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[BTRFS] Upgrade to 1.1
CORE-15452
This commit is contained in:
Pierre Schweitzer
parent
e8d16d0a7d
commit
eb7fbc253f
61 changed files with 22605 additions and 596 deletions
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@ -169,7 +169,7 @@ end:
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return Status;
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}
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static NTSTATUS set_symlink(PIRP Irp, file_ref* fileref, ccb* ccb, REPARSE_DATA_BUFFER* rdb, ULONG buflen, BOOL write, LIST_ENTRY* rollback) {
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static NTSTATUS set_symlink(PIRP Irp, file_ref* fileref, fcb* fcb, ccb* ccb, REPARSE_DATA_BUFFER* rdb, ULONG buflen, BOOL write, LIST_ENTRY* rollback) {
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NTSTATUS Status;
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ULONG minlen;
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ULONG tlength;
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@ -197,15 +197,15 @@ static NTSTATUS set_symlink(PIRP Irp, file_ref* fileref, ccb* ccb, REPARSE_DATA_
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TRACE("substitute name = %.*S\n", subname.Length / sizeof(WCHAR), subname.Buffer);
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}
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fileref->fcb->type = BTRFS_TYPE_SYMLINK;
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fileref->fcb->inode_item.st_mode |= __S_IFLNK;
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fileref->fcb->inode_item.generation = fileref->fcb->Vcb->superblock.generation; // so we don't confuse btrfs send on Linux
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fcb->type = BTRFS_TYPE_SYMLINK;
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fcb->inode_item.st_mode |= __S_IFLNK;
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fcb->inode_item.generation = fcb->Vcb->superblock.generation; // so we don't confuse btrfs send on Linux
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if (fileref->dc)
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fileref->dc->type = fileref->fcb->type;
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if (fileref && fileref->dc)
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fileref->dc->type = fcb->type;
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if (write) {
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Status = truncate_file(fileref->fcb, 0, Irp, rollback);
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Status = truncate_file(fcb, 0, Irp, rollback);
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if (!NT_SUCCESS(Status)) {
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ERR("truncate_file returned %08x\n", Status);
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return Status;
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@ -238,7 +238,7 @@ static NTSTATUS set_symlink(PIRP Irp, file_ref* fileref, ccb* ccb, REPARSE_DATA_
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offset.QuadPart = 0;
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tlength = target.Length;
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Status = write_file2(fileref->fcb->Vcb, Irp, offset, target.Buffer, &tlength, FALSE, TRUE,
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Status = write_file2(fcb->Vcb, Irp, offset, target.Buffer, &tlength, FALSE, TRUE,
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TRUE, FALSE, FALSE, rollback);
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ExFreePool(target.Buffer);
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} else
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@ -247,26 +247,121 @@ static NTSTATUS set_symlink(PIRP Irp, file_ref* fileref, ccb* ccb, REPARSE_DATA_
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KeQuerySystemTime(&time);
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win_time_to_unix(time, &now);
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fileref->fcb->inode_item.transid = fileref->fcb->Vcb->superblock.generation;
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fileref->fcb->inode_item.sequence++;
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fcb->inode_item.transid = fcb->Vcb->superblock.generation;
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fcb->inode_item.sequence++;
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if (!ccb->user_set_change_time)
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fileref->fcb->inode_item.st_ctime = now;
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if (!ccb || !ccb->user_set_change_time)
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fcb->inode_item.st_ctime = now;
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if (!ccb->user_set_write_time)
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fileref->fcb->inode_item.st_mtime = now;
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if (!ccb || !ccb->user_set_write_time)
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fcb->inode_item.st_mtime = now;
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fileref->fcb->subvol->root_item.ctransid = fileref->fcb->Vcb->superblock.generation;
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fileref->fcb->subvol->root_item.ctime = now;
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fcb->subvol->root_item.ctransid = fcb->Vcb->superblock.generation;
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fcb->subvol->root_item.ctime = now;
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fileref->fcb->inode_item_changed = TRUE;
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mark_fcb_dirty(fileref->fcb);
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fcb->inode_item_changed = TRUE;
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mark_fcb_dirty(fcb);
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mark_fileref_dirty(fileref);
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if (fileref)
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mark_fileref_dirty(fileref);
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return Status;
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}
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NTSTATUS set_reparse_point2(fcb* fcb, REPARSE_DATA_BUFFER* rdb, ULONG buflen, ccb* ccb, file_ref* fileref, PIRP Irp, LIST_ENTRY* rollback) {
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NTSTATUS Status;
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ULONG tag;
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if (fcb->type == BTRFS_TYPE_SYMLINK) {
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WARN("tried to set a reparse point on an existing symlink\n");
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return STATUS_INVALID_PARAMETER;
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}
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// FIXME - fail if we already have the attribute FILE_ATTRIBUTE_REPARSE_POINT
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// FIXME - die if not file or directory
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if (buflen < sizeof(ULONG)) {
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WARN("buffer was not long enough to hold tag\n");
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return STATUS_INVALID_BUFFER_SIZE;
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}
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Status = FsRtlValidateReparsePointBuffer(buflen, rdb);
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if (!NT_SUCCESS(Status)) {
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ERR("FsRtlValidateReparsePointBuffer returned %08x\n", Status);
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return Status;
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}
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RtlCopyMemory(&tag, rdb, sizeof(ULONG));
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if (fcb->type == BTRFS_TYPE_FILE &&
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((tag == IO_REPARSE_TAG_SYMLINK && rdb->SymbolicLinkReparseBuffer.Flags & SYMLINK_FLAG_RELATIVE) || tag == IO_REPARSE_TAG_LXSS_SYMLINK)) {
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Status = set_symlink(Irp, fileref, fcb, ccb, rdb, buflen, tag == IO_REPARSE_TAG_SYMLINK, rollback);
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fcb->atts |= FILE_ATTRIBUTE_REPARSE_POINT;
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} else {
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LARGE_INTEGER offset, time;
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BTRFS_TIME now;
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if (fcb->type == BTRFS_TYPE_DIRECTORY || fcb->type == BTRFS_TYPE_CHARDEV || fcb->type == BTRFS_TYPE_BLOCKDEV) { // store as xattr
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ANSI_STRING buf;
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buf.Buffer = ExAllocatePoolWithTag(PagedPool, buflen, ALLOC_TAG);
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if (!buf.Buffer) {
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ERR("out of memory\n");
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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buf.Length = buf.MaximumLength = (UINT16)buflen;
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if (fcb->reparse_xattr.Buffer)
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ExFreePool(fcb->reparse_xattr.Buffer);
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fcb->reparse_xattr = buf;
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RtlCopyMemory(buf.Buffer, rdb, buflen);
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fcb->reparse_xattr_changed = TRUE;
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Status = STATUS_SUCCESS;
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} else { // otherwise, store as file data
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Status = truncate_file(fcb, 0, Irp, rollback);
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if (!NT_SUCCESS(Status)) {
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ERR("truncate_file returned %08x\n", Status);
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return Status;
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}
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offset.QuadPart = 0;
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Status = write_file2(fcb->Vcb, Irp, offset, rdb, &buflen, FALSE, TRUE, TRUE, FALSE, FALSE, rollback);
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if (!NT_SUCCESS(Status)) {
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ERR("write_file2 returned %08x\n", Status);
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return Status;
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}
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}
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KeQuerySystemTime(&time);
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win_time_to_unix(time, &now);
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fcb->inode_item.transid = fcb->Vcb->superblock.generation;
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fcb->inode_item.sequence++;
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if (!ccb || !ccb->user_set_change_time)
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fcb->inode_item.st_ctime = now;
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if (!ccb || !ccb->user_set_write_time)
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fcb->inode_item.st_mtime = now;
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fcb->atts |= FILE_ATTRIBUTE_REPARSE_POINT;
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fcb->atts_changed = TRUE;
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fcb->subvol->root_item.ctransid = fcb->Vcb->superblock.generation;
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fcb->subvol->root_item.ctime = now;
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fcb->inode_item_changed = TRUE;
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mark_fcb_dirty(fcb);
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}
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return STATUS_SUCCESS;
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}
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NTSTATUS set_reparse_point(PDEVICE_OBJECT DeviceObject, PIRP Irp) {
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PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
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PFILE_OBJECT FileObject = IrpSp->FileObject;
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@ -277,7 +372,6 @@ NTSTATUS set_reparse_point(PDEVICE_OBJECT DeviceObject, PIRP Irp) {
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fcb* fcb;
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ccb* ccb;
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file_ref* fileref;
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ULONG tag;
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LIST_ENTRY rollback;
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TRACE("(%p, %p)\n", DeviceObject, Irp);
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@ -323,96 +417,12 @@ NTSTATUS set_reparse_point(PDEVICE_OBJECT DeviceObject, PIRP Irp) {
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ExAcquireResourceSharedLite(&fcb->Vcb->tree_lock, TRUE);
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ExAcquireResourceExclusiveLite(fcb->Header.Resource, TRUE);
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if (fcb->type == BTRFS_TYPE_SYMLINK) {
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WARN("tried to set a reparse point on an existing symlink\n");
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Status = STATUS_INVALID_PARAMETER;
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goto end;
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}
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// FIXME - fail if we already have the attribute FILE_ATTRIBUTE_REPARSE_POINT
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// FIXME - die if not file or directory
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if (buflen < sizeof(ULONG)) {
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WARN("buffer was not long enough to hold tag\n");
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Status = STATUS_INVALID_BUFFER_SIZE;
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goto end;
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}
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Status = FsRtlValidateReparsePointBuffer(buflen, rdb);
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Status = set_reparse_point2(fcb, rdb, buflen, ccb, fileref, Irp, &rollback);
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if (!NT_SUCCESS(Status)) {
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ERR("FsRtlValidateReparsePointBuffer returned %08x\n", Status);
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ERR("set_reparse_point2 returned %08x\n", Status);
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goto end;
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}
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RtlCopyMemory(&tag, buffer, sizeof(ULONG));
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if (fcb->type == BTRFS_TYPE_FILE &&
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((tag == IO_REPARSE_TAG_SYMLINK && rdb->SymbolicLinkReparseBuffer.Flags & SYMLINK_FLAG_RELATIVE) || tag == IO_REPARSE_TAG_LXSS_SYMLINK)) {
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Status = set_symlink(Irp, fileref, ccb, rdb, buflen, tag == IO_REPARSE_TAG_SYMLINK, &rollback);
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fcb->atts |= FILE_ATTRIBUTE_REPARSE_POINT;
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} else {
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LARGE_INTEGER offset, time;
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BTRFS_TIME now;
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if (fcb->type == BTRFS_TYPE_DIRECTORY) { // for directories, store as xattr
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ANSI_STRING buf;
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buf.Buffer = ExAllocatePoolWithTag(PagedPool, buflen, ALLOC_TAG);
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if (!buf.Buffer) {
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ERR("out of memory\n");
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto end;
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}
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buf.Length = buf.MaximumLength = (UINT16)buflen;
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if (fcb->reparse_xattr.Buffer)
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ExFreePool(fcb->reparse_xattr.Buffer);
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fcb->reparse_xattr = buf;
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RtlCopyMemory(buf.Buffer, buffer, buflen);
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fcb->reparse_xattr_changed = TRUE;
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Status = STATUS_SUCCESS;
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} else { // otherwise, store as file data
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Status = truncate_file(fcb, 0, Irp, &rollback);
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if (!NT_SUCCESS(Status)) {
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ERR("truncate_file returned %08x\n", Status);
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goto end;
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}
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offset.QuadPart = 0;
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Status = write_file2(fcb->Vcb, Irp, offset, buffer, &buflen, FALSE, TRUE, TRUE, FALSE, FALSE, &rollback);
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if (!NT_SUCCESS(Status)) {
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ERR("write_file2 returned %08x\n", Status);
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goto end;
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}
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}
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KeQuerySystemTime(&time);
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win_time_to_unix(time, &now);
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fcb->inode_item.transid = fcb->Vcb->superblock.generation;
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fcb->inode_item.sequence++;
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if (!ccb->user_set_change_time)
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fcb->inode_item.st_ctime = now;
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if (!ccb->user_set_write_time)
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fcb->inode_item.st_mtime = now;
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fcb->atts |= FILE_ATTRIBUTE_REPARSE_POINT;
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fcb->atts_changed = TRUE;
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fcb->subvol->root_item.ctransid = fcb->Vcb->superblock.generation;
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fcb->subvol->root_item.ctime = now;
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fcb->inode_item_changed = TRUE;
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mark_fcb_dirty(fcb);
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}
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send_notification_fcb(fileref, FILE_NOTIFY_CHANGE_LAST_WRITE | FILE_NOTIFY_CHANGE_ATTRIBUTES, FILE_ACTION_MODIFIED, NULL);
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end:
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