X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/91447636331957f3d9b5ca5b508f07c526b0074d..4ba76501152d51ccb5647018f3192c6096367d48:/osfmk/kern/kmod.c diff --git a/osfmk/kern/kmod.c b/osfmk/kern/kmod.c index a79fd2b0b..10ff9f8de 100644 --- a/osfmk/kern/kmod.c +++ b/osfmk/kern/kmod.c @@ -1,26 +1,38 @@ /* - * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2019 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. - * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* - * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. + * NOTICE: This file was modified by McAfee Research in 2004 to introduce + * support for mandatory and extensible security protections. This notice + * is included in support of clause 2.2 (b) of the Apple Public License, + * Version 2.0. + */ +/* + * Copyright (c) 1999 Apple Inc. All rights reserved. * * HISTORY * @@ -33,902 +45,101 @@ #include #include -#include #include #include #include -#include - -#include - -/* - * XXX headers for which prototypes should be in a common include file; - * XXX see libsa/kext.cpp for why. - */ -kern_return_t kmod_create_internal(kmod_info_t *info, kmod_t *id); -kern_return_t kmod_destroy_internal(kmod_t id); -kern_return_t kmod_start_or_stop(kmod_t id, int start, kmod_args_t *data, - mach_msg_type_number_t *dataCount); -kern_return_t kmod_retain(kmod_t id); -kern_return_t kmod_release(kmod_t id); -kern_return_t kmod_queue_cmd(vm_address_t data, vm_size_t size); -kern_return_t kmod_get_info(host_t host, kmod_info_array_t *kmods, - mach_msg_type_number_t *kmodCount); -extern void kdb_printf(const char *fmt, ...); - - - -#define WRITE_PROTECT_MODULE_TEXT (0) - -kmod_info_t *kmod = 0; -static int kmod_index = 1; - -decl_simple_lock_data(,kmod_lock) -decl_simple_lock_data(,kmod_queue_lock) - -typedef struct cmd_queue_entry { - queue_chain_t links; - vm_address_t data; - vm_size_t size; -} cmd_queue_entry_t; - -queue_head_t kmod_cmd_queue; - -void -kmod_init(void) -{ - simple_lock_init(&kmod_lock, 0); - simple_lock_init(&kmod_queue_lock, 0); - queue_init(&kmod_cmd_queue); -} - -kmod_info_t * -kmod_lookupbyid(kmod_t id) -{ - kmod_info_t *k = 0; - - k = kmod; - while (k) { - if (k->id == id) break; - k = k->next; - } - - return k; -} - -kmod_info_t * -kmod_lookupbyname(const char * name) -{ - kmod_info_t *k = 0; - - k = kmod; - while (k) { - if (!strcmp(k->name, name)) break; - k = k->next; - } - - return k; -} - -kmod_info_t * -kmod_lookupbyid_locked(kmod_t id) -{ - kmod_info_t *k = 0; - kmod_info_t *kc = 0; - - kc = (kmod_info_t *)kalloc(sizeof(kmod_info_t)); - if (!kc) return kc; - - simple_lock(&kmod_queue_lock); - k = kmod_lookupbyid(id); - if (k) { - bcopy((char*)k, (char *)kc, sizeof(kmod_info_t)); - } - - simple_unlock(&kmod_queue_lock); - - if (k == 0) { - kfree(kc, sizeof(kmod_info_t)); - kc = 0; - } - return kc; -} - -kmod_info_t * -kmod_lookupbyname_locked(const char * name) -{ - kmod_info_t *k = 0; - kmod_info_t *kc = 0; - - kc = (kmod_info_t *)kalloc(sizeof(kmod_info_t)); - if (!kc) return kc; - - simple_lock(&kmod_queue_lock); - k = kmod_lookupbyname(name); - if (k) { - bcopy((char *)k, (char *)kc, sizeof(kmod_info_t)); - } - - simple_unlock(&kmod_queue_lock); - - if (k == 0) { - kfree(kc, sizeof(kmod_info_t)); - kc = 0; - } - return kc; -} - -// XXX add a nocopy flag?? - -kern_return_t -kmod_queue_cmd(vm_address_t data, vm_size_t size) -{ - kern_return_t rc; - cmd_queue_entry_t *e = (cmd_queue_entry_t *)kalloc(sizeof(struct cmd_queue_entry)); - if (!e) return KERN_RESOURCE_SHORTAGE; - - rc = kmem_alloc(kernel_map, &e->data, size); - if (rc != KERN_SUCCESS) { - kfree(e, sizeof(struct cmd_queue_entry)); - return rc; - } - e->size = size; - bcopy((void *)data, (void *)e->data, size); - - simple_lock(&kmod_queue_lock); - enqueue_tail(&kmod_cmd_queue, (queue_entry_t)e); - simple_unlock(&kmod_queue_lock); - - thread_wakeup_one((event_t)&kmod_cmd_queue); - - return KERN_SUCCESS; -} - -kern_return_t -kmod_load_extension(char *name) -{ - kmod_load_extension_cmd_t *data; - vm_size_t size; - - size = sizeof(kmod_load_extension_cmd_t); - data = (kmod_load_extension_cmd_t *)kalloc(size); - if (!data) return KERN_RESOURCE_SHORTAGE; - - data->type = KMOD_LOAD_EXTENSION_PACKET; - strncpy(data->name, name, KMOD_MAX_NAME); - - return kmod_queue_cmd((vm_address_t)data, size); -} - -kern_return_t -kmod_load_extension_with_dependencies(char *name, char **dependencies) -{ - kmod_load_with_dependencies_cmd_t *data; - vm_size_t size; - char **c; - int i, count = 0; - - c = dependencies; - if (c) { - while (*c) { - count++; c++; - } - } - size = sizeof(int) + KMOD_MAX_NAME * (count + 1) + 1; - data = (kmod_load_with_dependencies_cmd_t *)kalloc(size); - if (!data) return KERN_RESOURCE_SHORTAGE; - - data->type = KMOD_LOAD_WITH_DEPENDENCIES_PACKET; - strncpy(data->name, name, KMOD_MAX_NAME); - - c = dependencies; - for (i=0; i < count; i++) { - strncpy(data->dependencies[i], *c, KMOD_MAX_NAME); - c++; - } - data->dependencies[count][0] = 0; - - return kmod_queue_cmd((vm_address_t)data, size); -} -kern_return_t -kmod_send_generic(int type, void *generic_data, int size) -{ - kmod_generic_cmd_t *data; - - data = (kmod_generic_cmd_t *)kalloc(size + sizeof(int)); - if (!data) return KERN_RESOURCE_SHORTAGE; - - data->type = type; - bcopy(data->data, generic_data, size); - - return kmod_queue_cmd((vm_address_t)data, size + sizeof(int)); -} - -extern vm_offset_t sectPRELINKB; -extern int sectSizePRELINK; - -/* - * Operates only on 32 bit mach keaders on behalf of kernel module loader - * if WRITE_PROTECT_MODULE_TEXT is defined. - */ -kern_return_t -kmod_create_internal(kmod_info_t *info, kmod_t *id) -{ - kern_return_t rc; - boolean_t isPrelink; - - if (!info) return KERN_INVALID_ADDRESS; - - // double check for page alignment - if ((info->address | info->hdr_size) & (PAGE_SIZE - 1)) { - return KERN_INVALID_ADDRESS; - } - - isPrelink = ((info->address >= sectPRELINKB) && (info->address < (sectPRELINKB + sectSizePRELINK))); - if (!isPrelink) { - rc = vm_map_wire(kernel_map, info->address + info->hdr_size, - info->address + info->size, VM_PROT_DEFAULT, FALSE); - if (rc != KERN_SUCCESS) { - return rc; - } - } -#if WRITE_PROTECT_MODULE_TEXT - { - struct section * sect = getsectbynamefromheader( - (struct mach_header*) info->address, "__TEXT", "__text"); - - if(sect) { - (void) vm_map_protect(kernel_map, round_page(sect->addr), trunc_page(sect->addr + sect->size), - VM_PROT_READ|VM_PROT_EXECUTE, TRUE); - } - } -#endif /* WRITE_PROTECT_MODULE_TEXT */ - - simple_lock(&kmod_lock); - - // check to see if already loaded - if (kmod_lookupbyname(info->name)) { - simple_unlock(&kmod_lock); - if (!isPrelink) { - rc = vm_map_unwire(kernel_map, info->address + info->hdr_size, - info->address + info->size, FALSE); - assert(rc == KERN_SUCCESS); - } - return KERN_INVALID_ARGUMENT; - } - - info->id = kmod_index++; - info->reference_count = 0; - - info->next = kmod; - kmod = info; - - *id = info->id; - - simple_unlock(&kmod_lock); - -#if DEBUG - printf("kmod_create: %s (id %d), %d pages loaded at 0x%x, header size 0x%x\n", - info->name, info->id, info->size / PAGE_SIZE, info->address, info->hdr_size); -#endif /* DEBUG */ - - return KERN_SUCCESS; -} - - -kern_return_t -kmod_create(host_priv_t host_priv, - vm_address_t addr, - kmod_t *id) -{ - kmod_info_t *info = (kmod_info_t *)addr; - - if (host_priv == HOST_PRIV_NULL) return KERN_INVALID_HOST; - return kmod_create_internal(info, id); -} - -kern_return_t -kmod_create_fake_with_address(const char *name, const char *version, - vm_address_t address, vm_size_t size, - int * return_id) -{ - kmod_info_t *info; - - if (!name || ! version || - (1 + strlen(name) > KMOD_MAX_NAME) || - (1 + strlen(version) > KMOD_MAX_NAME)) { - - return KERN_INVALID_ARGUMENT; - } - - info = (kmod_info_t *)kalloc(sizeof(kmod_info_t)); - if (!info) { - return KERN_RESOURCE_SHORTAGE; - } - - // make de fake - info->info_version = KMOD_INFO_VERSION; - bcopy(name, info->name, 1 + strlen(name)); - bcopy(version, info->version, 1 + strlen(version)); //NIK fixed this part - info->reference_count = 1; // keep it from unloading, starting, stopping - info->reference_list = 0; - info->address = address; - info->size = size; - info->hdr_size = 0; - info->start = info->stop = 0; - - simple_lock(&kmod_lock); - - // check to see if already "loaded" - if (kmod_lookupbyname(info->name)) { - simple_unlock(&kmod_lock); - return KERN_INVALID_ARGUMENT; - } - - info->id = kmod_index++; - if (return_id) - *return_id = info->id; - - info->next = kmod; - kmod = info; - - simple_unlock(&kmod_lock); - - return KERN_SUCCESS; -} - -kern_return_t -kmod_create_fake(const char *name, const char *version) -{ - return kmod_create_fake_with_address(name, version, 0, 0, NULL); -} - - -static kern_return_t -_kmod_destroy_internal(kmod_t id, boolean_t fake) -{ - kern_return_t rc; - kmod_info_t *k; - kmod_info_t *p; - - simple_lock(&kmod_lock); - - k = p = kmod; - while (k) { - if (k->id == id) { - kmod_reference_t *r, *t; - - if (!fake && (k->reference_count != 0)) { - simple_unlock(&kmod_lock); - return KERN_INVALID_ARGUMENT; - } - - if (k == p) { // first element - kmod = k->next; - } else { - p->next = k->next; - } - simple_unlock(&kmod_lock); - - r = k->reference_list; - while (r) { - r->info->reference_count--; - t = r; - r = r->next; - kfree(t, sizeof(struct kmod_reference)); - } - - if (!fake) - { -#if DEBUG - printf("kmod_destroy: %s (id %d), deallocating %d pages starting at 0x%x\n", - k->name, k->id, k->size / PAGE_SIZE, k->address); -#endif /* DEBUG */ - - if( (k->address >= sectPRELINKB) && (k->address < (sectPRELINKB + sectSizePRELINK))) - { - vm_offset_t - virt = ml_static_ptovirt(k->address); - if( virt) { - ml_static_mfree( virt, k->size); - } - } - else - { - rc = vm_map_unwire(kernel_map, k->address + k->hdr_size, - k->address + k->size, FALSE); - assert(rc == KERN_SUCCESS); - - rc = vm_deallocate(kernel_map, k->address, k->size); - assert(rc == KERN_SUCCESS); - } - } - return KERN_SUCCESS; - } - p = k; - k = k->next; - } - - simple_unlock(&kmod_lock); - - return KERN_INVALID_ARGUMENT; -} - -kern_return_t -kmod_destroy_internal(kmod_t id) -{ - return _kmod_destroy_internal(id, FALSE); -} - -kern_return_t -kmod_destroy(host_priv_t host_priv, - kmod_t id) -{ - if (host_priv == HOST_PRIV_NULL) return KERN_INVALID_HOST; - return _kmod_destroy_internal(id, FALSE); -} - -kern_return_t -kmod_destroy_fake(kmod_t id) -{ - return _kmod_destroy_internal(id, TRUE); -} - -kern_return_t -kmod_start_or_stop( - kmod_t id, - int start, - kmod_args_t *data, - mach_msg_type_number_t *dataCount) -{ - kern_return_t rc = KERN_SUCCESS; - void * user_data = 0; - kern_return_t (*func)(kmod_info_t *, void *); - kmod_info_t *k; - - simple_lock(&kmod_lock); - - k = kmod_lookupbyid(id); - if (!k || k->reference_count) { - simple_unlock(&kmod_lock); - rc = KERN_INVALID_ARGUMENT; - goto finish; - } - - if (start) { - func = (void *)k->start; - } else { - func = (void *)k->stop; - } - - simple_unlock(&kmod_lock); - - // - // call kmod entry point - // - if (data && dataCount && *data && *dataCount) { - vm_map_offset_t map_addr; - vm_map_copyout(kernel_map, &map_addr, (vm_map_copy_t)*data); - user_data = CAST_DOWN(void *, map_addr); - } - - rc = (*func)(k, user_data); - -finish: - - if (user_data) { - (void) vm_deallocate(kernel_map, (vm_offset_t)user_data, *dataCount); - } - if (data) *data = 0; - if (dataCount) *dataCount = 0; - - return rc; -} - - -/* - * The retain and release calls take no user data, but the caller - * may have sent some in error (the MIG definition allows it). - * If this is the case, they will just return that same data - * right back to the caller (since they never touch the *data and - * *dataCount fields). - */ -kern_return_t -kmod_retain(kmod_t id) -{ - kern_return_t rc = KERN_SUCCESS; - - kmod_info_t *t; // reference to - kmod_info_t *f; // reference from - kmod_reference_t *r = 0; - - r = (kmod_reference_t *)kalloc(sizeof(struct kmod_reference)); - if (!r) { - rc = KERN_RESOURCE_SHORTAGE; - goto finish; - } - - simple_lock(&kmod_lock); - - t = kmod_lookupbyid(KMOD_UNPACK_TO_ID(id)); - f = kmod_lookupbyid(KMOD_UNPACK_FROM_ID(id)); - if (!t || !f) { - simple_unlock(&kmod_lock); - if (r) kfree(r, sizeof(struct kmod_reference)); - rc = KERN_INVALID_ARGUMENT; - goto finish; - } - - r->next = f->reference_list; - r->info = t; - f->reference_list = r; - t->reference_count++; - - simple_unlock(&kmod_lock); - -finish: - - return rc; -} - - -kern_return_t -kmod_release(kmod_t id) -{ - kern_return_t rc = KERN_INVALID_ARGUMENT; - - kmod_info_t *t; // reference to - kmod_info_t *f; // reference from - kmod_reference_t *r = 0; - kmod_reference_t * p; - - simple_lock(&kmod_lock); - - t = kmod_lookupbyid(KMOD_UNPACK_TO_ID(id)); - f = kmod_lookupbyid(KMOD_UNPACK_FROM_ID(id)); - if (!t || !f) { - rc = KERN_INVALID_ARGUMENT; - goto finish; - } - - p = r = f->reference_list; - while (r) { - if (r->info == t) { - if (p == r) { // first element - f->reference_list = r->next; - } else { - p->next = r->next; - } - r->info->reference_count--; - - simple_unlock(&kmod_lock); - kfree(r, sizeof(struct kmod_reference)); - rc = KERN_SUCCESS; - goto finish; - } - p = r; - r = r->next; - } - - simple_unlock(&kmod_lock); - -finish: - - return rc; -} - - -kern_return_t -kmod_control(host_priv_t host_priv, - kmod_t id, - kmod_control_flavor_t flavor, - kmod_args_t *data, - mach_msg_type_number_t *dataCount) -{ - kern_return_t rc = KERN_SUCCESS; - - if (host_priv == HOST_PRIV_NULL) return KERN_INVALID_HOST; - - switch (flavor) { - - case KMOD_CNTL_START: - case KMOD_CNTL_STOP: - { - rc = kmod_start_or_stop(id, (flavor == KMOD_CNTL_START), - data, dataCount); - break; - } - - case KMOD_CNTL_RETAIN: - { - rc = kmod_retain(id); - break; - } - - case KMOD_CNTL_RELEASE: - { - rc = kmod_release(id); - break; - } - - case KMOD_CNTL_GET_CMD: - { - - cmd_queue_entry_t *e; - - /* - * Throw away any data the user may have sent in error. - * We must do this, because we are likely to return to - * some data for these commands (thus causing a leak of - * whatever data the user sent us in error). - */ - if (*data && *dataCount) { - vm_map_copy_discard(*data); - *data = 0; - *dataCount = 0; - } - - simple_lock(&kmod_queue_lock); - - if (queue_empty(&kmod_cmd_queue)) { - wait_result_t res; - - res = thread_sleep_simple_lock((event_t)&kmod_cmd_queue, - &kmod_queue_lock, - THREAD_ABORTSAFE); - if (queue_empty(&kmod_cmd_queue)) { - // we must have been interrupted! - simple_unlock(&kmod_queue_lock); - assert(res == THREAD_INTERRUPTED); - return KERN_ABORTED; - } - } - e = (cmd_queue_entry_t *)dequeue_head(&kmod_cmd_queue); - - simple_unlock(&kmod_queue_lock); +#include + +/********************************************************************* + ********************************************************************** + *** KMOD INTERFACE DEPRECATED AS OF SNOWLEOPARD *** + ********************************************************************** + ********************************************************************** + * Except for kmod_get_info(), which continues to work for K32 with + * 32-bit clients, all remaining functions in this module remain + * for symbol linkage or MIG support only, + * and return KERN_NOT_SUPPORTED. + * + * Some kernel-internal portions have been moved to + * libkern/OSKextLib.cpp and libkern/c++/OSKext.cpp. + **********************************************************************/ - rc = vm_map_copyin(kernel_map, (vm_map_address_t)e->data, - (vm_map_size_t)e->size, TRUE, (vm_map_copy_t *)data); - if (rc) { - simple_lock(&kmod_queue_lock); - enqueue_head(&kmod_cmd_queue, (queue_entry_t)e); - simple_unlock(&kmod_queue_lock); - *data = 0; - *dataCount = 0; - return rc; - } - *dataCount = e->size; +// bsd/sys/proc.h +extern void proc_selfname(char * buf, int size); - kfree(e, sizeof(struct cmd_queue_entry)); - - break; - } +#define NOT_SUPPORTED_USER64() \ + do { \ + char procname[64] = "unknown"; \ + proc_selfname(procname, sizeof(procname)); \ + printf("%s is not supported for 64-bit clients (called from %s)\n", \ + __FUNCTION__, procname); \ + } while (0) - default: - rc = KERN_INVALID_ARGUMENT; - } +#define NOT_SUPPORTED_KERNEL() \ + do { \ + char procname[64] = "unknown"; \ + proc_selfname(procname, sizeof(procname)); \ + printf("%s is not supported on this kernel architecture (called from %s)\n", \ + __FUNCTION__, procname); \ + } while (0) - return rc; -}; +#define KMOD_MIG_UNUSED __unused +/********************************************************************* + * Old MIG routines that are no longer supported. + ********************************************************************** + * We have to keep these around for ppc, i386, and x86_64. A 32-bit + * user-space client might call into the 64-bit kernel. Only + * kmod_get_info() retains a functional implementation (ppc/i386). + **********************************************************************/ kern_return_t -kmod_get_info(__unused host_t host, - kmod_info_array_t *kmods, - mach_msg_type_number_t *kmodCount) +kmod_create( + host_priv_t host_priv __unused, + vm_address_t addr __unused, + kmod_t * id __unused) { - vm_offset_t data; - kmod_info_t *k, *p1; - kmod_reference_t *r, *p2; - int ref_count; - unsigned size = 0; - kern_return_t rc = KERN_SUCCESS; - - *kmods = (void *)0; - *kmodCount = 0; - -retry: - simple_lock(&kmod_lock); - size = 0; - k = kmod; - while (k) { - size += sizeof(kmod_info_t); - r = k->reference_list; - while (r) { - size +=sizeof(kmod_reference_t); - r = r->next; - } - k = k->next; - } - simple_unlock(&kmod_lock); - if (!size) return KERN_SUCCESS; - - rc = kmem_alloc(kernel_map, &data, size); - if (rc) return rc; - - // copy kmod into data, retry if kmod's size has changed (grown) - // the copied out data is tweeked to figure what's what at user level - // change the copied out k->next pointers to point to themselves - // change the k->reference into a count, tack the references on - // the end of the data packet in the order they are found - - simple_lock(&kmod_lock); - k = kmod; p1 = (kmod_info_t *)data; - while (k) { - if ((p1 + 1) > (kmod_info_t *)(data + size)) { - simple_unlock(&kmod_lock); - kmem_free(kernel_map, data, size); - goto retry; - } - - *p1 = *k; - if (k->next) p1->next = k; - p1++; k = k->next; - } - - p2 = (kmod_reference_t *)p1; - k = kmod; p1 = (kmod_info_t *)data; - while (k) { - r = k->reference_list; ref_count = 0; - while (r) { - if ((p2 + 1) > (kmod_reference_t *)(data + size)) { - simple_unlock(&kmod_lock); - kmem_free(kernel_map, data, size); - goto retry; - } - // note the last 'k' in the chain has its next == 0 - // since there can only be one like that, - // this case is handled by the caller - *p2 = *r; - p2++; r = r->next; ref_count++; - } - p1->reference_list = (kmod_reference_t *)ref_count; - p1++; k = k->next; - } - simple_unlock(&kmod_lock); - - rc = vm_map_copyin(kernel_map, data, size, TRUE, (vm_map_copy_t *)kmods); - if (rc) { - kmem_free(kernel_map, data, size); - *kmods = 0; - *kmodCount = 0; - return rc; - } - *kmodCount = size; - - return KERN_SUCCESS; + NOT_SUPPORTED_KERNEL(); + return KERN_NOT_SUPPORTED; } -/* - * Operates only on 32 bit mach keaders on behalf of kernel module loader - */ -static kern_return_t -kmod_call_funcs_in_section(struct mach_header *header, const char *sectName) -{ - typedef void (*Routine)(void); - Routine * routines; - int size, i; - - if (header->magic != MH_MAGIC) { - return KERN_INVALID_ARGUMENT; - } - - routines = (Routine *) getsectdatafromheader(header, SEG_TEXT, /*(char *)*/ sectName, &size); - if (!routines) return KERN_SUCCESS; - - size /= sizeof(Routine); - for (i = 0; i < size; i++) { - (*routines[i])(); - } - - return KERN_SUCCESS; -} - -/* - * Operates only on 32 bit mach keaders on behalf of kernel module loader - */ +/********************************************************************/ kern_return_t -kmod_initialize_cpp(kmod_info_t *info) +kmod_destroy( + host_priv_t host_priv __unused, + kmod_t id __unused) { - return kmod_call_funcs_in_section((struct mach_header *)info->address, "__constructor"); + NOT_SUPPORTED_KERNEL(); + return KERN_NOT_SUPPORTED; } -/* - * Operates only on 32 bit mach keaders on behalf of kernel module loader - */ +/********************************************************************/ kern_return_t -kmod_finalize_cpp(kmod_info_t *info) +kmod_control( + host_priv_t host_priv __unused, + kmod_t id __unused, + kmod_control_flavor_t flavor __unused, + kmod_args_t * data __unused, + mach_msg_type_number_t * dataCount __unused) { - return kmod_call_funcs_in_section((struct mach_header *)info->address, "__destructor"); + NOT_SUPPORTED_KERNEL(); + return KERN_NOT_SUPPORTED; } +/********************************************************************/ kern_return_t -kmod_default_start(__unused struct kmod_info *ki, __unused void *data) -{ - return KMOD_RETURN_SUCCESS; -} - +kmod_get_info( + host_t host __unused, + kmod_info_array_t * kmod_list KMOD_MIG_UNUSED, + mach_msg_type_number_t * kmodCount KMOD_MIG_UNUSED); kern_return_t -kmod_default_stop(__unused struct kmod_info *ki, __unused void *data) -{ - return KMOD_RETURN_SUCCESS; -} - -static void -kmod_dump_to(vm_offset_t *addr, unsigned int cnt, - void (*printf_func)(const char *fmt, ...)) -{ - vm_offset_t * kscan_addr = 0; - kmod_info_t * k; - kmod_reference_t * r; - unsigned int i; - int found_kmod = 0; - kmod_info_t * stop_kmod = 0; - - for (k = kmod; k; k = k->next) { - if (pmap_find_phys(kernel_pmap, (addr64_t)((uintptr_t)k)) == 0) { - (*printf_func)(" kmod scan stopped due to missing " - "kmod page: %08x\n", stop_kmod); - break; - } - if (!k->address) { - continue; // skip fake entries for built-in kernel components - } - for (i = 0, kscan_addr = addr; i < cnt; i++, kscan_addr++) { - if ((*kscan_addr >= k->address) && - (*kscan_addr < (k->address + k->size))) { - - if (!found_kmod) { - (*printf_func)(" Kernel loadable modules in backtrace " - "(with dependencies):\n"); - } - found_kmod = 1; - (*printf_func)(" %s(%s)@0x%x\n", - k->name, k->version, k->address); - - for (r = k->reference_list; r; r = r->next) { - kmod_info_t * rinfo; - - if (pmap_find_phys(kernel_pmap, (addr64_t)((uintptr_t)r)) == 0) { - (*printf_func)(" kmod dependency scan stopped " - "due to missing dependency page: %08x\n", r); - break; - } - - rinfo = r->info; - - if (pmap_find_phys(kernel_pmap, (addr64_t)((uintptr_t)rinfo)) == 0) { - (*printf_func)(" kmod dependency scan stopped " - "due to missing kmod page: %08x\n", rinfo); - break; - } - - if (!rinfo->address) { - continue; // skip fake entries for built-ins - } - - (*printf_func)(" dependency: %s(%s)@0x%x\n", - rinfo->name, rinfo->version, rinfo->address); - } - - break; // only report this kmod for one backtrace address - } - } - } - - return; -} - -void -kmod_dump(vm_offset_t *addr, unsigned int cnt) -{ - kmod_dump_to(addr, cnt, &kdb_printf); -} - -void -kmod_dump_log(vm_offset_t *addr, unsigned int cnt) +kmod_get_info( + host_t host __unused, + kmod_info_array_t * kmod_list KMOD_MIG_UNUSED, + mach_msg_type_number_t * kmodCount KMOD_MIG_UNUSED) { - kmod_dump_to(addr, cnt, &printf); + NOT_SUPPORTED_KERNEL(); + return KERN_NOT_SUPPORTED; }