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From: Alfred Perlstein <alfred@FreeBSD.org>
Date: Mon, 6 May 2002 12:31:29 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/dev/drm drm_drv.h src/sys/kern kern_descrip.c
         kern_exit.c kern_proc.c subr_log.c subr_witness.c sys_pipe.c tty.c
         uipc_socket.c src/sys/net bpf.c if_tap.c if_tun.c src/sys/sys
         filedesc.h
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alfred      2002/05/06 12:31:29 PDT

  Modified files:
    sys/dev/drm          drm_drv.h 
    sys/kern             kern_descrip.c kern_exit.c kern_proc.c 
                         subr_log.c subr_witness.c sys_pipe.c 
                         tty.c uipc_socket.c 
    sys/net              bpf.c if_tap.c if_tun.c 
    sys/sys              filedesc.h 
  Log:
  Make funsetown() take a 'struct sigio **' so that the locking can
  be done internally.
  
  Ensure that no one can fsetown() to a dying process/pgrp.  We need
  to check the process for P_WEXIT to see if it's exiting.  Process
  groups are already safe because there is no such thing as a pgrp
  zombie, therefore the proctree lock completely protects the pgrp
  from having sigio structures associated with it after it runs
  funsetownlst.
  
  Add sigio lock to witness list under proctree and allproc, but over
  proc and pgrp.
  
  Seigo Tanimura helped with this.
  
  Revision  Changes    Path
  1.4       +1 -1      src/sys/dev/drm/drm_drv.h
  1.145     +45 -26    src/sys/kern/kern_descrip.c
  1.164     +0 -4      src/sys/kern/kern_exit.c
  1.134     +1 -4      src/sys/kern/kern_proc.c
  1.48      +1 -1      src/sys/kern/subr_log.c
  1.114     +1 -0      src/sys/kern/subr_witness.c
  1.106     +1 -1      src/sys/kern/sys_pipe.c
  1.174     +1 -1      src/sys/kern/tty.c
  1.118     +1 -1      src/sys/kern/uipc_socket.c
  1.92      +1 -1      src/sys/net/bpf.c
  1.19      +1 -1      src/sys/net/if_tap.c
  1.106     +1 -1      src/sys/net/if_tun.c
  1.44      +1 -1      src/sys/sys/filedesc.h

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