From: Patrick McHardy <kaber@trash.net>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: Eric Leblond <eric@inl.fr>, netfilter-devel@vger.kernel.org
Subject: Re: [PATCH 3/4] netfilter: print the list of register loggers.
Date: Mon, 16 Feb 2009 18:11:15 +0100 [thread overview]
Message-ID: <49999E33.9070307@trash.net> (raw)
In-Reply-To: <alpine.LSU.2.00.0902161753530.26651@fbirervta.pbzchgretzou.qr>
Jan Engelhardt wrote:
> The seqprinting (knowingly that I suggested it) has a bit of a drawback
> the way you use it -- if userspace passes a buffer of, say, size 11,
> then the first seq_printf will succeed in stuffing " 1 NONE (" into
> the buffer; it then has 2 left. Because t->name is probably more descriptive
> than that, the second seq_printf will fail, breaking out of the loop,
> calling seq_stop, etc. and userspace gets 9 as the return value for
> the read() it attempted. However, when userspace now tries to read()
> again, as it is absolutely entitled to, the " 1 NONE (" will be printed
> again into the buffer -- which is rather undesirable.
> ...
> Maybe the authors of seq_file can offer some better function that
> takes care of this?
seqfile operates on records not characters and always provides
one page of memory.
next prev parent reply other threads:[~2009-02-16 17:11 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-02 17:04 [netfilter 0/5] nf_log refactoring Eric Leblond
2009-01-02 17:07 ` [PATCH 1/5] netfilter: use a linked list of loggers Eric Leblond
2009-01-02 17:07 ` [PATCH 2/5] netfilter: suppress nf_log_unregister_pf function Eric Leblond
2009-01-02 17:07 ` [PATCH 3/5] netfilter: convert logger modules to new API Eric Leblond
2009-01-07 7:17 ` Eric Leblond
2009-01-07 20:05 ` [PATCH 1/6] netfilter: use a linked list of loggers Eric Leblond
2009-01-07 20:05 ` [PATCH 2/6] netfilter: suppress nf_log_unregister_pf function Eric Leblond
2009-01-07 20:05 ` [PATCH 3/6] netfilter: bind at registration if no logger is already set Eric Leblond
2009-01-07 20:05 ` [PATCH 4/6] netfilter: convert logger modules to new API Eric Leblond
2009-01-07 23:53 ` Jan Engelhardt
2009-01-07 20:05 ` [PATCH 5/6] netfilter: print the list of register loggers Eric Leblond
2009-01-07 23:56 ` Jan Engelhardt
2009-01-08 22:01 ` [PATCH 0/6] rework of nf_log refactoring Eric Leblond
2009-01-08 22:03 ` [PATCH 1/6] netfilter: use a linked list of loggers Eric Leblond
2009-01-08 22:03 ` [PATCH 2/6] netfilter: suppress nf_log_unregister_pf function Eric Leblond
2009-01-08 22:03 ` [PATCH 3/6] netfilter: bind at registration if no logger is already set Eric Leblond
2009-01-08 22:03 ` [PATCH 4/6] netfilter: convert logger modules to new API Eric Leblond
2009-01-08 22:03 ` [PATCH 5/6] netfilter: print the list of register loggers Eric Leblond
2009-01-08 22:03 ` [PATCH 6/6] netfilter: sysctl support of logger choice Eric Leblond
2009-01-12 7:14 ` [PATCH] netfilter: desactivate nf_log logger via sysctl Eric Leblond
2009-02-09 17:43 ` [PATCH 0/6] rework of nf_log refactoring Patrick McHardy
2009-02-09 21:08 ` Eric Leblond
2009-02-09 21:11 ` [PATCH 1/7] netfilter: use a linked list of loggers Eric Leblond
2009-02-11 14:13 ` Patrick McHardy
2009-02-15 12:33 ` Eric Leblond
2009-02-15 12:37 ` [PATCH 1/4] " Eric Leblond
2009-02-18 16:08 ` Patrick McHardy
2009-02-15 12:37 ` [PATCH 2/4] netfilter: suppress now unused nf_log_unregister_pf() function Eric Leblond
2009-02-18 16:10 ` Patrick McHardy
2009-02-15 12:37 ` [PATCH 3/4] netfilter: print the list of register loggers Eric Leblond
2009-02-16 17:01 ` Jan Engelhardt
2009-02-16 17:11 ` Patrick McHardy [this message]
2009-02-15 12:37 ` [PATCH 4/4] netfilter: sysctl support of logger choice Eric Leblond
2009-02-18 15:56 ` Patrick McHardy
2009-02-19 20:59 ` Eric Leblond
2009-02-19 21:02 ` Patrick McHardy
2009-02-19 21:52 ` Eric Leblond
2009-02-19 21:54 ` [PATCH 1/3] netfilter: use a linked list of loggers Eric Leblond
2009-03-16 13:54 ` Patrick McHardy
2009-02-19 21:54 ` [PATCH 2/3] netfilter: print the list of register loggers Eric Leblond
2009-03-16 13:56 ` Patrick McHardy
2009-02-19 21:54 ` [PATCH 3/3] netfilter: sysctl support of logger choice Eric Leblond
2009-03-16 13:58 ` Patrick McHardy
2009-03-17 23:15 ` Eric Leblond
2009-03-17 23:27 ` [PATCH] " Eric Leblond
2009-03-19 9:45 ` Patrick McHardy
2009-03-19 21:46 ` Eric Leblond
2009-03-23 12:17 ` Patrick McHardy
2009-02-09 21:11 ` [PATCH 2/7] netfilter: suppress nf_log_unregister_pf function Eric Leblond
2009-02-09 21:11 ` [PATCH 3/7] netfilter: bind at registration if no logger is already set Eric Leblond
2009-02-09 21:11 ` [PATCH 4/7] netfilter: convert logger modules to new API Eric Leblond
2009-02-09 21:11 ` [PATCH 5/7] netfilter: print the list of register loggers Eric Leblond
2009-02-09 21:11 ` [PATCH 6/7] netfilter: sysctl support of logger choice Eric Leblond
2009-02-11 14:21 ` Patrick McHardy
2009-02-09 21:11 ` [PATCH 7/7] netfilter: fix nflog timeout handling Eric Leblond
2009-02-11 14:33 ` Patrick McHardy
2009-01-07 20:05 ` [PATCH 6/6] netfilter: sysctl support of logger choice Eric Leblond
2009-01-02 17:07 ` [PATCH 4/5] netfilter: print the list of register loggers Eric Leblond
2009-01-02 17:07 ` [PATCH 5/5] netfilter: sysctl support of logger choice Eric Leblond
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