mirror of
https://github.com/MariaDB/server.git
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135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#define dlsym(lib, name) GetProcAddress((HMODULE)lib, name)
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#define dlopen(libname, unused) LoadLibraryEx(libname, NULL, 0)
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#define dlclose(lib) FreeLibrary((HMODULE)lib)
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#elif defined(HAVE_DLFCN_H)
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#include <dlfcn.h>
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#else
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#define NO_DLL
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#endif
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#ifndef NO_DLL
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#include "../../../../wsrep-lib/wsrep-API/v26/wsrep_api.h"
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/**************************************************************************
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* Library loader
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**************************************************************************/
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static int wsrep_check_iface_version(const char *found, const char *iface_ver)
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{
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if (strcmp(found, iface_ver)) {
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return ERANGE;
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}
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return 0;
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}
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typedef int (*wsrep_loader_fun)(wsrep_t*);
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static wsrep_loader_fun wsrep_dlf(void *dlh, const char *sym)
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{
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union {
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wsrep_loader_fun dlfun;
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void *obj;
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} alias;
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alias.obj = dlsym(dlh, sym);
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return alias.dlfun;
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}
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static int wsrep_check_version_symbol(void *dlh)
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{
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char** dlversion = NULL;
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dlversion = (char**) dlsym(dlh, "wsrep_interface_version");
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if (dlversion == NULL)
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return EINVAL;
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return wsrep_check_iface_version(*dlversion, WSREP_INTERFACE_VERSION);
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}
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static int wsrep_print_version(void *dlh)
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{
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char** dlversion = NULL;
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dlversion = (char**) dlsym(dlh, "wsrep_interface_version");
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if (dlversion == NULL)
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return EINVAL;
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printf("found: %s, need: %s\n", *dlversion, WSREP_INTERFACE_VERSION);
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return 0;
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}
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int main(int argc, char **argv)
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{
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int rc = EINVAL;
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void *dlh;
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wsrep_loader_fun dlfun;
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const char *provider= getenv("WSREP_PROVIDER");
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if (!provider)
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{
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fprintf(stderr, "WSREP_PROVIDER is not set\n");
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return 1;
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}
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if (!(dlh = dlopen(provider, RTLD_NOW | RTLD_LOCAL)))
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{
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fprintf(stderr, "Can't open WSREP_PROVIDER (%s) library, error: %s\n",
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provider, dlerror());
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goto err;
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}
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if (!(dlfun = wsrep_dlf(dlh, "wsrep_loader")))
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{
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fprintf(stderr, "Can't find 'wsrep_loader' symbol in %s\n",
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provider);
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goto err;
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}
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if (argc < 2 || strcmp(argv[1], "-p")) {
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rc = wsrep_check_version_symbol(dlh);
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}
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else {
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rc = wsrep_print_version(dlh);
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}
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err:
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if (dlh) dlclose(dlh);
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if (rc == 0)
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return 0;
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else if (rc == ERANGE)
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return 2;
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else
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return 1;
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}
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#else
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int main(void)
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{
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return 1;
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}
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#endif
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