Date: Wed, 29 Jul 2020 21:20:25 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 248335] O_BENEATH leaks information about parent directories Message-ID: <bug-248335-227-GgMesgstIT@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-248335-227@https.bugs.freebsd.org/bugzilla/> References: <bug-248335-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D248335 --- Comment #3 from Konstantin Belousov <kib@FreeBSD.org> --- But user could only guess-check only his own username, no ? O_BENEATH usage was designed to confine existing non-capsicumized apps, whi= ch only need access to the known subset of the whole filesystem namespace.=20 Typical example is compiler which only needs to access source file, hierarc= hies of headers, and write output file. There, we can pre-allocate dirfds for /usr/include and /usr/local/include. On the other hand, build systems often use relative paths with dotdots to express target directory as relative to source, so dotdot support was needed for intended application of our O_BENE= ATH.=20 Anyway, if you can provide somewhat more precise explanation of the desired behavior, and perhaps give the name for the new O_ flag, I will implement i= t as well. --=20 You are receiving this mail because: You are the assignee for the bug.=
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