Commit eb817368 authored by Namjae Jeon's avatar Namjae Jeon
Browse files

cifsd: add support for FSCTL_DUPLICATE_EXTENTS_TO_FILE 



Add support for FSCTL_DUPLICATE_EXTENTS_TO_FILE in smb2 ioctl.

Reviewed-by: default avatarHyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 8602c3e2

fs/cifsd/smb2pdu.c

+51 −1
Original line number Diff line number Diff line
@@ -4622,7 +4622,8 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, 
					       FILE_PERSISTENT_ACLS |

					       FILE_UNICODE_ON_DISK |

					       FILE_CASE_PRESERVED_NAMES |

					       FILE_CASE_SENSITIVE_SEARCH);

					       FILE_CASE_SENSITIVE_SEARCH |

					       FILE_SUPPORTS_BLOCK_REFCOUNTING);



		info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
@@ -7330,6 +7331,55 @@ int smb2_ioctl(struct ksmbd_work *work) 
		nbytes = sizeof(struct reparse_data_buffer);

		break;

	}

	case FSCTL_DUPLICATE_EXTENTS_TO_FILE:

	{

		struct ksmbd_file *fp_in, *fp_out = NULL;

		struct duplicate_extents_to_file *dup_ext;

		loff_t src_off, dst_off, length, cloned;



		dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];



		fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,

				dup_ext->PersistentFileHandle);

		if (!fp_in) {

			ksmbd_err("not found file handle in duplicate extent to file\n");

			ret = -ENOENT;

			goto out;

		}



		fp_out = ksmbd_lookup_fd_fast(work, id);

		if (!fp_out) {

			ksmbd_err("not found fp\n");

			ret = -ENOENT;

			goto dup_ext_out;

		}



		src_off = le64_to_cpu(dup_ext->SourceFileOffset);

		dst_off = le64_to_cpu(dup_ext->TargetFileOffset);

		length = le64_to_cpu(dup_ext->ByteCount);

		cloned = vfs_clone_file_range(fp_in->filp, src_off, fp_out->filp,

				dst_off, length, 0);

		if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {

			ret = -EOPNOTSUPP;

			goto dup_ext_out;

		} else if (cloned != length) {

			cloned = ksmbd_vfs_copy_file_range(fp_in->filp, src_off,

					fp_out->filp, dst_off, length);

			if (cloned != length) {

				if (cloned < 0)

					ret = cloned;

				else

					ret = -EINVAL;

			}

		}



dup_ext_out:

		ksmbd_fd_put(work, fp_in);

		ksmbd_fd_put(work, fp_out);

		if (ret < 0)

			goto out;

		break;

	}

	default:

		ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",

				cnt_code);

fs/cifsd/smb2pdu.h

+8 −0
Original line number Diff line number Diff line
@@ -851,6 +851,14 @@ struct smb2_write_rsp { 


#define SMB2_0_IOCTL_IS_FSCTL 0x00000001



struct duplicate_extents_to_file {

	__u64 PersistentFileHandle; /* source file handle, opaque endianness */

	__u64 VolatileFileHandle;

	__le64 SourceFileOffset;

	__le64 TargetFileOffset;

	__le64 ByteCount;  /* Bytes to be copied */

} __packed;



struct smb2_ioctl_req {

	struct smb2_hdr hdr;

	__le16 StructureSize; /* Must be 57 */

fs/cifsd/smbfsctl.h

+1 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ 
#define FSCTL_SET_SHORT_NAME_BEHAVIOR 0x000901B4 /* BB add struct */

#define FSCTL_QUERY_ALLOCATED_RANGES 0x000940CF /* BB add struct */

#define FSCTL_SET_DEFECT_MANAGEMENT  0x00098134 /* BB add struct */

#define FSCTL_DUPLICATE_EXTENTS_TO_FILE 0x00098344

#define FSCTL_SIS_LINK_FILES         0x0009C104

#define FSCTL_PIPE_PEEK              0x0011400C /* BB add struct */

#define FSCTL_PIPE_TRANSCEIVE        0x0011C017 /* BB add struct */

fs/cifsd/vfs.c

+1 −1
Original line number Diff line number Diff line
@@ -1789,7 +1789,7 @@ int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name, 
	return 0;

}



static int ksmbd_vfs_copy_file_range(struct file *file_in, loff_t pos_in,

int ksmbd_vfs_copy_file_range(struct file *file_in, loff_t pos_in,

		struct file *file_out, loff_t pos_out, size_t len)

{

	struct inode *inode_in = file_inode(file_in);

fs/cifsd/vfs.h

+2 −1
Original line number Diff line number Diff line
@@ -218,7 +218,8 @@ int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work, 
		struct srv_copychunk *chunks, unsigned int chunk_count,

		unsigned int *chunk_count_written,

		unsigned int *chunk_size_written, loff_t  *total_size_written);



int ksmbd_vfs_copy_file_range(struct file *file_in, loff_t pos_in,

		struct file *file_out, loff_t pos_out, size_t len);

ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list);

ssize_t ksmbd_vfs_getxattr(struct dentry *dentry, char *xattr_name,

		char **xattr_buf);