Log Message:
lsof: update to 4.91

o Change license to purdue (renamed from abell-94)
o ChangeLog:
4.90    February 14, 2018

    !!!NOTE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    !                                                        !
    !   It is likely that this is the last lsof revision I   !
    !   will issue, unless serious bugs are detected,  Stay  !
    !   tuned to lsof-l for information about future support !
    !   of lsof.                                             !
    !                                                        !
    !   I thank all the many contributors to lsof over the   !
    !   many years (20+?) I have been distributing lsof      !
    !   versions 1, 2, 3 and 4.                              !
    !                                                        !
    !   Vic Abell <abe@purdue.edu>                           !
    !                                                        !
    !!!NOTE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    Taught the Configure script to create a dummy opt_random.h
    for FreeBSD systems whose <sys/random.h> includes it.

    Added support for the FreeBSD ZFUSE file system.

    Corrected the quoting in a Darwin putchar() statement in the
    dfile.c source file.  Andrew Janke <floss@apjanke.net> reported
    my error.

    Added support for the FreeBSD DTYPE_PTS file descriptor and
    for unknown descriptors that reference the kernel's badfileops
    operation switch.  Enabled FreeBSD 12.0 support. Tested the
    changes on systems provided by Larry Rosenman <ler@lerctr.org>.

    Enhanced -K option with the form "-K i" to direct lsof to
    (i)gnore tasks.  A query from Rachel Kroll <rkroll@fb.com>
    suggested this option.  Linux task reports now include both
    process and task command names, making lsof's "-c <name>"
    option work correctly.

    Added a patch to prevent NFS blocking in Linux supplied by
    Kristna Streitov <kstreitova@suse.com>.

    Installed a FreeBSD patch that prevents examining a TCP state
    structure during a race condition.  The patch was supplied by
    Bryan Drewery <bdrewery@FreeBSD.org>.

    Updated FreeBSD for new UFS inode structure that lacks an i_dev
    member in the most recent 12.0-CURRENT.  Larry Rosenman
    <ler@lerctr.org> reported the problem and provided a test
    system.

    Added "#define KLD_MODULE" to dlsof.h and dnode2.c to prevent
    <machine/cpuconf.h> from generating an "ARM_NARCH is 0" error.
    This is needed so lsof can access kernel structures.  Larry
    Rosenman supplied the addition.

    Added recognition of the FreeBSD 11 file system name "nullfs".
    Jamie Landeg-Jones <jamie@catflap.org> supplied the fix.

    Added a patch from Larry Rosenman <ler@lerctr.org> that is
    needed on FreeBSD 12 so the lsof compilation can obtain the
    inpcb and tcpcb structures from their respective header files.

    Updated FreeBSD dmnt.c for the ino64 changes.

    Inserted a patch for Solaris 12.x to avoid compilation errors
    from <sys/aio_req.h>, based on information provided by Jorn
    Clausen <joern.clausen@uni-bielefeld.de>.  Jorn tested the
    patch.

    Added performance enhancement that uses the FreeBSD closefrom()
    and dup2() C library functions when available.  The enhancement
    was supplied by Conrad Meyer <cem@freebsd.org>.

    Corrected FreeBSD lsof's gathering of ZFS file device numbers.

    Updated lsof test library for FreeBSD.

    Updated socket optons information collection from the socket
    structure per changes supplied by Gleb Smirnoff
    <glebius@FreeBSD.org>.

    Added patch to dlsof.h that avoids a _KERNEL conflict with
    bzero.  Mateusz Guzik <mjguzik@gmail.com> supplied the patch.

    Corrected test library to handle 64 bit FreeBSD device numbers.

    Added #defines for FreeBSD 12, src r324225, from Gleb Smirnoff
    <glebius@FreeBSD.org>.

    Incorporated Linux pseudoterminal endpoint processing (+|-E)
    provided by Masatake YAMATO <yamato@redhat.com> with access to
    test systems provided by Peter Schiffer <pschiffe@redhat.com>.

    Corrected Linux command extraction for commands that include
    parentheses -- e.g., "(sd-pam)".

4.91    March 26, 2018

    A bug has been reported in the PTY endpoint processing of
    Linux lsof 4.90 by Peter Wu <peter@lekensteyn.nl>, making it
    necessary for me to release another revision of lsof.

    This revision applies two fixes that correct the Linux PTY
    endpoint processing bug. Masatake YAMATO <yamato@redhat.com>
    supplied the fixes.