/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include "uv.h" #include "internal.h" #include <dlfcn.h> #include <errno.h> #include <string.h> #include <locale.h> static int uv__dlerror(uv_lib_t* lib); int uv_dlopen(const char* filename, uv_lib_t* lib) { dlerror(); /* Reset error status. */ lib->errmsg = NULL; lib->handle = dlopen(filename, RTLD_LAZY); return lib->handle ? 0 : uv__dlerror(lib); } void uv_dlclose(uv_lib_t* lib) { uv__free(lib->errmsg); lib->errmsg = NULL; if (lib->handle) { /* Ignore errors. No good way to signal them without leaking memory. */ dlclose(lib->handle); lib->handle = NULL; } } int uv_dlsym(uv_lib_t* lib, const char* name, void** ptr) { dlerror(); /* Reset error status. */ *ptr = dlsym(lib->handle, name); return uv__dlerror(lib); } const char* uv_dlerror(const uv_lib_t* lib) { return lib->errmsg ? lib->errmsg : "no error"; } static int uv__dlerror(uv_lib_t* lib) { const char* errmsg; uv__free(lib->errmsg); errmsg = dlerror(); if (errmsg) { lib->errmsg = uv__strdup(errmsg); return -1; } else { lib->errmsg = NULL; return 0; } }