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[] = "@(#)confstr.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
50 confstr(int name, char *buf, size_t len)
53 const char UPE[] = "unsupported programming environment";
61 * POSIX/SUS ``Programming Environments'' stuff
63 * We don't support more than one programming environment
64 * on any platform (yet), so we just return the empty
65 * string for the environment we are compiled for,
66 * and the string "unsupported programming environment"
67 * for anything else. (The Standard says that if these
68 * values are used on a system which does not support
69 * this environment -- determined via sysconf() -- then
70 * the value we return is unspecified. So, we return
71 * something which will cause obvious breakage.)
73 case _CS_POSIX_V6_ILP32_OFF32_CFLAGS:
74 case _CS_POSIX_V6_ILP32_OFF32_LDFLAGS:
75 case _CS_POSIX_V6_ILP32_OFF32_LIBS:
76 case _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS:
77 case _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS:
78 case _CS_POSIX_V6_LPBIG_OFFBIG_LIBS:
80 * These two environments are never supported.
85 case _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS:
86 case _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS:
87 case _CS_POSIX_V6_ILP32_OFFBIG_LIBS:
88 if (sizeof(long) * CHAR_BIT == 32 &&
89 sizeof(off_t) > sizeof(long))
95 case _CS_POSIX_V6_LP64_OFF64_CFLAGS:
96 case _CS_POSIX_V6_LP64_OFF64_LDFLAGS:
97 case _CS_POSIX_V6_LP64_OFF64_LIBS:
98 if (sizeof(long) * CHAR_BIT >= 64 &&
99 sizeof(void *) * CHAR_BIT >= 64 &&
100 sizeof(int) * CHAR_BIT >= 32 &&
101 sizeof(off_t) >= sizeof(long))
107 case _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS:
108 /* XXX - should have more complete coverage */
109 if (sizeof(long) * CHAR_BIT >= 64)
110 p = "_POSIX_V6_LP64_OFF64";
112 p = "_POSIX_V6_ILP32_OFFBIG";
116 if (len != 0 && buf != NULL)
117 strlcpy(buf, p, len);
118 return (strlen(p) + 1);