# include <config.h>
#endif
+#include <stdlib.h>
#include <sys/types.h>
#include <errno.h>
#endif
#include "error.h"
+#include "exit.h"
#include "xalloc.h"
#ifndef ENAMETOOLONG
# define ENAMETOOLONG 9999
#endif
-#ifndef EXIT_FAILURE
-# define EXIT_FAILURE 1
-#endif
-
int gethostname ();
#ifndef INITIAL_HOSTNAME_LENGTH
# define INITIAL_HOSTNAME_LENGTH 34
#endif
+/* Return the current hostname in malloc'd storage.
+ If malloc fails, exit.
+ Upon any other failure, return NULL. */
char *
-xgethostname ()
+xgethostname (void)
{
char *hostname;
size_t size;
if (err >= 0 && hostname[k] == '\0')
break;
else if (err < 0 && errno != ENAMETOOLONG && errno != 0)
- error (EXIT_FAILURE, errno, "gethostname");
+ {
+ int saved_errno = errno;
+ free (hostname);
+ errno = saved_errno;
+ return NULL;
+ }
size *= 2;
hostname = xrealloc (hostname, size + 1);
}