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authorLuca Ceresoli <luca@lucaceresoli.net>2011-07-11 10:25:51 (GMT)
committer Peter Korsgaard <jacmet@sunsite.dk>2011-07-11 11:41:25 (GMT)
commitfc71f7e6f27829a389dacc38622eb687109133f6 (patch)
tree244006625c1be3cf982d8c27d124b12d0c39aff7
parentbd76bc5f80b963570e8eda92efc961e683264402 (diff)
downloadbuildroot-fc71f7e6f27829a389dacc38622eb687109133f6.tar.gz
buildroot-fc71f7e6f27829a389dacc38622eb687109133f6.tar.bz2
busybox: provide /etc/mdev.conf if mdev is used
Without an mdev.conf file installed, mdev generates some /dev entries in an incorrect or non-standard way. Some examples: 1. /dev/null has permissions 660, but it should be accessible to normal users; 2. alsa devices get created in /dev, not /dev/snd as is more common, and as the default value of BR2_PACKAGE_ALSA_LIB_DEVDIR suggests; 3. event<N> files are created in /dev, not /dev/input. This mdev.conf is a selection from the examples provided in the busybox sources with minor tweaks. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
-rw-r--r--package/busybox/busybox.mk6
-rw-r--r--package/busybox/mdev.conf35
2 files changed, 41 insertions, 0 deletions
diff --git a/package/busybox/busybox.mk b/package/busybox/busybox.mk
index 509c3bb..8998ca0 100644
--- a/package/busybox/busybox.mk
+++ b/package/busybox/busybox.mk
@@ -33,6 +33,11 @@ ifeq ($(BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV),y)
define BUSYBOX_INSTALL_MDEV_SCRIPT
install -m 0755 package/busybox/S10mdev $(TARGET_DIR)/etc/init.d
endef
+define BUSYBOX_INSTALL_MDEV_CONF
+ [ -f $(TARGET_DIR)/etc/mdev.conf ] || \
+ install -D -m 0644 package/busybox/mdev.conf \
+ $(TARGET_DIR)/etc/mdev.conf
+endef
define BUSYBOX_SET_MDEV
$(call KCONFIG_ENABLE_OPT,CONFIG_MDEV,$(BUSYBOX_BUILD_CONFIG))
$(call KCONFIG_ENABLE_OPT,CONFIG_FEATURE_MDEV_CONF,$(BUSYBOX_BUILD_CONFIG))
@@ -159,6 +164,7 @@ define BUSYBOX_INSTALL_TARGET_CMDS
$(TARGET_DIR)/usr/share/udhcpc/default.script; \
fi
$(BUSYBOX_INSTALL_MDEV_SCRIPT)
+ $(BUSYBOX_INSTALL_MDEV_CONF)
$(BUSYBOX_INSTALL_LOGGING_SCRIPT)
endef
diff --git a/package/busybox/mdev.conf b/package/busybox/mdev.conf
new file mode 100644
index 0000000..247c0ed
--- /dev/null
+++ b/package/busybox/mdev.conf
@@ -0,0 +1,35 @@
+# null may already exist; therefore ownership has to be changed with command
+null root:root 666 @chmod 666 $MDEV
+zero root:root 666
+full root:root 666
+random root:root 444
+urandom root:root 444
+hwrandom root:root 444
+grsec root:root 660
+
+kmem root:root 640
+mem root:root 640
+port root:root 640
+# console may already exist; therefore ownership has to be changed with command
+console root:tty 600 @chmod 600 $MDEV
+ptmx root:tty 666
+pty.* root:tty 660
+
+# Typical devices
+tty root:tty 666
+tty[0-9]* root:tty 660
+vcsa*[0-9]* root:tty 660
+ttyS[0-9]* root:root 660
+
+# alsa sound devices
+pcm.* root:audio 660 =snd/
+control.* root:audio 660 =snd/
+midi.* root:audio 660 =snd/
+seq root:audio 660 =snd/
+timer root:audio 660 =snd/
+
+# input stuff
+event[0-9]+ root:root 640 =input/
+mice root:root 640 =input/
+mouse[0-9] root:root 640 =input/
+ts[0-9] root:root 600 =input/