source: rtems/c/src/exec/libnetworking/lib/getprotoby.c @ ff0f694d

#include <netdb.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

static const struct protoent prototab[] = {
                                        { "ip",    NULL, IPPROTO_IP },
                                        { "icmp",  NULL, IPPROTO_ICMP },
                                        { "tcp",   NULL, IPPROTO_TCP },
                                        { "udp",   NULL, IPPROTO_UDP },
                                        };

/*
 * Dummy version of BSD getprotobyname()
 */
struct protoent *
getprotobyname (const char *name)
{
        int i;

        for (i = 0 ; i < (sizeof prototab / sizeof prototab[0]) ; i++) {
                if (strcmp (name, prototab[i].p_name) == 0)
                        return (struct protoent *) &prototab[i];
        }
        return NULL;
}

/*
 * Dummy version of BSD getprotobynumber()
 */
struct protoent *
getprotobynumber (int proto)
{
        int i;

        for (i = 0 ; i < (sizeof prototab / sizeof prototab[0]) ; i++) {
                if (proto == prototab[i].p_proto)
                        return (struct protoent *) &prototab[i];
        }
        return NULL;
}