CIFS: Add set_file_info support for SMB2

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

fs/cifs/smb2inode.c

@@ -86,6 +86,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
 		tmprc = SMB2_set_eof(xid, tcon, persistent_fid, volatile_fid,
 				     current->tgid, (__le64 *)data);
 		break;
+	case SMB2_OP_SET_INFO:
+		tmprc = SMB2_set_info(xid, tcon, persistent_fid, volatile_fid,
+				      (FILE_BASIC_INFO *)data);
+		break;
 	default:
 		cERROR(1, "Invalid command");
 		break;
@@ -232,3 +236,21 @@ smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
 				  FILE_WRITE_DATA, FILE_OPEN, 0, 0, &eof,
 				  SMB2_OP_SET_EOF);
 }
+
+int
+smb2_set_file_info(struct inode *inode, const char *full_path,
+		   FILE_BASIC_INFO *buf, const unsigned int xid)
+{
+	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct tcon_link *tlink;
+	int rc;
+
+	tlink = cifs_sb_tlink(cifs_sb);
+	if (IS_ERR(tlink))
+		return PTR_ERR(tlink);
+	rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path,
+				FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, 0, buf,
+				SMB2_OP_SET_INFO);
+	cifs_put_tlink(tlink);
+	return rc;
+}

fs/cifs/smb2ops.c

@@ -457,6 +457,7 @@ struct smb_version_operations smb21_operations = {
 	.query_file_info = smb2_query_file_info,
 	.set_path_size = smb2_set_path_size,
 	.set_file_size = smb2_set_file_size,
+	.set_file_info = smb2_set_file_info,
 	.build_path_to_root = smb2_build_path_to_root,
 	.mkdir = smb2_mkdir,
 	.mkdir_setinfo = smb2_mkdir_setinfo,

fs/cifs/smb2pdu.c

@@ -1760,3 +1760,14 @@ SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
 	return send_set_info(xid, tcon, persistent_fid, volatile_fid, pid,
 			     FILE_END_OF_FILE_INFORMATION, 1, &data, &size);
 }
+
+int
+SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon,
+	      u64 persistent_fid, u64 volatile_fid, FILE_BASIC_INFO *buf)
+{
+	unsigned int size;
+	size = sizeof(FILE_BASIC_INFO);
+	return send_set_info(xid, tcon, persistent_fid, volatile_fid,
+			     current->tgid, FILE_BASIC_INFORMATION, 1,
+			     (void **)&buf, &size);
+}

fs/cifs/smb2proto.h

@@ -59,6 +59,8 @@ extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
 			      const char *full_path, __u64 size,
 			      struct cifs_sb_info *cifs_sb, bool set_alloc);
+extern int smb2_set_file_info(struct inode *inode, const char *full_path,
+			      FILE_BASIC_INFO *buf, const unsigned int xid);
 extern int smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon,
 		      const char *name, struct cifs_sb_info *cifs_sb);
 extern void smb2_mkdir_setinfo(struct inode *inode, const char *full_path,
@@ -124,5 +126,8 @@ extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
 extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
 			u64 persistent_fid, u64 volatile_fid, u32 pid,
 			__le64 *eof);
+extern int SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon,
+			 u64 persistent_fid, u64 volatile_fid,
+			 FILE_BASIC_INFO *buf);
 
 #endif			/* _SMB2PROTO_H */