sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <[email protected]>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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exec.h: Move PS_STRINGS define to kernel-only section

The kern.ps_strings sysctl was introduced in r103767 and the last
use of PS_STRINGS in userspace code was removed in r297888.

PR: 208760 [exp-

exec.h: Move PS_STRINGS define to kernel-only section

The kern.ps_strings sysctl was introduced in r103767 and the last
use of PS_STRINGS in userspace code was removed in r297888.

PR: 208760 [exp-run]
Reviewed by: kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5933

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Fix core corruption caused by race in note_procstat_vmmap

This fix is spiritually similar to r287442 and was discovered thanks to
the KASSERT added in that revision.

NT_PROCSTAT_VMMAP output length

Fix core corruption caused by race in note_procstat_vmmap

This fix is spiritually similar to r287442 and was discovered thanks to
the KASSERT added in that revision.

NT_PROCSTAT_VMMAP output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' vm map
via vn_fullpath. As vnodes may move during coredump, this is racy.

We do not remove the race, only prevent it from causing coredump
corruption.

- Add a sysctl, kern.coredump_pack_vmmapinfo, to allow users to disable
kinfo packing for PROCSTAT_VMMAP notes. This avoids VMMAP corruption
and truncation, even if names change, at the cost of up to PATH_MAX
bytes per mapped object. The new sysctl is documented in core.5.

- Fix note_procstat_vmmap to self-limit in the second pass. This
addresses corruption, at the cost of sometimes producing a truncated
result.

- Fix PROCSTAT_VMMAP consumers libutil (and libprocstat, via copy-paste)
to grok the new zero padding.

Reported by: pho (https://people.freebsd.org/~pho/stress/log/datamove4-2.txt)
Relnotes: yes
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3824

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Follow-up to r287442: Move sysctl to compiled-once file

Avoid duplicate sysctl nodes.

Found by: tijl
Approved by: markj (mentor)
Sponsored by: EMC / Isilon Storage Division
Differential Revision: h

Follow-up to r287442: Move sysctl to compiled-once file

Avoid duplicate sysctl nodes.

Found by: tijl
Approved by: markj (mentor)
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3586

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Update the comments in exec.h with help from jilles.

PR: 180970
Submitted by: Carlos Jacobo Puga Medina <[email protected]>
Reviewed by: jilles
MFC after: 1 week

Add macro DECLARE_MODULE_TIED to denote a module as requiring the
kernel of exactly the same __FreeBSD_version as the headers module was
compiled against.

Mark our in-tree ABI emulators with DECLARE

Add macro DECLARE_MODULE_TIED to denote a module as requiring the
kernel of exactly the same __FreeBSD_version as the headers module was
compiled against.

Mark our in-tree ABI emulators with DECLARE_MODULE_TIED. The modules
use kernel interfaces that the Release Engineering Team feel are not
stable enough to guarantee they will not change during the life cycle
of a STABLE branch. In particular, the layout of struct sysentvec is
declared to be not part of the STABLE KBI.

Discussed with: bz, rwatson
Approved by: re (bz, kensmith)
MFC after: 2 weeks

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Make ps_nargvstr and ps_nenvstr unsigned. This fixes an input
validation error in procfs/linprocfs that can be exploited by local
users to cause a kernel panic. All versions of FreeBSD with the pat

Make ps_nargvstr and ps_nenvstr unsigned. This fixes an input
validation error in procfs/linprocfs that can be exploited by local
users to cause a kernel panic. All versions of FreeBSD with the patch
referenced in SA-04:17.procfs have this bug, but versions without that
patch have a more serious bug instead. This problem only affects
systems on which procfs or linprocfs is mounted.

Found by: Coverity Prevent analysis tool
Security: Local DOS

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Do a pass over all modules in the kernel and make them return EOPNOTSUPP
for unknown events.

A number of modules return EINVAL in this instance, and I have left
those alone for now and instead taugh

Do a pass over all modules in the kernel and make them return EOPNOTSUPP
for unknown events.

A number of modules return EINVAL in this instance, and I have left
those alone for now and instead taught MOD_QUIESCE to accept this
as "didn't do anything".

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Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core

Increase the size of SPARE_USRSPACE. It is way too small by default
for things like execve.

Use __CONCAT and __XSTRING when concatenating or stringifying arguments to
the EXEC_SET macro, so that the arguments themselves can be macros.
(Actually __STRING would suffice, instead of __XSTRING,

Use __CONCAT and __XSTRING when concatenating or stringifying arguments to
the EXEC_SET macro, so that the arguments themselves can be macros.
(Actually __STRING would suffice, instead of __XSTRING, but oh well).

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Remove __P

Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is cons

Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is consistant with the other
BSD's who made this change quite some time ago. More commits to come.

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$Id$ -> $FreeBSD$

Well folks, this is it - The second stage of the removal for build support
for LKM's..

More -Wall / -Wcast-qual cleanup. Also, EXEC_SET can't use
C_DECLARE_MODULE due to the linker_file_sysinit() function
making modifications to the data.

Have EXEC_SET use C_DECLARE_MODULE instead of DECLARE_MODULE.

Add C_DECLARE_MODULE - same as DECLARE_MODULE but uses C_SYSINIT
instead of SYSINIT.

The C_ items are going to be used for

Have EXEC_SET use C_DECLARE_MODULE instead of DECLARE_MODULE.

Add C_DECLARE_MODULE - same as DECLARE_MODULE but uses C_SYSINIT
instead of SYSINIT.

The C_ items are going to be used for items passing const data to
sysinit.

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Removed the cast to a pointer in the definition of PS_STRINGS and
adjusted related casts to match (only in the kernel in this commit).
The pointer was only wanted in one place in kern_exec.c. Applic

Removed the cast to a pointer in the definition of PS_STRINGS and
adjusted related casts to match (only in the kernel in this commit).
The pointer was only wanted in one place in kern_exec.c. Applications
should use the kern.ps_strings sysctl instead of PS_STRINGS, so they
shouldn't notice this change.

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Finished updating module event handlers to be compatible with
modeventhand_t.

*gulp*. Jordan specifically OK'ed this..

This is the bulk of the support for doing kld modules. Two linker_sets
were replaced by SYSINIT()'s. VFS's and exec handlers are self registered.
kld is n

*gulp*. Jordan specifically OK'ed this..

This is the bulk of the support for doing kld modules. Two linker_sets
were replaced by SYSINIT()'s. VFS's and exec handlers are self registered.
kld is now a superset of lkm. I have converted most of them, they will
follow as a seperate commit as samples.
This all still works as a static a.out kernel using LKM's.

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Update the ELF image activator to use some of the exec resources rather
than rolling it's own. This means that it now uses the "safe"
exec_map_first_page() to get the ld.so headers rather than riski

Update the ELF image activator to use some of the exec resources rather
than rolling it's own. This means that it now uses the "safe"
exec_map_first_page() to get the ld.so headers rather than risking a panic
on a page fault failure (eg: NFS server goes down).
Since all the ELF tools go to a lot of trouble to make sure everything
lives in the first page for executables, this is a win. I have not seen
any ELF executable on any system where all the headers didn't fit in the
first page with lots of room to spare.
I have been running variations of this code for some time on my pure ELF
systems.

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Fixed gratuitous ANSIisms.

Some staticized variables were still declared to be extern.

Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.