fix crash when P.Arch() was used but the cache got remapped

[apt.git] / apt-pkg / deb / debsystem.cc

diff --git a/apt-pkg/deb/debsystem.cc b/apt-pkg/deb/debsystem.cc
index 31c26ab2fee62f1bc1db4e246cc6aa878a29a2e1..7644bc66bed295f5e063fc180427dd4203664e73 100644 (file)
--- a/apt-pkg/deb/debsystem.cc
+++ b/apt-pkg/deb/debsystem.cc
@@ -18,7 +18,6 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/fileutl.h>
 #include <apti18n.h>
-    
 #include <sys/types.h>
 #include <unistd.h>
 #include <dirent.h>
@@ -27,15 +26,24 @@
 
 debSystem debSys;
 
+class debSystemPrivate {
+public:
+   debSystemPrivate() : LockFD(-1), LockCount(0), StatusFile(0)
+   {
+   }
+   // For locking support
+   int LockFD;
+   unsigned LockCount;
+   
+   debStatusIndex *StatusFile;
+};
+
 // System::debSystem - Constructor                                     /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 debSystem::debSystem()
 {
-   LockFD = -1;
-   LockCount = 0;
-   StatusFile = 0;
-   
+   d = new debSystemPrivate();
    Label = "Debian dpkg interface";
    VS = &debVS;
 }
@@ -45,7 +53,8 @@ debSystem::debSystem()
 /* */
 debSystem::~debSystem()
 {
-   delete StatusFile;
+   delete d->StatusFile;
+   delete d;
 }
                                                                        /*}}}*/
 // System::Lock - Get the lock                                         /*{{{*/
@@ -55,16 +64,16 @@ debSystem::~debSystem()
 bool debSystem::Lock()
 {
    // Disable file locking
-   if (_config->FindB("Debug::NoLocking",false) == true || LockCount > 1)
+   if (_config->FindB("Debug::NoLocking",false) == true || d->LockCount > 1)
    {
-      LockCount++;
+      d->LockCount++;
       return true;
    }
 
    // Create the lockfile
    string AdminDir = flNotFile(_config->Find("Dir::State::status"));
-   LockFD = GetLock(AdminDir + "lock");
-   if (LockFD == -1)
+   d->LockFD = GetLock(AdminDir + "lock");
+   if (d->LockFD == -1)
    {
       if (errno == EACCES || errno == EAGAIN)
         return _error->Error(_("Unable to lock the administration directory (%s), "
@@ -77,13 +86,20 @@ bool debSystem::Lock()
    // See if we need to abort with a dirty journal
    if (CheckUpdates() == true)
    {
-      close(LockFD);
-      LockFD = -1;
+      close(d->LockFD);
+      d->LockFD = -1;
+      const char *cmd;
+      if (getenv("SUDO_USER") != NULL)
+        cmd = "sudo dpkg --configure -a";
+      else
+        cmd = "dpkg --configure -a";
+      // TRANSLATORS: the %s contains the recovery command, usually
+      //              dpkg --configure -a
       return _error->Error(_("dpkg was interrupted, you must manually "
-                             "run 'dpkg --configure -a' to correct the problem. "));
+                             "run '%s' to correct the problem. "), cmd);
    }
 
-        LockCount++;
+        d->LockCount++;
       
    return true;
 }
@@ -93,15 +109,15 @@ bool debSystem::Lock()
 /* */
 bool debSystem::UnLock(bool NoErrors)
 {
-   if (LockCount == 0 && NoErrors == true)
+   if (d->LockCount == 0 && NoErrors == true)
       return false;
    
-   if (LockCount < 1)
+   if (d->LockCount < 1)
       return _error->Error(_("Not locked"));
-   if (--LockCount == 0)
+   if (--d->LockCount == 0)
    {
-      close(LockFD);
-      LockCount = 0;
+      close(d->LockFD);
+      d->LockCount = 0;
    }
    
    return true;
@@ -158,13 +174,13 @@ bool debSystem::Initialize(Configuration &Cnf)
    /* These really should be jammed into a generic 'Local Database' engine
       which is yet to be determined. The functions in pkgcachegen should
       be the only users of these */
-   Cnf.CndSet("Dir::State::extended_states", Cnf.FindDir("Dir::State").append("extended_states"));
+   Cnf.CndSet("Dir::State::extended_states", "extended_states");
    Cnf.CndSet("Dir::State::status","/var/lib/dpkg/status");
    Cnf.CndSet("Dir::Bin::dpkg","/usr/bin/dpkg");
 
-   if (StatusFile) {
-     delete StatusFile;
-     StatusFile = 0;
+   if (d->StatusFile) {
+     delete d->StatusFile;
+     d->StatusFile = 0;
    }
 
    return true;
@@ -202,9 +218,9 @@ signed debSystem::Score(Configuration const &Cnf)
 /* */
 bool debSystem::AddStatusFiles(vector<pkgIndexFile *> &List)
 {
-   if (StatusFile == 0)
-      StatusFile = new debStatusIndex(_config->FindFile("Dir::State::status"));
-   List.push_back(StatusFile);
+   if (d->StatusFile == 0)
+      d->StatusFile = new debStatusIndex(_config->FindFile("Dir::State::status"));
+   List.push_back(d->StatusFile);
    return true;
 }
                                                                        /*}}}*/
@@ -214,11 +230,11 @@ bool debSystem::AddStatusFiles(vector<pkgIndexFile *> &List)
 bool debSystem::FindIndex(pkgCache::PkgFileIterator File,
                          pkgIndexFile *&Found) const
 {
-   if (StatusFile == 0)
+   if (d->StatusFile == 0)
       return false;
-   if (StatusFile->FindInCache(*File.Cache()) == File)
+   if (d->StatusFile->FindInCache(*File.Cache()) == File)
    {
-      Found = StatusFile;
+      Found = d->StatusFile;
       return true;
    }