X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/04b8595b18b1b41ac7a206e4b3d51a635f8413d7..4ba76501152d51ccb5647018f3192c6096367d48:/osfmk/ipc/mach_debug.c?ds=sidebyside diff --git a/osfmk/ipc/mach_debug.c b/osfmk/ipc/mach_debug.c index cc0acd912..cf1d90c0b 100644 --- a/osfmk/ipc/mach_debug.c +++ b/osfmk/ipc/mach_debug.c @@ -2,7 +2,7 @@ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * * @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 @@ -11,10 +11,10 @@ * 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, @@ -22,34 +22,34 @@ * 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@ */ /* * @OSF_COPYRIGHT@ */ -/* +/* * Mach Operating System * Copyright (c) 1991,1990 Carnegie Mellon University * All Rights Reserved. - * + * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. - * + * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * + * * Carnegie Mellon requests users of this software to return to - * + * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 - * + * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ @@ -84,6 +84,8 @@ #include #include #include + +#include #endif /* @@ -104,29 +106,31 @@ #if !MACH_IPC_DEBUG kern_return_t mach_port_get_srights( - __unused ipc_space_t space, - __unused mach_port_name_t name, - __unused mach_port_rights_t *srightsp) + __unused ipc_space_t space, + __unused mach_port_name_t name, + __unused mach_port_rights_t *srightsp) { - return KERN_FAILURE; + return KERN_FAILURE; } #else kern_return_t mach_port_get_srights( - ipc_space_t space, - mach_port_name_t name, - mach_port_rights_t *srightsp) + ipc_space_t space, + mach_port_name_t name, + mach_port_rights_t *srightsp) { ipc_port_t port; kern_return_t kr; mach_port_rights_t srights; - if (space == IS_NULL) + if (space == IS_NULL) { return KERN_INVALID_TASK; + } kr = ipc_port_translate_receive(space, name, &port); - if (kr != KERN_SUCCESS) + if (kr != KERN_SUCCESS) { return kr; + } /* port is locked and active */ srights = port->ip_srights; @@ -154,23 +158,23 @@ mach_port_get_srights( #if !MACH_IPC_DEBUG kern_return_t mach_port_space_info( - __unused ipc_space_t space, - __unused ipc_info_space_t *infop, - __unused ipc_info_name_array_t *tablep, - __unused mach_msg_type_number_t *tableCntp, + __unused ipc_space_t space, + __unused ipc_info_space_t *infop, + __unused ipc_info_name_array_t *tablep, + __unused mach_msg_type_number_t *tableCntp, __unused ipc_info_tree_name_array_t *treep, - __unused mach_msg_type_number_t *treeCntp) + __unused mach_msg_type_number_t *treeCntp) { - return KERN_FAILURE; + return KERN_FAILURE; } #else kern_return_t mach_port_space_info( - ipc_space_t space, - ipc_info_space_t *infop, - ipc_info_name_array_t *tablep, - mach_msg_type_number_t *tableCntp, - __unused ipc_info_tree_name_array_t *treep, + ipc_space_t space, + ipc_info_space_t *infop, + ipc_info_name_array_t *tablep, + mach_msg_type_number_t *tableCntp, + __unused ipc_info_tree_name_array_t *treep, __unused mach_msg_type_number_t *treeCntp) { ipc_info_name_t *table_info; @@ -183,8 +187,15 @@ mach_port_space_info( vm_map_copy_t copy; - if (space == IS_NULL) + if (space == IS_NULL) { return KERN_INVALID_TASK; + } + +#if !(DEVELOPMENT || DEBUG) && CONFIG_MACF + const boolean_t dbg_ok = (mac_task_check_expose_task(kernel_task) == 0); +#else + const boolean_t dbg_ok = TRUE; +#endif /* start with in-line memory */ @@ -194,32 +205,34 @@ mach_port_space_info( is_read_lock(space); if (!is_active(space)) { is_read_unlock(space); - if (table_size != 0) + if (table_size != 0) { kmem_free(ipc_kernel_map, - table_addr, table_size); + table_addr, table_size); + } return KERN_INVALID_TASK; } table_size_needed = - vm_map_round_page((space->is_table_size - * sizeof(ipc_info_name_t)), - VM_MAP_PAGE_MASK(ipc_kernel_map)); + vm_map_round_page((space->is_table_size + * sizeof(ipc_info_name_t)), + VM_MAP_PAGE_MASK(ipc_kernel_map)); - if (table_size_needed == table_size) + if (table_size_needed == table_size) { break; + } is_read_unlock(space); if (table_size != table_size_needed) { - if (table_size != 0) + if (table_size != 0) { kmem_free(ipc_kernel_map, table_addr, table_size); - kr = kmem_alloc(ipc_kernel_map, &table_addr, table_size_needed); + } + kr = kmem_alloc(ipc_kernel_map, &table_addr, table_size_needed, VM_KERN_MEMORY_IPC); if (kr != KERN_SUCCESS) { return KERN_RESOURCE_SHORTAGE; } table_size = table_size_needed; } - } /* space is read-locked and active; we have enough wired memory */ @@ -243,7 +256,7 @@ mach_port_space_info( iin->iin_type = IE_BITS_TYPE(bits); if ((entry->ie_bits & MACH_PORT_TYPE_PORT_RIGHTS) != MACH_PORT_TYPE_NONE && entry->ie_request != IE_REQ_NONE) { - ipc_port_t port = (ipc_port_t) entry->ie_object; + ipc_port_t port = ip_object_to_port(entry->ie_object); assert(IP_VALID(port)); ip_lock(port); @@ -252,7 +265,7 @@ mach_port_space_info( } iin->iin_urefs = IE_BITS_UREFS(bits); - iin->iin_object = (natural_t)VM_KERNEL_ADDRPERM((uintptr_t)entry->ie_object); + iin->iin_object = (dbg_ok) ? (natural_t)VM_KERNEL_ADDRPERM((uintptr_t)entry->ie_object) : 0; iin->iin_next = entry->ie_next; iin->iin_hash = entry->ie_index; } @@ -261,20 +274,24 @@ mach_port_space_info( /* prepare the table out-of-line data for return */ if (table_size > 0) { - if (table_size > infop->iis_table_size * sizeof(ipc_info_name_t)) + vm_size_t used_table_size; + + used_table_size = infop->iis_table_size * sizeof(ipc_info_name_t); + if (table_size > used_table_size) { bzero((char *)&table_info[infop->iis_table_size], - table_size - infop->iis_table_size * sizeof(ipc_info_name_t)); + table_size - used_table_size); + } kr = vm_map_unwire( ipc_kernel_map, vm_map_trunc_page(table_addr, - VM_MAP_PAGE_MASK(ipc_kernel_map)), + VM_MAP_PAGE_MASK(ipc_kernel_map)), vm_map_round_page(table_addr + table_size, - VM_MAP_PAGE_MASK(ipc_kernel_map)), + VM_MAP_PAGE_MASK(ipc_kernel_map)), FALSE); assert(kr == KERN_SUCCESS); - kr = vm_map_copyin(ipc_kernel_map, (vm_map_address_t)table_addr, - (vm_map_size_t)table_size, TRUE, ©); + kr = vm_map_copyin(ipc_kernel_map, (vm_map_address_t)table_addr, + (vm_map_size_t)used_table_size, TRUE, ©); assert(kr == KERN_SUCCESS); *tablep = (ipc_info_name_t *)copy; *tableCntp = infop->iis_table_size; @@ -305,19 +322,20 @@ mach_port_space_info( #if !MACH_IPC_DEBUG kern_return_t mach_port_space_basic_info( - __unused ipc_space_t space, - __unused ipc_info_space_basic_t *infop) + __unused ipc_space_t space, + __unused ipc_info_space_basic_t *infop) { - return KERN_FAILURE; + return KERN_FAILURE; } #else kern_return_t mach_port_space_basic_info( - ipc_space_t space, - ipc_info_space_basic_t *infop) + ipc_space_t space, + ipc_info_space_basic_t *infop) { - if (space == IS_NULL) + if (space == IS_NULL) { return KERN_INVALID_TASK; + } is_read_lock(space); @@ -358,31 +376,33 @@ mach_port_space_basic_info( #if !MACH_IPC_DEBUG kern_return_t mach_port_dnrequest_info( - __unused ipc_space_t space, - __unused mach_port_name_t name, - __unused unsigned int *totalp, - __unused unsigned int *usedp) + __unused ipc_space_t space, + __unused mach_port_name_t name, + __unused unsigned int *totalp, + __unused unsigned int *usedp) { - return KERN_FAILURE; + return KERN_FAILURE; } #else kern_return_t mach_port_dnrequest_info( - ipc_space_t space, - mach_port_name_t name, - unsigned int *totalp, - unsigned int *usedp) + ipc_space_t space, + mach_port_name_t name, + unsigned int *totalp, + unsigned int *usedp) { unsigned int total, used; ipc_port_t port; kern_return_t kr; - if (space == IS_NULL) + if (space == IS_NULL) { return KERN_INVALID_TASK; + } kr = ipc_port_translate_receive(space, name, &port); - if (kr != KERN_SUCCESS) + if (kr != KERN_SUCCESS) { return kr; + } /* port is locked and active */ if (port->ip_requests == IPR_NULL) { @@ -395,11 +415,12 @@ mach_port_dnrequest_info( total = requests->ipr_size->its_size; for (index = 1, used = 0; - index < total; index++) { + index < total; index++) { ipc_port_request_t ipr = &requests[index]; - if (ipr->ipr_name != MACH_PORT_NULL) + if (ipr->ipr_name != MACH_PORT_NULL) { used++; + } } } ip_unlock(port); @@ -432,32 +453,34 @@ mach_port_dnrequest_info( #if !MACH_IPC_DEBUG kern_return_t mach_port_kobject( - __unused ipc_space_t space, - __unused mach_port_name_t name, - __unused natural_t *typep, - __unused mach_vm_address_t *addrp) + __unused ipc_space_t space, + __unused mach_port_name_t name, + __unused natural_t *typep, + __unused mach_vm_address_t *addrp) { - return KERN_FAILURE; + return KERN_FAILURE; } #else kern_return_t mach_port_kobject( - ipc_space_t space, - mach_port_name_t name, - natural_t *typep, - mach_vm_address_t *addrp) + ipc_space_t space, + mach_port_name_t name, + natural_t *typep, + mach_vm_address_t *addrp) { ipc_entry_t entry; ipc_port_t port; kern_return_t kr; mach_vm_address_t kaddr; - if (space == IS_NULL) + if (space == IS_NULL) { return KERN_INVALID_TASK; + } kr = ipc_right_lookup_read(space, name, &entry); - if (kr != KERN_SUCCESS) + if (kr != KERN_SUCCESS) { return kr; + } /* space is read-locked and active */ if ((entry->ie_bits & MACH_PORT_TYPE_SEND_RECEIVE) == 0) { @@ -465,7 +488,7 @@ mach_port_kobject( return KERN_INVALID_RIGHT; } - port = (ipc_port_t) entry->ie_object; + port = ip_object_to_port(entry->ie_object); assert(port != IP_NULL); ip_lock(port); @@ -478,17 +501,18 @@ mach_port_kobject( *typep = (unsigned int) ip_kotype(port); kaddr = (mach_vm_address_t)port->ip_kobject; - ip_unlock(port); - - - if (0 != kaddr && is_ipc_kobject(*typep)) + *addrp = 0; +#if (DEVELOPMENT || DEBUG) + if (kaddr && ip_is_kobject(port)) { *addrp = VM_KERNEL_UNSLIDE_OR_PERM(kaddr); - else - *addrp = 0; + } +#endif + ip_unlock(port); return KERN_SUCCESS; } #endif /* MACH_IPC_DEBUG */ + /* * Routine: mach_port_kernel_object [Legacy kernel call] * Purpose: @@ -510,20 +534,20 @@ mach_port_kobject( #if !MACH_IPC_DEBUG kern_return_t mach_port_kernel_object( - __unused ipc_space_t space, - __unused mach_port_name_t name, - __unused unsigned int *typep, - __unused unsigned int *addrp) + __unused ipc_space_t space, + __unused mach_port_name_t name, + __unused unsigned int *typep, + __unused unsigned int *addrp) { - return KERN_FAILURE; + return KERN_FAILURE; } #else kern_return_t mach_port_kernel_object( - ipc_space_t space, - mach_port_name_t name, - unsigned int *typep, - unsigned int *addrp) + ipc_space_t space, + mach_port_name_t name, + unsigned int *typep, + unsigned int *addrp) { mach_vm_address_t addr = 0; kern_return_t kr; @@ -533,3 +557,55 @@ mach_port_kernel_object( return kr; } #endif /* MACH_IPC_DEBUG */ + +#if (DEVELOPMENT || DEBUG) +kern_return_t +mach_port_special_reply_port_reset_link( + ipc_space_t space, + mach_port_name_t name, + boolean_t *srp_lost_link) +{ + ipc_port_t port; + kern_return_t kr; + thread_t thread = current_thread(); + + if (space != current_space()) { + return KERN_INVALID_TASK; + } + + if (!MACH_PORT_VALID(name)) { + return KERN_INVALID_NAME; + } + + if (!IP_VALID(thread->ith_special_reply_port)) { + return KERN_INVALID_VALUE; + } + + kr = ipc_port_translate_receive(space, name, &port); + if (kr != KERN_SUCCESS) { + return kr; + } + + if (thread->ith_special_reply_port != port) { + ip_unlock(port); + return KERN_INVALID_ARGUMENT; + } + + imq_lock(&port->ip_messages); + *srp_lost_link = (port->ip_srp_lost_link == 1)? TRUE : FALSE; + port->ip_srp_lost_link = 0; + imq_unlock(&port->ip_messages); + + ip_unlock(port); + return KERN_SUCCESS; +} +#else +kern_return_t +mach_port_special_reply_port_reset_link( + __unused ipc_space_t space, + __unused mach_port_name_t name, + __unused boolean_t *srp_lost_link) +{ + return KERN_NOT_SUPPORTED; +} +#endif