Re: [RFC] [PATCH 0/7] Some basic vserver infrastructure

[Sam Vilain <sam@vilain.net>]

Sam Vilain wrote:

>Using the term "task_ns" and ID term "nsid":
>
>  CONFIG_TASK_NS - config option
>  typedef unsigned int nsid_t;
>  struct task_ns
>  task_struct->task_ns
>  task_struct->nsid
>  task_nsid(struct task*) - get an NSID from a task_struct
>  current_nsid - get NSID for current
>  task_ns_state(struct task_ns*, TASK_NS_STATE_FOO) - does task_ns hav...
>  create_task_ns - creates a new context and "hashes" it
>  lookup_task_ns - lookup a task_ns by nsid
>  get_task_ns - increase refcount of a task_ns
>     [...]
>  release_task_ns - decrease the process count for a task_ns
>  task_get_task_ns - like get_task_ns, but by process
>  task_ns_migrate_task - join task to a task_ns
>  task_ns_printk - debugging printk (for CONFIG_TASK_NS_DEBUG)
>  task_ns_hist_alloc_task_ns - history tracing (for CONFIG_TASK_NS_HI...
>  constants:
>     TASK_NS_STATE_FOO - state bits
>     TASK_NS_FLAG_FOO - task_ns flags (to select features)
>     TASK_NS_CAP_FOO - task_ns-specific capabilities
>     TASK_NS_CMD_get_version - task_ns subcommand names
>     TASK_NS_VCI_VERSION
>  
>

One more (apparently suggested by Eric Biederman, though perhaps he had
different ideas about what it would look like)

  CONFIG_SPACE - config option
  typedef unsigned int space_t;
  struct space_info;
  task_struct->space
  task_struct->space_id
  task_space_id(struct task*) - get an SPACE_ID from a task_struct
  current_space_id - get SPACE_ID for current
  space_info_state(struct space_info*, TASK_SPACE_STATE_FOO) - does ...
  create_space - creates a new space and "hashes" it
  lookup_space - lookup a space_info by space_id
  get_space_info - increase refcount of a space_info
  put_space_info - decrease refcount of a space_info
     [...]
  grab_space - increase the process count for a space
  release_space - decrease the process count for a space
  task_get_space_info - like get_space_info, but by process
  space_migrate_task - join task to a space
  space_printk - debugging printk (for CONFIG_SPACE_DEBUG)
  space_hist_alloc_space - history tracing (for CONFIG_SPACE_HI...
  constants:
     SPACE_STATE_FOO - state bits
     SPACE_FLAG_FOO - task_ns flags (to select features)
     SPACE_CAP_FOO - task_ns-specific capabilities
     SPACE_CMD_get_version - task_ns subcommand names
     SPACE_SYSCALL_VERSION


Something like that, anyway.  I must admit "Task Spaces" sounds a little
less dorky than "Task Namespaces", but doesn't roll off the tongue that
well because of the '-sk s..' combination.

Anyone?

Sam.