diff options
Diffstat (limited to 'libhurd-cap-server/obj-copy-out.c')
| -rw-r--r-- | libhurd-cap-server/obj-copy-out.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/libhurd-cap-server/obj-copy-out.c b/libhurd-cap-server/obj-copy-out.c deleted file mode 100644 index c0e8b93..0000000 --- a/libhurd-cap-server/obj-copy-out.c +++ /dev/null @@ -1,121 +0,0 @@ -/* obj-copy-out.c - Copy out a capability to a client. - Copyright (C) 2004 Free Software Foundation, Inc. - Written by Marcus Brinkmann <marcus@gnu.org> - - This file is part of the GNU Hurd. - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this program; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#if HAVE_CONFIG_H -#include <config.h> -#endif - -#include <errno.h> -#include <pthread.h> -#include <stdlib.h> - -#include "cap-server-intern.h" - - -/* Copy out a capability for the capability OBJ to the user CLIENT. - Returns the capability ID (valid only for this user) in *R_ID, or - an error. OBJ must be locked. Note: No internal reference for - this capability is allocated for the caller. */ -error_t -_hurd_cap_obj_copy_out (hurd_cap_obj_t obj, hurd_cap_bucket_t bucket, - _hurd_cap_client_t client, _hurd_cap_id_t *r_id) -{ - void *new_entry; - _hurd_cap_obj_entry_t entry; - - pthread_mutex_lock (&client->lock); - entry = (_hurd_cap_obj_entry_t) hurd_ihash_find (&client->caps_reverse, - (hurd_ihash_key_t) obj); - - if (entry) - { - entry->external_refs++; - *r_id = entry->id; - pthread_mutex_unlock (&client->lock); - return 0; - } - else - { - _hurd_cap_obj_entry_t entry_check; - error_t err; - - pthread_mutex_unlock (&client->lock); - err = hurd_slab_alloc (&_hurd_cap_obj_entry_space, &new_entry); - if (err) - return err; - entry = new_entry; - - entry->cap_obj = obj; - /* ID is filled in when adding the object to the table. */ - /* CLIENT_ITEM is filled after the object has been entered. */ - /* DEAD is 0 for initialized objects. */ - /* INTERNAL_REFS is 1 for initialized objects. */ - /* EXTERNAL_REFS is 1 for initialized objects. */ - - pthread_mutex_lock (&client->lock); - entry_check = hurd_ihash_find (&client->caps_reverse, - (hurd_ihash_key_t) obj); - if (entry_check) - { - /* Somebody else was faster. */ - entry_check->external_refs++; - *r_id = entry_check->id; - pthread_mutex_unlock (&client->lock); - hurd_slab_dealloc (&_hurd_cap_obj_entry_space, entry); - return 0; - } - - /* Add the entry to the cap table of the client. */ - err = hurd_table_enter (&client->caps, &entry, &entry->id); - if (err) - { - pthread_mutex_unlock (&client->lock); - hurd_slab_dealloc (&_hurd_cap_obj_entry_space, entry); - return err; - } - err = hurd_ihash_add (&client->caps_reverse, - (hurd_ihash_key_t) obj, entry); - if (err) - { - hurd_table_remove (&client->caps, entry->id); - pthread_mutex_unlock (&client->lock); - hurd_slab_dealloc (&_hurd_cap_obj_entry_space, entry); - return err; - } - - *r_id = entry->id; - pthread_mutex_unlock (&client->lock); - - /* Add the object to the list. */ - _hurd_cap_list_item_add (&obj->clients, &entry->client_item); - - /* Add a reference for the internal reference of the capability - entry to the capability object. */ - obj->refs++; - - /* FIXME: Should probably use spin lock here, or so. */ - pthread_mutex_lock (&bucket->lock); - bucket->nr_caps++; - pthread_mutex_unlock (&bucket->lock); - - return 0; - } -} |