[Bug 217676] [DRI3] x11/libxshmfence: switch to /tmp for named shared memory mappings

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217676

--- Comment #6 from commit-hook at freebsd.org ---
A commit references this bug:

Author: jbeich
Date: Thu Jul  6 03:02:59 UTC 2017
New revision: 445125
URL: https://svnweb.freebsd.org/changeset/ports/445125

Log:
  MFH: r445016

  x11/libxshmfence: don't leak /tmp/shmfd* files with O_CLOEXEC

  - Both mkostemp() and mkstemp() need explicit call to unlink()
  - Unobfuscate fallback if both O_TMPFILE and mksotemp() are N/A
  - O_TMPFILE (Linux-only) appeared after O_CLOEXEC, no need to check

  PR:           217676 (for tracking)
  Approved by:  ports-secteam (junovitch)

Changes:
_U  branches/2017Q2/
  branches/2017Q2/x11/libxshmfence/Makefile
  branches/2017Q2/x11/libxshmfence/files/patch-src__xshmfence_alloc.c

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