1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (c) 2014, STMicroelectronics International N.V. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <tee/tee_obj.h> 30 31 #include <stdlib.h> 32 #include <tee_api_defines.h> 33 #include <mm/tee_mmu.h> 34 #include <tee/tee_fs.h> 35 #include <tee/tee_pobj.h> 36 #include <trace.h> 37 #include <tee/tee_svc_storage.h> 38 #include <tee/tee_svc_cryp.h> 39 40 void tee_obj_add(struct user_ta_ctx *utc, struct tee_obj *o) 41 { 42 TAILQ_INSERT_TAIL(&utc->objects, o, link); 43 } 44 45 TEE_Result tee_obj_get(struct user_ta_ctx *utc, uint32_t obj_id, 46 struct tee_obj **obj) 47 { 48 struct tee_obj *o; 49 50 TAILQ_FOREACH(o, &utc->objects, link) { 51 if (obj_id == (vaddr_t)o) { 52 *obj = o; 53 return TEE_SUCCESS; 54 } 55 } 56 return TEE_ERROR_BAD_PARAMETERS; 57 } 58 59 void tee_obj_close(struct user_ta_ctx *utc, struct tee_obj *o) 60 { 61 TAILQ_REMOVE(&utc->objects, o, link); 62 63 if ((o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT)) { 64 o->pobj->fops->close(&o->fh); 65 tee_pobj_release(o->pobj); 66 } 67 68 tee_obj_free(o); 69 } 70 71 void tee_obj_close_all(struct user_ta_ctx *utc) 72 { 73 struct tee_obj_head *objects = &utc->objects; 74 75 while (!TAILQ_EMPTY(objects)) 76 tee_obj_close(utc, TAILQ_FIRST(objects)); 77 } 78 79 TEE_Result tee_obj_verify(struct tee_ta_session *sess, struct tee_obj *o) 80 { 81 TEE_Result res; 82 const struct tee_file_operations *fops = o->pobj->fops; 83 struct tee_file_handle *fh = NULL; 84 85 if (!fops) 86 return TEE_ERROR_STORAGE_NOT_AVAILABLE; 87 88 res = fops->open(o->pobj, NULL, &fh); 89 if (res == TEE_ERROR_CORRUPT_OBJECT) { 90 EMSG("Object corrupt\n"); 91 fops->remove(o->pobj); 92 tee_obj_close(to_user_ta_ctx(sess->ctx), o); 93 } 94 95 fops->close(&fh); 96 return res; 97 } 98 99 struct tee_obj *tee_obj_alloc(void) 100 { 101 return calloc(1, sizeof(struct tee_obj)); 102 } 103 104 void tee_obj_free(struct tee_obj *o) 105 { 106 if (o) { 107 tee_obj_attr_free(o); 108 free(o->attr); 109 free(o); 110 } 111 } 112