static int
ldbm_instance_config_readonly_set(void *arg, void *value, char *errorbuf, int phase, int apply)
{
ldbm_instance *inst = (ldbm_instance *)arg;
uintptr_t pval = (uintptr_t)value;
if (!apply) {
return LDAP_SUCCESS;
}
if (CONFIG_PHASE_RUNNING == phase) {
/* if the instance is busy, we'll save the user's readonly settings
* but won't change them until the instance is un-busy again.
*/
if (! (inst->inst_flags & INST_FLAG_BUSY)) {
slapi_mtn_be_set_readonly(inst->inst_be, (int)pval);
}
if ((int)pval) {
inst->inst_flags |= INST_FLAG_READONLY;
} else {
inst->inst_flags &= ~INST_FLAG_READONLY;
}
} else {
slapi_be_set_readonly(inst->inst_be, (int)pval);
}
return LDAP_SUCCESS;
}
int instance_set_busy_and_readonly(ldbm_instance *inst)
{
PR_Lock(inst->inst_config_mutex);
if (inst->inst_flags & INST_FLAG_BUSY) {
PR_Unlock(inst->inst_config_mutex);
return -1;
}
inst->inst_flags |= INST_FLAG_BUSY;
/* save old readonly state */
if (slapi_be_get_readonly(inst->inst_be)) {
inst->inst_flags |= INST_FLAG_READONLY;
} else {
inst->inst_flags &= ~INST_FLAG_READONLY;
}
/*
* Normally, acquire rlock on be_lock, then lock inst_config_mutex.
* instance_set_busy_and_readonly should release inst_config_mutex
* before acquiring wlock on be_lock in slapi_mtn_be_set_readonly.
*/
PR_Unlock(inst->inst_config_mutex);
slapi_mtn_be_set_readonly(inst->inst_be, 1);
return 0;
}
/* mark a backend instance to be not "busy" anymore */
void instance_set_not_busy(ldbm_instance *inst)
{
int readonly;
PR_Lock(inst->inst_config_mutex);
inst->inst_flags &= ~INST_FLAG_BUSY;
/* set backend readonly flag to match instance flags again
* (sometimes the instance changes the readonly status when it's busy)
*/
readonly = (inst->inst_flags & INST_FLAG_READONLY ? 1 : 0);
slapi_mtn_be_set_readonly(inst->inst_be, readonly);
PR_Unlock(inst->inst_config_mutex);
}
