Listing dir contents with raw fs calls

main.c

#include <stdio.h>
#include <switch.h>

int main(int argc, char **argv) {
    consoleInit(NULL);

    FsFileSystem sd_fs;
    Result rc = fsOpenSdCardFileSystem(&sd_fs);
    if (R_FAILED(rc))
        printf("Failed to open sd filesystem: %#x", rc);

    if (R_SUCCEEDED(rc)) {
        s64 free = 0;
        rc = fsFsGetFreeSpace(&sd_fs, "/", &free);
        if (R_SUCCEEDED(rc))
            printf("Free space: %ld\n", free);
        else
            printf("Failed to get free space info: %#x\n", rc);
    }

    if (R_SUCCEEDED(rc)) {
        s64 total = 0;
        rc = fsFsGetTotalSpace(&sd_fs, "/", &total);
        if (R_SUCCEEDED(rc))
            printf("Total space: %ld\n", total);
        else
            printf("Failed to get total space info: %#x\n", rc);
    }

    FsDir dir;
    if (R_SUCCEEDED(rc)) {
        rc = fsFsOpenDirectory(&sd_fs, "/", FsDirOpenMode_ReadDirs | FsDirOpenMode_ReadFiles, &dir);
        if (R_FAILED(rc))
            printf("Failed to open directory: %#x\n", rc);
    }

    s64 count;
    if (R_SUCCEEDED(rc)) {
        rc = fsDirGetEntryCount(&dir, &count);
        if (R_SUCCEEDED(rc))
            printf("Entry count: %ld\n", count);
        else
            printf("Failed to get entry count: %#x\n", rc);
    }

    FsDirectoryEntry entries[count];
    if (R_SUCCEEDED(rc)) {
        s64 total_entries;
        rc = fsDirRead(&dir, &total_entries, count, entries);
        if (R_SUCCEEDED(rc))
            for (s64 i = 0; i < total_entries; ++i)
                printf("%s: %d, %#lx\n", entries[i].name, entries[i].type, entries[i].file_size);
        else
            printf("Failed to read dir: %#x\n", rc);
    }

    fsDirClose(&dir);
    fsFsClose(&sd_fs);

    while (appletMainLoop()) {
        hidScanInput();
        if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_PLUS)
            break;
        consoleUpdate(NULL);
    }

    consoleExit(NULL);
    return 0;
}