Sweden-Number/server/file.h

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/*
* Server-side file definitions
*
* Copyright (C) 2003 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __WINE_SERVER_FILE_H
#define __WINE_SERVER_FILE_H
#include "object.h"
struct fd;
typedef unsigned __int64 file_pos_t;
/* operations valid on file descriptor objects */
struct fd_ops
{
/* get the events we want to poll() for on this object */
int (*get_poll_events)(struct fd *);
/* a poll() event occurred */
void (*poll_event)(struct fd *,int event);
/* flush the object buffers */
int (*flush)(struct fd *, struct event **);
/* get file information */
int (*get_file_info)(struct fd *,struct get_file_info_reply *, int *flags);
/* queue an async operation - see register_async handler in async.c*/
void (*queue_async)(struct fd *, void* ptr, unsigned int status, int type, int count);
};
/* file descriptor functions */
extern struct fd *alloc_fd( const struct fd_ops *fd_user_ops, struct object *user );
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extern struct fd *open_fd( struct fd *fd, const char *name, int flags, mode_t *mode );
extern struct fd *create_anonymous_fd( const struct fd_ops *fd_user_ops,
int unix_fd, struct object *user );
extern void *get_fd_user( struct fd *fd );
extern int get_unix_fd( struct fd *fd );
extern void fd_poll_event( struct fd *fd, int event );
extern int check_fd_events( struct fd *fd, int events );
extern void set_fd_events( struct fd *fd, int events );
extern obj_handle_t lock_fd( struct fd *fd, file_pos_t offset, file_pos_t count, int shared, int wait );
extern void unlock_fd( struct fd *fd, file_pos_t offset, file_pos_t count );
extern int flush_cached_fd( struct process *process, obj_handle_t handle );
extern int default_fd_add_queue( struct object *obj, struct wait_queue_entry *entry );
extern void default_fd_remove_queue( struct object *obj, struct wait_queue_entry *entry );
extern int default_fd_signaled( struct object *obj, struct thread *thread );
extern void default_poll_event( struct fd *fd, int event );
extern int no_flush( struct fd *fd, struct event **event );
extern int no_get_file_info( struct fd *fd, struct get_file_info_reply *info, int *flags );
extern void no_queue_async( struct fd *fd, void* ptr, unsigned int status, int type, int count );
extern void main_loop(void);
inline static struct fd *get_obj_fd( struct object *obj ) { return obj->ops->get_fd( obj ); }
/* timeout functions */
struct timeout_user;
typedef void (*timeout_callback)( void *private );
extern struct timeout_user *add_timeout_user( struct timeval *when,
timeout_callback func, void *private );
extern void remove_timeout_user( struct timeout_user *user );
extern void add_timeout( struct timeval *when, int timeout );
/* return 1 if t1 is before t2 */
static inline int time_before( struct timeval *t1, struct timeval *t2 )
{
return ((t1->tv_sec < t2->tv_sec) ||
((t1->tv_sec == t2->tv_sec) && (t1->tv_usec < t2->tv_usec)));
}
/* file functions */
extern struct file *get_file_obj( struct process *process, obj_handle_t handle,
unsigned int access );
extern int get_file_unix_fd( struct file *file );
extern int is_same_file( struct file *file1, struct file *file2 );
extern int is_file_removable( struct file *file );
extern int grow_file( struct file *file, int size_high, int size_low );
extern struct file *create_temp_file( int access );
extern void file_set_error(void);
/* change notification functions */
extern void do_change_notify( int unix_fd );
extern void sigio_callback(void);
#endif /* __WINE_SERVER_FILE_H */