cvs commit: src/sys/kern kern_jail.c src/sys/sys jail.h

[Pawel Jakub Dawidek]

pjd         2007-04-05 23:19:13 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_jail.c 
    sys/sys              jail.h 
  Log:
  Implement functionality I called 'jail services'.
  
  It may be used for external modules to attach some data to jail's in-kernel
  structure.
  
  - Change allprison_mtx mutex to allprison_sx sx(9) lock.
    We will need to call external functions while holding this lock, which may
    want to allocate memory.
    Make use of the fact that this is shared-exclusive lock and use shared
    version when possible.
  - Implement the following functions:
    prison_service_register() - registers a service that wants to be noticed
          when a jail is created and destroyed
    prison_service_deregister() - deregisters service
    prison_service_data_add() - adds service-specific data to the jail structure
    prison_service_data_get() - takes service-specific data from the jail
          structure
    prison_service_data_del() - removes service-specific data from the jail
          structure
  
  Reviewed by:    rwatson
  
  Revision  Changes    Path
  1.65      +244 -27   src/sys/kern/kern_jail.c
  1.29      +19 -1     src/sys/sys/jail.h