xrootd
XrdCksXAttr.hh
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1 #ifndef __XRDCKSXATTR_HH__
2 #define __XRDCKSXATTR_HH__
3 /******************************************************************************/
4 /* */
5 /* X r d C k s X A t t r . h h */
6 /* */
7 /* (c) 2011 by the Board of Trustees of the Leland Stanford, Jr., University */
8 /* All Rights Reserved */
9 /* Produced by Andrew Hanushevsky for Stanford University under contract */
10 /* DE-AC02-76-SFO0515 with the Department of Energy */
11 /* */
12 /* This file is part of the XRootD software suite. */
13 /* */
14 /* XRootD is free software: you can redistribute it and/or modify it under */
15 /* the terms of the GNU Lesser General Public License as published by the */
16 /* Free Software Foundation, either version 3 of the License, or (at your */
17 /* option) any later version. */
18 /* */
19 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
20 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
21 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
22 /* License for more details. */
23 /* */
24 /* You should have received a copy of the GNU Lesser General Public License */
25 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
26 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
27 /* */
28 /* The copyright holder's institutional names and contributor's names may not */
29 /* be used to endorse or promote products derived from this software without */
30 /* specific prior written permission of the institution or contributor. */
31 /******************************************************************************/
32 
33 #include <sys/types.h>
34 #include <inttypes.h>
35 #include <netinet/in.h>
36 #include <sys/types.h>
37 
38 #include "XrdCks/XrdCksData.hh"
39 #include "XrdSys/XrdSysPlatform.hh"
40 
41 /* XrdCksXAttr encapsulates the extended attributes needed to save a checksum.
42 */
43 
44 class XrdCksXAttr
45 {
46 public:
47 
48 XrdCksData Cks; // Check sum information
49 
50 /* postGet() will put fmTime and csTime in host byte order (see preSet()).
51 */
52  int postGet(int Result)
53  {if (Result > 0)
54  {Cks.fmTime = ntohll(Cks.fmTime);
55  Cks.csTime = ntohl (Cks.csTime);
56  }
57  return Result;
58  }
59 
60 /* preSet() will put fmTime and csTime in network byte order to allow the
61  attribute to be copied to different architectures and still work.
62 */
63  XrdCksXAttr *preSet(XrdCksXAttr &tmp)
64  {memcpy(&tmp.Cks, &Cks, sizeof(Cks));
65  tmp.Cks.fmTime = htonll(Cks.fmTime);
66  tmp.Cks.csTime = htonl (Cks.csTime);
67  return &tmp;
68  }
69 
70 /* Name() returns the extended attribute name for this object.
71 */
72  const char *Name() {if (!(*VarName)) //01234567
73  {strcpy(VarName, "XrdCks.");
74  strcpy(VarName+7, Cks.Name);
75  }
76  return VarName;
77  }
78 
79 /* sizeGet() and sizeSet() return the actual size of the object is used.
80 */
81  int sizeGet() {return sizeof(Cks);}
82  int sizeSet() {return sizeof(Cks);}
83 
84  XrdCksXAttr() {*VarName = 0;}
85  ~XrdCksXAttr() {}
86 
87 private:
88 
89 char VarName[XrdCksData::NameSize+8];
90 };
91 #endif
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