[tex-live] tlmgr: permissions on /tmp/texlive.tlpdb.lzma

Norbert Preining preining at logic.at
Fri Sep 12 22:39:40 CEST 2008

On Fr, 12 Sep 2008, Dr. Clea F. Rees wrote:
> What role does /tmp/texlive.tlpdb.lzma play?

It is a temp file. And it should be removed. Sorry, I will try to fix

The same happens with /tmp/texlive.tlpdb

> --list" or "tlmgr list", I get a message complaining that permissions
> are denied for /tmp/texlive.tlpdb.lzma. The permissions are 0644 with

Not surprising.

- fetch  current tlmgr.pl AND TLPDB.pm
- as root call tlmgr update --list
- as normal user try tlmgr update --list

Karl, that is that patch, I will try to hack something for Win32 and
temp files.

Index: TLPDB.pm
--- TLPDB.pm	(revision 10573)
+++ TLPDB.pm	(working copy)
@@ -205,6 +205,7 @@
   my $retfh;
+  my $tlpdbfile;
   if ($path =~ m;^((http|ftp)://|file:\/\/*);) {
     debug("TLPDB.pm: trying to initialize from $path\n");
     # if we have lzmadec available we try the lzma file
@@ -214,7 +215,9 @@
       my $bn = TeXLive::TLUtils::basename("$path");
       my $lzmafile = "$tmpdir/$bn.lzma";
       my $lzmafile_quote = $lzmafile;
-      my $tlpdbfile = "$tmpdir/$bn";
+      # this is a variable of the whole sub as we have to remove the file
+      # before returning
+      $tlpdbfile = "$tmpdir/$bn";
       my $tlpdbfile_quote = $tlpdbfile;
       if (win32()) {
         $lzmafile  =~ s!/!\\!g;
@@ -231,6 +234,9 @@
         # lzmadec *hopefully* returns 0 on success and anything else on failure
         if (!system("$::progs{'lzmadec'} < $lzmafile_quote > $tlpdbfile_quote")) {
           debug("Un-lzmaing $lzmafile did not succeed, try normally\n");
+          # to be sure we unlink the lzma file and the tlpdbfile
+          unlink($lzmafile);
+          unlink($tlpdbfile);
         } else {
           open $retfh, "<$tlpdbfile" or die"Cannot open $tlpdbfile!";
@@ -266,6 +272,9 @@
   if (!$found) {
     tlwarn("Cannot read any package from $path, seems not to be a TLPDB!");
+  # remove the un-lzma-ed tlpdb file from temp dir
+  # THAT IS RACY!!! we should fix that in some better way with tempfile
+  unlink($tlpdbfile) if $tlpdbfile;

Best wishes


Dr. Norbert Preining <preining at logic.at>        Vienna University of Technology
Debian Developer <preining at debian.org>                         Debian TeX Group
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