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150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
/* lt__private.h -- internal apis for libltdl
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Copyright (C) 2004-2008, 2011-2015 Free Software Foundation, Inc.
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Written by Gary V. Vaughan, 2004
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NOTE: The canonical source of this file is maintained with the
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GNU Libtool package. Report bugs to bug-libtool@gnu.org.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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As a special exception to the GNU Lesser General Public License,
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if you distribute this file as part of a program or library that
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is built using GNU libtool, you may include this file under the
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same distribution terms that you use for the rest of that program.
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GNU Libltdl is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with GNU Libltdl; see the file COPYING.LIB. If not, a
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copy con be downloaded from http://www.gnu.org/licenses/lgpl.html,
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or obtained by writing to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined LT__PRIVATE_H
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#define LT__PRIVATE_H 1
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#if defined LT_CONFIG_H
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# include LT_CONFIG_H
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#else
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <ctype.h>
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#if defined HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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/* Import internal interfaces... */
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#include "lt__alloc.h"
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#include "lt__dirent.h"
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#include "lt__strl.h"
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#include "lt__glibc.h"
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/* ...and all exported interfaces. */
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#include "ltdl.h"
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#if defined WITH_DMALLOC
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# include <dmalloc.h>
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#endif
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/* DLL building support on win32 hosts; mostly to workaround their
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ridiculous implementation of data symbol exporting. */
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#ifndef LT_GLOBAL_DATA
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# if defined __WINDOWS__ || defined __CYGWIN__
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# if defined DLL_EXPORT /* defined by libtool (if required) */
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# define LT_GLOBAL_DATA __declspec(dllexport)
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# endif
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# endif
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# ifndef LT_GLOBAL_DATA
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# define LT_GLOBAL_DATA /* static linking or !__WINDOWS__ */
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# endif
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#endif
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#ifndef __attribute__
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# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
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# define __attribute__(x)
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# endif
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#endif
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#ifndef LT__UNUSED
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# define LT__UNUSED __attribute__ ((__unused__))
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#endif
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LT_BEGIN_C_DECLS
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#if !defined errno
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extern int errno;
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#endif
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LT_SCOPE void lt__alloc_die_callback (void);
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/* For readability: */
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#define STRNEQ(s1, s2) (strcmp((s1), (s2)) != 0)
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#define STREQ(s1, s2) (strcmp((s1), (s2)) == 0)
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/* --- OPAQUE STRUCTURES DECLARED IN LTDL.H --- */
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/* This type is used for the array of interface data sets in each handler. */
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typedef struct {
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lt_dlinterface_id key;
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void * data;
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} lt_interface_data;
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struct lt__handle {
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lt_dlhandle next;
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const lt_dlvtable * vtable; /* dlopening interface */
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lt_dlinfo info; /* user visible fields */
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int depcount; /* number of dependencies */
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lt_dlhandle * deplibs; /* dependencies */
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lt_module module; /* system module handle */
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void * system; /* system specific data */
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lt_interface_data * interface_data; /* per caller associated data */
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int flags; /* various boolean stats */
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};
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struct lt__advise {
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unsigned int try_ext:1; /* try system library extensions. */
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unsigned int is_resident:1; /* module can't be unloaded. */
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unsigned int is_symglobal:1; /* module symbols can satisfy
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subsequently loaded modules. */
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unsigned int is_symlocal:1; /* module symbols are only available
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locally. */
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unsigned int try_preload_only:1;/* only preloaded modules will be tried. */
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};
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/* --- ERROR HANDLING --- */
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/* Extract the diagnostic strings from the error table macro in the same
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order as the enumerated indices in lt_error.h. */
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#define LT__STRERROR(name) lt__error_string(LT_CONC(LT_ERROR_,name))
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#define LT__GETERROR(lvalue) (lvalue) = lt__get_last_error()
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#define LT__SETERRORSTR(errormsg) lt__set_last_error(errormsg)
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#define LT__SETERROR(errorcode) LT__SETERRORSTR(LT__STRERROR(errorcode))
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LT_SCOPE const char *lt__error_string (int errorcode);
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LT_SCOPE const char *lt__get_last_error (void);
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LT_SCOPE const char *lt__set_last_error (const char *errormsg);
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LT_END_C_DECLS
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#endif /*!defined LT__PRIVATE_H*/
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