where an improperly initialized prison field could lead to a panic. This
is not the correct solution, since it fails to address similar problems
for both AUDIT and MAC, which also rely on properly initialized
credentials, but should reduce panic reports while we work that out.
Reported by: ps, kan, others
thread has already unregistered the structure. Also add a KASSERT()
to xprt_unregister_locked() to check that the structure hasn't already
been unregistered.
Reviewed by: jhb
Tested by: pho
Approved by: kib (mentor)
gpart(8). LBAs in particular are ugly. The ganularity is a sector,
but users expect byte granularity when specifying the size or offset
with a SI unit. Handle LBAs specially to deal with this.
For a slightly thorough explaination, please refer to
[1] http://people.freebsd.org/~ariff/SOUND_4.TXT.html .
Summary of changes includes:
1 Volume Per-Channel (vpc). Provides private / standalone volume control
unique per-stream pcm channel without touching master volume / pcm.
Applications can directly use SNDCTL_DSP_[GET|SET][PLAY|REC]VOL, or for
backwards compatibility, SOUND_MIXER_PCM through the opened dsp device
instead of /dev/mixer. Special "bypass" mode is enabled through
/dev/mixer which will automatically detect if the adjustment is made
through /dev/mixer and forward its request to this private volume
controller. Changes to this volume object will not interfere with
other channels.
Requirements:
- SNDCTL_DSP_[GET|SET][PLAY|REC]_VOL are newer ioctls (OSSv4) which
require specific application modifications (preferred).
- No modifications required for using bypass mode, so applications
like mplayer or xmms should work out of the box.
Kernel hints:
- hint.pcm.%d.vpc (0 = disable vpc).
Kernel sysctls:
- hw.snd.vpc_mixer_bypass (default: 1). Enable or disable /dev/mixer
bypass mode.
- hw.snd.vpc_autoreset (default: 1). By default, closing/opening
/dev/dsp will reset the volume back to 0 db gain/attenuation.
Setting this to 0 will preserve its settings across device
closing/opening.
- hw.snd.vpc_reset (default: 0). Panic/reset button to reset all
volume settings back to 0 db.
- hw.snd.vpc_0db (default: 45). 0 db relative to linear mixer value.
2 High quality fixed-point Bandlimited SINC sampling rate converter,
based on Julius O'Smith's Digital Audio Resampling -
http://ccrma.stanford.edu/~jos/resample/. It includes a filter design
script written in awk (the clumsiest joke I've ever written)
- 100% 32bit fixed-point, 64bit accumulator.
- Possibly among the fastest (if not fastest) of its kind.
- Resampling quality is tunable, either runtime or during kernel
compilation (FEEDER_RATE_PRESETS).
- Quality can be further customized during kernel compilation by
defining FEEDER_RATE_PRESETS in /etc/make.conf.
Kernel sysctls:
- hw.snd.feeder_rate_quality.
0 - Zero-order Hold (ZOH). Fastest, bad quality.
1 - Linear Interpolation (LINEAR). Slightly slower than ZOH,
better quality but still does not eliminate aliasing.
2 - (and above) - Sinc Interpolation(SINC). Best quality. SINC
quality always start from 2 and above.
Rough quality comparisons:
- http://people.freebsd.org/~ariff/z_comparison/
3 Bit-perfect mode. Bypasses all feeder/dsp effects. Pure sound will be
directly fed into the hardware.
4 Parametric (compile time) Software Equalizer (Bass/Treble mixer). Can
be customized by defining FEEDER_EQ_PRESETS in /etc/make.conf.
5 Transparent/Adaptive Virtual Channel. Now you don't have to disable
vchans in order to make digital format pass through. It also makes
vchans more dynamic by choosing a better format/rate among all the
concurrent streams, which means that dev.pcm.X.play.vchanformat/rate
becomes sort of optional.
6 Exclusive Stream, with special open() mode O_EXCL. This will "mute"
other concurrent vchan streams and only allow a single channel with
O_EXCL set to keep producing sound.
Other Changes:
* most feeder_* stuffs are compilable in userland. Let's not
speculate whether we should go all out for it (save that for
FreeBSD 16.0-RELEASE).
* kobj signature fixups, thanks to Andriy Gapon <avg@freebsd.org>
* pull out channel mixing logic out of vchan.c and create its own
feeder_mixer for world justice.
* various refactoring here and there, for good or bad.
* activation of few more OSSv4 ioctls() (see [1] above).
* opt_snd.h for possible compile time configuration:
(mostly for debugging purposes, don't try these at home)
SND_DEBUG
SND_DIAGNOSTIC
SND_FEEDER_MULTIFORMAT
SND_FEEDER_FULL_MULTIFORMAT
SND_FEEDER_RATE_HP
SND_PCM_64
SND_OLDSTEREO
Manual page updates are on the way.
Tested by: joel, Olivier SMEDTS <olivier at gid0 d org>, too many
unsung / unnamed heroes.
The exit status may exceed 255 in some cases (return); even though it seems
unwise to rely on this, it is also unwise to assume that $? is always
between 0 and 255.
This resolves bin/124748 by documenting that 'exit -1' is not valid.
PR: bin/124748
Approved by: ed (mentor)
This NTP configuration file points to the [012].pool.ntp.org servers,
which will return a list of geographical local NTP servers.
It uses the best-practice options of "iburst" and "maxpoll 9".
It gives examples on how to use the "restrict" commands, which are
unfortunately not working when you use the pool.ntp.org servers.
It sets up a fudge server so any clients syncing against this server
will always be synced even if we lose the master.
The idea of this file was briefly discussed on -net.
PR: conf/58595
Submitted by: Chris Stenton <jacs@gnome.co.uk>
MFC after: 1 week
Base 10 is always used for the inode counts as I could not think of any
reason base 2 inode counts would be useful.
Minor mdoc markup fix to df(1) while here anyway.
MFC after: 3 weeks
middle of senetences. This also makes the code more consistent
with the corresponding FFS code.
- Use 2-space sentences breaks consistently.
Suggested by: bde
the number of days between backups. All it says is frequency, with no
units given. It likely should say "the interval in days between backups"
instead, but not today.
mtx_destroy() of the pool mutex to after SVC_RELEASE(), because
the pool mutex was still locked when soclose() was called by svc_dg_destroy().
To fix this, an mtx_unlock() was added where mtx_destroy() was before
r193436.
Reviewed by: jhb
Tested by: pho
Approved by: rwatson (mentor)
The problem with fcntl(2) locks is that they are not inherited by child
processes. This breaks pidfile(3), where the common idiom is to open
and lock the PID file before daemonizing.
I found out that the input format of the Boemler list was different
than what the code expected: The last two fields were interpreted
as one. Checking the csv version of the list it showed that there
was sometimes a chipset number in the column before the card
description.
This is a rewrite to use the CSV format of the Boemler list. The
output is differently formatted: Instead of the "chip description",
it is now "description (chip)"
in Freescale system-on-chip devices.
The following algorithms and schemes are currently supported:
- 3DES, AES, DES
- MD5, SHA1, SHA256, SHA384, SHA512
Reviewed by: philip
Obtained from: Freescale, Semihalf
behavior for unicode support in UDF so as not to conflict with the MAC
Framework.
Note that Apple's XNU kernel also uses #ifdef MAC for the MAC Framework.
Suggested by: pjd
MFC after: 3 days
adjust conf/files and modules' Makefiles accordingly.
No code or ABI changes so this and most of previous related
changes can be easily MFC'ed
MFC after: 5 days
could be handled w/o fragmentation but clobbers user-specified values
such as those required when the interface is bridged.
Submitted by: jim@netgate.com
Reviewed by: Jouni Malinen
MFC after: 3 days
