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Commit c839ff24 authored by Pavel Shilovsky's avatar Pavel Shilovsky Committed by Steve French
Browse files

CIFS: Add SMB2 support for set_file_size 



Signed-off-by: default avatarPavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent d1433418

fs/cifs/smb2glob.h

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ 
#define SMB2_OP_RENAME 6

#define SMB2_OP_DELETE 7

#define SMB2_OP_HARDLINK 8

#define SMB2_OP_SET_EOF 9



/* Used when constructing chained read requests. */

#define CHAINED_REQUEST 1

fs/cifs/smb2inode.c

+15 −0
Original line number Diff line number Diff line
@@ -82,6 +82,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon, 
		tmprc = SMB2_set_hardlink(xid, tcon, persistent_fid,

					  volatile_fid, (__le16 *)data);

		break;

	case SMB2_OP_SET_EOF:

		tmprc = SMB2_set_eof(xid, tcon, persistent_fid, volatile_fid,

				     current->tgid, (__le64 *)data);

		break;

	default:

		cERROR(1, "Invalid command");

		break;
@@ -217,3 +221,14 @@ smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, 
	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,

				  FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);

}



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)

{

	__le64 eof = cpu_to_le64(size);

	return smb2_open_op_close(xid, tcon, cifs_sb, full_path,

				  FILE_WRITE_DATA, FILE_OPEN, 0, 0, &eof,

				  SMB2_OP_SET_EOF);

}

fs/cifs/smb2ops.c

+11 −0
Original line number Diff line number Diff line
@@ -415,6 +415,15 @@ smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile, 
	return SMB2_write(xid, parms, written, iov, nr_segs);

}



static int

smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,

		   struct cifsFileInfo *cfile, __u64 size, bool set_alloc)

{

	__le64 eof = cpu_to_le64(size);

	return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,

			    cfile->fid.volatile_fid, cfile->pid, &eof);

}



struct smb_version_operations smb21_operations = {

	.setup_request = smb2_setup_request,

	.setup_async_request = smb2_setup_async_request,
@@ -446,6 +455,8 @@ struct smb_version_operations smb21_operations = { 
	.query_path_info = smb2_query_path_info,

	.get_srv_inum = smb2_get_srv_inum,

	.query_file_info = smb2_query_file_info,

	.set_path_size = smb2_set_path_size,

	.set_file_size = smb2_set_file_size,

	.build_path_to_root = smb2_build_path_to_root,

	.mkdir = smb2_mkdir,

	.mkdir_setinfo = smb2_mkdir_setinfo,

fs/cifs/smb2pdu.c

+23 −3
Original line number Diff line number Diff line
@@ -1605,7 +1605,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, 


static int

send_set_info(const unsigned int xid, struct cifs_tcon *tcon,

	       u64 persistent_fid, u64 volatile_fid, int info_class,

	       u64 persistent_fid, u64 volatile_fid, u32 pid, int info_class,

	       unsigned int num, void **data, unsigned int *size)

{

	struct smb2_set_info_req *req;
@@ -1635,6 +1635,8 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, 
		return rc;

	}



	req->hdr.ProcessId = cpu_to_le32(pid);



	req->InfoType = SMB2_O_INFO_FILE;

	req->FileInfoClass = info_class;

	req->PersistentFileId = persistent_fid;
@@ -1705,7 +1707,8 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon, 
	size[1] = len + 2 /* null */;



	rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,

			   FILE_RENAME_INFORMATION, 2, data, size);

			   current->tgid, FILE_RENAME_INFORMATION, 2, data,

			   size);

	kfree(data);

	return rc;

}
@@ -1736,7 +1739,24 @@ SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon, 
	size[1] = len + 2 /* null */;



	rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,

			   FILE_LINK_INFORMATION, 2, data, size);

			   current->tgid, FILE_LINK_INFORMATION, 2, data, size);

	kfree(data);

	return rc;

}



int

SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,

	     u64 volatile_fid, u32 pid, __le64 *eof)

{

	struct smb2_file_eof_info info;

	void *data;

	unsigned int size;



	info.EndOfFile = *eof;



	data = &info;

	size = sizeof(struct smb2_file_eof_info);



	return send_set_info(xid, tcon, persistent_fid, volatile_fid, pid,

			     FILE_END_OF_FILE_INFORMATION, 1, &data, &size);

}

fs/cifs/smb2pdu.h

+4 −0
Original line number Diff line number Diff line
@@ -690,4 +690,8 @@ struct smb2_file_all_info { /* data block encoding of response to level 18 */ 
	char   FileName[1];

} __packed; /* level 18 Query */



struct smb2_file_eof_info { /* encoding of request for level 10 */

	__le64 EndOfFile; /* new end of file value */

} __packed; /* level 20 Set */



#endif				/* _SMB2PDU_H */