1 /* 2 * File access convenience functions and types. 3 * 4 * Copyright (C) 2021 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #include <l4/sys/types.h> 23 24 #include <systypes/base.h> 25 26 27 28 typedef struct 29 { 30 l4_cap_idx_t ref; 31 char *memory; 32 offset_t start_pos, end_pos, data_end, size; 33 } file_t; 34 35 offset_t file_span(file_t *file); 36 void file_init(file_t *file); 37 long file_open(file_t *file, l4_cap_idx_t context_ref); 38 void file_close(file_t *file); 39 long file_mmap(file_t *file, offset_t position, offset_t length); 40 long context_open(file_t *file, l4_cap_idx_t server); 41 42 // vim: tabstop=2 expandtab shiftwidth=2