1 // SPDX-License-Identifier: BSD-2-Clause
2 /*
3 * Copyright (c) 2014, STMicroelectronics International N.V.
4 */
5
6 #include <mm/vm.h>
7 #include <stdlib.h>
8 #include <tee_api_defines.h>
9 #include <tee/tee_fs.h>
10 #include <tee/tee_obj.h>
11 #include <tee/tee_pobj.h>
12 #include <tee/tee_svc_cryp.h>
13 #include <tee/tee_svc_storage.h>
14 #include <trace.h>
15
tee_obj_add(struct user_ta_ctx * utc,struct tee_obj * o)16 void tee_obj_add(struct user_ta_ctx *utc, struct tee_obj *o)
17 {
18 TAILQ_INSERT_TAIL(&utc->objects, o, link);
19 }
20
tee_obj_get(struct user_ta_ctx * utc,vaddr_t obj_id,struct tee_obj ** obj)21 TEE_Result tee_obj_get(struct user_ta_ctx *utc, vaddr_t obj_id,
22 struct tee_obj **obj)
23 {
24 struct tee_obj *o;
25
26 TAILQ_FOREACH(o, &utc->objects, link) {
27 if (obj_id == (vaddr_t)o) {
28 *obj = o;
29 return TEE_SUCCESS;
30 }
31 }
32 return TEE_ERROR_BAD_STATE;
33 }
34
tee_obj_close(struct user_ta_ctx * utc,struct tee_obj * o)35 void tee_obj_close(struct user_ta_ctx *utc, struct tee_obj *o)
36 {
37 TAILQ_REMOVE(&utc->objects, o, link);
38
39 if ((o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT)) {
40 o->pobj->fops->close(&o->fh);
41 tee_pobj_release(o->pobj);
42 }
43
44 tee_obj_free(o);
45 }
46
tee_obj_close_all(struct user_ta_ctx * utc)47 void tee_obj_close_all(struct user_ta_ctx *utc)
48 {
49 struct tee_obj_head *objects = &utc->objects;
50
51 while (!TAILQ_EMPTY(objects))
52 tee_obj_close(utc, TAILQ_FIRST(objects));
53 }
54
tee_obj_verify(struct tee_ta_session * sess,struct tee_obj * o)55 TEE_Result tee_obj_verify(struct tee_ta_session *sess, struct tee_obj *o)
56 {
57 TEE_Result res;
58 const struct tee_file_operations *fops = o->pobj->fops;
59 struct tee_file_handle *fh = NULL;
60
61 if (!fops)
62 return TEE_ERROR_STORAGE_NOT_AVAILABLE;
63
64 res = fops->open(o->pobj, NULL, &fh);
65 if (res == TEE_ERROR_CORRUPT_OBJECT) {
66 EMSG("Object corrupt");
67 fops->remove(o->pobj);
68 tee_obj_close(to_user_ta_ctx(sess->ts_sess.ctx), o);
69 }
70
71 fops->close(&fh);
72 return res;
73 }
74
tee_obj_alloc(void)75 struct tee_obj *tee_obj_alloc(void)
76 {
77 return calloc(1, sizeof(struct tee_obj));
78 }
79
tee_obj_free(struct tee_obj * o)80 void tee_obj_free(struct tee_obj *o)
81 {
82 if (o) {
83 tee_obj_attr_free(o);
84 free(o->attr);
85 free(o);
86 }
87 }
88