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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/java/security/jce/prng/natVMSecureRandomPosix.cc
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diff --git a/libjava/gnu/java/security/jce/prng/natVMSecureRandomPosix.cc b/libjava/gnu/java/security/jce/prng/natVMSecureRandomPosix.cc
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+++ b/libjava/gnu/java/security/jce/prng/natVMSecureRandomPosix.cc
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+// natVMSecureRandomPosix.cc - Native part of VMSecureRandom class for POSIX.
+
+/* Copyright (C) 2009 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <gcj/cni.h>
+#include <java/lang/InternalError.h>
+#include <gnu/java/security/jce/prng/VMSecureRandom.h>
+
+jint
+gnu::java::security::jce::prng::VMSecureRandom::natGenerateSeed(jbyteArray byte_array, jint offset, jint length)
+{
+ int a, fd;
+ jbyte *bytes = elements (byte_array);
+ ssize_t count;
+
+ for (a = 0; a < offset; ++a)
+ bytes++;
+ fd = open ("/dev/random", O_RDONLY);
+
+ if (fd == -1)
+ {
+ jstring oserr = JvNewStringLatin1 (strerror (errno));
+ throw new ::java::lang::InternalError
+ (JvNewStringLatin1 ("Error opening /dev/random: ")->concat(oserr));
+ }
+
+ count = read (fd, bytes, length);
+ close (fd);
+
+ if (count == -1)
+ {
+ jstring oserr = JvNewStringLatin1 (strerror (errno));
+ throw new ::java::lang::InternalError
+ (JvNewStringLatin1 ("Error reading /dev/random: ")->concat(oserr));
+ }
+
+ return count;
+}
+