diff options
Diffstat (limited to 'apt-pkg/deb')
| -rw-r--r-- | apt-pkg/deb/dpkgpm.cc | 213 | ||||
| -rw-r--r-- | apt-pkg/deb/dpkgpm.h | 9 |
2 files changed, 195 insertions, 27 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc index 61c48dcbb..2e85fc14e 100644 --- a/apt-pkg/deb/dpkgpm.cc +++ b/apt-pkg/deb/dpkgpm.cc @@ -25,7 +25,11 @@ #include <signal.h> #include <errno.h> #include <stdio.h> -#include <iostream> +#include <sstream> +#include <map> + +#include <config.h> +#include <apti18n.h> /*}}}*/ using namespace std; @@ -325,8 +329,14 @@ bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf) /*}}}*/ // DPkgPM::Go - Run the sequence /*{{{*/ // --------------------------------------------------------------------- -/* This globs the operations and calls dpkg */ -bool pkgDPkgPM::Go(int status_fd) +/* This globs the operations and calls dpkg + * + * If it is called with "OutStatusFd" set to a valid file descriptor + * apt will report the install progress over this fd. It maps the + * dpkg states a package goes through to human readable (and i10n-able) + * names and calculates a percentage for each step. +*/ +bool pkgDPkgPM::Go(int OutStatusFd) { unsigned int MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024); unsigned int MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024); @@ -336,7 +346,66 @@ bool pkgDPkgPM::Go(int status_fd) if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false) return false; + + // prepare the progress reporting + int Done = 0; + int Total = 0; + // map the dpkg states to the operations that are performed + // (this is sorted in the same way as Item::Ops) + static const struct DpkgState DpkgStatesOpMap[][5] = { + // Install operation + { + {"half-installed", _("Preparing %s")}, + {"unpacked", _("Unpacking %s") }, + NULL + }, + // Configure operation + { + {"unpacked",_("Preparing to configure %s") }, + {"half-configured", _("Configuring %s") }, + { "installed", _("Installed %s")}, + NULL + }, + // Remove operation + { + {"half-configured", _("Preparing for removal of %s")}, + {"half-installed", _("Removing %s")}, + {"config-files", _("Removed %s")}, + NULL + }, + // Purge operation + { + {"config-files", _("Preparing for remove with config %s")}, + {"not-installed", _("Removed with config %s")}, + NULL + }, + }; + + // the dpkg states that the pkg will run through, the string is + // the package, the vector contains the dpkg states that the package + // will go through + map<string,vector<struct DpkgState> > PackageOps; + // the dpkg states that are already done; the string is the package + // the int is the state that is already done (e.g. a package that is + // going to be install is already in state "half-installed") + map<string,int> PackageOpsDone; + // init the PackageOps map, go over the list of packages that + // that will be [installed|configured|removed|purged] and add + // them to the PackageOps map (the dpkg states it goes through) + // and the PackageOpsTranslations (human readable strings) + for (vector<Item>::iterator I = List.begin(); I != List.end();I++) + { + string name = (*I).Pkg.Name(); + PackageOpsDone[name] = 0; + for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; i++) + { + PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]); + Total++; + } + } + + // this loop is runs once per operation for (vector<Item>::iterator I = List.begin(); I != List.end();) { vector<Item>::iterator J = I; @@ -367,16 +436,15 @@ bool pkgDPkgPM::Go(int status_fd) } } - // if we got a status_fd argument, we pass it to apt char status_fd_buf[20]; - if(status_fd > 0) - { - Args[n++] = "--status-fd"; - Size += strlen(Args[n-1]); - snprintf(status_fd_buf,20,"%i",status_fd); - Args[n++] = status_fd_buf; - Size += strlen(Args[n-1]); - } + int fd[2]; + pipe(fd); + + Args[n++] = "--status-fd"; + Size += strlen(Args[n-1]); + snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]); + Args[n++] = status_fd_buf; + Size += strlen(Args[n-1]); switch (I->Op) { @@ -449,17 +517,17 @@ bool pkgDPkgPM::Go(int status_fd) it doesn't die but we do! So we must also ignore it */ sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN); sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN); - - // Fork dpkg + + // Fork dpkg pid_t Child; - if(status_fd > 0) - Child = ExecFork(status_fd); - else - Child = ExecFork(); + _config->Set("APT::Keep-Fds::",fd[1]); + Child = ExecFork(); // This is the child if (Child == 0) { + close(fd[0]); // close the read end of the pipe + if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0) _exit(100); @@ -487,19 +555,112 @@ bool pkgDPkgPM::Go(int status_fd) _exit(100); } + // clear the Keep-Fd again + _config->Clear("APT::Keep-Fds",fd[1]); + // Wait for dpkg int Status = 0; - while (waitpid(Child,&Status,0) != Child) - { - if (errno == EINTR) + + // we read from dpkg here + int _dpkgin = fd[0]; + fcntl(_dpkgin, F_SETFL, O_NONBLOCK); + close(fd[1]); // close the write end of the pipe + + // the read buffers for the communication with dpkg + char line[1024] = {0,}; + char buf[2] = {0,0}; + + // the result of the waitpid call + int res; + + while ((res=waitpid(Child,&Status, WNOHANG)) != Child) { + if(res < 0) { + // FIXME: move this to a function or something, looks ugly here + // error handling, waitpid returned -1 + if (errno == EINTR) + continue; + RunScripts("DPkg::Post-Invoke"); + + // Restore sig int/quit + signal(SIGQUIT,old_SIGQUIT); + signal(SIGINT,old_SIGINT); + return _error->Errno("waitpid","Couldn't wait for subprocess"); + } + + // read a single char, make sure that the read can't block + // (otherwise we may leave zombies) + int len = read(_dpkgin, buf, 1); + + // nothing to read, wait a bit for more + if(len <= 0) + { + usleep(1000); continue; - RunScripts("DPkg::Post-Invoke"); + } + + // sanity check (should never happen) + if(strlen(line) >= sizeof(line)-10) + { + _error->Error("got a overlong line from dpkg: '%s'",line); + line[0]=0; + } + // append to line, check if we got a complete line + strcat(line, buf); + if(buf[0] != '\n') + continue; + + if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true) + std::clog << "got from dpkg '" << line << "'" << std::endl; + + // pass "error" and "conffile-prompt" messages from dpkg verbatim + if((strncmp(line,"error",strlen("error")) == 0) || + (strncmp(line,"conffile-prompt",strlen("conffile-prompt")) == 0)) + { + write(OutStatusFd, line, strlen(line)); + line[0]=0; + continue; + } + // line contains the dpkg status info now. it has the form: + // 'status: <pkg>: <pkg qstate>' (see dpkg(1) for details) + char* list[5]; + TokSplitString(':', line, list, 5); + char *pkg = list[1]; + char *action = list[2]; + vector<struct DpkgState> &states = PackageOps[pkg]; + const char *next_action = states[PackageOpsDone[pkg]].state; + const char *translation = states[PackageOpsDone[pkg]].str; + char s[200]; + snprintf(s, sizeof(s), translation, pkg); + // check if the package moved to the next dpkg state + if(next_action && (strcmp(action, next_action) == 0)) + { + // we moved from one dpkg state to a new one, report that + PackageOpsDone[pkg]++; + Done++; + ostringstream status; + // build the status str + status << "pmstatus:" << pkg + << ":" << (Done/float(Total)*100.0) + << ":" << s + << endl; + if(OutStatusFd > 0) + write(OutStatusFd, status.str().c_str(), status.str().size()); + if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true) + { + std::clog << "send to fd: '" << status.str() + << "'" << std::endl; + + } + + } + if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true) + std::clog << "(parsed from dpkg) pkg: " << pkg + << " action: " << action << endl; - // Restore sig int/quit - signal(SIGQUIT,old_SIGQUIT); - signal(SIGINT,old_SIGINT); - return _error->Errno("waitpid","Couldn't wait for subprocess"); + // reset the line buffer + line[0]=0; } + close(_dpkgin); // Restore sig int/quit signal(SIGQUIT,old_SIGQUIT); diff --git a/apt-pkg/deb/dpkgpm.h b/apt-pkg/deb/dpkgpm.h index b59b9dc93..2ff8a9ac7 100644 --- a/apt-pkg/deb/dpkgpm.h +++ b/apt-pkg/deb/dpkgpm.h @@ -23,6 +23,13 @@ using std::vector; class pkgDPkgPM : public pkgPackageManager { protected: + + // used for progress reporting + struct DpkgState + { + const char *state; // the dpkg state (e.g. "unpack") + const char *str; // the human readable translation of the state + }; struct Item { @@ -45,7 +52,7 @@ class pkgDPkgPM : public pkgPackageManager virtual bool Install(PkgIterator Pkg,string File); virtual bool Configure(PkgIterator Pkg); virtual bool Remove(PkgIterator Pkg,bool Purge = false); - virtual bool Go(int status_fd=-1); + virtual bool Go(int StatusFd=-1); virtual void Reset(); public: |