mirror of https://github.com/vivier/EMILE.git
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/*
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*
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* (c) 2005-2007 Laurent Vivier <Laurent@Vivier.EU>
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*
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*/
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#ifndef __LIBSTREAM_H__
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#define __LIBSTREAM_H__
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#include <sys/types.h>
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#include <unistd.h>
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typedef enum {
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device_FLOPPY,
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device_SCSI,
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} device_t;
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typedef enum {
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fs_EXT2,
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fs_ISO9660,
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fs_CONTAINER,
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fs_BLOCK,
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fs_LAST
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} fs_t;
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#define fs_NONE fs_LAST
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struct stream_stat {
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int st_dev;
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off_t st_size;
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off_t st_base;
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};
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typedef struct device_io_t device_io_t;
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typedef struct filesystem_io_t filesystem_io_t;
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typedef void *stream_FILE;
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typedef void *stream_VOLUME;
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typedef void *stream_DIR;
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;
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typedef int (*stream_read_sector_t)(void *data,off_t offset, void* buffer, size_t size);
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typedef int (*stream_write_sector_t)(void *data,off_t offset, void* buffer, size_t size);
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typedef int (*stream_get_blocksize_t)(void *data);
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typedef stream_VOLUME *(*stream_mount_t)(device_io_t *device);
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typedef int (*stream_init_t)(device_io_t *device, filesystem_io_t *fs);
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typedef stream_FILE *(*stream_open_t)(stream_VOLUME *volume, char *path);
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typedef int (*stream_umount_t)(stream_VOLUME *volume);
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typedef size_t (*stream_read_t)(stream_FILE *file, void *buf, size_t count);
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typedef int (*stream_lseek_t)(stream_FILE *file, long offset, int whence);
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typedef void (*stream_close_t)(stream_FILE *file);
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typedef int (*stream_fstat_t)(stream_FILE *file, struct stream_stat *buf);
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struct device_io_t {
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void *data;
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stream_write_sector_t write_sector;
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stream_read_sector_t read_sector;
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stream_close_t close;
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stream_get_blocksize_t get_blocksize;
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};
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struct filesystem_io_t {
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stream_mount_t mount;
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stream_umount_t umount;
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stream_open_t open;
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stream_read_t read;
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stream_lseek_t lseek;
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stream_close_t close;
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stream_fstat_t fstat;
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};
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typedef struct {
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/* device interface */
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device_io_t device;
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/* filesystem interface */
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filesystem_io_t fs;
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/* info */
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void *volume;
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void *file;
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fs_t fs_id;
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device_t device_id;
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int unit, partition;
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} stream_t;
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extern stream_t *stream_open(char *dev);
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extern int stream_read_sector(stream_t *stream,
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off_t offset, void* buffer, size_t size);
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extern int stream_read(stream_t *stream, void *buf, size_t count);
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extern int stream_lseek(stream_t *stream, long offset, int whence);
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extern int stream_close(stream_t *stream);
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extern int stream_uncompress(stream_t *stream);
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extern int stream_fstat(stream_t *stream, struct stream_stat *buf);
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extern void stream_set_default(int unit);
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#endif /* __LIBSTREAM_H__ */
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