/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * The ioctl interface for cryptographic commands. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Locking notes: * * crypto_lock protects the global array of minor structures. It * also protects the cm_refcnt member of each of these structures. * The crypto_cv is used to signal decrements in the cm_refcnt, * and is used with the global crypto_lock. * * Other fields in the minor structure are protected by the * cm_lock member of the minor structure. */ /* * DDI entry points. */ static int crypto_attach(dev_info_t *, ddi_attach_cmd_t); static int crypto_detach(dev_info_t *, ddi_detach_cmd_t); static int crypto_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); static int crypto_open(dev_t *, int, int, cred_t *); static int crypto_close(dev_t, int, int, cred_t *); static int crypto_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); static int cipher_init(dev_t, caddr_t, int, int (*)(crypto_provider_t, crypto_session_id_t, crypto_mechanism_t *, crypto_key_t *, crypto_ctx_template_t, crypto_context_t *, crypto_call_req_t *)); static int common_digest(dev_t, caddr_t, int, int (*)(crypto_context_t, crypto_data_t *, crypto_data_t *, crypto_call_req_t *)); static int cipher(dev_t, caddr_t, int, int (*)(crypto_context_t, crypto_data_t *, crypto_data_t *, crypto_call_req_t *)); static int cipher_update(dev_t, caddr_t, int, int (*)(crypto_context_t, crypto_data_t *, crypto_data_t *, crypto_call_req_t *)); static int common_final(dev_t, caddr_t, int, int (*)(crypto_context_t, crypto_data_t *, crypto_call_req_t *)); static int sign_verify_init(dev_t, caddr_t, int, int (*)(crypto_provider_t, crypto_session_id_t, crypto_mechanism_t *, crypto_key_t *, crypto_ctx_template_t, crypto_context_t *, crypto_call_req_t *)); static int sign_verify_update(dev_t dev, caddr_t arg, int mode, int (*)(crypto_context_t, crypto_data_t *, crypto_call_req_t *)); static void crypto_initialize_rctl(void); static void crypto_release_provider_session(crypto_minor_t *, crypto_provider_session_t *); static int crypto_buffer_check(size_t, kproject_t **); static int crypto_free_find_ctx(crypto_session_data_t *); static int crypto_get_provider_list(crypto_minor_t *, uint_t *, crypto_provider_entry_t **, boolean_t); /* number of minor numbers to allocate at a time */ #define CRYPTO_MINOR_CHUNK 16 /* * There are two limits associated with kernel memory. The first, * CRYPTO_MAX_BUFFER_LEN, is the maximum number of bytes that can be * allocated for a single copyin/copyout buffer. The second limit is * the total number of bytes that can be allocated by a process * for copyin/copyout buffers. The latter is enforced by the * project.max-crypto-memory resource control. */ #define CRYPTO_MAX_BUFFER_LEN (2 * 1024 * 1024) #define CRYPTO_MAX_FIND_COUNT 512 /* * When a mechanism parameter length is less than CRYPTO_DEFERRED_LIMIT * bytes, then the length is added to the next resource control check. */ #define CRYPTO_DEFERRED_LIMIT 100 /* The session table grows by CRYPTO_SESSION_CHUNK increments */ #define CRYPTO_SESSION_CHUNK 100 size_t crypto_max_buffer_len = CRYPTO_MAX_BUFFER_LEN; #define INIT_RAW_CRYPTO_DATA(data, len) \ (data).cd_format = CRYPTO_DATA_RAW; \ (data).cd_raw.iov_base = kmem_alloc(len, KM_SLEEP); \ (data).cd_raw.iov_len = len; \ (data).cd_offset = 0; \ (data).cd_length = len; static struct kmem_cache *crypto_session_cache; static crypto_minor_t **crypto_minors = NULL; static dev_info_t *crypto_dip = NULL; static minor_t crypto_minor_chunk = CRYPTO_MINOR_CHUNK; static minor_t crypto_minors_table_count = 0; /* * Minors are started from 1 because vmem_alloc() * returns 0 in case of failure. */ static vmem_t *crypto_arena = NULL; /* Arena for device minors */ static minor_t crypto_minors_count = 0; static kmutex_t crypto_lock; static kmutex_t crypto_rctl_lock; static kcondvar_t crypto_cv; #define RETURN_LIST B_TRUE #define DONT_RETURN_LIST B_FALSE #define CRYPTO_OPS_OFFSET(f) offsetof(crypto_ops_t, co_##f) #define CRYPTO_RANDOM_OFFSET(f) offsetof(crypto_random_number_ops_t, f) #define CRYPTO_SESSION_OFFSET(f) offsetof(crypto_session_ops_t, f) #define CRYPTO_OBJECT_OFFSET(f) offsetof(crypto_object_ops_t, f) #define CRYPTO_PROVIDER_OFFSET(f) \ offsetof(crypto_provider_management_ops_t, f) #define CRYPTO_CANCEL_CTX(spp) { \ crypto_cancel_ctx(*(spp)); \ *(spp) = NULL; \ } #define CRYPTO_CANCEL_ALL_CTX(sp) { \ if ((sp)->sd_digest_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_digest_ctx); \ (sp)->sd_digest_ctx = NULL; \ } \ if ((sp)->sd_encr_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_encr_ctx); \ (sp)->sd_encr_ctx = NULL; \ } \ if ((sp)->sd_decr_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_decr_ctx); \ (sp)->sd_decr_ctx = NULL; \ } \ if ((sp)->sd_sign_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_sign_ctx); \ (sp)->sd_sign_ctx = NULL; \ } \ if ((sp)->sd_verify_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_verify_ctx); \ (sp)->sd_verify_ctx = NULL; \ } \ if ((sp)->sd_sign_recover_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_sign_recover_ctx); \ (sp)->sd_sign_recover_ctx = NULL; \ } \ if ((sp)->sd_verify_recover_ctx != NULL) { \ crypto_cancel_ctx((sp)->sd_verify_recover_ctx); \ (sp)->sd_verify_recover_ctx = NULL; \ } \ } #define CRYPTO_DECREMENT_RCTL(val, projp) { \ ASSERT(projp != NULL); \ (projp)->kpj_data.kpd_crypto_mem -= (val); \ project_rele(projp); \ } /* * Module linkage. */ static struct cb_ops cbops = { crypto_open, /* cb_open */ crypto_close, /* cb_close */ nodev, /* cb_strategy */ nodev, /* cb_print */ nodev, /* cb_dump */ nodev, /* cb_read */ nodev, /* cb_write */ crypto_ioctl, /* cb_ioctl */ nodev, /* cb_devmap */ nodev, /* cb_mmap */ nodev, /* cb_segmap */ nochpoll, /* cb_chpoll */ ddi_prop_op, /* cb_prop_op */ NULL, /* cb_streamtab */ D_MP, /* cb_flag */ CB_REV, /* cb_rev */ nodev, /* cb_aread */ nodev, /* cb_awrite */ }; static struct dev_ops devops = { DEVO_REV, /* devo_rev */ 0, /* devo_refcnt */ crypto_getinfo, /* devo_getinfo */ nulldev, /* devo_identify */ nulldev, /* devo_probe */ crypto_attach, /* devo_attach */ crypto_detach, /* devo_detach */ nodev, /* devo_reset */ &cbops, /* devo_cb_ops */ NULL, /* devo_bus_ops */ NULL, /* devo_power */ }; static struct modldrv modldrv = { &mod_driverops, /* drv_modops */ "Cryptographic Library Interface v%I%", /* drv_linkinfo */ &devops, }; static struct modlinkage modlinkage = { MODREV_1, /* ml_rev */ &modldrv, /* ml_linkage */ NULL }; /* * DDI entry points. */ int _init(void) { return (mod_install(&modlinkage)); } int _fini(void) { return (mod_remove(&modlinkage)); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } /* ARGSUSED */ static int crypto_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) { switch (cmd) { case DDI_INFO_DEVT2DEVINFO: *result = crypto_dip; return (DDI_SUCCESS); case DDI_INFO_DEVT2INSTANCE: *result = (void *)0; return (DDI_SUCCESS); } return (DDI_FAILURE); } static int crypto_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) { if (cmd != DDI_ATTACH) { return (DDI_FAILURE); } if (ddi_get_instance(dip) != 0) { /* we only allow instance 0 to attach */ return (DDI_FAILURE); } crypto_session_cache = kmem_cache_create("crypto_session_cache", sizeof (crypto_session_data_t), 0, NULL, NULL, NULL, NULL, NULL, 0); if (crypto_session_cache == NULL) return (DDI_FAILURE); /* create the minor node */ if (ddi_create_minor_node(dip, "crypto", S_IFCHR, 0, DDI_PSEUDO, 0) != DDI_SUCCESS) { kmem_cache_destroy(crypto_session_cache); crypto_session_cache = NULL; cmn_err(CE_WARN, "crypto_attach: failed creating minor node"); ddi_remove_minor_node(dip, NULL); return (DDI_FAILURE); } mutex_init(&crypto_lock, NULL, MUTEX_DRIVER, NULL); mutex_init(&crypto_rctl_lock, NULL, MUTEX_DRIVER, NULL); cv_init(&crypto_cv, NULL, CV_DRIVER, NULL); crypto_dip = dip; /* allocate integer space for minor numbers */ crypto_arena = vmem_create("crypto", (void *)1, CRYPTO_MINOR_CHUNK, 1, NULL, NULL, NULL, 0, VM_SLEEP | VMC_IDENTIFIER); return (DDI_SUCCESS); } static int crypto_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) { minor_t i; if (cmd != DDI_DETACH) return (DDI_FAILURE); /* check if device is open */ mutex_enter(&crypto_lock); for (i = 0; i < crypto_minors_table_count; i++) { if (crypto_minors[i] != NULL) { mutex_exit(&crypto_lock); return (DDI_FAILURE); } } mutex_exit(&crypto_lock); crypto_dip = NULL; ddi_remove_minor_node(dip, NULL); kmem_cache_destroy(crypto_session_cache); crypto_session_cache = NULL; kmem_free(crypto_minors, sizeof (crypto_minor_t *) * crypto_minors_table_count); crypto_minors = NULL; crypto_minors_table_count = 0; mutex_destroy(&crypto_lock); mutex_destroy(&crypto_rctl_lock); cv_destroy(&crypto_cv); vmem_destroy(crypto_arena); crypto_arena = NULL; return (DDI_SUCCESS); } /* ARGSUSED */ static int crypto_open(dev_t *devp, int flag, int otyp, cred_t *credp) { crypto_minor_t *cm = NULL; minor_t mn; if (otyp != OTYP_CHR) return (ENXIO); if (crypto_dip == NULL) return (ENXIO); /* exclusive opens are not supported */ if (flag & FEXCL) return (ENOTSUP); mutex_enter(&crypto_lock); again: /* grow the minors table if needed */ if (crypto_minors_count >= crypto_minors_table_count) { crypto_minor_t **newtable; minor_t chunk = crypto_minor_chunk; minor_t saved_count; size_t new_size; ulong_t big_count; big_count = crypto_minors_count + chunk; if (big_count > MAXMIN) { mutex_exit(&crypto_lock); return (ENOMEM); } saved_count = crypto_minors_table_count; new_size = sizeof (crypto_minor_t *) * (crypto_minors_table_count + chunk); mutex_exit(&crypto_lock); newtable = kmem_zalloc(new_size, KM_SLEEP); mutex_enter(&crypto_lock); /* * Check if table grew while we were sleeping. * The minors table never shrinks. */ if (crypto_minors_table_count > saved_count) { kmem_free(newtable, new_size); goto again; } /* we assume that bcopy() will return if count is 0 */ bcopy(crypto_minors, newtable, sizeof (crypto_minor_t *) * crypto_minors_table_count); kmem_free(crypto_minors, sizeof (crypto_minor_t *) * crypto_minors_table_count); /* grow the minors number space */ if (crypto_minors_table_count != 0) { (void) vmem_add(crypto_arena, (void *)(uintptr_t)(crypto_minors_table_count + 1), crypto_minor_chunk, VM_SLEEP); } crypto_minors = newtable; crypto_minors_table_count += chunk; } mutex_exit(&crypto_lock); /* allocate a new minor number starting with 1 */ mn = (minor_t)(uintptr_t)vmem_alloc(crypto_arena, 1, VM_SLEEP); cm = kmem_zalloc(sizeof (crypto_minor_t), KM_SLEEP); mutex_init(&cm->cm_lock, NULL, MUTEX_DRIVER, NULL); cv_init(&cm->cm_cv, NULL, CV_DRIVER, NULL); mutex_enter(&crypto_lock); crypto_minors[mn - 1] = cm; crypto_minors_count++; mutex_exit(&crypto_lock); *devp = makedevice(getmajor(*devp), mn); return (0); } /* ARGSUSED */ static int crypto_close(dev_t dev, int flag, int otyp, cred_t *credp) { crypto_minor_t *cm = NULL; crypto_session_data_t *sp; minor_t mn = getminor(dev); uint_t i; mutex_enter(&crypto_lock); if (mn > crypto_minors_table_count) { mutex_exit(&crypto_lock); cmn_err(CE_WARN, "crypto_close: bad minor (too big) %d", mn); return (ENODEV); } while (((cm = crypto_minors[mn - 1]) != NULL) && (cm->cm_refcnt > 0)) { cv_wait(&crypto_cv, &crypto_lock); } if (cm == NULL) { mutex_exit(&crypto_lock); cmn_err(CE_WARN, "crypto_close: duplicate close of minor %d", getminor(dev)); return (ENODEV); } /* take it out of the global table */ crypto_minors[mn - 1] = NULL; crypto_minors_count--; vmem_free(crypto_arena, (void *)(uintptr_t)mn, 1); mutex_enter(&cm->cm_lock); mutex_exit(&crypto_lock); /* free all session table entries starting with 1 */ for (i = 1; i < cm->cm_session_table_count; i++) { if (cm->cm_session_table[i] == NULL) continue; sp = cm->cm_session_table[i]; ASSERT((sp->sd_flags & CRYPTO_SESSION_IS_BUSY) == 0); if (sp->sd_find_init_cookie != NULL) { (void) crypto_free_find_ctx(sp); } crypto_release_provider_session(cm, sp->sd_provider_session); KCF_PROV_REFRELE(sp->sd_provider); CRYPTO_CANCEL_ALL_CTX(sp); mutex_destroy(&sp->sd_lock); cv_destroy(&sp->sd_cv); kmem_cache_free(crypto_session_cache, sp); cm->cm_session_table[i] = NULL; } /* free the session table */ if (cm->cm_session_table != NULL && cm->cm_session_table_count > 0) kmem_free(cm->cm_session_table, cm->cm_session_table_count * sizeof (void *)); if (cm->cm_session_table_count != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(cm->cm_session_table_count * sizeof (void *), cm->cm_projp); mutex_exit(&crypto_rctl_lock); } kcf_free_provider_tab(cm->cm_provider_count, cm->cm_provider_array); mutex_destroy(&cm->cm_lock); cv_destroy(&cm->cm_cv); kmem_free(cm, sizeof (crypto_minor_t)); return (0); } static crypto_minor_t * crypto_hold_minor(minor_t minor) { crypto_minor_t *cm = NULL; mutex_enter(&crypto_lock); if ((minor <= crypto_minors_table_count) && ((cm = crypto_minors[minor - 1]) != NULL)) { cm->cm_refcnt++; } mutex_exit(&crypto_lock); return (cm); } static void crypto_release_minor(crypto_minor_t *cm) { mutex_enter(&crypto_lock); cm->cm_refcnt--; if (cm->cm_refcnt == 0) { cv_broadcast(&crypto_cv); } mutex_exit(&crypto_lock); } /* * */ static void crypto_build_function_list(crypto_function_list_t *fl, kcf_provider_desc_t *pd) { crypto_ops_t *ops; crypto_digest_ops_t *digest_ops; crypto_cipher_ops_t *cipher_ops; crypto_mac_ops_t *mac_ops; crypto_sign_ops_t *sign_ops; crypto_verify_ops_t *verify_ops; crypto_dual_ops_t *dual_ops; crypto_random_number_ops_t *random_number_ops; crypto_session_ops_t *session_ops; crypto_object_ops_t *object_ops; crypto_key_ops_t *key_ops; crypto_provider_management_ops_t *provider_ops; if ((ops = pd->pd_ops_vector) == NULL) return; if ((digest_ops = ops->co_digest_ops) != NULL) { if (digest_ops->digest_init != NULL) fl->fl_digest_init = B_TRUE; if (digest_ops->digest != NULL) fl->fl_digest = B_TRUE; if (digest_ops->digest_update != NULL) fl->fl_digest_update = B_TRUE; if (digest_ops->digest_key != NULL) fl->fl_digest_key = B_TRUE; if (digest_ops->digest_final != NULL) fl->fl_digest_final = B_TRUE; } if ((cipher_ops = ops->co_cipher_ops) != NULL) { if (cipher_ops->encrypt_init != NULL) fl->fl_encrypt_init = B_TRUE; if (cipher_ops->encrypt != NULL) fl->fl_encrypt = B_TRUE; if (cipher_ops->encrypt_update != NULL) fl->fl_encrypt_update = B_TRUE; if (cipher_ops->encrypt_final != NULL) fl->fl_encrypt_final = B_TRUE; if (cipher_ops->decrypt_init != NULL) fl->fl_decrypt_init = B_TRUE; if (cipher_ops->decrypt != NULL) fl->fl_decrypt = B_TRUE; if (cipher_ops->decrypt_update != NULL) fl->fl_decrypt_update = B_TRUE; if (cipher_ops->decrypt_final != NULL) fl->fl_decrypt_final = B_TRUE; } if ((mac_ops = ops->co_mac_ops) != NULL) { if (mac_ops->mac_init != NULL) fl->fl_mac_init = B_TRUE; if (mac_ops->mac != NULL) fl->fl_mac = B_TRUE; if (mac_ops->mac_update != NULL) fl->fl_mac_update = B_TRUE; if (mac_ops->mac_final != NULL) fl->fl_mac_final = B_TRUE; } if ((sign_ops = ops->co_sign_ops) != NULL) { if (sign_ops->sign_init != NULL) fl->fl_sign_init = B_TRUE; if (sign_ops->sign != NULL) fl->fl_sign = B_TRUE; if (sign_ops->sign_update != NULL) fl->fl_sign_update = B_TRUE; if (sign_ops->sign_final != NULL) fl->fl_sign_final = B_TRUE; if (sign_ops->sign_recover_init != NULL) fl->fl_sign_recover_init = B_TRUE; if (sign_ops->sign_recover != NULL) fl->fl_sign_recover = B_TRUE; } if ((verify_ops = ops->co_verify_ops) != NULL) { if (verify_ops->verify_init != NULL) fl->fl_verify_init = B_TRUE; if (verify_ops->verify != NULL) fl->fl_verify = B_TRUE; if (verify_ops->verify_update != NULL) fl->fl_verify_update = B_TRUE; if (verify_ops->verify_final != NULL) fl->fl_verify_final = B_TRUE; if (verify_ops->verify_recover_init != NULL) fl->fl_verify_recover_init = B_TRUE; if (verify_ops->verify_recover != NULL) fl->fl_verify_recover = B_TRUE; } if ((dual_ops = ops->co_dual_ops) != NULL) { if (dual_ops->digest_encrypt_update != NULL) fl->fl_digest_encrypt_update = B_TRUE; if (dual_ops->decrypt_digest_update != NULL) fl->fl_decrypt_digest_update = B_TRUE; if (dual_ops->sign_encrypt_update != NULL) fl->fl_sign_encrypt_update = B_TRUE; if (dual_ops->decrypt_verify_update != NULL) fl->fl_decrypt_verify_update = B_TRUE; } if ((random_number_ops = ops->co_random_ops) != NULL) { if (random_number_ops->seed_random != NULL) fl->fl_seed_random = B_TRUE; if (random_number_ops->generate_random != NULL) fl->fl_generate_random = B_TRUE; } if ((session_ops = ops->co_session_ops) != NULL) { if (session_ops->session_open != NULL) fl->fl_session_open = B_TRUE; if (session_ops->session_close != NULL) fl->fl_session_close = B_TRUE; if (session_ops->session_login != NULL) fl->fl_session_login = B_TRUE; if (session_ops->session_logout != NULL) fl->fl_session_logout = B_TRUE; } if ((object_ops = ops->co_object_ops) != NULL) { if (object_ops->object_create != NULL) fl->fl_object_create = B_TRUE; if (object_ops->object_copy != NULL) fl->fl_object_copy = B_TRUE; if (object_ops->object_destroy != NULL) fl->fl_object_destroy = B_TRUE; if (object_ops->object_get_size != NULL) fl->fl_object_get_size = B_TRUE; if (object_ops->object_get_attribute_value != NULL) fl->fl_object_get_attribute_value = B_TRUE; if (object_ops->object_set_attribute_value != NULL) fl->fl_object_set_attribute_value = B_TRUE; if (object_ops->object_find_init != NULL) fl->fl_object_find_init = B_TRUE; if (object_ops->object_find != NULL) fl->fl_object_find = B_TRUE; if (object_ops->object_find_final != NULL) fl->fl_object_find_final = B_TRUE; } if ((key_ops = ops->co_key_ops) != NULL) { if (key_ops->key_generate != NULL) fl->fl_key_generate = B_TRUE; if (key_ops->key_generate_pair != NULL) fl->fl_key_generate_pair = B_TRUE; if (key_ops->key_wrap != NULL) fl->fl_key_wrap = B_TRUE; if (key_ops->key_unwrap != NULL) fl->fl_key_unwrap = B_TRUE; if (key_ops->key_derive != NULL) fl->fl_key_derive = B_TRUE; } if ((provider_ops = ops->co_provider_ops) != NULL) { if (provider_ops->init_token != NULL) fl->fl_init_token = B_TRUE; if (provider_ops->init_pin != NULL) fl->fl_init_pin = B_TRUE; if (provider_ops->set_pin != NULL) fl->fl_set_pin = B_TRUE; } } /* ARGSUSED */ static int get_function_list(dev_t dev, caddr_t arg, int mode, int *rval) { crypto_get_function_list_t get_function_list; crypto_minor_t *cm; crypto_provider_id_t provider_id; crypto_function_list_t *fl; kcf_provider_desc_t *provider; int rv; if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "get_function_list: failed holding minor"); return (ENXIO); } if (copyin(arg, &get_function_list, sizeof (get_function_list)) != 0) { crypto_release_minor(cm); return (EFAULT); } /* initialize provider_array */ if (cm->cm_provider_array == NULL) { rv = crypto_get_provider_list(cm, NULL, NULL, DONT_RETURN_LIST); if (rv != CRYPTO_SUCCESS) { goto release_minor; } } provider_id = get_function_list.fl_provider_id; mutex_enter(&cm->cm_lock); /* index must be less than count of providers */ if (provider_id >= cm->cm_provider_count) { mutex_exit(&cm->cm_lock); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } ASSERT(cm->cm_provider_array != NULL); provider = cm->cm_provider_array[provider_id]; mutex_exit(&cm->cm_lock); fl = &get_function_list.fl_list; bzero(fl, sizeof (crypto_function_list_t)); if (provider->pd_prov_type != CRYPTO_LOGICAL_PROVIDER) { crypto_build_function_list(fl, provider); } else { kcf_provider_desc_t *prev = NULL, *pd; mutex_enter(&provider->pd_lock); while (kcf_get_next_logical_provider_member(provider, prev, &pd)) { prev = pd; crypto_build_function_list(fl, pd); KCF_PROV_REFRELE(pd); } mutex_exit(&provider->pd_lock); } rv = CRYPTO_SUCCESS; release_minor: crypto_release_minor(cm); get_function_list.fl_return_value = rv; if (copyout(&get_function_list, arg, sizeof (get_function_list)) != 0) { return (EFAULT); } return (0); } /* * This ioctl maps a PKCS#11 mechanism string into an internal number * that is used by the kernel. pn_internal_number is set to the * internal number. */ /* ARGSUSED */ static int get_mechanism_number(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_get_mechanism_number, get_number); crypto_mech_type_t number; size_t len; char *mechanism_name; int rv; STRUCT_INIT(get_number, mode); if (copyin(arg, STRUCT_BUF(get_number), STRUCT_SIZE(get_number)) != 0) return (EFAULT); len = STRUCT_FGET(get_number, pn_mechanism_len); if (len == 0 || len > CRYPTO_MAX_MECH_NAME) { rv = CRYPTO_ARGUMENTS_BAD; goto out; } mechanism_name = kmem_alloc(len, KM_SLEEP); if (copyin(STRUCT_FGETP(get_number, pn_mechanism_string), mechanism_name, len) != 0) { kmem_free(mechanism_name, len); return (EFAULT); } /* * Get mechanism number from kcf. We set the load_module * flag to false since we use only hardware providers. */ number = crypto_mech2id_common(mechanism_name, B_FALSE); kmem_free(mechanism_name, len); if (number == CRYPTO_MECH_INVALID) { rv = CRYPTO_ARGUMENTS_BAD; goto out; } bcopy((char *)&number, (char *)STRUCT_FADDR(get_number, pn_internal_number), sizeof (number)); rv = CRYPTO_SUCCESS; out: STRUCT_FSET(get_number, pn_return_value, rv); if (copyout(STRUCT_BUF(get_number), arg, STRUCT_SIZE(get_number)) != 0) { return (EFAULT); } return (0); } /* * Side-effects: * 1. This routine stores provider descriptor pointers in an array * and increments each descriptor's reference count. The array * is stored in per-minor number storage. * 2. Destroys the old array and creates a new one every time * this routine is called. */ int crypto_get_provider_list(crypto_minor_t *cm, uint_t *count, crypto_provider_entry_t **array, boolean_t return_slot_list) { kcf_provider_desc_t **provider_array; crypto_provider_entry_t *p = NULL; uint_t provider_count; int rval; int i; /* * Take snapshot of provider table returning only HW entries * that are in a usable state. Also returns logical provider entries. */ rval = kcf_get_slot_list(&provider_count, &provider_array, B_FALSE); if (rval != CRYPTO_SUCCESS) return (rval); /* allocate memory before taking cm->cm_lock */ if (return_slot_list) { if (provider_count != 0) { p = kmem_alloc(provider_count * sizeof (crypto_provider_entry_t), KM_SLEEP); for (i = 0; i < provider_count; i++) { p[i].pe_provider_id = i; p[i].pe_mechanism_count = provider_array[i]->pd_mech_list_count; } } *array = p; *count = provider_count; } /* * Free existing array of providers and replace with new list. */ mutex_enter(&cm->cm_lock); if (cm->cm_provider_array != NULL) { ASSERT(cm->cm_provider_count > 0); kcf_free_provider_tab(cm->cm_provider_count, cm->cm_provider_array); } cm->cm_provider_array = provider_array; cm->cm_provider_count = provider_count; mutex_exit(&cm->cm_lock); return (CRYPTO_SUCCESS); } /* * This ioctl returns an array of crypto_provider_entry_t entries. * This is how consumers learn which hardware providers are available. */ /* ARGSUSED */ static int get_provider_list(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_get_provider_list, get_list); crypto_provider_entry_t *entries; crypto_minor_t *cm; size_t copyout_size; uint_t req_count; uint_t count; ulong_t offset; int rv; STRUCT_INIT(get_list, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "get_provider_list: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(get_list), STRUCT_SIZE(get_list)) != 0) { crypto_release_minor(cm); return (EFAULT); } rv = crypto_get_provider_list(cm, &count, &entries, RETURN_LIST); if (rv != CRYPTO_SUCCESS) { crypto_release_minor(cm); STRUCT_FSET(get_list, pl_return_value, rv); if (copyout(STRUCT_BUF(get_list), arg, STRUCT_SIZE(get_list)) != 0) { return (EFAULT); } return (0); } crypto_release_minor(cm); /* Number of slots caller thinks we have */ req_count = STRUCT_FGET(get_list, pl_count); /* Check if only requesting number of slots */ if (req_count == 0) { STRUCT_FSET(get_list, pl_count, count); STRUCT_FSET(get_list, pl_return_value, CRYPTO_SUCCESS); crypto_free_provider_list(entries, count); if (copyout(STRUCT_BUF(get_list), arg, STRUCT_SIZE(get_list)) != 0) { return (EFAULT); } return (0); } /* check if buffer is too small */ req_count = STRUCT_FGET(get_list, pl_count); if (count > req_count) { STRUCT_FSET(get_list, pl_count, count); STRUCT_FSET(get_list, pl_return_value, CRYPTO_BUFFER_TOO_SMALL); crypto_free_provider_list(entries, count); if (copyout(STRUCT_BUF(get_list), arg, STRUCT_SIZE(get_list)) != 0) { return (EFAULT); } return (0); } STRUCT_FSET(get_list, pl_count, count); STRUCT_FSET(get_list, pl_return_value, CRYPTO_SUCCESS); copyout_size = count * sizeof (crypto_provider_entry_t); /* copyout the first stuff */ if (copyout(STRUCT_BUF(get_list), arg, STRUCT_SIZE(get_list)) != 0) { crypto_free_provider_list(entries, count); return (EFAULT); } if (count == 0) { crypto_free_provider_list(entries, count); return (0); } /* copyout entries */ offset = (ulong_t)STRUCT_FADDR(get_list, pl_list); offset -= (ulong_t)STRUCT_BUF(get_list); if (copyout(entries, arg + offset, copyout_size) != 0) { crypto_free_provider_list(entries, count); return (EFAULT); } crypto_free_provider_list(entries, count); return (0); } static void ext_to_provider_data(int mode, kcf_provider_desc_t *provider, crypto_provider_ext_info_t *ei, void *out) { STRUCT_DECL(crypto_provider_data, pd); STRUCT_DECL(crypto_version, version); STRUCT_INIT(pd, mode); STRUCT_INIT(version, mode); bcopy(provider->pd_description, STRUCT_FGET(pd, pd_prov_desc), CRYPTO_PROVIDER_DESCR_MAX_LEN); bcopy(ei->ei_label, STRUCT_FGET(pd, pd_label), CRYPTO_EXT_SIZE_LABEL); bcopy(ei->ei_manufacturerID, STRUCT_FGET(pd, pd_manufacturerID), CRYPTO_EXT_SIZE_MANUF); bcopy(ei->ei_model, STRUCT_FGET(pd, pd_model), CRYPTO_EXT_SIZE_MODEL); bcopy(ei->ei_serial_number, STRUCT_FGET(pd, pd_serial_number), CRYPTO_EXT_SIZE_SERIAL); /* * We do not support ioctls for dual-function crypto operations yet. * So, we clear this flag as it might have been set by a provider. */ ei->ei_flags &= ~CRYPTO_EXTF_DUAL_CRYPTO_OPERATIONS; STRUCT_FSET(pd, pd_flags, ei->ei_flags); STRUCT_FSET(pd, pd_max_session_count, ei->ei_max_session_count); STRUCT_FSET(pd, pd_session_count, (int)CRYPTO_UNAVAILABLE_INFO); STRUCT_FSET(pd, pd_max_rw_session_count, ei->ei_max_session_count); STRUCT_FSET(pd, pd_rw_session_count, (int)CRYPTO_UNAVAILABLE_INFO); STRUCT_FSET(pd, pd_max_pin_len, ei->ei_max_pin_len); STRUCT_FSET(pd, pd_min_pin_len, ei->ei_min_pin_len); STRUCT_FSET(pd, pd_total_public_memory, ei->ei_total_public_memory); STRUCT_FSET(pd, pd_free_public_memory, ei->ei_free_public_memory); STRUCT_FSET(pd, pd_total_private_memory, ei->ei_total_private_memory); STRUCT_FSET(pd, pd_free_private_memory, ei->ei_free_private_memory); STRUCT_FSET(version, cv_major, ei->ei_hardware_version.cv_major); STRUCT_FSET(version, cv_minor, ei->ei_hardware_version.cv_minor); bcopy(STRUCT_BUF(version), STRUCT_FADDR(pd, pd_hardware_version), STRUCT_SIZE(version)); bcopy(STRUCT_BUF(version), STRUCT_FADDR(pd, pd_firmware_version), STRUCT_SIZE(version)); bcopy(ei->ei_time, STRUCT_FGET(pd, pd_time), CRYPTO_EXT_SIZE_TIME); bcopy(STRUCT_BUF(pd), out, STRUCT_SIZE(pd)); } /* * Utility routine to construct a crypto_provider_ext_info structure. Some * of the fields are constructed from information in the provider structure. * The rest of the fields have default values. We need to do this for * providers which do not support crypto_provider_management_ops routines. */ static void fabricate_ext_info(kcf_provider_desc_t *provider, crypto_provider_ext_info_t *ei) { /* empty label */ (void) memset(ei->ei_label, ' ', CRYPTO_EXT_SIZE_LABEL); (void) memset(ei->ei_manufacturerID, ' ', CRYPTO_EXT_SIZE_MANUF); (void) strncpy((char *)ei->ei_manufacturerID, "Unknown", 7); (void) memset(ei->ei_model, ' ', CRYPTO_EXT_SIZE_MODEL); (void) strncpy((char *)ei->ei_model, "Unknown", 7); (void) memset(ei->ei_serial_number, ' ', CRYPTO_EXT_SIZE_SERIAL); (void) strncpy((char *)ei->ei_serial_number, "Unknown", 7); if (KCF_PROV_RANDOM_OPS(provider) != NULL) ei->ei_flags |= CRYPTO_EXTF_RNG; if (KCF_PROV_DUAL_OPS(provider) != NULL) ei->ei_flags |= CRYPTO_EXTF_DUAL_CRYPTO_OPERATIONS; ei->ei_max_session_count = CRYPTO_UNAVAILABLE_INFO; ei->ei_max_pin_len = 0; ei->ei_min_pin_len = 0; ei->ei_total_public_memory = CRYPTO_UNAVAILABLE_INFO; ei->ei_free_public_memory = CRYPTO_UNAVAILABLE_INFO; ei->ei_total_private_memory = CRYPTO_UNAVAILABLE_INFO; ei->ei_free_private_memory = CRYPTO_UNAVAILABLE_INFO; ei->ei_hardware_version.cv_major = 1; ei->ei_hardware_version.cv_minor = 0; ei->ei_firmware_version.cv_major = 1; ei->ei_firmware_version.cv_minor = 0; } /* ARGSUSED */ static int get_provider_info(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_get_provider_info, get_info); kproject_t *projp; crypto_minor_t *cm; crypto_provider_id_t provider_id; kcf_provider_desc_t *provider, *real_provider; crypto_provider_ext_info_t *ext_info = NULL; size_t need; int error = 0; int rv; kcf_req_params_t params; STRUCT_INIT(get_info, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "get_provider_info: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(get_info), STRUCT_SIZE(get_info)) != 0) { crypto_release_minor(cm); return (EFAULT); } need = sizeof (crypto_provider_ext_info_t); if ((rv = crypto_buffer_check(need, &projp)) != CRYPTO_SUCCESS) { need = 0; goto release_minor; } /* initialize provider_array */ if (cm->cm_provider_array == NULL) { rv = crypto_get_provider_list(cm, NULL, NULL, DONT_RETURN_LIST); if (rv != CRYPTO_SUCCESS) { goto release_minor; } } ext_info = kmem_zalloc(need, KM_SLEEP); provider_id = STRUCT_FGET(get_info, gi_provider_id); mutex_enter(&cm->cm_lock); /* index must be less than count of providers */ if (provider_id >= cm->cm_provider_count) { mutex_exit(&cm->cm_lock); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } ASSERT(cm->cm_provider_array != NULL); provider = cm->cm_provider_array[provider_id]; KCF_PROV_REFHOLD(provider); mutex_exit(&cm->cm_lock); (void) kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(provider_ops), CRYPTO_PROVIDER_OFFSET(ext_info), CHECK_RESTRICT_FALSE, provider, &real_provider); if (real_provider != NULL) { ASSERT(real_provider == provider || provider->pd_prov_type == CRYPTO_LOGICAL_PROVIDER); KCF_WRAP_PROVMGMT_OPS_PARAMS(¶ms, KCF_OP_MGMT_EXTINFO, 0, NULL, 0, NULL, 0, NULL, ext_info, provider); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); ASSERT(rv != CRYPTO_NOT_SUPPORTED); KCF_PROV_REFRELE(real_provider); } else { /* do the best we can */ fabricate_ext_info(provider, ext_info); rv = CRYPTO_SUCCESS; } KCF_PROV_REFRELE(provider); if (rv == CRYPTO_SUCCESS) { ext_to_provider_data(mode, provider, ext_info, STRUCT_FADDR(get_info, gi_provider_data)); } release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (ext_info != NULL) kmem_free(ext_info, sizeof (crypto_provider_ext_info_t)); if (error != 0) return (error); STRUCT_FSET(get_info, gi_return_value, rv); if (copyout(STRUCT_BUF(get_info), arg, STRUCT_SIZE(get_info)) != 0) { return (EFAULT); } return (0); } /* * This ioctl returns an array of crypto_mech_name_t entries. * This is how consumers learn which mechanisms are permitted * by a provider. */ /* ARGSUSED */ static int get_provider_mechanisms(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_get_provider_mechanisms, get_mechanisms); crypto_mech_name_t *entries; crypto_minor_t *cm; size_t copyout_size; uint_t req_count; uint_t count; ulong_t offset; int err; STRUCT_INIT(get_mechanisms, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "get_provider_mechanisms: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(get_mechanisms), STRUCT_SIZE(get_mechanisms)) != 0) { crypto_release_minor(cm); return (EFAULT); } /* get array of mechanisms from the core module */ if ((err = crypto_get_provider_mechanisms(cm, STRUCT_FGET(get_mechanisms, pm_provider_id), &count, &entries)) != 0) { crypto_release_minor(cm); STRUCT_FSET(get_mechanisms, pm_return_value, err); if (copyout(STRUCT_BUF(get_mechanisms), arg, STRUCT_SIZE(get_mechanisms)) != 0) { return (EFAULT); } return (0); } crypto_release_minor(cm); /* Number of mechs caller thinks we have */ req_count = STRUCT_FGET(get_mechanisms, pm_count); /* Check if caller is just requesting a count of mechanisms */ if (req_count == 0) { STRUCT_FSET(get_mechanisms, pm_count, count); STRUCT_FSET(get_mechanisms, pm_return_value, CRYPTO_SUCCESS); crypto_free_mech_list(entries, count); if (copyout(STRUCT_BUF(get_mechanisms), arg, STRUCT_SIZE(get_mechanisms)) != 0) { return (EFAULT); } return (0); } /* check if buffer is too small */ if (count > req_count) { STRUCT_FSET(get_mechanisms, pm_count, count); STRUCT_FSET(get_mechanisms, pm_return_value, CRYPTO_BUFFER_TOO_SMALL); crypto_free_mech_list(entries, count); if (copyout(STRUCT_BUF(get_mechanisms), arg, STRUCT_SIZE(get_mechanisms)) != 0) { return (EFAULT); } return (0); } STRUCT_FSET(get_mechanisms, pm_count, count); STRUCT_FSET(get_mechanisms, pm_return_value, CRYPTO_SUCCESS); copyout_size = count * sizeof (crypto_mech_name_t); /* copyout the first stuff */ if (copyout(STRUCT_BUF(get_mechanisms), arg, STRUCT_SIZE(get_mechanisms)) != 0) { crypto_free_mech_list(entries, count); return (EFAULT); } if (count == 0) { return (0); } /* copyout entries */ offset = (ulong_t)STRUCT_FADDR(get_mechanisms, pm_list); offset -= (ulong_t)STRUCT_BUF(get_mechanisms); if (copyout(entries, arg + offset, copyout_size) != 0) { crypto_free_mech_list(entries, count); return (EFAULT); } crypto_free_mech_list(entries, count); return (0); } /* * This ioctl returns information about a provider's mechanism. */ /* ARGSUSED */ static int get_provider_mechanism_info(dev_t dev, caddr_t arg, int mode, int *rval) { crypto_get_provider_mechanism_info_t mechanism_info; crypto_minor_t *cm; kcf_provider_desc_t *pd; crypto_mech_info_t *mi = NULL; int rv = CRYPTO_SUCCESS; int i; if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "get_provider_mechanism_info: failed holding minor"); return (ENXIO); } if (copyin(arg, &mechanism_info, sizeof (mechanism_info)) != 0) { crypto_release_minor(cm); return (EFAULT); } /* initialize provider table */ if (cm->cm_provider_array == NULL) { rv = crypto_get_provider_list(cm, NULL, NULL, DONT_RETURN_LIST); if (rv != CRYPTO_SUCCESS) { mutex_enter(&cm->cm_lock); goto fail; } } /* * Provider ID must be less than the count of providers * obtained by calling get_provider_list(). */ mutex_enter(&cm->cm_lock); if (mechanism_info.mi_provider_id >= cm->cm_provider_count) { rv = CRYPTO_ARGUMENTS_BAD; goto fail; } pd = cm->cm_provider_array[mechanism_info.mi_provider_id]; for (i = 0; i < pd->pd_mech_list_count; i++) { if (strncmp(pd->pd_mechanisms[i].cm_mech_name, mechanism_info.mi_mechanism_name, CRYPTO_MAX_MECH_NAME) == 0) { mi = &pd->pd_mechanisms[i]; } } if (mi == NULL) { rv = CRYPTO_ARGUMENTS_BAD; goto fail; } mechanism_info.mi_min_key_size = mi->cm_min_key_length; mechanism_info.mi_max_key_size = mi->cm_max_key_length; mechanism_info.mi_flags = mi->cm_func_group_mask; fail: mutex_exit(&cm->cm_lock); crypto_release_minor(cm); mechanism_info.mi_return_value = rv; if (copyout(&mechanism_info, arg, sizeof (mechanism_info)) != 0) { return (EFAULT); } return (0); } /* * Every open of /dev/crypto multiplexes all PKCS#11 sessions across * a single session to each provider. Calls to open and close session * are not made to providers that do not support sessions. For these * providers, a session number of 0 is passed during subsequent operations, * and it is ignored by the provider. */ static int crypto_get_provider_session(crypto_minor_t *cm, crypto_provider_id_t provider_index, crypto_provider_session_t **output_ps) { kcf_provider_desc_t *pd, *real_provider; kcf_req_params_t params; crypto_provider_session_t *ps, *new_ps; crypto_session_id_t provider_session_id = 0; int rv; ASSERT(MUTEX_HELD(&cm->cm_lock)); /* pd may be a logical provider */ pd = cm->cm_provider_array[provider_index]; again: /* * Check if there is already a session to the provider. * Sessions may be to a logical provider or a real provider. */ for (ps = cm->cm_provider_session; ps != NULL; ps = ps->ps_next) { if (ps->ps_provider == pd) break; } /* found existing session */ if (ps != NULL) { ps->ps_refcnt++; *output_ps = ps; return (CRYPTO_SUCCESS); } mutex_exit(&cm->cm_lock); /* find a hardware provider that supports session ops */ (void) kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(session_ops), CRYPTO_SESSION_OFFSET(session_open), CHECK_RESTRICT_FALSE, pd, &real_provider); if (real_provider != NULL) { ASSERT(real_provider == pd || pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER); /* open session to provider */ KCF_WRAP_SESSION_OPS_PARAMS(¶ms, KCF_OP_SESSION_OPEN, &provider_session_id, 0, CRYPTO_USER, NULL, 0, pd); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv != CRYPTO_SUCCESS) { mutex_enter(&cm->cm_lock); KCF_PROV_REFRELE(real_provider); return (rv); } } /* allocate crypto_provider_session structure */ new_ps = kmem_zalloc(sizeof (crypto_provider_session_t), KM_SLEEP); /* * Check if someone opened a session to the provider * while we dropped the lock. */ mutex_enter(&cm->cm_lock); for (ps = cm->cm_provider_session; ps != NULL; ps = ps->ps_next) { if (ps->ps_provider == pd) { mutex_exit(&cm->cm_lock); kmem_free(new_ps, sizeof (crypto_provider_session_t)); if (real_provider != NULL) { KCF_WRAP_SESSION_OPS_PARAMS(¶ms, KCF_OP_SESSION_CLOSE, NULL, provider_session_id, CRYPTO_USER, NULL, 0, pd); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); } mutex_enter(&cm->cm_lock); goto again; } } /* increment refcnt and attach to crypto_minor structure */ new_ps->ps_session = provider_session_id; new_ps->ps_refcnt = 1; KCF_PROV_REFHOLD(pd); new_ps->ps_provider = pd; if (real_provider != NULL) { new_ps->ps_real_provider = real_provider; } new_ps->ps_next = cm->cm_provider_session; cm->cm_provider_session = new_ps; *output_ps = new_ps; return (CRYPTO_SUCCESS); } /* * Release a provider session. * If the reference count goes to zero, then close the session * to the provider. */ static void crypto_release_provider_session(crypto_minor_t *cm, crypto_provider_session_t *provider_session) { kcf_req_params_t params; crypto_provider_session_t *ps = NULL, **prev; ASSERT(MUTEX_HELD(&cm->cm_lock)); /* verify that provider_session is valid */ for (ps = cm->cm_provider_session, prev = &cm->cm_provider_session; ps != NULL; prev = &ps->ps_next, ps = ps->ps_next) { if (ps == provider_session) { break; } } if (ps == NULL) return; ps->ps_refcnt--; if (ps->ps_refcnt > 0) return; if (ps->ps_real_provider != NULL) { /* close session with provider */ KCF_WRAP_SESSION_OPS_PARAMS(¶ms, KCF_OP_SESSION_CLOSE, NULL, ps->ps_session, CRYPTO_USER, NULL, 0, ps->ps_provider); (void) kcf_submit_request(ps->ps_real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(ps->ps_real_provider); } KCF_PROV_REFRELE(ps->ps_provider); *prev = ps->ps_next; kmem_free(ps, sizeof (*ps)); } static int grow_session_table(crypto_minor_t *cm) { crypto_session_data_t **session_table; crypto_session_data_t **new; uint_t session_table_count; uint_t need; size_t current_allocation; size_t new_allocation; ASSERT(MUTEX_HELD(&cm->cm_lock)); session_table_count = cm->cm_session_table_count; session_table = cm->cm_session_table; need = session_table_count + CRYPTO_SESSION_CHUNK; current_allocation = session_table_count * sizeof (void *); new_allocation = need * sizeof (void *); mutex_enter(&curproc->p_lock); mutex_enter(&crypto_rctl_lock); /* give back the current allocation */ if (cm->cm_projp != NULL) { cm->cm_projp->kpj_data.kpd_crypto_mem -= current_allocation; } /* * Memory needed to grow the session table is checked * against the project.max-crypto-memory resource control. */ if (rctl_test(rc_project_crypto_mem, curproc->p_task->tk_proj->kpj_rctls, curproc, new_allocation, 0) & RCT_DENY) { /* restore the current allocation */ if (cm->cm_projp != NULL) { cm->cm_projp->kpj_data.kpd_crypto_mem += current_allocation; } mutex_exit(&crypto_rctl_lock); mutex_exit(&curproc->p_lock); return (CRYPTO_HOST_MEMORY); } curproc->p_task->tk_proj->kpj_data.kpd_crypto_mem += new_allocation; /* the process changed projects */ if (curproc->p_task->tk_proj != cm->cm_projp) { if (cm->cm_projp != 0) project_rele(cm->cm_projp); (void) project_hold(curproc->p_task->tk_proj); cm->cm_projp = curproc->p_task->tk_proj; } mutex_exit(&crypto_rctl_lock); mutex_exit(&curproc->p_lock); /* drop lock while we allocate memory */ mutex_exit(&cm->cm_lock); new = kmem_zalloc(new_allocation, KM_SLEEP); mutex_enter(&cm->cm_lock); /* check if another thread increased the table size */ if (session_table_count != cm->cm_session_table_count) { kmem_free(new, new_allocation); return (CRYPTO_SUCCESS); } bcopy(session_table, new, current_allocation); kmem_free(session_table, current_allocation); cm->cm_session_table = new; cm->cm_session_table_count += CRYPTO_SESSION_CHUNK; return (CRYPTO_SUCCESS); } /* * Find unused entry in session table and return it's index. * Initialize session table entry. */ /* ARGSUSED */ static int crypto_open_session(dev_t dev, uint_t flags, crypto_session_id_t *session_index, crypto_provider_id_t provider_id) { crypto_session_data_t **session_table; crypto_session_data_t *sp; crypto_minor_t *cm; uint_t session_table_count; uint_t i; int rv; crypto_provider_session_t *ps; kcf_provider_desc_t *provider; if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "crypto_open_session: failed holding minor"); return (CRYPTO_FAILED); } /* initialize provider_array */ if (cm->cm_provider_array == NULL) { rv = crypto_get_provider_list(cm, NULL, NULL, DONT_RETURN_LIST); if (rv != 0) { crypto_release_minor(cm); return (rv); } } mutex_enter(&cm->cm_lock); /* index must be less than count of providers */ if (provider_id >= cm->cm_provider_count) { mutex_exit(&cm->cm_lock); crypto_release_minor(cm); return (CRYPTO_INVALID_PROVIDER_ID); } ASSERT(cm->cm_provider_array != NULL); rv = crypto_get_provider_session(cm, provider_id, &ps); if (rv != CRYPTO_SUCCESS) { mutex_exit(&cm->cm_lock); crypto_release_minor(cm); return (rv); } provider = cm->cm_provider_array[provider_id]; again: session_table_count = cm->cm_session_table_count; session_table = cm->cm_session_table; /* session handles start with 1 */ for (i = 1; i < session_table_count; i++) { if (session_table[i] == NULL) break; } if (i == session_table_count || session_table_count == 0) { if ((rv = grow_session_table(cm)) != CRYPTO_SUCCESS) { crypto_release_provider_session(cm, ps); mutex_exit(&cm->cm_lock); crypto_release_minor(cm); return (rv); } goto again; } sp = kmem_cache_alloc(crypto_session_cache, KM_SLEEP); sp->sd_flags = 0; sp->sd_find_init_cookie = NULL; sp->sd_digest_ctx = NULL; sp->sd_encr_ctx = NULL; sp->sd_decr_ctx = NULL; sp->sd_sign_ctx = NULL; sp->sd_verify_ctx = NULL; sp->sd_sign_recover_ctx = NULL; sp->sd_verify_recover_ctx = NULL; mutex_init(&sp->sd_lock, NULL, MUTEX_DRIVER, NULL); cv_init(&sp->sd_cv, NULL, CV_DRIVER, NULL); KCF_PROV_REFHOLD(provider); sp->sd_provider = provider; sp->sd_provider_session = ps; cm->cm_session_table[i] = sp; mutex_exit(&cm->cm_lock); crypto_release_minor(cm); *session_index = i; return (CRYPTO_SUCCESS); } /* * Close a session. */ static int crypto_close_session(dev_t dev, crypto_session_id_t session_index) { crypto_session_data_t **session_table; crypto_session_data_t *sp; crypto_minor_t *cm; if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "crypto_close_session: failed holding minor"); return (CRYPTO_FAILED); } mutex_enter(&cm->cm_lock); session_table = cm->cm_session_table; if ((session_index) == 0 || (session_index >= cm->cm_session_table_count)) { mutex_exit(&cm->cm_lock); crypto_release_minor(cm); return (CRYPTO_SESSION_HANDLE_INVALID); } sp = session_table[session_index]; if (sp == NULL) { mutex_exit(&cm->cm_lock); crypto_release_minor(cm); return (CRYPTO_SESSION_HANDLE_INVALID); } /* * If session is in use, free it when the thread * finishes with the session. */ mutex_enter(&sp->sd_lock); if (sp->sd_flags & CRYPTO_SESSION_IS_BUSY) { sp->sd_flags |= CRYPTO_SESSION_IS_CLOSED; mutex_exit(&sp->sd_lock); } else { if (sp->sd_find_init_cookie != NULL) { (void) crypto_free_find_ctx(sp); } crypto_release_provider_session(cm, sp->sd_provider_session); KCF_PROV_REFRELE(sp->sd_provider); CRYPTO_CANCEL_ALL_CTX(sp); mutex_destroy(&sp->sd_lock); cv_destroy(&sp->sd_cv); kmem_cache_free(crypto_session_cache, sp); session_table[session_index] = NULL; } mutex_exit(&cm->cm_lock); crypto_release_minor(cm); return (CRYPTO_SUCCESS); } /* * This ioctl opens a session and returns the session ID in os_session. */ /* ARGSUSED */ static int open_session(dev_t dev, caddr_t arg, int mode, int *rval) { crypto_open_session_t open_session; crypto_session_id_t session; int rv; if (copyin(arg, &open_session, sizeof (open_session)) != 0) return (EFAULT); rv = crypto_open_session(dev, open_session.os_flags, &session, open_session.os_provider_id); if (rv != CRYPTO_SUCCESS) { open_session.os_return_value = rv; if (copyout(&open_session, arg, sizeof (open_session)) != 0) { return (EFAULT); } return (0); } open_session.os_session = session; open_session.os_return_value = CRYPTO_SUCCESS; if (copyout(&open_session, arg, sizeof (open_session)) != 0) { return (EFAULT); } return (0); } /* * This ioctl closes a session. */ /* ARGSUSED */ static int close_session(dev_t dev, caddr_t arg, int mode, int *rval) { crypto_close_session_t close_session; int rv; if (copyin(arg, &close_session, sizeof (close_session)) != 0) return (EFAULT); rv = crypto_close_session(dev, close_session.cs_session); close_session.cs_return_value = rv; if (copyout(&close_session, arg, sizeof (close_session)) != 0) { return (EFAULT); } return (0); } /* * Copy data model dependent mechanism structure into a kernel mechanism * structure. Allocate param storage if necessary. */ static boolean_t copyin_mech(int mode, crypto_mechanism_t *in_mech, crypto_mechanism_t *out_mech, size_t *out_rctl_bytes, size_t *out_carry, int *out_rv, int *out_error, kproject_t **projp) { STRUCT_DECL(crypto_mechanism, mech); caddr_t param; size_t param_len; size_t rctl_bytes = 0, carry = 0; int error = 0; int rv = 0; STRUCT_INIT(mech, mode); bcopy(in_mech, STRUCT_BUF(mech), STRUCT_SIZE(mech)); param = STRUCT_FGETP(mech, cm_param); param_len = STRUCT_FGET(mech, cm_param_len); out_mech->cm_type = STRUCT_FGET(mech, cm_type); out_mech->cm_param = NULL; out_mech->cm_param_len = 0; if (param != NULL && param_len != 0) { if (param_len > crypto_max_buffer_len) { cmn_err(CE_NOTE, "copyin_mech: buffer greater than " "%ld bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto out; } /* * Most calls to copyin_mech() are followed by a call to * copyin_key(), resulting in two resource control checks. * As an optimization, the resource control check is not * made in this function if the check is for less than * CRYPTO_DEFERRED_LIMIT bytes. The number of bytes that * would be checked is passed as an argument to copyin_key() * where the check is made, and the bytes are charged against * the project.max-crypto-memory resource control. */ if ((param_len > CRYPTO_DEFERRED_LIMIT) || out_carry == NULL) { rv = crypto_buffer_check(param_len, projp); if (rv != CRYPTO_SUCCESS) { goto out; } rctl_bytes = param_len; } else { carry = param_len; } out_mech->cm_param = kmem_alloc(param_len, KM_SLEEP); if (copyin((char *)param, out_mech->cm_param, param_len) != 0) { kmem_free(out_mech->cm_param, param_len); out_mech->cm_param = NULL; error = EFAULT; goto out; } out_mech->cm_param_len = param_len; } out: *out_rctl_bytes = rctl_bytes; *out_rv = rv; *out_error = error; if (out_carry != NULL) *out_carry = carry; return ((rv | error) ? B_FALSE : B_TRUE); } /* * Free key attributes when key type is CRYPTO_KEY_ATTR_LIST. * The crypto_key structure is not freed. */ static void crypto_free_key_attributes(crypto_key_t *key) { crypto_object_attribute_t *attrs; size_t len = 0; int i; ASSERT(key->ck_format == CRYPTO_KEY_ATTR_LIST); if (key->ck_count == 0 || key->ck_attrs == NULL) return; /* compute the size of the container */ len = key->ck_count * sizeof (crypto_object_attribute_t); /* total up the size of all attributes in the container */ for (i = 0; i < key->ck_count; i++) { attrs = &key->ck_attrs[i]; if (attrs->oa_value_len != 0 && attrs->oa_value != NULL) { len += roundup(attrs->oa_value_len, sizeof (caddr_t)); } } bzero(key->ck_attrs, len); kmem_free(key->ck_attrs, len); } /* * Frees allocated storage in the key structure, but doesn't free * the key structure. */ static void free_crypto_key(crypto_key_t *key) { switch (key->ck_format) { case CRYPTO_KEY_RAW: { size_t len; if (key->ck_length == 0 || key->ck_data == NULL) break; len = CRYPTO_BITS2BYTES(key->ck_length); bzero(key->ck_data, len); kmem_free(key->ck_data, len); break; } case CRYPTO_KEY_ATTR_LIST: crypto_free_key_attributes(key); break; default: break; } } /* * Copy in an array of crypto_object_attribute structures from user-space. * Kernel memory is allocated for the array and the value of each attribute * in the array. Since unprivileged users can specify the size of attributes, * the amount of memory needed is charged against the * project.max-crypto-memory resource control. * * Attribute values are copied in from user-space if copyin_value is set to * B_TRUE. This routine returns B_TRUE if the copyin was successful. */ static boolean_t copyin_attributes(int mode, uint_t count, caddr_t oc_attributes, crypto_object_attribute_t **k_attrs_out, size_t *k_attrs_size_out, caddr_t *u_attrs_out, int *out_rv, int *out_error, size_t *out_rctl_bytes, size_t carry, boolean_t copyin_value, kproject_t **projp) { STRUCT_DECL(crypto_object_attribute, oa); crypto_object_attribute_t *k_attrs = NULL; caddr_t attrs = NULL, ap, p, value; caddr_t k_attrs_buf; size_t k_attrs_len; size_t k_attrs_buf_len = 0; size_t k_attrs_total_len = 0; size_t tmp_len; size_t rctl_bytes = 0; size_t len = 0; size_t value_len; int error = 0; int rv = 0; int i; STRUCT_INIT(oa, mode); if (count == 0) { rv = CRYPTO_SUCCESS; goto out; } if (count > CRYPTO_MAX_ATTRIBUTE_COUNT) { rv = CRYPTO_ARGUMENTS_BAD; goto out; } /* compute size of crypto_object_attribute array */ len = count * STRUCT_SIZE(oa); /* this allocation is not charged against the user's resource limit */ attrs = kmem_alloc(len, KM_SLEEP); if (copyin(oc_attributes, attrs, len) != 0) { error = EFAULT; goto out; } /* figure out how much memory to allocate for all of the attributes */ ap = attrs; for (i = 0; i < count; i++) { bcopy(ap, STRUCT_BUF(oa), STRUCT_SIZE(oa)); tmp_len = roundup(STRUCT_FGET(oa, oa_value_len), sizeof (caddr_t)); if (tmp_len > crypto_max_buffer_len) { cmn_err(CE_NOTE, "copyin_attributes: buffer greater " "than %ld bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto out; } if (STRUCT_FGETP(oa, oa_value) != NULL) k_attrs_buf_len += tmp_len; ap += STRUCT_SIZE(oa); } k_attrs_len = count * sizeof (crypto_object_attribute_t); k_attrs_total_len = k_attrs_buf_len + k_attrs_len; if ((k_attrs_total_len + carry) != 0) { rv = crypto_buffer_check(k_attrs_total_len + carry, projp); if (rv != CRYPTO_SUCCESS) { goto out; } } rctl_bytes = k_attrs_total_len + carry; /* one big allocation for everything */ k_attrs = kmem_alloc(k_attrs_total_len, KM_SLEEP); k_attrs_buf = (char *)k_attrs + k_attrs_len; ap = attrs; p = k_attrs_buf; for (i = 0; i < count; i++) { bcopy(ap, STRUCT_BUF(oa), STRUCT_SIZE(oa)); k_attrs[i].oa_type = STRUCT_FGET(oa, oa_type); value = STRUCT_FGETP(oa, oa_value); value_len = STRUCT_FGET(oa, oa_value_len); if (value != NULL && value_len != 0 && copyin_value) { if (copyin(value, p, value_len) != 0) { kmem_free(k_attrs, k_attrs_total_len); k_attrs = NULL; error = EFAULT; goto out; } } if (value != NULL) { k_attrs[i].oa_value = p; p += roundup(value_len, sizeof (caddr_t)); } else { k_attrs[i].oa_value = NULL; } k_attrs[i].oa_value_len = value_len; ap += STRUCT_SIZE(oa); } out: if (attrs != NULL) { /* * Free the array if there is a failure or the caller * doesn't want the array to be returned. */ if (error != 0 || rv != CRYPTO_SUCCESS || u_attrs_out == NULL) { kmem_free(attrs, len); attrs = NULL; } } if (u_attrs_out != NULL) *u_attrs_out = attrs; if (k_attrs_size_out != NULL) *k_attrs_size_out = k_attrs_total_len; *k_attrs_out = k_attrs; *out_rctl_bytes = rctl_bytes; *out_rv = rv; *out_error = error; return ((rv | error) ? B_FALSE : B_TRUE); } /* * Copy data model dependent raw key into a kernel key * structure. Checks key length or attribute lengths against * resource controls before allocating memory. Returns B_TRUE * if both error and rv are set to 0. */ static boolean_t copyin_key(int mode, crypto_key_t *in_key, crypto_key_t *out_key, size_t *out_rctl_bytes, int *out_rv, int *out_error, size_t carry, kproject_t **projp) { STRUCT_DECL(crypto_key, key); crypto_object_attribute_t *k_attrs = NULL; size_t key_bits; size_t key_bytes = 0; size_t rctl_bytes = 0; int count; int error = 0; int rv = CRYPTO_SUCCESS; STRUCT_INIT(key, mode); bcopy(in_key, STRUCT_BUF(key), STRUCT_SIZE(key)); out_key->ck_format = STRUCT_FGET(key, ck_format); switch (out_key->ck_format) { case CRYPTO_KEY_RAW: key_bits = STRUCT_FGET(key, ck_length); if (key_bits != 0) { key_bytes = CRYPTO_BITS2BYTES(key_bits); if (key_bytes > crypto_max_buffer_len) { cmn_err(CE_NOTE, "copyin_key: buffer greater " "than %ld bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto out; } rv = crypto_buffer_check(key_bytes + carry, projp); if (rv != CRYPTO_SUCCESS) { goto out; } rctl_bytes = key_bytes + carry; out_key->ck_data = kmem_alloc(key_bytes, KM_SLEEP); if (copyin((char *)STRUCT_FGETP(key, ck_data), out_key->ck_data, key_bytes) != 0) { kmem_free(out_key->ck_data, key_bytes); out_key->ck_data = NULL; out_key->ck_length = 0; error = EFAULT; goto out; } } out_key->ck_length = key_bits; break; case CRYPTO_KEY_ATTR_LIST: count = STRUCT_FGET(key, ck_count); if (copyin_attributes(mode, count, (caddr_t)STRUCT_FGETP(key, ck_attrs), &k_attrs, NULL, NULL, &rv, &error, &rctl_bytes, carry, B_TRUE, projp)) { out_key->ck_count = count; out_key->ck_attrs = k_attrs; k_attrs = NULL; } else { out_key->ck_count = 0; out_key->ck_attrs = NULL; } break; case CRYPTO_KEY_REFERENCE: out_key->ck_obj_id = STRUCT_FGET(key, ck_obj_id); break; default: rv = CRYPTO_ARGUMENTS_BAD; } out: *out_rctl_bytes = rctl_bytes; *out_rv = rv; *out_error = error; return ((rv | error) ? B_FALSE : B_TRUE); } /* * This routine does two things: * 1. Given a crypto_minor structure and a session ID, it returns * a valid session pointer. * 2. It checks that the provider, to which the session has been opened, * has not been removed. */ static boolean_t get_session_ptr(crypto_session_id_t i, crypto_minor_t *cm, crypto_session_data_t **session_ptr, int *out_error, int *out_rv) { crypto_session_data_t *sp = NULL; int rv = CRYPTO_SESSION_HANDLE_INVALID; int error = 0; mutex_enter(&cm->cm_lock); if ((i < cm->cm_session_table_count) && (cm->cm_session_table[i] != NULL)) { sp = cm->cm_session_table[i]; mutex_enter(&sp->sd_lock); mutex_exit(&cm->cm_lock); while (sp->sd_flags & CRYPTO_SESSION_IS_BUSY) { if (cv_wait_sig(&sp->sd_cv, &sp->sd_lock) == 0) { mutex_exit(&sp->sd_lock); sp = NULL; error = EINTR; goto out; } } if (sp->sd_flags & CRYPTO_SESSION_IS_CLOSED) { mutex_exit(&sp->sd_lock); sp = NULL; goto out; } if (KCF_IS_PROV_REMOVED(sp->sd_provider)) { mutex_exit(&sp->sd_lock); sp = NULL; rv = CRYPTO_DEVICE_ERROR; goto out; } rv = CRYPTO_SUCCESS; sp->sd_flags |= CRYPTO_SESSION_IS_BUSY; mutex_exit(&sp->sd_lock); } else { mutex_exit(&cm->cm_lock); } out: *session_ptr = sp; *out_error = error; *out_rv = rv; return ((rv == CRYPTO_SUCCESS && error == 0) ? B_TRUE : B_FALSE); } #define CRYPTO_SESSION_RELE(s) { \ mutex_enter(&((s)->sd_lock)); \ (s)->sd_flags &= ~CRYPTO_SESSION_IS_BUSY; \ cv_broadcast(&(s)->sd_cv); \ mutex_exit(&((s)->sd_lock)); \ } /* ARGSUSED */ static int encrypt_init(dev_t dev, caddr_t arg, int mode, int *rval) { return (cipher_init(dev, arg, mode, crypto_encrypt_init_prov)); } /* ARGSUSED */ static int decrypt_init(dev_t dev, caddr_t arg, int mode, int *rval) { return (cipher_init(dev, arg, mode, crypto_decrypt_init_prov)); } /* * umech is a mechanism structure that has been copied from user address * space into kernel address space. Only one copyin has been done. * The mechanism parameter, if non-null, still points to user address space. * If the mechanism parameter contains pointers, they are pointers into * user address space. * * kmech is a umech with all pointers and structures in kernel address space. * * This routine calls the provider's entry point to copy a umech parameter * into kernel address space. Kernel memory is allocated by the provider. */ static int crypto_provider_copyin_mech_param(kcf_provider_desc_t *pd, crypto_mechanism_t *umech, crypto_mechanism_t *kmech, int mode, int *error) { crypto_mech_type_t provider_mech_type; kcf_ops_class_t class; int index; int rv; /* get the provider's mech number */ class = KCF_MECH2CLASS(umech->cm_type); index = KCF_MECH2INDEX(umech->cm_type); provider_mech_type = pd->pd_map_mechnums[class][index]; kmech->cm_param = NULL; kmech->cm_param_len = 0; kmech->cm_type = provider_mech_type; rv = KCF_PROV_COPYIN_MECH(pd, umech, kmech, error, mode); kmech->cm_type = umech->cm_type; return (rv); } /* * umech is a mechanism structure that has been copied from user address * space into kernel address space. Only one copyin has been done. * The mechanism parameter, if non-null, still points to user address space. * If the mechanism parameter contains pointers, they are pointers into * user address space. * * kmech is a umech with all pointers and structures in kernel address space. * * This routine calls the provider's entry point to copy a kmech parameter * into user address space using umech as a template containing * user address pointers. */ static int crypto_provider_copyout_mech_param(kcf_provider_desc_t *pd, crypto_mechanism_t *kmech, crypto_mechanism_t *umech, int mode, int *error) { crypto_mech_type_t provider_mech_type; kcf_ops_class_t class; int index; int rv; /* get the provider's mech number */ class = KCF_MECH2CLASS(umech->cm_type); index = KCF_MECH2INDEX(umech->cm_type); provider_mech_type = pd->pd_map_mechnums[class][index]; kmech->cm_type = provider_mech_type; rv = KCF_PROV_COPYOUT_MECH(pd, kmech, umech, error, mode); kmech->cm_type = umech->cm_type; return (rv); } /* * Call the provider's entry point to free kernel memory that has been * allocated for the mechanism's parameter. */ static void crypto_free_mech(kcf_provider_desc_t *pd, boolean_t allocated_by_crypto_module, crypto_mechanism_t *mech) { crypto_mech_type_t provider_mech_type; kcf_ops_class_t class; int index; if (allocated_by_crypto_module) { if (mech->cm_param != NULL) kmem_free(mech->cm_param, mech->cm_param_len); } else { /* get the provider's mech number */ class = KCF_MECH2CLASS(mech->cm_type); index = KCF_MECH2INDEX(mech->cm_type); provider_mech_type = pd->pd_map_mechnums[class][index]; if (mech->cm_param != NULL && mech->cm_param_len != 0) { mech->cm_type = provider_mech_type; (void) KCF_PROV_FREE_MECH(pd, mech); } } } /* * ASSUMPTION: crypto_encrypt_init and crypto_decrypt_init * structures are identical except for field names. */ static int cipher_init(dev_t dev, caddr_t arg, int mode, int (*init)(crypto_provider_t, crypto_session_id_t, crypto_mechanism_t *, crypto_key_t *, crypto_ctx_template_t, crypto_context_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_encrypt_init, encrypt_init); kproject_t *mech_projp, *key_projp; kcf_provider_desc_t *real_provider = NULL; crypto_session_id_t session_id; crypto_mechanism_t mech; crypto_key_t key; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_context_t cc; crypto_ctx_t **ctxpp; size_t mech_rctl_bytes = 0; size_t key_rctl_bytes = 0; size_t carry; int error = 0; int rv; boolean_t allocated_by_crypto_module = B_FALSE; crypto_func_group_t fg; STRUCT_INIT(encrypt_init, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "cipher_init: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(encrypt_init), STRUCT_SIZE(encrypt_init)) != 0) { crypto_release_minor(cm); return (EFAULT); } mech.cm_param = NULL; bzero(&key, sizeof (crypto_key_t)); session_id = STRUCT_FGET(encrypt_init, ei_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(encrypt_init, ei_mech), &mech.cm_type, sizeof (crypto_mech_type_t)); if (init == crypto_encrypt_init_prov) { fg = CRYPTO_FG_ENCRYPT; } else { fg = CRYPTO_FG_DECRYPT; } if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, fg)) != CRYPTO_SUCCESS) { goto out; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(encrypt_init, ei_mech), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(encrypt_init, ei_mech), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto out; } } else { if (rv != CRYPTO_SUCCESS) goto out; } if (!copyin_key(mode, STRUCT_FADDR(encrypt_init, ei_key), &key, &key_rctl_bytes, &rv, &error, carry, &key_projp)) { goto out; } rv = (init)(real_provider, sp->sd_provider_session->ps_session, &mech, &key, NULL, &cc, NULL); /* * Check if a context already exists. If so, it means it is being * abandoned. So, cancel it to avoid leaking it. */ ctxpp = (init == crypto_encrypt_init_prov) ? &sp->sd_encr_ctx : &sp->sd_decr_ctx; if (*ctxpp != NULL) CRYPTO_CANCEL_CTX(ctxpp); *ctxpp = (rv == CRYPTO_SUCCESS) ? cc : NULL; out: CRYPTO_SESSION_RELE(sp); release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(key_rctl_bytes, key_projp); mutex_exit(&crypto_rctl_lock); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } free_crypto_key(&key); if (error != 0) /* XXX free context */ return (error); STRUCT_FSET(encrypt_init, ei_return_value, rv); if (copyout(STRUCT_BUF(encrypt_init), arg, STRUCT_SIZE(encrypt_init)) != 0) { /* XXX free context */ return (EFAULT); } return (0); } /* ARGSUSED */ static int encrypt(dev_t dev, caddr_t arg, int mode, int *rval) { return (cipher(dev, arg, mode, crypto_encrypt_single)); } /* ARGSUSED */ static int decrypt(dev_t dev, caddr_t arg, int mode, int *rval) { return (cipher(dev, arg, mode, crypto_decrypt_single)); } /* * ASSUMPTION: crypto_encrypt and crypto_decrypt structures * are identical except for field names. */ static int cipher(dev_t dev, caddr_t arg, int mode, int (*single)(crypto_context_t, crypto_data_t *, crypto_data_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_encrypt, encrypt); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_ctx_t **ctxpp; crypto_data_t data, encr; size_t datalen, encrlen, need = 0; char *encrbuf; int error = 0; int rv; STRUCT_INIT(encrypt, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "cipher: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(encrypt), STRUCT_SIZE(encrypt)) != 0) { crypto_release_minor(cm); return (EFAULT); } data.cd_raw.iov_base = NULL; encr.cd_raw.iov_base = NULL; datalen = STRUCT_FGET(encrypt, ce_datalen); encrlen = STRUCT_FGET(encrypt, ce_encrlen); /* * Don't allocate output buffer unless both buffer pointer and * buffer length are not NULL or 0 (length). */ encrbuf = STRUCT_FGETP(encrypt, ce_encrbuf); if (encrbuf == NULL || encrlen == 0) { encrlen = 0; } if (datalen > crypto_max_buffer_len || encrlen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "cipher: buffer greater than %ld bytes, " "pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } need = datalen + encrlen; if ((rv = crypto_buffer_check(need, &projp)) != CRYPTO_SUCCESS) { need = 0; goto release_minor; } INIT_RAW_CRYPTO_DATA(data, datalen); data.cd_miscdata = NULL; if (datalen != 0 && copyin(STRUCT_FGETP(encrypt, ce_databuf), data.cd_raw.iov_base, datalen) != 0) { error = EFAULT; goto release_minor; } INIT_RAW_CRYPTO_DATA(encr, encrlen); session_id = STRUCT_FGET(encrypt, ce_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } ctxpp = (single == crypto_encrypt_single) ? &sp->sd_encr_ctx : &sp->sd_decr_ctx; rv = (single)(*ctxpp, &data, &encr, NULL); if (KCF_CONTEXT_DONE(rv)) *ctxpp = NULL; CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS) { ASSERT(encr.cd_length <= encrlen); if (encr.cd_length != 0 && copyout(encr.cd_raw.iov_base, encrbuf, encr.cd_length) != 0) { error = EFAULT; goto release_minor; } STRUCT_FSET(encrypt, ce_encrlen, encr.cd_length); } if (rv == CRYPTO_BUFFER_TOO_SMALL) { /* * The providers return CRYPTO_BUFFER_TOO_SMALL even for case 1 * of section 11.2 of the pkcs11 spec. We catch it here and * provide the correct pkcs11 return value. */ if (STRUCT_FGETP(encrypt, ce_encrbuf) == NULL) rv = CRYPTO_SUCCESS; STRUCT_FSET(encrypt, ce_encrlen, encr.cd_length); } release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (data.cd_raw.iov_base != NULL) kmem_free(data.cd_raw.iov_base, datalen); if (encr.cd_raw.iov_base != NULL) kmem_free(encr.cd_raw.iov_base, encrlen); if (error != 0) return (error); STRUCT_FSET(encrypt, ce_return_value, rv); if (copyout(STRUCT_BUF(encrypt), arg, STRUCT_SIZE(encrypt)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int encrypt_update(dev_t dev, caddr_t arg, int mode, int *rval) { return (cipher_update(dev, arg, mode, crypto_encrypt_update)); } /* ARGSUSED */ static int decrypt_update(dev_t dev, caddr_t arg, int mode, int *rval) { return (cipher_update(dev, arg, mode, crypto_decrypt_update)); } /* * ASSUMPTION: crypto_encrypt_update and crypto_decrypt_update * structures are identical except for field names. */ static int cipher_update(dev_t dev, caddr_t arg, int mode, int (*update)(crypto_context_t, crypto_data_t *, crypto_data_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_encrypt_update, encrypt_update); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_ctx_t **ctxpp; crypto_data_t data, encr; size_t datalen, encrlen, need = 0; char *encrbuf; int error = 0; int rv; STRUCT_INIT(encrypt_update, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "cipher_update: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(encrypt_update), STRUCT_SIZE(encrypt_update)) != 0) { crypto_release_minor(cm); return (EFAULT); } data.cd_raw.iov_base = NULL; encr.cd_raw.iov_base = NULL; datalen = STRUCT_FGET(encrypt_update, eu_datalen); encrlen = STRUCT_FGET(encrypt_update, eu_encrlen); /* * Don't allocate output buffer unless both buffer pointer and * buffer length are not NULL or 0 (length). */ encrbuf = STRUCT_FGETP(encrypt_update, eu_encrbuf); if (encrbuf == NULL || encrlen == 0) { encrlen = 0; } if (datalen > crypto_max_buffer_len || encrlen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "cipher_update: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } need = datalen + encrlen; if ((rv = crypto_buffer_check(need, &projp)) != CRYPTO_SUCCESS) { need = 0; goto release_minor; } INIT_RAW_CRYPTO_DATA(data, datalen); data.cd_miscdata = NULL; if (datalen != 0 && copyin(STRUCT_FGETP(encrypt_update, eu_databuf), data.cd_raw.iov_base, datalen) != 0) { error = EFAULT; goto release_minor; } INIT_RAW_CRYPTO_DATA(encr, encrlen); session_id = STRUCT_FGET(encrypt_update, eu_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } ctxpp = (update == crypto_encrypt_update) ? &sp->sd_encr_ctx : &sp->sd_decr_ctx; rv = (update)(*ctxpp, &data, &encr, NULL); if (rv == CRYPTO_SUCCESS || rv == CRYPTO_BUFFER_TOO_SMALL) { if (rv == CRYPTO_SUCCESS) { ASSERT(encr.cd_length <= encrlen); if (encr.cd_length != 0 && copyout(encr.cd_raw.iov_base, encrbuf, encr.cd_length) != 0) { error = EFAULT; goto out; } } else { /* * The providers return CRYPTO_BUFFER_TOO_SMALL even * for case 1 of section 11.2 of the pkcs11 spec. * We catch it here and provide the correct pkcs11 * return value. */ if (STRUCT_FGETP(encrypt_update, eu_encrbuf) == NULL) rv = CRYPTO_SUCCESS; } STRUCT_FSET(encrypt_update, eu_encrlen, encr.cd_length); } else { CRYPTO_CANCEL_CTX(ctxpp); } out: CRYPTO_SESSION_RELE(sp); release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (data.cd_raw.iov_base != NULL) kmem_free(data.cd_raw.iov_base, datalen); if (encr.cd_raw.iov_base != NULL) kmem_free(encr.cd_raw.iov_base, encrlen); if (error != 0) return (error); STRUCT_FSET(encrypt_update, eu_return_value, rv); if (copyout(STRUCT_BUF(encrypt_update), arg, STRUCT_SIZE(encrypt_update)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int encrypt_final(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_final(dev, arg, mode, crypto_encrypt_final)); } /* ARGSUSED */ static int decrypt_final(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_final(dev, arg, mode, crypto_decrypt_final)); } /* * ASSUMPTION: crypto_encrypt_final, crypto_decrypt_final, crypto_sign_final, * and crypto_digest_final structures are identical except for field names. */ static int common_final(dev_t dev, caddr_t arg, int mode, int (*final)(crypto_context_t, crypto_data_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_encrypt_final, encrypt_final); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_ctx_t **ctxpp; crypto_data_t encr; size_t encrlen, need = 0; char *encrbuf; int error = 0; int rv; STRUCT_INIT(encrypt_final, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "common_final: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(encrypt_final), STRUCT_SIZE(encrypt_final)) != 0) { crypto_release_minor(cm); return (EFAULT); } encr.cd_format = CRYPTO_DATA_RAW; encr.cd_raw.iov_base = NULL; encrlen = STRUCT_FGET(encrypt_final, ef_encrlen); /* * Don't allocate output buffer unless both buffer pointer and * buffer length are not NULL or 0 (length). */ encrbuf = STRUCT_FGETP(encrypt_final, ef_encrbuf); if (encrbuf == NULL || encrlen == 0) { encrlen = 0; } if (encrlen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "common_final: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(encrlen, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } need = encrlen; encr.cd_raw.iov_base = kmem_alloc(encrlen, KM_SLEEP); encr.cd_raw.iov_len = encrlen; encr.cd_offset = 0; encr.cd_length = encrlen; session_id = STRUCT_FGET(encrypt_final, ef_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } ASSERT(final == crypto_encrypt_final || final == crypto_decrypt_final || final == crypto_sign_final || final == crypto_digest_final); if (final == crypto_encrypt_final) { ctxpp = &sp->sd_encr_ctx; } else if (final == crypto_decrypt_final) { ctxpp = &sp->sd_decr_ctx; } else if (final == crypto_sign_final) { ctxpp = &sp->sd_sign_ctx; } else { ctxpp = &sp->sd_digest_ctx; } rv = (final)(*ctxpp, &encr, NULL); if (KCF_CONTEXT_DONE(rv)) *ctxpp = NULL; CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS) { ASSERT(encr.cd_length <= encrlen); if (encr.cd_length != 0 && copyout(encr.cd_raw.iov_base, encrbuf, encr.cd_length) != 0) { error = EFAULT; goto release_minor; } STRUCT_FSET(encrypt_final, ef_encrlen, encr.cd_length); } if (rv == CRYPTO_BUFFER_TOO_SMALL) { /* * The providers return CRYPTO_BUFFER_TOO_SMALL even for case 1 * of section 11.2 of the pkcs11 spec. We catch it here and * provide the correct pkcs11 return value. */ if (STRUCT_FGETP(encrypt_final, ef_encrbuf) == NULL) rv = CRYPTO_SUCCESS; STRUCT_FSET(encrypt_final, ef_encrlen, encr.cd_length); } release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (encr.cd_raw.iov_base != NULL) kmem_free(encr.cd_raw.iov_base, encrlen); if (error != 0) return (error); STRUCT_FSET(encrypt_final, ef_return_value, rv); if (copyout(STRUCT_BUF(encrypt_final), arg, STRUCT_SIZE(encrypt_final)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int digest_init(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_digest_init, digest_init); kproject_t *mech_projp; kcf_provider_desc_t *real_provider = NULL; crypto_session_id_t session_id; crypto_mechanism_t mech; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_context_t cc; size_t rctl_bytes = 0; int error = 0; int rv; STRUCT_INIT(digest_init, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "digest_init: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(digest_init), STRUCT_SIZE(digest_init)) != 0) { crypto_release_minor(cm); return (EFAULT); } mech.cm_param = NULL; session_id = STRUCT_FGET(digest_init, di_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if (!copyin_mech(mode, STRUCT_FADDR(digest_init, di_mech), &mech, &rctl_bytes, NULL, &rv, &error, &mech_projp)) { goto out; } if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, CRYPTO_FG_DIGEST)) != CRYPTO_SUCCESS) { goto out; } rv = crypto_digest_init_prov(real_provider, sp->sd_provider_session->ps_session, &mech, &cc, NULL); /* * Check if a context already exists. If so, it means it is being * abandoned. So, cancel it to avoid leaking it. */ if (sp->sd_digest_ctx != NULL) CRYPTO_CANCEL_CTX(&sp->sd_digest_ctx); sp->sd_digest_ctx = (rv == CRYPTO_SUCCESS) ? cc : NULL; out: CRYPTO_SESSION_RELE(sp); release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, mech_projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (real_provider != NULL) KCF_PROV_REFRELE(real_provider); if (mech.cm_param != NULL) kmem_free(mech.cm_param, mech.cm_param_len); if (error != 0) return (error); STRUCT_FSET(digest_init, di_return_value, rv); if (copyout(STRUCT_BUF(digest_init), arg, STRUCT_SIZE(digest_init)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int digest_update(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_digest_update, digest_update); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_data_t data; size_t datalen, need = 0; int error = 0; int rv; STRUCT_INIT(digest_update, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "digest_update: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(digest_update), STRUCT_SIZE(digest_update)) != 0) { crypto_release_minor(cm); return (EFAULT); } data.cd_format = CRYPTO_DATA_RAW; data.cd_raw.iov_base = NULL; datalen = STRUCT_FGET(digest_update, du_datalen); if (datalen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "digest_update: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(datalen, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } need = datalen; data.cd_raw.iov_base = kmem_alloc(datalen, KM_SLEEP); data.cd_raw.iov_len = datalen; if (datalen != 0 && copyin(STRUCT_FGETP(digest_update, du_databuf), data.cd_raw.iov_base, datalen) != 0) { error = EFAULT; goto release_minor; } data.cd_offset = 0; data.cd_length = datalen; session_id = STRUCT_FGET(digest_update, du_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } rv = crypto_digest_update(sp->sd_digest_ctx, &data, NULL); if (rv != CRYPTO_SUCCESS) CRYPTO_CANCEL_CTX(&sp->sd_digest_ctx); CRYPTO_SESSION_RELE(sp); release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (data.cd_raw.iov_base != NULL) kmem_free(data.cd_raw.iov_base, datalen); if (error != 0) return (error); STRUCT_FSET(digest_update, du_return_value, rv); if (copyout(STRUCT_BUF(digest_update), arg, STRUCT_SIZE(digest_update)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int digest_key(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_digest_key, digest_key); kproject_t *projp; crypto_session_id_t session_id; crypto_key_t key; crypto_minor_t *cm; crypto_session_data_t *sp; size_t rctl_bytes = 0; int error = 0; int rv; STRUCT_INIT(digest_key, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "digest_key: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(digest_key), STRUCT_SIZE(digest_key)) != 0) { crypto_release_minor(cm); return (EFAULT); } bzero(&key, sizeof (crypto_key_t)); session_id = STRUCT_FGET(digest_key, dk_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if (!copyin_key(mode, STRUCT_FADDR(digest_key, dk_key), &key, &rctl_bytes, &rv, &error, 0, &projp)) { goto out; } rv = crypto_digest_key_prov(sp->sd_digest_ctx, &key, NULL); if (rv != CRYPTO_SUCCESS) CRYPTO_CANCEL_CTX(&sp->sd_digest_ctx); out: CRYPTO_SESSION_RELE(sp); release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); free_crypto_key(&key); if (error != 0) return (error); STRUCT_FSET(digest_key, dk_return_value, rv); if (copyout(STRUCT_BUF(digest_key), arg, STRUCT_SIZE(digest_key)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int digest_final(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_final(dev, arg, mode, crypto_digest_final)); } /* ARGSUSED */ static int digest(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_digest(dev, arg, mode, crypto_digest_single)); } /* * ASSUMPTION: crypto_digest, crypto_sign, crypto_sign_recover, * and crypto_verify_recover are identical except for field names. */ static int common_digest(dev_t dev, caddr_t arg, int mode, int (*single)(crypto_context_t, crypto_data_t *, crypto_data_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_digest, crypto_digest); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_data_t data, digest; crypto_ctx_t **ctxpp; size_t datalen, digestlen, need = 0; char *digestbuf; int error = 0; int rv; STRUCT_INIT(crypto_digest, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "common_digest: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(crypto_digest), STRUCT_SIZE(crypto_digest)) != 0) { crypto_release_minor(cm); return (EFAULT); } data.cd_raw.iov_base = NULL; digest.cd_raw.iov_base = NULL; datalen = STRUCT_FGET(crypto_digest, cd_datalen); digestlen = STRUCT_FGET(crypto_digest, cd_digestlen); /* * Don't allocate output buffer unless both buffer pointer and * buffer length are not NULL or 0 (length). */ digestbuf = STRUCT_FGETP(crypto_digest, cd_digestbuf); if (digestbuf == NULL || digestlen == 0) { digestlen = 0; } if (datalen > crypto_max_buffer_len || digestlen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "common_digest: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } need = datalen + digestlen; if ((rv = crypto_buffer_check(need, &projp)) != CRYPTO_SUCCESS) { need = 0; goto release_minor; } INIT_RAW_CRYPTO_DATA(data, datalen); if (datalen != 0 && copyin(STRUCT_FGETP(crypto_digest, cd_databuf), data.cd_raw.iov_base, datalen) != 0) { error = EFAULT; goto release_minor; } INIT_RAW_CRYPTO_DATA(digest, digestlen); session_id = STRUCT_FGET(crypto_digest, cd_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } ASSERT(single == crypto_digest_single || single == crypto_sign_single || single == crypto_verify_recover_single || single == crypto_sign_recover_single); if (single == crypto_digest_single) { ctxpp = &sp->sd_digest_ctx; } else if (single == crypto_sign_single) { ctxpp = &sp->sd_sign_ctx; } else if (single == crypto_verify_recover_single) { ctxpp = &sp->sd_verify_recover_ctx; } else { ctxpp = &sp->sd_sign_recover_ctx; } rv = (single)(*ctxpp, &data, &digest, NULL); if (KCF_CONTEXT_DONE(rv)) *ctxpp = NULL; CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS) { ASSERT(digest.cd_length <= digestlen); if (digest.cd_length != 0 && copyout(digest.cd_raw.iov_base, digestbuf, digest.cd_length) != 0) { error = EFAULT; goto release_minor; } STRUCT_FSET(crypto_digest, cd_digestlen, digest.cd_length); } if (rv == CRYPTO_BUFFER_TOO_SMALL) { /* * The providers return CRYPTO_BUFFER_TOO_SMALL even for case 1 * of section 11.2 of the pkcs11 spec. We catch it here and * provide the correct pkcs11 return value. */ if (STRUCT_FGETP(crypto_digest, cd_digestbuf) == NULL) rv = CRYPTO_SUCCESS; STRUCT_FSET(crypto_digest, cd_digestlen, digest.cd_length); } release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (data.cd_raw.iov_base != NULL) kmem_free(data.cd_raw.iov_base, datalen); if (digest.cd_raw.iov_base != NULL) kmem_free(digest.cd_raw.iov_base, digestlen); if (error != 0) return (error); STRUCT_FSET(crypto_digest, cd_return_value, rv); if (copyout(STRUCT_BUF(crypto_digest), arg, STRUCT_SIZE(crypto_digest)) != 0) { return (EFAULT); } return (0); } /* * A helper function that does what the name suggests. * Returns 0 on success and non-zero otherwise. * On failure, out_pin is set to 0. */ int get_pin_and_session_ptr(char *in_pin, char **out_pin, size_t pin_len, crypto_minor_t *cm, crypto_session_id_t sid, crypto_session_data_t **sp, int *rv, int *error) { char *tmp_pin = NULL; int tmp_error = 0, tmp_rv = 0; if (pin_len > KCF_MAX_PIN_LEN) { tmp_rv = CRYPTO_PIN_LEN_RANGE; goto out; } tmp_pin = kmem_alloc(pin_len, KM_SLEEP); if (pin_len != 0 && copyin(in_pin, tmp_pin, pin_len) != 0) { tmp_error = EFAULT; goto out; } (void) get_session_ptr(sid, cm, sp, &tmp_error, &tmp_rv); out: *out_pin = tmp_pin; *rv = tmp_rv; *error = tmp_error; return (tmp_rv | tmp_error); } /* ARGSUSED */ static int set_pin(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_set_pin, set_pin); kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_minor_t *cm; crypto_session_data_t *sp; char *old_pin = NULL; char *new_pin = NULL; size_t old_pin_len; size_t new_pin_len; int error = 0; int rv; STRUCT_INIT(set_pin, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "set_pin: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(set_pin), STRUCT_SIZE(set_pin)) != 0) { crypto_release_minor(cm); return (EFAULT); } old_pin_len = STRUCT_FGET(set_pin, sp_old_len); if (get_pin_and_session_ptr(STRUCT_FGETP(set_pin, sp_old_pin), &old_pin, old_pin_len, cm, STRUCT_FGET(set_pin, sp_session), &sp, &rv, &error) != 0) goto release_minor; new_pin_len = STRUCT_FGET(set_pin, sp_new_len); if (new_pin_len > KCF_MAX_PIN_LEN) { rv = CRYPTO_PIN_LEN_RANGE; goto out; } new_pin = kmem_alloc(new_pin_len, KM_SLEEP); if (new_pin_len != 0 && copyin(STRUCT_FGETP(set_pin, sp_new_pin), new_pin, new_pin_len) != 0) { error = EFAULT; goto out; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(provider_ops), CRYPTO_PROVIDER_OFFSET(set_pin), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } KCF_WRAP_PROVMGMT_OPS_PARAMS(¶ms, KCF_OP_MGMT_SETPIN, sp->sd_provider_session->ps_session, old_pin, old_pin_len, new_pin, new_pin_len, NULL, NULL, real_provider); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); release_minor: crypto_release_minor(cm); if (old_pin != NULL) { bzero(old_pin, old_pin_len); kmem_free(old_pin, old_pin_len); } if (new_pin != NULL) { bzero(new_pin, new_pin_len); kmem_free(new_pin, new_pin_len); } if (error != 0) return (error); STRUCT_FSET(set_pin, sp_return_value, rv); if (copyout(STRUCT_BUF(set_pin), arg, STRUCT_SIZE(set_pin)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int login(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_login, login); kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_minor_t *cm; crypto_session_data_t *sp; size_t pin_len; char *pin; uint_t user_type; int error = 0; int rv; STRUCT_INIT(login, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "login: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(login), STRUCT_SIZE(login)) != 0) { crypto_release_minor(cm); return (EFAULT); } user_type = STRUCT_FGET(login, co_user_type); pin_len = STRUCT_FGET(login, co_pin_len); if (get_pin_and_session_ptr(STRUCT_FGETP(login, co_pin), &pin, pin_len, cm, STRUCT_FGET(login, co_session), &sp, &rv, &error) != 0) { if (rv == CRYPTO_PIN_LEN_RANGE) rv = CRYPTO_PIN_INCORRECT; goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(session_ops), CRYPTO_SESSION_OFFSET(session_login), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } KCF_WRAP_SESSION_OPS_PARAMS(¶ms, KCF_OP_SESSION_LOGIN, NULL, sp->sd_provider_session->ps_session, user_type, pin, pin_len, real_provider); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); release_minor: crypto_release_minor(cm); if (pin != NULL) { bzero(pin, pin_len); kmem_free(pin, pin_len); } if (error != 0) return (error); STRUCT_FSET(login, co_return_value, rv); if (copyout(STRUCT_BUF(login), arg, STRUCT_SIZE(login)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int logout(dev_t dev, caddr_t arg, int mode, int *rval) { crypto_logout_t logout; kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_minor_t *cm; crypto_session_data_t *sp; int error = 0; int rv; if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "logout: failed holding minor"); return (ENXIO); } if (copyin(arg, &logout, sizeof (logout)) != 0) { crypto_release_minor(cm); return (EFAULT); } if (!get_session_ptr(logout.cl_session, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(session_ops), CRYPTO_SESSION_OFFSET(session_logout), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } KCF_WRAP_SESSION_OPS_PARAMS(¶ms, KCF_OP_SESSION_LOGOUT, NULL, sp->sd_provider_session->ps_session, 0, NULL, 0, real_provider); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); release_minor: crypto_release_minor(cm); if (error != 0) return (error); logout.cl_return_value = rv; if (copyout(&logout, arg, sizeof (logout)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int sign_init(dev_t dev, caddr_t arg, int mode, int *rval) { return (sign_verify_init(dev, arg, mode, crypto_sign_init_prov)); } /* ARGSUSED */ static int sign_recover_init(dev_t dev, caddr_t arg, int mode, int *rval) { return (sign_verify_init(dev, arg, mode, crypto_sign_recover_init_prov)); } /* ARGSUSED */ static int verify_init(dev_t dev, caddr_t arg, int mode, int *rval) { return (sign_verify_init(dev, arg, mode, crypto_verify_init_prov)); } /* ARGSUSED */ static int verify_recover_init(dev_t dev, caddr_t arg, int mode, int *rval) { return (sign_verify_init(dev, arg, mode, crypto_verify_recover_init_prov)); } /* * ASSUMPTION: crypto_sign_init, crypto_verify_init, crypto_sign_recover_init, * and crypto_verify_recover_init structures are identical * except for field names. */ static int sign_verify_init(dev_t dev, caddr_t arg, int mode, int (*init)(crypto_provider_t, crypto_session_id_t, crypto_mechanism_t *, crypto_key_t *, crypto_ctx_template_t, crypto_context_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_sign_init, sign_init); kproject_t *mech_projp, *key_projp; kcf_provider_desc_t *real_provider = NULL; crypto_session_id_t session_id; crypto_mechanism_t mech; crypto_key_t key; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_context_t cc; crypto_ctx_t **ctxpp; size_t mech_rctl_bytes = 0; size_t key_rctl_bytes = 0; size_t carry; int error = 0; int rv; boolean_t allocated_by_crypto_module = B_FALSE; crypto_func_group_t fg; STRUCT_INIT(sign_init, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "sign_verify_init: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(sign_init), STRUCT_SIZE(sign_init)) != 0) { crypto_release_minor(cm); return (EFAULT); } mech.cm_param = NULL; bzero(&key, sizeof (key)); session_id = STRUCT_FGET(sign_init, si_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(sign_init, si_mech), &mech.cm_type, sizeof (crypto_mech_type_t)); ASSERT(init == crypto_sign_init_prov || init == crypto_verify_init_prov || init == crypto_sign_recover_init_prov || init == crypto_verify_recover_init_prov); if (init == crypto_sign_init_prov) { fg = CRYPTO_FG_SIGN; ctxpp = &sp->sd_sign_ctx; } else if (init == crypto_verify_init_prov) { fg = CRYPTO_FG_VERIFY; ctxpp = &sp->sd_verify_ctx; } else if (init == crypto_sign_recover_init_prov) { fg = CRYPTO_FG_SIGN_RECOVER; ctxpp = &sp->sd_sign_recover_ctx; } else { fg = CRYPTO_FG_VERIFY_RECOVER; ctxpp = &sp->sd_verify_recover_ctx; } if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, fg)) != CRYPTO_SUCCESS) { goto out; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(sign_init, si_mech), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(sign_init, si_mech), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto out; } } else { if (rv != CRYPTO_SUCCESS) goto out; } if (!copyin_key(mode, STRUCT_FADDR(sign_init, si_key), &key, &key_rctl_bytes, &rv, &error, carry, &key_projp)) { goto out; } rv = (init)(real_provider, sp->sd_provider_session->ps_session, &mech, &key, NULL, &cc, NULL); /* * Check if a context already exists. If so, it means it is being * abandoned. So, cancel it to avoid leaking it. */ if (*ctxpp != NULL) CRYPTO_CANCEL_CTX(ctxpp); *ctxpp = (rv == CRYPTO_SUCCESS) ? cc : NULL; out: CRYPTO_SESSION_RELE(sp); release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(key_rctl_bytes, key_projp); mutex_exit(&crypto_rctl_lock); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } free_crypto_key(&key); if (error != 0) return (error); STRUCT_FSET(sign_init, si_return_value, rv); if (copyout(STRUCT_BUF(sign_init), arg, STRUCT_SIZE(sign_init)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int sign(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_digest(dev, arg, mode, crypto_sign_single)); } /* ARGSUSED */ static int sign_recover(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_digest(dev, arg, mode, crypto_sign_recover_single)); } /* ARGSUSED */ static int verify(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_verify, verify); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_data_t data, sign; size_t datalen, signlen, need = 0; int error = 0; int rv; STRUCT_INIT(verify, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "verify: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(verify), STRUCT_SIZE(verify)) != 0) { crypto_release_minor(cm); return (EFAULT); } data.cd_raw.iov_base = NULL; sign.cd_raw.iov_base = NULL; datalen = STRUCT_FGET(verify, cv_datalen); signlen = STRUCT_FGET(verify, cv_signlen); if (datalen > crypto_max_buffer_len || signlen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "verify: buffer greater than %ld bytes, " "pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } need = datalen + signlen; if ((rv = crypto_buffer_check(need, &projp)) != CRYPTO_SUCCESS) { need = 0; goto release_minor; } INIT_RAW_CRYPTO_DATA(data, datalen); INIT_RAW_CRYPTO_DATA(sign, signlen); if (datalen != 0 && copyin(STRUCT_FGETP(verify, cv_databuf), data.cd_raw.iov_base, datalen) != 0) { error = EFAULT; goto release_minor; } if (signlen != 0 && copyin(STRUCT_FGETP(verify, cv_signbuf), sign.cd_raw.iov_base, signlen) != 0) { error = EFAULT; goto release_minor; } session_id = STRUCT_FGET(verify, cv_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } rv = crypto_verify_single(sp->sd_verify_ctx, &data, &sign, NULL); if (KCF_CONTEXT_DONE(rv)) sp->sd_verify_ctx = NULL; CRYPTO_SESSION_RELE(sp); release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (data.cd_raw.iov_base != NULL) kmem_free(data.cd_raw.iov_base, datalen); if (sign.cd_raw.iov_base != NULL) kmem_free(sign.cd_raw.iov_base, signlen); if (error != 0) return (error); STRUCT_FSET(verify, cv_return_value, rv); if (copyout(STRUCT_BUF(verify), arg, STRUCT_SIZE(verify)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int verify_recover(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_digest(dev, arg, mode, crypto_verify_recover_single)); } /* ARGSUSED */ static int sign_update(dev_t dev, caddr_t arg, int mode, int *rval) { return (sign_verify_update(dev, arg, mode, crypto_sign_update)); } /* ARGSUSED */ static int verify_update(dev_t dev, caddr_t arg, int mode, int *rval) { return (sign_verify_update(dev, arg, mode, crypto_verify_update)); } /* * ASSUMPTION: crypto_sign_update and crypto_verify_update structures * are identical except for field names. */ static int sign_verify_update(dev_t dev, caddr_t arg, int mode, int (*update)(crypto_context_t, crypto_data_t *, crypto_call_req_t *)) { STRUCT_DECL(crypto_sign_update, sign_update); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_ctx_t **ctxpp; crypto_data_t data; size_t datalen, need = 0; int error = 0; int rv; STRUCT_INIT(sign_update, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "sign_verify_update: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(sign_update), STRUCT_SIZE(sign_update)) != 0) { crypto_release_minor(cm); return (EFAULT); } data.cd_raw.iov_base = NULL; datalen = STRUCT_FGET(sign_update, su_datalen); if (datalen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "sign_verify_update: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(datalen, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } need = datalen; INIT_RAW_CRYPTO_DATA(data, datalen); if (datalen != 0 && copyin(STRUCT_FGETP(sign_update, su_databuf), data.cd_raw.iov_base, datalen) != 0) { error = EFAULT; goto release_minor; } session_id = STRUCT_FGET(sign_update, su_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } ctxpp = (update == crypto_sign_update) ? &sp->sd_sign_ctx : &sp->sd_verify_ctx; rv = (update)(*ctxpp, &data, NULL); if (rv != CRYPTO_SUCCESS) CRYPTO_CANCEL_CTX(ctxpp); CRYPTO_SESSION_RELE(sp); release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (data.cd_raw.iov_base != NULL) kmem_free(data.cd_raw.iov_base, datalen); if (error != 0) return (error); STRUCT_FSET(sign_update, su_return_value, rv); if (copyout(STRUCT_BUF(sign_update), arg, STRUCT_SIZE(sign_update)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int sign_final(dev_t dev, caddr_t arg, int mode, int *rval) { return (common_final(dev, arg, mode, crypto_sign_final)); } /* * Can't use the common final because it does a copyout of * the final part. */ /* ARGSUSED */ static int verify_final(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_verify_final, verify_final); kproject_t *projp; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_data_t sign; size_t signlen, need = 0; int error = 0; int rv; STRUCT_INIT(verify_final, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "verify_final: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(verify_final), STRUCT_SIZE(verify_final)) != 0) { crypto_release_minor(cm); return (EFAULT); } sign.cd_raw.iov_base = NULL; signlen = STRUCT_FGET(verify_final, vf_signlen); if (signlen > crypto_max_buffer_len) { cmn_err(CE_NOTE, "verify_final: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(signlen, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } need = signlen; INIT_RAW_CRYPTO_DATA(sign, signlen); if (signlen != 0 && copyin(STRUCT_FGETP(verify_final, vf_signbuf), sign.cd_raw.iov_base, signlen) != 0) { error = EFAULT; goto release_minor; } session_id = STRUCT_FGET(verify_final, vf_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } rv = crypto_verify_final(sp->sd_verify_ctx, &sign, NULL); if (KCF_CONTEXT_DONE(rv)) sp->sd_verify_ctx = NULL; CRYPTO_SESSION_RELE(sp); release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (sign.cd_raw.iov_base != NULL) kmem_free(sign.cd_raw.iov_base, signlen); if (error != 0) return (error); STRUCT_FSET(verify_final, vf_return_value, rv); if (copyout(STRUCT_BUF(verify_final), arg, STRUCT_SIZE(verify_final)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int seed_random(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_seed_random, seed_random); kproject_t *projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; uchar_t *seed_buffer = NULL; size_t seed_len; size_t need = 0; int error = 0; int rv; STRUCT_INIT(seed_random, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "seed_random: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(seed_random), STRUCT_SIZE(seed_random)) != 0) { crypto_release_minor(cm); return (EFAULT); } seed_len = STRUCT_FGET(seed_random, sr_seedlen); if (seed_len > crypto_max_buffer_len) { cmn_err(CE_NOTE, "seed_random: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(seed_len, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } need = seed_len; seed_buffer = kmem_alloc(seed_len, KM_SLEEP); if (seed_len != 0 && copyin(STRUCT_FGETP(seed_random, sr_seedbuf), seed_buffer, seed_len) != 0) { error = EFAULT; goto release_minor; } session_id = STRUCT_FGET(seed_random, sr_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(random_ops), CRYPTO_RANDOM_OFFSET(seed_random), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } KCF_WRAP_RANDOM_OPS_PARAMS(¶ms, KCF_OP_RANDOM_SEED, sp->sd_provider_session->ps_session, seed_buffer, seed_len, 0, CRYPTO_SEED_NOW); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); out: CRYPTO_SESSION_RELE(sp); release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (real_provider != NULL) KCF_PROV_REFRELE(real_provider); if (seed_buffer != NULL) kmem_free(seed_buffer, seed_len); if (error != 0) return (error); STRUCT_FSET(seed_random, sr_return_value, rv); if (copyout(STRUCT_BUF(seed_random), arg, STRUCT_SIZE(seed_random)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int generate_random(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_generate_random, generate_random); kproject_t *projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; uchar_t *buffer = NULL; size_t len; size_t need = 0; int error = 0; int rv; STRUCT_INIT(generate_random, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "generate_random: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(generate_random), STRUCT_SIZE(generate_random)) != 0) { crypto_release_minor(cm); return (EFAULT); } len = STRUCT_FGET(generate_random, gr_buflen); if (len > crypto_max_buffer_len) { cmn_err(CE_NOTE, "generate_random: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(len, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } need = len; buffer = kmem_alloc(len, KM_SLEEP); session_id = STRUCT_FGET(generate_random, gr_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(random_ops), CRYPTO_RANDOM_OFFSET(generate_random), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } KCF_WRAP_RANDOM_OPS_PARAMS(¶ms, KCF_OP_RANDOM_GENERATE, sp->sd_provider_session->ps_session, buffer, len, 0, 0); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); out: CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS) { if (len != 0 && copyout(buffer, STRUCT_FGETP(generate_random, gr_buf), len) != 0) { error = EFAULT; } } release_minor: if (need != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(need, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (real_provider != NULL) KCF_PROV_REFRELE(real_provider); if (buffer != NULL) { /* random numbers are often used to create keys */ bzero(buffer, len); kmem_free(buffer, len); } if (error != 0) return (error); STRUCT_FSET(generate_random, gr_return_value, rv); if (copyout(STRUCT_BUF(generate_random), arg, STRUCT_SIZE(generate_random)) != 0) { return (EFAULT); } return (0); } /* * Copyout a kernel array of attributes to user space. * u_attrs is the corresponding user space array containing * user space pointers necessary for the copyout. */ /* ARGSUSED */ static int copyout_attributes(int mode, caddr_t out, uint_t count, crypto_object_attribute_t *k_attrs, caddr_t u_attrs) { STRUCT_DECL(crypto_object_attribute, oa); caddr_t p, valuep; size_t value_len; size_t len; int i; int error = 0; if (count == 0) return (0); STRUCT_INIT(oa, mode); len = count * STRUCT_SIZE(oa); ASSERT(u_attrs != NULL); p = u_attrs; for (i = 0; i < count; i++) { /* can this bcopy be eliminated? */ bcopy(p, STRUCT_BUF(oa), STRUCT_SIZE(oa)); value_len = k_attrs[i].oa_value_len; STRUCT_FSET(oa, oa_type, k_attrs[i].oa_type); STRUCT_FSET(oa, oa_value_len, value_len); valuep = STRUCT_FGETP(oa, oa_value); if (valuep != NULL && value_len != -1) { if (copyout(k_attrs[i].oa_value, valuep, value_len) != 0) { error = EFAULT; goto out; } } bcopy(STRUCT_BUF(oa), p, STRUCT_SIZE(oa)); p += STRUCT_SIZE(oa); } if (copyout(u_attrs, out, len)) { error = EFAULT; } out: return (error); } /* ARGSUSED */ static int object_create(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_create, object_create); kproject_t *projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_object_attribute_t *k_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp = NULL; crypto_object_id_t object_handle; caddr_t oc_attributes; size_t k_attrs_size; size_t rctl_bytes = 0; int error = 0; int rv; uint_t count; STRUCT_INIT(object_create, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_create: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(object_create), STRUCT_SIZE(object_create)) != 0) { crypto_release_minor(cm); return (EFAULT); } count = STRUCT_FGET(object_create, oc_count); oc_attributes = STRUCT_FGETP(object_create, oc_attributes); if (!copyin_attributes(mode, count, oc_attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &rctl_bytes, 0, B_TRUE, &projp)) { goto release_minor; } session_id = STRUCT_FGET(object_create, oc_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_create), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto release_minor; } KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_CREATE, sp->sd_provider_session->ps_session, 0, k_attrs, count, &object_handle, 0, NULL, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) STRUCT_FSET(object_create, oc_handle, object_handle); release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (error != 0) goto out; STRUCT_FSET(object_create, oc_return_value, rv); if (copyout(STRUCT_BUF(object_create), arg, STRUCT_SIZE(object_create)) != 0) { if (rv == CRYPTO_SUCCESS) { KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, object_handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); error = EFAULT; } } out: if (sp != NULL) CRYPTO_SESSION_RELE(sp); crypto_release_minor(cm); if (real_provider != NULL) KCF_PROV_REFRELE(real_provider); return (error); } /* ARGSUSED */ static int object_copy(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_copy, object_copy); kproject_t *projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_object_attribute_t *k_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp = NULL; crypto_object_id_t handle, new_handle; caddr_t oc_new_attributes; size_t k_attrs_size; size_t rctl_bytes = 0; int error = 0; int rv; uint_t count; STRUCT_INIT(object_copy, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_copy: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(object_copy), STRUCT_SIZE(object_copy)) != 0) { crypto_release_minor(cm); return (EFAULT); } count = STRUCT_FGET(object_copy, oc_count); oc_new_attributes = STRUCT_FGETP(object_copy, oc_new_attributes); if (!copyin_attributes(mode, count, oc_new_attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &rctl_bytes, 0, B_TRUE, &projp)) { goto release_minor; } session_id = STRUCT_FGET(object_copy, oc_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_copy), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto release_minor; } handle = STRUCT_FGET(object_copy, oc_handle); KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_COPY, sp->sd_provider_session->ps_session, handle, k_attrs, count, &new_handle, 0, NULL, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) STRUCT_FSET(object_copy, oc_new_handle, new_handle); release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (error != 0) goto out; STRUCT_FSET(object_copy, oc_return_value, rv); if (copyout(STRUCT_BUF(object_copy), arg, STRUCT_SIZE(object_copy)) != 0) { if (rv == CRYPTO_SUCCESS) { KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, new_handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); error = EFAULT; } } out: if (sp != NULL) CRYPTO_SESSION_RELE(sp); crypto_release_minor(cm); if (real_provider != NULL) KCF_PROV_REFRELE(real_provider); return (error); } /* ARGSUSED */ static int object_destroy(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_destroy, object_destroy); kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_object_id_t handle; int error = 0; int rv; STRUCT_INIT(object_destroy, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_destroy: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(object_destroy), STRUCT_SIZE(object_destroy)) != 0) { crypto_release_minor(cm); return (EFAULT); } session_id = STRUCT_FGET(object_destroy, od_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_destroy), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } handle = STRUCT_FGET(object_destroy, od_handle); KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); release_minor: crypto_release_minor(cm); if (error != 0) return (error); STRUCT_FSET(object_destroy, od_return_value, rv); if (copyout(STRUCT_BUF(object_destroy), arg, STRUCT_SIZE(object_destroy)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_get_attribute_value(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_get_attribute_value, get_attribute_value); /* LINTED E_FUNC_SET_NOT_USED */ STRUCT_DECL(crypto_object_attribute, oa); kproject_t *projp; kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_object_attribute_t *k_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_object_id_t handle; caddr_t og_attributes; caddr_t u_attrs; size_t k_attrs_size; size_t rctl_bytes = 0; int error = 0; int rv; uint_t count; STRUCT_INIT(get_attribute_value, mode); STRUCT_INIT(oa, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_get_attribute_value: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(get_attribute_value), STRUCT_SIZE(get_attribute_value)) != 0) { crypto_release_minor(cm); return (EFAULT); } count = STRUCT_FGET(get_attribute_value, og_count); og_attributes = STRUCT_FGETP(get_attribute_value, og_attributes); if (!copyin_attributes(mode, count, og_attributes, &k_attrs, &k_attrs_size, &u_attrs, &rv, &error, &rctl_bytes, 0, B_FALSE, &projp)) { goto release_minor; } session_id = STRUCT_FGET(get_attribute_value, og_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_get_attribute_value), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } handle = STRUCT_FGET(get_attribute_value, og_handle); KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_GET_ATTRIBUTE_VALUE, sp->sd_provider_session->ps_session, handle, k_attrs, count, NULL, 0, NULL, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS || rv == CRYPTO_ATTRIBUTE_SENSITIVE || rv == CRYPTO_ATTRIBUTE_TYPE_INVALID || rv == CRYPTO_BUFFER_TOO_SMALL) { error = copyout_attributes(mode, STRUCT_FGETP(get_attribute_value, og_attributes), count, k_attrs, u_attrs); } release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (u_attrs != NULL) kmem_free(u_attrs, count * STRUCT_SIZE(oa)); if (error != 0) return (error); STRUCT_FSET(get_attribute_value, og_return_value, rv); if (copyout(STRUCT_BUF(get_attribute_value), arg, STRUCT_SIZE(get_attribute_value)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_get_size(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_get_size, object_get_size); kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_object_id_t handle; size_t size; int error = 0; int rv; STRUCT_INIT(object_get_size, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_get_size: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(object_get_size), STRUCT_SIZE(object_get_size)) != 0) { crypto_release_minor(cm); return (EFAULT); } session_id = STRUCT_FGET(object_get_size, gs_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_get_size), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } handle = STRUCT_FGET(object_get_size, gs_handle); KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_GET_SIZE, sp->sd_provider_session->ps_session, handle, NULL, 0, NULL, &size, NULL, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS) { STRUCT_FSET(object_get_size, gs_size, size); } release_minor: crypto_release_minor(cm); if (error != 0) return (error); STRUCT_FSET(object_get_size, gs_return_value, rv); if (copyout(STRUCT_BUF(object_get_size), arg, STRUCT_SIZE(object_get_size)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_set_attribute_value(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_set_attribute_value, set_attribute_value); kproject_t *projp; kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_object_attribute_t *k_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_object_id_t object_handle; caddr_t sa_attributes; size_t k_attrs_size; size_t rctl_bytes = 0; int error = 0; int rv; uint_t count; STRUCT_INIT(set_attribute_value, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_set_attribute_value: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(set_attribute_value), STRUCT_SIZE(set_attribute_value)) != 0) { crypto_release_minor(cm); return (EFAULT); } count = STRUCT_FGET(set_attribute_value, sa_count); sa_attributes = STRUCT_FGETP(set_attribute_value, sa_attributes); if (!copyin_attributes(mode, count, sa_attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &rctl_bytes, 0, B_TRUE, &projp)) { goto release_minor; } session_id = STRUCT_FGET(set_attribute_value, sa_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_set_attribute_value), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } object_handle = STRUCT_FGET(set_attribute_value, sa_handle); KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_SET_ATTRIBUTE_VALUE, sp->sd_provider_session->ps_session, object_handle, k_attrs, count, NULL, 0, NULL, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (error != 0) return (error); STRUCT_FSET(set_attribute_value, sa_return_value, rv); if (copyout(STRUCT_BUF(set_attribute_value), arg, STRUCT_SIZE(set_attribute_value)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_find_init(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_find_init, find_init); kproject_t *projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_object_attribute_t *k_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; caddr_t attributes; size_t k_attrs_size; size_t rctl_bytes = 0; int error = 0; int rv; uint_t count; void *cookie; STRUCT_INIT(find_init, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_find_init: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(find_init), STRUCT_SIZE(find_init)) != 0) { crypto_release_minor(cm); return (EFAULT); } count = STRUCT_FGET(find_init, fi_count); attributes = STRUCT_FGETP(find_init, fi_attributes); if (!copyin_attributes(mode, count, attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &rctl_bytes, 0, B_TRUE, &projp)) { goto release_minor; } session_id = STRUCT_FGET(find_init, fi_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_find_init), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } /* check for an active find */ if (sp->sd_find_init_cookie != NULL) { rv = CRYPTO_OPERATION_IS_ACTIVE; CRYPTO_SESSION_RELE(sp); goto release_minor; } KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_FIND_INIT, sp->sd_provider_session->ps_session, 0, k_attrs, count, NULL, 0, &cookie, NULL, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) { /* * The cookie is allocated by a provider at the start of an * object search. It is freed when the search is terminated * by a final operation, or when the session is closed. * It contains state information about which object handles * have been returned to the caller. */ sp->sd_find_init_cookie = cookie; } out: CRYPTO_SESSION_RELE(sp); release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (real_provider != NULL) KCF_PROV_REFRELE(real_provider); if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (error != 0) return (error); STRUCT_FSET(find_init, fi_return_value, rv); if (copyout(STRUCT_BUF(find_init), arg, STRUCT_SIZE(find_init)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_find_update(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_find_update, find_update); kproject_t *projp; kcf_provider_desc_t *real_provider; kcf_req_params_t params; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_object_id_t *buffer = NULL; crypto_session_id_t session_id; size_t len, rctl_bytes = 0; uint_t count, max_count; int rv, error = 0; STRUCT_INIT(find_update, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_find_update: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(find_update), STRUCT_SIZE(find_update)) != 0) { crypto_release_minor(cm); return (EFAULT); } max_count = STRUCT_FGET(find_update, fu_max_count); if (max_count > CRYPTO_MAX_FIND_COUNT) { cmn_err(CE_NOTE, "object_find_update: count greater than %d, " "pid = %d", CRYPTO_MAX_FIND_COUNT, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } len = max_count * sizeof (crypto_object_id_t); if ((rv = crypto_buffer_check(len, &projp)) != CRYPTO_SUCCESS) { goto release_minor; } rctl_bytes = len; buffer = kmem_alloc(len, KM_SLEEP); session_id = STRUCT_FGET(find_update, fu_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_find), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { goto out; } KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_FIND, sp->sd_provider_session->ps_session, 0, NULL, 0, buffer, 0, NULL, sp->sd_find_init_cookie, max_count, &count); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); out: CRYPTO_SESSION_RELE(sp); if (rv == CRYPTO_SUCCESS) { if (count > max_count) { /* bad bad provider */ rv = CRYPTO_FAILED; goto release_minor; } if (count != 0) { /* copyout handles */ if (copyout(buffer, STRUCT_FGETP(find_update, fu_handles), count * sizeof (crypto_object_id_t)) != 0) { error = EFAULT; } } STRUCT_FSET(find_update, fu_count, count); } release_minor: if (rctl_bytes != 0) { mutex_enter(&crypto_rctl_lock); CRYPTO_DECREMENT_RCTL(rctl_bytes, projp); mutex_exit(&crypto_rctl_lock); } crypto_release_minor(cm); if (buffer != NULL) kmem_free(buffer, len); if (error != 0) return (error); STRUCT_FSET(find_update, fu_return_value, rv); if (copyout(STRUCT_BUF(find_update), arg, STRUCT_SIZE(find_update)) != 0) { return (EFAULT); } return (0); } /* * Free provider-allocated storage used for find object searches. */ static int crypto_free_find_ctx(crypto_session_data_t *sp) { kcf_provider_desc_t *real_provider; kcf_req_params_t params; int rv; if ((rv = kcf_get_hardware_provider_nomech( CRYPTO_OPS_OFFSET(object_ops), CRYPTO_OBJECT_OFFSET(object_find_final), CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider)) != CRYPTO_SUCCESS) { return (rv); } KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_FIND_FINAL, sp->sd_provider_session->ps_session, 0, NULL, 0, NULL, 0, NULL, sp->sd_find_init_cookie, 0, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_PROV_REFRELE(real_provider); return (rv); } /* ARGSUSED */ static int object_find_final(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_find_final, object_find_final); crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; int error = 0; int rv; STRUCT_INIT(object_find_final, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_find_final: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(object_find_final), STRUCT_SIZE(object_find_final)) != 0) { crypto_release_minor(cm); return (EFAULT); } session_id = STRUCT_FGET(object_find_final, ff_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } if ((rv = crypto_free_find_ctx(sp)) == CRYPTO_SUCCESS) { sp->sd_find_init_cookie = NULL; } CRYPTO_SESSION_RELE(sp); release_minor: crypto_release_minor(cm); if (error != 0) return (error); STRUCT_FSET(object_find_final, ff_return_value, rv); if (copyout(STRUCT_BUF(object_find_final), arg, STRUCT_SIZE(object_find_final)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_generate_key(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_generate_key, generate_key); kproject_t *mech_projp, *key_projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_mechanism_t mech; crypto_object_attribute_t *k_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp = NULL; crypto_object_id_t key_handle; caddr_t attributes; size_t k_attrs_size; size_t mech_rctl_bytes = 0, key_rctl_bytes = 0; size_t carry; uint_t count; int error = 0; int rv; boolean_t allocated_by_crypto_module = B_FALSE; STRUCT_INIT(generate_key, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_generate_key: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(generate_key), STRUCT_SIZE(generate_key)) != 0) { crypto_release_minor(cm); return (EFAULT); } session_id = STRUCT_FGET(generate_key, gk_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(generate_key, gk_mechanism), &mech.cm_type, sizeof (crypto_mech_type_t)); if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, CRYPTO_FG_GENERATE)) != CRYPTO_SUCCESS) { goto release_minor; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(generate_key, gk_mechanism), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(generate_key, gk_mechanism), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto release_minor; } } else { if (rv != CRYPTO_SUCCESS) goto release_minor; } count = STRUCT_FGET(generate_key, gk_count); attributes = STRUCT_FGETP(generate_key, gk_attributes); if (!copyin_attributes(mode, count, attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &key_rctl_bytes, carry, B_TRUE, &key_projp)) { goto release_minor; } KCF_WRAP_KEY_OPS_PARAMS(¶ms, KCF_OP_KEY_GENERATE, sp->sd_provider_session->ps_session, &mech, k_attrs, count, &key_handle, NULL, 0, NULL, NULL, NULL, 0); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) STRUCT_FSET(generate_key, gk_handle, key_handle); release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(key_rctl_bytes, key_projp); mutex_exit(&crypto_rctl_lock); if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (error != 0) goto out; STRUCT_FSET(generate_key, gk_return_value, rv); if (copyout(STRUCT_BUF(generate_key), arg, STRUCT_SIZE(generate_key)) != 0) { if (rv == CRYPTO_SUCCESS) { KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, key_handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); error = EFAULT; } } out: if (sp != NULL) CRYPTO_SESSION_RELE(sp); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } return (error); } /* ARGSUSED */ static int object_generate_key_pair(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_generate_key_pair, generate_key_pair); kproject_t *pub_projp, *pri_projp, *mech_projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_mechanism_t mech; crypto_object_attribute_t *k_pub_attrs = NULL; crypto_object_attribute_t *k_pri_attrs = NULL; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp = NULL; crypto_object_id_t pub_handle; crypto_object_id_t pri_handle; caddr_t pri_attributes; caddr_t pub_attributes; size_t k_pub_attrs_size, k_pri_attrs_size; size_t mech_rctl_bytes = 0; size_t pub_rctl_bytes = 0; size_t pri_rctl_bytes = 0; size_t carry; uint_t pub_count; uint_t pri_count; int error = 0; int rv; boolean_t allocated_by_crypto_module = B_FALSE; STRUCT_INIT(generate_key_pair, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_generate_key_pair: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(generate_key_pair), STRUCT_SIZE(generate_key_pair)) != 0) { crypto_release_minor(cm); return (EFAULT); } session_id = STRUCT_FGET(generate_key_pair, kp_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(generate_key_pair, kp_mechanism), &mech.cm_type, sizeof (crypto_mech_type_t)); if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, CRYPTO_FG_GENERATE_KEY_PAIR)) != CRYPTO_SUCCESS) { goto release_minor; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(generate_key_pair, kp_mechanism), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(generate_key_pair, kp_mechanism), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto release_minor; } } else { if (rv != CRYPTO_SUCCESS) goto release_minor; } pub_count = STRUCT_FGET(generate_key_pair, kp_public_count); pri_count = STRUCT_FGET(generate_key_pair, kp_private_count); pub_attributes = STRUCT_FGETP(generate_key_pair, kp_public_attributes); if (!copyin_attributes(mode, pub_count, pub_attributes, &k_pub_attrs, &k_pub_attrs_size, NULL, &rv, &error, &pub_rctl_bytes, carry, B_TRUE, &pub_projp)) { goto release_minor; } pri_attributes = STRUCT_FGETP(generate_key_pair, kp_private_attributes); if (!copyin_attributes(mode, pri_count, pri_attributes, &k_pri_attrs, &k_pri_attrs_size, NULL, &rv, &error, &pri_rctl_bytes, 0, B_TRUE, &pri_projp)) { goto release_minor; } KCF_WRAP_KEY_OPS_PARAMS(¶ms, KCF_OP_KEY_GENERATE_PAIR, sp->sd_provider_session->ps_session, &mech, k_pub_attrs, pub_count, &pub_handle, k_pri_attrs, pri_count, &pri_handle, NULL, NULL, 0); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) { STRUCT_FSET(generate_key_pair, kp_public_handle, pub_handle); STRUCT_FSET(generate_key_pair, kp_private_handle, pri_handle); } release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (pub_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(pub_rctl_bytes, pub_projp); if (pri_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(pri_rctl_bytes, pri_projp); mutex_exit(&crypto_rctl_lock); if (k_pub_attrs != NULL) kmem_free(k_pub_attrs, k_pub_attrs_size); if (k_pri_attrs != NULL) kmem_free(k_pri_attrs, k_pri_attrs_size); if (error != 0) goto out; STRUCT_FSET(generate_key_pair, kp_return_value, rv); if (copyout(STRUCT_BUF(generate_key_pair), arg, STRUCT_SIZE(generate_key_pair)) != 0) { if (rv == CRYPTO_SUCCESS) { KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, pub_handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, pri_handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); error = EFAULT; } } out: if (sp != NULL) CRYPTO_SESSION_RELE(sp); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } return (error); } /* ARGSUSED */ static int object_wrap_key(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_wrap_key, wrap_key); kproject_t *mech_projp, *key_projp, *wrapped_key_projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_mechanism_t mech; crypto_key_t key; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp; crypto_object_id_t handle; size_t mech_rctl_bytes = 0, key_rctl_bytes = 0; size_t wrapped_key_rctl_bytes = 0; size_t carry; size_t wrapped_key_len, new_wrapped_key_len; uchar_t *wrapped_key = NULL; char *wrapped_key_buffer; int error = 0; int rv; boolean_t allocated_by_crypto_module = B_FALSE; STRUCT_INIT(wrap_key, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_wrap_key: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(wrap_key), STRUCT_SIZE(wrap_key)) != 0) { crypto_release_minor(cm); return (EFAULT); } bzero(&key, sizeof (crypto_key_t)); session_id = STRUCT_FGET(wrap_key, wk_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(wrap_key, wk_mechanism), &mech.cm_type, sizeof (crypto_mech_type_t)); if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, CRYPTO_FG_WRAP)) != CRYPTO_SUCCESS) { goto out; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(wrap_key, wk_mechanism), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(wrap_key, wk_mechanism), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto out; } } else { if (rv != CRYPTO_SUCCESS) goto out; } if (!copyin_key(mode, STRUCT_FADDR(wrap_key, wk_wrapping_key), &key, &key_rctl_bytes, &rv, &error, carry, &key_projp)) { goto out; } wrapped_key_len = STRUCT_FGET(wrap_key, wk_wrapped_key_len); /* * Don't allocate output buffer unless both buffer pointer and * buffer length are not NULL or 0 (length). */ wrapped_key_buffer = STRUCT_FGETP(wrap_key, wk_wrapped_key); if (wrapped_key_buffer == NULL || wrapped_key_len == 0) { wrapped_key_len = 0; } if (wrapped_key_len > crypto_max_buffer_len) { cmn_err(CE_NOTE, "object_wrap_key: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto out; } if ((rv = crypto_buffer_check(wrapped_key_len, &wrapped_key_projp)) != CRYPTO_SUCCESS) { goto out; } /* new_wrapped_key_len can be modified by the provider */ wrapped_key_rctl_bytes = new_wrapped_key_len = wrapped_key_len; wrapped_key = kmem_alloc(wrapped_key_len, KM_SLEEP); handle = STRUCT_FGET(wrap_key, wk_object_handle); KCF_WRAP_KEY_OPS_PARAMS(¶ms, KCF_OP_KEY_WRAP, sp->sd_provider_session->ps_session, &mech, NULL, 0, &handle, NULL, 0, NULL, &key, wrapped_key, &new_wrapped_key_len); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) { if (wrapped_key_len != 0 && copyout(wrapped_key, wrapped_key_buffer, new_wrapped_key_len) != 0) { error = EFAULT; } STRUCT_FSET(wrap_key, wk_wrapped_key_len, new_wrapped_key_len); } if (rv == CRYPTO_BUFFER_TOO_SMALL) { /* * The providers return CRYPTO_BUFFER_TOO_SMALL even for case 1 * of section 11.2 of the pkcs11 spec. We catch it here and * provide the correct pkcs11 return value. */ if (STRUCT_FGETP(wrap_key, wk_wrapped_key) == NULL) rv = CRYPTO_SUCCESS; STRUCT_FSET(wrap_key, wk_wrapped_key_len, new_wrapped_key_len); } out: CRYPTO_SESSION_RELE(sp); release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(key_rctl_bytes, key_projp); if (wrapped_key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(wrapped_key_rctl_bytes, wrapped_key_projp); mutex_exit(&crypto_rctl_lock); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } if (wrapped_key != NULL) kmem_free(wrapped_key, wrapped_key_len); free_crypto_key(&key); if (error != 0) return (error); STRUCT_FSET(wrap_key, wk_return_value, rv); if (copyout(STRUCT_BUF(wrap_key), arg, STRUCT_SIZE(wrap_key)) != 0) { return (EFAULT); } return (0); } /* ARGSUSED */ static int object_unwrap_key(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_object_unwrap_key, unwrap_key); kproject_t *mech_projp, *unwrapping_key_projp, *wrapped_key_projp, *k_attrs_projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_mechanism_t mech; crypto_key_t unwrapping_key; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp = NULL; crypto_object_id_t handle; crypto_object_attribute_t *k_attrs = NULL; size_t k_attrs_size; size_t mech_rctl_bytes = 0, unwrapping_key_rctl_bytes = 0; size_t wrapped_key_rctl_bytes = 0, k_attrs_rctl_bytes = 0; size_t carry; size_t wrapped_key_len; uchar_t *wrapped_key = NULL; int error = 0; int rv; uint_t count; caddr_t uk_attributes; boolean_t allocated_by_crypto_module = B_FALSE; STRUCT_INIT(unwrap_key, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_unwrap_key: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(unwrap_key), STRUCT_SIZE(unwrap_key)) != 0) { crypto_release_minor(cm); return (EFAULT); } bzero(&unwrapping_key, sizeof (unwrapping_key)); session_id = STRUCT_FGET(unwrap_key, uk_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(unwrap_key, uk_mechanism), &mech.cm_type, sizeof (crypto_mech_type_t)); if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, CRYPTO_FG_UNWRAP)) != CRYPTO_SUCCESS) { goto release_minor; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(unwrap_key, uk_mechanism), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(unwrap_key, uk_mechanism), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto release_minor; } } else { if (rv != CRYPTO_SUCCESS) goto release_minor; } if (!copyin_key(mode, STRUCT_FADDR(unwrap_key, uk_unwrapping_key), &unwrapping_key, &unwrapping_key_rctl_bytes, &rv, &error, carry, &unwrapping_key_projp)) { goto release_minor; } count = STRUCT_FGET(unwrap_key, uk_count); uk_attributes = STRUCT_FGETP(unwrap_key, uk_attributes); if (!copyin_attributes(mode, count, uk_attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &k_attrs_rctl_bytes, 0, B_TRUE, &k_attrs_projp)) { goto release_minor; } wrapped_key_len = STRUCT_FGET(unwrap_key, uk_wrapped_key_len); if (wrapped_key_len > crypto_max_buffer_len) { cmn_err(CE_NOTE, "object_unwrap_key: buffer greater than %ld " "bytes, pid = %d", crypto_max_buffer_len, curproc->p_pid); rv = CRYPTO_ARGUMENTS_BAD; goto release_minor; } if ((rv = crypto_buffer_check(wrapped_key_len, &wrapped_key_projp)) != CRYPTO_SUCCESS) { goto release_minor; } wrapped_key_rctl_bytes = wrapped_key_len; wrapped_key = kmem_alloc(wrapped_key_len, KM_SLEEP); if (wrapped_key_len != 0 && copyin(STRUCT_FGETP(unwrap_key, uk_wrapped_key), wrapped_key, wrapped_key_len) != 0) { error = EFAULT; goto release_minor; } /* wrapped_key_len is not modified by the unwrap operation */ KCF_WRAP_KEY_OPS_PARAMS(¶ms, KCF_OP_KEY_UNWRAP, sp->sd_provider_session->ps_session, &mech, k_attrs, count, &handle, NULL, 0, NULL, &unwrapping_key, wrapped_key, &wrapped_key_len); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) STRUCT_FSET(unwrap_key, uk_object_handle, handle); release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (unwrapping_key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(unwrapping_key_rctl_bytes, unwrapping_key_projp); if (wrapped_key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(wrapped_key_rctl_bytes, wrapped_key_projp); if (k_attrs_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(k_attrs_rctl_bytes, k_attrs_projp); mutex_exit(&crypto_rctl_lock); if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); if (wrapped_key != NULL) kmem_free(wrapped_key, wrapped_key_len); free_crypto_key(&unwrapping_key); if (error != 0) goto out; STRUCT_FSET(unwrap_key, uk_return_value, rv); if (copyout(STRUCT_BUF(unwrap_key), arg, STRUCT_SIZE(unwrap_key)) != 0) { if (rv == CRYPTO_SUCCESS) { KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); error = EFAULT; } } out: if (sp != NULL) CRYPTO_SESSION_RELE(sp); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } return (error); } /* ARGSUSED */ static int object_derive_key(dev_t dev, caddr_t arg, int mode, int *rval) { STRUCT_DECL(crypto_derive_key, derive_key); kproject_t *key_projp, *mech_projp, *attributes_projp; kcf_provider_desc_t *real_provider = NULL; kcf_req_params_t params; crypto_object_attribute_t *k_attrs = NULL; crypto_mechanism_t mech; crypto_key_t base_key; crypto_session_id_t session_id; crypto_minor_t *cm; crypto_session_data_t *sp = NULL; crypto_object_id_t handle; size_t k_attrs_size; size_t key_rctl_bytes = 0, mech_rctl_bytes = 0; size_t attributes_rctl_bytes = 0; size_t carry; caddr_t attributes; uint_t count; int error = 0; int rv; boolean_t allocated_by_crypto_module = B_FALSE; boolean_t please_destroy_object = B_FALSE; STRUCT_INIT(derive_key, mode); if ((cm = crypto_hold_minor(getminor(dev))) == NULL) { cmn_err(CE_WARN, "object_derive_key: failed holding minor"); return (ENXIO); } if (copyin(arg, STRUCT_BUF(derive_key), STRUCT_SIZE(derive_key)) != 0) { crypto_release_minor(cm); return (EFAULT); } bzero(&base_key, sizeof (base_key)); session_id = STRUCT_FGET(derive_key, dk_session); if (!get_session_ptr(session_id, cm, &sp, &error, &rv)) { goto release_minor; } bcopy(STRUCT_FADDR(derive_key, dk_mechanism), &mech.cm_type, sizeof (crypto_mech_type_t)); if ((rv = kcf_get_hardware_provider(mech.cm_type, CRYPTO_MECH_INVALID, CHECK_RESTRICT_FALSE, sp->sd_provider, &real_provider, CRYPTO_FG_DERIVE)) != CRYPTO_SUCCESS) { goto release_minor; } carry = 0; rv = crypto_provider_copyin_mech_param(real_provider, STRUCT_FADDR(derive_key, dk_mechanism), &mech, mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { allocated_by_crypto_module = B_TRUE; if (!copyin_mech(mode, STRUCT_FADDR(derive_key, dk_mechanism), &mech, &mech_rctl_bytes, &carry, &rv, &error, &mech_projp)) { goto release_minor; } } else { if (rv != CRYPTO_SUCCESS) goto release_minor; } if (!copyin_key(mode, STRUCT_FADDR(derive_key, dk_base_key), &base_key, &key_rctl_bytes, &rv, &error, carry, &key_projp)) { goto release_minor; } count = STRUCT_FGET(derive_key, dk_count); attributes = STRUCT_FGETP(derive_key, dk_attributes); if (!copyin_attributes(mode, count, attributes, &k_attrs, &k_attrs_size, NULL, &rv, &error, &attributes_rctl_bytes, 0, B_TRUE, &attributes_projp)) { goto release_minor; } KCF_WRAP_KEY_OPS_PARAMS(¶ms, KCF_OP_KEY_DERIVE, sp->sd_provider_session->ps_session, &mech, k_attrs, count, &handle, NULL, 0, NULL, &base_key, NULL, NULL); rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); if (rv == CRYPTO_SUCCESS) { STRUCT_FSET(derive_key, dk_object_handle, handle); rv = crypto_provider_copyout_mech_param(real_provider, &mech, STRUCT_FADDR(derive_key, dk_mechanism), mode, &error); if (rv == CRYPTO_NOT_SUPPORTED) { rv = CRYPTO_SUCCESS; goto release_minor; } if (rv != CRYPTO_SUCCESS) please_destroy_object = B_TRUE; } release_minor: mutex_enter(&crypto_rctl_lock); if (mech_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(mech_rctl_bytes, mech_projp); if (key_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(key_rctl_bytes, key_projp); if (attributes_rctl_bytes != 0) CRYPTO_DECREMENT_RCTL(attributes_rctl_bytes, attributes_projp); mutex_exit(&crypto_rctl_lock); if (k_attrs != NULL) kmem_free(k_attrs, k_attrs_size); free_crypto_key(&base_key); if (error != 0) goto out; STRUCT_FSET(derive_key, dk_return_value, rv); if (copyout(STRUCT_BUF(derive_key), arg, STRUCT_SIZE(derive_key)) != 0) { if (rv == CRYPTO_SUCCESS) { please_destroy_object = B_TRUE; error = EFAULT; } } out: if (please_destroy_object) { KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_DESTROY, sp->sd_provider_session->ps_session, handle, NULL, 0, NULL, 0, NULL, NULL, 0, NULL); (void) kcf_submit_request(real_provider, NULL, NULL, ¶ms, B_FALSE); } if (sp != NULL) CRYPTO_SESSION_RELE(sp); crypto_release_minor(cm); if (real_provider != NULL) { crypto_free_mech(real_provider, allocated_by_crypto_module, &mech); KCF_PROV_REFRELE(real_provider); } return (error); } /* ARGSUSED */ static int crypto_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *c, int *rval) { #define ARG ((caddr_t)arg) switch (cmd) { case CRYPTO_GET_FUNCTION_LIST: return (get_function_list(dev, ARG, mode, rval)); case CRYPTO_GET_MECHANISM_NUMBER: return (get_mechanism_number(dev, ARG, mode, rval)); case CRYPTO_GET_PROVIDER_LIST: return (get_provider_list(dev, ARG, mode, rval)); case CRYPTO_GET_PROVIDER_INFO: return (get_provider_info(dev, ARG, mode, rval)); case CRYPTO_GET_PROVIDER_MECHANISMS: return (get_provider_mechanisms(dev, ARG, mode, rval)); case CRYPTO_GET_PROVIDER_MECHANISM_INFO: return (get_provider_mechanism_info(dev, ARG, mode, rval)); case CRYPTO_OPEN_SESSION: return (open_session(dev, ARG, mode, rval)); case CRYPTO_CLOSE_SESSION: return (close_session(dev, ARG, mode, rval)); case CRYPTO_ENCRYPT_INIT: return (encrypt_init(dev, ARG, mode, rval)); case CRYPTO_DECRYPT_INIT: return (decrypt_init(dev, ARG, mode, rval)); case CRYPTO_ENCRYPT: return (encrypt(dev, ARG, mode, rval)); case CRYPTO_DECRYPT: return (decrypt(dev, ARG, mode, rval)); case CRYPTO_ENCRYPT_UPDATE: return (encrypt_update(dev, ARG, mode, rval)); case CRYPTO_DECRYPT_UPDATE: return (decrypt_update(dev, ARG, mode, rval)); case CRYPTO_ENCRYPT_FINAL: return (encrypt_final(dev, ARG, mode, rval)); case CRYPTO_DECRYPT_FINAL: return (decrypt_final(dev, ARG, mode, rval)); case CRYPTO_DIGEST_INIT: return (digest_init(dev, ARG, mode, rval)); case CRYPTO_DIGEST: return (digest(dev, ARG, mode, rval)); case CRYPTO_DIGEST_UPDATE: return (digest_update(dev, ARG, mode, rval)); case CRYPTO_DIGEST_KEY: return (digest_key(dev, ARG, mode, rval)); case CRYPTO_DIGEST_FINAL: return (digest_final(dev, ARG, mode, rval)); case CRYPTO_SIGN_INIT: return (sign_init(dev, ARG, mode, rval)); case CRYPTO_SIGN: return (sign(dev, ARG, mode, rval)); case CRYPTO_SIGN_UPDATE: return (sign_update(dev, ARG, mode, rval)); case CRYPTO_SIGN_FINAL: return (sign_final(dev, ARG, mode, rval)); case CRYPTO_SIGN_RECOVER_INIT: return (sign_recover_init(dev, ARG, mode, rval)); case CRYPTO_SIGN_RECOVER: return (sign_recover(dev, ARG, mode, rval)); case CRYPTO_VERIFY_INIT: return (verify_init(dev, ARG, mode, rval)); case CRYPTO_VERIFY: return (verify(dev, ARG, mode, rval)); case CRYPTO_VERIFY_UPDATE: return (verify_update(dev, ARG, mode, rval)); case CRYPTO_VERIFY_FINAL: return (verify_final(dev, ARG, mode, rval)); case CRYPTO_VERIFY_RECOVER_INIT: return (verify_recover_init(dev, ARG, mode, rval)); case CRYPTO_VERIFY_RECOVER: return (verify_recover(dev, ARG, mode, rval)); case CRYPTO_SET_PIN: return (set_pin(dev, ARG, mode, rval)); case CRYPTO_LOGIN: return (login(dev, ARG, mode, rval)); case CRYPTO_LOGOUT: return (logout(dev, ARG, mode, rval)); case CRYPTO_SEED_RANDOM: return (seed_random(dev, ARG, mode, rval)); case CRYPTO_GENERATE_RANDOM: return (generate_random(dev, ARG, mode, rval)); case CRYPTO_OBJECT_CREATE: return (object_create(dev, ARG, mode, rval)); case CRYPTO_OBJECT_COPY: return (object_copy(dev, ARG, mode, rval)); case CRYPTO_OBJECT_DESTROY: return (object_destroy(dev, ARG, mode, rval)); case CRYPTO_OBJECT_GET_ATTRIBUTE_VALUE: return (object_get_attribute_value(dev, ARG, mode, rval)); case CRYPTO_OBJECT_GET_SIZE: return (object_get_size(dev, ARG, mode, rval)); case CRYPTO_OBJECT_SET_ATTRIBUTE_VALUE: return (object_set_attribute_value(dev, ARG, mode, rval)); case CRYPTO_OBJECT_FIND_INIT: return (object_find_init(dev, ARG, mode, rval)); case CRYPTO_OBJECT_FIND_UPDATE: return (object_find_update(dev, ARG, mode, rval)); case CRYPTO_OBJECT_FIND_FINAL: return (object_find_final(dev, ARG, mode, rval)); case CRYPTO_GENERATE_KEY: return (object_generate_key(dev, ARG, mode, rval)); case CRYPTO_GENERATE_KEY_PAIR: return (object_generate_key_pair(dev, ARG, mode, rval)); case CRYPTO_WRAP_KEY: return (object_wrap_key(dev, ARG, mode, rval)); case CRYPTO_UNWRAP_KEY: return (object_unwrap_key(dev, ARG, mode, rval)); case CRYPTO_DERIVE_KEY: return (object_derive_key(dev, ARG, mode, rval)); } return (EINVAL); } /* * Check for the project.max-crypto-memory resource control. */ static int crypto_buffer_check(size_t need, kproject_t **projp) { ASSERT(projp != NULL); if (need == 0) return (CRYPTO_SUCCESS); mutex_enter(&curproc->p_lock); mutex_enter(&crypto_rctl_lock); if (rctl_test(rc_project_crypto_mem, curproc->p_task->tk_proj->kpj_rctls, curproc, need, 0) & RCT_DENY) { mutex_exit(&crypto_rctl_lock); mutex_exit(&curproc->p_lock); return (CRYPTO_HOST_MEMORY); } curproc->p_task->tk_proj->kpj_data.kpd_crypto_mem += need; mutex_exit(&crypto_rctl_lock); (void) project_hold(curproc->p_task->tk_proj); *projp = curproc->p_task->tk_proj; mutex_exit(&curproc->p_lock); return (CRYPTO_SUCCESS); }