/*
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* Copyright (C) Siemens AG, 2018
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <assert.h>
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#include <errno.h>
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#include <dlfcn.h>
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#include <error.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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static void *my_dlopen(char *name)
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{
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void *handle;
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char buf[PATH_MAX];
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int flags = RTLD_LAZY|RTLD_GLOBAL;
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handle = dlopen(name, flags);
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if (!handle) {
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// no matter what the error was (errno not set) try it again
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// with absolute path, the first one is there to enable
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// LD_LIBRARY_PATH
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snprintf(buf, PATH_MAX, "%s/%s", XENO_TEST_DIR, name);
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handle = dlopen(buf, flags);
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if (!handle)
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error(1, errno, dlerror());
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}
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return handle;
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}
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static int my_dlcall(char *lname, char *fname, void **handle)
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{
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int (*func)(void);
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char *errstr;
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*handle = my_dlopen(lname);
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func = dlsym(*handle, fname);
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errstr = dlerror();
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if (errstr)
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error(1, errno, "%s", errstr);
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return func();
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}
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int main(int argc, char *const argv[])
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{
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void *handlea, *handlep;
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int ret;
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ret = my_dlcall("libalchemy-test.so", "libalchemy_func", &handlea);
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if (ret)
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error(1, errno, "libalchemy_func: %s", strerror(-ret));
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ret = my_dlcall("libposix-test.so", "libposix_func", &handlep);
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if (ret)
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error(1, errno, "libposix_func: %s", strerror(-ret));
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return 0;
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}
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