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-rw-r--r--twinstall.cpp33
-rw-r--r--updater/install.c1
-rw-r--r--updater/updater.c36
3 files changed, 65 insertions, 5 deletions
diff --git a/twinstall.cpp b/twinstall.cpp
index 041c78d63..8af709915 100644
--- a/twinstall.cpp
+++ b/twinstall.cpp
@@ -55,13 +55,44 @@ static int Run_Update_Binary(const char *path, ZipArchive *Zip, int* wipe_cache)
ret_val = mzExtractZipEntryToFile(Zip, binary_location, binary_fd);
close(binary_fd);
- mzCloseZipArchive(Zip);
if (!ret_val) {
+ mzCloseZipArchive(Zip);
LOGERR("Could not extract '%s'\n", ASSUMED_UPDATE_BINARY_NAME);
return INSTALL_ERROR;
}
+ // If exists, extract file_contexts from the zip file
+ const ZipEntry* selinx_contexts = mzFindZipEntry(Zip, "file_contexts");
+ if (selinx_contexts == NULL) {
+ mzCloseZipArchive(Zip);
+ LOGINFO("Zip does not contain SELinux file_contexts file in its root.\n");
+ } else {
+ string output_filename = "/file_contexts";
+ LOGINFO("Zip contains SELinux file_contexts file in its root. Extracting to %s\n", output_filename.c_str());
+ // Delete any file_contexts
+ if (TWFunc::Path_Exists(output_filename) && unlink(output_filename.c_str()) != 0) {
+ LOGINFO("Unable to unlink '%s'\n", output_filename.c_str());
+ }
+
+ int file_contexts_fd = creat(output_filename.c_str(), 0644);
+ if (file_contexts_fd < 0) {
+ mzCloseZipArchive(Zip);
+ LOGERR("Could not extract file_contexts to '%s'\n", output_filename.c_str());
+ return INSTALL_ERROR;
+ }
+
+ ret_val = mzExtractZipEntryToFile(Zip, selinx_contexts, file_contexts_fd);
+ close(file_contexts_fd);
+
+ if (!ret_val) {
+ mzCloseZipArchive(Zip);
+ LOGERR("Could not extract '%s'\n", ASSUMED_UPDATE_BINARY_NAME);
+ return INSTALL_ERROR;
+ }
+ }
+ mzCloseZipArchive(Zip);
+
pipe(pipe_fd);
args[0] = Temp_Binary.c_str();
diff --git a/updater/install.c b/updater/install.c
index 305703cd3..d8c6dc249 100644
--- a/updater/install.c
+++ b/updater/install.c
@@ -37,6 +37,7 @@
#include "mtdutils/mtdutils.h"
#include "updater.h"
#include "applypatch/applypatch.h"
+#include "flashutils/flashutils.h"
#ifdef USE_EXT4
#include "make_ext4fs.h"
diff --git a/updater/updater.c b/updater/updater.c
index 58ac27f9e..15d3d412f 100644
--- a/updater/updater.c
+++ b/updater/updater.c
@@ -17,6 +17,7 @@
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
+#include <fcntl.h>
#include "edify/expr.h"
#include "updater.h"
@@ -31,6 +32,8 @@
// Where in the package we expect to find the edify script to execute.
// (Note it's "updateR-script", not the older "update-script".)
#define SCRIPT_NAME "META-INF/com/google/android/updater-script"
+#define SELINUX_CONTEXTS_ZIP "file_contexts"
+#define SELINUX_CONTEXTS_TMP "/tmp/file_contexts"
struct selabel_handle *sehandle;
@@ -87,6 +90,23 @@ int main(int argc, char** argv) {
}
script[script_entry->uncompLen] = '\0';
+ const ZipEntry* file_contexts_entry = mzFindZipEntry(&za, SELINUX_CONTEXTS_ZIP);
+ if (script_entry != NULL) {
+ int file_contexts_fd = creat(SELINUX_CONTEXTS_TMP, 0644);
+ if (file_contexts_fd < 0) {
+ fprintf(stderr, "Could not extract %s to '%s'\n", SELINUX_CONTEXTS_ZIP, SELINUX_CONTEXTS_TMP);
+ return 3;
+ }
+
+ int ret_val = mzExtractZipEntryToFile(&za, file_contexts_entry, file_contexts_fd);
+ close(file_contexts_fd);
+
+ if (!ret_val) {
+ fprintf(stderr, "Could not extract '%s'\n", SELINUX_CONTEXTS_ZIP);
+ return 3;
+ }
+ }
+
// Configure edify's functions.
RegisterBuiltins();
@@ -105,11 +125,19 @@ int main(int argc, char** argv) {
return 6;
}
- struct selinux_opt seopts[] = {
- { SELABEL_OPT_PATH, "/file_contexts" }
- };
+ if (access(SELINUX_CONTEXTS_TMP, R_OK) == 0) {
+ struct selinux_opt seopts[] = {
+ { SELABEL_OPT_PATH, SELINUX_CONTEXTS_TMP }
+ };
- sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
+ sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
+ } else {
+ struct selinux_opt seopts[] = {
+ { SELABEL_OPT_PATH, "/file_contexts" }
+ };
+
+ sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
+ }
if (!sehandle) {
fprintf(stderr, "Warning: No file_contexts\n");