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57 lines
958 B
57 lines
958 B
15 years ago
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <dlfcn.h>
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#define PATH_LENGTH 256
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int main(int argc, char * argv[])
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{
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char path[PATH_LENGTH], *msg = NULL;
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const char* (*fmt)();
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void *module;
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getcwd(path, PATH_LENGTH);
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strcat(path, "/");
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strcat(path, "module.so");
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/* Load module */
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module = dlopen(path, RTLD_NOW);
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/* Error ! */
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if(!module)
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{
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msg = dlerror();
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if(msg != NULL)
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{
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dlclose(module);
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exit(1);
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}
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}
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/* Try to resolve function "fmt_info()" */
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fmt = dlsym(module, "fmt_info");
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msg = dlerror();
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if(msg != NULL)
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{
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perror(msg);
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dlclose(module);
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exit(1);
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}
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/* call fmt_info() through a pointer*/
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printf("%s\n", fmt());
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/* close module */
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if(dlclose(module))
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{
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perror("error");
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exit(1);
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}
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return 0;
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}
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