libprocstat: add procstat_getrlimitusage()

(cherry picked from commit 6126f4ea646a3c19647c3efdcf672641cff6954b)

libprocstat: improve conditional for 32-bit compat

Include support for translating 32-bit auxv vectors on non-64-bit
platforms that aren't riscv (which has no 32-bit ABI support and
probably never w

libprocstat: improve conditional for 32-bit compat

Include support for translating 32-bit auxv vectors on non-64-bit
platforms that aren't riscv (which has no 32-bit ABI support and
probably never will).

Reviewed by: markj
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42201

(cherry picked from commit 248fe3d3483cb3ec2c78dd31dc02a467060a6577)

show more ...

libprocstat: copy all the 32-bit auxv entries

Use source struct size not the destination struct size so we copy all
the auxv entries, not just the first half of them.

Fix a style issue on an adjace

libprocstat: copy all the 32-bit auxv entries

Use source struct size not the destination struct size so we copy all
the auxv entries, not just the first half of them.

Fix a style issue on an adjacent line.

Reviewed by: markj
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42200

(cherry picked from commit 8f06fabe39ac3ebca4ab448a456945008305a23f)

show more ...

libprocstat: make sv_name not static

Making this variable static makes is_elf32_sysctl() and callers thread
unsafe.

Use a less absurd length for sv_name. The longest name in the system is
"FreeBSD

libprocstat: make sv_name not static

Making this variable static makes is_elf32_sysctl() and callers thread
unsafe.

Use a less absurd length for sv_name. The longest name in the system is
"FreeBSD ELF64 V2" which tips the scales at 16+1 bytes. We'll almost
certainly have other problems if we exceed 32 characters.

Reviewed by: markj
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42199

(cherry picked from commit 72a4ee26a7c665ae1c31abe1c6feeaa7ccaba140)

show more ...

libprocstat: simplify auxv value conversion

Avoid a weird dance through the union and treat all 32-bit values as
unsigned integers. This avoids sign extension of flags and userspace
pointers.

Revi

libprocstat: simplify auxv value conversion

Avoid a weird dance through the union and treat all 32-bit values as
unsigned integers. This avoids sign extension of flags and userspace
pointers.

Reviewed by: markj
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42198

(cherry picked from commit 9735cc0e41825bb9e95d16433d381ffe4c190f38)

show more ...

libprocstat: style: space after switch

Style demands a space after the switch keyword.

Noticed reviewing code in CheriBSD that propagated the style bug.

Reported by: markj
Sponsored by: DARPA
Revi

libprocstat: style: space after switch

Style demands a space after the switch keyword.

Noticed reviewing code in CheriBSD that propagated the style bug.

Reported by: markj
Sponsored by: DARPA
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D42041

(cherry picked from commit ccac440f7cbb013de41aa3933f3f7be77225c44f)

show more ...

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

libprocstat: add procstat_getadvlock(3)

For now, only for sysctl target. This is not a new situation, for
instance kstacks also work for sysctl only.

Reviewed by: markj, rmacklem
Sponsored by: The

libprocstat: add procstat_getadvlock(3)

For now, only for sysctl target. This is not a new situation, for
instance kstacks also work for sysctl only.

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

show more ...

procstat_getfiles_sysctl: do not require non-null ki_fd

ki_fd is legitimately NULL when 32bit process requests process data
from 64bit host kernel. The field is not used by the code for sysctl
case

procstat_getfiles_sysctl: do not require non-null ki_fd

ki_fd is legitimately NULL when 32bit process requests process data
from 64bit host kernel. The field is not used by the code for sysctl
case; procstat_getfiles_kvm() checks ki_fd.

PR: 260174
Reported by: Damjan Jovanovic <[email protected]>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week

show more ...

Style

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

libprocstat kstack: fix race with thread creation

When collecting kernel stacks for a target process, if the process
adds a thread between the two calls to sysctl, ignore the additional
threads. Pr

libprocstat kstack: fix race with thread creation

When collecting kernel stacks for a target process, if the process
adds a thread between the two calls to sysctl, ignore the additional
threads. Previously, procstat would print only a useless error
message. Now, it prints a consistent snapshot of the stacks.
We know that snapshot is already stale, but it could still be stale
even with a more complex fix to reallocate and retry, so such a fix
is hardly worth the effort.

Reported by: [email protected]
MFC after: 1 week
Sponsored by: Dell EMC Isilon

show more ...

Remove #define _KERNEL hacks from libprocstat

Make sys/buf.h, sys/pipe.h, sys/fs/devfs/devfs*.h headers usable in
userspace, assuming that the consumer has an idea what it is for.
Unhide more materi

Remove #define _KERNEL hacks from libprocstat

Make sys/buf.h, sys/pipe.h, sys/fs/devfs/devfs*.h headers usable in
userspace, assuming that the consumer has an idea what it is for.
Unhide more material from sys/mount.h and sys/ufs/ufs/inode.h,
sys/ufs/ufs/ufsmount.h for consumption of userspace tools, with the
same caveat.

Remove unacceptable hack from usr.sbin/makefs which relied on sys/buf.h
being unusable in userspace, where it override struct buf with its own
definition. Instead, provide struct m_buf and struct m_vnode and adapt
code to use local variants.

Reviewed by: mckusick
Tested by: pho
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D28679

show more ...

Decode and report native eventfd descriptors from libprocstat and procstat.

Submitted by: [email protected]
Reviewed by: markj (previous version)
MFC after: 2 weeks
Differential

Decode and report native eventfd descriptors from libprocstat and procstat.

Submitted by: [email protected]
Reviewed by: markj (previous version)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26668

show more ...

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

show more ...

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

show more ...

Merge OpenZFS support in to HEAD.

The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.

I would a

Merge OpenZFS support in to HEAD.

The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.

I would advise against doing 'zpool upgrade'
or creating indispensable pools using new
features until this change has had a month+
to soak.

Work on merging FreeBSD support in to what was
at the time "ZFS on Linux" began in August 2018.
I first publicly proposed transitioning FreeBSD
to (new) OpenZFS on December 18th, 2018. FreeBSD
support in OpenZFS was finally completed in December
2019. A CFT for downstreaming OpenZFS support in
to FreeBSD was first issued on July 8th. All issues
that were reported have been addressed or, for
a couple of less critical matters there are
pull requests in progress with OpenZFS. iXsystems
has tested and dogfooded extensively internally.
The TrueNAS 12 release is based on OpenZFS with
some additional features that have not yet made
it upstream.

Improvements include:
project quotas, encrypted datasets,
allocation classes, vectorized raidz,
vectorized checksums, various command line
improvements, zstd compression.

Thanks to those who have helped along the way:
Ryan Moeller, Allan Jude, Zack Welch, and many
others.

Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25872

show more ...

libprocstat: fix kvm filedesc access after introduction of fdescenttbl

libprocstat: fix reading of file descriptor table via kvm

This seems to have been broken since r247602 (from year 2013!).
Can be easily tested with
fstat -N /boot/kernel/kernel -M /var/crash/vmcor

libprocstat: fix reading of file descriptor table via kvm

This seems to have been broken since r247602 (from year 2013!).
Can be easily tested with
fstat -N /boot/kernel/kernel -M /var/crash/vmcore.last

MFC after: 1 week
Sponsored by: Panzura

show more ...

fd: use smr for managing struct pwd

This has a side effect of eliminating filedesc slock/sunlock during path
lookup, which in turn removes contention vs concurrent modifications to the fd
table.

Re

fd: use smr for managing struct pwd

This has a side effect of eliminating filedesc slock/sunlock during path
lookup, which in turn removes contention vs concurrent modifications to the fd
table.

Reviewed by: markj, kib
Differential Revision: https://reviews.freebsd.org/D23889

show more ...

fd: move vnodes out of filedesc into a dedicated structure

The new structure is copy-on-write. With the assumption that path lookups are
significantly more frequent than chdirs and chrooting this is

fd: move vnodes out of filedesc into a dedicated structure

The new structure is copy-on-write. With the assumption that path lookups are
significantly more frequent than chdirs and chrooting this is a win.

This provides stable root and jail root vnodes without the need to reference
them on lookup, which in turn means less work on globally shared structures.
Note this also happens to fix a bug where jail vnode was never referenced,
meaning subsequent access on lookup could run into use-after-free.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D23884

show more ...

procstat: read lo_name instead of now removed v_tag

Define a vm_map method for user-space for advancing from a map entry
to its successor in cases where examining a map entry requires a
helper like kvm_read_all. Use that method, with kvm_read_all, to

Define a vm_map method for user-space for advancing from a map entry
to its successor in cases where examining a map entry requires a
helper like kvm_read_all. Use that method, with kvm_read_all, to fix
procstat_getfiles_kvm, which tries to find the successor now without
using such a helper. This addresses a problem introduced by r355491.

Reviewed by: markj (previous version)
Discussed with: kib
Differential Revision: https://reviews.freebsd.org/D22728

show more ...

Fix a type error in fixing libprocstat to be compatible with vm_map changes.

Approved by: markj
Differential Revision: https://reviews.freebsd.org/D22726

r355491 broke compilation of libprocstat.c. Change that code to use
new methods for accessing first, next map entries.

Approved by: kib
Differential Revision: https://reviews.freebsd.org/D22725

Print type designator 'D' for the KF_TYPE_DEV files.

No type-specific data is provided by the kernel.

Sponsored by: Mellanox Technologies
MFC after: 1 week