1#include "swap.h"
 2#include "common/debug.h"
 3
 4#include <OS.h>
 5#include <driver_settings.h>
 6
 7const char* ffDetectSwap(FFlist* result) {
 8    system_info info;
 9    status_t status = get_system_info(&info);
10    if (status != B_OK) {
11        FF_DEBUG("get_system_info() failed: %d", (int) status);
12        return "Error getting system info";
13    }
14
15    const uint32_t pageSizeShift = instance.state.platform.sysinfo.pageSizeShift;
16    FFSwapResult* swap = FF_LIST_ADD(FFSwapResult, *result);
17    ffStrbufInitStatic(&swap->name, "System");
18    void* kvms = load_driver_settings("virtual_memory"); // /boot/home/config/settings/kernel/drivers/virtual_memory
19    if (kvms) {
20        const char* swapAuto = get_driver_parameter(kvms, "swap_auto", nullptr, nullptr);
21        if (swapAuto) {
22            ffStrbufSetStatic(&swap->name, swapAuto[0] == 'y' ? "Auto" : "Manual");
23        }
24        unload_driver_settings(kvms);
25    }
26    swap->bytesTotal = (uint64_t) info.max_swap_pages << pageSizeShift;
27    swap->bytesUsed = (uint64_t) (info.max_swap_pages - info.free_swap_pages) << pageSizeShift;
28
29    return nullptr;
30}