// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: dpkgpm.cc,v 1.1 1998/11/13 04:23:39 jgg Exp $
+// $Id: dpkgpm.cc,v 1.8 1999/03/05 19:36:49 jgg Exp $
/* ######################################################################
DPKG Package Manager - Provide an interface to dpkg
return false;
List.push_back(Item(Item::Remove,Pkg));
+ 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 = fork();
+ if (Child < 0)
+ return _error->Errno("fork","Could't fork");
+
+ // 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++)
+ {
+ 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;
}
/*}}}*/
/* This globs the operations and calls dpkg */
bool pkgDPkgPM::Go()
{
+ if (RunScripts("DPkg::Pre-Invoke") == false)
+ return false;
+
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;
- int n= 0;
- Args[n++] = "dpkg";
+ unsigned int n = 0;
+ unsigned long Size = 0;
+ Args[n++] = _config->Find("Dir::Bin::dpkg","dpkg").c_str();
+ Size += strlen(Args[n-1]);
+
+ // Stick in any custom dpkg options
+ Configuration::Item const *Opts = _config->Tree("DPkg::Options");
+ if (Opts != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+ Args[n++] = Opts->Value.c_str();
+ Size += Opts->Value.length();
+ }
+ }
switch (I->Op)
{
case Item::Remove:
Args[n++] = "--force-depends";
+ Size += strlen(Args[n-1]);
Args[n++] = "--force-remove-essential";
+ Size += strlen(Args[n-1]);
Args[n++] = "--remove";
+ Size += strlen(Args[n-1]);
break;
case Item::Configure:
Args[n++] = "--configure";
+ Size += strlen(Args[n-1]);
break;
case Item::Install:
Args[n++] = "--unpack";
+ Size += strlen(Args[n-1]);
break;
}
// Write in the file or package names
if (I->Op == Item::Install)
- for (;I != J; I++)
+ {
+ 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]);
+ }
+ }
else
- for (;I != J; I++)
+ {
+ for (;I != J && Size < 1024; I++)
+ {
Args[n++] = I->Pkg.Name();
+ Size += strlen(Args[n-1]);
+ }
+ }
Args[n] = 0;
+ J = I;
+
+ if (_config->FindB("Debug::pkgDPkgPM",false) == true)
+ {
+ for (unsigned int k = 0; k != n; k++)
+ clog << Args[k] << ' ';
+ clog << endl;
+ continue;
+ }
-/* for (int k = 0; k != n; k++)
- cout << Args[k] << ' ';
- cout << endl;*/
-
cout << flush;
clog << flush;
cerr << flush;
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");
-
+
// 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);
+
+ 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++)
int Flags,dummy;
if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
- exit(100);
+ _exit(100);
// Discard everything in stdin before forking dpkg
if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
- exit(100);
+ _exit(100);
while (read(STDIN_FILENO,&dummy,1) == 1);
if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
- exit(100);
+ _exit(100);
/* No Job Control Stop Env is a magic dpkg var that prevents it
from using sigstop */
setenv("DPKG_NO_TSTP","yes",1);
- execvp("dpkg",(char **)Args);
+ execvp(Args[0],(char **)Args);
cerr << "Could not exec dpkg!" << endl;
- exit(100);
+ _exit(100);
}
// Wait for dpkg
{
if (errno == EINTR)
continue;
+ RunScripts("DPkg::Post-Invoke");
return _error->Errno("waitpid","Couldn't wait for subprocess");
}
-
- // Check for an error code.
- if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
- return _error->Error("Sub-process returned an error code");
// Restore sig int/quit
signal(SIGQUIT,SIG_DFL);
signal(SIGINT,SIG_DFL);
+
+ // Check for an error code.
+ if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
+ {
+ RunScripts("DPkg::Post-Invoke");
+ if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
+ return _error->Error("Sub-process recieved a segmentation fault.");
+
+ if (WIFEXITED(Status) != 0)
+ return _error->Error("Sub-process returned an error code (%u)",WEXITSTATUS(Status));
+
+ return _error->Error("Sub-process exited unexpectedly");
+ }
}
+
+ if (RunScripts("DPkg::Post-Invoke") == false)
+ return false;
return true;
}
/*}}}*/
projects / apt.git / blobdiff