server/object.h

   1 /*
   2  * Wine server objects
   3  *
   4  * Copyright (C) 1998 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_OBJECT_H
  22 #define __WINE_SERVER_OBJECT_H
  23
  24 #ifdef HAVE_SYS_POLL_H
  25 #include <sys/poll.h>
  26 #endif
  27
  28 #include <sys/time.h>
  29 #include "wine/server_protocol.h"
  30 #include "wine/list.h"
  31
  32 #define DEBUG_OBJECTS
  33
  34 /* kernel objects */
  35
  36 struct namespace;
  37 struct object;
  38 struct object_name;
  39 struct thread;
  40 struct process;
  41 struct token;
  42 struct file;
  43 struct wait_queue_entry;
  44 struct async;
  45 struct async_queue;
  46 struct winstation;
  47 struct directory;
  48 struct object_type;
  49
  50
  51 struct unicode_str
  52 {
  53     const WCHAR *str;
  54     data_size_t  len;
  55 };
  56
  57 /* operations valid on all objects */
  58 struct object_ops
  59 {
  60     /* size of this object type */
  61     size_t size;
  62     /* dump the object (for debugging) */
  63     void (*dump)(struct object *,int);
  64     /* return the object type */
  65     struct object_type *(*get_type)(struct object *);
  66     /* add a thread to the object wait queue */
  67     int  (*add_queue)(struct object *,struct wait_queue_entry *);
  68     /* remove a thread from the object wait queue */
  69     void (*remove_queue)(struct object *,struct wait_queue_entry *);
  70     /* is object signaled? */
  71     int  (*signaled)(struct object *,struct thread *);
  72     /* wait satisfied; return 1 if abandoned */
  73     int  (*satisfied)(struct object *,struct thread *);
  74     /* signal an object */
  75     int  (*signal)(struct object *, unsigned int);
  76     /* return an fd object that can be used to read/write from the object */
  77     struct fd *(*get_fd)(struct object *);
  78     /* map access rights to the specific rights for this object */
  79     unsigned int (*map_access)(struct object *, unsigned int);
  80     /* returns the security descriptor of the object */
  81     struct security_descriptor *(*get_sd)( struct object * );
  82     /* sets the security descriptor of the object */
  83     int (*set_sd)( struct object *, const struct security_descriptor *, unsigned int );
  84     /* lookup a name if an object has a namespace */
  85     struct object *(*lookup_name)(struct object *, struct unicode_str *,unsigned int);
  86     /* open a file object to access this object */
  87     struct object *(*open_file)(struct object *, unsigned int access, unsigned int sharing,
  88                                 unsigned int options);
  89     /* close a handle to this object */
  90     int (*close_handle)(struct object *,struct process *,obj_handle_t);
  91     /* destroy on refcount == 0 */
  92     void (*destroy)(struct object *);
  93 };
  94
  95 struct object
  96 {
  97     unsigned int              refcount;    /* reference count */
  98     const struct object_ops  *ops;
  99     struct list               wait_queue;
 100     struct object_name       *name;
 101     struct security_descriptor *sd;
 102 #ifdef DEBUG_OBJECTS
 103     struct list               obj_list;
 104 #endif
 105 };
 106
 107 struct wait_queue_entry
 108 {
 109     struct list     entry;
 110     struct object  *obj;
 111     struct thread  *thread;
 112 };
 113
 114 extern void *mem_alloc( size_t size );  /* malloc wrapper */
 115 extern void *memdup( const void *data, size_t len );
 116 extern void *alloc_object( const struct object_ops *ops );
 117 extern const WCHAR *get_object_name( struct object *obj, data_size_t *len );
 118 extern void dump_object_name( struct object *obj );
 119 extern void *create_object( struct namespace *namespace, const struct object_ops *ops,
 120                             const struct unicode_str *name, struct object *parent );
 121 extern void *create_named_object( struct namespace *namespace, const struct object_ops *ops,
 122                                   const struct unicode_str *name, unsigned int attributes );
 123 extern void unlink_named_object( struct object *obj );
 124 extern void make_object_static( struct object *obj );
 125 extern struct namespace *create_namespace( unsigned int hash_size );
 126 /* grab/release_object can take any pointer, but you better make sure */
 127 /* that the thing pointed to starts with a struct object... */
 128 extern struct object *grab_object( void *obj );
 129 extern void release_object( void *obj );
 130 extern struct object *find_object( const struct namespace *namespace, const struct unicode_str *name,
 131                                    unsigned int attributes );
 132 extern struct object *find_object_index( const struct namespace *namespace, unsigned int index );
 133 extern struct object_type *no_get_type( struct object *obj );
 134 extern int no_add_queue( struct object *obj, struct wait_queue_entry *entry );
 135 extern int no_satisfied( struct object *obj, struct thread *thread );
 136 extern int no_signal( struct object *obj, unsigned int access );
 137 extern struct fd *no_get_fd( struct object *obj );
 138 extern unsigned int no_map_access( struct object *obj, unsigned int access );
 139 extern struct security_descriptor *default_get_sd( struct object *obj );
 140 extern int default_set_sd( struct object *obj, const struct security_descriptor *sd, unsigned int set_info );
 141 extern struct object *no_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attributes );
 142 extern struct object *no_open_file( struct object *obj, unsigned int access, unsigned int sharing,
 143                                     unsigned int options );
 144 extern int no_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
 145 extern void no_destroy( struct object *obj );
 146 #ifdef DEBUG_OBJECTS
 147 extern void dump_objects(void);
 148 extern void close_objects(void);
 149 #endif
 150
 151 /* event functions */
 152
 153 struct event;
 154
 155 extern struct event *create_event( struct directory *root, const struct unicode_str *name,
 156                                    unsigned int attr, int manual_reset, int initial_state,
 157                                    const struct security_descriptor *sd );
 158 extern struct event *get_event_obj( struct process *process, obj_handle_t handle, unsigned int access );
 159 extern void pulse_event( struct event *event );
 160 extern void set_event( struct event *event );
 161 extern void reset_event( struct event *event );
 162
 163 /* mutex functions */
 164
 165 extern void abandon_mutexes( struct thread *thread );
 166
 167 /* serial functions */
 168
 169 int get_serial_async_timeout(struct object *obj, int type, int count);
 170
 171 /* socket functions */
 172
 173 extern void sock_init(void);
 174
 175 /* debugger functions */
 176
 177 extern int set_process_debugger( struct process *process, struct thread *debugger );
 178 extern void generate_debug_event( struct thread *thread, int code, void *arg );
 179 extern void generate_startup_debug_events( struct process *process, void *entry );
 180 extern void debug_exit_thread( struct thread *thread );
 181
 182 /* mapping functions */
 183
 184 extern int get_page_size(void);
 185
 186 /* registry functions */
 187
 188 extern void init_registry(void);
 189 extern void flush_registry(void);
 190
 191 /* signal functions */
 192
 193 extern void start_watchdog(void);
 194 extern void stop_watchdog(void);
 195 extern int watchdog_triggered(void);
 196 extern void init_signals(void);
 197
 198 /* atom functions */
 199
 200 extern atom_t add_global_atom( struct winstation *winstation, const WCHAR *str, data_size_t len );
 201 extern atom_t find_global_atom( struct winstation *winstation, const WCHAR *str, data_size_t len );
 202 extern int grab_global_atom( struct winstation *winstation, atom_t atom );
 203 extern void release_global_atom( struct winstation *winstation, atom_t atom );
 204
 205 /* directory functions */
 206
 207 extern struct directory *get_directory_obj( struct process *process, obj_handle_t handle, unsigned int access );
 208 extern struct object *find_object_dir( struct directory *root, const struct unicode_str *name,
 209                                        unsigned int attr, struct unicode_str *name_left );
 210 extern void *create_named_object_dir( struct directory *root, const struct unicode_str *name,
 211                                       unsigned int attr, const struct object_ops *ops );
 212 extern void *open_object_dir( struct directory *root, const struct unicode_str *name,
 213                               unsigned int attr, const struct object_ops *ops );
 214 extern struct object_type *get_object_type( const struct unicode_str *name );
 215 extern void init_directories(void);
 216
 217 /* symbolic link functions */
 218
 219 extern struct symlink *create_symlink( struct directory *root, const struct unicode_str *name,
 220                                        unsigned int attr, const struct unicode_str *target );
 221
 222 /* devices */
 223 extern void create_named_pipe_device( struct directory *root, const struct unicode_str *name );
 224 extern void create_mailslot_device( struct directory *root, const struct unicode_str *name );
 225
 226 /* global variables */
 227
 228   /* command-line options */
 229 extern int debug_level;
 230 extern int foreground;
 231 extern timeout_t master_socket_timeout;
 232 extern const char *server_argv0;
 233
 234   /* server start time used for GetTickCount() */
 235 extern timeout_t server_start_time;
 236
 237 #endif  /* __WINE_SERVER_OBJECT_H */