• Linus Torvalds's avatar
    Merge tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc · e9d488c3
    Linus Torvalds authored
    Pull binfmt_misc update from James Bottomley:
     "This update is to allow architecture emulation containers to function
      such that the emulation binary can be housed outside the container
      itself.  The container and fs parts both have acks from relevant
      experts.
    
      To use the new feature you have to add an F option to your binfmt_misc
      configuration"
    
    From the docs:
     "The usual behaviour of binfmt_misc is to spawn the binary lazily when
      the misc format file is invoked.  However, this doesn't work very well
      in the face of mount namespaces and changeroots, so the F mode opens
      the binary as soon as the emulation is installed and uses the opened
      image to spawn the emulator, meaning it is always available once
      installed, regardless of how the environment changes"
    
    * tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc:
      binfmt_misc: add F option description to documentation
      binfmt_misc: add persistent opened binary handler for containers
      fs: add filp_clone_open API
    e9d488c3
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