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