At Thu, 14 Nov 2013 13:24:49 +0000, Ivailo Monev wrote:
On 11/14/13 09:42, Takashi Iwai wrote:
At Thu, 14 Nov 2013 12:08:47 +0000, Ivailo Monev wrote:
On 11/14/13 02:48, David Henningsson wrote:
On 11/13/2013 09:36 PM, Ivailo wrote:
Hello,
the default prefix for alsa-utils is /usr however the udev rules directory is /lib/udev/rules.d thus on setups with separate partition for /usr the binaries, from /usr/bin and /usr/sbin, will likely not be available during the boot process and the udev rule will fail to restore the state.
I suggest that the udev rules directory follows the prefix or append /usr to it to resolve this.
Cheers!
Hi,
ALSA merely follows what udev dictates, so I think your question/suggestion is better redirected on the udev (now systemd) mailinglist. Or potentially that of your distro.
Actually, you are not following what udev dictates (unless I'm missing something). By default, systemd (and more importantly udev) will be installed with /usr prefix (which is wrong in it self because it blindly assumes that /usr has been mounted via initrd/initramfs where separate /usr partition is in use but let's not talk about this here).
On 11/14/13 06:45, Takashi Iwai wrote:
At Wed, 13 Nov 2013 20:36:48 +0000, Ivailo wrote:
Hello,
the default prefix for alsa-utils is /usr however the udev rules directory is /lib/udev/rules.d thus on setups with separate partition for /usr the binaries, from /usr/bin and /usr/sbin, will likely not be available during the boot process and the udev rule will fail to restore the state.
Not true. /lib must be always present at boot even if /usr isn't mounted. That's the reason why /lib/udev was chosen as default in the past.
Takashi
You got me wrong, I know that /lib should be available on early boot (unless it's a symlink, like in Arch Linux) but the point is that since the alsa-utils binaries are installed in /usr so should be the udev rules otherwise during boot without /usr being mounted you will see error message about /usr/sbin/alsactl.
Theoretically yes, but this has been rather less problems than creating a non-existing /usr/lib/udev in the past. That's the very reason of hard-coded /lib/udev. Changing the default behavior is often worse unless you really do it carefully with consideration of compatibility with old systems.
So, if you want to change the default, don't hard code again. Make configure to guess the right place. A patch achieving it is welcome.
Takashi
Ok, here is the patch:
From 74faeceb26c4730d6150e726792f6eb1f257b03e Mon Sep 17 00:00:00 2001 From: Ivailo Monev xakepa10@gmail.com Date: Thu, 14 Nov 2013 13:13:43 +0000 Subject: [PATCH 1/1] detect udevdir via pkg-config
configure.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/configure.in b/configure.in index 3ae3209..74b891e 100644 --- a/configure.in +++ b/configure.in @@ -121,7 +121,7 @@ AM_CONDITIONAL(USE_XMLTO, test x"$xmlto" = xyes) AC_ARG_WITH( [udev-rules-dir], AS_HELP_STRING([--with-udev-rules-dir],[Directory where to install udev rules to (defaults to /lib/udev/rules.d)]),
[udevrulesdir=$withval], [udevrulesdir="/lib/udev/rules.d"])
[udevrulesdir=$withval], [udevrulesdir=$($PKG_CONFIG udev--variable=udevdir)"/rules.d"]) AC_SUBST(udevrulesdir)
This pkg-config option isn't always available. Make sure to have a proper fallback to /lib/udev/rules.d. Also, update the help text, too.
thanks,
Takashi