src/sbin/sysctl, branch stable/13 FreeBSD source tree sysctl: Teach sysctl to attach and run itself in a jail 2025-02-06T16:08:53+00:00 Zhenlei Huang zlei@FreeBSD.org 2025-01-30T18:20:41+00:00 5b0a5d8c1ea33ae7afb56d6c452df7e90ed54e9e This allows the parent jail to retrieve or set kernel state when child does not have sysctl(8) installed (e.g. light weighted OCI containers or slim jails). This is especially useful when manipulating jail prison or vnet sysctls. For example, `sysctl -j foo -Ja` or `sysctl -j foo net.fibs=2`. Reviewed by: dfr (previous version), markj MFC after: 1 week Relnotes: yes Differential Revision: https://reviews.freebsd.org/D48618 (cherry picked from commit 08aa7128dea4d14811ae4a0225d7c678869cfe62) (cherry picked from commit 8d5d7e2ba3a685a9ebe7aa578c6b76adf8fe4c2e) 
This allows the parent jail to retrieve or set kernel state when child
does not have sysctl(8) installed (e.g. light weighted OCI containers
or slim jails).

This is especially useful when manipulating jail prison or vnet sysctls.
For example, `sysctl -j foo -Ja` or `sysctl -j foo net.fibs=2`.

Reviewed by:	dfr (previous version), markj
MFC after:	1 week
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D48618

(cherry picked from commit 08aa7128dea4d14811ae4a0225d7c678869cfe62)
(cherry picked from commit 8d5d7e2ba3a685a9ebe7aa578c6b76adf8fe4c2e)
sysctl: Refactor function parsefile() 2025-02-06T16:08:52+00:00 Zhenlei Huang zlei@FreeBSD.org 2025-01-30T18:20:41+00:00 73a516c6527c84701921c329d4f08da44522ccc4 Let the caller open the file and pass in the file handler. This can benefit an upcoming change so that we will have cleaner logic. No functional change intended. Suggested by: markj MFC after: 1 week (cherry picked from commit 6193855fc76c591ffabe6168cd674e6ec0dafa8e) (cherry picked from commit 4ef48d172bb11f01174fff871d69623eed59d626) 
Let the caller open the file and pass in the file handler. This can
benefit an upcoming change so that we will have cleaner logic.

No functional change intended.

Suggested by:	markj
MFC after:	1 week

(cherry picked from commit 6193855fc76c591ffabe6168cd674e6ec0dafa8e)
(cherry picked from commit 4ef48d172bb11f01174fff871d69623eed59d626)
sysctl: Fix usage() and SYNOPSIS section of man page 2025-01-25T11:56:41+00:00 Zhenlei Huang zlei@FreeBSD.org 2025-01-23T07:24:15+00:00 47560d54be59f89e1768e7b4d81f5c599a9c59ef I forgot to update the usage() and SYNOPSIS section of man page when adding the two options -J and -V. While here, fix the options sort order in SYNOPSIS section. Fixes: 5ec83c660aca sysctl: Add flags to filter jail prison and vnet variables MFC after: 1 day (cherry picked from commit 0ee3e29e1d9ee3ed22441c0d580d2d1e57a1d9e3) (cherry picked from commit 1d890d546b064f2c7753b949f5dbf00d79cde292) 
I forgot to update the usage() and SYNOPSIS section of man page when
adding the two options -J and -V.

While here, fix the options sort order in SYNOPSIS section.

Fixes:	5ec83c660aca sysctl: Add flags to filter jail prison and vnet variables
MFC after:	1 day

(cherry picked from commit 0ee3e29e1d9ee3ed22441c0d580d2d1e57a1d9e3)
(cherry picked from commit 1d890d546b064f2c7753b949f5dbf00d79cde292)
sysctl: Add flags to filter jail prison and vnet variables 2025-01-23T09:47:10+00:00 Zhenlei Huang zlei@FreeBSD.org 2024-10-29T11:26:11+00:00 09cbd68e4e4728dbac768937b35ad09995c20fea So users do not have to contact the source code to tell whether a variable is a jail prison / vnet one or not. Reviewed by: cy (previous version), markj, jamie (for #jails) MFC after: 2 weeks Relnotes: yes Differential Revision: https://reviews.freebsd.org/D47107 (cherry picked from commit 5ec83c660acaf30c1d6b9417dbd8c80dfa9d56ac) 
So users do not have to contact the source code to tell whether a
variable is a jail prison / vnet one or not.

Reviewed by:	cy (previous version), markj, jamie (for #jails)
MFC after:	2 weeks
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D47107

(cherry picked from commit 5ec83c660acaf30c1d6b9417dbd8c80dfa9d56ac)
sysctl.8: fix format typo 2024-10-15T05:18:39+00:00 Igor Ostapenko pm@igoro.pro 2024-01-23T14:34:59+00:00 54cb2f5b8b89e57f20068f26f00466e22a6b9057 Signed-off-by: Igor Ostapenko <pm@igoro.pro> (cherry picked from commit 380b7eb309478e1aac1609a3dfe1c28436add1c4) 
Signed-off-by: Igor Ostapenko <pm@igoro.pro>
(cherry picked from commit 380b7eb309478e1aac1609a3dfe1c28436add1c4)
sysctl(8): Mention more security.bsd knobs; Refer to security(7) 2023-12-21T13:38:39+00:00 Olivier Certner olce.freebsd@certner.fr 2023-08-17T23:54:49+00:00 f63da970458592f7488796da4e8c07f9e5314b31 Reviewed by: mhorne, pauamma_gundo.com, emaste Sponsored by: Kumacom SAS Differential Revision: https://reviews.freebsd.org/D41113 (cherry picked from commit 8d7a48d367ffde2a29419ef943c4099984e3af4d) Approved by: markj (mentor) 
Reviewed by:            mhorne, pauamma_gundo.com, emaste
Sponsored by:           Kumacom SAS
Differential Revision:  https://reviews.freebsd.org/D41113

(cherry picked from commit 8d7a48d367ffde2a29419ef943c4099984e3af4d)

Approved by:    markj (mentor)
Remove $FreeBSD$: one-line nroff pattern 2023-08-23T17:43:32+00:00 Warner Losh imp@FreeBSD.org 2023-08-22T01:32:13+00:00 24115b70d6d614ed7ac5cfc4f51fa9d6cfe8b1b2 Remove /^\.\\"\s*\$FreeBSD\$$\n/ Similar commit in main: (cherry picked from commit b2c76c41be32) 
Remove /^\.\\"\s*\$FreeBSD\$$\n/

Similar commit in main:
(cherry picked from commit b2c76c41be32)
Remove $FreeBSD$: one-line sh pattern 2023-08-23T17:43:30+00:00 Warner Losh imp@FreeBSD.org 2023-08-22T01:32:01+00:00 023fc80ee38a117fa65b2ccb2abf8bdc7dbd6fd9 Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/ Similar commit in main: (cherry picked from commit d0b2dbfa0ecf) 
Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Similar commit in main:
(cherry picked from commit d0b2dbfa0ecf)
Remove $FreeBSD$: one-line .c pattern 2023-08-23T17:43:26+00:00 Warner Losh imp@FreeBSD.org 2023-08-22T01:31:41+00:00 3d497e17ebd33fe0f58d773e35ab994d750258d6 Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/ Similar commit in main: (cherry picked from commit 1d386b48a555) 
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Similar commit in main:
(cherry picked from commit 1d386b48a555)
sysctl.8: Reference sysctl(9) 2022-07-07T09:56:18+00:00 Mateusz Piotrowski 0mp@FreeBSD.org 2022-06-30T13:34:58+00:00 76b06d5a1a7486af72deb572b00e5a231676d59e MFC after: 1 week (cherry picked from commit 0438e9beb552b5e33c5d54748395429c6f9b8075) 
MFC after:	1 week

(cherry picked from commit 0438e9beb552b5e33c5d54748395429c6f9b8075)