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1diff -up scim-1.4.8/src/ltdl.cpp.fix-dlopen scim-1.4.8/src/ltdl.cpp
2--- scim-1.4.8/src/ltdl.cpp.fix-dlopen 2008-11-02 14:42:40.000000000 +0800
3+++ scim-1.4.8/src/ltdl.cpp 2009-03-25 15:12:45.733010053 +0800
4@@ -1,4414 +0,0 @@
5-/* ltdl.c -- system independent dlopen wrapper
6- Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
7- Originally by Thomas Tanner <tanner@ffii.org>
8- This file is part of GNU Libtool.
9-
10-This library is free software; you can redistribute it and/or
11-modify it under the terms of the GNU Lesser General Public
12-License as published by the Free Software Foundation; either
13-version 2 of the License, or (at your option) any later version.
14-
15-As a special exception to the GNU Lesser General Public License,
16-if you distribute this file as part of a program or library that
17-is built using GNU libtool, you may include it under the same
18-distribution terms that you use for the rest of that program.
19-
20-This library is distributed in the hope that it will be useful,
21-but WITHOUT ANY WARRANTY; without even the implied warranty of
22-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23-Lesser General Public License for more details.
24-
25-You should have received a copy of the GNU Lesser General Public
26-License along with this library; if not, write to the Free Software
27-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
28-02111-1307 USA
29-
30-*/
31-
32-#if HAVE_CONFIG_H
33-# include <config.h>
34-#endif
35-
36-#if HAVE_UNISTD_H
37-# include <unistd.h>
38-#endif
39-
40-#if HAVE_STDIO_H
41-# include <stdio.h>
42-#endif
43-
44-/* Include the header defining malloc. On K&R C compilers,
45- that's <malloc.h>, on ANSI C and ISO C compilers, that's <stdlib.h>. */
46-#if HAVE_STDLIB_H
47-# include <stdlib.h>
48-#else
49-# if HAVE_MALLOC_H
50-# include <malloc.h>
51-# endif
52-#endif
53-
54-#if HAVE_STRING_H
55-# include <string.h>
56-#else
57-# if HAVE_STRINGS_H
58-# include <strings.h>
59-# endif
60-#endif
61-
62-#if HAVE_CTYPE_H
63-# include <ctype.h>
64-#endif
65-
66-#if HAVE_MEMORY_H
67-# include <memory.h>
68-#endif
69-
70-#if HAVE_ERRNO_H
71-# include <errno.h>
72-#endif
73-
74-
75-#ifndef __WINDOWS__
76-# ifdef __WIN32__
77-# define __WINDOWS__
78-# endif
79-#endif
80-
81-
82-#undef LT_USE_POSIX_DIRENT
83-#ifdef HAVE_CLOSEDIR
84-# ifdef HAVE_OPENDIR
85-# ifdef HAVE_READDIR
86-# ifdef HAVE_DIRENT_H
87-# define LT_USE_POSIX_DIRENT
88-# endif /* HAVE_DIRENT_H */
89-# endif /* HAVE_READDIR */
90-# endif /* HAVE_OPENDIR */
91-#endif /* HAVE_CLOSEDIR */
92-
93-
94-#undef LT_USE_WINDOWS_DIRENT_EMULATION
95-#ifndef LT_USE_POSIX_DIRENT
96-# ifdef __WINDOWS__
97-# define LT_USE_WINDOWS_DIRENT_EMULATION
98-# endif /* __WINDOWS__ */
99-#endif /* LT_USE_POSIX_DIRENT */
100-
101-
102-#ifdef LT_USE_POSIX_DIRENT
103-# include <dirent.h>
104-# define LT_D_NAMLEN(dirent) (strlen((dirent)->d_name))
105-#else
106-# ifdef LT_USE_WINDOWS_DIRENT_EMULATION
107-# define LT_D_NAMLEN(dirent) (strlen((dirent)->d_name))
108-# else
109-# define dirent direct
110-# define LT_D_NAMLEN(dirent) ((dirent)->d_namlen)
111-# if HAVE_SYS_NDIR_H
112-# include <sys/ndir.h>
113-# endif
114-# if HAVE_SYS_DIR_H
115-# include <sys/dir.h>
116-# endif
117-# if HAVE_NDIR_H
118-# include <ndir.h>
119-# endif
120-# endif
121-#endif
122-
123-#if HAVE_ARGZ_H
124-# include <argz.h>
125-#endif
126-
127-#if HAVE_ASSERT_H
128-# include <assert.h>
129-#else
130-# define assert(arg) ((void) 0)
131-#endif
132-
133-#include "ltdl.h"
134-
135-#if WITH_DMALLOC
136-# include <dmalloc.h>
137-#endif
138-
139-
140-
141-\f
142-/* --- WINDOWS SUPPORT --- */
143-
144-
145-#ifdef DLL_EXPORT
146-# define LT_GLOBAL_DATA __declspec(dllexport)
147-#else
148-# define LT_GLOBAL_DATA
149-#endif
150-
151-/* fopen() mode flags for reading a text file */
152-#undef LT_READTEXT_MODE
153-#ifdef __WINDOWS__
154-# define LT_READTEXT_MODE "rt"
155-#else
156-# define LT_READTEXT_MODE "r"
157-#endif
158-
159-#ifdef LT_USE_WINDOWS_DIRENT_EMULATION
160-
161-#include <windows.h>
162-
163-#define dirent lt_dirent
164-#define DIR lt_DIR
165-
166-struct dirent
167-{
168- char d_name[2048];
169- int d_namlen;
170-};
171-
172-typedef struct _DIR
173-{
174- HANDLE hSearch;
175- WIN32_FIND_DATA Win32FindData;
176- BOOL firsttime;
177- struct dirent file_info;
178-} DIR;
179-
180-#endif /* LT_USE_WINDOWS_DIRENT_EMULATION */
181-
182-namespace scim {
183-
184-\f
185-/* --- MANIFEST CONSTANTS --- */
186-
187-
188-/* Standard libltdl search path environment variable name */
189-#undef LTDL_SEARCHPATH_VAR
190-#define LTDL_SEARCHPATH_VAR "LTDL_LIBRARY_PATH"
191-
192-/* Standard libtool archive file extension. */
193-#undef LTDL_ARCHIVE_EXT
194-#define LTDL_ARCHIVE_EXT ".la"
195-
196-/* max. filename length */
197-#ifndef LT_FILENAME_MAX
198-# define LT_FILENAME_MAX 1024
199-#endif
200-
201-/* This is the maximum symbol size that won't require malloc/free */
202-#undef LT_SYMBOL_LENGTH
203-#define LT_SYMBOL_LENGTH 128
204-
205-/* This accounts for the _LTX_ separator */
206-#undef LT_SYMBOL_OVERHEAD
207-#define LT_SYMBOL_OVERHEAD 5
208-
209-
210-
211-\f
212-/* --- MEMORY HANDLING --- */
213-
214-
215-/* These are the functions used internally. In addition to making
216- use of the associated function pointers above, they also perform
217- error handling. */
218-static char *lt_estrdup LT_PARAMS((const char *str));
219-static lt_ptr lt_emalloc LT_PARAMS((size_t size));
220-static lt_ptr lt_erealloc LT_PARAMS((lt_ptr addr, size_t size));
221-
222-/* static lt_ptr rpl_realloc LT_PARAMS((lt_ptr ptr, size_t size)); */
223-#define rpl_realloc realloc
224-
225-/* These are the pointers that can be changed by the caller: */
226-LT_GLOBAL_DATA lt_ptr (*lt_dlmalloc) LT_PARAMS((size_t size))
227- = (lt_ptr (*) LT_PARAMS((size_t))) malloc;
228-LT_GLOBAL_DATA lt_ptr (*lt_dlrealloc) LT_PARAMS((lt_ptr ptr, size_t size))
229- = (lt_ptr (*) LT_PARAMS((lt_ptr, size_t))) rpl_realloc;
230-LT_GLOBAL_DATA void (*lt_dlfree) LT_PARAMS((lt_ptr ptr))
231- = (void (*) LT_PARAMS((lt_ptr))) free;
232-
233-/* The following macros reduce the amount of typing needed to cast
234- assigned memory. */
235-#if WITH_DMALLOC
236-
237-#define LT_DLMALLOC(tp, n) ((tp *) xmalloc ((n) * sizeof(tp)))
238-#define LT_DLREALLOC(tp, p, n) ((tp *) xrealloc ((p), (n) * sizeof(tp)))
239-#define LT_DLFREE(p) \
240- LT_STMT_START { if (p) { xfree (p); (p) = 0; } } LT_STMT_END
241-
242-#define LT_EMALLOC(tp, n) ((tp *) xmalloc ((n) * sizeof(tp)))
243-#define LT_EREALLOC(tp, p, n) ((tp *) xrealloc ((p), (n) * sizeof(tp)))
244-
245-#else
246-
247-#define LT_DLMALLOC(tp, n) ((tp *) lt_dlmalloc ((n) * sizeof(tp)))
248-#define LT_DLREALLOC(tp, p, n) ((tp *) lt_dlrealloc ((p), (n) * sizeof(tp)))
249-#define LT_DLFREE(p) \
250- LT_STMT_START { if (p) { lt_dlfree (p); (p) = 0; } } LT_STMT_END
251-
252-#define LT_EMALLOC(tp, n) ((tp *) lt_emalloc ((n) * sizeof(tp)))
253-#define LT_EREALLOC(tp, p, n) ((tp *) lt_erealloc ((p), (n) * sizeof(tp)))
254-
255-#endif
256-
257-#define LT_DLMEM_REASSIGN(p, q) LT_STMT_START { \
258- if ((p) != (q)) { if (p) lt_dlfree (p); (p) = (q); (q) = 0; } \
259- } LT_STMT_END
260-
261-\f
262-/* --- REPLACEMENT FUNCTIONS --- */
263-
264-
265-#undef strdup
266-#define strdup rpl_strdup
267-
268-static char *strdup LT_PARAMS((const char *str));
269-
270-static char *
271-strdup(const char *str)
272-{
273- char *tmp = 0;
274-
275- if (str)
276- {
277- tmp = LT_DLMALLOC (char, 1+ strlen (str));
278- if (tmp)
279- {
280- strcpy(tmp, str);
281- }
282- }
283-
284- return tmp;
285-}
286-
287-
288-#if ! HAVE_STRCMP
289-
290-#undef strcmp
291-#define strcmp rpl_strcmp
292-
293-static int strcmp LT_PARAMS((const char *str1, const char *str2));
294-
295-static int
296-strcmp (const char *str1, const char *str2)
297-{
298- if (str1 == str2)
299- return 0;
300- if (str1 == 0)
301- return -1;
302- if (str2 == 0)
303- return 1;
304-
305- for (;*str1 && *str2; ++str1, ++str2)
306- {
307- if (*str1 != *str2)
308- break;
309- }
310-
311- return (int)(*str1 - *str2);
312-}
313-#endif
314-
315-
316-#if ! HAVE_STRCHR
317-
318-# if HAVE_INDEX
319-# define strchr index
320-# else
321-# define strchr rpl_strchr
322-
323-static const char *strchr LT_PARAMS((const char *str, int ch));
324-
325-static const char*
326-strchr(const char *str, int ch)
327-{
328- const char *p;
329-
330- for (p = str; *p != (char)ch && *p != LT_EOS_CHAR; ++p)
331- /*NOWORK*/;
332-
333- return (*p == (char)ch) ? p : 0;
334-}
335-
336-# endif
337-#endif /* !HAVE_STRCHR */
338-
339-
340-#if ! HAVE_STRRCHR
341-
342-# if HAVE_RINDEX
343-# define strrchr rindex
344-# else
345-# define strrchr rpl_strrchr
346-
347-static const char *strrchr LT_PARAMS((const char *str, int ch));
348-
349-static const char*
350-strrchr(const char *str, int ch)
351-{
352- const char *p, *q = 0;
353-
354- for (p = str; *p != LT_EOS_CHAR; ++p)
355- {
356- if (*p == (char) ch)
357- {
358- q = p;
359- }
360- }
361-
362- return q;
363-}
364-
365-# endif
366-#endif
367-
368-/* NOTE: Neither bcopy nor the memcpy implementation below can
369- reliably handle copying in overlapping areas of memory. Use
370- memmove (for which there is a fallback implmentation below)
371- if you need that behaviour. */
372-#if ! HAVE_MEMCPY
373-
374-# if HAVE_BCOPY
375-# define memcpy(dest, src, size) bcopy (src, dest, size)
376-# else
377-# define memcpy rpl_memcpy
378-
379-static lt_ptr memcpy LT_PARAMS((lt_ptr dest, const lt_ptr src, size_t size));
380-
381-static lt_ptr
382-memcpy (lt_ptr dest, const lt_ptr src, size_t size)
383-{
384- size_t i = 0;
385-
386- for (i = 0; i < size; ++i)
387- {
388- dest[i] = src[i];
389- }
390-
391- return dest;
392-}
393-
394-# endif /* !HAVE_BCOPY */
395-#endif /* !HAVE_MEMCPY */
396-
397-#if ! HAVE_MEMMOVE
398-# define memmove rpl_memmove
399-
400-static lt_ptr memmove LT_PARAMS((lt_ptr dest, const lt_ptr src, size_t size));
401-
402-static lt_ptr
403-memmove (lt_ptr dest, const lt_ptr src, size_t size)
404-{
405- size_t i;
406-
407- if (dest < src)
408- for (i = 0; i < size; ++i)
409- {
410- dest[i] = src[i];
411- }
412- else if (dest > src)
413- for (i = size -1; i >= 0; --i)
414- {
415- dest[i] = src[i];
416- }
417-
418- return dest;
419-}
420-
421-#endif /* !HAVE_MEMMOVE */
422-
423-#ifdef LT_USE_WINDOWS_DIRENT_EMULATION
424-
425-static void closedir LT_PARAMS((DIR *entry));
426-
427-static void
428-closedir(DIR *entry)
429-{
430- assert(entry != (DIR *) NULL);
431- FindClose(entry->hSearch);
432- lt_dlfree((lt_ptr)entry);
433-}
434-
435-
436-static DIR * opendir LT_PARAMS((const char *path));
437-
438-static DIR*
439-opendir (const char *path)
440-{
441- char file_specification[LT_FILENAME_MAX];
442- DIR *entry;
443-
444- assert(path != (char *) NULL);
445- (void) strncpy(file_specification,path,LT_FILENAME_MAX-1);
446- (void) strcat(file_specification,"\\");
447- entry = LT_DLMALLOC (DIR,sizeof(DIR));
448- if (entry != (DIR *) 0)
449- {
450- entry->firsttime = TRUE;
451- entry->hSearch = FindFirstFile(file_specification,&entry->Win32FindData);
452- }
453- if (entry->hSearch == INVALID_HANDLE_VALUE)
454- {
455- (void) strcat(file_specification,"\\*.*");
456- entry->hSearch = FindFirstFile(file_specification,&entry->Win32FindData);
457- if (entry->hSearch == INVALID_HANDLE_VALUE)
458- {
459- LT_DLFREE (entry);
460- return (DIR *) 0;
461- }
462- }
463- return(entry);
464-}
465-
466-
467-static struct dirent *readdir LT_PARAMS((DIR *entry));
468-
469-static struct dirent *readdir(DIR *entry)
470-{
471- int
472- status;
473-
474- if (entry == (DIR *) 0)
475- return((struct dirent *) 0);
476- if (!entry->firsttime)
477- {
478- status = FindNextFile(entry->hSearch,&entry->Win32FindData);
479- if (status == 0)
480- return((struct dirent *) 0);
481- }
482- entry->firsttime = FALSE;
483- (void) strncpy(entry->file_info.d_name,entry->Win32FindData.cFileName,
484- LT_FILENAME_MAX-1);
485- entry->file_info.d_namlen = strlen(entry->file_info.d_name);
486- return(&entry->file_info);
487-}
488-
489-#endif /* LT_USE_WINDOWS_DIRENT_EMULATION */
490-
491-/* According to Alexandre Oliva <oliva@lsd.ic.unicamp.br>,
492- ``realloc is not entirely portable''
493- In any case we want to use the allocator supplied by the user without
494- burdening them with an lt_dlrealloc function pointer to maintain.
495- Instead implement our own version (with known boundary conditions)
496- using lt_dlmalloc and lt_dlfree. */
497-
498-/* #undef realloc
499- #define realloc rpl_realloc
500-*/
501-#if 0
502- /* You can't (re)define realloc unless you also (re)define malloc.
503- Right now, this code uses the size of the *destination* to decide
504- how much to copy. That's not right, but you can't know the size
505- of the source unless you know enough about, or wrote malloc. So
506- this code is disabled... */
507-
508-static lt_ptr
509-realloc (ptr, size)
510- lt_ptr ptr;
511- size_t size;
512-{
513- if (size == 0)
514- {
515- /* For zero or less bytes, free the original memory */
516- if (ptr != 0)
517- {
518- lt_dlfree (ptr);
519- }
520-
521- return (lt_ptr) 0;
522- }
523- else if (ptr == 0)
524- {
525- /* Allow reallocation of a NULL pointer. */
526- return lt_dlmalloc (size);
527- }
528- else
529- {
530- /* Allocate a new block, copy and free the old block. */
531- lt_ptr mem = lt_dlmalloc (size);
532-
533- if (mem)
534- {
535- memcpy (mem, ptr, size);
536- lt_dlfree (ptr);
537- }
538-
539- /* Note that the contents of PTR are not damaged if there is
540- insufficient memory to realloc. */
541- return mem;
542- }
543-}
544-#endif
545-
546-
547-#if ! HAVE_ARGZ_APPEND
548-# define argz_append rpl_argz_append
549-
550-static error_t argz_append LT_PARAMS((char **pargz, size_t *pargz_len,
551- const char *buf, size_t buf_len));
552-
553-static error_t
554-argz_append (char **pargz, size_t *pargz_len, const char *buf, size_t buf_len)
555-{
556- size_t argz_len;
557- char *argz;
558-
559- assert (pargz);
560- assert (pargz_len);
561- assert ((*pargz && *pargz_len) || (!*pargz && !*pargz_len));
562-
563- /* If nothing needs to be appended, no more work is required. */
564- if (buf_len == 0)
565- return 0;
566-
567- /* Ensure there is enough room to append BUF_LEN. */
568- argz_len = *pargz_len + buf_len;
569- argz = LT_DLREALLOC (char, *pargz, argz_len);
570- if (!argz)
571- return ENOMEM;
572-
573- /* Copy characters from BUF after terminating '\0' in ARGZ. */
574- memcpy (argz + *pargz_len, buf, buf_len);
575-
576- /* Assign new values. */
577- *pargz = argz;
578- *pargz_len = argz_len;
579-
580- return 0;
581-}
582-#endif /* !HAVE_ARGZ_APPEND */
583-
584-
585-#if ! HAVE_ARGZ_CREATE_SEP
586-# define argz_create_sep rpl_argz_create_sep
587-
588-static error_t argz_create_sep LT_PARAMS((const char *str, int delim,
589- char **pargz, size_t *pargz_len));
590-
591-static error_t
592-argz_create_sep (const char *str, int delim, char **pargz, size_t *pargz_len)
593-{
594- size_t argz_len;
595- char *argz = 0;
596-
597- assert (str);
598- assert (pargz);
599- assert (pargz_len);
600-
601- /* Make a copy of STR, but replacing each occurence of
602- DELIM with '\0'. */
603- argz_len = 1+ LT_STRLEN (str);
604- if (argz_len)
605- {
606- const char *p;
607- char *q;
608-
609- argz = LT_DLMALLOC (char, argz_len);
610- if (!argz)
611- return ENOMEM;
612-
613- for (p = str, q = argz; *p != LT_EOS_CHAR; ++p)
614- {
615- if (*p == delim)
616- {
617- /* Ignore leading delimiters, and fold consecutive
618- delimiters in STR into a single '\0' in ARGZ. */
619- if ((q > argz) && (q[-1] != LT_EOS_CHAR))
620- *q++ = LT_EOS_CHAR;
621- else
622- --argz_len;
623- }
624- else
625- *q++ = *p;
626- }
627- /* Copy terminating LT_EOS_CHAR. */
628- *q = *p;
629- }
630-
631- /* If ARGZ_LEN has shrunk to nothing, release ARGZ's memory. */
632- if (!argz_len)
633- LT_DLFREE (argz);
634-
635- /* Assign new values. */
636- *pargz = argz;
637- *pargz_len = argz_len;
638-
639- return 0;
640-}
641-#endif /* !HAVE_ARGZ_CREATE_SEP */
642-
643-
644-#if ! HAVE_ARGZ_INSERT
645-# define argz_insert rpl_argz_insert
646-
647-static error_t argz_insert LT_PARAMS((char **pargz, size_t *pargz_len,
648- char *before, const char *entry));
649-
650-static error_t
651-argz_insert (char **pargz, size_t *pargz_len, char *before, const char *entry)
652-{
653- assert (pargz);
654- assert (pargz_len);
655- assert (entry && *entry);
656-
657- /* No BEFORE address indicates ENTRY should be inserted after the
658- current last element. */
659- if (!before)
660- return argz_append (pargz, pargz_len, entry, 1+ LT_STRLEN (entry));
661-
662- /* This probably indicates a programmer error, but to preserve
663- semantics, scan back to the start of an entry if BEFORE points
664- into the middle of it. */
665- while ((before > *pargz) && (before[-1] != LT_EOS_CHAR))
666- --before;
667-
668- {
669- size_t entry_len = 1+ LT_STRLEN (entry);
670- size_t argz_len = *pargz_len + entry_len;
671- size_t offset = before - *pargz;
672- char *argz = LT_DLREALLOC (char, *pargz, argz_len);
673-
674- if (!argz)
675- return ENOMEM;
676-
677- /* Make BEFORE point to the equivalent offset in ARGZ that it
678- used to have in *PARGZ incase realloc() moved the block. */
679- before = argz + offset;
680-
681- /* Move the ARGZ entries starting at BEFORE up into the new
682- space at the end -- making room to copy ENTRY into the
683- resulting gap. */
684- memmove (before + entry_len, before, *pargz_len - offset);
685- memcpy (before, entry, entry_len);
686-
687- /* Assign new values. */
688- *pargz = argz;
689- *pargz_len = argz_len;
690- }
691-
692- return 0;
693-}
694-#endif /* !HAVE_ARGZ_INSERT */
695-
696-
697-#if ! HAVE_ARGZ_NEXT
698-# define argz_next rpl_argz_next
699-
700-static char *argz_next LT_PARAMS((char *argz, size_t argz_len,
701- const char *entry));
702-
703-static char *
704-argz_next (char *argz, size_t argz_len, const char *entry)
705-{
706- assert ((argz && argz_len) || (!argz && !argz_len));
707-
708- if (entry)
709- {
710- /* Either ARGZ/ARGZ_LEN is empty, or ENTRY points into an address
711- within the ARGZ vector. */
712- assert ((!argz && !argz_len)
713- || ((argz <= entry) && (entry < (argz + argz_len))));
714-
715- /* Move to the char immediately after the terminating
716- '\0' of ENTRY. */
717- entry = 1+ strchr (entry, LT_EOS_CHAR);
718-
719- /* Return either the new ENTRY, or else NULL if ARGZ is
720- exhausted. */
721- return (entry >= argz + argz_len) ? 0 : (char *) entry;
722- }
723- else
724- {
725- /* This should probably be flagged as a programmer error,
726- since starting an argz_next loop with the iterator set
727- to ARGZ is safer. To preserve semantics, handle the NULL
728- case by returning the start of ARGZ (if any). */
729- if (argz_len > 0)
730- return argz;
731- else
732- return 0;
733- }
734-}
735-#endif /* !HAVE_ARGZ_NEXT */
736-
737-
738-
739-#if ! HAVE_ARGZ_STRINGIFY
740-# define argz_stringify rpl_argz_stringify
741-
742-static void argz_stringify LT_PARAMS((char *argz, size_t argz_len,
743- int sep));
744-
745-static void
746-argz_stringify (char *argz, size_t argz_len, int sep)
747-{
748- assert ((argz && argz_len) || (!argz && !argz_len));
749-
750- if (sep)
751- {
752- --argz_len; /* don't stringify the terminating EOS */
753- while (--argz_len > 0)
754- {
755- if (argz[argz_len] == LT_EOS_CHAR)
756- argz[argz_len] = sep;
757- }
758- }
759-}
760-#endif /* !HAVE_ARGZ_STRINGIFY */
761-
762-
763-
764-\f
765-/* --- TYPE DEFINITIONS -- */
766-
767-
768-/* This type is used for the array of caller data sets in each handler. */
769-typedef struct {
770- lt_dlcaller_id key;
771- lt_ptr data;
772-} lt_caller_data;
773-
774-
775-
776-\f
777-/* --- OPAQUE STRUCTURES DECLARED IN LTDL.H --- */
778-
779-
780-/* Extract the diagnostic strings from the error table macro in the same
781- order as the enumerated indices in ltdl.h. */
782-
783-static const char *lt_dlerror_strings[] =
784- {
785-#define LT_ERROR(name, diagnostic) (diagnostic),
786- lt_dlerror_table
787-#undef LT_ERROR
788-
789- 0
790- };
791-
792-/* This structure is used for the list of registered loaders. */
793-struct lt_dlloader {
794- struct lt_dlloader *next;
795- const char *loader_name; /* identifying name for each loader */
796- const char *sym_prefix; /* prefix for symbols */
797- lt_module_open *module_open;
798- lt_module_close *module_close;
799- lt_find_sym *find_sym;
800- lt_dlloader_exit *dlloader_exit;
801- lt_user_data dlloader_data;
802-};
803-
804-struct lt_dlhandle_struct {
805- struct lt_dlhandle_struct *next;
806- lt_dlloader *loader; /* dlopening interface */
807- lt_dlinfo info;
808- int depcount; /* number of dependencies */
809- lt_dlhandle *deplibs; /* dependencies */
810- lt_module module; /* system module handle */
811- lt_ptr system; /* system specific data */
812- lt_caller_data *caller_data; /* per caller associated data */
813- int flags; /* various boolean stats */
814-};
815-
816-/* Various boolean flags can be stored in the flags field of an
817- lt_dlhandle_struct... */
818-#define LT_DLGET_FLAG(handle, flag) (((handle)->flags & (flag)) == (flag))
819-#define LT_DLSET_FLAG(handle, flag) ((handle)->flags |= (flag))
820-
821-#define LT_DLRESIDENT_FLAG (0x01 << 0)
822-/* ...add more flags here... */
823-
824-#define LT_DLIS_RESIDENT(handle) LT_DLGET_FLAG(handle, LT_DLRESIDENT_FLAG)
825-
826-
827-#define LT_DLSTRERROR(name) lt_dlerror_strings[LT_CONC(LT_ERROR_,name)]
828-
829-static const char objdir[] = LTDL_OBJDIR;
830-static const char archive_ext[] = LTDL_ARCHIVE_EXT;
831-#ifdef LTDL_SHLIB_EXT
832-static const char shlib_ext[] = LTDL_SHLIB_EXT;
833-#endif
834-#ifdef LTDL_SYSSEARCHPATH
835-static const char sys_search_path[] = LTDL_SYSSEARCHPATH;
836-#endif
837-
838-
839-
840-\f
841-/* --- MUTEX LOCKING --- */
842-
843-
844-/* Macros to make it easier to run the lock functions only if they have
845- been registered. The reason for the complicated lock macro is to
846- ensure that the stored error message from the last error is not
847- accidentally erased if the current function doesn't generate an
848- error of its own. */
849-#define LT_DLMUTEX_LOCK() LT_STMT_START { \
850- if (lt_dlmutex_lock_func) (*lt_dlmutex_lock_func)(); \
851- } LT_STMT_END
852-#define LT_DLMUTEX_UNLOCK() LT_STMT_START { \
853- if (lt_dlmutex_unlock_func) (*lt_dlmutex_unlock_func)();\
854- } LT_STMT_END
855-#define LT_DLMUTEX_SETERROR(errormsg) LT_STMT_START { \
856- if (lt_dlmutex_seterror_func) \
857- (*lt_dlmutex_seterror_func) (errormsg); \
858- else lt_dllast_error = (errormsg); } LT_STMT_END
859-#define LT_DLMUTEX_GETERROR(errormsg) LT_STMT_START { \
860- if (lt_dlmutex_seterror_func) \
861- (errormsg) = (*lt_dlmutex_geterror_func) (); \
862- else (errormsg) = lt_dllast_error; } LT_STMT_END
863-
864-/* The mutex functions stored here are global, and are necessarily the
865- same for all threads that wish to share access to libltdl. */
866-static lt_dlmutex_lock *lt_dlmutex_lock_func = 0;
867-static lt_dlmutex_unlock *lt_dlmutex_unlock_func = 0;
868-static lt_dlmutex_seterror *lt_dlmutex_seterror_func = 0;
869-static lt_dlmutex_geterror *lt_dlmutex_geterror_func = 0;
870-static const char *lt_dllast_error = 0;
871-
872-
873-/* Either set or reset the mutex functions. Either all the arguments must
874- be valid functions, or else all can be NULL to turn off locking entirely.
875- The registered functions should be manipulating a static global lock
876- from the lock() and unlock() callbacks, which needs to be reentrant. */
877-int
878-lt_dlmutex_register (
879- lt_dlmutex_lock *lock,
880- lt_dlmutex_unlock *unlock,
881- lt_dlmutex_seterror *seterror,
882- lt_dlmutex_geterror *geterror)
883-{
884- lt_dlmutex_unlock *old_unlock = unlock;
885- int errors = 0;
886-
887- /* Lock using the old lock() callback, if any. */
888- LT_DLMUTEX_LOCK ();
889-
890- if ((lock && unlock && seterror && geterror)
891- || !(lock || unlock || seterror || geterror))
892- {
893- lt_dlmutex_lock_func = lock;
894- lt_dlmutex_unlock_func = unlock;
895- lt_dlmutex_geterror_func = geterror;
896- }
897- else
898- {
899- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_MUTEX_ARGS));
900- ++errors;
901- }
902-
903- /* Use the old unlock() callback we saved earlier, if any. Otherwise
904- record any errors using internal storage. */
905- if (old_unlock)
906- (*old_unlock) ();
907-
908- /* Return the number of errors encountered during the execution of
909- this function. */
910- return errors;
911-}
912-
913-
914-
915-\f
916-/* --- ERROR HANDLING --- */
917-
918-
919-static const char **user_error_strings = 0;
920-static int errorcount = LT_ERROR_MAX;
921-
922-int
923-lt_dladderror (const char *diagnostic)
924-{
925- int errindex = 0;
926- int result = -1;
927- const char **temp = (const char **) 0;
928-
929- assert (diagnostic);
930-
931- LT_DLMUTEX_LOCK ();
932-
933- errindex = errorcount - LT_ERROR_MAX;
934- temp = LT_EREALLOC (const char *, user_error_strings, 1 + errindex);
935- if (temp)
936- {
937- user_error_strings = temp;
938- user_error_strings[errindex] = diagnostic;
939- result = errorcount++;
940- }
941-
942- LT_DLMUTEX_UNLOCK ();
943-
944- return result;
945-}
946-
947-int
948-lt_dlseterror (int errindex)
949-{
950- int errors = 0;
951-
952- LT_DLMUTEX_LOCK ();
953-
954- if (errindex >= errorcount || errindex < 0)
955- {
956- /* Ack! Error setting the error message! */
957- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_ERRORCODE));
958- ++errors;
959- }
960- else if (errindex < LT_ERROR_MAX)
961- {
962- /* No error setting the error message! */
963- LT_DLMUTEX_SETERROR (lt_dlerror_strings[errindex]);
964- }
965- else
966- {
967- /* No error setting the error message! */
968- LT_DLMUTEX_SETERROR (user_error_strings[errindex - LT_ERROR_MAX]);
969- }
970-
971- LT_DLMUTEX_UNLOCK ();
972-
973- return errors;
974-}
975-
976-static lt_ptr
977-lt_emalloc (size_t size)
978-{
979- lt_ptr mem = lt_dlmalloc (size);
980- if (size && !mem)
981- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY));
982- return mem;
983-}
984-
985-static lt_ptr
986-lt_erealloc (lt_ptr addr, size_t size)
987-{
988- lt_ptr mem = lt_dlrealloc (addr, size);
989- if (size && !mem)
990- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY));
991- return mem;
992-}
993-
994-static char *
995-lt_estrdup (const char *str)
996-{
997- char *copy = strdup (str);
998- if (LT_STRLEN (str) && !copy)
999- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY));
1000- return copy;
1001-}
1002-
1003-
1004-
1005-\f
1006-/* --- DLOPEN() INTERFACE LOADER --- */
1007-
1008-
1009-#if HAVE_LIBDL
1010-
1011-/* dynamic linking with dlopen/dlsym */
1012-
1013-#if HAVE_DLFCN_H
1014-# include <dlfcn.h>
1015-#endif
1016-
1017-#if HAVE_SYS_DL_H
1018-# include <sys/dl.h>
1019-#endif
1020-
1021-#ifdef RTLD_GLOBAL
1022-# define LT_GLOBAL RTLD_GLOBAL
1023-#else
1024-# ifdef DL_GLOBAL
1025-# define LT_GLOBAL DL_GLOBAL
1026-# endif
1027-#endif /* !RTLD_GLOBAL */
1028-#ifndef LT_GLOBAL
1029-# define LT_GLOBAL 0
1030-#endif /* !LT_GLOBAL */
1031-
1032-/* We may have to define LT_LAZY_OR_NOW in the command line if we
1033- find out it does not work in some platform. */
1034-#ifndef LT_LAZY_OR_NOW
1035-# ifdef RTLD_LAZY
1036-# define LT_LAZY_OR_NOW RTLD_LAZY
1037-# else
1038-# ifdef DL_LAZY
1039-# define LT_LAZY_OR_NOW DL_LAZY
1040-# endif
1041-# endif /* !RTLD_LAZY */
1042-#endif
1043-#ifndef LT_LAZY_OR_NOW
1044-# ifdef RTLD_NOW
1045-# define LT_LAZY_OR_NOW RTLD_NOW
1046-# else
1047-# ifdef DL_NOW
1048-# define LT_LAZY_OR_NOW DL_NOW
1049-# endif
1050-# endif /* !RTLD_NOW */
1051-#endif
1052-#ifndef LT_LAZY_OR_NOW
1053-# define LT_LAZY_OR_NOW 0
1054-#endif /* !LT_LAZY_OR_NOW */
1055-
1056-#if HAVE_DLERROR
1057-# define DLERROR(arg) dlerror ()
1058-#else
1059-# define DLERROR(arg) LT_DLSTRERROR (arg)
1060-#endif
1061-
1062-static lt_module
1063-sys_dl_open (lt_user_data loader_data, const char *filename)
1064-{
1065- // XXX Need to investigate why .a files are asked to be open by this routine ???
1066- lt_module module = dlopen (filename, LT_GLOBAL | LT_LAZY_OR_NOW);
1067-
1068- if (!module)
1069- {
1070- LT_DLMUTEX_SETERROR (DLERROR (CANNOT_OPEN));
1071- }
1072-
1073- return module;
1074-}
1075-
1076-static int
1077-sys_dl_close (lt_user_data loader_data, lt_module module)
1078-{
1079- int errors = 0;
1080-
1081- if (dlclose (module) != 0)
1082- {
1083- LT_DLMUTEX_SETERROR (DLERROR (CANNOT_CLOSE));
1084- ++errors;
1085- }
1086-
1087- return errors;
1088-}
1089-
1090-static lt_ptr
1091-sys_dl_sym (
1092- lt_user_data loader_data,
1093- lt_module module,
1094- const char *symbol)
1095-{
1096- lt_ptr address = dlsym (module, symbol);
1097-
1098- if (!address)
1099- {
1100- LT_DLMUTEX_SETERROR (DLERROR (SYMBOL_NOT_FOUND));
1101- }
1102-
1103- return address;
1104-}
1105-
1106-static struct lt_user_dlloader sys_dl =
1107- {
1108-# ifdef NEED_USCORE
1109- "_",
1110-# else
1111- 0,
1112-# endif
1113- sys_dl_open, sys_dl_close, sys_dl_sym, 0, 0 };
1114-
1115-
1116-#endif /* HAVE_LIBDL */
1117-
1118-
1119-\f
1120-/* --- SHL_LOAD() INTERFACE LOADER --- */
1121-
1122-#if HAVE_SHL_LOAD
1123-
1124-/* dynamic linking with shl_load (HP-UX) (comments from gmodule) */
1125-
1126-#ifdef HAVE_DL_H
1127-# include <dl.h>
1128-#endif
1129-
1130-/* some flags are missing on some systems, so we provide
1131- * harmless defaults.
1132- *
1133- * Mandatory:
1134- * BIND_IMMEDIATE - Resolve symbol references when the library is loaded.
1135- * BIND_DEFERRED - Delay code symbol resolution until actual reference.
1136- *
1137- * Optionally:
1138- * BIND_FIRST - Place the library at the head of the symbol search
1139- * order.
1140- * BIND_NONFATAL - The default BIND_IMMEDIATE behavior is to treat all
1141- * unsatisfied symbols as fatal. This flag allows
1142- * binding of unsatisfied code symbols to be deferred
1143- * until use.
1144- * [Perl: For certain libraries, like DCE, deferred
1145- * binding often causes run time problems. Adding
1146- * BIND_NONFATAL to BIND_IMMEDIATE still allows
1147- * unresolved references in situations like this.]
1148- * BIND_NOSTART - Do not call the initializer for the shared library
1149- * when the library is loaded, nor on a future call to
1150- * shl_unload().
1151- * BIND_VERBOSE - Print verbose messages concerning possible
1152- * unsatisfied symbols.
1153- *
1154- * hp9000s700/hp9000s800:
1155- * BIND_RESTRICTED - Restrict symbols visible by the library to those
1156- * present at library load time.
1157- * DYNAMIC_PATH - Allow the loader to dynamically search for the
1158- * library specified by the path argument.
1159- */
1160-
1161-#ifndef DYNAMIC_PATH
1162-# define DYNAMIC_PATH 0
1163-#endif
1164-#ifndef BIND_RESTRICTED
1165-# define BIND_RESTRICTED 0
1166-#endif
1167-
1168-#define LT_BIND_FLAGS (BIND_IMMEDIATE | BIND_NONFATAL | DYNAMIC_PATH)
1169-
1170-static lt_module
1171-sys_shl_open (lt_user_data loader_data, const char *filename)
1172-{
1173- static shl_t self = (shl_t) 0;
1174- lt_module module = shl_load (filename, LT_BIND_FLAGS, 0L);
1175-
1176- /* Since searching for a symbol against a NULL module handle will also
1177- look in everything else that was already loaded and exported with
1178- the -E compiler flag, we always cache a handle saved before any
1179- modules are loaded. */
1180- if (!self)
1181- {
1182- lt_ptr address;
1183- shl_findsym (&self, "main", TYPE_UNDEFINED, &address);
1184- }
1185-
1186- if (!filename)
1187- {
1188- module = self;
1189- }
1190- else
1191- {
1192- module = shl_load (filename, LT_BIND_FLAGS, 0L);
1193-
1194- if (!module)
1195- {
1196- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN));
1197- }
1198- }
1199-
1200- return module;
1201-}
1202-
1203-static int
1204-sys_shl_close (lt_user_data loader_data, lt_module module)
1205-{
1206- int errors = 0;
1207-
1208- if (module && (shl_unload ((shl_t) (module)) != 0))
1209- {
1210- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE));
1211- ++errors;
1212- }
1213-
1214- return errors;
1215-}
1216-
1217-static lt_ptr
1218-sys_shl_sym (
1219- lt_user_data loader_data,
1220- lt_module module,
1221- const char *symbol)
1222-{
1223- lt_ptr address = 0;
1224-
1225- /* sys_shl_open should never return a NULL module handle */
1226- if (module == (lt_module) 0)
1227- {
1228- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE));
1229- }
1230- else if (!shl_findsym((shl_t*) &module, symbol, TYPE_UNDEFINED, &address))
1231- {
1232- if (!address)
1233- {
1234- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND));
1235- }
1236- }
1237-
1238- return address;
1239-}
1240-
1241-static struct lt_user_dlloader sys_shl = {
1242- 0, sys_shl_open, sys_shl_close, sys_shl_sym, 0, 0
1243-};
1244-
1245-#endif /* HAVE_SHL_LOAD */
1246-
1247-
1248-
1249-\f
1250-/* --- LOADLIBRARY() INTERFACE LOADER --- */
1251-
1252-#ifdef __WINDOWS__
1253-
1254-/* dynamic linking for Win32 */
1255-
1256-#include <windows.h>
1257-
1258-/* Forward declaration; required to implement handle search below. */
1259-static lt_dlhandle handles;
1260-
1261-static lt_module
1262-sys_wll_open (lt_user_data loader_data, const char *filename)
1263-{
1264- lt_dlhandle cur;
1265- lt_module module = 0;
1266- const char *errormsg = 0;
1267- char *searchname = 0;
1268- char *ext;
1269- char self_name_buf[MAX_PATH];
1270-
1271- if (!filename)
1272- {
1273- /* Get the name of main module */
1274- *self_name_buf = 0;
1275- GetModuleFileName (NULL, self_name_buf, sizeof (self_name_buf));
1276- filename = ext = self_name_buf;
1277- }
1278- else
1279- {
1280- ext = strrchr (filename, '.');
1281- }
1282-
1283- if (ext)
1284- {
1285- /* FILENAME already has an extension. */
1286- searchname = lt_estrdup (filename);
1287- }
1288- else
1289- {
1290- /* Append a `.' to stop Windows from adding an
1291- implicit `.dll' extension. */
1292- searchname = LT_EMALLOC (char, 2+ LT_STRLEN (filename));
1293- if (searchname)
1294- sprintf (searchname, "%s.", filename);
1295- }
1296- if (!searchname)
1297- return 0;
1298-
1299-#if __CYGWIN__
1300- {
1301- char wpath[MAX_PATH];
1302- cygwin_conv_to_full_win32_path(searchname, wpath);
1303- module = LoadLibrary(wpath);
1304- }
1305-#else
1306- module = LoadLibrary (searchname);
1307-#endif
1308- LT_DLFREE (searchname);
1309-
1310- /* libltdl expects this function to fail if it is unable
1311- to physically load the library. Sadly, LoadLibrary
1312- will search the loaded libraries for a match and return
1313- one of them if the path search load fails.
1314-
1315- We check whether LoadLibrary is returning a handle to
1316- an already loaded module, and simulate failure if we
1317- find one. */
1318- LT_DLMUTEX_LOCK ();
1319- cur = handles;
1320- while (cur)
1321- {
1322- if (!cur->module)
1323- {
1324- cur = 0;
1325- break;
1326- }
1327-
1328- if (cur->module == module)
1329- {
1330- break;
1331- }
1332-
1333- cur = cur->next;
1334- }
1335- LT_DLMUTEX_UNLOCK ();
1336-
1337- if (cur || !module)
1338- {
1339- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN));
1340- module = 0;
1341- }
1342-
1343- return module;
1344-}
1345-
1346-static int
1347-sys_wll_close (lt_user_data loader_data, lt_module module)
1348-{
1349- int errors = 0;
1350-
1351- if (FreeLibrary(module) == 0)
1352- {
1353- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE));
1354- ++errors;
1355- }
1356-
1357- return errors;
1358-}
1359-
1360-static lt_ptr
1361-sys_wll_sym (
1362- lt_user_data loader_data,
1363- lt_module module,
1364- const char *symbol)
1365-{
1366- lt_ptr address = GetProcAddress (module, symbol);
1367-
1368- if (!address)
1369- {
1370- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND));
1371- }
1372-
1373- return address;
1374-}
1375-
1376-static struct lt_user_dlloader sys_wll = {
1377- 0, sys_wll_open, sys_wll_close, sys_wll_sym, 0, 0
1378-};
1379-
1380-#endif /* __WINDOWS__ */
1381-
1382-
1383-
1384-\f
1385-/* --- LOAD_ADD_ON() INTERFACE LOADER --- */
1386-
1387-
1388-#ifdef __BEOS__
1389-
1390-/* dynamic linking for BeOS */
1391-
1392-#include <kernel/image.h>
1393-
1394-static lt_module
1395-sys_bedl_open (lt_user_data loader_data, const char *filename)
1396-{
1397- image_id image = 0;
1398-
1399- if (filename)
1400- {
1401- image = load_add_on (filename);
1402- }
1403- else
1404- {
1405- image_info info;
1406- int32 cookie = 0;
1407- if (get_next_image_info (0, &cookie, &info) == B_OK)
1408- image = load_add_on (info.name);
1409- }
1410-
1411- if (image <= 0)
1412- {
1413- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN));
1414- image = 0;
1415- }
1416-
1417- return (lt_module) image;
1418-}
1419-
1420-static int
1421-sys_bedl_close (lt_user_data loader_data, lt_module module)
1422-{
1423- int errors = 0;
1424-
1425- if (unload_add_on ((image_id) module) != B_OK)
1426- {
1427- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE));
1428- ++errors;
1429- }
1430-
1431- return errors;
1432-}
1433-
1434-static lt_ptr
1435-sys_bedl_sym (
1436- lt_user_data loader_data,
1437- lt_module module,
1438- const char *symbol)
1439-{
1440- lt_ptr address = 0;
1441- image_id image = (image_id) module;
1442-
1443- if (get_image_symbol (image, symbol, B_SYMBOL_TYPE_ANY, address) != B_OK)
1444- {
1445- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND));
1446- address = 0;
1447- }
1448-
1449- return address;
1450-}
1451-
1452-static struct lt_user_dlloader sys_bedl = {
1453- 0, sys_bedl_open, sys_bedl_close, sys_bedl_sym, 0, 0
1454-};
1455-
1456-#endif /* __BEOS__ */
1457-
1458-
1459-
1460-\f
1461-/* --- DLD_LINK() INTERFACE LOADER --- */
1462-
1463-
1464-#if HAVE_DLD
1465-
1466-/* dynamic linking with dld */
1467-
1468-#if HAVE_DLD_H
1469-#include <dld.h>
1470-#endif
1471-
1472-static lt_module
1473-sys_dld_open (lt_user_data loader_data, const char *filename)
1474-{
1475- lt_module module = strdup (filename);
1476-
1477- if (dld_link (filename) != 0)
1478- {
1479- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN));
1480- LT_DLFREE (module);
1481- module = 0;
1482- }
1483-
1484- return module;
1485-}
1486-
1487-static int
1488-sys_dld_close (lt_user_data loader_data, lt_module module)
1489-{
1490- int errors = 0;
1491-
1492- if (dld_unlink_by_file ((char*)(module), 1) != 0)
1493- {
1494- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE));
1495- ++errors;
1496- }
1497- else
1498- {
1499- LT_DLFREE (module);
1500- }
1501-
1502- return errors;
1503-}
1504-
1505-static lt_ptr
1506-sys_dld_sym (
1507- lt_user_data loader_data,
1508- lt_module module,
1509- const char *symbol)
1510-{
1511- lt_ptr address = dld_get_func (symbol);
1512-
1513- if (!address)
1514- {
1515- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND));
1516- }
1517-
1518- return address;
1519-}
1520-
1521-static struct lt_user_dlloader sys_dld = {
1522- 0, sys_dld_open, sys_dld_close, sys_dld_sym, 0, 0
1523-};
1524-
1525-#endif /* HAVE_DLD */
1526-
1527-/* --- DYLD() MACOSX/DARWIN INTERFACE LOADER --- */
1528-#if HAVE_DYLD
1529-
1530-
1531-#if HAVE_MACH_O_DYLD_H
1532-#if !defined(__APPLE_CC__) && !defined(__MWERKS__) && !defined(__private_extern__)
1533-/* Is this correct? Does it still function properly? */
1534-#define __private_extern__ extern
1535-#endif
1536-# include <mach-o/dyld.h>
1537-#endif
1538-#include <mach-o/getsect.h>
1539-
1540-/* We have to put some stuff here that isn't in older dyld.h files */
1541-#ifndef ENUM_DYLD_BOOL
1542-# define ENUM_DYLD_BOOL
1543-# undef FALSE
1544-# undef TRUE
1545- enum DYLD_BOOL {
1546- FALSE,
1547- TRUE
1548- };
1549-#endif
1550-#ifndef LC_REQ_DYLD
1551-# define LC_REQ_DYLD 0x80000000
1552-#endif
1553-#ifndef LC_LOAD_WEAK_DYLIB
1554-# define LC_LOAD_WEAK_DYLIB (0x18 | LC_REQ_DYLD)
1555-#endif
1556-static const struct mach_header * (*ltdl_NSAddImage)(const char *image_name, unsigned long options) = 0;
1557-static NSSymbol (*ltdl_NSLookupSymbolInImage)(const struct mach_header *image,const char *symbolName, unsigned long options) = 0;
1558-static enum DYLD_BOOL (*ltdl_NSIsSymbolNameDefinedInImage)(const struct mach_header *image, const char *symbolName) = 0;
1559-static enum DYLD_BOOL (*ltdl_NSMakePrivateModulePublic)(NSModule module) = 0;
1560-
1561-#ifndef NSADDIMAGE_OPTION_NONE
1562-#define NSADDIMAGE_OPTION_NONE 0x0
1563-#endif
1564-#ifndef NSADDIMAGE_OPTION_RETURN_ON_ERROR
1565-#define NSADDIMAGE_OPTION_RETURN_ON_ERROR 0x1
1566-#endif
1567-#ifndef NSADDIMAGE_OPTION_WITH_SEARCHING
1568-#define NSADDIMAGE_OPTION_WITH_SEARCHING 0x2
1569-#endif
1570-#ifndef NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED
1571-#define NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED 0x4
1572-#endif
1573-#ifndef NSADDIMAGE_OPTION_MATCH_FILENAME_BY_INSTALLNAME
1574-#define NSADDIMAGE_OPTION_MATCH_FILENAME_BY_INSTALLNAME 0x8
1575-#endif
1576-#ifndef NSLOOKUPSYMBOLINIMAGE_OPTION_BIND
1577-#define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND 0x0
1578-#endif
1579-#ifndef NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW
1580-#define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW 0x1
1581-#endif
1582-#ifndef NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_FULLY
1583-#define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_FULLY 0x2
1584-#endif
1585-#ifndef NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR
1586-#define NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR 0x4
1587-#endif
1588-
1589-
1590-static const char *
1591-lt_int_dyld_error(char* othererror)
1592-{
1593-/* return the dyld error string, or the passed in error string if none */
1594- NSLinkEditErrors ler;
1595- int lerno;
1596- const char *errstr;
1597- const char *file;
1598- NSLinkEditError(&ler,&lerno,&file,&errstr);
1599- if (!errstr || !strlen(errstr)) errstr = othererror;
1600- return errstr;
1601-}
1602-
1603-static const struct mach_header *
1604-lt_int_dyld_get_mach_header_from_nsmodule(NSModule module)
1605-{
1606-/* There should probably be an apple dyld api for this */
1607- int i=_dyld_image_count();
1608- int j;
1609- const char *modname=NSNameOfModule(module);
1610- const struct mach_header *mh=NULL;
1611- if (!modname) return NULL;
1612- for (j = 0; j < i; j++)
1613- {
1614- if (!strcmp(_dyld_get_image_name(j),modname))
1615- {
1616- mh=_dyld_get_image_header(j);
1617- break;
1618- }
1619- }
1620- return mh;
1621-}
1622-
1623-static const char* lt_int_dyld_lib_install_name(const struct mach_header *mh)
1624-{
1625-/* NSAddImage is also used to get the loaded image, but it only works if the lib
1626- is installed, for uninstalled libs we need to check the install_names against
1627- each other. Note that this is still broken if DYLD_IMAGE_SUFFIX is set and a
1628- different lib was loaded as a result
1629-*/
1630- int j;
1631- struct load_command *lc;
1632- unsigned long offset = sizeof(struct mach_header);
1633- const char* retStr=NULL;
1634- for (j = 0; j < mh->ncmds; j++)
1635- {
1636- lc = (struct load_command*)(((unsigned long)mh) + offset);
1637- if (LC_ID_DYLIB == lc->cmd)
1638- {
1639- retStr=(char*)(((struct dylib_command*)lc)->dylib.name.offset +
1640- (unsigned long)lc);
1641- }
1642- offset += lc->cmdsize;
1643- }
1644- return retStr;
1645-}
1646-
1647-static const struct mach_header *
1648-lt_int_dyld_match_loaded_lib_by_install_name(const char *name)
1649-{
1650- int i=_dyld_image_count();
1651- int j;
1652- const struct mach_header *mh=NULL;
1653- const char *id=NULL;
1654- for (j = 0; j < i; j++)
1655- {
1656- id=lt_int_dyld_lib_install_name(_dyld_get_image_header(j));
1657- if ((id) && (!strcmp(id,name)))
1658- {
1659- mh=_dyld_get_image_header(j);
1660- break;
1661- }
1662- }
1663- return mh;
1664-}
1665-
1666-static NSSymbol
1667-lt_int_dyld_NSlookupSymbolInLinkedLibs(const char *symbol, const struct mach_header *mh)
1668-{
1669- /* Safe to assume our mh is good */
1670- int j;
1671- struct load_command *lc;
1672- unsigned long offset = sizeof(struct mach_header);
1673- NSSymbol retSym = 0;
1674- const struct mach_header *mh1;
1675- if ((ltdl_NSLookupSymbolInImage) && NSIsSymbolNameDefined(symbol) )
1676- {
1677- for (j = 0; j < mh->ncmds; j++)
1678- {
1679- lc = (struct load_command*)(((unsigned long)mh) + offset);
1680- if ((LC_LOAD_DYLIB == lc->cmd) || (LC_LOAD_WEAK_DYLIB == lc->cmd))
1681- {
1682- mh1=lt_int_dyld_match_loaded_lib_by_install_name((char*)(((struct dylib_command*)lc)->dylib.name.offset +
1683- (unsigned long)lc));
1684- if (!mh1)
1685- {
1686- /* Maybe NSAddImage can find it */
1687- mh1=ltdl_NSAddImage((char*)(((struct dylib_command*)lc)->dylib.name.offset +
1688- (unsigned long)lc),
1689- NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED +
1690- NSADDIMAGE_OPTION_WITH_SEARCHING +
1691- NSADDIMAGE_OPTION_RETURN_ON_ERROR );
1692- }
1693- if (mh1)
1694- {
1695- retSym = ltdl_NSLookupSymbolInImage(mh1,
1696- symbol,
1697- NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW
1698- | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR
1699- );
1700- if (retSym) break;
1701- }
1702- }
1703- offset += lc->cmdsize;
1704- }
1705- }
1706- return retSym;
1707-}
1708-
1709-static int
1710-sys_dyld_init()
1711-{
1712- int retCode = 0;
1713- int err = 0;
1714- if (!_dyld_present()) {
1715- retCode=1;
1716- }
1717- else {
1718- err = _dyld_func_lookup("__dyld_NSAddImage",(unsigned long*)&ltdl_NSAddImage);
1719- err = _dyld_func_lookup("__dyld_NSLookupSymbolInImage",(unsigned long*)&ltdl_NSLookupSymbolInImage);
1720- err = _dyld_func_lookup("__dyld_NSIsSymbolNameDefinedInImage",(unsigned long*)&ltdl_NSIsSymbolNameDefinedInImage);
1721- err = _dyld_func_lookup("__dyld_NSMakePrivateModulePublic",(unsigned long*)&ltdl_NSMakePrivateModulePublic);
1722- }
1723- return retCode;
1724-}
1725-
1726-static lt_module
1727-sys_dyld_open (lt_user_data loader_data, const char *filename)
1728-{
1729- lt_module module = 0;
1730- NSObjectFileImage ofi = 0;
1731- NSObjectFileImageReturnCode ofirc;
1732-
1733- if (!filename)
1734- return (lt_module)-1;
1735- ofirc = NSCreateObjectFileImageFromFile(filename, &ofi);
1736- switch (ofirc)
1737- {
1738- case NSObjectFileImageSuccess:
1739- module = NSLinkModule(ofi, filename,
1740- NSLINKMODULE_OPTION_RETURN_ON_ERROR
1741- | NSLINKMODULE_OPTION_PRIVATE
1742- | NSLINKMODULE_OPTION_BINDNOW);
1743- NSDestroyObjectFileImage(ofi);
1744- if (module)
1745- ltdl_NSMakePrivateModulePublic(module);
1746- break;
1747- case NSObjectFileImageInappropriateFile:
1748- if (ltdl_NSIsSymbolNameDefinedInImage && ltdl_NSLookupSymbolInImage)
1749- {
1750- module = (lt_module)ltdl_NSAddImage(filename, NSADDIMAGE_OPTION_RETURN_ON_ERROR);
1751- break;
1752- }
1753- default:
1754- LT_DLMUTEX_SETERROR (lt_int_dyld_error(LT_DLSTRERROR(CANNOT_OPEN)));
1755- return 0;
1756- }
1757- if (!module) LT_DLMUTEX_SETERROR (lt_int_dyld_error(LT_DLSTRERROR(CANNOT_OPEN)));
1758- return module;
1759-}
1760-
1761-static int
1762-sys_dyld_close (lt_user_data loader_data, lt_module module)
1763-{
1764- int retCode = 0;
1765- int flags = 0;
1766- if (module == (lt_module)-1) return 0;
1767-#ifdef __BIG_ENDIAN__
1768- if (((struct mach_header *)module)->magic == MH_MAGIC)
1769-#else
1770- if (((struct mach_header *)module)->magic == MH_CIGAM)
1771-#endif
1772- {
1773- LT_DLMUTEX_SETERROR("Can not close a dylib");
1774- retCode = 1;
1775- }
1776- else
1777- {
1778-#if 1
1779-/* Currently, if a module contains c++ static destructors and it is unloaded, we
1780- get a segfault in atexit(), due to compiler and dynamic loader differences of
1781- opinion, this works around that.
1782-*/
1783- if ((const struct section *)NULL !=
1784- getsectbynamefromheader(lt_int_dyld_get_mach_header_from_nsmodule(module),
1785- "__DATA","__mod_term_func"))
1786- {
1787- flags += NSUNLINKMODULE_OPTION_KEEP_MEMORY_MAPPED;
1788- }
1789-#endif
1790-#ifdef __ppc__
1791- flags += NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES;
1792-#endif
1793- if (!NSUnLinkModule(module,flags))
1794- {
1795- retCode=1;
1796- LT_DLMUTEX_SETERROR (lt_int_dyld_error(LT_DLSTRERROR(CANNOT_CLOSE)));
1797- }
1798- }
1799-
1800- return retCode;
1801-}
1802-
1803-static lt_ptr
1804-sys_dyld_sym (
1805- lt_user_data loader_data,
1806- lt_module module,
1807- const char *symbol)
1808-{
1809- lt_ptr address = 0;
1810- NSSymbol *nssym = 0;
1811- void *unused;
1812- const struct mach_header *mh=NULL;
1813- char saveError[256] = "Symbol not found";
1814- if (module == (lt_module)-1)
1815- {
1816- _dyld_lookup_and_bind(symbol,(unsigned long*)&address,&unused);
1817- return address;
1818- }
1819-#ifdef __BIG_ENDIAN__
1820- if (((struct mach_header *)module)->magic == MH_MAGIC)
1821-#else
1822- if (((struct mach_header *)module)->magic == MH_CIGAM)
1823-#endif
1824- {
1825- if (ltdl_NSIsSymbolNameDefinedInImage && ltdl_NSLookupSymbolInImage)
1826- {
1827- mh=module;
1828- if (ltdl_NSIsSymbolNameDefinedInImage((struct mach_header*)module,symbol))
1829- {
1830- nssym = ltdl_NSLookupSymbolInImage((struct mach_header*)module,
1831- symbol,
1832- NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW
1833- | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR
1834- );
1835- }
1836- }
1837-
1838- }
1839- else {
1840- nssym = NSLookupSymbolInModule(module, symbol);
1841- }
1842- if (!nssym)
1843- {
1844- strncpy(saveError, lt_int_dyld_error(LT_DLSTRERROR(SYMBOL_NOT_FOUND)), 255);
1845- saveError[255] = 0;
1846- if (!mh) mh=lt_int_dyld_get_mach_header_from_nsmodule(module);
1847- nssym = lt_int_dyld_NSlookupSymbolInLinkedLibs(symbol,mh);
1848- }
1849- if (!nssym)
1850- {
1851- LT_DLMUTEX_SETERROR (saveError);
1852- return NULL;
1853- }
1854- return NSAddressOfSymbol(nssym);
1855-}
1856-
1857-static struct lt_user_dlloader sys_dyld =
1858- { "_", sys_dyld_open, sys_dyld_close, sys_dyld_sym, 0, 0 };
1859-
1860-
1861-#endif /* HAVE_DYLD */
1862-
1863-\f
1864-/* --- DLPREOPEN() INTERFACE LOADER --- */
1865-
1866-
1867-/* emulate dynamic linking using preloaded_symbols */
1868-
1869-typedef struct lt_dlsymlists_t
1870-{
1871- struct lt_dlsymlists_t *next;
1872- const lt_dlsymlist *syms;
1873-} lt_dlsymlists_t;
1874-
1875-static const lt_dlsymlist *default_preloaded_symbols = 0;
1876-static lt_dlsymlists_t *preloaded_symbols = 0;
1877-
1878-static int
1879-presym_init (lt_user_data loader_data)
1880-{
1881- int errors = 0;
1882-
1883- LT_DLMUTEX_LOCK ();
1884-
1885- preloaded_symbols = 0;
1886- if (default_preloaded_symbols)
1887- {
1888- errors = lt_dlpreload (default_preloaded_symbols);
1889- }
1890-
1891- LT_DLMUTEX_UNLOCK ();
1892-
1893- return errors;
1894-}
1895-
1896-static int
1897-presym_free_symlists ()
1898-{
1899- lt_dlsymlists_t *lists;
1900-
1901- LT_DLMUTEX_LOCK ();
1902-
1903- lists = preloaded_symbols;
1904- while (lists)
1905- {
1906- lt_dlsymlists_t *tmp = lists;
1907-
1908- lists = lists->next;
1909- LT_DLFREE (tmp);
1910- }
1911- preloaded_symbols = 0;
1912-
1913- LT_DLMUTEX_UNLOCK ();
1914-
1915- return 0;
1916-}
1917-
1918-static int
1919-presym_exit (lt_user_data loader_data)
1920-{
1921- presym_free_symlists ();
1922- return 0;
1923-}
1924-
1925-static int
1926-presym_add_symlist (const lt_dlsymlist *preloaded)
1927-{
1928- lt_dlsymlists_t *tmp;
1929- lt_dlsymlists_t *lists;
1930- int errors = 0;
1931-
1932- LT_DLMUTEX_LOCK ();
1933-
1934- lists = preloaded_symbols;
1935- while (lists)
1936- {
1937- if (lists->syms == preloaded)
1938- {
1939- goto done;
1940- }
1941- lists = lists->next;
1942- }
1943-
1944- tmp = LT_EMALLOC (lt_dlsymlists_t, 1);
1945- if (tmp)
1946- {
1947- memset (tmp, 0, sizeof(lt_dlsymlists_t));
1948- tmp->syms = preloaded;
1949- tmp->next = preloaded_symbols;
1950- preloaded_symbols = tmp;
1951- }
1952- else
1953- {
1954- ++errors;
1955- }
1956-
1957- done:
1958- LT_DLMUTEX_UNLOCK ();
1959- return errors;
1960-}
1961-
1962-static lt_module
1963-presym_open (lt_user_data loader_data, const char *filename)
1964-{
1965- lt_dlsymlists_t *lists;
1966- lt_module module = (lt_module) 0;
1967-
1968- LT_DLMUTEX_LOCK ();
1969- lists = preloaded_symbols;
1970-
1971- if (!lists)
1972- {
1973- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_SYMBOLS));
1974- goto done;
1975- }
1976-
1977- /* Can't use NULL as the reflective symbol header, as NULL is
1978- used to mark the end of the entire symbol list. Self-dlpreopened
1979- symbols follow this magic number, chosen to be an unlikely
1980- clash with a real module name. */
1981- if (!filename)
1982- {
1983- filename = "@PROGRAM@";
1984- }
1985-
1986- while (lists)
1987- {
1988- const lt_dlsymlist *syms = lists->syms;
1989-
1990- while (syms->name)
1991- {
1992- if (!syms->address && strcmp(syms->name, filename) == 0)
1993- {
1994- module = (lt_module) syms;
1995- goto done;
1996- }
1997- ++syms;
1998- }
1999-
2000- lists = lists->next;
2001- }
2002-
2003- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND));
2004-
2005- done:
2006- LT_DLMUTEX_UNLOCK ();
2007- return module;
2008-}
2009-
2010-static int
2011-presym_close (lt_user_data loader_data, lt_module module)
2012-{
2013- /* Just to silence gcc -Wall */
2014- module = 0;
2015- return 0;
2016-}
2017-
2018-static lt_ptr
2019-presym_sym (
2020- lt_user_data loader_data,
2021- lt_module module,
2022- const char *symbol)
2023-{
2024- lt_dlsymlist *syms = (lt_dlsymlist*) module;
2025-
2026- ++syms;
2027- while (syms->address)
2028- {
2029- if (strcmp(syms->name, symbol) == 0)
2030- {
2031- return syms->address;
2032- }
2033-
2034- ++syms;
2035- }
2036-
2037- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND));
2038-
2039- return 0;
2040-}
2041-
2042-static struct lt_user_dlloader presym = {
2043- 0, presym_open, presym_close, presym_sym, presym_exit, 0
2044-};
2045-
2046-
2047-
2048-
2049-\f
2050-/* --- DYNAMIC MODULE LOADING --- */
2051-
2052-
2053-/* The type of a function used at each iteration of foreach_dirinpath(). */
2054-typedef int foreach_callback_func LT_PARAMS((char *filename, lt_ptr data1,
2055- lt_ptr data2));
2056-
2057-static int foreach_dirinpath LT_PARAMS((const char *search_path,
2058- const char *base_name,
2059- foreach_callback_func *func,
2060- lt_ptr data1, lt_ptr data2));
2061-
2062-static int find_file_callback LT_PARAMS((char *filename, lt_ptr data,
2063- lt_ptr ignored));
2064-static int find_handle_callback LT_PARAMS((char *filename, lt_ptr data,
2065- lt_ptr ignored));
2066-static int foreachfile_callback LT_PARAMS((char *filename, lt_ptr data1,
2067- lt_ptr data2));
2068-
2069-
2070-static int canonicalize_path LT_PARAMS((const char *path,
2071- char **pcanonical));
2072-static int argzize_path LT_PARAMS((const char *path,
2073- char **pargz,
2074- size_t *pargz_len));
2075-static FILE *find_file LT_PARAMS((const char *search_path,
2076- const char *base_name,
2077- char **pdir));
2078-static lt_dlhandle *find_handle LT_PARAMS((const char *search_path,
2079- const char *base_name,
2080- lt_dlhandle *handle));
2081-static int find_module LT_PARAMS((lt_dlhandle *handle,
2082- const char *dir,
2083- const char *libdir,
2084- const char *dlname,
2085- const char *old_name,
2086- int installed));
2087-static int free_vars LT_PARAMS((char *dlname, char *oldname,
2088- char *libdir, char *deplibs));
2089-static int load_deplibs LT_PARAMS((lt_dlhandle handle,
2090- char *deplibs));
2091-static int trim LT_PARAMS((char **dest,
2092- const char *str));
2093-static int try_dlopen LT_PARAMS((lt_dlhandle *handle,
2094- const char *filename));
2095-static int tryall_dlopen LT_PARAMS((lt_dlhandle *handle,
2096- const char *filename));
2097-static int unload_deplibs LT_PARAMS((lt_dlhandle handle));
2098-static int lt_argz_insert LT_PARAMS((char **pargz,
2099- size_t *pargz_len,
2100- char *before,
2101- const char *entry));
2102-static int lt_argz_insertinorder LT_PARAMS((char **pargz,
2103- size_t *pargz_len,
2104- const char *entry));
2105-static int lt_argz_insertdir LT_PARAMS((char **pargz,
2106- size_t *pargz_len,
2107- const char *dirnam,
2108- struct dirent *dp));
2109-static int lt_dlpath_insertdir LT_PARAMS((char **ppath,
2110- char *before,
2111- const char *dir));
2112-static int list_files_by_dir LT_PARAMS((const char *dirnam,
2113- char **pargz,
2114- size_t *pargz_len));
2115-static int file_not_found LT_PARAMS((void));
2116-
2117-static char *user_search_path= 0;
2118-static lt_dlloader *loaders = 0;
2119-static lt_dlhandle handles = 0;
2120-static int initialized = 0;
2121-
2122-/* Initialize libltdl. */
2123-int
2124-lt_dlinit ()
2125-{
2126- int errors = 0;
2127-
2128- LT_DLMUTEX_LOCK ();
2129-
2130- /* Initialize only at first call. */
2131- if (++initialized == 1)
2132- {
2133- handles = 0;
2134- user_search_path = 0; /* empty search path */
2135-
2136-#if HAVE_LIBDL
2137- errors += lt_dlloader_add (lt_dlloader_next (0), &sys_dl, "dlopen");
2138-#endif
2139-#if HAVE_SHL_LOAD
2140- errors += lt_dlloader_add (lt_dlloader_next (0), &sys_shl, "dlopen");
2141-#endif
2142-#ifdef __WINDOWS__
2143- errors += lt_dlloader_add (lt_dlloader_next (0), &sys_wll, "dlopen");
2144-#endif
2145-#ifdef __BEOS__
2146- errors += lt_dlloader_add (lt_dlloader_next (0), &sys_bedl, "dlopen");
2147-#endif
2148-#if HAVE_DLD
2149- errors += lt_dlloader_add (lt_dlloader_next (0), &sys_dld, "dld");
2150-#endif
2151-#if HAVE_DYLD
2152- errors += lt_dlloader_add (lt_dlloader_next (0), &sys_dyld, "dyld");
2153- errors += sys_dyld_init();
2154-#endif
2155- errors += lt_dlloader_add (lt_dlloader_next (0), &presym, "dlpreload");
2156-
2157- if (presym_init (presym.dlloader_data))
2158- {
2159- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INIT_LOADER));
2160- ++errors;
2161- }
2162- else if (errors != 0)
2163- {
2164- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (DLOPEN_NOT_SUPPORTED));
2165- ++errors;
2166- }
2167- }
2168-
2169- LT_DLMUTEX_UNLOCK ();
2170-
2171- return errors;
2172-}
2173-
2174-int
2175-lt_dlpreload (const lt_dlsymlist *preloaded)
2176-{
2177- int errors = 0;
2178-
2179- if (preloaded)
2180- {
2181- errors = presym_add_symlist (preloaded);
2182- }
2183- else
2184- {
2185- presym_free_symlists();
2186-
2187- LT_DLMUTEX_LOCK ();
2188- if (default_preloaded_symbols)
2189- {
2190- errors = lt_dlpreload (default_preloaded_symbols);
2191- }
2192- LT_DLMUTEX_UNLOCK ();
2193- }
2194-
2195- return errors;
2196-}
2197-
2198-int
2199-lt_dlpreload_default (const lt_dlsymlist *preloaded)
2200-{
2201- LT_DLMUTEX_LOCK ();
2202- default_preloaded_symbols = preloaded;
2203- LT_DLMUTEX_UNLOCK ();
2204- return 0;
2205-}
2206-
2207-int
2208-lt_dlexit ()
2209-{
2210- /* shut down libltdl */
2211- lt_dlloader *loader;
2212- int errors = 0;
2213-
2214- LT_DLMUTEX_LOCK ();
2215- loader = loaders;
2216-
2217- if (!initialized)
2218- {
2219- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SHUTDOWN));
2220- ++errors;
2221- goto done;
2222- }
2223-
2224- /* shut down only at last call. */
2225- if (--initialized == 0)
2226- {
2227- int level;
2228-
2229- while (handles && LT_DLIS_RESIDENT (handles))
2230- {
2231- handles = handles->next;
2232- }
2233-
2234- /* close all modules */
2235- for (level = 1; handles; ++level)
2236- {
2237- lt_dlhandle cur = handles;
2238- int saw_nonresident = 0;
2239-
2240- while (cur)
2241- {
2242- lt_dlhandle tmp = cur;
2243- cur = cur->next;
2244- if (!LT_DLIS_RESIDENT (tmp))
2245- saw_nonresident = 1;
2246- if (!LT_DLIS_RESIDENT (tmp) && tmp->info.ref_count <= level)
2247- {
2248- if (lt_dlclose (tmp))
2249- {
2250- ++errors;
2251- }
2252- }
2253- }
2254- /* done if only resident modules are left */
2255- if (!saw_nonresident)
2256- break;
2257- }
2258-
2259- /* close all loaders */
2260- while (loader)
2261- {
2262- lt_dlloader *next = loader->next;
2263- lt_user_data data = loader->dlloader_data;
2264- if (loader->dlloader_exit && loader->dlloader_exit (data))
2265- {
2266- ++errors;
2267- }
2268-
2269- LT_DLMEM_REASSIGN (loader, next);
2270- }
2271- loaders = 0;
2272- }
2273-
2274- done:
2275- LT_DLMUTEX_UNLOCK ();
2276- return errors;
2277-}
2278-
2279-static int
2280-tryall_dlopen (lt_dlhandle *handle, const char *filename)
2281-{
2282- lt_dlhandle cur;
2283- lt_dlloader *loader;
2284- const char *saved_error;
2285- int errors = 0;
2286-
2287- LT_DLMUTEX_GETERROR (saved_error);
2288- LT_DLMUTEX_LOCK ();
2289-
2290- cur = handles;
2291- loader = loaders;
2292-
2293- /* check whether the module was already opened */
2294- while (cur)
2295- {
2296- /* try to dlopen the program itself? */
2297- if (!cur->info.filename && !filename)
2298- {
2299- break;
2300- }
2301-
2302- if (cur->info.filename && filename
2303- && strcmp (cur->info.filename, filename) == 0)
2304- {
2305- break;
2306- }
2307-
2308- cur = cur->next;
2309- }
2310-
2311- if (cur)
2312- {
2313- ++cur->info.ref_count;
2314- *handle = cur;
2315- goto done;
2316- }
2317-
2318- cur = *handle;
2319- if (filename)
2320- {
2321- /* Comment out the check of file permissions using access.
2322- This call seems to always return -1 with error EACCES.
2323- */
2324- /* We need to catch missing file errors early so that
2325- file_not_found() can detect what happened.
2326- if (access (filename, R_OK) != 0)
2327- {
2328- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND));
2329- ++errors;
2330- goto done;
2331- } */
2332-
2333- cur->info.filename = lt_estrdup (filename);
2334- if (!cur->info.filename)
2335- {
2336- ++errors;
2337- goto done;
2338- }
2339- }
2340- else
2341- {
2342- cur->info.filename = 0;
2343- }
2344-
2345- while (loader)
2346- {
2347- lt_user_data data = loader->dlloader_data;
2348-
2349- cur->module = loader->module_open (data, filename);
2350-
2351- if (cur->module != 0)
2352- {
2353- break;
2354- }
2355- loader = loader->next;
2356- }
2357-
2358- if (!loader)
2359- {
2360- LT_DLFREE (cur->info.filename);
2361- ++errors;
2362- goto done;
2363- }
2364-
2365- cur->loader = loader;
2366- LT_DLMUTEX_SETERROR (saved_error);
2367-
2368- done:
2369- LT_DLMUTEX_UNLOCK ();
2370-
2371- return errors;
2372-}
2373-
2374-static int
2375-tryall_dlopen_module (
2376- lt_dlhandle *handle,
2377- const char *prefix,
2378- const char *dirname,
2379- const char *dlname)
2380-{
2381- int error = 0;
2382- char *filename = 0;
2383- size_t filename_len = 0;
2384- size_t dirname_len = LT_STRLEN (dirname);
2385-
2386- assert (handle);
2387- assert (dirname);
2388- assert (dlname);
2389-#ifdef LT_DIRSEP_CHAR
2390- /* Only canonicalized names (i.e. with DIRSEP chars already converted)
2391- should make it into this function: */
2392- assert (strchr (dirname, LT_DIRSEP_CHAR) == 0);
2393-#endif
2394-
2395- if (dirname_len > 0)
2396- if (dirname[dirname_len -1] == '/')
2397- --dirname_len;
2398- filename_len = dirname_len + 1 + LT_STRLEN (dlname);
2399-
2400- /* Allocate memory, and combine DIRNAME and MODULENAME into it.
2401- The PREFIX (if any) is handled below. */
2402- filename = LT_EMALLOC (char, dirname_len + 1 + filename_len + 1);
2403- if (!filename)
2404- return 1;
2405-
2406- sprintf (filename, "%.*s/%s", (int) dirname_len, dirname, dlname);
2407-
2408- /* Now that we have combined DIRNAME and MODULENAME, if there is
2409- also a PREFIX to contend with, simply recurse with the arguments
2410- shuffled. Otherwise, attempt to open FILENAME as a module. */
2411- if (prefix)
2412- {
2413- error += tryall_dlopen_module (handle,
2414- (const char *) 0, prefix, filename);
2415- }
2416- else if (tryall_dlopen (handle, filename) != 0)
2417- {
2418- ++error;
2419- }
2420-
2421- LT_DLFREE (filename);
2422- return error;
2423-}
2424-
2425-static int
2426-find_module (
2427- lt_dlhandle *handle,
2428- const char *dir,
2429- const char *libdir,
2430- const char *dlname,
2431- const char *old_name,
2432- int installed)
2433-{
2434- /* Try to open the old library first; if it was dlpreopened,
2435- we want the preopened version of it, even if a dlopenable
2436- module is available. */
2437- if (old_name && tryall_dlopen (handle, old_name) == 0)
2438- {
2439- return 0;
2440- }
2441-
2442- /* Try to open the dynamic library. */
2443- if (dlname)
2444- {
2445- /* try to open the installed module */
2446- if (installed && libdir)
2447- {
2448- if (tryall_dlopen_module (handle,
2449- (const char *) 0, libdir, dlname) == 0)
2450- return 0;
2451- }
2452-
2453- /* try to open the not-installed module */
2454- if (!installed)
2455- {
2456- if (tryall_dlopen_module (handle, dir, objdir, dlname) == 0)
2457- return 0;
2458- }
2459-
2460- /* maybe it was moved to another directory */
2461- {
2462- if (tryall_dlopen_module (handle,
2463- (const char *) 0, dir, dlname) == 0)
2464- return 0;
2465- }
2466- }
2467-
2468- return 1;
2469-}
2470-
2471-
2472-static int
2473-canonicalize_path (
2474- const char *path,
2475- char **pcanonical)
2476-{
2477- char *canonical = 0;
2478-
2479- assert (path && *path);
2480- assert (pcanonical);
2481-
2482- canonical = LT_EMALLOC (char, 1+ LT_STRLEN (path));
2483- if (!canonical)
2484- return 1;
2485-
2486- {
2487- size_t dest = 0;
2488- size_t src;
2489- for (src = 0; path[src] != LT_EOS_CHAR; ++src)
2490- {
2491- /* Path separators are not copied to the beginning or end of
2492- the destination, or if another separator would follow
2493- immediately. */
2494- if (path[src] == LT_PATHSEP_CHAR)
2495- {
2496- if ((dest == 0)
2497- || (path[1+ src] == LT_PATHSEP_CHAR)
2498- || (path[1+ src] == LT_EOS_CHAR))
2499- continue;
2500- }
2501-
2502- /* Anything other than a directory separator is copied verbatim. */
2503- if ((path[src] != '/')
2504-#ifdef LT_DIRSEP_CHAR
2505- && (path[src] != LT_DIRSEP_CHAR)
2506-#endif
2507- )
2508- {
2509- canonical[dest++] = path[src];
2510- }
2511- /* Directory separators are converted and copied only if they are
2512- not at the end of a path -- i.e. before a path separator or
2513- NULL terminator. */
2514- else if ((path[1+ src] != LT_PATHSEP_CHAR)
2515- && (path[1+ src] != LT_EOS_CHAR)
2516-#ifdef LT_DIRSEP_CHAR
2517- && (path[1+ src] != LT_DIRSEP_CHAR)
2518-#endif
2519- && (path[1+ src] != '/'))
2520- {
2521- canonical[dest++] = '/';
2522- }
2523- }
2524-
2525- /* Add an end-of-string marker at the end. */
2526- canonical[dest] = LT_EOS_CHAR;
2527- }
2528-
2529- /* Assign new value. */
2530- *pcanonical = canonical;
2531-
2532- return 0;
2533-}
2534-
2535-static int
2536-argzize_path (
2537- const char *path,
2538- char **pargz,
2539- size_t *pargz_len)
2540-{
2541- error_t error;
2542-
2543- assert (path);
2544- assert (pargz);
2545- assert (pargz_len);
2546-
2547- if ((error = argz_create_sep (path, LT_PATHSEP_CHAR, pargz, pargz_len)))
2548- {
2549- switch (error)
2550- {
2551- case ENOMEM:
2552- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY));
2553- break;
2554- default:
2555- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (UNKNOWN));
2556- break;
2557- }
2558-
2559- return 1;
2560- }
2561-
2562- return 0;
2563-}
2564-
2565-/* Repeatedly call FUNC with each LT_PATHSEP_CHAR delimited element
2566- of SEARCH_PATH and references to DATA1 and DATA2, until FUNC returns
2567- non-zero or all elements are exhausted. If BASE_NAME is non-NULL,
2568- it is appended to each SEARCH_PATH element before FUNC is called. */
2569-static int
2570-foreach_dirinpath (
2571- const char *search_path,
2572- const char *base_name,
2573- foreach_callback_func *func,
2574- lt_ptr data1,
2575- lt_ptr data2)
2576-{
2577- int result = 0;
2578- int filenamesize = 0;
2579- size_t lenbase = LT_STRLEN (base_name);
2580- size_t argz_len = 0;
2581- char *argz = 0;
2582- char *filename = 0;
2583- char *canonical = 0;
2584-
2585- LT_DLMUTEX_LOCK ();
2586-
2587- if (!search_path || !*search_path)
2588- {
2589- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND));
2590- goto cleanup;
2591- }
2592-
2593- if (canonicalize_path (search_path, &canonical) != 0)
2594- goto cleanup;
2595-
2596- if (argzize_path (canonical, &argz, &argz_len) != 0)
2597- goto cleanup;
2598-
2599- {
2600- char *dir_name = 0;
2601- while ((dir_name = argz_next (argz, argz_len, dir_name)))
2602- {
2603- size_t lendir = LT_STRLEN (dir_name);
2604-
2605- if (lendir +1 +lenbase >= filenamesize)
2606- {
2607- LT_DLFREE (filename);
2608- filenamesize = lendir +1 +lenbase +1; /* "/d" + '/' + "f" + '\0' */
2609- filename = LT_EMALLOC (char, filenamesize);
2610- if (!filename)
2611- goto cleanup;
2612- }
2613-
2614- assert (filenamesize > lendir);
2615- strcpy (filename, dir_name);
2616-
2617- if (base_name && *base_name)
2618- {
2619- if (filename[lendir -1] != '/')
2620- filename[lendir++] = '/';
2621- strcpy (filename +lendir, base_name);
2622- }
2623-
2624- if ((result = (*func) (filename, data1, data2)))
2625- {
2626- break;
2627- }
2628- }
2629- }
2630-
2631- cleanup:
2632- LT_DLFREE (argz);
2633- LT_DLFREE (canonical);
2634- LT_DLFREE (filename);
2635-
2636- LT_DLMUTEX_UNLOCK ();
2637-
2638- return result;
2639-}
2640-
2641-/* If FILEPATH can be opened, store the name of the directory component
2642- in DATA1, and the opened FILE* structure address in DATA2. Otherwise
2643- DATA1 is unchanged, but DATA2 is set to a pointer to NULL. */
2644-static int
2645-find_file_callback (
2646- char *filename,
2647- lt_ptr data1,
2648- lt_ptr data2)
2649-{
2650- char **pdir = (char **) data1;
2651- FILE **pfile = (FILE **) data2;
2652- int is_done = 0;
2653-
2654- assert (filename && *filename);
2655- assert (pdir);
2656- assert (pfile);
2657-
2658- if ((*pfile = fopen (filename, LT_READTEXT_MODE)))
2659- {
2660- char *dirend = strrchr (filename, '/');
2661-
2662- if (dirend > filename)
2663- *dirend = LT_EOS_CHAR;
2664-
2665- LT_DLFREE (*pdir);
2666- *pdir = lt_estrdup (filename);
2667- is_done = (*pdir == 0) ? -1 : 1;
2668- }
2669-
2670- return is_done;
2671-}
2672-
2673-static FILE *
2674-find_file (
2675- const char *search_path,
2676- const char *base_name,
2677- char **pdir)
2678-{
2679- FILE *file = 0;
2680-
2681- foreach_dirinpath (search_path, base_name, find_file_callback, pdir, &file);
2682-
2683- return file;
2684-}
2685-
2686-static int
2687-find_handle_callback (
2688- char *filename,
2689- lt_ptr data,
2690- lt_ptr ignored)
2691-{
2692- lt_dlhandle *handle = (lt_dlhandle *) data;
2693- int notfound = access (filename, R_OK);
2694-
2695- /* Bail out if file cannot be read... */
2696- if (notfound)
2697- return 0;
2698-
2699- /* Try to dlopen the file, but do not continue searching in any
2700- case. */
2701- if (tryall_dlopen (handle, filename) != 0)
2702- *handle = 0;
2703-
2704- return 1;
2705-}
2706-
2707-/* If HANDLE was found return it, otherwise return 0. If HANDLE was
2708- found but could not be opened, *HANDLE will be set to 0. */
2709-static lt_dlhandle *
2710-find_handle (
2711- const char *search_path,
2712- const char *base_name,
2713- lt_dlhandle *handle)
2714-{
2715- if (!search_path)
2716- return 0;
2717-
2718- if (!foreach_dirinpath (search_path, base_name, find_handle_callback,
2719- handle, 0))
2720- return 0;
2721-
2722- return handle;
2723-}
2724-
2725-static int
2726-load_deplibs (
2727- lt_dlhandle handle,
2728- char *deplibs)
2729-{
2730-#if LTDL_DLOPEN_DEPLIBS
2731- char *p, *save_search_path = 0;
2732- int depcount = 0;
2733- int i;
2734- char **names = 0;
2735-#endif
2736- int errors = 0;
2737-
2738- handle->depcount = 0;
2739-
2740-#if LTDL_DLOPEN_DEPLIBS
2741- if (!deplibs)
2742- {
2743- return errors;
2744- }
2745- ++errors;
2746-
2747- LT_DLMUTEX_LOCK ();
2748- if (user_search_path)
2749- {
2750- save_search_path = lt_estrdup (user_search_path);
2751- if (!save_search_path)
2752- goto cleanup;
2753- }
2754-
2755- /* extract search paths and count deplibs */
2756- p = deplibs;
2757- while (*p)
2758- {
2759- if (!isspace ((int) *p))
2760- {
2761- char *end = p+1;
2762- while (*end && !isspace((int) *end))
2763- {
2764- ++end;
2765- }
2766-
2767- if (strncmp(p, "-L", 2) == 0 || strncmp(p, "-R", 2) == 0)
2768- {
2769- char save = *end;
2770- *end = 0; /* set a temporary string terminator */
2771- if (lt_dladdsearchdir(p+2))
2772- {
2773- goto cleanup;
2774- }
2775- *end = save;
2776- }
2777- else
2778- {
2779- ++depcount;
2780- }
2781-
2782- p = end;
2783- }
2784- else
2785- {
2786- ++p;
2787- }
2788- }
2789-
2790- /* restore the old search path */
2791- LT_DLFREE (user_search_path);
2792- user_search_path = save_search_path;
2793-
2794- LT_DLMUTEX_UNLOCK ();
2795-
2796- if (!depcount)
2797- {
2798- errors = 0;
2799- goto cleanup;
2800- }
2801-
2802- names = LT_EMALLOC (char *, depcount * sizeof (char*));
2803- if (!names)
2804- goto cleanup;
2805-
2806- /* now only extract the actual deplibs */
2807- depcount = 0;
2808- p = deplibs;
2809- while (*p)
2810- {
2811- if (isspace ((int) *p))
2812- {
2813- ++p;
2814- }
2815- else
2816- {
2817- char *end = p+1;
2818- while (*end && !isspace ((int) *end))
2819- {
2820- ++end;
2821- }
2822-
2823- if (strncmp(p, "-L", 2) != 0 && strncmp(p, "-R", 2) != 0)
2824- {
2825- char *name;
2826- char save = *end;
2827- *end = 0; /* set a temporary string terminator */
2828- if (strncmp(p, "-l", 2) == 0)
2829- {
2830- size_t name_len = 3+ /* "lib" */ LT_STRLEN (p + 2);
2831- name = LT_EMALLOC (char, 1+ name_len);
2832- if (name)
2833- sprintf (name, "lib%s", p+2);
2834- }
2835- else
2836- name = lt_estrdup(p);
2837-
2838- if (!name)
2839- goto cleanup_names;
2840-
2841- names[depcount++] = name;
2842- *end = save;
2843- }
2844- p = end;
2845- }
2846- }
2847-
2848- /* load the deplibs (in reverse order)
2849- At this stage, don't worry if the deplibs do not load correctly,
2850- they may already be statically linked into the loading application
2851- for instance. There will be a more enlightening error message
2852- later on if the loaded module cannot resolve all of its symbols. */
2853- if (depcount)
2854- {
2855- int j = 0;
2856-
2857- handle->deplibs = (lt_dlhandle*) LT_EMALLOC (lt_dlhandle *, depcount);
2858- if (!handle->deplibs)
2859- goto cleanup;
2860-
2861- for (i = 0; i < depcount; ++i)
2862- {
2863- handle->deplibs[j] = lt_dlopenext(names[depcount-1-i]);
2864- if (handle->deplibs[j])
2865- {
2866- ++j;
2867- }
2868- }
2869-
2870- handle->depcount = j; /* Number of successfully loaded deplibs */
2871- errors = 0;
2872- }
2873-
2874- cleanup_names:
2875- for (i = 0; i < depcount; ++i)
2876- {
2877- LT_DLFREE (names[i]);
2878- }
2879-
2880- cleanup:
2881- LT_DLFREE (names);
2882-#endif
2883-
2884- return errors;
2885-}
2886-
2887-static int
2888-unload_deplibs (
2889- lt_dlhandle handle)
2890-{
2891- int i;
2892- int errors = 0;
2893-
2894- if (handle->depcount)
2895- {
2896- for (i = 0; i < handle->depcount; ++i)
2897- {
2898- if (!LT_DLIS_RESIDENT (handle->deplibs[i]))
2899- {
2900- errors += lt_dlclose (handle->deplibs[i]);
2901- }
2902- }
2903- }
2904-
2905- return errors;
2906-}
2907-
2908-static int
2909-trim (
2910- char **dest,
2911- const char *str)
2912-{
2913- /* remove the leading and trailing "'" from str
2914- and store the result in dest */
2915- const char *end = strrchr (str, '\'');
2916- size_t len = LT_STRLEN (str);
2917- char *tmp;
2918-
2919- LT_DLFREE (*dest);
2920-
2921- if (len > 3 && str[0] == '\'')
2922- {
2923- tmp = LT_EMALLOC (char, end - str);
2924- if (!tmp)
2925- return 1;
2926-
2927- strncpy(tmp, &str[1], (end - str) - 1);
2928- tmp[len-3] = LT_EOS_CHAR;
2929- *dest = tmp;
2930- }
2931- else
2932- {
2933- *dest = 0;
2934- }
2935-
2936- return 0;
2937-}
2938-
2939-static int
2940-free_vars (
2941- char *dlname,
2942- char *oldname,
2943- char *libdir,
2944- char *deplibs)
2945-{
2946- LT_DLFREE (dlname);
2947- LT_DLFREE (oldname);
2948- LT_DLFREE (libdir);
2949- LT_DLFREE (deplibs);
2950-
2951- return 0;
2952-}
2953-
2954-static int
2955-try_dlopen (
2956- lt_dlhandle *phandle,
2957- const char *filename)
2958-{
2959- const char * ext = 0;
2960- const char * saved_error = 0;
2961- char * canonical = 0;
2962- char * base_name = 0;
2963- char * dir = 0;
2964- char * name = 0;
2965- int errors = 0;
2966- lt_dlhandle newhandle;
2967-
2968- assert (phandle);
2969- assert (*phandle == 0);
2970-
2971- LT_DLMUTEX_GETERROR (saved_error);
2972-
2973- /* dlopen self? */
2974- if (!filename)
2975- {
2976- *phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1);
2977- if (*phandle == 0)
2978- return 1;
2979-
2980- memset (*phandle, 0, sizeof(struct lt_dlhandle_struct));
2981- newhandle = *phandle;
2982-
2983- /* lt_dlclose()ing yourself is very bad! Disallow it. */
2984- LT_DLSET_FLAG (*phandle, LT_DLRESIDENT_FLAG);
2985-
2986- if (tryall_dlopen (&newhandle, 0) != 0)
2987- {
2988- LT_DLFREE (*phandle);
2989- return 1;
2990- }
2991-
2992- goto register_handle;
2993- }
2994-
2995- assert (filename && *filename);
2996-
2997- /* Doing this immediately allows internal functions to safely
2998- assume only canonicalized paths are passed. */
2999- if (canonicalize_path (filename, &canonical) != 0)
3000- {
3001- ++errors;
3002- goto cleanup;
3003- }
3004-
3005- /* If the canonical module name is a path (relative or absolute)
3006- then split it into a directory part and a name part. */
3007- base_name = strrchr (canonical, '/');
3008- if (base_name)
3009- {
3010- size_t dirlen = (1+ base_name) - canonical;
3011-
3012- dir = LT_EMALLOC (char, 1+ dirlen);
3013- if (!dir)
3014- {
3015- ++errors;
3016- goto cleanup;
3017- }
3018-
3019- strncpy (dir, canonical, dirlen);
3020- dir[dirlen] = LT_EOS_CHAR;
3021-
3022- ++base_name;
3023- }
3024- else
3025- LT_DLMEM_REASSIGN (base_name, canonical);
3026-
3027- assert (base_name && *base_name);
3028-
3029- /* Check whether we are opening a libtool module (.la extension). */
3030- ext = strrchr (base_name, '.');
3031- if (ext && strcmp (ext, archive_ext) == 0)
3032- {
3033- /* this seems to be a libtool module */
3034- FILE * file = 0;
3035- char * dlname = 0;
3036- char * old_name = 0;
3037- char * libdir = 0;
3038- char * deplibs = 0;
3039- char * line = 0;
3040- size_t line_len;
3041-
3042- /* if we can't find the installed flag, it is probably an
3043- installed libtool archive, produced with an old version
3044- of libtool */
3045- int installed = 1;
3046-
3047- /* extract the module name from the file name */
3048- name = LT_EMALLOC (char, ext - base_name + 1);
3049- if (!name)
3050- {
3051- ++errors;
3052- goto cleanup;
3053- }
3054-
3055- /* canonicalize the module name */
3056- {
3057- size_t i;
3058- for (i = 0; i < ext - base_name; ++i)
3059- {
3060- if (isalnum ((int)(base_name[i])))
3061- {
3062- name[i] = base_name[i];
3063- }
3064- else
3065- {
3066- name[i] = '_';
3067- }
3068- }
3069- name[ext - base_name] = LT_EOS_CHAR;
3070- }
3071-
3072- /* Now try to open the .la file. If there is no directory name
3073- component, try to find it first in user_search_path and then other
3074- prescribed paths. Otherwise (or in any case if the module was not
3075- yet found) try opening just the module name as passed. */
3076- if (!dir)
3077- {
3078- const char *search_path;
3079-
3080- LT_DLMUTEX_LOCK ();
3081- search_path = user_search_path;
3082- if (search_path)
3083- file = find_file (user_search_path, base_name, &dir);
3084- LT_DLMUTEX_UNLOCK ();
3085-
3086- if (!file)
3087- {
3088- search_path = getenv (LTDL_SEARCHPATH_VAR);
3089- if (search_path)
3090- file = find_file (search_path, base_name, &dir);
3091- }
3092-
3093-#ifdef LTDL_SHLIBPATH_VAR
3094- if (!file)
3095- {
3096- search_path = getenv (LTDL_SHLIBPATH_VAR);
3097- if (search_path)
3098- file = find_file (search_path, base_name, &dir);
3099- }
3100-#endif
3101-#ifdef LTDL_SYSSEARCHPATH
3102- if (!file && sys_search_path)
3103- {
3104- file = find_file (sys_search_path, base_name, &dir);
3105- }
3106-#endif
3107- }
3108- if (!file)
3109- {
3110- file = fopen (filename, LT_READTEXT_MODE);
3111- }
3112-
3113- /* If we didn't find the file by now, it really isn't there. Set
3114- the status flag, and bail out. */
3115- if (!file)
3116- {
3117- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND));
3118- ++errors;
3119- goto cleanup;
3120- }
3121-
3122- line_len = LT_FILENAME_MAX;
3123- line = LT_EMALLOC (char, line_len);
3124- if (!line)
3125- {
3126- fclose (file);
3127- ++errors;
3128- goto cleanup;
3129- }
3130-
3131- /* read the .la file */
3132- while (!feof (file))
3133- {
3134- if (!fgets (line, (int) line_len, file))
3135- {
3136- break;
3137- }
3138-
3139- /* Handle the case where we occasionally need to read a line
3140- that is longer than the initial buffer size. */
3141- while ((line[LT_STRLEN(line) -1] != '\n') && (!feof (file)))
3142- {
3143- line = LT_DLREALLOC (char, line, line_len *2);
3144- if (!fgets (&line[line_len -1], (int) line_len +1, file))
3145- {
3146- break;
3147- }
3148- line_len *= 2;
3149- }
3150-
3151- if (line[0] == '\n' || line[0] == '#')
3152- {
3153- continue;
3154- }
3155-
3156-#undef STR_DLNAME
3157-#define STR_DLNAME "dlname="
3158- if (strncmp (line, STR_DLNAME, sizeof (STR_DLNAME) - 1) == 0)
3159- {
3160- errors += trim (&dlname, &line[sizeof (STR_DLNAME) - 1]);
3161- }
3162-
3163-#undef STR_OLD_LIBRARY
3164-#define STR_OLD_LIBRARY "old_library="
3165- else if (strncmp (line, STR_OLD_LIBRARY,
3166- sizeof (STR_OLD_LIBRARY) - 1) == 0)
3167- {
3168- errors += trim (&old_name, &line[sizeof (STR_OLD_LIBRARY) - 1]);
3169- }
3170-#undef STR_LIBDIR
3171-#define STR_LIBDIR "libdir="
3172- else if (strncmp (line, STR_LIBDIR, sizeof (STR_LIBDIR) - 1) == 0)
3173- {
3174- errors += trim (&libdir, &line[sizeof(STR_LIBDIR) - 1]);
3175- }
3176-
3177-#undef STR_DL_DEPLIBS
3178-#define STR_DL_DEPLIBS "dependency_libs="
3179- else if (strncmp (line, STR_DL_DEPLIBS,
3180- sizeof (STR_DL_DEPLIBS) - 1) == 0)
3181- {
3182- errors += trim (&deplibs, &line[sizeof (STR_DL_DEPLIBS) - 1]);
3183- }
3184- else if (strcmp (line, "installed=yes\n") == 0)
3185- {
3186- installed = 1;
3187- }
3188- else if (strcmp (line, "installed=no\n") == 0)
3189- {
3190- installed = 0;
3191- }
3192-
3193-#undef STR_LIBRARY_NAMES
3194-#define STR_LIBRARY_NAMES "library_names="
3195- else if (! dlname && strncmp (line, STR_LIBRARY_NAMES,
3196- sizeof (STR_LIBRARY_NAMES) - 1) == 0)
3197- {
3198- char *last_libname;
3199- errors += trim (&dlname, &line[sizeof (STR_LIBRARY_NAMES) - 1]);
3200- if (!errors
3201- && dlname
3202- && (last_libname = strrchr (dlname, ' ')) != 0)
3203- {
3204- last_libname = lt_estrdup (last_libname + 1);
3205- if (!last_libname)
3206- {
3207- ++errors;
3208- goto cleanup;
3209- }
3210- LT_DLMEM_REASSIGN (dlname, last_libname);
3211- }
3212- }
3213-
3214- if (errors)
3215- break;
3216- }
3217-
3218- fclose (file);
3219- LT_DLFREE (line);
3220-
3221- /* allocate the handle */
3222- *phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1);
3223- if (*phandle == 0)
3224- ++errors;
3225-
3226- if (errors)
3227- {
3228- free_vars (dlname, old_name, libdir, deplibs);
3229- LT_DLFREE (*phandle);
3230- goto cleanup;
3231- }
3232-
3233- assert (*phandle);
3234-
3235- memset (*phandle, 0, sizeof(struct lt_dlhandle_struct));
3236- if (load_deplibs (*phandle, deplibs) == 0)
3237- {
3238- newhandle = *phandle;
3239- /* find_module may replace newhandle */
3240- if (find_module (&newhandle, dir, libdir, dlname, old_name, installed))
3241- {
3242- unload_deplibs (*phandle);
3243- ++errors;
3244- }
3245- }
3246- else
3247- {
3248- ++errors;
3249- }
3250-
3251- free_vars (dlname, old_name, libdir, deplibs);
3252- if (errors)
3253- {
3254- LT_DLFREE (*phandle);
3255- goto cleanup;
3256- }
3257-
3258- if (*phandle != newhandle)
3259- {
3260- unload_deplibs (*phandle);
3261- }
3262- }
3263- else
3264- {
3265- /* not a libtool module */
3266- *phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1);
3267- if (*phandle == 0)
3268- {
3269- ++errors;
3270- goto cleanup;
3271- }
3272-
3273- memset (*phandle, 0, sizeof (struct lt_dlhandle_struct));
3274- newhandle = *phandle;
3275-
3276- /* If the module has no directory name component, try to find it
3277- first in user_search_path and then other prescribed paths.
3278- Otherwise (or in any case if the module was not yet found) try
3279- opening just the module name as passed. */
3280- if ((dir || (!find_handle (user_search_path, base_name, &newhandle)
3281- && !find_handle (getenv (LTDL_SEARCHPATH_VAR), base_name,
3282- &newhandle)
3283-#ifdef LTDL_SHLIBPATH_VAR
3284- && !find_handle (getenv (LTDL_SHLIBPATH_VAR), base_name,
3285- &newhandle)
3286-#endif
3287-#ifdef LTDL_SYSSEARCHPATH
3288- && !find_handle (sys_search_path, base_name, &newhandle)
3289-#endif
3290- )))
3291- {
3292- if (tryall_dlopen (&newhandle, filename) != 0)
3293- {
3294- newhandle = NULL;
3295- }
3296- }
3297-
3298- if (!newhandle)
3299- {
3300- LT_DLFREE (*phandle);
3301- ++errors;
3302- goto cleanup;
3303- }
3304- }
3305-
3306- register_handle:
3307- LT_DLMEM_REASSIGN (*phandle, newhandle);
3308-
3309- if ((*phandle)->info.ref_count == 0)
3310- {
3311- (*phandle)->info.ref_count = 1;
3312- LT_DLMEM_REASSIGN ((*phandle)->info.name, name);
3313-
3314- LT_DLMUTEX_LOCK ();
3315- (*phandle)->next = handles;
3316- handles = *phandle;
3317- LT_DLMUTEX_UNLOCK ();
3318- }
3319-
3320- LT_DLMUTEX_SETERROR (saved_error);
3321-
3322- cleanup:
3323- LT_DLFREE (dir);
3324- LT_DLFREE (name);
3325- LT_DLFREE (canonical);
3326-
3327- return errors;
3328-}
3329-
3330-lt_dlhandle
3331-lt_dlopen (
3332- const char *filename)
3333-{
3334- lt_dlhandle handle = 0;
3335-
3336- /* Just incase we missed a code path in try_dlopen() that reports
3337- an error, but forgets to reset handle... */
3338- if (try_dlopen (&handle, filename) != 0)
3339- return 0;
3340-
3341- return handle;
3342-}
3343-
3344-/* If the last error messge store was `FILE_NOT_FOUND', then return
3345- non-zero. */
3346-static int
3347-file_not_found ()
3348-{
3349- const char *error = 0;
3350-
3351- LT_DLMUTEX_GETERROR (error);
3352- if (error == LT_DLSTRERROR (FILE_NOT_FOUND))
3353- return 1;
3354-
3355- return 0;
3356-}
3357-
3358-/* If FILENAME has an ARCHIVE_EXT or SHLIB_EXT extension, try to
3359- open the FILENAME as passed. Otherwise try appending ARCHIVE_EXT,
3360- and if a file is still not found try again with SHLIB_EXT appended
3361- instead. */
3362-lt_dlhandle
3363-lt_dlopenext (
3364- const char *filename)
3365-{
3366- lt_dlhandle handle = 0;
3367- char * tmp = 0;
3368- char * ext = 0;
3369- size_t len;
3370- int errors = 0;
3371-
3372- if (!filename)
3373- {
3374- return lt_dlopen (filename);
3375- }
3376-
3377- assert (filename);
3378-
3379- len = LT_STRLEN (filename);
3380- ext = strrchr (filename, '.');
3381-
3382- /* If FILENAME already bears a suitable extension, there is no need
3383- to try appending additional extensions. */
3384- if (ext && ((strcmp (ext, archive_ext) == 0)
3385-#ifdef LTDL_SHLIB_EXT
3386- || (strcmp (ext, shlib_ext) == 0)
3387-#endif
3388- ))
3389- {
3390- return lt_dlopen (filename);
3391- }
3392-
3393- /* First try appending ARCHIVE_EXT. */
3394- tmp = LT_EMALLOC (char, len + LT_STRLEN (archive_ext) + 1);
3395- if (!tmp)
3396- return 0;
3397-
3398- strcpy (tmp, filename);
3399- strcat (tmp, archive_ext);
3400- errors = try_dlopen (&handle, tmp);
3401-
3402- /* If we found FILENAME, stop searching -- whether we were able to
3403- load the file as a module or not. If the file exists but loading
3404- failed, it is better to return an error message here than to
3405- report FILE_NOT_FOUND when the alternatives (foo.so etc) are not
3406- in the module search path. */
3407- if (handle || ((errors > 0) && !file_not_found ()))
3408- {
3409- LT_DLFREE (tmp);
3410- return handle;
3411- }
3412-
3413-#ifdef LTDL_SHLIB_EXT
3414- /* Try appending SHLIB_EXT. */
3415- if (LT_STRLEN (shlib_ext) > LT_STRLEN (archive_ext))
3416- {
3417- LT_DLFREE (tmp);
3418- tmp = LT_EMALLOC (char, len + LT_STRLEN (shlib_ext) + 1);
3419- if (!tmp)
3420- return 0;
3421-
3422- strcpy (tmp, filename);
3423- }
3424- else
3425- {
3426- tmp[len] = LT_EOS_CHAR;
3427- }
3428-
3429- strcat(tmp, shlib_ext);
3430- errors = try_dlopen (&handle, tmp);
3431-
3432- /* As before, if the file was found but loading failed, return now
3433- with the current error message. */
3434- if (handle || ((errors > 0) && !file_not_found ()))
3435- {
3436- LT_DLFREE (tmp);
3437- return handle;
3438- }
3439-#endif
3440-
3441- /* Still here? Then we really did fail to locate any of the file
3442- names we tried. */
3443- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND));
3444- LT_DLFREE (tmp);
3445- return 0;
3446-}
3447-
3448-
3449-static int
3450-lt_argz_insert (
3451- char **pargz,
3452- size_t *pargz_len,
3453- char *before,
3454- const char *entry)
3455-{
3456- error_t error;
3457-
3458- if ((error = argz_insert (pargz, pargz_len, before, entry)))
3459- {
3460- switch (error)
3461- {
3462- case ENOMEM:
3463- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY));
3464- break;
3465- default:
3466- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (UNKNOWN));
3467- break;
3468- }
3469- return 1;
3470- }
3471-
3472- return 0;
3473-}
3474-
3475-static int
3476-lt_argz_insertinorder (
3477- char **pargz,
3478- size_t *pargz_len,
3479- const char *entry)
3480-{
3481- char *before = 0;
3482-
3483- assert (pargz);
3484- assert (pargz_len);
3485- assert (entry && *entry);
3486-
3487- if (*pargz)
3488- while ((before = argz_next (*pargz, *pargz_len, before)))
3489- {
3490- int cmp = strcmp (entry, before);
3491-
3492- if (cmp < 0) break;
3493- if (cmp == 0) return 0; /* No duplicates! */
3494- }
3495-
3496- return lt_argz_insert (pargz, pargz_len, before, entry);
3497-}
3498-
3499-static int
3500-lt_argz_insertdir (
3501- char **pargz,
3502- size_t *pargz_len,
3503- const char *dirnam,
3504- struct dirent *dp)
3505-{
3506- char *buf = 0;
3507- size_t buf_len = 0;
3508- char *end = 0;
3509- size_t end_offset = 0;
3510- size_t dir_len = 0;
3511- int errors = 0;
3512-
3513- assert (pargz);
3514- assert (pargz_len);
3515- assert (dp);
3516-
3517- dir_len = LT_STRLEN (dirnam);
3518- end = dp->d_name + LT_D_NAMLEN(dp);
3519-
3520- /* Ignore version numbers. */
3521- {
3522- char *p;
3523- for (p = end; p -1 > dp->d_name; --p)
3524- if (strchr (".0123456789", p[-1]) == 0)
3525- break;
3526-
3527- if (*p == '.')
3528- end = p;
3529- }
3530-
3531- /* Ignore filename extension. */
3532- {
3533- char *p;
3534- for (p = end -1; p > dp->d_name; --p)
3535- if (*p == '.')
3536- {
3537- end = p;
3538- break;
3539- }
3540- }
3541-
3542- /* Prepend the directory name. */
3543- end_offset = end - dp->d_name;
3544- buf_len = dir_len + 1+ end_offset;
3545- buf = LT_EMALLOC (char, 1+ buf_len);
3546- if (!buf)
3547- return ++errors;
3548-
3549- assert (buf);
3550-
3551- strcpy (buf, dirnam);
3552- strcat (buf, "/");
3553- strncat (buf, dp->d_name, end_offset);
3554- buf[buf_len] = LT_EOS_CHAR;
3555-
3556- /* Try to insert (in order) into ARGZ/ARGZ_LEN. */
3557- if (lt_argz_insertinorder (pargz, pargz_len, buf) != 0)
3558- ++errors;
3559-
3560- LT_DLFREE (buf);
3561-
3562- return errors;
3563-}
3564-
3565-static int
3566-list_files_by_dir (
3567- const char *dirnam,
3568- char **pargz,
3569- size_t *pargz_len)
3570-{
3571- DIR *dirp = 0;
3572- int errors = 0;
3573-
3574- assert (dirnam && *dirnam);
3575- assert (pargz);
3576- assert (pargz_len);
3577- assert (dirnam[LT_STRLEN(dirnam) -1] != '/');
3578-
3579- dirp = opendir (dirnam);
3580- if (dirp)
3581- {
3582- struct dirent *dp = 0;
3583-
3584- while ((dp = readdir (dirp)))
3585- if (dp->d_name[0] != '.')
3586- if (lt_argz_insertdir (pargz, pargz_len, dirnam, dp))
3587- {
3588- ++errors;
3589- break;
3590- }
3591-
3592- closedir (dirp);
3593- }
3594- else
3595- ++errors;
3596-
3597- return errors;
3598-}
3599-
3600-
3601-/* If there are any files in DIRNAME, call the function passed in
3602- DATA1 (with the name of each file and DATA2 as arguments). */
3603-static int
3604-foreachfile_callback (
3605- char *dirname,
3606- lt_ptr data1,
3607- lt_ptr data2)
3608-{
3609- int (*func) LT_PARAMS((const char *filename, lt_ptr data))
3610- = (int (*) LT_PARAMS((const char *filename, lt_ptr data))) data1;
3611-
3612- int is_done = 0;
3613- char *argz = 0;
3614- size_t argz_len = 0;
3615-
3616- if (list_files_by_dir (dirname, &argz, &argz_len) != 0)
3617- goto cleanup;
3618- if (!argz)
3619- goto cleanup;
3620-
3621- {
3622- char *filename = 0;
3623- while ((filename = argz_next (argz, argz_len, filename)))
3624- if ((is_done = (*func) (filename, data2)))
3625- break;
3626- }
3627-
3628- cleanup:
3629- LT_DLFREE (argz);
3630-
3631- return is_done;
3632-}
3633-
3634-
3635-/* Call FUNC for each unique extensionless file in SEARCH_PATH, along
3636- with DATA. The filenames passed to FUNC would be suitable for
3637- passing to lt_dlopenext. The extensions are stripped so that
3638- individual modules do not generate several entries (e.g. libfoo.la,
3639- libfoo.so, libfoo.so.1, libfoo.so.1.0.0). If SEARCH_PATH is NULL,
3640- then the same directories that lt_dlopen would search are examined. */
3641-int
3642-lt_dlforeachfile (
3643- const char *search_path,
3644- int (*func) LT_PARAMS ((const char *filename, lt_ptr data)),
3645- lt_ptr data)
3646-{
3647- int is_done = 0;
3648-
3649- if (search_path)
3650- {
3651- /* If a specific path was passed, search only the directories
3652- listed in it. */
3653- is_done = foreach_dirinpath (search_path, 0,
3654- foreachfile_callback, (void*)func, data);
3655- }
3656- else
3657- {
3658- /* Otherwise search the default paths. */
3659- is_done = foreach_dirinpath (user_search_path, 0,
3660- foreachfile_callback, (void*)func, data);
3661- if (!is_done)
3662- {
3663- is_done = foreach_dirinpath (getenv("LTDL_LIBRARY_PATH"), 0,
3664- foreachfile_callback, (void*)func, data);
3665- }
3666-
3667-#ifdef LTDL_SHLIBPATH_VAR
3668- if (!is_done)
3669- {
3670- is_done = foreach_dirinpath (getenv(LTDL_SHLIBPATH_VAR), 0,
3671- foreachfile_callback, (void*)func, data);
3672- }
3673-#endif
3674-#ifdef LTDL_SYSSEARCHPATH
3675- if (!is_done)
3676- {
3677- is_done = foreach_dirinpath (getenv(LTDL_SYSSEARCHPATH), 0,
3678- foreachfile_callback, (void*)func, data);
3679- }
3680-#endif
3681- }
3682-
3683- return is_done;
3684-}
3685-
3686-int
3687-lt_dlclose (
3688- lt_dlhandle handle)
3689-{
3690- lt_dlhandle cur, last;
3691- int errors = 0;
3692-
3693- LT_DLMUTEX_LOCK ();
3694-
3695- /* check whether the handle is valid */
3696- last = cur = handles;
3697- while (cur && handle != cur)
3698- {
3699- last = cur;
3700- cur = cur->next;
3701- }
3702-
3703- if (!cur)
3704- {
3705- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE));
3706- ++errors;
3707- goto done;
3708- }
3709-
3710- handle->info.ref_count--;
3711-
3712- /* Note that even with resident modules, we must track the ref_count
3713- correctly incase the user decides to reset the residency flag
3714- later (even though the API makes no provision for that at the
3715- moment). */
3716- if (handle->info.ref_count <= 0 && !LT_DLIS_RESIDENT (handle))
3717- {
3718- lt_user_data data = handle->loader->dlloader_data;
3719-
3720- if (handle != handles)
3721- {
3722- last->next = handle->next;
3723- }
3724- else
3725- {
3726- handles = handle->next;
3727- }
3728-
3729- errors += handle->loader->module_close (data, handle->module);
3730- errors += unload_deplibs(handle);
3731-
3732- /* It is up to the callers to free the data itself. */
3733- LT_DLFREE (handle->caller_data);
3734-
3735- LT_DLFREE (handle->info.filename);
3736- LT_DLFREE (handle->info.name);
3737- LT_DLFREE (handle);
3738-
3739- goto done;
3740- }
3741-
3742- if (LT_DLIS_RESIDENT (handle))
3743- {
3744- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CLOSE_RESIDENT_MODULE));
3745- ++errors;
3746- }
3747-
3748- done:
3749- LT_DLMUTEX_UNLOCK ();
3750-
3751- return errors;
3752-}
3753-
3754-lt_ptr
3755-lt_dlsym (
3756- lt_dlhandle handle,
3757- const char *symbol)
3758-{
3759- size_t lensym;
3760- char lsym[LT_SYMBOL_LENGTH];
3761- char *sym;
3762- lt_ptr address;
3763- lt_user_data data;
3764-
3765- if (!handle)
3766- {
3767- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE));
3768- return 0;
3769- }
3770-
3771- if (!symbol)
3772- {
3773- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND));
3774- return 0;
3775- }
3776-
3777- lensym = LT_STRLEN (symbol) + LT_STRLEN (handle->loader->sym_prefix)
3778- + LT_STRLEN (handle->info.name);
3779-
3780- if (lensym + LT_SYMBOL_OVERHEAD < LT_SYMBOL_LENGTH)
3781- {
3782- sym = lsym;
3783- }
3784- else
3785- {
3786- sym = LT_EMALLOC (char, lensym + LT_SYMBOL_OVERHEAD + 1);
3787- if (!sym)
3788- {
3789- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (BUFFER_OVERFLOW));
3790- return 0;
3791- }
3792- }
3793-
3794- data = handle->loader->dlloader_data;
3795- if (handle->info.name)
3796- {
3797- const char *saved_error;
3798-
3799- LT_DLMUTEX_GETERROR (saved_error);
3800-
3801- /* this is a libtool module */
3802- if (handle->loader->sym_prefix)
3803- {
3804- strcpy(sym, handle->loader->sym_prefix);
3805- strcat(sym, handle->info.name);
3806- }
3807- else
3808- {
3809- strcpy(sym, handle->info.name);
3810- }
3811-
3812- strcat(sym, "_LTX_");
3813- strcat(sym, symbol);
3814-
3815- /* try "modulename_LTX_symbol" */
3816- address = handle->loader->find_sym (data, handle->module, sym);
3817- if (address)
3818- {
3819- if (sym != lsym)
3820- {
3821- LT_DLFREE (sym);
3822- }
3823- return address;
3824- }
3825- LT_DLMUTEX_SETERROR (saved_error);
3826- }
3827-
3828- /* otherwise try "symbol" */
3829- if (handle->loader->sym_prefix)
3830- {
3831- strcpy(sym, handle->loader->sym_prefix);
3832- strcat(sym, symbol);
3833- }
3834- else
3835- {
3836- strcpy(sym, symbol);
3837- }
3838-
3839- address = handle->loader->find_sym (data, handle->module, sym);
3840- if (sym != lsym)
3841- {
3842- LT_DLFREE (sym);
3843- }
3844-
3845- return address;
3846-}
3847-
3848-const char *
3849-lt_dlerror ()
3850-{
3851- const char *error;
3852-
3853- LT_DLMUTEX_GETERROR (error);
3854- LT_DLMUTEX_SETERROR (0);
3855-
3856- return error ? error : NULL;
3857-}
3858-
3859-static int
3860-lt_dlpath_insertdir (
3861- char **ppath,
3862- char *before,
3863- const char *dir)
3864-{
3865- int errors = 0;
3866- char *canonical = 0;
3867- char *argz = 0;
3868- size_t argz_len = 0;
3869-
3870- assert (ppath);
3871- assert (dir && *dir);
3872-
3873- if (canonicalize_path (dir, &canonical) != 0)
3874- {
3875- ++errors;
3876- goto cleanup;
3877- }
3878-
3879- assert (canonical && *canonical);
3880-
3881- /* If *PPATH is empty, set it to DIR. */
3882- if (*ppath == 0)
3883- {
3884- assert (!before); /* BEFORE cannot be set without PPATH. */
3885- assert (dir); /* Without DIR, don't call this function! */
3886-
3887- *ppath = lt_estrdup (dir);
3888- if (*ppath == 0)
3889- ++errors;
3890-
3891- return errors;
3892- }
3893-
3894- assert (ppath && *ppath);
3895-
3896- if (argzize_path (*ppath, &argz, &argz_len) != 0)
3897- {
3898- ++errors;
3899- goto cleanup;
3900- }
3901-
3902- /* Convert BEFORE into an equivalent offset into ARGZ. This only works
3903- if *PPATH is already canonicalized, and hence does not change length
3904- with respect to ARGZ. We canonicalize each entry as it is added to
3905- the search path, and don't call this function with (uncanonicalized)
3906- user paths, so this is a fair assumption. */
3907- if (before)
3908- {
3909- assert (*ppath <= before);
3910- assert (before - *ppath <= strlen (*ppath));
3911-
3912- before = before - *ppath + argz;
3913- }
3914-
3915- if (lt_argz_insert (&argz, &argz_len, before, dir) != 0)
3916- {
3917- ++errors;
3918- goto cleanup;
3919- }
3920-
3921- argz_stringify (argz, argz_len, LT_PATHSEP_CHAR);
3922- LT_DLMEM_REASSIGN (*ppath, argz);
3923-
3924- cleanup:
3925- LT_DLFREE (canonical);
3926- LT_DLFREE (argz);
3927-
3928- return errors;
3929-}
3930-
3931-int
3932-lt_dladdsearchdir (
3933- const char *search_dir)
3934-{
3935- int errors = 0;
3936-
3937- if (search_dir && *search_dir)
3938- {
3939- LT_DLMUTEX_LOCK ();
3940- if (lt_dlpath_insertdir (&user_search_path, 0, search_dir) != 0)
3941- ++errors;
3942- LT_DLMUTEX_UNLOCK ();
3943- }
3944-
3945- return errors;
3946-}
3947-
3948-int
3949-lt_dlinsertsearchdir (
3950- const char *before,
3951- const char *search_dir)
3952-{
3953- int errors = 0;
3954-
3955- if (before)
3956- {
3957- LT_DLMUTEX_LOCK ();
3958- if ((before < user_search_path)
3959- || (before >= user_search_path + LT_STRLEN (user_search_path)))
3960- {
3961- LT_DLMUTEX_UNLOCK ();
3962- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_POSITION));
3963- return 1;
3964- }
3965- LT_DLMUTEX_UNLOCK ();
3966- }
3967-
3968- if (search_dir && *search_dir)
3969- {
3970- LT_DLMUTEX_LOCK ();
3971- if (lt_dlpath_insertdir (&user_search_path,
3972- (char *) before, search_dir) != 0)
3973- {
3974- ++errors;
3975- }
3976- LT_DLMUTEX_UNLOCK ();
3977- }
3978-
3979- return errors;
3980-}
3981-
3982-int
3983-lt_dlsetsearchpath (
3984- const char *search_path)
3985-{
3986- int errors = 0;
3987-
3988- LT_DLMUTEX_LOCK ();
3989- LT_DLFREE (user_search_path);
3990- LT_DLMUTEX_UNLOCK ();
3991-
3992- if (!search_path || !LT_STRLEN (search_path))
3993- {
3994- return errors;
3995- }
3996-
3997- LT_DLMUTEX_LOCK ();
3998- if (canonicalize_path (search_path, &user_search_path) != 0)
3999- ++errors;
4000- LT_DLMUTEX_UNLOCK ();
4001-
4002- return errors;
4003-}
4004-
4005-const char *
4006-lt_dlgetsearchpath ()
4007-{
4008- const char *saved_path;
4009-
4010- LT_DLMUTEX_LOCK ();
4011- saved_path = user_search_path;
4012- LT_DLMUTEX_UNLOCK ();
4013-
4014- return saved_path;
4015-}
4016-
4017-int
4018-lt_dlmakeresident (
4019- lt_dlhandle handle)
4020-{
4021- int errors = 0;
4022-
4023- if (!handle)
4024- {
4025- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE));
4026- ++errors;
4027- }
4028- else
4029- {
4030- LT_DLSET_FLAG (handle, LT_DLRESIDENT_FLAG);
4031- }
4032-
4033- return errors;
4034-}
4035-
4036-int
4037-lt_dlisresident (
4038- lt_dlhandle handle)
4039-{
4040- if (!handle)
4041- {
4042- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE));
4043- return -1;
4044- }
4045-
4046- return LT_DLIS_RESIDENT (handle);
4047-}
4048-
4049-
4050-
4051-\f
4052-/* --- MODULE INFORMATION --- */
4053-
4054-const lt_dlinfo *
4055-lt_dlgetinfo (
4056- lt_dlhandle handle)
4057-{
4058- if (!handle)
4059- {
4060- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE));
4061- return 0;
4062- }
4063-
4064- return &(handle->info);
4065-}
4066-
4067-lt_dlhandle
4068-lt_dlhandle_next (
4069- lt_dlhandle place)
4070-{
4071- return place ? place->next : handles;
4072-}
4073-
4074-int
4075-lt_dlforeach (
4076- int (*func) LT_PARAMS((lt_dlhandle handle, lt_ptr data)),
4077- lt_ptr data)
4078-{
4079- int errors = 0;
4080- lt_dlhandle cur;
4081-
4082- LT_DLMUTEX_LOCK ();
4083-
4084- cur = handles;
4085- while (cur)
4086- {
4087- lt_dlhandle tmp = cur;
4088-
4089- cur = cur->next;
4090- if ((*func) (tmp, data))
4091- {
4092- ++errors;
4093- break;
4094- }
4095- }
4096-
4097- LT_DLMUTEX_UNLOCK ();
4098-
4099- return errors;
4100-}
4101-
4102-lt_dlcaller_id
4103-lt_dlcaller_register ()
4104-{
4105- static lt_dlcaller_id last_caller_id = 0;
4106- int result;
4107-
4108- LT_DLMUTEX_LOCK ();
4109- result = ++last_caller_id;
4110- LT_DLMUTEX_UNLOCK ();
4111-
4112- return result;
4113-}
4114-
4115-lt_ptr
4116-lt_dlcaller_set_data (
4117- lt_dlcaller_id key,
4118- lt_dlhandle handle,
4119- lt_ptr data)
4120-{
4121- int n_elements = 0;
4122- lt_ptr stale = (lt_ptr) 0;
4123- int i;
4124-
4125- /* This needs to be locked so that the caller data can be updated
4126- simultaneously by different threads. */
4127- LT_DLMUTEX_LOCK ();
4128-
4129- if (handle->caller_data)
4130- while (handle->caller_data[n_elements].key)
4131- ++n_elements;
4132-
4133- for (i = 0; i < n_elements; ++i)
4134- {
4135- if (handle->caller_data[i].key == key)
4136- {
4137- stale = handle->caller_data[i].data;
4138- break;
4139- }
4140- }
4141-
4142- /* Ensure that there is enough room in this handle's caller_data
4143- array to accept a new element (and an empty end marker). */
4144- if (i == n_elements)
4145- {
4146- lt_caller_data *temp
4147- = LT_DLREALLOC (lt_caller_data, handle->caller_data, 2+ n_elements);
4148-
4149- if (!temp)
4150- {
4151- stale = 0;
4152- goto done;
4153- }
4154-
4155- handle->caller_data = temp;
4156-
4157- /* We only need this if we needed to allocate a new caller_data. */
4158- handle->caller_data[i].key = key;
4159- handle->caller_data[1+ i].key = 0;
4160- }
4161-
4162- handle->caller_data[i].data = data;
4163-
4164- done:
4165- LT_DLMUTEX_UNLOCK ();
4166-
4167- return stale;
4168-}
4169-
4170-lt_ptr
4171-lt_dlcaller_get_data (
4172- lt_dlcaller_id key,
4173- lt_dlhandle handle)
4174-{
4175- lt_ptr result = (lt_ptr) 0;
4176-
4177- /* This needs to be locked so that the caller data isn't updated by
4178- another thread part way through this function. */
4179- LT_DLMUTEX_LOCK ();
4180-
4181- /* Locate the index of the element with a matching KEY. */
4182- {
4183- int i;
4184- for (i = 0; handle->caller_data[i].key; ++i)
4185- {
4186- if (handle->caller_data[i].key == key)
4187- {
4188- result = handle->caller_data[i].data;
4189- break;
4190- }
4191- }
4192- }
4193-
4194- LT_DLMUTEX_UNLOCK ();
4195-
4196- return result;
4197-}
4198-
4199-
4200-\f
4201-/* --- USER MODULE LOADER API --- */
4202-
4203-
4204-int
4205-lt_dlloader_add (
4206- lt_dlloader *place,
4207- const struct lt_user_dlloader *dlloader,
4208- const char *loader_name)
4209-{
4210- int errors = 0;
4211- lt_dlloader *node = 0, *ptr = 0;
4212-
4213- if ((dlloader == 0) /* diagnose null parameters */
4214- || (dlloader->module_open == 0)
4215- || (dlloader->module_close == 0)
4216- || (dlloader->find_sym == 0))
4217- {
4218- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER));
4219- return 1;
4220- }
4221-
4222- /* Create a new dlloader node with copies of the user callbacks. */
4223- node = LT_EMALLOC (lt_dlloader, 1);
4224- if (!node)
4225- return 1;
4226-
4227- node->next = 0;
4228- node->loader_name = loader_name;
4229- node->sym_prefix = dlloader->sym_prefix;
4230- node->dlloader_exit = dlloader->dlloader_exit;
4231- node->module_open = dlloader->module_open;
4232- node->module_close = dlloader->module_close;
4233- node->find_sym = dlloader->find_sym;
4234- node->dlloader_data = dlloader->dlloader_data;
4235-
4236- LT_DLMUTEX_LOCK ();
4237- if (!loaders)
4238- {
4239- /* If there are no loaders, NODE becomes the list! */
4240- loaders = node;
4241- }
4242- else if (!place)
4243- {
4244- /* If PLACE is not set, add NODE to the end of the
4245- LOADERS list. */
4246- for (ptr = loaders; ptr->next; ptr = ptr->next)
4247- {
4248- /*NOWORK*/;
4249- }
4250-
4251- ptr->next = node;
4252- }
4253- else if (loaders == place)
4254- {
4255- /* If PLACE is the first loader, NODE goes first. */
4256- node->next = place;
4257- loaders = node;
4258- }
4259- else
4260- {
4261- /* Find the node immediately preceding PLACE. */
4262- for (ptr = loaders; ptr->next != place; ptr = ptr->next)
4263- {
4264- /*NOWORK*/;
4265- }
4266-
4267- if (ptr->next != place)
4268- {
4269- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER));
4270- ++errors;
4271- }
4272- else
4273- {
4274- /* Insert NODE between PTR and PLACE. */
4275- node->next = place;
4276- ptr->next = node;
4277- }
4278- }
4279-
4280- LT_DLMUTEX_UNLOCK ();
4281-
4282- return errors;
4283-}
4284-
4285-int
4286-lt_dlloader_remove (
4287- const char *loader_name)
4288-{
4289- lt_dlloader *place = lt_dlloader_find (loader_name);
4290- lt_dlhandle handle;
4291- int errors = 0;
4292-
4293- if (!place)
4294- {
4295- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER));
4296- return 1;
4297- }
4298-
4299- LT_DLMUTEX_LOCK ();
4300-
4301- /* Fail if there are any open modules which use this loader. */
4302- for (handle = handles; handle; handle = handle->next)
4303- {
4304- if (handle->loader == place)
4305- {
4306- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (REMOVE_LOADER));
4307- ++errors;
4308- goto done;
4309- }
4310- }
4311-
4312- if (place == loaders)
4313- {
4314- /* PLACE is the first loader in the list. */
4315- loaders = loaders->next;
4316- }
4317- else
4318- {
4319- /* Find the loader before the one being removed. */
4320- lt_dlloader *prev;
4321- for (prev = loaders; prev->next; prev = prev->next)
4322- {
4323- if (!strcmp (prev->next->loader_name, loader_name))
4324- {
4325- break;
4326- }
4327- }
4328-
4329- place = prev->next;
4330- prev->next = prev->next->next;
4331- }
4332-
4333- if (place->dlloader_exit)
4334- {
4335- errors = place->dlloader_exit (place->dlloader_data);
4336- }
4337-
4338- LT_DLFREE (place);
4339-
4340- done:
4341- LT_DLMUTEX_UNLOCK ();
4342-
4343- return errors;
4344-}
4345-
4346-lt_dlloader *
4347-lt_dlloader_next (
4348- lt_dlloader *place)
4349-{
4350- lt_dlloader *next;
4351-
4352- LT_DLMUTEX_LOCK ();
4353- next = place ? place->next : loaders;
4354- LT_DLMUTEX_UNLOCK ();
4355-
4356- return next;
4357-}
4358-
4359-const char *
4360-lt_dlloader_name (
4361- lt_dlloader *place)
4362-{
4363- const char *name = 0;
4364-
4365- if (place)
4366- {
4367- LT_DLMUTEX_LOCK ();
4368- name = place ? place->loader_name : 0;
4369- LT_DLMUTEX_UNLOCK ();
4370- }
4371- else
4372- {
4373- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER));
4374- }
4375-
4376- return name;
4377-}
4378-
4379-lt_user_data *
4380-lt_dlloader_data (
4381- lt_dlloader *place)
4382-{
4383- lt_user_data *data = 0;
4384-
4385- if (place)
4386- {
4387- LT_DLMUTEX_LOCK ();
4388- data = place ? &(place->dlloader_data) : 0;
4389- LT_DLMUTEX_UNLOCK ();
4390- }
4391- else
4392- {
4393- LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER));
4394- }
4395-
4396- return data;
4397-}
4398-
4399-lt_dlloader *
4400-lt_dlloader_find (
4401- const char *loader_name)
4402-{
4403- lt_dlloader *place = 0;
4404-
4405- LT_DLMUTEX_LOCK ();
4406- for (place = loaders; place; place = place->next)
4407- {
4408- if (strcmp (place->loader_name, loader_name) == 0)
4409- {
4410- break;
4411- }
4412- }
4413- LT_DLMUTEX_UNLOCK ();
4414-
4415- return place;
4416-}
4417-
4418-} // namespace scim
4419diff -up scim-1.4.8/src/ltdl.h.fix-dlopen scim-1.4.8/src/ltdl.h
4420--- scim-1.4.8/src/ltdl.h.fix-dlopen 2008-11-02 14:42:36.000000000 +0800
4421+++ scim-1.4.8/src/ltdl.h 2009-03-25 15:12:47.333072768 +0800
4422@@ -1,369 +0,0 @@
4423-/* ltdl.h -- generic dlopen functions
4424- Copyright (C) 1998-2000 Free Software Foundation, Inc.
4425- Originally by Thomas Tanner <tanner@ffii.org>
4426- This file is part of GNU Libtool.
4427-
4428-This library is free software; you can redistribute it and/or
4429-modify it under the terms of the GNU Lesser General Public
4430-License as published by the Free Software Foundation; either
4431-version 2 of the License, or (at your option) any later version.
4432-
4433-As a special exception to the GNU Lesser General Public License,
4434-if you distribute this file as part of a program or library that
4435-is built using GNU libtool, you may include it under the same
4436-distribution terms that you use for the rest of that program.
4437-
4438-This library is distributed in the hope that it will be useful,
4439-but WITHOUT ANY WARRANTY; without even the implied warranty of
4440-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
4441-Lesser General Public License for more details.
4442-
4443-You should have received a copy of the GNU Lesser General Public
4444-License along with this library; if not, write to the Free
4445-Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
4446-02111-1307 USA
4447-*/
4448-
4449-/* Only include this header file once. */
4450-#ifndef LTDL_H
4451-#define LTDL_H 1
4452-
4453-#include <sys/types.h> /* for size_t declaration */
4454-namespace scim {
4455-
4456-\f
4457-/* --- MACROS FOR PORTABILITY --- */
4458-
4459-
4460-/* Saves on those hard to debug '\0' typos.... */
4461-#define LT_EOS_CHAR '\0'
4462-
4463-/* LTDL_BEGIN_C_DECLS should be used at the beginning of your declarations,
4464- so that C++ compilers don't mangle their names. Use LTDL_END_C_DECLS at
4465- the end of C declarations. */
4466-#ifdef __cplusplus
4467-# define LT_BEGIN_C_DECLS extern "C" {
4468-# define LT_END_C_DECLS }
4469-#else
4470-# define LT_BEGIN_C_DECLS /* empty */
4471-# define LT_END_C_DECLS /* empty */
4472-#endif
4473-
4474-//LT_BEGIN_C_DECLS
4475-
4476-
4477-/* LT_PARAMS is a macro used to wrap function prototypes, so that compilers
4478- that don't understand ANSI C prototypes still work, and ANSI C
4479- compilers can issue warnings about type mismatches. */
4480-#if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(WIN32) || defined(__cplusplus)
4481-# define LT_PARAMS(protos) protos
4482-# define lt_ptr void*
4483-#else
4484-# define LT_PARAMS(protos) ()
4485-# define lt_ptr char*
4486-#endif
4487-
4488-/* LT_STMT_START/END are used to create macros which expand to a
4489- a single compound statement in a portable way. */
4490-#if defined (__GNUC__) && !defined (__STRICT_ANSI__) && !defined (__cplusplus)
4491-# define LT_STMT_START (void)(
4492-# define LT_STMT_END )
4493-#else
4494-# if (defined (sun) || defined (__sun__))
4495-# define LT_STMT_START if (1)
4496-# define LT_STMT_END else (void)0
4497-# else
4498-# define LT_STMT_START do
4499-# define LT_STMT_END while (0)
4500-# endif
4501-#endif
4502-
4503-/* LT_CONC creates a new concatenated symbol for the compiler
4504- in a portable way. */
4505-#if defined(__STDC__) || defined(__cplusplus) || defined(_MSC_VER)
4506-# define LT_CONC(s,t) s##t
4507-#else
4508-# define LT_CONC(s,t) s/**/t
4509-#endif
4510-
4511-/* LT_STRLEN can be used safely on NULL pointers. */
4512-#define LT_STRLEN(s) (((s) && (s)[0]) ? strlen (s) : 0)
4513-
4514-
4515-\f
4516-/* --- WINDOWS SUPPORT --- */
4517-
4518-
4519-/* Canonicalise Windows and Cygwin recognition macros. */
4520-#ifdef __CYGWIN32__
4521-# ifndef __CYGWIN__
4522-# define __CYGWIN__ __CYGWIN32__
4523-# endif
4524-#endif
4525-#if defined(_WIN32) || defined(WIN32)
4526-# ifndef __WINDOWS__
4527-# ifdef _WIN32
4528-# define __WINDOWS__ _WIN32
4529-# else
4530-# ifdef WIN32
4531-# define __WINDOWS__ WIN32
4532-# endif
4533-# endif
4534-# endif
4535-#endif
4536-
4537-
4538-#ifdef __WINDOWS__
4539-# ifndef __CYGWIN__
4540-/* LT_DIRSEP_CHAR is accepted *in addition* to '/' as a directory
4541- separator when it is set. */
4542-# define LT_DIRSEP_CHAR '\\'
4543-# define LT_PATHSEP_CHAR ';'
4544-# endif
4545-#endif
4546-#ifndef LT_PATHSEP_CHAR
4547-# define LT_PATHSEP_CHAR ':'
4548-#endif
4549-
4550-/* DLL building support on win32 hosts; mostly to workaround their
4551- ridiculous implementation of data symbol exporting. */
4552-#ifndef LT_SCOPE
4553-# ifdef __WINDOWS__
4554-# ifdef DLL_EXPORT /* defined by libtool (if required) */
4555-# define LT_SCOPE __declspec(dllexport)
4556-# endif
4557-# ifdef LIBLTDL_DLL_IMPORT /* define if linking with this dll */
4558-# define LT_SCOPE extern __declspec(dllimport)
4559-# endif
4560-# endif
4561-# ifndef LT_SCOPE /* static linking or !__WINDOWS__ */
4562-# define LT_SCOPE extern
4563-# endif
4564-#endif
4565-
4566-
4567-#if defined(_MSC_VER) /* Visual Studio */
4568-# define R_OK 4
4569-#endif
4570-
4571-
4572-\f
4573-/* --- DYNAMIC MODULE LOADING API --- */
4574-
4575-
4576-typedef struct lt_dlhandle_struct *lt_dlhandle; /* A loaded module. */
4577-
4578-/* Initialisation and finalisation functions for libltdl. */
4579-LT_SCOPE int lt_dlinit LT_PARAMS((void));
4580-LT_SCOPE int lt_dlexit LT_PARAMS((void));
4581-
4582-/* Module search path manipulation. */
4583-LT_SCOPE int lt_dladdsearchdir LT_PARAMS((const char *search_dir));
4584-LT_SCOPE int lt_dlinsertsearchdir LT_PARAMS((const char *before,
4585- const char *search_dir));
4586-LT_SCOPE int lt_dlsetsearchpath LT_PARAMS((const char *search_path));
4587-LT_SCOPE const char *lt_dlgetsearchpath LT_PARAMS((void));
4588-LT_SCOPE int lt_dlforeachfile LT_PARAMS((
4589- const char *search_path,
4590- int (*func) (const char *filename, lt_ptr data),
4591- lt_ptr data));
4592-
4593-/* Portable libltdl versions of the system dlopen() API. */
4594-LT_SCOPE lt_dlhandle lt_dlopen LT_PARAMS((const char *filename));
4595-LT_SCOPE lt_dlhandle lt_dlopenext LT_PARAMS((const char *filename));
4596-LT_SCOPE lt_ptr lt_dlsym LT_PARAMS((lt_dlhandle handle,
4597- const char *name));
4598-LT_SCOPE const char *lt_dlerror LT_PARAMS((void));
4599-LT_SCOPE int lt_dlclose LT_PARAMS((lt_dlhandle handle));
4600-
4601-/* Module residency management. */
4602-LT_SCOPE int lt_dlmakeresident LT_PARAMS((lt_dlhandle handle));
4603-LT_SCOPE int lt_dlisresident LT_PARAMS((lt_dlhandle handle));
4604-
4605-
4606-
4607-\f
4608-/* --- MUTEX LOCKING --- */
4609-
4610-
4611-typedef void lt_dlmutex_lock LT_PARAMS((void));
4612-typedef void lt_dlmutex_unlock LT_PARAMS((void));
4613-typedef void lt_dlmutex_seterror LT_PARAMS((const char *errmsg));
4614-typedef const char *lt_dlmutex_geterror LT_PARAMS((void));
4615-
4616-LT_SCOPE int lt_dlmutex_register LT_PARAMS((lt_dlmutex_lock *lock,
4617- lt_dlmutex_unlock *unlock,
4618- lt_dlmutex_seterror *seterror,
4619- lt_dlmutex_geterror *geterror));
4620-
4621-
4622-
4623-\f
4624-/* --- MEMORY HANDLING --- */
4625-
4626-
4627-/* By default, the realloc function pointer is set to our internal
4628- realloc implementation which iself uses lt_dlmalloc and lt_dlfree.
4629- libltdl relies on a featureful realloc, but if you are sure yours
4630- has the right semantics then you can assign it directly. Generally,
4631- it is safe to assign just a malloc() and a free() function. */
4632-LT_SCOPE lt_ptr (*lt_dlmalloc) LT_PARAMS((size_t size));
4633-LT_SCOPE lt_ptr (*lt_dlrealloc) LT_PARAMS((lt_ptr ptr, size_t size));
4634-LT_SCOPE void (*lt_dlfree) LT_PARAMS((lt_ptr ptr));
4635-
4636-
4637-
4638-\f
4639-/* --- PRELOADED MODULE SUPPORT --- */
4640-
4641-
4642-/* A preopened symbol. Arrays of this type comprise the exported
4643- symbols for a dlpreopened module. */
4644-typedef struct {
4645- const char *name;
4646- lt_ptr address;
4647-} lt_dlsymlist;
4648-
4649-LT_SCOPE int lt_dlpreload LT_PARAMS((const lt_dlsymlist *preloaded));
4650-LT_SCOPE int lt_dlpreload_default
4651- LT_PARAMS((const lt_dlsymlist *preloaded));
4652-
4653-#define LTDL_SET_PRELOADED_SYMBOLS() LT_STMT_START{ \
4654- extern const lt_dlsymlist lt_preloaded_symbols[]; \
4655- lt_dlpreload_default(lt_preloaded_symbols); \
4656- }LT_STMT_END
4657-
4658-
4659-
4660-\f
4661-/* --- MODULE INFORMATION --- */
4662-
4663-
4664-/* Read only information pertaining to a loaded module. */
4665-typedef struct {
4666- char *filename; /* file name */
4667- char *name; /* module name */
4668- int ref_count; /* number of times lt_dlopened minus
4669- number of times lt_dlclosed. */
4670-} lt_dlinfo;
4671-
4672-LT_SCOPE const lt_dlinfo *lt_dlgetinfo LT_PARAMS((lt_dlhandle handle));
4673-LT_SCOPE lt_dlhandle lt_dlhandle_next LT_PARAMS((lt_dlhandle place));
4674-LT_SCOPE int lt_dlforeach LT_PARAMS((
4675- int (*func) (lt_dlhandle handle, lt_ptr data),
4676- lt_ptr data));
4677-
4678-/* Associating user data with loaded modules. */
4679-typedef unsigned lt_dlcaller_id;
4680-
4681-LT_SCOPE lt_dlcaller_id lt_dlcaller_register LT_PARAMS((void));
4682-LT_SCOPE lt_ptr lt_dlcaller_set_data LT_PARAMS((lt_dlcaller_id key,
4683- lt_dlhandle handle,
4684- lt_ptr data));
4685-LT_SCOPE lt_ptr lt_dlcaller_get_data LT_PARAMS((lt_dlcaller_id key,
4686- lt_dlhandle handle));
4687-
4688-
4689-\f
4690-/* --- USER MODULE LOADER API --- */
4691-
4692-
4693-typedef struct lt_dlloader lt_dlloader;
4694-typedef lt_ptr lt_user_data;
4695-typedef lt_ptr lt_module;
4696-
4697-/* Function pointer types for creating user defined module loaders. */
4698-typedef lt_module lt_module_open LT_PARAMS((lt_user_data loader_data,
4699- const char *filename));
4700-typedef int lt_module_close LT_PARAMS((lt_user_data loader_data,
4701- lt_module handle));
4702-typedef lt_ptr lt_find_sym LT_PARAMS((lt_user_data loader_data,
4703- lt_module handle,
4704- const char *symbol));
4705-typedef int lt_dlloader_exit LT_PARAMS((lt_user_data loader_data));
4706-
4707-struct lt_user_dlloader {
4708- const char *sym_prefix;
4709- lt_module_open *module_open;
4710- lt_module_close *module_close;
4711- lt_find_sym *find_sym;
4712- lt_dlloader_exit *dlloader_exit;
4713- lt_user_data dlloader_data;
4714-};
4715-
4716-LT_SCOPE lt_dlloader *lt_dlloader_next LT_PARAMS((lt_dlloader *place));
4717-LT_SCOPE lt_dlloader *lt_dlloader_find LT_PARAMS((
4718- const char *loader_name));
4719-LT_SCOPE const char *lt_dlloader_name LT_PARAMS((lt_dlloader *place));
4720-LT_SCOPE lt_user_data *lt_dlloader_data LT_PARAMS((lt_dlloader *place));
4721-LT_SCOPE int lt_dlloader_add LT_PARAMS((lt_dlloader *place,
4722- const struct lt_user_dlloader *dlloader,
4723- const char *loader_name));
4724-LT_SCOPE int lt_dlloader_remove LT_PARAMS((
4725- const char *loader_name));
4726-
4727-
4728-\f
4729-/* --- ERROR MESSAGE HANDLING --- */
4730-
4731-
4732-/* Defining error strings alongside their symbolic names in a macro in
4733- this way allows us to expand the macro in different contexts with
4734- confidence that the enumeration of symbolic names will map correctly
4735- onto the table of error strings. */
4736-#define lt_dlerror_table \
4737- LT_ERROR(UNKNOWN, "unknown error") \
4738- LT_ERROR(DLOPEN_NOT_SUPPORTED, "dlopen support not available") \
4739- LT_ERROR(INVALID_LOADER, "invalid loader") \
4740- LT_ERROR(INIT_LOADER, "loader initialization failed") \
4741- LT_ERROR(REMOVE_LOADER, "loader removal failed") \
4742- LT_ERROR(FILE_NOT_FOUND, "file not found") \
4743- LT_ERROR(DEPLIB_NOT_FOUND, "dependency library not found") \
4744- LT_ERROR(NO_SYMBOLS, "no symbols defined") \
4745- LT_ERROR(CANNOT_OPEN, "can't open the module") \
4746- LT_ERROR(CANNOT_CLOSE, "can't close the module") \
4747- LT_ERROR(SYMBOL_NOT_FOUND, "symbol not found") \
4748- LT_ERROR(NO_MEMORY, "not enough memory") \
4749- LT_ERROR(INVALID_HANDLE, "invalid module handle") \
4750- LT_ERROR(BUFFER_OVERFLOW, "internal buffer overflow") \
4751- LT_ERROR(INVALID_ERRORCODE, "invalid errorcode") \
4752- LT_ERROR(SHUTDOWN, "library already shutdown") \
4753- LT_ERROR(CLOSE_RESIDENT_MODULE, "can't close resident module") \
4754- LT_ERROR(INVALID_MUTEX_ARGS, "invalid mutex handler registration") \
4755- LT_ERROR(INVALID_POSITION, "invalid search path insert position")
4756-
4757-/* Enumerate the symbolic error names. */
4758-enum {
4759-#define LT_ERROR(name, diagnostic) LT_CONC(LT_ERROR_, name),
4760- lt_dlerror_table
4761-#undef LT_ERROR
4762-
4763- LT_ERROR_MAX
4764-};
4765-
4766-/* These functions are only useful from inside custom module loaders. */
4767-LT_SCOPE int lt_dladderror LT_PARAMS((const char *diagnostic));
4768-LT_SCOPE int lt_dlseterror LT_PARAMS((int errorcode));
4769-
4770-
4771-
4772-\f
4773-/* --- SOURCE COMPATIBILITY WITH OLD LIBLTDL --- */
4774-
4775-
4776-#ifdef LT_NON_POSIX_NAMESPACE
4777-# define lt_ptr_t lt_ptr
4778-# define lt_module_t lt_module
4779-# define lt_module_open_t lt_module_open
4780-# define lt_module_close_t lt_module_close
4781-# define lt_find_sym_t lt_find_sym
4782-# define lt_dlloader_exit_t lt_dlloader_exit
4783-# define lt_dlloader_t lt_dlloader
4784-# define lt_dlloader_data_t lt_user_data
4785-#endif
4786-
4787-//LT_END_C_DECLS
4788-
4789-} // namespace scim
4790-
4791-#endif /* !LTDL_H */
4792diff -up scim-1.4.8/src/scim_module.cpp.fix-dlopen scim-1.4.8/src/scim_module.cpp
4793--- scim-1.4.8/src/scim_module.cpp.fix-dlopen 2009-03-25 15:11:42.223072366 +0800
4794+++ scim-1.4.8/src/scim_module.cpp 2009-03-25 15:11:42.250015385 +0800
4795@@ -42,6 +42,7 @@ typedef void (*ModuleExitFunc) (void);
4796
4797 struct Module::ModuleImpl
4798 {
4799+ lt_dladvise advise;
4800 lt_dlhandle handle;
4801 ModuleInitFunc init;
4802 ModuleExitFunc exit;
4803@@ -120,18 +121,23 @@ Module::Module ()
4804 : m_impl (new ModuleImpl)
4805 {
4806 lt_dlinit ();
4807+ lt_dladvise_init (&(m_impl->advise));
4808+ lt_dladvise_ext (&(m_impl->advise));
4809+ lt_dladvise_global (&(m_impl->advise));
4810 }
4811
4812 Module::Module (const String &name, const String &type)
4813 : m_impl (new ModuleImpl)
4814 {
4815- lt_dlinit ();
4816+ Module();
4817+
4818 load (name, type);
4819 }
4820
4821 Module::~Module ()
4822 {
4823 unload ();
4824+ lt_dladvise_destroy (&(m_impl->advise));
4825 lt_dlexit ();
4826 delete m_impl;
4827 }
4828@@ -169,13 +175,13 @@ Module::load (const String &name, const
4829
4830 for (it = paths.begin (); it != paths.end (); ++it) {
4831 module_path = *it + String (SCIM_PATH_DELIM_STRING) + name;
4832- new_handle = lt_dlopenext (module_path.c_str ());
4833+ new_handle = lt_dlopenadvise (module_path.c_str (), m_impl->advise);
4834 if (new_handle)
4835 break;
4836 }
4837
4838 if (!new_handle) {
4839- new_handle = lt_dlopenext (name.c_str ());
4840+ new_handle = lt_dlopenadvise (name.c_str (), m_impl->advise);
4841 }
4842
4843 if (!new_handle)
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