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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sat, 8 Jan 2011 16:30:59 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/kern imgact_elf.c
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kib         2011-01-08 16:30:59 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             imgact_elf.c 
  Log:
  SVN rev 217152 on 2011-01-08 16:30:59Z by kib
  
  In elf image activator, read and apply the stack protection mode from
  PT_GNU_STACK program header, if present and enabled. Two new sysctls
  are provided, kern.elf32.nxstack and kern.elf64.nxstack, that allow to
  enable PT_GNU_STACK for ABIs of specified bitsize, if ABI decided to
  support shared page.
  
  Inform rtld about access mode of the stack initial mapping by
  AT_STACKPROT aux vector.
  
  At the moment, the default is disabled, waiting for the usermode
  support bits.
  
  Revision  Changes    Path
  1.213     +17 -5     src/sys/kern/imgact_elf.c