On 12/20/2013 08:50 PM, Colin Walters wrote:
On Thu, 2013-12-19 at 14:20 +0100, Florian Weimer wrote:
readdir_r is rather broken on Linux because there are some directories
it cannot read.
Citation? Are you talking about
http://womble.decadent.org.uk/readdir_r-advisory.html
?
Partly, yes. Current glibc documentation has this to say:
<https://sourceware.org/git/?p=glibc.git;a=blob;f=manual/filesys.texi;h=1cac45393d554a7a6a83c184262e2ce0be7c8885;hb=HEAD#l495>
(Disclaimer: I helped to write these paragraphs. Also see the comments
about NAME_MAX in conf.texi.)
Previous glibc versions truncated the buffer so that it wasn't
necessarily NUL-terminated, or had a buffer overflow (on certain
non-mainstream architectures). readdir_r also makes an necessary copy
of the dirent struct.
--
Florian Weimer / Red Hat Product Security Team
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