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::mmap(offset_t position, offset_t length, offset_t *start_pos, offset_t *end_pos, offset_t *data_end) 28 { 29 /* Set the limits of the paged region. */ 30 31 Pager::mmap(position, length, start_pos, end_pos, data_end); 32 33 /* Obtain the amount of the region that is populated with file data. */ 34 35 *data_end = get_data_size() - _start; 36 37 if (*data_end > _size) 38 *data_end = _size; 39 40 return L4_EOK; 41 } 42 43 long FilePager::map(unsigned long offset, l4_addr_t hot_spot, flags_t flags, l4_snd_fpage_t *region) 44 { 45 return Pager::map(offset, hot_spot, flags, region); 46 } 47 48 // vim: tabstop=4 expandtab shiftwidth=4