/*
 * Copyright 2002-2019 Intel Corporation.
 * 
 * This software is provided to you as Sample Source Code as defined in the accompanying
 * End User License Agreement for the Intel(R) Software Development Products ("Agreement")
 * section 1.L.
 * 
 * This software and the related documents are provided as is, with no express or implied
 * warranties, other than those that are expressly stated in the License.
 */

/*
 * This test verifies that Pin knows the correct size of the signal
 * mask passed to the old-style signal system calls.  These system calls
 * take a 4-byte signal mask, which is shorter than the mask accepted
 * by the modern system calls.
 *
 * Note, we must use syscall() here because libc does not use these
 * old-style system calls any more.
 */

#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <sys/syscall.h>


int main()
{
    char mask1[8];
    char mask2[8];

    memset(mask1, 0, sizeof(mask1));
    memset(mask2, 0, sizeof(mask2));
#ifdef SYS_sigprocmask
    syscall(SYS_sigprocmask, SIG_SETMASK, 0, mask1);
#endif
    if (memcmp(mask1+4, mask2+4, sizeof(mask1)-4) != 0)
    {
        printf("SYS_sigprocmask wrote beyond end of signal mask\n");
        return 1;
    }

    memset(mask1, 0xff, sizeof(mask1));
    memset(mask2, 0xff, sizeof(mask2));
#ifdef SYS_sigprocmask
    syscall(SYS_sigprocmask, SIG_SETMASK, 0, mask1);
#endif
    if (memcmp(mask1+4, mask2+4, sizeof(mask1)-4) != 0)
    {
        printf("SYS_sigprocmask wrote beyond end of signal mask\n");
        return 1;
    }

    return 0;
}