cifsd: add support for FSCTL_DUPLICATE_EXTENTS_TO_FILE
Add support for FSCTL_DUPLICATE_EXTENTS_TO_FILE in smb2 ioctl.
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
diff --git a/fs/cifsd/smb2pdu.c b/fs/cifsd/smb2pdu.c
index 3fd266a9..e5d3a579 100644
--- a/fs/cifsd/smb2pdu.c
+++ b/fs/cifsd/smb2pdu.c
@@ -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);
diff --git a/fs/cifsd/smb2pdu.h b/fs/cifsd/smb2pdu.h
index c5c3261..1a8da21 100644
--- a/fs/cifsd/smb2pdu.h
+++ b/fs/cifsd/smb2pdu.h
@@ -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 */
diff --git a/fs/cifsd/smbfsctl.h b/fs/cifsd/smbfsctl.h
index 908c4e6..b98418a 100644
--- a/fs/cifsd/smbfsctl.h
+++ b/fs/cifsd/smbfsctl.h
@@ -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 */
diff --git a/fs/cifsd/vfs.c b/fs/cifsd/vfs.c
index 29f31db..cdbb844 100644
--- a/fs/cifsd/vfs.c
+++ b/fs/cifsd/vfs.c
@@ -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);
diff --git a/fs/cifsd/vfs.h b/fs/cifsd/vfs.h
index 0163be4..2d19e2b 100644
--- a/fs/cifsd/vfs.h
+++ b/fs/cifsd/vfs.h
@@ -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);
