1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#pragma	weak _confstr = confstr
30
31#include "lint.h"
32#include "xpg6.h"
33#include <sys/types.h>
34#include <unistd.h>
35#include <errno.h>
36#include <string.h>
37
38typedef struct {
39	int	config_value;
40	char	*value;
41} config;
42
43/*
44 * keep these in the same order as in sys/unistd.h
45 */
46static const config	default_conf[] = {
47	{ _CS_LFS_CFLAGS,	"-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
48	{ _CS_LFS_LDFLAGS,	""					},
49	{ _CS_LFS_LIBS,		""					},
50	{ _CS_LFS_LINTFLAGS,	"-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
51	{ _CS_LFS64_CFLAGS,	"-D_LARGEFILE64_SOURCE"			},
52	{ _CS_LFS64_LDFLAGS,	""					},
53	{ _CS_LFS64_LIBS,	""					},
54	{ _CS_LFS64_LINTFLAGS,	"-D_LARGEFILE64_SOURCE"			},
55	{ _CS_XBS5_ILP32_OFF32_CFLAGS,	""				},
56	{ _CS_XBS5_ILP32_OFF32_LDFLAGS,	""				},
57	{ _CS_XBS5_ILP32_OFF32_LIBS,	""				},
58	{ _CS_XBS5_ILP32_OFF32_LINTFLAGS, ""				},
59	{ _CS_XBS5_ILP32_OFFBIG_CFLAGS,
60"-Xa -Usun -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
61	{ _CS_XBS5_ILP32_OFFBIG_LDFLAGS, ""				},
62	{ _CS_XBS5_ILP32_OFFBIG_LIBS,	""				},
63	{ _CS_XBS5_ILP32_OFFBIG_LINTFLAGS,
64		"-Xa -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"},
65	{ _CS_POSIX_V6_ILP32_OFF32_CFLAGS,	""			},
66	{ _CS_POSIX_V6_ILP32_OFF32_LDFLAGS,	""			},
67	{ _CS_POSIX_V6_ILP32_OFF32_LIBS,	""			},
68	{ _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS,
69"-Xa -Usun -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
70	{ _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS,	""			},
71	{ _CS_POSIX_V6_ILP32_OFFBIG_LIBS,	""			},
72	{ _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS,
73		"POSIX_V6_ILP32_OFF32\nPOSIX_V6_ILP32_OFFBIG\n"
74		"POSIX_V6_LP64_OFF64\nPOSIX_V6_LPBIG_OFFBIG"		},
75	{ _CS_XBS5_LP64_OFF64_CFLAGS, "-xarch=generic64"		},
76	{ _CS_XBS5_LP64_OFF64_LDFLAGS,	"-xarch=generic64"		},
77	{ _CS_XBS5_LP64_OFF64_LIBS,	""				},
78	{ _CS_XBS5_LP64_OFF64_LINTFLAGS, "-xarch=generic64" 		},
79	{ _CS_XBS5_LPBIG_OFFBIG_CFLAGS, "-xarch=generic64" 		},
80	{ _CS_XBS5_LPBIG_OFFBIG_LDFLAGS, "-xarch=generic64"		},
81	{ _CS_XBS5_LPBIG_OFFBIG_LIBS,	""				},
82	{ _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS, "-xarch=generic64"		},
83	{ _CS_POSIX_V6_LP64_OFF64_CFLAGS, "-xarch=generic64"		},
84	{ _CS_POSIX_V6_LP64_OFF64_LDFLAGS, "-xarch=generic64"		},
85	{ _CS_POSIX_V6_LP64_OFF64_LIBS,	""				},
86	{ _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS, "-xarch=generic64" 		},
87	{ _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS, "-xarch=generic64"		},
88	{ _CS_POSIX_V6_LPBIG_OFFBIG_LIBS, ""				},
89};
90
91#define	CS_ENTRY_COUNT (sizeof (default_conf) / sizeof (config))
92
93size_t
94confstr(int name, char *buf, size_t length)
95{
96	size_t			conf_length;
97	config			*entry;
98	int			i;
99	char			*path;
100
101	/* Keep _CS_PATH in sync with execvp.c */
102
103	if (name == _CS_PATH) {
104		if (__xpg6 & _C99SUSv3_XPG6_sysconf_version)
105			path = "/usr/xpg6/bin:/usr/xpg4/bin:/usr/ccs/bin:"
106			    "/usr/bin:/opt/SUNWspro/bin";
107		else
108			path = "/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:"
109			    "/opt/SUNWspro/bin";
110
111		conf_length = strlen(path) + 1;
112		if (length != 0) {
113			(void) strncpy(buf, path, length);
114			buf[length - 1] = '\0';
115		}
116		return (conf_length);
117	}
118	/*
119	 * Make sure others are known configuration parameters
120	 */
121	entry = (config *)default_conf;
122	for (i = 0; i < CS_ENTRY_COUNT; i++) {
123		if (name == entry->config_value) {
124			/*
125			 * Copy out the parameter from our tables.
126			 */
127			conf_length = strlen(entry->value) + 1;
128			if (length != 0) {
129				(void) strncpy(buf, entry->value, length);
130				buf[length - 1] = '\0';
131			}
132			return (conf_length);
133		}
134		entry++;
135	}
136
137	/* If the entry was not found in table return an error */
138	errno = EINVAL;
139	return ((size_t)0);
140}
141