Re: How does eu_unstrip restore symbols
Hi Fr3v1, On Thu, 2023-06-29 at 18:09 +0800, Fr3v1 via Elfutils-devel wrote: > Hi there, I want to get the function names and addresses of a large amount > of stripped binaries of Linux packages. The present approach is to restore > symbol names by using 'eu_unstrip' and the .debug file within the > corresponding .ddeb file. After you done that, which information on the functions do you extract and how do you do that? How do you store this information and what is it being used for? > So here are my two questions: 1. Is there another way to get the function > names and their addresses? You can run eu-readelf -s on both the main executable and the .debug file. The main executable will at least contain the .dynsym symbols, the .debug file will have the .symtab symbols in most cases. > 2. How does eu_unstirp work, does it really make > stripped one 'unstrip'? Yes, that how it works, it merges the sections from the main executable and the separate debug file into one as it was before separating them. > Will it occur to some kind of precision error 3. > How fast is it for like 10 million tiny binaries? I think you will have to measure that yourself. Cheers, Mark
Re: Performance issue with systemd-coredump and container process linking 2000 shared libraries.
> Le 27 juin 2023 à 16:09, Mark Wielaard a écrit : > > Hi, > > On Wed, 2023-06-21 at 18:24 +0200, Mark Wielaard wrote: > > I pushed this now. It is also in Fedora Rawhide: > https://bodhi.fedoraproject.org/updates/FEDORA-2023-1026cbdd9a > But there are some gating issues (nothing to do with the new code > though, it seems to be dnf5/annobin/rpminspect issues). > > I'll try to also push it to centos stream. > > Cheers, > > Mark Thanks ;)
Re: Performance issue with systemd-coredump and container process linking 2000 shared libraries.
On Fri, Jun 30, 2023 at 04:09:37PM +, Romain GEISSLER wrote: > > Le 27 juin 2023 à 16:09, Mark Wielaard a écrit : > > On Wed, 2023-06-21 at 18:24 +0200, Mark Wielaard wrote: > > > > I pushed this now. It is also in Fedora Rawhide: > > https://bodhi.fedoraproject.org/updates/FEDORA-2023-1026cbdd9a > > But there are some gating issues (nothing to do with the new code > > though, it seems to be dnf5/annobin/rpminspect issues). > > > > I'll try to also push it to centos stream. > > > Thanks ;) https://kojihub.stream.centos.org/koji/buildinfo?buildID=34064 https://kojihub.stream.centos.org/koji/buildinfo?buildID=34065 Cheers, Mark
