stat(2): add st_bsdflags field

Reviewed by: markj, rmacklem
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D49651

kevent32/kinfo_knote32: remove __LP64__ predicate in definitions

Requested by: jrtc27
Reviewed by: kevans, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https:/

kevent32/kinfo_knote32: remove __LP64__ predicate in definitions

Requested by: jrtc27
Reviewed by: kevans, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D49483

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freebsd32/freebsd32.h: only define kinfo_knote32 when kevent32 is defined

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

struct kinfo_knote: add spare fields

This is yet another ABI breakage, hopefully the last.

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Diffferential revision: https:/

struct kinfo_knote: add spare fields

This is yet another ABI breakage, hopefully the last.

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Diffferential revision: https://reviews.freebsd.org/D49372

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sysctl KERN_PROC_KQUEUE: implement compat32

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D49372

stat(2): add st_filerev

Reviewed by: asomers, markj, olce, rmacklem
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D48452

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

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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ptrace(2): add PT_SC_REMOTE remote syscall request

Reviewed by: markj
Discussed with: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D3

ptrace(2): add PT_SC_REMOTE remote syscall request

Reviewed by: markj
Discussed with: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D37590

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compat32: move struct ptrace_sc_ret32 definition from .c to .h

Reviewed by: markj
Sponsoreed by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D37590

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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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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sys/compat: Use C99 fixed-width integer types.

No functional change.

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D33632

syscalls: improve nstat, nfstat, nlstat

Optionally return errors when truncating dev_t, ino_t, and nlink_t.
In the interest of code reuse, use freebsd11_cvtstat() to perform the
truncation and error

syscalls: improve nstat, nfstat, nlstat

Optionally return errors when truncating dev_t, ino_t, and nlink_t.
In the interest of code reuse, use freebsd11_cvtstat() to perform the
truncation and error handling and then convert the resulting struct
freebsd11_stat to struct nstat.

Add missing freebsd32 compat syscalls. These syscalls require
translation because struct nstat contains four instances of struct
timespec which in turn contains a time_t and a long.

Reviewed by: kib

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fspacectl: remove unneeded freebsd32 wrapper

fspacectl(2) does not require special handling on freebsd32. The
presence of off_t in a struct does not cause it's size to change
between the native ABI

fspacectl: remove unneeded freebsd32 wrapper

fspacectl(2) does not require special handling on freebsd32. The
presence of off_t in a struct does not cause it's size to change
between the native ABI and the 32-bit ABI supported by freebsd32
because off_t is always int64_t on BSD systems. Further, byte
order only requires handling for paired argument or return registers.

(32-byte alignment of 64-bit objects on i386 can require special
handling, but that situtation does not apply here.)

Reviewed by: kib, khng, emaste, delphij
Differential Revision: https://reviews.freebsd.org/D32994

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freebsd32: add feed foward clock syscalls

These are required when supporting i386 because time_t is 32-bit which
reduces struct bintime to 12-bytes when combined with the fact that 64-bit
integers o

freebsd32: add feed foward clock syscalls

These are required when supporting i386 because time_t is 32-bit which
reduces struct bintime to 12-bytes when combined with the fact that 64-bit
integers only requiring 32-bit alignment on i386. Reusing the default
ABI version resulted in 4-byte overreads or overwrites to userspace.

Reviewed by: kevans

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freebsd32: rename struct wrusage32 to struct __wrusage32

This matches struct __wrusage

Reviewed by: kevans

freebsd32: struct kld32_file_stat -> struct kld_file_stat32

Follow common convention and put the `32` on the end of the struct
name. This is a step toward generating freebsd32 syscall files
from sy

freebsd32: struct kld32_file_stat -> struct kld_file_stat32

Follow common convention and put the `32` on the end of the struct
name. This is a step toward generating freebsd32 syscall files
from sys/kern/syscalls.master.

Reviewed by: kevans

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freebsd32: fix types on statfs syscalls

Rename struct statfs32 to struct ostatfs32 to mirror struct ostatfs.
These structs are use for COMPAT4 support. Stop using struct statfs32
for modern impleme

freebsd32: fix types on statfs syscalls

Rename struct statfs32 to struct ostatfs32 to mirror struct ostatfs.
These structs are use for COMPAT4 support. Stop using struct statfs32
for modern implementations as struct statfs uses fixed-width types
and it the same on all architectures.

Reviewed by: kevans

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Add fspacectl(2), vn_deallocate(9) and VOP_DEALLOCATE(9).

fspacectl(2) is a system call to provide space management support to
userspace applications. VOP_DEALLOCATE(9) is a VOP call to perform the

Add fspacectl(2), vn_deallocate(9) and VOP_DEALLOCATE(9).

fspacectl(2) is a system call to provide space management support to
userspace applications. VOP_DEALLOCATE(9) is a VOP call to perform the
deallocation. vn_deallocate(9) is a public KPI for kmods' use.

The purpose of proposing a new system call, a KPI and a VOP call is to
allow bhyve or other hypervisor monitors to emulate the behavior of SCSI
UNMAP/NVMe DEALLOCATE on a plain file.

fspacectl(2) comprises of cmd and flags parameters to specify the
space management operation to be performed. Currently cmd has to be
SPACECTL_DEALLOC, and flags has to be 0.

fo_fspacectl is added to fileops.
VOP_DEALLOCATE(9) is added as a new VOP call. A trivial implementation
of VOP_DEALLOCATE(9) is provided.

Sponsored by: The FreeBSD Foundation
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D28347

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Add ptrace(PT_COREDUMP)

It writes the core of live stopped process to the file descriptor
provided as an argument.

Based on the initial version from https://reviews.freebsd.org/D29691,
submitted by

Add ptrace(PT_COREDUMP)

It writes the core of live stopped process to the file descriptor
provided as an argument.

Based on the initial version from https://reviews.freebsd.org/D29691,
submitted by Michał Górny <mgorny@gentoo.org>.

Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D29955

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Fix compat32 for ntp_adjtime(2).

struct timex is not 32-bit safe, it uses longs for members.
Provide translation.

Reviewed by: brooks, cy
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Diff

Fix compat32 for ntp_adjtime(2).

struct timex is not 32-bit safe, it uses longs for members.
Provide translation.

Reviewed by: brooks, cy
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D27471

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freebsd32: take the _umtx_op struct definitions back

Providing these in freebsd32.h facilitates local testing/measuring of the
structs rather than forcing one to locally recreate them. Sanity checki

freebsd32: take the _umtx_op struct definitions back

Providing these in freebsd32.h facilitates local testing/measuring of the
structs rather than forcing one to locally recreate them. Sanity checking
offsets/sizes remains in kern_umtx.c where these are typically used.

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_umtx_op: move compat32 definitions back in

These are reasonably compact, and a future commit will blur the compat32
lines by supporting 32-bit operations with the native _umtx_op.

umtx_op: reduce redundancy required for compat32

All of the compat32 variants are substantially the same, save for
copyin/copyout (mostly). Apply the same kind of technique used with kevent
here by

umtx_op: reduce redundancy required for compat32

All of the compat32 variants are substantially the same, save for
copyin/copyout (mostly). Apply the same kind of technique used with kevent
here by having the syscall routines supply a umtx_copyops describing the
operations needed.

umtx_copyops carries the bare minimum needed- size of timespec and
_umtx_time are used for determining if copyout is needed in the sem2_wait
case.

Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D27222

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