* Copyright (c) 2000-2006 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
* 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,
* 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) 1998 Apple Computer, Inc. All rights reserved.
#include <sys/disk.h>
#include <sys/conf.h>
#include <sys/content_protection.h>
+#include <sys/fsctl.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <pexpert/pexpert.h>
#include <IOKit/IOPolledInterface.h>
+#define HIBERNATE_MIN_PHYSICAL_LBA_512 (34)
+#define HIBERNATE_MIN_PHYSICAL_LBA_4096 (6)
+#define HIBERNATE_MIN_FILE_SIZE (1024*1024)
+
/* This function is called from kern_sysctl in the current process context;
* it is exported with the System6.0.exports, but this appears to be a legacy
* export, as there are no internal consumers.
int
get_kernel_symfile(__unused proc_t p, __unused char const **symfile)
{
- return KERN_FAILURE;
+ return KERN_FAILURE;
}
-struct kern_direct_file_io_ref_t
-{
- vfs_context_t ctx;
- struct vnode * vp;
- dev_t device;
- uint32_t blksize;
- off_t filelength;
- char cf;
- char pinned;
+struct kern_direct_file_io_ref_t {
+ vfs_context_t ctx;
+ struct vnode * vp;
+ dev_t device;
+ uint32_t blksize;
+ off_t filelength;
+ char cf;
+ char pinned;
+ char frozen;
+ char wbcranged;
};
-static int file_ioctl(void * p1, void * p2, u_long theIoctl, caddr_t result)
+static int
+file_ioctl(void * p1, void * p2, u_long theIoctl, caddr_t result)
{
- dev_t device = *(dev_t*) p1;
+ dev_t device = *(dev_t*) p1;
- return ((*bdevsw[major(device)].d_ioctl)
- (device, theIoctl, result, S_IFBLK, p2));
+ return (*bdevsw[major(device)].d_ioctl)
+ (device, theIoctl, result, S_IFBLK, p2);
}
-static int device_ioctl(void * p1, __unused void * p2, u_long theIoctl, caddr_t result)
+static int
+device_ioctl(void * p1, __unused void * p2, u_long theIoctl, caddr_t result)
{
- return (VNOP_IOCTL(p1, theIoctl, result, 0, p2));
+ return VNOP_IOCTL(p1, theIoctl, result, 0, p2);
}
static int
kern_ioctl_file_extents(struct kern_direct_file_io_ref_t * ref, u_long theIoctl, off_t offset, off_t end)
{
- int error = 0;
- int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
- void * p1;
- void * p2;
- uint64_t fileblk;
- size_t filechunk;
- dk_extent_t extent;
- dk_unmap_t unmap;
- _dk_cs_pin_t pin;
-
- bzero(&extent, sizeof(dk_extent_t));
- bzero(&unmap, sizeof(dk_unmap_t));
- bzero(&pin, sizeof(pin));
- if (ref->vp->v_type == VREG)
- {
- p1 = &ref->device;
- p2 = kernproc;
- do_ioctl = &file_ioctl;
- }
- else
- {
- /* Partition. */
- p1 = ref->vp;
- p2 = ref->ctx;
- do_ioctl = &device_ioctl;
- }
-
- if (_DKIOCCSPINEXTENT == theIoctl) {
- /* Tell CS the image size, so it knows whether to place the subsequent pins SSD/HDD */
- pin.cp_extent.length = end;
- pin.cp_flags = _DKIOCCSHIBERNATEIMGSIZE;
- (void) do_ioctl(p1, p2, _DKIOCCSPINEXTENT, (caddr_t)&pin);
- } else if (_DKIOCCSUNPINEXTENT == theIoctl) {
- /* Tell CS hibernation is done, so it can stop blocking overlapping writes */
- pin.cp_flags = _DKIOCCSPINDISCARDBLACKLIST;
- (void) do_ioctl(p1, p2, _DKIOCCSUNPINEXTENT, (caddr_t)&pin);
- }
-
- for (; offset < end; offset += filechunk)
- {
- if (ref->vp->v_type == VREG)
- {
- daddr64_t blkno;
- filechunk = 1*1024*1024*1024;
- if (filechunk > (size_t)(end - offset))
- filechunk = (size_t)(end - offset);
- error = VNOP_BLOCKMAP(ref->vp, offset, filechunk, &blkno,
- &filechunk, NULL, VNODE_WRITE, NULL);
- if (error) break;
- if (-1LL == blkno) continue;
- fileblk = blkno * ref->blksize;
- }
- else if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR))
- {
- fileblk = offset;
- filechunk = ref->filelength;
- }
-
- if (DKIOCUNMAP == theIoctl)
- {
- extent.offset = fileblk;
- extent.length = filechunk;
- unmap.extents = &extent;
- unmap.extentsCount = 1;
- error = do_ioctl(p1, p2, theIoctl, (caddr_t)&unmap);
-// printf("DKIOCUNMAP(%d) 0x%qx, 0x%qx\n", error, extent.offset, extent.length);
- }
- else if (_DKIOCCSPINEXTENT == theIoctl)
- {
- pin.cp_extent.offset = fileblk;
- pin.cp_extent.length = filechunk;
- pin.cp_flags = _DKIOCCSPINFORHIBERNATION;
- error = do_ioctl(p1, p2, theIoctl, (caddr_t)&pin);
- if (error && (ENOTTY != error))
- {
- printf("_DKIOCCSPINEXTENT(%d) 0x%qx, 0x%qx\n", error, pin.cp_extent.offset, pin.cp_extent.length);
- }
- }
- else if (_DKIOCCSUNPINEXTENT == theIoctl)
- {
- pin.cp_extent.offset = fileblk;
- pin.cp_extent.length = filechunk;
- pin.cp_flags = _DKIOCCSPINFORHIBERNATION;
- error = do_ioctl(p1, p2, theIoctl, (caddr_t)&pin);
- if (error && (ENOTTY != error))
- {
- printf("_DKIOCCSUNPINEXTENT(%d) 0x%qx, 0x%qx\n", error, pin.cp_extent.offset, pin.cp_extent.length);
- }
- }
- else error = EINVAL;
-
- if (error) break;
- }
- return (error);
+ int error = 0;
+ int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
+ void * p1;
+ void * p2;
+ uint64_t fileblk;
+ size_t filechunk;
+ dk_extent_t extent;
+ dk_unmap_t unmap;
+ _dk_cs_pin_t pin;
+
+ bzero(&extent, sizeof(dk_extent_t));
+ bzero(&unmap, sizeof(dk_unmap_t));
+ bzero(&pin, sizeof(pin));
+ if (ref->vp->v_type == VREG) {
+ p1 = &ref->device;
+ p2 = kernproc;
+ do_ioctl = &file_ioctl;
+ } else {
+ /* Partition. */
+ p1 = ref->vp;
+ p2 = ref->ctx;
+ do_ioctl = &device_ioctl;
+ }
+
+ if (_DKIOCCSPINEXTENT == theIoctl) {
+ /* Tell CS the image size, so it knows whether to place the subsequent pins SSD/HDD */
+ pin.cp_extent.length = end;
+ pin.cp_flags = _DKIOCCSHIBERNATEIMGSIZE;
+ (void) do_ioctl(p1, p2, _DKIOCCSPINEXTENT, (caddr_t)&pin);
+ } else if (_DKIOCCSUNPINEXTENT == theIoctl) {
+ /* Tell CS hibernation is done, so it can stop blocking overlapping writes */
+ pin.cp_flags = _DKIOCCSPINDISCARDBLACKLIST;
+ (void) do_ioctl(p1, p2, _DKIOCCSUNPINEXTENT, (caddr_t)&pin);
+ }
+
+ for (; offset < end; offset += filechunk) {
+ if (ref->vp->v_type == VREG) {
+ daddr64_t blkno;
+ filechunk = 1 * 1024 * 1024 * 1024;
+ if (filechunk > (size_t)(end - offset)) {
+ filechunk = (size_t)(end - offset);
+ }
+ error = VNOP_BLOCKMAP(ref->vp, offset, filechunk, &blkno,
+ &filechunk, NULL, VNODE_WRITE | VNODE_BLOCKMAP_NO_TRACK, NULL);
+ if (error) {
+ break;
+ }
+ if (-1LL == blkno) {
+ continue;
+ }
+ fileblk = blkno * ref->blksize;
+ } else if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR)) {
+ fileblk = offset;
+ filechunk = (unsigned long)((ref->filelength > ULONG_MAX) ? ULONG_MAX: ref->filelength);
+ }
+
+ if (DKIOCUNMAP == theIoctl) {
+ extent.offset = fileblk;
+ extent.length = filechunk;
+ unmap.extents = &extent;
+ unmap.extentsCount = 1;
+ error = do_ioctl(p1, p2, theIoctl, (caddr_t)&unmap);
+// printf("DKIOCUNMAP(%d) 0x%qx, 0x%qx\n", error, extent.offset, extent.length);
+ } else if (_DKIOCCSPINEXTENT == theIoctl) {
+ pin.cp_extent.offset = fileblk;
+ pin.cp_extent.length = filechunk;
+ pin.cp_flags = _DKIOCCSPINFORHIBERNATION;
+ error = do_ioctl(p1, p2, theIoctl, (caddr_t)&pin);
+ if (error && (ENOTTY != error)) {
+ printf("_DKIOCCSPINEXTENT(%d) 0x%qx, 0x%qx\n", error, pin.cp_extent.offset, pin.cp_extent.length);
+ }
+ } else if (_DKIOCCSUNPINEXTENT == theIoctl) {
+ pin.cp_extent.offset = fileblk;
+ pin.cp_extent.length = filechunk;
+ pin.cp_flags = _DKIOCCSPINFORHIBERNATION;
+ error = do_ioctl(p1, p2, theIoctl, (caddr_t)&pin);
+ if (error && (ENOTTY != error)) {
+ printf("_DKIOCCSUNPINEXTENT(%d) 0x%qx, 0x%qx\n", error, pin.cp_extent.offset, pin.cp_extent.length);
+ }
+ } else {
+ error = EINVAL;
+ }
+
+ if (error) {
+ break;
+ }
+ }
+ return error;
}
extern uint32_t freespace_mb(vnode_t vp);
struct kern_direct_file_io_ref_t *
-kern_open_file_for_direct_io(const char * name,
- boolean_t create_file,
- kern_get_file_extents_callback_t callback,
- void * callback_ref,
- off_t set_file_size,
- off_t fs_free_size,
- off_t write_file_offset,
- void * write_file_addr,
- size_t write_file_len,
- dev_t * partition_device_result,
- dev_t * image_device_result,
- uint64_t * partitionbase_result,
- uint64_t * maxiocount_result,
- uint32_t * oflags)
+kern_open_file_for_direct_io(const char * name,
+ uint32_t iflags,
+ kern_get_file_extents_callback_t callback,
+ void * callback_ref,
+ off_t set_file_size,
+ off_t fs_free_size,
+ off_t write_file_offset,
+ void * write_file_addr,
+ size_t write_file_len,
+ dev_t * partition_device_result,
+ dev_t * image_device_result,
+ uint64_t * partitionbase_result,
+ uint64_t * maxiocount_result,
+ uint32_t * oflags)
{
- struct kern_direct_file_io_ref_t * ref;
-
- proc_t p;
- struct vnode_attr va;
- int error;
- off_t f_offset;
- uint64_t fileblk;
- size_t filechunk;
- uint64_t physoffset;
- dev_t device;
- dev_t target = 0;
- int isssd = 0;
- uint32_t flags = 0;
- uint32_t blksize;
- off_t maxiocount, count, segcount;
- boolean_t locked = FALSE;
- int fmode, cmode;
- struct nameidata nd;
- u_int32_t ndflags;
- off_t mpFree;
-
- int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
- void * p1 = NULL;
- void * p2 = NULL;
-
- error = EFAULT;
-
- ref = (struct kern_direct_file_io_ref_t *) kalloc(sizeof(struct kern_direct_file_io_ref_t));
- if (!ref)
- {
+ struct kern_direct_file_io_ref_t * ref;
+
+ proc_t p;
+ struct vnode_attr va;
+ dk_apfs_wbc_range_t wbc_range;
+ int error;
+ off_t f_offset;
+ uint64_t fileblk;
+ size_t filechunk;
+ uint64_t physoffset, minoffset;
+ dev_t device;
+ dev_t target = 0;
+ int isssd = 0;
+ uint32_t flags = 0;
+ uint32_t blksize;
+ off_t maxiocount, count, segcount, wbctotal;
+ boolean_t locked = FALSE;
+ int fmode;
+ mode_t cmode;
+ struct nameidata nd;
+ u_int32_t ndflags;
+ off_t mpFree;
+
+ int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
+ void * p1 = NULL;
+ void * p2 = NULL;
+
error = EFAULT;
- goto out;
- }
-
- bzero(ref, sizeof(*ref));
- p = kernproc;
- ref->ctx = vfs_context_kernel();
-
- fmode = (create_file) ? (O_CREAT | FWRITE) : FWRITE;
- cmode = S_IRUSR | S_IWUSR;
- ndflags = NOFOLLOW;
- NDINIT(&nd, LOOKUP, OP_OPEN, ndflags, UIO_SYSSPACE, CAST_USER_ADDR_T(name), ref->ctx);
- VATTR_INIT(&va);
- VATTR_SET(&va, va_mode, cmode);
- VATTR_SET(&va, va_dataprotect_flags, VA_DP_RAWENCRYPTED);
- VATTR_SET(&va, va_dataprotect_class, PROTECTION_CLASS_D);
- if ((error = vn_open_auth(&nd, &fmode, &va))) {
- kprintf("vn_open_auth(fmode: %d, cmode: %d) failed with error: %d\n", fmode, cmode, error);
- goto out;
- }
-
- ref->vp = nd.ni_vp;
- if (ref->vp->v_type == VREG)
- {
- vnode_lock_spin(ref->vp);
- SET(ref->vp->v_flag, VSWAP);
- vnode_unlock(ref->vp);
- }
-
- if (write_file_addr && write_file_len)
- {
- if ((error = kern_write_file(ref, write_file_offset, write_file_addr, write_file_len, IO_SKIP_ENCRYPTION))) {
- kprintf("kern_write_file() failed with error: %d\n", error);
+
+ ref = (struct kern_direct_file_io_ref_t *) kalloc(sizeof(struct kern_direct_file_io_ref_t));
+ if (!ref) {
+ error = EFAULT;
+ goto out;
+ }
+
+ bzero(ref, sizeof(*ref));
+ p = kernproc;
+ ref->ctx = vfs_context_kernel();
+
+ fmode = (kIOPolledFileCreate & iflags) ? (O_CREAT | FWRITE) : FWRITE;
+ cmode = S_IRUSR | S_IWUSR;
+ ndflags = NOFOLLOW;
+ NDINIT(&nd, LOOKUP, OP_OPEN, ndflags, UIO_SYSSPACE, CAST_USER_ADDR_T(name), ref->ctx);
+ VATTR_INIT(&va);
+ VATTR_SET(&va, va_mode, cmode);
+ VATTR_SET(&va, va_dataprotect_flags, VA_DP_RAWENCRYPTED);
+ VATTR_SET(&va, va_dataprotect_class, PROTECTION_CLASS_D);
+ if ((error = vn_open_auth(&nd, &fmode, &va))) {
+ kprintf("vn_open_auth(fmode: %d, cmode: %d) failed with error: %d\n", fmode, cmode, error);
goto out;
}
- }
-
- VATTR_INIT(&va);
- VATTR_WANTED(&va, va_rdev);
- VATTR_WANTED(&va, va_fsid);
- VATTR_WANTED(&va, va_devid);
- VATTR_WANTED(&va, va_data_size);
- VATTR_WANTED(&va, va_data_alloc);
- VATTR_WANTED(&va, va_nlink);
- error = EFAULT;
- if (vnode_getattr(ref->vp, &va, ref->ctx)) goto out;
-
- mpFree = freespace_mb(ref->vp);
- mpFree <<= 20;
- kprintf("kern_direct_file(%s): vp size %qd, alloc %qd, mp free %qd, keep free %qd\n",
- name, va.va_data_size, va.va_data_alloc, mpFree, fs_free_size);
-
- if (ref->vp->v_type == VREG)
- {
- /* Don't dump files with links. */
- if (va.va_nlink != 1) goto out;
-
- device = (VATTR_IS_SUPPORTED(&va, va_devid)) ? va.va_devid : va.va_fsid;
- ref->filelength = va.va_data_size;
-
- p1 = &device;
- p2 = p;
- do_ioctl = &file_ioctl;
-
- if (set_file_size)
- {
- if (fs_free_size)
- {
- mpFree += va.va_data_alloc;
- if ((mpFree < set_file_size) || ((mpFree - set_file_size) < fs_free_size))
- {
- error = ENOSPC;
- goto out;
+
+ ref->vp = nd.ni_vp;
+ if (ref->vp->v_type == VREG) {
+ vnode_lock_spin(ref->vp);
+ SET(ref->vp->v_flag, VSWAP);
+ vnode_unlock(ref->vp);
+ }
+
+ if (write_file_addr && write_file_len) {
+ if ((error = kern_write_file(ref, write_file_offset, write_file_addr, write_file_len, IO_SKIP_ENCRYPTION))) {
+ kprintf("kern_write_file() failed with error: %d\n", error);
+ goto out;
}
- }
- error = vnode_setsize(ref->vp, set_file_size, IO_NOZEROFILL | IO_NOAUTH, ref->ctx);
- if (error) goto out;
- ref->filelength = set_file_size;
- }
- }
- else if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR))
- {
- /* Partition. */
- device = va.va_rdev;
-
- p1 = ref->vp;
- p2 = ref->ctx;
- do_ioctl = &device_ioctl;
- }
- else
- {
- /* Don't dump to non-regular files. */
- error = EFAULT;
- goto out;
- }
- ref->device = device;
-
- // probe for CF
- dk_corestorage_info_t cs_info;
- memset(&cs_info, 0, sizeof(dk_corestorage_info_t));
- error = do_ioctl(p1, p2, DKIOCCORESTORAGE, (caddr_t)&cs_info);
- ref->cf = (error == 0) && (cs_info.flags & DK_CORESTORAGE_ENABLE_HOTFILES);
-
- // get block size
-
- error = do_ioctl(p1, p2, DKIOCGETBLOCKSIZE, (caddr_t) &ref->blksize);
- if (error)
- goto out;
-
- if (ref->vp->v_type != VREG)
- {
- error = do_ioctl(p1, p2, DKIOCGETBLOCKCOUNT, (caddr_t) &fileblk);
- if (error) goto out;
- ref->filelength = fileblk * ref->blksize;
- }
-
- // pin logical extents
-
- error = kern_ioctl_file_extents(ref, _DKIOCCSPINEXTENT, 0, ref->filelength);
- if (error && (ENOTTY != error)) goto out;
- ref->pinned = (error == 0);
-
- // generate the block list
-
- error = do_ioctl(p1, p2, DKIOCLOCKPHYSICALEXTENTS, NULL);
- if (error) goto out;
- locked = TRUE;
-
- f_offset = 0;
- for (; f_offset < ref->filelength; f_offset += filechunk)
- {
- if (ref->vp->v_type == VREG)
- {
- filechunk = 1*1024*1024*1024;
- daddr64_t blkno;
-
- error = VNOP_BLOCKMAP(ref->vp, f_offset, filechunk, &blkno,
- &filechunk, NULL, VNODE_WRITE, NULL);
- if (error) goto out;
- if (-1LL == blkno) continue;
- fileblk = blkno * ref->blksize;
- }
- else if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR))
- {
- fileblk = f_offset;
- filechunk = f_offset ? 0 : ref->filelength;
- }
-
- physoffset = 0;
- while (physoffset < filechunk)
- {
- dk_physical_extent_t getphysreq;
- bzero(&getphysreq, sizeof(getphysreq));
-
- getphysreq.offset = fileblk + physoffset;
- getphysreq.length = (filechunk - physoffset);
- error = do_ioctl(p1, p2, DKIOCGETPHYSICALEXTENT, (caddr_t) &getphysreq);
- if (error) goto out;
- if (!target)
- {
- target = getphysreq.dev;
- }
- else if (target != getphysreq.dev)
- {
- error = ENOTSUP;
- goto out;
- }
+ }
+
+ VATTR_INIT(&va);
+ VATTR_WANTED(&va, va_rdev);
+ VATTR_WANTED(&va, va_fsid);
+ VATTR_WANTED(&va, va_devid);
+ VATTR_WANTED(&va, va_data_size);
+ VATTR_WANTED(&va, va_data_alloc);
+ VATTR_WANTED(&va, va_nlink);
+ error = EFAULT;
+ if (vnode_getattr(ref->vp, &va, ref->ctx)) {
+ goto out;
+ }
+
+ wbctotal = 0;
+ mpFree = freespace_mb(ref->vp);
+ mpFree <<= 20;
+ kprintf("kern_direct_file(%s): vp size %qd, alloc %qd, mp free %qd, keep free %qd\n",
+ name, va.va_data_size, va.va_data_alloc, mpFree, fs_free_size);
+
+ if (ref->vp->v_type == VREG) {
+ /* Don't dump files with links. */
+ if (va.va_nlink != 1) {
+ goto out;
+ }
+
+ device = (VATTR_IS_SUPPORTED(&va, va_devid)) ? va.va_devid : va.va_fsid;
+ ref->filelength = va.va_data_size;
+
+ p1 = &device;
+ p2 = p;
+ do_ioctl = &file_ioctl;
+
+ if (kIOPolledFileHibernate & iflags) {
+ error = do_ioctl(p1, p2, DKIOCAPFSGETWBCRANGE, (caddr_t) &wbc_range);
+ ref->wbcranged = (error == 0);
+ }
+ if (ref->wbcranged) {
+ uint32_t idx;
+ assert(wbc_range.count <= (sizeof(wbc_range.extents) / sizeof(wbc_range.extents[0])));
+ for (idx = 0; idx < wbc_range.count; idx++) {
+ wbctotal += wbc_range.extents[idx].length;
+ }
+ kprintf("kern_direct_file(%s): wbc %qd\n", name, wbctotal);
+ if (wbctotal) {
+ target = wbc_range.dev;
+ }
+ }
+
+ if (set_file_size) {
+ if (wbctotal) {
+ if (wbctotal >= set_file_size) {
+ set_file_size = HIBERNATE_MIN_FILE_SIZE;
+ } else {
+ set_file_size -= wbctotal;
+ if (set_file_size < HIBERNATE_MIN_FILE_SIZE) {
+ set_file_size = HIBERNATE_MIN_FILE_SIZE;
+ }
+ }
+ }
+ if (fs_free_size) {
+ mpFree += va.va_data_alloc;
+ if ((mpFree < set_file_size) || ((mpFree - set_file_size) < fs_free_size)) {
+ error = ENOSPC;
+ goto out;
+ }
+ }
+ error = vnode_setsize(ref->vp, set_file_size, IO_NOZEROFILL | IO_NOAUTH, ref->ctx);
+ if (error) {
+ goto out;
+ }
+ ref->filelength = set_file_size;
+ }
+ } else if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR)) {
+ /* Partition. */
+ device = va.va_rdev;
+
+ p1 = ref->vp;
+ p2 = ref->ctx;
+ do_ioctl = &device_ioctl;
+ } else {
+ /* Don't dump to non-regular files. */
+ error = EFAULT;
+ goto out;
+ }
+ ref->device = device;
+
+ // probe for CF
+ dk_corestorage_info_t cs_info;
+ memset(&cs_info, 0, sizeof(dk_corestorage_info_t));
+ error = do_ioctl(p1, p2, DKIOCCORESTORAGE, (caddr_t)&cs_info);
+ ref->cf = (error == 0) && (cs_info.flags & DK_CORESTORAGE_ENABLE_HOTFILES);
+
+ // get block size
+
+ error = do_ioctl(p1, p2, DKIOCGETBLOCKSIZE, (caddr_t) &ref->blksize);
+ if (error) {
+ goto out;
+ }
+
+ if (ref->blksize == 4096) {
+ minoffset = HIBERNATE_MIN_PHYSICAL_LBA_4096 * ref->blksize;
+ } else {
+ minoffset = HIBERNATE_MIN_PHYSICAL_LBA_512 * ref->blksize;
+ }
+
+ if (ref->vp->v_type != VREG) {
+ error = do_ioctl(p1, p2, DKIOCGETBLOCKCOUNT, (caddr_t) &fileblk);
+ if (error) {
+ goto out;
+ }
+ ref->filelength = fileblk * ref->blksize;
+ }
+
+ // pin logical extents, CS version
+
+ error = kern_ioctl_file_extents(ref, _DKIOCCSPINEXTENT, 0, ref->filelength);
+ if (error && (ENOTTY != error)) {
+ goto out;
+ }
+ ref->pinned = (error == 0);
+
+ // pin logical extents, apfs version
+
+ error = VNOP_IOCTL(ref->vp, FSCTL_FREEZE_EXTENTS, NULL, 0, ref->ctx);
+ if (error && (ENOTTY != error)) {
+ goto out;
+ }
+ ref->frozen = (error == 0);
+
+ // generate the block list
+
+ error = do_ioctl(p1, p2, DKIOCLOCKPHYSICALEXTENTS, NULL);
+ if (error) {
+ goto out;
+ }
+ locked = TRUE;
+
+ f_offset = 0;
+ for (; f_offset < ref->filelength; f_offset += filechunk) {
+ if (ref->vp->v_type == VREG) {
+ filechunk = 1 * 1024 * 1024 * 1024;
+ daddr64_t blkno;
+
+ error = VNOP_BLOCKMAP(ref->vp, f_offset, filechunk, &blkno,
+ &filechunk, NULL, VNODE_WRITE | VNODE_BLOCKMAP_NO_TRACK, NULL);
+ if (error) {
+ goto out;
+ }
+ if (-1LL == blkno) {
+ continue;
+ }
+ fileblk = blkno * ref->blksize;
+ } else if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR)) {
+ fileblk = f_offset;
+ filechunk = f_offset ? 0 : (unsigned long)ref->filelength;
+ }
+
+ physoffset = 0;
+ while (physoffset < filechunk) {
+ dk_physical_extent_t getphysreq;
+ bzero(&getphysreq, sizeof(getphysreq));
+
+ getphysreq.offset = fileblk + physoffset;
+ getphysreq.length = (filechunk - physoffset);
+ error = do_ioctl(p1, p2, DKIOCGETPHYSICALEXTENT, (caddr_t) &getphysreq);
+ if (error) {
+ goto out;
+ }
+ if (!target) {
+ target = getphysreq.dev;
+ } else if (target != getphysreq.dev) {
+ error = ENOTSUP;
+ goto out;
+ }
+
+ assert(getphysreq.offset >= minoffset);
+
#if HIBFRAGMENT
- uint64_t rev;
- for (rev = 4096; rev <= getphysreq.length; rev += 4096)
- {
- callback(callback_ref, getphysreq.offset + getphysreq.length - rev, 4096);
- }
+ uint64_t rev;
+ for (rev = 4096; rev <= getphysreq.length; rev += 4096) {
+ callback(callback_ref, getphysreq.offset + getphysreq.length - rev, 4096);
+ }
#else
- callback(callback_ref, getphysreq.offset, getphysreq.length);
+ callback(callback_ref, getphysreq.offset, getphysreq.length);
#endif
- physoffset += getphysreq.length;
- }
- }
- callback(callback_ref, 0ULL, 0ULL);
-
- if (ref->vp->v_type == VREG) p1 = ⌖
- else
- {
- p1 = ⌖
- p2 = p;
- do_ioctl = &file_ioctl;
- }
-
- // get partition base
-
- if (partitionbase_result)
- {
- error = do_ioctl(p1, p2, DKIOCGETBASE, (caddr_t) partitionbase_result);
- if (error)
- goto out;
- }
-
- // get block size & constraints
-
- error = do_ioctl(p1, p2, DKIOCGETBLOCKSIZE, (caddr_t) &blksize);
- if (error)
- goto out;
-
- maxiocount = 1*1024*1024*1024;
-
- error = do_ioctl(p1, p2, DKIOCGETMAXBLOCKCOUNTREAD, (caddr_t) &count);
- if (error)
- count = 0;
- count *= blksize;
- if (count && (count < maxiocount))
- maxiocount = count;
-
- error = do_ioctl(p1, p2, DKIOCGETMAXBLOCKCOUNTWRITE, (caddr_t) &count);
- if (error)
- count = 0;
- count *= blksize;
- if (count && (count < maxiocount))
- maxiocount = count;
-
- error = do_ioctl(p1, p2, DKIOCGETMAXBYTECOUNTREAD, (caddr_t) &count);
- if (error)
- count = 0;
- if (count && (count < maxiocount))
- maxiocount = count;
-
- error = do_ioctl(p1, p2, DKIOCGETMAXBYTECOUNTWRITE, (caddr_t) &count);
- if (error)
- count = 0;
- if (count && (count < maxiocount))
- maxiocount = count;
-
- error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTBYTECOUNTREAD, (caddr_t) &count);
- if (!error)
- error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTCOUNTREAD, (caddr_t) &segcount);
- if (error)
- count = segcount = 0;
- count *= segcount;
- if (count && (count < maxiocount))
- maxiocount = count;
-
- error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTBYTECOUNTWRITE, (caddr_t) &count);
- if (!error)
- error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTCOUNTWRITE, (caddr_t) &segcount);
- if (error)
- count = segcount = 0;
- count *= segcount;
- if (count && (count < maxiocount))
- maxiocount = count;
-
- kprintf("max io 0x%qx bytes\n", maxiocount);
- if (maxiocount_result)
- *maxiocount_result = maxiocount;
-
- error = do_ioctl(p1, p2, DKIOCISSOLIDSTATE, (caddr_t)&isssd);
- if (!error && isssd)
- flags |= kIOPolledFileSSD;
-
- if (partition_device_result)
- *partition_device_result = device;
- if (image_device_result)
- *image_device_result = target;
- if (oflags)
- *oflags = flags;
-
- if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR))
- {
- vnode_close(ref->vp, FWRITE, ref->ctx);
- ref->vp = NULLVP;
- ref->ctx = NULL;
- }
+ physoffset += getphysreq.length;
+ }
+ }
+ if (ref->wbcranged) {
+ uint32_t idx;
+ for (idx = 0; idx < wbc_range.count; idx++) {
+ assert(wbc_range.extents[idx].offset >= minoffset);
+ callback(callback_ref, wbc_range.extents[idx].offset, wbc_range.extents[idx].length);
+ }
+ }
+ callback(callback_ref, 0ULL, 0ULL);
+
+ if (ref->vp->v_type == VREG) {
+ p1 = ⌖
+ } else {
+ p1 = ⌖
+ p2 = p;
+ do_ioctl = &file_ioctl;
+ }
+
+ // get partition base
+
+ if (partitionbase_result) {
+ error = do_ioctl(p1, p2, DKIOCGETBASE, (caddr_t) partitionbase_result);
+ if (error) {
+ goto out;
+ }
+ }
+
+ // get block size & constraints
+
+ error = do_ioctl(p1, p2, DKIOCGETBLOCKSIZE, (caddr_t) &blksize);
+ if (error) {
+ goto out;
+ }
+
+ maxiocount = 1 * 1024 * 1024 * 1024;
+
+ error = do_ioctl(p1, p2, DKIOCGETMAXBLOCKCOUNTREAD, (caddr_t) &count);
+ if (error) {
+ count = 0;
+ }
+ count *= blksize;
+ if (count && (count < maxiocount)) {
+ maxiocount = count;
+ }
+
+ error = do_ioctl(p1, p2, DKIOCGETMAXBLOCKCOUNTWRITE, (caddr_t) &count);
+ if (error) {
+ count = 0;
+ }
+ count *= blksize;
+ if (count && (count < maxiocount)) {
+ maxiocount = count;
+ }
+
+ error = do_ioctl(p1, p2, DKIOCGETMAXBYTECOUNTREAD, (caddr_t) &count);
+ if (error) {
+ count = 0;
+ }
+ if (count && (count < maxiocount)) {
+ maxiocount = count;
+ }
+
+ error = do_ioctl(p1, p2, DKIOCGETMAXBYTECOUNTWRITE, (caddr_t) &count);
+ if (error) {
+ count = 0;
+ }
+ if (count && (count < maxiocount)) {
+ maxiocount = count;
+ }
+
+ error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTBYTECOUNTREAD, (caddr_t) &count);
+ if (!error) {
+ error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTCOUNTREAD, (caddr_t) &segcount);
+ }
+ if (error) {
+ count = segcount = 0;
+ }
+ count *= segcount;
+ if (count && (count < maxiocount)) {
+ maxiocount = count;
+ }
+
+ error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTBYTECOUNTWRITE, (caddr_t) &count);
+ if (!error) {
+ error = do_ioctl(p1, p2, DKIOCGETMAXSEGMENTCOUNTWRITE, (caddr_t) &segcount);
+ }
+ if (error) {
+ count = segcount = 0;
+ }
+ count *= segcount;
+ if (count && (count < maxiocount)) {
+ maxiocount = count;
+ }
+
+ kprintf("max io 0x%qx bytes\n", maxiocount);
+ if (maxiocount_result) {
+ *maxiocount_result = maxiocount;
+ }
+
+ error = do_ioctl(p1, p2, DKIOCISSOLIDSTATE, (caddr_t)&isssd);
+ if (!error && isssd) {
+ flags |= kIOPolledFileSSD;
+ }
+
+ if (partition_device_result) {
+ *partition_device_result = device;
+ }
+ if (image_device_result) {
+ *image_device_result = target;
+ }
+ if (oflags) {
+ *oflags = flags;
+ }
+
+ if ((ref->vp->v_type == VBLK) || (ref->vp->v_type == VCHR)) {
+ vnode_close(ref->vp, FWRITE, ref->ctx);
+ ref->vp = NULLVP;
+ ref->ctx = NULL;
+ }
out:
- printf("kern_open_file_for_direct_io(%p, %d)\n", ref, error);
+ printf("kern_open_file_for_direct_io(%p, %d)\n", ref, error);
- if (error && locked)
- {
- p1 = &device;
- (void) do_ioctl(p1, p2, DKIOCUNLOCKPHYSICALEXTENTS, NULL);
- }
+ if (error && locked) {
+ p1 = &device;
+ (void) do_ioctl(p1, p2, DKIOCUNLOCKPHYSICALEXTENTS, NULL);
+ }
- if (error && ref)
- {
- if (ref->vp)
- {
- (void) kern_ioctl_file_extents(ref, _DKIOCCSUNPINEXTENT, 0, (ref->pinned && ref->cf) ? ref->filelength : 0);
- vnode_close(ref->vp, FWRITE, ref->ctx);
- ref->vp = NULLVP;
+ if (error && ref) {
+ if (ref->vp) {
+ (void) kern_ioctl_file_extents(ref, _DKIOCCSUNPINEXTENT, 0, (ref->pinned && ref->cf) ? ref->filelength : 0);
+
+ if (ref->frozen) {
+ (void) VNOP_IOCTL(ref->vp, FSCTL_THAW_EXTENTS, NULL, 0, ref->ctx);
+ }
+ if (ref->wbcranged) {
+ (void) do_ioctl(p1, p2, DKIOCAPFSRELEASEWBCRANGE, (caddr_t) NULL);
+ }
+ vnode_close(ref->vp, FWRITE, ref->ctx);
+ ref->vp = NULLVP;
+ }
+ ref->ctx = NULL;
+ kfree(ref, sizeof(struct kern_direct_file_io_ref_t));
+ ref = NULL;
}
- ref->ctx = NULL;
- kfree(ref, sizeof(struct kern_direct_file_io_ref_t));
- ref = NULL;
- }
- return(ref);
+ return ref;
}
int
kern_write_file(struct kern_direct_file_io_ref_t * ref, off_t offset, void * addr, size_t len, int ioflag)
{
- return (vn_rdwr(UIO_WRITE, ref->vp,
- addr, len, offset,
- UIO_SYSSPACE, ioflag|IO_SYNC|IO_NODELOCKED|IO_UNIT,
- vfs_context_ucred(ref->ctx), (int *) 0,
- vfs_context_proc(ref->ctx)));
+ assert(len <= INT32_MAX);
+ return vn_rdwr(UIO_WRITE, ref->vp,
+ addr, (int)len, offset,
+ UIO_SYSSPACE, ioflag | IO_SYNC | IO_NODELOCKED | IO_UNIT,
+ vfs_context_ucred(ref->ctx), (int *) 0,
+ vfs_context_proc(ref->ctx));
}
int
kern_read_file(struct kern_direct_file_io_ref_t * ref, off_t offset, void * addr, size_t len, int ioflag)
{
- return (vn_rdwr(UIO_READ, ref->vp,
- addr, len, offset,
- UIO_SYSSPACE, ioflag|IO_SYNC|IO_NODELOCKED|IO_UNIT,
- vfs_context_ucred(ref->ctx), (int *) 0,
- vfs_context_proc(ref->ctx)));
+ assert(len <= INT32_MAX);
+ return vn_rdwr(UIO_READ, ref->vp,
+ addr, (int)len, offset,
+ UIO_SYSSPACE, ioflag | IO_SYNC | IO_NODELOCKED | IO_UNIT,
+ vfs_context_ucred(ref->ctx), (int *) 0,
+ vfs_context_proc(ref->ctx));
}
struct mount *
kern_file_mount(struct kern_direct_file_io_ref_t * ref)
{
- return (ref->vp->v_mount);
+ return ref->vp->v_mount;
}
void
kern_close_file_for_direct_io(struct kern_direct_file_io_ref_t * ref,
- off_t write_offset, void * addr, size_t write_length,
- off_t discard_offset, off_t discard_end)
+ off_t write_offset, void * addr, size_t write_length,
+ off_t discard_offset, off_t discard_end)
{
- int error;
- printf("kern_close_file_for_direct_io(%p)\n", ref);
-
- if (!ref) return;
-
- if (ref->vp)
- {
- int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
- void * p1;
- void * p2;
-
- if (ref->vp->v_type == VREG)
- {
- p1 = &ref->device;
- p2 = kernproc;
- do_ioctl = &file_ioctl;
- }
- else
- {
- /* Partition. */
- p1 = ref->vp;
- p2 = ref->ctx;
- do_ioctl = &device_ioctl;
- }
- (void) do_ioctl(p1, p2, DKIOCUNLOCKPHYSICALEXTENTS, NULL);
+ int error;
+ printf("kern_close_file_for_direct_io(%p)\n", ref);
+
+ if (!ref) {
+ return;
+ }
+
+ if (ref->vp) {
+ int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
+ void * p1;
+ void * p2;
+
+ discard_offset = ((discard_offset + ref->blksize - 1) & ~(((off_t) ref->blksize) - 1));
+ discard_end = ((discard_end) & ~(((off_t) ref->blksize) - 1));
+
+ if (ref->vp->v_type == VREG) {
+ p1 = &ref->device;
+ p2 = kernproc;
+ do_ioctl = &file_ioctl;
+ } else {
+ /* Partition. */
+ p1 = ref->vp;
+ p2 = ref->ctx;
+ do_ioctl = &device_ioctl;
+ }
+ (void) do_ioctl(p1, p2, DKIOCUNLOCKPHYSICALEXTENTS, NULL);
//XXX If unmapping extents then don't also need to unpin; except ...
//XXX if file unaligned (HFS 4k / Fusion 128k) then pin is superset and
(void) kern_ioctl_file_extents(ref, _DKIOCCSUNPINEXTENT, 0, (will_unpin) ? ref->filelength : 0);
- if (will_unmap)
- {
- (void) kern_ioctl_file_extents(ref, DKIOCUNMAP, discard_offset, (ref->cf) ? ref->filelength : discard_end);
- }
+ if (will_unmap) {
+ (void) kern_ioctl_file_extents(ref, DKIOCUNMAP, discard_offset, (ref->cf) ? ref->filelength : discard_end);
+ }
+
+ if (ref->frozen) {
+ (void) VNOP_IOCTL(ref->vp, FSCTL_THAW_EXTENTS, NULL, 0, ref->ctx);
+ }
+ if (ref->wbcranged) {
+ (void) do_ioctl(p1, p2, DKIOCAPFSRELEASEWBCRANGE, (caddr_t) NULL);
+ }
- if (addr && write_length)
- {
- (void) kern_write_file(ref, write_offset, addr, write_length, IO_SKIP_ENCRYPTION);
- }
+ if (addr && write_length) {
+ (void) kern_write_file(ref, write_offset, addr, write_length, IO_SKIP_ENCRYPTION);
+ }
- error = vnode_close(ref->vp, FWRITE, ref->ctx);
+ error = vnode_close(ref->vp, FWRITE, ref->ctx);
- ref->vp = NULLVP;
- kprintf("vnode_close(%d)\n", error);
+ ref->vp = NULLVP;
+ kprintf("vnode_close(%d)\n", error);
- }
+ }
- ref->ctx = NULL;
+ ref->ctx = NULL;
- kfree(ref, sizeof(struct kern_direct_file_io_ref_t));
+ kfree(ref, sizeof(struct kern_direct_file_io_ref_t));
}
projects / apple / xnu.git / blobdiff