dl.c revision 9273:9a0603d78ad3 
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 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#include	<string.h>
28#include	"_conv.h"
29#include	"dl_msg.h"
30
31#define	MODESZ	CONV_EXPN_FIELD_DEF_PREFIX_SIZE + \
32		MSG_RTLD_LAZY_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
33		MSG_RTLD_GLOBAL_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
34		MSG_RTLD_NOLOAD_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
35		MSG_RTLD_PARENT_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
36		MSG_RTLD_GROUP_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
37		MSG_RTLD_WORLD_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
38		MSG_RTLD_NODELETE_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
39		MSG_RTLD_FIRST_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
40		MSG_RTLD_CONFGEN_SIZE	+ CONV_EXPN_FIELD_DEF_SEP_SIZE + \
41		CONV_INV_BUFSIZE + CONV_EXPN_FIELD_DEF_SUFFIX_SIZE
42
43
44/*
45 * Ensure that Conv_dl_mode_buf_t is large enough:
46 *
47 * MODESZ is the real minimum size of the buffer required by conv_dl_mode().
48 * However, Conv_dl_mode_buf_t uses CONV_DL_MODE_BUFSIZE to set the
49 * buffer size. We do things this way because the definition of MODESZ uses
50 * information that is not available in the environment of other programs
51 * that include the conv.h header file.
52 */
53#if (CONV_DL_MODE_BUFSIZE != MODESZ) && !defined(__lint)
54#define	REPORT_BUFSIZE MODESZ
55#include "report_bufsize.h"
56#error "CONV_DL_MODE_BUFSIZE does not match MODESZ"
57#endif
58
59/*
60 * String conversion routine for dlopen() attributes.
61 */
62const char *
63conv_dl_mode(int mode, int fabricate, Conv_dl_mode_buf_t *dl_mode_buf)
64{
65	static const Val_desc vda[] = {
66		{ RTLD_NOLOAD,		MSG_RTLD_NOLOAD },
67		{ RTLD_PARENT,		MSG_RTLD_PARENT },
68		{ RTLD_GROUP,		MSG_RTLD_GROUP },
69		{ RTLD_WORLD,		MSG_RTLD_WORLD },
70		{ RTLD_NODELETE,	MSG_RTLD_NODELETE },
71		{ RTLD_FIRST,		MSG_RTLD_FIRST },
72		{ RTLD_CONFGEN,		MSG_RTLD_CONFGEN },
73		{ 0,			0 }
74	};
75	static const char *leading_str_arr[3];
76	static CONV_EXPN_FIELD_ARG conv_arg = {
77	    NULL, sizeof (dl_mode_buf->buf), leading_str_arr };
78
79	const char **lstr = leading_str_arr;
80
81	conv_arg.buf = dl_mode_buf->buf;
82	conv_arg.oflags = conv_arg.rflags = mode;
83
84
85	if (mode & RTLD_NOW) {
86		*lstr++ = MSG_ORIG(MSG_RTLD_NOW);
87	} else if ((mode & RTLD_LAZY) || fabricate) {
88		*lstr++ = MSG_ORIG(MSG_RTLD_LAZY);
89	}
90	if (mode & RTLD_GLOBAL) {
91		*lstr++ = MSG_ORIG(MSG_RTLD_GLOBAL);
92	} else if (fabricate) {
93		*lstr++ = MSG_ORIG(MSG_RTLD_LOCAL);
94	}
95	*lstr = NULL;
96	conv_arg.oflags = mode;
97	conv_arg.rflags = mode & ~(RTLD_LAZY | RTLD_NOW | RTLD_GLOBAL);
98
99	(void) conv_expn_field(&conv_arg, vda, 0);
100
101	return ((const char *)dl_mode_buf->buf);
102}
103
104/*
105 * Note: We can use two different sets of prefix/separator/suffix
106 * strings in conv_dl_flag(), depending on the value of the separator
107 * argument. To size the buffer, I use the default prefix and suffix
108 * sizes, and the alternate separator size, because they are larger.
109 */
110
111#define	FLAGSZ	CONV_EXPN_FIELD_DEF_PREFIX_SIZE + \
112		MSG_RTLD_REL_RELATIVE_SIZE +	MSG_GBL_SEP_SIZE + \
113		MSG_RTLD_REL_EXEC_SIZE +	MSG_GBL_SEP_SIZE + \
114		MSG_RTLD_REL_DEPENDS_SIZE +	MSG_GBL_SEP_SIZE + \
115		MSG_RTLD_REL_PRELOAD_SIZE +	MSG_GBL_SEP_SIZE + \
116		MSG_RTLD_REL_SELF_SIZE +	MSG_GBL_SEP_SIZE + \
117		MSG_RTLD_REL_WEAK_SIZE +	MSG_GBL_SEP_SIZE + \
118		MSG_RTLD_MEMORY_SIZE +		MSG_GBL_SEP_SIZE + \
119		MSG_RTLD_STRIP_SIZE +		MSG_GBL_SEP_SIZE + \
120		MSG_RTLD_NOHEAP_SIZE +		MSG_GBL_SEP_SIZE + \
121		MSG_RTLD_CONFSET_SIZE + \
122		CONV_INV_BUFSIZE + CONV_EXPN_FIELD_DEF_SUFFIX_SIZE
123
124/*
125 * Ensure that Conv_dl_flag_buf_t is large enough:
126 *
127 * FLAGSZ is the real minimum size of the buffer required by conv_dl_flag().
128 * However, Conv_dl_flag_buf_t uses CONV_DL_FLAG_BUFSIZE to set the
129 * buffer size. We do things this way because the definition of FLAGSZ uses
130 * information that is not available in the environment of other programs
131 * that include the conv.h header file.
132 */
133#if (CONV_DL_FLAG_BUFSIZE != FLAGSZ) && !defined(__lint)
134#define	REPORT_BUFSIZE FLAGSZ
135#include "report_bufsize.h"
136#error "CONV_DL_FLAG_BUFSIZE does not match FLAGSZ"
137#endif
138
139/*
140 * String conversion routine for dldump() flags.
141 * crle(1) uses this routine to generate update information, and in this case
142 * we build a "|" separated string.
143 */
144const char *
145conv_dl_flag(int flags, Conv_fmt_flags_t fmt_flags,
146    Conv_dl_flag_buf_t *dl_flag_buf)
147{
148	static const Val_desc vda[] = {
149		{ RTLD_REL_RELATIVE,	MSG_RTLD_REL_RELATIVE },
150		{ RTLD_REL_EXEC,	MSG_RTLD_REL_EXEC },
151		{ RTLD_REL_DEPENDS,	MSG_RTLD_REL_DEPENDS },
152		{ RTLD_REL_PRELOAD,	MSG_RTLD_REL_PRELOAD },
153		{ RTLD_REL_SELF,	MSG_RTLD_REL_SELF },
154		{ RTLD_REL_WEAK,	MSG_RTLD_REL_WEAK },
155		{ RTLD_MEMORY,		MSG_RTLD_MEMORY },
156		{ RTLD_STRIP,		MSG_RTLD_STRIP },
157		{ RTLD_NOHEAP,		MSG_RTLD_NOHEAP },
158		{ RTLD_CONFSET,		MSG_RTLD_CONFSET },
159		{ 0,			0 }
160	};
161	static const char *leading_str_arr[2];
162	static CONV_EXPN_FIELD_ARG conv_arg = {
163	    NULL, sizeof (dl_flag_buf->buf), leading_str_arr };
164
165	const char **lstr = leading_str_arr;
166
167	if (flags == 0)
168		return (MSG_ORIG(MSG_GBL_ZERO));
169
170	conv_arg.buf = dl_flag_buf->buf;
171	if (CONV_TYPE_FMT_ALT(fmt_flags) == CONV_FMT_ALT_CRLE) {
172		conv_arg.prefix = conv_arg.suffix = MSG_ORIG(MSG_GBL_QUOTE);
173		conv_arg.sep = MSG_ORIG(MSG_GBL_SEP);
174	} else {		/* Use default delimiters */
175		conv_arg.prefix = conv_arg.suffix = conv_arg.sep = NULL;
176	}
177
178	if ((flags & RTLD_REL_ALL) == RTLD_REL_ALL) {
179		*lstr++ = MSG_ORIG(MSG_RTLD_REL_ALL);
180		flags &= ~RTLD_REL_ALL;
181	}
182	*lstr = NULL;
183	conv_arg.oflags = conv_arg.rflags = flags;
184
185	(void) conv_expn_field(&conv_arg, vda, fmt_flags);
186
187	return ((const char *)dl_flag_buf->buf);
188}
189