graphene/LibOS/shim/test/regression/getsockopt.c

/* Unit test for issue #92.
 * Example for use of getsockopt with SO_TYPE
 * taken from here: http://alas.matf.bg.ac.rs/manuals/lspe/snode=103.html
 */
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>

int main(int argc, char** argv) {
    int z;
    int s       = -1; /* Socket */
    int so_type = -1; /* Socket type */
    socklen_t optlen; /* Option length */
    int rv = 0;

    /*
     * Create a TCP/IP socket to use:
     */
    s = socket(PF_INET, SOCK_STREAM, 0);
    if (s == -1) {
        printf("socket(2) error %d", errno);
        exit(-1);
    }

    /*
     * Get socket option SO_SNDBUF:
     */
    optlen = sizeof so_type;
    z      = getsockopt(s, SOL_SOCKET, SO_TYPE, &so_type, &optlen);
    if (z) {
        printf("getsockopt(s,SOL_SOCKET,SO_TYPE) %d", errno);
        exit(-1);
    }

    assert(optlen == sizeof so_type);
    if (so_type == SOCK_STREAM) {
        printf("getsockopt: Got socket type OK\n");
    } else {
        printf("getsockopt: Got socket type failed\n");
        rv = -1;
    }

    return rv;
}