made writeable by the root user. Userspace audio daemons can add or
update an entry in /dev/sndstat by doing a single system write call to
any /dev/sndstat file descriptor handle. When the audio daemon closes the
file handle or is killed the entry disappears.
While at it, cleanup the sound status code a bit:
- keep the device list sorted to avoid sorting the list every time a
/dev/sndstat read request is made.
- factor out locking into a pair of locking macros.
- use the sound status lock to protect all per file handle states,
when generating the output for /dev/sndstat and when removing or
adding sound status devices. This way sndstat_acquire() and
sndstat_release() become superfluous and can be removed.
Reviewed by: mav @
Differential Revision: https://reviews.freebsd.org/D5191
copyin and copyout code handle virtual addresses such that they will take
a virtual address and convert it into a valid physical address. It may
also mean we fail to boot as the elf files load address could be 0.
Sponsored by: ABT Systems Ltd
Prevent the function from null-pointer-dereference when unexisting
mapping is being processed.
Obtained from: Semihalf
Sponsored by: Cavium
Approved by: cognet (mentor)
Reviewed by: zbb, cognet
Differential revision: https://reviews.freebsd.org/D5228
Currently, there is no easy way to know in advance how many entries a list parsed by
ofw_bus_parse_xref_list_alloc() in sys/dev/ofw/ofw_bus_subr.c has.
This patch:
* teaches the existing function about handling idx == -1 and returning how big
the set is; then renames it as _internal;
* create a new function that asserts idx != -1, so the old API is maintained;
* add a new function that returns just the list length.
Submitted by: Stanislav Galabov <sgalabov@gmail.com>
Differential Revision: https://reviews.freebsd.org/D5043
so will access data from an unrelocated address. This is only needed for
self relocating code on ARMv7, however this is true for both ubldr and
loader.efi, the only two loaders we support on ARMv7.
While here also force the fpu to be none as is done in libstand.
Sponsored by: ABT Systems Ltd
stores to clear it.
While here reduce the alignment of the data from 4k to 16 byte aligned.
This should be more than enough, without wasting too much space.
Sponsored by: ABT Systems Ltd
Kernel threads (and processes) are supposed to call kthread_exit() (or
kproc_exit()) to terminate. However, the kernel includes a fallback in
fork_exit() to force a kthread exit if a kernel thread's "main" routine
returns. This fallback was added back when the kernel only had processes
and was not updated to call kthread_exit() instead of kproc_exit() when
threads were added to the kernel.
This mistake was particular exciting when the errant thread belonged to
proc0. Due to the missing P_KTHREAD flag the fallback did not kick in
and instead tried to return to userland via whatever garbage was in the
trapframe. With P_KTHREAD set it tried to terminate proc0 resulting in
other amusements.
PR: 204999
MFC after: 1 week
All other kernel processes have this flag set and all threads in proc0
(including thread0) have the similar TDP_KTHREAD flag set.
PR: 204999
Submitted by: Oliver Pinter @ HardenedBSD
Reviewed by: kib
MFC after: 1 week
and a retry is scheduled.
Instead of leaving the device queue frozen, unfreeze the device queue so
that the retry can happen.
Sponsored by: Spectra Logic
MFC after: 3 days
This allows skipping 'make depend' or running 'make clean all' without
getting a flip-flopping dependency due to the exists() just below.
Otherwise an error is encountered, such as:
fatal error: 'machine/endian.h' file not found.
Sponsored by: EMC / Isilon Storage Division
While the later is a better random generator than the former, the main
reason of the change is that random() has a better chance to work with
libstand(3).
At this time we don't include random number generators in bootforth
so this has no effect.
in boot1, like is normally done. When a keyboard appears in the UEFI
device tree, assume -D -h, just like on a BIOS boot.
# It is unclear if an ACPI keyboard appearing in the tree means there's
# a real keyboard or not. A USB keyboard doesn't seem to appear unless
# it is really there.
Differential Revision: https://reviews.freebsd.org/D5223
I previously disconnected kgzdr based on a misunderstanding.
I'd still like to transition to supporting only the loader(8)-based
boot path for handling compressed kernels, but that can follow the
standard deprecation procedure.
This reverts r291113.
Requested by: dteske
disable compilation of the code which made it possible to call
stop_all_proc() from usermode at all.
Move the comment to the preamble of stop_all_proc() and reword it to
give overview of the function intent.
proc0 has P_HADTHREADS flag set due to kthread_add(), but no
P_KTHREAD, which triggered the assert, which does not serve a purpose
now.
Reported by: Oliver Pinter
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Although POSIX literally permits failing with [EINVAL] if IPC_CREAT and
IPC_EXCL were both passed, the semaphore set already exists and has fewer
semaphores than nsems, this does not allow an application to retry safely:
if the [EINVAL] is actually because of the semmsl limit, an infinite loop
would result.
PR: 206927
CID 1018688 is a false positive.
The initialization is done by calling vn_start_write(... &mp, flags).
mp is only an output parameter unless (flags & V_MNTREF), and fdesc
doesn't put V_MNTREF in flags.
Pointed out by: bde
This causes boot from external media (installer USB image) to mount / from
the default ZFS BE, rather than the USB device.
Reported by: kmoore
MFC after: 5 days
Sponsored by: ScaleEngine Inc.
With warnings now enabled some plaforms where failing due to warnings.
* Fix st_size printed as a size_t when its actually an off_t.
* Fix pointer conversion in load_elf for some 32bit platforms due to 64bit
off in ef.
MFC after: 2 days
X-MFC-With:
Sponsored by: Multiplay
when its result is immediately ignored, i.e. for kernel processes
forked from the user process. Do not test for non-null before freeing
string.
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Typically <foo>list is used for a structure that holds a list head in
FreeBSD, not for members of a list. As such, rename 'struct aiocblist'
to 'struct kaiocb' (the kernel version of 'struct aiocb').
While here, use more consistent variable names for AIO control blocks:
- Use 'job' instead of 'aiocbe', 'cb', 'cbe', or 'iocb' for kernel job
objects.
- Use 'jobn' instead of 'cbn' for use with TAILQ_FOREACH_SAFE().
- Use 'sjob' and 'sjobn' instead of 'scb' and 'scbn' for fsync jobs.
- Use 'ujob' instead of 'aiocbp', 'job', 'uaiocb', or 'uuaiocb' to hold
a user pointer to a 'struct aiocb'.
- Use 'ujobp' instead of 'aiocbp' for a user pointer to a 'struct aiocb *'.
Reviewed by: kib
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D5125
Major changes:
- Add i219/i219(2) hardware support. (Found on Skylake generation and newer
chipsets.)
- Further to the last Skylake support diff, this one also includes support for
the Lewisburg chipset (i219(3)).
- Add a workaround to an igb hardware errata.
All 1G server products need to have IPv6 extension header parsing turned off.
This should be listed in the specification updates for current 1G server
products, e.g. for i350 it's errata #37 in this document:
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/ethernet-controller-i350-spec-update.pdf
- Avoton (i354) PHY errata workaround added
And a bunch of minor fixes, as well as #defines for things that the current
em(4)/igb(4) drivers don't implement.
Differential Revision: https://reviews.freebsd.org/D3162
Reviewed by: sbruno, marius, gnn
Approved by: gnn
MFC after: 2 weeks
Sponsored by: Intel Corporation
Fix EFI boot support when presented with multiple valid boot partitions
across multiple devices.
It now prefers to boot from partitions that are present on the underlying
device that the boot1 image was loaded from. This means that it will boot
from the partitions on device the user chose from EFI boot menu in
preference to those on other devices.
Also fixed is the recovery from a failed attempt to boot, from a seemingly
valid partition, by continuing to trying all other available partitions
no matter what the error.
boot1 now use * to signify a partition what was accepted from the preferred
device and + otherwise.
Finally some error messages where improved and DPRINTF's with slowed boot
to aid debugging.
ZFS will still be preferred over UFS when both are available on the boot
device.
Reviewed by: imp
MFC after: 1 week
Sponsored by: Multiplay
Differential Revision: https://reviews.freebsd.org/D5108
We will eventually convert them to use busdma.
Submitted by: Jun Su <junsu microsoft com>
Reviewed by: adrian, sephe, Dexuan Cui <decui microsoft com>
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5087
And convert rndis non-hot path spinlock to mutex.
Submitted by: Jun Su <junsu microsoft com>
Reviewed by: adrian, sephe
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5081
HyperV code was ported from Linux. There is an implementation of
work queue called hv_work_queue. In FreeBSD, taskqueue could be
used for the same purpose. Convert all the consumer of hv_work_queue
to use taskqueue, and remove work queue implementation.
Submitted by: Jun Su <junsu microsoft com>
Reviewed by: adrian, Hongjiang Zhang <honzhan microsoft com>
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D4963
It is off by default. This eases more experiment on hn(4).
Reviewed by: adrian, Hongjiang Zhang <honzhan microsoft com>
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5175
This significantly increases LRO aggregation ratio when there are
large amount of connections (improves reception performance a lot).
Reviewed by: adrian
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5167
hn(4) only has one RX ring currently, so default 8 LRO entries
are too small.
Reviewed by: adrian
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5166
We lost half of the chimney sending space, because we mis-used
ffs() on a 64 bits mask, where ffsl() should be used.
While I'm here:
- Use system atomic operation instead.
- Stringent chimney sending index assertion.
Reviewed by: adrian
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5159
