allmodconfig: udev won`t start due to CONFIG_UNIX=m

allmodconfig: udev won`t start due to CONFIG_UNIX=m

[devzero]

Hi !

i build a kernel with allmodconfig and didn`t get my system to boot with that.

after some investigation i found that it was due to udev:

udevd[1226]: init_udev_socket: error getting socket: Address family not supported by protocol 

this was missing support UNIX DOMAIN SOCKETS at boot time.
easy - so i added unix.ko to my initrd.

but that didn`t make a difference. Still same error with udev.

seems, there are others who stepped into this trap and someone telling, unix domain sockets cannot be modular
https://forums.gentoo.org/viewtopic-t-476363-highlight-.html
https://forums.gentoo.org/viewtopic-t-463793-highlight-.html


since we have 1206 options set to "Y" anyway, would it make sense to remove module support for Unix Domain Sockets ?
opensuse103:/home/kernel/linux-2.6.23 # cat .config.allmodconfig |grep "=y" |wc -l
1206
opensuse103:/home/kernel/linux-2.6.23 # cat .config.allmodconfig |grep "=m" |wc -l
2098

i also came across this one:

http://readlist.com/lists/vger.kernel.org/linux-kernel/41/205717.html






______________________________________________________________________
XXL-Speicher, PC-Virenschutz, Spartarife & mehr: Nur im WEB.DE Club!		
Jetzt testen! http://produkte.web.de/club/?mc=021130

Re: allmodconfig: udev won`t start due to CONFIG_UNIX=m

[Jan Engelhardt]

On Dec 30 2007 21:11, devzero@web.de wrote:
>
>i build a kernel with allmodconfig and didn`t get my system to boot with that.
>
>after some investigation i found that it was due to udev:
>
>udevd[1226]: init_udev_socket: error getting socket: Address family not supported by protocol 
>
>this was missing support UNIX DOMAIN SOCKETS at boot time.
>easy - so i added unix.ko to my initrd.
>
>but that didn`t make a difference. Still same error with udev.
>
>seems, there are others who stepped into this trap and someone telling, unix domain sockets cannot be modular
>https://forums.gentoo.org/viewtopic-t-476363-highlight-.html
>https://forums.gentoo.org/viewtopic-t-463793-highlight-.html
>
>
>since we have 1206 options set to "Y" anyway, would it make sense to remove module support for Unix Domain Sockets ?
>opensuse103:/home/kernel/linux-2.6.23 # cat .config.allmodconfig |grep "=y" |wc -l
>1206
>opensuse103:/home/kernel/linux-2.6.23 # cat .config.allmodconfig |grep "=m" |wc -l
>2098
>
>i also came across this one:
>
>http://readlist.com/lists/vger.kernel.org/linux-kernel/41/205717.html
>

I'd rather much do in the Kconfig:

config UNIX
	tristate "UNIX domain sockets" if I_KNOW_WHAT_I_AM_DOING # currently called CONFIG_EMBEDDED
	bool "UNIX domain sockets"

Re: allmodconfig: udev won`t start due to CONFIG_UNIX=m

[Adrian Bunk]

On Sun, Dec 30, 2007 at 09:18:38PM +0100, Jan Engelhardt wrote:
> 
> On Dec 30 2007 21:11, devzero@web.de wrote:
> >
> >i build a kernel with allmodconfig and didn`t get my system to boot with that.
> >
> >after some investigation i found that it was due to udev:
> >
> >udevd[1226]: init_udev_socket: error getting socket: Address family not supported by protocol 
> >
> >this was missing support UNIX DOMAIN SOCKETS at boot time.
> >easy - so i added unix.ko to my initrd.
> >
> >but that didn`t make a difference. Still same error with udev.
> >
> >seems, there are others who stepped into this trap and someone telling, unix domain sockets cannot be modular
> >https://forums.gentoo.org/viewtopic-t-476363-highlight-.html
> >https://forums.gentoo.org/viewtopic-t-463793-highlight-.html
> >
> >
> >since we have 1206 options set to "Y" anyway, would it make sense to remove module support for Unix Domain Sockets ?
> >opensuse103:/home/kernel/linux-2.6.23 # cat .config.allmodconfig |grep "=y" |wc -l
> >1206
> >opensuse103:/home/kernel/linux-2.6.23 # cat .config.allmodconfig |grep "=m" |wc -l
> >2098
> >
> >i also came across this one:
> >
> >http://readlist.com/lists/vger.kernel.org/linux-kernel/41/205717.html
> >
> 
> I'd rather much do in the Kconfig:
> 
> config UNIX
> 	tristate "UNIX domain sockets" if I_KNOW_WHAT_I_AM_DOING # currently called CONFIG_EMBEDDED
> 	bool "UNIX domain sockets"

CONFIG_EMBEDDED is _not_ a generic "advanced user" option, it's only for 
options that allow additional space savings.

What you could actually do would be

config UNIX
	bool "Unix domain sockets" if EMBEDDED
	default y

since as the help text already says everything other than Y is expected 
to cause problems - and if people know they are in a space limited 
environment and really don't need it they'll still be able to disable it.

As a bonus, making it a bool would allow to make the kernel image 
slightly smaller for everyone.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed