* merged changes from Kamions upload (thanks!)

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

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 4db73c47934b72be6817351cea915a521b831509..9fd71728e9943a702ae6c286067b516ea55a1acc 100644 (file)
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: fileutl.cc,v 1.39 2001/05/07 05:30:31 jgg Exp $
+// $Id: fileutl.cc,v 1.42 2002/09/14 05:29:22 jgg Exp $
 /* ######################################################################
    
    File Utilities
@@ -9,7 +9,7 @@
    GetLock - dpkg compatible lock file manipulation (fcntl)
    
    This source is placed in the Public Domain, do with it what you will
-   It was originally written by Jason Gunthorpe.
+   It was originally written by Jason Gunthorpe <jgg@debian.org>.
    
    ##################################################################### */
                                                                        /*}}}*/
@@ -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;
@@ -156,12 +158,12 @@ string flNotDir(string File)
                                                                        /*}}}*/
 // flNotFile - Strip the file from the directory name                  /*{{{*/
 // ---------------------------------------------------------------------
-/* */
+/* Result ends in a / */
 string flNotFile(string File)
 {
    string::size_type Res = File.rfind('/');
    if (Res == string::npos)
-      return File;
+      return "./";
    Res++;
    return string(File,0,Res);
 }
@@ -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;
@@ -337,10 +356,10 @@ int ExecFork()
                                                                        /*}}}*/
 // ExecWait - Fancy waitpid                                            /*{{{*/
 // ---------------------------------------------------------------------
-/* Waits for the given sub process. If Reap is set the no errors are 
+/* 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);
    }