##################################################################### */
/*}}}*/
// Include Files /*{{{*/
+#include <config.h>
+
#include <apt-pkg/edsp.h>
#include <apt-pkg/error.h>
+#include <apt-pkg/cacheset.h>
#include <apt-pkg/configuration.h>
-#include <apt-pkg/version.h>
-#include <apt-pkg/policy.h>
#include <apt-pkg/tagfile.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/pkgrecords.h>
-#include <apti18n.h>
+#include <ctype.h>
+#include <stddef.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <algorithm>
+#include <iostream>
+#include <vector>
#include <limits>
+#include <string>
+#include <list>
-#include <stdio.h>
+#include <apti18n.h>
/*}}}*/
+using std::string;
+
+// we could use pkgCache::DepType and ::Priority, but these would be localized strings…
+const char * const EDSP::PrioMap[] = {0, "important", "required", "standard",
+ "optional", "extra"};
+const char * const EDSP::DepMap[] = {"", "Depends", "Pre-Depends", "Suggests",
+ "Recommends" , "Conflicts", "Replaces",
+ "Obsoletes", "Breaks", "Enhances"};
+
// EDSP::WriteScenario - to the given file descriptor /*{{{*/
-bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output)
+bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output, OpProgress *Progress)
{
- // we could use pkgCache::DepType and ::Priority, but these would be lokalized strings…
- const char * const PrioMap[] = {0, "important", "required", "standard",
- "optional", "extra"};
- const char * const DepMap[] = {"", "Depends", "PreDepends", "Suggests",
- "Recommends" , "Conflicts", "Replaces",
- "Obsoletes", "Breaks", "Enhances"};
-
+ if (Progress != NULL)
+ Progress->SubProgress(Cache.Head().VersionCount, _("Send scenario to solver"));
+ unsigned long p = 0;
+ std::vector<std::string> archs = APT::Configuration::getArchitectures();
for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
{
- for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
+ std::string const arch = Pkg.Arch();
+ if (std::find(archs.begin(), archs.end(), arch) == archs.end())
+ continue;
+ for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver, ++p)
{
- fprintf(output, "Package: %s\n", Pkg.Name());
- fprintf(output, "Architecture: %s\n", Ver.Arch());
- fprintf(output, "Version: %s\n", Ver.VerStr());
- if (Pkg.CurrentVer() == Ver)
- fprintf(output, "Installed: yes\n");
- if (Pkg->SelectedState == pkgCache::State::Hold)
- fprintf(output, "Hold: yes\n");
- fprintf(output, "APT-ID: %d\n", Ver->ID);
- fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]);
- if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
- fprintf(output, "Essential: yes\n");
- fprintf(output, "Section: %s\n", Ver.Section());
- if (Ver->MultiArch == pkgCache::Version::Allowed || Ver->MultiArch == pkgCache::Version::AllAllowed)
- fprintf(output, "Multi-Arch: allowed\n");
- else if (Ver->MultiArch == pkgCache::Version::Foreign || Ver->MultiArch == pkgCache::Version::AllForeign)
- fprintf(output, "Multi-Arch: foreign\n");
- else if (Ver->MultiArch == pkgCache::Version::Same)
- fprintf(output, "Multi-Arch: same\n");
- signed short Pin = std::numeric_limits<signed short>::min();
- for (pkgCache::VerFileIterator File = Ver.FileList(); File.end() == false; ++File) {
- signed short const p = Cache.GetPolicy().GetPriority(File.File());
- if (Pin < p)
- Pin = p;
- }
- fprintf(output, "APT-Pin: %d\n", Pin);
- if (Cache.GetCandidateVer(Pkg) == Ver)
- fprintf(output, "APT-Candidate: yes\n");
- if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
- fprintf(output, "APT-Automatic: yes\n");
- std::string dependencies[pkgCache::Dep::Enhances + 1];
- bool orGroup = false;
- for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
- {
- // Ignore implicit dependencies for multiarch here
- if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
- continue;
- if (orGroup == false)
- dependencies[Dep->Type].append(", ");
- dependencies[Dep->Type].append(Dep.TargetPkg().Name());
- if (Dep->Version != 0)
- dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
- if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
- {
- dependencies[Dep->Type].append(" | ");
- orGroup = true;
- }
- else
- orGroup = false;
- }
- for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
- if (dependencies[i].empty() == false)
- fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
- string provides;
- for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
- {
- // Ignore implicit provides for multiarch here
- if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0)
- continue;
- provides.append(", ").append(Prv.Name());
- }
- if (provides.empty() == false)
- fprintf(output, "Provides: %s\n", provides.c_str()+2);
-
-
+ WriteScenarioVersion(Cache, output, Pkg, Ver);
+ WriteScenarioDependency(output, Ver);
fprintf(output, "\n");
+ if (Progress != NULL && p % 100 == 0)
+ Progress->Progress(p);
}
}
return true;
}
/*}}}*/
+// EDSP::WriteLimitedScenario - to the given file descriptor /*{{{*/
+bool EDSP::WriteLimitedScenario(pkgDepCache &Cache, FILE* output,
+ APT::PackageSet const &pkgset,
+ OpProgress *Progress)
+{
+ if (Progress != NULL)
+ Progress->SubProgress(Cache.Head().VersionCount, _("Send scenario to solver"));
+ unsigned long p = 0;
+ for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg, ++p)
+ for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
+ {
+ WriteScenarioVersion(Cache, output, Pkg, Ver);
+ WriteScenarioLimitedDependency(output, Ver, pkgset);
+ fprintf(output, "\n");
+ if (Progress != NULL && p % 100 == 0)
+ Progress->Progress(p);
+ }
+ if (Progress != NULL)
+ Progress->Done();
+ return true;
+}
+ /*}}}*/
+// EDSP::WriteScenarioVersion /*{{{*/
+void EDSP::WriteScenarioVersion(pkgDepCache &Cache, FILE* output, pkgCache::PkgIterator const &Pkg,
+ pkgCache::VerIterator const &Ver)
+{
+ fprintf(output, "Package: %s\n", Pkg.Name());
+ fprintf(output, "Source: %s\n", Ver.SourcePkgName());
+ fprintf(output, "Architecture: %s\n", Ver.Arch());
+ fprintf(output, "Version: %s\n", Ver.VerStr());
+ if (Pkg.CurrentVer() == Ver)
+ fprintf(output, "Installed: yes\n");
+ if (Pkg->SelectedState == pkgCache::State::Hold ||
+ (Cache[Pkg].Keep() == true && Cache[Pkg].Protect() == true))
+ fprintf(output, "Hold: yes\n");
+ fprintf(output, "APT-ID: %d\n", Ver->ID);
+ fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]);
+ if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+ fprintf(output, "Essential: yes\n");
+ fprintf(output, "Section: %s\n", Ver.Section());
+ if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
+ fprintf(output, "Multi-Arch: allowed\n");
+ else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
+ fprintf(output, "Multi-Arch: foreign\n");
+ else if ((Ver->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+ fprintf(output, "Multi-Arch: same\n");
+ signed short Pin = std::numeric_limits<signed short>::min();
+ std::set<string> Releases;
+ for (pkgCache::VerFileIterator I = Ver.FileList(); I.end() == false; ++I) {
+ pkgCache::PkgFileIterator File = I.File();
+ signed short const p = Cache.GetPolicy().GetPriority(File);
+ if (Pin < p)
+ Pin = p;
+ if ((File->Flags & pkgCache::Flag::NotSource) != pkgCache::Flag::NotSource) {
+ string Release = File.RelStr();
+ if (!Release.empty())
+ Releases.insert(Release);
+ }
+ }
+ if (!Releases.empty()) {
+ fprintf(output, "APT-Release:\n");
+ for (std::set<string>::iterator R = Releases.begin(); R != Releases.end(); ++R)
+ fprintf(output, " %s\n", R->c_str());
+ }
+ fprintf(output, "APT-Pin: %d\n", Pin);
+ if (Cache.GetCandidateVer(Pkg) == Ver)
+ fprintf(output, "APT-Candidate: yes\n");
+ if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
+ fprintf(output, "APT-Automatic: yes\n");
+}
+ /*}}}*/
+// EDSP::WriteScenarioDependency /*{{{*/
+void EDSP::WriteScenarioDependency( FILE* output, pkgCache::VerIterator const &Ver)
+{
+ std::string dependencies[pkgCache::Dep::Enhances + 1];
+ bool orGroup = false;
+ for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
+ {
+ if (Dep.IsMultiArchImplicit() == true)
+ continue;
+ if (orGroup == false)
+ dependencies[Dep->Type].append(", ");
+ dependencies[Dep->Type].append(Dep.TargetPkg().Name());
+ if (Dep->Version != 0)
+ dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
+ if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+ {
+ dependencies[Dep->Type].append(" | ");
+ orGroup = true;
+ }
+ else
+ orGroup = false;
+ }
+ for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
+ if (dependencies[i].empty() == false)
+ fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
+ string provides;
+ for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
+ {
+ if (Prv.IsMultiArchImplicit() == true)
+ continue;
+ provides.append(", ").append(Prv.Name());
+ }
+ if (provides.empty() == false)
+ fprintf(output, "Provides: %s\n", provides.c_str()+2);
+}
+ /*}}}*/
+// EDSP::WriteScenarioLimitedDependency /*{{{*/
+void EDSP::WriteScenarioLimitedDependency(FILE* output,
+ pkgCache::VerIterator const &Ver,
+ APT::PackageSet const &pkgset)
+{
+ std::string dependencies[pkgCache::Dep::Enhances + 1];
+ bool orGroup = false;
+ for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
+ {
+ if (Dep.IsMultiArchImplicit() == true)
+ continue;
+ if (orGroup == false)
+ {
+ if (pkgset.find(Dep.TargetPkg()) == pkgset.end())
+ continue;
+ dependencies[Dep->Type].append(", ");
+ }
+ else if (pkgset.find(Dep.TargetPkg()) == pkgset.end())
+ {
+ if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+ continue;
+ dependencies[Dep->Type].erase(dependencies[Dep->Type].end()-3, dependencies[Dep->Type].end());
+ orGroup = false;
+ continue;
+ }
+ dependencies[Dep->Type].append(Dep.TargetPkg().Name());
+ if (Dep->Version != 0)
+ dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
+ if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+ {
+ dependencies[Dep->Type].append(" | ");
+ orGroup = true;
+ }
+ else
+ orGroup = false;
+ }
+ for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
+ if (dependencies[i].empty() == false)
+ fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
+ string provides;
+ for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
+ {
+ if (Prv.IsMultiArchImplicit() == true)
+ continue;
+ if (pkgset.find(Prv.ParentPkg()) == pkgset.end())
+ continue;
+ provides.append(", ").append(Prv.Name());
+ }
+ if (provides.empty() == false)
+ fprintf(output, "Provides: %s\n", provides.c_str()+2);
+}
+ /*}}}*/
// EDSP::WriteRequest - to the given file descriptor /*{{{*/
bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
- bool const DistUpgrade, bool const AutoRemove)
+ bool const DistUpgrade, bool const AutoRemove,
+ OpProgress *Progress)
{
+ if (Progress != NULL)
+ Progress->SubProgress(Cache.Head().PackageCount, _("Send request to solver"));
+ unsigned long p = 0;
string del, inst;
- for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg, ++p)
{
+ if (Progress != NULL && p % 100 == 0)
+ Progress->Progress(p);
string* req;
- if (Cache[Pkg].Delete() == true)
+ pkgDepCache::StateCache &P = Cache[Pkg];
+ if (P.Delete() == true)
req = &del;
- else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
+ else if (P.NewInstall() == true || P.Upgrade() == true || P.ReInstall() == true ||
+ (P.Mode == pkgDepCache::ModeKeep && (P.iFlags & pkgDepCache::Protected) == pkgDepCache::Protected))
req = &inst;
else
continue;
req->append(" ").append(Pkg.FullName());
}
- fprintf(output, "Request: EDSP 0.2\n");
+ fprintf(output, "Request: EDSP 0.5\n");
+
+ const char *arch = _config->Find("APT::Architecture").c_str();
+ std::vector<string> archs = APT::Configuration::getArchitectures();
+ fprintf(output, "Architecture: %s\n", arch);
+ fprintf(output, "Architectures:");
+ for (std::vector<string>::const_iterator a = archs.begin(); a != archs.end(); ++a)
+ fprintf(output, " %s", a->c_str());
+ fprintf(output, "\n");
+
if (del.empty() == false)
fprintf(output, "Remove: %s\n", del.c_str()+1);
if (inst.empty() == false)
if (_config->FindB("APT::Solver::Strict-Pinning", true) == false)
fprintf(output, "Strict-Pinning: no\n");
string solverpref("APT::Solver::");
- solverpref.append(_config->Find("APT::Solver::Name", "internal")).append("::Preferences");
+ solverpref.append(_config->Find("APT::Solver", "internal")).append("::Preferences");
if (_config->Exists(solverpref) == true)
fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str());
fprintf(output, "\n");
}
/*}}}*/
// EDSP::ReadResponse - from the given file descriptor /*{{{*/
-bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) {
- FileFd in;
- in.OpenDescriptor(input, FileFd::ReadOnly);
- pkgTagFile response(&in);
- pkgTagSection section;
-
+bool EDSP::ReadResponse(int const input, pkgDepCache &Cache, OpProgress *Progress) {
/* We build an map id to mmap offset here
In theory we could use the offset as ID, but then VersionCount
couldn't be used to create other versionmappings anymore and it
would be too easy for a (buggy) solver to segfault APT… */
unsigned long long const VersionCount = Cache.Head().VersionCount;
unsigned long VerIdx[VersionCount];
- for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; ++P)
+ for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; ++P) {
for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
VerIdx[V->ID] = V.Index();
+ Cache[P].Marked = true;
+ Cache[P].Garbage = false;
+ }
+
+ FileFd in;
+ in.OpenDescriptor(input, FileFd::ReadOnly);
+ pkgTagFile response(&in, 100);
+ pkgTagSection section;
while (response.Step(section) == true) {
std::string type;
type = "Install";
else if (section.Exists("Remove") == true)
type = "Remove";
- //FIXME: handle progress
+ else if (section.Exists("Progress") == true) {
+ if (Progress != NULL) {
+ string msg = section.FindS("Message");
+ if (msg.empty() == true)
+ msg = _("Prepare for receiving solution");
+ Progress->SubProgress(100, msg, section.FindI("Percentage", 0));
+ }
+ continue;
+ } else if (section.Exists("Error") == true) {
+ std::string msg = SubstVar(SubstVar(section.FindS("Message"), "\n .\n", "\n\n"), "\n ", "\n");
+ if (msg.empty() == true) {
+ msg = _("External solver failed without a proper error message");
+ _error->Error("%s", msg.c_str());
+ } else
+ _error->Error("External solver failed with: %s", msg.substr(0,msg.find('\n')).c_str());
+ if (Progress != NULL)
+ Progress->Done();
+ std::cerr << "The solver encountered an error of type: " << section.FindS("Error") << std::endl;
+ std::cerr << "The following information might help you to understand what is wrong:" << std::endl;
+ std::cerr << msg << std::endl << std::endl;
+ return false;
+ } else if (section.Exists("Autoremove") == true)
+ type = "Autoremove";
else
continue;
pkgCache::VerIterator Ver(Cache.GetCache(), Cache.GetCache().VerP + VerIdx[id]);
Cache.SetCandidateVersion(Ver);
if (type == "Install")
- Cache.MarkInstall(Ver.ParentPkg(), false, false);
+ Cache.MarkInstall(Ver.ParentPkg(), false, 0, false);
else if (type == "Remove")
Cache.MarkDelete(Ver.ParentPkg(), false);
+ else if (type == "Autoremove") {
+ Cache[Ver.ParentPkg()].Marked = false;
+ Cache[Ver.ParentPkg()].Garbage = true;
+ }
}
return true;
}
distUpgrade = EDSP::StringToBool(line.c_str() + 14, false);
else if (line.compare(0, 11, "Autoremove:") == 0)
autoRemove = EDSP::StringToBool(line.c_str() + 12, false);
+ else if (line.compare(0, 13, "Architecture:") == 0)
+ _config->Set("APT::Architecture", line.c_str() + 14);
+ else if (line.compare(0, 14, "Architectures:") == 0)
+ {
+ std::string const archs = line.c_str() + 15;
+ _config->Set("APT::Architectures", SubstVar(archs, " ", ","));
+ }
else
_error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str());
pkgDepCache &Cache)
{
for (std::list<std::string>::const_iterator i = install.begin();
- i != install.end(); ++i)
- Cache.MarkInstall(Cache.FindPkg(*i), false);
+ i != install.end(); ++i) {
+ pkgCache::PkgIterator P = Cache.FindPkg(*i);
+ if (P.end() == true)
+ _error->Warning("Package %s is not known, so can't be installed", i->c_str());
+ else
+ Cache.MarkInstall(P, false);
+ }
for (std::list<std::string>::const_iterator i = remove.begin();
- i != remove.end(); ++i)
- Cache.MarkDelete(Cache.FindPkg(*i));
+ i != remove.end(); ++i) {
+ pkgCache::PkgIterator P = Cache.FindPkg(*i);
+ if (P.end() == true)
+ _error->Warning("Package %s is not known, so can't be installed", i->c_str());
+ else
+ Cache.MarkDelete(P);
+ }
return true;
}
/*}}}*/
for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
{
if (Cache[Pkg].Delete() == true)
- fprintf(output, "Remove: %d\n", Cache.GetCandidateVer(Pkg)->ID);
+ {
+ fprintf(output, "Remove: %d\n", Pkg.CurrentVer()->ID);
+ if (Debug == true)
+ fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Pkg.CurrentVer().VerStr());
+ }
else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
+ {
fprintf(output, "Install: %d\n", Cache.GetCandidateVer(Pkg)->ID);
+ if (Debug == true)
+ fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr());
+ }
+ else if (Cache[Pkg].Garbage == true)
+ {
+ fprintf(output, "Autoremove: %d\n", Pkg.CurrentVer()->ID);
+ if (Debug == true)
+ fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Pkg.CurrentVer().VerStr());
+ }
else
continue;
- if (Debug == true)
- fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr());
fprintf(output, "\n");
}
return true;
}
/*}}}*/
-bool EDSP::WriteError(std::string const &message, FILE* output) { return false; }
+// EDSP::WriteProgess - pulse to the given file descriptor /*{{{*/
+bool EDSP::WriteProgress(unsigned short const percent, const char* const message, FILE* output) {
+ fprintf(output, "Progress: %s\n", TimeRFC1123(time(NULL)).c_str());
+ fprintf(output, "Percentage: %d\n", percent);
+ fprintf(output, "Message: %s\n\n", message);
+ fflush(output);
+ return true;
+}
+ /*}}}*/
+// EDSP::WriteError - format an error message to be send to file descriptor /*{{{*/
+bool EDSP::WriteError(char const * const uuid, std::string const &message, FILE* output) {
+ fprintf(output, "Error: %s\n", uuid);
+ fprintf(output, "Message: %s\n\n", SubstVar(SubstVar(message, "\n\n", "\n.\n"), "\n", "\n ").c_str());
+ return true;
+}
+ /*}}}*/
+// EDSP::ExecuteSolver - fork requested solver and setup ipc pipes {{{*/
+pid_t EDSP::ExecuteSolver(const char* const solver, int * const solver_in, int * const solver_out, bool) {
+ std::vector<std::string> const solverDirs = _config->FindVector("Dir::Bin::Solvers");
+ std::string file;
+ for (std::vector<std::string>::const_iterator dir = solverDirs.begin();
+ dir != solverDirs.end(); ++dir) {
+ file = flCombine(*dir, solver);
+ if (RealFileExists(file.c_str()) == true)
+ break;
+ file.clear();
+ }
+
+ if (file.empty() == true)
+ {
+ _error->Error("Can't call external solver '%s' as it is not in a configured directory!", solver);
+ return 0;
+ }
+ int external[4] = {-1, -1, -1, -1};
+ if (pipe(external) != 0 || pipe(external + 2) != 0)
+ {
+ _error->Errno("Resolve", "Can't create needed IPC pipes for EDSP");
+ return 0;
+ }
+ for (int i = 0; i < 4; ++i)
+ SetCloseExec(external[i], true);
+
+ pid_t Solver = ExecFork();
+ if (Solver == 0) {
+ dup2(external[0], STDIN_FILENO);
+ dup2(external[3], STDOUT_FILENO);
+ const char* calling[2] = { file.c_str(), 0 };
+ execv(calling[0], (char**) calling);
+ std::cerr << "Failed to execute solver '" << solver << "'!" << std::endl;
+ _exit(100);
+ }
+ close(external[0]);
+ close(external[3]);
+
+ if (WaitFd(external[1], true, 5) == false)
+ {
+ _error->Errno("Resolve", "Timed out while Waiting on availability of solver stdin");
+ return 0;
+ }
+
+ *solver_in = external[1];
+ *solver_out = external[2];
+ return Solver;
+}
+bool EDSP::ExecuteSolver(const char* const solver, int *solver_in, int *solver_out) {
+ if (ExecuteSolver(solver, solver_in, solver_out, true) == 0)
+ return false;
+ return true;
+}
+ /*}}}*/
+// EDSP::ResolveExternal - resolve problems by asking external for help {{{*/
+bool EDSP::ResolveExternal(const char* const solver, pkgDepCache &Cache,
+ bool const upgrade, bool const distUpgrade,
+ bool const autoRemove, OpProgress *Progress) {
+ int solver_in, solver_out;
+ pid_t const solver_pid = EDSP::ExecuteSolver(solver, &solver_in, &solver_out, true);
+ if (solver_pid == 0)
+ return false;
+
+ FILE* output = fdopen(solver_in, "w");
+ if (output == NULL)
+ return _error->Errno("Resolve", "fdopen on solver stdin failed");
+
+ if (Progress != NULL)
+ Progress->OverallProgress(0, 100, 5, _("Execute external solver"));
+ EDSP::WriteRequest(Cache, output, upgrade, distUpgrade, autoRemove, Progress);
+ if (Progress != NULL)
+ Progress->OverallProgress(5, 100, 20, _("Execute external solver"));
+ EDSP::WriteScenario(Cache, output, Progress);
+ fclose(output);
+
+ if (Progress != NULL)
+ Progress->OverallProgress(25, 100, 75, _("Execute external solver"));
+ if (EDSP::ReadResponse(solver_out, Cache, Progress) == false)
+ return false;
+
+ return ExecWait(solver_pid, solver);
+}
+ /*}}}*/
projects / apt.git / blobdiff