summaryrefslogtreecommitdiff
path: root/usr/src/lib/libc/port/gen/confstr.c
blob: 5cc2afb7f854575d872cc7af5c7f3c0764408315 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#pragma	weak _confstr = confstr

#include "lint.h"
#include "xpg6.h"
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>

typedef struct {
	int	config_value;
	char	*value;
} config;

/*
 * keep these in the same order as in sys/unistd.h
 */
static const config	default_conf[] = {
	{ _CS_LFS_CFLAGS,	"-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
	{ _CS_LFS_LDFLAGS,	""					},
	{ _CS_LFS_LIBS,		""					},
	{ _CS_LFS_LINTFLAGS,	"-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
	{ _CS_LFS64_CFLAGS,	"-D_LARGEFILE64_SOURCE"			},
	{ _CS_LFS64_LDFLAGS,	""					},
	{ _CS_LFS64_LIBS,	""					},
	{ _CS_LFS64_LINTFLAGS,	"-D_LARGEFILE64_SOURCE"			},
	{ _CS_XBS5_ILP32_OFF32_CFLAGS,	""				},
	{ _CS_XBS5_ILP32_OFF32_LDFLAGS,	""				},
	{ _CS_XBS5_ILP32_OFF32_LIBS,	""				},
	{ _CS_XBS5_ILP32_OFF32_LINTFLAGS, ""				},
	{ _CS_XBS5_ILP32_OFFBIG_CFLAGS,
"-Xa -Usun -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
	{ _CS_XBS5_ILP32_OFFBIG_LDFLAGS, ""				},
	{ _CS_XBS5_ILP32_OFFBIG_LIBS,	""				},
	{ _CS_XBS5_ILP32_OFFBIG_LINTFLAGS,
		"-Xa -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"},
	{ _CS_POSIX_V6_ILP32_OFF32_CFLAGS,	""			},
	{ _CS_POSIX_V6_ILP32_OFF32_LDFLAGS,	""			},
	{ _CS_POSIX_V6_ILP32_OFF32_LIBS,	""			},
	{ _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS,
"-Xa -Usun -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
	{ _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS,	""			},
	{ _CS_POSIX_V6_ILP32_OFFBIG_LIBS,	""			},
	{ _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS,
		"POSIX_V6_ILP32_OFF32\nPOSIX_V6_ILP32_OFFBIG\n"
		"POSIX_V6_LP64_OFF64\nPOSIX_V6_LPBIG_OFFBIG"		},
	{ _CS_XBS5_LP64_OFF64_CFLAGS, "-xarch=generic64"		},
	{ _CS_XBS5_LP64_OFF64_LDFLAGS,	"-xarch=generic64"		},
	{ _CS_XBS5_LP64_OFF64_LIBS,	""				},
	{ _CS_XBS5_LP64_OFF64_LINTFLAGS, "-xarch=generic64" 		},
	{ _CS_XBS5_LPBIG_OFFBIG_CFLAGS, "-xarch=generic64" 		},
	{ _CS_XBS5_LPBIG_OFFBIG_LDFLAGS, "-xarch=generic64"		},
	{ _CS_XBS5_LPBIG_OFFBIG_LIBS,	""				},
	{ _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS, "-xarch=generic64"		},
	{ _CS_POSIX_V6_LP64_OFF64_CFLAGS, "-xarch=generic64"		},
	{ _CS_POSIX_V6_LP64_OFF64_LDFLAGS, "-xarch=generic64"		},
	{ _CS_POSIX_V6_LP64_OFF64_LIBS,	""				},
	{ _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS, "-xarch=generic64" 		},
	{ _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS, "-xarch=generic64"		},
	{ _CS_POSIX_V6_LPBIG_OFFBIG_LIBS, ""				},
};

#define	CS_ENTRY_COUNT (sizeof (default_conf) / sizeof (config))

size_t
confstr(int name, char *buf, size_t length)
{
	size_t			conf_length;
	config			*entry;
	int			i;
	char			*path;

	/* Keep _CS_PATH in sync with execvp.c */

	if (name == _CS_PATH) {
		if (__xpg6 & _C99SUSv3_XPG6_sysconf_version)
			path = "/usr/xpg6/bin:/usr/xpg4/bin:/usr/ccs/bin:"
			    "/usr/bin:/opt/SUNWspro/bin";
		else
			path = "/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:"
			    "/opt/SUNWspro/bin";

		conf_length = strlen(path) + 1;
		if (length != 0) {
			(void) strncpy(buf, path, length);
			buf[length - 1] = '\0';
		}
		return (conf_length);
	}
	/*
	 * Make sure others are known configuration parameters
	 */
	entry = (config *)default_conf;
	for (i = 0; i < CS_ENTRY_COUNT; i++) {
		if (name == entry->config_value) {
			/*
			 * Copy out the parameter from our tables.
			 */
			conf_length = strlen(entry->value) + 1;
			if (length != 0) {
				(void) strncpy(buf, entry->value, length);
				buf[length - 1] = '\0';
			}
			return (conf_length);
		}
		entry++;
	}

	/* If the entry was not found in table return an error */
	errno = EINVAL;
	return ((size_t)0);
}