From 8d66edc4085db428e67223f0f71cde6b3640f27e Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard@openedhand.com>
Date: Tue, 20 Sep 2005 15:19:38 +0000
Subject: pcmciautils and udev updates. Slowly aiming to get rid of hotplug and
 pcmcia-cs

git-svn-id: https://svn.o-hand.com/repos/poky@27 311d38ba-8fff-0310-9ca6-ca027cbcb966
---
 openembedded/packages/udev/files/init              | 234 +++++++++++----------
 openembedded/packages/udev/files/links.conf        |  21 ++
 openembedded/packages/udev/files/local.rules       |   3 +
 openembedded/packages/udev/files/mount.sh          |  25 +++
 .../packages/udev/files/noasmlinkage.patch         |  27 ---
 openembedded/packages/udev/files/permissions.rules |  81 +++++++
 openembedded/packages/udev/files/udev.rules        |  96 +++++++++
 7 files changed, 352 insertions(+), 135 deletions(-)
 create mode 100644 openembedded/packages/udev/files/links.conf
 create mode 100644 openembedded/packages/udev/files/local.rules
 create mode 100644 openembedded/packages/udev/files/mount.sh
 delete mode 100644 openembedded/packages/udev/files/noasmlinkage.patch
 create mode 100644 openembedded/packages/udev/files/permissions.rules
 create mode 100644 openembedded/packages/udev/files/udev.rules

(limited to 'openembedded/packages/udev/files')

diff --git a/openembedded/packages/udev/files/init b/openembedded/packages/udev/files/init
index 16efb3154..c290661c7 100755
--- a/openembedded/packages/udev/files/init
+++ b/openembedded/packages/udev/files/init
@@ -1,36 +1,18 @@
 #!/bin/sh -e
 
-PATH="/usr/sbin:/usr/bin:/sbin:/bin"
-
 UDEVSTART=/sbin/udevstart
 
-# default maximum size of the /dev ramfs
-ramfs_size="1M"
+# defaults
+tmpfs_size="10M"
+udev_root="/dev"
 
 [ -x $UDEVSTART ] || exit 0
 
 . /etc/udev/udev.conf
 
-case "$(uname -r)" in
-  2.[012345].*)
-    echo "udev requires a kernel >= 2.6, not started."
-    exit 0
-    ;;
-esac
-
-if ! grep -q '[[:space:]]ramfs$' /proc/filesystems; then
-    echo "udev requires ramfs support, not started."
-    exit 0
-fi
-
-if [ ! -e /proc/sys/kernel/hotplug ]; then
-    echo "udev requires hotplug support, not started."
-    exit 0
-fi
-
 ##############################################################################
 
-# we need to unmount /dev/pts/ and remount it later over the ramfs
+# we need to unmount /dev/pts/ and remount it later over the tmpfs
 unmount_devpts() {
   if mountpoint -q /dev/pts/; then
     umount -l /dev/pts/
@@ -41,132 +23,169 @@ unmount_devpts() {
   fi
 }
 
-# mount a ramfs over /dev, if somebody did not already do it
-mount_ramfs() {
-  if grep -E -q "^[^[:space:]]+ /dev ramfs" /proc/mounts; then
+# mount a tmpfs over /dev, if somebody did not already do it
+mount_tmpfs() {
+  if grep -E -q "^[^[:space:]]+ /dev tmpfs" /proc/mounts; then
     return 0
   fi
 
-  # /.dev is used by /sbin/MAKEDEV to access the real /dev directory.
-  # if you don't like this, remove /.dev/.
-  [ -d /.dev ] && mount --bind /dev /.dev
+  # /dev/.static/dev/ is used by MAKEDEV to access the real /dev/ directory.
+  # /etc/udev/ is recycled as a temporary mount point because it's the only
+  # directory which is guaranteed to be available.
+  mount -n -o bind /dev /etc/udev
+
+  if ! mount -n -o size=$tmpfs_size,mode=0755 -t tmpfs tmpfs /dev; then
+    umount /etc/udev
+    echo "udev requires tmpfs support, not started."
+    exit 1
+  fi
+
+  # using ln to test if /dev works, because touch is in /usr/bin/
+  if ln -s test /dev/test-file; then
+    rm /dev/test-file
+  else
+    echo "udev requires tmpfs support, not started."
+    umount /etc/udev
+    umount /dev
+    exit 1
+  fi
 
-  echo -n "Mounting a ramfs over /dev..."
-  mount -n -o size=$ramfs_size,mode=0755 -t ramfs none /dev
-  echo "done."
+  mkdir -p /dev/.static/dev
+  chmod 700 /dev/.static/
+  mount -n -o move /etc/udev /dev/.static/dev
 }
 
 # I hate this hack.  -- Md
 make_extra_nodes() {
- if [ -f /etc/udev/links.conf ]; then
+  [ -e /etc/udev/links.conf ] || return 0
   grep '^[^#]' /etc/udev/links.conf | \
   while read type name arg1; do
     [ "$type" -a "$name" -a ! -e "/dev/$name" -a ! -L "/dev/$name" ] ||continue
     case "$type" in
-    L)
-      ln -s $arg1 /dev/$name
-      ;;
-    D)
-      mkdir -p /dev/$name
-      ;;
-    M)
-      mknod -m 600 /dev/$name $arg1
-      ;;
-    *)
-      echo "unparseable line ($type $name $arg1)"
-      ;;
+      L) ln -s $arg1 /dev/$name ;;
+      D) mkdir -p /dev/$name ;;
+      M) mknod -m 600 /dev/$name $arg1 ;;
+      *) echo "links.conf: unparseable line ($type $name $arg1)" ;;
     esac
   done
- fi
+}
+
+# this function is duplicated in preinst, postinst and d-i
+supported_kernel() {
+  case "$(uname -r)" in
+    2.[012345].*|2.6.[0-9]|2.6.[0-9][!0-9]*) return 1 ;;
+    2.6.1[01]|2.6.1[01][!0-9]*) return 1 ;;
+  esac
+  return 0
+}
+
+# shell version of /usr/bin/tty
+my_tty() {
+  [ -x /bin/readlink ] || return 0
+  [ -e /proc/self/fd/0 ] || return 0
+  readlink --silent /proc/self/fd/0 || true
+}
+
+warn_if_interactive() {
+  if [ "$RUNLEVEL" = "S" -a "$PREVLEVEL" = "N" ]; then
+    return 0
+  fi
+
+  TTY=$(my_tty)
+  if [ -z "$TTY" -o "$TTY" = "/dev/console" ]; then
+    return 0
+  fi
+
+  printf "\n\n\nIt has been detected that the command\n\n\t$0 $*\n\n"
+  printf "has been run from an interactive shell.\n"
+  printf "It will probably not do what you expect, so this script will wait\n"
+  printf "60 seconds before continuing. Press ^C to stop it.\n"
+  printf "RUNNING THIS COMMAND IS HIGHLY DISCOURAGED!\n\n\n\n"
+  sleep 60
 }
 
 ##############################################################################
 
-if [ "$udev_root" != "/dev" ]; then
-  echo "WARNING: udev_root != /dev"
+if ! supported_kernel; then
+  echo "udev requires a kernel >= 2.6.12, not started."
+  exit 1
+fi
 
-case "$1" in
-  start)
-    if [ -e "$udev_root/.udev.tdb" ]; then
-      if mountpoint -q /dev/; then
-        echo "FATAL: udev is already active on $udev_root."
-        exit 1
-      else
-        echo "WARNING: .udev.tdb already exists on the old $udev_root!"
-      fi
-    fi
-    mount -n -o size=$ramfs_size,mode=0755 -t ramfs none $udev_root
-    echo -n "Creating initial device nodes..."
-    $UDEVSTART
-    echo "done."
-    ;;
-  stop)
-    start-stop-daemon -K -x /sbin/udevd 
-    echo -n "Unmounting $udev_root..."
-    # unmounting with -l should never fail
-    if umount -l $udev_root; then
-      echo "done."
-    else
-      echo "failed."
-    fi
-    ;;
-  restart|force-reload)
-    $0 stop
-    $0 start
-    ;;
-  *)
-    echo "Usage: /etc/init.d/udev {start|stop|restart|force-reload}"
-    exit 1
-    ;;
-esac
+if [ ! -e /proc/filesystems ]; then
+  echo "udev requires a mounted procfs, not started."
+  exit 1
+fi
+
+if ! grep -q '[[:space:]]tmpfs$' /proc/filesystems; then
+  echo "udev requires tmpfs support, not started."
+  exit 1
+fi
 
-  exit 0
-fi # udev_root != /dev/
+if [ ! -d /sys/class/ ]; then
+  echo "udev requires a mounted sysfs, not started."
+  exit 1
+fi
+
+if [ ! -e /proc/sys/kernel/hotplug ]; then
+  echo "udev requires hotplug support, not started."
+  exit 1
+fi
 
 ##############################################################################
+
 # When modifying this script, do not forget that between the time that
 # the new /dev has been mounted and udevstart has been run there will be
 # no /dev/null. This also means that you cannot use the "&" shell command.
 
 case "$1" in
   start)
-    if [ -e "$udev_root/.udev.tdb" ]; then
+    if [ -e "$udev_root/.udevdb" ]; then
       if mountpoint -q /dev/; then
-        echo "FATAL: udev is already active on $udev_root."
-        exit 1
+        TMPFS_MOUNTED=1
       else
-        echo "WARNING: .udev.tdb already exists on the old $udev_root!"
+        echo ".udevdb already exists on the old $udev_root!"
       fi
     fi
-    unmount_devpts
-    mount_ramfs
-    ACTION=add
-    echo -n "Creating initial device nodes..."
-    $UDEVSTART
+    warn_if_interactive
+
+    #echo /sbin/udevsend > /proc/sys/kernel/hotplug
+    echo "" > /proc/sys/kernel/hotplug
+    udevsend
+    if [ "$UDEV_DISABLED" = "yes" ]; then
+      echo "udev disabled on the kernel command line, not started."
+      exit 0
+    fi
+
+    if [ ! "$TMPFS_MOUNTED" ]; then
+      unmount_devpts
+      mount_tmpfs
+      [ -d /proc/1 ] || mount -n /proc
+      # if this directory is not present /dev will not be updated by udev
+      mkdir /dev/.udevdb/
+      echo "Creating initial device nodes..."
+      udevstart
+    fi
     make_extra_nodes
-    echo "done."
-#    /etc/init.d/mountvirtfs start
     ;;
   stop)
-    start-stop-daemon -K -x /sbin/udevd 
+    warn_if_interactive
+    start-stop-daemon --stop --exec /sbin/udevd --quiet
     unmount_devpts
-    echo -n "Unmounting /dev..."
+    if [ -d /dev/.static/dev/ ]; then
+      umount -l /dev/.static/dev/ || true
+    fi
+    echo "Unmounting /dev..."
     # unmounting with -l should never fail
-    if umount -l /dev; then
-      echo "done."
-      umount -l /.dev || true
-#      /etc/init.d/mountvirtfs start
-    else
-      echo "failed."
+    if ! umount -l /dev; then
+      exit 1
     fi
     ;;
   restart|force-reload)
-    start-stop-daemon -K -x /sbin/udevd 
-    echo -n "Recreating device nodes..."
-    ACTION=add
-    $UDEVSTART
+    start-stop-daemon --stop --exec /sbin/udevd --quiet
+    log_begin_msg "Recreating device nodes..."
+    udevstart
     make_extra_nodes
-    echo "done."
+    log_end_msg 0
     ;;
   *)
     echo "Usage: /etc/init.d/udev {start|stop|restart|force-reload}"
@@ -175,4 +194,3 @@ case "$1" in
 esac
 
 exit 0
-
diff --git a/openembedded/packages/udev/files/links.conf b/openembedded/packages/udev/files/links.conf
new file mode 100644
index 000000000..8fff922db
--- /dev/null
+++ b/openembedded/packages/udev/files/links.conf
@@ -0,0 +1,21 @@
+# This file does not exist. Please do not ask the debian maintainer about it.
+# You may use it to do strange and wonderful things, at your risk.
+
+L fd		/proc/self/fd
+L stdin		/proc/self/fd/0
+L stdout	/proc/self/fd/1
+L stderr	/proc/self/fd/2
+L core		/proc/kcore
+L sndstat	/proc/asound/oss/sndstat
+L MAKEDEV	/sbin/MAKEDEV
+
+D pts
+D shm
+
+# Hic sunt leones.
+M ppp		c 108 0
+D loop
+M loop/0	b 7 0
+D net
+M net/tun	c 10 200
+
diff --git a/openembedded/packages/udev/files/local.rules b/openembedded/packages/udev/files/local.rules
new file mode 100644
index 000000000..95b3e1083
--- /dev/null
+++ b/openembedded/packages/udev/files/local.rules
@@ -0,0 +1,3 @@
+SUBSYSTEM=="block", ACTION=="add"    RUN+="/etc/udev/scripts/mount.sh"
+SUBSYSTEM=="block", ACTION=="remove" RUN+="/etc/udev/scripts/mount.sh"
+
diff --git a/openembedded/packages/udev/files/mount.sh b/openembedded/packages/udev/files/mount.sh
new file mode 100644
index 000000000..7e641b08d
--- /dev/null
+++ b/openembedded/packages/udev/files/mount.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Called from udev
+# Attemp to mount any added block devices 
+# and remove any removed devices
+#
+
+MOUNT="/bin/mount"
+PMOUNT="/usr/bin/pmount"
+UMOUNT="/bin/umount"
+
+if [ "$ACTION" = "add" ] && [ -n "$DEVNAME" ]; then
+	if [ -x "$PMOUNT" ]; then
+		$PMOUNT $DEVNAME 2> /dev/null
+	elif [ -x $MOUNT ]; then
+    		$MOUNT $DEVNAME 2> /dev/null
+	fi
+fi
+
+if [ "$ACTION" = "remove" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
+	for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d " " `
+	do
+		$UMOUNT $mnt
+	done
+fi
diff --git a/openembedded/packages/udev/files/noasmlinkage.patch b/openembedded/packages/udev/files/noasmlinkage.patch
deleted file mode 100644
index 1694d4d66..000000000
--- a/openembedded/packages/udev/files/noasmlinkage.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-
-#
-# Patch managed by http://www.holgerschurig.de/patcher.html
-#
-
---- udev-042/udev.c~noasmlinkage
-+++ udev-042/udev.c
-@@ -60,7 +60,7 @@
- }
- #endif
- 
--static void asmlinkage sig_handler(int signum)
-+static void sig_handler(int signum)
- {
- 	switch (signum) {
- 		case SIGALRM:
---- udev-042/udevd.c~noasmlinkage
-+++ udev-042/udevd.c
-@@ -308,7 +308,7 @@
- 	return;
- }
- 
--static void asmlinkage sig_handler(int signum)
-+static void sig_handler(int signum)
- {
- 	int rc;
- 
diff --git a/openembedded/packages/udev/files/permissions.rules b/openembedded/packages/udev/files/permissions.rules
new file mode 100644
index 000000000..86d771276
--- /dev/null
+++ b/openembedded/packages/udev/files/permissions.rules
@@ -0,0 +1,81 @@
+# default permissions for block devices
+SUBSYSTEM=="block",				GROUP="disk"
+SUBSYSTEM=="block", SYSFS{removable}=="1",	GROUP="floppy"
+
+# IDE devices
+BUS=="ide", KERNEL=="hd[a-z]", SYSFS{removable}="1", \
+  PROGRAM="/bin/cat /proc/ide/%k/media", RESULT=="cdrom*",	GROUP="cdrom"
+BUS=="ide", KERNEL=="ht[0-9]*",					GROUP="tape"
+BUS=="ide", KERNEL=="nht[0-9]*",				GROUP="tape"
+
+# SCSI devices
+BUS=="scsi", SYSFS{type}=="1",	GROUP="tape"
+BUS=="scsi", SYSFS{type}=="5",	GROUP="cdrom"
+BUS=="scsi", SYSFS{type}=="6",	GROUP="scanner"
+
+# USB devices
+BUS=="usb", KERNEL=="legousbtower*", MODE="0666"
+BUS=="usb", KERNEL=="lp[0-9]*", GROUP="lp"
+
+# serial devices
+SUBSYSTEM=="tty",	GROUP="dialout"
+SUBSYSTEM=="capi",	GROUP="dialout"
+SUBSYSTEM=="slamr",	GROUP="dialout"
+
+# vc devices (all members of the tty subsystem)
+KERNEL=="ptmx",		MODE="0666", GROUP="root"
+KERNEL=="console",	MODE="0600", GROUP="root"
+KERNEL=="tty",		MODE="0666", GROUP="root"
+KERNEL=="tty[0-9]*",	GROUP="root"
+KERNEL=="pty*",		MODE="0666", GROUP="tty"
+
+# video devices
+SUBSYSTEM=="video4linux", GROUP="video"
+SUBSYSTEM=="drm",	GROUP="video"
+SUBSYSTEM=="dvb",	GROUP="video"
+SUBSYSTEM=="em8300",	GROUP="video"
+SUBSYSTEM=="graphics",	GROUP="video"
+SUBSYSTEM=="nvidia",	GROUP="video"
+
+# misc devices
+KERNEL=="random",	MODE="0666"
+KERNEL=="urandom",	MODE="0444"
+KERNEL=="mem",		MODE="0640", GROUP="kmem"
+KERNEL=="kmem",		MODE="0640", GROUP="kmem"
+KERNEL=="port",		MODE="0640", GROUP="kmem"
+KERNEL=="full",		MODE="0666"
+KERNEL=="null",		MODE="0666"
+KERNEL=="zero",		MODE="0666"
+KERNEL=="inotify",	MODE="0666"
+KERNEL=="sgi_fetchop",	MODE="0666"
+KERNEL=="sonypi",	MODE="0666"
+KERNEL=="agpgart",	GROUP="video"
+KERNEL=="nvram",	GROUP="nvram"
+KERNEL=="rtc",		MODE="0660", GROUP="audio"
+
+KERNEL=="cdemu[0-9]*",	GROUP="cdrom"
+KERNEL=="pktcdvd[0-9]*", GROUP="cdrom"
+KERNEL=="pktcdvd",	MODE="0644"
+
+# printers and parallel devices
+SUBSYSTEM=="printer",	GROUP="lp"
+SUBSYSTEM=="ppdev",	GROUP="lp"
+KERNEL=="pt[0-9]*",	GROUP="tape"
+KERNEL=="pht[0-9]*",	GROUP="tape"
+
+# sound devices
+SUBSYSTEM=="sound",	GROUP="audio"
+
+# ieee1394 devices       
+KERNEL=="raw1394",	GROUP="disk"
+KERNEL=="dv1394*",	GROUP="video"
+KERNEL=="video1394*",	GROUP="video"
+
+# input devices
+KERNEL=="event[0-9]*",	MODE="0664"
+KERNEL=="js[0-9]*",	MODE="0664"
+
+# AOE character devices
+SUBSYSTEM=="aoe",			MODE="0220", GROUP="disk"
+SUBSYSTEM=="aoe", KERNEL=="err",	MODE="0440"
+
diff --git a/openembedded/packages/udev/files/udev.rules b/openembedded/packages/udev/files/udev.rules
new file mode 100644
index 000000000..4fc82ba25
--- /dev/null
+++ b/openembedded/packages/udev/files/udev.rules
@@ -0,0 +1,96 @@
+# There are a number of modifiers that are allowed to be used in some
+# of the different fields. They provide the following subsitutions:
+#
+# %n the "kernel number" of the device.
+#    For example, 'sda3' has a "kernel number" of '3'
+# %e the smallest number for that name which does not matches an existing node
+# %k the kernel name for the device
+# %M the kernel major number for the device
+# %m the kernel minor number for the device
+# %b the bus id for the device
+# %c the string returned by the PROGRAM
+# %s{filename} the content of a sysfs attribute
+# %% the '%' char itself
+#
+
+# SCSI devices
+BUS=="scsi", KERNEL=="sr[0-9]*",	NAME="scd%n", SYMLINK+="sr%n"
+
+# USB devices
+BUS=="usb", KERNEL=="auer[0-9]*",	NAME="usb/%k"
+BUS=="usb", KERNEL=="cpad[0-9]*",	NAME="usb/%k"
+BUS=="usb", KERNEL=="dabusb*",		NAME="usb/%k"
+BUS=="usb", KERNEL=="hiddev*",		NAME="usb/%k"
+BUS=="usb", KERNEL=="legousbtower*",	NAME="usb/%k"
+BUS=="usb", KERNEL=="lp[0-9]*",		NAME="usb/%k"
+BUS=="usb", KERNEL=="ttyUSB*", SYSFS{product}=="Palm Handheld*", \
+					SYMLINK+="pilot"
+
+# usbfs-like devices
+SUBSYSTEM=="usb_device", \
+	PROGRAM="/bin/sh -c 'X=%k X=$${X#usbdev} B=$${X%%%%.*} D=$${X#*.}; echo bus/usb/$$B/$$D'", SYMLINK+="%c"
+
+# serial devices
+KERNEL=="capi",			NAME="capi20", SYMLINK+="isdn/capi20"
+KERNEL=="capi[0-9]*",		NAME="capi/%n"
+
+# video devices
+KERNEL=="card[0-9]*",		NAME="dri/%k"
+
+# misc devices
+KERNEL=="hw_random",		NAME="hwrng"
+KERNEL=="tun",			NAME="net/%k"
+
+KERNEL=="cdemu[0-9]*",		NAME="cdemu/%n"
+KERNEL=="pktcdvd[0-9]*",	NAME="pktcdvd/%n"
+KERNEL=="pktcdvd",		NAME="pktcdvd/control"
+
+KERNEL=="cpu[0-9]*",		NAME="cpu/%n/cpuid"
+KERNEL=="msr[0-9]*",		NAME="cpu/%n/msr"
+KERNEL=="microcode",		NAME="cpu/microcode"
+
+KERNEL=="umad*",		NAME="infiniband/%k"
+KERNEL=="issm*",		NAME="infiniband/%k"
+KERNEL=="uverbs*",		NAME="infiniband/%k"
+KERNEL=="ucm",			NAME="infiniband/%k"
+
+# ALSA devices
+KERNEL=="controlC[0-9]*",	NAME="snd/%k"
+KERNEL=="hwC[D0-9]*",		NAME="snd/%k"
+KERNEL=="pcmC[D0-9cp]*",	NAME="snd/%k"
+KERNEL=="midiC[D0-9]*",		NAME="snd/%k"
+KERNEL=="timer",		NAME="snd/%k"
+KERNEL=="seq",			NAME="snd/%k"
+
+# ieee1394 devices       
+KERNEL=="dv1394*",		NAME="dv1394/%n"
+KERNEL=="video1394*",		NAME="video1394/%n"
+
+# input devices
+KERNEL=="mice",			NAME="input/%k"
+KERNEL=="mouse[0-9]*",		NAME="input/%k"
+KERNEL=="event[0-9]*",		NAME="input/%k"
+KERNEL=="js[0-9]*",		NAME="input/%k"
+KERNEL=="ts[0-9]*",		NAME="input/%k"
+KERNEL=="uinput",		NAME="input/%k"
+
+# Zaptel
+KERNEL=="zapctl",		NAME="zap/ctl"
+KERNEL=="zaptimer",		NAME="zap/timer"
+KERNEL=="zapchannel",		NAME="zap/channel"
+KERNEL=="zappseudo",		NAME="zap/pseudo"
+KERNEL=="zap[0-9]*",		NAME="zap/%n"
+
+# AOE character devices
+SUBSYSTEM=="aoe", KERNEL=="discover",	NAME="etherd/%k"
+SUBSYSTEM=="aoe", KERNEL=="err",	NAME="etherd/%k"
+SUBSYSTEM=="aoe", KERNEL=="interfaces",	NAME="etherd/%k"
+
+# device mapper creates its own device nodes, so ignore these
+KERNEL=="dm-[0-9]*",		OPTIONS+="ignore_device"
+KERNEL=="device-mapper",	NAME="mapper/control"
+
+KERNEL="rfcomm[0-9]*", NAME="%k", GROUP="users", MODE="0660"
+
+# Firmware Helper
+ACTION=="add", SUBSYSTEM=="firmware", RUN+="/sbin/firmware_helper"
-- 
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