Revert "Revert "Adding e4crypt support""
Fix build break caused by original change
This reverts commit 84b0bab58fcc7f225e9a17a15c531b0c2fc509c5.
Change-Id: I99fbd7c3d1ed92db1f546033c8493bb71a327924
diff --git a/init/Android.mk b/init/Android.mk
index cb4cb11..dd867cb 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -47,7 +47,7 @@
watchdogd.cpp \
LOCAL_MODULE:= init
-
+LOCAL_C_INCLUDES += system/extras/ext4_utils
LOCAL_FORCE_STATIC_EXECUTABLE := true
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_UNSTRIPPED)
@@ -58,11 +58,14 @@
liblogwrap \
libcutils \
libbase \
+ libext4_utils_static \
+ libutils \
liblog \
libc \
libselinux \
libmincrypt \
- libext4_utils_static
+ libc++_static \
+ libdl
# Create symlinks
LOCAL_POST_INSTALL_CMD := $(hide) mkdir -p $(TARGET_ROOT_OUT)/sbin; \
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 6daea37..9d5b8a8 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -29,6 +29,7 @@
#include <sys/wait.h>
#include <unistd.h>
#include <linux/loop.h>
+#include <ext4_crypt.h>
#include <selinux/selinux.h>
#include <selinux/label.h>
@@ -302,7 +303,7 @@
}
}
- return 0;
+ return e4crypt_set_directory_policy(args[1]);
}
static struct {
@@ -446,6 +447,17 @@
while (1) { pause(); } // never reached
}
+/*
+ * Callback to make a directory from the ext4 code
+ */
+static int do_mount_alls_make_dir(const char* dir)
+{
+ if (make_dir(dir, 0700) && errno != EEXIST) {
+ return -1;
+ }
+
+ return 0;
+}
/*
* This function might request a reboot, in which case it will
@@ -514,6 +526,37 @@
ERROR("fs_mgr_mount_all suggested recovery, so wiping data via recovery.\n");
ret = wipe_data_via_recovery();
/* If reboot worked, there is no return. */
+ } else if (ret == FS_MGR_MNTALL_DEV_DEFAULT_FILE_ENCRYPTED) {
+ // We have to create the key files here. Only init can call make_dir,
+ // and we can't do it from fs_mgr as then fs_mgr would depend on
+ // make_dir creating a circular dependency.
+ fstab = fs_mgr_read_fstab(args[1]);
+ for (int i = 0; i < fstab->num_entries; ++i) {
+ if (fs_mgr_is_file_encrypted(&fstab->recs[i])) {
+ if (e4crypt_create_device_key(fstab->recs[i].mount_point,
+ do_mount_alls_make_dir)) {
+ ERROR("Could not create device key on %s"
+ " - continue unencrypted\n",
+ fstab->recs[i].mount_point);
+ }
+ }
+ }
+ fs_mgr_free_fstab(fstab);
+
+ if (e4crypt_install_keyring()) {
+ return -1;
+ }
+ property_set("ro.crypto.state", "encrypted");
+
+ // Although encrypted, we have device key, so we do not need to
+ // do anything different from the nonencrypted case.
+ action_for_each_trigger("nonencrypted", action_add_queue_tail);
+ } else if (ret == FS_MGR_MNTALL_DEV_NON_DEFAULT_FILE_ENCRYPTED) {
+ if (e4crypt_install_keyring()) {
+ return -1;
+ }
+ property_set("ro.crypto.state", "encrypted");
+ property_set("vold.decrypt", "trigger_restart_min_framework");
} else if (ret > 0) {
ERROR("fs_mgr_mount_all returned unexpected error %d\n", ret);
}
@@ -866,3 +909,12 @@
} else
return -1;
}
+
+int do_installkey(int nargs, char **args)
+{
+ if (nargs == 2) {
+ return e4crypt_install_key(args[1]);
+ }
+
+ return -1;
+}
diff --git a/init/init_parser.cpp b/init/init_parser.cpp
index 294dc19..4e18e20 100644
--- a/init/init_parser.cpp
+++ b/init/init_parser.cpp
@@ -153,6 +153,7 @@
if (!strcmp(s, "fup")) return K_ifup;
if (!strcmp(s, "nsmod")) return K_insmod;
if (!strcmp(s, "mport")) return K_import;
+ if (!strcmp(s, "nstallkey")) return K_installkey;
break;
case 'k':
if (!strcmp(s, "eycodes")) return K_keycodes;
diff --git a/init/keywords.h b/init/keywords.h
index 09f645b..34cb2ad 100644
--- a/init/keywords.h
+++ b/init/keywords.h
@@ -11,6 +11,7 @@
int do_hostname(int nargs, char **args);
int do_ifup(int nargs, char **args);
int do_insmod(int nargs, char **args);
+int do_installkey(int nargs, char **args);
int do_mkdir(int nargs, char **args);
int do_mount_all(int nargs, char **args);
int do_mount(int nargs, char **args);
@@ -61,6 +62,7 @@
KEYWORD(hostname, COMMAND, 1, do_hostname)
KEYWORD(ifup, COMMAND, 1, do_ifup)
KEYWORD(insmod, COMMAND, 1, do_insmod)
+ KEYWORD(installkey, COMMAND, 1, do_installkey)
KEYWORD(import, SECTION, 1, 0)
KEYWORD(keycodes, OPTION, 0, 0)
KEYWORD(mkdir, COMMAND, 1, do_mkdir)