Files
android_bootable_recovery/kernel_module_loader.hpp
bigbiff 22851b9476 module load: attempt to load modules from /vendor
Use TW_LOAD_VENDOR_MODULES := "module1.ko module2.ko modulen.ko"
in BoardConfig to have TWRP attempt to load kernel modules during
startup. For fastboot ramdisks, TWRP will attempt to load from
the ramdisk from /vendor/lib/modules. You can have the build
system copy the modules to
$(TARGET_RECOVERY_ROOT_OUT)/vendor/lib/modules/1.1
Otherwise in recovery in boot mode, TWRP will attempt the following:
check /lib/modules (ramdisk vendor_boot)
check /lib/modules/N.N (ramdisk vendor_boot)
check /lib/modules/N.N-gki (ramdisk vendor_boot)
check /vendor/lib/modules (ramdisk)
check /vendor/lib/modules/1.1 (ramdisk prebuilt modules)
check /vendor/lib/modules/N.N (vendor mounted)
check /vendor/lib/modules/N.N-gki (vendor mounted)

Change-Id: I2dccf199e37d47cb7a7e79b0e11026d67b4e3186
2021-09-29 20:46:19 +00:00

33 lines
1.1 KiB
C++

#ifndef _KERNELMODULELOADER_HPP
#define _KERNELMODULELOADER_HPP
#include <dirent.h>
#include <string>
#include <vector>
#include <android-base/strings.h>
#include <modprobe/modprobe.h>
#include <sys/utsname.h>
#include "twcommon.h"
#include "twrp-functions.hpp"
#define VENDOR_MODULE_DIR "/vendor/lib/modules" // Base path for vendor kernel modules to check by TWRP
#define VENDOR_BOOT_MODULE_DIR "/lib/modules" // vendor_boot ramdisk GKI modules to check by TWRP
typedef enum {
RECOVERY_FASTBOOT_MODE = 0,
RECOVERY_IN_BOOT_MODE,
FASTBOOTD_MODE
} BOOT_MODE;
class KernelModuleLoader
{
public:
static bool Load_Vendor_Modules(BOOT_MODE mode); // Load specific maintainer defined kernel modules in TWRP
private:
static bool Try_And_Load_Modules(std::string module_dir); // Use libmodprobe to attempt loading kernel modules
static bool Write_Module_List(std::string module_dir); // Write list of modules to load from TW_LOAD_VENDOR_MODULES
static bool Copy_Modules_To_Tmpfs(std::string module_dir); // Copy modules to ramdisk for loading
};
#endif // _KERNELMODULELOADER_HPP