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 weak _confstr = confstr
28
29 #include "lint.h"
30 #include "xpg6.h"
31 #include <sys/types.h>
32 #include <unistd.h>
33 #include <errno.h>
34 #include <string.h>
35
36 typedef struct {
37 int config_value;
38 char *value;
39 } config;
40
41 /*
42 * keep these in the same order as in sys/unistd.h
43 */
44 static const config default_conf[] = {
45 { _CS_LFS_CFLAGS, "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
46 { _CS_LFS_LDFLAGS, "" },
47 { _CS_LFS_LIBS, "" },
48 { _CS_LFS_LINTFLAGS, "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
49 { _CS_LFS64_CFLAGS, "-D_LARGEFILE64_SOURCE" },
50 { _CS_LFS64_LDFLAGS, "" },
51 { _CS_LFS64_LIBS, "" },
52 { _CS_LFS64_LINTFLAGS, "-D_LARGEFILE64_SOURCE" },
53 { _CS_XBS5_ILP32_OFF32_CFLAGS, "" },
54 { _CS_XBS5_ILP32_OFF32_LDFLAGS, "" },
55 { _CS_XBS5_ILP32_OFF32_LIBS, "" },
56 { _CS_XBS5_ILP32_OFF32_LINTFLAGS, "" },
57 { _CS_XBS5_ILP32_OFFBIG_CFLAGS,
58 "-Xa -Usun -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
59 { _CS_XBS5_ILP32_OFFBIG_LDFLAGS, "" },
60 { _CS_XBS5_ILP32_OFFBIG_LIBS, "" },
61 { _CS_XBS5_ILP32_OFFBIG_LINTFLAGS,
62 "-Xa -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"},
63 { _CS_POSIX_V6_ILP32_OFF32_CFLAGS, "" },
64 { _CS_POSIX_V6_ILP32_OFF32_LDFLAGS, "" },
65 { _CS_POSIX_V6_ILP32_OFF32_LIBS, "" },
66 { _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS,
67 "-Xa -Usun -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" },
68 { _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS, "" },
69 { _CS_POSIX_V6_ILP32_OFFBIG_LIBS, "" },
70 { _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS,
71 "POSIX_V6_ILP32_OFF32\nPOSIX_V6_ILP32_OFFBIG\n"
72 "POSIX_V6_LP64_OFF64\nPOSIX_V6_LPBIG_OFFBIG" },
73 { _CS_XBS5_LP64_OFF64_CFLAGS, "-xarch=generic64" },
74 { _CS_XBS5_LP64_OFF64_LDFLAGS, "-xarch=generic64" },
75 { _CS_XBS5_LP64_OFF64_LIBS, "" },
76 { _CS_XBS5_LP64_OFF64_LINTFLAGS, "-xarch=generic64" },
77 { _CS_XBS5_LPBIG_OFFBIG_CFLAGS, "-xarch=generic64" },
78 { _CS_XBS5_LPBIG_OFFBIG_LDFLAGS, "-xarch=generic64" },
79 { _CS_XBS5_LPBIG_OFFBIG_LIBS, "" },
80 { _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS, "-xarch=generic64" },
81 { _CS_POSIX_V6_LP64_OFF64_CFLAGS, "-xarch=generic64" },
82 { _CS_POSIX_V6_LP64_OFF64_LDFLAGS, "-xarch=generic64" },
83 { _CS_POSIX_V6_LP64_OFF64_LIBS, "" },
84 { _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS, "-xarch=generic64" },
85 { _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS, "-xarch=generic64" },
86 { _CS_POSIX_V6_LPBIG_OFFBIG_LIBS, "" },
87 };
88
89 #define CS_ENTRY_COUNT (sizeof (default_conf) / sizeof (config))
90
91 size_t
confstr(int name,char * buf,size_t length)92 confstr(int name, char *buf, size_t length)
93 {
94 size_t conf_length;
95 config *entry;
96 int i;
97 char *path;
98
99 /* Keep _CS_PATH in sync with execvp.c */
100
101 if (name == _CS_PATH) {
102 if (__xpg6 & _C99SUSv3_XPG6_sysconf_version)
103 path = "/usr/xpg6/bin:/usr/xpg4/bin:/usr/ccs/bin:"
104 "/usr/bin:/opt/SUNWspro/bin";
105 else
106 path = "/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:"
107 "/opt/SUNWspro/bin";
108
109 conf_length = strlen(path) + 1;
110 if (length != 0) {
111 (void) strncpy(buf, path, length);
112 buf[length - 1] = '\0';
113 }
114 return (conf_length);
115 }
116 /*
117 * Make sure others are known configuration parameters
118 */
119 entry = (config *)default_conf;
120 for (i = 0; i < CS_ENTRY_COUNT; i++) {
121 if (name == entry->config_value) {
122 /*
123 * Copy out the parameter from our tables.
124 */
125 conf_length = strlen(entry->value) + 1;
126 if (length != 0) {
127 (void) strncpy(buf, entry->value, length);
128 buf[length - 1] = '\0';
129 }
130 return (conf_length);
131 }
132 entry++;
133 }
134
135 /* If the entry was not found in table return an error */
136 errno = EINVAL;
137 return ((size_t)0);
138 }
139