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Re: du no longer handles errors gracefully

From: Andreas Schwab
Subject: Re: du no longer handles errors gracefully
Date: Wed, 08 Nov 2006 11:41:20 +0100
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.50 (gnu/linux)

Jim Meyering <address@hidden> writes:

> Mike Frysinger <address@hidden> wrote:
>> when encountering dirs missing the executable bit, du used to spit out an
>> error but continue on its way ... with the new version though, the error
>> forces premature failure with an helpful message :(
>> for example, this dir structure as a non-root user:
>> rm -rf foo
>> mkdir -p foo/{a,b,c}
>> touch foo/a/asdf
>> here is coreutils-5.94:
>> $ du
>> du: `./b': Permission denied
>> 1       ./c
>> 1       ./a
>> 3       .
>> here is coreutils-6.4:
>> $ du
>> du: fts_read failed: Permission denied
> Thanks for the report, but I cannot reproduce that.
> Here's what I've done (as non-root, with a 2.6.18-based kernel):

I can reproduce that with and  The actual syscall that
fails is openat(5, "..", ...) with fd 5 opened on "b".  Filesystem does
not matter.


Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

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