Module: wine Branch: master Commit: 6a7a7bbe97b210af5c5983fd09a707c33538073c URL: https://source.winehq.org/git/wine.git/?a=commit;h=6a7a7bbe97b210af5c5983fd0...
Author: Alexandre Julliard julliard@winehq.org Date: Thu Jul 7 11:49:50 2022 +0200
server: Implement link_name() for registry keys.
Signed-off-by: Alexandre Julliard julliard@winehq.org
---
server/registry.c | 78 +++++++++++++++++++++++++++++++++---------------------- 1 file changed, 47 insertions(+), 31 deletions(-)
diff --git a/server/registry.c b/server/registry.c index c7b56344bae..2c52ec85d29 100644 --- a/server/registry.c +++ b/server/registry.c @@ -164,6 +164,7 @@ static void key_dump( struct object *obj, int verbose ); static unsigned int key_map_access( struct object *obj, unsigned int access ); static struct security_descriptor *key_get_sd( struct object *obj ); static WCHAR *key_get_full_name( struct object *obj, data_size_t *len ); +static int key_link_name( struct object *obj, struct object_name *name, struct object *parent ); static void key_unlink_name( struct object *obj, struct object_name *name ); static int key_close_handle( struct object *obj, struct process *process, obj_handle_t handle ); static void key_destroy( struct object *obj ); @@ -184,7 +185,7 @@ static const struct object_ops key_ops = default_set_sd, /* set_sd */ key_get_full_name, /* get_full_name */ no_lookup_name, /* lookup_name */ - no_link_name, /* link_name */ + key_link_name, /* link_name */ key_unlink_name, /* unlink_name */ no_open_file, /* open_file */ no_kernel_obj_list, /* get_kernel_obj_list */ @@ -202,6 +203,7 @@ static inline struct key *get_parent( const struct key *key ) { struct object *parent = key->obj.name->parent;
+ if (!parent || parent->ops != &key_ops) return NULL; return (struct key *)parent; }
@@ -483,6 +485,40 @@ static WCHAR *key_get_full_name( struct object *obj, data_size_t *ret_len ) return (WCHAR *)ret; }
+static int key_link_name( struct object *obj, struct object_name *name, struct object *parent ) +{ + struct key *key = (struct key *)obj; + struct key *parent_key = (struct key *)parent; + struct unicode_str tmp; + int i, index; + + if (parent->ops != &key_ops) + { + /* only the root key can be created inside a normal directory */ + if (!root_key) return directory_link_name( obj, name, parent ); + set_error( STATUS_OBJECT_NAME_NOT_FOUND ); + return 0; + } + + if (parent_key->last_subkey + 1 == parent_key->nb_subkeys) + { + /* need to grow the array */ + if (!grow_subkeys( parent_key )) return 0; + } + tmp.str = name->name; + tmp.len = name->len; + find_subkey( parent_key, &tmp, &index ); + + for (i = ++parent_key->last_subkey; i > index; i--) + parent_key->subkeys[i] = parent_key->subkeys[i - 1]; + parent_key->subkeys[index] = (struct key *)grab_object( key ); + if (is_wow6432node( name->name, name->len ) && + !is_wow6432node( parent_key->obj.name->name, parent_key->obj.name->len )) + parent_key->wow6432node = key; + name->parent = parent; + return 1; +} + static void key_unlink_name( struct object *obj, struct object_name *name ) { struct key *key = (struct key *)obj; @@ -676,33 +712,14 @@ static void touch_key( struct key *key, unsigned int change ) }
/* allocate a subkey for a given key, and return its index */ -static struct key *alloc_subkey( struct key *parent, const struct unicode_str *name, - int index, timeout_t modif ) +static struct key *alloc_subkey( struct key *parent, const struct unicode_str *name, timeout_t modif ) { struct key *key; - int i;
- if (name->len > MAX_NAME_LEN * sizeof(WCHAR)) - { - set_error( STATUS_INVALID_PARAMETER ); - return NULL; - } - if (parent->last_subkey + 1 == parent->nb_subkeys) - { - /* need to grow the array */ - if (!grow_subkeys( parent )) return NULL; - } - if ((key = alloc_key( name, modif )) != NULL) - { - key->obj.name->parent = &parent->obj; - for (i = ++parent->last_subkey; i > index; i--) - parent->subkeys[i] = parent->subkeys[i-1]; - parent->subkeys[index] = key; - if (is_wow6432node( key->obj.name->name, key->obj.name->len ) && - !is_wow6432node( parent->obj.name->name, parent->obj.name->len )) - parent->wow6432node = key; - } - return key; + if (!(key = alloc_key( name, modif ))) return NULL; + if (key_link_name( &key->obj, key->obj.name, &parent->obj )) return key; + release_object( key ); + return NULL; }
/* return the wow64 variant of the key, or the key itself if none */ @@ -850,7 +867,7 @@ static struct key *create_key( struct key *key, const struct unicode_str *name, return NULL; } make_dirty( key ); - if (!(key = alloc_subkey( key, &token, index, current_time ))) return NULL; + if (!(key = alloc_subkey( key, &token, current_time ))) return NULL;
if (options & REG_OPTION_CREATE_LINK) key->flags |= KEY_SYMLINK; if (options & REG_OPTION_VOLATILE) key->flags |= KEY_VOLATILE; @@ -895,14 +912,13 @@ static struct key *create_key_recursive( struct key *key, const struct unicode_s
if (token.len) { - if (!(key = alloc_subkey( key, &token, index, modif ))) return NULL; + if (!(key = alloc_subkey( key, &token, modif ))) return NULL; base = key; for (;;) { get_path_token( name, &token ); if (!token.len) break; - /* we know the index is always 0 in a new key */ - if (!(key = alloc_subkey( key, &token, 0, modif ))) + if (!(key = alloc_subkey( key, &token, modif ))) { unlink_named_object( &base->obj ); return NULL; @@ -1076,11 +1092,11 @@ static int rename_key( struct key *key, const struct unicode_str *new_name ) /* delete a key and its values */ static int delete_key( struct key *key, int recurse ) { - struct key *parent = get_parent( key ); + struct key *parent;
if (key->flags & KEY_DELETED) return 1;
- if (!parent) + if (!(parent = get_parent( key ))) { set_error( STATUS_ACCESS_DENIED ); return 0;