We cannot just assume that any name which ends with a letter is a group
That's not been true since we allowed renaming of network interfaces. It's also
not true for things like epair0a.
Try to retrieve the group members for the name to check, since we'll get ENOENT
if the group doesn't exist.
MFC after: 1 week
Event: Aberdeen hackathon 2019
During inspection of a packet trace, I noticed that an NFSv4.0 mount
reported that it supported attributes that are only defined for NFSv4.1.
In practice, this bug appears to be benign, since NFSv4.0 clients will
not use attributes that were added for NFSv4.1.
However, this was not correct and this patch fixes the NFSv4.0 server
so that it only supports attributes defined for NFSv4.0.
It also adds a definition for NFSv4.1 attributes that can only be set,
although it is only defined as 0 for now.
This is anticipation of the addition of support for the NFSv4.1 mode+mask
attribute soon.
MFC after: 2 weeks
If the OPAL flash driver supports writing without erase, it adds a
'no-erase' property to the flash device node. Honor that property and don't
bother erasing if it exists.
The inp lock is not needed for testing the V6 flag as that flag is set
once when the inp is created and never changes. For non-TCP socket
options the lock is immediately dropped after checking that flag.
This just pushes the lock down to only be acquired for TCP socket
options.
This isn't a hot-path, more a cosmetic cleanup I noticed while reading
the code.
Reviewed by: bz
MFC after: 1 month
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D19740
As discussed in that commit message, it is a dangerous default. But the
safe default causes enough pain on a variety of platforms that for now,
restore the prior default.
Some of this is self-induced pain we should/could do better about; for
example, programmatic CI systems and VM managers should introduce entropy
from the host for individual VM instances. This is considered a future work
item.
On modern x86 and Power9 systems, this may be wholly unnecessary after
D19928 lands (even in the non-ideal case where early /boot/entropy is
unavailable), because they have fast hardware random sources available early
in boot. But D19928 is not yet landed and we have a host of architectures
which do not provide fast random sources.
This change adds several tunables and diagnostic sysctls, documented
thoroughly in UPDATING and sys/dev/random/random_infra.c.
PR: 230875 (reopens)
Reported by: adrian, jhb, imp, and probably others
Reviewed by: delphij, imp (earlier version), markm (earlier version)
Discussed with: adrian
Approved by: secteam(delphij)
Relnotes: yeah
Security: related
Differential Revision: https://reviews.freebsd.org/D19944
compat mode or not. This is useful when implementing compatibility ioctl(2)
handlers in userspace.
MFC after: 1 week
Sponsored by: Mellanox Technologies
compat shims for building bootstrap tools that use new features
on systems too old to have those new features. The world view
for this part of the build is unique to the whole build process
and continuty of design for new compat shims help this library
remain viable.
On some machines, DMAR contexts must be created before all devices
under the scope of the corresponding DMAR unit are enumerated.
Current code has two problems with that:
- scope lookup returns NULL device_t, which causes to skip creating a
context with RMRR, which is fatal for the affected device.
- calculation of the final pci dbsf address fails if any bridge in the
scope is not yet enumerated, because code relies on pcib_get_bus().
Make creation of contexts work either with device_t, or with DMAR PCI
scope paths. Scope provides enough information to infer context
address, and it is directly matched against DMAR tables scopes.
When calculating bus addresses for the scope or device, use direct
pci_cfgregread(PCIR_SECBUS_1) to get the secondary bus number, instead
of pcib_get_bus().
The issue was observed on HP Gen servers, where iLO PCI devices are
located behind south bridge switch. Turning on translation without
satisfying RMRR requests caused iLO to mostly hang, up to the level of
being unusable to control the server.
While there, remove hw.dmar.dmar_match_verbose tunable, and make the
normal logging under bootverbose useful and sufficient to diagnose
DRHD and RMRR parsing and matching.
Sponsored by: Mellanox Technologies
MFC after: 1 week
Now that we don't hold a lock during DIOCRSETTFLAGS memory allocation we can
use M_WAITOK.
MFC after: 1 week
Event: Aberdeen hackathon 2019
Pointed out by: glebius@
FreeBSD does not set the pid field in the pfloghdr struct. This field is
populated on other platforms, document this to save people from trying
to use this field.
Event: Aberdeen hackathon 2019
Reviewed by: kp, bcr, bz
Approved by: bz (mentor)
Differential Revision: https://reviews.freebsd.org/D19952
The test should fail if pf rules can't be set. This is helpful both
while writing tests and to verify that pfctl works as expected.
MFC after: 1 week
Event: Aberdeen hackathon 2019
Due to three conditions the codec driver for Allwinner A10/A20 and H3/H5 did not work properly here:
Wrong bit position for the analog audio reset
Hardware Reset of codec was not de-asserted correctly
Linux DTS file did not contain the address of the analog register the way as the driver was expecting it.
This patch proposes fixes for those three parts.
Submitted by: freebsdnewbie@freenet.de (Manuel Stühn)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D19910
See r346250 and followup commits and mailing list discussion.
We currently fail to boot properly in the absense of boot-time entropy.
Sponsored by: The FreeBSD Foundation
sha1 is used by ether_gen_addr after r346324. Perhaps in an ideal world we
could detect that the kernel's been compiled without sha1_* bits included
and silently fallback to arc4random instead because these platforms/kernel
configs are far and few between. It's fairly lightweight, though, so just
include it for now.
Give devices that need a MAC a 16-bit allocation out of the FreeBSD
Foundation OUI range. Change the name ether_fakeaddr to ether_gen_addr now
that we're dealing real MAC addresses with a real OUI rather than random
locally-administered addresses.
Reviewed by: bz, rgrimes
Differential Revision: https://reviews.freebsd.org/D19587
Use an array instead of STAILQ, and sort at the end instead of while
adding new elements.
PR: 212539
Submitted by: Bora Özarslan <borako.ozarslan@gmail.com>
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
There was an issue with copyin() on DIOCRSETTFLAGS, which would panic if
pfrio_buffer was NULL.
Test for the issue fixed in r346319.
MFC after: 1 week
Event: Aberdeen hackathon 2019
If during DIOCRSETTFLAGS pfrio_buffer is NULL copyin() will fault, which we're
not allowed to do with a lock held.
We must count the number of entries in the table and release the lock during
copyin(). Only then can we re-acquire the lock. Note that this is safe, because
pfr_set_tflags() will check if the table and entries exist.
This was discovered by a local syzcaller instance.
MFC after: 1 week
Event: Aberdeen hackathon 2019
the temporary image in $TMPDIR.
Allow the script to be run from the src/tools/boot directory by using make
-V SRCTOP to find the top of the tree, because this script is handy for
quick smoke-testing of loader changes, as well as being useful in CI testing.
Also, use a temp directory in $TMPDIR to assemble the boot image, and write
the boot log file to $TMPDIR. Arrange to have the temporary image clean
itself up, but leave the log file in $TMPDIR for post-mortem analysis of
failures when the script is run interactively.
Differential Revision: https://reviews.freebsd.org/D19876
Add fileargs_lstat function to cap_fileargs casper service to be able to
lstat files while in capability mode. It can only lstat files given in
fileargs_init.
Submitted by: Bora Özarslan <borako.ozarslan@gmail.com>
Reviewed by: oshogbo, cem (partial)
MFC after: 3 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D19548
The code previously set up interrupt handlers for all the interrupt
resources available, including for timers that are not in use. That could
lead to interrupt storms. For example, if boot firmware enabled the virtual
timer but the kernel is using the physical timer, it could get flooded with
interrupts on the virtual timer which it cannot shut off. By only setting
up an interrupt handler for the hardware that will actually be used, any
interrupts from other timer units will remain masked in the interrupt
controller.
Differential Revision: https://reviews.freebsd.org/D19871
FDT_DTS_FILE was built separately with a rule in sys/conf/files and
recreated the rules we used in dtb.mk. Now that we have other infrastructure
to build a DTB along with the kernel, fold FDT_DTS_FILE into that since it
doesn't have any special requirements.
fdt(4) never got revised to mention the DTS/DTSO make options, so do that
now.
Reviewed by: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D19736
isc_rxd_refill, isc_rxd_flush return nothing, not void *.
isc_txd_credits_update, isc_rxd_available return int, not int *.
isc_txd_credits_update has a bool as final argument, not a uint32_t.
Prior to r315217 it took four arguments; the final two were
uint32_t, bool.
Reported by: Gerald Aryeetey <aryeeteygerald_rogers.com>
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
This is useful for arm (possibly other arches too) where we want to have
a GENERIC kernel that only include files for the different SoC. Since
multiple SoCs/Board needs the same device we would need to do either :
Include the device in a generic file
Include the device in each file that really needs it
Option 1 works but if someone wants to create a specific kernel config
(which isn't uncommon for embedded system), he will need to add a lots
of nodevice to it.
Option 2 also works but produce a lots of warnings.
Reviewed by: kevans
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D19424
