Changes in sysconf.3

d617806aac1469319970e3551656e9deabb98a35 - libc: report _SC_NPROCESSORS_ONLN more accurately in cpu-limited jails

Wed, 29 Oct 2025 17:32:30 +0100

libc: report _SC_NPROCESSORS_ONLN more accurately in cpu-limited jailsWe don't support CPU hotplug, but we do support cpuset(8) restrictionson jails (including prison0, which uses cpuset 1). The process cannotwiden its cpuset beyond its root set, so it makes sense to insteadreport the number of cpus enabled there rather than the total numberin the system.This change is effectively a nop for the majority of systems and jailsin the wild, though it does reduce the performance of this query nowthat we can't take advantage of AT_NCPUS being provided in the auxinfo.The implementation here is notably different than Linux, which would nottake cgroups into account. They do, however, take CPU hotplug intoaccount, so the possibility for it to diverge from (and be lower than)the # configured count to reflect what the process can actually bescheduled on doesn't really diverge in semantics.Reviewed by: kibDifferential Revision: https://reviews.freebsd.org/D52295 List of files: /freebsd/lib/libc/gen/sysconf.3

dc36d6f9bb1753f3808552f3afd30eda9a7b206a - lib: Remove ancient SCCS tags.

Thu, 23 Nov 2023 18:21:37 +0100

lib: Remove ancient SCCS tags.Remove ancient SCCS tags from the tree, automated scripting, with twominor fixup to keep things compiling. All the common forms in the treewere removed with a perl script.Sponsored by: Netflix List of files: /freebsd/lib/libc/gen/sysconf.3

b2c76c41be32f904179efed29c0ca04d53f3996c - Remove $FreeBSD$: one-line nroff pattern

Wed, 16 Aug 2023 19:55:15 +0200

Remove $FreeBSD$: one-line nroff patternRemove /^\.\\"\s*\$FreeBSD\$$\n/ List of files: /freebsd/lib/libc/gen/sysconf.3

348238dbd42306d9fb5d89ab393b840572cfeb0f - Merge ^/head r314420 through r314481.

Wed, 01 Mar 2017 09:22:51 +0100

Merge ^/head r314420 through r314481. List of files: /freebsd/lib/libc/gen/sysconf.3

fbbd9655e5107c68e4e0146ff22b73d7350475bc - Renumber copyright clause 4

Wed, 01 Mar 2017 00:42:47 +0100

Renumber copyright clause 4Renumber cluase 4 to 3, per what everybody else did when BSD grantedthem permission to remove clause 3. My insistance on keeping the samenumbering for legal reasons is too pedantic, so give up on that point.Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96 List of files: /freebsd/lib/libc/gen/sysconf.3

d1d015864103b253b3fcb2f72a0da5b0cfeb31b6 - Merge from head

Thu, 05 Sep 2013 22:18:59 +0200

Merge from head List of files: /freebsd/lib/libc/gen/sysconf.3

40f65a4df509c6b29b9e72407c7afefe28838844 - IFC @ r254014

Wed, 07 Aug 2013 02:09:49 +0200

IFC @ r254014 List of files: /freebsd/lib/libc/gen/sysconf.3

552311f4bb98c81b1b9e0e81d74e0262fc12110b - IFC @253398

Wed, 17 Jul 2013 03:32:29 +0200

IFC @253398 List of files: /freebsd/lib/libc/gen/sysconf.3

cfe30d02adda7c3b5c76156ac52d50d8cab325d9 - Merge fresh head.

Wed, 19 Jun 2013 13:36:13 +0200

Merge fresh head. List of files: /freebsd/lib/libc/gen/sysconf.3

34d0fed913ffbb0f5dd66515f3d171295c87e9ea - sysconf(3): Correct the description of _SC_OPEN_MAX.

Fri, 26 Apr 2013 23:43:42 +0200

sysconf(3): Correct the description of _SC_OPEN_MAX.Reported by: bdeMFC after: 1 week List of files: /freebsd/lib/libc/gen/sysconf.3

6a068746777241722b2b32c5d0bc443a2a64d80b - MFC

Tue, 15 May 2012 02:42:12 +0200

MFC List of files: /freebsd/lib/libc/gen/sysconf.3

38f1b189cd839bd8aa122ae06cc084810ca1e395 - IFC @ r234692

Thu, 26 Apr 2012 09:52:28 +0200

IFC @ r234692sys/amd64/include/cpufunc.hsys/amd64/include/fpu.hsys/amd64/amd64/fpu.csys/amd64/vmm/vmm.c - Add API to allow vmm FPU state init/save/restore.FP stuff discussed with: kib List of files: /freebsd/lib/libc/gen/sysconf.3

8833b15f6382203d094cd6eb69068709b467079d - Merge head r232686 through r233825 into projects/pf/head.

Tue, 03 Apr 2012 10:24:32 +0200

Merge head r232686 through r233825 into projects/pf/head. List of files: /freebsd/lib/libc/gen/sysconf.3

50d675f7a9fca2f3fba3a23ac41a8ae2c0162e4e - Remove trailing whitespace per mdoc lint warning

Thu, 29 Mar 2012 07:02:12 +0200

Remove trailing whitespace per mdoc lint warningDisussed with: gavinNo objection from: docApproved by: joelMFC after: 3 days List of files: /freebsd/lib/libc/gen/sysconf.3

dcdb20992448f16397a3bcb127235c405c763ea6 - Document some more sysconf(3) variables.

Sun, 13 Feb 2011 18:43:56 +0100

Document some more sysconf(3) variables.MFC after: 1 month List of files: /freebsd/lib/libc/gen/sysconf.3

a4bf5fb987611aeb78c422312b63b185e39982d7 - Update to current version of head.

Wed, 28 Apr 2010 07:33:59 +0200

Update to current version of head. List of files: /freebsd/lib/libc/gen/sysconf.3

a17c1cc009da9c4c4535c5f1114fdd704f0ad9e9 - mdoc: remove .Pp where not needed

Wed, 14 Apr 2010 20:29:26 +0200

mdoc: remove .Pp where not neededThis trips up mdocml and can simply go away.Reviewed by: ruApproved by: philip, ed (mentors) List of files: /freebsd/lib/libc/gen/sysconf.3

c879ae3536e6d92b8d96c8965c5b05fcb9541520 - Per Regents of the University of Calfornia letter, remove advertising

Tue, 09 Jan 2007 01:28:16 +0100

Per Regents of the University of Calfornia letter, remove advertisingclause.# If I've done so improperly on a file, please let me know. List of files: /freebsd/lib/libc/gen/sysconf.3

93a8a97ce9cafc3f457d6926eae1e8c716c5d072 - Add support for _SC_PHYS_PAGES, which is not standard, but can be found in

Thu, 14 Dec 2006 15:32:59 +0100

Add support for _SC_PHYS_PAGES, which is not standard, but can be found inSolaris and Linux. List of files: /freebsd/lib/libc/gen/sysconf.3

e5d6d64110182e32c97879c8b7eb6a496b0618ba - Document _SC_PAGESIZE. There are still 85 undocumented variables.

Thu, 14 Dec 2006 15:27:15 +0100

Document _SC_PAGESIZE. There are still 85 undocumented variables.Obtained from: NetBSD List of files: /freebsd/lib/libc/gen/sysconf.3