Use sysctl(KERN_ARND) to get n bytes, instead of just 4 at a time

and remove fallback code. If somebody is dumb enough to make the
sysctl fail using systrace, he deserves what he gets. Saves 7 syscalls
on process startup.
looks good miod@ ok deraadt@ tedu@

1 files changed, 2 insertions, 9 deletions

diff --git a/src/lib/libc/crypt/arc4random.c b/src/lib/libc/crypt/arc4random.c
index 843751d09e..1e338f9968 100644
--- a/src/lib/libc/crypt/arc4random.c
+++ b/src/lib/libc/crypt/arc4random.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: arc4random.c,v 1.14 2005/06/06 14:57:59 kjell Exp $   */
+/*      $OpenBSD: arc4random.c,v 1.15 2005/11/30 07:51:02 otto Exp $    */
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -99,14 +99,7 @@ arc4_stir(struct arc4_stream *as)
         mib[1] = KERN_ARND;
 
         len = sizeof(rnd);
-        if (sysctl(mib, 2, rnd, &len, NULL, 0) == -1) {
-                for (i = 0; i < sizeof(rnd) / sizeof(u_int); i ++) {
-                        len = sizeof(u_int);
-                        if (sysctl(mib, 2, &rnd[i * sizeof(u_int)], &len,
-                            NULL, 0) == -1)
-                                break;
-                }
-        }
+        sysctl(mib, 2, rnd, &len, NULL, 0);
 
         arc4_stir_pid = getpid();
         arc4_addrandom(as, rnd, sizeof(rnd));