Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security

* 'for-linus' of git://selinuxproject.org/~jmorris/linux-security: (32 commits)
  ima: fix invalid memory reference
  ima: free duplicate measurement memory
  security: update security_file_mmap() docs
  selinux: Casting (void *) value returned by kmalloc is useless
  apparmor: fix module parameter handling
  Security: tomoyo: add .gitignore file
  tomoyo: add missing rcu_dereference()
  apparmor: add missing rcu_dereference()
  evm: prevent racing during tfm allocation
  evm: key must be set once during initialization
  mpi/mpi-mpow: NULL dereference on allocation failure
  digsig: build dependency fix
  KEYS: Give key types their own lockdep class for key->sem
  TPM: fix transmit_cmd error logic
  TPM: NSC and TIS drivers X86 dependency fix
  TPM: Export wait_for_stat for other vendor specific drivers
  TPM: Use vendor specific function for status probe
  tpm_tis: add delay after aborting command
  tpm_tis: Check return code from getting timeouts/durations
  tpm: Introduce function to poll for result of self test
  ...

Fix up trivial conflict in lib/Makefile due to addition of CONFIG_MPI
and SIGSIG next to CONFIG_DQL addition.

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/mpi/mpi-gcd.c b/lib/mpi/mpi-gcd.c
new file mode 100644
index 000000000000..13c48aef9c4e
--- /dev/null
+++ b/lib/mpi/mpi-gcd.c
@@ -0,0 +1,59 @@
+/* mpi-gcd.c  -  MPI functions
+ * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "mpi-internal.h"
+
+/****************
+ * Find the greatest common divisor G of A and B.
+ * Return: true if this 1, false in all other cases
+ */
+int mpi_gcd(MPI g, const MPI xa, const MPI xb)
+{
+        MPI a = NULL, b = NULL;
+
+        if (mpi_copy(&a, xa) < 0)
+                goto nomem;
+
+        if (mpi_copy(&b, xb) < 0)
+                goto nomem;
+
+        /* TAOCP Vol II, 4.5.2, Algorithm A */
+        a->sign = 0;
+        b->sign = 0;
+        while (mpi_cmp_ui(b, 0)) {
+                if (mpi_fdiv_r(g, a, b) < 0)    /* g used as temorary variable */
+                        goto nomem;
+                if (mpi_set(a, b) < 0)
+                        goto nomem;
+                if (mpi_set(b, g) < 0)
+                        goto nomem;
+        }
+        if (mpi_set(g, a) < 0)
+                goto nomem;
+
+        mpi_free(a);
+        mpi_free(b);
+        return !mpi_cmp_ui(g, 1);
+
+nomem:
+        mpi_free(a);
+        mpi_free(b);
+        return -ENOMEM;
+}