[apt.git] / apt-pkg / upgrade.cc

// Include Files							/*{{{*/
#include <config.h>

#include <apt-pkg/algorithms.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/edsp.h>
#include <apt-pkg/error.h>
#include <apt-pkg/progress.h>
#include <apt-pkg/upgrade.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/cacheiterators.h>

#include <string>

#include <apti18n.h>
									/*}}}*/

// DistUpgrade - Distribution upgrade					/*{{{*/
// ---------------------------------------------------------------------
/* This autoinstalls every package and then force installs every 
   pre-existing package. This creates the initial set of conditions which 
   most likely contain problems because too many things were installed.
   
   The problem resolver is used to resolve the problems.
 */
static bool pkgDistUpgrade(pkgDepCache &Cache, OpProgress * const Progress)
{
   std::string const solver = _config->Find("APT::Solver", "internal");
   if (solver != "internal")
      return EDSP::ResolveExternal(solver.c_str(), Cache, EDSP::Request::UPGRADE_ALL, Progress);

   if (Progress != NULL)
      Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));

   pkgDepCache::ActionGroup group(Cache);

   /* Upgrade all installed packages first without autoinst to help the resolver
      in versioned or-groups to upgrade the old solver instead of installing
      a new one (if the old solver is not the first one [anymore]) */
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      if (I->CurrentVer != 0)
	 Cache.MarkInstall(I, false, 0, false);

   if (Progress != NULL)
      Progress->Progress(10);

   /* Auto upgrade all installed packages, this provides the basis 
      for the installation */
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      if (I->CurrentVer != 0)
	 Cache.MarkInstall(I, true, 0, false);

   if (Progress != NULL)
      Progress->Progress(50);

   /* Now, install each essential package which is not installed
      (and not provided by another package in the same name group) */
   std::string essential = _config->Find("pkgCacheGen::Essential", "all");
   if (essential == "all")
   {
      for (pkgCache::GrpIterator G = Cache.GrpBegin(); G.end() == false; ++G)
      {
	 bool isEssential = false;
	 bool instEssential = false;
	 for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
	 {
	    if ((P->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
	       continue;
	    isEssential = true;
	    if (Cache[P].Install() == true)
	    {
	       instEssential = true;
	       break;
	    }
	 }
	 if (isEssential == false || instEssential == true)
	    continue;
	 pkgCache::PkgIterator P = G.FindPreferredPkg();
	 Cache.MarkInstall(P, true, 0, false);
      }
   }
   else if (essential != "none")
      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	 if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
	    Cache.MarkInstall(I, true, 0, false);

   if (Progress != NULL)
      Progress->Progress(55);

   /* We do it again over all previously installed packages to force 
      conflict resolution on them all. */
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      if (I->CurrentVer != 0)
	 Cache.MarkInstall(I, false, 0, false);

   if (Progress != NULL)
      Progress->Progress(65);

   pkgProblemResolver Fix(&Cache);

   if (Progress != NULL)
      Progress->Progress(95);

   // Hold back held packages.
   if (_config->FindB("APT::Ignore-Hold",false) == false)
   {
      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      {
	 if (I->SelectedState == pkgCache::State::Hold)
	 {
	    Fix.Protect(I);
	    Cache.MarkKeep(I, false, false);
	 }
      }
   }

   bool const success = Fix.Resolve(false, Progress);
   if (Progress != NULL)
      Progress->Done();
   return success;
}
bool pkgDistUpgrade(pkgDepCache &Cache)
{
   return pkgDistUpgrade(Cache, NULL);
}
									/*}}}*/
// AllUpgradeNoNewPackages - Upgrade but no removals or new pkgs        /*{{{*/
static bool pkgAllUpgradeNoNewPackages(pkgDepCache &Cache, OpProgress * const Progress)
{
   std::string const solver = _config->Find("APT::Solver", "internal");
   if (solver != "internal")
      return EDSP::ResolveExternal(solver.c_str(), Cache,
	    EDSP::Request::UPGRADE_ALL | EDSP::Request::FORBID_NEW_INSTALL | EDSP::Request::FORBID_REMOVE,
	    Progress);

   if (Progress != NULL)
      Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));

   pkgDepCache::ActionGroup group(Cache);
   pkgProblemResolver Fix(&Cache);

   // Upgrade all installed packages
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
   {
      if (Cache[I].Install() == true)
	 Fix.Protect(I);
	  
      if (_config->FindB("APT::Ignore-Hold",false) == false)
	 if (I->SelectedState == pkgCache::State::Hold)
	    continue;
      
      if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
	 Cache.MarkInstall(I, false, 0, false);
   }

   if (Progress != NULL)
      Progress->Progress(50);

   // resolve remaining issues via keep
   bool const success = Fix.ResolveByKeep(Progress);
   if (Progress != NULL)
      Progress->Done();
   return success;
}
									/*}}}*/
// AllUpgradeWithNewInstalls - Upgrade + install new packages as needed /*{{{*/
// ---------------------------------------------------------------------
/* Right now the system must be consistent before this can be called.
 * Upgrade as much as possible without deleting anything (useful for
 * stable systems)
 */
static bool pkgAllUpgradeWithNewPackages(pkgDepCache &Cache, OpProgress * const Progress)
{
   std::string const solver = _config->Find("APT::Solver", "internal");
   if (solver != "internal")
       return EDSP::ResolveExternal(solver.c_str(), Cache,
	    EDSP::Request::UPGRADE_ALL | EDSP::Request::FORBID_REMOVE,
	    Progress);

   if (Progress != NULL)
      Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));

   pkgDepCache::ActionGroup group(Cache);
   pkgProblemResolver Fix(&Cache);

   // provide the initial set of stuff we want to upgrade by marking
   // all upgradable packages for upgrade
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
   {
      if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
      {
         if (_config->FindB("APT::Ignore-Hold",false) == false)
            if (I->SelectedState == pkgCache::State::Hold)
               continue;

	 Cache.MarkInstall(I, false, 0, false);
      }
   }

   if (Progress != NULL)
      Progress->Progress(10);

   // then let auto-install loose
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      if (Cache[I].Install())
	 Cache.MarkInstall(I, true, 0, false);

   if (Progress != NULL)
      Progress->Progress(50);

   // ... but it may remove stuff, we we need to clean up afterwards again
   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      if (Cache[I].Delete() == true)
	 Cache.MarkKeep(I, false, false);

   if (Progress != NULL)
      Progress->Progress(60);

   // resolve remaining issues via keep
   bool const success = Fix.ResolveByKeep(Progress);
   if (Progress != NULL)
      Progress->Done();
   return success;
}
									/*}}}*/
// AllUpgrade - Upgrade as many packages as possible			/*{{{*/
// ---------------------------------------------------------------------
/* Right now the system must be consistent before this can be called.
   It also will not change packages marked for install, it only tries
   to install packages not marked for install */
static bool pkgAllUpgrade(pkgDepCache &Cache, OpProgress * const Progress)
{
   return pkgAllUpgradeNoNewPackages(Cache, Progress);
}
bool pkgAllUpgrade(pkgDepCache &Cache)
{
   return pkgAllUpgrade(Cache, NULL);
}
									/*}}}*/
// MinimizeUpgrade - Minimizes the set of packages to be upgraded	/*{{{*/
// ---------------------------------------------------------------------
/* This simply goes over the entire set of packages and tries to keep 
   each package marked for upgrade. If a conflict is generated then 
   the package is restored. */
bool pkgMinimizeUpgrade(pkgDepCache &Cache)
{   
   pkgDepCache::ActionGroup group(Cache);

   if (Cache.BrokenCount() != 0)
      return false;
   
   // We loop for 10 tries to get the minimal set size.
   bool Change = false;
   unsigned int Count = 0;
   do
   {
      Change = false;
      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
      {
	 // Not interesting
	 if (Cache[I].Upgrade() == false || Cache[I].NewInstall() == true)
	    continue;

	 // Keep it and see if that is OK
	 Cache.MarkKeep(I, false, false);
	 if (Cache.BrokenCount() != 0)
	    Cache.MarkInstall(I, false, 0, false);
	 else
	 {
	    // If keep didn't actually do anything then there was no change..
	    if (Cache[I].Upgrade() == false)
	       Change = true;
	 }	 
      }      
      ++Count;
   }
   while (Change == true && Count < 10);

   if (Cache.BrokenCount() != 0)
      return _error->Error("Internal Error in pkgMinimizeUpgrade");
   
   return true;
}
									/*}}}*/
// APT::Upgrade::Upgrade - Upgrade using a specific strategy		/*{{{*/
bool APT::Upgrade::Upgrade(pkgDepCache &Cache, int mode, OpProgress * const Progress)
{
APT_IGNORE_DEPRECATED_PUSH
   if (mode == ALLOW_EVERYTHING)
      return pkgDistUpgrade(Cache, Progress);
   else if ((mode & ~FORBID_REMOVE_PACKAGES) == 0)
      return pkgAllUpgradeWithNewPackages(Cache, Progress);
   else if ((mode & ~(FORBID_REMOVE_PACKAGES|FORBID_INSTALL_NEW_PACKAGES)) == 0)
      return pkgAllUpgradeNoNewPackages(Cache, Progress);
   else
      _error->Error("pkgAllUpgrade called with unsupported mode %i", mode);
APT_IGNORE_DEPRECATED_POP
   return false;
}
									/*}}}*/
Commit	Line	Data
82e369c4 MV	1	// Include Files /{{{/
	2	#include <config.h>
	3
	4	#include <apt-pkg/algorithms.h>
82e369c4	5	#include <apt-pkg/configuration.h>
82e369c4	6	#include <apt-pkg/edsp.h>
453b82a3	7	#include <apt-pkg/error.h>
82e369c4	8	#include <apt-pkg/progress.h>
453b82a3 DK	9	#include <apt-pkg/upgrade.h>
	10	#include <apt-pkg/depcache.h>
	11	#include <apt-pkg/pkgcache.h>
	12	#include <apt-pkg/cacheiterators.h>
82e369c4	13
453b82a3	14	#include <string>
82e369c4 MV	15
	16	#include <apti18n.h>
	17	/}}}/
	18
	19	// DistUpgrade - Distribution upgrade /{{{/
	20	// ---------------------------------------------------------------------
	21	/* This autoinstalls every package and then force installs every
	22	pre-existing package. This creates the initial set of conditions which
	23	most likely contain problems because too many things were installed.
	24
	25	The problem resolver is used to resolve the problems.
	26	*/
fa5404ab	27	static bool pkgDistUpgrade(pkgDepCache &Cache, OpProgress * const Progress)
82e369c4 MV	28	{
82e369c4 MV	29	std::string const solver = _config->Find("APT::Solver", "internal");
2a884c61	30	if (solver != "internal")
43c71fad	31	return EDSP::ResolveExternal(solver.c_str(), Cache, EDSP::Request::UPGRADE_ALL, Progress);
2a884c61 DK	32
	33	if (Progress != NULL)
	34	Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));
82e369c4 MV	35
	36	pkgDepCache::ActionGroup group(Cache);
	37
	38	/* Upgrade all installed packages first without autoinst to help the resolver
	39	in versioned or-groups to upgrade the old solver instead of installing
	40	a new one (if the old solver is not the first one [anymore]) */
	41	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	42	if (I->CurrentVer != 0)
	43	Cache.MarkInstall(I, false, 0, false);
	44
2a884c61 DK	45	if (Progress != NULL)
	46	Progress->Progress(10);
	47
82e369c4 MV	48	/* Auto upgrade all installed packages, this provides the basis
	49	for the installation */
	50	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	51	if (I->CurrentVer != 0)
	52	Cache.MarkInstall(I, true, 0, false);
	53
2a884c61 DK	54	if (Progress != NULL)
	55	Progress->Progress(50);
	56
82e369c4 MV	57	/* Now, install each essential package which is not installed
	58	(and not provided by another package in the same name group) */
	59	std::string essential = _config->Find("pkgCacheGen::Essential", "all");
	60	if (essential == "all")
	61	{
	62	for (pkgCache::GrpIterator G = Cache.GrpBegin(); G.end() == false; ++G)
	63	{
	64	bool isEssential = false;
	65	bool instEssential = false;
	66	for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
	67	{
	68	if ((P->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
	69	continue;
	70	isEssential = true;
	71	if (Cache[P].Install() == true)
	72	{
	73	instEssential = true;
	74	break;
	75	}
	76	}
	77	if (isEssential == false \|\| instEssential == true)
	78	continue;
	79	pkgCache::PkgIterator P = G.FindPreferredPkg();
	80	Cache.MarkInstall(P, true, 0, false);
	81	}
	82	}
	83	else if (essential != "none")
	84	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	85	if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
	86	Cache.MarkInstall(I, true, 0, false);
2a884c61 DK	87
	88	if (Progress != NULL)
	89	Progress->Progress(55);
	90
82e369c4 MV	91	/* We do it again over all previously installed packages to force
	92	conflict resolution on them all. */
	93	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	94	if (I->CurrentVer != 0)
	95	Cache.MarkInstall(I, false, 0, false);
	96
2a884c61 DK	97	if (Progress != NULL)
	98	Progress->Progress(65);
	99
82e369c4 MV	100	pkgProblemResolver Fix(&Cache);
82e369c4 MV	101
2a884c61 DK	102	if (Progress != NULL)
	103	Progress->Progress(95);
	104
82e369c4 MV	105	// Hold back held packages.
	106	if (_config->FindB("APT::Ignore-Hold",false) == false)
	107	{
	108	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	109	{
	110	if (I->SelectedState == pkgCache::State::Hold)
	111	{
	112	Fix.Protect(I);
	113	Cache.MarkKeep(I, false, false);
	114	}
	115	}
	116	}
2a884c61 DK	117
	118	bool const success = Fix.Resolve(false, Progress);
	119	if (Progress != NULL)
	120	Progress->Done();
	121	return success;
fa5404ab DK	122	}
	123	bool pkgDistUpgrade(pkgDepCache &Cache)
	124	{
	125	return pkgDistUpgrade(Cache, NULL);
82e369c4 MV	126	}
	127	/}}}/
	128	// AllUpgradeNoNewPackages - Upgrade but no removals or new pkgs /{{{/
2a884c61	129	static bool pkgAllUpgradeNoNewPackages(pkgDepCache &Cache, OpProgress * const Progress)
82e369c4 MV	130	{
82e369c4 MV	131	std::string const solver = _config->Find("APT::Solver", "internal");
2a884c61	132	if (solver != "internal")
43c71fad DK	133	return EDSP::ResolveExternal(solver.c_str(), Cache,
	134	EDSP::Request::UPGRADE_ALL \| EDSP::Request::FORBID_NEW_INSTALL \| EDSP::Request::FORBID_REMOVE,
	135	Progress);
2a884c61 DK	136
	137	if (Progress != NULL)
	138	Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));
82e369c4 MV	139
82e369c4 MV	140	pkgDepCache::ActionGroup group(Cache);
82e369c4 MV	141	pkgProblemResolver Fix(&Cache);
82e369c4 MV	142
82e369c4 MV	143	// Upgrade all installed packages
	144	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	145	{
	146	if (Cache[I].Install() == true)
	147	Fix.Protect(I);
	148
	149	if (_config->FindB("APT::Ignore-Hold",false) == false)
	150	if (I->SelectedState == pkgCache::State::Hold)
	151	continue;
	152
	153	if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
	154	Cache.MarkInstall(I, false, 0, false);
	155	}
2a884c61 DK	156
	157	if (Progress != NULL)
	158	Progress->Progress(50);
	159
	160	// resolve remaining issues via keep
	161	bool const success = Fix.ResolveByKeep(Progress);
	162	if (Progress != NULL)
	163	Progress->Done();
	164	return success;
82e369c4 MV	165	}
	166	/}}}/
	167	// AllUpgradeWithNewInstalls - Upgrade + install new packages as needed /{{{/
	168	// ---------------------------------------------------------------------
	169	/* Right now the system must be consistent before this can be called.
	170	* Upgrade as much as possible without deleting anything (useful for
	171	* stable systems)
	172	*/
2a884c61	173	static bool pkgAllUpgradeWithNewPackages(pkgDepCache &Cache, OpProgress * const Progress)
82e369c4	174	{
172947cd	175	std::string const solver = _config->Find("APT::Solver", "internal");
2a884c61	176	if (solver != "internal")
43c71fad DK	177	return EDSP::ResolveExternal(solver.c_str(), Cache,
	178	EDSP::Request::UPGRADE_ALL \| EDSP::Request::FORBID_REMOVE,
	179	Progress);
2a884c61 DK	180
	181	if (Progress != NULL)
	182	Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));
172947cd	183
82e369c4	184	pkgDepCache::ActionGroup group(Cache);
82e369c4 MV	185	pkgProblemResolver Fix(&Cache);
82e369c4 MV	186
82e369c4 MV	187	// provide the initial set of stuff we want to upgrade by marking
	188	// all upgradable packages for upgrade
	189	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	190	{
	191	if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
	192	{
	193	if (_config->FindB("APT::Ignore-Hold",false) == false)
	194	if (I->SelectedState == pkgCache::State::Hold)
	195	continue;
	196
	197	Cache.MarkInstall(I, false, 0, false);
	198	}
	199	}
	200
2a884c61 DK	201	if (Progress != NULL)
	202	Progress->Progress(10);
	203
82e369c4 MV	204	// then let auto-install loose
	205	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	206	if (Cache[I].Install())
	207	Cache.MarkInstall(I, true, 0, false);
	208
2a884c61 DK	209	if (Progress != NULL)
	210	Progress->Progress(50);
	211
82e369c4 MV	212	// ... but it may remove stuff, we we need to clean up afterwards again
	213	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	214	if (Cache[I].Delete() == true)
	215	Cache.MarkKeep(I, false, false);
	216
2a884c61 DK	217	if (Progress != NULL)
	218	Progress->Progress(60);
	219
82e369c4	220	// resolve remaining issues via keep
2a884c61 DK	221	bool const success = Fix.ResolveByKeep(Progress);
	222	if (Progress != NULL)
	223	Progress->Done();
	224	return success;
82e369c4 MV	225	}
	226	/}}}/
	227	// AllUpgrade - Upgrade as many packages as possible /{{{/
	228	// ---------------------------------------------------------------------
	229	/* Right now the system must be consistent before this can be called.
	230	It also will not change packages marked for install, it only tries
	231	to install packages not marked for install */
fa5404ab	232	static bool pkgAllUpgrade(pkgDepCache &Cache, OpProgress * const Progress)
82e369c4	233	{
2a884c61	234	return pkgAllUpgradeNoNewPackages(Cache, Progress);
fa5404ab DK	235	}
	236	bool pkgAllUpgrade(pkgDepCache &Cache)
	237	{
	238	return pkgAllUpgrade(Cache, NULL);
82e369c4 MV	239	}
	240	/}}}/
	241	// MinimizeUpgrade - Minimizes the set of packages to be upgraded /{{{/
	242	// ---------------------------------------------------------------------
	243	/* This simply goes over the entire set of packages and tries to keep
	244	each package marked for upgrade. If a conflict is generated then
	245	the package is restored. */
	246	bool pkgMinimizeUpgrade(pkgDepCache &Cache)
	247	{
	248	pkgDepCache::ActionGroup group(Cache);
	249
	250	if (Cache.BrokenCount() != 0)
	251	return false;
	252
	253	// We loop for 10 tries to get the minimal set size.
	254	bool Change = false;
	255	unsigned int Count = 0;
	256	do
	257	{
	258	Change = false;
	259	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	260	{
	261	// Not interesting
	262	if (Cache[I].Upgrade() == false \|\| Cache[I].NewInstall() == true)
	263	continue;
	264
	265	// Keep it and see if that is OK
	266	Cache.MarkKeep(I, false, false);
	267	if (Cache.BrokenCount() != 0)
	268	Cache.MarkInstall(I, false, 0, false);
	269	else
	270	{
1e3f4083	271	// If keep didn't actually do anything then there was no change..
82e369c4 MV	272	if (Cache[I].Upgrade() == false)
	273	Change = true;
	274	}
	275	}
	276	++Count;
	277	}
	278	while (Change == true && Count < 10);
	279
	280	if (Cache.BrokenCount() != 0)
	281	return _error->Error("Internal Error in pkgMinimizeUpgrade");
	282
	283	return true;
	284	}
	285	/}}}/
2a884c61 DK	286	// APT::Upgrade::Upgrade - Upgrade using a specific strategy /{{{/
2a884c61 DK	287	bool APT::Upgrade::Upgrade(pkgDepCache &Cache, int mode, OpProgress * const Progress)
82e369c4	288	{
586d8704	289	APT_IGNORE_DEPRECATED_PUSH
67caa2e6	290	if (mode == ALLOW_EVERYTHING)
2a884c61	291	return pkgDistUpgrade(Cache, Progress);
82e369c4	292	else if ((mode & ~FORBID_REMOVE_PACKAGES) == 0)
2a884c61	293	return pkgAllUpgradeWithNewPackages(Cache, Progress);
3f506f68	294	else if ((mode & ~(FORBID_REMOVE_PACKAGES\|FORBID_INSTALL_NEW_PACKAGES)) == 0)
2a884c61	295	return pkgAllUpgradeNoNewPackages(Cache, Progress);
82e369c4 MV	296	else
82e369c4 MV	297	_error->Error("pkgAllUpgrade called with unsupported mode %i", mode);
586d8704	298	APT_IGNORE_DEPRECATED_POP
82e369c4 MV	299	return false;
	300	}
	301	/}}}/