GenericRikka 0f89380a3d kern/proc: expose reaper PID and subtree root in struct kinfo_proc ...

Expose process reaper metadata through struct kinfo_proc so userland
can reconstruct reaper hierarchies from kern.proc.all without adding
a new procctl(2) operation.

Two pid_t fields are added by carving 8 bytes from ki_sparestrings
(46 -> 38), restoring KI_NSPARE_INT to 2 and keeping sizeof(struct
kinfo_proc) unchanged:

  ki_reaper: PID of the owning reaper process
  ki_reapsubtree: PID of the direct child of the reaper that roots
                  the subtree the process belongs to

fill_kinfo_proc_pgrp() populates both fields under proctree_lock.
kvm_proclist() is updated for crash dump consumers. The freebsd32
compat struct and freebsd32_kinfo_proc_out() are updated accordingly.

PR:	293871
Reviewed by:	kib
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D56538

2026-04-22 02:36:07 +03:00

..

tests

…

kvm_aarch64.h

…

kvm_amd64.c

…

kvm_amd64.h

…

kvm_arm.c

…

kvm_arm.h

…

kvm_cptime.c

…

kvm_getcptime.3

…

kvm_geterr.3

…

kvm_getloadavg.3

…

kvm_getloadavg.c

…

kvm_getpcpu.3

…

kvm_getprocs.3

…

kvm_getswapinfo.3

…

kvm_getswapinfo.c

…

kvm_i386.c

…

kvm_i386.h

…

kvm_kerndisp.3

…

kvm_minidump_aarch64.c

…

kvm_minidump_amd64.c

…

kvm_minidump_arm.c

…

kvm_minidump_i386.c

…

kvm_minidump_powerpc64_hpt.c

…

kvm_minidump_powerpc64.c

…

kvm_minidump_riscv.c

…

kvm_native.3

…

kvm_nlist.3

…

kvm_open.3

libkvm/kvm_open.3: document broken full dumps

2025-06-22 06:49:32 +03:00

kvm_pcpu.c

…

kvm_powerpc64.c

…

kvm_powerpc64.h

…

kvm_powerpc.c

…

kvm_private.c

…

kvm_private.h

…

kvm_proc.c

kern/proc: expose reaper PID and subtree root in struct kinfo_proc

2026-04-22 02:36:07 +03:00

kvm_read.3

…

kvm_riscv.h

…

kvm_vnet.c

…

kvm.3

…

kvm.c

…

kvm.h

…

Makefile

…

Makefile.depend

…