Those which are statically defined in db_command.c.

Sponsored by:	Juniper Networks, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D35584

cgit

This is not completely exhaustive, but covers a large majority of
commands in the tree.

Reviewed by:	markj
Sponsored by:	Juniper Networks, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D35583

cgit

This flag value can be used to indicate if a command has the property of
being "memory safe". In this instance, memory safe means that the
command does not allow/enable reads or writes of arbitrary memory,
regardless of the arguments passed to it. For example, 'backtrace' is
considered a memory-safe command since its output is deterministic,
while 'show vnode' is not, since it requires a memory address as an
argument and will print the contents beginning at that location.

Apply the flag to the "show all" command macros. It is expected that
commands added to this table will always exhibit this property.

Reviewed by:	markj
Sponsored by:	Juniper Networks, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D35581

cgit

It used to be mapped at the top of the UVA.
If the randomization is enabled any address above .data section will be
randomly chosen and a guard page will be inserted in the shared page
default location.
The shared page is now mapped in exec_map_stack, instead of
exec_new_vmspace. The latter function is called before image activator
has a chance to parse ASLR related flags.
The KERN_PROC_VM_LAYOUT sysctl was extended to provide shared page
address.
The feature is enabled by default for 64 bit applications on all
architectures.
It can be toggled kern.elf64.aslr.shared_page sysctl.

Approved by:	mw(mentor)
Sponsored by:	Stormshield
Obtained from:	Semihalf
Reviewed by:	kib
Differential Revision: https://reviews.freebsd.org/D35349

cgit

Store the shared page address in struct vmspace.
Also instead of storing absolute addresses of various shared page
segments save their offsets with respect to the shared page address.
This will be more useful when the shared page address is randomized.

Approved by:	mw(mentor)
Sponsored by:	Stormshield
Obtained from:	Semihalf
Reviewed by:	kib
Differential Revision: https://reviews.freebsd.org/D35393

cgit

Use a getter macro instead of fetching the sigcode address directly
from a sysent of a given process. It assumes that the sigcode is stored
in the shared page, which is true in all cases, except for a.out
binaries. This will be later useful when the shared page address
randomization is introduced.
No functional change intended.

Approved by:	mw(mentor)
Sponsored by:	Stormshield
Obtained from:	Semihalf
Reviewed by:	kib
Differential Revision: https://reviews.freebsd.org/D35392

cgit

Out-of-tree modules which allocate an object of type OBJT_DEFAULT need
to be recompiled.  No other changes are required, however.

cgit

Some of the ofed/infiniband code has INET and INET6 address handling
code without using ifdefs.  This failed with a recent change to INET,
in which IN_LOOPBACK() started using a VNET variable, and which is not
present if INET is not configured.  Add #ifdef INET, and INET6 for good
measure, in cma_loopback_addr(), along with inclusion of the options
headers in ib_cma.c.

Reviewed by:	hselasky rgrimes bz
Differential Revision: https://reviews.freebsd.org/D35835

(cherry picked from commit 752b7632776237f9c071783acdd1136ebf5f287d)

cgit