cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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base.c (2229B)

      1/*
      2 * QEMU authorization framework base class
      3 *
      4 * Copyright (c) 2018 Red Hat, Inc.
      5 *
      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.
     10 *
     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.
     15 *
     16 * You should have received a copy of the GNU Lesser General Public
     17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
     18 *
     19 */
     20
     21#include "qemu/osdep.h"
     22#include "authz/base.h"
     23#include "qemu/module.h"
     24#include "trace.h"
     25
     26bool qauthz_is_allowed(QAuthZ *authz,
     27                       const char *identity,
     28                       Error **errp)
     29{
     30    QAuthZClass *cls = QAUTHZ_GET_CLASS(authz);
     31    bool allowed;
     32
     33    allowed = cls->is_allowed(authz, identity, errp);
     34    trace_qauthz_is_allowed(authz, identity, allowed);
     35
     36    return allowed;
     37}
     38
     39
     40bool qauthz_is_allowed_by_id(const char *authzid,
     41                             const char *identity,
     42                             Error **errp)
     43{
     44    QAuthZ *authz;
     45    Object *obj;
     46    Object *container;
     47
     48    container = object_get_objects_root();
     49    obj = object_resolve_path_component(container,
     50                                        authzid);
     51    if (!obj) {
     52        error_setg(errp, "Cannot find QAuthZ object ID %s",
     53                   authzid);
     54        return false;
     55    }
     56
     57    if (!object_dynamic_cast(obj, TYPE_QAUTHZ)) {
     58        error_setg(errp, "Object '%s' is not a QAuthZ subclass",
     59                   authzid);
     60        return false;
     61    }
     62
     63    authz = QAUTHZ(obj);
     64
     65    return qauthz_is_allowed(authz, identity, errp);
     66}
     67
     68
     69static const TypeInfo authz_info = {
     70    .parent = TYPE_OBJECT,
     71    .name = TYPE_QAUTHZ,
     72    .instance_size = sizeof(QAuthZ),
     73    .class_size = sizeof(QAuthZClass),
     74    .abstract = true,
     75};
     76
     77static void qauthz_register_types(void)
     78{
     79    type_register_static(&authz_info);
     80}
     81
     82type_init(qauthz_register_types)
     83