Hi François, On Wed, Jun 03, 2009 at 10:04:34PM +1200, Francois Marier wrote: > I've tried to find where this is coming from and the only line which uses > "--control" is /usr/bin/debsums:491 > > It is triggered whenever I do something like: > > apt-get install --reinstall gawk > > However, this is what gets run: > > dpkg --control /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb > /tmp/vQkt8g7Oc8/DEBIAN > > So I'm not sure how to reproduce your problem using dpkg 1.15.2
Interesting. One thing I noticed just now (and more or less by accident while trying to capture the whole strace output) is that the reinstalling apt-get process was named "apt-get.real". And this was the reason for this suffix: 53/100/0 r...@kiva6:pts/ttyp4 12:47:50 [~] # dpkg -S /usr/bin/apt-get diversion by ia32-apt-get from: /usr/bin/apt-get diversion by ia32-apt-get to: /usr/bin/apt-get.real apt, ia32-apt-get: /usr/bin/apt-get 54/0/0 r...@kiva6:pts/ttyp4 12:48:02 [~] # I purged ia32-apt-get (and all not otherwise necessary dependencies) and the problem vanished. With ia32-apt-get installed, your command looks like this: 24/1/1 r...@kiva6:pts/ttyp4 12:25:02 [~] # apt-get install --reinstall gawk apt-get: install --reinstall gawk Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 1 not upgraded. Need to get 769kB of archives. After this operation, 0B of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://ftp.ch.debian.org sid/main gawk 1:3.1.6.dfsg-3 [769kB] Fetched 769kB in 0s (7320kB/s) dpkg-deb: --control /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb /var/lib/dpkg/tmp.ci (Reading database ... 112706 files and directories currently installed.) Preparing to replace gawk 1:3.1.6.dfsg-3 (using .../gawk_1%3a3.1.6.dfsg-3_amd64.deb) ... Unpacking replacement gawk ... dpkg-deb: --fsys-tarfile /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb Processing triggers for man-db ... Setting up gawk (1:3.1.6.dfsg-3) ... dpkg-deb: --control -- /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb /tmp/zXWUaWyjbb/DEBIAN Unexpected number of arguments to --control debsums: can't extract control info from /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb E: Problem executing scripts DPkg::Post-Invoke 'if [ -x /usr/bin/debsums ]; then /usr/bin/debsums --generate=nocheck -sp /var/cache/apt/archives; fi' E: Sub-process returned an error code 25/100/1 r...@kiva6:pts/ttyp4 12:26:25 [~] # Without ia32-apt-get installed, it looks like this: 55/0/0 r...@kiva6:pts/ttyp4 12:50:25 [~] # apt-get install --reinstall gawk Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 1 not upgraded. Need to get 0B/769kB of archives. After this operation, 0B of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... 112682 files and directories currently installed.) Preparing to replace gawk 1:3.1.6.dfsg-3 (using .../gawk_1%3a3.1.6.dfsg-3_amd64.deb) ... Unpacking replacement gawk ... Processing triggers for man-db ... Setting up gawk (1:3.1.6.dfsg-3) ... localepurge: Disk space freed in /usr/share/locale: 580K 56/0/0 r...@kiva6:pts/ttyp4 12:50:36 [~] # So the culprit is ia32-apt-get. BTW, to reproduce the behaviour, it suffices to only call /usr/bin/debsums --generate=nocheck -sp /var/cache/apt/archives 29/0/1 r...@kiva6:pts/ttyp4 12:28:32 [~] # /usr/bin/debsums --generate=nochecksp /var/cache/apt/archives dpkg-deb: --control -- /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb /tmp/8uRFCniM8U/DEBIAN Unexpected number of arguments to --control debsums: can't extract control info from /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb 30/2/1 r...@kiva6:pts/ttyp4 12:30:05 [~] # I just ran it in the perl debugger with a break point a line 491 (the only occurance of "--control", and as you said without "--"): DB<6> b 491 DB<7> c main::(/usr/bin/debsums:491): system 'dpkg', '--control', $deb, $control main::(/usr/bin/debsums:492): and die "$self: can't extract control info from $deb\n"; DB<7> x $deb 0 '/var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb' DB<8> x $control 0 '/tmp/5xGtL9Zd8N/DEBIAN' DB<9> s dpkg-deb: --control -- /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb /tmp/5xGtL9Zd8N/DEBIAN Unexpected number of arguments to --control debsums: can't extract control info from /var/cache/apt/archives/gawk_1%3a3.1.6.dfsg-3_amd64.deb at /usr/bin/debsums line 491 File::Temp::CODE(0xbe0b10)(/usr/share/perl/5.10/File/Temp.pm:866): 866: cleanup(); DB<9> Then I noticed that ia32-apt-get not only diverts apt-get but also dpkg-deb: 57/0/0 r...@kiva6:pts/ttyp4 12:52:15 [~] # dpkg -S /usr/bin/dpkg-deb diversion by ia32-apt-get from: /usr/bin/dpkg-deb diversion by ia32-apt-get to: /usr/bin/dpkg-deb.real dpkg, ia32-apt-get: /usr/bin/dpkg-deb 58/0/0 r...@kiva6:pts/ttyp4 12:53:29 [~] # And a look in this script reveals: ---snip--- #!/bin/sh set -e echo >&2 "dpkg-deb: $*" case "$1" in (--control) if ! [ $# = 3 ]; then echo >&2 "Unexpected number of arguments to --control" exit 1; fi [...] ---snap-- This is at least where the error message comes from. So debsums calls "dpkg --control $deb $control", dpkg calls dpkg-deb since 1.15.1 with an additional "--" (see #293163 or the changelog of dpkg 1.15.1) and dpkg-deb is the diversion of ia32-apt-get which doesn't cope with the additional "--". A workaround would be to call dpkg-deb directly, but this is definitely a bug in ia32-apt-get. I will soon reassign this bug appropriately to ia32-apt-get with additional informations for the ia32-apt-get maintainers. Thanks for your patience and help to locate this problem. Regards, Axel -- Axel Beckert - [email protected], [email protected] - http://noone.org/abe/ -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
