Date: Wed, 2 Oct 2002 12:28:59 -0700 From: Steve Beattie <steve@...ex.net> To: xvendor@...ts.openwall.com Subject: Re: stackguard? On Wed, Oct 02, 2002 at 10:13:30PM +0300, Alexander Bokovoy wrote: > On Wed, Oct 02, 2002 at 03:11:00PM -0300, Andreas Hasenack wrote: > > Em Wed, Oct 02, 2002 at 10:20:03AM +0300, Alexander Bokovoy escreveu: > > > > PHP Warning: Unable to load dynamic library '/usr/lib/php4/imap.so' > > > > - /usr/lib/php4/imap.so: undefined symbol : __canary_death_handler > > > > in Unknown on line 0 > > > > > > > > I'm not compiling php nor apache with stackguard. > > > > Never had this error with php/apache/imap before, but I recently completely > > > > redid our php package, perhaps this error was somehow "clouded" before. > > > Looks like some -Wl,-rpath -Wl,/path/to/libstackguard.so is missing during > > > imap.so compilation... > > > > There is no libstackguard. One solution would be to compile php (and apache) with > > stackguard too. > But the symbol itself is provided by something. I can see its definition in > Immunix's glibc/stackguard patch. Do you have glibc compiled with it as > well? Alas, the symbol provided in glibc is visible internally to glibc only. The __canary_death_handler is also provided by the compiler in crtbegin.o and libgcc.a, but those are not commonly linked in when linking a shared library. Andreas, you'll either need to compile php and apache with stackguard, or link in a version of canary.o into imap.so. -- Steve Beattie Don't trust programmers? <steve@...ex.net> Complete StackGuard distro at http://NxNW.org/~steve/ immunix.org http://www.personaltelco.net -- overthrowing QWest, one block at a time. Content of type "application/pgp-signature" skipped
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