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#include <stdlib.h>
#include <unistd.h>
#include <signal.h>

#include <ecp/core.h>
#include <ecp/dir/dir.h>

#include "server.h"
#include "acl.h"
#include "sig.h"

static pthread_t sig_handler_thd;
static sigset_t sig_set;

static void * _sig_handler(void *arg) {
    sigset_t *set = arg;
    int rv, sig;

    while (1) {
        rv = sigwait(set, &sig);
        if (rv) {
            LOG(LOG_ERR, "sig_handler: sigwait err:%d\n", rv);
            continue;
        }
        switch (sig) {
            case SIGUSR1: {
                rv = acl_load();
                if (rv) {
                    LOG(LOG_ERR, "sig_handler: acl load err:%d\n", rv);
                    continue;
                }
                LOG(LOG_DEBUG, "sig_handler: acl reloaded\n");
                break;
            }
        }
    }

    return NULL;
}

int sig_start_handler(void) {
    int rv;

    rv = pthread_create(&sig_handler_thd, NULL, &_sig_handler, (void *)&sig_set);
    if (rv) return ECP_ERR;
    return ECP_OK;

}

int sig_init(void) {
    int rv;

    sigemptyset(&sig_set);
    sigaddset(&sig_set, SIGUSR1);

    rv = pthread_sigmask(SIG_BLOCK, &sig_set, NULL);
    if (rv) return ECP_ERR;

    return ECP_OK;
}