• Eric W. Biederman's avatar
    proc: fix the threaded /proc/self · c6caeb7c
    Eric W. Biederman authored
    Long ago when the CLONE_THREAD support first went it someone thought it
    would be wise to point /proc/self at /proc/<tgid> instead of /proc/<pid>.
    
    Given that /proc/<tgid> can return information about a very different task
    (if enough things have been unshared) then our current process /proc/<tgid>
    seems blatantly wrong.  So far I have yet to think up an example where the
    current behavior would be advantageous, and I can see several places where
    it is seriously non-intuitive.
    
    We may be stuck with the current broken behavior for backwards
    compatibility reasons but lets try fixing our ancient bug for the 2.6.25
    time frame and see if anyone screams.
    Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
    Acked-by: default avatarIngo Molnar <mingo@elte.hu>
    Cc: "Guillaume Chazarain" <guichaz@yahoo.fr>
    Cc: "Pavel Emelyanov" <xemul@openvz.org>
    Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
    Cc: Oleg Nesterov <oleg@tv-sign.ru>
    Cc: Roland McGrath <roland@redhat.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    c6caeb7c
base.c 67.7 KB