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, Version 1.0 only

     6  * (the "License").  You may not use this file except in compliance

     7  * with the License.

     8  *

     9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

    10  * or http://www.opensolaris.org/os/licensing.

    11  * See the License for the specific language governing permissions

    12  * and limitations under the License.

    13  *

    14  * When distributing Covered Code, include this CDDL HEADER in each

    15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

    16  * If applicable, add the following below this CDDL HEADER, with the

    17  * fields enclosed by brackets "[]" replaced with your own identifying

    18  * information: Portions Copyright [yyyy] [name of copyright owner]

    19  *

    20  * CDDL HEADER END

    21  */

    22 /*

    23  * Copyright 2004 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 #include "synonyms.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

    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 }