cb5fa94982
While the previous commit checked for a GNU environment so Hurd
compilied ok, this tripped up Cygwin. configure now explicitly tests
for the structure field rather than trying to guess through compilier
flags about what the environment tells us about signals.h
References:
commit d39d9db079
Signed-off-by: Craig Small <csmall@dropbear.xyz>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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* test_procps -- program to create a process to test procps
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*
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* Copyright 2015 Craig Small <csmall@dropbear.xyz>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <signal.h>
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#ifdef __linux__
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#include <sys/prctl.h>
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#endif
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#include "c.h"
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#define DEFAULT_SLEEPTIME 300
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#define MY_NAME "spcorp"
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static void usage(void)
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{
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fprintf(stderr, " %s [options]\n", program_invocation_short_name);
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fprintf(stderr, " -s <seconds>\n");
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exit(EXIT_FAILURE);
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}
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void
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signal_handler(int signum, siginfo_t *siginfo, void *ucontext)
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{
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char *signame = NULL;
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switch(signum) {
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case SIGUSR1:
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signame = strdup("SIGUSR1");
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break;
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case SIGUSR2:
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signame = strdup("SIGUSR2");
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break;
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default:
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printf("SIG unknown\n");
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exit(EXIT_FAILURE);
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}
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if (signame == NULL) {
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printf("SIG malloc error\n");
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exit(EXIT_FAILURE);
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}
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switch (siginfo->si_code) {
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case SI_USER:
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printf("SIG %s\n", signame);
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break;
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case SI_QUEUE:
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#ifdef HAVE_SIGINFO_T_SI_INT
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printf("SIG %s value=%d\n", signame, siginfo->si_int);
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#else
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printf("case SI_QUEUE: SIG %s siginfo->si_int undefined\n", signame);
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#endif
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break;
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default:
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printf("Unknown si_code %d\n", siginfo->si_code);
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exit(EXIT_FAILURE);
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}
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free(signame);
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}
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int main(int argc, char *argv[])
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{
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int sleep_time, opt;
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struct sigaction signal_action;
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sleep_time = DEFAULT_SLEEPTIME;
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while ((opt = getopt(argc, argv, "s:")) != -1) {
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switch(opt) {
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case 's':
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sleep_time = atoi(optarg);
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if (sleep_time < 1) {
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fprintf(stderr, "sleep time must be 1 second or more\n");
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usage();
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}
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break;
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default:
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usage();
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}
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}
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/* Setup signal handling */
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signal_action.sa_sigaction = signal_handler;
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sigemptyset (&signal_action.sa_mask);
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signal_action.sa_flags = SA_SIGINFO;
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sigaction(SIGUSR1, &signal_action, NULL);
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sigaction(SIGUSR2, &signal_action, NULL);
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#ifdef __linux__
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/* set process name */
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prctl(PR_SET_NAME, MY_NAME, NULL, NULL, NULL);
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#endif
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while (sleep_time > 0) {
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sleep_time = sleep(sleep_time);
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}
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return EXIT_SUCCESS;
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}
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