bsd.own.mk: rename to CC_WNO_ADDRESS_OF_PACKED_MEMBER

Provide a single variable
CC_WNO_ADDRESS_OF_PACKED_MEMBER
with options for both clang and gcc, to replace
CLANG_NO_ADDR_OF_PACKED_MEMBER
CC_NO_ADDR_OF_PACKED_MEMBER
GCC_NO_ADDR_OF_PACKED_MEMBER

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW variables to remove these warnings.

apply to a bunch of the tree. mostly, these are real bugs that
should be fixed, but in many cases, only by removing the 'packed'
attribute from some structure that doesn't really need it. (i
looked at many different ones, and while perhaps 60-80% were
already properly aligned, it wasn't clear to me that the uses
were always coming from sane data vs network alignment, so it
doesn't seem safe to remove packed without careful research for
each affect struct.) clang already warned (and was not erroring)
for many of these cases, but gcc picked up dozens more.

Add new Makefile knob, USE_FORT, which extends USE_SSP by turning on the
FORTIFY_SOURCE feature of libssp, thus checking the size of arguments to
various string and memory copy and set functions (as well as a few system
calls and other miscellany) where known at function entry. RedHat has
evidently built all "core system packages" with this option for some time.

This option should be used at the top of Makefiles (or Makefile.inc where
this is used for subdirectories) but after any setting of LIB.

This is only useful for userland code, and cannot be used in libc or in
any code which includes the libc internals, because it overrides certain
libc functions with macros. Some effort has been made to make USE_FORT=yes
work correctly for a full-system build by having the bsd.sys.mk logic
disable the feature where it should not be used (libc, libssp iteself,
the kernel) but no attempt has been made to build the entire system with
USE_FORT and doing so will doubtless expose numerous bugs and misfeatures.

Adjust the system build so that all programs and libraries that are setuid,
directly handle network data (including serial comm data), perform
authentication, or appear likely to have (or have a history of having)
data-driven bugs (e.g. file(1)) are built with USE_FORT=yes by default,
with the exception of libc, which cannot use USE_FORT and thus uses
only USE_SSP by default. Tested on i386 with no ill results; USE_FORT=no
per-directory or in a system build will disable if desired.

Move back here from gnu/dist/map-mbone now the mrouted license is cleared.

move mbone tools out of basesrc, as they use part of mrouted

fix .PATH to mrouted

branches: 1.5.10; 1.5.12;
use CPPFLAGS instead of CFLAGS

branches: 1.4.2;
Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

New-style RCS ids.

Update to multicast 3.5.

Add license, from OpenBSD.

Move back here from gnu/dist/map-mbone now the mrouted license is cleared.

move mbone tools out of basesrc, as they use part of mrouted

branches: 1.3.2;
Whitespace nits.

branches: 1.2.16;
New-style RCS ids.

Update to multicast 3.5.

- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

branches: 1.27.4;
fixes for GCC 6.4:

mail's execute() needs a volatile for setjmp().

telnet has a missing {} issue.

isdnd's print_config() has a missing/wrong {} issue, and
its p_q931bc() has inconsistent indentation (but not any
actual problem.)

map-mbone's accept_neighbors2() compares a vs. a instead
of a vs. b.

sysinst's pm_cgd_check() has missing {} issue.

timed's main() has missing {} issue.

Missed another main() prototype.

include sys/cdefs.h so that __attribute__ can be fixed later

branches: 1.24.4;
Pull in ctype.h after it was removed from 'defs.h' in previous commit
to src/usr.sbin/mrouted.

change (mostly) int to socklen_t. GCC 4 doesn't like that int and
socklen_t are different signness.

Add (unsigned char) cast to ctype functions

Homogenize usage messages: make the 'usage' word all lowercase, as this seems
to be the most common practice in our tree.

fix strncat too. from wiz

strlcpy

strlcat

Make this comple with modified mrouted sources.

Move back here from gnu/dist/map-mbone now the mrouted license is cleared.

move mbone tools out of basesrc, as they use part of mrouted

null commit

poll.h, not sys/poll.h

select() -> poll()

die if fd_set overrun. (they're not setuid binary so it is not that critical)

Unifdef __STDC__. ANSIfy. Remove __P().

missing memset() for sockaddr. from deraadt

branches: 1.8.2;
va_{start,end} audit:
Make sure that each va_start has one and only one matching va_end,
especially in error cases.
If the va_list is used multiple times, do multiple va_starts/va_ends.
If a function gets va_list as argument, don't let it use va_end (since
it's the callers responsibility).

Improved by comments from enami and christos -- thanks!

Heimdal/krb4/KAME changes already fed back, rest to follow.

Inspired by, but not not based on, OpenBSD.

updated copyright notice from Xerox. via openbsd

Negative exit code cleanup: Replace exit(-x) with exit(x).
As seen on tech-userlevel.

More format string cleanups by sommerfeld.

branches: 1.4.2; 1.4.10;
Use strerror(3) instead of sys_errlist and sys_nerr.

Update to mrouted 3.8.

New-style RCS ids.

Update to multicast 3.5.