[PATCH 0/2] Optionally allow ttynull to be selected as a default console

[PATCH 0/2] Optionally allow ttynull to be selected as a default console

[n3rdopolis]

When switching to a CONFIG_VT=n world, at least on x86 systems,
/dev/console becomes /dev/ttyS0. This can cause some undesired effects.
/dev/console's behavior is now tied to the physical /dev/ttyS0, which when
disconnected can cause isatty() to fail when /dev/ttyS0 is disconnected,
and users who upgrade to a theoretical vt-less kernel from their
distribution who have a device such as a science instrument connected to
their /dev/ttyS0 port will suddenly see it receive kernel log messages.

When the new CONFIG_NULL_TTY_CONSOLE option is turned on, this will allow
the ttynull device to be leveraged as the default console. Distributions
that had CONFIG_VT turned on before will be able to leverage this option
to where /dev/console is still backed by a psuedo device, avoiding these
issues, without needing to enable the entire VT subsystem.

n3rdopolis (2):
  ttynull: Add an option to allow ttynull to be used as a console device
  tty: Change order of ttynull to be loaded sooner.

 drivers/tty/Kconfig   | 18 +++++++++++++++++-
 drivers/tty/Makefile  |  3 ++-
 drivers/tty/ttynull.c | 16 +++++++++++++++-
 3 files changed, 34 insertions(+), 3 deletions(-)

-- 
2.45.2

[PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[n3rdopolis]

Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
initialized by console_initcall() and selected as a possible console
device.
Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
---
 drivers/tty/Kconfig   | 18 +++++++++++++++++-
 drivers/tty/ttynull.c | 16 +++++++++++++++-
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 63a494d36a1f..afe4e7722d4c 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -383,7 +383,23 @@ config NULL_TTY
 	  available or desired.
 
 	  In order to use this driver, you should redirect the console to this
-	  TTY, or boot the kernel with console=ttynull.
+	  TTY, boot the kernel with console=ttynull, or enable
+	  CONFIG_NULL_TTY_CONSOLE.
+
+	  If unsure, say N.
+
+config NULL_TTY_CONSOLE
+        bool "Supports /dev/ttynull as a console automatically"
+        depends on NULL_TTY=y && !VT_CONSOLE
+	help
+	  Say Y here if you want the NULL TTY to be used as a /dev/console
+	  device.
+
+	  This is useful for userspace applications that expect a working
+	  console device, without changing the kernel boot options, such as a
+	  distribuition or environment that historically had CONFIG_VT_CONSOLE
+	  enabled, and have now disabled it, but still need /dev/console to be
+	  working for userspace applications.
 
 	  If unsure, say N.
 
diff --git a/drivers/tty/ttynull.c b/drivers/tty/ttynull.c
index 6b2f7208b564..8ba629ae426b 100644
--- a/drivers/tty/ttynull.c
+++ b/drivers/tty/ttynull.c
@@ -57,6 +57,10 @@ static struct tty_driver *ttynull_device(struct console *c, int *index)
 static struct console ttynull_console = {
 	.name = "ttynull",
 	.device = ttynull_device,
+#ifdef CONFIG_NULL_TTY_CONSOLE
+	.index = -1,
+	.flags = CON_PRINTBUFFER,
+#endif
 };
 
 static int __init ttynull_init(void)
@@ -90,10 +94,20 @@ static int __init ttynull_init(void)
 	}
 
 	ttynull_driver = driver;
-	register_console(&ttynull_console);
+	if (!console_is_registered(&ttynull_console))
+		register_console(&ttynull_console);
+
+	return 0;
+}
 
+#ifdef CONFIG_NULL_TTY_CONSOLE
+static int __init ttynull_register(void)
+{
+	register_console(&ttynull_console);
 	return 0;
 }
+console_initcall(ttynull_register);
+#endif
 
 static void __exit ttynull_exit(void)
 {
-- 
2.45.2

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[Greg Kroah-Hartman]

On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> initialized by console_initcall() and selected as a possible console
> device.
> Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>

Meta-comments, we need a blank line before the s-o-b line, AND we need a
real name here, sorry.  I can't do anything with these (including
reviewing them), until that happens.

thanks,

greg k-h

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[Greg Kroah-Hartman]

On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > initialized by console_initcall() and selected as a possible console
> > > device.
> > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > 
> > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > real name here, sorry.  I can't do anything with these (including
> > reviewing them), until that happens.
> > 
> Oh, I thought that I didn't need a real name
> 
> I found a recent thread that seems like it suggests that I thought
> https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> https://drewdevault.com/2023/10/31/On-real-names.html[2]
> Or do I need to wait for that change to the guideline be merged?

That change has been merged a long time ago, but as far as I can tell,
this signed-off-by you used here does not meet this category.

thanks,

greg k-h

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[n3rdopolis]

On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > initialized by console_initcall() and selected as a possible console
> > > > device.
> > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > 
> > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > real name here, sorry.  I can't do anything with these (including
> > > reviewing them), until that happens.
> > > 
> > Oh, I thought that I didn't need a real name
> > 
> > I found a recent thread that seems like it suggests that I thought
> > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > Or do I need to wait for that change to the guideline be merged?
> 
> That change has been merged a long time ago, but as far as I can tell,
> this signed-off-by you used here does not meet this category.
> 
Oh, what would it take to meet that category? I've been using this nick to
contribute to other projects, and it matches my GitHub name, and FreeDesktop
GitLab name

Thanks
> thanks,
> 
> greg k-h
> 

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[n3rdopolis]

On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > initialized by console_initcall() and selected as a possible console
> > > > > device.
> > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > 
> > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > real name here, sorry.  I can't do anything with these (including
> > > > reviewing them), until that happens.
> > > > 
> > > Oh, I thought that I didn't need a real name
> > > 
> > > I found a recent thread that seems like it suggests that I thought
> > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > Or do I need to wait for that change to the guideline be merged?
> > 
> > That change has been merged a long time ago, but as far as I can tell,
> > this signed-off-by you used here does not meet this category.
> > 
> Oh, what would it take to meet that category? I've been using this nick to
> contribute to other projects, and it matches my GitHub name, and FreeDesktop
> GitLab name
> 
What if I made the signed-off-by (and committer name) this email address? would
that work?
> Thanks
> > thanks,
> > 
> > greg k-h
> > 
> 
> 

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[Greg Kroah-Hartman]

On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > device.
> > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > 
> > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > real name here, sorry.  I can't do anything with these (including
> > > > > reviewing them), until that happens.
> > > > > 
> > > > Oh, I thought that I didn't need a real name
> > > > 
> > > > I found a recent thread that seems like it suggests that I thought
> > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > Or do I need to wait for that change to the guideline be merged?
> > > 
> > > That change has been merged a long time ago, but as far as I can tell,
> > > this signed-off-by you used here does not meet this category.
> > > 
> > Oh, what would it take to meet that category? I've been using this nick to
> > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > GitLab name
> > 
> What if I made the signed-off-by (and committer name) this email address? would
> that work?

Do you sign documents with your bank with an email address in the line
that says "name"?

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[nerdopolis]

On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > device.
> > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > 
> > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > reviewing them), until that happens.
> > > > > > 
> > > > > Oh, I thought that I didn't need a real name
> > > > > 
> > > > > I found a recent thread that seems like it suggests that I thought
> > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > Or do I need to wait for that change to the guideline be merged?
> > > > 
> > > > That change has been merged a long time ago, but as far as I can tell,
> > > > this signed-off-by you used here does not meet this category.
> > > > 
> > > Oh, what would it take to meet that category? I've been using this nick to
> > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > GitLab name
> > > 
> > What if I made the signed-off-by (and committer name) this email address? would
> > that work?
> 
> Do you sign documents with your bank with an email address in the line
> that says "name"?
> 
No, I guess not, the no pseudonym requirement was dropped, but if my nickname
doesn't work If I really have to, can it just be my first name, instead of my
full name if it comes down to it?

Thanks

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[Greg Kroah-Hartman]

On Sun, Dec 08, 2024 at 12:25:12AM -0500, nerdopolis wrote:
> On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> > On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > > device.
> > > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > > 
> > > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > > reviewing them), until that happens.
> > > > > > > 
> > > > > > Oh, I thought that I didn't need a real name
> > > > > > 
> > > > > > I found a recent thread that seems like it suggests that I thought
> > > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > > Or do I need to wait for that change to the guideline be merged?
> > > > > 
> > > > > That change has been merged a long time ago, but as far as I can tell,
> > > > > this signed-off-by you used here does not meet this category.
> > > > > 
> > > > Oh, what would it take to meet that category? I've been using this nick to
> > > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > > GitLab name
> > > > 
> > > What if I made the signed-off-by (and committer name) this email address? would
> > > that work?
> > 
> > Do you sign documents with your bank with an email address in the line
> > that says "name"?
> > 
> No, I guess not, the no pseudonym requirement was dropped, but if my nickname
> doesn't work If I really have to, can it just be my first name, instead of my
> full name if it comes down to it?

No.

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[n3rdopolis]

On Sunday, December 8, 2024 8:30:08 AM EST Greg Kroah-Hartman wrote:
> On Sun, Dec 08, 2024 at 12:25:12AM -0500, nerdopolis wrote:
> > On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> > > On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > > > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > > > device.
> > > > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > > > 
> > > > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > > > reviewing them), until that happens.
> > > > > > > > 
> > > > > > > Oh, I thought that I didn't need a real name
> > > > > > > 
> > > > > > > I found a recent thread that seems like it suggests that I thought
> > > > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > > > Or do I need to wait for that change to the guideline be merged?
> > > > > > 
> > > > > > That change has been merged a long time ago, but as far as I can tell,
> > > > > > this signed-off-by you used here does not meet this category.
> > > > > > 
> > > > > Oh, what would it take to meet that category? I've been using this nick to
> > > > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > > > GitLab name
> > > > > 
> > > > What if I made the signed-off-by (and committer name) this email address? would
> > > > that work?
> > > 
> > > Do you sign documents with your bank with an email address in the line
> > > that says "name"?
> > > 
> > No, I guess not, the no pseudonym requirement was dropped, but if my nickname
> > doesn't work If I really have to, can it just be my first name, instead of my
> > full name if it comes down to it?
> 
> No.
> 

Can I do first name, last initial? Or does it have to be a full name?

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[Greg Kroah-Hartman]

On Sun, Dec 08, 2024 at 09:16:28PM -0500, n3rdopolis wrote:
> On Sunday, December 8, 2024 8:30:08 AM EST Greg Kroah-Hartman wrote:
> > On Sun, Dec 08, 2024 at 12:25:12AM -0500, nerdopolis wrote:
> > > On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> > > > On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > > > > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > > > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > > > > device.
> > > > > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > > > > 
> > > > > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > > > > reviewing them), until that happens.
> > > > > > > > > 
> > > > > > > > Oh, I thought that I didn't need a real name
> > > > > > > > 
> > > > > > > > I found a recent thread that seems like it suggests that I thought
> > > > > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > > > > Or do I need to wait for that change to the guideline be merged?
> > > > > > > 
> > > > > > > That change has been merged a long time ago, but as far as I can tell,
> > > > > > > this signed-off-by you used here does not meet this category.
> > > > > > > 
> > > > > > Oh, what would it take to meet that category? I've been using this nick to
> > > > > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > > > > GitLab name
> > > > > > 
> > > > > What if I made the signed-off-by (and committer name) this email address? would
> > > > > that work?
> > > > 
> > > > Do you sign documents with your bank with an email address in the line
> > > > that says "name"?
> > > > 
> > > No, I guess not, the no pseudonym requirement was dropped, but if my nickname
> > > doesn't work If I really have to, can it just be my first name, instead of my
> > > full name if it comes down to it?
> > 
> > No.
> > 
> 
> Can I do first name, last initial? Or does it have to be a full name?

Honestly, based on this long discussion, I really don't think we can
take any contribution from you without having someone else verify that
the the name you use here is correct.  Please work with the kernel.org
ring-of-trust to get a valid signature added to it and then I'll be glad
to reconsider.

And note, I'm not singling you out at all, we have recently had to do
this for many new contributors.

thanks,

greg k-h

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[nerdopolis]

On Monday, December 9, 2024 1:35:04 AM EST Greg Kroah-Hartman wrote:
> On Sun, Dec 08, 2024 at 09:16:28PM -0500, n3rdopolis wrote:
> > On Sunday, December 8, 2024 8:30:08 AM EST Greg Kroah-Hartman wrote:
> > > On Sun, Dec 08, 2024 at 12:25:12AM -0500, nerdopolis wrote:
> > > > On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> > > > > On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > > > > > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > > > > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > > > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > > > > > device.
> > > > > > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > > > > > 
> > > > > > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > > > > > reviewing them), until that happens.
> > > > > > > > > > 
> > > > > > > > > Oh, I thought that I didn't need a real name
> > > > > > > > > 
> > > > > > > > > I found a recent thread that seems like it suggests that I thought
> > > > > > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > > > > > Or do I need to wait for that change to the guideline be merged?
> > > > > > > > 
> > > > > > > > That change has been merged a long time ago, but as far as I can tell,
> > > > > > > > this signed-off-by you used here does not meet this category.
> > > > > > > > 
> > > > > > > Oh, what would it take to meet that category? I've been using this nick to
> > > > > > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > > > > > GitLab name
> > > > > > > 
> > > > > > What if I made the signed-off-by (and committer name) this email address? would
> > > > > > that work?
> > > > > 
> > > > > Do you sign documents with your bank with an email address in the line
> > > > > that says "name"?
> > > > > 
> > > > No, I guess not, the no pseudonym requirement was dropped, but if my nickname
> > > > doesn't work If I really have to, can it just be my first name, instead of my
> > > > full name if it comes down to it?
> > > 
> > > No.
> > > 
> > 
> > Can I do first name, last initial? Or does it have to be a full name?
> 
> Honestly, based on this long discussion, I really don't think we can
> take any contribution from you without having someone else verify that
> the the name you use here is correct.  Please work with the kernel.org
> ring-of-trust to get a valid signature added to it and then I'll be glad
> to reconsider.
> 
> And note, I'm not singling you out at all, we have recently had to do
> this for many new contributors.
> 
> thanks,
> 
> greg k-h
> 
Understood, and I am sorry, I am trying to go though kernel.org to see,
do you mean asking helpdesk@kernel.org ? I tried reading the documentation, but
maybe I did not look in the right place

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[Greg Kroah-Hartman]

On Mon, Dec 09, 2024 at 09:56:01PM -0500, nerdopolis wrote:
> On Monday, December 9, 2024 1:35:04 AM EST Greg Kroah-Hartman wrote:
> > On Sun, Dec 08, 2024 at 09:16:28PM -0500, n3rdopolis wrote:
> > > On Sunday, December 8, 2024 8:30:08 AM EST Greg Kroah-Hartman wrote:
> > > > On Sun, Dec 08, 2024 at 12:25:12AM -0500, nerdopolis wrote:
> > > > > On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> > > > > > On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > > > > > > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > > > > > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > > > > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > > > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > > > > > > device.
> > > > > > > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > > > > > > 
> > > > > > > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > > > > > > reviewing them), until that happens.
> > > > > > > > > > > 
> > > > > > > > > > Oh, I thought that I didn't need a real name
> > > > > > > > > > 
> > > > > > > > > > I found a recent thread that seems like it suggests that I thought
> > > > > > > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > > > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > > > > > > Or do I need to wait for that change to the guideline be merged?
> > > > > > > > > 
> > > > > > > > > That change has been merged a long time ago, but as far as I can tell,
> > > > > > > > > this signed-off-by you used here does not meet this category.
> > > > > > > > > 
> > > > > > > > Oh, what would it take to meet that category? I've been using this nick to
> > > > > > > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > > > > > > GitLab name
> > > > > > > > 
> > > > > > > What if I made the signed-off-by (and committer name) this email address? would
> > > > > > > that work?
> > > > > > 
> > > > > > Do you sign documents with your bank with an email address in the line
> > > > > > that says "name"?
> > > > > > 
> > > > > No, I guess not, the no pseudonym requirement was dropped, but if my nickname
> > > > > doesn't work If I really have to, can it just be my first name, instead of my
> > > > > full name if it comes down to it?
> > > > 
> > > > No.
> > > > 
> > > 
> > > Can I do first name, last initial? Or does it have to be a full name?
> > 
> > Honestly, based on this long discussion, I really don't think we can
> > take any contribution from you without having someone else verify that
> > the the name you use here is correct.  Please work with the kernel.org
> > ring-of-trust to get a valid signature added to it and then I'll be glad
> > to reconsider.
> > 
> > And note, I'm not singling you out at all, we have recently had to do
> > this for many new contributors.
> > 
> > thanks,
> > 
> > greg k-h
> > 
> Understood, and I am sorry, I am trying to go though kernel.org to see,
> do you mean asking helpdesk@kernel.org ? I tried reading the documentation, but
> maybe I did not look in the right place

https://korg.docs.kernel.org/pgpkeys.html should help out

Re: [PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[nerdopolis]

On Tuesday, December 10, 2024 2:28:12 AM EST Greg Kroah-Hartman wrote:
> On Mon, Dec 09, 2024 at 09:56:01PM -0500, nerdopolis wrote:
> > On Monday, December 9, 2024 1:35:04 AM EST Greg Kroah-Hartman wrote:
> > > On Sun, Dec 08, 2024 at 09:16:28PM -0500, n3rdopolis wrote:
> > > > On Sunday, December 8, 2024 8:30:08 AM EST Greg Kroah-Hartman wrote:
> > > > > On Sun, Dec 08, 2024 at 12:25:12AM -0500, nerdopolis wrote:
> > > > > > On Saturday, December 7, 2024 1:50:50 AM EST Greg Kroah-Hartman wrote:
> > > > > > > On Fri, Dec 06, 2024 at 12:36:21PM -0500, n3rdopolis wrote:
> > > > > > > > On Wednesday, December 4, 2024 2:37:55 PM EST n3rdopolis wrote:
> > > > > > > > > On Wednesday, December 4, 2024 1:06:50 PM EST Greg Kroah-Hartman wrote:
> > > > > > > > > > On Wed, Dec 04, 2024 at 12:06:56PM -0500, n3rdopolis wrote:
> > > > > > > > > > > On Wednesday, December 4, 2024 10:41:44 AM EST Greg Kroah-Hartman wrote:
> > > > > > > > > > > > On Thu, Nov 28, 2024 at 11:15:48PM -0500, n3rdopolis wrote:
> > > > > > > > > > > > > Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
> > > > > > > > > > > > > initialized by console_initcall() and selected as a possible console
> > > > > > > > > > > > > device.
> > > > > > > > > > > > > Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
> > > > > > > > > > > > 
> > > > > > > > > > > > Meta-comments, we need a blank line before the s-o-b line, AND we need a
> > > > > > > > > > > > real name here, sorry.  I can't do anything with these (including
> > > > > > > > > > > > reviewing them), until that happens.
> > > > > > > > > > > > 
> > > > > > > > > > > Oh, I thought that I didn't need a real name
> > > > > > > > > > > 
> > > > > > > > > > > I found a recent thread that seems like it suggests that I thought
> > > > > > > > > > > https://lore.kernel.org/all/20241121165806.476008-40-alex.bennee@linaro.org/[1]
> > > > > > > > > > > https://drewdevault.com/2023/10/31/On-real-names.html[2]
> > > > > > > > > > > Or do I need to wait for that change to the guideline be merged?
> > > > > > > > > > 
> > > > > > > > > > That change has been merged a long time ago, but as far as I can tell,
> > > > > > > > > > this signed-off-by you used here does not meet this category.
> > > > > > > > > > 
> > > > > > > > > Oh, what would it take to meet that category? I've been using this nick to
> > > > > > > > > contribute to other projects, and it matches my GitHub name, and FreeDesktop
> > > > > > > > > GitLab name
> > > > > > > > > 
> > > > > > > > What if I made the signed-off-by (and committer name) this email address? would
> > > > > > > > that work?
> > > > > > > 
> > > > > > > Do you sign documents with your bank with an email address in the line
> > > > > > > that says "name"?
> > > > > > > 
> > > > > > No, I guess not, the no pseudonym requirement was dropped, but if my nickname
> > > > > > doesn't work If I really have to, can it just be my first name, instead of my
> > > > > > full name if it comes down to it?
> > > > > 
> > > > > No.
> > > > > 
> > > > 
> > > > Can I do first name, last initial? Or does it have to be a full name?
> > > 
> > > Honestly, based on this long discussion, I really don't think we can
> > > take any contribution from you without having someone else verify that
> > > the the name you use here is correct.  Please work with the kernel.org
> > > ring-of-trust to get a valid signature added to it and then I'll be glad
> > > to reconsider.
> > > 
> > > And note, I'm not singling you out at all, we have recently had to do
> > > this for many new contributors.
> > > 
> > > thanks,
> > > 
> > > greg k-h
> > > 
> > Understood, and I am sorry, I am trying to go though kernel.org to see,
> > do you mean asking helpdesk@kernel.org ? I tried reading the documentation, but
> > maybe I did not look in the right place
> 
> https://korg.docs.kernel.org/pgpkeys.html should help out
> 
OK, do you think it's possible for me to get this in with like a surrogate or
something? It might be quicker for someone to get it for me with more trust. I
guess I will be willing to just be in with written-by or tested-by or something... 

[PATCH 2/2] tty: Change order of ttynull to be loaded sooner.

[n3rdopolis]

If CONFIG_NULL_TTY_CONSOLE is enabled, and CONFIG_VT is disabled, ttynull
will become the default primary console device, based on the load order.
Users and distributions that are migrating away from CONFIG_VT will
benefit from this as /dev/console would not suddenly become /dev/ttyS0
which could otherwise cause some user space behavior changes, namely the
TCGETS ioctl failing, which causes libc's isatty() to incorrectly return
false when /dev/ttyS0 is disabled, and will prevent a device that is
connected to a user's /dev/ttyS0 to suddenly start getting kernel log
messages.
Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
---
 drivers/tty/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 07aca5184a55..03bb47e11e1c 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -11,6 +11,8 @@ obj-$(CONFIG_N_HDLC)		+= n_hdlc.o
 obj-$(CONFIG_N_GSM)		+= n_gsm.o
 
 obj-y				+= vt/
+obj-$(CONFIG_NULL_TTY)		+= ttynull.o
+
 obj-$(CONFIG_HVC_DRIVER)	+= hvc/
 obj-y				+= serial/
 obj-$(CONFIG_SERIAL_DEV_BUS)	+= serdev/
@@ -20,7 +22,6 @@ obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o
 obj-$(CONFIG_MOXA_INTELLIO)	+= moxa.o
 obj-$(CONFIG_MOXA_SMARTIO)	+= mxser.o
 obj-$(CONFIG_NOZOMI)		+= nozomi.o
-obj-$(CONFIG_NULL_TTY)	        += ttynull.o
 obj-$(CONFIG_SYNCLINK_GT)	+= synclink_gt.o
 obj-$(CONFIG_PPC_EPAPR_HV_BYTECHAN) += ehv_bytechan.o
 obj-$(CONFIG_GOLDFISH_TTY)	+= goldfish.o
-- 
2.45.2

[PATCH 0/2] Optionally allow ttynull to be selected as a default console

[adamsimonelli]

From: Adam Simonelli <adamsimonelli@gmail.com>

When switching to a CONFIG_VT=n world, at least on x86 systems,
/dev/console becomes /dev/ttyS0. This can cause some undesired effects.
/dev/console's behavior is now tied to the physical /dev/ttyS0, which when
disconnected can cause isatty() to fail when /dev/ttyS0 is disconnected,
and users who upgrade to a theoretical vt-less kernel from their
distribution who have a device such as a science instrument connected to
their /dev/ttyS0 port will suddenly see it receive kernel log messages.

When the new CONFIG_NULL_TTY_CONSOLE option is turned on, this will allow
the ttynull device to be leveraged as the default console. Distributions
that had CONFIG_VT turned on before will be able to leverage this option
to where /dev/console is still backed by a psuedo device, avoiding these
issues, without needing to enable the entire VT subsystem.

Adam Simonelli (2):
  ttynull: Add an option to allow ttynull to be used as a console device
  tty: Change order of ttynull to be loaded sooner.

 drivers/tty/Kconfig   | 18 +++++++++++++++++-
 drivers/tty/Makefile  |  3 ++-
 drivers/tty/ttynull.c | 16 +++++++++++++++-
 3 files changed, 34 insertions(+), 3 deletions(-)

-- 
2.45.2

[PATCH 1/2] ttynull: Add an option to allow ttynull to be used as a console device

[adamsimonelli]

From: Adam Simonelli <adamsimonelli@gmail.com>

Add a config option CONFIG_NULL_TTY_CONSOLE that will have ttynull be
initialized by console_initcall() and selected as a possible console
device.

Signed-off-by: Adam Simonelli <adamsimonelli@gmail.com>
---
 drivers/tty/Kconfig   | 18 +++++++++++++++++-
 drivers/tty/ttynull.c | 16 +++++++++++++++-
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 63a494d36a1f..afe4e7722d4c 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -383,7 +383,23 @@ config NULL_TTY
 	  available or desired.
 
 	  In order to use this driver, you should redirect the console to this
-	  TTY, or boot the kernel with console=ttynull.
+	  TTY, boot the kernel with console=ttynull, or enable
+	  CONFIG_NULL_TTY_CONSOLE.
+
+	  If unsure, say N.
+
+config NULL_TTY_CONSOLE
+        bool "Supports /dev/ttynull as a console automatically"
+        depends on NULL_TTY=y && !VT_CONSOLE
+	help
+	  Say Y here if you want the NULL TTY to be used as a /dev/console
+	  device.
+
+	  This is useful for userspace applications that expect a working
+	  console device, without changing the kernel boot options, such as a
+	  distribuition or environment that historically had CONFIG_VT_CONSOLE
+	  enabled, and have now disabled it, but still need /dev/console to be
+	  working for userspace applications.
 
 	  If unsure, say N.
 
diff --git a/drivers/tty/ttynull.c b/drivers/tty/ttynull.c
index 6b2f7208b564..8ba629ae426b 100644
--- a/drivers/tty/ttynull.c
+++ b/drivers/tty/ttynull.c
@@ -57,6 +57,10 @@ static struct tty_driver *ttynull_device(struct console *c, int *index)
 static struct console ttynull_console = {
 	.name = "ttynull",
 	.device = ttynull_device,
+#ifdef CONFIG_NULL_TTY_CONSOLE
+	.index = -1,
+	.flags = CON_PRINTBUFFER,
+#endif
 };
 
 static int __init ttynull_init(void)
@@ -90,10 +94,20 @@ static int __init ttynull_init(void)
 	}
 
 	ttynull_driver = driver;
-	register_console(&ttynull_console);
+	if (!console_is_registered(&ttynull_console))
+		register_console(&ttynull_console);
+
+	return 0;
+}
 
+#ifdef CONFIG_NULL_TTY_CONSOLE
+static int __init ttynull_register(void)
+{
+	register_console(&ttynull_console);
 	return 0;
 }
+console_initcall(ttynull_register);
+#endif
 
 static void __exit ttynull_exit(void)
 {
-- 
2.45.2