XrdPosixDir Class Reference

#include <XrdPosixDir.hh>

Inheritance diagram for XrdPosixDir:

Collaboration diagram for XrdPosixDir:

Public Member Functions
	XrdPosixDir (const char *path)
	~XrdPosixDir ()
long	getEntries ()
long	getOffset ()
dirent64 *	nextEntry (dirent64 *dp=0)
DIR *	Open ()
void	rewind ()
void	setOffset (long offset)
int	StatRet (struct stat *buf)
int	Status ()
bool	Unread ()
bool	Who (XrdPosixDir **dirP)
virtual bool	Who (XrdPosixFile **fileP)
Public Member Functions inherited from XrdPosixObject
	XrdPosixObject ()
virtual	~XrdPosixObject ()
bool	AssignFD (bool isStream=false)
int	FDNum ()
XrdOucECMsg *	getECMsg ()
void	Lock (bool wr=true)
void	Ref ()
int	Refs ()
void	UnLock ()
void	unRef ()

Static Public Member Functions
static int	dirNo (DIR *dirP)
Static Public Member Functions inherited from XrdPosixObject
static bool	CanStream ()
static XrdPosixDir *	Dir (int fildes, bool glk=false)
static XrdPosixFile *	File (int fildes, bool glk=false)
static int	Init (int numfd)
static void	Release (XrdPosixObject *oP, bool needlk=true)
static XrdPosixDir *	ReleaseDir (int fildes)
static XrdPosixFile *	ReleaseFile (int fildes)
static void	Shutdown ()
static bool	Valid (int fd)

Static Public Attributes
static const size_t	maxDlen = 256

Additional Inherited Members
Public Attributes inherited from XrdPosixObject
XrdOucECMsg	ecMsg
Protected Attributes inherited from XrdPosixObject
int	fdNum
XrdSysRWLock	objMutex
int	refCnt
XrdSysRecMutex	updMutex

Detailed Description

Definition at line 51 of file XrdPosixDir.hh.

Constructor & Destructor Documentation

XrdPosixDir()

XrdPosixDir::XrdPosixDir ( const char * path )

inline

Definition at line 54 of file XrdPosixDir.hh.

                              : DAdmin(path,ecMsg), myDirVec(0), myDirEnt(0),
                                myBuf(nullptr), nxtEnt(0), numEnt(0), eNum(0)
                              {}

References XrdPosixObject::ecMsg.

Referenced by Who().

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~XrdPosixDir()

XrdPosixDir::~XrdPosixDir ( )

inline

Definition at line 59 of file XrdPosixDir.hh.

                                 {delete myDirVec;
                                  if (myDirEnt) free(myDirEnt);
                                 }

Member Function Documentation

dirNo()

static int XrdPosixDir::dirNo ( DIR * dirP )

inlinestatic

Definition at line 63 of file XrdPosixDir.hh.

{return *(int *)dirP;}

Referenced by XrdPosixXrootd::Closedir(), XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::QueryError(), XrdPosixXrootd::Readdir64(), XrdPosixXrootd::Readdir64_r(), XrdPosixXrootd::Rewinddir(), XrdPosixXrootd::Seekdir(), XrdPosixXrootd::StatRet(), and XrdPosixXrootd::Telldir().

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getEntries()

long XrdPosixDir::getEntries ( )

inline

Definition at line 65 of file XrdPosixDir.hh.

{ return numEnt;}

Referenced by XrdPosixXrootd::Seekdir().

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getOffset()

long XrdPosixDir::getOffset ( )

inline

Definition at line 67 of file XrdPosixDir.hh.

{ return nxtEnt; }

Referenced by XrdPosixXrootd::Telldir().

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nextEntry()

dirent64 * XrdPosixDir::nextEntry

(

dirent64 *

dp = 0

)

Definition at line 48 of file XrdPosixDir.cc.

{
   XrdCl::DirectoryList::ListEntry *dirEnt;
   const char *d_name;
   const int dirhdrln = dp->d_name - (char *)dp;
   size_t d_nlen;
 
// Reread the directory if we need to (rewind forces this)
//
   if (!myDirVec && !Open()) {eNum = errno; return 0;} // Open() sets ecMsg
 
// Check if dir is empty or all entries have been read
//
   if (nxtEnt >= numEnt) {eNum = 0; return 0;}
 
// Get information about the next entry
//
   dirEnt = myDirVec->At(nxtEnt);
   d_name = dirEnt->GetName().c_str();
   d_nlen = dirEnt->GetName().length();
 
// Create a directory entry
//
   if (!dp) dp = myDirEnt;
   if (d_nlen > maxDlen) d_nlen = maxDlen;
#ifndef __solaris__
   dp->d_type   = DT_UNKNOWN;
#endif
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__GNU__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
   dp->d_fileno = nxtEnt;
   dp->d_namlen = d_nlen;
#else
   dp->d_ino    = nxtEnt+1;
   dp->d_off    = nxtEnt;
#endif
   dp->d_reclen = d_nlen + dirhdrln;
   strncpy(dp->d_name, d_name, d_nlen);
   dp->d_name[d_nlen] = '\0';
 
   // Note we fail if the stat info is needed but not available
   int rc;
   if (myBuf && (rc = XrdPosixMap::Entry2Buf(*dirEnt, *myBuf, ecMsg)))
      {eNum = rc;
       dp = nullptr;
      }
   nxtEnt++;
   return dp;
}

References XrdPosixObject::ecMsg, XrdPosixMap::Entry2Buf(), XrdCl::DirectoryList::ListEntry::GetName(), maxDlen, and Open().

Referenced by XrdPosixXrootd::Readdir64(), and XrdPosixXrootd::Readdir64_r().

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Open()

DIR * XrdPosixDir::Open

(

)

Definition at line 110 of file XrdPosixDir.cc.

{
   static const size_t dEntSize = sizeof(dirent64) + maxDlen + 1;
   int rc;
 
// Allocate a local dirent. Note that we get additional padding because on
// some system the dirent structure does not include the name buffer
//
   if (!myDirEnt && !(myDirEnt = (dirent64 *)malloc(dEntSize)))
      {ecMsg.SetErrno(ENOMEM);
       return (DIR*)0;
      }
 
// Get the directory list
//
   rc = XrdPosixMap::Result(DAdmin.Xrd.DirList(DAdmin.Url.GetPathWithParams(),
                                               XrdPosixGlobals::dlFlag,
                                               myDirVec, (uint16_t)0),ecMsg);
 
// If we failed, return a zero pointer ote that Result() set errno for us
//
   if (rc) return (DIR *)0;
 
// Finish up
//
   numEnt = myDirVec->GetSize();
   return (DIR *)&fdNum;
}

References XrdPosixGlobals::dlFlag, XrdPosixObject::ecMsg, XrdPosixObject::fdNum, maxDlen, and XrdPosixMap::Result().

Referenced by nextEntry(), XrdPosixXrootd::Opendir(), and XrdPosixXrootd::Seekdir().

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rewind()

void XrdPosixDir::rewind ( )

inline

Definition at line 80 of file XrdPosixDir.hh.

                            {objMutex.WriteLock();
                             nxtEnt = 0; delete myDirVec; myDirVec = 0;
                             objMutex.UnLock();
                            }

References XrdPosixObject::objMutex.

Referenced by XrdPosixXrootd::Rewinddir().

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setOffset()

void XrdPosixDir::setOffset ( long offset )

inline

Definition at line 69 of file XrdPosixDir.hh.

{ nxtEnt = offset; }

Referenced by XrdPosixXrootd::Seekdir().

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StatRet()

int XrdPosixDir::StatRet

(

struct stat *

buf

)

Definition at line 100 of file XrdPosixDir.cc.

{
   myBuf = buf;
   return 0;
}

References stat.

Status()

int XrdPosixDir::Status ( )

inline

Definition at line 84 of file XrdPosixDir.hh.

{return eNum;}

Referenced by XrdPosixXrootd::Readdir64(), and XrdPosixXrootd::Readdir64_r().

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Unread()

bool XrdPosixDir::Unread ( )

inline

Definition at line 86 of file XrdPosixDir.hh.

{return myDirVec == 0;}

Referenced by XrdPosixXrootd::Seekdir().

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Who() [1/2]

bool XrdPosixDir::Who ( XrdPosixDir ** dirP )

inlinevirtual

Reimplemented from XrdPosixObject.

Definition at line 90 of file XrdPosixDir.hh.

{*dirP = this; return true;}

References XrdPosixDir().

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Who() [2/2]

virtual bool XrdPosixObject::Who ( XrdPosixFile ** fileP )

inlinevirtual

Reimplemented from XrdPosixObject.

Definition at line 91 of file XrdPosixObject.hh.

{return false;}

Member Data Documentation

maxDlen

const size_t XrdPosixDir::maxDlen = 256

static

Definition at line 92 of file XrdPosixDir.hh.

Referenced by nextEntry(), and Open().

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The documentation for this class was generated from the following files:

• XrdPosixDir.hh
• XrdPosixDir.cc