diff options
Diffstat (limited to 'wsrep/wsrep_loader.c')
| -rw-r--r-- | wsrep/wsrep_loader.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/wsrep/wsrep_loader.c b/wsrep/wsrep_loader.c index 5c4e61e1832..f4d5991339e 100644 --- a/wsrep/wsrep_loader.c +++ b/wsrep/wsrep_loader.c @@ -37,6 +37,22 @@ static wsrep_log_cb_t logger = default_logger; * Library loader **************************************************************************/ +static int wsrep_check_iface_version(const char* found, const char* iface_ver) +{ + const size_t msg_len = 128; + char msg[128]; + + if (strcmp(found, iface_ver)) { + snprintf (msg, msg_len, + "provider interface version mismatch: need '%s', found '%s'", + iface_ver, found); + logger (WSREP_LOG_ERROR, msg); + return EINVAL; + } + + return 0; +} + static int verify(const wsrep_t *wh, const char *iface_ver) { char msg[128]; @@ -50,13 +66,8 @@ static int verify(const wsrep_t *wh, const char *iface_ver) VERIFY(wh); VERIFY(wh->version); - if (strcmp(wh->version, iface_ver)) { - snprintf (msg, sizeof(msg), - "provider interface version mismatch: need '%s', found '%s'", - iface_ver, wh->version); - logger (WSREP_LOG_ERROR, msg); + if (wsrep_check_iface_version(wh->version, iface_ver)) return EINVAL; - } VERIFY(wh->init); VERIFY(wh->options_set); @@ -107,6 +118,15 @@ static wsrep_loader_fun wsrep_dlf(void *dlh, const char *sym) return alias.dlfun; } +static int wsrep_check_version_symbol(void *dlh) +{ + char** dlversion = NULL; + dlversion = (char**) dlsym(dlh, "wsrep_interface_version"); + if (dlversion == NULL) + return 0; + return wsrep_check_iface_version(*dlversion, WSREP_INTERFACE_VERSION); +} + extern int wsrep_dummy_loader(wsrep_t *w); int wsrep_load(const char *spec, wsrep_t **hptr, wsrep_log_cb_t log_cb) @@ -152,6 +172,11 @@ int wsrep_load(const char *spec, wsrep_t **hptr, wsrep_log_cb_t log_cb) goto out; } + if (wsrep_check_version_symbol(dlh) != 0) { + ret = EINVAL; + goto out; + } + if ((ret = (*dlfun)(*hptr)) != 0) { snprintf(msg, sizeof(msg)-1, "wsrep_load(): loader failed: %s", strerror(ret)); |