X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/39236c6e673c41db228275375ab7fdb0f837b292..813fb2f63a553c957e917ede5f119b021d6ce391:/osfmk/vm/bsd_vm.c diff --git a/osfmk/vm/bsd_vm.c b/osfmk/vm/bsd_vm.c index 6c155e60a..78e39a753 100644 --- a/osfmk/vm/bsd_vm.c +++ b/osfmk/vm/bsd_vm.c @@ -42,13 +42,11 @@ #include #include #include +#include #include #include -#include -#include - #include #include #include @@ -120,11 +118,9 @@ typedef struct vnode_pager { struct vnode *vnode_handle; /* vnode handle */ } *vnode_pager_t; + #define pager_ikot pager_header.io_bits -ipc_port_t -trigger_name_to_port( /* forward */ - mach_port_t); kern_return_t vnode_pager_cluster_read( /* forward */ @@ -152,6 +148,10 @@ vnode_pager_t vnode_pager_lookup( /* forward */ memory_object_t); +struct vnode * +vnode_pager_lookup_vnode( /* forward */ + memory_object_t); + zone_t vnode_pager_zone; @@ -182,175 +182,6 @@ extern int proc_resetpcontrol(int); extern unsigned long vm_cs_validated_resets; #endif -/* - * Routine: mach_macx_triggers - * Function: - * Syscall interface to set the call backs for low and - * high water marks. - */ -int -mach_macx_triggers( - struct macx_triggers_args *args) -{ - int hi_water = args->hi_water; - int low_water = args->low_water; - int flags = args->flags; - mach_port_t trigger_name = args->alert_port; - kern_return_t kr; - memory_object_default_t default_pager; - ipc_port_t trigger_port; - - default_pager = MEMORY_OBJECT_DEFAULT_NULL; - kr = host_default_memory_manager(host_priv_self(), - &default_pager, 0); - if(kr != KERN_SUCCESS) { - return EINVAL; - } - - if (((flags & SWAP_ENCRYPT_ON) && (flags & SWAP_ENCRYPT_OFF)) || - ((flags & SWAP_COMPACT_ENABLE) && (flags & SWAP_COMPACT_DISABLE))) { - /* can't have it both ways */ - return EINVAL; - } - - if (default_pager_init_flag == 0) { - start_def_pager(NULL); - default_pager_init_flag = 1; - } - - if (flags & SWAP_ENCRYPT_ON) { - /* ENCRYPTED SWAP: tell default_pager to encrypt */ - default_pager_triggers(default_pager, - 0, 0, - SWAP_ENCRYPT_ON, - IP_NULL); - } else if (flags & SWAP_ENCRYPT_OFF) { - /* ENCRYPTED SWAP: tell default_pager not to encrypt */ - default_pager_triggers(default_pager, - 0, 0, - SWAP_ENCRYPT_OFF, - IP_NULL); - } - - if (flags & USE_EMERGENCY_SWAP_FILE_FIRST) { - /* - * Time to switch to the emergency segment. - */ - return default_pager_triggers(default_pager, - 0, 0, - USE_EMERGENCY_SWAP_FILE_FIRST, - IP_NULL); - } - - if (flags & SWAP_FILE_CREATION_ERROR) { - /* - * For some reason, the dynamic pager failed to create a swap file. - */ - trigger_port = trigger_name_to_port(trigger_name); - if(trigger_port == NULL) { - return EINVAL; - } - /* trigger_port is locked and active */ - ipc_port_make_send_locked(trigger_port); - ip_unlock(trigger_port); - default_pager_triggers(default_pager, - 0, 0, - SWAP_FILE_CREATION_ERROR, - trigger_port); - } - - if (flags & HI_WAT_ALERT) { - trigger_port = trigger_name_to_port(trigger_name); - if(trigger_port == NULL) { - return EINVAL; - } - /* trigger_port is locked and active */ - ipc_port_make_send_locked(trigger_port); - ip_unlock(trigger_port); - default_pager_triggers(default_pager, - hi_water, low_water, - HI_WAT_ALERT, trigger_port); - } - - if (flags & LO_WAT_ALERT) { - trigger_port = trigger_name_to_port(trigger_name); - if(trigger_port == NULL) { - return EINVAL; - } - /* trigger_port is locked and active */ - ipc_port_make_send_locked(trigger_port); - ip_unlock(trigger_port); - default_pager_triggers(default_pager, - hi_water, low_water, - LO_WAT_ALERT, trigger_port); - } - - - if (flags & PROC_RESUME) { - - /* - * For this call, hi_water is used to pass in the pid of the process we want to resume - * or unthrottle. This is of course restricted to the superuser (checked inside of - * proc_resetpcontrol). - */ - - return proc_resetpcontrol(hi_water); - } - - /* - * Set thread scheduling priority and policy for the current thread - * it is assumed for the time being that the thread setting the alert - * is the same one which will be servicing it. - * - * XXX This does not belong in the kernel XXX - */ - if (flags & HI_WAT_ALERT) { - thread_precedence_policy_data_t pre; - thread_extended_policy_data_t ext; - - ext.timeshare = FALSE; - pre.importance = INT32_MAX; - - thread_policy_set(current_thread(), - THREAD_EXTENDED_POLICY, - (thread_policy_t)&ext, - THREAD_EXTENDED_POLICY_COUNT); - - thread_policy_set(current_thread(), - THREAD_PRECEDENCE_POLICY, - (thread_policy_t)&pre, - THREAD_PRECEDENCE_POLICY_COUNT); - - current_thread()->options |= TH_OPT_VMPRIV; - } - - if (flags & (SWAP_COMPACT_DISABLE | SWAP_COMPACT_ENABLE)) { - return macx_backing_store_compaction(flags & (SWAP_COMPACT_DISABLE | SWAP_COMPACT_ENABLE)); - } - - return 0; -} - -/* - * - */ -ipc_port_t -trigger_name_to_port( - mach_port_t trigger_name) -{ - ipc_port_t trigger_port; - ipc_space_t space; - - if (trigger_name == 0) - return (NULL); - - space = current_space(); - if(ipc_port_translate_receive(space, CAST_MACH_PORT_TO_NAME(trigger_name), - &trigger_port) != KERN_SUCCESS) - return (NULL); - return trigger_port; -} - extern int uiomove64(addr64_t, int, void *); #define MAX_RUN 32 @@ -374,6 +205,7 @@ memory_object_control_uiomove( int i; int orig_offset; vm_page_t page_run[MAX_RUN]; + int dirty_count; /* keeps track of number of pages dirtied as part of this uiomove */ object = memory_object_control_to_vm_object(control); if (object == VM_OBJECT_NULL) { @@ -394,14 +226,15 @@ memory_object_control_uiomove( return 0; } orig_offset = start_offset; - + + dirty_count = 0; while (io_requested && retval == 0) { cur_needed = (start_offset + io_requested + (PAGE_SIZE - 1)) / PAGE_SIZE; if (cur_needed > MAX_RUN) cur_needed = MAX_RUN; - + for (cur_run = 0; cur_run < cur_needed; ) { if ((dst_page = vm_page_lookup(object, offset)) == VM_PAGE_NULL) @@ -421,11 +254,9 @@ memory_object_control_uiomove( PAGE_SLEEP(object, dst_page, THREAD_UNINT); continue; } - if (dst_page->laundry) { - dst_page->pageout = FALSE; - + if (dst_page->laundry) vm_pageout_steal_laundry(dst_page, FALSE); - } + /* * this routine is only called when copying * to/from real files... no need to consider @@ -434,6 +265,8 @@ memory_object_control_uiomove( assert(!dst_page->encrypted); if (mark_dirty) { + if (dst_page->dirty == FALSE) + dirty_count++; SET_PAGE_DIRTY(dst_page, FALSE); if (dst_page->cs_validated && !dst_page->cs_tainted) { @@ -446,7 +279,7 @@ memory_object_control_uiomove( #if DEVELOPMENT || DEBUG vm_cs_validated_resets++; #endif - pmap_disconnect(dst_page->phys_page); + pmap_disconnect(VM_PAGE_GET_PHYS_PAGE(dst_page)); } } dst_page->busy = TRUE; @@ -472,7 +305,7 @@ memory_object_control_uiomove( if ((xsize = PAGE_SIZE - start_offset) > io_requested) xsize = io_requested; - if ( (retval = uiomove64((addr64_t)(((addr64_t)(dst_page->phys_page) << 12) + start_offset), xsize, uio)) ) + if ( (retval = uiomove64((addr64_t)(((addr64_t)(VM_PAGE_GET_PHYS_PAGE(dst_page)) << PAGE_SHIFT) + start_offset), xsize, uio)) ) break; io_requested -= xsize; @@ -509,14 +342,16 @@ memory_object_control_uiomove( * update clustered and speculative state * */ - VM_PAGE_CONSUME_CLUSTERED(dst_page); + if (dst_page->clustered) + VM_PAGE_CONSUME_CLUSTERED(dst_page); PAGE_WAKEUP_DONE(dst_page); } orig_offset = 0; } + if (object->pager) + task_update_logical_writes(current_task(), (dirty_count * PAGE_SIZE), TASK_WRITE_DEFERRED, vnode_pager_lookup_vnode(object->pager)); vm_object_unlock(object); - return (retval); } @@ -527,7 +362,7 @@ memory_object_control_uiomove( void vnode_pager_bootstrap(void) { - register vm_size_t size; + vm_size_t size; size = (vm_size_t) sizeof(struct vnode_pager); vnode_pager_zone = zinit(size, (vm_size_t) MAX_VNODE*size, @@ -617,7 +452,7 @@ vnode_pager_data_return( __unused boolean_t kernel_copy, int upl_flags) { - register vnode_pager_t vnode_object; + vnode_pager_t vnode_object; vnode_object = vnode_pager_lookup(mem_obj); @@ -715,10 +550,13 @@ vnode_pager_get_object_size( } kern_return_t -vnode_pager_get_object_pathname( +vnode_pager_get_object_name( memory_object_t mem_obj, char *pathname, - vm_size_t *length_p) + vm_size_t pathname_len, + char *filename, + vm_size_t filename_len, + boolean_t *truncated_path_p) { vnode_pager_t vnode_object; @@ -728,15 +566,19 @@ vnode_pager_get_object_pathname( vnode_object = vnode_pager_lookup(mem_obj); - return vnode_pager_get_pathname(vnode_object->vnode_handle, - pathname, - length_p); + return vnode_pager_get_name(vnode_object->vnode_handle, + pathname, + pathname_len, + filename, + filename_len, + truncated_path_p); } kern_return_t -vnode_pager_get_object_filename( - memory_object_t mem_obj, - const char **filename) +vnode_pager_get_object_mtime( + memory_object_t mem_obj, + struct timespec *mtime, + struct timespec *cs_mtime) { vnode_pager_t vnode_object; @@ -746,26 +588,9 @@ vnode_pager_get_object_filename( vnode_object = vnode_pager_lookup(mem_obj); - return vnode_pager_get_filename(vnode_object->vnode_handle, - filename); -} - -kern_return_t -vnode_pager_get_object_cs_blobs( - memory_object_t mem_obj, - void **blobs) -{ - vnode_pager_t vnode_object; - - if (mem_obj == MEMORY_OBJECT_NULL || - mem_obj->mo_pager_ops != &vnode_pager_ops) { - return KERN_INVALID_ARGUMENT; - } - - vnode_object = vnode_pager_lookup(mem_obj); - - return vnode_pager_get_cs_blobs(vnode_object->vnode_handle, - blobs); + return vnode_pager_get_mtime(vnode_object->vnode_handle, + mtime, + cs_mtime); } #if CHECK_CS_VALIDATION_BITMAP @@ -805,7 +630,7 @@ vnode_pager_data_request( vnode_object = vnode_pager_lookup(mem_obj); - size = MAX_UPL_TRANSFER * PAGE_SIZE; + size = MAX_UPL_TRANSFER_BYTES; base_offset = offset; if (memory_object_cluster_size(vnode_object->control_handle, &base_offset, &size, &io_streaming, fault_info) != KERN_SUCCESS) @@ -824,7 +649,7 @@ void vnode_pager_reference( memory_object_t mem_obj) { - register vnode_pager_t vnode_object; + vnode_pager_t vnode_object; unsigned int new_ref_count; vnode_object = vnode_pager_lookup(mem_obj); @@ -839,7 +664,7 @@ void vnode_pager_deallocate( memory_object_t mem_obj) { - register vnode_pager_t vnode_object; + vnode_pager_t vnode_object; PAGER_DEBUG(PAGER_ALL, ("vnode_pager_deallocate: %p\n", mem_obj)); @@ -879,7 +704,7 @@ vnode_pager_synchronize( memory_object_size_t length, __unused vm_sync_t sync_flags) { - register vnode_pager_t vnode_object; + vnode_pager_t vnode_object; PAGER_DEBUG(PAGER_ALL, ("vnode_pager_synchronize: %p\n", mem_obj)); @@ -921,7 +746,7 @@ kern_return_t vnode_pager_last_unmap( memory_object_t mem_obj) { - register vnode_pager_t vnode_object; + vnode_pager_t vnode_object; PAGER_DEBUG(PAGER_ALL, ("vnode_pager_last_unmap: %p\n", mem_obj)); @@ -956,7 +781,7 @@ vnode_pager_cluster_write( upl_flags |= UPL_KEEPCACHED; while (cnt) { - size = (cnt < (PAGE_SIZE * MAX_UPL_TRANSFER)) ? cnt : (PAGE_SIZE * MAX_UPL_TRANSFER); /* effective max */ + size = (cnt < MAX_UPL_TRANSFER_BYTES) ? cnt : MAX_UPL_TRANSFER_BYTES; /* effective max */ assert((upl_size_t) size == size); vnode_pageout(vnode_object->vnode_handle, @@ -988,7 +813,7 @@ vnode_pager_cluster_write( * and then clip the size to insure we * don't request past the end of the underlying file */ - size = PAGE_SIZE * MAX_UPL_TRANSFER; + size = MAX_UPL_TRANSFER_BYTES; base_offset = offset & ~((signed)(size - 1)); if ((base_offset + size) > vnode_size) @@ -1006,7 +831,8 @@ vnode_pager_cluster_write( } assert((upl_size_t) size == size); vnode_pageout(vnode_object->vnode_handle, - NULL, (upl_offset_t)(offset - base_offset), base_offset, (upl_size_t) size, UPL_VNODE_PAGER, NULL); + NULL, (upl_offset_t)(offset - base_offset), base_offset, (upl_size_t) size, + (upl_flags & UPL_IOSYNC) | UPL_VNODE_PAGER, NULL); } } @@ -1098,7 +924,7 @@ vnode_pager_t vnode_object_create( struct vnode *vp) { - register vnode_pager_t vnode_object; + vnode_pager_t vnode_object; vnode_object = (struct vnode_pager *) zalloc(vnode_pager_zone); if (vnode_object == VNODE_PAGER_NULL) @@ -1135,6 +961,18 @@ vnode_pager_lookup( } +struct vnode * +vnode_pager_lookup_vnode( + memory_object_t name) +{ + vnode_pager_t vnode_object; + vnode_object = (vnode_pager_t)name; + if(vnode_object->pager_ops == &vnode_pager_ops) + return (vnode_object->vnode_handle); + else + return NULL; +} + /*********************** proc_info implementation *************/ #include @@ -1179,13 +1017,13 @@ fill_procregioninfo(task_t task, uint64_t arg, struct proc_regioninfo_internal * start = entry->vme_start; - pinfo->pri_offset = entry->offset; + pinfo->pri_offset = VME_OFFSET(entry); pinfo->pri_protection = entry->protection; pinfo->pri_max_protection = entry->max_protection; pinfo->pri_inheritance = entry->inheritance; pinfo->pri_behavior = entry->behavior; pinfo->pri_user_wired_count = entry->user_wired_count; - pinfo->pri_user_tag = entry->alias; + pinfo->pri_user_tag = VME_ALIAS(entry); if (entry->is_sub_map) { pinfo->pri_flags |= PROC_REGION_SUBMAP; @@ -1196,7 +1034,7 @@ fill_procregioninfo(task_t task, uint64_t arg, struct proc_regioninfo_internal * extended.protection = entry->protection; - extended.user_tag = entry->alias; + extended.user_tag = VME_ALIAS(entry); extended.pages_resident = 0; extended.pages_swapped_out = 0; extended.pages_shared_now_private = 0; @@ -1204,7 +1042,7 @@ fill_procregioninfo(task_t task, uint64_t arg, struct proc_regioninfo_internal * extended.external_pager = 0; extended.shadow_depth = 0; - vm_map_region_walk(map, start, entry, entry->offset, entry->vme_end - start, &extended); + vm_map_region_walk(map, start, entry, VME_OFFSET(entry), entry->vme_end - start, &extended); if (extended.external_pager && extended.ref_count == 2 && extended.share_mode == SM_SHARED) extended.share_mode = SM_PRIVATE; @@ -1245,6 +1083,86 @@ fill_procregioninfo(task_t task, uint64_t arg, struct proc_regioninfo_internal * return(1); } +int +fill_procregioninfo_onlymappedvnodes(task_t task, uint64_t arg, struct proc_regioninfo_internal *pinfo, uintptr_t *vnodeaddr, uint32_t *vid) +{ + + vm_map_t map; + vm_map_offset_t address = (vm_map_offset_t )arg; + vm_map_entry_t tmp_entry; + vm_map_entry_t entry; + + task_lock(task); + map = task->map; + if (map == VM_MAP_NULL) + { + task_unlock(task); + return(0); + } + vm_map_reference(map); + task_unlock(task); + + vm_map_lock_read(map); + + if (!vm_map_lookup_entry(map, address, &tmp_entry)) { + if ((entry = tmp_entry->vme_next) == vm_map_to_entry(map)) { + vm_map_unlock_read(map); + vm_map_deallocate(map); + return(0); + } + } else { + entry = tmp_entry; + } + + while (entry != vm_map_to_entry(map)) { + *vnodeaddr = 0; + *vid = 0; + + if (entry->is_sub_map == 0) { + if (fill_vnodeinfoforaddr(entry, vnodeaddr, vid)) { + + pinfo->pri_offset = VME_OFFSET(entry); + pinfo->pri_protection = entry->protection; + pinfo->pri_max_protection = entry->max_protection; + pinfo->pri_inheritance = entry->inheritance; + pinfo->pri_behavior = entry->behavior; + pinfo->pri_user_wired_count = entry->user_wired_count; + pinfo->pri_user_tag = VME_ALIAS(entry); + + if (entry->is_shared) + pinfo->pri_flags |= PROC_REGION_SHARED; + + pinfo->pri_pages_resident = 0; + pinfo->pri_pages_shared_now_private = 0; + pinfo->pri_pages_swapped_out = 0; + pinfo->pri_pages_dirtied = 0; + pinfo->pri_ref_count = 0; + pinfo->pri_shadow_depth = 0; + pinfo->pri_share_mode = 0; + + pinfo->pri_private_pages_resident = 0; + pinfo->pri_shared_pages_resident = 0; + pinfo->pri_obj_id = 0; + + pinfo->pri_address = (uint64_t)entry->vme_start; + pinfo->pri_size = (uint64_t)(entry->vme_end - entry->vme_start); + pinfo->pri_depth = 0; + + vm_map_unlock_read(map); + vm_map_deallocate(map); + return(1); + } + } + + /* Keep searching for a vnode-backed mapping */ + entry = entry->vme_next; + } + + vm_map_unlock_read(map); + vm_map_deallocate(map); + return(0); +} + static int fill_vnodeinfoforaddr( vm_map_entry_t entry, @@ -1265,7 +1183,7 @@ fill_vnodeinfoforaddr( * The last object in the shadow chain has the * relevant pager information. */ - top_object = entry->object.vm_object; + top_object = VME_OBJECT(entry); if (top_object == VM_OBJECT_NULL) { object = VM_OBJECT_NULL; shadow_depth = 0; @@ -1329,6 +1247,23 @@ vnode_pager_get_object_vnode ( return(KERN_FAILURE); } +#if CONFIG_IOSCHED +kern_return_t +vnode_pager_get_object_devvp( + memory_object_t mem_obj, + uintptr_t *devvp) +{ + struct vnode *vp; + uint32_t vid; + + if(vnode_pager_get_object_vnode(mem_obj, (uintptr_t *)&vp, (uint32_t *)&vid) != KERN_SUCCESS) + return (KERN_FAILURE); + *devvp = (uintptr_t)vnode_mountdevvp(vp); + if (*devvp) + return (KERN_SUCCESS); + return (KERN_FAILURE); +} +#endif /* * Find the underlying vnode object for the given vm_map_entry. If found, return with the @@ -1351,7 +1286,7 @@ find_vnode_object( * relevant pager information. */ - top_object = entry->object.vm_object; + top_object = VME_OBJECT(entry); if (top_object) { vm_object_lock(top_object);