v4.19.13 snapshot.
diff --git a/scripts/selinux/Makefile b/scripts/selinux/Makefile
new file mode 100644
index 0000000..b3048b8
--- /dev/null
+++ b/scripts/selinux/Makefile
@@ -0,0 +1 @@
+subdir-y := mdp genheaders
diff --git a/scripts/selinux/README b/scripts/selinux/README
new file mode 100644
index 0000000..5ba679c
--- /dev/null
+++ b/scripts/selinux/README
@@ -0,0 +1,2 @@
+Please see Documentation/admin-guide/LSM/SELinux.rst for information on
+installing a dummy SELinux policy.
diff --git a/scripts/selinux/genheaders/.gitignore b/scripts/selinux/genheaders/.gitignore
new file mode 100644
index 0000000..4c0b646
--- /dev/null
+++ b/scripts/selinux/genheaders/.gitignore
@@ -0,0 +1 @@
+genheaders
diff --git a/scripts/selinux/genheaders/Makefile b/scripts/selinux/genheaders/Makefile
new file mode 100644
index 0000000..e8c5331
--- /dev/null
+++ b/scripts/selinux/genheaders/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+hostprogs-y := genheaders
+HOST_EXTRACFLAGS += \
+ -I$(srctree)/include/uapi -I$(srctree)/include \
+ -I$(srctree)/security/selinux/include
+
+always := $(hostprogs-y)
diff --git a/scripts/selinux/genheaders/genheaders.c b/scripts/selinux/genheaders/genheaders.c
new file mode 100644
index 0000000..fa48fab
--- /dev/null
+++ b/scripts/selinux/genheaders/genheaders.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* NOTE: we really do want to use the kernel headers here */
+#define __EXPORTED_HEADERS__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <sys/socket.h>
+
+struct security_class_mapping {
+ const char *name;
+ const char *perms[sizeof(unsigned) * 8 + 1];
+};
+
+#include "classmap.h"
+#include "initial_sid_to_string.h"
+
+#define max(x, y) (((int)(x) > (int)(y)) ? x : y)
+
+const char *progname;
+
+static void usage(void)
+{
+ printf("usage: %s flask.h av_permissions.h\n", progname);
+ exit(1);
+}
+
+static char *stoupperx(const char *s)
+{
+ char *s2 = strdup(s);
+ char *p;
+
+ if (!s2) {
+ fprintf(stderr, "%s: out of memory\n", progname);
+ exit(3);
+ }
+
+ for (p = s2; *p; p++)
+ *p = toupper(*p);
+ return s2;
+}
+
+int main(int argc, char *argv[])
+{
+ int i, j, k;
+ int isids_len;
+ FILE *fout;
+ const char *needle = "SOCKET";
+ char *substr;
+
+ progname = argv[0];
+
+ if (argc < 3)
+ usage();
+
+ fout = fopen(argv[1], "w");
+ if (!fout) {
+ fprintf(stderr, "Could not open %s for writing: %s\n",
+ argv[1], strerror(errno));
+ exit(2);
+ }
+
+ for (i = 0; secclass_map[i].name; i++) {
+ struct security_class_mapping *map = &secclass_map[i];
+ map->name = stoupperx(map->name);
+ for (j = 0; map->perms[j]; j++)
+ map->perms[j] = stoupperx(map->perms[j]);
+ }
+
+ isids_len = sizeof(initial_sid_to_string) / sizeof (char *);
+ for (i = 1; i < isids_len; i++)
+ initial_sid_to_string[i] = stoupperx(initial_sid_to_string[i]);
+
+ fprintf(fout, "/* This file is automatically generated. Do not edit. */\n");
+ fprintf(fout, "#ifndef _SELINUX_FLASK_H_\n#define _SELINUX_FLASK_H_\n\n");
+
+ for (i = 0; secclass_map[i].name; i++) {
+ struct security_class_mapping *map = &secclass_map[i];
+ fprintf(fout, "#define SECCLASS_%s", map->name);
+ for (j = 0; j < max(1, 40 - strlen(map->name)); j++)
+ fprintf(fout, " ");
+ fprintf(fout, "%2d\n", i+1);
+ }
+
+ fprintf(fout, "\n");
+
+ for (i = 1; i < isids_len; i++) {
+ const char *s = initial_sid_to_string[i];
+ fprintf(fout, "#define SECINITSID_%s", s);
+ for (j = 0; j < max(1, 40 - strlen(s)); j++)
+ fprintf(fout, " ");
+ fprintf(fout, "%2d\n", i);
+ }
+ fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
+ fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
+ fprintf(fout, "{\n");
+ fprintf(fout, "\tbool sock = false;\n\n");
+ fprintf(fout, "\tswitch (kern_tclass) {\n");
+ for (i = 0; secclass_map[i].name; i++) {
+ struct security_class_mapping *map = &secclass_map[i];
+ substr = strstr(map->name, needle);
+ if (substr && strcmp(substr, needle) == 0)
+ fprintf(fout, "\tcase SECCLASS_%s:\n", map->name);
+ }
+ fprintf(fout, "\t\tsock = true;\n");
+ fprintf(fout, "\t\tbreak;\n");
+ fprintf(fout, "\tdefault:\n");
+ fprintf(fout, "\t\tbreak;\n");
+ fprintf(fout, "\t}\n\n");
+ fprintf(fout, "\treturn sock;\n");
+ fprintf(fout, "}\n");
+
+ fprintf(fout, "\n#endif\n");
+ fclose(fout);
+
+ fout = fopen(argv[2], "w");
+ if (!fout) {
+ fprintf(stderr, "Could not open %s for writing: %s\n",
+ argv[2], strerror(errno));
+ exit(4);
+ }
+
+ fprintf(fout, "/* This file is automatically generated. Do not edit. */\n");
+ fprintf(fout, "#ifndef _SELINUX_AV_PERMISSIONS_H_\n#define _SELINUX_AV_PERMISSIONS_H_\n\n");
+
+ for (i = 0; secclass_map[i].name; i++) {
+ struct security_class_mapping *map = &secclass_map[i];
+ for (j = 0; map->perms[j]; j++) {
+ if (j >= 32) {
+ fprintf(stderr, "Too many permissions to fit into an access vector at (%s, %s).\n",
+ map->name, map->perms[j]);
+ exit(5);
+ }
+ fprintf(fout, "#define %s__%s", map->name,
+ map->perms[j]);
+ for (k = 0; k < max(1, 40 - strlen(map->name) - strlen(map->perms[j])); k++)
+ fprintf(fout, " ");
+ fprintf(fout, "0x%08xU\n", (1<<j));
+ }
+ }
+
+ fprintf(fout, "\n#endif\n");
+ fclose(fout);
+ exit(0);
+}
diff --git a/scripts/selinux/install_policy.sh b/scripts/selinux/install_policy.sh
new file mode 100755
index 0000000..0b86c47
--- /dev/null
+++ b/scripts/selinux/install_policy.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+if [ `id -u` -ne 0 ]; then
+ echo "$0: must be root to install the selinux policy"
+ exit 1
+fi
+SF=`which setfiles`
+if [ $? -eq 1 ]; then
+ if [ -f /sbin/setfiles ]; then
+ SF="/usr/setfiles"
+ else
+ echo "no selinux tools installed: setfiles"
+ exit 1
+ fi
+fi
+
+cd mdp
+
+CP=`which checkpolicy`
+VERS=`$CP -V | awk '{print $1}'`
+
+./mdp policy.conf file_contexts
+$CP -o policy.$VERS policy.conf
+
+mkdir -p /etc/selinux/dummy/policy
+mkdir -p /etc/selinux/dummy/contexts/files
+
+cp file_contexts /etc/selinux/dummy/contexts/files
+cp dbus_contexts /etc/selinux/dummy/contexts
+cp policy.$VERS /etc/selinux/dummy/policy
+FC_FILE=/etc/selinux/dummy/contexts/files/file_contexts
+
+if [ ! -d /etc/selinux ]; then
+ mkdir -p /etc/selinux
+fi
+if [ ! -f /etc/selinux/config ]; then
+ cat > /etc/selinux/config << EOF
+SELINUX=enforcing
+SELINUXTYPE=dummy
+EOF
+else
+ TYPE=`cat /etc/selinux/config | grep "^SELINUXTYPE" | tail -1 | awk -F= '{ print $2 '}`
+ if [ "eq$TYPE" != "eqdummy" ]; then
+ selinuxenabled
+ if [ $? -eq 0 ]; then
+ echo "SELinux already enabled with a non-dummy policy."
+ echo "Exiting. Please install policy by hand if that"
+ echo "is what you REALLY want."
+ exit 1
+ fi
+ mv /etc/selinux/config /etc/selinux/config.mdpbak
+ grep -v "^SELINUXTYPE" /etc/selinux/config.mdpbak >> /etc/selinux/config
+ echo "SELINUXTYPE=dummy" >> /etc/selinux/config
+ fi
+fi
+
+cd /etc/selinux/dummy/contexts/files
+$SF file_contexts /
+
+mounts=`cat /proc/$$/mounts | egrep "ext2|ext3|xfs|jfs|ext4|ext4dev|gfs2" | awk '{ print $2 '}`
+$SF file_contexts $mounts
+
+
+dodev=`cat /proc/$$/mounts | grep "/dev "`
+if [ "eq$dodev" != "eq" ]; then
+ mount --move /dev /mnt
+ $SF file_contexts /dev
+ mount --move /mnt /dev
+fi
diff --git a/scripts/selinux/mdp/.gitignore b/scripts/selinux/mdp/.gitignore
new file mode 100644
index 0000000..654546d
--- /dev/null
+++ b/scripts/selinux/mdp/.gitignore
@@ -0,0 +1,2 @@
+# Generated file
+mdp
diff --git a/scripts/selinux/mdp/Makefile b/scripts/selinux/mdp/Makefile
new file mode 100644
index 0000000..e9c92db
--- /dev/null
+++ b/scripts/selinux/mdp/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+hostprogs-y := mdp
+HOST_EXTRACFLAGS += \
+ -I$(srctree)/include/uapi -I$(srctree)/include \
+ -I$(srctree)/security/selinux/include
+
+always := $(hostprogs-y)
+clean-files := policy.* file_contexts
diff --git a/scripts/selinux/mdp/dbus_contexts b/scripts/selinux/mdp/dbus_contexts
new file mode 100644
index 0000000..116e684
--- /dev/null
+++ b/scripts/selinux/mdp/dbus_contexts
@@ -0,0 +1,6 @@
+<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+<busconfig>
+ <selinux>
+ </selinux>
+</busconfig>
diff --git a/scripts/selinux/mdp/mdp.c b/scripts/selinux/mdp/mdp.c
new file mode 100644
index 0000000..073fe75
--- /dev/null
+++ b/scripts/selinux/mdp/mdp.c
@@ -0,0 +1,152 @@
+/*
+ *
+ * mdp - make dummy policy
+ *
+ * When pointed at a kernel tree, builds a dummy policy for that kernel
+ * with exactly one type with full rights to itself.
+ *
+ * This program 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.
+ *
+ * This program 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.
+ *
+ * Copyright (C) IBM Corporation, 2006
+ *
+ * Authors: Serge E. Hallyn <serue@us.ibm.com>
+ */
+
+
+/* NOTE: we really do want to use the kernel headers here */
+#define __EXPORTED_HEADERS__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/socket.h>
+
+static void usage(char *name)
+{
+ printf("usage: %s [-m] policy_file context_file\n", name);
+ exit(1);
+}
+
+/* Class/perm mapping support */
+struct security_class_mapping {
+ const char *name;
+ const char *perms[sizeof(unsigned) * 8 + 1];
+};
+
+#include "classmap.h"
+#include "initial_sid_to_string.h"
+
+int main(int argc, char *argv[])
+{
+ int i, j, mls = 0;
+ int initial_sid_to_string_len;
+ char **arg, *polout, *ctxout;
+
+ FILE *fout;
+
+ if (argc < 3)
+ usage(argv[0]);
+ arg = argv+1;
+ if (argc==4 && strcmp(argv[1], "-m") == 0) {
+ mls = 1;
+ arg++;
+ }
+ polout = *arg++;
+ ctxout = *arg;
+
+ fout = fopen(polout, "w");
+ if (!fout) {
+ printf("Could not open %s for writing\n", polout);
+ usage(argv[0]);
+ }
+
+ /* print out the classes */
+ for (i = 0; secclass_map[i].name; i++)
+ fprintf(fout, "class %s\n", secclass_map[i].name);
+ fprintf(fout, "\n");
+
+ initial_sid_to_string_len = sizeof(initial_sid_to_string) / sizeof (char *);
+ /* print out the sids */
+ for (i = 1; i < initial_sid_to_string_len; i++)
+ fprintf(fout, "sid %s\n", initial_sid_to_string[i]);
+ fprintf(fout, "\n");
+
+ /* print out the class permissions */
+ for (i = 0; secclass_map[i].name; i++) {
+ struct security_class_mapping *map = &secclass_map[i];
+ fprintf(fout, "class %s\n", map->name);
+ fprintf(fout, "{\n");
+ for (j = 0; map->perms[j]; j++)
+ fprintf(fout, "\t%s\n", map->perms[j]);
+ fprintf(fout, "}\n\n");
+ }
+ fprintf(fout, "\n");
+
+ /* NOW PRINT OUT MLS STUFF */
+ if (mls) {
+ printf("MLS not yet implemented\n");
+ exit(1);
+ }
+
+ /* types, roles, and allows */
+ fprintf(fout, "type base_t;\n");
+ fprintf(fout, "role base_r;\n");
+ fprintf(fout, "role base_r types { base_t };\n");
+ for (i = 0; secclass_map[i].name; i++)
+ fprintf(fout, "allow base_t base_t:%s *;\n",
+ secclass_map[i].name);
+ fprintf(fout, "user user_u roles { base_r };\n");
+ fprintf(fout, "\n");
+
+ /* default sids */
+ for (i = 1; i < initial_sid_to_string_len; i++)
+ fprintf(fout, "sid %s user_u:base_r:base_t\n", initial_sid_to_string[i]);
+ fprintf(fout, "\n");
+
+ fprintf(fout, "fs_use_xattr ext2 user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr ext3 user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr ext4 user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr jfs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr xfs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr reiserfs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr jffs2 user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_xattr gfs2 user_u:base_r:base_t;\n");
+
+ fprintf(fout, "fs_use_task eventpollfs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_task pipefs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_task sockfs user_u:base_r:base_t;\n");
+
+ fprintf(fout, "fs_use_trans mqueue user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_trans devpts user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_trans hugetlbfs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_trans tmpfs user_u:base_r:base_t;\n");
+ fprintf(fout, "fs_use_trans shm user_u:base_r:base_t;\n");
+
+ fprintf(fout, "genfscon proc / user_u:base_r:base_t\n");
+
+ fclose(fout);
+
+ fout = fopen(ctxout, "w");
+ if (!fout) {
+ printf("Wrote policy, but cannot open %s for writing\n", ctxout);
+ usage(argv[0]);
+ }
+ fprintf(fout, "/ user_u:base_r:base_t\n");
+ fprintf(fout, "/.* user_u:base_r:base_t\n");
+ fclose(fout);
+
+ return 0;
+}