stdlib.h>
51#include <string.h>
52#include <termios.h>
53#include <unistd.h>
54#include <libutil.h>
55
56int
57openpty(amaster, aslave, name, termp, winp)
58 int *amaster, *aslave;
59 char *name;
60 struct termios *termp;
61 struct winsize *winp;
62{
|
63 static char line[] = "/dev/ptyXX";
| 63 char line[] = "/dev/ptyXX";
|
64 register const char *cp1, *cp2;
65 register int master, slave, ttygid;
66 struct group *gr;
67
68 if ((gr = getgrnam("tty")) != NULL)
69 ttygid = gr->gr_gid;
70 else
71 ttygid = -1;
72
73 for (cp1 = "pqrsPQRS"; *cp1; cp1++) {
74 line[8] = *cp1;
75 for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) {
76 line[5] = 'p';
77 line[9] = *cp2;
78 if ((master = open(line, O_RDWR, 0)) == -1) {
79 if (errno == ENOENT)
80 return (-1); /* out of ptys */
81 } else {
82 line[5] = 't';
83 (void) chown(line, getuid(), ttygid);
84 (void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
85 (void) revoke(line);
86 if ((slave = open(line, O_RDWR, 0)) != -1) {
87 *amaster = master;
88 *aslave = slave;
89 if (name)
90 strcpy(name, line);
91 if (termp)
92 (void) tcsetattr(slave,
93 TCSAFLUSH, termp);
94 if (winp)
95 (void) ioctl(slave, TIOCSWINSZ,
96 (char *)winp);
97 return (0);
98 }
99 (void) close(master);
100 }
101 }
102 }
103 errno = ENOENT; /* out of ptys */
104 return (-1);
105}
106
107int
108forkpty(amaster, name, termp, winp)
109 int *amaster;
110 char *name;
111 struct termios *termp;
112 struct winsize *winp;
113{
114 int master, slave, pid;
115
116 if (openpty(&master, &slave, name, termp, winp) == -1)
117 return (-1);
118 switch (pid = fork()) {
119 case -1:
120 return (-1);
121 case 0:
122 /*
123 * child
124 */
125 (void) close(master);
126 login_tty(slave);
127 return (0);
128 }
129 /*
130 * parent
131 */
132 *amaster = master;
133 (void) close(slave);
134 return (pid);
135}
| 64 register const char *cp1, *cp2;
65 register int master, slave, ttygid;
66 struct group *gr;
67
68 if ((gr = getgrnam("tty")) != NULL)
69 ttygid = gr->gr_gid;
70 else
71 ttygid = -1;
72
73 for (cp1 = "pqrsPQRS"; *cp1; cp1++) {
74 line[8] = *cp1;
75 for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) {
76 line[5] = 'p';
77 line[9] = *cp2;
78 if ((master = open(line, O_RDWR, 0)) == -1) {
79 if (errno == ENOENT)
80 return (-1); /* out of ptys */
81 } else {
82 line[5] = 't';
83 (void) chown(line, getuid(), ttygid);
84 (void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
85 (void) revoke(line);
86 if ((slave = open(line, O_RDWR, 0)) != -1) {
87 *amaster = master;
88 *aslave = slave;
89 if (name)
90 strcpy(name, line);
91 if (termp)
92 (void) tcsetattr(slave,
93 TCSAFLUSH, termp);
94 if (winp)
95 (void) ioctl(slave, TIOCSWINSZ,
96 (char *)winp);
97 return (0);
98 }
99 (void) close(master);
100 }
101 }
102 }
103 errno = ENOENT; /* out of ptys */
104 return (-1);
105}
106
107int
108forkpty(amaster, name, termp, winp)
109 int *amaster;
110 char *name;
111 struct termios *termp;
112 struct winsize *winp;
113{
114 int master, slave, pid;
115
116 if (openpty(&master, &slave, name, termp, winp) == -1)
117 return (-1);
118 switch (pid = fork()) {
119 case -1:
120 return (-1);
121 case 0:
122 /*
123 * child
124 */
125 (void) close(master);
126 login_tty(slave);
127 return (0);
128 }
129 /*
130 * parent
131 */
132 *amaster = master;
133 (void) close(slave);
134 return (pid);
135}
|