path: root/service_solahart_jakarta_selatan__082122541663/exec.mdwn
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authorSamuel Thibault <>2015-02-18 00:58:35 +0100
committerSamuel Thibault <>2015-02-18 00:58:35 +0100
commit49a086299e047b18280457b654790ef4a2e5abfa (patch)
treec2b29e0734d560ce4f58c6945390650b5cac8a1b /service_solahart_jakarta_selatan__082122541663/exec.mdwn
parente2b3602ea241cd0f6bc3db88bf055bee459028b6 (diff)
Revert "rename open_issues.mdwn to service_solahart_jakarta_selatan__082122541663.mdwn"
This reverts commit 95878586ec7611791f4001a4ee17abf943fae3c1.
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-[[!meta copyright="Copyright © 2010, 2013 Free Software Foundation, Inc."]]
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
-is included in the section entitled [[GNU Free Documentation
-[[!tag open_issue_hurd]]
-# IRC, unknown channel, unknown date.
- <youpi> oh my, disabling gzip/bzip2 support makes apt preconfigure hang
- <youpi> support in exec* I meant
- <youpi> now a funny bug: if I disable gzip/bzip2 support from exec
- <youpi> trying to run a zero-byte file hangs
-Justus: This doesn't seem to be an issue anymore (2013-09-08):
- % touch empty
- % chmod +x empty
- % ./empty
- zsh: exec format error: ./empty
- % bash
- $ ./empty
- $
-Also I've never encountered a problem with apt.
-## IRC, freenode, #hurd, 2013-08-01
- <teythoon> uh, all the non trivial exec server code has #ifdef'd BFD code
- all over it and it looks like that isn't even used anymore
- <teythoon> that's too bad actually, I figured out how to get the values
- from BFD, not so for the other elf parser that is used instead
-## IRC, freenode, #hurd, 2013-08-05
- <teythoon> btw, there is a Debian bug concerning zipped executables. now
- I'm not sure if I understood the problem, but gziped and bzip2ed
- executables work for me
- <teythoon> (not that I'm a big fan of that particular feature)
- <youpi> iirc these somehow got fixed yes
- <youpi> something like a previous out of bound access
- <teythoon> the exec server contains lot's of code that is unused and
- probably bit rot (#ifdef BFD) or otherwise ignored (#if 0)
- <youpi> yes :/
- <teythoon> and there's gunzipping and bunzip2ing, which we probably don't
- want anyway
- <pinotree> why not?
- <teythoon> we should strip all that from exec and start adding features
- <teythoon> pinotree: b/c it's slow and the gain is questionable
- <teythoon> it breaks mmapping the code in
- <teythoon> exec/exec.c is huge (~2300 lines) and complex and it is an
- essential server
- <teythoon> and I wonder if the unzipping is done securely, e. g. if it's
- not possible to crash exec with an maliciously compressed executable
-## IRC, freenode, #hurd, 2013-09-12
- <rekado> The zip code in hurd/exec/ looks really complicated; does it
- really just unpack zipped files in memory (which could be replaced by
- library calls) or is there something else going on?
- <braunr> rekado:
- <rekado> braunr: interesting. Thanks.
- <rekado> Does this mean that the "small hack entry" on the contributing
- page to use libz and libbz2 in exec is no longer valid?
- <braunr> probably
-May want to have a look at using BFD / libiberty/simpleobject.
-Justus: The BFD code has been removed from the exec server.