mirror of
git://git.savannah.gnu.org/libtool.git
synced 2024-12-27 07:09:26 +08:00
7caaca4a5c
libltdl/strchr.c, libltdl/strcmp.c, libltdl/strrchr.c: Remove half-assed pre-c89 support entirely. * libltdl/lt__private.h: Don't refer to lt__pre89.h. * libltdl/Makefile.am (ltdldata_DATA): Remove references to deleted files. * NEWS: Mention it.
122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/* loader-dlopen.c -- dynamic linking with dlopen/dlsym
|
|
Copyright (C) 1998, 1999, 2000, 2004 Free Software Foundation, Inc.
|
|
Originally by Thomas Tanner <tanner@ffii.org>
|
|
|
|
NOTE: The canonical source of this file is maintained with the
|
|
GNU Libtool package. Report bugs to bug-libtool@gnu.org.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
As a special exception to the GNU Lesser General Public License,
|
|
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
|
|
distribution terms that you use for the rest of that program.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA
|
|
|
|
*/
|
|
|
|
#include "lt__private.h"
|
|
#include "lt_dlloader.h"
|
|
|
|
#if defined(HAVE_DLFCN_H)
|
|
# include <dlfcn.h>
|
|
#endif
|
|
|
|
#if defined(HAVE_SYS_DL_H)
|
|
# include <sys/dl.h>
|
|
#endif
|
|
|
|
/* We may have to define LT_LAZY_OR_NOW in the command line if we
|
|
find out it does not work in some platform. */
|
|
#if !defined(LT_LAZY_OR_NOW)
|
|
# if defined(RTLD_LAZY)
|
|
# define LT_LAZY_OR_NOW RTLD_LAZY
|
|
# else
|
|
# if defined(DL_LAZY)
|
|
# define LT_LAZY_OR_NOW DL_LAZY
|
|
# endif
|
|
# endif /* !RTLD_LAZY */
|
|
#endif
|
|
#if !defined(LT_LAZY_OR_NOW)
|
|
# if defined(RTLD_NOW)
|
|
# define LT_LAZY_OR_NOW RTLD_NOW
|
|
# else
|
|
# if defined(DL_NOW)
|
|
# define LT_LAZY_OR_NOW DL_NOW
|
|
# endif
|
|
# endif /* !RTLD_NOW */
|
|
#endif
|
|
#if !defined(LT_LAZY_OR_NOW)
|
|
# define LT_LAZY_OR_NOW 0
|
|
#endif /* !LT_LAZY_OR_NOW */
|
|
|
|
#if defined(HAVE_DLERROR)
|
|
# define DLERROR(arg) dlerror ()
|
|
#else
|
|
# define DLERROR(arg) LT__STRERROR (arg)
|
|
#endif
|
|
|
|
#define DL__MUTEX_SETERROR(errorcode) \
|
|
LT__MUTEX_SETERRORSTR (DLERROR (errorcode))
|
|
|
|
static lt_module
|
|
sys_dl_open (lt_user_data loader_data, const char *filename)
|
|
{
|
|
lt_module module = dlopen (filename, LT_LAZY_OR_NOW);
|
|
|
|
if (!module)
|
|
{
|
|
DL__MUTEX_SETERROR (CANNOT_OPEN);
|
|
}
|
|
|
|
return module;
|
|
}
|
|
|
|
static int
|
|
sys_dl_close (lt_user_data loader_data, lt_module module)
|
|
{
|
|
int errors = 0;
|
|
|
|
if (dlclose (module) != 0)
|
|
{
|
|
DL__MUTEX_SETERROR (CANNOT_CLOSE);
|
|
++errors;
|
|
}
|
|
|
|
return errors;
|
|
}
|
|
|
|
static void *
|
|
sys_dl_sym (lt_user_data loader_data, lt_module module, const char *symbol)
|
|
{
|
|
void *address = dlsym (module, symbol);
|
|
|
|
if (!address)
|
|
{
|
|
DL__MUTEX_SETERROR (SYMBOL_NOT_FOUND);
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
struct lt_user_dlloader lt__sys_dl =
|
|
{
|
|
# if defined(NEED_USCORE)
|
|
"_",
|
|
# else
|
|
0,
|
|
# endif
|
|
sys_dl_open, sys_dl_close, sys_dl_sym, 0, 0 };
|