2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid
[] = "@(#)getttyent.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
50 register struct ttyent
*t
;
53 while (t
= getttyent())
54 if (!strcmp(tty
, t
->ty_name
))
60 static char *skip
__P((char *)) internal_function
;
61 static char *value
__P((char *)) internal_function
;
66 static struct ttyent tty
;
69 #define MAXLINELENGTH 100
70 static char line
[MAXLINELENGTH
];
72 if (!tf
&& !setttyent())
76 if (!fgets_unlocked(p
= line
, sizeof(line
), tf
)) {
80 /* skip lines that are too big */
81 if (!index(p
, '\n')) {
82 while ((c
= getc_unlocked(tf
)) != '\n' && c
!= EOF
)
96 if (!*(tty
.ty_getty
= p
))
97 tty
.ty_getty
= tty
.ty_type
= NULL
;
100 if (!*(tty
.ty_type
= p
))
106 tty
.ty_window
= NULL
;
108 #define scmp(e) !strncmp(p, e, sizeof(e) - 1) && isspace(p[sizeof(e) - 1])
109 #define vcmp(e) !strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
110 for (; *p
; p
= skip(p
)) {
112 tty
.ty_status
&= ~TTY_ON
;
113 else if (scmp(_TTYS_ON
))
114 tty
.ty_status
|= TTY_ON
;
115 else if (scmp(_TTYS_SECURE
))
116 tty
.ty_status
|= TTY_SECURE
;
117 else if (vcmp(_TTYS_WINDOW
))
118 tty
.ty_window
= value(p
);
123 if (zapchar
== '#' || *p
== '#')
124 while ((c
= *++p
) == ' ' || c
== '\t')
129 if (p
= index(p
, '\n'))
137 * Skip over the current field, removing quotes, and return a pointer to
148 for (q
= 0, t
= p
; (c
= *p
) != '\0'; p
++) {
150 q
^= QUOTED
; /* obscure, but nice */
153 if (q
== QUOTED
&& *p
== '\\' && *(p
+1) == '"')
163 if (c
== '\t' || c
== ' ' || c
== '\n') {
166 while ((c
= *p
) == '\t' || c
== ' ' || c
== '\n')
181 return ((p
= index(p
, '=')) ? ++p
: NULL
);
191 } else if (tf
= fopen(_PATH_TTYS
, "r"))
202 rval
= !(fclose(tf
) == EOF
);