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, 0, NULL);
+ error = VNOP_BLOCKMAP(ref->vp, offset, filechunk, &blkno,
+ &filechunk, NULL, VNODE_WRITE, NULL);
if (error) break;
fileblk = blkno * ref->blksize;
}
{
pin.cp_extent.offset = fileblk;
pin.cp_extent.length = filechunk;
- pin.cp_flags = _DKIOCSPINDISCARDDATA;
+ pin.cp_flags = _DKIOCCSPINFORHIBERNATION;
error = do_ioctl(p1, p2, theIoctl, (caddr_t)&pin);
if (error && (ENOTTY != error))
{
return (error);
}
-int
-kern_write_file(struct kern_direct_file_io_ref_t * ref, off_t offset, caddr_t addr, vm_size_t len);
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,
int isssd = 0;
uint32_t flags = 0;
uint32_t blksize;
- off_t maxiocount, count;
+ off_t maxiocount, count, segcount;
boolean_t locked = FALSE;
int (*do_ioctl)(void * p1, void * p2, u_long theIoctl, caddr_t result);
p = kernproc;
ref->ctx = vfs_context_create(vfs_context_current());
- if ((error = vnode_open(name, (O_CREAT | FWRITE), (0), 0, &ref->vp, ref->ctx)))
+ if ((error = vnode_open(name, (create_file) ? (O_CREAT | FWRITE) : FWRITE,
+ (0), 0, &ref->vp, ref->ctx)))
goto out;
+ 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)))
+ if ((error = kern_write_file(ref, write_file_offset, write_file_addr, write_file_len, 0)))
goto out;
}
VATTR_WANTED(&va, va_rdev);
VATTR_WANTED(&va, va_fsid);
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))
kprintf("vp va_rdev major %d minor %d\n", major(va.va_rdev), minor(va.va_rdev));
kprintf("vp va_fsid major %d minor %d\n", major(va.va_fsid), minor(va.va_fsid));
- kprintf("vp size %qd\n", va.va_data_size);
+ kprintf("vp size %qd alloc %qd\n", va.va_data_size, va.va_data_alloc);
if (ref->vp->v_type == VREG)
{
- /* Don't dump files with links. */
- if (va.va_nlink != 1)
- goto out;
+ /* Don't dump files with links. */
+ if (va.va_nlink != 1)
+ goto out;
device = va.va_fsid;
ref->filelength = va.va_data_size;
p2 = p;
do_ioctl = &file_ioctl;
- if (set_file_size)
- {
- off_t bytesallocated = 0;
- u_int32_t alloc_flags = PREALLOCATE | ALLOCATEFROMPEOF | ALLOCATEALL;
- error = VNOP_ALLOCATE(ref->vp, set_file_size, alloc_flags,
- &bytesallocated, 0 /*fst_offset*/,
- ref->ctx);
- // F_SETSIZE:
- if (!error) error = vnode_setsize(ref->vp, set_file_size, IO_NOZEROFILL, ref->ctx);
- kprintf("vnode_setsize(%d) %qd\n", error, set_file_size);
- ref->filelength = bytesallocated;
- }
+ if (set_file_size)
+ {
+ 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))
{
filechunk = 1*1024*1024*1024;
daddr64_t blkno;
- error = VNOP_BLOCKMAP(ref->vp, f_offset, filechunk, &blkno, &filechunk, NULL, 0, NULL);
+ error = VNOP_BLOCKMAP(ref->vp, f_offset, filechunk, &blkno,
+ &filechunk, NULL, VNODE_WRITE, NULL);
if (error)
goto out;
error = ENOTSUP;
goto out;
}
+#if HIBFRAGMENT
+ 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);
+#endif
physoffset += getphysreq.length;
}
f_offset += filechunk;
// get partition base
- error = do_ioctl(p1, p2, DKIOCGETBASE, (caddr_t) partitionbase_result);
- if (error)
- goto out;
+ if (partitionbase_result)
+ {
+ error = do_ioctl(p1, p2, DKIOCGETBASE, (caddr_t) partitionbase_result);
+ if (error)
+ goto out;
+ }
// get block size & constraints
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 = 0;
+ 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 = 0;
+ count = segcount = 0;
+ count *= segcount;
if (count && (count < maxiocount))
maxiocount = count;
*partition_device_result = device;
if (image_device_result)
*image_device_result = target;
- if (flags)
+ if (oflags)
*oflags = flags;
out:
if (error && ref)
{
+ if (ref->pinned)
+ {
+ _dk_cs_pin_t pin;
+ bzero(&pin, sizeof(pin));
+
+ pin.cp_flags = _DKIOCCSPINDISCARDBLACKLIST;
+ p1 = &device;
+ (void) do_ioctl(p1, p2, _DKIOCCSUNPINEXTENT, (caddr_t)&pin);
+ }
if (ref->vp)
{
vnode_close(ref->vp, FWRITE, ref->ctx);
}
int
-kern_write_file(struct kern_direct_file_io_ref_t * ref, off_t offset, caddr_t addr, vm_size_t len)
+kern_write_file(struct kern_direct_file_io_ref_t * ref, off_t offset, caddr_t addr, vm_size_t len, int ioflag)
{
return (vn_rdwr(UIO_WRITE, ref->vp,
addr, len, offset,
- UIO_SYSSPACE, IO_SYNC|IO_NODELOCKED|IO_UNIT,
+ UIO_SYSSPACE, ioflag|IO_SYNC|IO_NODELOCKED|IO_UNIT,
vfs_context_ucred(ref->ctx), (int *) 0,
vfs_context_proc(ref->ctx)));
}
off_t discard_offset, off_t discard_end)
{
int error;
+ _dk_cs_pin_t pin;
kprintf("kern_close_file_for_direct_io\n");
if (!ref) return;
do_ioctl = &device_ioctl;
}
(void) do_ioctl(p1, p2, DKIOCUNLOCKPHYSICALEXTENTS, NULL);
-
- if (addr && write_length)
+
+ if (ref->pinned)
{
- (void) kern_write_file(ref, write_offset, addr, write_length);
+ bzero(&pin, sizeof(pin));
+ pin.cp_flags = _DKIOCCSPINDISCARDBLACKLIST;
+ (void) do_ioctl(p1, p2, _DKIOCCSUNPINEXTENT, (caddr_t)&pin);
}
+
+
if (discard_offset && discard_end && !ref->pinned)
{
(void) kern_ioctl_file_extents(ref, DKIOCUNMAP, discard_offset, discard_end);
}
+ if (addr && write_length)
+ {
+ (void) kern_write_file(ref, write_offset, addr, write_length, 0);
+ }
error = vnode_close(ref->vp, FWRITE, ref->ctx);
ref->ctx = NULL;
kfree(ref, sizeof(struct kern_direct_file_io_ref_t));
}
-
projects / apple / xnu.git / blobdiff