[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, false, true, false, 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, true, false, false, Progress);

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

   pkgDepCache::ActionGroup group(Cache);

   pkgProblemResolver Fix(&Cache);

   if (Cache.BrokenCount() != 0)
      return false;
   
   // 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, true, false, false, Progress);

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

   pkgDepCache::ActionGroup group(Cache);

   pkgProblemResolver Fix(&Cache);

   if (Cache.BrokenCount() != 0)
      return false;

   // 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 DK	30	if (solver != "internal")
	31	return EDSP::ResolveExternal(solver.c_str(), Cache, false, true, false, Progress);
	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 DK	132	if (solver != "internal")
	133	return EDSP::ResolveExternal(solver.c_str(), Cache, true, false, false, Progress);
	134
	135	if (Progress != NULL)
	136	Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));
82e369c4 MV	137
	138	pkgDepCache::ActionGroup group(Cache);
	139
	140	pkgProblemResolver Fix(&Cache);
	141
	142	if (Cache.BrokenCount() != 0)
	143	return false;
	144
	145	// Upgrade all installed packages
	146	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	147	{
	148	if (Cache[I].Install() == true)
	149	Fix.Protect(I);
	150
	151	if (_config->FindB("APT::Ignore-Hold",false) == false)
	152	if (I->SelectedState == pkgCache::State::Hold)
	153	continue;
	154
	155	if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
	156	Cache.MarkInstall(I, false, 0, false);
	157	}
2a884c61 DK	158
	159	if (Progress != NULL)
	160	Progress->Progress(50);
	161
	162	// resolve remaining issues via keep
	163	bool const success = Fix.ResolveByKeep(Progress);
	164	if (Progress != NULL)
	165	Progress->Done();
	166	return success;
82e369c4 MV	167	}
	168	/}}}/
	169	// AllUpgradeWithNewInstalls - Upgrade + install new packages as needed /{{{/
	170	// ---------------------------------------------------------------------
	171	/* Right now the system must be consistent before this can be called.
	172	* Upgrade as much as possible without deleting anything (useful for
	173	* stable systems)
	174	*/
2a884c61	175	static bool pkgAllUpgradeWithNewPackages(pkgDepCache &Cache, OpProgress * const Progress)
82e369c4	176	{
172947cd	177	std::string const solver = _config->Find("APT::Solver", "internal");
2a884c61 DK	178	if (solver != "internal")
	179	return EDSP::ResolveExternal(solver.c_str(), Cache, true, false, false, Progress);
	180
	181	if (Progress != NULL)
	182	Progress->OverallProgress(0, 100, 1, _("Calculating upgrade"));
172947cd	183
82e369c4 MV	184	pkgDepCache::ActionGroup group(Cache);
	185
	186	pkgProblemResolver Fix(&Cache);
	187
	188	if (Cache.BrokenCount() != 0)
	189	return false;
	190
	191	// provide the initial set of stuff we want to upgrade by marking
	192	// all upgradable packages for upgrade
	193	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	194	{
	195	if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
	196	{
	197	if (_config->FindB("APT::Ignore-Hold",false) == false)
	198	if (I->SelectedState == pkgCache::State::Hold)
	199	continue;
	200
	201	Cache.MarkInstall(I, false, 0, false);
	202	}
	203	}
	204
2a884c61 DK	205	if (Progress != NULL)
	206	Progress->Progress(10);
	207
82e369c4 MV	208	// then let auto-install loose
	209	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	210	if (Cache[I].Install())
	211	Cache.MarkInstall(I, true, 0, false);
	212
2a884c61 DK	213	if (Progress != NULL)
	214	Progress->Progress(50);
	215
82e369c4 MV	216	// ... but it may remove stuff, we we need to clean up afterwards again
	217	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	218	if (Cache[I].Delete() == true)
	219	Cache.MarkKeep(I, false, false);
	220
2a884c61 DK	221	if (Progress != NULL)
	222	Progress->Progress(60);
	223
82e369c4	224	// resolve remaining issues via keep
2a884c61 DK	225	bool const success = Fix.ResolveByKeep(Progress);
	226	if (Progress != NULL)
	227	Progress->Done();
	228	return success;
82e369c4 MV	229	}
	230	/}}}/
	231	// AllUpgrade - Upgrade as many packages as possible /{{{/
	232	// ---------------------------------------------------------------------
	233	/* Right now the system must be consistent before this can be called.
	234	It also will not change packages marked for install, it only tries
	235	to install packages not marked for install */
fa5404ab	236	static bool pkgAllUpgrade(pkgDepCache &Cache, OpProgress * const Progress)
82e369c4	237	{
2a884c61	238	return pkgAllUpgradeNoNewPackages(Cache, Progress);
fa5404ab DK	239	}
	240	bool pkgAllUpgrade(pkgDepCache &Cache)
	241	{
	242	return pkgAllUpgrade(Cache, NULL);
82e369c4 MV	243	}
	244	/}}}/
	245	// MinimizeUpgrade - Minimizes the set of packages to be upgraded /{{{/
	246	// ---------------------------------------------------------------------
	247	/* This simply goes over the entire set of packages and tries to keep
	248	each package marked for upgrade. If a conflict is generated then
	249	the package is restored. */
	250	bool pkgMinimizeUpgrade(pkgDepCache &Cache)
	251	{
	252	pkgDepCache::ActionGroup group(Cache);
	253
	254	if (Cache.BrokenCount() != 0)
	255	return false;
	256
	257	// We loop for 10 tries to get the minimal set size.
	258	bool Change = false;
	259	unsigned int Count = 0;
	260	do
	261	{
	262	Change = false;
	263	for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
	264	{
	265	// Not interesting
	266	if (Cache[I].Upgrade() == false \|\| Cache[I].NewInstall() == true)
	267	continue;
	268
	269	// Keep it and see if that is OK
	270	Cache.MarkKeep(I, false, false);
	271	if (Cache.BrokenCount() != 0)
	272	Cache.MarkInstall(I, false, 0, false);
	273	else
	274	{
1e3f4083	275	// If keep didn't actually do anything then there was no change..
82e369c4 MV	276	if (Cache[I].Upgrade() == false)
	277	Change = true;
	278	}
	279	}
	280	++Count;
	281	}
	282	while (Change == true && Count < 10);
	283
	284	if (Cache.BrokenCount() != 0)
	285	return _error->Error("Internal Error in pkgMinimizeUpgrade");
	286
	287	return true;
	288	}
	289	/}}}/
2a884c61 DK	290	// APT::Upgrade::Upgrade - Upgrade using a specific strategy /{{{/
2a884c61 DK	291	bool APT::Upgrade::Upgrade(pkgDepCache &Cache, int mode, OpProgress * const Progress)
82e369c4	292	{
586d8704	293	APT_IGNORE_DEPRECATED_PUSH
67caa2e6	294	if (mode == ALLOW_EVERYTHING)
2a884c61	295	return pkgDistUpgrade(Cache, Progress);
82e369c4	296	else if ((mode & ~FORBID_REMOVE_PACKAGES) == 0)
2a884c61	297	return pkgAllUpgradeWithNewPackages(Cache, Progress);
3f506f68	298	else if ((mode & ~(FORBID_REMOVE_PACKAGES\|FORBID_INSTALL_NEW_PACKAGES)) == 0)
2a884c61	299	return pkgAllUpgradeNoNewPackages(Cache, Progress);
82e369c4 MV	300	else
82e369c4 MV	301	_error->Error("pkgAllUpgrade called with unsupported mode %i", mode);
586d8704	302	APT_IGNORE_DEPRECATED_POP
82e369c4 MV	303	return false;
	304	}
	305	/}}}/