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28 Commits

Author SHA1 Message Date
hselasky
30eed323c8 Disallow TUN and TAP character device IOCTLs to modify the network device 
type to any value. This can cause page faults and panics due to accessing
uninitialized fields in the "struct ifnet" which are specific to the network
device type.

MFC after:	1 week
Found by:	jau@iki.fi
PR:		223767
Sponsored by:	Mellanox Technologies
 2017-11-29 09:40:11 +00:00
brueffer
33d4745855 Remove EOL whitespace. 
Found with:	mandoc -Tlint
 2014-12-21 10:04:26 +00:00
peterj
058535ab0f Cross reference tap(4) and tun(4) and include a short explanation as 
to how they differ.  This will assist users in selecting which interface
is more appropriate for their purposes.

Approved by:	grog (co-mentor)
MFC after:	2 week
 2014-11-30 04:50:13 +00:00
bms
9fa6fbb8a2 Typo. 
(Oh well, I guess that's the danger of updating two three-letter-named
entities at the same time.)

Submitted by:	Simon L. Nielsen
MFC after:	4 weeks
 2007-02-04 16:59:50 +00:00
bms
77c2e11309 Implement ifnet cloning for tun(4)/tap(4). 
Make devfs cloning a sysctl/tunable which defaults to on.

If devfs cloning is enabled, only the super-user may create
tun(4)/tap(4)/vmnet(4) instances. Devfs cloning is still enabled by
default; it may be disabled from the loader or via sysctl with
"net.link.tap.devfs_cloning" and "net.link.tun.devfs_cloning".

Disabling its use affects potentially all tun(4)/tap(4) consumers
including OpenSSH, OpenVPN and VMware.

PR:		105228 (potentially also 90413, 105570)
Submitted by:	Landon Fuller
Tested by:	Andrej Tobola
Approved by:	core (rwatson)
MFC after:	4 weeks
 2007-02-04 16:32:46 +00:00
trhodes
57522b7a56 Patch in previous commit should have bumped doc date. 
Fix spelling of ioctl.
Note that previous commit was actually submitted by bz.  I'm not yet used
to the code boxes yet.

Noticed by:	ru
 2006-10-09 19:53:00 +00:00
trhodes
ce49ada06f The SIOCSIFNETMASK ioctl was removed from tun.c, thus remove mention of 
it in the tun.4 manual page.

PR:		98541
Submitted by:	David Gilbert
 2006-10-09 19:20:53 +00:00
ru
1541af42f1 Expand *n't contractions. 2005-02-13 22:25:33 +00:00
simon
43cdffed14 Correct the misuse of \- (mdoc(7) mathematical minus) when - (mdoc(7) 
hyphen) is meant.

Mdoc(7) clue by:	ru
Reviewed by:		ru
 2004-05-14 20:07:49 +00:00
ru
1c23ef339b mdoc(7): Use the new feature of the .In macro. 2003-09-08 19:57:22 +00:00
keramida
1eaf47abcc Delete MAKEDEV references and update the text about /dev/foo control 
devices that return the next available device when opened.

PR:		50280, 50281, 50282, 50283
Submitted by:	Sergey A.Osokin <osa@FreeBSD.org.ru>
 2003-03-25 14:49:02 +00:00
brian
29c16834ae Document that IFF_MULTICAST should be ORd with IFF_POINTOPOINT or 
IFF_BROADCAST for the TUNSIFMODE ioctl.
 2001-08-25 09:14:55 +00:00
ru
5001e16d30 mdoc(7) police: -xwidth has been fold into -width. 2001-07-13 09:09:52 +00:00
ru
35743bd62a mdoc(7) police: fixed markup and spelling. 2001-07-05 11:45:37 +00:00
brian
1d5b78c6a8 Talk a bit about how cloning works with devfs(5). 
Make it clearer about what's going on with TUNSIFHEAD and TUNSLMODE.
Tidy up a little.
 2001-06-05 14:26:17 +00:00
schweikh
c91401db41 pseudo-device -> device in kernel config lines. Removed whitespace at EOL. 
Reviewed by:	joerg, dd
 2001-05-01 09:15:30 +00:00
ru
8a6f8b5fe4 mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00
assar
d04bc13c87 document TUNSIFINFO, TUNGIFINFO, TUNSIFPID, TUNSIFHEAD, TUNGIFHEAD 2000-12-13 13:40:42 +00:00
ru
0100fd6e93 mdoc(7) police: use the new features of the Nm macro. 2000-11-20 18:41:33 +00:00
sheldonh
17d8aa3bee Add a missing "either". 
Fix a parenthetic bogon.

Reported by:	"Alexander N. Kabaev" <kabaev@mail.ru>
Obtained from:	NetBSD
 2000-03-06 07:08:14 +00:00
sheldonh
b45b9e3cde Remove single-space hard sentence breaks. These degrade the quality 
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.
 2000-03-01 14:50:24 +00:00
asmodai
5119ca02c4 Remove ``count'' argument of the pseudo-devices that do not 
use it anymore.
 2000-01-17 14:17:28 +00:00
peter
76f0c923fe $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
mph
6c732f9403 Correct a minor spacing error. 1998-05-31 04:53:30 +00:00
charnier
1ccad14adc .Sh AUTHOR -> .Sh AUTHORS according to mdoc specs. 
Use .An/.Aq.
 1998-03-12 07:31:21 +00:00
wosch
0de5e596d7 Sort cross refereces in section SEE ALSO. 1997-09-29 10:11:02 +00:00
joerg
0eab1df155 Wire tun(4) into the Makefile. 
Slightly change the way how to credit NetBSD.
 1997-09-07 12:29:55 +00:00
joerg
174eba148a Import NetBSD's tun(4) man page. 
Obtained from:	NetBSD
 1997-09-07 11:27:08 +00:00