// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: dpkgpm.cc,v 1.6 1999/01/31 08:49:39 jgg Exp $
+// $Id: dpkgpm.cc,v 1.16 1999/12/12 03:48:36 jgg Exp $
/* ######################################################################
DPKG Package Manager - Provide an interface to dpkg
#include <sys/wait.h>
#include <signal.h>
#include <errno.h>
+#include <stdio.h>
/*}}}*/
// DPkgPM::pkgDPkgPM - Constructor /*{{{*/
// 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;
}
/*}}}*/
Opts = Opts->Child;
// Fork for running the system calls
- pid_t Child = fork();
- if (Child < 0)
- return _error->Errno("fork","Could't fork");
+ pid_t 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("/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 Count = 1;
for (; Opts != 0; Opts = Opts->Next, Count++)
{
// Restore sig int/quit
signal(SIGQUIT,SIG_DFL);
signal(SIGINT,SIG_DFL);
-
+
// Check for an error code.
if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
{
{
Count -= 100;
for (; Opts != 0 && Count != 1; Opts = Opts->Next, Count--);
- _error->Error("Probablem executing scripts %s '%s'",Cnf,Opts->Value.c_str());
+ _error->Error("Problem executing scripts %s '%s'",Cnf,Opts->Value.c_str());
}
return _error->Error("Sub-process returned an error code");
return true;
}
+
+ /*}}}*/
+// DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
+// ---------------------------------------------------------------------
+/* 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;
+
+ unsigned int Count = 1;
+ for (; Opts != 0; Opts = Opts->Next, Count++)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+
+ // 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);
+
+ 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]);
+ FileFd Fd(Pipes[1]);
+
+ // Feed it the filenames.
+ 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. */
+ if (Fd.Write(I->File.begin(),I->File.length()) == false ||
+ Fd.Write("\n",1) == false)
+ {
+ kill(Process,SIGINT);
+ Fd.Close();
+ ExecWait(Process,Opts->Value.c_str(),true);
+ return _error->Error("Failure running script %s",Opts->Value.c_str());
+ }
+ }
+ Fd.Close();
+
+ // 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::Go - Run the sequence /*{{{*/
// ---------------------------------------------------------------------
{
if (RunScripts("DPkg::Pre-Invoke") == false)
return false;
-
+
+ if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
+ return false;
+
for (vector<Item>::iterator I = List.begin(); I != List.end();)
{
vector<Item>::iterator J = I;
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";
Size += strlen(Args[n-1]);
{
for (;I != J && Size < 1024; 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]);
}
signal(SIGINT,SIG_IGN);
// Fork dpkg
- pid_t Child = fork();
- if (Child < 0)
- return _error->Errno("fork","Could't fork");
+ pid_t 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)
+ if (chdir(_config->FindDir("DPkg::Run-Directory","/").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);
-
int Flags,dummy;
if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 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("DPKG_NO_TSTP=yes");
execvp(Args[0],(char **)Args);
cerr << "Could not exec dpkg!" << endl;
_exit(100);
if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
{
RunScripts("DPkg::Post-Invoke");
- return _error->Error("Sub-process returned an error code");
+ if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
+ return _error->Error("Sub-process %s recieved a segmentation fault.",Args[0]);
+
+ if (WIFEXITED(Status) != 0)
+ return _error->Error("Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
+
+ return _error->Error("Sub-process %s exited unexpectedly",Args[0]);
}
}
return true;
}
/*}}}*/
+// pkgDpkgPM::Reset - Dump the contents of the command list /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgDPkgPM::Reset()
+{
+ List.erase(List.begin(),List.end());
+}
+ /*}}}*/
projects / apt.git / blobdiff