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/* ltdl.c -- system independent dlopen wrapper |
/* ltdl.c -- system independent dlopen wrapper |
2 |
Copyright (C) 1998-1999 Free Software Foundation, Inc. |
Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc. |
3 |
Originally by Thomas Tanner <tanner@ffii.org> |
Originally by Thomas Tanner <tanner@ffii.org> |
4 |
This file is part of GNU Libtool. |
This file is part of GNU Libtool. |
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|
|
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This library is free software; you can redistribute it and/or |
This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Library General Public |
modify it under the terms of the GNU Lesser General Public |
8 |
License as published by the Free Software Foundation; either |
License as published by the Free Software Foundation; either |
9 |
version 2 of the License, or (at your option) any later version. |
version 2 of the License, or (at your option) any later version. |
10 |
|
|
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As a special exception to the GNU Library General Public License, |
As a special exception to the GNU Lesser General Public License, |
12 |
if you distribute this file as part of a program that uses GNU libtool |
if you distribute this file as part of a program or library that |
13 |
to create libraries and programs, you may include it under the same |
is built using GNU libtool, you may include it under the same |
14 |
distribution terms that you use for the rest of that program. |
distribution terms that you use for the rest of that program. |
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|
|
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This library is distributed in the hope that it will be useful, |
This library is distributed in the hope that it will be useful, |
17 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
19 |
Library General Public License for more details. |
Lesser General Public License for more details. |
20 |
|
|
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You should have received a copy of the GNU Library General Public |
You should have received a copy of the GNU Lesser General Public |
22 |
License along with this library; if not, write to the Free Software |
License along with this library; if not, write to the Free Software |
23 |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA |
02111-1307 USA |
|
*/ |
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#define _LTDL_COMPILE_ |
*/ |
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#if HAVE_CONFIG_H |
#if HAVE_CONFIG_H |
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#include <config.h> |
# include <config.h> |
30 |
#endif |
#endif |
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#if HAVE_STRING_H |
#if HAVE_UNISTD_H |
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#include <string.h> |
# include <unistd.h> |
34 |
#endif |
#endif |
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#if HAVE_STRINGS_H |
#if HAVE_STDIO_H |
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#include <strings.h> |
# include <stdio.h> |
38 |
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#endif |
39 |
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40 |
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#if HAVE_STDLIB_H |
41 |
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# include <stdlib.h> |
42 |
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#endif |
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44 |
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#if HAVE_STRING_H |
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# include <string.h> |
46 |
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#else |
47 |
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# if HAVE_STRINGS_H |
48 |
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# include <strings.h> |
49 |
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# endif |
50 |
#endif |
#endif |
51 |
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52 |
#if HAVE_CTYPE_H |
#if HAVE_CTYPE_H |
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#include <ctype.h> |
# include <ctype.h> |
54 |
#endif |
#endif |
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56 |
#if HAVE_MALLOC_H |
#if HAVE_MALLOC_H |
57 |
#include <malloc.h> |
# include <malloc.h> |
58 |
#endif |
#endif |
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#if HAVE_MEMORY_H |
#if HAVE_MEMORY_H |
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#include <memory.h> |
# include <memory.h> |
62 |
#endif |
#endif |
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#if HAVE_STDLIB_H |
#if HAVE_ERRNO_H |
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#include <stdlib.h> |
# include <errno.h> |
66 |
#endif |
#endif |
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|
68 |
#if HAVE_STDIO_H |
#if HAVE_DIRENT_H |
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#include <stdio.h> |
# include <dirent.h> |
70 |
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# define LT_D_NAMLEN(dirent) (strlen((dirent)->d_name)) |
71 |
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#else |
72 |
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# define dirent direct |
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# define LT_D_NAMLEN(dirent) ((dirent)->d_namlen) |
74 |
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# if HAVE_SYS_NDIR_H |
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# include <sys/ndir.h> |
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# endif |
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# if HAVE_SYS_DIR_H |
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# include <sys/dir.h> |
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# endif |
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# if HAVE_NDIR_H |
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# include <ndir.h> |
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# endif |
83 |
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#endif |
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#if HAVE_ARGZ_H |
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# include <argz.h> |
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#endif |
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#if HAVE_ASSERT_H |
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# include <assert.h> |
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#else |
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# define assert(arg) ((void) 0) |
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#endif |
#endif |
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#include "ltdl.h" |
#include "ltdl.h" |
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/* max. filename length */ |
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#ifndef LTDL_FILENAME_MAX |
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#define LTDL_FILENAME_MAX 1024 |
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/* --- WINDOWS SUPPORT --- */ |
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#ifdef DLL_EXPORT |
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# define LT_GLOBAL_DATA __declspec(dllexport) |
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#else |
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# define LT_GLOBAL_DATA |
107 |
#endif |
#endif |
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#undef LTDL_READTEXT_MODE |
|
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/* fopen() mode flags for reading a text file */ |
/* fopen() mode flags for reading a text file */ |
110 |
#ifdef _WIN32 |
#undef LT_READTEXT_MODE |
111 |
#define LTDL_READTEXT_MODE "rt" |
#ifdef __WINDOWS__ |
112 |
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# define LT_READTEXT_MODE "rt" |
113 |
#else |
#else |
114 |
#define LTDL_READTEXT_MODE "r" |
# define LT_READTEXT_MODE "r" |
115 |
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#endif |
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119 |
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120 |
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/* --- MANIFEST CONSTANTS --- */ |
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/* Standard libltdl search path environment variable name */ |
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#undef LTDL_SEARCHPATH_VAR |
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#define LTDL_SEARCHPATH_VAR "LTDL_LIBRARY_PATH" |
126 |
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127 |
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/* Standard libtool archive file extension. */ |
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#undef LTDL_ARCHIVE_EXT |
129 |
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#define LTDL_ARCHIVE_EXT ".la" |
130 |
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131 |
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/* max. filename length */ |
132 |
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#ifndef LT_FILENAME_MAX |
133 |
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# define LT_FILENAME_MAX 1024 |
134 |
#endif |
#endif |
135 |
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#undef LTDL_SYMBOL_LENGTH |
|
136 |
/* This is the maximum symbol size that won't require malloc/free */ |
/* This is the maximum symbol size that won't require malloc/free */ |
137 |
#define LTDL_SYMBOL_LENGTH 128 |
#undef LT_SYMBOL_LENGTH |
138 |
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#define LT_SYMBOL_LENGTH 128 |
139 |
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#undef LTDL_SYMBOL_OVERHEAD |
|
140 |
/* This accounts for the _LTX_ separator */ |
/* This accounts for the _LTX_ separator */ |
141 |
#define LTDL_SYMBOL_OVERHEAD 5 |
#undef LT_SYMBOL_OVERHEAD |
142 |
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#define LT_SYMBOL_OVERHEAD 5 |
143 |
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144 |
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static const char objdir[] = LTDL_OBJDIR; |
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#ifdef LTDL_SHLIB_EXT |
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static const char shlib_ext[] = LTDL_SHLIB_EXT; |
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#endif |
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145 |
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146 |
static const char unknown_error[] = "unknown error"; |
|
147 |
static const char dlopen_not_supported_error[] = "dlopen support not available"; |
/* --- MEMORY HANDLING --- */ |
148 |
static const char file_not_found_error[] = "file not found"; |
|
149 |
static const char no_symbols_error[] = "no symbols defined"; |
|
150 |
static const char cannot_open_error[] = "can't open the module"; |
/* These are the functions used internally. In addition to making |
151 |
static const char cannot_close_error[] = "can't close the module"; |
use of the associated function pointers above, they also perform |
152 |
static const char symbol_error[] = "symbol not found"; |
error handling. */ |
153 |
static const char memory_error[] = "not enough memory"; |
static char *lt_estrdup LT_PARAMS((const char *str)); |
154 |
static const char invalid_handle_error[] = "invalid handle"; |
static lt_ptr lt_emalloc LT_PARAMS((size_t size)); |
155 |
static const char buffer_overflow_error[] = "internal buffer overflow"; |
static lt_ptr lt_erealloc LT_PARAMS((lt_ptr addr, size_t size)); |
156 |
static const char shutdown_error[] = "library already shutdown"; |
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157 |
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static lt_ptr rpl_realloc LT_PARAMS((lt_ptr ptr, size_t size)); |
158 |
#ifndef HAVE_PRELOADED_SYMBOLS |
|
159 |
/* If libtool won't define it, we'd better do */ |
/* These are the pointers that can be changed by the caller: */ |
160 |
const lt_dlsymlist lt_preloaded_symbols[1] = { { 0, 0 } }; |
LT_GLOBAL_DATA lt_ptr (*scm_lt_dlmalloc) LT_PARAMS((size_t size)) |
161 |
#endif |
= (lt_ptr (*) LT_PARAMS((size_t))) malloc; |
162 |
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LT_GLOBAL_DATA lt_ptr (*scm_lt_dlrealloc) LT_PARAMS((lt_ptr ptr, size_t size)) |
163 |
static const char *last_error = 0; |
= (lt_ptr (*) LT_PARAMS((lt_ptr, size_t))) rpl_realloc; |
164 |
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LT_GLOBAL_DATA void (*scm_lt_dlfree) LT_PARAMS((lt_ptr ptr)) |
165 |
lt_ptr_t (*lt_dlmalloc) LTDL_PARAMS((size_t size)) = (lt_ptr_t(*)LTDL_PARAMS((size_t)))malloc; |
= (void (*) LT_PARAMS((lt_ptr))) free; |
166 |
void (*lt_dlfree) LTDL_PARAMS((lt_ptr_t ptr)) = (void(*)LTDL_PARAMS((lt_ptr_t)))free; |
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167 |
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/* The following macros reduce the amount of typing needed to cast |
168 |
typedef struct lt_dltype_t { |
assigned memory. */ |
169 |
struct lt_dltype_t *next; |
#define LT_DLMALLOC(tp, n) ((tp *) scm_lt_dlmalloc ((n) * sizeof(tp))) |
170 |
const char *sym_prefix; /* prefix for symbols */ |
#define LT_DLREALLOC(tp, p, n) ((tp *) rpl_realloc ((p), (n) * sizeof(tp))) |
171 |
int (*mod_init) LTDL_PARAMS((void)); |
#define LT_DLFREE(p) \ |
172 |
int (*mod_exit) LTDL_PARAMS((void)); |
LT_STMT_START { if (p) (p) = (scm_lt_dlfree (p), (lt_ptr) 0); } LT_STMT_END |
173 |
int (*lib_open) LTDL_PARAMS((lt_dlhandle handle, const char *filename)); |
|
174 |
int (*lib_close) LTDL_PARAMS((lt_dlhandle handle)); |
#define LT_EMALLOC(tp, n) ((tp *) lt_emalloc ((n) * sizeof(tp))) |
175 |
lt_ptr_t (*find_sym) LTDL_PARAMS((lt_dlhandle handle, const char *symbol)); |
#define LT_EREALLOC(tp, p, n) ((tp *) lt_erealloc ((p), (n) * sizeof(tp))) |
176 |
} lt_dltype_t; |
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177 |
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#define LT_DLMEM_REASSIGN(p, q) LT_STMT_START { \ |
178 |
#define LTDL_TYPE_TOP 0 |
if ((p) != (q)) { scm_lt_dlfree (p); (p) = (q); (q) = 0; } \ |
179 |
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} LT_STMT_END |
180 |
typedef struct lt_dlhandle_t { |
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181 |
struct lt_dlhandle_t *next; |
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182 |
lt_dltype_t *type; /* dlopening interface */ |
/* --- REPLACEMENT FUNCTIONS --- */ |
183 |
char *filename; /* file name */ |
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char *name; /* module name */ |
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int usage; /* usage */ |
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int depcount; /* number of dependencies */ |
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lt_dlhandle *deplibs; /* dependencies */ |
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lt_ptr_t handle; /* system handle */ |
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lt_ptr_t system; /* system specific data */ |
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} lt_dlhandle_t; |
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184 |
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185 |
#undef strdup |
#undef strdup |
186 |
#define strdup xstrdup |
#define strdup rpl_strdup |
187 |
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188 |
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static char *strdup LT_PARAMS((const char *str)); |
189 |
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190 |
static inline char * |
char * |
191 |
strdup(str) |
strdup(str) |
192 |
const char *str; |
const char *str; |
193 |
{ |
{ |
194 |
char *tmp; |
char *tmp = 0; |
195 |
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|
196 |
if (!str) |
if (str) |
197 |
return 0; |
{ |
198 |
tmp = (char*) lt_dlmalloc(strlen(str)+1); |
tmp = LT_DLMALLOC (char, 1+ strlen (str)); |
199 |
if (tmp) |
if (tmp) |
200 |
strcpy(tmp, str); |
{ |
201 |
return tmp; |
strcpy(tmp, str); |
202 |
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} |
203 |
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} |
204 |
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205 |
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return tmp; |
206 |
} |
} |
207 |
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#if ! HAVE_STRCHR |
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208 |
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209 |
# if HAVE_INDEX |
#if ! HAVE_STRCMP |
210 |
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211 |
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#undef strcmp |
212 |
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#define strcmp rpl_strcmp |
213 |
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214 |
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static int strcmp LT_PARAMS((const char *str1, const char *str2)); |
215 |
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216 |
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int |
217 |
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strcmp (str1, str2) |
218 |
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const char *str1; |
219 |
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const char *str2; |
220 |
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{ |
221 |
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if (str1 == str2) |
222 |
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return 0; |
223 |
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if (str1 == 0) |
224 |
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return -1; |
225 |
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if (str2 == 0) |
226 |
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return 1; |
227 |
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228 |
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for (;*str1 && *str2; ++str1, ++str2) |
229 |
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{ |
230 |
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if (*str1 != *str2) |
231 |
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break; |
232 |
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} |
233 |
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234 |
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return (int)(*str1 - *str2); |
235 |
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} |
236 |
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#endif |
237 |
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238 |
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239 |
# define strchr index |
#if ! HAVE_STRCHR |
240 |
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241 |
# else |
# if HAVE_INDEX |
242 |
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# define strchr index |
243 |
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# else |
244 |
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# define strchr rpl_strchr |
245 |
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|
246 |
# define strchr xstrchr |
static const char *strchr LT_PARAMS((const char *str, int ch)); |
247 |
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248 |
static inline const char* |
const char* |
249 |
strchr(str, ch) |
strchr(str, ch) |
250 |
const char *str; |
const char *str; |
251 |
int ch; |
int ch; |
252 |
{ |
{ |
253 |
const char *p; |
const char *p; |
254 |
|
|
255 |
for (p = str; *p != (char)ch && *p != '\0'; p++) |
for (p = str; *p != (char)ch && *p != LT_EOS_CHAR; ++p) |
256 |
/*NOWORK*/; |
/*NOWORK*/; |
257 |
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|
258 |
return (*p == (char)ch) ? p : 0; |
return (*p == (char)ch) ? p : 0; |
259 |
} |
} |
260 |
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261 |
# endif |
# endif |
262 |
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#endif /* !HAVE_STRCHR */ |
263 |
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#endif |
|
264 |
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265 |
#if ! HAVE_STRRCHR |
#if ! HAVE_STRRCHR |
266 |
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|
267 |
# if HAVE_RINDEX |
# if HAVE_RINDEX |
268 |
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# define strrchr rindex |
269 |
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# else |
270 |
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# define strrchr rpl_strrchr |
271 |
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272 |
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static const char *strrchr LT_PARAMS((const char *str, int ch)); |
273 |
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274 |
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const char* |
275 |
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strrchr(str, ch) |
276 |
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const char *str; |
277 |
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int ch; |
278 |
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{ |
279 |
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const char *p, *q = 0; |
280 |
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|
281 |
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for (p = str; *p != LT_EOS_CHAR; ++p) |
282 |
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{ |
283 |
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if (*p == (char) ch) |
284 |
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{ |
285 |
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q = p; |
286 |
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} |
287 |
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} |
288 |
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289 |
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return q; |
290 |
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} |
291 |
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292 |
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# endif |
293 |
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#endif |
294 |
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|
295 |
# define strrchr rindex |
/* NOTE: Neither bcopy nor the memcpy implementation below can |
296 |
|
reliably handle copying in overlapping areas of memory. Use |
297 |
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memmove (for which there is a fallback implmentation below) |
298 |
|
if you need that behaviour. */ |
299 |
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#if ! HAVE_MEMCPY |
300 |
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|
301 |
# else |
# if HAVE_BCOPY |
302 |
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# define memcpy(dest, src, size) bcopy (src, dest, size) |
303 |
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# else |
304 |
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# define memcpy rpl_memcpy |
305 |
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|
306 |
# define strrchr xstrrchr |
static lt_ptr memcpy LT_PARAMS((lt_ptr dest, const lt_ptr src, size_t size)); |
307 |
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|
308 |
static inline const char* |
lt_ptr |
309 |
strrchr(str, ch) |
memcpy (dest, src, size) |
310 |
const char *str; |
lt_ptr dest; |
311 |
int ch; |
const lt_ptr src; |
312 |
|
size_t size; |
313 |
{ |
{ |
314 |
const char *p; |
size_t i = 0; |
315 |
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|
316 |
for (p = str; *p != '\0'; p++) |
for (i = 0; i < size; ++i) |
317 |
/*NOWORK*/; |
{ |
318 |
|
dest[i] = src[i]; |
319 |
|
} |
320 |
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|
321 |
while (*p != (char)ch && p >= str) |
return dest; |
322 |
p--; |
} |
323 |
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324 |
|
# endif /* !HAVE_BCOPY */ |
325 |
|
#endif /* !HAVE_MEMCPY */ |
326 |
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|
327 |
|
#if ! HAVE_MEMMOVE |
328 |
|
# define memmove rpl_memmove |
329 |
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|
330 |
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static lt_ptr memmove LT_PARAMS((lt_ptr dest, const lt_ptr src, size_t size)); |
331 |
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|
332 |
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lt_ptr |
333 |
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memmove (dest, src, size) |
334 |
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lt_ptr dest; |
335 |
|
const lt_ptr src; |
336 |
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size_t size; |
337 |
|
{ |
338 |
|
size_t i; |
339 |
|
|
340 |
|
if (dest < src) |
341 |
|
for (i = 0; i < size; ++i) |
342 |
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{ |
343 |
|
dest[i] = src[i]; |
344 |
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} |
345 |
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else if (dest > src) |
346 |
|
for (i = size -1; i >= 0; --i) |
347 |
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{ |
348 |
|
dest[i] = src[i]; |
349 |
|
} |
350 |
|
|
351 |
return (*p == (char)ch) ? p : 0; |
return dest; |
352 |
} |
} |
353 |
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|
354 |
# endif |
#endif /* !HAVE_MEMMOVE */ |
355 |
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|
356 |
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|
357 |
|
/* According to Alexandre Oliva <oliva@lsd.ic.unicamp.br>, |
358 |
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``realloc is not entirely portable'' |
359 |
|
In any case we want to use the allocator supplied by the user without |
360 |
|
burdening them with an scm_lt_dlrealloc function pointer to maintain. |
361 |
|
Instead implement our own version (with known boundary conditions) |
362 |
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using scm_lt_dlmalloc and scm_lt_dlfree. */ |
363 |
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|
364 |
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#undef realloc |
365 |
|
#define realloc rpl_realloc |
366 |
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|
367 |
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lt_ptr |
368 |
|
realloc (ptr, size) |
369 |
|
lt_ptr ptr; |
370 |
|
size_t size; |
371 |
|
{ |
372 |
|
if (size <= 0) |
373 |
|
{ |
374 |
|
/* For zero or less bytes, free the original memory */ |
375 |
|
if (ptr != 0) |
376 |
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{ |
377 |
|
scm_lt_dlfree (ptr); |
378 |
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} |
379 |
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|
380 |
|
return (lt_ptr) 0; |
381 |
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} |
382 |
|
else if (ptr == 0) |
383 |
|
{ |
384 |
|
/* Allow reallocation of a NULL pointer. */ |
385 |
|
return scm_lt_dlmalloc (size); |
386 |
|
} |
387 |
|
else |
388 |
|
{ |
389 |
|
/* Allocate a new block, copy and free the old block. */ |
390 |
|
lt_ptr mem = scm_lt_dlmalloc (size); |
391 |
|
|
392 |
|
if (mem) |
393 |
|
{ |
394 |
|
memcpy (mem, ptr, size); |
395 |
|
scm_lt_dlfree (ptr); |
396 |
|
} |
397 |
|
|
398 |
|
/* Note that the contents of PTR are not damaged if there is |
399 |
|
insufficient memory to realloc. */ |
400 |
|
return mem; |
401 |
|
} |
402 |
|
} |
403 |
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|
404 |
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|
405 |
|
#if ! HAVE_ARGZ_APPEND |
406 |
|
# define argz_append rpl_argz_append |
407 |
|
|
408 |
|
static error_t argz_append LT_PARAMS((char **pargz, size_t *pargz_len, |
409 |
|
const char *buf, size_t buf_len)); |
410 |
|
|
411 |
|
error_t |
412 |
|
argz_append (pargz, pargz_len, buf, buf_len) |
413 |
|
char **pargz; |
414 |
|
size_t *pargz_len; |
415 |
|
const char *buf; |
416 |
|
size_t buf_len; |
417 |
|
{ |
418 |
|
size_t argz_len; |
419 |
|
char *argz; |
420 |
|
|
421 |
|
assert (pargz); |
422 |
|
assert (pargz_len); |
423 |
|
assert ((*pargz && *pargz_len) || (!*pargz && !*pargz_len)); |
424 |
|
|
425 |
|
/* If nothing needs to be appended, no more work is required. */ |
426 |
|
if (buf_len == 0) |
427 |
|
return 0; |
428 |
|
|
429 |
|
/* Ensure there is enough room to append BUF_LEN. */ |
430 |
|
argz_len = *pargz_len + buf_len; |
431 |
|
argz = LT_DLREALLOC (char, *pargz, argz_len); |
432 |
|
if (!argz) |
433 |
|
return ENOMEM; |
434 |
|
|
435 |
|
/* Copy characters from BUF after terminating '\0' in ARGZ. */ |
436 |
|
memcpy (argz + *pargz_len, buf, buf_len); |
437 |
|
|
438 |
|
/* Assign new values. */ |
439 |
|
*pargz = argz; |
440 |
|
*pargz_len = argz_len; |
441 |
|
|
442 |
|
return 0; |
443 |
|
} |
444 |
|
#endif /* !HAVE_ARGZ_APPEND */ |
445 |
|
|
446 |
|
|
447 |
|
#if ! HAVE_ARGZ_CREATE_SEP |
448 |
|
# define argz_create_sep rpl_argz_create_sep |
449 |
|
|
450 |
|
static error_t argz_create_sep LT_PARAMS((const char *str, int delim, |
451 |
|
char **pargz, size_t *pargz_len)); |
452 |
|
|
453 |
|
error_t |
454 |
|
argz_create_sep (str, delim, pargz, pargz_len) |
455 |
|
const char *str; |
456 |
|
int delim; |
457 |
|
char **pargz; |
458 |
|
size_t *pargz_len; |
459 |
|
{ |
460 |
|
size_t argz_len; |
461 |
|
char *argz = 0; |
462 |
|
|
463 |
|
assert (str); |
464 |
|
assert (pargz); |
465 |
|
assert (pargz_len); |
466 |
|
|
467 |
|
/* Make a copy of STR, but replacing each occurence of |
468 |
|
DELIM with '\0'. */ |
469 |
|
argz_len = 1+ LT_STRLEN (str); |
470 |
|
if (argz_len) |
471 |
|
{ |
472 |
|
const char *p; |
473 |
|
char *q; |
474 |
|
|
475 |
|
argz = LT_DLMALLOC (char, argz_len); |
476 |
|
if (!argz) |
477 |
|
return ENOMEM; |
478 |
|
|
479 |
|
for (p = str, q = argz; *p != LT_EOS_CHAR; ++p) |
480 |
|
{ |
481 |
|
if (*p == delim) |
482 |
|
{ |
483 |
|
/* Ignore leading delimiters, and fold consecutive |
484 |
|
delimiters in STR into a single '\0' in ARGZ. */ |
485 |
|
if ((q > argz) && (q[-1] != LT_EOS_CHAR)) |
486 |
|
*q++ = LT_EOS_CHAR; |
487 |
|
else |
488 |
|
--argz_len; |
489 |
|
} |
490 |
|
else |
491 |
|
*q++ = *p; |
492 |
|
} |
493 |
|
/* Copy terminating LT_EOS_CHAR. */ |
494 |
|
*q = *p; |
495 |
|
} |
496 |
|
|
497 |
|
/* If ARGZ_LEN has shrunk to nothing, release ARGZ's memory. */ |
498 |
|
if (!argz_len) |
499 |
|
LT_DLFREE (argz); |
500 |
|
|
501 |
|
/* Assign new values. */ |
502 |
|
*pargz = argz; |
503 |
|
*pargz_len = argz_len; |
504 |
|
|
505 |
|
return 0; |
506 |
|
} |
507 |
|
#endif /* !HAVE_ARGZ_CREATE_SEP */ |
508 |
|
|
509 |
|
|
510 |
|
#if ! HAVE_ARGZ_INSERT |
511 |
|
# define argz_insert rpl_argz_insert |
512 |
|
|
513 |
|
static error_t argz_insert LT_PARAMS((char **pargz, size_t *pargz_len, |
514 |
|
char *before, const char *entry)); |
515 |
|
|
516 |
|
error_t |
517 |
|
argz_insert (pargz, pargz_len, before, entry) |
518 |
|
char **pargz; |
519 |
|
size_t *pargz_len; |
520 |
|
char *before; |
521 |
|
const char *entry; |
522 |
|
{ |
523 |
|
assert (pargz); |
524 |
|
assert (pargz_len); |
525 |
|
assert (entry && *entry); |
526 |
|
|
527 |
|
/* Either PARGZ/PARGZ_LEN is empty and BEFORE is NULL, |
528 |
|
or BEFORE points into an address within the ARGZ vector. */ |
529 |
|
assert ((!*pargz && !*pargz_len && !before) |
530 |
|
|| ((*pargz <= before) && (before < (*pargz + *pargz_len)))); |
531 |
|
|
532 |
|
/* No BEFORE address indicates ENTRY should be inserted after the |
533 |
|
current last element. */ |
534 |
|
if (!before) |
535 |
|
return argz_append (pargz, pargz_len, entry, 1+ LT_STRLEN (entry)); |
536 |
|
|
537 |
|
/* This probably indicates a programmer error, but to preserve |
538 |
|
semantics, scan back to the start of an entry if BEFORE points |
539 |
|
into the middle of it. */ |
540 |
|
while ((before >= *pargz) && (before[-1] != LT_EOS_CHAR)) |
541 |
|
--before; |
542 |
|
|
543 |
|
{ |
544 |
|
size_t entry_len = 1+ LT_STRLEN (entry); |
545 |
|
size_t argz_len = *pargz_len + entry_len; |
546 |
|
size_t offset = before - *pargz; |
547 |
|
char *argz = LT_DLREALLOC (char, *pargz, argz_len); |
548 |
|
|
549 |
|
if (!argz) |
550 |
|
return ENOMEM; |
551 |
|
|
552 |
|
/* Make BEFORE point to the equivalent offset in ARGZ that it |
553 |
|
used to have in *PARGZ incase realloc() moved the block. */ |
554 |
|
before = argz + offset; |
555 |
|
|
556 |
|
/* Move the ARGZ entries starting at BEFORE up into the new |
557 |
|
space at the end -- making room to copy ENTRY into the |
558 |
|
resulting gap. */ |
559 |
|
memmove (before + entry_len, before, *pargz_len - offset); |
560 |
|
memcpy (before, entry, entry_len); |
561 |
|
|
562 |
|
/* Assign new values. */ |
563 |
|
*pargz = argz; |
564 |
|
*pargz_len = argz_len; |
565 |
|
} |
566 |
|
|
567 |
|
return 0; |
568 |
|
} |
569 |
|
#endif /* !HAVE_ARGZ_INSERT */ |
570 |
|
|
571 |
|
|
572 |
|
#if ! HAVE_ARGZ_NEXT |
573 |
|
# define argz_next rpl_argz_next |
574 |
|
|
575 |
|
static char *argz_next LT_PARAMS((char *argz, size_t argz_len, |
576 |
|
const char *entry)); |
577 |
|
|
578 |
|
char * |
579 |
|
argz_next (argz, argz_len, entry) |
580 |
|
char *argz; |
581 |
|
size_t argz_len; |
582 |
|
const char *entry; |
583 |
|
{ |
584 |
|
assert ((argz && argz_len) || (!argz && !argz_len)); |
585 |
|
|
586 |
|
if (entry) |
587 |
|
{ |
588 |
|
/* Either ARGZ/ARGZ_LEN is empty, or ENTRY points into an address |
589 |
|
within the ARGZ vector. */ |
590 |
|
assert ((!argz && !argz_len) |
591 |
|
|| ((argz <= entry) && (entry < (argz + argz_len)))); |
592 |
|
|
593 |
|
/* Move to the char immediately after the terminating |
594 |
|
'\0' of ENTRY. */ |
595 |
|
entry = 1+ strchr (entry, LT_EOS_CHAR); |
596 |
|
|
597 |
|
/* Return either the new ENTRY, or else NULL if ARGZ is |
598 |
|
exhausted. */ |
599 |
|
return (entry >= argz + argz_len) ? 0 : (char *) entry; |
600 |
|
} |
601 |
|
else |
602 |
|
{ |
603 |
|
/* This should probably be flagged as a programmer error, |
604 |
|
since starting an argz_next loop with the iterator set |
605 |
|
to ARGZ is safer. To preserve semantics, handle the NULL |
606 |
|
case by returning the start of ARGZ (if any). */ |
607 |
|
if (argz_len > 0) |
608 |
|
return argz; |
609 |
|
else |
610 |
|
return 0; |
611 |
|
} |
612 |
|
} |
613 |
|
#endif /* !HAVE_ARGZ_NEXT */ |
614 |
|
|
615 |
|
|
616 |
|
|
617 |
|
#if ! HAVE_ARGZ_STRINGIFY |
618 |
|
# define argz_stringify rpl_argz_stringify |
619 |
|
|
620 |
|
static void argz_stringify LT_PARAMS((char *argz, size_t argz_len, |
621 |
|
int sep)); |
622 |
|
|
623 |
|
void |
624 |
|
argz_stringify (argz, argz_len, sep) |
625 |
|
char *argz; |
626 |
|
size_t argz_len; |
627 |
|
int sep; |
628 |
|
{ |
629 |
|
assert ((argz && argz_len) || (!argz && !argz_len)); |
630 |
|
|
631 |
|
if (sep) |
632 |
|
{ |
633 |
|
--argz_len; /* don't stringify the terminating EOS */ |
634 |
|
while (--argz_len > 0) |
635 |
|
{ |
636 |
|
if (argz[argz_len] == LT_EOS_CHAR) |
637 |
|
argz[argz_len] = sep; |
638 |
|
} |
639 |
|
} |
640 |
|
} |
641 |
|
#endif /* !HAVE_ARGZ_STRINGIFY */ |
642 |
|
|
643 |
|
|
644 |
|
|
645 |
|
|
646 |
|
/* --- TYPE DEFINITIONS -- */ |
647 |
|
|
648 |
|
|
649 |
|
/* This type is used for the array of caller data sets in each handler. */ |
650 |
|
typedef struct { |
651 |
|
lt_dlcaller_id key; |
652 |
|
lt_ptr data; |
653 |
|
} lt_caller_data; |
654 |
|
|
655 |
|
|
656 |
|
|
657 |
|
|
658 |
|
/* --- OPAQUE STRUCTURES DECLARED IN LTDL.H --- */ |
659 |
|
|
660 |
|
|
661 |
|
/* Extract the diagnostic strings from the error table macro in the same |
662 |
|
order as the enumerated indices in ltdl.h. */ |
663 |
|
|
664 |
|
static const char *scm_lt_dlerror_strings[] = |
665 |
|
{ |
666 |
|
#define LT_ERROR(name, diagnostic) (diagnostic), |
667 |
|
scm_lt_dlerror_table |
668 |
|
#undef LT_ERROR |
669 |
|
|
670 |
|
0 |
671 |
|
}; |
672 |
|
|
673 |
|
/* This structure is used for the list of registered loaders. */ |
674 |
|
struct lt_dlloader { |
675 |
|
struct lt_dlloader *next; |
676 |
|
const char *loader_name; /* identifying name for each loader */ |
677 |
|
const char *sym_prefix; /* prefix for symbols */ |
678 |
|
lt_module_open *module_open; |
679 |
|
lt_module_close *module_close; |
680 |
|
lt_find_sym *find_sym; |
681 |
|
lt_dlloader_exit *dlloader_exit; |
682 |
|
lt_user_data dlloader_data; |
683 |
|
}; |
684 |
|
|
685 |
|
struct lt_dlhandle_struct { |
686 |
|
struct lt_dlhandle_struct *next; |
687 |
|
lt_dlloader *loader; /* dlopening interface */ |
688 |
|
lt_dlinfo info; |
689 |
|
int depcount; /* number of dependencies */ |
690 |
|
lt_dlhandle *deplibs; /* dependencies */ |
691 |
|
lt_module module; /* system module handle */ |
692 |
|
lt_ptr system; /* system specific data */ |
693 |
|
lt_caller_data *caller_data; /* per caller associated data */ |
694 |
|
int flags; /* various boolean stats */ |
695 |
|
}; |
696 |
|
|
697 |
|
/* Various boolean flags can be stored in the flags field of an |
698 |
|
lt_dlhandle_struct... */ |
699 |
|
#define LT_DLGET_FLAG(handle, flag) (((handle)->flags & (flag)) == (flag)) |
700 |
|
#define LT_DLSET_FLAG(handle, flag) ((handle)->flags |= (flag)) |
701 |
|
|
702 |
|
#define LT_DLRESIDENT_FLAG (0x01 << 0) |
703 |
|
/* ...add more flags here... */ |
704 |
|
|
705 |
|
#define LT_DLIS_RESIDENT(handle) LT_DLGET_FLAG(handle, LT_DLRESIDENT_FLAG) |
706 |
|
|
707 |
|
|
708 |
|
#define LT_DLSTRERROR(name) scm_lt_dlerror_strings[LT_CONC(LT_ERROR_,name)] |
709 |
|
|
710 |
|
static const char objdir[] = LTDL_OBJDIR; |
711 |
|
static const char archive_ext[] = LTDL_ARCHIVE_EXT; |
712 |
|
#ifdef LTDL_SHLIB_EXT |
713 |
|
static const char shlib_ext[] = LTDL_SHLIB_EXT; |
714 |
#endif |
#endif |
715 |
|
#ifdef LTDL_SYSSEARCHPATH |
716 |
|
static const char sys_search_path[] = LTDL_SYSSEARCHPATH; |
717 |
|
#endif |
718 |
|
|
719 |
|
|
720 |
|
|
721 |
|
|
722 |
|
/* --- MUTEX LOCKING --- */ |
723 |
|
|
724 |
|
|
725 |
|
/* Macros to make it easier to run the lock functions only if they have |
726 |
|
been registered. The reason for the complicated lock macro is to |
727 |
|
ensure that the stored error message from the last error is not |
728 |
|
accidentally erased if the current function doesn't generate an |
729 |
|
error of its own. */ |
730 |
|
#define LT_DLMUTEX_LOCK() LT_STMT_START { \ |
731 |
|
if (lt_dlmutex_lock_func) (*lt_dlmutex_lock_func)(); \ |
732 |
|
} LT_STMT_END |
733 |
|
#define LT_DLMUTEX_UNLOCK() LT_STMT_START { \ |
734 |
|
if (lt_dlmutex_unlock_func) (*lt_dlmutex_unlock_func)();\ |
735 |
|
} LT_STMT_END |
736 |
|
#define LT_DLMUTEX_SETERROR(errormsg) LT_STMT_START { \ |
737 |
|
if (lt_dlmutex_seterror_func) \ |
738 |
|
(*lt_dlmutex_seterror_func) (errormsg); \ |
739 |
|
else lt_dllast_error = (errormsg); } LT_STMT_END |
740 |
|
#define LT_DLMUTEX_GETERROR(errormsg) LT_STMT_START { \ |
741 |
|
if (lt_dlmutex_seterror_func) \ |
742 |
|
(errormsg) = (*lt_dlmutex_geterror_func) (); \ |
743 |
|
else (errormsg) = lt_dllast_error; } LT_STMT_END |
744 |
|
|
745 |
|
/* The mutex functions stored here are global, and are necessarily the |
746 |
|
same for all threads that wish to share access to libltdl. */ |
747 |
|
static lt_dlmutex_lock *lt_dlmutex_lock_func = 0; |
748 |
|
static lt_dlmutex_unlock *lt_dlmutex_unlock_func = 0; |
749 |
|
static lt_dlmutex_seterror *lt_dlmutex_seterror_func = 0; |
750 |
|
static lt_dlmutex_geterror *lt_dlmutex_geterror_func = 0; |
751 |
|
static const char *lt_dllast_error = 0; |
752 |
|
|
753 |
|
|
754 |
|
/* Either set or reset the mutex functions. Either all the arguments must |
755 |
|
be valid functions, or else all can be NULL to turn off locking entirely. |
756 |
|
The registered functions should be manipulating a static global lock |
757 |
|
from the lock() and unlock() callbacks, which needs to be reentrant. */ |
758 |
|
int |
759 |
|
scm_lt_dlmutex_register (lock, unlock, seterror, geterror) |
760 |
|
lt_dlmutex_lock *lock; |
761 |
|
lt_dlmutex_unlock *unlock; |
762 |
|
lt_dlmutex_seterror *seterror; |
763 |
|
lt_dlmutex_geterror *geterror; |
764 |
|
{ |
765 |
|
lt_dlmutex_unlock *old_unlock = unlock; |
766 |
|
int errors = 0; |
767 |
|
|
768 |
|
/* Lock using the old lock() callback, if any. */ |
769 |
|
LT_DLMUTEX_LOCK (); |
770 |
|
|
771 |
|
if ((lock && unlock && seterror && geterror) |
772 |
|
|| !(lock || unlock || seterror || geterror)) |
773 |
|
{ |
774 |
|
lt_dlmutex_lock_func = lock; |
775 |
|
lt_dlmutex_unlock_func = unlock; |
776 |
|
lt_dlmutex_geterror_func = geterror; |
777 |
|
} |
778 |
|
else |
779 |
|
{ |
780 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_MUTEX_ARGS)); |
781 |
|
++errors; |
782 |
|
} |
783 |
|
|
784 |
|
/* Use the old unlock() callback we saved earlier, if any. Otherwise |
785 |
|
record any errors using internal storage. */ |
786 |
|
if (old_unlock) |
787 |
|
(*old_unlock) (); |
788 |
|
|
789 |
|
/* Return the number of errors encountered during the execution of |
790 |
|
this function. */ |
791 |
|
return errors; |
792 |
|
} |
793 |
|
|
794 |
|
|
795 |
|
|
796 |
|
|
797 |
|
/* --- ERROR HANDLING --- */ |
798 |
|
|
799 |
|
|
800 |
|
static const char **user_error_strings = 0; |
801 |
|
static int errorcount = LT_ERROR_MAX; |
802 |
|
|
803 |
|
int |
804 |
|
scm_lt_dladderror (diagnostic) |
805 |
|
const char *diagnostic; |
806 |
|
{ |
807 |
|
int errindex = 0; |
808 |
|
int result = -1; |
809 |
|
const char **temp = (const char **) 0; |
810 |
|
|
811 |
|
assert (diagnostic); |
812 |
|
|
813 |
|
LT_DLMUTEX_LOCK (); |
814 |
|
|
815 |
|
errindex = errorcount - LT_ERROR_MAX; |
816 |
|
temp = LT_EREALLOC (const char *, user_error_strings, 1 + errindex); |
817 |
|
if (temp) |
818 |
|
{ |
819 |
|
user_error_strings = temp; |
820 |
|
user_error_strings[errindex] = diagnostic; |
821 |
|
result = errorcount++; |
822 |
|
} |
823 |
|
|
824 |
#if HAVE_LIBDL |
LT_DLMUTEX_UNLOCK (); |
825 |
|
|
826 |
|
return result; |
827 |
|
} |
828 |
|
|
829 |
|
int |
830 |
|
scm_lt_dlseterror (errindex) |
831 |
|
int errindex; |
832 |
|
{ |
833 |
|
int errors = 0; |
834 |
|
|
835 |
|
LT_DLMUTEX_LOCK (); |
836 |
|
|
837 |
|
if (errindex >= errorcount || errindex < 0) |
838 |
|
{ |
839 |
|
/* Ack! Error setting the error message! */ |
840 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_ERRORCODE)); |
841 |
|
++errors; |
842 |
|
} |
843 |
|
else if (errindex < LT_ERROR_MAX) |
844 |
|
{ |
845 |
|
/* No error setting the error message! */ |
846 |
|
LT_DLMUTEX_SETERROR (scm_lt_dlerror_strings[errindex]); |
847 |
|
} |
848 |
|
else |
849 |
|
{ |
850 |
|
/* No error setting the error message! */ |
851 |
|
LT_DLMUTEX_SETERROR (user_error_strings[errindex - LT_ERROR_MAX]); |
852 |
|
} |
853 |
|
|
854 |
|
LT_DLMUTEX_UNLOCK (); |
855 |
|
|
856 |
|
return errors; |
857 |
|
} |
858 |
|
|
859 |
|
lt_ptr |
860 |
|
lt_emalloc (size) |
861 |
|
size_t size; |
862 |
|
{ |
863 |
|
lt_ptr mem = scm_lt_dlmalloc (size); |
864 |
|
if (size && !mem) |
865 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); |
866 |
|
return mem; |
867 |
|
} |
868 |
|
|
869 |
|
lt_ptr |
870 |
|
lt_erealloc (addr, size) |
871 |
|
lt_ptr addr; |
872 |
|
size_t size; |
873 |
|
{ |
874 |
|
lt_ptr mem = realloc (addr, size); |
875 |
|
if (size && !mem) |
876 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); |
877 |
|
return mem; |
878 |
|
} |
879 |
|
|
880 |
|
char * |
881 |
|
lt_estrdup (str) |
882 |
|
const char *str; |
883 |
|
{ |
884 |
|
char *dup = strdup (str); |
885 |
|
if (LT_STRLEN (str) && !dup) |
886 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); |
887 |
|
return dup; |
888 |
|
} |
889 |
|
|
890 |
|
|
891 |
|
|
892 |
|
|
893 |
|
/* --- DLOPEN() INTERFACE LOADER --- */ |
894 |
|
|
895 |
|
|
896 |
|
/* The Cygwin dlopen implementation prints a spurious error message to |
897 |
|
stderr if its call to LoadLibrary() fails for any reason. We can |
898 |
|
mitigate this by not using the Cygwin implementation, and falling |
899 |
|
back to our own LoadLibrary() wrapper. */ |
900 |
|
#if HAVE_LIBDL && !defined(__CYGWIN__) |
901 |
|
|
902 |
/* dynamic linking with dlopen/dlsym */ |
/* dynamic linking with dlopen/dlsym */ |
903 |
|
|
904 |
#if HAVE_DLFCN_H |
#if HAVE_DLFCN_H |
905 |
# include <dlfcn.h> |
# include <dlfcn.h> |
906 |
|
#endif |
907 |
|
|
908 |
|
#if HAVE_SYS_DL_H |
909 |
|
# include <sys/dl.h> |
910 |
#endif |
#endif |
911 |
|
|
912 |
#ifdef RTLD_GLOBAL |
#ifdef RTLD_GLOBAL |
913 |
# define LTDL_GLOBAL RTLD_GLOBAL |
# define LT_GLOBAL RTLD_GLOBAL |
914 |
#else |
#else |
915 |
# ifdef DL_GLOBAL |
# ifdef DL_GLOBAL |
916 |
# define LTDL_GLOBAL DL_GLOBAL |
# define LT_GLOBAL DL_GLOBAL |
917 |
# else |
# endif |
918 |
# define LTDL_GLOBAL 0 |
#endif /* !RTLD_GLOBAL */ |
919 |
# endif |
#ifndef LT_GLOBAL |
920 |
#endif |
# define LT_GLOBAL 0 |
921 |
|
#endif /* !LT_GLOBAL */ |
922 |
|
|
923 |
/* We may have to define LTDL_LAZY_OR_NOW in the command line if we |
/* We may have to define LT_LAZY_OR_NOW in the command line if we |
924 |
find out it does not work in some platform. */ |
find out it does not work in some platform. */ |
925 |
#ifndef LTDL_LAZY_OR_NOW |
#ifndef LT_LAZY_OR_NOW |
926 |
# ifdef RTLD_LAZY |
# ifdef RTLD_LAZY |
927 |
# define LTDL_LAZY_OR_NOW RTLD_LAZY |
# define LT_LAZY_OR_NOW RTLD_LAZY |
928 |
# else |
# else |
929 |
# ifdef DL_LAZY |
# ifdef DL_LAZY |
930 |
# define LTDL_LAZY_OR_NOW DL_LAZY |
# define LT_LAZY_OR_NOW DL_LAZY |
931 |
|
# endif |
932 |
|
# endif /* !RTLD_LAZY */ |
933 |
|
#endif |
934 |
|
#ifndef LT_LAZY_OR_NOW |
935 |
|
# ifdef RTLD_NOW |
936 |
|
# define LT_LAZY_OR_NOW RTLD_NOW |
937 |
# else |
# else |
|
# ifdef RTLD_NOW |
|
|
# define LTDL_LAZY_OR_NOW RTLD_NOW |
|
|
# else |
|
938 |
# ifdef DL_NOW |
# ifdef DL_NOW |
939 |
# define LTDL_LAZY_OR_NOW DL_NOW |
# define LT_LAZY_OR_NOW DL_NOW |
|
# else |
|
|
# define LTDL_LAZY_OR_NOW 0 |
|
940 |
# endif |
# endif |
941 |
# endif |
# endif /* !RTLD_NOW */ |
|
# endif |
|
|
# endif |
|
942 |
#endif |
#endif |
943 |
|
#ifndef LT_LAZY_OR_NOW |
944 |
|
# define LT_LAZY_OR_NOW 0 |
945 |
|
#endif /* !LT_LAZY_OR_NOW */ |
946 |
|
|
947 |
static int |
#if HAVE_DLERROR |
948 |
sys_dl_init LTDL_PARAMS((void)) |
# define DLERROR(arg) dlerror () |
949 |
{ |
#else |
950 |
return 0; |
# define DLERROR(arg) LT_DLSTRERROR (arg) |
951 |
} |
#endif |
952 |
|
|
953 |
static int |
static lt_module |
954 |
sys_dl_exit LTDL_PARAMS((void)) |
sys_dl_open (loader_data, filename) |
955 |
|
lt_user_data loader_data; |
956 |
|
const char *filename; |
957 |
{ |
{ |
958 |
return 0; |
lt_module module = dlopen (filename, LT_GLOBAL | LT_LAZY_OR_NOW); |
959 |
|
|
960 |
|
if (!module) |
961 |
|
{ |
962 |
|
LT_DLMUTEX_SETERROR (DLERROR (CANNOT_OPEN)); |
963 |
|
} |
964 |
|
|
965 |
|
return module; |
966 |
} |
} |
967 |
|
|
968 |
static int |
static int |
969 |
sys_dl_open (handle, filename) |
sys_dl_close (loader_data, module) |
970 |
lt_dlhandle handle; |
lt_user_data loader_data; |
971 |
const char *filename; |
lt_module module; |
972 |
{ |
{ |
973 |
handle->handle = dlopen(filename, LTDL_GLOBAL | LTDL_LAZY_OR_NOW); |
int errors = 0; |
974 |
if (!handle->handle) { |
|
975 |
#if HAVE_DLERROR |
if (dlclose (module) != 0) |
976 |
last_error = dlerror(); |
{ |
977 |
#else |
LT_DLMUTEX_SETERROR (DLERROR (CANNOT_CLOSE)); |
978 |
last_error = cannot_open_error; |
++errors; |
979 |
#endif |
} |
980 |
return 1; |
|
981 |
} |
return errors; |
|
return 0; |
|
982 |
} |
} |
983 |
|
|
984 |
static int |
static lt_ptr |
985 |
sys_dl_close (handle) |
sys_dl_sym (loader_data, module, symbol) |
986 |
lt_dlhandle handle; |
lt_user_data loader_data; |
987 |
|
lt_module module; |
988 |
|
const char *symbol; |
989 |
{ |
{ |
990 |
if (dlclose(handle->handle) != 0) { |
lt_ptr address = dlsym (module, symbol); |
|
#if HAVE_DLERROR |
|
|
last_error = dlerror(); |
|
|
#else |
|
|
last_error = cannot_close_error; |
|
|
#endif |
|
|
return 1; |
|
|
} |
|
|
return 0; |
|
|
} |
|
991 |
|
|
992 |
static lt_ptr_t |
if (!address) |
993 |
sys_dl_sym (handle, symbol) |
{ |
994 |
lt_dlhandle handle; |
LT_DLMUTEX_SETERROR (DLERROR (SYMBOL_NOT_FOUND)); |
995 |
const char *symbol; |
} |
996 |
{ |
|
997 |
lt_ptr_t address = dlsym(handle->handle, symbol); |
return address; |
|
|
|
|
if (!address) |
|
|
#if HAVE_DLERROR |
|
|
last_error = dlerror(); |
|
|
#else |
|
|
last_error = symbol_error; |
|
|
#endif |
|
|
return address; |
|
998 |
} |
} |
999 |
|
|
1000 |
static |
static struct lt_user_dlloader sys_dl = |
1001 |
lt_dltype_t |
{ |
1002 |
#ifdef NEED_USCORE |
# ifdef NEED_USCORE |
1003 |
sys_dl = { LTDL_TYPE_TOP, "_", sys_dl_init, sys_dl_exit, |
"_", |
1004 |
sys_dl_open, sys_dl_close, sys_dl_sym }; |
# else |
1005 |
#else |
0, |
1006 |
sys_dl = { LTDL_TYPE_TOP, 0, sys_dl_init, sys_dl_exit, |
# endif |
1007 |
sys_dl_open, sys_dl_close, sys_dl_sym }; |
sys_dl_open, sys_dl_close, sys_dl_sym, 0, 0 }; |
|
#endif |
|
1008 |
|
|
|
#undef LTDL_TYPE_TOP |
|
|
#define LTDL_TYPE_TOP &sys_dl |
|
1009 |
|
|
1010 |
#endif |
#endif /* HAVE_LIBDL */ |
1011 |
|
|
1012 |
|
|
1013 |
|
|
1014 |
|
/* --- SHL_LOAD() INTERFACE LOADER --- */ |
1015 |
|
|
1016 |
#if HAVE_SHL_LOAD |
#if HAVE_SHL_LOAD |
1017 |
|
|
1018 |
/* dynamic linking with shl_load (HP-UX) (comments from gmodule) */ |
/* dynamic linking with shl_load (HP-UX) (comments from gmodule) */ |
1019 |
|
|
1020 |
#ifdef HAVE_DL_H |
#ifdef HAVE_DL_H |
1021 |
#include <dl.h> |
# include <dl.h> |
1022 |
#endif |
#endif |
1023 |
|
|
1024 |
/* some flags are missing on some systems, so we provide |
/* some flags are missing on some systems, so we provide |
1029 |
* BIND_DEFERRED - Delay code symbol resolution until actual reference. |
* BIND_DEFERRED - Delay code symbol resolution until actual reference. |
1030 |
* |
* |
1031 |
* Optionally: |
* Optionally: |
1032 |
* BIND_FIRST - Place the library at the head of the symbol search order. |
* BIND_FIRST - Place the library at the head of the symbol search |
1033 |
* BIND_NONFATAL - The default BIND_IMMEDIATE behavior is to treat all unsatisfied |
* order. |
1034 |
* symbols as fatal. This flag allows binding of unsatisfied code |
* BIND_NONFATAL - The default BIND_IMMEDIATE behavior is to treat all |
1035 |
* symbols to be deferred until use. |
* unsatisfied symbols as fatal. This flag allows |
1036 |
* [Perl: For certain libraries, like DCE, deferred binding often |
* binding of unsatisfied code symbols to be deferred |
1037 |
* causes run time problems. Adding BIND_NONFATAL to BIND_IMMEDIATE |
* until use. |
1038 |
* still allows unresolved references in situations like this.] |
* [Perl: For certain libraries, like DCE, deferred |
1039 |
* BIND_NOSTART - Do not call the initializer for the shared library when the |
* binding often causes run time problems. Adding |
1040 |
* library is loaded, nor on a future call to shl_unload(). |
* BIND_NONFATAL to BIND_IMMEDIATE still allows |
1041 |
* BIND_VERBOSE - Print verbose messages concerning possible unsatisfied symbols. |
* unresolved references in situations like this.] |
1042 |
|
* BIND_NOSTART - Do not call the initializer for the shared library |
1043 |
|
* when the library is loaded, nor on a future call to |
1044 |
|
* shl_unload(). |
1045 |
|
* BIND_VERBOSE - Print verbose messages concerning possible |
1046 |
|
* unsatisfied symbols. |
1047 |
* |
* |
1048 |
* hp9000s700/hp9000s800: |
* hp9000s700/hp9000s800: |
1049 |
* BIND_RESTRICTED - Restrict symbols visible by the library to those present at |
* BIND_RESTRICTED - Restrict symbols visible by the library to those |
1050 |
* library load time. |
* present at library load time. |
1051 |
* DYNAMIC_PATH - Allow the loader to dynamically search for the library specified |
* DYNAMIC_PATH - Allow the loader to dynamically search for the |
1052 |
* by the path argument. |
* library specified by the path argument. |
1053 |
*/ |
*/ |
1054 |
|
|
1055 |
#ifndef DYNAMIC_PATH |
#ifndef DYNAMIC_PATH |
1056 |
#define DYNAMIC_PATH 0 |
# define DYNAMIC_PATH 0 |
1057 |
#endif /* DYNAMIC_PATH */ |
#endif |
1058 |
#ifndef BIND_RESTRICTED |
#ifndef BIND_RESTRICTED |
1059 |
#define BIND_RESTRICTED 0 |
# define BIND_RESTRICTED 0 |
1060 |
#endif /* BIND_RESTRICTED */ |
#endif |
1061 |
|
|
1062 |
#define LTDL_BIND_FLAGS (BIND_IMMEDIATE | BIND_NONFATAL | DYNAMIC_PATH) |
#define LT_BIND_FLAGS (BIND_IMMEDIATE | BIND_NONFATAL | DYNAMIC_PATH) |
1063 |
|
|
1064 |
static int |
static lt_module |
1065 |
sys_shl_init LTDL_PARAMS((void)) |
sys_shl_open (loader_data, filename) |
1066 |
|
lt_user_data loader_data; |
1067 |
|
const char *filename; |
1068 |
{ |
{ |
1069 |
return 0; |
static shl_t self = (shl_t) 0; |
1070 |
|
lt_module module = shl_load (filename, LT_BIND_FLAGS, 0L); |
1071 |
|
|
1072 |
|
/* Since searching for a symbol against a NULL module handle will also |
1073 |
|
look in everything else that was already loaded and exported with |
1074 |
|
the -E compiler flag, we always cache a handle saved before any |
1075 |
|
modules are loaded. */ |
1076 |
|
if (!self) |
1077 |
|
{ |
1078 |
|
lt_ptr address; |
1079 |
|
shl_findsym (&self, "main", TYPE_UNDEFINED, &address); |
1080 |
|
} |
1081 |
|
|
1082 |
|
if (!filename) |
1083 |
|
{ |
1084 |
|
module = self; |
1085 |
|
} |
1086 |
|
else |
1087 |
|
{ |
1088 |
|
module = shl_load (filename, LT_BIND_FLAGS, 0L); |
1089 |
|
|
1090 |
|
if (!module) |
1091 |
|
{ |
1092 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); |
1093 |
|
} |
1094 |
|
} |
1095 |
|
|
1096 |
|
return module; |
1097 |
} |
} |
1098 |
|
|
1099 |
static int |
static int |
1100 |
sys_shl_exit LTDL_PARAMS((void)) |
sys_shl_close (loader_data, module) |
1101 |
|
lt_user_data loader_data; |
1102 |
|
lt_module module; |
1103 |
{ |
{ |
1104 |
return 0; |
int errors = 0; |
1105 |
|
|
1106 |
|
if (module && (shl_unload ((shl_t) (module)) != 0)) |
1107 |
|
{ |
1108 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); |
1109 |
|
++errors; |
1110 |
|
} |
1111 |
|
|
1112 |
|
return errors; |
1113 |
} |
} |
1114 |
|
|
1115 |
static int |
static lt_ptr |
1116 |
sys_shl_open (handle, filename) |
sys_shl_sym (loader_data, module, symbol) |
1117 |
lt_dlhandle handle; |
lt_user_data loader_data; |
1118 |
const char *filename; |
lt_module module; |
1119 |
{ |
const char *symbol; |
1120 |
handle->handle = shl_load(filename, LTDL_BIND_FLAGS, 0L); |
{ |
1121 |
if (!handle->handle) { |
lt_ptr address = 0; |
1122 |
last_error = cannot_open_error; |
|
1123 |
return 1; |
/* sys_shl_open should never return a NULL module handle */ |
1124 |
|
if (module == (lt_module) 0) |
1125 |
|
{ |
1126 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); |
1127 |
|
} |
1128 |
|
else if (!shl_findsym((shl_t*) &module, symbol, TYPE_UNDEFINED, &address)) |
1129 |
|
{ |
1130 |
|
if (!address) |
1131 |
|
{ |
1132 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); |
1133 |
} |
} |
1134 |
return 0; |
} |
1135 |
|
|
1136 |
|
return address; |
1137 |
|
} |
1138 |
|
|
1139 |
|
static struct lt_user_dlloader sys_shl = { |
1140 |
|
0, sys_shl_open, sys_shl_close, sys_shl_sym, 0, 0 |
1141 |
|
}; |
1142 |
|
|
1143 |
|
#endif /* HAVE_SHL_LOAD */ |
1144 |
|
|
1145 |
|
|
1146 |
|
|
1147 |
|
|
1148 |
|
/* --- LOADLIBRARY() INTERFACE LOADER --- */ |
1149 |
|
|
1150 |
|
#ifdef __WINDOWS__ |
1151 |
|
|
1152 |
|
/* dynamic linking for Win32 */ |
1153 |
|
|
1154 |
|
#include <windows.h> |
1155 |
|
|
1156 |
|
/* Forward declaration; required to implement handle search below. */ |
1157 |
|
static lt_dlhandle handles; |
1158 |
|
|
1159 |
|
static lt_module |
1160 |
|
sys_wll_open (loader_data, filename) |
1161 |
|
lt_user_data loader_data; |
1162 |
|
const char *filename; |
1163 |
|
{ |
1164 |
|
lt_dlhandle cur; |
1165 |
|
lt_module module = 0; |
1166 |
|
const char *errormsg = 0; |
1167 |
|
char *searchname = 0; |
1168 |
|
char *ext; |
1169 |
|
char self_name_buf[MAX_PATH]; |
1170 |
|
|
1171 |
|
if (!filename) |
1172 |
|
{ |
1173 |
|
/* Get the name of main module */ |
1174 |
|
*self_name_buf = 0; |
1175 |
|
GetModuleFileName (NULL, self_name_buf, sizeof (self_name_buf)); |
1176 |
|
filename = ext = self_name_buf; |
1177 |
|
} |
1178 |
|
else |
1179 |
|
{ |
1180 |
|
ext = strrchr (filename, '.'); |
1181 |
|
} |
1182 |
|
|
1183 |
|
if (ext) |
1184 |
|
{ |
1185 |
|
/* FILENAME already has an extension. */ |
1186 |
|
searchname = lt_estrdup (filename); |
1187 |
|
} |
1188 |
|
else |
1189 |
|
{ |
1190 |
|
/* Append a `.' to stop Windows from adding an |
1191 |
|
implicit `.dll' extension. */ |
1192 |
|
searchname = LT_EMALLOC (char, 2+ LT_STRLEN (filename)); |
1193 |
|
if (searchname) |
1194 |
|
sprintf (searchname, "%s.", filename); |
1195 |
|
} |
1196 |
|
if (!searchname) |
1197 |
|
return 0; |
1198 |
|
|
1199 |
|
#if __CYGWIN__ |
1200 |
|
{ |
1201 |
|
char wpath[MAX_PATH]; |
1202 |
|
cygwin_conv_to_full_win32_path(searchname, wpath); |
1203 |
|
module = LoadLibrary(wpath); |
1204 |
|
} |
1205 |
|
#else |
1206 |
|
module = LoadLibrary (searchname); |
1207 |
|
#endif |
1208 |
|
LT_DLFREE (searchname); |
1209 |
|
|
1210 |
|
/* libltdl expects this function to fail if it is unable |
1211 |
|
to physically load the library. Sadly, LoadLibrary |
1212 |
|
will search the loaded libraries for a match and return |
1213 |
|
one of them if the path search load fails. |
1214 |
|
|
1215 |
|
We check whether LoadLibrary is returning a handle to |
1216 |
|
an already loaded module, and simulate failure if we |
1217 |
|
find one. */ |
1218 |
|
LT_DLMUTEX_LOCK (); |
1219 |
|
cur = handles; |
1220 |
|
while (cur) |
1221 |
|
{ |
1222 |
|
if (!cur->module) |
1223 |
|
{ |
1224 |
|
cur = 0; |
1225 |
|
break; |
1226 |
|
} |
1227 |
|
|
1228 |
|
if (cur->module == module) |
1229 |
|
{ |
1230 |
|
break; |
1231 |
|
} |
1232 |
|
|
1233 |
|
cur = cur->next; |
1234 |
|
} |
1235 |
|
LT_DLMUTEX_UNLOCK (); |
1236 |
|
|
1237 |
|
if (cur || !module) |
1238 |
|
{ |
1239 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); |
1240 |
|
module = 0; |
1241 |
|
} |
1242 |
|
|
1243 |
|
return module; |
1244 |
} |
} |
1245 |
|
|
1246 |
static int |
static int |
1247 |
sys_shl_close (handle) |
sys_wll_close (loader_data, module) |
1248 |
lt_dlhandle handle; |
lt_user_data loader_data; |
1249 |
|
lt_module module; |
1250 |
{ |
{ |
1251 |
if (shl_unload((shl_t) (handle->handle)) != 0) { |
int errors = 0; |
1252 |
last_error = cannot_close_error; |
|
1253 |
return 1; |
if (FreeLibrary(module) == 0) |
1254 |
} |
{ |
1255 |
return 0; |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); |
1256 |
|
++errors; |
1257 |
|
} |
1258 |
|
|
1259 |
|
return errors; |
1260 |
} |
} |
1261 |
|
|
1262 |
static lt_ptr_t |
static lt_ptr |
1263 |
sys_shl_sym (handle, symbol) |
sys_wll_sym (loader_data, module, symbol) |
1264 |
lt_dlhandle handle; |
lt_user_data loader_data; |
1265 |
const char *symbol; |
lt_module module; |
1266 |
{ |
const char *symbol; |
1267 |
lt_ptr_t address; |
{ |
1268 |
|
lt_ptr address = GetProcAddress (module, symbol); |
1269 |
if (handle->handle && shl_findsym((shl_t*) &(handle->handle), |
|
1270 |
symbol, TYPE_UNDEFINED, &address) == 0) |
if (!address) |
1271 |
if (address) |
{ |
1272 |
return address; |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); |
1273 |
last_error = symbol_error; |
} |
1274 |
return 0; |
|
1275 |
|
return address; |
1276 |
} |
} |
1277 |
|
|
1278 |
static |
static struct lt_user_dlloader sys_wll = { |
1279 |
lt_dltype_t |
0, sys_wll_open, sys_wll_close, sys_wll_sym, 0, 0 |
1280 |
sys_shl = { LTDL_TYPE_TOP, 0, sys_shl_init, sys_shl_exit, |
}; |
|
sys_shl_open, sys_shl_close, sys_shl_sym }; |
|
1281 |
|
|
1282 |
#undef LTDL_TYPE_TOP |
#endif /* __WINDOWS__ */ |
1283 |
#define LTDL_TYPE_TOP &sys_shl |
|
1284 |
|
|
1285 |
|
|
1286 |
|
|
1287 |
|
/* --- LOAD_ADD_ON() INTERFACE LOADER --- */ |
1288 |
|
|
1289 |
|
|
1290 |
|
#ifdef __BEOS__ |
1291 |
|
|
1292 |
|
/* dynamic linking for BeOS */ |
1293 |
|
|
1294 |
|
#include <kernel/image.h> |
1295 |
|
|
1296 |
|
static lt_module |
1297 |
|
sys_bedl_open (loader_data, filename) |
1298 |
|
lt_user_data loader_data; |
1299 |
|
const char *filename; |
1300 |
|
{ |
1301 |
|
image_id image = 0; |
1302 |
|
|
1303 |
|
if (filename) |
1304 |
|
{ |
1305 |
|
image = load_add_on (filename); |
1306 |
|
} |
1307 |
|
else |
1308 |
|
{ |
1309 |
|
image_info info; |
1310 |
|
int32 cookie = 0; |
1311 |
|
if (get_next_image_info (0, &cookie, &info) == B_OK) |
1312 |
|
image = load_add_on (info.name); |
1313 |
|
} |
1314 |
|
|
1315 |
|
if (image <= 0) |
1316 |
|
{ |
1317 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); |
1318 |
|
image = 0; |
1319 |
|
} |
1320 |
|
|
1321 |
|
return (lt_module) image; |
1322 |
|
} |
1323 |
|
|
1324 |
|
static int |
1325 |
|
sys_bedl_close (loader_data, module) |
1326 |
|
lt_user_data loader_data; |
1327 |
|
lt_module module; |
1328 |
|
{ |
1329 |
|
int errors = 0; |
1330 |
|
|
1331 |
|
if (unload_add_on ((image_id) module) != B_OK) |
1332 |
|
{ |
1333 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); |
1334 |
|
++errors; |
1335 |
|
} |
1336 |
|
|
1337 |
|
return errors; |
1338 |
|
} |
1339 |
|
|
1340 |
|
static lt_ptr |
1341 |
|
sys_bedl_sym (loader_data, module, symbol) |
1342 |
|
lt_user_data loader_data; |
1343 |
|
lt_module module; |
1344 |
|
const char *symbol; |
1345 |
|
{ |
1346 |
|
lt_ptr address = 0; |
1347 |
|
image_id image = (image_id) module; |
1348 |
|
|
1349 |
|
if (get_image_symbol (image, symbol, B_SYMBOL_TYPE_ANY, address) != B_OK) |
1350 |
|
{ |
1351 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); |
1352 |
|
address = 0; |
1353 |
|
} |
1354 |
|
|
1355 |
|
return address; |
1356 |
|
} |
1357 |
|
|
1358 |
|
static struct lt_user_dlloader sys_bedl = { |
1359 |
|
0, sys_bedl_open, sys_bedl_close, sys_bedl_sym, 0, 0 |
1360 |
|
}; |
1361 |
|
|
1362 |
|
#endif /* __BEOS__ */ |
1363 |
|
|
1364 |
|
|
1365 |
|
|
1366 |
|
|
1367 |
|
/* --- DLD_LINK() INTERFACE LOADER --- */ |
1368 |
|
|
|
#endif |
|
1369 |
|
|
1370 |
#if HAVE_DLD |
#if HAVE_DLD |
1371 |
|
|
1375 |
#include <dld.h> |
#include <dld.h> |
1376 |
#endif |
#endif |
1377 |
|
|
1378 |
static int |
static lt_module |
1379 |
sys_dld_init LTDL_PARAMS((void)) |
sys_dld_open (loader_data, filename) |
1380 |
|
lt_user_data loader_data; |
1381 |
|
const char *filename; |
1382 |
{ |
{ |
1383 |
return 0; |
lt_module module = strdup (filename); |
|
} |
|
1384 |
|
|
1385 |
static int |
if (dld_link (filename) != 0) |
1386 |
sys_dld_exit LTDL_PARAMS((void)) |
{ |
1387 |
{ |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); |
1388 |
return 0; |
LT_DLFREE (module); |
1389 |
} |
module = 0; |
1390 |
|
} |
1391 |
|
|
1392 |
static int |
return module; |
|
sys_dld_open (handle, filename) |
|
|
lt_dlhandle handle; |
|
|
const char *filename; |
|
|
{ |
|
|
handle->handle = strdup(filename); |
|
|
if (!handle->handle) { |
|
|
last_error = memory_error; |
|
|
return 1; |
|
|
} |
|
|
if (dld_link(filename) != 0) { |
|
|
last_error = cannot_open_error; |
|
|
lt_dlfree(handle->handle); |
|
|
return 1; |
|
|
} |
|
|
return 0; |
|
1393 |
} |
} |
1394 |
|
|
1395 |
static int |
static int |
1396 |
sys_dld_close (handle) |
sys_dld_close (loader_data, module) |
1397 |
lt_dlhandle handle; |
lt_user_data loader_data; |
1398 |
|
lt_module module; |
1399 |
{ |
{ |
1400 |
if (dld_unlink_by_file((char*)(handle->handle), 1) != 0) { |
int errors = 0; |
1401 |
last_error = cannot_close_error; |
|
1402 |
return 1; |
if (dld_unlink_by_file ((char*)(module), 1) != 0) |
1403 |
} |
{ |
1404 |
lt_dlfree(handle->filename); |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); |
1405 |
return 0; |
++errors; |
1406 |
|
} |
1407 |
|
else |
1408 |
|
{ |
1409 |
|
LT_DLFREE (module); |
1410 |
|
} |
1411 |
|
|
1412 |
|
return errors; |
1413 |
} |
} |
1414 |
|
|
1415 |
static lt_ptr_t |
static lt_ptr |
1416 |
sys_dld_sym (handle, symbol) |
sys_dld_sym (loader_data, module, symbol) |
1417 |
lt_dlhandle handle; |
lt_user_data loader_data; |
1418 |
const char *symbol; |
lt_module module; |
1419 |
|
const char *symbol; |
1420 |
{ |
{ |
1421 |
lt_ptr_t address = dld_get_func(symbol); |
lt_ptr address = dld_get_func (symbol); |
1422 |
|
|
1423 |
if (!address) |
if (!address) |
1424 |
last_error = symbol_error; |
{ |
1425 |
return address; |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); |
1426 |
|
} |
1427 |
|
|
1428 |
|
return address; |
1429 |
} |
} |
1430 |
|
|
1431 |
static |
static struct lt_user_dlloader sys_dld = { |
1432 |
lt_dltype_t |
0, sys_dld_open, sys_dld_close, sys_dld_sym, 0, 0 |
1433 |
sys_dld = { LTDL_TYPE_TOP, 0, sys_dld_init, sys_dld_exit, |
}; |
|
sys_dld_open, sys_dld_close, sys_dld_sym }; |
|
1434 |
|
|
1435 |
#undef LTDL_TYPE_TOP |
#endif /* HAVE_DLD */ |
|
#define LTDL_TYPE_TOP &sys_dld |
|
1436 |
|
|
|
#endif |
|
1437 |
|
|
|
#ifdef _WIN32 |
|
1438 |
|
|
1439 |
/* dynamic linking for Win32 */ |
|
1440 |
|
/* --- DLPREOPEN() INTERFACE LOADER --- */ |
1441 |
|
|
1442 |
#include <windows.h> |
|
1443 |
|
/* emulate dynamic linking using preloaded_symbols */ |
1444 |
|
|
1445 |
|
typedef struct scm_lt_dlsymlists_t |
1446 |
|
{ |
1447 |
|
struct scm_lt_dlsymlists_t *next; |
1448 |
|
const scm_lt_dlsymlist *syms; |
1449 |
|
} scm_lt_dlsymlists_t; |
1450 |
|
|
1451 |
|
static const scm_lt_dlsymlist *default_preloaded_symbols = 0; |
1452 |
|
static scm_lt_dlsymlists_t *preloaded_symbols = 0; |
1453 |
|
|
1454 |
static int |
static int |
1455 |
sys_wll_init LTDL_PARAMS((void)) |
presym_init (loader_data) |
1456 |
|
lt_user_data loader_data; |
1457 |
{ |
{ |
1458 |
return 0; |
int errors = 0; |
1459 |
|
|
1460 |
|
LT_DLMUTEX_LOCK (); |
1461 |
|
|
1462 |
|
preloaded_symbols = 0; |
1463 |
|
if (default_preloaded_symbols) |
1464 |
|
{ |
1465 |
|
errors = scm_lt_dlpreload (default_preloaded_symbols); |
1466 |
|
} |
1467 |
|
|
1468 |
|
LT_DLMUTEX_UNLOCK (); |
1469 |
|
|
1470 |
|
return errors; |
1471 |
} |
} |
1472 |
|
|
1473 |
static int |
static int |
1474 |
sys_wll_exit LTDL_PARAMS((void)) |
presym_free_symlists () |
1475 |
{ |
{ |
1476 |
return 0; |
scm_lt_dlsymlists_t *lists; |
|
} |
|
1477 |
|
|
1478 |
/* Forward declaration; required to implement handle search below. */ |
LT_DLMUTEX_LOCK (); |
|
static lt_dlhandle handles; |
|
1479 |
|
|
1480 |
static int |
lists = preloaded_symbols; |
1481 |
sys_wll_open (handle, filename) |
while (lists) |
1482 |
lt_dlhandle handle; |
{ |
1483 |
const char *filename; |
scm_lt_dlsymlists_t *tmp = lists; |
|
{ |
|
|
lt_dlhandle cur; |
|
|
char *searchname = NULL; |
|
|
char *ext = strrchr(filename, '.'); |
|
|
|
|
|
if (ext) { |
|
|
/* FILENAME already has an extension. */ |
|
|
searchname = strdup(filename); |
|
|
} else { |
|
|
/* Append a `.' to stop Windows from adding an |
|
|
implicit `.dll' extension. */ |
|
|
searchname = (char*)lt_dlmalloc(2+ strlen(filename)); |
|
|
strcpy(searchname, filename); |
|
|
strcat(searchname, "."); |
|
|
} |
|
|
|
|
|
handle->handle = LoadLibrary(searchname); |
|
|
lt_dlfree(searchname); |
|
|
|
|
|
/* libltdl expects this function to fail if it is unable |
|
|
to physically load the library. Sadly, LoadLibrary |
|
|
will search the loaded libraries for a match and return |
|
|
one of them if the path search load fails. |
|
|
|
|
|
We check whether LoadLibrary is returning a handle to |
|
|
an already loaded module, and simulate failure if we |
|
|
find one. */ |
|
|
cur = handles; |
|
|
while (cur) { |
|
|
if (!cur->handle) { |
|
|
cur = 0; |
|
|
break; |
|
|
} |
|
|
if (cur->handle == handle->handle) |
|
|
break; |
|
|
cur = cur->next; |
|
|
} |
|
1484 |
|
|
1485 |
if (cur || !handle->handle) { |
lists = lists->next; |
1486 |
last_error = cannot_open_error; |
LT_DLFREE (tmp); |
1487 |
return 1; |
} |
1488 |
} |
preloaded_symbols = 0; |
1489 |
|
|
1490 |
return 0; |
LT_DLMUTEX_UNLOCK (); |
1491 |
|
|
1492 |
|
return 0; |
1493 |
} |
} |
1494 |
|
|
1495 |
static int |
static int |
1496 |
sys_wll_close (handle) |
presym_exit (loader_data) |
1497 |
lt_dlhandle handle; |
lt_user_data loader_data; |
1498 |
{ |
{ |
1499 |
if (FreeLibrary(handle->handle) == 0) { |
presym_free_symlists (); |
1500 |
last_error = cannot_close_error; |
return 0; |
|
return 1; |
|
|
} |
|
|
return 0; |
|
1501 |
} |
} |
1502 |
|
|
1503 |
static lt_ptr_t |
static int |
1504 |
sys_wll_sym (handle, symbol) |
presym_add_symlist (preloaded) |
1505 |
lt_dlhandle handle; |
const scm_lt_dlsymlist *preloaded; |
1506 |
const char *symbol; |
{ |
1507 |
{ |
scm_lt_dlsymlists_t *tmp; |
1508 |
lt_ptr_t address = GetProcAddress(handle->handle, symbol); |
scm_lt_dlsymlists_t *lists; |
1509 |
|
int errors = 0; |
1510 |
if (!address) |
|
1511 |
last_error = symbol_error; |
LT_DLMUTEX_LOCK (); |
1512 |
return address; |
|
1513 |
} |
lists = preloaded_symbols; |
1514 |
|
while (lists) |
1515 |
static |
{ |
1516 |
lt_dltype_t |
if (lists->syms == preloaded) |
1517 |
sys_wll = { LTDL_TYPE_TOP, 0, sys_wll_init, sys_wll_exit, |
{ |
1518 |
sys_wll_open, sys_wll_close, sys_wll_sym }; |
goto done; |
1519 |
|
} |
1520 |
|
lists = lists->next; |
1521 |
|
} |
1522 |
|
|
1523 |
|
tmp = LT_EMALLOC (scm_lt_dlsymlists_t, 1); |
1524 |
|
if (tmp) |
1525 |
|
{ |
1526 |
|
memset (tmp, 0, sizeof(scm_lt_dlsymlists_t)); |
1527 |
|
tmp->syms = preloaded; |
1528 |
|
tmp->next = preloaded_symbols; |
1529 |
|
preloaded_symbols = tmp; |
1530 |
|
} |
1531 |
|
else |
1532 |
|
{ |
1533 |
|
++errors; |
1534 |
|
} |
1535 |
|
|
1536 |
|
done: |
1537 |
|
LT_DLMUTEX_UNLOCK (); |
1538 |
|
return errors; |
1539 |
|
} |
1540 |
|
|
1541 |
|
static lt_module |
1542 |
|
presym_open (loader_data, filename) |
1543 |
|
lt_user_data loader_data; |
1544 |
|
const char *filename; |
1545 |
|
{ |
1546 |
|
scm_lt_dlsymlists_t *lists; |
1547 |
|
lt_module module = (lt_module) 0; |
1548 |
|
|
1549 |
|
LT_DLMUTEX_LOCK (); |
1550 |
|
lists = preloaded_symbols; |
1551 |
|
|
1552 |
|
if (!lists) |
1553 |
|
{ |
1554 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_SYMBOLS)); |
1555 |
|
goto done; |
1556 |
|
} |
1557 |
|
|
1558 |
|
/* Can't use NULL as the reflective symbol header, as NULL is |
1559 |
|
used to mark the end of the entire symbol list. Self-dlpreopened |
1560 |
|
symbols follow this magic number, chosen to be an unlikely |
1561 |
|
clash with a real module name. */ |
1562 |
|
if (!filename) |
1563 |
|
{ |
1564 |
|
filename = "@PROGRAM@"; |
1565 |
|
} |
1566 |
|
|
1567 |
|
while (lists) |
1568 |
|
{ |
1569 |
|
const scm_lt_dlsymlist *syms = lists->syms; |
1570 |
|
|
1571 |
|
while (syms->name) |
1572 |
|
{ |
1573 |
|
if (!syms->address && strcmp(syms->name, filename) == 0) |
1574 |
|
{ |
1575 |
|
module = (lt_module) syms; |
1576 |
|
goto done; |
1577 |
|
} |
1578 |
|
++syms; |
1579 |
|
} |
1580 |
|
|
1581 |
|
lists = lists->next; |
1582 |
|
} |
1583 |
|
|
1584 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); |
1585 |
|
|
1586 |
|
done: |
1587 |
|
LT_DLMUTEX_UNLOCK (); |
1588 |
|
return module; |
1589 |
|
} |
1590 |
|
|
1591 |
|
static int |
1592 |
|
presym_close (loader_data, module) |
1593 |
|
lt_user_data loader_data; |
1594 |
|
lt_module module; |
1595 |
|
{ |
1596 |
|
/* Just to silence gcc -Wall */ |
1597 |
|
module = 0; |
1598 |
|
return 0; |
1599 |
|
} |
1600 |
|
|
1601 |
|
static lt_ptr |
1602 |
|
presym_sym (loader_data, module, symbol) |
1603 |
|
lt_user_data loader_data; |
1604 |
|
lt_module module; |
1605 |
|
const char *symbol; |
1606 |
|
{ |
1607 |
|
scm_lt_dlsymlist *syms = (scm_lt_dlsymlist*) module; |
1608 |
|
|
1609 |
|
++syms; |
1610 |
|
while (syms->address) |
1611 |
|
{ |
1612 |
|
if (strcmp(syms->name, symbol) == 0) |
1613 |
|
{ |
1614 |
|
return syms->address; |
1615 |
|
} |
1616 |
|
|
1617 |
|
++syms; |
1618 |
|
} |
1619 |
|
|
1620 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); |
1621 |
|
|
1622 |
|
return 0; |
1623 |
|
} |
1624 |
|
|
1625 |
|
static struct lt_user_dlloader presym = { |
1626 |
|
0, presym_open, presym_close, presym_sym, presym_exit, 0 |
1627 |
|
}; |
1628 |
|
|
1629 |
|
|
1630 |
|
|
1631 |
|
|
1632 |
|
|
1633 |
|
/* --- DYNAMIC MODULE LOADING --- */ |
1634 |
|
|
1635 |
|
|
1636 |
|
/* The type of a function used at each iteration of foreach_dirinpath(). */ |
1637 |
|
typedef int foreach_callback_func LT_PARAMS((char *filename, lt_ptr data1, |
1638 |
|
lt_ptr data2)); |
1639 |
|
|
1640 |
|
static int foreach_dirinpath LT_PARAMS((const char *search_path, |
1641 |
|
const char *base_name, |
1642 |
|
foreach_callback_func *func, |
1643 |
|
lt_ptr data1, lt_ptr data2)); |
1644 |
|
|
1645 |
|
static int find_file_callback LT_PARAMS((char *filename, lt_ptr data, |
1646 |
|
lt_ptr ignored)); |
1647 |
|
static int find_handle_callback LT_PARAMS((char *filename, lt_ptr data, |
1648 |
|
lt_ptr ignored)); |
1649 |
|
static int foreachfile_callback LT_PARAMS((char *filename, lt_ptr data1, |
1650 |
|
lt_ptr data2)); |
1651 |
|
|
1652 |
|
|
1653 |
|
static int canonicalize_path LT_PARAMS((const char *path, |
1654 |
|
char **pcanonical)); |
1655 |
|
static int argzize_path LT_PARAMS((const char *path, |
1656 |
|
char **pargz, |
1657 |
|
size_t *pargz_len)); |
1658 |
|
static FILE *find_file LT_PARAMS((const char *search_path, |
1659 |
|
const char *base_name, |
1660 |
|
char **pdir)); |
1661 |
|
static lt_dlhandle *find_handle LT_PARAMS((const char *search_path, |
1662 |
|
const char *base_name, |
1663 |
|
lt_dlhandle *handle)); |
1664 |
|
static int find_module LT_PARAMS((lt_dlhandle *handle, |
1665 |
|
const char *dir, |
1666 |
|
const char *libdir, |
1667 |
|
const char *dlname, |
1668 |
|
const char *old_name, |
1669 |
|
int installed)); |
1670 |
|
static int free_vars LT_PARAMS((char *dlname, char *oldname, |
1671 |
|
char *libdir, char *deplibs)); |
1672 |
|
static int load_deplibs LT_PARAMS((lt_dlhandle handle, |
1673 |
|
char *deplibs)); |
1674 |
|
static int trim LT_PARAMS((char **dest, |
1675 |
|
const char *str)); |
1676 |
|
static int try_dlopen LT_PARAMS((lt_dlhandle *handle, |
1677 |
|
const char *filename)); |
1678 |
|
static int tryall_dlopen LT_PARAMS((lt_dlhandle *handle, |
1679 |
|
const char *filename)); |
1680 |
|
static int unload_deplibs LT_PARAMS((lt_dlhandle handle)); |
1681 |
|
static int lt_argz_insert LT_PARAMS((char **pargz, |
1682 |
|
size_t *pargz_len, |
1683 |
|
char *before, |
1684 |
|
const char *entry)); |
1685 |
|
static int lt_argz_insertinorder LT_PARAMS((char **pargz, |
1686 |
|
size_t *pargz_len, |
1687 |
|
const char *entry)); |
1688 |
|
static int lt_dlpath_insertdir LT_PARAMS((char **ppath, |
1689 |
|
char *before, |
1690 |
|
const char *dir)); |
1691 |
|
|
1692 |
|
static char *user_search_path= 0; |
1693 |
|
static lt_dlloader *loaders = 0; |
1694 |
|
static lt_dlhandle handles = 0; |
1695 |
|
static int initialized = 0; |
1696 |
|
|
1697 |
|
/* Initialize libltdl. */ |
1698 |
|
int |
1699 |
|
scm_lt_dlinit () |
1700 |
|
{ |
1701 |
|
int errors = 0; |
1702 |
|
|
1703 |
#undef LTDL_TYPE_TOP |
LT_DLMUTEX_LOCK (); |
|
#define LTDL_TYPE_TOP &sys_wll |
|
1704 |
|
|
1705 |
#endif |
/* Initialize only at first call. */ |
1706 |
|
if (++initialized == 1) |
1707 |
|
{ |
1708 |
|
handles = 0; |
1709 |
|
user_search_path = 0; /* empty search path */ |
1710 |
|
|
1711 |
|
#if HAVE_LIBDL && !defined(__CYGWIN__) |
1712 |
|
errors += scm_lt_dlloader_add (scm_lt_dlloader_next (0), &sys_dl, "dlopen"); |
1713 |
|
#endif |
1714 |
|
#if HAVE_SHL_LOAD |
1715 |
|
errors += scm_lt_dlloader_add (scm_lt_dlloader_next (0), &sys_shl, "dlopen"); |
1716 |
|
#endif |
1717 |
|
#ifdef __WINDOWS__ |
1718 |
|
errors += scm_lt_dlloader_add (scm_lt_dlloader_next (0), &sys_wll, "dlopen"); |
1719 |
|
#endif |
1720 |
#ifdef __BEOS__ |
#ifdef __BEOS__ |
1721 |
|
errors += scm_lt_dlloader_add (scm_lt_dlloader_next (0), &sys_bedl, "dlopen"); |
1722 |
|
#endif |
1723 |
|
#if HAVE_DLD |
1724 |
|
errors += scm_lt_dlloader_add (scm_lt_dlloader_next (0), &sys_dld, "dld"); |
1725 |
|
#endif |
1726 |
|
errors += scm_lt_dlloader_add (scm_lt_dlloader_next (0), &presym, "dlpreload"); |
1727 |
|
|
1728 |
/* dynamic linking for BeOS */ |
if (presym_init (presym.dlloader_data)) |
1729 |
|
{ |
1730 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INIT_LOADER)); |
1731 |
|
++errors; |
1732 |
|
} |
1733 |
|
else if (errors != 0) |
1734 |
|
{ |
1735 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (DLOPEN_NOT_SUPPORTED)); |
1736 |
|
++errors; |
1737 |
|
} |
1738 |
|
} |
1739 |
|
|
1740 |
#include <kernel/image.h> |
LT_DLMUTEX_UNLOCK (); |
1741 |
|
|
1742 |
static int |
return errors; |
1743 |
sys_bedl_init LTDL_PARAMS((void)) |
} |
1744 |
|
|
1745 |
|
int |
1746 |
|
scm_lt_dlpreload (preloaded) |
1747 |
|
const scm_lt_dlsymlist *preloaded; |
1748 |
{ |
{ |
1749 |
return 0; |
int errors = 0; |
1750 |
|
|
1751 |
|
if (preloaded) |
1752 |
|
{ |
1753 |
|
errors = presym_add_symlist (preloaded); |
1754 |
|
} |
1755 |
|
else |
1756 |
|
{ |
1757 |
|
presym_free_symlists(); |
1758 |
|
|
1759 |
|
LT_DLMUTEX_LOCK (); |
1760 |
|
if (default_preloaded_symbols) |
1761 |
|
{ |
1762 |
|
errors = scm_lt_dlpreload (default_preloaded_symbols); |
1763 |
|
} |
1764 |
|
LT_DLMUTEX_UNLOCK (); |
1765 |
|
} |
1766 |
|
|
1767 |
|
return errors; |
1768 |
} |
} |
1769 |
|
|
1770 |
static int |
int |
1771 |
sys_bedl_exit LTDL_PARAMS((void)) |
scm_lt_dlpreload_default (preloaded) |
1772 |
|
const scm_lt_dlsymlist *preloaded; |
1773 |
{ |
{ |
1774 |
return 0; |
LT_DLMUTEX_LOCK (); |
1775 |
|
default_preloaded_symbols = preloaded; |
1776 |
|
LT_DLMUTEX_UNLOCK (); |
1777 |
|
return 0; |
1778 |
} |
} |
1779 |
|
|
1780 |
static int |
int |
1781 |
sys_bedl_open (handle, filename) |
scm_lt_dlexit () |
1782 |
lt_dlhandle handle; |
{ |
1783 |
const char *filename; |
/* shut down libltdl */ |
1784 |
{ |
lt_dlloader *loader; |
1785 |
image_id image = 0; |
int errors = 0; |
1786 |
|
|
1787 |
if (filename) { |
LT_DLMUTEX_LOCK (); |
1788 |
image = load_add_on(filename); |
loader = loaders; |
1789 |
} else { |
|
1790 |
image_info info; |
if (!initialized) |
1791 |
int32 cookie = 0; |
{ |
1792 |
if (get_next_image_info(0, &cookie, &info) == B_OK) |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SHUTDOWN)); |
1793 |
image = load_add_on(info.name); |
++errors; |
1794 |
} |
goto done; |
1795 |
if (image <= 0) { |
} |
1796 |
last_error = cannot_open_error; |
|
1797 |
return 1; |
/* shut down only at last call. */ |
1798 |
} |
if (--initialized == 0) |
1799 |
handle->handle = (void*) image; |
{ |
1800 |
return 0; |
int level; |
1801 |
|
|
1802 |
|
while (handles && LT_DLIS_RESIDENT (handles)) |
1803 |
|
{ |
1804 |
|
handles = handles->next; |
1805 |
|
} |
1806 |
|
|
1807 |
|
/* close all modules */ |
1808 |
|
for (level = 1; handles; ++level) |
1809 |
|
{ |
1810 |
|
lt_dlhandle cur = handles; |
1811 |
|
int saw_nonresident = 0; |
1812 |
|
|
1813 |
|
while (cur) |
1814 |
|
{ |
1815 |
|
lt_dlhandle tmp = cur; |
1816 |
|
cur = cur->next; |
1817 |
|
if (!LT_DLIS_RESIDENT (tmp)) |
1818 |
|
saw_nonresident = 1; |
1819 |
|
if (!LT_DLIS_RESIDENT (tmp) && tmp->info.ref_count <= level) |
1820 |
|
{ |
1821 |
|
if (scm_lt_dlclose (tmp)) |
1822 |
|
{ |
1823 |
|
++errors; |
1824 |
|
} |
1825 |
|
} |
1826 |
|
} |
1827 |
|
/* done if only resident modules are left */ |
1828 |
|
if (!saw_nonresident) |
1829 |
|
break; |
1830 |
|
} |
1831 |
|
|
1832 |
|
/* close all loaders */ |
1833 |
|
while (loader) |
1834 |
|
{ |
1835 |
|
lt_dlloader *next = loader->next; |
1836 |
|
lt_user_data data = loader->dlloader_data; |
1837 |
|
if (loader->dlloader_exit && loader->dlloader_exit (data)) |
1838 |
|
{ |
1839 |
|
++errors; |
1840 |
|
} |
1841 |
|
|
1842 |
|
LT_DLMEM_REASSIGN (loader, next); |
1843 |
|
} |
1844 |
|
loaders = 0; |
1845 |
|
} |
1846 |
|
|
1847 |
|
done: |
1848 |
|
LT_DLMUTEX_UNLOCK (); |
1849 |
|
return errors; |
1850 |
} |
} |
1851 |
|
|
1852 |
static int |
static int |
1853 |
sys_bedl_close (handle) |
tryall_dlopen (handle, filename) |
1854 |
lt_dlhandle handle; |
lt_dlhandle *handle; |
1855 |
|
const char *filename; |
1856 |
{ |
{ |
1857 |
if (unload_add_on((image_id)handle->handle) != B_OK) { |
lt_dlhandle cur; |
1858 |
last_error = cannot_close_error; |
lt_dlloader *loader; |
1859 |
return 1; |
const char *saved_error; |
1860 |
} |
int errors = 0; |
1861 |
return 0; |
|
1862 |
|
LT_DLMUTEX_GETERROR (saved_error); |
1863 |
|
LT_DLMUTEX_LOCK (); |
1864 |
|
|
1865 |
|
cur = handles; |
1866 |
|
loader = loaders; |
1867 |
|
|
1868 |
|
/* check whether the module was already opened */ |
1869 |
|
while (cur) |
1870 |
|
{ |
1871 |
|
/* try to dlopen the program itself? */ |
1872 |
|
if (!cur->info.filename && !filename) |
1873 |
|
{ |
1874 |
|
break; |
1875 |
|
} |
1876 |
|
|
1877 |
|
if (cur->info.filename && filename |
1878 |
|
&& strcmp (cur->info.filename, filename) == 0) |
1879 |
|
{ |
1880 |
|
break; |
1881 |
|
} |
1882 |
|
|
1883 |
|
cur = cur->next; |
1884 |
|
} |
1885 |
|
|
1886 |
|
if (cur) |
1887 |
|
{ |
1888 |
|
++cur->info.ref_count; |
1889 |
|
*handle = cur; |
1890 |
|
goto done; |
1891 |
|
} |
1892 |
|
|
1893 |
|
cur = *handle; |
1894 |
|
if (filename) |
1895 |
|
{ |
1896 |
|
cur->info.filename = lt_estrdup (filename); |
1897 |
|
if (!cur->info.filename) |
1898 |
|
{ |
1899 |
|
++errors; |
1900 |
|
goto done; |
1901 |
|
} |
1902 |
|
} |
1903 |
|
else |
1904 |
|
{ |
1905 |
|
cur->info.filename = 0; |
1906 |
|
} |
1907 |
|
|
1908 |
|
while (loader) |
1909 |
|
{ |
1910 |
|
lt_user_data data = loader->dlloader_data; |
1911 |
|
|
1912 |
|
cur->module = loader->module_open (data, filename); |
1913 |
|
|
1914 |
|
if (cur->module != 0) |
1915 |
|
{ |
1916 |
|
break; |
1917 |
|
} |
1918 |
|
loader = loader->next; |
1919 |
|
} |
1920 |
|
|
1921 |
|
if (!loader) |
1922 |
|
{ |
1923 |
|
LT_DLFREE (cur->info.filename); |
1924 |
|
++errors; |
1925 |
|
goto done; |
1926 |
|
} |
1927 |
|
|
1928 |
|
cur->loader = loader; |
1929 |
|
LT_DLMUTEX_SETERROR (saved_error); |
1930 |
|
|
1931 |
|
done: |
1932 |
|
LT_DLMUTEX_UNLOCK (); |
1933 |
|
|
1934 |
|
return errors; |
1935 |
|
} |
1936 |
|
|
1937 |
|
static int |
1938 |
|
tryall_dlopen_module (handle, prefix, dirname, dlname) |
1939 |
|
lt_dlhandle *handle; |
1940 |
|
const char *prefix; |
1941 |
|
const char *dirname; |
1942 |
|
const char *dlname; |
1943 |
|
{ |
1944 |
|
int error = 0; |
1945 |
|
char *filename = 0; |
1946 |
|
size_t filename_len = 0; |
1947 |
|
size_t dirname_len = LT_STRLEN (dirname); |
1948 |
|
|
1949 |
|
assert (handle); |
1950 |
|
assert (dirname); |
1951 |
|
assert (dlname); |
1952 |
|
#ifdef LT_DIRSEP_CHAR |
1953 |
|
/* Only canonicalized names (i.e. with DIRSEP chars already converted) |
1954 |
|
should make it into this function: */ |
1955 |
|
assert (strchr (dirname, LT_DIRSEP_CHAR) == 0); |
1956 |
|
#endif |
1957 |
|
|
1958 |
|
if (dirname[dirname_len -1] == '/') |
1959 |
|
--dirname_len; |
1960 |
|
filename_len = dirname_len + 1 + LT_STRLEN (dlname); |
1961 |
|
|
1962 |
|
/* Allocate memory, and combine DIRNAME and MODULENAME into it. |
1963 |
|
The PREFIX (if any) is handled below. */ |
1964 |
|
filename = LT_EMALLOC (char, dirname_len + 1 + filename_len + 1); |
1965 |
|
if (!filename) |
1966 |
|
return 1; |
1967 |
|
|
1968 |
|
sprintf (filename, "%.*s/%s", (int) dirname_len, dirname, dlname); |
1969 |
|
|
1970 |
|
/* Now that we have combined DIRNAME and MODULENAME, if there is |
1971 |
|
also a PREFIX to contend with, simply recurse with the arguments |
1972 |
|
shuffled. Otherwise, attempt to open FILENAME as a module. */ |
1973 |
|
if (prefix) |
1974 |
|
{ |
1975 |
|
error += tryall_dlopen_module (handle, |
1976 |
|
(const char *) 0, prefix, filename); |
1977 |
|
} |
1978 |
|
else if (tryall_dlopen (handle, filename) != 0) |
1979 |
|
{ |
1980 |
|
++error; |
1981 |
|
} |
1982 |
|
|
1983 |
|
LT_DLFREE (filename); |
1984 |
|
return error; |
1985 |
} |
} |
1986 |
|
|
1987 |
static lt_ptr_t |
static int |
1988 |
sys_bedl_sym (handle, symbol) |
find_module (handle, dir, libdir, dlname, old_name, installed) |
1989 |
lt_dlhandle handle; |
lt_dlhandle *handle; |
1990 |
const char *symbol; |
const char *dir; |
1991 |
{ |
const char *libdir; |
1992 |
lt_ptr_t address = 0; |
const char *dlname; |
1993 |
image_id image = (image_id)handle->handle; |
const char *old_name; |
1994 |
|
int installed; |
1995 |
if (get_image_symbol(image, symbol, B_SYMBOL_TYPE_ANY, |
{ |
1996 |
&address) != B_OK) { |
/* Try to open the old library first; if it was dlpreopened, |
1997 |
last_error = symbol_error; |
we want the preopened version of it, even if a dlopenable |
1998 |
return 0; |
module is available. */ |
1999 |
} |
if (old_name && tryall_dlopen (handle, old_name) == 0) |
2000 |
return address; |
{ |
2001 |
} |
return 0; |
2002 |
|
} |
2003 |
static |
|
2004 |
lt_dltype_t |
/* Try to open the dynamic library. */ |
2005 |
sys_bedl = { LTDL_TYPE_TOP, 0, sys_bedl_init, sys_bedl_exit, |
if (dlname) |
2006 |
sys_bedl_open, sys_bedl_close, sys_bedl_sym }; |
{ |
2007 |
|
/* try to open the installed module */ |
2008 |
|
if (installed && libdir) |
2009 |
|
{ |
2010 |
|
if (tryall_dlopen_module (handle, |
2011 |
|
(const char *) 0, libdir, dlname) == 0) |
2012 |
|
return 0; |
2013 |
|
} |
2014 |
|
|
2015 |
|
/* try to open the not-installed module */ |
2016 |
|
if (!installed) |
2017 |
|
{ |
2018 |
|
if (tryall_dlopen_module (handle, dir, objdir, dlname) == 0) |
2019 |
|
return 0; |
2020 |
|
} |
2021 |
|
|
2022 |
|
/* maybe it was moved to another directory */ |
2023 |
|
{ |
2024 |
|
if (tryall_dlopen_module (handle, |
2025 |
|
(const char *) 0, dir, dlname) == 0) |
2026 |
|
return 0; |
2027 |
|
} |
2028 |
|
} |
2029 |
|
|
2030 |
|
return 1; |
2031 |
|
} |
2032 |
|
|
2033 |
|
|
2034 |
|
static int |
2035 |
|
canonicalize_path (path, pcanonical) |
2036 |
|
const char *path; |
2037 |
|
char **pcanonical; |
2038 |
|
{ |
2039 |
|
char *canonical = 0; |
2040 |
|
|
2041 |
|
assert (path && *path); |
2042 |
|
assert (pcanonical); |
2043 |
|
|
2044 |
|
canonical = LT_EMALLOC (char, 1+ LT_STRLEN (path)); |
2045 |
|
if (!canonical) |
2046 |
|
return 1; |
2047 |
|
|
2048 |
|
{ |
2049 |
|
size_t dest = 0; |
2050 |
|
size_t src; |
2051 |
|
for (src = 0; path[src] != LT_EOS_CHAR; ++src) |
2052 |
|
{ |
2053 |
|
/* Path separators are not copied to the beginning or end of |
2054 |
|
the destination, or if another separator would follow |
2055 |
|
immediately. */ |
2056 |
|
if (path[src] == LT_PATHSEP_CHAR) |
2057 |
|
{ |
2058 |
|
if ((dest == 0) |
2059 |
|
|| (path[1+ src] == LT_PATHSEP_CHAR) |
2060 |
|
|| (path[1+ src] == LT_EOS_CHAR)) |
2061 |
|
continue; |
2062 |
|
} |
2063 |
|
|
2064 |
|
/* Anything other than a directory separator is copied verbatim. */ |
2065 |
|
if ((path[src] != '/') |
2066 |
|
#ifdef LT_DIRSEP_CHAR |
2067 |
|
&& (path[src] != LT_DIRSEP_CHAR) |
2068 |
|
#endif |
2069 |
|
) |
2070 |
|
{ |
2071 |
|
canonical[dest++] = path[src]; |
2072 |
|
} |
2073 |
|
/* Directory separators are converted and copied only if they are |
2074 |
|
not at the end of a path -- i.e. before a path separator or |
2075 |
|
NULL terminator. */ |
2076 |
|
else if ((path[1+ src] != LT_PATHSEP_CHAR) |
2077 |
|
&& (path[1+ src] != LT_EOS_CHAR) |
2078 |
|
#ifdef LT_DIRSEP_CHAR |
2079 |
|
&& (path[1+ src] != LT_DIRSEP_CHAR) |
2080 |
|
#endif |
2081 |
|
&& (path[1+ src] != '/')) |
2082 |
|
{ |
2083 |
|
canonical[dest++] = '/'; |
2084 |
|
} |
2085 |
|
} |
2086 |
|
|
2087 |
|
/* Add an end-of-string marker at the end. */ |
2088 |
|
canonical[dest] = LT_EOS_CHAR; |
2089 |
|
} |
2090 |
|
|
2091 |
|
/* Assign new value. */ |
2092 |
|
*pcanonical = canonical; |
2093 |
|
|
2094 |
|
return 0; |
2095 |
|
} |
2096 |
|
|
2097 |
|
static int |
2098 |
|
argzize_path (path, pargz, pargz_len) |
2099 |
|
const char *path; |
2100 |
|
char **pargz; |
2101 |
|
size_t *pargz_len; |
2102 |
|
{ |
2103 |
|
error_t error; |
2104 |
|
|
2105 |
|
assert (path); |
2106 |
|
assert (pargz); |
2107 |
|
assert (pargz_len); |
2108 |
|
|
2109 |
|
if ((error = argz_create_sep (path, LT_PATHSEP_CHAR, pargz, pargz_len))) |
2110 |
|
{ |
2111 |
|
switch (error) |
2112 |
|
{ |
2113 |
|
case ENOMEM: |
2114 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); |
2115 |
|
break; |
2116 |
|
default: |
2117 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (UNKNOWN)); |
2118 |
|
break; |
2119 |
|
} |
2120 |
|
|
2121 |
|
return 1; |
2122 |
|
} |
2123 |
|
|
2124 |
|
return 0; |
2125 |
|
} |
2126 |
|
|
2127 |
|
/* Repeatedly call FUNC with each LT_PATHSEP_CHAR delimited element |
2128 |
|
of SEARCH_PATH and references to DATA1 and DATA2, until FUNC returns |
2129 |
|
non-zero or all elements are exhausted. If BASE_NAME is non-NULL, |
2130 |
|
it is appended to each SEARCH_PATH element before FUNC is called. */ |
2131 |
|
static int |
2132 |
|
foreach_dirinpath (search_path, base_name, func, data1, data2) |
2133 |
|
const char *search_path; |
2134 |
|
const char *base_name; |
2135 |
|
foreach_callback_func *func; |
2136 |
|
lt_ptr data1; |
2137 |
|
lt_ptr data2; |
2138 |
|
{ |
2139 |
|
int result = 0; |
2140 |
|
int filenamesize = 0; |
2141 |
|
int lenbase = LT_STRLEN (base_name); |
2142 |
|
size_t argz_len = 0; |
2143 |
|
char * argz = 0; |
2144 |
|
char * filename = 0; |
2145 |
|
char * canonical = 0; |
2146 |
|
|
2147 |
|
LT_DLMUTEX_LOCK (); |
2148 |
|
|
2149 |
|
if (!search_path || !*search_path) |
2150 |
|
{ |
2151 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); |
2152 |
|
goto cleanup; |
2153 |
|
} |
2154 |
|
|
2155 |
|
if (canonicalize_path (search_path, &canonical) != 0) |
2156 |
|
goto cleanup; |
2157 |
|
|
2158 |
|
if (argzize_path (canonical, &argz, &argz_len) != 0) |
2159 |
|
goto cleanup; |
2160 |
|
|
2161 |
|
{ |
2162 |
|
char *dir_name = 0; |
2163 |
|
while ((dir_name = argz_next (argz, argz_len, dir_name))) |
2164 |
|
{ |
2165 |
|
int lendir = LT_STRLEN (dir_name); |
2166 |
|
|
2167 |
|
if (lendir +1 +lenbase >= filenamesize) |
2168 |
|
{ |
2169 |
|
LT_DLFREE (filename); |
2170 |
|
filenamesize = lendir +1 +lenbase +1; /* "/d" + '/' + "f" + '\0' */ |
2171 |
|
filename = LT_EMALLOC (char, filenamesize); |
2172 |
|
if (!filename) |
2173 |
|
goto cleanup; |
2174 |
|
} |
2175 |
|
|
2176 |
|
strncpy (filename, dir_name, lendir); |
2177 |
|
if (base_name && *base_name) |
2178 |
|
{ |
2179 |
|
if (filename[lendir -1] != '/') |
2180 |
|
filename[lendir++] = '/'; |
2181 |
|
strcpy (filename +lendir, base_name); |
2182 |
|
} |
2183 |
|
|
2184 |
|
if ((result = (*func) (filename, data1, data2))) |
2185 |
|
{ |
2186 |
|
break; |
2187 |
|
} |
2188 |
|
} |
2189 |
|
} |
2190 |
|
|
2191 |
|
cleanup: |
2192 |
|
LT_DLFREE (argz); |
2193 |
|
LT_DLFREE (canonical); |
2194 |
|
LT_DLFREE (filename); |
2195 |
|
|
2196 |
|
LT_DLMUTEX_UNLOCK (); |
2197 |
|
|
2198 |
|
return result; |
2199 |
|
} |
2200 |
|
|
2201 |
|
/* If FILEPATH can be opened, store the name of the directory component |
2202 |
|
in DATA1, and the opened FILE* structure address in DATA2. Otherwise |
2203 |
|
DATA1 is unchanged, but DATA2 is set to a pointer to NULL. */ |
2204 |
|
static int |
2205 |
|
find_file_callback (filename, data1, data2) |
2206 |
|
char *filename; |
2207 |
|
lt_ptr data1; |
2208 |
|
lt_ptr data2; |
2209 |
|
{ |
2210 |
|
char **pdir = (char **) data1; |
2211 |
|
FILE **pfile = (FILE **) data2; |
2212 |
|
int is_done = 0; |
2213 |
|
|
2214 |
|
assert (filename && *filename); |
2215 |
|
assert (pdir); |
2216 |
|
assert (pfile); |
2217 |
|
|
2218 |
|
if ((*pfile = fopen (filename, LT_READTEXT_MODE))) |
2219 |
|
{ |
2220 |
|
char *dirend = strrchr (filename, '/'); |
2221 |
|
|
2222 |
|
if (dirend > filename) |
2223 |
|
*dirend = LT_EOS_CHAR; |
2224 |
|
|
2225 |
|
LT_DLFREE (*pdir); |
2226 |
|
*pdir = lt_estrdup (filename); |
2227 |
|
is_done = (*pdir == 0) ? -1 : 1; |
2228 |
|
} |
2229 |
|
|
2230 |
|
return is_done; |
2231 |
|
} |
2232 |
|
|
2233 |
|
static FILE * |
2234 |
|
find_file (search_path, base_name, pdir) |
2235 |
|
const char *search_path; |
2236 |
|
const char *base_name; |
2237 |
|
char **pdir; |
2238 |
|
{ |
2239 |
|
FILE *file = 0; |
2240 |
|
|
2241 |
|
foreach_dirinpath (search_path, base_name, find_file_callback, pdir, &file); |
2242 |
|
|
2243 |
|
return file; |
2244 |
|
} |
2245 |
|
|
2246 |
|
static int |
2247 |
|
find_handle_callback (filename, data, ignored) |
2248 |
|
char *filename; |
2249 |
|
lt_ptr data; |
2250 |
|
lt_ptr ignored; |
2251 |
|
{ |
2252 |
|
lt_dlhandle *handle = (lt_dlhandle *) data; |
2253 |
|
int found = !access (filename, F_OK); |
2254 |
|
|
2255 |
|
/* Bail out if file cannot be read... */ |
2256 |
|
if (!found) |
2257 |
|
return 0; |
2258 |
|
|
2259 |
|
/* Try to dlopen the file, but do not continue searching in any |
2260 |
|
case. */ |
2261 |
|
if (tryall_dlopen (handle, filename) != 0) |
2262 |
|
*handle = 0; |
2263 |
|
|
2264 |
|
return 1; |
2265 |
|
} |
2266 |
|
|
2267 |
|
/* If HANDLE was found return it, otherwise return 0. If HANDLE was |
2268 |
|
found but could not be opened, *HANDLE will be set to 0. */ |
2269 |
|
static lt_dlhandle * |
2270 |
|
find_handle (search_path, base_name, handle) |
2271 |
|
const char *search_path; |
2272 |
|
const char *base_name; |
2273 |
|
lt_dlhandle *handle; |
2274 |
|
{ |
2275 |
|
if (!search_path) |
2276 |
|
return 0; |
2277 |
|
|
2278 |
|
if (!foreach_dirinpath (search_path, base_name, find_handle_callback, |
2279 |
|
handle, 0)) |
2280 |
|
return 0; |
2281 |
|
|
2282 |
|
return handle; |
2283 |
|
} |
2284 |
|
|
2285 |
|
static int |
2286 |
|
load_deplibs (handle, deplibs) |
2287 |
|
lt_dlhandle handle; |
2288 |
|
char *deplibs; |
2289 |
|
{ |
2290 |
|
#if LTDL_DLOPEN_DEPLIBS |
2291 |
|
char *p, *save_search_path = 0; |
2292 |
|
int depcount = 0; |
2293 |
|
int i; |
2294 |
|
char **names = 0; |
2295 |
|
#endif |
2296 |
|
int errors = 0; |
2297 |
|
|
2298 |
|
handle->depcount = 0; |
2299 |
|
|
2300 |
|
#if LTDL_DLOPEN_DEPLIBS |
2301 |
|
if (!deplibs) |
2302 |
|
{ |
2303 |
|
return errors; |
2304 |
|
} |
2305 |
|
++errors; |
2306 |
|
|
2307 |
|
LT_DLMUTEX_LOCK (); |
2308 |
|
if (user_search_path) |
2309 |
|
{ |
2310 |
|
save_search_path = lt_estrdup (user_search_path); |
2311 |
|
if (!save_search_path) |
2312 |
|
goto cleanup; |
2313 |
|
} |
2314 |
|
|
2315 |
|
/* extract search paths and count deplibs */ |
2316 |
|
p = deplibs; |
2317 |
|
while (*p) |
2318 |
|
{ |
2319 |
|
if (!isspace ((int) *p)) |
2320 |
|
{ |
2321 |
|
char *end = p+1; |
2322 |
|
while (*end && !isspace((int) *end)) |
2323 |
|
{ |
2324 |
|
++end; |
2325 |
|
} |
2326 |
|
|
2327 |
|
if (strncmp(p, "-L", 2) == 0 || strncmp(p, "-R", 2) == 0) |
2328 |
|
{ |
2329 |
|
char save = *end; |
2330 |
|
*end = 0; /* set a temporary string terminator */ |
2331 |
|
if (scm_lt_dladdsearchdir(p+2)) |
2332 |
|
{ |
2333 |
|
goto cleanup; |
2334 |
|
} |
2335 |
|
*end = save; |
2336 |
|
} |
2337 |
|
else |
2338 |
|
{ |
2339 |
|
++depcount; |
2340 |
|
} |
2341 |
|
|
2342 |
|
p = end; |
2343 |
|
} |
2344 |
|
else |
2345 |
|
{ |
2346 |
|
++p; |
2347 |
|
} |
2348 |
|
} |
2349 |
|
|
2350 |
|
/* restore the old search path */ |
2351 |
|
LT_DLFREE (user_search_path); |
2352 |
|
user_search_path = save_search_path; |
2353 |
|
|
2354 |
|
LT_DLMUTEX_UNLOCK (); |
2355 |
|
|
2356 |
|
if (!depcount) |
2357 |
|
{ |
2358 |
|
errors = 0; |
2359 |
|
goto cleanup; |
2360 |
|
} |
2361 |
|
|
2362 |
|
names = LT_EMALLOC (char *, depcount * sizeof (char*)); |
2363 |
|
if (!names) |
2364 |
|
goto cleanup; |
2365 |
|
|
2366 |
|
/* now only extract the actual deplibs */ |
2367 |
|
depcount = 0; |
2368 |
|
p = deplibs; |
2369 |
|
while (*p) |
2370 |
|
{ |
2371 |
|
if (isspace ((int) *p)) |
2372 |
|
{ |
2373 |
|
++p; |
2374 |
|
} |
2375 |
|
else |
2376 |
|
{ |
2377 |
|
char *end = p+1; |
2378 |
|
while (*end && !isspace ((int) *end)) |
2379 |
|
{ |
2380 |
|
++end; |
2381 |
|
} |
2382 |
|
|
2383 |
|
if (strncmp(p, "-L", 2) != 0 && strncmp(p, "-R", 2) != 0) |
2384 |
|
{ |
2385 |
|
char *name; |
2386 |
|
char save = *end; |
2387 |
|
*end = 0; /* set a temporary string terminator */ |
2388 |
|
if (strncmp(p, "-l", 2) == 0) |
2389 |
|
{ |
2390 |
|
size_t name_len = 3+ /* "lib" */ LT_STRLEN (p + 2); |
2391 |
|
name = LT_EMALLOC (char, 1+ name_len); |
2392 |
|
if (name) |
2393 |
|
sprintf (name, "lib%s", p+2); |
2394 |
|
} |
2395 |
|
else |
2396 |
|
name = lt_estrdup(p); |
2397 |
|
|
2398 |
#undef LTDL_TYPE_TOP |
if (!name) |
2399 |
#define LTDL_TYPE_TOP &sys_bedl |
goto cleanup_names; |
2400 |
|
|
2401 |
#endif |
names[depcount++] = name; |
2402 |
|
*end = save; |
2403 |
|
} |
2404 |
|
p = end; |
2405 |
|
} |
2406 |
|
} |
2407 |
|
|
2408 |
/* emulate dynamic linking using preloaded_symbols */ |
/* load the deplibs (in reverse order) |
2409 |
|
At this stage, don't worry if the deplibs do not load correctly, |
2410 |
|
they may already be statically linked into the loading application |
2411 |
|
for instance. There will be a more enlightening error message |
2412 |
|
later on if the loaded module cannot resolve all of its symbols. */ |
2413 |
|
if (depcount) |
2414 |
|
{ |
2415 |
|
int j = 0; |
2416 |
|
|
2417 |
typedef struct lt_dlsymlists_t { |
handle->deplibs = (lt_dlhandle*) LT_EMALLOC (lt_dlhandle *, depcount); |
2418 |
struct lt_dlsymlists_t *next; |
if (!handle->deplibs) |
2419 |
const lt_dlsymlist *syms; |
goto cleanup; |
|
} lt_dlsymlists_t; |
|
2420 |
|
|
2421 |
static const lt_dlsymlist *default_preloaded_symbols = 0; |
for (i = 0; i < depcount; ++i) |
2422 |
static lt_dlsymlists_t *preloaded_symbols = 0; |
{ |
2423 |
|
handle->deplibs[j] = scm_lt_dlopenext(names[depcount-1-i]); |
2424 |
|
if (handle->deplibs[j]) |
2425 |
|
{ |
2426 |
|
++j; |
2427 |
|
} |
2428 |
|
} |
2429 |
|
|
2430 |
static int |
handle->depcount = j; /* Number of successfully loaded deplibs */ |
2431 |
presym_init LTDL_PARAMS((void)) |
errors = 0; |
2432 |
{ |
} |
2433 |
preloaded_symbols = 0; |
|
2434 |
if (default_preloaded_symbols) |
cleanup_names: |
2435 |
return lt_dlpreload(default_preloaded_symbols); |
for (i = 0; i < depcount; ++i) |
2436 |
return 0; |
{ |
2437 |
|
LT_DLFREE (names[i]); |
2438 |
|
} |
2439 |
|
|
2440 |
|
cleanup: |
2441 |
|
LT_DLFREE (names); |
2442 |
|
#endif |
2443 |
|
|
2444 |
|
return errors; |
2445 |
} |
} |
2446 |
|
|
2447 |
static int |
static int |
2448 |
presym_free_symlists LTDL_PARAMS((void)) |
unload_deplibs (handle) |
2449 |
|
lt_dlhandle handle; |
2450 |
{ |
{ |
2451 |
lt_dlsymlists_t *lists = preloaded_symbols; |
int i; |
2452 |
|
int errors = 0; |
2453 |
while (lists) { |
|
2454 |
lt_dlsymlists_t *tmp = lists; |
if (handle->depcount) |
2455 |
|
{ |
2456 |
lists = lists->next; |
for (i = 0; i < handle->depcount; ++i) |
2457 |
lt_dlfree(tmp); |
{ |
2458 |
|
if (!LT_DLIS_RESIDENT (handle->deplibs[i])) |
2459 |
|
{ |
2460 |
|
errors += scm_lt_dlclose (handle->deplibs[i]); |
2461 |
|
} |
2462 |
} |
} |
2463 |
preloaded_symbols = 0; |
} |
2464 |
return 0; |
|
2465 |
|
return errors; |
2466 |
} |
} |
2467 |
|
|
2468 |
static int |
static int |
2469 |
presym_exit LTDL_PARAMS((void)) |
trim (dest, str) |
2470 |
|
char **dest; |
2471 |
|
const char *str; |
2472 |
{ |
{ |
2473 |
presym_free_symlists(); |
/* remove the leading and trailing "'" from str |
2474 |
return 0; |
and store the result in dest */ |
2475 |
|
const char *end = strrchr (str, '\''); |
2476 |
|
int len = LT_STRLEN (str); |
2477 |
|
char *tmp; |
2478 |
|
|
2479 |
|
LT_DLFREE (*dest); |
2480 |
|
|
2481 |
|
if (len > 3 && str[0] == '\'') |
2482 |
|
{ |
2483 |
|
tmp = LT_EMALLOC (char, end - str); |
2484 |
|
if (!tmp) |
2485 |
|
return 1; |
2486 |
|
|
2487 |
|
strncpy(tmp, &str[1], (end - str) - 1); |
2488 |
|
tmp[len-3] = LT_EOS_CHAR; |
2489 |
|
*dest = tmp; |
2490 |
|
} |
2491 |
|
else |
2492 |
|
{ |
2493 |
|
*dest = 0; |
2494 |
|
} |
2495 |
|
|
2496 |
|
return 0; |
2497 |
} |
} |
2498 |
|
|
2499 |
static int |
static int |
2500 |
presym_add_symlist (preloaded) |
free_vars (dlname, oldname, libdir, deplibs) |
2501 |
const lt_dlsymlist *preloaded; |
char *dlname; |
2502 |
{ |
char *oldname; |
2503 |
lt_dlsymlists_t *tmp; |
char *libdir; |
2504 |
lt_dlsymlists_t *lists = preloaded_symbols; |
char *deplibs; |
2505 |
|
{ |
2506 |
while (lists) { |
LT_DLFREE (dlname); |
2507 |
if (lists->syms == preloaded) |
LT_DLFREE (oldname); |
2508 |
return 0; |
LT_DLFREE (libdir); |
2509 |
lists = lists->next; |
LT_DLFREE (deplibs); |
2510 |
} |
|
2511 |
|
return 0; |
|
tmp = (lt_dlsymlists_t*) lt_dlmalloc(sizeof(lt_dlsymlists_t)); |
|
|
if (!tmp) { |
|
|
last_error = memory_error; |
|
|
return 1; |
|
|
} |
|
|
tmp->syms = preloaded; |
|
|
tmp->next = 0; |
|
|
if (!preloaded_symbols) |
|
|
preloaded_symbols = tmp; |
|
|
else { |
|
|
/* append to the end */ |
|
|
lists = preloaded_symbols; |
|
|
while (lists->next) |
|
|
lists = lists->next; |
|
|
lists->next = tmp; |
|
|
} |
|
|
return 0; |
|
2512 |
} |
} |
2513 |
|
|
2514 |
static int |
int |
2515 |
presym_open (handle, filename) |
try_dlopen (phandle, filename) |
2516 |
lt_dlhandle handle; |
lt_dlhandle *phandle; |
2517 |
const char *filename; |
const char *filename; |
2518 |
{ |
{ |
2519 |
lt_dlsymlists_t *lists = preloaded_symbols; |
const char * ext = 0; |
2520 |
|
const char * saved_error = 0; |
2521 |
if (!lists) { |
char * canonical = 0; |
2522 |
last_error = no_symbols_error; |
char * base_name = 0; |
2523 |
return 1; |
char * dir = 0; |
2524 |
} |
char * name = 0; |
2525 |
if (!filename) |
int errors = 0; |
2526 |
filename = "@PROGRAM@"; |
lt_dlhandle newhandle; |
2527 |
while (lists) { |
|
2528 |
const lt_dlsymlist *syms = lists->syms; |
assert (phandle); |
2529 |
|
assert (*phandle == 0); |
2530 |
while (syms->name) { |
|
2531 |
if (!syms->address && |
LT_DLMUTEX_GETERROR (saved_error); |
2532 |
strcmp(syms->name, filename) == 0) { |
|
2533 |
handle->handle = (lt_ptr_t) syms; |
/* dlopen self? */ |
2534 |
return 0; |
if (!filename) |
2535 |
} |
{ |
2536 |
syms++; |
*phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1); |
2537 |
|
if (*phandle == 0) |
2538 |
|
return 1; |
2539 |
|
|
2540 |
|
memset (*phandle, 0, sizeof(struct lt_dlhandle_struct)); |
2541 |
|
newhandle = *phandle; |
2542 |
|
|
2543 |
|
/* scm_lt_dlclose()ing yourself is very bad! Disallow it. */ |
2544 |
|
LT_DLSET_FLAG (*phandle, LT_DLRESIDENT_FLAG); |
2545 |
|
|
2546 |
|
if (tryall_dlopen (&newhandle, 0) != 0) |
2547 |
|
{ |
2548 |
|
LT_DLFREE (*phandle); |
2549 |
|
return 1; |
2550 |
|
} |
2551 |
|
|
2552 |
|
goto register_handle; |
2553 |
|
} |
2554 |
|
|
2555 |
|
assert (filename && *filename); |
2556 |
|
|
2557 |
|
/* Doing this immediately allows internal functions to safely |
2558 |
|
assume only canonicalized paths are passed. */ |
2559 |
|
if (canonicalize_path (filename, &canonical) != 0) |
2560 |
|
{ |
2561 |
|
++errors; |
2562 |
|
goto cleanup; |
2563 |
|
} |
2564 |
|
|
2565 |
|
/* If the canonical module name is a path (relative or absolute) |
2566 |
|
then split it into a directory part and a name part. */ |
2567 |
|
base_name = strrchr (canonical, '/'); |
2568 |
|
if (base_name) |
2569 |
|
{ |
2570 |
|
size_t dirlen = (1+ base_name) - canonical; |
2571 |
|
|
2572 |
|
dir = LT_EMALLOC (char, 1+ dirlen); |
2573 |
|
if (!dir) |
2574 |
|
{ |
2575 |
|
++errors; |
2576 |
|
goto cleanup; |
2577 |
|
} |
2578 |
|
|
2579 |
|
strncpy (dir, canonical, dirlen); |
2580 |
|
dir[dirlen] = LT_EOS_CHAR; |
2581 |
|
|
2582 |
|
++base_name; |
2583 |
|
} |
2584 |
|
else |
2585 |
|
LT_DLMEM_REASSIGN (base_name, canonical); |
2586 |
|
|
2587 |
|
assert (base_name && *base_name); |
2588 |
|
|
2589 |
|
/* Check whether we are opening a libtool module (.la extension). */ |
2590 |
|
ext = strrchr (base_name, '.'); |
2591 |
|
if (ext && strcmp (ext, archive_ext) == 0) |
2592 |
|
{ |
2593 |
|
/* this seems to be a libtool module */ |
2594 |
|
FILE * file = 0; |
2595 |
|
char * dlname = 0; |
2596 |
|
char * old_name = 0; |
2597 |
|
char * libdir = 0; |
2598 |
|
char * deplibs = 0; |
2599 |
|
char * line = 0; |
2600 |
|
size_t line_len; |
2601 |
|
int i; |
2602 |
|
|
2603 |
|
/* if we can't find the installed flag, it is probably an |
2604 |
|
installed libtool archive, produced with an old version |
2605 |
|
of libtool */ |
2606 |
|
int installed = 1; |
2607 |
|
|
2608 |
|
/* extract the module name from the file name */ |
2609 |
|
name = LT_EMALLOC (char, ext - base_name + 1); |
2610 |
|
if (!name) |
2611 |
|
{ |
2612 |
|
++errors; |
2613 |
|
goto cleanup; |
2614 |
|
} |
2615 |
|
|
2616 |
|
/* canonicalize the module name */ |
2617 |
|
for (i = 0; i < ext - base_name; ++i) |
2618 |
|
{ |
2619 |
|
if (isalnum ((int)(base_name[i]))) |
2620 |
|
{ |
2621 |
|
name[i] = base_name[i]; |
2622 |
|
} |
2623 |
|
else |
2624 |
|
{ |
2625 |
|
name[i] = '_'; |
2626 |
|
} |
2627 |
|
} |
2628 |
|
name[ext - base_name] = LT_EOS_CHAR; |
2629 |
|
|
2630 |
|
/* Now try to open the .la file. If there is no directory name |
2631 |
|
component, try to find it first in user_search_path and then other |
2632 |
|
prescribed paths. Otherwise (or in any case if the module was not |
2633 |
|
yet found) try opening just the module name as passed. */ |
2634 |
|
if (!dir) |
2635 |
|
{ |
2636 |
|
const char *search_path; |
2637 |
|
|
2638 |
|
LT_DLMUTEX_LOCK (); |
2639 |
|
search_path = user_search_path; |
2640 |
|
if (search_path) |
2641 |
|
file = find_file (user_search_path, base_name, &dir); |
2642 |
|
LT_DLMUTEX_UNLOCK (); |
2643 |
|
|
2644 |
|
if (!file) |
2645 |
|
{ |
2646 |
|
search_path = getenv (LTDL_SEARCHPATH_VAR); |
2647 |
|
if (search_path) |
2648 |
|
file = find_file (search_path, base_name, &dir); |
2649 |
|
} |
2650 |
|
|
2651 |
|
#ifdef LTDL_SHLIBPATH_VAR |
2652 |
|
if (!file) |
2653 |
|
{ |
2654 |
|
search_path = getenv (LTDL_SHLIBPATH_VAR); |
2655 |
|
if (search_path) |
2656 |
|
file = find_file (search_path, base_name, &dir); |
2657 |
|
} |
2658 |
|
#endif |
2659 |
|
#ifdef LTDL_SYSSEARCHPATH |
2660 |
|
if (!file && sys_search_path) |
2661 |
|
{ |
2662 |
|
file = find_file (sys_search_path, base_name, &dir); |
2663 |
|
} |
2664 |
|
#endif |
2665 |
|
} |
2666 |
|
if (!file) |
2667 |
|
{ |
2668 |
|
file = fopen (filename, LT_READTEXT_MODE); |
2669 |
|
} |
2670 |
|
|
2671 |
|
/* If we didn't find the file by now, it really isn't there. Set |
2672 |
|
the status flag, and bail out. */ |
2673 |
|
if (!file) |
2674 |
|
{ |
2675 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); |
2676 |
|
++errors; |
2677 |
|
goto cleanup; |
2678 |
|
} |
2679 |
|
|
2680 |
|
line_len = LT_FILENAME_MAX; |
2681 |
|
line = LT_EMALLOC (char, line_len); |
2682 |
|
if (!line) |
2683 |
|
{ |
2684 |
|
fclose (file); |
2685 |
|
++errors; |
2686 |
|
goto cleanup; |
2687 |
|
} |
2688 |
|
|
2689 |
|
/* read the .la file */ |
2690 |
|
while (!feof (file)) |
2691 |
|
{ |
2692 |
|
if (!fgets (line, line_len, file)) |
2693 |
|
{ |
2694 |
|
break; |
2695 |
|
} |
2696 |
|
|
2697 |
|
/* Handle the case where we occasionally need to read a line |
2698 |
|
that is longer than the initial buffer size. */ |
2699 |
|
while (line[LT_STRLEN(line) -1] != '\n') |
2700 |
|
{ |
2701 |
|
line = LT_DLREALLOC (char, line, line_len *2); |
2702 |
|
if (!fgets (&line[line_len -1], line_len +1, file)) |
2703 |
|
{ |
2704 |
|
break; |
2705 |
} |
} |
2706 |
lists = lists->next; |
line_len *= 2; |
2707 |
|
} |
2708 |
|
|
2709 |
|
if (line[0] == '\n' || line[0] == '#') |
2710 |
|
{ |
2711 |
|
continue; |
2712 |
|
} |
2713 |
|
|
2714 |
|
#undef STR_DLNAME |
2715 |
|
#define STR_DLNAME "dlname=" |
2716 |
|
if (strncmp (line, STR_DLNAME, sizeof (STR_DLNAME) - 1) == 0) |
2717 |
|
{ |
2718 |
|
errors += trim (&dlname, &line[sizeof (STR_DLNAME) - 1]); |
2719 |
|
} |
2720 |
|
|
2721 |
|
#undef STR_OLD_LIBRARY |
2722 |
|
#define STR_OLD_LIBRARY "old_library=" |
2723 |
|
else if (strncmp (line, STR_OLD_LIBRARY, |
2724 |
|
sizeof (STR_OLD_LIBRARY) - 1) == 0) |
2725 |
|
{ |
2726 |
|
errors += trim (&old_name, &line[sizeof (STR_OLD_LIBRARY) - 1]); |
2727 |
|
} |
2728 |
|
#undef STR_LIBDIR |
2729 |
|
#define STR_LIBDIR "libdir=" |
2730 |
|
else if (strncmp (line, STR_LIBDIR, sizeof (STR_LIBDIR) - 1) == 0) |
2731 |
|
{ |
2732 |
|
errors += trim (&libdir, &line[sizeof(STR_LIBDIR) - 1]); |
2733 |
|
} |
2734 |
|
|
2735 |
|
#undef STR_DL_DEPLIBS |
2736 |
|
#define STR_DL_DEPLIBS "dependency_libs=" |
2737 |
|
else if (strncmp (line, STR_DL_DEPLIBS, |
2738 |
|
sizeof (STR_DL_DEPLIBS) - 1) == 0) |
2739 |
|
{ |
2740 |
|
errors += trim (&deplibs, &line[sizeof (STR_DL_DEPLIBS) - 1]); |
2741 |
|
} |
2742 |
|
else if (strcmp (line, "installed=yes\n") == 0) |
2743 |
|
{ |
2744 |
|
installed = 1; |
2745 |
|
} |
2746 |
|
else if (strcmp (line, "installed=no\n") == 0) |
2747 |
|
{ |
2748 |
|
installed = 0; |
2749 |
|
} |
2750 |
|
|
2751 |
|
#undef STR_LIBRARY_NAMES |
2752 |
|
#define STR_LIBRARY_NAMES "library_names=" |
2753 |
|
else if (! dlname && strncmp (line, STR_LIBRARY_NAMES, |
2754 |
|
sizeof (STR_LIBRARY_NAMES) - 1) == 0) |
2755 |
|
{ |
2756 |
|
char *last_libname; |
2757 |
|
errors += trim (&dlname, &line[sizeof (STR_LIBRARY_NAMES) - 1]); |
2758 |
|
if (!errors |
2759 |
|
&& dlname |
2760 |
|
&& (last_libname = strrchr (dlname, ' ')) != 0) |
2761 |
|
{ |
2762 |
|
last_libname = lt_estrdup (last_libname + 1); |
2763 |
|
if (!last_libname) |
2764 |
|
{ |
2765 |
|
++errors; |
2766 |
|
goto cleanup; |
2767 |
|
} |
2768 |
|
LT_DLMEM_REASSIGN (dlname, last_libname); |
2769 |
|
} |
2770 |
|
} |
2771 |
|
|
2772 |
|
if (errors) |
2773 |
|
break; |
2774 |
|
} |
2775 |
|
|
2776 |
|
fclose (file); |
2777 |
|
LT_DLFREE (line); |
2778 |
|
|
2779 |
|
/* allocate the handle */ |
2780 |
|
*phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1); |
2781 |
|
if (*phandle == 0) |
2782 |
|
++errors; |
2783 |
|
|
2784 |
|
if (errors) |
2785 |
|
{ |
2786 |
|
free_vars (dlname, old_name, libdir, deplibs); |
2787 |
|
LT_DLFREE (*phandle); |
2788 |
|
goto cleanup; |
2789 |
|
} |
2790 |
|
|
2791 |
|
assert (*phandle); |
2792 |
|
|
2793 |
|
memset (*phandle, 0, sizeof(struct lt_dlhandle_struct)); |
2794 |
|
if (load_deplibs (*phandle, deplibs) == 0) |
2795 |
|
{ |
2796 |
|
newhandle = *phandle; |
2797 |
|
/* find_module may replace newhandle */ |
2798 |
|
if (find_module (&newhandle, dir, libdir, dlname, old_name, installed)) |
2799 |
|
{ |
2800 |
|
unload_deplibs (*phandle); |
2801 |
|
++errors; |
2802 |
|
} |
2803 |
|
} |
2804 |
|
else |
2805 |
|
{ |
2806 |
|
++errors; |
2807 |
|
} |
2808 |
|
|
2809 |
|
free_vars (dlname, old_name, libdir, deplibs); |
2810 |
|
if (errors) |
2811 |
|
{ |
2812 |
|
LT_DLFREE (*phandle); |
2813 |
|
goto cleanup; |
2814 |
|
} |
2815 |
|
|
2816 |
|
if (*phandle != newhandle) |
2817 |
|
{ |
2818 |
|
unload_deplibs (*phandle); |
2819 |
|
} |
2820 |
|
} |
2821 |
|
else |
2822 |
|
{ |
2823 |
|
/* not a libtool module */ |
2824 |
|
*phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1); |
2825 |
|
if (*phandle == 0) |
2826 |
|
{ |
2827 |
|
++errors; |
2828 |
|
goto cleanup; |
2829 |
|
} |
2830 |
|
|
2831 |
|
memset (*phandle, 0, sizeof (struct lt_dlhandle_struct)); |
2832 |
|
newhandle = *phandle; |
2833 |
|
|
2834 |
|
/* If the module has no directory name component, try to find it |
2835 |
|
first in user_search_path and then other prescribed paths. |
2836 |
|
Otherwise (or in any case if the module was not yet found) try |
2837 |
|
opening just the module name as passed. */ |
2838 |
|
if ((dir || (!find_handle (user_search_path, base_name, &newhandle) |
2839 |
|
&& !find_handle (getenv (LTDL_SEARCHPATH_VAR), base_name, |
2840 |
|
&newhandle) |
2841 |
|
#ifdef LTDL_SHLIBPATH_VAR |
2842 |
|
&& !find_handle (getenv (LTDL_SHLIBPATH_VAR), base_name, |
2843 |
|
&newhandle) |
2844 |
|
#endif |
2845 |
|
#ifdef LTDL_SYSSEARCHPATH |
2846 |
|
&& !find_handle (sys_search_path, base_name, &newhandle) |
2847 |
|
#endif |
2848 |
|
))) |
2849 |
|
{ |
2850 |
|
if (tryall_dlopen (&newhandle, filename) != 0) |
2851 |
|
newhandle = 0; |
2852 |
} |
} |
2853 |
last_error = file_not_found_error; |
|
2854 |
return 1; |
if (!newhandle) |
2855 |
|
{ |
2856 |
|
LT_DLFREE (*phandle); |
2857 |
|
++errors; |
2858 |
|
goto cleanup; |
2859 |
|
} |
2860 |
|
} |
2861 |
|
|
2862 |
|
register_handle: |
2863 |
|
LT_DLMEM_REASSIGN (*phandle, newhandle); |
2864 |
|
|
2865 |
|
if ((*phandle)->info.ref_count == 0) |
2866 |
|
{ |
2867 |
|
(*phandle)->info.ref_count = 1; |
2868 |
|
LT_DLMEM_REASSIGN ((*phandle)->info.name, name); |
2869 |
|
|
2870 |
|
LT_DLMUTEX_LOCK (); |
2871 |
|
(*phandle)->next = handles; |
2872 |
|
handles = *phandle; |
2873 |
|
LT_DLMUTEX_UNLOCK (); |
2874 |
|
} |
2875 |
|
|
2876 |
|
LT_DLMUTEX_SETERROR (saved_error); |
2877 |
|
|
2878 |
|
cleanup: |
2879 |
|
LT_DLFREE (dir); |
2880 |
|
LT_DLFREE (name); |
2881 |
|
LT_DLFREE (canonical); |
2882 |
|
|
2883 |
|
return errors; |
2884 |
} |
} |
2885 |
|
|
2886 |
static int |
lt_dlhandle |
2887 |
presym_close (handle) |
scm_lt_dlopen (filename) |
2888 |
lt_dlhandle handle; |
const char *filename; |
2889 |
{ |
{ |
2890 |
/* Just to silence gcc -Wall */ |
lt_dlhandle handle = 0; |
2891 |
handle = 0; |
|
2892 |
return 0; |
/* Just incase we missed a code path in try_dlopen() that reports |
2893 |
|
an error, but forgets to reset handle... */ |
2894 |
|
if (try_dlopen (&handle, filename) != 0) |
2895 |
|
return 0; |
2896 |
|
|
2897 |
|
return handle; |
2898 |
} |
} |
2899 |
|
|
2900 |
static lt_ptr_t |
/* If the last error messge store was `FILE_NOT_FOUND', then return |
2901 |
presym_sym (handle, symbol) |
non-zero. */ |
2902 |
lt_dlhandle handle; |
static int |
2903 |
const char *symbol; |
file_not_found () |
2904 |
{ |
{ |
2905 |
lt_dlsymlist *syms = (lt_dlsymlist*)(handle->handle); |
const char *error = 0; |
2906 |
|
|
2907 |
syms++; |
LT_DLMUTEX_GETERROR (error); |
2908 |
while (syms->address) { |
if (error == LT_DLSTRERROR (FILE_NOT_FOUND)) |
2909 |
if (strcmp(syms->name, symbol) == 0) |
return 1; |
2910 |
return syms->address; |
|
2911 |
syms++; |
return 0; |
|
} |
|
|
last_error = symbol_error; |
|
|
return 0; |
|
2912 |
} |
} |
2913 |
|
|
2914 |
static |
/* If FILENAME has an ARCHIVE_EXT or SHLIB_EXT extension, try to |
2915 |
lt_dltype_t |
open the FILENAME as passed. Otherwise try appending ARCHIVE_EXT, |
2916 |
presym = { LTDL_TYPE_TOP, 0, presym_init, presym_exit, |
and if a file is still not found try again with SHLIB_EXT appended |
2917 |
presym_open, presym_close, presym_sym }; |
instead. */ |
2918 |
|
lt_dlhandle |
2919 |
|
scm_lt_dlopenext (filename) |
2920 |
|
const char *filename; |
2921 |
|
{ |
2922 |
|
lt_dlhandle handle = 0; |
2923 |
|
char * tmp = 0; |
2924 |
|
char * ext = 0; |
2925 |
|
int len; |
2926 |
|
int errors = 0; |
2927 |
|
int file_found = 1; /* until proven otherwise */ |
2928 |
|
|
2929 |
|
if (!filename) |
2930 |
|
{ |
2931 |
|
return scm_lt_dlopen (filename); |
2932 |
|
} |
2933 |
|
|
2934 |
|
assert (filename); |
2935 |
|
|
2936 |
|
len = LT_STRLEN (filename); |
2937 |
|
ext = strrchr (filename, '.'); |
2938 |
|
|
2939 |
|
/* If FILENAME already bears a suitable extension, there is no need |
2940 |
|
to try appending additional extensions. */ |
2941 |
|
if (ext && ((strcmp (ext, archive_ext) == 0) |
2942 |
|
#ifdef LTDL_SHLIB_EXT |
2943 |
|
|| (strcmp (ext, shlib_ext) == 0) |
2944 |
|
#endif |
2945 |
|
)) |
2946 |
|
{ |
2947 |
|
return scm_lt_dlopen (filename); |
2948 |
|
} |
2949 |
|
|
2950 |
|
/* First try appending ARCHIVE_EXT. */ |
2951 |
|
tmp = LT_EMALLOC (char, len + LT_STRLEN (archive_ext) + 1); |
2952 |
|
if (!tmp) |
2953 |
|
return 0; |
2954 |
|
|
2955 |
|
strcpy (tmp, filename); |
2956 |
|
strcat (tmp, archive_ext); |
2957 |
|
errors = try_dlopen (&handle, tmp); |
2958 |
|
|
2959 |
|
/* If we found FILENAME, stop searching -- whether we were able to |
2960 |
|
load the file as a module or not. If the file exists but loading |
2961 |
|
failed, it is better to return an error message here than to |
2962 |
|
report FILE_NOT_FOUND when the alternatives (foo.so etc) are not |
2963 |
|
in the module search path. */ |
2964 |
|
if (handle || ((errors > 0) && !file_not_found ())) |
2965 |
|
{ |
2966 |
|
LT_DLFREE (tmp); |
2967 |
|
return handle; |
2968 |
|
} |
2969 |
|
|
2970 |
|
#ifdef LTDL_SHLIB_EXT |
2971 |
|
/* Try appending SHLIB_EXT. */ |
2972 |
|
if (LT_STRLEN (shlib_ext) > LT_STRLEN (archive_ext)) |
2973 |
|
{ |
2974 |
|
LT_DLFREE (tmp); |
2975 |
|
tmp = LT_EMALLOC (char, len + LT_STRLEN (shlib_ext) + 1); |
2976 |
|
if (!tmp) |
2977 |
|
return 0; |
2978 |
|
|
2979 |
|
strcpy (tmp, filename); |
2980 |
|
} |
2981 |
|
else |
2982 |
|
{ |
2983 |
|
tmp[len] = LT_EOS_CHAR; |
2984 |
|
} |
2985 |
|
|
2986 |
|
strcat(tmp, shlib_ext); |
2987 |
|
errors = try_dlopen (&handle, tmp); |
2988 |
|
|
2989 |
|
/* As before, if the file was found but loading failed, return now |
2990 |
|
with the current error message. */ |
2991 |
|
if (handle || ((errors > 0) && !file_not_found ())) |
2992 |
|
{ |
2993 |
|
LT_DLFREE (tmp); |
2994 |
|
return handle; |
2995 |
|
} |
2996 |
|
#endif |
2997 |
|
|
2998 |
|
/* Still here? Then we really did fail to locate any of the file |
2999 |
|
names we tried. */ |
3000 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); |
3001 |
|
LT_DLFREE (tmp); |
3002 |
|
return 0; |
3003 |
|
} |
3004 |
|
|
|
#undef LTDL_TYPE_TOP |
|
|
#define LTDL_TYPE_TOP &presym |
|
3005 |
|
|
3006 |
static char *user_search_path = 0; |
int |
3007 |
static lt_dlhandle handles = 0; |
lt_argz_insert (pargz, pargz_len, before, entry) |
3008 |
static int initialized = 0; |
char **pargz; |
3009 |
|
size_t *pargz_len; |
3010 |
|
char *before; |
3011 |
|
const char *entry; |
3012 |
|
{ |
3013 |
|
error_t error; |
3014 |
|
|
3015 |
|
if ((error = argz_insert (pargz, pargz_len, before, entry))) |
3016 |
|
{ |
3017 |
|
switch (error) |
3018 |
|
{ |
3019 |
|
case ENOMEM: |
3020 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); |
3021 |
|
break; |
3022 |
|
default: |
3023 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (UNKNOWN)); |
3024 |
|
break; |
3025 |
|
} |
3026 |
|
return 1; |
3027 |
|
} |
3028 |
|
|
3029 |
static lt_dltype_t *types = LTDL_TYPE_TOP; |
return 0; |
3030 |
#undef LTDL_TYPE_TOP |
} |
3031 |
|
|
3032 |
int |
int |
3033 |
lt_dlinit LTDL_PARAMS((void)) |
lt_argz_insertinorder (pargz, pargz_len, entry) |
3034 |
{ |
char **pargz; |
3035 |
/* initialize libltdl */ |
size_t *pargz_len; |
3036 |
lt_dltype_t **type = &types; |
const char *entry; |
3037 |
int typecount = 0; |
{ |
3038 |
|
char *before = 0; |
3039 |
|
|
3040 |
|
assert (pargz); |
3041 |
|
assert (pargz_len); |
3042 |
|
assert (entry && *entry); |
3043 |
|
|
3044 |
|
if (*pargz) |
3045 |
|
while ((before = argz_next (*pargz, *pargz_len, before))) |
3046 |
|
{ |
3047 |
|
int cmp = strcmp (entry, before); |
3048 |
|
|
3049 |
|
if (cmp < 0) break; |
3050 |
|
if (cmp == 0) return 0; /* No duplicates! */ |
3051 |
|
} |
3052 |
|
|
3053 |
|
return lt_argz_insert (pargz, pargz_len, before, entry); |
3054 |
|
} |
3055 |
|
|
3056 |
if (initialized) { /* Initialize only at first call. */ |
int |
3057 |
initialized++; |
scm_lt_argz_insertdir (pargz, pargz_len, dirnam, dp) |
3058 |
return 0; |
char **pargz; |
3059 |
|
size_t *pargz_len; |
3060 |
|
const char *dirnam; |
3061 |
|
struct dirent *dp; |
3062 |
|
{ |
3063 |
|
char *buf = 0; |
3064 |
|
size_t buf_len = 0; |
3065 |
|
char *end = 0; |
3066 |
|
size_t end_offset = 0; |
3067 |
|
size_t dir_len = 0; |
3068 |
|
int errors = 0; |
3069 |
|
|
3070 |
|
assert (pargz); |
3071 |
|
assert (pargz_len); |
3072 |
|
assert (dp); |
3073 |
|
|
3074 |
|
dir_len = LT_STRLEN (dirnam); |
3075 |
|
end = dp->d_name + LT_D_NAMLEN(dp); |
3076 |
|
|
3077 |
|
/* Ignore version numbers. */ |
3078 |
|
{ |
3079 |
|
char *p; |
3080 |
|
for (p = end; p -1 > dp->d_name; --p) |
3081 |
|
if (strchr (".0123456789", p[-1]) == 0) |
3082 |
|
break; |
3083 |
|
|
3084 |
|
if (*p == '.') |
3085 |
|
end = p; |
3086 |
|
} |
3087 |
|
|
3088 |
|
/* Ignore filename extension. */ |
3089 |
|
{ |
3090 |
|
char *p; |
3091 |
|
for (p = end -1; p > dp->d_name; --p) |
3092 |
|
if (*p == '.') |
3093 |
|
{ |
3094 |
|
end = p; |
3095 |
|
break; |
3096 |
|
} |
3097 |
|
} |
3098 |
|
|
3099 |
|
/* Prepend the directory name. */ |
3100 |
|
end_offset = end - dp->d_name; |
3101 |
|
buf_len = dir_len + 1+ end_offset; |
3102 |
|
buf = LT_EMALLOC (char, 1+ buf_len); |
3103 |
|
if (!buf) |
3104 |
|
return ++errors; |
3105 |
|
|
3106 |
|
assert (buf); |
3107 |
|
|
3108 |
|
strcpy (buf, dirnam); |
3109 |
|
strcat (buf, "/"); |
3110 |
|
strncat (buf, dp->d_name, end_offset); |
3111 |
|
buf[buf_len] = LT_EOS_CHAR; |
3112 |
|
|
3113 |
|
/* Try to insert (in order) into ARGZ/ARGZ_LEN. */ |
3114 |
|
if (lt_argz_insertinorder (pargz, pargz_len, buf) != 0) |
3115 |
|
++errors; |
3116 |
|
|
3117 |
|
LT_DLFREE (buf); |
3118 |
|
|
3119 |
|
return errors; |
3120 |
|
} |
3121 |
|
|
3122 |
|
static int |
3123 |
|
list_files_by_dir (dirnam, pargz, pargz_len) |
3124 |
|
const char *dirnam; |
3125 |
|
char **pargz; |
3126 |
|
size_t *pargz_len; |
3127 |
|
{ |
3128 |
|
DIR *dirp = 0; |
3129 |
|
int errors = 0; |
3130 |
|
|
3131 |
|
assert (dirnam && *dirnam); |
3132 |
|
assert (pargz); |
3133 |
|
assert (pargz_len); |
3134 |
|
assert (dirnam[LT_STRLEN(dirnam) -1] != '/'); |
3135 |
|
|
3136 |
|
dirp = opendir (dirnam); |
3137 |
|
if (dirp) |
3138 |
|
{ |
3139 |
|
struct dirent *dp = 0; |
3140 |
|
|
3141 |
|
while ((dp = readdir (dirp))) |
3142 |
|
if (dp->d_name[0] != '.') |
3143 |
|
if (scm_lt_argz_insertdir (pargz, pargz_len, dirnam, dp)) |
3144 |
|
{ |
3145 |
|
++errors; |
3146 |
|
break; |
3147 |
|
} |
3148 |
|
|
3149 |
|
closedir (dirp); |
3150 |
|
} |
3151 |
|
else |
3152 |
|
++errors; |
3153 |
|
|
3154 |
|
return errors; |
3155 |
|
} |
3156 |
|
|
3157 |
|
|
3158 |
|
/* If there are any files in DIRNAME, call the function passed in |
3159 |
|
DATA1 (with the name of each file and DATA2 as arguments). */ |
3160 |
|
static int |
3161 |
|
foreachfile_callback (dirname, data1, data2) |
3162 |
|
char *dirname; |
3163 |
|
lt_ptr data1; |
3164 |
|
lt_ptr data2; |
3165 |
|
{ |
3166 |
|
int (*func) LT_PARAMS((const char *filename, lt_ptr data)) |
3167 |
|
= (int (*) LT_PARAMS((const char *filename, lt_ptr data))) data1; |
3168 |
|
|
3169 |
|
int is_done = 0; |
3170 |
|
char *argz = 0; |
3171 |
|
size_t argz_len = 0; |
3172 |
|
|
3173 |
|
if (list_files_by_dir (dirname, &argz, &argz_len) != 0) |
3174 |
|
goto cleanup; |
3175 |
|
if (!argz) |
3176 |
|
goto cleanup; |
3177 |
|
|
3178 |
|
{ |
3179 |
|
char *filename = 0; |
3180 |
|
while ((filename = argz_next (argz, argz_len, filename))) |
3181 |
|
if ((is_done = (*func) (filename, data2))) |
3182 |
|
break; |
3183 |
|
} |
3184 |
|
|
3185 |
|
cleanup: |
3186 |
|
LT_DLFREE (argz); |
3187 |
|
|
3188 |
|
return is_done; |
3189 |
|
} |
3190 |
|
|
3191 |
|
|
3192 |
|
/* Call FUNC for each unique extensionless file in SEARCH_PATH, along |
3193 |
|
with DATA. The filenames passed to FUNC would be suitable for |
3194 |
|
passing to scm_lt_dlopenext. The extensions are stripped so that |
3195 |
|
individual modules do not generate several entries (e.g. libfoo.la, |
3196 |
|
libfoo.so, libfoo.so.1, libfoo.so.1.0.0). If SEARCH_PATH is NULL, |
3197 |
|
then the same directories that scm_lt_dlopen would search are examined. */ |
3198 |
|
int |
3199 |
|
scm_lt_dlforeachfile (search_path, func, data) |
3200 |
|
const char *search_path; |
3201 |
|
int (*func) LT_PARAMS ((const char *filename, lt_ptr data)); |
3202 |
|
lt_ptr data; |
3203 |
|
{ |
3204 |
|
int is_done = 0; |
3205 |
|
|
3206 |
|
if (search_path) |
3207 |
|
{ |
3208 |
|
/* If a specific path was passed, search only the directories |
3209 |
|
listed in it. */ |
3210 |
|
is_done = foreach_dirinpath (search_path, 0, |
3211 |
|
foreachfile_callback, func, data); |
3212 |
|
} |
3213 |
|
else |
3214 |
|
{ |
3215 |
|
/* Otherwise search the default paths. */ |
3216 |
|
is_done = foreach_dirinpath (user_search_path, 0, |
3217 |
|
foreachfile_callback, func, data); |
3218 |
|
if (!is_done) |
3219 |
|
{ |
3220 |
|
is_done = foreach_dirinpath (getenv("LTDL_LIBRARY_PATH"), 0, |
3221 |
|
foreachfile_callback, func, data); |
3222 |
} |
} |
|
handles = 0; |
|
|
user_search_path = 0; /* empty search path */ |
|
3223 |
|
|
3224 |
while (*type) { |
#ifdef LTDL_SHLIBPATH_VAR |
3225 |
if ((*type)->mod_init()) |
if (!is_done) |
3226 |
*type = (*type)->next; /* Remove it from the list */ |
{ |
3227 |
else { |
is_done = foreach_dirinpath (getenv(LTDL_SHLIBPATH_VAR), 0, |
3228 |
type = &(*type)->next; /* Keep it */ |
foreachfile_callback, func, data); |
|
typecount++; |
|
|
} |
|
3229 |
} |
} |
3230 |
if (typecount == 0) { |
#endif |
3231 |
last_error = dlopen_not_supported_error; |
#ifdef LTDL_SYSSEARCHPATH |
3232 |
return 1; |
if (!is_done) |
3233 |
|
{ |
3234 |
|
is_done = foreach_dirinpath (getenv(LTDL_SYSSEARCHPATH), 0, |
3235 |
|
foreachfile_callback, func, data); |
3236 |
} |
} |
3237 |
last_error = 0; |
#endif |
3238 |
initialized = 1; |
} |
3239 |
return 0; |
|
3240 |
|
return is_done; |
3241 |
} |
} |
3242 |
|
|
3243 |
int |
int |
3244 |
lt_dlpreload (preloaded) |
scm_lt_dlclose (handle) |
3245 |
const lt_dlsymlist *preloaded; |
lt_dlhandle handle; |
3246 |
{ |
{ |
3247 |
if (preloaded) |
lt_dlhandle cur, last; |
3248 |
return presym_add_symlist(preloaded); |
int errors = 0; |
3249 |
presym_free_symlists(); |
|
3250 |
if (default_preloaded_symbols) |
LT_DLMUTEX_LOCK (); |
3251 |
return lt_dlpreload(default_preloaded_symbols); |
|
3252 |
return 0; |
/* check whether the handle is valid */ |
3253 |
|
last = cur = handles; |
3254 |
|
while (cur && handle != cur) |
3255 |
|
{ |
3256 |
|
last = cur; |
3257 |
|
cur = cur->next; |
3258 |
|
} |
3259 |
|
|
3260 |
|
if (!cur) |
3261 |
|
{ |
3262 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); |
3263 |
|
++errors; |
3264 |
|
goto done; |
3265 |
|
} |
3266 |
|
|
3267 |
|
handle->info.ref_count--; |
3268 |
|
|
3269 |
|
/* Note that even with resident modules, we must track the ref_count |
3270 |
|
correctly incase the user decides to reset the residency flag |
3271 |
|
later (even though the API makes no provision for that at the |
3272 |
|
moment). */ |
3273 |
|
if (handle->info.ref_count <= 0 && !LT_DLIS_RESIDENT (handle)) |
3274 |
|
{ |
3275 |
|
lt_user_data data = handle->loader->dlloader_data; |
3276 |
|
|
3277 |
|
if (handle != handles) |
3278 |
|
{ |
3279 |
|
last->next = handle->next; |
3280 |
|
} |
3281 |
|
else |
3282 |
|
{ |
3283 |
|
handles = handle->next; |
3284 |
|
} |
3285 |
|
|
3286 |
|
errors += handle->loader->module_close (data, handle->module); |
3287 |
|
errors += unload_deplibs(handle); |
3288 |
|
|
3289 |
|
LT_DLFREE (handle->info.filename); |
3290 |
|
LT_DLFREE (handle->info.name); |
3291 |
|
LT_DLFREE (handle); |
3292 |
|
|
3293 |
|
goto done; |
3294 |
|
} |
3295 |
|
|
3296 |
|
if (LT_DLIS_RESIDENT (handle)) |
3297 |
|
{ |
3298 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CLOSE_RESIDENT_MODULE)); |
3299 |
|
++errors; |
3300 |
|
} |
3301 |
|
|
3302 |
|
done: |
3303 |
|
LT_DLMUTEX_UNLOCK (); |
3304 |
|
|
3305 |
|
return errors; |
3306 |
|
} |
3307 |
|
|
3308 |
|
lt_ptr |
3309 |
|
scm_lt_dlsym (handle, symbol) |
3310 |
|
lt_dlhandle handle; |
3311 |
|
const char *symbol; |
3312 |
|
{ |
3313 |
|
int lensym; |
3314 |
|
char lsym[LT_SYMBOL_LENGTH]; |
3315 |
|
char *sym; |
3316 |
|
lt_ptr address; |
3317 |
|
lt_user_data data; |
3318 |
|
|
3319 |
|
if (!handle) |
3320 |
|
{ |
3321 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); |
3322 |
|
return 0; |
3323 |
|
} |
3324 |
|
|
3325 |
|
if (!symbol) |
3326 |
|
{ |
3327 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); |
3328 |
|
return 0; |
3329 |
|
} |
3330 |
|
|
3331 |
|
lensym = LT_STRLEN (symbol) + LT_STRLEN (handle->loader->sym_prefix) |
3332 |
|
+ LT_STRLEN (handle->info.name); |
3333 |
|
|
3334 |
|
if (lensym + LT_SYMBOL_OVERHEAD < LT_SYMBOL_LENGTH) |
3335 |
|
{ |
3336 |
|
sym = lsym; |
3337 |
|
} |
3338 |
|
else |
3339 |
|
{ |
3340 |
|
sym = LT_EMALLOC (char, lensym + LT_SYMBOL_OVERHEAD + 1); |
3341 |
|
if (!sym) |
3342 |
|
{ |
3343 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (BUFFER_OVERFLOW)); |
3344 |
|
return 0; |
3345 |
|
} |
3346 |
|
} |
3347 |
|
|
3348 |
|
data = handle->loader->dlloader_data; |
3349 |
|
if (handle->info.name) |
3350 |
|
{ |
3351 |
|
const char *saved_error; |
3352 |
|
|
3353 |
|
LT_DLMUTEX_GETERROR (saved_error); |
3354 |
|
|
3355 |
|
/* this is a libtool module */ |
3356 |
|
if (handle->loader->sym_prefix) |
3357 |
|
{ |
3358 |
|
strcpy(sym, handle->loader->sym_prefix); |
3359 |
|
strcat(sym, handle->info.name); |
3360 |
|
} |
3361 |
|
else |
3362 |
|
{ |
3363 |
|
strcpy(sym, handle->info.name); |
3364 |
|
} |
3365 |
|
|
3366 |
|
strcat(sym, "_LTX_"); |
3367 |
|
strcat(sym, symbol); |
3368 |
|
|
3369 |
|
/* try "modulename_LTX_symbol" */ |
3370 |
|
address = handle->loader->find_sym (data, handle->module, sym); |
3371 |
|
if (address) |
3372 |
|
{ |
3373 |
|
if (sym != lsym) |
3374 |
|
{ |
3375 |
|
LT_DLFREE (sym); |
3376 |
|
} |
3377 |
|
return address; |
3378 |
|
} |
3379 |
|
LT_DLMUTEX_SETERROR (saved_error); |
3380 |
|
} |
3381 |
|
|
3382 |
|
/* otherwise try "symbol" */ |
3383 |
|
if (handle->loader->sym_prefix) |
3384 |
|
{ |
3385 |
|
strcpy(sym, handle->loader->sym_prefix); |
3386 |
|
strcat(sym, symbol); |
3387 |
|
} |
3388 |
|
else |
3389 |
|
{ |
3390 |
|
strcpy(sym, symbol); |
3391 |
|
} |
3392 |
|
|
3393 |
|
address = handle->loader->find_sym (data, handle->module, sym); |
3394 |
|
if (sym != lsym) |
3395 |
|
{ |
3396 |
|
LT_DLFREE (sym); |
3397 |
|
} |
3398 |
|
|
3399 |
|
return address; |
3400 |
} |
} |
3401 |
|
|
3402 |
int |
const char * |
3403 |
lt_dlpreload_default (preloaded) |
scm_lt_dlerror () |
|
const lt_dlsymlist *preloaded; |
|
3404 |
{ |
{ |
3405 |
default_preloaded_symbols = preloaded; |
const char *error; |
3406 |
return 0; |
|
3407 |
|
LT_DLMUTEX_GETERROR (error); |
3408 |
|
LT_DLMUTEX_SETERROR (0); |
3409 |
|
|
3410 |
|
return error ? error : LT_DLSTRERROR (UNKNOWN); |
3411 |
} |
} |
3412 |
|
|
3413 |
int |
int |
3414 |
lt_dlexit LTDL_PARAMS((void)) |
lt_dlpath_insertdir (ppath, before, dir) |
3415 |
{ |
char **ppath; |
3416 |
/* shut down libltdl */ |
char *before; |
3417 |
lt_dltype_t *type = types; |
const char *dir; |
3418 |
int errors; |
{ |
3419 |
|
int errors = 0; |
3420 |
if (!initialized) { |
char *canonical = 0; |
3421 |
last_error = shutdown_error; |
char *argz = 0; |
3422 |
return 1; |
size_t argz_len = 0; |
3423 |
} |
|
3424 |
if (initialized != 1) { /* shut down only at last call. */ |
assert (ppath); |
3425 |
initialized--; |
assert (dir && *dir); |
3426 |
return 0; |
|
3427 |
} |
if (canonicalize_path (dir, &canonical) != 0) |
3428 |
/* close all modules */ |
{ |
3429 |
errors = 0; |
++errors; |
3430 |
while (handles) { |
goto cleanup; |
3431 |
/* FIXME: what if a module depends on another one? */ |
} |
3432 |
if (lt_dlclose(handles)) |
|
3433 |
errors++; |
assert (canonical && *canonical); |
3434 |
} |
|
3435 |
initialized = 0; |
/* If *PPATH is empty, set it to DIR. */ |
3436 |
while (type) { |
if (*ppath == 0) |
3437 |
if (type->mod_exit()) |
{ |
3438 |
errors++; |
assert (!before); /* BEFORE cannot be set without PPATH. */ |
3439 |
type = type->next; |
assert (dir); /* Without DIR, don't call this function! */ |
3440 |
} |
|
3441 |
return errors; |
*ppath = lt_estrdup (dir); |
3442 |
|
if (*ppath == 0) |
3443 |
|
++errors; |
3444 |
|
|
3445 |
|
return errors; |
3446 |
|
} |
3447 |
|
|
3448 |
|
assert (ppath && *ppath); |
3449 |
|
|
3450 |
|
if (argzize_path (*ppath, &argz, &argz_len) != 0) |
3451 |
|
{ |
3452 |
|
++errors; |
3453 |
|
goto cleanup; |
3454 |
|
} |
3455 |
|
|
3456 |
|
/* Convert BEFORE into an equivalent offset into ARGZ. This only works |
3457 |
|
if *PPATH is already canonicalized, and hence does not change length |
3458 |
|
with respect to ARGZ. We canonicalize each entry as it is added to |
3459 |
|
the search path, and don't call this function with (uncanonicalized) |
3460 |
|
user paths, so this is a fair assumption. */ |
3461 |
|
if (before) |
3462 |
|
{ |
3463 |
|
assert (*ppath <= before); |
3464 |
|
assert (before - *ppath <= strlen (*ppath)); |
3465 |
|
|
3466 |
|
before = before - *ppath + argz; |
3467 |
|
} |
3468 |
|
|
3469 |
|
if (lt_argz_insert (&argz, &argz_len, before, dir) != 0) |
3470 |
|
{ |
3471 |
|
++errors; |
3472 |
|
goto cleanup; |
3473 |
|
} |
3474 |
|
|
3475 |
|
argz_stringify (argz, argz_len, LT_PATHSEP_CHAR); |
3476 |
|
LT_DLMEM_REASSIGN (*ppath, argz); |
3477 |
|
|
3478 |
|
cleanup: |
3479 |
|
LT_DLFREE (canonical); |
3480 |
|
LT_DLFREE (argz); |
3481 |
|
|
3482 |
|
return errors; |
3483 |
} |
} |
3484 |
|
|
3485 |
static int |
int |
3486 |
tryall_dlopen (handle, filename) |
scm_lt_dladdsearchdir (search_dir) |
3487 |
lt_dlhandle *handle; |
const char *search_dir; |
|
const char *filename; |
|
3488 |
{ |
{ |
3489 |
lt_dlhandle cur; |
int errors = 0; |
|
lt_dltype_t *type = types; |
|
|
const char *saved_error = last_error; |
|
|
|
|
|
/* check whether the module was already opened */ |
|
|
cur = handles; |
|
|
while (cur) { |
|
|
if (!cur->filename && !filename) |
|
|
break; |
|
|
if (cur->filename && filename && |
|
|
strcmp(cur->filename, filename) == 0) |
|
|
break; |
|
|
cur = cur->next; |
|
|
} |
|
|
if (cur) { |
|
|
cur->usage++; |
|
|
*handle = cur; |
|
|
return 0; |
|
|
} |
|
|
|
|
|
cur = *handle; |
|
|
if (filename) { |
|
|
cur->filename = strdup(filename); |
|
|
if (!cur->filename) { |
|
|
last_error = memory_error; |
|
|
return 1; |
|
|
} |
|
|
} else |
|
|
cur->filename = 0; |
|
|
while (type) { |
|
|
if (type->lib_open(cur, filename) == 0) |
|
|
break; |
|
|
type = type->next; |
|
|
} |
|
|
if (!type) { |
|
|
if (cur->filename) |
|
|
lt_dlfree(cur->filename); |
|
|
return 1; |
|
|
} |
|
|
cur->type = type; |
|
|
last_error = saved_error; |
|
|
return 0; |
|
|
} |
|
3490 |
|
|
3491 |
static int |
if (search_dir && *search_dir) |
3492 |
find_module (handle, dir, libdir, dlname, old_name, installed) |
{ |
3493 |
lt_dlhandle *handle; |
LT_DLMUTEX_LOCK (); |
3494 |
const char *dir; |
if (lt_dlpath_insertdir (&user_search_path, 0, search_dir) != 0) |
3495 |
const char *libdir; |
++errors; |
3496 |
const char *dlname; |
LT_DLMUTEX_UNLOCK (); |
3497 |
const char *old_name; |
} |
3498 |
int installed; |
|
3499 |
{ |
return errors; |
|
int error; |
|
|
char *filename; |
|
|
/* try to open the old library first; if it was dlpreopened, |
|
|
we want the preopened version of it, even if a dlopenable |
|
|
module is available */ |
|
|
if (old_name && tryall_dlopen(handle, old_name) == 0) |
|
|
return 0; |
|
|
/* try to open the dynamic library */ |
|
|
if (dlname) { |
|
|
/* try to open the installed module */ |
|
|
if (installed && libdir) { |
|
|
filename = (char*) |
|
|
lt_dlmalloc(strlen(libdir)+1+strlen(dlname)+1); |
|
|
if (!filename) { |
|
|
last_error = memory_error; |
|
|
return 1; |
|
|
} |
|
|
strcpy(filename, libdir); |
|
|
strcat(filename, "/"); |
|
|
strcat(filename, dlname); |
|
|
error = tryall_dlopen(handle, filename) == 0; |
|
|
lt_dlfree(filename); |
|
|
if (error) |
|
|
return 0; |
|
|
} |
|
|
/* try to open the not-installed module */ |
|
|
if (!installed) { |
|
|
filename = (char*) |
|
|
lt_dlmalloc((dir ? strlen(dir) : 0) |
|
|
+ strlen(objdir) + strlen(dlname) + 1); |
|
|
if (!filename) { |
|
|
last_error = memory_error; |
|
|
return 1; |
|
|
} |
|
|
if (dir) |
|
|
strcpy(filename, dir); |
|
|
else |
|
|
*filename = 0; |
|
|
strcat(filename, objdir); |
|
|
strcat(filename, dlname); |
|
|
|
|
|
error = tryall_dlopen(handle, filename) == 0; |
|
|
lt_dlfree(filename); |
|
|
if (error) |
|
|
return 0; |
|
|
} |
|
|
/* hmm, maybe it was moved to another directory */ |
|
|
{ |
|
|
filename = (char*) |
|
|
lt_dlmalloc((dir ? strlen(dir) : 0) |
|
|
+ strlen(dlname) + 1); |
|
|
if (dir) |
|
|
strcpy(filename, dir); |
|
|
else |
|
|
*filename = 0; |
|
|
strcat(filename, dlname); |
|
|
error = tryall_dlopen(handle, filename) == 0; |
|
|
lt_dlfree(filename); |
|
|
if (error) |
|
|
return 0; |
|
|
} |
|
|
} |
|
|
last_error = file_not_found_error; |
|
|
return 1; |
|
3500 |
} |
} |
3501 |
|
|
3502 |
static lt_ptr_t |
int |
3503 |
find_file (basename, search_path, pdir, handle) |
scm_lt_dlinsertsearchdir (before, search_dir) |
3504 |
const char *basename; |
const char *before; |
3505 |
const char *search_path; |
const char *search_dir; |
3506 |
char **pdir; |
{ |
3507 |
lt_dlhandle *handle; |
int errors = 0; |
3508 |
{ |
|
3509 |
/* when handle != NULL search a library, otherwise a file */ |
if (before) |
3510 |
/* return NULL on failure, otherwise the file/handle */ |
{ |
3511 |
|
LT_DLMUTEX_LOCK (); |
3512 |
char *filename = 0; |
if ((before < user_search_path) |
3513 |
int filenamesize = 0; |
|| (before >= user_search_path + LT_STRLEN (user_search_path))) |
3514 |
const char *next = search_path; |
{ |
3515 |
int lenbase = strlen(basename); |
LT_DLMUTEX_UNLOCK (); |
3516 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_POSITION)); |
3517 |
if (!next || !*next) { |
return 1; |
3518 |
last_error = file_not_found_error; |
} |
3519 |
return 0; |
LT_DLMUTEX_UNLOCK (); |
3520 |
} |
} |
3521 |
while (next) { |
|
3522 |
int lendir; |
if (search_dir && *search_dir) |
3523 |
const char *cur = next; |
{ |
3524 |
|
LT_DLMUTEX_LOCK (); |
3525 |
next = strchr(cur, ':'); |
if (lt_dlpath_insertdir (&user_search_path, |
3526 |
if (!next) |
(char *) before, search_dir) != 0) |
3527 |
next = cur + strlen(cur); |
{ |
3528 |
lendir = next - cur; |
++errors; |
|
if (*next == ':') |
|
|
++next; |
|
|
else |
|
|
next = 0; |
|
|
if (lendir == 0) |
|
|
continue; |
|
|
if (lendir + 1 + lenbase >= filenamesize) { |
|
|
if (filename) |
|
|
lt_dlfree(filename); |
|
|
filenamesize = lendir + 1 + lenbase + 1; |
|
|
filename = (char*) lt_dlmalloc(filenamesize); |
|
|
if (!filename) { |
|
|
last_error = memory_error; |
|
|
return 0; |
|
|
} |
|
|
} |
|
|
strncpy(filename, cur, lendir); |
|
|
if (filename[lendir-1] != '/') |
|
|
filename[lendir++] = '/'; |
|
|
strcpy(filename+lendir, basename); |
|
|
if (handle) { |
|
|
if (tryall_dlopen(handle, filename) == 0) { |
|
|
lt_dlfree(filename); |
|
|
return (lt_ptr_t) handle; |
|
|
} |
|
|
} else { |
|
|
FILE *file = fopen(filename, LTDL_READTEXT_MODE); |
|
|
fprintf (stderr, "tried %s: %p\n", filename, file); |
|
|
if (file) { |
|
|
if (*pdir) |
|
|
lt_dlfree(*pdir); |
|
|
filename[lendir] = '\0'; |
|
|
*pdir = strdup(filename); |
|
|
if (!*pdir) { |
|
|
/* We could have even avoided the |
|
|
strdup, but there would be some |
|
|
memory overhead. */ |
|
|
*pdir = filename; |
|
|
} else |
|
|
lt_dlfree(filename); |
|
|
return (lt_ptr_t) file; |
|
|
} |
|
|
} |
|
3529 |
} |
} |
3530 |
if (filename) |
LT_DLMUTEX_UNLOCK (); |
3531 |
lt_dlfree(filename); |
} |
3532 |
last_error = file_not_found_error; |
|
3533 |
return 0; |
return errors; |
3534 |
} |
} |
3535 |
|
|
3536 |
static int |
int |
3537 |
load_deplibs(handle, deplibs) |
scm_lt_dlsetsearchpath (search_path) |
3538 |
lt_dlhandle handle; |
const char *search_path; |
3539 |
const char *deplibs; |
{ |
3540 |
{ |
int errors = 0; |
3541 |
/* FIXME: load deplibs */ |
|
3542 |
handle->depcount = 0; |
LT_DLMUTEX_LOCK (); |
3543 |
handle->deplibs = 0; |
LT_DLFREE (user_search_path); |
3544 |
/* Just to silence gcc -Wall */ |
LT_DLMUTEX_UNLOCK (); |
3545 |
deplibs = 0; |
|
3546 |
return 0; |
if (!search_path || !LT_STRLEN (search_path)) |
3547 |
|
{ |
3548 |
|
return errors; |
3549 |
|
} |
3550 |
|
|
3551 |
|
LT_DLMUTEX_LOCK (); |
3552 |
|
if (canonicalize_path (search_path, &user_search_path) != 0) |
3553 |
|
++errors; |
3554 |
|
LT_DLMUTEX_UNLOCK (); |
3555 |
|
|
3556 |
|
return errors; |
3557 |
} |
} |
3558 |
|
|
3559 |
static int |
const char * |
3560 |
unload_deplibs(handle) |
scm_lt_dlgetsearchpath () |
|
lt_dlhandle handle; |
|
3561 |
{ |
{ |
3562 |
/* FIXME: unload deplibs */ |
const char *saved_path; |
3563 |
/* Just to silence gcc -Wall */ |
|
3564 |
handle = 0; |
LT_DLMUTEX_LOCK (); |
3565 |
return 0; |
saved_path = user_search_path; |
3566 |
|
LT_DLMUTEX_UNLOCK (); |
3567 |
|
|
3568 |
|
return saved_path; |
3569 |
} |
} |
3570 |
|
|
3571 |
static inline int |
int |
3572 |
trim (dest, str) |
scm_lt_dlmakeresident (handle) |
3573 |
char **dest; |
lt_dlhandle handle; |
|
const char *str; |
|
3574 |
{ |
{ |
3575 |
/* remove the leading and trailing "'" from str |
int errors = 0; |
3576 |
and store the result in dest */ |
|
3577 |
char *tmp; |
if (!handle) |
3578 |
const char *end = strrchr(str, '\''); |
{ |
3579 |
int len = strlen(str); |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); |
3580 |
|
++errors; |
3581 |
if (*dest) |
} |
3582 |
lt_dlfree(*dest); |
else |
3583 |
if (len > 3 && str[0] == '\'') { |
{ |
3584 |
tmp = (char*) lt_dlmalloc(end - str); |
LT_DLSET_FLAG (handle, LT_DLRESIDENT_FLAG); |
3585 |
if (!tmp) { |
} |
3586 |
last_error = memory_error; |
|
3587 |
return 1; |
return errors; |
|
} |
|
|
strncpy(tmp, &str[1], (end - str) - 1); |
|
|
tmp[len-3] = '\0'; |
|
|
*dest = tmp; |
|
|
} else |
|
|
*dest = 0; |
|
|
return 0; |
|
3588 |
} |
} |
3589 |
|
|
3590 |
static inline int |
int |
3591 |
free_vars(dir, name, dlname, oldname, libdir, deplibs) |
scm_lt_dlisresident (handle) |
3592 |
char *dir; |
lt_dlhandle handle; |
3593 |
char *name; |
{ |
3594 |
char *dlname; |
if (!handle) |
3595 |
char *oldname; |
{ |
3596 |
char *libdir; |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); |
3597 |
char *deplibs; |
return -1; |
3598 |
{ |
} |
3599 |
if (dir) |
|
3600 |
lt_dlfree(dir); |
return LT_DLIS_RESIDENT (handle); |
|
if (name) |
|
|
lt_dlfree(name); |
|
|
if (dlname) |
|
|
lt_dlfree(dlname); |
|
|
if (oldname) |
|
|
lt_dlfree(oldname); |
|
|
if (libdir) |
|
|
lt_dlfree(libdir); |
|
|
if (deplibs) |
|
|
lt_dlfree(deplibs); |
|
|
return 0; |
|
3601 |
} |
} |
3602 |
|
|
3603 |
lt_dlhandle |
|
3604 |
lt_dlopen (filename) |
|
3605 |
const char *filename; |
|
3606 |
|
/* --- MODULE INFORMATION --- */ |
3607 |
|
|
3608 |
|
const lt_dlinfo * |
3609 |
|
scm_lt_dlgetinfo (handle) |
3610 |
|
lt_dlhandle handle; |
3611 |
{ |
{ |
3612 |
lt_dlhandle handle, newhandle; |
if (!handle) |
3613 |
const char *basename, *ext; |
{ |
3614 |
const char *saved_error = last_error; |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); |
3615 |
char *dir = 0, *name = 0; |
return 0; |
3616 |
|
} |
3617 |
if (!filename) { |
|
3618 |
handle = (lt_dlhandle) lt_dlmalloc(sizeof(lt_dlhandle_t)); |
return &(handle->info); |
|
if (!handle) { |
|
|
last_error = memory_error; |
|
|
return 0; |
|
|
} |
|
|
handle->usage = 0; |
|
|
handle->depcount = 0; |
|
|
handle->deplibs = 0; |
|
|
newhandle = handle; |
|
|
if (tryall_dlopen(&newhandle, 0) != 0) { |
|
|
lt_dlfree(handle); |
|
|
return 0; |
|
|
} |
|
|
goto register_handle; |
|
|
} |
|
|
basename = strrchr(filename, '/'); |
|
|
if (basename) { |
|
|
basename++; |
|
|
dir = (char*) lt_dlmalloc(basename - filename + 1); |
|
|
if (!dir) { |
|
|
last_error = memory_error; |
|
|
return 0; |
|
|
} |
|
|
strncpy(dir, filename, basename - filename); |
|
|
dir[basename - filename] = '\0'; |
|
|
} else |
|
|
basename = filename; |
|
|
/* check whether we open a libtool module (.la extension) */ |
|
|
ext = strrchr(basename, '.'); |
|
|
if (ext && strcmp(ext, ".la") == 0) { |
|
|
/* this seems to be a libtool module */ |
|
|
FILE *file; |
|
|
int i; |
|
|
char *dlname = 0, *old_name = 0; |
|
|
char *libdir = 0, *deplibs = 0; |
|
|
char *line; |
|
|
int error = 0; |
|
|
/* if we can't find the installed flag, it is probably an |
|
|
installed libtool archive, produced with an old version |
|
|
of libtool */ |
|
|
int installed = 1; |
|
|
|
|
|
/* extract the module name from the file name */ |
|
|
name = (char*) lt_dlmalloc(ext - basename + 1); |
|
|
if (!name) { |
|
|
last_error = memory_error; |
|
|
if (dir) |
|
|
lt_dlfree(dir); |
|
|
return 0; |
|
|
} |
|
|
/* canonicalize the module name */ |
|
|
for (i = 0; i < ext - basename; i++) |
|
|
if (isalnum((int)(basename[i]))) |
|
|
name[i] = basename[i]; |
|
|
else |
|
|
name[i] = '_'; |
|
|
name[ext - basename] = '\0'; |
|
|
/* now try to open the .la file */ |
|
|
file = fopen(filename, LTDL_READTEXT_MODE); |
|
|
if (!file) |
|
|
last_error = file_not_found_error; |
|
|
if (!file && !dir) { |
|
|
/* try other directories */ |
|
|
file = (FILE*) find_file(basename, |
|
|
user_search_path, |
|
|
&dir, 0); |
|
|
if (!file) |
|
|
file = (FILE*) find_file(basename, |
|
|
getenv("LTDL_LIBRARY_PATH"), |
|
|
&dir, 0); |
|
|
#ifdef LTDL_SHLIBPATH_VAR |
|
|
if (!file) |
|
|
file = (FILE*) find_file(basename, |
|
|
getenv(LTDL_SHLIBPATH_VAR), |
|
|
&dir, 0); |
|
|
#endif |
|
|
} |
|
|
if (!file) { |
|
|
if (name) |
|
|
lt_dlfree(name); |
|
|
if (dir) |
|
|
lt_dlfree(dir); |
|
|
return 0; |
|
|
} |
|
|
line = (char*) lt_dlmalloc(LTDL_FILENAME_MAX); |
|
|
if (!line) { |
|
|
fclose(file); |
|
|
last_error = memory_error; |
|
|
return 0; |
|
|
} |
|
|
/* read the .la file */ |
|
|
while (!feof(file)) { |
|
|
if (!fgets(line, LTDL_FILENAME_MAX, file)) |
|
|
break; |
|
|
if (line[0] == '\n' || line[0] == '#') |
|
|
continue; |
|
|
# undef STR_DLNAME |
|
|
# define STR_DLNAME "dlname=" |
|
|
if (strncmp(line, STR_DLNAME, |
|
|
sizeof(STR_DLNAME) - 1) == 0) |
|
|
error = trim(&dlname, |
|
|
&line[sizeof(STR_DLNAME) - 1]); |
|
|
else |
|
|
# undef STR_OLD_LIBRARY |
|
|
# define STR_OLD_LIBRARY "old_library=" |
|
|
if (strncmp(line, STR_OLD_LIBRARY, |
|
|
sizeof(STR_OLD_LIBRARY) - 1) == 0) |
|
|
error = trim(&old_name, |
|
|
&line[sizeof(STR_OLD_LIBRARY) - 1]); |
|
|
else |
|
|
# undef STR_LIBDIR |
|
|
# define STR_LIBDIR "libdir=" |
|
|
if (strncmp(line, STR_LIBDIR, |
|
|
sizeof(STR_LIBDIR) - 1) == 0) |
|
|
error = trim(&libdir, |
|
|
&line[sizeof(STR_LIBDIR) - 1]); |
|
|
else |
|
|
# undef STR_DL_DEPLIBS |
|
|
# define STR_DL_DEPLIBS "dl_dependency_libs=" |
|
|
if (strncmp(line, STR_DL_DEPLIBS, |
|
|
sizeof(STR_DL_DEPLIBS) - 1) == 0) |
|
|
error = trim(&deplibs, |
|
|
&line[sizeof(STR_DL_DEPLIBS) - 1]); |
|
|
else |
|
|
if (strcmp(line, "installed=yes\n") == 0) |
|
|
installed = 1; |
|
|
else |
|
|
if (strcmp(line, "installed=no\n") == 0) |
|
|
installed = 0; |
|
|
if (error) |
|
|
break; |
|
|
} |
|
|
fclose(file); |
|
|
lt_dlfree(line); |
|
|
/* allocate the handle */ |
|
|
handle = (lt_dlhandle) lt_dlmalloc(sizeof(lt_dlhandle_t)); |
|
|
if (!handle || error) { |
|
|
if (handle) |
|
|
lt_dlfree(handle); |
|
|
if (!error) |
|
|
last_error = memory_error; |
|
|
free_vars(name, dir, dlname, old_name, libdir, deplibs); |
|
|
return 0; |
|
|
} |
|
|
handle->usage = 0; |
|
|
if (load_deplibs(handle, deplibs) == 0) { |
|
|
newhandle = handle; |
|
|
/* find_module may replace newhandle */ |
|
|
if (find_module(&newhandle, dir, libdir, |
|
|
dlname, old_name, installed)) { |
|
|
unload_deplibs(handle); |
|
|
error = 1; |
|
|
} |
|
|
} else |
|
|
error = 1; |
|
|
if (error) { |
|
|
lt_dlfree(handle); |
|
|
free_vars(name, dir, dlname, old_name, libdir, deplibs); |
|
|
return 0; |
|
|
} |
|
|
if (handle != newhandle) { |
|
|
unload_deplibs(handle); |
|
|
} |
|
|
} else { |
|
|
/* not a libtool module */ |
|
|
handle = (lt_dlhandle) lt_dlmalloc(sizeof(lt_dlhandle_t)); |
|
|
if (!handle) { |
|
|
last_error = memory_error; |
|
|
if (dir) |
|
|
lt_dlfree(dir); |
|
|
return 0; |
|
|
} |
|
|
handle->usage = 0; |
|
|
/* non-libtool modules don't have dependencies */ |
|
|
handle->depcount = 0; |
|
|
handle->deplibs = 0; |
|
|
newhandle = handle; |
|
|
if (tryall_dlopen(&newhandle, filename) |
|
|
&& (dir |
|
|
|| (!find_file(basename, user_search_path, |
|
|
0, &newhandle) |
|
|
&& !find_file(basename, |
|
|
getenv("LTDL_LIBRARY_PATH"), |
|
|
0, &newhandle) |
|
|
#ifdef LTDL_SHLIBPATH_VAR |
|
|
&& !find_file(basename, |
|
|
getenv(LTDL_SHLIBPATH_VAR), |
|
|
0, &newhandle) |
|
|
#endif |
|
|
))) { |
|
|
lt_dlfree(handle); |
|
|
if (dir) |
|
|
lt_dlfree(dir); |
|
|
return 0; |
|
|
} |
|
|
} |
|
|
register_handle: |
|
|
if (newhandle != handle) { |
|
|
lt_dlfree(handle); |
|
|
handle = newhandle; |
|
|
} |
|
|
if (!handle->usage) { |
|
|
handle->usage = 1; |
|
|
handle->name = name; |
|
|
handle->next = handles; |
|
|
handles = handle; |
|
|
} else if (name) |
|
|
lt_dlfree(name); |
|
|
if (dir) |
|
|
lt_dlfree(dir); |
|
|
last_error = saved_error; |
|
|
return handle; |
|
3619 |
} |
} |
3620 |
|
|
3621 |
lt_dlhandle |
lt_dlhandle |
3622 |
lt_dlopenext (filename) |
scm_lt_dlhandle_next (place) |
3623 |
const char *filename; |
lt_dlhandle place; |
3624 |
{ |
{ |
3625 |
lt_dlhandle handle; |
return place ? place->next : handles; |
|
char *tmp; |
|
|
int len; |
|
|
const char *saved_error = last_error; |
|
|
|
|
|
if (!filename) |
|
|
return lt_dlopen(filename); |
|
|
len = strlen(filename); |
|
|
if (!len) { |
|
|
last_error = file_not_found_error; |
|
|
return 0; |
|
|
} |
|
|
/* try the normal file name */ |
|
|
handle = lt_dlopen(filename); |
|
|
if (handle) |
|
|
return handle; |
|
|
/* try "filename.la" */ |
|
|
tmp = (char*) lt_dlmalloc(len+4); |
|
|
if (!tmp) { |
|
|
last_error = memory_error; |
|
|
return 0; |
|
|
} |
|
|
strcpy(tmp, filename); |
|
|
strcat(tmp, ".la"); |
|
|
handle = lt_dlopen(tmp); |
|
|
if (handle) { |
|
|
last_error = saved_error; |
|
|
lt_dlfree(tmp); |
|
|
return handle; |
|
|
} |
|
|
#ifdef LTDL_SHLIB_EXT |
|
|
/* try "filename.EXT" */ |
|
|
if (strlen(shlib_ext) > 3) { |
|
|
lt_dlfree(tmp); |
|
|
tmp = (char*) lt_dlmalloc(len + strlen(shlib_ext) + 1); |
|
|
if (!tmp) { |
|
|
last_error = memory_error; |
|
|
return 0; |
|
|
} |
|
|
strcpy(tmp, filename); |
|
|
} else |
|
|
tmp[len] = '\0'; |
|
|
strcat(tmp, shlib_ext); |
|
|
handle = lt_dlopen(tmp); |
|
|
if (handle) { |
|
|
last_error = saved_error; |
|
|
lt_dlfree(tmp); |
|
|
return handle; |
|
|
} |
|
|
#endif |
|
|
last_error = file_not_found_error; |
|
|
lt_dlfree(tmp); |
|
|
return 0; |
|
3626 |
} |
} |
3627 |
|
|
3628 |
int |
int |
3629 |
lt_dlclose (handle) |
scm_lt_dlforeach (func, data) |
3630 |
lt_dlhandle handle; |
int (*func) LT_PARAMS((lt_dlhandle handle, lt_ptr data)); |
3631 |
|
lt_ptr data; |
3632 |
{ |
{ |
3633 |
lt_dlhandle cur, last; |
int errors = 0; |
3634 |
|
lt_dlhandle cur; |
3635 |
/* check whether the handle is valid */ |
|
3636 |
last = cur = handles; |
LT_DLMUTEX_LOCK (); |
3637 |
while (cur && handle != cur) { |
|
3638 |
last = cur; |
cur = handles; |
3639 |
cur = cur->next; |
while (cur) |
3640 |
} |
{ |
3641 |
if (!cur) { |
lt_dlhandle tmp = cur; |
3642 |
last_error = invalid_handle_error; |
|
3643 |
return 1; |
cur = cur->next; |
3644 |
} |
if ((*func) (tmp, data)) |
3645 |
handle->usage--; |
{ |
3646 |
if (!handle->usage) { |
++errors; |
3647 |
int error; |
break; |
|
|
|
|
if (handle != handles) |
|
|
last->next = handle->next; |
|
|
else |
|
|
handles = handle->next; |
|
|
error = handle->type->lib_close(handle); |
|
|
error += unload_deplibs(handle); |
|
|
if (handle->filename) |
|
|
lt_dlfree(handle->filename); |
|
|
if (handle->name) |
|
|
lt_dlfree(handle->name); |
|
|
lt_dlfree(handle); |
|
|
return error; |
|
3648 |
} |
} |
3649 |
return 0; |
} |
3650 |
|
|
3651 |
|
LT_DLMUTEX_UNLOCK (); |
3652 |
|
|
3653 |
|
return errors; |
3654 |
} |
} |
3655 |
|
|
3656 |
lt_ptr_t |
lt_dlcaller_id |
3657 |
lt_dlsym (handle, symbol) |
scm_lt_dlcaller_register () |
3658 |
lt_dlhandle handle; |
{ |
3659 |
const char *symbol; |
static lt_dlcaller_id last_caller_id = 0; |
3660 |
{ |
int result; |
3661 |
int lensym; |
|
3662 |
char lsym[LTDL_SYMBOL_LENGTH]; |
LT_DLMUTEX_LOCK (); |
3663 |
char *sym; |
result = ++last_caller_id; |
3664 |
lt_ptr_t address; |
LT_DLMUTEX_UNLOCK (); |
3665 |
|
|
3666 |
if (!handle) { |
return result; |
3667 |
last_error = invalid_handle_error; |
} |
3668 |
return 0; |
|
3669 |
} |
lt_ptr |
3670 |
if (!symbol) { |
scm_lt_dlcaller_set_data (key, handle, data) |
3671 |
last_error = symbol_error; |
lt_dlcaller_id key; |
3672 |
return 0; |
lt_dlhandle handle; |
3673 |
} |
lt_ptr data; |
3674 |
lensym = strlen(symbol); |
{ |
3675 |
if (handle->type->sym_prefix) |
int n_elements = 0; |
3676 |
lensym += strlen(handle->type->sym_prefix); |
lt_ptr stale = (lt_ptr) 0; |
3677 |
if (handle->name) |
int i; |
3678 |
lensym += strlen(handle->name); |
|
3679 |
if (lensym + LTDL_SYMBOL_OVERHEAD < LTDL_SYMBOL_LENGTH) |
/* This needs to be locked so that the caller data can be updated |
3680 |
sym = lsym; |
simultaneously by different threads. */ |
3681 |
else |
LT_DLMUTEX_LOCK (); |
3682 |
sym = (char*) lt_dlmalloc(lensym + LTDL_SYMBOL_OVERHEAD + 1); |
|
3683 |
if (!sym) { |
if (handle->caller_data) |
3684 |
last_error = buffer_overflow_error; |
while (handle->caller_data[n_elements].key) |
3685 |
return 0; |
++n_elements; |
3686 |
} |
|
3687 |
if (handle->name) { |
for (i = 0; i < n_elements; ++i) |
3688 |
const char *saved_error = last_error; |
{ |
3689 |
|
if (handle->caller_data[i].key == key) |
3690 |
/* this is a libtool module */ |
{ |
3691 |
if (handle->type->sym_prefix) { |
stale = handle->caller_data[i].data; |
3692 |
strcpy(sym, handle->type->sym_prefix); |
break; |
3693 |
strcat(sym, handle->name); |
} |
3694 |
} else |
} |
3695 |
strcpy(sym, handle->name); |
|
3696 |
strcat(sym, "_LTX_"); |
/* Ensure that there is enough room in this handle's caller_data |
3697 |
strcat(sym, symbol); |
array to accept a new element (and an empty end marker). */ |
3698 |
/* try "modulename_LTX_symbol" */ |
if (i == n_elements) |
3699 |
address = handle->type->find_sym(handle, sym); |
{ |
3700 |
if (address) { |
lt_caller_data *temp |
3701 |
if (sym != lsym) |
= LT_DLREALLOC (lt_caller_data, handle->caller_data, 2+ n_elements); |
3702 |
lt_dlfree(sym); |
|
3703 |
return address; |
if (!temp) |
3704 |
} |
{ |
3705 |
last_error = saved_error; |
stale = 0; |
3706 |
|
goto done; |
3707 |
} |
} |
3708 |
/* otherwise try "symbol" */ |
|
3709 |
if (handle->type->sym_prefix) { |
handle->caller_data = temp; |
3710 |
strcpy(sym, handle->type->sym_prefix); |
|
3711 |
strcat(sym, symbol); |
/* We only need this if we needed to allocate a new caller_data. */ |
3712 |
} else |
handle->caller_data[i].key = key; |
3713 |
strcpy(sym, symbol); |
handle->caller_data[1+ i].key = 0; |
3714 |
address = handle->type->find_sym(handle, sym); |
} |
3715 |
if (sym != lsym) |
|
3716 |
lt_dlfree(sym); |
handle->caller_data[i].data = data; |
3717 |
return address; |
|
3718 |
|
done: |
3719 |
|
LT_DLMUTEX_UNLOCK (); |
3720 |
|
|
3721 |
|
return stale; |
3722 |
} |
} |
3723 |
|
|
3724 |
const char * |
lt_ptr |
3725 |
lt_dlerror LTDL_PARAMS((void)) |
scm_lt_dlcaller_get_data (key, handle) |
3726 |
|
lt_dlcaller_id key; |
3727 |
|
lt_dlhandle handle; |
3728 |
{ |
{ |
3729 |
const char *error = last_error; |
lt_ptr result = (lt_ptr) 0; |
3730 |
|
|
3731 |
last_error = 0; |
/* This needs to be locked so that the caller data isn't updated by |
3732 |
return error; |
another thread part way through this function. */ |
3733 |
|
LT_DLMUTEX_LOCK (); |
3734 |
|
|
3735 |
|
/* Locate the index of the element with a matching KEY. */ |
3736 |
|
{ |
3737 |
|
int i; |
3738 |
|
for (i = 0; handle->caller_data[i].key; ++i) |
3739 |
|
{ |
3740 |
|
if (handle->caller_data[i].key == key) |
3741 |
|
{ |
3742 |
|
result = handle->caller_data[i].data; |
3743 |
|
break; |
3744 |
|
} |
3745 |
|
} |
3746 |
|
} |
3747 |
|
|
3748 |
|
LT_DLMUTEX_UNLOCK (); |
3749 |
|
|
3750 |
|
return result; |
3751 |
} |
} |
3752 |
|
|
3753 |
|
|
3754 |
|
|
3755 |
|
/* --- USER MODULE LOADER API --- */ |
3756 |
|
|
3757 |
|
|
3758 |
int |
int |
3759 |
lt_dladdsearchdir (search_dir) |
scm_lt_dlloader_add (place, dlloader, loader_name) |
3760 |
const char *search_dir; |
lt_dlloader *place; |
3761 |
{ |
const struct lt_user_dlloader *dlloader; |
3762 |
if (!search_dir || !strlen(search_dir)) |
const char *loader_name; |
3763 |
return 0; |
{ |
3764 |
if (!user_search_path) { |
int errors = 0; |
3765 |
user_search_path = strdup(search_dir); |
lt_dlloader *node = 0, *ptr = 0; |
3766 |
if (!user_search_path) { |
|
3767 |
last_error = memory_error; |
if ((dlloader == 0) /* diagnose null parameters */ |
3768 |
return 1; |
|| (dlloader->module_open == 0) |
3769 |
} |
|| (dlloader->module_close == 0) |
3770 |
} else { |
|| (dlloader->find_sym == 0)) |
3771 |
char *new_search_path = (char*) |
{ |
3772 |
lt_dlmalloc(strlen(user_search_path) + |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); |
3773 |
strlen(search_dir) + 2); /* ':' + '\0' == 2 */ |
return 1; |
3774 |
if (!new_search_path) { |
} |
3775 |
last_error = memory_error; |
|
3776 |
return 1; |
/* Create a new dlloader node with copies of the user callbacks. */ |
3777 |
} |
node = LT_EMALLOC (lt_dlloader, 1); |
3778 |
strcpy(new_search_path, user_search_path); |
if (!node) |
3779 |
strcat(new_search_path, ":"); |
return 1; |
3780 |
strcat(new_search_path, search_dir); |
|
3781 |
lt_dlfree(user_search_path); |
node->next = 0; |
3782 |
user_search_path = new_search_path; |
node->loader_name = loader_name; |
3783 |
|
node->sym_prefix = dlloader->sym_prefix; |
3784 |
|
node->dlloader_exit = dlloader->dlloader_exit; |
3785 |
|
node->module_open = dlloader->module_open; |
3786 |
|
node->module_close = dlloader->module_close; |
3787 |
|
node->find_sym = dlloader->find_sym; |
3788 |
|
node->dlloader_data = dlloader->dlloader_data; |
3789 |
|
|
3790 |
|
LT_DLMUTEX_LOCK (); |
3791 |
|
if (!loaders) |
3792 |
|
{ |
3793 |
|
/* If there are no loaders, NODE becomes the list! */ |
3794 |
|
loaders = node; |
3795 |
|
} |
3796 |
|
else if (!place) |
3797 |
|
{ |
3798 |
|
/* If PLACE is not set, add NODE to the end of the |
3799 |
|
LOADERS list. */ |
3800 |
|
for (ptr = loaders; ptr->next; ptr = ptr->next) |
3801 |
|
{ |
3802 |
|
/*NOWORK*/; |
3803 |
|
} |
3804 |
|
|
3805 |
|
ptr->next = node; |
3806 |
|
} |
3807 |
|
else if (loaders == place) |
3808 |
|
{ |
3809 |
|
/* If PLACE is the first loader, NODE goes first. */ |
3810 |
|
node->next = place; |
3811 |
|
loaders = node; |
3812 |
|
} |
3813 |
|
else |
3814 |
|
{ |
3815 |
|
/* Find the node immediately preceding PLACE. */ |
3816 |
|
for (ptr = loaders; ptr->next != place; ptr = ptr->next) |
3817 |
|
{ |
3818 |
|
/*NOWORK*/; |
3819 |
|
} |
3820 |
|
|
3821 |
|
if (ptr->next != place) |
3822 |
|
{ |
3823 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); |
3824 |
|
++errors; |
3825 |
|
} |
3826 |
|
else |
3827 |
|
{ |
3828 |
|
/* Insert NODE between PTR and PLACE. */ |
3829 |
|
node->next = place; |
3830 |
|
ptr->next = node; |
3831 |
} |
} |
3832 |
return 0; |
} |
3833 |
|
|
3834 |
|
LT_DLMUTEX_UNLOCK (); |
3835 |
|
|
3836 |
|
return errors; |
3837 |
} |
} |
3838 |
|
|
3839 |
int |
int |
3840 |
lt_dlsetsearchpath (search_path) |
scm_lt_dlloader_remove (loader_name) |
3841 |
const char *search_path; |
const char *loader_name; |
3842 |
{ |
{ |
3843 |
if (user_search_path) |
lt_dlloader *place = scm_lt_dlloader_find (loader_name); |
3844 |
lt_dlfree(user_search_path); |
lt_dlhandle handle; |
3845 |
user_search_path = 0; /* reset the search path */ |
int errors = 0; |
3846 |
if (!search_path || !strlen(search_path)) |
|
3847 |
return 0; |
if (!place) |
3848 |
user_search_path = strdup(search_path); |
{ |
3849 |
if (!user_search_path) |
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); |
3850 |
return 1; |
return 1; |
3851 |
return 0; |
} |
3852 |
|
|
3853 |
|
LT_DLMUTEX_LOCK (); |
3854 |
|
|
3855 |
|
/* Fail if there are any open modules which use this loader. */ |
3856 |
|
for (handle = handles; handle; handle = handle->next) |
3857 |
|
{ |
3858 |
|
if (handle->loader == place) |
3859 |
|
{ |
3860 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (REMOVE_LOADER)); |
3861 |
|
++errors; |
3862 |
|
goto done; |
3863 |
|
} |
3864 |
|
} |
3865 |
|
|
3866 |
|
if (place == loaders) |
3867 |
|
{ |
3868 |
|
/* PLACE is the first loader in the list. */ |
3869 |
|
loaders = loaders->next; |
3870 |
|
} |
3871 |
|
else |
3872 |
|
{ |
3873 |
|
/* Find the loader before the one being removed. */ |
3874 |
|
lt_dlloader *prev; |
3875 |
|
for (prev = loaders; prev->next; prev = prev->next) |
3876 |
|
{ |
3877 |
|
if (!strcmp (prev->next->loader_name, loader_name)) |
3878 |
|
{ |
3879 |
|
break; |
3880 |
|
} |
3881 |
|
} |
3882 |
|
|
3883 |
|
place = prev->next; |
3884 |
|
prev->next = prev->next->next; |
3885 |
|
} |
3886 |
|
|
3887 |
|
if (place->dlloader_exit) |
3888 |
|
{ |
3889 |
|
errors = place->dlloader_exit (place->dlloader_data); |
3890 |
|
} |
3891 |
|
|
3892 |
|
LT_DLFREE (place); |
3893 |
|
|
3894 |
|
done: |
3895 |
|
LT_DLMUTEX_UNLOCK (); |
3896 |
|
|
3897 |
|
return errors; |
3898 |
|
} |
3899 |
|
|
3900 |
|
lt_dlloader * |
3901 |
|
scm_lt_dlloader_next (place) |
3902 |
|
lt_dlloader *place; |
3903 |
|
{ |
3904 |
|
lt_dlloader *next; |
3905 |
|
|
3906 |
|
LT_DLMUTEX_LOCK (); |
3907 |
|
next = place ? place->next : loaders; |
3908 |
|
LT_DLMUTEX_UNLOCK (); |
3909 |
|
|
3910 |
|
return next; |
3911 |
} |
} |
3912 |
|
|
3913 |
const char * |
const char * |
3914 |
lt_dlgetsearchpath LTDL_PARAMS((void)) |
scm_lt_dlloader_name (place) |
3915 |
|
lt_dlloader *place; |
3916 |
{ |
{ |
3917 |
return user_search_path; |
const char *name = 0; |
3918 |
|
|
3919 |
|
if (place) |
3920 |
|
{ |
3921 |
|
LT_DLMUTEX_LOCK (); |
3922 |
|
name = place ? place->loader_name : 0; |
3923 |
|
LT_DLMUTEX_UNLOCK (); |
3924 |
|
} |
3925 |
|
else |
3926 |
|
{ |
3927 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); |
3928 |
|
} |
3929 |
|
|
3930 |
|
return name; |
3931 |
|
} |
3932 |
|
|
3933 |
|
lt_user_data * |
3934 |
|
scm_lt_dlloader_data (place) |
3935 |
|
lt_dlloader *place; |
3936 |
|
{ |
3937 |
|
lt_user_data *data = 0; |
3938 |
|
|
3939 |
|
if (place) |
3940 |
|
{ |
3941 |
|
LT_DLMUTEX_LOCK (); |
3942 |
|
data = place ? &(place->dlloader_data) : 0; |
3943 |
|
LT_DLMUTEX_UNLOCK (); |
3944 |
|
} |
3945 |
|
else |
3946 |
|
{ |
3947 |
|
LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); |
3948 |
|
} |
3949 |
|
|
3950 |
|
return data; |
3951 |
|
} |
3952 |
|
|
3953 |
|
lt_dlloader * |
3954 |
|
scm_lt_dlloader_find (loader_name) |
3955 |
|
const char *loader_name; |
3956 |
|
{ |
3957 |
|
lt_dlloader *place = 0; |
3958 |
|
|
3959 |
|
LT_DLMUTEX_LOCK (); |
3960 |
|
for (place = loaders; place; place = place->next) |
3961 |
|
{ |
3962 |
|
if (strcmp (place->loader_name, loader_name) == 0) |
3963 |
|
{ |
3964 |
|
break; |
3965 |
|
} |
3966 |
|
} |
3967 |
|
LT_DLMUTEX_UNLOCK (); |
3968 |
|
|
3969 |
|
return place; |
3970 |
} |
} |