• Eric W. Biederman's avatar
    [PATCH] pid: implement signal functions that take a struct pid * · c4b92fc1
    Eric W. Biederman authored
    Currently the signal functions all either take a task or a pid_t argument.
    This patch implements variants that take a struct pid *.  After all of the
    users have been update it is my intention to remove the variants that take a
    pid_t as using pid_t can be more work (an extra hash table lookup) and
    difficult to get right in the presence of multiple pid namespaces.
    
    There are two kinds of functions introduced in this patch.  The are the
    general use functions kill_pgrp and kill_pid which take a priv argument that
    is ultimately used to create the appropriate siginfo information, Then there
    are _kill_pgrp_info, kill_pgrp_info, kill_pid_info the internal implementation
    helpers that take an explicit siginfo.
    
    The distinction is made because filling out an explcit siginfo is tricky, and
    will be even more tricky when pid namespaces are introduced.
    Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    c4b92fc1
signal.c 66.9 KB