Bart Van Assche 8e84bb3784 Added a comment that explains the purpose of the sigqueue.c test program.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@10915
2009-10-28 10:13:03 +00:00

33 lines
777 B
C

/* Test program that invokes the Linux system call rt_sigqueueinfo(). */
#include <signal.h>
#include <string.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <syscall.h>
#include <unistd.h>
int main()
{
siginfo_t *si;
const size_t sz = sizeof(*si);
fprintf(stderr, "sizeof(*si) = %zu\n", sz);
fprintf(stderr, "%zd %zd %zd %zd\n",
offsetof(siginfo_t, si_signo),
offsetof(siginfo_t, si_errno),
offsetof(siginfo_t, si_code),
offsetof(siginfo_t, _sifields)
);
si = calloc(1, sz);
si->si_signo = SIGWINCH;
si->si_code = SI_QUEUE;
si->si_pid = getpid();
si->si_uid = getuid();
syscall(__NR_rt_sigqueueinfo, getpid(), SIGWINCH, si);
free(si);
fprintf(stderr, "Done.\n");
return 0;
}