##################################################################### */
/*}}}*/
// Includes /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/dpkgpm.h"
-#endif
#include <apt-pkg/dpkgpm.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/strutl.h>
+#include <apti18n.h>
+#include <apt-pkg/fileutl.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
+#include <sys/select.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <errno.h>
#include <stdio.h>
+#include <string.h>
+#include <algorithm>
#include <sstream>
#include <map>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <pty.h>
+
#include <config.h>
#include <apti18n.h>
/*}}}*/
using namespace std;
+namespace
+{
+ // Maps the dpkg "processing" info to human readable names. Entry 0
+ // of each array is the key, entry 1 is the value.
+ const std::pair<const char *, const char *> PackageProcessingOps[] = {
+ std::make_pair("install", N_("Installing %s")),
+ std::make_pair("configure", N_("Configuring %s")),
+ std::make_pair("remove", N_("Removing %s")),
+ std::make_pair("purge", N_("Completely removing %s")),
+ std::make_pair("trigproc", N_("Running post-installation trigger %s"))
+ };
+
+ const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
+ const std::pair<const char *, const char *> * const PackageProcessingOpsEnd = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
+
+ // Predicate to test whether an entry in the PackageProcessingOps
+ // array matches a string.
+ class MatchProcessingOp
+ {
+ const char *target;
+
+ public:
+ MatchProcessingOp(const char *the_target)
+ : target(the_target)
+ {
+ }
+
+ bool operator()(const std::pair<const char *, const char *> &pair) const
+ {
+ return strcmp(pair.first, target) == 0;
+ }
+ };
+}
+
+/* helper function to ionice the given PID
+
+ there is no C header for ionice yet - just the syscall interface
+ so we use the binary from util-linux
+*/
+static bool
+ionice(int PID)
+{
+ if (!FileExists("/usr/bin/ionice"))
+ return false;
+ pid_t Process = ExecFork();
+ if (Process == 0)
+ {
+ char buf[32];
+ snprintf(buf, sizeof(buf), "-p%d", PID);
+ const char *Args[4];
+ Args[0] = "/usr/bin/ionice";
+ Args[1] = "-c3";
+ Args[2] = buf;
+ Args[3] = 0;
+ execv(Args[0], (char **)Args);
+ }
+ return ExecWait(Process, "ionice");
+}
+
// DPkgPM::pkgDPkgPM - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
-pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache) : pkgPackageManager(Cache)
+pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
+ : pkgPackageManager(Cache), dpkgbuf_pos(0),
+ term_out(NULL), PackagesDone(0), PackagesTotal(0)
{
}
/*}}}*/
{
if (Pkg.end() == true)
return false;
-
- List.push_back(Item(Item::Configure,Pkg));
+
+ List.push_back(Item(Item::Configure, Pkg));
+
+ // Use triggers for config calls if we configure "smart"
+ // as otherwise Pre-Depends will not be satisfied, see #526774
+ if (_config->FindB("DPkg::TriggersPending", false) == true)
+ List.push_back(Item(Item::TriggersPending, PkgIterator()));
+
return true;
}
/*}}}*/
return true;
}
/*}}}*/
-// DPkgPM::RunScripts - Run a set of scripts /*{{{*/
-// ---------------------------------------------------------------------
-/* This looks for a list of script sto run from the configuration file,
- each one is run with system from a forked child. */
-bool pkgDPkgPM::RunScripts(const char *Cnf)
-{
- Configuration::Item const *Opts = _config->Tree(Cnf);
- if (Opts == 0 || Opts->Child == 0)
- return true;
- Opts = Opts->Child;
-
- // Fork for running the system calls
- pid_t Child = ExecFork();
-
- // This is the child
- if (Child == 0)
- {
- if (chdir("/tmp/") != 0)
- _exit(100);
-
- unsigned int Count = 1;
- for (; Opts != 0; Opts = Opts->Next, Count++)
- {
- if (Opts->Value.empty() == true)
- continue;
-
- if (system(Opts->Value.c_str()) != 0)
- _exit(100+Count);
- }
- _exit(0);
- }
-
- // Wait for the child
- int Status = 0;
- while (waitpid(Child,&Status,0) != Child)
- {
- if (errno == EINTR)
- continue;
- return _error->Errno("waitpid","Couldn't wait for subprocess");
- }
-
- // Restore sig int/quit
- signal(SIGQUIT,SIG_DFL);
- signal(SIGINT,SIG_DFL);
-
- // Check for an error code.
- if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
- {
- unsigned int Count = WEXITSTATUS(Status);
- if (Count > 100)
- {
- Count -= 100;
- for (; Opts != 0 && Count != 1; Opts = Opts->Next, Count--);
- _error->Error("Problem executing scripts %s '%s'",Cnf,Opts->Value.c_str());
- }
-
- return _error->Error("Sub-process returned an error code");
- }
-
- return true;
-}
- /*}}}*/
// DPkgPM::SendV2Pkgs - Send version 2 package info /*{{{*/
// ---------------------------------------------------------------------
/* This is part of the helper script communication interface, it sends
// Write out the package actions in order.
for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
{
+ if(I->Pkg.end() == true)
+ continue;
+
pkgDepCache::StateCache &S = Cache[I->Pkg];
fprintf(F,"%s ",I->Pkg.Name());
return _error->Error("Failure running script %s",Opts->Value.c_str());
}
+ return true;
+}
+
+ /*}}}*/
+// DPkgPM::DoStdin - Read stdin and pass to slave pty /*{{{*/
+// ---------------------------------------------------------------------
+/*
+*/
+void pkgDPkgPM::DoStdin(int master)
+{
+ unsigned char input_buf[256] = {0,};
+ ssize_t len = read(0, input_buf, sizeof(input_buf));
+ if (len)
+ write(master, input_buf, len);
+ else
+ stdin_is_dev_null = true;
+}
+ /*}}}*/
+// DPkgPM::DoTerminalPty - Read the terminal pty and write log /*{{{*/
+// ---------------------------------------------------------------------
+/*
+ * read the terminal pty and write log
+ */
+void pkgDPkgPM::DoTerminalPty(int master)
+{
+ unsigned char term_buf[1024] = {0,0, };
+
+ ssize_t len=read(master, term_buf, sizeof(term_buf));
+ if(len == -1 && errno == EIO)
+ {
+ // this happens when the child is about to exit, we
+ // give it time to actually exit, otherwise we run
+ // into a race
+ usleep(500000);
+ return;
+ }
+ if(len <= 0)
+ return;
+ write(1, term_buf, len);
+ if(term_out)
+ fwrite(term_buf, len, sizeof(char), term_out);
+}
+ /*}}}*/
+// DPkgPM::ProcessDpkgStatusBuf /*{{{*/
+// ---------------------------------------------------------------------
+/*
+ */
+void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
+{
+ bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
+ // the status we output
+ ostringstream status;
+
+ if (Debug == true)
+ std::clog << "got from dpkg '" << line << "'" << std::endl;
+
+
+ /* dpkg sends strings like this:
+ 'status: <pkg>: <pkg qstate>'
+ errors look like this:
+ 'status: /var/cache/apt/archives/krecipes_0.8.1-0ubuntu1_i386.deb : error : trying to overwrite `/usr/share/doc/kde/HTML/en/krecipes/krectip.png', which is also in package krecipes-data
+ and conffile-prompt like this
+ 'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
+
+ Newer versions of dpkg sent also:
+ 'processing: install: pkg'
+ 'processing: configure: pkg'
+ 'processing: remove: pkg'
+ 'processing: purge: pkg' - but for apt is it a ignored "unknown" action
+ 'processing: trigproc: trigger'
+
+ */
+ char* list[5];
+ // dpkg sends multiline error messages sometimes (see
+ // #374195 for a example. we should support this by
+ // either patching dpkg to not send multiline over the
+ // statusfd or by rewriting the code here to deal with
+ // it. for now we just ignore it and not crash
+ TokSplitString(':', line, list, sizeof(list)/sizeof(list[0]));
+ if( list[0] == NULL || list[1] == NULL || list[2] == NULL)
+ {
+ if (Debug == true)
+ std::clog << "ignoring line: not enough ':'" << std::endl;
+ return;
+ }
+ const char* const pkg = list[1];
+ const char* action = _strstrip(list[2]);
+
+ // 'processing' from dpkg looks like
+ // 'processing: action: pkg'
+ if(strncmp(list[0], "processing", strlen("processing")) == 0)
+ {
+ char s[200];
+ const char* const pkg_or_trigger = _strstrip(list[2]);
+ action = _strstrip( list[1]);
+ const std::pair<const char *, const char *> * const iter =
+ std::find_if(PackageProcessingOpsBegin,
+ PackageProcessingOpsEnd,
+ MatchProcessingOp(action));
+ if(iter == PackageProcessingOpsEnd)
+ {
+ if (Debug == true)
+ std::clog << "ignoring unknown action: " << action << std::endl;
+ return;
+ }
+ snprintf(s, sizeof(s), _(iter->second), pkg_or_trigger);
+
+ status << "pmstatus:" << pkg_or_trigger
+ << ":" << (PackagesDone/float(PackagesTotal)*100.0)
+ << ":" << s
+ << endl;
+ if(OutStatusFd > 0)
+ write(OutStatusFd, status.str().c_str(), status.str().size());
+ if (Debug == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ return;
+ }
+
+ if(strncmp(action,"error",strlen("error")) == 0)
+ {
+ status << "pmerror:" << list[1]
+ << ":" << (PackagesDone/float(PackagesTotal)*100.0)
+ << ":" << list[3]
+ << endl;
+ if(OutStatusFd > 0)
+ write(OutStatusFd, status.str().c_str(), status.str().size());
+ if (Debug == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ return;
+ }
+ else if(strncmp(action,"conffile",strlen("conffile")) == 0)
+ {
+ status << "pmconffile:" << list[1]
+ << ":" << (PackagesDone/float(PackagesTotal)*100.0)
+ << ":" << list[3]
+ << endl;
+ if(OutStatusFd > 0)
+ write(OutStatusFd, status.str().c_str(), status.str().size());
+ if (Debug == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ return;
+ }
+
+ vector<struct DpkgState> const &states = PackageOps[pkg];
+ const char *next_action = NULL;
+ if(PackageOpsDone[pkg] < states.size())
+ next_action = states[PackageOpsDone[pkg]].state;
+ // check if the package moved to the next dpkg state
+ if(next_action && (strcmp(action, next_action) == 0))
+ {
+ // only read the translation if there is actually a next
+ // action
+ const char *translation = _(states[PackageOpsDone[pkg]].str);
+ char s[200];
+ snprintf(s, sizeof(s), translation, pkg);
+
+ // we moved from one dpkg state to a new one, report that
+ PackageOpsDone[pkg]++;
+ PackagesDone++;
+ // build the status str
+ status << "pmstatus:" << pkg
+ << ":" << (PackagesDone/float(PackagesTotal)*100.0)
+ << ":" << s
+ << endl;
+ if(OutStatusFd > 0)
+ write(OutStatusFd, status.str().c_str(), status.str().size());
+ if (Debug == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ }
+ if (Debug == true)
+ std::clog << "(parsed from dpkg) pkg: " << pkg
+ << " action: " << action << endl;
+}
+ /*}}}*/
+// DPkgPM::DoDpkgStatusFd /*{{{*/
+// ---------------------------------------------------------------------
+/*
+ */
+void pkgDPkgPM::DoDpkgStatusFd(int statusfd, int OutStatusFd)
+{
+ char *p, *q;
+ int len;
+
+ len=read(statusfd, &dpkgbuf[dpkgbuf_pos], sizeof(dpkgbuf)-dpkgbuf_pos);
+ dpkgbuf_pos += len;
+ if(len <= 0)
+ return;
+
+ // process line by line if we have a buffer
+ p = q = dpkgbuf;
+ while((q=(char*)memchr(p, '\n', dpkgbuf+dpkgbuf_pos-p)) != NULL)
+ {
+ *q = 0;
+ ProcessDpkgStatusLine(OutStatusFd, p);
+ p=q+1; // continue with next line
+ }
+
+ // now move the unprocessed bits (after the final \n that is now a 0x0)
+ // to the start and update dpkgbuf_pos
+ p = (char*)memrchr(dpkgbuf, 0, dpkgbuf_pos);
+ if(p == NULL)
+ return;
+
+ // we are interessted in the first char *after* 0x0
+ p++;
+
+ // move the unprocessed tail to the start and update pos
+ memmove(dpkgbuf, p, p-dpkgbuf);
+ dpkgbuf_pos = dpkgbuf+dpkgbuf_pos-p;
+}
+ /*}}}*/
+// DPkgPM::WriteHistoryTag /*{{{*/
+void pkgDPkgPM::WriteHistoryTag(string tag, string value)
+{
+ if (value.size() > 0)
+ {
+ // poor mans rstrip(", ")
+ if (value[value.size()-2] == ',' && value[value.size()-1] == ' ')
+ value.erase(value.size() - 2, 2);
+ fprintf(history_out, "%s: %s\n", tag.c_str(), value.c_str());
+ }
+} /*}}}*/
+// DPkgPM::OpenLog /*{{{*/
+bool pkgDPkgPM::OpenLog()
+{
+ string logdir = _config->FindDir("Dir::Log");
+ if(not FileExists(logdir))
+ return _error->Error(_("Directory '%s' missing"), logdir.c_str());
+
+ // get current time
+ char timestr[200];
+ time_t t = time(NULL);
+ struct tm *tmp = localtime(&t);
+ strftime(timestr, sizeof(timestr), "%F %T", tmp);
+
+ // open terminal log
+ string logfile_name = flCombine(logdir,
+ _config->Find("Dir::Log::Terminal"));
+ if (!logfile_name.empty())
+ {
+ term_out = fopen(logfile_name.c_str(),"a");
+ if (term_out == NULL)
+ return _error->WarningE(_("Could not open file '%s'"), logfile_name.c_str());
+
+ chmod(logfile_name.c_str(), 0600);
+ fprintf(term_out, "\nLog started: %s\n", timestr);
+ }
+
+ // write
+ string history_name = flCombine(logdir,
+ _config->Find("Dir::Log::History"));
+ if (!history_name.empty())
+ {
+ history_out = fopen(history_name.c_str(),"a");
+ chmod(history_name.c_str(), 0644);
+ fprintf(history_out, "\nStart-Date: %s\n", timestr);
+ string remove, purge, install, upgrade, downgrade;
+ for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+ {
+ if (Cache[I].NewInstall())
+ install += I.Name() + string(" (") + Cache[I].CandVersion + string("), ");
+ else if (Cache[I].Upgrade())
+ upgrade += I.Name() + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
+ else if (Cache[I].Downgrade())
+ downgrade += I.Name() + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
+ else if (Cache[I].Delete())
+ {
+ if ((Cache[I].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge)
+ purge += I.Name() + string(" (") + Cache[I].CurVersion + string("), ");
+ else
+ remove += I.Name() + string(" (") + Cache[I].CurVersion + string("), ");
+ }
+ }
+ WriteHistoryTag("Install", install);
+ WriteHistoryTag("Upgrade", upgrade);
+ WriteHistoryTag("Downgrade",downgrade);
+ WriteHistoryTag("Remove",remove);
+ WriteHistoryTag("Purge",purge);
+ fflush(history_out);
+ }
+
return true;
}
/*}}}*/
+// DPkg::CloseLog /*{{{*/
+bool pkgDPkgPM::CloseLog()
+{
+ char timestr[200];
+ time_t t = time(NULL);
+ struct tm *tmp = localtime(&t);
+ strftime(timestr, sizeof(timestr), "%F %T", tmp);
+
+ if(term_out)
+ {
+ fprintf(term_out, "Log ended: ");
+ fprintf(term_out, "%s", timestr);
+ fprintf(term_out, "\n");
+ fclose(term_out);
+ }
+ term_out = NULL;
+
+ if(history_out)
+ {
+ if (dpkg_error.size() > 0)
+ fprintf(history_out, "Error: %s\n", dpkg_error.c_str());
+ fprintf(history_out, "End-Date: %s\n", timestr);
+ fclose(history_out);
+ }
+
+ return true;
+}
+ /*}}}*/
+/*{{{*/
+// This implements a racy version of pselect for those architectures
+// that don't have a working implementation.
+// FIXME: Probably can be removed on Lenny+1
+static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
+ fd_set *exceptfds, const struct timespec *timeout,
+ const sigset_t *sigmask)
+{
+ sigset_t origmask;
+ struct timeval tv;
+ int retval;
+
+ tv.tv_sec = timeout->tv_sec;
+ tv.tv_usec = timeout->tv_nsec/1000;
+
+ sigprocmask(SIG_SETMASK, sigmask, &origmask);
+ retval = select(nfds, readfds, writefds, exceptfds, &tv);
+ sigprocmask(SIG_SETMASK, &origmask, 0);
+ return retval;
+}
+/*}}}*/
// DPkgPM::Go - Run the sequence /*{{{*/
// ---------------------------------------------------------------------
/* This globs the operations and calls dpkg
*/
bool pkgDPkgPM::Go(int OutStatusFd)
{
- unsigned int MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
- unsigned int MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
+ fd_set rfds;
+ struct timespec tv;
+ sigset_t sigmask;
+ sigset_t original_sigmask;
+
+ unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
+ unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
+ bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
if (RunScripts("DPkg::Pre-Invoke") == false)
return false;
if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
return false;
-
- // prepare the progress reporting
- int Done = 0;
- int Total = 0;
+
+ // support subpressing of triggers processing for special
+ // cases like d-i that runs the triggers handling manually
+ bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
+ bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
+ if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
+ List.push_back(Item(Item::ConfigurePending, PkgIterator()));
+
// 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] = {
+ static const struct DpkgState DpkgStatesOpMap[][7] = {
// Install operation
{
{"half-installed", N_("Preparing %s")},
},
};
- // 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++)
+ for (vector<Item>::const_iterator I = List.begin(); I != List.end();I++)
{
- string name = (*I).Pkg.Name();
+ if((*I).Pkg.end() == true)
+ continue;
+
+ string const 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++;
+ PackagesTotal++;
}
- }
+ }
+
+ stdin_is_dev_null = false;
+
+ // create log
+ OpenLog();
// this loop is runs once per operation
- for (vector<Item>::iterator I = List.begin(); I != List.end();)
+ for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
{
- vector<Item>::iterator J = I;
- for (; J != List.end() && J->Op == I->Op; J++);
+ // Do all actions with the same Op in one run
+ vector<Item>::const_iterator J = I;
+ if (TriggersPending == true)
+ for (; J != List.end(); J++)
+ {
+ if (J->Op == I->Op)
+ continue;
+ if (J->Op != Item::TriggersPending)
+ break;
+ vector<Item>::const_iterator T = J + 1;
+ if (T != List.end() && T->Op == I->Op)
+ continue;
+ break;
+ }
+ else
+ for (; J != List.end() && J->Op == I->Op; J++)
+ /* nothing */;
// Generate the argument list
const char *Args[MaxArgs + 50];
+
+ // Now check if we are within the MaxArgs limit
+ //
+ // this code below is problematic, because it may happen that
+ // the argument list is split in a way that A depends on B
+ // and they are in the same "--configure A B" run
+ // - with the split they may now be configured in different
+ // runs
if (J - I > (signed)MaxArgs)
J = I + MaxArgs;
unsigned int n = 0;
unsigned long Size = 0;
- string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
+ string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
Args[n++] = Tmp.c_str();
Size += strlen(Args[n-1]);
Args[n++] = "--configure";
Size += strlen(Args[n-1]);
break;
-
+
+ case Item::ConfigurePending:
+ Args[n++] = "--configure";
+ Size += strlen(Args[n-1]);
+ Args[n++] = "--pending";
+ Size += strlen(Args[n-1]);
+ break;
+
+ case Item::TriggersPending:
+ Args[n++] = "--triggers-only";
+ Size += strlen(Args[n-1]);
+ Args[n++] = "--pending";
+ Size += strlen(Args[n-1]);
+ break;
+
case Item::Install:
Args[n++] = "--unpack";
Size += strlen(Args[n-1]);
Size += strlen(Args[n-1]);
break;
}
-
+
+ if (NoTriggers == true && I->Op != Item::TriggersPending &&
+ I->Op != Item::ConfigurePending)
+ {
+ Args[n++] = "--no-triggers";
+ Size += strlen(Args[n-1]);
+ }
+
// Write in the file or package names
if (I->Op == Item::Install)
{
{
for (;I != J && Size < MaxArgBytes; I++)
{
+ if((*I).Pkg.end() == true)
+ continue;
Args[n++] = I->Pkg.Name();
Size += strlen(Args[n-1]);
}
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);
-
+
+ // ignore SIGHUP as well (debian #463030)
+ sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
+
+ struct termios tt;
+ struct winsize win;
+ int master = -1;
+ int slave = -1;
+
+ // if tcgetattr does not return zero there was a error
+ // and we do not do any pty magic
+ if (tcgetattr(0, &tt) == 0)
+ {
+ ioctl(0, TIOCGWINSZ, (char *)&win);
+ if (openpty(&master, &slave, NULL, &tt, &win) < 0)
+ {
+ const char *s = _("Can not write log, openpty() "
+ "failed (/dev/pts not mounted?)\n");
+ fprintf(stderr, "%s",s);
+ if(term_out)
+ fprintf(term_out, "%s",s);
+ master = slave = -1;
+ } else {
+ struct termios rtt;
+ rtt = tt;
+ cfmakeraw(&rtt);
+ rtt.c_lflag &= ~ECHO;
+ // block SIGTTOU during tcsetattr to prevent a hang if
+ // the process is a member of the background process group
+ // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
+ sigemptyset(&sigmask);
+ sigaddset(&sigmask, SIGTTOU);
+ sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask);
+ tcsetattr(0, TCSAFLUSH, &rtt);
+ sigprocmask(SIG_SETMASK, &original_sigmask, 0);
+ }
+ }
+
// Fork dpkg
pid_t Child;
_config->Set("APT::Keep-Fds::",fd[1]);
+ // send status information that we are about to fork dpkg
+ if(OutStatusFd > 0) {
+ ostringstream status;
+ status << "pmstatus:dpkg-exec:"
+ << (PackagesDone/float(PackagesTotal)*100.0)
+ << ":" << _("Running dpkg")
+ << endl;
+ write(OutStatusFd, status.str().c_str(), status.str().size());
+ }
Child = ExecFork();
// This is the child
if (Child == 0)
{
+ if(slave >= 0 && master >= 0)
+ {
+ setsid();
+ ioctl(slave, TIOCSCTTY, 0);
+ close(master);
+ dup2(slave, 0);
+ dup2(slave, 1);
+ dup2(slave, 2);
+ close(slave);
+ }
close(fd[0]); // close the read end of the pipe
-
+
+ if (_config->FindDir("DPkg::Chroot-Directory","/") != "/")
+ {
+ std::cerr << "Chrooting into "
+ << _config->FindDir("DPkg::Chroot-Directory")
+ << std::endl;
+ if (chroot(_config->FindDir("DPkg::Chroot-Directory","/").c_str()) != 0)
+ _exit(100);
+ }
+
if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
_exit(100);
if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
_exit(100);
}
-
+
/* No Job Control Stop Env is a magic dpkg var that prevents it
from using sigstop */
- putenv("DPKG_NO_TSTP=yes");
+ putenv((char *)"DPKG_NO_TSTP=yes");
execvp(Args[0],(char **)Args);
cerr << "Could not exec dpkg!" << endl;
_exit(100);
}
+ // apply ionice
+ if (_config->FindB("DPkg::UseIoNice", false) == true)
+ ionice(Child);
+
// clear the Keep-Fd again
_config->Clear("APT::Keep-Fds",fd[1]);
int Status = 0;
// we read from dpkg here
- int _dpkgin = fd[0];
- fcntl(_dpkgin, F_SETFL, O_NONBLOCK);
+ int const _dpkgin = fd[0];
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};
-
+ if(slave > 0)
+ close(slave);
+
+ // setups fds
+ sigemptyset(&sigmask);
+ sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
+
// the result of the waitpid call
int res;
-
+ int select_ret;
while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
if(res < 0) {
// FIXME: move this to a function or something, looks ugly here
// Restore sig int/quit
signal(SIGQUIT,old_SIGQUIT);
signal(SIGINT,old_SIGINT);
+ signal(SIGHUP,old_SIGHUP);
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;
- }
+ // wait for input or output here
+ FD_ZERO(&rfds);
+ if (master >= 0 && !stdin_is_dev_null)
+ FD_SET(0, &rfds);
+ FD_SET(_dpkgin, &rfds);
+ if(master >= 0)
+ FD_SET(master, &rfds);
+ tv.tv_sec = 1;
+ tv.tv_nsec = 0;
+ select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL,
+ &tv, &original_sigmask);
+ if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
+ select_ret = racy_pselect(max(master, _dpkgin)+1, &rfds, NULL,
+ NULL, &tv, &original_sigmask);
+ if (select_ret == 0)
+ continue;
+ else if (select_ret < 0 && errno == EINTR)
+ continue;
+ else if (select_ret < 0)
+ {
+ perror("select() returned error");
+ continue;
+ }
- // 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;
-
- // the status we output
- ostringstream status;
-
- /* dpkg sends strings like this:
- 'status: <pkg>: <pkg qstate>'
- errors look like this:
- 'status: /var/cache/apt/archives/krecipes_0.8.1-0ubuntu1_i386.deb : error : trying to overwrite `/usr/share/doc/kde/HTML/en/krecipes/krectip.png', which is also in package krecipes-data
- and conffile-prompt like this
- 'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
-
- */
- char* list[5];
- // dpkg sends multiline error messages sometimes (see
- // #374195 for a example. we should support this by
- // either patching dpkg to not send multiline over the
- // statusfd or by rewriting the code here to deal with
- // it. for now we just ignore it and not crash
- TokSplitString(':', line, list, sizeof(list)/sizeof(list[0]));
- char *pkg = list[1];
- char *action = _strstrip(list[2]);
- if( pkg == NULL || action == NULL)
- {
- if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
- std::clog << "ignoring line: not enough ':'" << std::endl;
- // reset the line buffer
- line[0]=0;
- continue;
- }
-
- if(strncmp(action,"error",strlen("error")) == 0)
- {
- status << "pmerror:" << list[1]
- << ":" << (Done/float(Total)*100.0)
- << ":" << list[3]
- << endl;
- if(OutStatusFd > 0)
- write(OutStatusFd, status.str().c_str(), status.str().size());
- line[0]=0;
- if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
- std::clog << "send: '" << status.str() << "'" << endl;
- continue;
- }
- if(strncmp(action,"conffile",strlen("conffile")) == 0)
- {
- status << "pmconffile:" << list[1]
- << ":" << (Done/float(Total)*100.0)
- << ":" << list[3]
- << endl;
- if(OutStatusFd > 0)
- write(OutStatusFd, status.str().c_str(), status.str().size());
- line[0]=0;
- if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
- std::clog << "send: '" << status.str() << "'" << endl;
- continue;
- }
-
- vector<struct DpkgState> &states = PackageOps[pkg];
- const char *next_action = NULL;
- if(PackageOpsDone[pkg] < states.size())
- next_action = states[PackageOpsDone[pkg]].state;
- // check if the package moved to the next dpkg state
- if(next_action && (strcmp(action, next_action) == 0))
- {
- // only read the translation if there is actually a next
- // action
- const char *translation = _(states[PackageOpsDone[pkg]].str);
- char s[200];
- snprintf(s, sizeof(s), translation, pkg);
-
- // we moved from one dpkg state to a new one, report that
- PackageOpsDone[pkg]++;
- Done++;
- // 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: '" << status.str() << "'" << endl;
-
- }
- if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
- std::clog << "(parsed from dpkg) pkg: " << pkg
- << " action: " << action << endl;
-
- // reset the line buffer
- line[0]=0;
+ if(master >= 0 && FD_ISSET(master, &rfds))
+ DoTerminalPty(master);
+ if(master >= 0 && FD_ISSET(0, &rfds))
+ DoStdin(master);
+ if(FD_ISSET(_dpkgin, &rfds))
+ DoDpkgStatusFd(_dpkgin, OutStatusFd);
}
close(_dpkgin);
// Restore sig int/quit
signal(SIGQUIT,old_SIGQUIT);
signal(SIGINT,old_SIGINT);
+ signal(SIGHUP,old_SIGHUP);
+
+ if(master >= 0)
+ {
+ tcsetattr(0, TCSAFLUSH, &tt);
+ close(master);
+ }
// Check for an error code.
if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
// if it was set to "keep-dpkg-runing" then we won't return
// here but keep the loop going and just report it as a error
// for later
- bool stopOnError = _config->FindB("Dpkg::StopOnError",true);
+ bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
if(stopOnError)
RunScripts("DPkg::Post-Invoke");
if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
- _error->Error("Sub-process %s received a segmentation fault.",Args[0]);
+ strprintf(dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
else if (WIFEXITED(Status) != 0)
- _error->Error("Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
+ strprintf(dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
else
- _error->Error("Sub-process %s exited unexpectedly",Args[0]);
+ strprintf(dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
- if(stopOnError)
+ if(dpkg_error.size() > 0)
+ _error->Error(dpkg_error.c_str());
+
+ if(stopOnError)
+ {
+ CloseLog();
return false;
+ }
}
}
+ CloseLog();
if (RunScripts("DPkg::Post-Invoke") == false)
return false;
+
+ Cache.writeStateFile(NULL);
return true;
}
/*}}}*/
projects / apt.git / blobdiff