sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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sys: Remove $FreeBSD$: one-line .h pattern

Remove /^\s*\*+\s*\$FreeBSD\$.*$\n/

Retire procfs-based process debugging.

Modern debuggers and process tracers use ptrace() rather than procfs
for debugging. ptrace() has a supserset of functionality available
via procfs and new deb

Retire procfs-based process debugging.

Modern debuggers and process tracers use ptrace() rather than procfs
for debugging. ptrace() has a supserset of functionality available
via procfs and new debugging features are only added to ptrace().
While the two debugging services share some fields in struct proc,
they each use dedicated fields and separate code. This results in
extra complexity to support a feature that hasn't been enabled in the
default install for several years.

PR: 244939 (exp-run)
Reviewed by: kib, mjg (earlier version)
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D23837

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[procfs] Split procfs_attr into multiple functions

Reviewed by: des, kib
Discussed with: mmacy
Differential Revision: https://reviews.freebsd.org/D15150

Merge ^/head r325999 through r326131.

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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remove procfs ctl interface

This interface has no in-tree consumers and has been more or less
non-functional for several releases.

Remove manpage note that the procfs special file 'mem' is grouped

remove procfs ctl interface

This interface has no in-tree consumers and has been more or less
non-functional for several releases.

Remove manpage note that the procfs special file 'mem' is grouped to
kmem. This hasn't been true since r81107.

Remove procfs' README file. It is an out of date duplication of the manpage
(quoth the README: "since the bsd kernel is single-processor...").

Reviewed by: vangyzen, bcr (manpage)
Approved by: des (procfs maintainer), vangyzen (mentor)
Differential Revision: https://reviews.freebsd.org/D9802

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Merge ^/head r314420 through r314481.

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 <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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MFC r197428:
Add per-process osrel node to the procfs, to allow read and set p_osrel
value for the process.

- MFC

Sync with head

Add per-process osrel node to the procfs, to allow read and set p_osrel
value for the process.

Approved by: des (procfs maintainer)
MFC after: 3 weeks

/* -> /*- for copyright notices, minor format tweaks as necessary

Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson

Slightly change the semantics of vnode labels for MAC: rather than
"refreshing" the label on the vnode before use, just get the label
right from inception. For single-label file systems, set the lab

Slightly change the semantics of vnode labels for MAC: rather than
"refreshing" the label on the vnode before use, just get the label
right from inception. For single-label file systems, set the label
in the generic VFS getnewvnode() code; for multi-label file systems,
leave the labeling up to the file system. With UFS1/2, this means
reading the extended attribute during vfs_vget() as the inode is
pulled off disk, rather than hitting the extended attributes
frequently during operations later, improving performance. This
also corrects sematics for shared vnode locks, which were not
previously present in the system. This chances the cache
coherrency properties WRT out-of-band access to label data, but in
an acceptable form. With UFS1, there is a small race condition
during automatic extended attribute start -- this is not present
with UFS2, and occurs because EAs aren't available at vnode
inception. We'll introduce a work around for this shortly.

Approved by: re
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories

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Introduce support for Mandatory Access Control and extensible
kernel access control.

Modify procfs so that (when mounted multilabel) it exports process MAC
labels as the vnode labels of procfs vnode

Introduce support for Mandatory Access Control and extensible
kernel access control.

Modify procfs so that (when mounted multilabel) it exports process MAC
labels as the vnode labels of procfs vnodes associated with processes.

Approved by: des
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs

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Spelling fix for comment.

Remove an obsolete prototype for procfs_kmemaccess().

Submitted by: rwatson

Fix a KSEfication brain-o in procfs_doprocfile(): return the path of the target process,
not the calling process. While we're here, also unstaticize procfs_doprocfile() and
procfs_docurproc() so lin

Fix a KSEfication brain-o in procfs_doprocfile(): return the path of the target process,
not the calling process. While we're here, also unstaticize procfs_doprocfile() and
procfs_docurproc() so linprocfs can call them directly instead of duplicating them.

Submitted by: Dominic Mitchell <dom@semantico.com>

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Pseudofsize procfs(5).

Dissociate ptrace from procfs.

Until now, the ptrace syscall was implemented as a wrapper that called
various functions in procfs depending on which ptrace operation was
requested. Most of these fu

Dissociate ptrace from procfs.

Until now, the ptrace syscall was implemented as a wrapper that called
various functions in procfs depending on which ptrace operation was
requested. Most of these functions were themselves wrappers around
procfs_{read,write}_{,db,fp}regs(), with only some extra error checks,
which weren't necessary in the ptrace case anyway.

This commit moves procfs_rwmem() from procfs_mem.c into sys_process.c
(renaming it to proc_rwmem() in the process), and implements ptrace()
directly in terms of procfs_{read,write}_{,db,fp}regs() instead of
having it fake up a struct uio and then call procfs_do{,db,fp}regs().

It also moves the prototypes for procfs_{read,write}_{,db,fp}regs()
and proc_rwmem() from proc.h to ptrace.h, and marks all procfs files
except procfs_machdep.c as "optional procfs" instead of "standard".

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KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is fu

KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after: ha ha ha ha

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Remove dangling prototype for the now defunct procfs_kmemaccess()
call.

Obtained from: TrustedBSD Project

Prior to support for almost all ps activity via sysctl, ps used procfs,
and so special-casing was introduced to provide extra procfs privilege
to the kmem group. With the advent of non-setgid kmem p

Prior to support for almost all ps activity via sysctl, ps used procfs,
and so special-casing was introduced to provide extra procfs privilege
to the kmem group. With the advent of non-setgid kmem ps, this code
is no longer required, and in fact, can is potentially harmful as it
allocates privilege to a gid that is increasingly less meaningful.
Knowledge of specific gid's in kernel is also generally bad precedent,
as the kernel security policy doesn't distinguish gid's specifically,
only uid 0.

This commit removes reference to kmem in procfs, both in terms of
access control decisions, and the applying of gid kmem to the
/proc/*/mem file, simplifying the associated code considerably.
Processes are still permitted to access the mem file based on
the debugging policy, so ps -e still works fine for normal
processes and use.

Reviewed by: tmm
Obtained from: TrustedBSD Project

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