Apply patch from Sami Liedes <sliedes@cc.hut.fi> to avoid unecessary

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

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 77287952a8afb37707e144f6cd353fbda643c5f9..a7de09c44d6d99f1d779053fc5fef341a63cbb55 100644 (file)
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -17,9 +17,6 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/fileutl.h"
-#endif 
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
@@ -27,6 +24,9 @@
 
 #include <apti18n.h>
 
+#include <cstdlib>
+#include <cstring>
+
 #include <iostream>
 #include <unistd.h>
 #include <fcntl.h>
@@ -138,7 +138,9 @@ bool CopyFile(FileFd &From,FileFd &To)
    close at some time. */
 int GetLock(string File,bool Errors)
 {
-   int FD = open(File.c_str(),O_RDWR | O_CREAT | O_TRUNC,0640);
+   // GetLock() is used in aptitude on directories with public-write access
+   // Use O_NOFOLLOW here to prevent symlink traversal attacks
+   int FD = open(File.c_str(),O_RDWR | O_CREAT | O_NOFOLLOW,0640);
    if (FD < 0)
    {
       // Read only .. cant have locking problems there.
@@ -448,8 +450,11 @@ bool ExecWait(pid_t Pid,const char *Name,bool Reap)
    {
       if (Reap == true)
         return false;
-      if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
-        return _error->Error(_("Sub-process %s received a segmentation fault."),Name);
+      if (WIFSIGNALED(Status) != 0)
+        if( WTERMSIG(Status) == SIGSEGV)
+           return _error->Error(_("Sub-process %s received a segmentation fault."),Name);
+        else 
+           return _error->Error(_("Sub-process %s received signal %u."),Name, WTERMSIG(Status));
 
       if (WIFEXITED(Status) != 0)
         return _error->Error(_("Sub-process %s returned an error code (%u)"),Name,WEXITSTATUS(Status));