Commit Graph

9 Commits

Author SHA1 Message Date
Pedro F. Giffuni
718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00
Konstantin Belousov
9837947b07 Provide counter_warning(9) KPI which allows to issue limited number of
warnings for some kernel events, mostly intended for the use of
obsoleted or otherwise undersired interfaces.

This is an abstracted and race-expelled code from compat pty driver.

Requested and reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D7270
2016-07-21 16:34:56 +00:00
Conrad Meyer
b51230b720 pty(4): Use strlcpy to guarantee destination buffer isn't overrun
The devtoname() name is strcpyed into a small stack buffer.  Sure, we always
expect the name to be ttyXX (or ptyXX).  If that's the case, strlcpy() doesn't
hurt.

Reported by:	Coverity
CID:		1006768
Sponsored by:	EMC / Isilon Storage Division
2016-04-20 04:50:33 +00:00
Konstantin Belousov
be62a642f2 Remove printf only useful for debugging.
Requested by:	bde
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
2016-01-22 20:28:24 +00:00
Konstantin Belousov
7ea3f72efb Switch legacy pty clone handler to use make_dev_s(9). Add
MAKEDEV_CHECKNAME flag to the call, this is required to not panic on
race between the clone and destructing the closed master.

Reported by and discussed with:	bde
Tested by:	pho (as part of the larger patch)
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
2016-01-13 12:01:28 +00:00
Ed Schouten
7c9669276e Fix whitespace inconsistencies in the TTY layer and its drivers owned by me. 2011-06-26 18:26:20 +00:00
Konstantin Belousov
23b70c1ae2 Finish r210923, 210926. Mark some devices as eternal.
MFC after:	2 weeks
2011-01-04 10:59:38 +00:00
Ed Schouten
4d3b1aacfc Move ptmx into pty(4).
Now that pty(4) is a loadable kernel module, I'd better move /dev/ptmx
in there as well. This means that pty(4) now provides almost all
pseudo-terminal compatibility code. This means it's very easy to test
whether applications use the proper library interfaces when allocating
pseudo-terminals (namely posix_openpt and openpty).
2009-09-06 10:27:45 +00:00
Ed Schouten
bfdaa52382 Allow pty(4) to be loaded as a kld.
Unfortunately, the wrappers that are present in pts(4) don't have the
mechanics to allow pty(4) to be unloaded safely, so I'm forcing this kld
to return EBUSY. This also means we have to enable some extra code in
pts(4) unconditionally.

Proposed by:	rwatson
2009-08-23 20:26:09 +00:00