* merged with mainline

[apt.git] / apt-pkg / contrib / fileutl.cc

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 4ba8ab05aa815f0ba303b8ebbd4d03f5b575ecdb..9fd71728e9943a702ae6c286067b516ea55a1acc 100644 (file)
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -20,6 +20,7 @@
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
+#include <apt-pkg/configuration.h>
 
 #include <apti18n.h>
 
@@ -32,6 +33,7 @@
 #include <sys/wait.h>
 #include <signal.h>
 #include <errno.h>
+#include <set>
                                                                        /*}}}*/
 
 using namespace std;
@@ -306,7 +308,7 @@ bool WaitFd(int Fd,bool write,unsigned long timeout)
 /* This is used if you want to cleanse the environment for the forked 
    child, it fixes up the important signals and nukes all of the fds,
    otherwise acts like normal fork. */
-int ExecFork()
+pid_t ExecFork()
 {
    // Fork off the process
    pid_t Process = fork();
@@ -326,10 +328,27 @@ int ExecFork()
       signal(SIGWINCH,SIG_DFL);
       signal(SIGCONT,SIG_DFL);
       signal(SIGTSTP,SIG_DFL);
-      
+
+      set<int> KeepFDs;
+      Configuration::Item const *Opts = _config->Tree("APT::Keep-Fds");
+      if (Opts != 0 && Opts->Child != 0)
+      {
+        Opts = Opts->Child;
+        for (; Opts != 0; Opts = Opts->Next)
+        {
+           if (Opts->Value.empty() == true)
+              continue;
+           int fd = atoi(Opts->Value.c_str());
+           KeepFDs.insert(fd);
+        }
+      }
+
       // Close all of our FDs - just in case
       for (int K = 3; K != 40; K++)
-        fcntl(K,F_SETFD,FD_CLOEXEC);
+      {
+        if(KeepFDs.find(K) == KeepFDs.end())
+           fcntl(K,F_SETFD,FD_CLOEXEC);
+      }
    }
    
    return Process;
@@ -340,7 +359,7 @@ int ExecFork()
 /* Waits for the given sub process. If Reap is set then no errors are 
    generated. Otherwise a failed subprocess will generate a proper descriptive
    message */
-bool ExecWait(int Pid,const char *Name,bool Reap)
+bool ExecWait(pid_t Pid,const char *Name,bool Reap)
 {
    if (Pid <= 1)
       return true;
@@ -355,7 +374,7 @@ bool ExecWait(int Pid,const char *Name,bool Reap)
       if (Reap == true)
         return false;
       
-      return _error->Error(_("Waited, for %s but it wasn't there"),Name);
+      return _error->Error(_("Waited for %s but it wasn't there"),Name);
    }