示例#1
0
static void
pcmk_panic_local(void) 
{
    int rc = pcmk_ok;
    uid_t uid = geteuid();
    pid_t ppid = getppid();

    if(uid != 0 && ppid > 1) {
        /* We're a non-root pacemaker daemon (cib, crmd, pengine,
         * attrd, etc) with the original pacemakerd parent
         *
         * Of these, only crmd is likely to be initiating resets
         */
        do_crm_log_always(LOG_EMERG, "Signaling parent %d to panic", ppid);
        crm_exit(pcmk_err_panic);
        return;

    } else if (uid != 0) {
        /*
         * No permissions and no pacemakerd parent to escalate to
         * Track down the new pacakerd process and send a signal instead
         */
        union sigval signal_value;

        memset(&signal_value, 0, sizeof(signal_value));
        ppid = crm_procfs_pid_of("pacemakerd");
        do_crm_log_always(LOG_EMERG, "Signaling pacemakerd(%d) to panic", ppid);

        if(ppid > 1 && sigqueue(ppid, SIGQUIT, signal_value) < 0) {
            crm_perror(LOG_EMERG, "Cannot signal pacemakerd(%d) to panic", ppid);
        }
        /* The best we can do now is die */
        crm_exit(pcmk_err_panic);
        return;
    }

    /* We're either pacemakerd, or a pacemaker daemon running as root */

    if (safe_str_eq("crash", getenv("PCMK_panic_action"))) {
        sysrq_trigger('c');
    } else {
        sysrq_trigger('b');
    }
    /* reboot(RB_HALT_SYSTEM); rc = errno; */
    reboot(RB_AUTOBOOT);
    rc = errno;

    do_crm_log_always(LOG_EMERG, "Reboot failed, escalating to %d: %s (%d)", ppid, pcmk_strerror(rc), rc);

    if(ppid > 1) {
        /* child daemon */
        exit(pcmk_err_panic);
    } else {
        /* pacemakerd or orphan child */
        exit(DAEMON_RESPAWN_STOP);
    }
}
示例#2
0
pid_t
pcmk_locate_sbd(void)
{
    char *pidfile = NULL;
    char *sbd_path = NULL;

    if(sbd_pid > 1) {
        return sbd_pid;
    }

    /* Look for the pid file */
    pidfile = crm_strdup_printf("%s/sbd.pid", HA_STATE_DIR);
    sbd_path = crm_strdup_printf("%s/sbd", SBIN_DIR);

    /* Read the pid file */
    CRM_ASSERT(pidfile);

    sbd_pid = crm_pidfile_inuse(pidfile, 0, sbd_path);
    if(sbd_pid > 0) {
        crm_trace("SBD detected at pid=%d (file)", sbd_pid);

    } else {
        /* Fall back to /proc for systems that support it */
        sbd_pid = crm_procfs_pid_of("sbd");
        crm_trace("SBD detected at pid=%d (proc)", sbd_pid);
    }

    if(sbd_pid < 0) {
        sbd_pid = 0;
        crm_trace("SBD not detected");
    }

    free(pidfile);
    free(sbd_path);

    return sbd_pid;
}
示例#3
0
文件: throttle.c 项目: krig/pacemaker
/*!
 * \internal
 * \brief Return name of /proc file containing the CIB deamon's load statistics
 *
 * \return Newly allocated memory with file name on success, NULL otherwise
 *
 * \note It is the caller's responsibility to free the return value.
 *       This will return NULL if the daemon is being run via valgrind.
 *       This should be called only on Linux systems.
 */
static char *find_cib_loadfile(void) 
{
    int pid = crm_procfs_pid_of("cib");

    return pid? crm_strdup_printf("/proc/%d/stat", pid) : NULL;
}