static bool load_handler(void *arg, bool is_sect, const char *key, const char *val)
{
struct LoaderCtx *ctx = arg;
if (is_sect) {
if (ctx->cur_sect)
free(ctx->cur_sect);
ctx->cur_sect = strdup(key);
if (!ctx->cur_sect)
return false;
return fill_defaults(ctx);
} else if (!ctx->cur_sect) {
log_error("load_init_file: value without section: %s", key);
return false;
} else {
return cf_set(ctx->cf, ctx->cur_sect, key, val);
}
}
int
xlator_dynload (xlator_t *xl)
{
int ret = -1;
char *name = NULL;
void *handle = NULL;
volume_opt_list_t *vol_opt = NULL;
class_methods_t *vtbl = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xl, out);
INIT_LIST_HEAD (&xl->volume_options);
ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xl->type);
if (-1 == ret) {
gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");
goto out;
}
ret = -1;
gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name);
handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
if (!handle) {
gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());
goto out;
}
xl->dlhandle = handle;
if (!(xl->fops = dlsym (handle, "fops"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fops) on %s",
dlerror ());
goto out;
}
if (!(xl->cbks = dlsym (handle, "cbks"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(cbks) on %s",
dlerror ());
goto out;
}
/*
* If class_methods exists, its contents override any definitions of
* init or fini for that translator. Otherwise, we fall back to the
* older method of looking for init and fini directly.
*/
vtbl = dlsym(handle,"class_methods");
if (vtbl) {
xl->init = vtbl->init;
xl->fini = vtbl->fini;
xl->reconfigure = vtbl->reconfigure;
xl->notify = vtbl->notify;
}
else {
if (!(*VOID(&xl->init) = dlsym (handle, "init"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(init) on %s",
dlerror ());
goto out;
}
if (!(*VOID(&(xl->fini)) = dlsym (handle, "fini"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fini) on %s",
dlerror ());
goto out;
}
if (!(*VOID(&(xl->reconfigure)) = dlsym (handle,
"reconfigure"))) {
gf_log ("xlator", GF_LOG_TRACE,
"dlsym(reconfigure) on %s -- neglecting",
dlerror());
}
if (!(*VOID(&(xl->notify)) = dlsym (handle, "notify"))) {
gf_log ("xlator", GF_LOG_TRACE,
"dlsym(notify) on %s -- neglecting",
dlerror ());
}
}
if (!(xl->dumpops = dlsym (handle, "dumpops"))) {
gf_log ("xlator", GF_LOG_TRACE,
"dlsym(dumpops) on %s -- neglecting", dlerror ());
}
if (!(*VOID(&(xl->mem_acct_init)) = dlsym (handle, "mem_acct_init"))) {
gf_log (xl->name, GF_LOG_TRACE,
"dlsym(mem_acct_init) on %s -- neglecting",
dlerror ());
}
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
if (!vol_opt) {
goto out;
}
if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
dlerror ();
gf_log (xl->name, GF_LOG_TRACE,
"Strict option validation not enforced -- neglecting");
}
INIT_LIST_HEAD (&vol_opt->list);
list_add_tail (&vol_opt->list, &xl->volume_options);
fill_defaults (xl);
ret = 0;
out:
GF_FREE (name);
return ret;
}
int
xlator_dynload (xlator_t *xl)
{
int ret = -1;
char *name = NULL;
void *handle = NULL;
volume_opt_list_t *vol_opt = NULL;
GF_VALIDATE_OR_GOTO ("xlator", xl, out);
INIT_LIST_HEAD (&xl->volume_options);
ret = gf_asprintf (&name, "%s/%s.so", XLATORDIR, xl->type);
if (-1 == ret) {
gf_log ("xlator", GF_LOG_ERROR, "asprintf failed");
goto out;
}
ret = -1;
gf_log ("xlator", GF_LOG_TRACE, "attempt to load file %s", name);
handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
if (!handle) {
gf_log ("xlator", GF_LOG_WARNING, "%s", dlerror ());
goto out;
}
xl->dlhandle = handle;
if (!(xl->fops = dlsym (handle, "fops"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fops) on %s",
dlerror ());
goto out;
}
if (!(xl->cbks = dlsym (handle, "cbks"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(cbks) on %s",
dlerror ());
goto out;
}
if (!(xl->init = dlsym (handle, "init"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(init) on %s",
dlerror ());
goto out;
}
if (!(xl->fini = dlsym (handle, "fini"))) {
gf_log ("xlator", GF_LOG_WARNING, "dlsym(fini) on %s",
dlerror ());
goto out;
}
if (!(xl->notify = dlsym (handle, "notify"))) {
gf_log ("xlator", GF_LOG_DEBUG,
"dlsym(notify) on %s -- neglecting", dlerror ());
}
if (!(xl->dumpops = dlsym (handle, "dumpops"))) {
gf_log ("xlator", GF_LOG_DEBUG,
"dlsym(dumpops) on %s -- neglecting", dlerror ());
}
if (!(xl->mem_acct_init = dlsym (handle, "mem_acct_init"))) {
gf_log (xl->name, GF_LOG_DEBUG,
"dlsym(mem_acct_init) on %s -- neglecting",
dlerror ());
}
if (!(xl->reconfigure = dlsym (handle, "reconfigure"))) {
gf_log ("xlator", GF_LOG_DEBUG,
"dlsym(reconfigure) on %s -- neglecting",
dlerror());
}
vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
if (!vol_opt) {
goto out;
}
if (!(vol_opt->given_opt = dlsym (handle, "options"))) {
dlerror ();
gf_log (xl->name, GF_LOG_DEBUG,
"Strict option validation not enforced -- neglecting");
}
list_add_tail (&vol_opt->list, &xl->volume_options);
fill_defaults (xl);
ret = 0;
out:
if (name)
GF_FREE (name);
return ret;
}
