diff options
| -rw-r--r-- | apt-pkg/algorithms.cc | 42 | ||||
| -rw-r--r-- | apt-pkg/edsp.cc | 28 | ||||
| -rw-r--r-- | apt-pkg/edsp.h | 2 |
3 files changed, 62 insertions, 10 deletions
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc index aabb511a2..bbe315ef7 100644 --- a/apt-pkg/algorithms.cc +++ b/apt-pkg/algorithms.cc @@ -740,18 +740,46 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg) bool pkgProblemResolver::Resolve(bool BrokenFix) { std::string const solver = _config->Find("APT::Solver::Name", "internal"); + if (solver != "internal") { - FILE* output = fopen("/tmp/scenario.log", "w"); +// std::string const file = _config->FindDir("Dir::Bin::Solvers") + solver; + std::string const file = solver; + if (RealFileExists(file.c_str()) == false) + return _error->Error("Can't call external solver '%s' as it is not available: %s", solver.c_str(), file.c_str()); + int external[4] = {-1, -1, -1, -1}; + if (pipe(external) != 0 || pipe(external + 2) != 0) + return _error->Errno("Resolve", "Can't create needed IPC pipes for EDSP"); + 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) + return _error->Errno("Resolve", "Waiting on availability of solver stdin timed out"); + + FILE* output = fdopen(external[1], "w"); + if (output == NULL) + return _error->Errno("Resolve", "fdopen on solver stdin failed"); EDSP::WriteRequest(Cache, output); EDSP::WriteScenario(Cache, output); fclose(output); - if (ResolveInternal(BrokenFix) == false) - return false; - output = fopen("/tmp/solution.log", "w"); - EDSP::WriteSolution(Cache, output); - fclose(output); - return true; + + if (EDSP::ReadResponse(external[2], Cache) == false) + return _error->Error("Reading solver response failed"); + + return ExecWait(Solver, solver.c_str(), false); } return ResolveInternal(BrokenFix); } diff --git a/apt-pkg/edsp.cc b/apt-pkg/edsp.cc index d93b05411..e6dc16536 100644 --- a/apt-pkg/edsp.cc +++ b/apt-pkg/edsp.cc @@ -10,6 +10,7 @@ #include <apt-pkg/configuration.h> #include <apt-pkg/version.h> #include <apt-pkg/policy.h> +#include <apt-pkg/tagfile.h> #include <apti18n.h> #include <limits> @@ -139,14 +140,37 @@ bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade, return true; } /*}}}*/ -bool EDSP::ReadResponse(FILE* input, pkgDepCache &Cache) { return false; } +// 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; + while (response.Step(section) == true) { + std::string type; + if (section.Exists("Install") == true) + type = "Install"; + else if (section.Exists("Remove") == true) + type = "Remove"; + //FIXME: handle progress + else + continue; + + int const id = section.FindI(type.c_str(), -1); + if (id == -1) + return _error->Error("Unable to parse %s request!", type.c_str()); + //FIXME: find version by id and mark it correctly + } + return true; +} + /*}}}*/ // EDSP::ReadLine - first line from the given file descriptor /*{{{*/ // --------------------------------------------------------------------- /* Little helper method to read a complete line into a string. Similar to fgets but we need to use the low-level read() here as otherwise the listparser will be confused later on as mixing of fgets and read isn't - a supported action according to the manpages and result are undefined */ + a supported action according to the manpages and results are undefined */ bool EDSP::ReadLine(int const input, std::string &line) { char one; ssize_t data = 0; diff --git a/apt-pkg/edsp.h b/apt-pkg/edsp.h index 75733c2d2..31f8891f3 100644 --- a/apt-pkg/edsp.h +++ b/apt-pkg/edsp.h @@ -22,7 +22,7 @@ public: bool const distUpgrade = false, bool const autoRemove = false); bool static WriteScenario(pkgDepCache &Cache, FILE* output); - bool static ReadResponse(FILE* input, pkgDepCache &Cache); + bool static ReadResponse(int const input, pkgDepCache &Cache); // ReadScenario is provided by the listparser infrastructure bool static ReadRequest(int const input, std::list<std::string> &install, |