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