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| author |   William Hubbs <williamh@gentoo.org> | 2013-03-21 10:05:15 -0500 |
|---|---|---|
| committer | William Hubbs <williamh@gentoo.org> | 2013-03-21 10:05:15 -0500 |
| commit | ba463c6841c2cd0ab58aac391bd84613694cb7a9 (patch) | |
| tree | 261d6f933cb7057b6c04781f4e9524b93f414227 | |
| parent | re-arrange variable settings (diff) | |
| download | udev-gentoo-scripts-ba463c6841c2cd0ab58aac391bd84613694cb7a9.tar.gz udev-gentoo-scripts-ba463c6841c2cd0ab58aac391bd84613694cb7a9.tar.bz2 udev-gentoo-scripts-ba463c6841c2cd0ab58aac391bd84613694cb7a9.zip | |
Optionally create /dev/root symlink
This is being added because there is software in our tree which hard
codes the reference to /dev/root instead of using stat("/") to retrieve
the root device. It is temporary however and will be removed again once
this software is fixed.
This is based on a patch submitted by Samuli Ssuominen.
X-Gentoo-Bug: 438380
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=438380
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | conf.d/udev | 9 | ||||
| -rw-r--r-- | helpers/dev-root-link.sh | 22 | ||||
| -rw-r--r-- | init.d/udev | 10 |
4 files changed, 42 insertions, 0 deletions
@@ -9,6 +9,7 @@ CONFD ?= $(SYSCONFDIR)/conf.d INITD ?= $(SYSCONFDIR)/init.d HELPERS = \ + helpers/dev-root-link.sh \ helpers/net.sh all: diff --git a/conf.d/udev b/conf.d/udev index 667cc8b..41f6b9b 100644 --- a/conf.d/udev +++ b/conf.d/udev @@ -11,6 +11,15 @@ # in /etc/conf.d/rc: rc_plug_services="!*" #rc_coldplug="YES" +# We can create a /dev/root symbolic link to point to the root device in +# some situations. This is on by default because some software relies on +# it,. However, this software should be fixed to not do this. +# For more information, see +# https://bugs.gentoo.org/show_bug.cgi?id=438380. +# If you are not using any affected software, you do not need this, so +# feel free to turn it off. +#rc_dev_root_symlink="YES" + # Expert options: # Timeout in seconds to wait for processing of uevents at boot. diff --git a/helpers/dev-root-link.sh b/helpers/dev-root-link.sh new file mode 100644 index 0000000..b92c47e --- /dev/null +++ b/helpers/dev-root-link.sh @@ -0,0 +1,22 @@ +#!/bin/sh -e +# +# dev-root-link.sh: create /dev/root symlink +# +# Distributed under the terms of the GNU General Public License v2 +# +# This is here because some software expects /dev/root to exist. +# For more information, see this bug: +# https://bugs.gentoo.org/show_bug.cgi?id=438380 + +RULESDIR=/run/udev/rules.d + +[ -d $RULESDIR ] || mkdir -p $RULESDIR + +eval $(udevadm info --export --export-prefix=ROOT_ --device-id-of-file=/ || true) + +[ "$ROOT_MAJOR" -a "$ROOT_MINOR" ] || exit 0 + +# btrfs filesystems have bogus major/minor numbers +[ "$ROOT_MAJOR" != 0 ] || exit 0 + +echo 'ACTION=="add|change", SUBSYSTEM=="block", ENV{MAJOR}=="'$ROOT_MAJOR'", ENV{MINOR}=="'$ROOT_MINOR'", SYMLINK+="root"' > $RULESDIR/61-dev-root-link.rules diff --git a/init.d/udev b/init.d/udev index a2f0ec1..09b59e9 100644 --- a/init.d/udev +++ b/init.d/udev @@ -95,6 +95,16 @@ start_udevmonitor() populate_dev() { + if yesno ${rc_dev_root_symlink:-yes}; then + einfo "The following is a temporary fix because some software" + einfo "depends on the existence of /dev/root." + einfo "For more information, see the following bug:" + einfo "https://bugs.gentoo.org/show_bug.cgi?id=438380" + ebegin "Generating a rule to create /dev/root symlink" + /lib/udev/dev-root-link.sh + eend $? + fi + get_bootparam "nocoldplug" && rc_coldplug="no" if ! yesno ${rc_coldplug:-${RC_COLDPLUG:-yes}}; then einfo "Setting /dev permissions and symbolic links" |