From: Rémi Bernon rbernon@codeweavers.com
Based on a patch by Huw Davies huw@codeweavers.com. --- server/directory.c | 17 +++++++++++++++++ server/file.h | 6 ++++++ server/mapping.c | 29 +++++++++++++++++++++++++++++ server/protocol.def | 6 ++++++ server/user.h | 2 ++ server/winstation.c | 24 ++++++++++++++++++++++++ 6 files changed, 84 insertions(+)
diff --git a/server/directory.c b/server/directory.c index 23d7eb0a2b7..5c8671d6146 100644 --- a/server/directory.c +++ b/server/directory.c @@ -37,6 +37,7 @@ #include "process.h" #include "file.h" #include "unicode.h" +#include "user.h"
#define HASH_SIZE 7 /* default hash size */
@@ -277,6 +278,22 @@ struct object *get_directory_obj( struct process *process, obj_handle_t handle ) return get_handle_obj( process, handle, 0, &directory_ops ); }
+struct object *create_desktop_map_directory( struct winstation *winstation ) +{ + static const WCHAR dir_desktop_mapsW[] = {'_','_','w','i','n','e','_','d','e','s','k','t','o','p','_','m','a','p','p','i','n','g','s'}; + static const struct unicode_str dir_desktop_maps_str = {dir_desktop_mapsW, sizeof(dir_desktop_mapsW)}; + struct object *root; + struct directory *mapping_root, *ret; + const struct unicode_str winsta_name = {winstation->obj.name->name, winstation->obj.name->len}; + + root = winstation->obj.name->parent; + mapping_root = create_directory( root, &dir_desktop_maps_str, OBJ_OPENIF, HASH_SIZE, NULL ); + ret = create_directory( &mapping_root->obj, &winsta_name, OBJ_OPENIF, HASH_SIZE, NULL ); + release_object( &mapping_root->obj ); + + return &ret->obj; +} + /* Global initialization */
static void create_session( unsigned int id ) diff --git a/server/file.h b/server/file.h index a43b4afad08..85aba366847 100644 --- a/server/file.h +++ b/server/file.h @@ -156,6 +156,10 @@ extern struct timeout_user *add_timeout_user( timeout_t when, timeout_callback f extern void remove_timeout_user( struct timeout_user *user ); extern const char *get_timeout_str( timeout_t timeout );
+/* directory functions */ + +extern struct object *create_desktop_map_directory( struct winstation *winstation ); + /* file functions */
extern struct file *get_file_obj( struct process *process, obj_handle_t handle, @@ -182,6 +186,8 @@ extern void free_mapped_views( struct process *process ); extern int get_page_size(void); extern struct mapping *create_fd_mapping( struct object *root, const struct unicode_str *name, struct fd *fd, unsigned int attr, const struct security_descriptor *sd ); +extern struct object *create_shared_mapping( struct object *root, const struct unicode_str *name, mem_size_t size, + unsigned int attr, const struct security_descriptor *sd, void **ptr ); extern struct object *create_user_data_mapping( struct object *root, const struct unicode_str *name, unsigned int attr, const struct security_descriptor *sd );
diff --git a/server/mapping.c b/server/mapping.c index 5d4df2050e4..e01b9b781d7 100644 --- a/server/mapping.c +++ b/server/mapping.c @@ -29,6 +29,7 @@ #include <sys/stat.h> #include <sys/mman.h> #include <unistd.h> +#include <errno.h>
#include "ntstatus.h" #define WIN32_NO_STATUS @@ -161,6 +162,7 @@ struct mapping pe_image_info_t image; /* image info (for PE image mapping) */ struct ranges *committed; /* list of committed ranges in this mapping */ struct shared_map *shared; /* temp file for shared PE mapping */ + void *shared_ptr; /* mmaped pointer for shared mappings */ };
static void mapping_dump( struct object *obj, int verbose ); @@ -896,6 +898,7 @@ static struct mapping *create_mapping( struct object *root, const struct unicode mapping->fd = NULL; mapping->shared = NULL; mapping->committed = NULL; + mapping->shared_ptr = MAP_FAILED;
if (!(mapping->flags = get_mapping_flags( handle, flags ))) goto error;
@@ -1096,6 +1099,7 @@ static void mapping_destroy( struct object *obj ) if (mapping->fd) release_object( mapping->fd ); if (mapping->committed) release_object( mapping->committed ); if (mapping->shared) release_object( mapping->shared ); + if (mapping->shared_ptr != MAP_FAILED) munmap( mapping->shared_ptr, mapping->size ); }
static enum server_fd_type mapping_get_fd_type( struct fd *fd ) @@ -1109,6 +1113,31 @@ int get_page_size(void) return page_mask + 1; }
+struct object *create_shared_mapping( struct object *root, const struct unicode_str *name, mem_size_t size, + unsigned int attr, const struct security_descriptor *sd, void **ptr ) +{ + static unsigned int access = FILE_READ_DATA | FILE_WRITE_DATA; + struct mapping *mapping; + + if (!(mapping = create_mapping( root, name, attr, size, SEC_COMMIT, 0, access, sd ))) return NULL; + + if (mapping->shared_ptr == MAP_FAILED) + { + int fd = get_unix_fd( mapping->fd ); + + mapping->shared_ptr = mmap( NULL, mapping->size, PROT_WRITE, MAP_SHARED, fd, 0 ); + if (mapping->shared_ptr == MAP_FAILED) + { + fprintf( stderr, "wine: Failed to map shared memory: %u %m\n", errno ); + release_object( &mapping->obj ); + return NULL; + } + } + + *ptr = mapping->shared_ptr; + return &mapping->obj; +} + struct object *create_user_data_mapping( struct object *root, const struct unicode_str *name, unsigned int attr, const struct security_descriptor *sd ) { diff --git a/server/protocol.def b/server/protocol.def index 919297c818c..d6cfd8e9f72 100644 --- a/server/protocol.def +++ b/server/protocol.def @@ -890,6 +890,12 @@ typedef struct lparam_t info; } cursor_pos_t;
+struct desktop_shared_memory +{ + int placeholder; +}; +typedef volatile struct desktop_shared_memory desktop_shm_t; + /****************************************************************/ /* Request declarations */
diff --git a/server/user.h b/server/user.h index b6f47bcac1c..20b7acb6fdc 100644 --- a/server/user.h +++ b/server/user.h @@ -77,6 +77,8 @@ struct desktop unsigned int users; /* processes and threads using this desktop */ struct global_cursor cursor; /* global cursor information */ unsigned char keystate[256]; /* asynchronous key state */ + struct object *shared_mapping; /* desktop shared memory mapping */ + const desktop_shm_t *shared; /* desktop shared memory */ };
/* user handles functions */ diff --git a/server/winstation.c b/server/winstation.c index 5903497d61e..a32a0e39052 100644 --- a/server/winstation.c +++ b/server/winstation.c @@ -217,6 +217,22 @@ struct desktop *get_desktop_obj( struct process *process, obj_handle_t handle, u return (struct desktop *)get_handle_obj( process, handle, access, &desktop_ops ); }
+static int init_desktop_mapping( struct desktop *desktop, const struct unicode_str *name ) +{ + struct object *dir; + + desktop->shared = NULL; + desktop->shared_mapping = NULL; + + if (!(dir = create_desktop_map_directory( desktop->winstation ))) return 0; + if ((desktop->shared_mapping = create_shared_mapping( dir, name, sizeof(struct desktop_shared_memory), + 0, NULL, (void **)&desktop->shared ))) + memset( (void *)desktop->shared, 0, sizeof(*desktop->shared) ); + release_object( dir ); + + return !!desktop->shared; +} + /* create a desktop object */ static struct desktop *create_desktop( const struct unicode_str *name, unsigned int attr, unsigned int flags, struct winstation *winstation ) @@ -240,6 +256,11 @@ static struct desktop *create_desktop( const struct unicode_str *name, unsigned memset( desktop->keystate, 0, sizeof(desktop->keystate) ); list_add_tail( &winstation->desktops, &desktop->entry ); list_init( &desktop->hotkeys ); + if (!init_desktop_mapping( desktop, name )) + { + release_object( desktop ); + return NULL; + } } else { @@ -297,6 +318,8 @@ static void desktop_destroy( struct object *obj ) if (desktop->global_hooks) release_object( desktop->global_hooks ); if (desktop->close_timeout) remove_timeout_user( desktop->close_timeout ); list_remove( &desktop->entry ); + if (desktop->shared_mapping) release_object( desktop->shared_mapping ); + desktop->shared_mapping = NULL; release_object( desktop->winstation ); }
@@ -312,6 +335,7 @@ static void close_desktop_timeout( void *private )
desktop->close_timeout = NULL; unlink_named_object( &desktop->obj ); /* make sure no other process can open it */ + unlink_named_object( &desktop->shared->obj ); post_desktop_message( desktop, WM_CLOSE, 0, 0 ); /* and signal the owner to quit */ }