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| version 1.3, 2003/01/14 17:13:47 | version 1.4, 2012/06/08 15:25:55 |
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| Line 1 | Line 1 |
| /* ltdl.c -- system independent dlopen wrapper | /* ltdl.c -- system independent dlopen wrapper |
| Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. | |
| Originally by Thomas Tanner <tanner@ffii.org> | |
| This file is part of GNU Libtool. | |
| This library is free software; you can redistribute it and/or | Copyright (C) 1998, 1999, 2000, 2004, 2005, 2006, |
| 2007, 2008, 2011 Free Software Foundation, Inc. | |
| Written by Thomas Tanner, 1998 | |
| NOTE: The canonical source of this file is maintained with the | |
| GNU Libtool package. Report bugs to bug-libtool@gnu.org. | |
| GNU Libltdl is free software; you can redistribute it and/or | |
| modify it under the terms of the GNU Lesser General Public | modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either | License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. | version 2 of the License, or (at your option) any later version. |
| As a special exception to the GNU Lesser General Public License, | As a special exception to the GNU Lesser General Public License, |
| if you distribute this file as part of a program or library that | if you distribute this file as part of a program or library that |
| is built using GNU libtool, you may include it under the same | is built using GNU Libtool, you may include this file under the |
| distribution terms that you use for the rest of that program. | same distribution terms that you use for the rest of that program. |
| This library is distributed in the hope that it will be useful, | GNU Libltdl is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| Lesser General Public License for more details. | GNU Lesser General Public License for more details. |
| You should have received a copy of the GNU Lesser General Public | You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software | License along with GNU Libltdl; see the file COPYING.LIB. If not, a |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | copy can be downloaded from http://www.gnu.org/licenses/lgpl.html, |
| 02111-1307 USA | or obtained by writing to the Free Software Foundation, Inc., |
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
| */ | */ |
| #include "config.h" | #include "lt__private.h" |
| #include "lt_system.h" | |
| #if HAVE_UNISTD_H | #include "lt_dlloader.h" |
| # include <unistd.h> | |
| #endif | |
| #if HAVE_STDIO_H | |
| # include <stdio.h> | |
| #endif | |
| #if HAVE_STDLIB_H | |
| # include <stdlib.h> | |
| #endif | |
| #if HAVE_STRING_H | |
| # include <string.h> | |
| #else | |
| # if HAVE_STRINGS_H | |
| # include <strings.h> | |
| # endif | |
| #endif | |
| #if HAVE_CTYPE_H | |
| # include <ctype.h> | |
| #endif | |
| #if HAVE_MALLOC_H | |
| # include <malloc.h> | |
| #endif | |
| #if HAVE_MEMORY_H | |
| # include <memory.h> | |
| #endif | |
| #if HAVE_ERRNO_H | |
| # include <errno.h> | |
| #endif | |
| #ifdef HAVE_CONFIG_H | |
| #if HAVE_DIRENT_H | |
| # include <dirent.h> | |
| # define LT_D_NAMLEN(dirent) (strlen((dirent)->d_name)) | |
| #else | |
| # define dirent direct | |
| # define LT_D_NAMLEN(dirent) ((dirent)->d_namlen) | |
| # if HAVE_SYS_NDIR_H | |
| # include <sys/ndir.h> | |
| # endif | |
| # if HAVE_SYS_DIR_H | |
| # include <sys/dir.h> | |
| # endif | |
| # if HAVE_NDIR_H | |
| # include <ndir.h> | |
| # endif | |
| #endif | |
| #endif | |
| #if HAVE_ARGZ_H | |
| # include <argz.h> | |
| #endif | |
| #if HAVE_ASSERT_H | |
| # include <assert.h> | |
| #else | |
| # define assert(arg) ((void) 0) | |
| #endif | |
| #include "ltdl.h" | |
| #if WITH_DMALLOC | |
| # include <dmalloc.h> | |
| #endif | |
| /* --- WINDOWS SUPPORT --- */ | |
| #ifdef DLL_EXPORT | |
| # define LT_GLOBAL_DATA __declspec(dllexport) | |
| #else | |
| # define LT_GLOBAL_DATA | |
| #endif | |
| /* fopen() mode flags for reading a text file */ | |
| #undef LT_READTEXT_MODE | |
| #ifdef __WINDOWS__ | |
| # define LT_READTEXT_MODE "rt" | |
| #else | |
| # define LT_READTEXT_MODE "r" | |
| #endif | |
| /* --- MANIFEST CONSTANTS --- */ | /* --- MANIFEST CONSTANTS --- */ |
| Line 129 Foundation, Inc., 59 Temple Place, Suite | Line 42 Foundation, Inc., 59 Temple Place, Suite |
| #define LTDL_SEARCHPATH_VAR "LTDL_LIBRARY_PATH" | #define LTDL_SEARCHPATH_VAR "LTDL_LIBRARY_PATH" |
| /* Standard libtool archive file extension. */ | /* Standard libtool archive file extension. */ |
| #undef LTDL_ARCHIVE_EXT | #undef LT_ARCHIVE_EXT |
| #define LTDL_ARCHIVE_EXT ".la" | #define LT_ARCHIVE_EXT ".la" |
| /* max. filename length */ | /* max. filename length */ |
| #ifndef LT_FILENAME_MAX | #if !defined(LT_FILENAME_MAX) |
| # define LT_FILENAME_MAX 1024 | # define LT_FILENAME_MAX 1024 |
| #endif | #endif |
| #if !defined(LT_LIBEXT) | |
| # define LT_LIBEXT "a" | |
| #endif | |
| #if !defined(LT_LIBPREFIX) | |
| # define LT_LIBPREFIX "lib" | |
| #endif | |
| /* This is the maximum symbol size that won't require malloc/free */ | /* This is the maximum symbol size that won't require malloc/free */ |
| #undef LT_SYMBOL_LENGTH | #undef LT_SYMBOL_LENGTH |
| #define LT_SYMBOL_LENGTH 128 | #define LT_SYMBOL_LENGTH 128 |
| Line 145 Foundation, Inc., 59 Temple Place, Suite | Line 66 Foundation, Inc., 59 Temple Place, Suite |
| #undef LT_SYMBOL_OVERHEAD | #undef LT_SYMBOL_OVERHEAD |
| #define LT_SYMBOL_OVERHEAD 5 | #define LT_SYMBOL_OVERHEAD 5 |
| /* --- MEMORY HANDLING --- */ | |
| /* These are the functions used internally. In addition to making | |
| use of the associated function pointers above, they also perform | |
| error handling. */ | |
| static char *lt_estrdup LT_PARAMS((const char *str)); | |
| static lt_ptr lt_emalloc LT_PARAMS((size_t size)); | |
| static lt_ptr lt_erealloc LT_PARAMS((lt_ptr addr, size_t size)); | |
| static lt_ptr rpl_realloc LT_PARAMS((lt_ptr ptr, size_t size)); | |
| /* These are the pointers that can be changed by the caller: */ | |
| LT_GLOBAL_DATA lt_ptr (*lt_dlmalloc) LT_PARAMS((size_t size)) | |
| = (lt_ptr (*) LT_PARAMS((size_t))) malloc; | |
| LT_GLOBAL_DATA lt_ptr (*lt_dlrealloc) LT_PARAMS((lt_ptr ptr, size_t size)) | |
| = (lt_ptr (*) LT_PARAMS((lt_ptr, size_t))) rpl_realloc; | |
| LT_GLOBAL_DATA void (*lt_dlfree) LT_PARAMS((lt_ptr ptr)) | |
| = (void (*) LT_PARAMS((lt_ptr))) free; | |
| /* The following macros reduce the amount of typing needed to cast | |
| assigned memory. */ | |
| #if WITH_DMALLOC | |
| #define LT_DLMALLOC(tp, n) ((tp *) xmalloc ((n) * sizeof(tp))) | |
| #define LT_DLREALLOC(tp, p, n) ((tp *) xrealloc ((p), (n) * sizeof(tp))) | |
| #define LT_DLFREE(p) \ | |
| LT_STMT_START { if (p) (p) = (xfree (p), (lt_ptr) 0); } LT_STMT_END | |
| #define LT_EMALLOC(tp, n) ((tp *) xmalloc ((n) * sizeof(tp))) | |
| #define LT_EREALLOC(tp, p, n) ((tp *) xrealloc ((p), (n) * sizeof(tp))) | |
| #else | |
| #define LT_DLMALLOC(tp, n) ((tp *) lt_dlmalloc ((n) * sizeof(tp))) | |
| #define LT_DLREALLOC(tp, p, n) ((tp *) rpl_realloc ((p), (n) * sizeof(tp))) | |
| #define LT_DLFREE(p) \ | |
| LT_STMT_START { if (p) (p) = (lt_dlfree (p), (lt_ptr) 0); } LT_STMT_END | |
| #define LT_EMALLOC(tp, n) ((tp *) lt_emalloc ((n) * sizeof(tp))) | |
| #define LT_EREALLOC(tp, p, n) ((tp *) lt_erealloc ((p), (n) * sizeof(tp))) | |
| #endif | |
| #define LT_DLMEM_REASSIGN(p, q) LT_STMT_START { \ | |
| if ((p) != (q)) { if (p) lt_dlfree (p); (p) = (q); (q) = 0; } \ | |
| } LT_STMT_END | |
| /* --- REPLACEMENT FUNCTIONS --- */ | |
| #undef strdup | |
| #define strdup rpl_strdup | |
| static char *strdup LT_PARAMS((const char *str)); | |
| static char * | |
| strdup(str) | |
| const char *str; | |
| { | |
| char *tmp = NULL; | |
| if (str) | |
| { | |
| tmp = LT_DLMALLOC (char, 1+ strlen (str)); | |
| if (tmp) | |
| { | |
| strcpy(tmp, str); | |
| } | |
| } | |
| return tmp; | |
| } | |
| #if ! HAVE_STRCMP | |
| #undef strcmp | |
| #define strcmp rpl_strcmp | |
| static int strcmp LT_PARAMS((const char *str1, const char *str2)); | |
| static int | |
| strcmp (str1, str2) | |
| const char *str1; | |
| const char *str2; | |
| { | |
| if (str1 == str2) | |
| return 0; | |
| if (str1 == NULL) | |
| return -1; | |
| if (str2 == NULL) | |
| return 1; | |
| for (;*str1 && *str2; ++str1, ++str2) | |
| { | |
| if (*str1 != *str2) | |
| break; | |
| } | |
| return (int)(*str1 - *str2); | |
| } | |
| #endif | |
| #if ! HAVE_STRCHR | |
| # if HAVE_INDEX | |
| # define strchr index | |
| # else | |
| # define strchr rpl_strchr | |
| static const char *strchr LT_PARAMS((const char *str, int ch)); | |
| static const char* | |
| strchr(str, ch) | |
| const char *str; | |
| int ch; | |
| { | |
| const char *p; | |
| for (p = str; *p != (char)ch && *p != LT_EOS_CHAR; ++p) | |
| /*NOWORK*/; | |
| return (*p == (char)ch) ? p : 0; | |
| } | |
| # endif | |
| #endif /* !HAVE_STRCHR */ | |
| #if ! HAVE_STRRCHR | |
| # if HAVE_RINDEX | |
| # define strrchr rindex | |
| # else | |
| # define strrchr rpl_strrchr | |
| static const char *strrchr LT_PARAMS((const char *str, int ch)); | |
| static const char* | |
| strrchr(str, ch) | |
| const char *str; | |
| int ch; | |
| { | |
| const char *p, *q = NULL; | |
| for (p = str; *p != LT_EOS_CHAR; ++p) | |
| { | |
| if (*p == (char) ch) | |
| { | |
| q = p; | |
| } | |
| } | |
| return q; | |
| } | |
| # endif | |
| #endif | |
| /* NOTE: Neither bcopy nor the memcpy implementation below can | |
| reliably handle copying in overlapping areas of memory. Use | |
| memmove (for which there is a fallback implmentation below) | |
| if you need that behaviour. */ | |
| #if ! HAVE_MEMCPY | |
| # if HAVE_BCOPY | |
| # define memcpy(dest, src, size) bcopy (src, dest, size) | |
| # else | |
| # define memcpy rpl_memcpy | |
| static lt_ptr memcpy LT_PARAMS((lt_ptr dest, const lt_ptr src, size_t size)); | |
| static lt_ptr | |
| memcpy (dest, src, size) | |
| lt_ptr dest; | |
| const lt_ptr src; | |
| size_t size; | |
| { | |
| size_t i = 0; | |
| for (i = 0; i < size; ++i) | |
| { | |
| dest[i] = src[i]; | |
| } | |
| return dest; | |
| } | |
| # endif /* !HAVE_BCOPY */ | |
| #endif /* !HAVE_MEMCPY */ | |
| #if ! HAVE_MEMMOVE | |
| # define memmove rpl_memmove | |
| static lt_ptr memmove LT_PARAMS((lt_ptr dest, const lt_ptr src, size_t size)); | |
| static lt_ptr | |
| memmove (dest, src, size) | |
| lt_ptr dest; | |
| const lt_ptr src; | |
| size_t size; | |
| { | |
| size_t i; | |
| if (dest < src) | |
| for (i = 0; i < size; ++i) | |
| { | |
| dest[i] = src[i]; | |
| } | |
| else if (dest > src) | |
| for (i = size -1; i >= 0; --i) | |
| { | |
| dest[i] = src[i]; | |
| } | |
| return dest; | |
| } | |
| #endif /* !HAVE_MEMMOVE */ | |
| /* According to Alexandre Oliva <oliva@lsd.ic.unicamp.br>, | |
| ``realloc is not entirely portable'' | |
| In any case we want to use the allocator supplied by the user without | |
| burdening them with an lt_dlrealloc function pointer to maintain. | |
| Instead implement our own version (with known boundary conditions) | |
| using lt_dlmalloc and lt_dlfree. */ | |
| #undef realloc | |
| #define realloc rpl_realloc | |
| static lt_ptr | |
| realloc (ptr, size) | |
| lt_ptr ptr; | |
| size_t size; | |
| { | |
| if (size == 0) | |
| { | |
| /* For zero or less bytes, free the original memory */ | |
| if (ptr != NULL) | |
| { | |
| lt_dlfree (ptr); | |
| } | |
| return (lt_ptr) 0; | |
| } | |
| else if (ptr == NULL) | |
| { | |
| /* Allow reallocation of a NULL pointer. */ | |
| return lt_dlmalloc (size); | |
| } | |
| else | |
| { | |
| /* Allocate a new block, copy and free the old block. */ | |
| lt_ptr mem = lt_dlmalloc (size); | |
| if (mem) | |
| { | |
| memcpy (mem, ptr, size); | |
| lt_dlfree (ptr); | |
| } | |
| /* Note that the contents of PTR are not damaged if there is | |
| insufficient memory to realloc. */ | |
| return mem; | |
| } | |
| } | |
| #if ! HAVE_ARGZ_APPEND | |
| # define argz_append rpl_argz_append | |
| static error_t argz_append LT_PARAMS((char **pargz, size_t *pargz_len, | |
| const char *buf, size_t buf_len)); | |
| static error_t | |
| argz_append (pargz, pargz_len, buf, buf_len) | |
| char **pargz; | |
| size_t *pargz_len; | |
| const char *buf; | |
| size_t buf_len; | |
| { | |
| size_t argz_len; | |
| char *argz; | |
| assert (pargz); | |
| assert (pargz_len); | |
| assert ((*pargz && *pargz_len) || (!*pargz && !*pargz_len)); | |
| /* If nothing needs to be appended, no more work is required. */ | |
| if (buf_len == 0) | |
| return 0; | |
| /* Ensure there is enough room to append BUF_LEN. */ | |
| argz_len = *pargz_len + buf_len; | |
| argz = LT_DLREALLOC (char, *pargz, argz_len); | |
| if (!argz) | |
| return ENOMEM; | |
| /* Copy characters from BUF after terminating '\0' in ARGZ. */ | |
| memcpy (argz + *pargz_len, buf, buf_len); | |
| /* Assign new values. */ | |
| *pargz = argz; | |
| *pargz_len = argz_len; | |
| return 0; | |
| } | |
| #endif /* !HAVE_ARGZ_APPEND */ | |
| #if ! HAVE_ARGZ_CREATE_SEP | |
| # define argz_create_sep rpl_argz_create_sep | |
| static error_t argz_create_sep LT_PARAMS((const char *str, int delim, | |
| char **pargz, size_t *pargz_len)); | |
| static error_t | |
| argz_create_sep (str, delim, pargz, pargz_len) | |
| const char *str; | |
| int delim; | |
| char **pargz; | |
| size_t *pargz_len; | |
| { | |
| size_t argz_len; | |
| char *argz = NULL; | |
| assert (str); | |
| assert (pargz); | |
| assert (pargz_len); | |
| /* Make a copy of STR, but replacing each occurence of | |
| DELIM with '\0'. */ | |
| argz_len = 1+ LT_STRLEN (str); | |
| if (argz_len) | |
| { | |
| const char *p; | |
| char *q; | |
| argz = LT_DLMALLOC (char, argz_len); | |
| if (!argz) | |
| return ENOMEM; | |
| for (p = str, q = argz; *p != LT_EOS_CHAR; ++p) | |
| { | |
| if (*p == delim) | |
| { | |
| /* Ignore leading delimiters, and fold consecutive | |
| delimiters in STR into a single '\0' in ARGZ. */ | |
| if ((q > argz) && (q[-1] != LT_EOS_CHAR)) | |
| *q++ = LT_EOS_CHAR; | |
| else | |
| --argz_len; | |
| } | |
| else | |
| *q++ = *p; | |
| } | |
| /* Copy terminating LT_EOS_CHAR. */ | |
| *q = *p; | |
| } | |
| /* If ARGZ_LEN has shrunk to nothing, release ARGZ's memory. */ | |
| if (!argz_len) | |
| LT_DLFREE (argz); | |
| /* Assign new values. */ | |
| *pargz = argz; | |
| *pargz_len = argz_len; | |
| return 0; | |
| } | |
| #endif /* !HAVE_ARGZ_CREATE_SEP */ | |
| #if ! HAVE_ARGZ_INSERT | |
| # define argz_insert rpl_argz_insert | |
| static error_t argz_insert LT_PARAMS((char **pargz, size_t *pargz_len, | |
| char *before, const char *entry)); | |
| static error_t | |
| argz_insert (pargz, pargz_len, before, entry) | |
| char **pargz; | |
| size_t *pargz_len; | |
| char *before; | |
| const char *entry; | |
| { | |
| assert (pargz); | |
| assert (pargz_len); | |
| assert (entry && *entry); | |
| /* No BEFORE address indicates ENTRY should be inserted after the | |
| current last element. */ | |
| if (!before) | |
| return argz_append (pargz, pargz_len, entry, 1+ LT_STRLEN (entry)); | |
| /* This probably indicates a programmer error, but to preserve | |
| semantics, scan back to the start of an entry if BEFORE points | |
| into the middle of it. */ | |
| while ((before >= *pargz) && (before[-1] != LT_EOS_CHAR)) | |
| --before; | |
| { | |
| size_t entry_len = 1+ LT_STRLEN (entry); | |
| size_t argz_len = *pargz_len + entry_len; | |
| size_t offset = before - *pargz; | |
| char *argz = LT_DLREALLOC (char, *pargz, argz_len); | |
| if (!argz) | |
| return ENOMEM; | |
| /* Make BEFORE point to the equivalent offset in ARGZ that it | |
| used to have in *PARGZ incase realloc() moved the block. */ | |
| before = argz + offset; | |
| /* Move the ARGZ entries starting at BEFORE up into the new | |
| space at the end -- making room to copy ENTRY into the | |
| resulting gap. */ | |
| memmove (before + entry_len, before, *pargz_len - offset); | |
| memcpy (before, entry, entry_len); | |
| /* Assign new values. */ | |
| *pargz = argz; | |
| *pargz_len = argz_len; | |
| } | |
| return 0; | |
| } | |
| #endif /* !HAVE_ARGZ_INSERT */ | |
| #if ! HAVE_ARGZ_NEXT | |
| # define argz_next rpl_argz_next | |
| static char *argz_next LT_PARAMS((char *argz, size_t argz_len, | |
| const char *entry)); | |
| static char * | |
| argz_next (argz, argz_len, entry) | |
| char *argz; | |
| size_t argz_len; | |
| const char *entry; | |
| { | |
| assert ((argz && argz_len) || (!argz && !argz_len)); | |
| if (entry) | |
| { | |
| /* Either ARGZ/ARGZ_LEN is empty, or ENTRY points into an address | |
| within the ARGZ vector. */ | |
| assert ((!argz && !argz_len) | |
| || ((argz <= entry) && (entry < (argz + argz_len)))); | |
| /* Move to the char immediately after the terminating | |
| '\0' of ENTRY. */ | |
| entry = 1+ strchr (entry, LT_EOS_CHAR); | |
| /* Return either the new ENTRY, or else NULL if ARGZ is | |
| exhausted. */ | |
| return (entry >= argz + argz_len) ? 0 : (char *) entry; | |
| } | |
| else | |
| { | |
| /* This should probably be flagged as a programmer error, | |
| since starting an argz_next loop with the iterator set | |
| to ARGZ is safer. To preserve semantics, handle the NULL | |
| case by returning the start of ARGZ (if any). */ | |
| if (argz_len > 0) | |
| return argz; | |
| else | |
| return 0; | |
| } | |
| } | |
| #endif /* !HAVE_ARGZ_NEXT */ | |
| #if ! HAVE_ARGZ_STRINGIFY | |
| # define argz_stringify rpl_argz_stringify | |
| static void argz_stringify LT_PARAMS((char *argz, size_t argz_len, | |
| int sep)); | |
| static void | |
| argz_stringify (argz, argz_len, sep) | |
| char *argz; | |
| size_t argz_len; | |
| int sep; | |
| { | |
| assert ((argz && argz_len) || (!argz && !argz_len)); | |
| if (sep) | |
| { | |
| --argz_len; /* don't stringify the terminating EOS */ | |
| while (--argz_len > 0) | |
| { | |
| if (argz[argz_len] == LT_EOS_CHAR) | |
| argz[argz_len] = sep; | |
| } | |
| } | |
| } | |
| #endif /* !HAVE_ARGZ_STRINGIFY */ | |
| /* --- TYPE DEFINITIONS -- */ | |
| /* This type is used for the array of caller data sets in each handler. */ | |
| typedef struct { | |
| lt_dlcaller_id key; | |
| lt_ptr data; | |
| } lt_caller_data; | |
| /* --- OPAQUE STRUCTURES DECLARED IN LTDL.H --- */ | |
| /* Extract the diagnostic strings from the error table macro in the same | |
| order as the enumerated indices in ltdl.h. */ | |
| static const char *lt_dlerror_strings[] = | |
| { | |
| #define LT_ERROR(name, diagnostic) (diagnostic), | |
| lt_dlerror_table | |
| #undef LT_ERROR | |
| 0 | |
| }; | |
| /* This structure is used for the list of registered loaders. */ | |
| struct lt_dlloader { | |
| struct lt_dlloader *next; | |
| const char *loader_name; /* identifying name for each loader */ | |
| const char *sym_prefix; /* prefix for symbols */ | |
| lt_module_open *module_open; | |
| lt_module_close *module_close; | |
| lt_find_sym *find_sym; | |
| lt_dlloader_exit *dlloader_exit; | |
| lt_user_data dlloader_data; | |
| }; | |
| struct lt_dlhandle_struct { | |
| struct lt_dlhandle_struct *next; | |
| lt_dlloader *loader; /* dlopening interface */ | |
| lt_dlinfo info; | |
| int depcount; /* number of dependencies */ | |
| lt_dlhandle *deplibs; /* dependencies */ | |
| lt_module module; /* system module handle */ | |
| lt_ptr system; /* system specific data */ | |
| lt_caller_data *caller_data; /* per caller associated data */ | |
| int flags; /* various boolean stats */ | |
| }; | |
| /* Various boolean flags can be stored in the flags field of an | /* Various boolean flags can be stored in the flags field of an |
| lt_dlhandle_struct... */ | lt_dlhandle... */ |
| #define LT_DLGET_FLAG(handle, flag) (((handle)->flags & (flag)) == (flag)) | #define LT_DLIS_RESIDENT(handle) ((handle)->info.is_resident) |
| #define LT_DLSET_FLAG(handle, flag) ((handle)->flags |= (flag)) | #define LT_DLIS_SYMGLOBAL(handle) ((handle)->info.is_symglobal) |
| #define LT_DLIS_SYMLOCAL(handle) ((handle)->info.is_symlocal) | |
| #define LT_DLRESIDENT_FLAG (0x01 << 0) | |
| /* ...add more flags here... */ | |
| static const char objdir[] = LT_OBJDIR; | |
| #define LT_DLIS_RESIDENT(handle) LT_DLGET_FLAG(handle, LT_DLRESIDENT_FLAG) | static const char archive_ext[] = LT_ARCHIVE_EXT; |
| static const char libext[] = LT_LIBEXT; | |
| static const char libprefix[] = LT_LIBPREFIX; | |
| #define LT_DLSTRERROR(name) lt_dlerror_strings[LT_CONC(LT_ERROR_,name)] | #if defined(LT_MODULE_EXT) |
| static const char shlib_ext[] = LT_MODULE_EXT; | |
| static const char objdir[] = LTDL_OBJDIR; | #endif |
| static const char archive_ext[] = LTDL_ARCHIVE_EXT; | /* If the loadable module suffix is not the same as the linkable |
| #ifdef LTDL_SHLIB_EXT | * shared library suffix, this will be defined. */ |
| static const char shlib_ext[] = LTDL_SHLIB_EXT; | #if defined(LT_SHARED_EXT) |
| #endif | static const char shared_ext[] = LT_SHARED_EXT; |
| #ifdef LTDL_SYSSEARCHPATH | |
| static const char sys_search_path[] = LTDL_SYSSEARCHPATH; | |
| #endif | |
| /* --- MUTEX LOCKING --- */ | |
| /* Macros to make it easier to run the lock functions only if they have | |
| been registered. The reason for the complicated lock macro is to | |
| ensure that the stored error message from the last error is not | |
| accidentally erased if the current function doesn't generate an | |
| error of its own. */ | |
| #define LT_DLMUTEX_LOCK() LT_STMT_START { \ | |
| if (lt_dlmutex_lock_func) (*lt_dlmutex_lock_func)(); \ | |
| } LT_STMT_END | |
| #define LT_DLMUTEX_UNLOCK() LT_STMT_START { \ | |
| if (lt_dlmutex_unlock_func) (*lt_dlmutex_unlock_func)();\ | |
| } LT_STMT_END | |
| #define LT_DLMUTEX_SETERROR(errormsg) LT_STMT_START { \ | |
| if (lt_dlmutex_seterror_func) \ | |
| (*lt_dlmutex_seterror_func) (errormsg); \ | |
| else lt_dllast_error = (errormsg); } LT_STMT_END | |
| #define LT_DLMUTEX_GETERROR(errormsg) LT_STMT_START { \ | |
| if (lt_dlmutex_seterror_func) \ | |
| (errormsg) = (*lt_dlmutex_geterror_func) (); \ | |
| else (errormsg) = lt_dllast_error; } LT_STMT_END | |
| /* The mutex functions stored here are global, and are necessarily the | |
| same for all threads that wish to share access to libltdl. */ | |
| static lt_dlmutex_lock *lt_dlmutex_lock_func = NULL; | |
| static lt_dlmutex_unlock *lt_dlmutex_unlock_func = NULL; | |
| static lt_dlmutex_seterror *lt_dlmutex_seterror_func = NULL; | |
| static lt_dlmutex_geterror *lt_dlmutex_geterror_func = NULL; | |
| static const char *lt_dllast_error = NULL; | |
| /* Either set or reset the mutex functions. Either all the arguments must | |
| be valid functions, or else all can be NULL to turn off locking entirely. | |
| The registered functions should be manipulating a static global lock | |
| from the lock() and unlock() callbacks, which needs to be reentrant. */ | |
| int | |
| lt_dlmutex_register (lock, unlock, seterror, geterror) | |
| lt_dlmutex_lock *lock; | |
| lt_dlmutex_unlock *unlock; | |
| lt_dlmutex_seterror *seterror; | |
| lt_dlmutex_geterror *geterror; | |
| { | |
| lt_dlmutex_unlock *old_unlock = unlock; | |
| int errors = 0; | |
| /* Lock using the old lock() callback, if any. */ | |
| LT_DLMUTEX_LOCK (); | |
| if ((lock && unlock && seterror && geterror) | |
| || !(lock || unlock || seterror || geterror)) | |
| { | |
| lt_dlmutex_lock_func = lock; | |
| lt_dlmutex_unlock_func = unlock; | |
| lt_dlmutex_geterror_func = geterror; | |
| } | |
| else | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_MUTEX_ARGS)); | |
| ++errors; | |
| } | |
| /* Use the old unlock() callback we saved earlier, if any. Otherwise | |
| record any errors using internal storage. */ | |
| if (old_unlock) | |
| (*old_unlock) (); | |
| /* Return the number of errors encountered during the execution of | |
| this function. */ | |
| return errors; | |
| } | |
| /* --- ERROR HANDLING --- */ | |
| static const char **user_error_strings = NULL; | |
| static int errorcount = LT_ERROR_MAX; | |
| int | |
| lt_dladderror (diagnostic) | |
| const char *diagnostic; | |
| { | |
| int errindex = 0; | |
| int result = -1; | |
| const char **temp = NULL; | |
| assert (diagnostic); | |
| LT_DLMUTEX_LOCK (); | |
| errindex = errorcount - LT_ERROR_MAX; | |
| temp = LT_EREALLOC (const char *, user_error_strings, 1 + errindex); | |
| if (temp) | |
| { | |
| user_error_strings = temp; | |
| user_error_strings[errindex] = diagnostic; | |
| result = errorcount++; | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| return result; | |
| } | |
| int | |
| lt_dlseterror (errindex) | |
| int errindex; | |
| { | |
| int errors = 0; | |
| LT_DLMUTEX_LOCK (); | |
| if (errindex >= errorcount || errindex < 0) | |
| { | |
| /* Ack! Error setting the error message! */ | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_ERRORCODE)); | |
| ++errors; | |
| } | |
| else if (errindex < LT_ERROR_MAX) | |
| { | |
| /* No error setting the error message! */ | |
| LT_DLMUTEX_SETERROR (lt_dlerror_strings[errindex]); | |
| } | |
| else | |
| { | |
| /* No error setting the error message! */ | |
| LT_DLMUTEX_SETERROR (user_error_strings[errindex - LT_ERROR_MAX]); | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | |
| } | |
| static lt_ptr | |
| lt_emalloc (size) | |
| size_t size; | |
| { | |
| lt_ptr mem = lt_dlmalloc (size); | |
| if (size && !mem) | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); | |
| return mem; | |
| } | |
| static lt_ptr | |
| lt_erealloc (addr, size) | |
| lt_ptr addr; | |
| size_t size; | |
| { | |
| lt_ptr mem = realloc (addr, size); | |
| if (size && !mem) | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); | |
| return mem; | |
| } | |
| static char * | |
| lt_estrdup (str) | |
| const char *str; | |
| { | |
| char *copy = strdup (str); | |
| if (LT_STRLEN (str) && !copy) | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); | |
| return copy; | |
| } | |
| /* --- DLOPEN() INTERFACE LOADER --- */ | |
| /* The Cygwin dlopen implementation prints a spurious error message to | |
| stderr if its call to LoadLibrary() fails for any reason. We can | |
| mitigate this by not using the Cygwin implementation, and falling | |
| back to our own LoadLibrary() wrapper. */ | |
| #if HAVE_LIBDL && !defined(__CYGWIN__) | |
| /* dynamic linking with dlopen/dlsym */ | |
| #if HAVE_DLFCN_H | |
| # include <dlfcn.h> | |
| #endif | #endif |
| #if defined(LT_DLSEARCH_PATH) | |
| #if HAVE_SYS_DL_H | static const char sys_dlsearch_path[] = LT_DLSEARCH_PATH; |
| # include <sys/dl.h> | |
| #endif | #endif |
| #ifdef RTLD_GLOBAL | |
| # define LT_GLOBAL RTLD_GLOBAL | |
| #else | |
| # ifdef DL_GLOBAL | |
| # define LT_GLOBAL DL_GLOBAL | |
| # endif | |
| #endif /* !RTLD_GLOBAL */ | |
| #ifndef LT_GLOBAL | |
| # define LT_GLOBAL 0 | |
| #endif /* !LT_GLOBAL */ | |
| /* We may have to define LT_LAZY_OR_NOW in the command line if we | |
| find out it does not work in some platform. */ | |
| #ifndef LT_LAZY_OR_NOW | |
| # ifdef RTLD_LAZY | |
| # define LT_LAZY_OR_NOW RTLD_LAZY | |
| # else | |
| # ifdef DL_LAZY | |
| # define LT_LAZY_OR_NOW DL_LAZY | |
| # endif | |
| # endif /* !RTLD_LAZY */ | |
| #endif | |
| #ifndef LT_LAZY_OR_NOW | |
| # ifdef RTLD_NOW | |
| # define LT_LAZY_OR_NOW RTLD_NOW | |
| # else | |
| # ifdef DL_NOW | |
| # define LT_LAZY_OR_NOW DL_NOW | |
| # endif | |
| # endif /* !RTLD_NOW */ | |
| #endif | |
| #ifndef LT_LAZY_OR_NOW | |
| # define LT_LAZY_OR_NOW 0 | |
| #endif /* !LT_LAZY_OR_NOW */ | |
| #if HAVE_DLERROR | |
| # define DLERROR(arg) dlerror () | |
| #else | |
| # define DLERROR(arg) LT_DLSTRERROR (arg) | |
| #endif | |
| static lt_module | |
| sys_dl_open (loader_data, filename) | |
| lt_user_data loader_data; | |
| const char *filename; | |
| { | |
| lt_module module = dlopen (filename, LT_GLOBAL | LT_LAZY_OR_NOW); | |
| if (!module) | |
| { | |
| LT_DLMUTEX_SETERROR (DLERROR (CANNOT_OPEN)); | |
| } | |
| return module; | |
| } | |
| static int | |
| sys_dl_close (loader_data, module) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| { | |
| int errors = 0; | |
| if (dlclose (module) != 0) | |
| { | |
| LT_DLMUTEX_SETERROR (DLERROR (CANNOT_CLOSE)); | |
| ++errors; | |
| } | |
| return errors; | |
| } | |
| static lt_ptr | |
| sys_dl_sym (loader_data, module, symbol) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| const char *symbol; | |
| { | |
| lt_ptr address = dlsym (module, symbol); | |
| if (!address) | |
| { | |
| LT_DLMUTEX_SETERROR (DLERROR (SYMBOL_NOT_FOUND)); | |
| } | |
| return address; | |
| } | |
| static struct lt_user_dlloader sys_dl = | |
| { | |
| # ifdef NEED_USCORE | |
| "_", | |
| # else | |
| 0, | |
| # endif | |
| sys_dl_open, sys_dl_close, sys_dl_sym, 0, 0 }; | |
| #endif /* HAVE_LIBDL */ | |
| /* --- SHL_LOAD() INTERFACE LOADER --- */ | /* --- DYNAMIC MODULE LOADING --- */ |
| #if HAVE_SHL_LOAD | |
| /* dynamic linking with shl_load (HP-UX) (comments from gmodule) */ | |
| #ifdef HAVE_DL_H | |
| # include <dl.h> | |
| #endif | |
| /* some flags are missing on some systems, so we provide | |
| * harmless defaults. | |
| * | |
| * Mandatory: | |
| * BIND_IMMEDIATE - Resolve symbol references when the library is loaded. | |
| * BIND_DEFERRED - Delay code symbol resolution until actual reference. | |
| * | |
| * Optionally: | |
| * BIND_FIRST - Place the library at the head of the symbol search | |
| * order. | |
| * BIND_NONFATAL - The default BIND_IMMEDIATE behavior is to treat all | |
| * unsatisfied symbols as fatal. This flag allows | |
| * binding of unsatisfied code symbols to be deferred | |
| * until use. | |
| * [Perl: For certain libraries, like DCE, deferred | |
| * binding often causes run time problems. Adding | |
| * BIND_NONFATAL to BIND_IMMEDIATE still allows | |
| * unresolved references in situations like this.] | |
| * BIND_NOSTART - Do not call the initializer for the shared library | |
| * when the library is loaded, nor on a future call to | |
| * shl_unload(). | |
| * BIND_VERBOSE - Print verbose messages concerning possible | |
| * unsatisfied symbols. | |
| * | |
| * hp9000s700/hp9000s800: | |
| * BIND_RESTRICTED - Restrict symbols visible by the library to those | |
| * present at library load time. | |
| * DYNAMIC_PATH - Allow the loader to dynamically search for the | |
| * library specified by the path argument. | |
| */ | |
| #ifndef DYNAMIC_PATH | |
| # define DYNAMIC_PATH 0 | |
| #endif | |
| #ifndef BIND_RESTRICTED | |
| # define BIND_RESTRICTED 0 | |
| #endif | |
| #define LT_BIND_FLAGS (BIND_IMMEDIATE | BIND_NONFATAL | DYNAMIC_PATH) | |
| static lt_module | |
| sys_shl_open (loader_data, filename) | |
| lt_user_data loader_data; | |
| const char *filename; | |
| { | |
| static shl_t self = (shl_t) 0; | |
| lt_module module = shl_load (filename, LT_BIND_FLAGS, 0L); | |
| /* Since searching for a symbol against a NULL module handle will also | |
| look in everything else that was already loaded and exported with | |
| the -E compiler flag, we always cache a handle saved before any | |
| modules are loaded. */ | |
| if (!self) | |
| { | |
| lt_ptr address; | |
| shl_findsym (&self, "main", TYPE_UNDEFINED, &address); | |
| } | |
| if (!filename) | |
| { | |
| module = self; | |
| } | |
| else | |
| { | |
| module = shl_load (filename, LT_BIND_FLAGS, 0L); | |
| if (!module) | /* The type of a function used at each iteration of foreach_dirinpath(). */ |
| { | typedef int foreach_callback_func (char *filename, void *data1, |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); | void *data2); |
| } | /* foreachfile_callback itself calls a function of this type: */ |
| } | typedef int file_worker_func (const char *filename, void *data); |
| return module; | |
| static int foreach_dirinpath (const char *search_path, | |
| const char *base_name, | |
| foreach_callback_func *func, | |
| void *data1, void *data2); | |
| static int find_file_callback (char *filename, void *data1, | |
| void *data2); | |
| static int find_handle_callback (char *filename, void *data, | |
| void *ignored); | |
| static int foreachfile_callback (char *filename, void *data1, | |
| void *data2); | |
| static int canonicalize_path (const char *path, char **pcanonical); | |
| static int argzize_path (const char *path, | |
| char **pargz, size_t *pargz_len); | |
| static FILE *find_file (const char *search_path, | |
| const char *base_name, char **pdir); | |
| static lt_dlhandle *find_handle (const char *search_path, | |
| const char *base_name, | |
| lt_dlhandle *handle, | |
| lt_dladvise advise); | |
| static int find_module (lt_dlhandle *handle, const char *dir, | |
| const char *libdir, const char *dlname, | |
| const char *old_name, int installed, | |
| lt_dladvise advise); | |
| static int has_library_ext (const char *filename); | |
| static int load_deplibs (lt_dlhandle handle, char *deplibs); | |
| static int trim (char **dest, const char *str); | |
| static int try_dlopen (lt_dlhandle *handle, | |
| const char *filename, const char *ext, | |
| lt_dladvise advise); | |
| static int tryall_dlopen (lt_dlhandle *handle, | |
| const char *filename, | |
| lt_dladvise padvise, | |
| const lt_dlvtable *vtable); | |
| static int unload_deplibs (lt_dlhandle handle); | |
| static int lt_argz_insert (char **pargz, size_t *pargz_len, | |
| char *before, const char *entry); | |
| static int lt_argz_insertinorder (char **pargz, size_t *pargz_len, | |
| const char *entry); | |
| static int lt_argz_insertdir (char **pargz, size_t *pargz_len, | |
| const char *dirnam, struct dirent *dp); | |
| static int lt_dlpath_insertdir (char **ppath, char *before, | |
| const char *dir); | |
| static int list_files_by_dir (const char *dirnam, | |
| char **pargz, size_t *pargz_len); | |
| static int file_not_found (void); | |
| #ifdef HAVE_LIBDLLOADER | |
| static int loader_init_callback (lt_dlhandle handle); | |
| #endif /* HAVE_LIBDLLOADER */ | |
| static int loader_init (lt_get_vtable *vtable_func, | |
| lt_user_data data); | |
| static char *user_search_path= 0; | |
| static lt_dlhandle handles = 0; | |
| static int initialized = 0; | |
| /* Our memory failure callback sets the error message to be passed back | |
| up to the client, so we must be careful to return from mallocation | |
| callers if allocation fails (as this callback returns!!). */ | |
| void | |
| lt__alloc_die_callback (void) | |
| { | |
| LT__SETERROR (NO_MEMORY); | |
| } | |
| #ifdef HAVE_LIBDLLOADER | |
| /* This function is called to initialise each preloaded module loader, | |
| and hook it into the list of loaders to be used when attempting to | |
| dlopen an application module. */ | |
| static int | |
| loader_init_callback (lt_dlhandle handle) | |
| { | |
| lt_get_vtable *vtable_func = (lt_get_vtable *) lt_dlsym (handle, "get_vtable"); | |
| return loader_init (vtable_func, 0); | |
| } | } |
| #endif /* HAVE_LIBDLLOADER */ | |
| static int | static int |
| sys_shl_close (loader_data, module) | loader_init (lt_get_vtable *vtable_func, lt_user_data data) |
| lt_user_data loader_data; | |
| lt_module module; | |
| { | { |
| const lt_dlvtable *vtable = 0; | |
| int errors = 0; | int errors = 0; |
| if (module && (shl_unload ((shl_t) (module)) != 0)) | if (vtable_func) |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); | |
| ++errors; | |
| } | |
| return errors; | |
| } | |
| static lt_ptr | |
| sys_shl_sym (loader_data, module, symbol) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| const char *symbol; | |
| { | |
| lt_ptr address = NULL; | |
| /* sys_shl_open should never return a NULL module handle */ | |
| if (module == (lt_module) 0) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); | |
| } | |
| else if (!shl_findsym((shl_t*) &module, symbol, TYPE_UNDEFINED, &address)) | |
| { | |
| if (!address) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); | |
| } | |
| } | |
| return address; | |
| } | |
| static struct lt_user_dlloader sys_shl = { | |
| 0, sys_shl_open, sys_shl_close, sys_shl_sym, 0, 0 | |
| }; | |
| #endif /* HAVE_SHL_LOAD */ | |
| /* --- LOADLIBRARY() INTERFACE LOADER --- */ | |
| #ifdef __WINDOWS__ | |
| /* dynamic linking for Win32 */ | |
| #include <windows.h> | |
| /* Forward declaration; required to implement handle search below. */ | |
| static lt_dlhandle handles; | |
| static lt_module | |
| sys_wll_open (loader_data, filename) | |
| lt_user_data loader_data; | |
| const char *filename; | |
| { | |
| lt_dlhandle cur; | |
| lt_module module = NULL; | |
| const char *errormsg = NULL; | |
| char *searchname = NULL; | |
| char *ext; | |
| char self_name_buf[MAX_PATH]; | |
| if (!filename) | |
| { | |
| /* Get the name of main module */ | |
| *self_name_buf = '\0'; | |
| GetModuleFileName (NULL, self_name_buf, sizeof (self_name_buf)); | |
| filename = ext = self_name_buf; | |
| } | |
| else | |
| { | { |
| ext = strrchr (filename, '.'); | vtable = (*vtable_func) (data); |
| } | } |
| if (ext) | /* lt_dlloader_add will LT__SETERROR if it fails. */ |
| { | errors += lt_dlloader_add (vtable); |
| /* FILENAME already has an extension. */ | |
| searchname = lt_estrdup (filename); | |
| } | |
| else | |
| { | |
| /* Append a `.' to stop Windows from adding an | |
| implicit `.dll' extension. */ | |
| searchname = LT_EMALLOC (char, 2+ LT_STRLEN (filename)); | |
| if (searchname) | |
| sprintf (searchname, "%s.", filename); | |
| } | |
| if (!searchname) | |
| return 0; | |
| #if __CYGWIN__ | assert (errors || vtable); |
| { | |
| char wpath[MAX_PATH]; | |
| cygwin_conv_to_full_win32_path(searchname, wpath); | |
| module = LoadLibrary(wpath); | |
| } | |
| #else | |
| module = LoadLibrary (searchname); | |
| #endif | |
| LT_DLFREE (searchname); | |
| /* libltdl expects this function to fail if it is unable | if ((!errors) && vtable->dlloader_init) |
| to physically load the library. Sadly, LoadLibrary | |
| will search the loaded libraries for a match and return | |
| one of them if the path search load fails. | |
| We check whether LoadLibrary is returning a handle to | |
| an already loaded module, and simulate failure if we | |
| find one. */ | |
| LT_DLMUTEX_LOCK (); | |
| cur = handles; | |
| while (cur) | |
| { | { |
| if (!cur->module) | if ((*vtable->dlloader_init) (vtable->dlloader_data)) |
| { | { |
| cur = NULL; | LT__SETERROR (INIT_LOADER); |
| break; | ++errors; |
| } | |
| if (cur->module == module) | |
| { | |
| break; | |
| } | } |
| cur = cur->next; | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| if (cur || !module) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); | |
| module = NULL; | |
| } | |
| return module; | |
| } | |
| static int | |
| sys_wll_close (loader_data, module) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| { | |
| int errors = 0; | |
| if (FreeLibrary(module) == 0) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); | |
| ++errors; | |
| } | |
| return errors; | |
| } | |
| static lt_ptr | |
| sys_wll_sym (loader_data, module, symbol) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| const char *symbol; | |
| { | |
| lt_ptr address = GetProcAddress (module, symbol); | |
| if (!address) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); | |
| } | |
| return address; | |
| } | |
| static struct lt_user_dlloader sys_wll = { | |
| 0, sys_wll_open, sys_wll_close, sys_wll_sym, 0, 0 | |
| }; | |
| #endif /* __WINDOWS__ */ | |
| /* --- LOAD_ADD_ON() INTERFACE LOADER --- */ | |
| #ifdef __BEOS__ | |
| /* dynamic linking for BeOS */ | |
| #include <kernel/image.h> | |
| static lt_module | |
| sys_bedl_open (loader_data, filename) | |
| lt_user_data loader_data; | |
| const char *filename; | |
| { | |
| image_id image = 0; | |
| if (filename) | |
| { | |
| image = load_add_on (filename); | |
| } | |
| else | |
| { | |
| image_info info; | |
| int32 cookie = 0; | |
| if (get_next_image_info (0, &cookie, &info) == B_OK) | |
| image = load_add_on (info.name); | |
| } | |
| if (image <= 0) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); | |
| image = 0; | |
| } | |
| return (lt_module) image; | |
| } | |
| static int | |
| sys_bedl_close (loader_data, module) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| { | |
| int errors = 0; | |
| if (unload_add_on ((image_id) module) != B_OK) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); | |
| ++errors; | |
| } | } |
| return errors; | return errors; |
| } | } |
| static lt_ptr | /* Bootstrap the loader loading with the preopening loader. */ |
| sys_bedl_sym (loader_data, module, symbol) | #define get_vtable preopen_LTX_get_vtable |
| lt_user_data loader_data; | #define preloaded_symbols LT_CONC3(lt_, LTDLOPEN, _LTX_preloaded_symbols) |
| lt_module module; | |
| const char *symbol; | LT_BEGIN_C_DECLS |
| { | LT_SCOPE const lt_dlvtable * get_vtable (lt_user_data data); |
| lt_ptr address = NULL; | LT_END_C_DECLS |
| image_id image = (image_id) module; | #ifdef HAVE_LIBDLLOADER |
| extern LT_DLSYM_CONST lt_dlsymlist preloaded_symbols[]; | |
| if (get_image_symbol (image, symbol, B_SYMBOL_TYPE_ANY, address) != B_OK) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); | |
| address = NULL; | |
| } | |
| return address; | |
| } | |
| static struct lt_user_dlloader sys_bedl = { | |
| 0, sys_bedl_open, sys_bedl_close, sys_bedl_sym, 0, 0 | |
| }; | |
| #endif /* __BEOS__ */ | |
| /* --- DLD_LINK() INTERFACE LOADER --- */ | |
| #if HAVE_DLD | |
| /* dynamic linking with dld */ | |
| #if HAVE_DLD_H | |
| #include <dld.h> | |
| #endif | #endif |
| static lt_module | |
| sys_dld_open (loader_data, filename) | |
| lt_user_data loader_data; | |
| const char *filename; | |
| { | |
| lt_module module = strdup (filename); | |
| if (dld_link (filename) != 0) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_OPEN)); | |
| LT_DLFREE (module); | |
| module = NULL; | |
| } | |
| return module; | |
| } | |
| static int | |
| sys_dld_close (loader_data, module) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| { | |
| int errors = 0; | |
| if (dld_unlink_by_file ((char*)(module), 1) != 0) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CANNOT_CLOSE)); | |
| ++errors; | |
| } | |
| else | |
| { | |
| LT_DLFREE (module); | |
| } | |
| return errors; | |
| } | |
| static lt_ptr | |
| sys_dld_sym (loader_data, module, symbol) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| const char *symbol; | |
| { | |
| lt_ptr address = dld_get_func (symbol); | |
| if (!address) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); | |
| } | |
| return address; | |
| } | |
| static struct lt_user_dlloader sys_dld = { | |
| 0, sys_dld_open, sys_dld_close, sys_dld_sym, 0, 0 | |
| }; | |
| #endif /* HAVE_DLD */ | |
| /* --- DLPREOPEN() INTERFACE LOADER --- */ | |
| /* emulate dynamic linking using preloaded_symbols */ | |
| typedef struct lt_dlsymlists_t | |
| { | |
| struct lt_dlsymlists_t *next; | |
| const lt_dlsymlist *syms; | |
| } lt_dlsymlists_t; | |
| static const lt_dlsymlist *default_preloaded_symbols = NULL; | |
| static lt_dlsymlists_t *preloaded_symbols = NULL; | |
| static int | |
| presym_init (loader_data) | |
| lt_user_data loader_data; | |
| { | |
| int errors = 0; | |
| LT_DLMUTEX_LOCK (); | |
| preloaded_symbols = NULL; | |
| if (default_preloaded_symbols) | |
| { | |
| errors = lt_dlpreload (default_preloaded_symbols); | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | |
| } | |
| static int | |
| presym_free_symlists () | |
| { | |
| lt_dlsymlists_t *lists; | |
| LT_DLMUTEX_LOCK (); | |
| lists = preloaded_symbols; | |
| while (lists) | |
| { | |
| lt_dlsymlists_t *tmp = lists; | |
| lists = lists->next; | |
| LT_DLFREE (tmp); | |
| } | |
| preloaded_symbols = NULL; | |
| LT_DLMUTEX_UNLOCK (); | |
| return 0; | |
| } | |
| static int | |
| presym_exit (loader_data) | |
| lt_user_data loader_data; | |
| { | |
| presym_free_symlists (); | |
| return 0; | |
| } | |
| static int | |
| presym_add_symlist (preloaded) | |
| const lt_dlsymlist *preloaded; | |
| { | |
| lt_dlsymlists_t *tmp; | |
| lt_dlsymlists_t *lists; | |
| int errors = 0; | |
| LT_DLMUTEX_LOCK (); | |
| lists = preloaded_symbols; | |
| while (lists) | |
| { | |
| if (lists->syms == preloaded) | |
| { | |
| goto done; | |
| } | |
| lists = lists->next; | |
| } | |
| tmp = LT_EMALLOC (lt_dlsymlists_t, 1); | |
| if (tmp) | |
| { | |
| memset (tmp, 0, sizeof(lt_dlsymlists_t)); | |
| tmp->syms = preloaded; | |
| tmp->next = preloaded_symbols; | |
| preloaded_symbols = tmp; | |
| } | |
| else | |
| { | |
| ++errors; | |
| } | |
| done: | |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | |
| } | |
| static lt_module | |
| presym_open (loader_data, filename) | |
| lt_user_data loader_data; | |
| const char *filename; | |
| { | |
| lt_dlsymlists_t *lists; | |
| lt_module module = (lt_module) 0; | |
| LT_DLMUTEX_LOCK (); | |
| lists = preloaded_symbols; | |
| if (!lists) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_SYMBOLS)); | |
| goto done; | |
| } | |
| /* Can't use NULL as the reflective symbol header, as NULL is | |
| used to mark the end of the entire symbol list. Self-dlpreopened | |
| symbols follow this magic number, chosen to be an unlikely | |
| clash with a real module name. */ | |
| if (!filename) | |
| { | |
| filename = "@PROGRAM@"; | |
| } | |
| while (lists) | |
| { | |
| const lt_dlsymlist *syms = lists->syms; | |
| while (syms->name) | |
| { | |
| if (!syms->address && strcmp(syms->name, filename) == 0) | |
| { | |
| module = (lt_module) syms; | |
| goto done; | |
| } | |
| ++syms; | |
| } | |
| lists = lists->next; | |
| } | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); | |
| done: | |
| LT_DLMUTEX_UNLOCK (); | |
| return module; | |
| } | |
| static int | |
| presym_close (loader_data, module) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| { | |
| /* Just to silence gcc -Wall */ | |
| module = NULL; | |
| return 0; | |
| } | |
| static lt_ptr | |
| presym_sym (loader_data, module, symbol) | |
| lt_user_data loader_data; | |
| lt_module module; | |
| const char *symbol; | |
| { | |
| lt_dlsymlist *syms = (lt_dlsymlist*) module; | |
| ++syms; | |
| while (syms->address) | |
| { | |
| if (strcmp(syms->name, symbol) == 0) | |
| { | |
| return syms->address; | |
| } | |
| ++syms; | |
| } | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); | |
| return 0; | |
| } | |
| static struct lt_user_dlloader presym = { | |
| 0, presym_open, presym_close, presym_sym, presym_exit, 0 | |
| }; | |
| /* --- DYNAMIC MODULE LOADING --- */ | |
| /* The type of a function used at each iteration of foreach_dirinpath(). */ | |
| typedef int foreach_callback_func LT_PARAMS((char *filename, lt_ptr data1, | |
| lt_ptr data2)); | |
| static int foreach_dirinpath LT_PARAMS((const char *search_path, | |
| const char *base_name, | |
| foreach_callback_func *func, | |
| lt_ptr data1, lt_ptr data2)); | |
| static int find_file_callback LT_PARAMS((char *filename, lt_ptr data, | |
| lt_ptr ignored)); | |
| static int find_handle_callback LT_PARAMS((char *filename, lt_ptr data, | |
| lt_ptr ignored)); | |
| static int foreachfile_callback LT_PARAMS((char *filename, lt_ptr data1, | |
| lt_ptr data2)); | |
| static int canonicalize_path LT_PARAMS((const char *path, | |
| char **pcanonical)); | |
| static int argzize_path LT_PARAMS((const char *path, | |
| char **pargz, | |
| size_t *pargz_len)); | |
| static FILE *find_file LT_PARAMS((const char *search_path, | |
| const char *base_name, | |
| char **pdir)); | |
| static lt_dlhandle *find_handle LT_PARAMS((const char *search_path, | |
| const char *base_name, | |
| lt_dlhandle *handle)); | |
| static int find_module LT_PARAMS((lt_dlhandle *handle, | |
| const char *dir, | |
| const char *libdir, | |
| const char *dlname, | |
| const char *old_name, | |
| int installed)); | |
| static int free_vars LT_PARAMS((char *dlname, char *oldname, | |
| char *libdir, char *deplibs)); | |
| static int load_deplibs LT_PARAMS((lt_dlhandle handle, | |
| char *deplibs)); | |
| static int trim LT_PARAMS((char **dest, | |
| const char *str)); | |
| static int try_dlopen LT_PARAMS((lt_dlhandle *handle, | |
| const char *filename)); | |
| static int tryall_dlopen LT_PARAMS((lt_dlhandle *handle, | |
| const char *filename)); | |
| static int unload_deplibs LT_PARAMS((lt_dlhandle handle)); | |
| static int lt_argz_insert LT_PARAMS((char **pargz, | |
| size_t *pargz_len, | |
| char *before, | |
| const char *entry)); | |
| static int lt_argz_insertinorder LT_PARAMS((char **pargz, | |
| size_t *pargz_len, | |
| const char *entry)); | |
| static int lt_argz_insertdir LT_PARAMS((char **pargz, | |
| size_t *pargz_len, | |
| const char *dirnam, | |
| struct dirent *dp)); | |
| static int lt_dlpath_insertdir LT_PARAMS((char **ppath, | |
| char *before, | |
| const char *dir)); | |
| static int list_files_by_dir LT_PARAMS((const char *dirnam, | |
| char **pargz, | |
| size_t *pargz_len)); | |
| static int file_not_found LT_PARAMS((void)); | |
| static char *user_search_path= NULL; | |
| static lt_dlloader *loaders = NULL; | |
| static lt_dlhandle handles = NULL; | |
| static int initialized = 0; | |
| /* Initialize libltdl. */ | /* Initialize libltdl. */ |
| int | int |
| lt_dlinit () | lt_dlinit (void) |
| { | { |
| int errors = 0; | int errors = 0; |
| LT_DLMUTEX_LOCK (); | |
| /* Initialize only at first call. */ | /* Initialize only at first call. */ |
| if (++initialized == 1) | if (++initialized == 1) |
| { | { |
| handles = NULL; | lt__alloc_die = lt__alloc_die_callback; |
| user_search_path = NULL; /* empty search path */ | handles = 0; |
| user_search_path = 0; /* empty search path */ | |
| #if HAVE_LIBDL && !defined(__CYGWIN__) | /* First set up the statically loaded preload module loader, so |
| errors += lt_dlloader_add (lt_dlloader_next (0), &sys_dl, "dlopen"); | we can use it to preopen the other loaders we linked in at |
| #endif | compile time. */ |
| #if HAVE_SHL_LOAD | errors += loader_init (get_vtable, 0); |
| errors += lt_dlloader_add (lt_dlloader_next (0), &sys_shl, "dlopen"); | |
| #endif | |
| #ifdef __WINDOWS__ | |
| errors += lt_dlloader_add (lt_dlloader_next (0), &sys_wll, "dlopen"); | |
| #endif | |
| #ifdef __BEOS__ | |
| errors += lt_dlloader_add (lt_dlloader_next (0), &sys_bedl, "dlopen"); | |
| #endif | |
| #if HAVE_DLD | |
| errors += lt_dlloader_add (lt_dlloader_next (0), &sys_dld, "dld"); | |
| #endif | |
| errors += lt_dlloader_add (lt_dlloader_next (0), &presym, "dlpreload"); | |
| if (presym_init (presym.dlloader_data)) | /* Now open all the preloaded module loaders, so the application |
| can use _them_ to lt_dlopen its own modules. */ | |
| #ifdef HAVE_LIBDLLOADER | |
| if (!errors) | |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INIT_LOADER)); | errors += lt_dlpreload (preloaded_symbols); |
| ++errors; | |
| } | } |
| else if (errors != 0) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (DLOPEN_NOT_SUPPORTED)); | |
| ++errors; | |
| } | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | |
| } | |
| int | |
| lt_dlpreload (preloaded) | |
| const lt_dlsymlist *preloaded; | |
| { | |
| int errors = 0; | |
| if (preloaded) | if (!errors) |
| { | |
| errors = presym_add_symlist (preloaded); | |
| } | |
| else | |
| { | |
| presym_free_symlists(); | |
| LT_DLMUTEX_LOCK (); | |
| if (default_preloaded_symbols) | |
| { | { |
| errors = lt_dlpreload (default_preloaded_symbols); | errors += lt_dlpreload_open (LT_STR(LTDLOPEN), loader_init_callback); |
| } | } |
| LT_DLMUTEX_UNLOCK (); | #endif /* HAVE_LIBDLLOADER */ |
| } | } |
| return errors; | #ifdef LT_DEBUG_LOADERS |
| } | lt_dlloader_dump(); |
| #endif | |
| int | return errors; |
| lt_dlpreload_default (preloaded) | |
| const lt_dlsymlist *preloaded; | |
| { | |
| LT_DLMUTEX_LOCK (); | |
| default_preloaded_symbols = preloaded; | |
| LT_DLMUTEX_UNLOCK (); | |
| return 0; | |
| } | } |
| int | int |
| lt_dlexit () | lt_dlexit (void) |
| { | { |
| /* shut down libltdl */ | /* shut down libltdl */ |
| lt_dlloader *loader; | lt_dlloader *loader = 0; |
| lt_dlhandle handle = handles; | |
| int errors = 0; | int errors = 0; |
| LT_DLMUTEX_LOCK (); | |
| loader = loaders; | |
| if (!initialized) | if (!initialized) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SHUTDOWN)); | LT__SETERROR (SHUTDOWN); |
| ++errors; | ++errors; |
| goto done; | goto done; |
| } | } |
| Line 1826 lt_dlexit () | Line 287 lt_dlexit () |
| } | } |
| /* close all modules */ | /* close all modules */ |
| for (level = 1; handles; ++level) | for (level = 1; handle; ++level) |
| { | { |
| lt_dlhandle cur = handles; | lt_dlhandle cur = handles; |
| int saw_nonresident = 0; | int saw_nonresident = 0; |
| Line 1836 lt_dlexit () | Line 297 lt_dlexit () |
| lt_dlhandle tmp = cur; | lt_dlhandle tmp = cur; |
| cur = cur->next; | cur = cur->next; |
| if (!LT_DLIS_RESIDENT (tmp)) | if (!LT_DLIS_RESIDENT (tmp)) |
| saw_nonresident = 1; | |
| if (!LT_DLIS_RESIDENT (tmp) && tmp->info.ref_count <= level) | |
| { | { |
| if (lt_dlclose (tmp)) | saw_nonresident = 1; |
| if (tmp->info.ref_count <= level) | |
| { | { |
| ++errors; | if (lt_dlclose (tmp)) |
| { | |
| ++errors; | |
| } | |
| /* Make sure that the handle pointed to by 'cur' still exists. | |
| lt_dlclose recursively closes dependent libraries which removes | |
| them from the linked list. One of these might be the one | |
| pointed to by 'cur'. */ | |
| if (cur) | |
| { | |
| for (tmp = handles; tmp; tmp = tmp->next) | |
| if (tmp == cur) | |
| break; | |
| if (! tmp) | |
| cur = handles; | |
| } | |
| } | } |
| } | } |
| } | } |
| Line 1850 lt_dlexit () | Line 325 lt_dlexit () |
| break; | break; |
| } | } |
| /* When removing loaders, we can only find out failure by testing | |
| the error string, so avoid a spurious one from an earlier | |
| failed command. */ | |
| if (!errors) | |
| LT__SETERRORSTR (0); | |
| /* close all loaders */ | /* close all loaders */ |
| while (loader) | for (loader = (lt_dlloader *) lt_dlloader_next (NULL); loader;) |
| { | { |
| lt_dlloader *next = loader->next; | lt_dlloader *next = (lt_dlloader *) lt_dlloader_next (loader); |
| lt_user_data data = loader->dlloader_data; | lt_dlvtable *vtable = (lt_dlvtable *) lt_dlloader_get (loader); |
| if (loader->dlloader_exit && loader->dlloader_exit (data)) | |
| if ((vtable = lt_dlloader_remove ((char *) vtable->name))) | |
| { | { |
| ++errors; | FREE (vtable); |
| } | |
| else | |
| { | |
| /* ignore errors due to resident modules */ | |
| const char *err; | |
| LT__GETERROR (err); | |
| if (err) | |
| ++errors; | |
| } | } |
| LT_DLMEM_REASSIGN (loader, next); | loader = next; |
| } | } |
| loaders = NULL; | |
| FREE(user_search_path); | |
| } | } |
| done: | done: |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | return errors; |
| } | } |
| /* Try VTABLE or, if VTABLE is NULL, all available loaders for FILENAME. | |
| If the library is not successfully loaded, return non-zero. Otherwise, | |
| the dlhandle is stored at the address given in PHANDLE. */ | |
| static int | static int |
| tryall_dlopen (handle, filename) | tryall_dlopen (lt_dlhandle *phandle, const char *filename, |
| lt_dlhandle *handle; | lt_dladvise advise, const lt_dlvtable *vtable) |
| const char *filename; | { |
| { | lt_dlhandle handle = handles; |
| lt_dlhandle cur; | const char * saved_error = 0; |
| lt_dlloader *loader; | int errors = 0; |
| const char *saved_error; | |
| int errors = 0; | |
| LT_DLMUTEX_GETERROR (saved_error); | #ifdef LT_DEBUG_LOADERS |
| LT_DLMUTEX_LOCK (); | fprintf (stderr, "tryall_dlopen (%s, %s)\n", |
| filename ? filename : "(null)", | |
| vtable ? vtable->name : "(ALL)"); | |
| #endif | |
| cur = handles; | LT__GETERROR (saved_error); |
| loader = loaders; | |
| /* check whether the module was already opened */ | /* check whether the module was already opened */ |
| while (cur) | for (;handle; handle = handle->next) |
| { | { |
| /* try to dlopen the program itself? */ | if ((handle->info.filename == filename) /* dlopen self: 0 == 0 */ |
| if (!cur->info.filename && !filename) | || (handle->info.filename && filename |
| && streq (handle->info.filename, filename))) | |
| { | { |
| break; | break; |
| } | } |
| if (cur->info.filename && filename | |
| && strcmp (cur->info.filename, filename) == 0) | |
| { | |
| break; | |
| } | |
| cur = cur->next; | |
| } | } |
| if (cur) | if (handle) |
| { | { |
| ++cur->info.ref_count; | ++handle->info.ref_count; |
| *handle = cur; | *phandle = handle; |
| goto done; | goto done; |
| } | } |
| cur = *handle; | handle = *phandle; |
| if (filename) | if (filename) |
| { | { |
| cur->info.filename = lt_estrdup (filename); | /* Comment out the check of file permissions using access. |
| if (!cur->info.filename) | This call seems to always return -1 with error EACCES. |
| */ | |
| /* We need to catch missing file errors early so that | |
| file_not_found() can detect what happened. | |
| if (access (filename, R_OK) != 0) | |
| { | |
| LT__SETERROR (FILE_NOT_FOUND); | |
| ++errors; | |
| goto done; | |
| } */ | |
| handle->info.filename = lt__strdup (filename); | |
| if (!handle->info.filename) | |
| { | { |
| ++errors; | ++errors; |
| goto done; | goto done; |
| Line 1923 tryall_dlopen (handle, filename) | Line 422 tryall_dlopen (handle, filename) |
| } | } |
| else | else |
| { | { |
| cur->info.filename = NULL; | handle->info.filename = 0; |
| } | } |
| while (loader) | { |
| { | lt_dlloader loader = lt_dlloader_next (0); |
| lt_user_data data = loader->dlloader_data; | const lt_dlvtable *loader_vtable; |
| cur->module = loader->module_open (data, filename); | do |
| { | |
| if (vtable) | |
| loader_vtable = vtable; | |
| else | |
| loader_vtable = lt_dlloader_get (loader); | |
| #ifdef LT_DEBUG_LOADERS | |
| fprintf (stderr, "Calling %s->module_open (%s)\n", | |
| (loader_vtable && loader_vtable->name) ? loader_vtable->name : "(null)", | |
| filename ? filename : "(null)"); | |
| #endif | |
| handle->module = (*loader_vtable->module_open) (loader_vtable->dlloader_data, | |
| filename, advise); | |
| #ifdef LT_DEBUG_LOADERS | |
| fprintf (stderr, " Result: %s\n", | |
| handle->module ? "Success" : "Failed"); | |
| #endif | |
| if (cur->module != NULL) | if (handle->module != 0) |
| { | { |
| break; | if (advise) |
| } | { |
| loader = loader->next; | handle->info.is_resident = advise->is_resident; |
| } | handle->info.is_symglobal = advise->is_symglobal; |
| handle->info.is_symlocal = advise->is_symlocal; | |
| } | |
| break; | |
| } | |
| } | |
| while (!vtable && (loader = lt_dlloader_next (loader))); | |
| if (!loader) | /* If VTABLE was given but couldn't open the module, or VTABLE wasn't |
| { | given but we exhausted all loaders without opening the module, bail |
| LT_DLFREE (cur->info.filename); | out! */ |
| ++errors; | if ((vtable && !handle->module) |
| goto done; | || (!vtable && !loader)) |
| } | { |
| FREE (handle->info.filename); | |
| ++errors; | |
| goto done; | |
| } | |
| cur->loader = loader; | handle->vtable = loader_vtable; |
| LT_DLMUTEX_SETERROR (saved_error); | } |
| done: | LT__SETERRORSTR (saved_error); |
| LT_DLMUTEX_UNLOCK (); | |
| done: | |
| return errors; | return errors; |
| } | } |
| static int | static int |
| tryall_dlopen_module (handle, prefix, dirname, dlname) | tryall_dlopen_module (lt_dlhandle *handle, const char *prefix, |
| lt_dlhandle *handle; | const char *dirname, const char *dlname, |
| const char *prefix; | lt_dladvise advise) |
| const char *dirname; | |
| const char *dlname; | |
| { | { |
| int error = 0; | int error = 0; |
| char *filename = NULL; | char *filename = 0; |
| size_t filename_len = 0; | size_t filename_len = 0; |
| size_t dirname_len = LT_STRLEN (dirname); | size_t dirname_len = LT_STRLEN (dirname); |
| assert (handle); | assert (handle); |
| assert (dirname); | assert (dirname); |
| assert (dlname); | assert (dlname); |
| #ifdef LT_DIRSEP_CHAR | #if defined(LT_DIRSEP_CHAR) |
| /* Only canonicalized names (i.e. with DIRSEP chars already converted) | /* Only canonicalized names (i.e. with DIRSEP chars already converted) |
| should make it into this function: */ | should make it into this function: */ |
| assert (strchr (dirname, LT_DIRSEP_CHAR) == NULL); | assert (strchr (dirname, LT_DIRSEP_CHAR) == 0); |
| #endif | #endif |
| if (dirname[dirname_len -1] == '/') | if (dirname_len > 0) |
| --dirname_len; | if (dirname[dirname_len -1] == '/') |
| --dirname_len; | |
| filename_len = dirname_len + 1 + LT_STRLEN (dlname); | filename_len = dirname_len + 1 + LT_STRLEN (dlname); |
| /* Allocate memory, and combine DIRNAME and MODULENAME into it. | /* Allocate memory, and combine DIRNAME and MODULENAME into it. |
| The PREFIX (if any) is handled below. */ | The PREFIX (if any) is handled below. */ |
| filename = LT_EMALLOC (char, dirname_len + 1 + filename_len + 1); | filename = MALLOC (char, filename_len + 1); |
| if (!filename) | if (!filename) |
| return 1; | return 1; |
| Line 1993 tryall_dlopen_module (handle, prefix, di | Line 519 tryall_dlopen_module (handle, prefix, di |
| shuffled. Otherwise, attempt to open FILENAME as a module. */ | shuffled. Otherwise, attempt to open FILENAME as a module. */ |
| if (prefix) | if (prefix) |
| { | { |
| error += tryall_dlopen_module (handle, | error += tryall_dlopen_module (handle, (const char *) 0, |
| (const char *) 0, prefix, filename); | prefix, filename, advise); |
| } | } |
| else if (tryall_dlopen (handle, filename) != 0) | else if (tryall_dlopen (handle, filename, advise, 0) != 0) |
| { | { |
| ++error; | ++error; |
| } | } |
| LT_DLFREE (filename); | FREE (filename); |
| return error; | return error; |
| } | } |
| static int | static int |
| find_module (handle, dir, libdir, dlname, old_name, installed) | find_module (lt_dlhandle *handle, const char *dir, const char *libdir, |
| lt_dlhandle *handle; | const char *dlname, const char *old_name, int installed, |
| const char *dir; | lt_dladvise advise) |
| const char *libdir; | |
| const char *dlname; | |
| const char *old_name; | |
| int installed; | |
| { | { |
| /* Try to open the old library first; if it was dlpreopened, | /* Try to open the old library first; if it was dlpreopened, |
| we want the preopened version of it, even if a dlopenable | we want the preopened version of it, even if a dlopenable |
| module is available. */ | module is available. */ |
| if (old_name && tryall_dlopen (handle, old_name) == 0) | if (old_name && tryall_dlopen (handle, old_name, |
| advise, lt_dlloader_find ("lt_preopen") ) == 0) | |
| { | { |
| return 0; | return 0; |
| } | } |
| Line 2028 find_module (handle, dir, libdir, dlname | Line 551 find_module (handle, dir, libdir, dlname |
| /* try to open the installed module */ | /* try to open the installed module */ |
| if (installed && libdir) | if (installed && libdir) |
| { | { |
| if (tryall_dlopen_module (handle, | if (tryall_dlopen_module (handle, (const char *) 0, |
| (const char *) 0, libdir, dlname) == 0) | libdir, dlname, advise) == 0) |
| return 0; | return 0; |
| } | } |
| /* try to open the not-installed module */ | /* try to open the not-installed module */ |
| if (!installed) | if (!installed) |
| { | { |
| if (tryall_dlopen_module (handle, dir, objdir, dlname) == 0) | if (tryall_dlopen_module (handle, dir, objdir, |
| dlname, advise) == 0) | |
| return 0; | return 0; |
| } | } |
| /* maybe it was moved to another directory */ | /* maybe it was moved to another directory */ |
| { | { |
| if (tryall_dlopen_module (handle, | if (dir && (tryall_dlopen_module (handle, (const char *) 0, |
| (const char *) 0, dir, dlname) == 0) | dir, dlname, advise) == 0)) |
| return 0; | return 0; |
| } | } |
| } | } |
| Line 2053 find_module (handle, dir, libdir, dlname | Line 577 find_module (handle, dir, libdir, dlname |
| static int | static int |
| canonicalize_path (path, pcanonical) | canonicalize_path (const char *path, char **pcanonical) |
| const char *path; | |
| char **pcanonical; | |
| { | { |
| char *canonical = NULL; | char *canonical = 0; |
| assert (path && *path); | assert (path && *path); |
| assert (pcanonical); | assert (pcanonical); |
| canonical = LT_EMALLOC (char, 1+ LT_STRLEN (path)); | canonical = MALLOC (char, 1+ LT_STRLEN (path)); |
| if (!canonical) | if (!canonical) |
| return 1; | return 1; |
| Line 2084 canonicalize_path (path, pcanonical) | Line 606 canonicalize_path (path, pcanonical) |
| /* Anything other than a directory separator is copied verbatim. */ | /* Anything other than a directory separator is copied verbatim. */ |
| if ((path[src] != '/') | if ((path[src] != '/') |
| #ifdef LT_DIRSEP_CHAR | #if defined(LT_DIRSEP_CHAR) |
| && (path[src] != LT_DIRSEP_CHAR) | && (path[src] != LT_DIRSEP_CHAR) |
| #endif | #endif |
| ) | ) |
| Line 2096 canonicalize_path (path, pcanonical) | Line 618 canonicalize_path (path, pcanonical) |
| NULL terminator. */ | NULL terminator. */ |
| else if ((path[1+ src] != LT_PATHSEP_CHAR) | else if ((path[1+ src] != LT_PATHSEP_CHAR) |
| && (path[1+ src] != LT_EOS_CHAR) | && (path[1+ src] != LT_EOS_CHAR) |
| #ifdef LT_DIRSEP_CHAR | #if defined(LT_DIRSEP_CHAR) |
| && (path[1+ src] != LT_DIRSEP_CHAR) | && (path[1+ src] != LT_DIRSEP_CHAR) |
| #endif | #endif |
| && (path[1+ src] != '/')) | && (path[1+ src] != '/')) |
| Line 2116 canonicalize_path (path, pcanonical) | Line 638 canonicalize_path (path, pcanonical) |
| } | } |
| static int | static int |
| argzize_path (path, pargz, pargz_len) | argzize_path (const char *path, char **pargz, size_t *pargz_len) |
| const char *path; | |
| char **pargz; | |
| size_t *pargz_len; | |
| { | { |
| error_t error; | error_t error; |
| Line 2132 argzize_path (path, pargz, pargz_len) | Line 651 argzize_path (path, pargz, pargz_len) |
| switch (error) | switch (error) |
| { | { |
| case ENOMEM: | case ENOMEM: |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); | LT__SETERROR (NO_MEMORY); |
| break; | break; |
| default: | default: |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (UNKNOWN)); | LT__SETERROR (UNKNOWN); |
| break; | break; |
| } | } |
| Line 2150 argzize_path (path, pargz, pargz_len) | Line 669 argzize_path (path, pargz, pargz_len) |
| non-zero or all elements are exhausted. If BASE_NAME is non-NULL, | non-zero or all elements are exhausted. If BASE_NAME is non-NULL, |
| it is appended to each SEARCH_PATH element before FUNC is called. */ | it is appended to each SEARCH_PATH element before FUNC is called. */ |
| static int | static int |
| foreach_dirinpath (search_path, base_name, func, data1, data2) | foreach_dirinpath (const char *search_path, const char *base_name, |
| const char *search_path; | foreach_callback_func *func, void *data1, void *data2) |
| const char *base_name; | |
| foreach_callback_func *func; | |
| lt_ptr data1; | |
| lt_ptr data2; | |
| { | { |
| int result = 0; | int result = 0; |
| int filenamesize = 0; | size_t filenamesize = 0; |
| size_t lenbase = LT_STRLEN (base_name); | size_t lenbase = LT_STRLEN (base_name); |
| size_t argz_len = 0; | size_t argz_len = 0; |
| char *argz = NULL; | char *argz = 0; |
| char *filename = NULL; | char *filename = 0; |
| char *canonical = NULL; | char *canonical = 0; |
| LT_DLMUTEX_LOCK (); | |
| if (!search_path || !*search_path) | if (!search_path || !*search_path) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); | LT__SETERROR (FILE_NOT_FOUND); |
| goto cleanup; | goto cleanup; |
| } | } |
| Line 2180 foreach_dirinpath (search_path, base_nam | Line 693 foreach_dirinpath (search_path, base_nam |
| goto cleanup; | goto cleanup; |
| { | { |
| char *dir_name = NULL; | char *dir_name = 0; |
| while ((dir_name = argz_next (argz, argz_len, dir_name))) | while ((dir_name = argz_next (argz, argz_len, dir_name))) |
| { | { |
| size_t lendir = LT_STRLEN (dir_name); | size_t lendir = LT_STRLEN (dir_name); |
| if (lendir +1 +lenbase >= filenamesize) | if (1+ lendir + lenbase >= filenamesize) |
| { | { |
| LT_DLFREE (filename); | FREE (filename); |
| filenamesize = lendir +1 +lenbase +1; /* "/d" + '/' + "f" + '\0' */ | filenamesize = 1+ lendir + 1+ lenbase; /* "/d" + '/' + "f" + '\0' */ |
| filename = LT_EMALLOC (char, filenamesize); | filename = MALLOC (char, filenamesize); |
| if (!filename) | if (!filename) |
| goto cleanup; | goto cleanup; |
| } | } |
| Line 2212 foreach_dirinpath (search_path, base_nam | Line 725 foreach_dirinpath (search_path, base_nam |
| } | } |
| cleanup: | cleanup: |
| LT_DLFREE (argz); | FREE (argz); |
| LT_DLFREE (canonical); | FREE (canonical); |
| LT_DLFREE (filename); | FREE (filename); |
| LT_DLMUTEX_UNLOCK (); | |
| return result; | return result; |
| } | } |
| Line 2225 foreach_dirinpath (search_path, base_nam | Line 736 foreach_dirinpath (search_path, base_nam |
| in DATA1, and the opened FILE* structure address in DATA2. Otherwise | in DATA1, and the opened FILE* structure address in DATA2. Otherwise |
| DATA1 is unchanged, but DATA2 is set to a pointer to NULL. */ | DATA1 is unchanged, but DATA2 is set to a pointer to NULL. */ |
| static int | static int |
| find_file_callback (filename, data1, data2) | find_file_callback (char *filename, void *data1, void *data2) |
| char *filename; | |
| lt_ptr data1; | |
| lt_ptr data2; | |
| { | { |
| char **pdir = (char **) data1; | char **pdir = (char **) data1; |
| FILE **pfile = (FILE **) data2; | FILE **pfile = (FILE **) data2; |
| Line 2245 find_file_callback (filename, data1, dat | Line 753 find_file_callback (filename, data1, dat |
| if (dirend > filename) | if (dirend > filename) |
| *dirend = LT_EOS_CHAR; | *dirend = LT_EOS_CHAR; |
| LT_DLFREE (*pdir); | FREE (*pdir); |
| *pdir = lt_estrdup (filename); | *pdir = lt__strdup (filename); |
| is_done = (*pdir == NULL) ? -1 : 1; | is_done = (*pdir == 0) ? -1 : 1; |
| } | } |
| return is_done; | return is_done; |
| } | } |
| static FILE * | static FILE * |
| find_file (search_path, base_name, pdir) | find_file (const char *search_path, const char *base_name, char **pdir) |
| const char *search_path; | |
| const char *base_name; | |
| char **pdir; | |
| { | { |
| FILE *file = NULL; | FILE *file = 0; |
| foreach_dirinpath (search_path, base_name, find_file_callback, pdir, &file); | foreach_dirinpath (search_path, base_name, find_file_callback, pdir, &file); |
| Line 2267 find_file (search_path, base_name, pdir) | Line 772 find_file (search_path, base_name, pdir) |
| } | } |
| static int | static int |
| find_handle_callback (filename, data, ignored) | find_handle_callback (char *filename, void *data, void *data2) |
| char *filename; | |
| lt_ptr data; | |
| lt_ptr ignored; | |
| { | { |
| lt_dlhandle *handle = (lt_dlhandle *) data; | lt_dlhandle *phandle = (lt_dlhandle *) data; |
| int notfound = access (filename, R_OK); | int notfound = access (filename, R_OK); |
| lt_dladvise advise = (lt_dladvise) data2; | |
| /* Bail out if file cannot be read... */ | /* Bail out if file cannot be read... */ |
| if (notfound) | if (notfound) |
| Line 2281 find_handle_callback (filename, data, ig | Line 784 find_handle_callback (filename, data, ig |
| /* Try to dlopen the file, but do not continue searching in any | /* Try to dlopen the file, but do not continue searching in any |
| case. */ | case. */ |
| if (tryall_dlopen (handle, filename) != 0) | if (tryall_dlopen (phandle, filename, advise, 0) != 0) |
| *handle = NULL; | *phandle = 0; |
| return 1; | return 1; |
| } | } |
| Line 2290 find_handle_callback (filename, data, ig | Line 793 find_handle_callback (filename, data, ig |
| /* If HANDLE was found return it, otherwise return 0. If HANDLE was | /* If HANDLE was found return it, otherwise return 0. If HANDLE was |
| found but could not be opened, *HANDLE will be set to 0. */ | found but could not be opened, *HANDLE will be set to 0. */ |
| static lt_dlhandle * | static lt_dlhandle * |
| find_handle (search_path, base_name, handle) | find_handle (const char *search_path, const char *base_name, |
| const char *search_path; | lt_dlhandle *phandle, lt_dladvise advise) |
| const char *base_name; | |
| lt_dlhandle *handle; | |
| { | { |
| if (!search_path) | if (!search_path) |
| return 0; | return 0; |
| if (!foreach_dirinpath (search_path, base_name, find_handle_callback, | if (!foreach_dirinpath (search_path, base_name, find_handle_callback, |
| handle, 0)) | phandle, advise)) |
| return 0; | return 0; |
| return handle; | return phandle; |
| } | } |
| #if !defined(LTDL_DLOPEN_DEPLIBS) | |
| static int | static int |
| load_deplibs (handle, deplibs) | load_deplibs (lt_dlhandle handle, char * LT__UNUSED deplibs) |
| lt_dlhandle handle; | |
| char *deplibs; | |
| { | { |
| #if LTDL_DLOPEN_DEPLIBS | handle->depcount = 0; |
| char *p, *save_search_path = NULL; | return 0; |
| } | |
| #else /* defined(LTDL_DLOPEN_DEPLIBS) */ | |
| static int | |
| load_deplibs (lt_dlhandle handle, char *deplibs) | |
| { | |
| char *p, *save_search_path = 0; | |
| int depcount = 0; | int depcount = 0; |
| int i; | int i; |
| char **names = NULL; | char **names = 0; |
| #endif | |
| int errors = 0; | int errors = 0; |
| handle->depcount = 0; | handle->depcount = 0; |
| #if LTDL_DLOPEN_DEPLIBS | |
| if (!deplibs) | if (!deplibs) |
| { | { |
| return errors; | return errors; |
| } | } |
| ++errors; | ++errors; |
| LT_DLMUTEX_LOCK (); | |
| if (user_search_path) | if (user_search_path) |
| { | { |
| save_search_path = lt_estrdup (user_search_path); | save_search_path = lt__strdup (user_search_path); |
| if (!save_search_path) | if (!save_search_path) |
| goto cleanup; | goto cleanup; |
| } | } |
| Line 2339 load_deplibs (handle, deplibs) | Line 843 load_deplibs (handle, deplibs) |
| p = deplibs; | p = deplibs; |
| while (*p) | while (*p) |
| { | { |
| if (!isspace ((int) *p)) | if (!isspace ((unsigned char) *p)) |
| { | { |
| char *end = p+1; | char *end = p+1; |
| while (*end && !isspace((int) *end)) | while (*end && !isspace((unsigned char) *end)) |
| { | { |
| ++end; | ++end; |
| } | } |
| Line 2350 load_deplibs (handle, deplibs) | Line 854 load_deplibs (handle, deplibs) |
| if (strncmp(p, "-L", 2) == 0 || strncmp(p, "-R", 2) == 0) | if (strncmp(p, "-L", 2) == 0 || strncmp(p, "-R", 2) == 0) |
| { | { |
| char save = *end; | char save = *end; |
| *end = '\0'; /* set a temporary string terminator */ | *end = 0; /* set a temporary string terminator */ |
| if (lt_dladdsearchdir(p+2)) | if (lt_dladdsearchdir(p+2)) |
| { | { |
| goto cleanup; | goto cleanup; |
| Line 2370 load_deplibs (handle, deplibs) | Line 874 load_deplibs (handle, deplibs) |
| } | } |
| } | } |
| /* restore the old search path */ | |
| LT_DLFREE (user_search_path); | |
| user_search_path = save_search_path; | |
| LT_DLMUTEX_UNLOCK (); | |
| if (!depcount) | if (!depcount) |
| { | { |
| Line 2382 load_deplibs (handle, deplibs) | Line 881 load_deplibs (handle, deplibs) |
| goto cleanup; | goto cleanup; |
| } | } |
| names = LT_EMALLOC (char *, depcount * sizeof (char*)); | names = MALLOC (char *, depcount); |
| if (!names) | if (!names) |
| goto cleanup; | goto cleanup; |
| Line 2391 load_deplibs (handle, deplibs) | Line 890 load_deplibs (handle, deplibs) |
| p = deplibs; | p = deplibs; |
| while (*p) | while (*p) |
| { | { |
| if (isspace ((int) *p)) | if (isspace ((unsigned char) *p)) |
| { | { |
| ++p; | ++p; |
| } | } |
| else | else |
| { | { |
| char *end = p+1; | char *end = p+1; |
| while (*end && !isspace ((int) *end)) | while (*end && !isspace ((unsigned char) *end)) |
| { | { |
| ++end; | ++end; |
| } | } |
| Line 2407 load_deplibs (handle, deplibs) | Line 906 load_deplibs (handle, deplibs) |
| { | { |
| char *name; | char *name; |
| char save = *end; | char save = *end; |
| *end = '\0'; /* set a temporary string terminator */ | *end = 0; /* set a temporary string terminator */ |
| if (strncmp(p, "-l", 2) == 0) | if (strncmp(p, "-l", 2) == 0) |
| { | { |
| size_t name_len = 3+ /* "lib" */ LT_STRLEN (p + 2); | size_t name_len = 3+ /* "lib" */ LT_STRLEN (p + 2); |
| name = LT_EMALLOC (char, 1+ name_len); | name = MALLOC (char, 1+ name_len); |
| if (name) | if (name) |
| sprintf (name, "lib%s", p+2); | sprintf (name, "lib%s", p+2); |
| } | } |
| else | else |
| name = lt_estrdup(p); | name = lt__strdup(p); |
| if (!name) | if (!name) |
| goto cleanup_names; | goto cleanup_names; |
| Line 2435 load_deplibs (handle, deplibs) | Line 934 load_deplibs (handle, deplibs) |
| later on if the loaded module cannot resolve all of its symbols. */ | later on if the loaded module cannot resolve all of its symbols. */ |
| if (depcount) | if (depcount) |
| { | { |
| lt_dlhandle cur = handle; | |
| int j = 0; | int j = 0; |
| handle->deplibs = (lt_dlhandle*) LT_EMALLOC (lt_dlhandle *, depcount); | cur->deplibs = MALLOC (lt_dlhandle, depcount); |
| if (!handle->deplibs) | if (!cur->deplibs) |
| goto cleanup; | goto cleanup_names; |
| for (i = 0; i < depcount; ++i) | for (i = 0; i < depcount; ++i) |
| { | { |
| handle->deplibs[j] = lt_dlopenext(names[depcount-1-i]); | cur->deplibs[j] = lt_dlopenext(names[depcount-1-i]); |
| if (handle->deplibs[j]) | if (cur->deplibs[j]) |
| { | { |
| ++j; | ++j; |
| } | } |
| } | } |
| handle->depcount = j; /* Number of successfully loaded deplibs */ | cur->depcount = j; /* Number of successfully loaded deplibs */ |
| errors = 0; | errors = 0; |
| } | } |
| cleanup_names: | cleanup_names: |
| for (i = 0; i < depcount; ++i) | for (i = 0; i < depcount; ++i) |
| { | { |
| LT_DLFREE (names[i]); | FREE (names[i]); |
| } | } |
| cleanup: | cleanup: |
| LT_DLFREE (names); | FREE (names); |
| #endif | /* restore the old search path */ |
| if (save_search_path) { | |
| MEMREASSIGN (user_search_path, save_search_path); | |
| } | |
| return errors; | return errors; |
| } | } |
| #endif /* defined(LTDL_DLOPEN_DEPLIBS) */ | |
| static int | static int |
| unload_deplibs (handle) | unload_deplibs (lt_dlhandle handle) |
| lt_dlhandle handle; | |
| { | { |
| int i; | int i; |
| int errors = 0; | int errors = 0; |
| lt_dlhandle cur = handle; | |
| if (handle->depcount) | if (cur->depcount) |
| { | { |
| for (i = 0; i < handle->depcount; ++i) | for (i = 0; i < cur->depcount; ++i) |
| { | { |
| if (!LT_DLIS_RESIDENT (handle->deplibs[i])) | if (!LT_DLIS_RESIDENT (cur->deplibs[i])) |
| { | { |
| errors += lt_dlclose (handle->deplibs[i]); | errors += lt_dlclose (cur->deplibs[i]); |
| } | } |
| } | } |
| FREE (cur->deplibs); | |
| } | } |
| return errors; | return errors; |
| } | } |
| static int | static int |
| trim (dest, str) | trim (char **dest, const char *str) |
| char **dest; | |
| const char *str; | |
| { | { |
| /* remove the leading and trailing "'" from str | /* remove the leading and trailing "'" from str |
| and store the result in dest */ | and store the result in dest */ |
| Line 2499 trim (dest, str) | Line 1002 trim (dest, str) |
| size_t len = LT_STRLEN (str); | size_t len = LT_STRLEN (str); |
| char *tmp; | char *tmp; |
| LT_DLFREE (*dest); | FREE (*dest); |
| if (!end || end == str) | |
| return 1; | |
| if (len > 3 && str[0] == '\'') | if (len > 3 && str[0] == '\'') |
| { | { |
| tmp = LT_EMALLOC (char, end - str); | tmp = MALLOC (char, end - str); |
| if (!tmp) | if (!tmp) |
| return 1; | return 1; |
| strncpy(tmp, &str[1], (end - str) - 1); | memcpy(tmp, &str[1], (end - str) - 1); |
| tmp[len-3] = LT_EOS_CHAR; | tmp[(end - str) - 1] = LT_EOS_CHAR; |
| *dest = tmp; | *dest = tmp; |
| } | } |
| else | else |
| { | { |
| *dest = NULL; | *dest = 0; |
| } | } |
| return 0; | return 0; |
| } | } |
| /* Read the .la file FILE. */ | |
| static int | static int |
| free_vars (dlname, oldname, libdir, deplibs) | parse_dotla_file(FILE *file, char **dlname, char **libdir, char **deplibs, |
| char *dlname; | char **old_name, int *installed) |
| char *oldname; | { |
| char *libdir; | int errors = 0; |
| char *deplibs; | size_t line_len = LT_FILENAME_MAX; |
| { | char * line = MALLOC (char, line_len); |
| LT_DLFREE (dlname); | |
| LT_DLFREE (oldname); | |
| LT_DLFREE (libdir); | |
| LT_DLFREE (deplibs); | |
| return 0; | if (!line) |
| { | |
| LT__SETERROR (FILE_NOT_FOUND); | |
| return 1; | |
| } | |
| while (!feof (file)) | |
| { | |
| line[line_len-2] = '\0'; | |
| if (!fgets (line, (int) line_len, file)) | |
| { | |
| break; | |
| } | |
| /* Handle the case where we occasionally need to read a line | |
| that is longer than the initial buffer size. | |
| Behave even if the file contains NUL bytes due to corruption. */ | |
| while (line[line_len-2] != '\0' && line[line_len-2] != '\n' && !feof (file)) | |
| { | |
| line = REALLOC (char, line, line_len *2); | |
| if (!line) | |
| { | |
| ++errors; | |
| goto cleanup; | |
| } | |
| line[line_len * 2 - 2] = '\0'; | |
| if (!fgets (&line[line_len -1], (int) line_len +1, file)) | |
| { | |
| break; | |
| } | |
| line_len *= 2; | |
| } | |
| if (line[0] == '\n' || line[0] == '#') | |
| { | |
| continue; | |
| } | |
| #undef STR_DLNAME | |
| #define STR_DLNAME "dlname=" | |
| if (strncmp (line, STR_DLNAME, sizeof (STR_DLNAME) - 1) == 0) | |
| { | |
| errors += trim (dlname, &line[sizeof (STR_DLNAME) - 1]); | |
| } | |
| #undef STR_OLD_LIBRARY | |
| #define STR_OLD_LIBRARY "old_library=" | |
| else if (strncmp (line, STR_OLD_LIBRARY, | |
| sizeof (STR_OLD_LIBRARY) - 1) == 0) | |
| { | |
| errors += trim (old_name, &line[sizeof (STR_OLD_LIBRARY) - 1]); | |
| } | |
| /* Windows native tools do not understand the POSIX paths we store | |
| in libdir. */ | |
| #undef STR_LIBDIR | |
| #define STR_LIBDIR "libdir=" | |
| else if (strncmp (line, STR_LIBDIR, sizeof (STR_LIBDIR) - 1) == 0) | |
| { | |
| errors += trim (libdir, &line[sizeof(STR_LIBDIR) - 1]); | |
| #ifdef __WINDOWS__ | |
| /* Disallow following unix-style paths on MinGW. */ | |
| if (*libdir && (**libdir == '/' || **libdir == '\\')) | |
| **libdir = '\0'; | |
| #endif | |
| } | |
| #undef STR_DL_DEPLIBS | |
| #define STR_DL_DEPLIBS "dependency_libs=" | |
| else if (strncmp (line, STR_DL_DEPLIBS, | |
| sizeof (STR_DL_DEPLIBS) - 1) == 0) | |
| { | |
| errors += trim (deplibs, &line[sizeof (STR_DL_DEPLIBS) - 1]); | |
| } | |
| else if (streq (line, "installed=yes\n")) | |
| { | |
| *installed = 1; | |
| } | |
| else if (streq (line, "installed=no\n")) | |
| { | |
| *installed = 0; | |
| } | |
| #undef STR_LIBRARY_NAMES | |
| #define STR_LIBRARY_NAMES "library_names=" | |
| else if (!*dlname && strncmp (line, STR_LIBRARY_NAMES, | |
| sizeof (STR_LIBRARY_NAMES) - 1) == 0) | |
| { | |
| char *last_libname; | |
| errors += trim (dlname, &line[sizeof (STR_LIBRARY_NAMES) - 1]); | |
| if (!errors | |
| && *dlname | |
| && (last_libname = strrchr (*dlname, ' ')) != 0) | |
| { | |
| last_libname = lt__strdup (last_libname + 1); | |
| if (!last_libname) | |
| { | |
| ++errors; | |
| goto cleanup; | |
| } | |
| MEMREASSIGN (*dlname, last_libname); | |
| } | |
| } | |
| if (errors) | |
| break; | |
| } | |
| cleanup: | |
| FREE (line); | |
| return errors; | |
| } | } |
| /* Try to open FILENAME as a module. */ | |
| static int | static int |
| try_dlopen (phandle, filename) | try_dlopen (lt_dlhandle *phandle, const char *filename, const char *ext, |
| lt_dlhandle *phandle; | lt_dladvise advise) |
| const char *filename; | { |
| { | const char * saved_error = 0; |
| const char * ext = NULL; | char * archive_name = 0; |
| const char * saved_error = NULL; | char * canonical = 0; |
| char * canonical = NULL; | char * base_name = 0; |
| char * base_name = NULL; | char * dir = 0; |
| char * dir = NULL; | char * name = 0; |
| char * name = NULL; | char * attempt = 0; |
| int errors = 0; | int errors = 0; |
| lt_dlhandle newhandle; | lt_dlhandle newhandle; |
| assert (phandle); | assert (phandle); |
| assert (*phandle == NULL); | assert (*phandle == 0); |
| LT_DLMUTEX_GETERROR (saved_error); | #ifdef LT_DEBUG_LOADERS |
| fprintf (stderr, "try_dlopen (%s, %s)\n", | |
| filename ? filename : "(null)", | |
| ext ? ext : "(null)"); | |
| #endif | |
| LT__GETERROR (saved_error); | |
| /* dlopen self? */ | /* dlopen self? */ |
| if (!filename) | if (!filename) |
| { | { |
| *phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1); | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); |
| if (*phandle == NULL) | if (*phandle == 0) |
| return 1; | return 1; |
| memset (*phandle, 0, sizeof(struct lt_dlhandle_struct)); | |
| newhandle = *phandle; | newhandle = *phandle; |
| /* lt_dlclose()ing yourself is very bad! Disallow it. */ | /* lt_dlclose()ing yourself is very bad! Disallow it. */ |
| LT_DLSET_FLAG (*phandle, LT_DLRESIDENT_FLAG); | newhandle->info.is_resident = 1; |
| if (tryall_dlopen (&newhandle, 0) != 0) | if (tryall_dlopen (&newhandle, 0, advise, 0) != 0) |
| { | { |
| LT_DLFREE (*phandle); | FREE (*phandle); |
| return 1; | return 1; |
| } | } |
| Line 2577 try_dlopen (phandle, filename) | Line 1196 try_dlopen (phandle, filename) |
| assert (filename && *filename); | assert (filename && *filename); |
| if (ext) | |
| { | |
| attempt = MALLOC (char, LT_STRLEN (filename) + LT_STRLEN (ext) + 1); | |
| if (!attempt) | |
| return 1; | |
| sprintf(attempt, "%s%s", filename, ext); | |
| } | |
| else | |
| { | |
| attempt = lt__strdup (filename); | |
| if (!attempt) | |
| return 1; | |
| } | |
| /* Doing this immediately allows internal functions to safely | /* Doing this immediately allows internal functions to safely |
| assume only canonicalized paths are passed. */ | assume only canonicalized paths are passed. */ |
| if (canonicalize_path (filename, &canonical) != 0) | if (canonicalize_path (attempt, &canonical) != 0) |
| { | { |
| ++errors; | ++errors; |
| goto cleanup; | goto cleanup; |
| Line 2592 try_dlopen (phandle, filename) | Line 1226 try_dlopen (phandle, filename) |
| { | { |
| size_t dirlen = (1+ base_name) - canonical; | size_t dirlen = (1+ base_name) - canonical; |
| dir = LT_EMALLOC (char, 1+ dirlen); | dir = MALLOC (char, 1+ dirlen); |
| if (!dir) | if (!dir) |
| { | { |
| ++errors; | ++errors; |
| Line 2605 try_dlopen (phandle, filename) | Line 1239 try_dlopen (phandle, filename) |
| ++base_name; | ++base_name; |
| } | } |
| else | else |
| LT_DLMEM_REASSIGN (base_name, canonical); | MEMREASSIGN (base_name, canonical); |
| assert (base_name && *base_name); | assert (base_name && *base_name); |
| /* Check whether we are opening a libtool module (.la extension). */ | |
| ext = strrchr (base_name, '.'); | ext = strrchr (base_name, '.'); |
| if (ext && strcmp (ext, archive_ext) == 0) | if (!ext) |
| { | { |
| /* this seems to be a libtool module */ | ext = base_name + LT_STRLEN (base_name); |
| FILE * file = NULL; | } |
| char * dlname = NULL; | |
| char * old_name = NULL; | |
| char * libdir = NULL; | |
| char * deplibs = NULL; | |
| char * line = NULL; | |
| size_t line_len; | |
| /* if we can't find the installed flag, it is probably an | |
| installed libtool archive, produced with an old version | |
| of libtool */ | |
| int installed = 1; | |
| /* extract the module name from the file name */ | /* extract the module name from the file name */ |
| name = LT_EMALLOC (char, ext - base_name + 1); | name = MALLOC (char, ext - base_name + 1); |
| if (!name) | if (!name) |
| { | { |
| ++errors; | ++errors; |
| goto cleanup; | goto cleanup; |
| } | } |
| /* canonicalize the module name */ | /* canonicalize the module name */ |
| { | |
| int i; | |
| for (i = 0; i < ext - base_name; ++i) | |
| { | { |
| size_t i; | if (isalnum ((unsigned char)(base_name[i]))) |
| for (i = 0; i < ext - base_name; ++i) | |
| { | { |
| if (isalnum ((int)(base_name[i]))) | name[i] = base_name[i]; |
| { | } |
| name[i] = base_name[i]; | else |
| } | { |
| else | name[i] = '_'; |
| { | |
| name[i] = '_'; | |
| } | |
| } | } |
| name[ext - base_name] = LT_EOS_CHAR; | |
| } | } |
| name[ext - base_name] = LT_EOS_CHAR; | |
| } | |
| /* Before trawling through the filesystem in search of a module, | |
| check whether we are opening a preloaded module. */ | |
| if (!dir) | |
| { | |
| const lt_dlvtable *vtable = lt_dlloader_find ("lt_preopen"); | |
| if (vtable) | |
| { | |
| /* libprefix + name + "." + libext + NULL */ | |
| archive_name = MALLOC (char, strlen (libprefix) + LT_STRLEN (name) + strlen (libext) + 2); | |
| *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); | |
| if ((*phandle == NULL) || (archive_name == NULL)) | |
| { | |
| ++errors; | |
| goto cleanup; | |
| } | |
| newhandle = *phandle; | |
| /* Preloaded modules are always named according to their old | |
| archive name. */ | |
| if (strncmp(name, "lib", 3) == 0) | |
| { | |
| sprintf (archive_name, "%s%s.%s", libprefix, name + 3, libext); | |
| } | |
| else | |
| { | |
| sprintf (archive_name, "%s.%s", name, libext); | |
| } | |
| if (tryall_dlopen (&newhandle, archive_name, advise, vtable) == 0) | |
| { | |
| goto register_handle; | |
| } | |
| /* If we're still here, there was no matching preloaded module, | |
| so put things back as we found them, and continue searching. */ | |
| FREE (*phandle); | |
| newhandle = NULL; | |
| } | |
| } | |
| /* If we are allowing only preloaded modules, and we didn't find | |
| anything yet, give up on the search here. */ | |
| if (advise && advise->try_preload_only) | |
| { | |
| goto cleanup; | |
| } | |
| /* Check whether we are opening a libtool module (.la extension). */ | |
| if (ext && streq (ext, archive_ext)) | |
| { | |
| /* this seems to be a libtool module */ | |
| FILE * file = 0; | |
| char * dlname = 0; | |
| char * old_name = 0; | |
| char * libdir = 0; | |
| char * deplibs = 0; | |
| /* if we can't find the installed flag, it is probably an | |
| installed libtool archive, produced with an old version | |
| of libtool */ | |
| int installed = 1; | |
| /* Now try to open the .la file. If there is no directory name | /* Now try to open the .la file. If there is no directory name |
| component, try to find it first in user_search_path and then other | component, try to find it first in user_search_path and then other |
| prescribed paths. Otherwise (or in any case if the module was not | prescribed paths. Otherwise (or in any case if the module was not |
| yet found) try opening just the module name as passed. */ | yet found) try opening just the module name as passed. */ |
| if (!dir) | if (!dir) |
| { | { |
| const char *search_path; | const char *search_path = user_search_path; |
| LT_DLMUTEX_LOCK (); | |
| search_path = user_search_path; | |
| if (search_path) | if (search_path) |
| file = find_file (user_search_path, base_name, &dir); | file = find_file (user_search_path, base_name, &dir); |
| LT_DLMUTEX_UNLOCK (); | |
| if (!file) | if (!file) |
| { | { |
| Line 2673 try_dlopen (phandle, filename) | Line 1356 try_dlopen (phandle, filename) |
| file = find_file (search_path, base_name, &dir); | file = find_file (search_path, base_name, &dir); |
| } | } |
| #ifdef LTDL_SHLIBPATH_VAR | #if defined(LT_MODULE_PATH_VAR) |
| if (!file) | if (!file) |
| { | { |
| search_path = getenv (LTDL_SHLIBPATH_VAR); | search_path = getenv (LT_MODULE_PATH_VAR); |
| if (search_path) | if (search_path) |
| file = find_file (search_path, base_name, &dir); | file = find_file (search_path, base_name, &dir); |
| } | } |
| #endif | #endif |
| #ifdef LTDL_SYSSEARCHPATH | #if defined(LT_DLSEARCH_PATH) |
| if (!file && sys_search_path) | if (!file && *sys_dlsearch_path) |
| { | { |
| file = find_file (sys_search_path, base_name, &dir); | file = find_file (sys_dlsearch_path, base_name, &dir); |
| } | } |
| #endif | #endif |
| } | } |
| if (!file) | else |
| { | { |
| file = fopen (filename, LT_READTEXT_MODE); | file = fopen (attempt, LT_READTEXT_MODE); |
| } | } |
| /* If we didn't find the file by now, it really isn't there. Set | /* If we didn't find the file by now, it really isn't there. Set |
| the status flag, and bail out. */ | the status flag, and bail out. */ |
| if (!file) | if (!file) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); | LT__SETERROR (FILE_NOT_FOUND); |
| ++errors; | |
| goto cleanup; | |
| } | |
| line_len = LT_FILENAME_MAX; | |
| line = LT_EMALLOC (char, line_len); | |
| if (!line) | |
| { | |
| fclose (file); | |
| ++errors; | ++errors; |
| goto cleanup; | goto cleanup; |
| } | } |
| /* read the .la file */ | /* read the .la file */ |
| while (!feof (file)) | if (parse_dotla_file(file, &dlname, &libdir, &deplibs, |
| { | &old_name, &installed) != 0) |
| if (!fgets (line, (int) line_len, file)) | ++errors; |
| { | |
| break; | |
| } | |
| /* Handle the case where we occasionally need to read a line | |
| that is longer than the initial buffer size. */ | |
| while (line[LT_STRLEN(line) -1] != '\n') | |
| { | |
| line = LT_DLREALLOC (char, line, line_len *2); | |
| if (!fgets (&line[line_len -1], (int) line_len +1, file)) | |
| { | |
| break; | |
| } | |
| line_len *= 2; | |
| } | |
| if (line[0] == '\n' || line[0] == '#') | |
| { | |
| continue; | |
| } | |
| #undef STR_DLNAME | |
| #define STR_DLNAME "dlname=" | |
| if (strncmp (line, STR_DLNAME, sizeof (STR_DLNAME) - 1) == 0) | |
| { | |
| errors += trim (&dlname, &line[sizeof (STR_DLNAME) - 1]); | |
| } | |
| #undef STR_OLD_LIBRARY | |
| #define STR_OLD_LIBRARY "old_library=" | |
| else if (strncmp (line, STR_OLD_LIBRARY, | |
| sizeof (STR_OLD_LIBRARY) - 1) == 0) | |
| { | |
| errors += trim (&old_name, &line[sizeof (STR_OLD_LIBRARY) - 1]); | |
| } | |
| #undef STR_LIBDIR | |
| #define STR_LIBDIR "libdir=" | |
| else if (strncmp (line, STR_LIBDIR, sizeof (STR_LIBDIR) - 1) == 0) | |
| { | |
| errors += trim (&libdir, &line[sizeof(STR_LIBDIR) - 1]); | |
| } | |
| #undef STR_DL_DEPLIBS | |
| #define STR_DL_DEPLIBS "dependency_libs=" | |
| else if (strncmp (line, STR_DL_DEPLIBS, | |
| sizeof (STR_DL_DEPLIBS) - 1) == 0) | |
| { | |
| errors += trim (&deplibs, &line[sizeof (STR_DL_DEPLIBS) - 1]); | |
| } | |
| else if (strcmp (line, "installed=yes\n") == 0) | |
| { | |
| installed = 1; | |
| } | |
| else if (strcmp (line, "installed=no\n") == 0) | |
| { | |
| installed = 0; | |
| } | |
| #undef STR_LIBRARY_NAMES | |
| #define STR_LIBRARY_NAMES "library_names=" | |
| else if (! dlname && strncmp (line, STR_LIBRARY_NAMES, | |
| sizeof (STR_LIBRARY_NAMES) - 1) == 0) | |
| { | |
| char *last_libname; | |
| errors += trim (&dlname, &line[sizeof (STR_LIBRARY_NAMES) - 1]); | |
| if (!errors | |
| && dlname | |
| && (last_libname = strrchr (dlname, ' ')) != NULL) | |
| { | |
| last_libname = lt_estrdup (last_libname + 1); | |
| if (!last_libname) | |
| { | |
| ++errors; | |
| goto cleanup; | |
| } | |
| LT_DLMEM_REASSIGN (dlname, last_libname); | |
| } | |
| } | |
| if (errors) | |
| break; | |
| } | |
| fclose (file); | fclose (file); |
| LT_DLFREE (line); | |
| /* allocate the handle */ | /* allocate the handle */ |
| *phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1); | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); |
| if (*phandle == NULL) | if (*phandle == 0) |
| ++errors; | ++errors; |
| if (errors) | if (errors) |
| { | { |
| free_vars (dlname, old_name, libdir, deplibs); | FREE (dlname); |
| LT_DLFREE (*phandle); | FREE (old_name); |
| FREE (libdir); | |
| FREE (deplibs); | |
| FREE (*phandle); | |
| goto cleanup; | goto cleanup; |
| } | } |
| assert (*phandle); | assert (*phandle); |
| memset (*phandle, 0, sizeof(struct lt_dlhandle_struct)); | |
| if (load_deplibs (*phandle, deplibs) == 0) | if (load_deplibs (*phandle, deplibs) == 0) |
| { | { |
| newhandle = *phandle; | newhandle = *phandle; |
| /* find_module may replace newhandle */ | /* find_module may replace newhandle */ |
| if (find_module (&newhandle, dir, libdir, dlname, old_name, installed)) | if (find_module (&newhandle, dir, libdir, dlname, old_name, |
| installed, advise)) | |
| { | { |
| unload_deplibs (*phandle); | unload_deplibs (*phandle); |
| ++errors; | ++errors; |
| Line 2831 try_dlopen (phandle, filename) | Line 1425 try_dlopen (phandle, filename) |
| ++errors; | ++errors; |
| } | } |
| free_vars (dlname, old_name, libdir, deplibs); | FREE (dlname); |
| FREE (old_name); | |
| FREE (libdir); | |
| FREE (deplibs); | |
| if (errors) | if (errors) |
| { | { |
| LT_DLFREE (*phandle); | FREE (*phandle); |
| goto cleanup; | goto cleanup; |
| } | } |
| Line 2846 try_dlopen (phandle, filename) | Line 1444 try_dlopen (phandle, filename) |
| else | else |
| { | { |
| /* not a libtool module */ | /* not a libtool module */ |
| *phandle = (lt_dlhandle) LT_EMALLOC (struct lt_dlhandle_struct, 1); | *phandle = (lt_dlhandle) lt__zalloc (sizeof (struct lt__handle)); |
| if (*phandle == NULL) | if (*phandle == 0) |
| { | { |
| ++errors; | ++errors; |
| goto cleanup; | goto cleanup; |
| } | } |
| memset (*phandle, 0, sizeof (struct lt_dlhandle_struct)); | |
| newhandle = *phandle; | newhandle = *phandle; |
| /* If the module has no directory name component, try to find it | /* If the module has no directory name component, try to find it |
| first in user_search_path and then other prescribed paths. | first in user_search_path and then other prescribed paths. |
| Otherwise (or in any case if the module was not yet found) try | Otherwise (or in any case if the module was not yet found) try |
| opening just the module name as passed. */ | opening just the module name as passed. */ |
| if ((dir || (!find_handle (user_search_path, base_name, &newhandle) | if ((dir || (!find_handle (user_search_path, base_name, |
| &newhandle, advise) | |
| && !find_handle (getenv (LTDL_SEARCHPATH_VAR), base_name, | && !find_handle (getenv (LTDL_SEARCHPATH_VAR), base_name, |
| &newhandle) | &newhandle, advise) |
| #ifdef LTDL_SHLIBPATH_VAR | #if defined(LT_MODULE_PATH_VAR) |
| && !find_handle (getenv (LTDL_SHLIBPATH_VAR), base_name, | && !find_handle (getenv (LT_MODULE_PATH_VAR), base_name, |
| &newhandle) | &newhandle, advise) |
| #endif | #endif |
| #ifdef LTDL_SYSSEARCHPATH | #if defined(LT_DLSEARCH_PATH) |
| && !find_handle (sys_search_path, base_name, &newhandle) | && !find_handle (sys_dlsearch_path, base_name, |
| &newhandle, advise) | |
| #endif | #endif |
| ))) | ))) |
| { | { |
| if (tryall_dlopen (&newhandle, filename) != 0) | if (tryall_dlopen (&newhandle, attempt, advise, 0) != 0) |
| { | { |
| newhandle = NULL; | newhandle = NULL; |
| } | } |
| } | } |
| if (!newhandle) | if (!newhandle) |
| { | { |
| LT_DLFREE (*phandle); | FREE (*phandle); |
| ++errors; | ++errors; |
| goto cleanup; | goto cleanup; |
| } | } |
| } | } |
| register_handle: | register_handle: |
| LT_DLMEM_REASSIGN (*phandle, newhandle); | MEMREASSIGN (*phandle, newhandle); |
| if ((*phandle)->info.ref_count == 0) | if ((*phandle)->info.ref_count == 0) |
| { | { |
| (*phandle)->info.ref_count = 1; | (*phandle)->info.ref_count = 1; |
| LT_DLMEM_REASSIGN ((*phandle)->info.name, name); | MEMREASSIGN ((*phandle)->info.name, name); |
| LT_DLMUTEX_LOCK (); | (*phandle)->next = handles; |
| (*phandle)->next = handles; | handles = *phandle; |
| handles = *phandle; | |
| LT_DLMUTEX_UNLOCK (); | |
| } | } |
| LT_DLMUTEX_SETERROR (saved_error); | LT__SETERRORSTR (saved_error); |
| cleanup: | cleanup: |
| LT_DLFREE (dir); | FREE (dir); |
| LT_DLFREE (name); | FREE (attempt); |
| LT_DLFREE (canonical); | FREE (name); |
| if (!canonical) /* was MEMREASSIGNed */ | |
| FREE (base_name); | |
| FREE (canonical); | |
| FREE (archive_name); | |
| return errors; | return errors; |
| } | } |
| lt_dlhandle | |
| lt_dlopen (filename) | /* If the last error message stored was `FILE_NOT_FOUND', then return |
| const char *filename; | non-zero. */ |
| static int | |
| file_not_found (void) | |
| { | { |
| lt_dlhandle handle = NULL; | const char *error = 0; |
| /* Just incase we missed a code path in try_dlopen() that reports | LT__GETERROR (error); |
| an error, but forgets to reset handle... */ | if (error == LT__STRERROR (FILE_NOT_FOUND)) |
| if (try_dlopen (&handle, filename) != 0) | return 1; |
| return 0; | |
| return handle; | return 0; |
| } | } |
| /* If the last error messge store was `FILE_NOT_FOUND', then return | |
| non-zero. */ | /* Unless FILENAME already bears a suitable library extension, then |
| return 0. */ | |
| static int | static int |
| file_not_found () | has_library_ext (const char *filename) |
| { | { |
| const char *error = NULL; | const char * ext = 0; |
| LT_DLMUTEX_GETERROR (error); | assert (filename); |
| if (error == LT_DLSTRERROR (FILE_NOT_FOUND)) | |
| return 1; | |
| ext = strrchr (filename, '.'); | |
| if (ext && ((streq (ext, archive_ext)) | |
| #if defined(LT_MODULE_EXT) | |
| || (streq (ext, shlib_ext)) | |
| #endif | |
| #if defined(LT_SHARED_EXT) | |
| || (streq (ext, shared_ext)) | |
| #endif | |
| )) | |
| { | |
| return 1; | |
| } | |
| return 0; | |
| } | |
| /* Initialise and configure a user lt_dladvise opaque object. */ | |
| int | |
| lt_dladvise_init (lt_dladvise *padvise) | |
| { | |
| lt_dladvise advise = (lt_dladvise) lt__zalloc (sizeof (struct lt__advise)); | |
| *padvise = advise; | |
| return (advise ? 0 : 1); | |
| } | |
| int | |
| lt_dladvise_destroy (lt_dladvise *padvise) | |
| { | |
| if (padvise) | |
| FREE(*padvise); | |
| return 0; | return 0; |
| } | } |
| /* If FILENAME has an ARCHIVE_EXT or SHLIB_EXT extension, try to | int |
| lt_dladvise_ext (lt_dladvise *padvise) | |
| { | |
| assert (padvise && *padvise); | |
| (*padvise)->try_ext = 1; | |
| return 0; | |
| } | |
| int | |
| lt_dladvise_resident (lt_dladvise *padvise) | |
| { | |
| assert (padvise && *padvise); | |
| (*padvise)->is_resident = 1; | |
| return 0; | |
| } | |
| int | |
| lt_dladvise_local (lt_dladvise *padvise) | |
| { | |
| assert (padvise && *padvise); | |
| (*padvise)->is_symlocal = 1; | |
| return 0; | |
| } | |
| int | |
| lt_dladvise_global (lt_dladvise *padvise) | |
| { | |
| assert (padvise && *padvise); | |
| (*padvise)->is_symglobal = 1; | |
| return 0; | |
| } | |
| int | |
| lt_dladvise_preload (lt_dladvise *padvise) | |
| { | |
| assert (padvise && *padvise); | |
| (*padvise)->try_preload_only = 1; | |
| return 0; | |
| } | |
| /* Libtool-1.5.x interface for loading a new module named FILENAME. */ | |
| lt_dlhandle | |
| lt_dlopen (const char *filename) | |
| { | |
| return lt_dlopenadvise (filename, NULL); | |
| } | |
| /* If FILENAME has an ARCHIVE_EXT or MODULE_EXT extension, try to | |
| open the FILENAME as passed. Otherwise try appending ARCHIVE_EXT, | open the FILENAME as passed. Otherwise try appending ARCHIVE_EXT, |
| and if a file is still not found try again with SHLIB_EXT appended | and if a file is still not found try again with MODULE_EXT appended |
| instead. */ | instead. */ |
| lt_dlhandle | lt_dlhandle |
| lt_dlopenext (filename) | lt_dlopenext (const char *filename) |
| const char *filename; | |
| { | { |
| lt_dlhandle handle = NULL; | lt_dlhandle handle = 0; |
| char * tmp = NULL; | lt_dladvise advise; |
| char * ext = NULL; | |
| size_t len; | |
| int errors = 0; | |
| if (!filename) | if (!lt_dladvise_init (&advise) && !lt_dladvise_ext (&advise)) |
| { | handle = lt_dlopenadvise (filename, advise); |
| return lt_dlopen (filename); | |
| } | |
| assert (filename); | lt_dladvise_destroy (&advise); |
| return handle; | |
| } | |
| len = LT_STRLEN (filename); | |
| ext = strrchr (filename, '.'); | |
| /* If FILENAME already bears a suitable extension, there is no need | lt_dlhandle |
| to try appending additional extensions. */ | lt_dlopenadvise (const char *filename, lt_dladvise advise) |
| if (ext && ((strcmp (ext, archive_ext) == 0) | { |
| #ifdef LTDL_SHLIB_EXT | lt_dlhandle handle = 0; |
| || (strcmp (ext, shlib_ext) == 0) | int errors = 0; |
| #endif | const char * saved_error = 0; |
| )) | |
| { | |
| return lt_dlopen (filename); | |
| } | |
| /* First try appending ARCHIVE_EXT. */ | LT__GETERROR (saved_error); |
| tmp = LT_EMALLOC (char, len + LT_STRLEN (archive_ext) + 1); | |
| if (!tmp) | |
| return 0; | |
| strcpy (tmp, filename); | /* Can't have symbols hidden and visible at the same time! */ |
| strcat (tmp, archive_ext); | if (advise && advise->is_symlocal && advise->is_symglobal) |
| errors = try_dlopen (&handle, tmp); | |
| /* If we found FILENAME, stop searching -- whether we were able to | |
| load the file as a module or not. If the file exists but loading | |
| failed, it is better to return an error message here than to | |
| report FILE_NOT_FOUND when the alternatives (foo.so etc) are not | |
| in the module search path. */ | |
| if (handle || ((errors > 0) && file_not_found ())) | |
| { | { |
| LT_DLFREE (tmp); | LT__SETERROR (CONFLICTING_FLAGS); |
| return handle; | return 0; |
| } | } |
| #ifdef LTDL_SHLIB_EXT | if (!filename |
| /* Try appending SHLIB_EXT. */ | || !advise |
| if (LT_STRLEN (shlib_ext) > LT_STRLEN (archive_ext)) | || !advise->try_ext |
| { | || has_library_ext (filename)) |
| LT_DLFREE (tmp); | { |
| tmp = LT_EMALLOC (char, len + LT_STRLEN (shlib_ext) + 1); | /* Just incase we missed a code path in try_dlopen() that reports |
| if (!tmp) | an error, but forgot to reset handle... */ |
| if (try_dlopen (&handle, filename, NULL, advise) != 0) | |
| return 0; | return 0; |
| strcpy (tmp, filename); | return handle; |
| } | } |
| else | else if (filename && *filename) |
| { | { |
| tmp[len] = LT_EOS_CHAR; | |
| } | |
| strcat(tmp, shlib_ext); | /* First try appending ARCHIVE_EXT. */ |
| errors = try_dlopen (&handle, tmp); | errors += try_dlopen (&handle, filename, archive_ext, advise); |
| /* As before, if the file was found but loading failed, return now | /* If we found FILENAME, stop searching -- whether we were able to |
| with the current error message. */ | load the file as a module or not. If the file exists but loading |
| if (handle || ((errors > 0) && file_not_found ())) | failed, it is better to return an error message here than to |
| { | report FILE_NOT_FOUND when the alternatives (foo.so etc) are not |
| LT_DLFREE (tmp); | in the module search path. */ |
| return handle; | if (handle || ((errors > 0) && !file_not_found ())) |
| } | return handle; |
| #if defined(LT_MODULE_EXT) | |
| /* Try appending SHLIB_EXT. */ | |
| LT__SETERRORSTR (saved_error); | |
| errors = try_dlopen (&handle, filename, shlib_ext, advise); | |
| /* As before, if the file was found but loading failed, return now | |
| with the current error message. */ | |
| if (handle || ((errors > 0) && !file_not_found ())) | |
| return handle; | |
| #endif | |
| #if defined(LT_SHARED_EXT) | |
| /* Try appending SHARED_EXT. */ | |
| LT__SETERRORSTR (saved_error); | |
| errors = try_dlopen (&handle, filename, shared_ext, advise); | |
| /* As before, if the file was found but loading failed, return now | |
| with the current error message. */ | |
| if (handle || ((errors > 0) && !file_not_found ())) | |
| return handle; | |
| #endif | #endif |
| } | |
| /* Still here? Then we really did fail to locate any of the file | /* Still here? Then we really did fail to locate any of the file |
| names we tried. */ | names we tried. */ |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (FILE_NOT_FOUND)); | LT__SETERROR (FILE_NOT_FOUND); |
| LT_DLFREE (tmp); | |
| return 0; | return 0; |
| } | } |
| static int | static int |
| lt_argz_insert (pargz, pargz_len, before, entry) | lt_argz_insert (char **pargz, size_t *pargz_len, char *before, |
| char **pargz; | const char *entry) |
| size_t *pargz_len; | |
| char *before; | |
| const char *entry; | |
| { | { |
| error_t error; | error_t error; |
| if ((error = argz_insert (pargz, pargz_len, before, entry))) | /* Prior to Sep 8, 2005, newlib had a bug where argz_insert(pargz, |
| pargz_len, NULL, entry) failed with EINVAL. */ | |
| if (before) | |
| error = argz_insert (pargz, pargz_len, before, entry); | |
| else | |
| error = argz_append (pargz, pargz_len, entry, 1 + strlen (entry)); | |
| if (error) | |
| { | { |
| switch (error) | switch (error) |
| { | { |
| case ENOMEM: | case ENOMEM: |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (NO_MEMORY)); | LT__SETERROR (NO_MEMORY); |
| break; | break; |
| default: | default: |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (UNKNOWN)); | LT__SETERROR (UNKNOWN); |
| break; | break; |
| } | } |
| return 1; | return 1; |
| Line 3056 lt_argz_insert (pargz, pargz_len, before | Line 1741 lt_argz_insert (pargz, pargz_len, before |
| } | } |
| static int | static int |
| lt_argz_insertinorder (pargz, pargz_len, entry) | lt_argz_insertinorder (char **pargz, size_t *pargz_len, const char *entry) |
| char **pargz; | |
| size_t *pargz_len; | |
| const char *entry; | |
| { | { |
| char *before = NULL; | char *before = 0; |
| assert (pargz); | assert (pargz); |
| assert (pargz_len); | assert (pargz_len); |
| Line 3080 lt_argz_insertinorder (pargz, pargz_len, | Line 1762 lt_argz_insertinorder (pargz, pargz_len, |
| } | } |
| static int | static int |
| lt_argz_insertdir (pargz, pargz_len, dirnam, dp) | lt_argz_insertdir (char **pargz, size_t *pargz_len, const char *dirnam, |
| char **pargz; | struct dirent *dp) |
| size_t *pargz_len; | |
| const char *dirnam; | |
| struct dirent *dp; | |
| { | { |
| char *buf = NULL; | char *buf = 0; |
| size_t buf_len = 0; | size_t buf_len = 0; |
| char *end = NULL; | char *end = 0; |
| size_t end_offset = 0; | size_t end_offset = 0; |
| size_t dir_len = 0; | size_t dir_len = 0; |
| int errors = 0; | int errors = 0; |
| Line 3098 lt_argz_insertdir (pargz, pargz_len, dir | Line 1777 lt_argz_insertdir (pargz, pargz_len, dir |
| assert (dp); | assert (dp); |
| dir_len = LT_STRLEN (dirnam); | dir_len = LT_STRLEN (dirnam); |
| end = dp->d_name + LT_D_NAMLEN(dp); | end = dp->d_name + D_NAMLEN(dp); |
| /* Ignore version numbers. */ | /* Ignore version numbers. */ |
| { | { |
| Line 3125 lt_argz_insertdir (pargz, pargz_len, dir | Line 1804 lt_argz_insertdir (pargz, pargz_len, dir |
| /* Prepend the directory name. */ | /* Prepend the directory name. */ |
| end_offset = end - dp->d_name; | end_offset = end - dp->d_name; |
| buf_len = dir_len + 1+ end_offset; | buf_len = dir_len + 1+ end_offset; |
| buf = LT_EMALLOC (char, 1+ buf_len); | buf = MALLOC (char, 1+ buf_len); |
| if (!buf) | if (!buf) |
| return ++errors; | return ++errors; |
| Line 3140 lt_argz_insertdir (pargz, pargz_len, dir | Line 1819 lt_argz_insertdir (pargz, pargz_len, dir |
| if (lt_argz_insertinorder (pargz, pargz_len, buf) != 0) | if (lt_argz_insertinorder (pargz, pargz_len, buf) != 0) |
| ++errors; | ++errors; |
| LT_DLFREE (buf); | FREE (buf); |
| return errors; | return errors; |
| } | } |
| static int | static int |
| list_files_by_dir (dirnam, pargz, pargz_len) | list_files_by_dir (const char *dirnam, char **pargz, size_t *pargz_len) |
| const char *dirnam; | |
| char **pargz; | |
| size_t *pargz_len; | |
| { | { |
| DIR *dirp = NULL; | DIR *dirp = 0; |
| int errors = 0; | int errors = 0; |
| assert (dirnam && *dirnam); | assert (dirnam && *dirnam); |
| Line 3162 list_files_by_dir (dirnam, pargz, pargz_ | Line 1838 list_files_by_dir (dirnam, pargz, pargz_ |
| dirp = opendir (dirnam); | dirp = opendir (dirnam); |
| if (dirp) | if (dirp) |
| { | { |
| struct dirent *dp = NULL; | struct dirent *dp = 0; |
| while ((dp = readdir (dirp))) | while ((dp = readdir (dirp))) |
| if (dp->d_name[0] != '.') | if (dp->d_name[0] != '.') |
| Line 3184 list_files_by_dir (dirnam, pargz, pargz_ | Line 1860 list_files_by_dir (dirnam, pargz, pargz_ |
| /* If there are any files in DIRNAME, call the function passed in | /* If there are any files in DIRNAME, call the function passed in |
| DATA1 (with the name of each file and DATA2 as arguments). */ | DATA1 (with the name of each file and DATA2 as arguments). */ |
| static int | static int |
| foreachfile_callback (dirname, data1, data2) | foreachfile_callback (char *dirname, void *data1, void *data2) |
| char *dirname; | |
| lt_ptr data1; | |
| lt_ptr data2; | |
| { | { |
| int (*func) LT_PARAMS((const char *filename, lt_ptr data)) | file_worker_func *func = *(file_worker_func **) data1; |
| = (int (*) LT_PARAMS((const char *filename, lt_ptr data))) data1; | |
| int is_done = 0; | int is_done = 0; |
| char *argz = NULL; | char *argz = 0; |
| size_t argz_len = 0; | size_t argz_len = 0; |
| if (list_files_by_dir (dirname, &argz, &argz_len) != 0) | if (list_files_by_dir (dirname, &argz, &argz_len) != 0) |
| Line 3202 foreachfile_callback (dirname, data1, da | Line 1874 foreachfile_callback (dirname, data1, da |
| goto cleanup; | goto cleanup; |
| { | { |
| char *filename = NULL; | char *filename = 0; |
| while ((filename = argz_next (argz, argz_len, filename))) | while ((filename = argz_next (argz, argz_len, filename))) |
| if ((is_done = (*func) (filename, data2))) | if ((is_done = (*func) (filename, data2))) |
| break; | break; |
| } | } |
| cleanup: | cleanup: |
| LT_DLFREE (argz); | FREE (argz); |
| return is_done; | return is_done; |
| } | } |
| Line 3222 foreachfile_callback (dirname, data1, da | Line 1894 foreachfile_callback (dirname, data1, da |
| libfoo.so, libfoo.so.1, libfoo.so.1.0.0). If SEARCH_PATH is NULL, | libfoo.so, libfoo.so.1, libfoo.so.1.0.0). If SEARCH_PATH is NULL, |
| then the same directories that lt_dlopen would search are examined. */ | then the same directories that lt_dlopen would search are examined. */ |
| int | int |
| lt_dlforeachfile (search_path, func, data) | lt_dlforeachfile (const char *search_path, |
| const char *search_path; | int (*func) (const char *filename, void *data), |
| int (*func) LT_PARAMS ((const char *filename, lt_ptr data)); | void *data) |
| lt_ptr data; | |
| { | { |
| int is_done = 0; | int is_done = 0; |
| file_worker_func **fpptr = &func; | |
| if (search_path) | if (search_path) |
| { | { |
| /* If a specific path was passed, search only the directories | /* If a specific path was passed, search only the directories |
| listed in it. */ | listed in it. */ |
| is_done = foreach_dirinpath (search_path, 0, | is_done = foreach_dirinpath (search_path, 0, |
| foreachfile_callback, func, data); | foreachfile_callback, fpptr, data); |
| } | } |
| else | else |
| { | { |
| /* Otherwise search the default paths. */ | /* Otherwise search the default paths. */ |
| is_done = foreach_dirinpath (user_search_path, 0, | is_done = foreach_dirinpath (user_search_path, 0, |
| foreachfile_callback, func, data); | foreachfile_callback, fpptr, data); |
| if (!is_done) | if (!is_done) |
| { | { |
| is_done = foreach_dirinpath (getenv("LTDL_LIBRARY_PATH"), 0, | is_done = foreach_dirinpath (getenv(LTDL_SEARCHPATH_VAR), 0, |
| foreachfile_callback, func, data); | foreachfile_callback, fpptr, data); |
| } | } |
| #ifdef LTDL_SHLIBPATH_VAR | #if defined(LT_MODULE_PATH_VAR) |
| if (!is_done) | if (!is_done) |
| { | { |
| is_done = foreach_dirinpath (getenv(LTDL_SHLIBPATH_VAR), 0, | is_done = foreach_dirinpath (getenv(LT_MODULE_PATH_VAR), 0, |
| foreachfile_callback, func, data); | foreachfile_callback, fpptr, data); |
| } | } |
| #endif | #endif |
| #ifdef LTDL_SYSSEARCHPATH | #if defined(LT_DLSEARCH_PATH) |
| if (!is_done) | if (!is_done && *sys_dlsearch_path) |
| { | { |
| is_done = foreach_dirinpath (getenv(LTDL_SYSSEARCHPATH), 0, | is_done = foreach_dirinpath (sys_dlsearch_path, 0, |
| foreachfile_callback, func, data); | foreachfile_callback, fpptr, data); |
| } | } |
| #endif | #endif |
| } | } |
| Line 3267 lt_dlforeachfile (search_path, func, dat | Line 1939 lt_dlforeachfile (search_path, func, dat |
| } | } |
| int | int |
| lt_dlclose (handle) | lt_dlclose (lt_dlhandle handle) |
| lt_dlhandle handle; | |
| { | { |
| lt_dlhandle cur, last; | lt_dlhandle cur, last; |
| int errors = 0; | int errors = 0; |
| LT_DLMUTEX_LOCK (); | |
| /* check whether the handle is valid */ | /* check whether the handle is valid */ |
| last = cur = handles; | last = cur = handles; |
| while (cur && handle != cur) | while (cur && handle != cur) |
| Line 3285 lt_dlclose (handle) | Line 1954 lt_dlclose (handle) |
| if (!cur) | if (!cur) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); | LT__SETERROR (INVALID_HANDLE); |
| ++errors; | ++errors; |
| goto done; | goto done; |
| } | } |
| handle->info.ref_count--; | cur = handle; |
| cur->info.ref_count--; | |
| /* Note that even with resident modules, we must track the ref_count | /* Note that even with resident modules, we must track the ref_count |
| correctly incase the user decides to reset the residency flag | correctly incase the user decides to reset the residency flag |
| later (even though the API makes no provision for that at the | later (even though the API makes no provision for that at the |
| moment). */ | moment). */ |
| if (handle->info.ref_count <= 0 && !LT_DLIS_RESIDENT (handle)) | if (cur->info.ref_count <= 0 && !LT_DLIS_RESIDENT (cur)) |
| { | { |
| lt_user_data data = handle->loader->dlloader_data; | lt_user_data data = cur->vtable->dlloader_data; |
| if (handle != handles) | if (cur != handles) |
| { | { |
| last->next = handle->next; | last->next = cur->next; |
| } | } |
| else | else |
| { | { |
| handles = handle->next; | handles = cur->next; |
| } | } |
| errors += handle->loader->module_close (data, handle->module); | errors += cur->vtable->module_close (data, cur->module); |
| errors += unload_deplibs(handle); | errors += unload_deplibs (handle); |
| /* It is up to the callers to free the data itself. */ | /* It is up to the callers to free the data itself. */ |
| LT_DLFREE (handle->caller_data); | FREE (cur->interface_data); |
| LT_DLFREE (handle->info.filename); | FREE (cur->info.filename); |
| LT_DLFREE (handle->info.name); | FREE (cur->info.name); |
| LT_DLFREE (handle); | FREE (cur); |
| goto done; | goto done; |
| } | } |
| if (LT_DLIS_RESIDENT (handle)) | if (LT_DLIS_RESIDENT (handle)) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (CLOSE_RESIDENT_MODULE)); | LT__SETERROR (CLOSE_RESIDENT_MODULE); |
| ++errors; | ++errors; |
| } | } |
| done: | done: |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | return errors; |
| } | } |
| lt_ptr | void * |
| lt_dlsym (handle, symbol) | lt_dlsym (lt_dlhandle place, const char *symbol) |
| lt_dlhandle handle; | |
| const char *symbol; | |
| { | { |
| size_t lensym; | size_t lensym; |
| char lsym[LT_SYMBOL_LENGTH]; | char lsym[LT_SYMBOL_LENGTH]; |
| char *sym; | char *sym; |
| lt_ptr address; | void *address; |
| lt_user_data data; | lt_user_data data; |
| lt_dlhandle handle; | |
| if (!handle) | if (!place) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); | LT__SETERROR (INVALID_HANDLE); |
| return 0; | return 0; |
| } | } |
| handle = place; | |
| if (!symbol) | if (!symbol) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (SYMBOL_NOT_FOUND)); | LT__SETERROR (SYMBOL_NOT_FOUND); |
| return 0; | return 0; |
| } | } |
| lensym = LT_STRLEN (symbol) + LT_STRLEN (handle->loader->sym_prefix) | lensym = LT_STRLEN (symbol) + LT_STRLEN (handle->vtable->sym_prefix) |
| + LT_STRLEN (handle->info.name); | + LT_STRLEN (handle->info.name); |
| if (lensym + LT_SYMBOL_OVERHEAD < LT_SYMBOL_LENGTH) | if (lensym + LT_SYMBOL_OVERHEAD < LT_SYMBOL_LENGTH) |
| Line 3366 lt_dlsym (handle, symbol) | Line 2035 lt_dlsym (handle, symbol) |
| } | } |
| else | else |
| { | { |
| sym = LT_EMALLOC (char, lensym + LT_SYMBOL_OVERHEAD + 1); | sym = MALLOC (char, lensym + LT_SYMBOL_OVERHEAD + 1); |
| if (!sym) | if (!sym) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (BUFFER_OVERFLOW)); | LT__SETERROR (BUFFER_OVERFLOW); |
| return 0; | return 0; |
| } | } |
| } | } |
| data = handle->loader->dlloader_data; | data = handle->vtable->dlloader_data; |
| if (handle->info.name) | if (handle->info.name) |
| { | { |
| const char *saved_error; | const char *saved_error; |
| LT_DLMUTEX_GETERROR (saved_error); | LT__GETERROR (saved_error); |
| /* this is a libtool module */ | /* this is a libtool module */ |
| if (handle->loader->sym_prefix) | if (handle->vtable->sym_prefix) |
| { | { |
| strcpy(sym, handle->loader->sym_prefix); | strcpy(sym, handle->vtable->sym_prefix); |
| strcat(sym, handle->info.name); | strcat(sym, handle->info.name); |
| } | } |
| else | else |
| Line 3396 lt_dlsym (handle, symbol) | Line 2065 lt_dlsym (handle, symbol) |
| strcat(sym, symbol); | strcat(sym, symbol); |
| /* try "modulename_LTX_symbol" */ | /* try "modulename_LTX_symbol" */ |
| address = handle->loader->find_sym (data, handle->module, sym); | address = handle->vtable->find_sym (data, handle->module, sym); |
| if (address) | if (address) |
| { | { |
| if (sym != lsym) | if (sym != lsym) |
| { | { |
| LT_DLFREE (sym); | FREE (sym); |
| } | } |
| return address; | return address; |
| } | } |
| LT_DLMUTEX_SETERROR (saved_error); | LT__SETERRORSTR (saved_error); |
| } | } |
| /* otherwise try "symbol" */ | /* otherwise try "symbol" */ |
| if (handle->loader->sym_prefix) | if (handle->vtable->sym_prefix) |
| { | { |
| strcpy(sym, handle->loader->sym_prefix); | strcpy(sym, handle->vtable->sym_prefix); |
| strcat(sym, symbol); | strcat(sym, symbol); |
| } | } |
| else | else |
| Line 3419 lt_dlsym (handle, symbol) | Line 2088 lt_dlsym (handle, symbol) |
| strcpy(sym, symbol); | strcpy(sym, symbol); |
| } | } |
| address = handle->loader->find_sym (data, handle->module, sym); | address = handle->vtable->find_sym (data, handle->module, sym); |
| if (sym != lsym) | if (sym != lsym) |
| { | { |
| LT_DLFREE (sym); | FREE (sym); |
| } | } |
| return address; | return address; |
| } | } |
| const char * | const char * |
| lt_dlerror () | lt_dlerror (void) |
| { | { |
| const char *error; | const char *error; |
| LT_DLMUTEX_GETERROR (error); | LT__GETERROR (error); |
| LT_DLMUTEX_SETERROR (0); | LT__SETERRORSTR (0); |
| return error ? error : LT_DLSTRERROR (UNKNOWN); | return error; |
| } | } |
| static int | static int |
| lt_dlpath_insertdir (ppath, before, dir) | lt_dlpath_insertdir (char **ppath, char *before, const char *dir) |
| char **ppath; | |
| char *before; | |
| const char *dir; | |
| { | { |
| int errors = 0; | int errors = 0; |
| char *canonical = NULL; | char *canonical = 0; |
| char *argz = NULL; | char *argz = 0; |
| size_t argz_len = 0; | size_t argz_len = 0; |
| assert (ppath); | assert (ppath); |
| Line 3462 lt_dlpath_insertdir (ppath, before, dir) | Line 2128 lt_dlpath_insertdir (ppath, before, dir) |
| assert (canonical && *canonical); | assert (canonical && *canonical); |
| /* If *PPATH is empty, set it to DIR. */ | /* If *PPATH is empty, set it to DIR. */ |
| if (*ppath == NULL) | if (*ppath == 0) |
| { | { |
| assert (!before); /* BEFORE cannot be set without PPATH. */ | assert (!before); /* BEFORE cannot be set without PPATH. */ |
| assert (dir); /* Without DIR, don't call this function! */ | assert (dir); /* Without DIR, don't call this function! */ |
| *ppath = lt_estrdup (dir); | *ppath = lt__strdup (dir); |
| if (*ppath == NULL) | if (*ppath == 0) |
| ++errors; | ++errors; |
| return errors; | goto cleanup; |
| } | } |
| assert (ppath && *ppath); | assert (ppath && *ppath); |
| Line 3490 lt_dlpath_insertdir (ppath, before, dir) | Line 2156 lt_dlpath_insertdir (ppath, before, dir) |
| if (before) | if (before) |
| { | { |
| assert (*ppath <= before); | assert (*ppath <= before); |
| assert (before - *ppath <= strlen (*ppath)); | assert ((int) (before - *ppath) <= (int) strlen (*ppath)); |
| before = before - *ppath + argz; | before = before - *ppath + argz; |
| } | } |
| Line 3502 lt_dlpath_insertdir (ppath, before, dir) | Line 2168 lt_dlpath_insertdir (ppath, before, dir) |
| } | } |
| argz_stringify (argz, argz_len, LT_PATHSEP_CHAR); | argz_stringify (argz, argz_len, LT_PATHSEP_CHAR); |
| LT_DLMEM_REASSIGN (*ppath, argz); | MEMREASSIGN(*ppath, argz); |
| cleanup: | cleanup: |
| LT_DLFREE (canonical); | FREE (argz); |
| LT_DLFREE (argz); | FREE (canonical); |
| return errors; | return errors; |
| } | } |
| int | int |
| lt_dladdsearchdir (search_dir) | lt_dladdsearchdir (const char *search_dir) |
| const char *search_dir; | |
| { | { |
| int errors = 0; | int errors = 0; |
| if (search_dir && *search_dir) | if (search_dir && *search_dir) |
| { | { |
| LT_DLMUTEX_LOCK (); | |
| if (lt_dlpath_insertdir (&user_search_path, 0, search_dir) != 0) | if (lt_dlpath_insertdir (&user_search_path, 0, search_dir) != 0) |
| ++errors; | ++errors; |
| LT_DLMUTEX_UNLOCK (); | |
| } | } |
| return errors; | return errors; |
| } | } |
| int | int |
| lt_dlinsertsearchdir (before, search_dir) | lt_dlinsertsearchdir (const char *before, const char *search_dir) |
| const char *before; | |
| const char *search_dir; | |
| { | { |
| int errors = 0; | int errors = 0; |
| if (before) | if (before) |
| { | { |
| LT_DLMUTEX_LOCK (); | |
| if ((before < user_search_path) | if ((before < user_search_path) |
| || (before >= user_search_path + LT_STRLEN (user_search_path))) | || (before >= user_search_path + LT_STRLEN (user_search_path))) |
| { | { |
| LT_DLMUTEX_UNLOCK (); | LT__SETERROR (INVALID_POSITION); |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_POSITION)); | |
| return 1; | return 1; |
| } | } |
| LT_DLMUTEX_UNLOCK (); | |
| } | } |
| if (search_dir && *search_dir) | if (search_dir && *search_dir) |
| { | { |
| LT_DLMUTEX_LOCK (); | |
| if (lt_dlpath_insertdir (&user_search_path, | if (lt_dlpath_insertdir (&user_search_path, |
| (char *) before, search_dir) != 0) | (char *) before, search_dir) != 0) |
| { | { |
| ++errors; | ++errors; |
| } | } |
| LT_DLMUTEX_UNLOCK (); | |
| } | } |
| return errors; | return errors; |
| } | } |
| int | int |
| lt_dlsetsearchpath (search_path) | lt_dlsetsearchpath (const char *search_path) |
| const char *search_path; | |
| { | { |
| int errors = 0; | int errors = 0; |
| LT_DLMUTEX_LOCK (); | FREE (user_search_path); |
| LT_DLFREE (user_search_path); | |
| LT_DLMUTEX_UNLOCK (); | |
| if (!search_path || !LT_STRLEN (search_path)) | if (!search_path || !LT_STRLEN (search_path)) |
| { | { |
| return errors; | return errors; |
| } | } |
| LT_DLMUTEX_LOCK (); | |
| if (canonicalize_path (search_path, &user_search_path) != 0) | if (canonicalize_path (search_path, &user_search_path) != 0) |
| ++errors; | ++errors; |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | return errors; |
| } | } |
| const char * | const char * |
| lt_dlgetsearchpath () | lt_dlgetsearchpath (void) |
| { | { |
| const char *saved_path; | const char *saved_path; |
| LT_DLMUTEX_LOCK (); | |
| saved_path = user_search_path; | saved_path = user_search_path; |
| LT_DLMUTEX_UNLOCK (); | |
| return saved_path; | return saved_path; |
| } | } |
| int | int |
| lt_dlmakeresident (handle) | lt_dlmakeresident (lt_dlhandle handle) |
| lt_dlhandle handle; | |
| { | { |
| int errors = 0; | int errors = 0; |
| if (!handle) | if (!handle) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); | LT__SETERROR (INVALID_HANDLE); |
| ++errors; | ++errors; |
| } | } |
| else | else |
| { | { |
| LT_DLSET_FLAG (handle, LT_DLRESIDENT_FLAG); | handle->info.is_resident = 1; |
| } | } |
| return errors; | return errors; |
| } | } |
| int | int |
| lt_dlisresident (handle) | lt_dlisresident (lt_dlhandle handle) |
| lt_dlhandle handle; | |
| { | { |
| if (!handle) | if (!handle) |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); | LT__SETERROR (INVALID_HANDLE); |
| return -1; | return -1; |
| } | } |
| Line 3631 lt_dlisresident (handle) | Line 2278 lt_dlisresident (handle) |
| /* --- MODULE INFORMATION --- */ | /* --- MODULE INFORMATION --- */ |
| const lt_dlinfo * | typedef struct { |
| lt_dlgetinfo (handle) | const char *id_string; |
| lt_dlhandle handle; | lt_dlhandle_interface *iface; |
| { | } lt__interface_id; |
| if (!handle) | |
| { | lt_dlinterface_id |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_HANDLE)); | lt_dlinterface_register (const char *id_string, lt_dlhandle_interface *iface) |
| return 0; | { |
| } | lt__interface_id *interface_id = (lt__interface_id *) lt__malloc (sizeof *interface_id); |
| return &(handle->info); | /* If lt__malloc fails, it will LT__SETERROR (NO_MEMORY), which |
| } | can then be detected with lt_dlerror() if we return 0. */ |
| if (interface_id) | |
| lt_dlhandle | { |
| lt_dlhandle_next (place) | interface_id->id_string = lt__strdup (id_string); |
| lt_dlhandle place; | if (!interface_id->id_string) |
| { | FREE (interface_id); |
| return place ? place->next : handles; | else |
| } | interface_id->iface = iface; |
| int | |
| lt_dlforeach (func, data) | |
| int (*func) LT_PARAMS((lt_dlhandle handle, lt_ptr data)); | |
| lt_ptr data; | |
| { | |
| int errors = 0; | |
| lt_dlhandle cur; | |
| LT_DLMUTEX_LOCK (); | |
| cur = handles; | |
| while (cur) | |
| { | |
| lt_dlhandle tmp = cur; | |
| cur = cur->next; | |
| if ((*func) (tmp, data)) | |
| { | |
| ++errors; | |
| break; | |
| } | |
| } | } |
| LT_DLMUTEX_UNLOCK (); | return (lt_dlinterface_id) interface_id; |
| return errors; | |
| } | } |
| lt_dlcaller_id | void lt_dlinterface_free (lt_dlinterface_id key) |
| lt_dlcaller_register () | |
| { | { |
| static lt_dlcaller_id last_caller_id = 0; | lt__interface_id *interface_id = (lt__interface_id *)key; |
| int result; | FREE (interface_id->id_string); |
| FREE (interface_id); | |
| LT_DLMUTEX_LOCK (); | |
| result = ++last_caller_id; | |
| LT_DLMUTEX_UNLOCK (); | |
| return result; | |
| } | } |
| lt_ptr | void * |
| lt_dlcaller_set_data (key, handle, data) | lt_dlcaller_set_data (lt_dlinterface_id key, lt_dlhandle handle, void *data) |
| lt_dlcaller_id key; | |
| lt_dlhandle handle; | |
| lt_ptr data; | |
| { | { |
| int n_elements = 0; | int n_elements = 0; |
| lt_ptr stale = NULL; | void *stale = (void *) 0; |
| lt_dlhandle cur = handle; | |
| int i; | int i; |
| /* This needs to be locked so that the caller data can be updated | if (cur->interface_data) |
| simultaneously by different threads. */ | while (cur->interface_data[n_elements].key) |
| LT_DLMUTEX_LOCK (); | |
| if (handle->caller_data) | |
| while (handle->caller_data[n_elements].key) | |
| ++n_elements; | ++n_elements; |
| for (i = 0; i < n_elements; ++i) | for (i = 0; i < n_elements; ++i) |
| { | { |
| if (handle->caller_data[i].key == key) | if (cur->interface_data[i].key == key) |
| { | { |
| stale = handle->caller_data[i].data; | stale = cur->interface_data[i].data; |
| break; | break; |
| } | } |
| } | } |
| /* Ensure that there is enough room in this handle's caller_data | /* Ensure that there is enough room in this handle's interface_data |
| array to accept a new element (and an empty end marker). */ | array to accept a new element (and an empty end marker). */ |
| if (i == n_elements) | if (i == n_elements) |
| { | { |
| lt_caller_data *temp | lt_interface_data *temp |
| = LT_DLREALLOC (lt_caller_data, handle->caller_data, 2+ n_elements); | = REALLOC (lt_interface_data, cur->interface_data, 2+ n_elements); |
| if (!temp) | if (!temp) |
| { | { |
| stale = NULL; | stale = 0; |
| goto done; | goto done; |
| } | } |
| handle->caller_data = temp; | cur->interface_data = temp; |
| /* We only need this if we needed to allocate a new caller_data. */ | /* We only need this if we needed to allocate a new interface_data. */ |
| handle->caller_data[i].key = key; | cur->interface_data[i].key = key; |
| handle->caller_data[1+ i].key = 0; | cur->interface_data[1+ i].key = 0; |
| } | } |
| handle->caller_data[i].data = data; | cur->interface_data[i].data = data; |
| done: | done: |
| LT_DLMUTEX_UNLOCK (); | |
| return stale; | return stale; |
| } | } |
| lt_ptr | void * |
| lt_dlcaller_get_data (key, handle) | lt_dlcaller_get_data (lt_dlinterface_id key, lt_dlhandle handle) |
| lt_dlcaller_id key; | |
| lt_dlhandle handle; | |
| { | |
| lt_ptr result = (lt_ptr) 0; | |
| /* This needs to be locked so that the caller data isn't updated by | |
| another thread part way through this function. */ | |
| LT_DLMUTEX_LOCK (); | |
| /* Locate the index of the element with a matching KEY. */ | |
| { | |
| int i; | |
| for (i = 0; handle->caller_data[i].key; ++i) | |
| { | |
| if (handle->caller_data[i].key == key) | |
| { | |
| result = handle->caller_data[i].data; | |
| break; | |
| } | |
| } | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| return result; | |
| } | |
| /* --- USER MODULE LOADER API --- */ | |
| int | |
| lt_dlloader_add (place, dlloader, loader_name) | |
| lt_dlloader *place; | |
| const struct lt_user_dlloader *dlloader; | |
| const char *loader_name; | |
| { | |
| int errors = 0; | |
| lt_dlloader *node = NULL, *ptr = NULL; | |
| if ((dlloader == NULL) /* diagnose null parameters */ | |
| || (dlloader->module_open == NULL) | |
| || (dlloader->module_close == NULL) | |
| || (dlloader->find_sym == NULL)) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); | |
| return 1; | |
| } | |
| /* Create a new dlloader node with copies of the user callbacks. */ | |
| node = LT_EMALLOC (lt_dlloader, 1); | |
| if (!node) | |
| return 1; | |
| node->next = NULL; | |
| node->loader_name = loader_name; | |
| node->sym_prefix = dlloader->sym_prefix; | |
| node->dlloader_exit = dlloader->dlloader_exit; | |
| node->module_open = dlloader->module_open; | |
| node->module_close = dlloader->module_close; | |
| node->find_sym = dlloader->find_sym; | |
| node->dlloader_data = dlloader->dlloader_data; | |
| LT_DLMUTEX_LOCK (); | |
| if (!loaders) | |
| { | |
| /* If there are no loaders, NODE becomes the list! */ | |
| loaders = node; | |
| } | |
| else if (!place) | |
| { | |
| /* If PLACE is not set, add NODE to the end of the | |
| LOADERS list. */ | |
| for (ptr = loaders; ptr->next; ptr = ptr->next) | |
| { | |
| /*NOWORK*/; | |
| } | |
| ptr->next = node; | |
| } | |
| else if (loaders == place) | |
| { | |
| /* If PLACE is the first loader, NODE goes first. */ | |
| node->next = place; | |
| loaders = node; | |
| } | |
| else | |
| { | |
| /* Find the node immediately preceding PLACE. */ | |
| for (ptr = loaders; ptr->next != place; ptr = ptr->next) | |
| { | |
| /*NOWORK*/; | |
| } | |
| if (ptr->next != place) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); | |
| ++errors; | |
| } | |
| else | |
| { | |
| /* Insert NODE between PTR and PLACE. */ | |
| node->next = place; | |
| ptr->next = node; | |
| } | |
| } | |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | |
| } | |
| int | |
| lt_dlloader_remove (loader_name) | |
| const char *loader_name; | |
| { | { |
| lt_dlloader *place = lt_dlloader_find (loader_name); | void *result = (void *) 0; |
| lt_dlhandle handle; | lt_dlhandle cur = handle; |
| int errors = 0; | |
| if (!place) | /* Locate the index of the element with a matching KEY. */ |
| { | if (cur->interface_data) |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); | |
| return 1; | |
| } | |
| LT_DLMUTEX_LOCK (); | |
| /* Fail if there are any open modules which use this loader. */ | |
| for (handle = handles; handle; handle = handle->next) | |
| { | |
| if (handle->loader == place) | |
| { | |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (REMOVE_LOADER)); | |
| ++errors; | |
| goto done; | |
| } | |
| } | |
| if (place == loaders) | |
| { | |
| /* PLACE is the first loader in the list. */ | |
| loaders = loaders->next; | |
| } | |
| else | |
| { | { |
| /* Find the loader before the one being removed. */ | int i; |
| lt_dlloader *prev; | for (i = 0; cur->interface_data[i].key; ++i) |
| for (prev = loaders; prev->next; prev = prev->next) | |
| { | { |
| if (!strcmp (prev->next->loader_name, loader_name)) | if (cur->interface_data[i].key == key) |
| { | { |
| result = cur->interface_data[i].data; | |
| break; | break; |
| } | } |
| } | } |
| place = prev->next; | |
| prev->next = prev->next->next; | |
| } | |
| if (place->dlloader_exit) | |
| { | |
| errors = place->dlloader_exit (place->dlloader_data); | |
| } | } |
| LT_DLFREE (place); | return result; |
| done: | |
| LT_DLMUTEX_UNLOCK (); | |
| return errors; | |
| } | } |
| lt_dlloader * | const lt_dlinfo * |
| lt_dlloader_next (place) | lt_dlgetinfo (lt_dlhandle handle) |
| lt_dlloader *place; | |
| { | { |
| lt_dlloader *next; | if (!handle) |
| { | |
| LT_DLMUTEX_LOCK (); | LT__SETERROR (INVALID_HANDLE); |
| next = place ? place->next : loaders; | return 0; |
| LT_DLMUTEX_UNLOCK (); | } |
| return next; | return &(handle->info); |
| } | } |
| const char * | |
| lt_dlloader_name (place) | lt_dlhandle |
| lt_dlloader *place; | lt_dlhandle_iterate (lt_dlinterface_id iface, lt_dlhandle place) |
| { | { |
| const char *name = NULL; | lt_dlhandle handle = place; |
| lt__interface_id *iterator = (lt__interface_id *) iface; | |
| if (place) | assert (iface); /* iface is a required argument */ |
| { | |
| LT_DLMUTEX_LOCK (); | if (!handle) |
| name = place ? place->loader_name : 0; | handle = handles; |
| LT_DLMUTEX_UNLOCK (); | |
| } | |
| else | else |
| handle = handle->next; | |
| /* advance while the interface check fails */ | |
| while (handle && iterator->iface | |
| && ((*iterator->iface) (handle, iterator->id_string) != 0)) | |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); | handle = handle->next; |
| } | } |
| return name; | return handle; |
| } | } |
| lt_user_data * | |
| lt_dlloader_data (place) | lt_dlhandle |
| lt_dlloader *place; | lt_dlhandle_fetch (lt_dlinterface_id iface, const char *module_name) |
| { | { |
| lt_user_data *data = NULL; | lt_dlhandle handle = 0; |
| if (place) | assert (iface); /* iface is a required argument */ |
| { | |
| LT_DLMUTEX_LOCK (); | while ((handle = lt_dlhandle_iterate (iface, handle))) |
| data = place ? &(place->dlloader_data) : 0; | |
| LT_DLMUTEX_UNLOCK (); | |
| } | |
| else | |
| { | { |
| LT_DLMUTEX_SETERROR (LT_DLSTRERROR (INVALID_LOADER)); | lt_dlhandle cur = handle; |
| if (cur && cur->info.name && streq (cur->info.name, module_name)) | |
| break; | |
| } | } |
| return data; | return handle; |
| } | } |
| lt_dlloader * | |
| lt_dlloader_find (loader_name) | int |
| const char *loader_name; | lt_dlhandle_map (lt_dlinterface_id iface, |
| int (*func) (lt_dlhandle handle, void *data), void *data) | |
| { | { |
| lt_dlloader *place = NULL; | lt__interface_id *iterator = (lt__interface_id *) iface; |
| lt_dlhandle cur = handles; | |
| LT_DLMUTEX_LOCK (); | assert (iface); /* iface is a required argument */ |
| for (place = loaders; place; place = place->next) | |
| while (cur) | |
| { | { |
| if (strcmp (place->loader_name, loader_name) == 0) | int errorcode = 0; |
| /* advance while the interface check fails */ | |
| while (cur && iterator->iface | |
| && ((*iterator->iface) (cur, iterator->id_string) != 0)) | |
| { | { |
| break; | cur = cur->next; |
| } | } |
| if ((errorcode = (*func) (cur, data)) != 0) | |
| return errorcode; | |
| } | } |
| LT_DLMUTEX_UNLOCK (); | |
| return place; | return 0; |
| } | } |