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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 */
enum server_fd_type (*get_file_info)(struct fd *fd, int *flags);
/* queue an async operation */
void (*queue_async)(struct fd *, void* apc, void* user, void* io_sb, int type, int count);
/* cancel an async operation */
void (*cancel_async)(struct fd *);
};
/* file descriptor functions */
extern struct fd *alloc_pseudo_fd( const struct fd_ops *fd_user_ops, struct object *user );
extern struct fd *open_fd( const char *name, int flags, mode_t *mode, unsigned int access,
unsigned int sharing, unsigned int options );
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 void set_fd_user( struct fd *fd, const struct fd_ops *ops, struct object *user );
extern int get_unix_fd( struct fd *fd );
extern int is_same_file_fd( struct fd *fd1, struct fd *fd2 );
extern int is_fd_removable( struct fd *fd );
extern int fd_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
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 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 int default_fd_get_poll_events( struct fd *fd );
extern void default_poll_event( struct fd *fd, int event );
extern void fd_queue_async_timeout( struct fd *fd, void *apc, void *user, void *io_sb, int type,
int count, const struct timeval *timeout );
extern void default_fd_queue_async( struct fd *fd, void *apc, void *user, void *io_sb, int type, int count );
extern void default_fd_cancel_async( struct fd *fd );
extern int no_flush( struct fd *fd, struct event **event );
extern enum server_fd_type no_get_file_info( struct fd *fd, int *flags );
extern void no_queue_async( struct fd *fd, void* apc, void* user, void* io_sb, int type, int count);
extern void no_cancel_async( struct fd *fd );
extern void main_loop(void);
extern void remove_process_locks( struct process *process );
inline static struct fd *get_obj_fd( struct object *obj ) { return obj->ops->get_fd( obj ); }
/* timeout functions */
struct timeout_user;
extern struct timeval current_time;
typedef void (*timeout_callback)( void *private );
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extern struct timeout_user *add_timeout_user( const 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 */
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static inline int time_before( const struct timeval *t1, const 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 struct file *grab_file_unless_removable( struct file *file );
extern int grow_file( struct file *file, file_pos_t size );
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);
extern struct object *create_dir_obj( struct fd *fd );
/* serial port functions */
extern int is_serial_fd( struct fd *fd );
extern struct object *create_serial( struct fd *fd, unsigned int options );
/* async I/O functions */
extern struct async *create_async( struct thread *thread, const struct timeval *timeout,
struct list *queue, void *, void *, void *);
extern void async_terminate_head( struct list *queue, int status );
static inline void async_terminate_queue( struct list *queue, int status )
{
while (!list_empty( queue )) async_terminate_head( queue, status );
}
/* access rights that require Unix read permission */
#define FILE_UNIX_READ_ACCESS (FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA)
/* access rights that require Unix write permission */
#define FILE_UNIX_WRITE_ACCESS (FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA)
#endif /* __WINE_SERVER_FILE_H */