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From: Arthur Krewat <krewat@kilonet.net>
To: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] buffer overflow (Re: Happy birthday Morris worm
Date: Tue, 12 Nov 2019 18:27:02 -0500	[thread overview]
Message-ID: <924b516f-6c52-fcce-f004-5f4faaf445c7@kilonet.net> (raw)
In-Reply-To: <CANCZdfrnOfxV-TP09Ye15FVLKuZAAudEd=FQ-iULgE1js4ra4Q@mail.gmail.com>


On 11/12/2019 6:22 PM, Warner Losh wrote:
> strncpy has two issues. First, it doesn't guarantee NUL termination. 
> Second, it always writes N bytes. It's for a fixed width data field, 
> not a variable length string whose buffer size is known. strlcpy is 
> much better, but still has some issues...
Maybe he meant strcpy_s()

  reply	other threads:[~2019-11-12 23:27 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-12 20:56 [TUHS] " Norman Wilson
2019-11-12 22:00 ` Dave Horsfall
2019-11-12 22:10 ` [TUHS] buffer overflow (Re: " Bakul Shah
2019-11-12 22:14   ` Larry McVoy
2019-11-12 22:41     ` Robert Clausecker
2019-11-12 22:49       ` Arthur Krewat
2019-11-12 23:45       ` Jon Steinhart
2019-11-13  0:38         ` Warren Toomey
2019-11-13  1:09         ` Arthur Krewat
2019-11-13  0:24       ` Larry McVoy
2019-11-12 22:54   ` Dave Horsfall
2019-11-12 23:22     ` Warner Losh
2019-11-12 23:27       ` Arthur Krewat [this message]
     [not found]     ` <alpine.DEB.2.20.1911191443530.10845@grey.csi.cam.ac.uk>
2019-11-21 20:02       ` Dave Horsfall
2019-11-21 20:38         ` Warner Losh
2019-11-21 21:04           ` Clem Cole
2019-11-21 22:06           ` Dave Horsfall
2019-11-21 21:48         ` Steffen Nurpmeso
2019-11-13  7:35 ` [TUHS] " arnold
2019-11-13 18:02   ` [TUHS] Happy birthday Morris worm [ really programming education ] Jon Steinhart
2019-11-13 18:49     ` Tyler Adams
2019-11-13 19:15     ` [TUHS] #defines and enums ron
2019-11-13 21:11       ` Warner Losh
2019-11-13 21:22     ` [TUHS] Happy birthday Morris worm [ really programming education ] Chet Ramey
2019-11-15 22:49     ` Adam Thornton
2019-11-15 23:59       ` Theodore Y. Ts'o
2019-11-12 22:39 [TUHS] buffer overflow (Re: Happy birthday Morris worm Norman Wilson
2019-11-13  1:43 ` John P. Linderman
2019-11-21 13:10   ` William Cheswick
2019-11-21 18:04     ` Steve Johnson
2019-11-21 21:51       ` John P. Linderman

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