* [PR PATCH] [RFC] screen: don't enable multiuser mode by default.
@ 2021-04-14 20:18 ericonr
2021-07-22 19:21 ` [PR PATCH] [Merged]: " ericonr
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: ericonr @ 2021-04-14 20:18 UTC (permalink / raw)
To: ml
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There is a new pull request by ericonr against master on the void-packages repository
https://github.com/ericonr/void-packages screen
https://github.com/void-linux/void-packages/pull/30241
[RFC] screen: don't enable multiuser mode by default.
This requires that the screen binary be suid.
<!-- Mark items with [x] where applicable -->
#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)
#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR
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- [ ] aarch64-musl
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A patch file from https://github.com/void-linux/void-packages/pull/30241.patch is attached
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: github-pr-screen-30241.patch --]
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From 341e44c40f798d985135319e46f8a14b35a45bd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89rico=20Nogueira?= <erico.erc@gmail.com>
Date: Wed, 14 Apr 2021 17:17:30 -0300
Subject: [PATCH] screen: don't enable multiuser mode by default.
This requires that the screen binary be suid.
---
srcpkgs/screen/template | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/srcpkgs/screen/template b/srcpkgs/screen/template
index 613696d9f373..4fcf97e83e91 100644
--- a/srcpkgs/screen/template
+++ b/srcpkgs/screen/template
@@ -1,7 +1,7 @@
# Template file for 'screen'
pkgname=screen
version=4.8.0
-revision=2
+revision=3
build_style=gnu-configure
configure_args="--with-sys-screenrc=/etc/screenrc --enable-pam
--enable-colors256 --enable-rxvt_osc --enable-telnet
@@ -15,10 +15,14 @@ homepage="http://www.gnu.org/s/screen/"
distfiles="${GNU_SITE}/$pkgname/$pkgname-$version.tar.gz"
checksum=6e11b13d8489925fde25dfb0935bf6ed71f9eb47eff233a181e078fde5655aa1
+build_options="multiuser"
+
post_install() {
vinstall etc/etcscreenrc 0644 etc screenrc
vinstall etc/screenrc 0644 etc/skel .screenrc
vinstall ${FILESDIR}/screen 0644 etc/pam.d
- chmod 4755 ${DESTDIR}/usr/bin/screen-${version}
+ if [ "$build_option_multiuser" ]; then
+ chmod 4755 ${DESTDIR}/usr/bin/screen-${version}
+ fi
}
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PR PATCH] [Merged]: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
@ 2021-07-22 19:21 ` ericonr
2021-07-23 17:01 ` tornaria
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: ericonr @ 2021-07-22 19:21 UTC (permalink / raw)
To: ml
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There's a merged pull request on the void-packages repository
[RFC] screen: don't enable multiuser mode by default.
https://github.com/void-linux/void-packages/pull/30241
Description:
This requires that the screen binary be suid.
<!-- Mark items with [x] where applicable -->
#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)
#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR
<!--
If GitHub CI cannot be used to validate the build result (for example, if the
build is likely to take several hours), make sure to
[skip CI](https://github.com/void-linux/void-packages/blob/master/CONTRIBUTING.md#continuous-integration).
When skipping CI, uncomment and fill out the following section.
Note: for builds that are likely to complete in less than 2 hours, it is not
acceptable to skip CI.
-->
<!--
#### Does it build and run successfully?
(Please choose at least one native build and, if supported, at least one cross build. More are better.)
- [ ] I built this PR locally for my native architecture, (ARCH-LIBC)
- [ ] I built this PR locally for these architectures (if supported. mark crossbuilds):
- [ ] aarch64-musl
- [ ] armv7l
- [ ] armv6l-musl
-->
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
2021-07-22 19:21 ` [PR PATCH] [Merged]: " ericonr
@ 2021-07-23 17:01 ` tornaria
2021-07-23 17:14 ` ericonr
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: tornaria @ 2021-07-23 17:01 UTC (permalink / raw)
To: ml
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New comment by tornaria on void-packages repository
https://github.com/void-linux/void-packages/pull/30241#issuecomment-885774338
Comment:
This actually prevents screen from running at all:
```
$ screen
Cannot make directory '/run/screens': Permission denied
```
Ideas:
- Maybe some init script should `mkdir -m 1777 /run/screens` at startup?
- Maybe removing `--with-socket-dir=/run/screens` would use an alternative default which works for all users?
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
2021-07-22 19:21 ` [PR PATCH] [Merged]: " ericonr
2021-07-23 17:01 ` tornaria
@ 2021-07-23 17:14 ` ericonr
2021-07-23 17:24 ` ericonr
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: ericonr @ 2021-07-23 17:14 UTC (permalink / raw)
To: ml
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New comment by ericonr on void-packages repository
https://github.com/void-linux/void-packages/pull/30241#issuecomment-885782222
Comment:
Damnit, I only tested when the directory already existed :/
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
` (2 preceding siblings ...)
2021-07-23 17:14 ` ericonr
@ 2021-07-23 17:24 ` ericonr
2021-07-23 17:32 ` tornaria
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: ericonr @ 2021-07-23 17:24 UTC (permalink / raw)
To: ml
[-- Attachment #1: Type: text/plain, Size: 447 bytes --]
New comment by ericonr on void-packages repository
https://github.com/void-linux/void-packages/pull/30241#issuecomment-885787475
Comment:
> Maybe removing --with-socket-dir=/run/screens would use an alternative default which works for all users?
Would be nice but breaks existing sessions unless the person sets SCREENDIR. I think that's worse...
> Maybe some init script should mkdir -m 1777 /run/screens at startup?
Good enough, IMO.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
` (3 preceding siblings ...)
2021-07-23 17:24 ` ericonr
@ 2021-07-23 17:32 ` tornaria
2021-07-23 17:32 ` ericonr
2021-07-23 17:36 ` ericonr
6 siblings, 0 replies; 8+ messages in thread
From: tornaria @ 2021-07-23 17:32 UTC (permalink / raw)
To: ml
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New comment by tornaria on void-packages repository
https://github.com/void-linux/void-packages/pull/30241#issuecomment-885791498
Comment:
I also like the `mkdir` choice better, because it allows one to easily reenable multiuser screen by just making the binary setuid.
Note that since `/run` is cleaned at reboots (or a tmpfs) the directory has to be created at every boot, not at install time.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
` (4 preceding siblings ...)
2021-07-23 17:32 ` tornaria
@ 2021-07-23 17:32 ` ericonr
2021-07-23 17:36 ` ericonr
6 siblings, 0 replies; 8+ messages in thread
From: ericonr @ 2021-07-23 17:32 UTC (permalink / raw)
To: ml
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New comment by ericonr on void-packages repository
https://github.com/void-linux/void-packages/pull/30241#issuecomment-885791878
Comment:
I am opening a PR in a bit. Initially I went with removing socket-dir, but realized the potential for breakage.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC] screen: don't enable multiuser mode by default.
2021-04-14 20:18 [PR PATCH] [RFC] screen: don't enable multiuser mode by default ericonr
` (5 preceding siblings ...)
2021-07-23 17:32 ` ericonr
@ 2021-07-23 17:36 ` ericonr
6 siblings, 0 replies; 8+ messages in thread
From: ericonr @ 2021-07-23 17:36 UTC (permalink / raw)
To: ml
[-- Attachment #1: Type: text/plain, Size: 205 bytes --]
New comment by ericonr on void-packages repository
https://github.com/void-linux/void-packages/pull/30241#issuecomment-885793596
Comment:
@tornaria https://github.com/void-linux/void-packages/pull/32159
^ permalink raw reply [flat|nested] 8+ messages in thread
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2021-07-23 17:01 ` tornaria
2021-07-23 17:14 ` ericonr
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