Function register_files_sparse [src]

Registers an empty (-1) file table of nr_files number of file descriptors.

Prototype

pub fn register_files_sparse(self: *IoUring, nr_files: u32) !void

Parameters

self: *IoUringnr_files: u32

Source

  pub fn register_files_sparse(self: *IoUring, nr_files: u32) !void {
    assert(self.fd >= 0);

    const reg = &linux.io_uring_rsrc_register{
        .nr = nr_files,
        .flags = linux.IORING_RSRC_REGISTER_SPARSE,
        .resv2 = 0,
        .data = 0,
        .tags = 0,
    };

    const res = linux.io_uring_register(
        self.fd,
        .REGISTER_FILES2,
        @ptrCast(reg),
        @as(u32, @sizeOf(linux.io_uring_rsrc_register)),
    );

    return handle_registration_result(res);
}  