1 files changed, 0 insertions, 376 deletions
diff --git a/kdecore/klockfile.cpp b/kdecore/klockfile.cpp
deleted file mode 100644
index 3bd6edb30..000000000
--- a/kdecore/klockfile.cpp
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
-   This file is part of the KDE libraries
-   Copyright (c) 2004 Waldo Bastian <bastian@kde.org>
-   
-   This library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public
-   License version 2 as published by the Free Software Foundation.
-   
-   This library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-   
-   You should have received a copy of the GNU Library General Public License
-   along with this library; see the file COPYING.LIB.  If not, write to
-   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.
-*/
-
-#include <klockfile.h>
-
-#include <config.h>
-
-#include <sys/types.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <signal.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <tqfile.h>
-#include <tqtextstream.h>
-
-#include <kde_file.h>
-#include <kapplication.h>
-#include <kcmdlineargs.h>
-#include <kglobal.h>
-#include <ktempfile.h>
-
-// TODO: http://www.spinnaker.de/linux/nfs-locking.html
-// TODO: Make regression test
-
-class KLockFile::KLockFilePrivate {
-public:
-   TQString file;
-   int staleTime;
-   bool isLocked;
-   bool recoverLock;
-   bool linkCountSupport;
-   TQTime staleTimer;
-   KDE_struct_stat statBuf;
-   int pid;
-   TQString hostname;
-   TQString instance;
-   TQString lockRecoverFile;
-};
-
-
-// 30 seconds
-KLockFile::KLockFile(const TQString &file)
-{
-  d = new KLockFilePrivate();
-  d->file = file;
-  d->staleTime = 30;
-  d->isLocked = false;
-  d->recoverLock = false;
-  d->linkCountSupport = true;
-}
-
-KLockFile::~KLockFile()
-{
-  unlock();
-  delete d;
-}
-
-int 
-KLockFile::staleTime() const
-{
-  return d->staleTime;
-}
-
-
-void
-KLockFile::setStaleTime(int _staleTime)
-{
-  d->staleTime = _staleTime;
-}
-
-static bool statResultIsEqual(KDE_struct_stat &st_buf1, KDE_struct_stat &st_buf2)
-{
-#define FIELD_EQ(what)       (st_buf1.what == st_buf2.what)
-  return FIELD_EQ(st_dev) && FIELD_EQ(st_ino) && 
-         FIELD_EQ(st_uid) && FIELD_EQ(st_gid) && FIELD_EQ(st_nlink);
-#undef FIELD_EQ
-}
-
-static bool testLinkCountSupport(const TQCString &fileName)
-{
-   KDE_struct_stat st_buf;
-   // Check if hardlinks raise the link count at all?
-   ::link( fileName, fileName+".test" );
-   int result = KDE_lstat( fileName, &st_buf );
-   ::unlink( fileName+".test" );
-   return ((result == 0) && (st_buf.st_nlink == 2));
-}
-
-static KLockFile::LockResult lockFile(const TQString &lockFile, KDE_struct_stat &st_buf, bool &linkCountSupport)
-{
-  TQCString lockFileName = TQFile::encodeName( lockFile );
-  int result = KDE_lstat( lockFileName, &st_buf );
-  if (result == 0)
-     return KLockFile::LockFail;
-  
-  KTempFile uniqueFile(lockFile, TQString::null, 0644);
-  uniqueFile.setAutoDelete(true);
-  if (uniqueFile.status() != 0)
-     return KLockFile::LockError;
-
-  char hostname[256];
-  hostname[0] = 0;
-  gethostname(hostname, 255);
-  hostname[255] = 0;
-  TQCString instanceName = KCmdLineArgs::appName();
-
-  (*(uniqueFile.textStream())) << TQString::number(getpid()) << endl
-      << instanceName << endl
-      << hostname << endl;
-  uniqueFile.close();
-  
-  TQCString uniqueName = TQFile::encodeName( uniqueFile.name() );
-      
-#ifdef Q_OS_UNIX
-  // Create lock file
-  result = ::link( uniqueName, lockFileName );
-  if (result != 0)
-     return KLockFile::LockError;
-     
-  if (!linkCountSupport)
-     return KLockFile::LockOK;
-#else
-  //TODO for win32
-  return KLockFile::LockOK;
-#endif
-
-  KDE_struct_stat st_buf2;
-  result = KDE_lstat( uniqueName, &st_buf2 );
-  if (result != 0)
-     return KLockFile::LockError;
-
-  result = KDE_lstat( lockFileName, &st_buf );
-  if (result != 0)
-     return KLockFile::LockError;
-
-  if (!statResultIsEqual(st_buf, st_buf2) || S_ISLNK(st_buf.st_mode) || S_ISLNK(st_buf2.st_mode))
-  {
-     // SMBFS supports hardlinks by copying the file, as a result the above test will always fail
-     if ((st_buf.st_nlink == 1) && (st_buf2.st_nlink == 1) && (st_buf.st_ino != st_buf2.st_ino))
-     {
-        linkCountSupport = testLinkCountSupport(uniqueName);
-        if (!linkCountSupport)
-           return KLockFile::LockOK; // Link count support is missing... assume everything is OK.
-     }
-     return KLockFile::LockFail;
-  }
-
-  return KLockFile::LockOK;
-}
-
-static KLockFile::LockResult deleteStaleLock(const TQString &lockFile, KDE_struct_stat &st_buf, bool &linkCountSupport)
-{
-   // This is dangerous, we could be deleting a new lock instead of
-   // the old stale one, let's be very careful
-              
-   // Create temp file
-   KTempFile ktmpFile(lockFile);
-   if (ktmpFile.status() != 0)
-      return KLockFile::LockError;
-              
-   TQCString lckFile = TQFile::encodeName(lockFile);
-   TQCString tmpFile = TQFile::encodeName(ktmpFile.name());
-   ktmpFile.close();
-   ktmpFile.unlink();
-              
-#ifdef Q_OS_UNIX
-   // link to lock file
-   if (::link(lckFile, tmpFile) != 0)
-      return KLockFile::LockFail; // Try again later
-#else
-   //TODO for win32
-   return KLockFile::LockOK;
-#endif
-
-   // check if link count increased with exactly one
-   // and if the lock file still matches
-   KDE_struct_stat st_buf1;
-   KDE_struct_stat st_buf2;
-   memcpy(&st_buf1, &st_buf, sizeof(KDE_struct_stat));
-   st_buf1.st_nlink++;
-   if ((KDE_lstat(tmpFile, &st_buf2) == 0) && statResultIsEqual(st_buf1, st_buf2))
-   {
-      if ((KDE_lstat(lckFile, &st_buf2) == 0) && statResultIsEqual(st_buf1, st_buf2))
-      {
-         // - - if yes, delete lock file, delete temp file, retry lock
-         qWarning("WARNING: deleting stale lockfile %s", lckFile.data());
-         ::unlink(lckFile);
-         ::unlink(tmpFile);
-         return KLockFile::LockOK;
-      }
-   }
-   
-   // SMBFS supports hardlinks by copying the file, as a result the above test will always fail
-   if (linkCountSupport)
-   {
-      linkCountSupport = testLinkCountSupport(tmpFile);
-   }
-
-   if (!linkCountSupport && 
-       (KDE_lstat(lckFile, &st_buf2) == 0) && 
-       statResultIsEqual(st_buf, st_buf2))
-   {
-      // Without support for link counts we will have a little race condition
-      qWarning("WARNING: deleting stale lockfile %s", lckFile.data());
-      ::unlink(lckFile);
-      ::unlink(tmpFile);
-      return KLockFile::LockOK;
-   }
-   
-   // Failed to delete stale lock file
-   qWarning("WARNING: Problem deleting stale lockfile %s", lckFile.data());
-   ::unlink(tmpFile);
-   return KLockFile::LockFail;
-}
-
-
-KLockFile::LockResult KLockFile::lock(int options)
-{
-  if (d->isLocked)
-     return KLockFile::LockOK;
-
-  KLockFile::LockResult result;     
-  int hardErrors = 5;
-  int n = 5;
-  while(true)
-  {
-     KDE_struct_stat st_buf;
-     result = lockFile(d->file, st_buf, d->linkCountSupport);
-     if (result == KLockFile::LockOK)
-     {
-        d->staleTimer = TQTime();
-        break;
-     }
-     else if (result == KLockFile::LockError)
-     {
-        d->staleTimer = TQTime();
-        if (--hardErrors == 0)
-        {
-           break;
-        }
-     }
-     else // KLockFile::Fail
-     {
-        if (!d->staleTimer.isNull() && !statResultIsEqual(d->statBuf, st_buf))
-           d->staleTimer = TQTime();
-           
-        if (!d->staleTimer.isNull())
-        {
-           bool isStale = false;
-           if ((d->pid > 0) && !d->hostname.isEmpty())
-           {
-              // Check if hostname is us
-              char hostname[256];
-              hostname[0] = 0;
-              gethostname(hostname, 255);
-              hostname[255] = 0;
-              
-              if (d->hostname == hostname)
-              {
-                 // Check if pid still exists
-                 int res = ::kill(d->pid, 0);
-                 if ((res == -1) && (errno == ESRCH))
-                    isStale = true;
-              }
-           }
-           if (d->staleTimer.elapsed() > (d->staleTime*1000))
-              isStale = true;
-           
-           if (isStale)
-           {
-              if ((options & LockForce) == 0)
-                 return KLockFile::LockStale;
-                 
-              result = deleteStaleLock(d->file, d->statBuf, d->linkCountSupport);
-
-              if (result == KLockFile::LockOK)
-              {
-                 // Lock deletion successful
-                 d->staleTimer = TQTime();
-                 continue; // Now try to get the new lock
-              }
-              else if (result != KLockFile::LockFail)
-              {
-                 return result;
-              }
-           }
-        }
-        else
-        {
-           memcpy(&(d->statBuf), &st_buf, sizeof(KDE_struct_stat));
-           d->staleTimer.start();
-           
-           d->pid = -1;
-           d->hostname = TQString::null;
-           d->instance = TQString::null;
-        
-           TQFile file(d->file);
-           if (file.open(IO_ReadOnly))
-           {
-              TQTextStream ts(&file);
-              if (!ts.atEnd())
-                 d->pid = ts.readLine().toInt();
-              if (!ts.atEnd())
-                 d->instance = ts.readLine();
-              if (!ts.atEnd())
-                 d->hostname = ts.readLine();
-           }
-        }
-     }
-        
-     if ((options & LockNoBlock) != 0)
-        break;
-     
-     struct timeval tv;
-     tv.tv_sec = 0;
-     tv.tv_usec = n*((KApplication::random() % 200)+100);
-     if (n < 2000)
-        n = n * 2;
-     
-#ifdef Q_OS_UNIX
-     select(0, 0, 0, 0, &tv);
-#else
-     //TODO for win32
-#endif
-  }
-  if (result == LockOK)
-     d->isLocked = true;
-  return result;
-}
-   
-bool KLockFile::isLocked() const
-{
-  return d->isLocked;
-}
-   
-void KLockFile::unlock()
-{
-  if (d->isLocked)
-  {
-     ::unlink(TQFile::encodeName(d->file));
-     d->isLocked = false;
-  }
-}
-
-bool KLockFile::getLockInfo(int &pid, TQString &hostname, TQString &appname)
-{
-  if (d->pid == -1)
-     return false;
-  pid = d->pid;
-  hostname = d->hostname;
-  appname = d->instance;
-  return true;
-}