FileFd: Add a buffered writing mode

[apt.git] / apt-inst / extract.cc

diff --git a/apt-inst/extract.cc b/apt-inst/extract.cc
index 85363b9a1e2d15093f4f056edea6c9724440194a..026182c186ab5181f8dee410a85f8685abbf2da4 100644 (file)
--- a/apt-inst/extract.cc
+++ b/apt-inst/extract.cc
@@ -10,7 +10,7 @@
    object is unpacked to '.dpkg.new' then the original is hardlinked to
    '.dpkg.tmp' and finally the new object is renamed to overwrite the old
    one. From an external perspective the file never ceased to exist.
    object is unpacked to '.dpkg.new' then the original is hardlinked to
    '.dpkg.tmp' and finally the new object is renamed to overwrite the old
    one. From an external perspective the file never ceased to exist.

-   After the archive has been sucessfully unpacked the .dpkg.tmp files 
+   After the archive has been successfully unpacked the .dpkg.tmp files

    are erased. A failure causes all the .dpkg.tmp files to be restored.
    
    Decisions about unpacking go like this:
    are erased. A failure causes all the .dpkg.tmp files to be restored.
    
    Decisions about unpacking go like this:


@@ -22,7 +22,7 @@
         [Note, this is reduced to only check if a file was expected to be
          there]
       - If the existing link/file is not a directory then it is replaced
         [Note, this is reduced to only check if a file was expected to be
          there]
       - If the existing link/file is not a directory then it is replaced

-        irregardless
+        regardless

       - If the existing link/directory is being replaced by a directory then
         absolutely nothing happens.
       - If the existing link/directory is being replaced by a link then
       - If the existing link/directory is being replaced by a directory then
         absolutely nothing happens.
       - If the existing link/directory is being replaced by a link then


@@ -44,16 +44,26 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

+#include<config.h>
+

 #include <apt-pkg/extract.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/debversion.h>
 #include <apt-pkg/extract.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/debversion.h>

+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/dirstream.h>
+#include <apt-pkg/filelist.h>
+#include <apt-pkg/mmap.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>

 
 

+#include <string.h>
+#include <string>

 #include <sys/stat.h>
 #include <stdio.h>
 #include <sys/stat.h>
 #include <stdio.h>

-#include <unistd.h>

 #include <errno.h>
 #include <dirent.h>
 #include <iostream>
 #include <errno.h>
 #include <dirent.h>
 #include <iostream>

+

 #include <apti18n.h>
                                                                        /*}}}*/
 using namespace std;
 #include <apti18n.h>
                                                                        /*}}}*/
 using namespace std;


@@ -76,10 +86,8 @@ pkgExtract::pkgExtract(pkgFLCache &FLCache,pkgCache::VerIterator Ver) :
 // Extract::DoItem - Handle a single item from the stream              /*{{{*/
 // ---------------------------------------------------------------------
 /* This performs the setup for the extraction.. */
 // Extract::DoItem - Handle a single item from the stream              /*{{{*/
 // ---------------------------------------------------------------------
 /* This performs the setup for the extraction.. */

-bool pkgExtract::DoItem(Item &Itm,int &Fd)
+bool pkgExtract::DoItem(Item &Itm, int &/*Fd*/)

 {
 {

-   char Temp[sizeof(FileName)];
-   

    /* Strip any leading/trailing /s from the filename, then copy it to the
       temp buffer and re-apply the leading / We use a class variable
       to store the new filename for use by the three extraction funcs */
    /* Strip any leading/trailing /s from the filename, then copy it to the
       temp buffer and re-apply the leading / We use a class variable
       to store the new filename for use by the three extraction funcs */


@@ -180,6 +188,7 @@ bool pkgExtract::DoItem(Item &Itm,int &Fd)
       // See if we can recover the backup file
       if (Nde.end() == false)
       {
       // See if we can recover the backup file
       if (Nde.end() == false)
       {

+        char Temp[sizeof(FileName)];

         snprintf(Temp,sizeof(Temp),"%s.%s",Itm.Name,TempExt);
         if (rename(Temp,Itm.Name) != 0 && errno != ENOENT)
            return _error->Errno("rename",_("Failed to rename %s to %s"),
         snprintf(Temp,sizeof(Temp),"%s.%s",Itm.Name,TempExt);
         if (rename(Temp,Itm.Name) != 0 && errno != ENOENT)
            return _error->Errno("rename",_("Failed to rename %s to %s"),


@@ -251,7 +260,7 @@ bool pkgExtract::DoItem(Item &Itm,int &Fd)
 // Extract::Finished - Sequence finished, erase the temp files         /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Extract::Finished - Sequence finished, erase the temp files         /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-bool pkgExtract::Finished()
+APT_CONST bool pkgExtract::Finished()

 {
    return true;
 }
 {
    return true;
 }


@@ -372,7 +381,6 @@ bool pkgExtract::HandleOverwrites(pkgFLCache::NodeIterator Nde,
    pkgFLCache::NodeIterator TmpNde = Nde;
    unsigned long DiverOwner = 0;
    unsigned long FileGroup = Nde->File;
    pkgFLCache::NodeIterator TmpNde = Nde;
    unsigned long DiverOwner = 0;
    unsigned long FileGroup = Nde->File;

-   const char *FirstOwner = 0;

    for (; Nde.end() == false && FileGroup == Nde->File; Nde++)
    {
       if ((Nde->Flags & pkgFLCache::Node::Diversion) != 0)
    for (; Nde.end() == false && FileGroup == Nde->File; Nde++)
    {
       if ((Nde->Flags & pkgFLCache::Node::Diversion) != 0)


@@ -392,12 +400,11 @@ bool pkgExtract::HandleOverwrites(pkgFLCache::NodeIterator Nde,
          if something has already been diverted by this diversion */
       if (FPkg.Offset() == DiverOwner)
         continue;
          if something has already been diverted by this diversion */
       if (FPkg.Offset() == DiverOwner)
         continue;

-      FirstOwner = FPkg.Name();
-      
+

       // Now see if this package matches one in a replace depends
       pkgCache::DepIterator Dep = Ver.DependsList();
       bool Ok = false;
       // Now see if this package matches one in a replace depends
       pkgCache::DepIterator Dep = Ver.DependsList();
       bool Ok = false;

-      for (; Dep.end() == false; Dep++)
+      for (; Dep.end() == false; ++Dep)

       {
         if (Dep->Type != pkgCache::Dep::Replaces)
            continue;
       {
         if (Dep->Type != pkgCache::Dep::Replaces)
            continue;