/*
- * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple 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@
*/
#include <sys/disk.h>
#include <vm/vm_protos.h>
#include <vm/vm_pageout.h>
+#include <sys/content_protection.h>
void vm_swapfile_open(const char *path, vnode_t *vp);
void vm_swapfile_close(uint64_t path, vnode_t vp);
-int vm_swapfile_preallocate(vnode_t vp, uint64_t *size);
+int vm_swapfile_preallocate(vnode_t vp, uint64_t *size, boolean_t *pin);
uint64_t vm_swapfile_get_blksize(vnode_t vp);
uint64_t vm_swapfile_get_transfer_size(vnode_t vp);
-int vm_swapfile_io(vnode_t vp, uint64_t offset, uint64_t start, int npages, int flags);
+int vm_swapfile_io(vnode_t vp, uint64_t offset, uint64_t start, int npages, int flags, void *);
+int vm_record_file_write(struct vnode *vp, uint64_t offset, char *buf, int size);
+
+#if CONFIG_FREEZE
+int vm_swap_vol_get_budget(vnode_t vp, uint64_t *freeze_daily_budget);
+#endif /* CONFIG_FREEZE */
+
void
vm_swapfile_open(const char *path, vnode_t *vp)
{
int error = 0;
- vfs_context_t ctx = vfs_context_current();
+ vfs_context_t ctx = vfs_context_kernel();
- if ((error = vnode_open(path, (O_CREAT | FREAD | FWRITE), S_IRUSR | S_IWUSR, 0, vp, ctx))) {
+ if ((error = vnode_open(path, (O_CREAT | O_TRUNC | FREAD | FWRITE), S_IRUSR | S_IWUSR, 0, vp, ctx))) {
printf("Failed to open swap file %d\n", error);
*vp = NULL;
return;
- }
+ }
+
+ /*
+ * If MNT_IOFLAGS_NOSWAP is set, opening the swap file should fail.
+ * To avoid a race on the mount we only make this check after creating the
+ * vnode.
+ */
+ if ((*vp)->v_mount->mnt_kern_flag & MNTK_NOSWAP) {
+ vnode_put(*vp);
+ vm_swapfile_close((uint64_t)path, *vp);
+ *vp = NULL;
+ return;
+ }
vnode_put(*vp);
}
uint64_t
vm_swapfile_get_blksize(vnode_t vp)
{
- return ((uint64_t)vfs_devblocksize(vnode_mount(vp)));
+ return (uint64_t)vfs_devblocksize(vnode_mount(vp));
}
uint64_t
vm_swapfile_get_transfer_size(vnode_t vp)
{
- return((uint64_t)vp->v_mount->mnt_vfsstat.f_iosize);
+ return (uint64_t)vp->v_mount->mnt_vfsstat.f_iosize;
}
-int unlink1(vfs_context_t, struct nameidata *, int);
+int unlink1(vfs_context_t, vnode_t, user_addr_t, enum uio_seg, int);
void
vm_swapfile_close(uint64_t path_addr, vnode_t vp)
{
- struct nameidata nd;
- vfs_context_t context = vfs_context_current();
- int error = 0;
+ vfs_context_t context = vfs_context_kernel();
+ int error;
vnode_getwithref(vp);
vnode_close(vp, 0, context);
-
- NDINIT(&nd, DELETE, OP_UNLINK, AUDITVNPATH1, UIO_SYSSPACE,
- path_addr, context);
- error = unlink1(context, &nd, 0);
+ error = unlink1(context, NULLVP, CAST_USER_ADDR_T(path_addr),
+ UIO_SYSSPACE, 0);
+
+#if DEVELOPMENT || DEBUG
+ if (error) {
+ printf("%s : unlink of %s failed with error %d", __FUNCTION__,
+ (char *)path_addr, error);
+ }
+#endif
}
int
-vm_swapfile_preallocate(vnode_t vp, uint64_t *size)
+vm_swapfile_preallocate(vnode_t vp, uint64_t *size, boolean_t *pin)
{
- int error = 0;
- uint64_t file_size = 0;
- vfs_context_t ctx = NULL;
+ int error = 0;
+ uint64_t file_size = 0;
+ vfs_context_t ctx = NULL;
+#if CONFIG_FREEZE
+ struct vnode_attr va;
+#endif /* CONFIG_FREEZE */
+ ctx = vfs_context_kernel();
- ctx = vfs_context_current();
-
-#if CONFIG_PROTECT
- {
-#if 0 // <rdar://11771612>
+ error = vnode_setsize(vp, *size, IO_NOZEROFILL, ctx);
- if ((error = cp_vnode_setclass(vp, PROTECTION_CLASS_F))) {
- if(config_protect_bug) {
- printf("swap protection class set failed with %d\n", error);
- } else {
- panic("swap protection class set failed with %d\n", error);
- }
- }
-#endif
- /* initialize content protection keys manually */
- if ((error = cp_handle_vnop(vp, CP_WRITE_ACCESS, 0)) != 0) {
- printf("Content Protection key failure on swap: %d\n", error);
- vnode_put(vp);
- vp = NULL;
- goto done;
- }
+ if (error) {
+ printf("vnode_setsize for swap files failed: %d\n", error);
+ goto done;
}
-#endif
-
- /*
- * This check exists because dynamic_pager creates the 1st swapfile,
- * swapfile0, for us from user-space in a supported manner (with IO_NOZEROFILL etc).
- *
- * If dynamic_pager, in the future, discontinues creating that file,
- * then we need to change this check to a panic / assert or return an error.
- * That's because we can't be sure if the file has been created correctly.
- */
- if ((error = vnode_size(vp, (off_t*) &file_size, ctx)) != 0) {
+ error = vnode_size(vp, (off_t*) &file_size, ctx);
- printf("vnode_size (existing files) for swap files failed: %d\n", error);
+ if (error) {
+ printf("vnode_size (new file) for swap file failed: %d\n", error);
goto done;
- } else {
-
- if (file_size == 0) {
+ }
+ assert(file_size == *size);
- error = vnode_setsize(vp, *size, IO_NOZEROFILL, ctx);
-
- if (error) {
- printf("vnode_setsize for swap files failed: %d\n", error);
- goto done;
- }
- } else {
+ if (pin != NULL && *pin != FALSE) {
+ error = VNOP_IOCTL(vp, FIOPINSWAP, NULL, 0, ctx);
- *size = file_size;
+ if (error) {
+ printf("pin for swap files failed: %d, file_size = %lld\n", error, file_size);
+ /* this is not fatal, carry on with files wherever they landed */
+ *pin = FALSE;
+ error = 0;
}
}
vnode_lock_spin(vp);
SET(vp->v_flag, VSWAP);
vnode_unlock(vp);
+
+#if CONFIG_FREEZE
+ VATTR_INIT(&va);
+ VATTR_SET(&va, va_dataprotect_class, PROTECTION_CLASS_C);
+ error = VNOP_SETATTR(vp, &va, ctx);
+
+ if (error) {
+ printf("setattr PROTECTION_CLASS_C for swap file failed: %d\n", error);
+ goto done;
+ }
+#endif /* CONFIG_FREEZE */
+
done:
return error;
}
+
+int
+vm_record_file_write(vnode_t vp, uint64_t offset, char *buf, int size)
+{
+ int error = 0;
+ vfs_context_t ctx;
+
+ ctx = vfs_context_kernel();
+
+ error = vn_rdwr(UIO_WRITE, vp, (caddr_t)buf, size, offset,
+ UIO_SYSSPACE, IO_NODELOCKED, vfs_context_ucred(ctx), (int *) 0, vfs_context_proc(ctx));
+
+ return error;
+}
+
+
+
int
-vm_swapfile_io(vnode_t vp, uint64_t offset, uint64_t start, int npages, int flags)
+vm_swapfile_io(vnode_t vp, uint64_t offset, uint64_t start, int npages, int flags, void *upl_iodone)
{
int error = 0;
uint64_t io_size = npages * PAGE_SIZE_64;
#if 1
- kern_return_t kr = KERN_SUCCESS;
- upl_t upl = NULL;
- unsigned int count = 0;
- int upl_create_flags = 0, upl_control_flags = 0;
- upl_size_t upl_size = 0;
+ kern_return_t kr = KERN_SUCCESS;
+ upl_t upl = NULL;
+ unsigned int count = 0;
+ upl_control_flags_t upl_create_flags = 0;
+ int upl_control_flags = 0;
+ upl_size_t upl_size = 0;
upl_create_flags = UPL_SET_INTERNAL | UPL_SET_LITE;
- upl_control_flags = UPL_IOSYNC | UPL_PAGING_ENCRYPTED;
+
+ if (upl_iodone == NULL) {
+ upl_control_flags = UPL_IOSYNC;
+ }
+
+#if ENCRYPTED_SWAP
+ upl_control_flags |= UPL_PAGING_ENCRYPTED;
+#endif
if ((flags & SWAP_READ) == FALSE) {
upl_create_flags |= UPL_COPYOUT_FROM;
}
-
+
upl_size = io_size;
kr = vm_map_create_upl( kernel_map,
- start,
- &upl_size,
- &upl,
- NULL,
- &count,
- &upl_create_flags);
+ start,
+ &upl_size,
+ &upl,
+ NULL,
+ &count,
+ &upl_create_flags,
+ VM_KERN_MEMORY_OSFMK);
if (kr != KERN_SUCCESS || (upl_size != io_size)) {
panic("vm_map_create_upl failed with %d\n", kr);
if (flags & SWAP_READ) {
vnode_pagein(vp,
- upl,
- 0,
- offset,
- io_size,
- upl_control_flags | UPL_IGNORE_VALID_PAGE_CHECK,
- &error);
+ upl,
+ 0,
+ offset,
+ io_size,
+ upl_control_flags | UPL_IGNORE_VALID_PAGE_CHECK,
+ &error);
if (error) {
#if DEBUG
printf("vm_swapfile_io: vnode_pagein failed with %d (vp: %p, offset: 0x%llx, size:%llu)\n", error, vp, offset, io_size);
printf("vm_swapfile_io: vnode_pagein failed with %d.\n", error);
#endif /* DEBUG */
}
-
} else {
+ upl_set_iodone(upl, upl_iodone);
+
vnode_pageout(vp,
- upl,
- 0,
- offset,
- io_size,
- upl_control_flags,
- &error);
+ upl,
+ 0,
+ offset,
+ io_size,
+ upl_control_flags,
+ &error);
if (error) {
#if DEBUG
printf("vm_swapfile_io: vnode_pageout failed with %d (vp: %p, offset: 0x%llx, size:%llu)\n", error, vp, offset, io_size);
#else /* 1 */
vfs_context_t ctx;
ctx = vfs_context_kernel();
-
+
error = vn_rdwr((flags & SWAP_READ) ? UIO_READ : UIO_WRITE, vp, (caddr_t)start, io_size, offset,
- UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED | IO_UNIT | IO_NOCACHE | IO_SWAP_DISPATCH, vfs_context_ucred(ctx), (int *) 0, vfs_context_proc(ctx));
+ UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED | IO_UNIT | IO_NOCACHE | IO_SWAP_DISPATCH, vfs_context_ucred(ctx), (int *) 0, vfs_context_proc(ctx));
if (error) {
printf("vn_rdwr: Swap I/O failed with %d\n", error);
}
-#define MAX_BATCH_TO_TRIM 256
+#define MAX_BATCH_TO_TRIM 256
-u_int32_t vnode_trim_list (vnode_t vp, struct trim_list *tl)
-{
- int error = 0;
- int trim_index = 0;
- u_int32_t blocksize = 0;
- struct vnode *devvp;
- dk_extent_t *extents;
- dk_unmap_t unmap;
+#define ROUTE_ONLY 0x10 /* if corestorage is present, tell it to just pass */
+ /* the DKIOUNMAP command through w/o acting on it */
+ /* this is used by the compressed swap system to reclaim empty space */
- if ( !(vp->v_mount->mnt_ioflags & MNT_IOFLAGS_UNMAP_SUPPORTED))
- return (ENOTSUP);
- if (tl == NULL)
- return (0);
+u_int32_t
+vnode_trim_list(vnode_t vp, struct trim_list *tl, boolean_t route_only)
+{
+ int error = 0;
+ int trim_index = 0;
+ u_int32_t blocksize = 0;
+ struct vnode *devvp;
+ dk_extent_t *extents;
+ dk_unmap_t unmap;
+ _dk_cs_unmap_t cs_unmap;
+
+ if (!(vp->v_mount->mnt_ioflags & MNT_IOFLAGS_UNMAP_SUPPORTED)) {
+ return ENOTSUP;
+ }
+
+ if (tl == NULL) {
+ return 0;
+ }
/*
* Get the underlying device vnode and physical block size
extents = kalloc(sizeof(dk_extent_t) * MAX_BATCH_TO_TRIM);
- memset (&unmap, 0, sizeof(dk_unmap_t));
- unmap.extents = extents;
+ if (vp->v_mount->mnt_ioflags & MNT_IOFLAGS_CSUNMAP_SUPPORTED) {
+ memset(&cs_unmap, 0, sizeof(_dk_cs_unmap_t));
+ cs_unmap.extents = extents;
+
+ if (route_only == TRUE) {
+ cs_unmap.options = ROUTE_ONLY;
+ }
+ } else {
+ memset(&unmap, 0, sizeof(dk_unmap_t));
+ unmap.extents = extents;
+ }
while (tl) {
- daddr64_t io_blockno; /* Block number corresponding to the start of the extent */
- size_t io_bytecount; /* Number of bytes in current extent for the specified range */
- size_t trimmed;
- size_t remaining_length;
- off_t current_offset;
+ daddr64_t io_blockno; /* Block number corresponding to the start of the extent */
+ size_t io_bytecount; /* Number of bytes in current extent for the specified range */
+ size_t trimmed;
+ size_t remaining_length;
+ off_t current_offset;
current_offset = tl->tl_offset;
remaining_length = tl->tl_length;
trimmed = 0;
-
- /*
+
+ /*
* We may not get the entire range from tl_offset -> tl_offset+tl_length in a single
* extent from the blockmap call. Keep looping/going until we are sure we've hit
* the whole range or if we encounter an error.
while (trimmed < tl->tl_length) {
/*
* VNOP_BLOCKMAP will tell us the logical to physical block number mapping for the
- * specified offset. It returns blocks in contiguous chunks, so if the logical range is
+ * specified offset. It returns blocks in contiguous chunks, so if the logical range is
* broken into multiple extents, it must be called multiple times, increasing the offset
* in each call to ensure that the entire range is covered.
*/
- error = VNOP_BLOCKMAP (vp, current_offset, remaining_length,
- &io_blockno, &io_bytecount, NULL, VNODE_READ, NULL);
+ error = VNOP_BLOCKMAP(vp, current_offset, remaining_length,
+ &io_blockno, &io_bytecount, NULL, VNODE_READ | VNODE_BLOCKMAP_NO_TRACK, NULL);
if (error) {
goto trim_exit;
}
+ if (io_blockno != -1) {
+ extents[trim_index].offset = (uint64_t) io_blockno * (u_int64_t) blocksize;
+ extents[trim_index].length = io_bytecount;
- extents[trim_index].offset = (uint64_t) io_blockno * (u_int64_t) blocksize;
- extents[trim_index].length = io_bytecount;
-
- trim_index++;
-
+ trim_index++;
+ }
if (trim_index == MAX_BATCH_TO_TRIM) {
-
- unmap.extentsCount = trim_index;
- error = VNOP_IOCTL(devvp, DKIOCUNMAP, (caddr_t)&unmap, 0, vfs_context_kernel());
-
+ if (vp->v_mount->mnt_ioflags & MNT_IOFLAGS_CSUNMAP_SUPPORTED) {
+ cs_unmap.extentsCount = trim_index;
+ error = VNOP_IOCTL(devvp, _DKIOCCSUNMAP, (caddr_t)&cs_unmap, 0, vfs_context_kernel());
+ } else {
+ unmap.extentsCount = trim_index;
+ error = VNOP_IOCTL(devvp, DKIOCUNMAP, (caddr_t)&unmap, 0, vfs_context_kernel());
+ }
if (error) {
goto trim_exit;
}
tl = tl->tl_next;
}
if (trim_index) {
-
- unmap.extentsCount = trim_index;
- error = VNOP_IOCTL(devvp, DKIOCUNMAP, (caddr_t)&unmap, 0, vfs_context_kernel());
+ if (vp->v_mount->mnt_ioflags & MNT_IOFLAGS_CSUNMAP_SUPPORTED) {
+ cs_unmap.extentsCount = trim_index;
+ error = VNOP_IOCTL(devvp, _DKIOCCSUNMAP, (caddr_t)&cs_unmap, 0, vfs_context_kernel());
+ } else {
+ unmap.extentsCount = trim_index;
+ error = VNOP_IOCTL(devvp, DKIOCUNMAP, (caddr_t)&unmap, 0, vfs_context_kernel());
+ }
}
trim_exit:
kfree(extents, sizeof(dk_extent_t) * MAX_BATCH_TO_TRIM);
return error;
}
+
+#if CONFIG_FREEZE
+int
+vm_swap_vol_get_budget(vnode_t vp, uint64_t *freeze_daily_budget)
+{
+ vnode_t devvp = NULL;
+ vfs_context_t ctx = vfs_context_kernel();
+ errno_t err = 0;
+
+ devvp = vp->v_mount->mnt_devvp;
+
+ err = VNOP_IOCTL(devvp, DKIOCGETMAXSWAPWRITE, (caddr_t)freeze_daily_budget, 0, ctx);
+
+ return err;
+}
+#endif /* CONFIG_FREEZE */
projects / apple / xnu.git / blobdiff