1 #ifndef MTOOLS_STREAM_H 2 #define MTOOLS_STREAM_H 3 4 /* Copyright 1996-1999,2001,2002,2005,2006,2008,2009,2011 Alain Knaff. 5 * This file is part of mtools. 6 * 7 * Mtools is free software: you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation, either version 3 of the License, or 10 * (at your option) any later version. 11 * 12 * Mtools is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with Mtools. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 typedef struct Stream_t { 22 struct Class_t *Class; 23 int refs; 24 struct Stream_t *Next; 25 struct Stream_t *Buffer; 26 } Stream_t; 27 28 #include "mtools.h" 29 #include "msdos.h" 30 31 #include "llong.h" 32 33 doscp_t *get_dosConvert_pass_through(Stream_t *Stream); 34 35 typedef struct Class_t { 36 int (*read)(Stream_t *, char *, mt_off_t, size_t); 37 int (*write)(Stream_t *, char *, mt_off_t, size_t); 38 int (*flush)(Stream_t *); 39 int (*freeFunc)(Stream_t *); 40 int (*set_geom)(Stream_t *, device_t *, device_t *, int media, 41 union bootsector *); 42 int (*get_data)(Stream_t *, time_t *, mt_size_t *, int *, int *); 43 int (*pre_allocate)(Stream_t *, mt_size_t); 44 45 doscp_t *(*get_dosConvert)(Stream_t *); 46 47 int (*discard)(Stream_t *); 48 } Class_t; 49 50 #define READS(stream, buf, address, size) \ 51 ((stream)->Class->read)( (stream), (char *) (buf), (address), (size) ) 52 53 #define WRITES(stream, buf, address, size) \ 54 ((stream)->Class->write)( (stream), (char *) (buf), (address), (size) ) 55 56 #define SET_GEOM(stream, dev, orig_dev, media, boot) \ 57 (stream)->Class->set_geom( (stream), (dev), (orig_dev), (media), (boot) ) 58 59 #define GET_DATA(stream, date, size, type, address) \ 60 (stream)->Class->get_data( (stream), (date), (size), (type), (address) ) 61 62 #define PRE_ALLOCATE(stream, size) \ 63 (stream)->Class->pre_allocate((stream), (size)) 64 65 #define GET_DOSCONVERT(stream) \ 66 (stream)->Class->get_dosConvert((stream)) 67 68 #define DISCARD(stream) \ 69 (stream)->Class->discard((stream)) 70 71 int flush_stream(Stream_t *Stream); 72 Stream_t *copy_stream(Stream_t *Stream); 73 int free_stream(Stream_t **Stream); 74 75 #define FLUSH(stream) \ 76 flush_stream( (stream) ) 77 78 #define FREE(stream) \ 79 free_stream( (stream) ) 80 81 #define COPY(stream) \ 82 copy_stream( (stream) ) 83 84 85 #define DeclareThis(x) x *This = (x *) Stream 86 87 int force_write(Stream_t *Stream, char *buf, mt_off_t start, size_t len); 88 int force_read(Stream_t *Stream, char *buf, mt_off_t start, size_t len); 89 90 int get_data_pass_through(Stream_t *Stream, time_t *date, mt_size_t *size, 91 int *type, int *address); 92 93 int read_pass_through(Stream_t *Stream, char *buf, mt_off_t start, size_t len); 94 int write_pass_through(Stream_t *Stream, char *buf, mt_off_t start, size_t len); 95 96 mt_off_t sectorsToBytes(Stream_t *This, off_t off); 97 98 mt_size_t getfree(Stream_t *Stream); 99 int getfreeMinBytes(Stream_t *Stream, mt_size_t ref); 100 101 Stream_t *find_device(char drive, int mode, struct device *out_dev, 102 union bootsector *boot, 103 char *name, int *media, mt_size_t *maxSize, 104 int *isRop); 105 106 #endif 107 108