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-rw-r--r--src/genhostid.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/src/genhostid.c b/src/genhostid.c
new file mode 100644
index 00000000..a56cad83
--- /dev/null
+++ b/src/genhostid.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2003 Red Hat, Inc.
+ *
+ * This software may be freely redistributed under the terms of the GNU
+ * public license.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/stat.h>
+int
+main (void)
+{
+ struct stat st;
+ long int n;
+ if (stat ("/etc/hostid", &st) == 0 && S_ISREG (st.st_mode)
+ && st.st_size >= sizeof (n))
+ return 0;
+ int fd = open ("/dev/random", O_RDONLY);
+ if (fd == -1 || read (fd, &n, sizeof (n)) != sizeof (n))
+ {
+ srand48 ((long int) time (NULL) ^ (long int) getpid ());
+ n = lrand48 ();
+ }
+ return sethostid (n);
+}