source: rtems/cpukit/libnetworking/rtems/sghostname.c @ e800b07

/*
 * RTEMS versions of hostname functions
 * FIXME: Not thread-safe
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <rtems/rtems_bsdnet.h>
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/kernel.h>

static char *rtems_hostname;

int
gethostname (char *name, size_t namelen)
{
        char *cp = rtems_hostname;

        if (cp == NULL)
                cp = "";
        strncpy (name, cp, namelen);
        return 0;
}

int
sethostname (const char *name, size_t namelen)
{
        char *old, *new;

        if (namelen >= MAXHOSTNAMELEN) {
                errno = EINVAL;
                return -1;
        }
        new = malloc (namelen + 1, M_HTABLE, M_NOWAIT);
        if (new == NULL) {
                errno = ENOMEM;
                return -1;
        }
        strncpy (new, name, namelen);
        new[namelen] = '\0';
        old = rtems_hostname;
        rtems_hostname = new;
        if (old)
                free (old, M_HTABLE);
        return 0;
}