2 * Server-side symbolic link object management
4 * Copyright (C) 2005 Vitaliy Margolen
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include "wine/port.h"
29 #include <sys/types.h>
32 #define WIN32_NO_STATUS
43 struct object obj; /* object header */
44 WCHAR *target; /* target of the symlink */
45 size_t len; /* target len in bytes */
48 static void symlink_dump( struct object *obj, int verbose );
49 static struct object *symlink_lookup_name( struct object *obj, struct unicode_str *name,
51 static void symlink_destroy( struct object *obj );
53 static const struct object_ops symlink_ops =
55 sizeof(struct symlink), /* size */
56 symlink_dump, /* dump */
57 no_add_queue, /* add_queue */
58 NULL, /* remove_queue */
61 no_signal, /* signal */
62 no_get_fd, /* get_fd */
63 no_map_access, /* map_access */
64 symlink_lookup_name, /* lookup_name */
65 no_close_handle, /* close_handle */
66 symlink_destroy /* destroy */
69 static void symlink_dump( struct object *obj, int verbose )
71 struct symlink *symlink = (struct symlink *)obj;
72 assert( obj->ops == &symlink_ops );
74 fprintf( stderr, "Symlink " );
75 dump_object_name( obj );
76 fprintf( stderr, " -> L\"" );
77 dump_strW( symlink->target, symlink->len / sizeof(WCHAR), stderr, "\"\"" );
78 fprintf( stderr, "\"\n" );
81 static struct object *symlink_lookup_name( struct object *obj, struct unicode_str *name,
84 struct symlink *symlink = (struct symlink *)obj;
85 struct unicode_str target_str, name_left;
86 struct object *target;
88 assert( obj->ops == &symlink_ops );
89 if (attr & OBJ_OPENLINK) return NULL;
91 target_str.str = symlink->target;
92 target_str.len = symlink->len;
93 if ((target = find_object_dir( NULL, &target_str, attr, &name_left )))
97 release_object( target );
99 set_error( STATUS_OBJECT_PATH_NOT_FOUND );
105 static void symlink_destroy( struct object *obj )
107 struct symlink *symlink = (struct symlink *)obj;
108 assert( obj->ops == &symlink_ops );
109 free( symlink->target );
112 struct symlink *create_symlink( struct directory *root, const struct unicode_str *name,
113 unsigned int attr, const struct unicode_str *target )
115 struct symlink *symlink;
119 set_error( STATUS_INVALID_PARAMETER );
122 if ((symlink = create_named_object_dir( root, name, attr, &symlink_ops )) &&
123 (get_error() != STATUS_OBJECT_NAME_EXISTS))
125 if ((symlink->target = memdup( target->str, target->len )))
126 symlink->len = target->len;
129 release_object( symlink );
137 /* create a symbolic link object */
138 DECL_HANDLER(create_symlink)
140 struct symlink *symlink;
141 struct unicode_str name, target;
142 struct directory *root = NULL;
144 if (req->name_len > get_req_data_size())
146 set_error( STATUS_INVALID_PARAMETER );
149 name.str = get_req_data();
150 target.str = name.str + req->name_len / sizeof(WCHAR);
151 name.len = (target.str - name.str) * sizeof(WCHAR);
152 target.len = ((get_req_data_size() - name.len) / sizeof(WCHAR)) * sizeof(WCHAR);
154 if (req->rootdir && !(root = get_directory_obj( current->process, req->rootdir, 0 )))
157 if ((symlink = create_symlink( root, &name, req->attributes, &target )))
159 reply->handle = alloc_handle( current->process, symlink, req->access, req->attributes );
160 release_object( symlink );
163 if (root) release_object( root );
166 /* open a symbolic link object */
167 DECL_HANDLER(open_symlink)
169 struct unicode_str name;
170 struct directory *root = NULL;
171 struct symlink *symlink;
173 get_req_unicode_str( &name );
174 if (req->rootdir && !(root = get_directory_obj( current->process, req->rootdir, 0 )))
177 if ((symlink = open_object_dir( root, &name, req->attributes | OBJ_OPENLINK, &symlink_ops )))
179 reply->handle = alloc_handle( current->process, &symlink->obj, req->access, req->attributes );
180 release_object( symlink );
183 if (root) release_object( root );
186 /* query a symbolic link object */
187 DECL_HANDLER(query_symlink)
189 struct symlink *symlink;
191 symlink = (struct symlink *)get_handle_obj( current->process, req->handle,
192 SYMBOLIC_LINK_QUERY, &symlink_ops );
193 if (!symlink) return;
195 if (get_reply_max_size() < symlink->len)
196 set_error( STATUS_BUFFER_TOO_SMALL );
198 set_reply_data( symlink->target, symlink->len );
199 release_object( symlink );