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/* 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 *ptr ? 0 : 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;
}
}
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