server/file.h

   1 /*
   2  * Server-side file definitions
   3  *
   4  * Copyright (C) 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __WINE_SERVER_FILE_H
  22 #define __WINE_SERVER_FILE_H
  23
  24 #include "object.h"
  25
  26 struct fd;
  27 struct async_queue;
  28 struct completion;
  29
  30 /* operations valid on file descriptor objects */
  31 struct fd_ops
  32 {
  33     /* get the events we want to poll() for on this object */
  34     int  (*get_poll_events)(struct fd *);
  35     /* a poll() event occurred */
  36     void (*poll_event)(struct fd *,int event);
  37     /* flush the object buffers */
  38     void (*flush)(struct fd *, struct event **);
  39     /* get file information */
  40     enum server_fd_type (*get_fd_type)(struct fd *fd);
  41     /* perform an ioctl on the file */
  42     obj_handle_t (*ioctl)(struct fd *fd, ioctl_code_t code, const async_data_t *async, int blocking,
  43                           const void *data, data_size_t size);
  44     /* queue an async operation */
  45     void (*queue_async)(struct fd *, const async_data_t *data, int type, int count);
  46     /* selected events for async i/o need an update */
  47     void (*reselect_async)( struct fd *, struct async_queue *queue );
  48     /* cancel an async operation */
  49     void (*cancel_async)(struct fd *);
  50 };
  51
  52 /* file descriptor functions */
  53
  54 extern struct fd *alloc_pseudo_fd( const struct fd_ops *fd_user_ops, struct object *user,
  55                                    unsigned int options );
  56 extern void set_no_fd_status( struct fd *fd, unsigned int status );
  57 extern struct fd *open_fd( const char *name, int flags, mode_t *mode, unsigned int access,
  58                            unsigned int sharing, unsigned int options );
  59 extern struct fd *create_anonymous_fd( const struct fd_ops *fd_user_ops,
  60                                        int unix_fd, struct object *user, unsigned int options );
  61 extern void *get_fd_user( struct fd *fd );
  62 extern void set_fd_user( struct fd *fd, const struct fd_ops *ops, struct object *user );
  63 extern unsigned int get_fd_options( struct fd *fd );
  64 extern int get_unix_fd( struct fd *fd );
  65 extern int is_same_file_fd( struct fd *fd1, struct fd *fd2 );
  66 extern int is_fd_removable( struct fd *fd );
  67 extern int fd_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
  68 extern int check_fd_events( struct fd *fd, int events );
  69 extern void set_fd_events( struct fd *fd, int events );
  70 extern obj_handle_t lock_fd( struct fd *fd, file_pos_t offset, file_pos_t count, int shared, int wait );
  71 extern void unlock_fd( struct fd *fd, file_pos_t offset, file_pos_t count );
  72 extern void set_fd_signaled( struct fd *fd, int signaled );
  73
  74 extern int default_fd_signaled( struct object *obj, struct thread *thread );
  75 extern unsigned int default_fd_map_access( struct object *obj, unsigned int access );
  76 extern int default_fd_get_poll_events( struct fd *fd );
  77 extern void default_poll_event( struct fd *fd, int event );
  78 extern struct async *fd_queue_async( struct fd *fd, const async_data_t *data, int type );
  79 extern void fd_async_wake_up( struct fd *fd, int type, unsigned int status );
  80 extern void fd_reselect_async( struct fd *fd, struct async_queue *queue );
  81 extern obj_handle_t default_fd_ioctl( struct fd *fd, ioctl_code_t code, const async_data_t *async,
  82                                       int blocking, const void *data, data_size_t size );
  83 extern void default_fd_queue_async( struct fd *fd, const async_data_t *data, int type, int count );
  84 extern void default_fd_reselect_async( struct fd *fd, struct async_queue *queue );
  85 extern void default_fd_cancel_async( struct fd *fd );
  86 extern void no_flush( struct fd *fd, struct event **event );
  87 extern void main_loop(void);
  88 extern void remove_process_locks( struct process *process );
  89
  90 static inline struct fd *get_obj_fd( struct object *obj ) { return obj->ops->get_fd( obj ); }
  91
  92 /* timeout functions */
  93
  94 struct timeout_user;
  95 extern timeout_t current_time;
  96
  97 #define TICKS_PER_SEC 10000000
  98
  99 typedef void (*timeout_callback)( void *private );
 100
 101 extern struct timeout_user *add_timeout_user( timeout_t when, timeout_callback func, void *private );
 102 extern void remove_timeout_user( struct timeout_user *user );
 103 extern const char *get_timeout_str( timeout_t timeout );
 104
 105 /* file functions */
 106
 107 extern struct file *get_file_obj( struct process *process, obj_handle_t handle,
 108                                   unsigned int access );
 109 extern int get_file_unix_fd( struct file *file );
 110 extern int is_same_file( struct file *file1, struct file *file2 );
 111 extern struct file *grab_file_unless_removable( struct file *file );
 112 extern int grow_file( struct file *file, file_pos_t size );
 113 extern struct file *create_temp_file( int access );
 114 extern void file_set_error(void);
 115 extern struct security_descriptor *mode_to_sd( mode_t mode, const SID *user, const SID *group );
 116 extern mode_t sd_to_mode( const struct security_descriptor *sd, const SID *owner );
 117
 118 /* change notification functions */
 119
 120 extern void do_change_notify( int unix_fd );
 121 extern void sigio_callback(void);
 122 extern struct object *create_dir_obj( struct fd *fd );
 123
 124 /* completion */
 125
 126 extern struct completion *get_completion_obj( struct process *process, obj_handle_t handle, unsigned int access );
 127 extern void add_completion( struct completion *completion, apc_param_t ckey, apc_param_t cvalue,
 128                             unsigned int status, unsigned int information );
 129
 130 /* serial port functions */
 131
 132 extern int is_serial_fd( struct fd *fd );
 133 extern struct object *create_serial( struct fd *fd );
 134
 135 /* async I/O functions */
 136 extern struct async_queue *create_async_queue( struct fd *fd );
 137 extern void free_async_queue( struct async_queue *queue );
 138 extern struct async *create_async( struct thread *thread, struct async_queue *queue,
 139                                    const async_data_t *data );
 140 extern void async_set_timeout( struct async *async, timeout_t timeout, unsigned int status );
 141 extern void async_set_result( struct object *obj, unsigned int status,
 142                               unsigned int total, client_ptr_t apc );
 143 extern int async_waiting( struct async_queue *queue );
 144 extern void async_terminate( struct async *async, unsigned int status );
 145 extern void async_wake_up( struct async_queue *queue, unsigned int status );
 146 extern struct completion *fd_get_completion( struct fd *fd, apc_param_t *p_key );
 147 extern void fd_copy_completion( struct fd *src, struct fd *dst );
 148
 149 /* access rights that require Unix read permission */
 150 #define FILE_UNIX_READ_ACCESS (FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA)
 151
 152 /* access rights that require Unix write permission */
 153 #define FILE_UNIX_WRITE_ACCESS (FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA)
 154
 155 #endif  /* __WINE_SERVER_FILE_H */