X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/3e170ce000f1506b7b5d2c5c7faec85ceabb573d..cc8bc92ae4a8e9f1a1ab61bf83d34ad8150b3405:/osfmk/vm/bsd_vm.c diff --git a/osfmk/vm/bsd_vm.c b/osfmk/vm/bsd_vm.c index f7e485bde..b9d138421 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 @@ -113,20 +111,15 @@ const struct memory_object_pager_ops vnode_pager_ops = { }; typedef struct vnode_pager { - struct ipc_object_header pager_header; /* fake ip_kotype() */ - memory_object_pager_ops_t pager_ops; /* == &vnode_pager_ops */ + /* mandatory generic header */ + struct memory_object vn_pgr_hdr; + + /* pager-specific */ unsigned int ref_count; /* reference count */ - memory_object_control_t control_handle; /* mem object control handle */ 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 */ vnode_pager_t, @@ -153,6 +146,10 @@ 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; @@ -183,175 +180,6 @@ 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 @@ -375,6 +203,7 @@ 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) { @@ -395,14 +224,15 @@ 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) @@ -422,19 +252,12 @@ 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 - * encrypted swap pages - */ - 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) { @@ -447,7 +270,7 @@ 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; @@ -473,7 +296,7 @@ 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) << PAGE_SHIFT) + 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; @@ -517,8 +340,9 @@ memory_object_control_uiomove( } 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); } @@ -529,7 +353,7 @@ 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, @@ -542,6 +366,9 @@ vnode_pager_bootstrap(void) apple_protect_pager_bootstrap(); #endif /* CONFIG_CODE_DECRYPTION */ swapfile_pager_bootstrap(); +#if __arm64__ + fourk_pager_bootstrap(); +#endif /* __arm64__ */ return; } @@ -586,7 +413,7 @@ vnode_pager_init(memory_object_t mem_obj, memory_object_control_reference(control); - vnode_object->control_handle = control; + vnode_object->vn_pgr_hdr.mo_control = control; attributes.copy_strategy = MEMORY_OBJECT_COPY_DELAY; /* attributes.cluster_size = (1 << (CLUSTER_SHIFT + PAGE_SHIFT));*/ @@ -619,7 +446,7 @@ 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); @@ -760,24 +587,6 @@ vnode_pager_get_object_mtime( cs_mtime); } -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); -} - #if CHECK_CS_VALIDATION_BITMAP kern_return_t vnode_pager_cs_check_validation_bitmap( @@ -818,7 +627,9 @@ vnode_pager_data_request( 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) + if (memory_object_cluster_size(vnode_object->vn_pgr_hdr.mo_control, + &base_offset, &size, &io_streaming, + fault_info) != KERN_SUCCESS) size = PAGE_SIZE; assert(offset >= base_offset && @@ -834,7 +645,7 @@ 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); @@ -849,7 +660,7 @@ 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)); @@ -884,20 +695,13 @@ vnode_pager_terminate( */ kern_return_t vnode_pager_synchronize( - memory_object_t mem_obj, - memory_object_offset_t offset, - memory_object_size_t length, + __unused memory_object_t mem_obj, + __unused memory_object_offset_t offset, + __unused memory_object_size_t length, __unused vm_sync_t sync_flags) { - register vnode_pager_t vnode_object; - - PAGER_DEBUG(PAGER_ALL, ("vnode_pager_synchronize: %p\n", mem_obj)); - - vnode_object = vnode_pager_lookup(mem_obj); - - memory_object_synchronize_completed(vnode_object->control_handle, offset, length); - - return (KERN_SUCCESS); + panic("vnode_pager_synchronize: memory_object_synchronize no longer supported\n"); + return (KERN_FAILURE); } /* @@ -931,7 +735,7 @@ 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)); @@ -1067,9 +871,9 @@ vnode_pager_cluster_read( UPL_SET_INTERNAL); count = 0; assert((upl_size_t) cnt == cnt); - kr = memory_object_upl_request(vnode_object->control_handle, + kr = memory_object_upl_request(vnode_object->vn_pgr_hdr.mo_control, base_offset, (upl_size_t) cnt, - &upl, NULL, &count, uplflags); + &upl, NULL, &count, uplflags, VM_KERN_MEMORY_NONE); if (kr == KERN_SUCCESS) { upl_abort(upl, 0); upl_deallocate(upl); @@ -1090,18 +894,6 @@ vnode_pager_cluster_read( } - -/* - * - */ -void -vnode_pager_release_from_cache( - int *cnt) -{ - memory_object_free_from_cache( - &realhost, &vnode_pager_ops, cnt); -} - /* * */ @@ -1109,7 +901,7 @@ 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) @@ -1122,10 +914,11 @@ vnode_object_create( * we reserve the first word in the object for a fake ip_kotype * setting - that will tell vm_map to use it as a memory object. */ - vnode_object->pager_ops = &vnode_pager_ops; - vnode_object->pager_ikot = IKOT_MEMORY_OBJECT; + vnode_object->vn_pgr_hdr.mo_ikot = IKOT_MEMORY_OBJECT; + vnode_object->vn_pgr_hdr.mo_pager_ops = &vnode_pager_ops; + vnode_object->vn_pgr_hdr.mo_control = MEMORY_OBJECT_CONTROL_NULL; + vnode_object->ref_count = 1; - vnode_object->control_handle = MEMORY_OBJECT_CONTROL_NULL; vnode_object->vnode_handle = vp; return(vnode_object); @@ -1141,11 +934,23 @@ vnode_pager_lookup( vnode_pager_t vnode_object; vnode_object = (vnode_pager_t)name; - assert(vnode_object->pager_ops == &vnode_pager_ops); + assert(vnode_object->vn_pgr_hdr.mo_pager_ops == &vnode_pager_ops); return (vnode_object); } +struct vnode * +vnode_pager_lookup_vnode( + memory_object_t name) +{ + vnode_pager_t vnode_object; + vnode_object = (vnode_pager_t)name; + if(vnode_object->vn_pgr_hdr.mo_pager_ops == &vnode_pager_ops) + return (vnode_object->vnode_handle); + else + return NULL; +} + /*********************** proc_info implementation *************/ #include