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