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/*
* test_procps -- program to create a process to test procps
*
* Copyright 2015 Craig Small <csmall@dropbear.xyz>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#ifdef __linux__
#include <sys/prctl.h>
#endif
#include "c.h"
#define DEFAULT_SLEEPTIME 300
#define MY_NAME "spcorp"
static void usage(void)
{
fprintf(stderr, " %s [options]\n", program_invocation_short_name);
fprintf(stderr, " -s <seconds>\n");
exit(EXIT_FAILURE);
}
void
signal_handler(int signum, siginfo_t *siginfo, void *ucontext)
{
char *signame = NULL;
switch(signum) {
case SIGUSR1:
signame = strdup("SIGUSR1");
break;
case SIGUSR2:
signame = strdup("SIGUSR2");
break;
default:
printf("SIG unknown\n");
exit(EXIT_FAILURE);
}
if (signame == NULL) {
printf("SIG malloc error\n");
exit(EXIT_FAILURE);
}
switch (siginfo->si_code) {
case SI_USER:
printf("SIG %s\n", signame);
break;
case SI_QUEUE:
#ifdef HAVE_SIGINFO_T_SI_INT
printf("SIG %s value=%d\n", signame, siginfo->si_int);
#else
printf("case SI_QUEUE: SIG %s siginfo->si_int undefined\n", signame);
#endif
break;
default:
printf("Unknown si_code %d\n", siginfo->si_code);
exit(EXIT_FAILURE);
}
free(signame);
}
int main(int argc, char *argv[])
{
int sleep_time, opt;
struct sigaction signal_action;
sleep_time = DEFAULT_SLEEPTIME;
while ((opt = getopt(argc, argv, "s:")) != -1) {
switch(opt) {
case 's':
sleep_time = atoi(optarg);
if (sleep_time < 1) {
fprintf(stderr, "sleep time must be 1 second or more\n");
usage();
}
break;
default:
usage();
}
}
/* Setup signal handling */
signal_action.sa_sigaction = signal_handler;
sigemptyset (&signal_action.sa_mask);
signal_action.sa_flags = SA_SIGINFO;
sigaction(SIGUSR1, &signal_action, NULL);
sigaction(SIGUSR2, &signal_action, NULL);
#ifdef __linux__
/* set process name */
prctl(PR_SET_NAME, MY_NAME, NULL, NULL, NULL);
#endif
while (sleep_time > 0) {
sleep_time = sleep(sleep_time);
}
return EXIT_SUCCESS;
}
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