Function free_file_descriptor

libraries/AP_Filesystem/AP_Filesystem_FATFS.cpp:118–146

}

static int free_file_descriptor(int fileno)
{
    FAT_FILE *stream;
    FIL *fh;

    if (isatty_( fileno )) {
        errno = EBADF;
        return -1;
    }

    // checks if fileno out of bounds
    stream = fileno_to_stream(fileno);
    if (stream == nullptr) {
        return -1;
    }

    fh = stream->fh;

    if (fh != NULL) {
        free(fh);
    }

    free(stream->name);
    stream->name = NULL;

    file_table[fileno]  = NULL;
    free(stream);
    return fileno;
}

static FIL *fileno_to_fatfs(int fileno)
{