Date: Mon, 23 Sep 2002 03:00:08 -0700 (PDT) From: Maxim Konovalov <maxim@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/41792: lseek after ftruncate fails Message-ID: <200209231000.g8NA08UN032576@freefall.freebsd.org>
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The following reply was made to PR misc/41792; it has been noted by GNATS. From: Maxim Konovalov <maxim@FreeBSD.org> To: Yury Izrailevsky <izrailev@yahoo.com> Cc: bug-followup@FreeBSD.org Subject: Re: misc/41792: lseek after ftruncate fails Date: Mon, 23 Sep 2002 13:59:50 +0400 (MSD) Hello, [...] > >Environment: > FreeBSD 4.6.1-RELEASE-p10 > >Description: > File operation problem. Running the following: > > write(fd, buffer, 8K); > ftruncate(fd, 0); > write(fd, buffer, 1); > off = lseek(fd, 0, SEEK_END); > printf("%d", off); > > Output: 24576, expected: 1. Can't reproduce on 4.6-STABLE: $ uname -a FreeBSD golf.macomnet.net 4.6-20020805-MACOMNET-STABLE FreeBSD 4.6-20020805-MACOMNET-STABLE #19: Fri Sep 20 17:09:52 MSD 2002 maxim@golf.macomnet.net:/usr/obj/usr/src/sys/GOLF i386 $ rm test.file $ ./trunc file offset=1, expected 1 $ ls -l test.file -rw-r--r-- 1 maxim staff 1 23 ΣΕΞ 13:55 test.file $ > The size of the actual file is 1 (if you ls -l on it). However, > lseek goes way past it... > > Noticed this while running connectathon rewind test (part of special > test suite). But fails even if don't go over NFS but just run on the > local file system. > > I suspect the problem is with the FS cache. Or perhaps lseek and/or > ftruncate are just broken... [...] -- Maxim Konovalov, maxim@FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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