xref: /titanic_52/usr/src/cmd/sgs/moe/common/moe.c (revision bdfc6d18da790deeec2e0eb09c625902defe2498)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 #include <dlfcn.h>
29 #include <link.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <stdarg.h>
33 #include <libintl.h>
34 #include <locale.h>
35 #include <conv.h>
36 #include <msg.h>
37 
38 void
39 locale()
40 {
41 	static int	localeinit = 0;
42 
43 	/*
44 	 * Defer localization overhead until a localized message, is required.
45 	 * For successful specific (32-bit or 64-bit) commands, none of this
46 	 * overhead should be incurred.
47 	 */
48 	if (localeinit++)
49 		return;
50 
51 	(void) setlocale(LC_MESSAGES, MSG_ORIG(MSG_STR_EMPTY));
52 	(void) textdomain(MSG_ORIG(MSG_SUNW_OST_SGS));
53 }
54 
55 const char *
56 _moe_msg(Msg mid)
57 {
58 	return (gettext(MSG_ORIG(mid)));
59 }
60 
61 /*
62  * Error messages from ld.so.1 are formatted as:
63  *
64  *	ld.so.1: app-name: fatal: ....
65  *
66  * Here, we skip over these three components.  Thus the message a little less
67  * hostile when displayed by moe().  Really, it would be nice to have some
68  * flexibility over what ld.so.1 displays.
69  */
70 static char *
71 trim_msg(char *str)
72 {
73 	char	*ptr = str;
74 	int	cnt = 0;
75 
76 	/*
77 	 * Skip the first three components.
78 	 */
79 	while (*ptr) {
80 		if (*ptr == ':') {
81 			if (++cnt == 3)
82 				break;
83 		}
84 		ptr++;
85 	}
86 	if (*ptr == '\0')
87 		return (str);
88 	else
89 		return (ptr + 2);
90 }
91 
92 #define	ONLY32	1
93 #define	ONLY64	2
94 
95 static int
96 openlib(const char *prog, const char *name, int class, int silent, int verbose)
97 {
98 	Link_map	*lmp;
99 	void		*handle;
100 	const char	*modestr;
101 
102 	/*
103 	 * If the class of object is required, localize the prefix message.
104 	 */
105 	if (class) {
106 		locale();
107 #if	defined(_LP64)
108 		modestr = MSG_INTL(MSG_PRE_64);
109 #else
110 		modestr = MSG_INTL(MSG_PRE_32);
111 #endif
112 	} else
113 		modestr = MSG_ORIG(MSG_STR_EMPTY);
114 
115 
116 	/*
117 	 * Open the optimal object, and determine its full name from the
118 	 * returned handle.  Borrow the internal mode, RTLD_CONFGEN, from
119 	 * crle(1).  This flag allows us to process incomplete objects, as
120 	 * would occur if the object couldn't find its dependencies or relocate
121 	 * itself.
122 	 */
123 	if ((handle = dlmopen(LM_ID_NEWLM, name,
124 	    (RTLD_FIRST | RTLD_CONFGEN | RTLD_LAZY))) == 0) {
125 		if (verbose)
126 			(void) fprintf(stderr, MSG_ORIG(MSG_FMT_VERBOSE), prog,
127 			    modestr, trim_msg(dlerror()));
128 			(void) fflush(stderr);
129 		return (1);
130 	}
131 	if (dlinfo(handle, RTLD_DI_LINKMAP, &lmp) == -1) {
132 		if (verbose)
133 			(void) fprintf(stderr, MSG_ORIG(MSG_FMT_VERBOSE), prog,
134 			    modestr, trim_msg(dlerror()));
135 			(void) fflush(stderr);
136 		return (1);
137 	}
138 
139 	if (silent == 0) {
140 		if (verbose)
141 			(void) printf(MSG_ORIG(MSG_FMT_VERBOSE), prog, modestr,
142 			    lmp->l_name);
143 		else
144 			(void) printf(MSG_ORIG(MSG_FMT_SIMPLE), modestr,
145 			    lmp->l_name);
146 		(void) fflush(stdout);
147 	}
148 
149 	(void) dlclose(handle);
150 	return (0);
151 }
152 
153 int
154 /* ARGSUSED2 */
155 main(int argc, char **argv, char **envp)
156 {
157 	int	var, verbose = 0, silent = 0, error = 0, mode = 0, class = 0;
158 	char	*prog;
159 
160 	if ((prog = strrchr(argv[0], '/')) == 0)
161 		prog = argv[0];
162 	else
163 		prog++;
164 
165 	opterr = 0;
166 	while ((var = getopt(argc, argv, MSG_ORIG(MSG_STR_OPTIONS))) != EOF) {
167 		switch (var) {
168 		case 'c':
169 			class++;
170 			break;
171 		case '3':
172 #if	!defined(_LP64)
173 			if ((optarg[0] == '2') && (mode == 0))
174 				mode = ONLY32;
175 			else
176 #endif
177 				error++;
178 			break;
179 		case '6':
180 			if ((optarg[0] == '4') && (mode == 0))
181 				mode = ONLY64;
182 			else
183 				error++;
184 			break;
185 		case 's':
186 			if (verbose == 0)
187 				silent++;
188 			else
189 				error++;
190 			break;
191 		case 'v':
192 			if (silent == 0)
193 				verbose++;
194 			else
195 				error++;
196 			break;
197 		case '?':
198 			error++;
199 			break;
200 		default:
201 			break;
202 		}
203 	}
204 	if (error || ((argc - optind) == 0)) {
205 		locale();
206 		(void) fprintf(stderr, MSG_INTL(MSG_ARG_USAGE), prog);
207 		return (1);
208 	}
209 	if (silent)
210 		class = 0;
211 
212 	/*
213 	 * Process any 32-bit expansion.
214 	 */
215 #if	!defined(_LP64)
216 	if (mode != ONLY64) {
217 #endif
218 		if (openlib(prog, argv[optind], class, silent, verbose) != 0)
219 			if (mode)
220 				error++;
221 #if	!defined(_LP64)
222 	}
223 #endif
224 	if (mode == ONLY32)
225 		return (0);
226 
227 	/*
228 	 * Re-exec ourselves to process any 64-bit expansion.
229 	 */
230 #if	!defined(__sparcv9) && !defined(__amd64)
231 	conv_check_native(argv, envp);
232 #endif
233 	return (error);
234 }
235