static void signal_force(struct thread *t, int num, int cause)
{
/* If failed to deliver the signal that we're sending now, force it to run
* with the default action. This will usually cause the process being killed.
*/
if (num == cause) {
t->owner->signal_act[num].sa_handler = SIG_DFT;
}
signal_send(t, num, NULL, TRUE);
}
static void producer(rtems_task_argument arg)
{
test_context *ctx = (test_context *) arg;
ctx->producer_processor = rtems_get_current_processor();
rtems_test_assert(ctx->consumer_processor != ctx->producer_processor);
wait_for_state(ctx, SIG_0_READY);
signal_send(ctx, SIG_0_SENT);
check_producer_processor(ctx);
wait_for_state(ctx, SIG_1_READY);
signal_send(ctx, SIG_1_SENT);
check_producer_processor(ctx);
rtems_task_suspend(RTEMS_SELF);
rtems_test_assert(0);
}
static void timer_function(unsigned long par)
{
ushort cpu_share;
if (unlikely(!pid_alive(check_task))) {
del_timer(&check_timer);
printk(KERN_INFO "sendsig: cannot find pid %i. Is the process still active? Timer removed\n", pid);
return;
}
cpu_share = thread_group_cpu_share(check_task);
if (cpu_share >= max_cpu_share) {
count_check++;
printk(KERN_INFO "sendsig: current cpu share over limit of %i (check #%i)\n",
max_cpu_share, count_check);
/* the ratio is: if the process has a cpu share higher than
max_cpu_share for more than max_checks * wait_timeout seconds, then
we'll send the signal sig_to_send to it
*/
if (count_check >= max_checks) {
/*
sending the signal to the process
*/
signal_send(check_task);
/*
remove the timer
*/
del_timer(&check_timer);
printk(KERN_INFO "sendsig: sent signal to process %i, timer removed\n", pid);
return;
}
} else {
/*
if the process is being good, let's reset its counter
*/
count_check = 0;
}
/*
update the timer
*/
mod_timer(&check_timer, jiffies + wait_timeout * HZ);
return;
}
errno_t
sc_kill(thread_t *p, syscall_result_t *r, kill_args_t *args)
{
/* TODO:
* 1) grupy procesow == -pid
* 2) broadcast - pid == 0
* 3) broadcast poza initem - pid == -1
*/
proc_t *dest_proc = NULL;
/* sprawdzamy sygnał */
if ( args->sig < 0 || args->sig > _NSIG ) {
r->result = -1;
return EINVAL;
}
/* szukamy procesu, któremu mamy dostarczyć sygnał */
dest_proc = proc_find(args->pid);
if ( dest_proc == NULL && args->pid != 0 ) {
r->result = -1;
return ESRCH;
}
/* sprawdzamy czy możemy dostarczyć sygnał */
/* ... */
/* sprawdzamy komu dostarczamy sygnał */
/* pojedynczy proces */
if ( args->pid > 0 )
{
signal_send(dest_proc, args->sig);
r->result = 0;
return EOK;
}
/* Uzupelnic wg. TODO */
r->result = -1;
return -ENOSTR;
}
void signal_send_syscall(pid_t pid,int sig) {
proc_t *proc = proc_find(pid);
if (proc!=NULL) {
if (proc->uid==proc_current->uid || proc->gid==proc_current->gid || proc_current->uid==PERM_ROOTUID || proc_current->gid==PERM_ROOTGID) signal_send(proc,sig);
}
}
static void parse_args_post(int argc, char *argv[])
{
optind = 1;
for (;;)
{
char *gostr = "i:I:o:O:p:r:R:s:S:P:wadu:U" \
"L:g:hvVf:";
#ifdef HAVE_GETOPT_LONG
struct option long_opts[] = {
{"input", 1, 0, 'i'},
{"secondary-input", 1, 0, 'I'},
{"output", 1, 0, 'o'},
{"secondary-output", 1, 0, 'O'},
{"policy", 1, 0, 'p'},
{"read-interval", 1, 0, 'r'},
{"rate-interval", 1, 0, 'R'},
{"sleep-interval", 1, 0, 's'},
{"send-signal", 1, 0, 'S'},
{"pidfile", 1, 0, 'P'},
{"wait-for-signal", 0, 0, 'w'},
{"show-all", 0, 0, 'a'},
{"daemon", 0, 0, 'd'},
{"uid", 1, 0, 'u'},
{"use-si", 0, 0, 'U'},
{"lifetime", 1, 0, 'L'},
{"gid", 1, 0, 'g'},
{0, 0, 0, 0},
};
int c = getopt_long(argc, argv, gostr, long_opts, NULL);
#else
int c = getopt(argc, argv, gostr;
#endif
if (c == -1)
break;
switch (c)
{
case 'i':
input_set(optarg);
break;
case 'I':
input_set_secondary(optarg);
break;
case 'o':
output_set(optarg);
break;
case 'O':
output_set_secondary(optarg);
break;
case 'p':
cfg_setstr(cfg, "policy", optarg);
break;
case 'r':
cfg_setfloat(cfg, "read_interval", strtod(optarg, NULL));
break;
case 'R':
cfg_setfloat(cfg, "rate_interval", strtod(optarg, NULL));
break;
case 's':
cfg_setint(cfg, "sleep_time", strtoul(optarg, NULL, 0));
break;
case 'S':
signal_send(optarg);
exit(0);
case 'w':
cfg_setint(cfg, "signal_driven", 1);
break;
case 'P':
cfg_setstr(cfg, "pidfile", optarg);
break;
case 'a':
cfg_setint(cfg, "show_all", 1);
break;
case 'd':
cfg_setbool(cfg, "daemon", cfg_true);
break;
case 'u':
cfg_setstr(cfg, "uid", optarg);
break;
case 'U':
cfg_setbool(cfg, "use_si", cfg_true);
break;
case 'L':
cfg_setint(cfg, "lifetime", strtoul(optarg, NULL, 0));
break;
case 'g':
cfg_setstr(cfg, "gid", optarg);
break;
case 'f':
/* Already handled in pre getopt loop */
break;
default:
quit("Aborting...\n");
break;
}
}
}