inpcb: fully retire inp_ppcb pointer

Before a protocol specific control block started to embed inpcb in self
(see 0aa120d52f3c, e68b3792440c, 483fe96511ec) this pointer used to point
at it.

Retain

inpcb: fully retire inp_ppcb pointer

Before a protocol specific control block started to embed inpcb in self
(see 0aa120d52f3c, e68b3792440c, 483fe96511ec) this pointer used to point
at it.

Retain kf_sock_inpcb field in the struct kinfo_file in <sys/user.h>. The
exp-run detected a minimal use of the field in ports:
* sysutils/lsof - patched upstream
* net-mgmt/netdata - patch accepted upstream
* emulators/qemu-user-static - upstream master branch seems not using
the field anymore
We can keep the field around for some time, but eventually it may be
reused for something else.

PR: 277659 (exp-run)
Reviewed by: tuexen
Differential Revision: https://reviews.freebsd.org/D44491

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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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timerfd: Move implementation from linux compat to sys/kern

Move the timerfd impelemntation from linux compat code to sys/kern. Use
it to implement the new system calls for timerfd. Add a hook to ker

timerfd: Move implementation from linux compat to sys/kern

Move the timerfd impelemntation from linux compat code to sys/kern. Use
it to implement the new system calls for timerfd. Add a hook to kern_tc
to allow timerfd to know when the system time has stepped. Add kqueue
support to timerfd. Adjust a few names to be less Linux centric.

RelNotes: YES
Reviewed by: markj (on irc), imp, kib (with reservations), jhb (slack)
Differential Revision: https://reviews.freebsd.org/D38459

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

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

Add kf_file_nlink field to kf_file and populate it

This will allow user-space programs (e.g. lsof) to locate deleted files
whose nlink equals zero. Prior to this commit, programs has to use
stat(kf_

Add kf_file_nlink field to kf_file and populate it

This will allow user-space programs (e.g. lsof) to locate deleted files
whose nlink equals zero. Prior to this commit, programs has to use
stat(kf_path) to get nlink, but that will fail if the file is deleted.

[mjg: s/fail/file in the commit message]

Reviewed by: mjg
Differential Revision: https://reviews.freebsd.org/D38169

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Implement shared page address randomization

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

Implement shared page address randomization

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

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vm_pager: Remove references to KVME_TYPE_DEFAULT in the kernel

Keep the definition around since it's used by userspace.

Reviewed by: alc, imp, kib
Tested by: pho
Sponsored by: The FreeBSD Foundatio

vm_pager: Remove references to KVME_TYPE_DEFAULT in the kernel

Keep the definition around since it's used by userspace.

Reviewed by: alc, imp, kib
Tested by: pho
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35791

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struct kinfo_file changes needed for lsof to work using only usermode APIs`

Add kf_pipe_buffer_[in/out/size] fields to kf_pipe, and populate them.

Add a kf_kqueue struct to the kf_un union, to allo

struct kinfo_file changes needed for lsof to work using only usermode APIs`

Add kf_pipe_buffer_[in/out/size] fields to kf_pipe, and populate them.

Add a kf_kqueue struct to the kf_un union, to allow querying kqueue state,
and populate it.

Populate the kf_sock_rcv_sb_state and kf_sock_snd_sb_state fields in
kf_sock for INET/INET6 sockets, and populate all other fields for all
transport layer protocols, not just TCP.

Bump __FreeBSD_version.

Differential revision: https://reviews.freebsd.org/D34184
Reviewed by: jhb, kib, se
MFC after: 1 week

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sys/user.h: Add kinfo_lockf structure to report advisory locks

Reviewed by: markj, rmacklem
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/

sys/user.h: Add kinfo_lockf structure to report advisory locks

Reviewed by: markj, rmacklem
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D34756

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proc: Add a sysctl to fetch virtual address space layout info

This provides information about fixed regions of the target process'
user memory map.

Reviewed by: kib
MFC after: 1 month
Sponsored by:

proc: Add a sysctl to fetch virtual address space layout info

This provides information about fixed regions of the target process'
user memory map.

Reviewed by: kib
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33708

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Fix some common typos in comments

- s/configuraiton/configuration/
- s/specifed/specified/
- s/compatiblity/compatibility/

MFC after: 5 days

sysctl vm.objects: report backing object and swap use

For anonymous objects, provide a handle kvo_me naming the object,
and report the handle of the backing object. This allows userspace
to deconst

sysctl vm.objects: report backing object and swap use

For anonymous objects, provide a handle kvo_me naming the object,
and report the handle of the backing object. This allows userspace
to deconstruct the shadow chain. Right now the handle is the address
of the object in KVA, but this is not guaranteed.

For the same anonymous objects, report the swap space used for actually
swapped out pages, in kvo_swapped field. I do not believe that it is
useful to report full 64bit counter there, so only uint32_t value is
returned, clamped to the max.

For kinfo_vmentry, report anonymous object handle backing the entry,
so that the shadow chain for the specific mapping can be deconstructed.

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D29771

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procstat: distinguish vm map guards in procstat vm output.

Requested and reviewed by: rwatson (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential Revision: https:/

procstat: distinguish vm map guards in procstat vm output.

Requested and reviewed by: rwatson (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28658

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Expose eventfd in the native API/ABI using a new __specialfd syscall

eventfd is a Linux system call that produces special file descriptors
for event notification. When porting Linux software, it is

Expose eventfd in the native API/ABI using a new __specialfd syscall

eventfd is a Linux system call that produces special file descriptors
for event notification. When porting Linux software, it is currently
usually emulated by epoll-shim on top of kqueues. Unfortunately, kqueues
are not passable between processes. And, as noted by the author of
epoll-shim, even if they were, the library state would also have to be
passed somehow. This came up when debugging strange HW video decode
failures in Firefox. A native implementation would avoid these problems
and help with porting Linux software.

Since we now already have an eventfd implementation in the kernel (for
the Linuxulator), it's pretty easy to expose it natively, which is what
this patch does.

Submitted by: greg@unrelenting.technology
Reviewed by: markj (previous version)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26668

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Remove the cloned file descriptors for /dev/crypto.

Crypto file descriptors were added in the original OCF import as a way
to provide per-open data (specifically the list of symmetric
sessions). Ho

Remove the cloned file descriptors for /dev/crypto.

Crypto file descriptors were added in the original OCF import as a way
to provide per-open data (specifically the list of symmetric
sessions). However, this gives a bit of a confusing API where one has
to open /dev/crypto and then invoke an ioctl to obtain a second file
descriptor. This also does not match the API used with /dev/crypto on
other BSDs or with Linux's /dev/crypto driver.

Character devices have gained support for per-open data via cdevpriv
since OCF was imported, so use cdevpriv to simplify the userland API
by permitting ioctls directly on /dev/crypto descriptors.

To provide backwards compatibility, CRIOGET now opens another
/dev/crypto descriptor via kern_openat() rather than dup'ing the
existing file descriptor. This preserves prior semantics in case
CRIOGET is invoked multiple times on a single file descriptor.

Reviewed by: markj
Relnotes: yes
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D27302

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Split out cwd/root/jail, cmask state from filedesc table

No functional change intended.

Tracking these structures separately for each proc enables future work to
correctly emulate clone(2) in linux

Split out cwd/root/jail, cmask state from filedesc table

No functional change intended.

Tracking these structures separately for each proc enables future work to
correctly emulate clone(2) in linux(4).

__FreeBSD_version is bumped (to 1300130) for consumption by, e.g., lsof.

Reviewed by: kib
Discussed with: markj, mjg
Differential Revision: https://reviews.freebsd.org/D27037

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sleep(9), sleepqueue(9): const'ify wchan pointers

_sleep(9), wakeup(9), sleepqueue(9), et al do not dereference or modify the
channel pointers provided in any way; they are merely used as intptrs in

sleep(9), sleepqueue(9): const'ify wchan pointers

_sleep(9), wakeup(9), sleepqueue(9), et al do not dereference or modify the
channel pointers provided in any way; they are merely used as intptrs into a
dictionary structure to match waiters with wakers. Correctly annotate this
such that _sleep() and wakeup() may be used on const pointers without
invoking ugly patterns like __DECONST(). Plumb const through all of the
underlying sleepqueue bits.

No functional change.

Reviewed by: rlibby
Discussed with: kib, markj
Differential Revision: https://reviews.freebsd.org/D22914

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Make pack_kinfo() available for external callers.

Reviewed by: jilles, tmunro
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D20258

Show wiring state of map entries in procstat -v.

Note that only entries wired by userspace are shown as such. In
particular, entries transiently wired by sysctl_wire_old_buffer() are
not flagged as

Show wiring state of map entries in procstat -v.

Note that only entries wired by userspace are shown as such. In
particular, entries transiently wired by sysctl_wire_old_buffer() are
not flagged as wired in procstat -v output.

Reviewed by: kib (previous version)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D19461

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Improve procstat reporting for the linux cdev file descriptors.

If there is a vnode attached to the linux file, use it to fill
kinfo_file. Otherwise, report a new KF_TYPE_DEV file type, without
sup

Improve procstat reporting for the linux cdev file descriptors.

If there is a vnode attached to the linux file, use it to fill
kinfo_file. Otherwise, report a new KF_TYPE_DEV file type, without
supplying any type-specific information.

KF_TYPE_DEV is supposed to be used by most devfs-specific file types.

Sponsored by: Mellanox Technologies
MFC after: 1 week

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Restore the API of the kf_sa_local and kf_sa_peer members.

In 11.x and earlier these were accessible as direct members of 'struct
kinfo_file'. Existing code already knows about the new location of

Restore the API of the kf_sa_local and kf_sa_peer members.

In 11.x and earlier these were accessible as direct members of 'struct
kinfo_file'. Existing code already knows about the new location of
these members as well, so wrapper macros did not work for these
fields. Instead, define an anonymous struct containing the fields
from 'struct kinfo_file' in FreeBSD 11 that were not part of the
'kf_un' union. This anonymous struct is then placed in an anonymous
union along with the new 'kf_un' union. This preserves the API of
both structure layouts without requiring any wrapper macros.

PR: 231525
Reviewed by: kib
Approved by: re (gjb)
Differential Revision: https://reviews.freebsd.org/D17262

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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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procstat(1): Add TCP socket send/recv buffer size

Add TCP socket send and receive buffer size to procstat -f output.

Reviewed by: kib, markj
Sponsored by: Dell EMC Isilon
Differential Revision: htt

procstat(1): Add TCP socket send/recv buffer size

Add TCP socket send and receive buffer size to procstat -f output.

Reviewed by: kib, markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D10689

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Commit the 64-bit inode project.

Extend the ino_t, dev_t, nlink_t types to 64-bit ints. Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_na

Commit the 64-bit inode project.

Extend the ino_t, dev_t, nlink_t types to 64-bit ints. Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_namlen to 16-bits, and change
the required alignment. Increase struct statfs f_mntfromname[] and
f_mntonname[] array length MNAMELEN to 1024.

ABI breakage is mitigated by providing compatibility using versioned
symbols, ingenious use of the existing padding in structures, and
by employing other tricks. Unfortunately, not everything can be
fixed, especially outside the base system. For instance, third-party
APIs which pass struct stat around are broken in backward and
forward incompatible ways.

Kinfo sysctl MIBs ABI is changed in backward-compatible way, but
there is no general mechanism to handle other sysctl MIBS which
return structures where the layout has changed. It was considered
that the breakage is either in the management interfaces, where we
usually allow ABI slip, or is not important.

Struct xvnode changed layout, no compat shims are provided.

For struct xtty, dev_t tty device member was reduced to uint32_t.
It was decided that keeping ABI compat in this case is more useful
than reporting 64-bit dev_t, for the sake of pstat.

Update note: strictly follow the instructions in UPDATING. Build
and install the new kernel with COMPAT_FREEBSD11 option enabled,
then reboot, and only then install new world.

Credits: The 64-bit inode project, also known as ino64, started life
many years ago as a project by Gleb Kurtsou (gleb). Kirk McKusick
(mckusick) then picked up and updated the patch, and acted as a
flag-waver. Feedback, suggestions, and discussions were carried
by Ed Maste (emaste), John Baldwin (jhb), Jilles Tjoelker (jilles),
and Rick Macklem (rmacklem). Kris Moore (kris) performed an initial
ports investigation followed by an exp-run by Antoine Brodin (antoine).
Essential and all-embracing testing was done by Peter Holm (pho).
The heavy lifting of coordinating all these efforts and bringing the
project to completion were done by Konstantin Belousov (kib).

Sponsored by: The FreeBSD Foundation (emaste, kib)
Differential revision: https://reviews.freebsd.org/D10439

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

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