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/*
* Copyright (c) 2014, STMicroelectronics International N.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <tee/tee_obj.h>
#include <stdlib.h>
#include <tee_api_defines.h>
#include <mm/tee_mmu.h>
#include <tee/tee_fs.h>
#include <tee/tee_pobj.h>
#include <trace.h>
#include <tee/tee_svc_storage.h>
#include <tee/tee_svc_cryp.h>
void tee_obj_add(struct user_ta_ctx *utc, struct tee_obj *o)
{
TAILQ_INSERT_TAIL(&utc->objects, o, link);
}
TEE_Result tee_obj_get(struct user_ta_ctx *utc, uint32_t obj_id,
struct tee_obj **obj)
{
struct tee_obj *o;
TAILQ_FOREACH(o, &utc->objects, link) {
if (obj_id == (vaddr_t)o) {
*obj = o;
return TEE_SUCCESS;
}
}
return TEE_ERROR_BAD_PARAMETERS;
}
void tee_obj_close(struct user_ta_ctx *utc, struct tee_obj *o)
{
TAILQ_REMOVE(&utc->objects, o, link);
if ((o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT)) {
o->pobj->fops->close(&o->fh);
tee_pobj_release(o->pobj);
}
tee_obj_free(o);
}
void tee_obj_close_all(struct user_ta_ctx *utc)
{
struct tee_obj_head *objects = &utc->objects;
while (!TAILQ_EMPTY(objects))
tee_obj_close(utc, TAILQ_FIRST(objects));
}
TEE_Result tee_obj_verify(struct tee_ta_session *sess, struct tee_obj *o)
{
TEE_Result res;
const struct tee_file_operations *fops = o->pobj->fops;
struct tee_file_handle *fh = NULL;
if (!fops)
return TEE_ERROR_STORAGE_NOT_AVAILABLE;
res = fops->open(o->pobj, &fh);
if (res == TEE_ERROR_CORRUPT_OBJECT) {
EMSG("Object corrupt\n");
fops->remove(o->pobj);
tee_obj_close(to_user_ta_ctx(sess->ctx), o);
}
fops->close(&fh);
return res;
}
struct tee_obj *tee_obj_alloc(void)
{
return calloc(1, sizeof(struct tee_obj));
}
void tee_obj_free(struct tee_obj *o)
{
if (o) {
tee_obj_attr_free(o);
free(o->attr);
free(o);
}
}
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