Branch data     Line data    Source code

       1                 :            : /***
       2                 :            :   This file is part of PulseAudio.
       3                 :            : 
       4                 :            :   Copyright 2004-2006 Lennart Poettering
       5                 :            :   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
       6                 :            : 
       7                 :            :   PulseAudio is free software; you can redistribute it and/or modify
       8                 :            :   it under the terms of the GNU Lesser General Public License as published
       9                 :            :   by the Free Software Foundation; either version 2.1 of the License,
      10                 :            :   or (at your option) any later version.
      11                 :            : 
      12                 :            :   PulseAudio is distributed in the hope that it will be useful, but
      13                 :            :   WITHOUT ANY WARRANTY; without even the implied warranty of
      14                 :            :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
      15                 :            :   General Public License for more details.
      16                 :            : 
      17                 :            :   You should have received a copy of the GNU Lesser General Public License
      18                 :            :   along with PulseAudio; if not, write to the Free Software
      19                 :            :   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
      20                 :            :   USA.
      21                 :            : ***/
      22                 :            : 
      23                 :            : #ifdef HAVE_CONFIG_H
      24                 :            : #include <config.h>
      25                 :            : #endif
      26                 :            : 
      27                 :            : #include <stdlib.h>
      28                 :            : #include <ctype.h>
      29                 :            : 
      30                 :            : #include <pulse/xmalloc.h>
      31                 :            : 
      32                 :            : #include <pulsecore/core-util.h>
      33                 :            : #include <pulsecore/macro.h>
      34                 :            : 
      35                 :            : #include "ltdl-helper.h"
      36                 :            : 
      37                 :          0 : pa_void_func_t pa_load_sym(lt_dlhandle handle, const char *module, const char *symbol) {
      38                 :            :     char *sn, *c;
      39                 :            :     pa_void_func_t f;
      40                 :            : 
      41         [ #  # ]:          0 :     pa_assert(handle);
      42         [ #  # ]:          0 :     pa_assert(symbol);
      43                 :            : 
      44                 :          0 :     f = (pa_void_func_t) lt_dlsym(handle, symbol);
      45                 :            : 
      46         [ #  # ]:          0 :     if (f)
      47                 :            :         return f;
      48                 :            : 
      49         [ #  # ]:          0 :     if (!module)
      50                 :            :         return NULL;
      51                 :            : 
      52                 :            :     /* As the .la files might have been cleansed from the system, we should
      53                 :            :      * try with the ltdl prefix as well. */
      54                 :            : 
      55                 :          0 :     sn = pa_sprintf_malloc("%s_LTX_%s", module, symbol);
      56                 :            : 
      57         [ #  # ]:          0 :     for (c = sn; *c; c++)
      58         [ #  # ]:          0 :         if (!isalnum(*c))
      59                 :          0 :             *c = '_';
      60                 :            : 
      61                 :          0 :     f = (pa_void_func_t) lt_dlsym(handle, sn);
      62                 :          0 :     pa_xfree(sn);
      63                 :            : 
      64                 :          0 :     return f;
      65                 :            : }