Pull the responsibility for zeroing events, which is general to any
conceivable implementation of a random device algorithm, out of the
algorithm-specific Fortuna code and into the callers. Most callers
indirect through random_fortuna_process_event(), so add the logic there.
Most callers already explicitly bzeroed the events they provided, so the
logic in Fortuna was mostly redundant.
Add one missing bzero in randomdev_accumulate(). Also, remove a redundant
bzero in the same function -- randomdev_hash_finish() is obliged to bzero
the hash state.
Reviewed by: delphij
Approved by: secteam(delphij)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20318
Add Chacha20 mode to Encrypted Kernel Crash Dumps.
Chacha20 does not require messages to be multiples of block size, so it is
valid to use the cipher on non-block-sized messages without the explicit
padding AES-CBC would require. Therefore, allow use with simultaneous dump
compression. (Continue to disallow use of AES-CBC EKCD with compression.)
dumpon(8) gains a -C cipher flag to select between chacha and aes-cbc.
It defaults to chacha if no -C option is provided. The man page documents this
behavior.
Relnotes: sure
Sponsored by: Dell EMC Isilon
This takes the SPCR code currently in uart_cpu_arm64.c, moves it into
a new uart_cpu_acpi.c (with some associated refactoring), and uses it
from both arm64 and x86.
An SPCR serial port address AccessWidth field value of 0 ("reserved")
is now treated as 1 ("byte access") in order to work around a buggy
SPCR table on Amazon EC2 i3.metal instances.
Reviewed by: manu, Greg V
MFC after: 3 days
Sponsored by: https://www.patreon.com/cperciva
Differential Revision: https://reviews.freebsd.org/D20357
This adds some new commands to loader :
- pnpmatch
This takes a pnpinfo string as argument and tries to find a kernel module
associated with it. -v and -d option are available and are the same as in
devmatch (v is verbose, d dumps the hints).
- pnpload
This takes a pnpinfo string as argument and tries to load a kernel module
associated with it.
- pnpautoload
This will attempt to load every kernel module for each buses. Each buses are
probed, the probe function will generate pnpinfo string and load kernel module
associated with it if it exists.
Only simplebus for FDT system is implemented for now.
Since we need the dtb and overlays to be applied before searching the tree
fdt_devmatch_next will load and apply the dtb + overlays.
All the pnp parsing code comes from devmatch and is the same at 99%.
Reviewed by: imp, kevans
Differential Revision: https://reviews.freebsd.org/D19498
Use the .PATH mechanism instead so keep installing them from lib/libc/gen
While here revert 347961 and 347893 which are no longer needed
Discussed with: manu
Tested by: manu
ok manu@
Some clocks used the NM type but this clock is for the ones with the
formula "clk = clkin / n / m" and not "clk = clkin * n / m"
Use the new frac clock for them.
Add a clock driver for clock that can either be used in integer mode
with one N factor and one M divider or in fractional mode where the
output frequency is chosen between two predifined output.
newvers.sh has supported a variable setting only mode, use that in
preference to grep to future proof this script from changes there.
Differential Revision: https://reviews.freebsd.org/D19849
Rather than the tedious and error-prone grep of sys/conf/newvers.sh,
use the new -v arg to dig out the data that's desired.
Differential Revision: https://reviews.freebsd.org/D19849
Add -v to print TYPE REVISION BRANCH RELEASE VERSION RELDATE variables
Add -V var to print var's value
Both of these in ${var}="${val}" format suitable for
eval $(sh newvers.sh -v)
in shell scripts / makefiles.
Add -c to print the copyright / license comment text only.
Document these, and remove soon-to-be obsolete comment.
Minor code motion as well bunded here to put functions after
VARS_ONLY and command line argument parsing.
Differential Revision: https://reviews.freebsd.org/D19849
Due to how the linker.hints file is laid out, we'll associate the pnp
info with the wrong module if the module declaration comes after the
pnp info. Until that limiation is removed, we need to have this
ordering. Ideally, we'd also enforce the ordering somehow, but I've
come up with no way to do that yet...
Pnpinfo is bus-specific and requires the bus name. The FDTCOMPAT_PNP_INFO()
macro makes it easier to define new FDT-based pnpinfo for busses other than
simplebus.
Differential Revision: https://reviews.freebsd.org/D20382
See usage for the command line structure. Man page will come shortly.
Reviewed by: jilles, tmunro
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D20258
Many i2c slave drivers are in modules that can be unloaded. If they detach
while IO is in progress the bus would be hung forever. Conversely,
lower-layer drivers (iicbus and the hardware driver) also live in modules
and other kinds of bad things happen if they get detached while IO is in
progress. Because device_busy() propagates up to parents, marking the slave
device busy while it owns the bus solves both kinds of problems that come
with detaching i2c devices while IO is in progress.
It should be safer to flush controller and disk caches on the shutdown.
And to gracefully shut down the controller as well.
It seems that the Linux driver has been doing that for a long time.
Discussed with: scottl
Reviewed by: imp, Sumit Saxena <sumit.saxena@broadcom.com>
(both earlier version)
MFC after: 3 weeks
Sponsored by: Panzura
Differential Revision: https://reviews.freebsd.org/D19817
The sysctl provides the listing on named linked posix shared memory
segments existing in the system.
Reuse shm_fill_kinfo() for filling individual struct kinfo_file.
Remove unneeded lock around reading of shmfd->shm_mode.
Reviewed by: jilles, tmunro
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D20258
Unless there are transient references to the object, the ref count is
equal to the number of the shared memory segment mappings plus one.
Reviewed by: jilles, tmunro
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D20258
hint.gpioled.%d.state determines the initial state of the LED when the
driver takes control over it:
0 - the LED is off
1 - the LED is on
-1 - the LED is kept as it was
While here, add a module version declaration.
MFC after: 2 weks
This is a curious small widget for which I might write a driver.
It is bridge between USB HID interface and I2C interface plus some
GPIO pins.
MFC after: 2 weeks
DBCR0, according to the Freescale EREF, is guaranteed to be updated, and
changes take effect, after an isync plus change of MSR[DE] from 0 to 1.
Otherwise it's guaranteed to be updated "eventually". Use the expected
synchronization sequence to write it for resetting.
This prevents "Reset failed" from being printed immediately before the CPU
resets.
MFC after: 2 weeks
Actually set the source and destination VA's before using them. Fixes a
bizarre panic on 32-bit Book-E. Not sure why this wasn't caught by the
compiler.
The logic I originally wrote to detect whether a driftfile option was in the
set of flags was based on the result of removing the pattern *flag* being an
empty string. That didn't handle the case where the string was empty to
begin with. Doh! So now it also specifically checks for an empty string.
The result of the bad check was that ntpd would run without a driftfile, but
it would do so only if it was running as root instead of the non-priveleged
ntpd user, which isn't a typical case. Ntpd runs fine without a driftfile,
although it does take it longer to stabilize the clock frequency at startup.
Reported by: avg@
Pointy hat: ian@
MFC after: some testing
1. Change size_t to vm_size_t in some places.
2. Rename vm_map_entry_resize_free to drop the _free part.
3. Fix whitespace errors.
4. Fix screwups in patch-conflict-management that left out important
changes related to growing and shrinking objects.
Reviewed by: alc
Approved by: kib (mentor)
In commit r345845, a portion of documentation for the create subcommand was
removed. Specifically, for creating a snapshot of an existing boot
environment. bectl even has a test-case for this functionality.
Removing the sub-command description was discussed in PR 235850.
This patch brings back the second "create" description that was originally
in place. Albeit, with a few wording/clarifying changes.
Submitted by: Rob Fairbanks <rob.fx907 gmail com>
Reviewed by: kevans
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D20249
Tag saved entropy files as "nodump," to signal that the files should not be
backed up by dump(8) or other automated backup software that honors the file
flag.
Do not produce an error if the target file resides on a filesystem that does
not support file flags (e.g., msdos /boot).
Reviewed by: delphij
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20358
