cvs commit: src/sys/cam/scsi scsi_target.c src/sys/coda coda_fbsd.c src/sys/dev/firewire firewirereg.h fwdev.c src/sys/dev/nmdm nmdm.c src/sys/dev/snp snp.c src/sys/dev/sound/pcm dsp.c mixer.c src/sys/dev/vkbd vkbd.c ...

Robert Watson rwatson at
Sat Aug 13 21:24:19 GMT 2005

rwatson     2005-08-13 21:24:18 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_6)
    sys/cam/scsi         scsi_target.c 
    sys/coda             coda_fbsd.c 
    sys/dev/firewire     firewirereg.h fwdev.c 
    sys/dev/nmdm         nmdm.c 
    sys/dev/snp          snp.c 
    sys/dev/sound/pcm    dsp.c mixer.c 
    sys/dev/vkbd         vkbd.c 
    sys/fs/devfs         devfs_devs.c devfs_vnops.c 
    sys/kern             kern_conf.c tty_pty.c tty_tty.c 
    sys/net              bpf.c if_tap.c if_tun.c 
    sys/netsmb           smb_dev.c 
    sys/security/mac     mac_vfs.c 
    sys/security/mac_biba mac_biba.c 
    sys/security/mac_lomac mac_lomac.c 
    sys/security/mac_mls mac_mls.c 
    sys/security/mac_stub mac_stub.c 
    sys/security/mac_test mac_test.c 
    sys/sys              conf.h mac.h mac_policy.h 
  Merge two sets of changes relating to devfs device node cloning from
  HEAD to RELENG_6: changes to introduce a credentialed version of the
  clone event handler, and then changes to merge the regular and
  credentialed versions into a single interface (along with updates to
  existing consumers).  With this merge, 6.x and 7.x are in sync.
  First batch merges devfs_devs.c:1.37, devfs_vnops.c:1.115,
  kern_conf.c:1.187, tty_pty.c:1.138, mac_vfs.c:1.109, mac_biba.c:1.36,
  mac_lomac.c:1.36, mac_mls.c:1.73, mac_stub.c:1.53, mac_test.c:1.61,
  conf.h:1.223, mac.h:1.68, mac_policy.h:1.67 from HEAD to RELENG_6:
    When devfs cloning takes place, provide access to the credential of the
    process that caused the clone event to take place for the device driver
    creating the device.  This allows cloned device drivers to adapt the
    device node based on security aspects of the process, such as the uid,
    gid, and MAC label.
    - Add a cred reference to struct cdev, so that when a device node is
      instantiated as a vnode, the cloning credential can be exposed to
    - Add make_dev_cred(), a version of make_dev() that additionally
      accepts the credential to stick in the struct cdev.  Implement it and
      make_dev() in terms of a back-end make_dev_credv().
    - Add a new event handler, dev_clone_cred, which can be registered to
      receive the credential instead of dev_clone, if desired.
    - Modify the MAC entry point mac_create_devfs_device() to accept an
      optional credential pointer (may be NULL), so that MAC policies can
      inspect and act on the label or other elements of the credential
      when initializing the skeleton device protections.
    - Modify tty_pty.c to register clone_dev_cred and invoke make_dev_cred(),
      so that the pty clone credential is exposed to the MAC Framework.
    While currently primarily focussed on MAC policies, this change is also
    a prerequisite for changes to allow ptys to be instantiated with the UID
    of the process looking up the pty.  This requires further changes to the
    pty driver -- in particular, to immediately recycle pty nodes on last
    close so that the credential-related state can be recreated on next
    Submitted by:   Andrew Reisse <andrew.reisse at>
    Obtained from:  TrustedBSD Project
    Sponsored by:   SPAWAR, SPARTA
  Second batch merges scsi_target.c:1.68, coda_fbsd.c:1.43,
  firewirereg.h:1.38, fwdev.c:1.47, nmdm.c:1.36, snp.c:1.100, dsp.c:1.82,
  mixer.c:1.45, vkbd.c:1.9, devfs_vnops.c:1.117, tty_pty.c:1.139,
  tty_tty.c:1.57, bpf.c:1.156, if_tap.c:1.56, if_tun.c:1.153,
  smb_dev.c:1.28, conf.h:1.224 from HEAD to RELENG_6:
    Merge the dev_clone and dev_clone_cred event handlers into a single
    event handler, dev_clone, which accepts a credential argument.
    Implementors of the event can ignore it if they're not interested,
    and most do.  This avoids having multiple event handler types and
    fall-back/precedence logic in devfs.
    This changes the kernel API for /dev cloning, and may affect third
    party packages containg cloning kernel modules.
    Requested by:   phk
  These changes modifies the kernel device driver API for device cloning,
  and might require minor modifications to third party device drivers that
  make use of devfs cloning.  It will not be merged to RELENG_5.
  Approved by:    re (scottl)
  Revision   Changes    Path   +4 -3      src/sys/cam/scsi/scsi_target.c   +4 -3      src/sys/coda/coda_fbsd.c   +1 -1      src/sys/dev/firewire/firewirereg.h   +2 -1      src/sys/dev/firewire/fwdev.c   +2 -1      src/sys/dev/nmdm/nmdm.c   +3 -2      src/sys/dev/snp/snp.c   +2 -1      src/sys/dev/sound/pcm/dsp.c   +2 -1      src/sys/dev/sound/pcm/mixer.c    +4 -2      src/sys/dev/vkbd/vkbd.c   +2 -1      src/sys/fs/devfs/devfs_devs.c  +2 -1      src/sys/fs/devfs/devfs_vnops.c  +40 -5     src/sys/kern/kern_conf.c  +7 -6      src/sys/kern/tty_pty.c   +2 -1      src/sys/kern/tty_tty.c  +3 -2      src/sys/net/bpf.c   +4 -2      src/sys/net/if_tap.c  +4 -2      src/sys/net/if_tun.c   +2 -1      src/sys/netsmb/smb_dev.c  +7 -2      src/sys/security/mac/mac_vfs.c   +2 -2      src/sys/security/mac_biba/mac_biba.c   +2 -2      src/sys/security/mac_lomac/mac_lomac.c   +2 -2      src/sys/security/mac_mls/mac_mls.c   +2 -2      src/sys/security/mac_stub/mac_stub.c   +5 -2      src/sys/security/mac_test/mac_test.c  +6 -1      src/sys/sys/conf.h   +2 -2      src/sys/sys/mac.h   +5 -1      src/sys/sys/mac_policy.h

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