• Cyrill Gorcunov's avatar
    procfs: add ability to plug in auxiliary fdinfo providers · 55985dd7
    Cyrill Gorcunov authored
    This patch brings ability to print out auxiliary data associated with
    file in procfs interface /proc/pid/fdinfo/fd.
    
    In particular further patches make eventfd, evenpoll, signalfd and
    fsnotify to print additional information complete enough to restore
    these objects after checkpoint.
    
    To simplify the code we add show_fdinfo callback inside struct
    file_operations (as Al and Pavel are proposing).
    Signed-off-by: default avatarCyrill Gorcunov <gorcunov@openvz.org>
    Acked-by: default avatarPavel Emelyanov <xemul@parallels.com>
    Cc: Oleg Nesterov <oleg@redhat.com>
    Cc: Andrey Vagin <avagin@openvz.org>
    Cc: Al Viro <viro@ZenIV.linux.org.uk>
    Cc: Alexey Dobriyan <adobriyan@gmail.com>
    Cc: James Bottomley <jbottomley@parallels.com>
    Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
    Cc: Alexey Dobriyan <adobriyan@gmail.com>
    Cc: Matthew Helsley <matt.helsley@gmail.com>
    Cc: "J. Bruce Fields" <bfields@fieldses.org>
    Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
    Cc: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    55985dd7
fd.c 8.01 KB