On Tue, 23 May 2006, David Miller wrote:
From: Jurij Smakov <jurijus@xxxxxxxxx>
Date: Tue, 23 May 2006 21:33:25 -0700 (PDT)
FWIW, I have just reproduced the problem on my Ultra5 running 2.6.17-rc4
by trying to install KDE and all dependencies :-(.
How exactly does dpkg access these files (particularly the 'status'
file)? It is just normal reads and writes, or does it use mmap()?
From a quick look at the code (dpkg-1.13.19), it appears that the status
file is mmap'ed for reading with
mmap(NULL, stat.st_size, PROT_READ, MAP_SHARED, fd, 0)
at lib/parse.c:114. When the database is written to disk, it is
constructed line by line, which are written out to disk using fputs()
at lib/dump.c:306. The file is fflush'ed and fsync'ed after writing.
Best regards,
Jurij Smakov jurij@xxxxxxxxx
Key: http://www.wooyd.org/pgpkey/ KeyID: C99E03CC
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