paul@8 | 1 | #include "file_pager.h" |
paul@10 | 2 | #include "mapped_file_object_server.h" |
paul@8 | 3 | |
paul@8 | 4 | /* Initialise a pager for a file with a unique file identifier and shared page |
paul@8 | 5 | mapper for moderating access to loaded pages. */ |
paul@8 | 6 | |
paul@51 | 7 | FilePager::FilePager(fileid_t fileid, PageMapper *mapper, flags_t flags) |
paul@48 | 8 | : Pager(mapper, flags), fileid(fileid) |
paul@8 | 9 | { |
paul@8 | 10 | } |
paul@8 | 11 | |
paul@10 | 12 | int FilePager::expected_items() |
paul@10 | 13 | { |
paul@10 | 14 | return MappedFileObject_expected_items; |
paul@10 | 15 | } |
paul@10 | 16 | |
paul@10 | 17 | ipc_server_handler_type FilePager::handler() |
paul@10 | 18 | { |
paul@10 | 19 | return (ipc_server_handler_type) handle_MappedFileObject; |
paul@10 | 20 | } |
paul@10 | 21 | |
paul@53 | 22 | long FilePager::flush(offset_t populated_size, offset_t *size) |
paul@53 | 23 | { |
paul@53 | 24 | return Pager::flush(populated_size, size); |
paul@53 | 25 | } |
paul@53 | 26 | |
paul@55 | 27 | long FilePager::resize(offset_t *size) |
paul@55 | 28 | { |
paul@55 | 29 | return Pager::resize(size); |
paul@55 | 30 | } |
paul@55 | 31 | |
paul@30 | 32 | long FilePager::mmap(offset_t position, offset_t length, offset_t *start_pos, offset_t *end_pos, offset_t *data_end) |
paul@8 | 33 | { |
paul@8 | 34 | /* Set the limits of the paged region. */ |
paul@8 | 35 | |
paul@8 | 36 | Pager::mmap(position, length, start_pos, end_pos, data_end); |
paul@8 | 37 | |
paul@8 | 38 | /* Obtain the amount of the region that is populated with file data. */ |
paul@8 | 39 | |
paul@8 | 40 | *data_end = get_data_size() - _start; |
paul@8 | 41 | |
paul@8 | 42 | if (*data_end > _size) |
paul@8 | 43 | *data_end = _size; |
paul@8 | 44 | |
paul@8 | 45 | return L4_EOK; |
paul@8 | 46 | } |
paul@8 | 47 | |
paul@51 | 48 | long FilePager::map(unsigned long offset, l4_addr_t hot_spot, flags_t flags, l4_snd_fpage_t *region) |
paul@16 | 49 | { |
paul@16 | 50 | return Pager::map(offset, hot_spot, flags, region); |
paul@16 | 51 | } |
paul@16 | 52 | |
paul@8 | 53 | // vim: tabstop=4 expandtab shiftwidth=4 |