Submitted By: Robert Connolly <robert at linuxfromscratch dot org> (ashes)
Date: 2004-11-04
Initial Package Version: 1.5
Upstream Status: Submitted
Origin: None
Description: This uses libarc4random instead of urandom for mktemp.
Do not use the --with-libc configure option with this patch or it will
not work.

Also see:
http://www.linuxfromscratch.org/~robert/libarc4random/

diff -Naur mktemp-1.5.orig/configure mktemp-1.5.arc4random/configure
--- mktemp-1.5.orig/configure	2003-03-24 01:06:43.000000000 +0000
+++ mktemp-1.5.arc4random/configure	2004-11-04 04:53:56.245426328 +0000
@@ -3582,6 +3582,70 @@
 done
 
 
+
+echo "$as_me:$LINENO: checking for arc4random in -larc4random" >&5
+echo $ECHO_N "checking for arc4random in -larc4random... $ECHO_C" >&6
+if test "${ac_cv_lib_arc4random_arc4random+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-larc4random  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char arc4random ();
+int
+main ()
+{
+arc4random ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_arc4random_arc4random=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_arc4random_arc4random=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_arc4random_arc4random" >&5
+echo "${ECHO_T}$ac_cv_lib_arc4random_arc4random" >&6
+if test $ac_cv_lib_arc4random_arc4random = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBARC4RANDOM 1
+_ACEOF
+
+  LIBS="-larc4random $LIBS"
+
+fi
+
 echo "$as_me:$LINENO: checking for __progname" >&5
 echo $ECHO_N "checking for __progname... $ECHO_C" >&6
 if test "${mktemp_cv_progname+set}" = set; then
diff -Naur mktemp-1.5.orig/configure.in mktemp-1.5.arc4random/configure.in
--- mktemp-1.5.orig/configure.in	2003-03-24 01:04:49.000000000 +0000
+++ mktemp-1.5.arc4random/configure.in	2004-11-04 04:53:44.996400152 +0000
@@ -155,6 +155,10 @@
 break])
 AC_REPLACE_FUNCS(strerror strdup)
 dnl
+dnl Check for libarc4random
+dnl
+AC_CHECK_LIB(arc4random, arc4random)
+dnl
 dnl Check for __progname
 dnl
 AC_MSG_CHECKING([for __progname])
--- mktemp-1.5.orig/config.h.in	2003-03-24 01:06:57.000000000 +0000
+++ mktemp-1.5.arc4random/config.h.in	2004-11-04 04:59:30.550862296 +0000
@@ -30,6 +30,9 @@
 /* Define to 1 if you have the `srandomdev' function. */
 #undef HAVE_SRANDOMDEV
 
+/* Define to 1 if you have the `arc4random' function. */
+#undef HAVE_LIBARC4RANDOM
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
--- mktemp-1.5.orig/random.c	2001-10-01 00:21:34.000000000 +0000
+++ mktemp-1.5.arc4random/random.c	2004-11-04 05:02:14.809418200 +0000
@@ -64,6 +64,13 @@
 static const char rcsid[] = "$Id: random.c,v 1.4 2001/10/01 00:21:34 millert Exp $";
 #endif /* not lint */
 
+#ifdef HAVE_LIBARC4RANDOM
+void
+seed_random()
+{
+        arc4random() % 65536;
+}
+#else !HAVE_LIBARC4RANDOM
 #ifdef HAVE_SRANDOMDEV
 void
 seed_random()
@@ -124,6 +131,7 @@
 	SRAND(seed);
 }
 #endif /* !HAVE_SRANDOMDEV */
+#endif /* !HAVE_LIBARC4RANDOM */
 
 long
 get_random()