Additionally, move the overflow check logic out to WOULD_OVERFLOW() for
consumers to have a common means of testing for overflowing allocations.
WOULD_OVERFLOW() should be a secondary check -- on 64-bit platforms, just
because an allocation won't overflow size_t does not mean it is a sane size
to request. Callers should be imposing reasonable allocation limits far,
far, below overflow.
Discussed with: emaste, jhb, kp
Sponsored by: Dell EMC Isilon
(I missed the Reviewed by and review link from r327783.)
Reviewed by: brooks, dim, bapt
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D13827
We currently use a set of subroutines in kern_gzio.c to perform
compression of user and kernel core dumps. In the interest of adding
support for other compression algorithms (zstd) in this role without
complicating the API consumers, add a simple compressor API which can be
used to select an algorithm.
Also change the (non-default) GZIO kernel option to not enable
compressed user cores by default. It's not clear that such a default
would be desirable with support for multiple algorithms implemented,
and it's inconsistent in that it isn't applied to kernel dumps.
Reviewed by: cem
Differential Revision: https://reviews.freebsd.org/D13632
Similar to calloc() the mallocarray() function checks for integer
overflows before allocating memory.
It does not zero memory, unless the M_ZERO flag is set.
Reviewed by: pfg, vangyzen (previous version), imp (previous version)
Obtained from: OpenBSD
Differential Revision: https://reviews.freebsd.org/D13766
The sid controller on the H3 is generally identical in location, size, and
efuse offset to the a64 and the a83t. The main difference is that the H3 has
a silicon bug that sometimes causes the rootkey (at least) to be garbled
unless first read by the prctl registers.
This device is currently not in our DTS and, as of now, is not yet present
in mainline Linux DTS.
Tested on: OrangePi One
Enable the hardclock-based watchdog previously conditional on the
SW_WATCHDOG option whenever hardware watchdogs are not found, and
watchdogd attempts to enable the watchdog. The SW_WATCHDOG option
still causes the sofware watchdog to be enabled even if there is a
hardware watchdog. This does not change the other software-based
watchdog enabled by the --softtimeout option to watchdogd.
Note that the code to reprime the watchdog during kernel core dumps is
no longer conditional on SW_WATCHDOG. I think this was previously a bug.
Reviewed by: imp alfred bjk
MFC after: 1 week
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D13713
This copies changes from NetBSD into FreeBSD's man page. I compared the
proposed changes against FreeBSD headers and modified them to match.
PR: 214602
Submitted by: fehmi noyan isi <fnoyanisi@yahoo.com>
Introduce new set of loader tunables kern.vt.color.N.rgb, where N is a
number from 0 to 15. The value is either comma-separated list decimal
numbers ranging from 0 to 255 that represent values of red, green, and
blue components respectively (i.e. "128,128,128") or 6-digit hex triplet
commonly used to represent colors in HTML or xterm settings (i.e. #808080)
Each tunable overrides one of the 16 hardcoded palette codes and can be set
in loader.conf(5)
Reviewed by: bcr(docs), jilles, manu, ray
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D13645
A comment in Makefile.inc1 has long stated that LOCAL_DIRS are built last,
after the base system. Incremental improvements in parallel building over
the years have led to LOCAL_DIRS being built in parallel with base system
directories. This change allows the .WAIT directive to appear in LOCAL_DIRS
and LOCAL_LIB_DIRS lists to give the user some control over parallel
building of local additions.
Differential Revision: https://reviews.freebsd.org/D13622
filesystem larger than about 50-55 MiB.
The description of VM_KMEM_SIZE_SCALE is roughly as hand-wavy as my
understanding of the option, but at least mentioning that it's a factor
and giving an empirical datapoint that works will give folks some idea
of what to tweak if they have problems.
MD_READONLY flag for the md device automatically instantiated during
kernel init for an mdroot filesystem.
Note that there is specifically and by design no tunable or sysctl
control over this feature. Without this option, you already have control
over whether the mdroot fs is writeable using vfs.root.mountfrom.options
from loader(8), the root_rw_mount rcvar, and by using "mount -u[rw] /"
or equivelent on the fly. This option is being added to provide a way
to make the mdroot fs truly immutable before userland code begins running.
Differential Revision: https://reviews.freebsd.org/D13411
Email address has changed, uses consistent name (Matthew, not Matt)
Reported by: Matthew Macy <mmacy@mattmacy.io>
Differential Revision: https://reviews.freebsd.org/D13537
Add atomic_load_<type> and atomic_store_<type>, and explain why they
exist.
Define the synchronizes-with relationship and its effects.
Reorder and revise some of the existing text. For example, more
precisely describe when ordinary accesses are atomic.
Reviewed by: jhb, kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D13522
the expected default board_vendor value on MIPS SoCs.
This is required by bwn(4) to differentiate between single-band and
dual-band device variants that otherwise share a common chip ID.
Approved by: adrian (mentor, implicit)
Sponsored by: The FreeBSD Foundation
rc.conf(5) documents the gifconfig_<interface> keyword, which is
no longer implemented. Document the replacement, which works with
cloned_interfaces as well.
Reviewed by: dab
Group Reviwers: manpages
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D13130
This change adds an implementation of a sysent for running CloudABI
armv6 and armv7 binaries on FreeBSD/arm64. It is a somewhat literal copy
of the armv6 version, except that it's been patched up to use the proper
registers.
Just like for cloudabi32.ko on FreeBSD/amd64, we make use of a vDSO that
automatically pads system call parameters to 64-bit value. These are
stored in a buffer on the stack, meaning we need to use copyin() and
copyout() unconditionally.
type to any value. This can cause page faults and panics due to accessing
uninitialized fields in the "struct ifnet" which are specific to the network
device type.
MFC after: 1 week
Found by: jau@iki.fi
PR: 223767
Sponsored by: Mellanox Technologies
EMBEDDEDPORTS. [1]
Remove and update stale documentation from release(7) while here.
PR: 206344 [1]
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
