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Merge pull request #295 from morphis/f/migrate-permissions

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Migrate permissions of /data correctly for existing installations
This commit is contained in:
Simon Fels 2017-05-27 18:19:45 +02:00 • committed by GitHub
commit 9d05d38a9d
1 changed files with 25 additions and 9 deletions
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34
src/anbox/container/lxc_container.cpp
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@ -32,6 +32,9 @@
#include <sys/prctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <unistd.h>
namespace fs = boost::filesystem;
@ -114,18 +117,31 @@ void LxcContainer::setup_network() {
const auto data_ethernet_path = fs::path("data") / "misc" / "ethernet";
const auto ip_conf_dir = SystemConfiguration::instance().data_dir() / data_ethernet_path;
if (!fs::exists(ip_conf_dir)) {
if (!fs::exists(ip_conf_dir))
fs::create_directories(ip_conf_dir);
// We have to walk through the created directory hierachy now and
// ensure the permissions are set correctly. Otherwise the Android
// system will fail to boot as it isn't allowed to write anything
// into these directories.
for (auto iter = data_ethernet_path.begin(); iter != data_ethernet_path.end(); iter++) {
const auto path = SystemConfiguration::instance().data_dir() / *iter;
if (::chown(path.c_str(), unprivileged_user_id, unprivileged_user_id) < 0)
WARNING("Failed to set owner for path '%s'", path);
// We have to walk through the created directory hierachy now and
// ensure the permissions are set correctly. Otherwise the Android
// system will fail to boot as it isn't allowed to write anything
// into these directories. As previous versions of Anbox which were
// published to our users did this incorrectly we need to check on
// every startup if those directories are still owned by root and
// if they are we move them over to the unprivileged user.
auto path = SystemConfiguration::instance().data_dir();
for (auto iter = data_ethernet_path.begin(); iter != data_ethernet_path.end(); iter++) {
path /= *iter;
struct stat st;
if (stat(path.c_str(), &st) < 0) {
WARNING("Cannot retrieve permissions of path %s", path);
continue;
}
if (st.st_uid != 0 && st.st_gid != 0)
continue;
if (::chown(path.c_str(), unprivileged_user_id, unprivileged_user_id) < 0)
WARNING("Failed to set owner for path '%s'", path);
}
const auto ip_conf_path = ip_conf_dir / "ipconfig.txt";