blob: f78e17f78ecf70c04906533921a342f69a82c6dc [file] [log] [blame]
/*
* Copyright (c) 2017 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <kernel.h>
#include <syscall_handler.h>
static struct _k_object *validate_any_object(void *obj)
{
struct _k_object *ko;
int ret;
ko = _k_object_find(obj);
/* This can be any kernel object and it doesn't have to be
* initialized
*/
ret = _k_object_validate(ko, K_OBJ_ANY, _OBJ_INIT_ANY);
if (ret) {
#ifdef CONFIG_PRINTK
_dump_object_error(ret, obj, ko, K_OBJ_ANY);
#endif
return NULL;
}
return ko;
}
/* Normally these would be included in userspace.c, but the way
* syscall_dispatch.c declares weak handlers results in build errors if these
* are located in userspace.c. Just put in a separate file.
*
* To avoid double _k_object_find() lookups, we don't call the implementation
* function, but call a level deeper.
*/
_SYSCALL_HANDLER(k_object_access_grant, object, thread)
{
struct _k_object *ko;
_SYSCALL_OBJ_INIT(thread, K_OBJ_THREAD);
ko = validate_any_object((void *)object);
_SYSCALL_VERIFY_MSG(ko, "object %p access denied", (void *)object);
_thread_perms_set(ko, (struct k_thread *)thread);
return 0;
}
_SYSCALL_HANDLER(k_object_access_revoke, object, thread)
{
struct _k_object *ko;
_SYSCALL_OBJ_INIT(thread, K_OBJ_THREAD);
ko = validate_any_object((void *)object);
_SYSCALL_VERIFY_MSG(ko, "object %p access denied", (void *)object);
_thread_perms_clear(ko, (struct k_thread *)thread);
return 0;
}