Merge "Update linker configuration when loading apex"

#include <libavb/libavb.h>

#include <libgsi/libgsi.h>

#include <libsnapshot/snapshot.h>

#include <logwrap/logwrap.h>

#include <processgroup/processgroup.h>

#include <processgroup/setup.h>

#include <selinux/android.h>

    return {};

}

static Result<void> UpdateApexLinkerConfig(const std::string& apex_name) {

    // Do not invoke linkerconfig when there's no bin/ in the apex.

    const std::string bin_path = "/apex/" + apex_name + "/bin";

    if (access(bin_path.c_str(), R_OK) != 0) {

        return {};

    }

    const char* linkerconfig_binary = "/apex/com.android.runtime/bin/linkerconfig";

    const char* linkerconfig_target = "/linkerconfig";

    const char* arguments[] = {linkerconfig_binary, "--target", linkerconfig_target, "--apex",

                               apex_name.c_str(),   "--strict"};

    if (logwrap_fork_execvp(arraysize(arguments), arguments, nullptr, false, LOG_KLOG, false,

                            nullptr) != 0) {

        return ErrnoError() << "failed to execute linkerconfig";

    }

    LOG(INFO) << "Generated linker configuration for " << apex_name;

    return {};

}

static Result<void> DoLoadApex(const std::string& apex_name) {

    std::string prop_name = "init.apex." + apex_name;

    // TODO(b/232799709) read .rc files from the apex

    if (auto result = UpdateApexLinkerConfig(apex_name); !result.ok()) {

        return result.error();

    }

    SetProperty(prop_name, "loaded");

    return {};

}