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57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
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/**
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* \file dlmisc.c
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* \brief dynamic loader helpers
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* \author Jaroslav Kysela <perex@suse.cz>
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* \date 2001
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*
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* Dynamic loader helpers
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*/
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/*
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* Dynamic loader helpers
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* Copyright (c) 2000 by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program 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 Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <dlfcn.h>
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#include "local.h"
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/**
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* \brief Verify dynamically loaded symbol
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* \param handle dlopen handle
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* \param name name of symbol
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* \param version version of symbol
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* \return zero is success, otherwise a negative error code
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*/
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int snd_dlsym_verify(void *handle, const char *name, const char *version)
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{
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int res;
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char *vname;
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if (handle == NULL)
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return -EINVAL;
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vname = alloca(1 + strlen(name) + strlen(version) + 1);
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vname[0] = '_';
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strcpy(vname + 1, name);
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strcat(vname, version);
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res = dlsym(handle, vname) == NULL ? -ENOENT : 0;
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printf("dlsym verify: %i, vname = '%s'\n", res, vname);
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if (res < 0)
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SNDERR("unable to verify version for symbol %s", name);
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return res;
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}
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