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
38 typedef 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 */
46 static 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
93 size_t
confstr(int name,char * buf,size_t length)94 confstr(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