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On Thu, 2011-06-30 at 11:05 -0400, Ken Brown wrote: > On 6/30/2011 9:37 AM, Corinna Vinschen wrote: > > On Jun 30 14:43, Wolf Geldmacher wrote: > >> Dear all, > >> > >> just joining after being hit by an obviously known issue: > >> > >> Running tar (in my case to extract openssl-0.9.8r.tar.gz) results in > >> symbolic links being randomly substituted by zero length mode 0 files as > >> described in http://sourceware.org/ml/cygwin/2011-04/msg00299.html. > >> > >> For me this happens on both Windows 7 and Windows Server 2008. > >> > >> The interesting (new?) tidbit: > >> > >> In sheer desparation I downgraded from cygwin1.dll/1.7.9.1 to > >> cygwin1.ddl/1.7.8.1 via setup.exe and the issue seems to be gone. > >> > >> As this is the only change I made: Is it possible that the problem is > >> not an issue with tar (as discussed on the mailing list) but in fact a > >> regression in cygwin1.dll? > > > > I never saw this happen. Therefore, somebody actually seeing this > > problem has to debug it. The least I need is an strace. > > I'm not sure it needs further debugging. The patch to tar given in > > http://cygwin.com/ml/cygwin/2011-04/msg00385.html > > solves the problem. Eric said (in the next message) that he will apply > this to the next release of tar. In the meantime, it's easy to download > the tar source, apply the patch, and rebuild. I'm afraid this might only solve a symptom and not fix the root cause. Anyways, pls find attached two (rather big and therefore gzip'd) script files with: - cygcheck -srv output, - strace of the tar command (succeeding for 1.7.8, failing for 1.7-9), - ls -lR of the resulting directory hierarchy of a tar archive that has a src directory with 100 files and a tgt directory with symlinks to the files in ../src. The archive was created via: mkdir symlinks symlinks/src symlinks/tgt cd symlinks/src let i=0 while [ $i -lt 100 ]; do j=`printf '%03d' $i`; echo $j > $j; let i=$((i+1)) done cd ../tgt ln -s ../src/* . cd ../.. tar czvf symlinks.tar.gz symlinks Regards, Wolf
Attachment:
typescript-1.7.8.1.gz
Description: GNU Zip compressed data
Attachment:
typescript-1.7.9.1.gz
Description: GNU Zip compressed data
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