// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: dpkgpm.cc,v 1.6 1999/01/31 08:49:39 jgg Exp $
+// $Id: dpkgpm.cc,v 1.28 2004/01/27 02:25:01 mdz Exp $
/* ######################################################################
DPKG Package Manager - Provide an interface to dpkg
##################################################################### */
/*}}}*/
// 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("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;
+ }
+ };
+}
+
// 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)
{
}
/*}}}*/
// DPkgPM::Remove - Remove a package /*{{{*/
// ---------------------------------------------------------------------
/* Add a remove operation to the sequence list */
-bool pkgDPkgPM::Remove(PkgIterator Pkg)
+bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
{
if (Pkg.end() == true)
return false;
- List.push_back(Item(Item::Remove,Pkg));
+ if (Purge == true)
+ List.push_back(Item(Item::Purge,Pkg));
+ else
+ List.push_back(Item(Item::Remove,Pkg));
+ return true;
+}
+ /*}}}*/
+// DPkgPM::SendV2Pkgs - Send version 2 package info /*{{{*/
+// ---------------------------------------------------------------------
+/* This is part of the helper script communication interface, it sends
+ very complete information down to the other end of the pipe.*/
+bool pkgDPkgPM::SendV2Pkgs(FILE *F)
+{
+ fprintf(F,"VERSION 2\n");
+
+ /* Write out all of the configuration directives by walking the
+ configuration tree */
+ const Configuration::Item *Top = _config->Tree(0);
+ for (; Top != 0;)
+ {
+ if (Top->Value.empty() == false)
+ {
+ fprintf(F,"%s=%s\n",
+ QuoteString(Top->FullTag(),"=\"\n").c_str(),
+ QuoteString(Top->Value,"\n").c_str());
+ }
+
+ if (Top->Child != 0)
+ {
+ Top = Top->Child;
+ continue;
+ }
+
+ while (Top != 0 && Top->Next == 0)
+ Top = Top->Parent;
+ if (Top != 0)
+ Top = Top->Next;
+ }
+ fprintf(F,"\n");
+
+ // Write out the package actions in order.
+ for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
+ {
+ pkgDepCache::StateCache &S = Cache[I->Pkg];
+
+ fprintf(F,"%s ",I->Pkg.Name());
+ // Current version
+ if (I->Pkg->CurrentVer == 0)
+ fprintf(F,"- ");
+ else
+ fprintf(F,"%s ",I->Pkg.CurrentVer().VerStr());
+
+ // Show the compare operator
+ // Target version
+ if (S.InstallVer != 0)
+ {
+ int Comp = 2;
+ if (I->Pkg->CurrentVer != 0)
+ Comp = S.InstVerIter(Cache).CompareVer(I->Pkg.CurrentVer());
+ if (Comp < 0)
+ fprintf(F,"> ");
+ if (Comp == 0)
+ fprintf(F,"= ");
+ if (Comp > 0)
+ fprintf(F,"< ");
+ fprintf(F,"%s ",S.InstVerIter(Cache).VerStr());
+ }
+ else
+ fprintf(F,"> - ");
+
+ // Show the filename/operation
+ if (I->Op == Item::Install)
+ {
+ // No errors here..
+ if (I->File[0] != '/')
+ fprintf(F,"**ERROR**\n");
+ else
+ fprintf(F,"%s\n",I->File.c_str());
+ }
+ if (I->Op == Item::Configure)
+ fprintf(F,"**CONFIGURE**\n");
+ if (I->Op == Item::Remove ||
+ I->Op == Item::Purge)
+ fprintf(F,"**REMOVE**\n");
+
+ if (ferror(F) != 0)
+ return false;
+ }
return true;
}
/*}}}*/
-// DPkgPM::RunScripts - Run a set of scripts /*{{{*/
+// DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
// ---------------------------------------------------------------------
-/* 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)
+/* This looks for a list of scripts to run from the configuration file
+ each one is run and is fed on standard input a list of all .deb files
+ that are due to be installed. */
+bool pkgDPkgPM::RunScriptsWithPkgs(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 = fork();
- if (Child < 0)
- return _error->Errno("fork","Could't fork");
- // This is the child
- if (Child == 0)
+ unsigned int Count = 1;
+ for (; Opts != 0; Opts = Opts->Next, Count++)
{
- signal(SIGPIPE,SIG_DFL);
- signal(SIGQUIT,SIG_DFL);
- signal(SIGINT,SIG_DFL);
- signal(SIGWINCH,SIG_DFL);
- signal(SIGCONT,SIG_DFL);
- signal(SIGTSTP,SIG_DFL);
+ if (Opts->Value.empty() == true)
+ continue;
+
+ // Determine the protocol version
+ string OptSec = Opts->Value;
+ string::size_type Pos;
+ if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
+ Pos = OptSec.length();
+ OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
- if (chdir("/tmp/") != 0)
- _exit(100);
-
- // Close all of our FDs - just in case
- for (int K = 3; K != 40; K++)
- fcntl(K,F_SETFD,FD_CLOEXEC);
+ unsigned int Version = _config->FindI(OptSec+"::Version",1);
+
+ // Create the pipes
+ int Pipes[2];
+ if (pipe(Pipes) != 0)
+ return _error->Errno("pipe","Failed to create IPC pipe to subprocess");
+ SetCloseExec(Pipes[0],true);
+ SetCloseExec(Pipes[1],true);
+
+ // Purified Fork for running the script
+ pid_t Process = ExecFork();
+ if (Process == 0)
+ {
+ // Setup the FDs
+ dup2(Pipes[0],STDIN_FILENO);
+ SetCloseExec(STDOUT_FILENO,false);
+ SetCloseExec(STDIN_FILENO,false);
+ SetCloseExec(STDERR_FILENO,false);
- unsigned int Count = 1;
- for (; Opts != 0; Opts = Opts->Next, Count++)
+ const char *Args[4];
+ Args[0] = "/bin/sh";
+ Args[1] = "-c";
+ Args[2] = Opts->Value.c_str();
+ Args[3] = 0;
+ execv(Args[0],(char **)Args);
+ _exit(100);
+ }
+ close(Pipes[0]);
+ FILE *F = fdopen(Pipes[1],"w");
+ if (F == 0)
+ return _error->Errno("fdopen","Faild to open new FD");
+
+ // Feed it the filenames.
+ bool Die = false;
+ if (Version <= 1)
{
- if (Opts->Value.empty() == true)
- continue;
-
- if (system(Opts->Value.c_str()) != 0)
- _exit(100+Count);
+ for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
+ {
+ // Only deal with packages to be installed from .deb
+ if (I->Op != Item::Install)
+ continue;
+
+ // No errors here..
+ if (I->File[0] != '/')
+ continue;
+
+ /* Feed the filename of each package that is pending install
+ into the pipe. */
+ fprintf(F,"%s\n",I->File.c_str());
+ if (ferror(F) != 0)
+ {
+ Die = true;
+ break;
+ }
+ }
}
- _exit(0);
- }
+ else
+ Die = !SendV2Pkgs(F);
+
+ fclose(F);
+
+ // Clean up the sub process
+ if (ExecWait(Process,Opts->Value.c_str()) == false)
+ 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, };
- // Wait for the child
- int Status = 0;
- while (waitpid(Child,&Status,0) != Child)
+ ssize_t len=read(master, term_buf, sizeof(term_buf));
+ if(len == -1 && errno == EIO)
{
- if (errno == EINTR)
- continue;
- return _error->Errno("waitpid","Couldn't wait for subprocess");
+ // 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)
+{
+ // the status we output
+ ostringstream status;
+
+ if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == 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: 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 (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
+ std::clog << "ignoring line: not enough ':'" << std::endl;
+ return;
}
+ char *pkg = list[1];
+ char *action = _strstrip(list[2]);
- // Restore sig int/quit
- signal(SIGQUIT,SIG_DFL);
- signal(SIGINT,SIG_DFL);
-
- // Check for an error code.
- if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
+ // 'processing' from dpkg looks like
+ // 'processing: action: pkg'
+ if(strncmp(list[0], "processing", strlen("processing")) == 0)
{
- unsigned int Count = WEXITSTATUS(Status);
- if (Count > 100)
+ char s[200];
+ char *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)
{
- Count -= 100;
- for (; Opts != 0 && Count != 1; Opts = Opts->Next, Count--);
- _error->Error("Probablem executing scripts %s '%s'",Cnf,Opts->Value.c_str());
+ if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
+ std::clog << "ignoring unknwon action: " << action << std::endl;
+ return;
}
-
- return _error->Error("Sub-process returned an error code");
+ 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 (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ return;
}
-
- return true;
+
+ 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 (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ return;
+ }
+ 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 (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
+ std::clog << "send: '" << status.str() << "'" << endl;
+ return;
+ }
+
+ 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]++;
+ 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 (_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;
+}
+
+// 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;
}
/*}}}*/
+
+bool pkgDPkgPM::OpenLog()
+{
+ string logdir = _config->FindDir("Dir::Log");
+ if(not FileExists(logdir))
+ return _error->Error(_("Directory '%s' missing"), logdir.c_str());
+ string logfile_name = flCombine(logdir,
+ _config->Find("Dir::Log::Terminal"));
+ if (!logfile_name.empty())
+ {
+ term_out = fopen(logfile_name.c_str(),"a");
+ chmod(logfile_name.c_str(), 0600);
+ // output current time
+ char outstr[200];
+ time_t t = time(NULL);
+ struct tm *tmp = localtime(&t);
+ strftime(outstr, sizeof(outstr), "%F %T", tmp);
+ fprintf(term_out, "\nLog started: ");
+ fprintf(term_out, "%s", outstr);
+ fprintf(term_out, "\n");
+ }
+ return true;
+}
+
+bool pkgDPkgPM::CloseLog()
+{
+ if(term_out)
+ {
+ char outstr[200];
+ time_t t = time(NULL);
+ struct tm *tmp = localtime(&t);
+ strftime(outstr, sizeof(outstr), "%F %T", tmp);
+ fprintf(term_out, "Log ended: ");
+ fprintf(term_out, "%s", outstr);
+ fprintf(term_out, "\n");
+ fclose(term_out);
+ }
+ term_out = NULL;
+ 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()
+/* 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);
+ bool NoTriggers = _config->FindB("DPkg::NoTriggers",false);
+
if (RunScripts("DPkg::Pre-Invoke") == false)
return false;
-
+
+ if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
+ return false;
+
+ // 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[][7] = {
+ // Install operation
+ {
+ {"half-installed", N_("Preparing %s")},
+ {"unpacked", N_("Unpacking %s") },
+ {NULL, NULL}
+ },
+ // Configure operation
+ {
+ {"unpacked",N_("Preparing to configure %s") },
+ {"half-configured", N_("Configuring %s") },
+#if 0
+ {"triggers-awaited", N_("Processing triggers for %s") },
+ {"triggers-pending", N_("Processing triggers for %s") },
+#endif
+ { "installed", N_("Installed %s")},
+ {NULL, NULL}
+ },
+ // Remove operation
+ {
+ {"half-configured", N_("Preparing for removal of %s")},
+#if 0
+ {"triggers-awaited", N_("Preparing for removal of %s")},
+ {"triggers-pending", N_("Preparing for removal of %s")},
+#endif
+ {"half-installed", N_("Removing %s")},
+ {"config-files", N_("Removed %s")},
+ {NULL, NULL}
+ },
+ // Purge operation
+ {
+ {"config-files", N_("Preparing to completely remove %s")},
+ {"not-installed", N_("Completely removed %s")},
+ {NULL, NULL}
+ },
+ };
+
+ // 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]);
+ 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();)
{
vector<Item>::iterator J = I;
for (; J != List.end() && J->Op == I->Op; J++);
// Generate the argument list
- const char *Args[400];
- if (J - I > 350)
- J = I + 350;
+ const char *Args[MaxArgs + 50];
+ if (J - I > (signed)MaxArgs)
+ J = I + MaxArgs;
unsigned int n = 0;
unsigned long Size = 0;
- Args[n++] = _config->Find("Dir::Bin::dpkg","dpkg").c_str();
+ string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
+ Args[n++] = Tmp.c_str();
Size += strlen(Args[n-1]);
// Stick in any custom dpkg options
}
}
+ char status_fd_buf[20];
+ 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)
{
case Item::Remove:
Size += strlen(Args[n-1]);
break;
+ case Item::Purge:
+ Args[n++] = "--force-depends";
+ Size += strlen(Args[n-1]);
+ Args[n++] = "--force-remove-essential";
+ Size += strlen(Args[n-1]);
+ Args[n++] = "--purge";
+ Size += strlen(Args[n-1]);
+ break;
+
case Item::Configure:
Args[n++] = "--configure";
+ if (NoTriggers)
+ Args[n++] = "--no-triggers";
Size += strlen(Args[n-1]);
break;
case Item::Install:
Args[n++] = "--unpack";
Size += strlen(Args[n-1]);
+ Args[n++] = "--auto-deconfigure";
+ Size += strlen(Args[n-1]);
break;
}
// Write in the file or package names
if (I->Op == Item::Install)
{
- for (;I != J && Size < 1024; I++)
+ for (;I != J && Size < MaxArgBytes; I++)
{
+ if (I->File[0] != '/')
+ return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
Args[n++] = I->File.c_str();
Size += strlen(Args[n-1]);
}
}
else
{
- for (;I != J && Size < 1024; I++)
+ for (;I != J && Size < MaxArgBytes; I++)
{
Args[n++] = I->Pkg.Name();
Size += strlen(Args[n-1]);
it forks scripts. What happens is that when you hit ctrl-c it sends
it to all processes in the group. Since dpkg ignores the signal
it doesn't die but we do! So we must also ignore it */
- signal(SIGQUIT,SIG_IGN);
- signal(SIGINT,SIG_IGN);
-
- // Fork dpkg
- pid_t Child = fork();
- if (Child < 0)
- return _error->Errno("fork","Could't fork");
+ sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
+ sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN);
+
+ struct termios tt;
+ struct termios tt_out;
+ struct winsize win;
+ int master;
+ int slave;
+
+ // FIXME: setup sensible signal handling (*ick*)
+ tcgetattr(0, &tt);
+ tcgetattr(1, &tt_out);
+ ioctl(0, TIOCGWINSZ, (char *)&win);
+ if (openpty(&master, &slave, NULL, &tt_out, &win) < 0)
+ {
+ const char *s = _("Can not write log, openpty() "
+ "failed (/dev/pts not mounted?)\n");
+ fprintf(stderr, "%s",s);
+ fprintf(term_out, "%s",s);
+ master = slave = -1;
+ } else {
+ struct termios rtt;
+ rtt = tt;
+ cfmakeraw(&rtt);
+ rtt.c_lflag &= ~ECHO;
+ tcsetattr(0, TCSAFLUSH, &rtt);
+ }
+
+ // Fork dpkg
+ pid_t Child;
+ _config->Set("APT::Keep-Fds::",fd[1]);
+ Child = ExecFork();
// This is the child
if (Child == 0)
{
- signal(SIGPIPE,SIG_DFL);
- signal(SIGQUIT,SIG_DFL);
- signal(SIGINT,SIG_DFL);
- signal(SIGWINCH,SIG_DFL);
- signal(SIGCONT,SIG_DFL);
- signal(SIGTSTP,SIG_DFL);
-
- if (chdir(_config->FindDir("Dir::Cache::Archives").c_str()) != 0)
- _exit(100);
-
- // Close all of our FDs - just in case
- for (int K = 3; K != 40; K++)
- fcntl(K,F_SETFD,FD_CLOEXEC);
+ 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
- int Flags,dummy;
- if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
+ if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
_exit(100);
- // Discard everything in stdin before forking dpkg
- if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
- _exit(100);
-
- while (read(STDIN_FILENO,&dummy,1) == 1);
-
- if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
- _exit(100);
+ if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
+ {
+ int Flags,dummy;
+ if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
+ _exit(100);
+
+ // Discard everything in stdin before forking dpkg
+ if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
+ _exit(100);
+
+ while (read(STDIN_FILENO,&dummy,1) == 1);
+
+ 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 */
- setenv("DPKG_NO_TSTP","yes",1);
+ putenv((char *)"DPKG_NO_TSTP=yes");
execvp(Args[0],(char **)Args);
cerr << "Could not exec dpkg!" << endl;
_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)
- continue;
- RunScripts("DPkg::Post-Invoke");
- return _error->Errno("waitpid","Couldn't wait for subprocess");
+
+ // we read from dpkg here
+ int _dpkgin = fd[0];
+ close(fd[1]); // close the write end of the pipe
+
+ // the result of the waitpid call
+ int res;
+ if(slave > 0)
+ close(slave);
+
+ // setups fds
+ fd_set rfds;
+ struct timespec tv;
+ sigset_t sigmask;
+ sigset_t original_sigmask;
+ sigemptyset(&sigmask);
+ sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
+
+ int select_ret;
+ 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");
+ }
+
+ // wait for input or output here
+ FD_ZERO(&rfds);
+ if (!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;
+ }
+
+ 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,SIG_DFL);
- signal(SIGINT,SIG_DFL);
+ signal(SIGQUIT,old_SIGQUIT);
+ signal(SIGINT,old_SIGINT);
+
+ if(master >= 0)
+ {
+ tcsetattr(0, TCSAFLUSH, &tt);
+ close(master);
+ }
// Check for an error code.
if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
{
- RunScripts("DPkg::Post-Invoke");
- return _error->Error("Sub-process returned an error code");
+ // 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);
+
+ if(stopOnError)
+ RunScripts("DPkg::Post-Invoke");
+
+ if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
+ _error->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));
+ else
+ _error->Error("Sub-process %s exited unexpectedly",Args[0]);
+
+ if(stopOnError)
+ {
+ CloseLog();
+ return false;
+ }
}
}
+ CloseLog();
if (RunScripts("DPkg::Post-Invoke") == false)
return false;
+
+ Cache.writeStateFile(NULL);
return true;
}
/*}}}*/
+// pkgDpkgPM::Reset - Dump the contents of the command list /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgDPkgPM::Reset()
+{
+ List.erase(List.begin(),List.end());
+}
+ /*}}}*/
projects / apt.git / blobdiff