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server: Add a helper function to create a symlink to an existing object. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2016-07-18 15:34:08 +09:00
parent 84c3b8ae28
commit c7f16d6220
7 changed files with 66 additions and 46 deletions
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5
server/device.c
View File

@ -618,7 +618,7 @@ static struct device *create_device( struct object *root, const struct unicode_s
return device; return device;
} }
struct device *create_unix_device( struct object *root, const struct unicode_str *name, struct object *create_unix_device( struct object *root, const struct unicode_str *name,
const char *unix_path ) const char *unix_path )
{ {
struct device *device; struct device *device;
@ -628,9 +628,8 @@ struct device *create_unix_device( struct object *root, const struct unicode_str
device->unix_path = strdup( unix_path ); device->unix_path = strdup( unix_path );
device->manager = NULL; /* no manager, requests go straight to the Unix device */ device->manager = NULL; /* no manager, requests go straight to the Unix device */
list_init( &device->files ); list_init( &device->files );
make_object_static( &device->obj );
} }
return device; return &device->obj;
} }

56
server/directory.c
View File

@ -252,10 +252,7 @@ void init_directories(void)
static const WCHAR dir_globalW[] = {'\\','?','?'}; static const WCHAR dir_globalW[] = {'\\','?','?'};
static const WCHAR dir_driverW[] = {'D','r','i','v','e','r'}; static const WCHAR dir_driverW[] = {'D','r','i','v','e','r'};
static const WCHAR dir_deviceW[] = {'D','e','v','i','c','e'}; static const WCHAR dir_deviceW[] = {'D','e','v','i','c','e'};
static const WCHAR dir_nullW[] = {'\\','D','e','v','i','c','e','\\','N','u','l','l'};
static const WCHAR dir_basenamedW[] = {'\\','B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'}; static const WCHAR dir_basenamedW[] = {'\\','B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'};
static const WCHAR dir_named_pipeW[] = {'\\','D','e','v','i','c','e','\\','N','a','m','e','d','P','i','p','e'};
static const WCHAR dir_mailslotW[] = {'\\','D','e','v','i','c','e','\\','M','a','i','l','S','l','o','t'};
static const WCHAR dir_objtypeW[] = {'O','b','j','e','c','t','T','y','p','e','s'}; static const WCHAR dir_objtypeW[] = {'O','b','j','e','c','t','T','y','p','e','s'};
static const WCHAR dir_sessionsW[] = {'S','e','s','s','i','o','n','s'}; static const WCHAR dir_sessionsW[] = {'S','e','s','s','i','o','n','s'};
static const WCHAR dir_1W[] = {'1'}; static const WCHAR dir_1W[] = {'1'};
@ -265,10 +262,7 @@ void init_directories(void)
static const struct unicode_str dir_global_str = {dir_globalW, sizeof(dir_globalW)}; static const struct unicode_str dir_global_str = {dir_globalW, sizeof(dir_globalW)};
static const struct unicode_str dir_driver_str = {dir_driverW, sizeof(dir_driverW)}; static const struct unicode_str dir_driver_str = {dir_driverW, sizeof(dir_driverW)};
static const struct unicode_str dir_device_str = {dir_deviceW, sizeof(dir_deviceW)}; static const struct unicode_str dir_device_str = {dir_deviceW, sizeof(dir_deviceW)};
static const struct unicode_str dir_null_str = {dir_nullW, sizeof(dir_nullW)};
static const struct unicode_str dir_basenamed_str = {dir_basenamedW, sizeof(dir_basenamedW)}; static const struct unicode_str dir_basenamed_str = {dir_basenamedW, sizeof(dir_basenamedW)};
static const struct unicode_str dir_named_pipe_str = {dir_named_pipeW, sizeof(dir_named_pipeW)};
static const struct unicode_str dir_mailslot_str = {dir_mailslotW, sizeof(dir_mailslotW)};
static const struct unicode_str dir_objtype_str = {dir_objtypeW, sizeof(dir_objtypeW)}; static const struct unicode_str dir_objtype_str = {dir_objtypeW, sizeof(dir_objtypeW)};
static const struct unicode_str dir_sessions_str = {dir_sessionsW, sizeof(dir_sessionsW)}; static const struct unicode_str dir_sessions_str = {dir_sessionsW, sizeof(dir_sessionsW)};
static const struct unicode_str dir_1_str = {dir_1W, sizeof(dir_1W)}; static const struct unicode_str dir_1_str = {dir_1W, sizeof(dir_1W)};
@ -285,7 +279,6 @@ void init_directories(void)
static const WCHAR link_mailslotW[] = {'M','A','I','L','S','L','O','T'}; static const WCHAR link_mailslotW[] = {'M','A','I','L','S','L','O','T'};
static const WCHAR link_basenamedW[] = {'B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'}; static const WCHAR link_basenamedW[] = {'B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s'};
static const WCHAR link_sessionW[] = {'S','e','s','s','i','o','n'}; static const WCHAR link_sessionW[] = {'S','e','s','s','i','o','n'};
static const WCHAR link_sessionsW[] = {'\\','S','e','s','s','i','o','n','s'};
static const struct unicode_str link_dosdev_str = {link_dosdevW, sizeof(link_dosdevW)}; static const struct unicode_str link_dosdev_str = {link_dosdevW, sizeof(link_dosdevW)};
static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)}; static const struct unicode_str link_global_str = {link_globalW, sizeof(link_globalW)};
static const struct unicode_str link_local_str = {link_localW, sizeof(link_localW)}; static const struct unicode_str link_local_str = {link_localW, sizeof(link_localW)};
@ -294,7 +287,6 @@ void init_directories(void)
static const struct unicode_str link_mailslot_str = {link_mailslotW, sizeof(link_mailslotW)}; static const struct unicode_str link_mailslot_str = {link_mailslotW, sizeof(link_mailslotW)};
static const struct unicode_str link_basenamed_str = {link_basenamedW, sizeof(link_basenamedW)}; static const struct unicode_str link_basenamed_str = {link_basenamedW, sizeof(link_basenamedW)};
static const struct unicode_str link_session_str = {link_sessionW, sizeof(link_sessionW)}; static const struct unicode_str link_session_str = {link_sessionW, sizeof(link_sessionW)};
static const struct unicode_str link_sessions_str = {link_sessionsW, sizeof(link_sessionsW)};
/* devices */ /* devices */
static const WCHAR named_pipeW[] = {'N','a','m','e','d','P','i','p','e'}; static const WCHAR named_pipeW[] = {'N','a','m','e','d','P','i','p','e'};
@ -324,7 +316,8 @@ void init_directories(void)
static const struct unicode_str keyed_event_crit_sect_str = {keyed_event_crit_sectW, sizeof(keyed_event_crit_sectW)}; static const struct unicode_str keyed_event_crit_sect_str = {keyed_event_crit_sectW, sizeof(keyed_event_crit_sectW)};
struct directory *dir_driver, *dir_device, *dir_global, *dir_basenamed, *dir_sessions, *dir_1, *dir_kernel, *dir_windows, *dir_winstation; struct directory *dir_driver, *dir_device, *dir_global, *dir_basenamed, *dir_sessions, *dir_1, *dir_kernel, *dir_windows, *dir_winstation;
struct symlink *link_dosdev, *link_global1, *link_global2, *link_local, *link_nul, *link_pipe, *link_mailslot, *link_basenamed, *link_session; struct object *link_dosdev, *link_global1, *link_global2, *link_local, *link_nul, *link_pipe, *link_mailslot, *link_basenamed, *link_session;
struct object *named_pipe_device, *mailslot_device, *null_device;
struct keyed_event *keyed_event; struct keyed_event *keyed_event;
unsigned int i; unsigned int i;
@ -347,29 +340,32 @@ void init_directories(void)
dir_basenamed = create_directory( NULL, &dir_basenamed_str, 0, 37, NULL ); dir_basenamed = create_directory( NULL, &dir_basenamed_str, 0, 37, NULL );
/* devices */ /* devices */
create_named_pipe_device( &dir_device->obj, &named_pipe_str ); named_pipe_device = create_named_pipe_device( &dir_device->obj, &named_pipe_str );
create_mailslot_device( &dir_device->obj, &mailslot_str ); mailslot_device = create_mailslot_device( &dir_device->obj, &mailslot_str );
create_unix_device( &dir_device->obj, &null_str, "/dev/null" ); null_device = create_unix_device( &dir_device->obj, &null_str, "/dev/null" );
make_object_static( named_pipe_device );
make_object_static( mailslot_device );
make_object_static( null_device );
/* symlinks */ /* symlinks */
link_dosdev = create_symlink( &root_directory->obj, &link_dosdev_str, 0, &dir_global_str, NULL ); link_dosdev = create_obj_symlink( &root_directory->obj, &link_dosdev_str, 0, &dir_global->obj, NULL );
link_global1 = create_symlink( &dir_global->obj, &link_global_str, 0, &dir_global_str, NULL ); link_global1 = create_obj_symlink( &dir_global->obj, &link_global_str, 0, &dir_global->obj, NULL );
link_global2 = create_symlink( &dir_basenamed->obj, &link_global_str, 0, &dir_basenamed_str, NULL ); link_global2 = create_obj_symlink( &dir_basenamed->obj, &link_global_str, 0, &dir_basenamed->obj, NULL );
link_local = create_symlink( &dir_basenamed->obj, &link_local_str, 0, &dir_basenamed_str, NULL ); link_local = create_obj_symlink( &dir_basenamed->obj, &link_local_str, 0, &dir_basenamed->obj, NULL );
link_nul = create_symlink( &dir_global->obj, &link_nul_str, 0, &dir_null_str, NULL ); link_nul = create_obj_symlink( &dir_global->obj, &link_nul_str, 0, null_device, NULL );
link_pipe = create_symlink( &dir_global->obj, &link_pipe_str, 0, &dir_named_pipe_str, NULL ); link_pipe = create_obj_symlink( &dir_global->obj, &link_pipe_str, 0, named_pipe_device, NULL );
link_mailslot = create_symlink( &dir_global->obj, &link_mailslot_str, 0, &dir_mailslot_str, NULL ); link_mailslot = create_obj_symlink( &dir_global->obj, &link_mailslot_str, 0, mailslot_device, NULL );
link_basenamed = create_symlink( &dir_1->obj, &link_basenamed_str, 0, &dir_basenamed_str, NULL ); link_basenamed = create_obj_symlink( &dir_1->obj, &link_basenamed_str, 0, &dir_basenamed->obj, NULL );
link_session = create_symlink( &dir_basenamed->obj, &link_session_str, 0, &link_sessions_str, NULL ); link_session = create_obj_symlink( &dir_basenamed->obj, &link_session_str, 0, &dir_sessions->obj, NULL );
make_object_static( (struct object *)link_dosdev ); make_object_static( link_dosdev );
make_object_static( (struct object *)link_global1 ); make_object_static( link_global1 );
make_object_static( (struct object *)link_global2 ); make_object_static( link_global2 );
make_object_static( (struct object *)link_local ); make_object_static( link_local );
make_object_static( (struct object *)link_nul ); make_object_static( link_nul );
make_object_static( (struct object *)link_pipe ); make_object_static( link_pipe );
make_object_static( (struct object *)link_mailslot ); make_object_static( link_mailslot );
make_object_static( (struct object *)link_basenamed ); make_object_static( link_basenamed );
make_object_static( (struct object *)link_session ); make_object_static( link_session );
/* events */ /* events */
for (i = 0; i < sizeof(kernel_events)/sizeof(kernel_events[0]); i++) for (i = 0; i < sizeof(kernel_events)/sizeof(kernel_events[0]); i++)

6
server/file.h
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@ -141,9 +141,9 @@ extern int get_page_size(void);
/* device functions */ /* device functions */
extern void create_named_pipe_device( struct object *root, const struct unicode_str *name ); extern struct object *create_named_pipe_device( struct object *root, const struct unicode_str *name );
extern void create_mailslot_device( struct object *root, const struct unicode_str *name ); extern struct object *create_mailslot_device( struct object *root, const struct unicode_str *name );
extern struct device *create_unix_device( struct object *root, const struct unicode_str *name, extern struct object *create_unix_device( struct object *root, const struct unicode_str *name,
const char *unix_path ); const char *unix_path );
/* change notification functions */ /* change notification functions */

4
server/mailslot.c
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@ -397,7 +397,7 @@ static enum server_fd_type mailslot_device_get_fd_type( struct fd *fd )
return FD_TYPE_DEVICE; return FD_TYPE_DEVICE;
} }
void create_mailslot_device( struct object *root, const struct unicode_str *name ) struct object *create_mailslot_device( struct object *root, const struct unicode_str *name )
{ {
struct mailslot_device *dev; struct mailslot_device *dev;
@ -412,7 +412,7 @@ void create_mailslot_device( struct object *root, const struct unicode_str *name
dev = NULL; dev = NULL;
} }
} }
if (dev) make_object_static( &dev->obj ); return &dev->obj;
} }
static struct mailslot *create_mailslot( struct object *root, static struct mailslot *create_mailslot( struct object *root,

4
server/named_pipe.c
View File

@ -500,7 +500,7 @@ static enum server_fd_type named_pipe_device_get_fd_type( struct fd *fd )
return FD_TYPE_DEVICE; return FD_TYPE_DEVICE;
} }
void create_named_pipe_device( struct object *root, const struct unicode_str *name ) struct object *create_named_pipe_device( struct object *root, const struct unicode_str *name )
{ {
struct named_pipe_device *dev; struct named_pipe_device *dev;
@ -515,7 +515,7 @@ void create_named_pipe_device( struct object *root, const struct unicode_str *na
dev = NULL; dev = NULL;
} }
} }
if (dev) make_object_static( &dev->obj ); return &dev->obj;
} }
static int pipe_data_remaining( struct pipe_server *server ) static int pipe_data_remaining( struct pipe_server *server )

4
server/object.h
View File

@ -235,8 +235,8 @@ extern void init_directories(void);
/* symbolic link functions */ /* symbolic link functions */
extern struct symlink *create_symlink( struct object *root, const struct unicode_str *name, extern struct object *create_obj_symlink( struct object *root, const struct unicode_str *name,
unsigned int attr, const struct unicode_str *target, unsigned int attr, struct object *target,
const struct security_descriptor *sd ); const struct security_descriptor *sd );
/* global variables */ /* global variables */

27
server/symlink.c
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@ -133,7 +133,7 @@ static void symlink_destroy( struct object *obj )
free( symlink->target ); free( symlink->target );
} }
struct symlink *create_symlink( struct object *root, const struct unicode_str *name, static struct symlink *create_symlink( struct object *root, const struct unicode_str *name,
unsigned int attr, const struct unicode_str *target, unsigned int attr, const struct unicode_str *target,
const struct security_descriptor *sd ) const struct security_descriptor *sd )
{ {
@ -160,6 +160,31 @@ struct symlink *create_symlink( struct object *root, const struct unicode_str *n
return symlink; return symlink;
} }
/* create a symlink pointing to an existing object */
struct object *create_obj_symlink( struct object *root, const struct unicode_str *name,
unsigned int attr, struct object *target,
const struct security_descriptor *sd )
{
struct symlink *symlink;
data_size_t len;
WCHAR *target_name;
if (!(target_name = get_object_full_name( target, &len )))
{
set_error( STATUS_INVALID_PARAMETER );
return NULL;
}
if ((symlink = create_named_object( root, &symlink_ops, name, attr, sd )) &&
(get_error() != STATUS_OBJECT_NAME_EXISTS))
{
symlink->target = target_name;
symlink->len = len;
}
else free( target_name );
return &symlink->obj;
}
/* create a symbolic link object */ /* create a symbolic link object */
DECL_HANDLER(create_symlink) DECL_HANDLER(create_symlink)