My post will be too much hardcore, I presume (I hope not:)
I developeted a embeded linux distro based in slackware 9 (and another one
based in redhat 8) (it runs using a compact flash 128mb in a IDE Drive)
Now I'm trying to mount a USB Pendrive (modules usb-storage and vfat loaded!)
autofs in redhat8 is working pretty good, but the automount using the
same /etc/auto.master and /etc/auto.misc at the slackware do not keep running
when I type 'ps ax'.
The libs were copied correctly to /usr/lib/autofs/*, and the autofs.o module
is loaded at the startup.
I had made a modified version of rc.autofs (see below) to make it work with
slackware, but even if I type 'automount /mnt file /etc/auto.misc' it stops
running and when I type '/etc/rc.d/rc.autofs status' it shows:
Mount points configured:
------------------------
/usr/sbin/automount /mnt file /etc/auto.misc
Active mount points:
--------------------
#
Some interesting observations about my enviroment:
-The root filesystem is readonly (cramfs!) I boot the system from /boot
(ext2) and /var and /tmp is mounted using /dev/ram0. (/mnt resides at my read-
only root file system)
/etc/fstab:
/dev/hda1 /boot ext2 ro 1 0
/dev/hda2 / cramfs ro 1 0
/dev/hda3 /Data/Files ext3 sync,data=journal 1 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0
As the /etc/mtab is never updated (readonly filesystem) that�s what is
mounted at run-time:
#cat /proc/mounts:
rootfs / rootfs ro 0 0
/dev/root / cramfs ro 0 0
/dev/hda1 /boot ext2 ro 0 0
/dev/hda3 /root/2m2b/Data/Files ext3 rw,sync 0 0
devpts /dev/pts devpts rw 0 0
proc /proc proc rw 0 0
/dev/ram2 /var ext2 rw 0 0
/dev/ram2 /var/tmp/autofs-bind-40e28eec-5c/dir2\040(deleted) ext2 rw 0 0
automount(pid92) /mnt autofs rw 0 0
main part of rc.sysinit:
dd if=/var.fs of=/dev/ram2
mount -n /dev/ram2 /var
(tmp is linked to /var/tmp)
/etc/rc.d/rc.autofs start
/etc/auto.master:
/mnt /etc/auto.misc
/etc/auto.misc:
usb -fstype=vfat,sync,nodev,nosuid :/dev/sda1
/etc/rc.d/rc.autofs:
#!/bin/bash
#
# $Id: rc.autofs.in,v 1.11 2004/04/03 07:14:33 raven Exp $
#
# rc file for automount using a Sun-style "master map".
# We first look for a local /etc/auto.master, then a YP
# map with that name
#
# On most distributions, this file should be called:
# /etc/rc.d/init.d/autofs or /etc/init.d/autofs
#
# For Redhat-ish systems
#
# chkconfig: 345 28 72
# processname: /usr/sbin/automount
# config: /etc/auto.master
# description: Automounts filesystems on demand
# This is used in the Debian distribution to determine the proper
# location for the S- and K-links to this init file.
# The following value is extracted by debstd to figure out how to
# generate the postinst script. Edit the field to change the way the
# script is registered through update-rc.d (see the manpage for
# update-rc.d!)
#
FLAGS="defaults 21"
#
# Location of the automount daemon and the init directory
#
DAEMON=/usr/sbin/automount
prog=`basename $DAEMON`
initdir=/etc/init.d
#
# Determine which kind of configuration we're using
#
system=unknown
if [ -f /etc/slackware-version ]; then
system=slackware
elif [ -f /etc/redhat-release ]; then
system=redhat
else
echo "$0: Unknown system, please port and contact
[EMAIL PROTECTED]" 1>&2
exit 1
fi
if [ $system = redhat ]; then
. $initdir/functions
fi
test -e $DAEMON || exit 0
if [ $system = slackware ]; then
thisscript="$0"
if [ ! -f "$thisscript" ]; then
echo "$0: Cannot find myself" 1>&2
exit 1
fi
fi
PATH=/sbin:/usr/sbin:/bin:/usr/bin
export PATH
#
# We can add local options here
# e.g. localoptions='rsize=8192,wsize=8192'
#
localoptions=''
#
# Daemon options
# e.g. --timeout=60
#
daemonoptions=''
#
# Check for all maps that are to be loaded
#
function getschemes()
{
grep ^automount: /etc/nsswitch.conf | sed -e 's/^.*://' -e 's/\[.*\]/ /g'
}
function catnismap()
{
if [ -z "$1" ] ; then
map="auto_master"
else
map="$1"
fi
/usr/bin/ypcat -k "$map" 2> /dev/null | sed -e '/^#/d' -e '/^$/d'
}
function getfilemounts()
{
if [ -f /etc/auto.master ] ; then
cat /etc/auto.master | grep -v '^\+' | sed -e '/^#/d' -e '/^$/d'
for nismap in `cat /etc/auto.master | grep '^\+' | sed -e '/^#/d' -
e '/^$/d'`; do
catnismap `echo "$nismap" | sed -e 's/^\+//'`
done
fi
}
function getnismounts()
{
YPMAP=`catnismap auto.master`
if [ -z "$YPMAP" ]; then
catnismap
else
catnismap auto.master
fi
}
function getldapmounts()
{
/usr/lib/autofs/autofs-ldap-auto-master 2> /dev/null
}
function getrawmounts()
{
for scheme in `getschemes` ; do
case "$scheme" in
files)
if [ -z "$filescheme" ] ; then
getfilemounts
filescheme=1
export filescheme
fi
;;
nis)
if [ -z "$nisscheme" ] ; then
getnismounts
nisscheme=1
export nisscheme
fi
;;
ldap*)
if [ -z "$ldapscheme" ] ; then
getldapmounts
ldapscheme=1
export ldapscheme
fi
;;
esac
done
}
#
# This function will build a list of automount commands to execute in
# order to activate all the mount points. It is used to figure out
# the difference of automount points in case of a reload
#
function getmounts()
{
knownmaps=" "
getrawmounts | (
while read dir map options
do
# These checks screen out duplicates and skip over directories
# where the map is '-'.
# We can't do empty or direct host maps, so don't bother trying.
if [ ! -z "$map" -a "$map" = "-hosts" ] ; then
continue
fi
if [ ! -z "$dir" -a ! -z "$map" \
-a x`echo "$map" | cut -c1` != 'x-' \
-a "`echo "$knownmaps" | grep '\<'$dir/`" = "" ]
then
# If the options include a -t or --timeout or a -g or --ghost
# parameter, then pull those particular options out.
: echo DAEMONOPTIONS OPTIONS $daemonoptions $options
startupoptions=
if echo "$daemonoptions" | grep -q -- '-t' ; then
startupoptions="--timeout=$(echo $daemonoptions $options
| \
sed 's/.*--*t\(imeout\)*[ \t=]*\([0-9][0-9]*\).*$/
\2/g')"
fi
# Override timeout in $daemonoptions with map $options
if echo "$options" | grep -q -- '-t' ; then
startupoptions="--timeout=$(echo $daemonoptions $options
| \
sed 's/.*--*t\(imeout\)*[ \t=]*\([0-9][0-9]*\).*$/
\2/g')"
fi
if echo "$daemonoptions $options" | grep -q -- '-g' ; then
startupoptions="$startupoptions --ghost"
fi
if echo "$daemonoptions $options" | grep -q -- '-v' ; then
startupoptions="$startupoptions --verbose"
fi
if echo "$daemonoptions $options" | grep -q -- '-d' ; then
startupoptions="$startupoptions --debug"
fi
# Other option flags are intended for maps.
mapoptions="$(echo "$daemonoptions $options" |\
sed 's/--*t\(imeout\)*[ \t=]*\([0-9][0-9]*\)//g' |
sed 's/--*g\(host\)*//g' |
sed 's/--*v\(verbose\)*//g' |
sed 's/--*d\(ebug\)*//g')"
# Break up the maptype and map, if the map type is specified
maptype=`echo $map | cut -f1 -d:`
# Handle degenerate map specifiers
if [ "$maptype" = "$map" ] ; then
if [ -x "$map" ]; then
maptype=program
elif [ -x "/etc/$map" ]; then
maptype=program
map=`echo /etc/$map | sed 's^//^/^g'`
elif [ -f "$map" ]; then
maptype=file
elif [ "$map" = "hesiod" -o "$map" = "userhome" ] ; then
maptype=$map
map=
elif [ "$map" = "multi" ] ; then
maptype=$map
map=
else
maptype=yp
# If the master map says the maps have '_' why change
it?
# map=`basename $map | sed -e
s/^auto_home/auto.home/ -e s/^auto_mnt/auto.mnt/`
map=`basename $map | sed 's^//^/^g'`
fi
fi
map=`echo $map | cut -f2- -d:`
: echo STARTUPOPTIONS $startupoptions
: echo DIR $dir
: echo MAPTYPE $maptype
: echo MAP $map
: echo MAPOPTIONS $mapoptions
: echo LOCALOPTIONS $localoptions
echo "$DAEMON $startupoptions $dir $maptype $map $mapoptions
$localoptions" | sed -e 's/ / /g' -e 's/ / /g'
: echo ------------------------
fi
knownmaps=" $dir/ $knownmaps"
done
)
}
#
# Status lister.
#
function status()
{
echo $"Configured Mount Points:"
echo "------------------------"
getmounts
echo ""
echo $"Active Mount Points:"
echo "--------------------"
ps axwww|grep "[0-9]:[0-9][0-9] $DAEMON " | (
while read pid tt stat time command; do echo $command; done
)
}
# return true if at least one pid is alive
function alive()
{
if [ -z "$*" ]; then
return 1
fi
for i in $*; do
if kill -0 $i 2> /dev/null; then
return 0
fi
done
return 1
}
#
# Find pid of deepest nested submount
#
function get_deepest_submount()
{
ps axw|grep $DAEMON|\
grep submount|\
sed -e 's/--timeout[ =][0-9]*//g'|\
awk '{print $7,$1}'|\
sort -r|\
awk 'BEGIN {ORS=" "} {print $2}'|\
awk '{print $1}'
}
#
# Signal each nested submount
#
function signal_submounts()
{
tries=0
pid=`get_deepest_submount`
while [ -n "$pid" -a $tries -lt 8 ]; do
oldpid=$pid
kill -USR2 $pid 2 > /dev/null
usleep 300000
pid=`get_deepest_submount`
if [ "$oldpid" = "$pid" ]; then
tries=`expr $tries + 1`
else
tries=0
fi
done
echo $pid
}
#
# Signal each automount
#
function signal_automounts()
{
RETVAL=0
if [ -z "`signal_submounts`" ]; then
pids="`/sbin/pidof $DAEMON`"
for one_pid in $pids ; do
kill -USR2 $one_pid 2 > /dev/null
count=0
while ps ax|grep -v grep|grep $one_pid >/dev/null; do
usleep 200000
count=$(expr $count + 1)
if [ $count -gt 20 ]; then
break;
fi
done
done
fi
if [ -n "`/sbin/pidof $DAEMON`" ] ; then
RETVAL=1
fi
return $RETVAL
}
# Redhat start/stop function.
#
function redhat()
{
#
# See how we were called.
#
case "$1" in
start)
# Make sure the autofs filesystem type is available.
(grep -q autofs /proc/filesystems || /sbin/modprobe -k autofs4
|| /sbin/modprobe -k autofs) 2> /dev/null
echo -n $"Starting $prog:"
TMP=`mktemp /tmp/autofs.XXXXXX` || { echo $"could not make temp file"
>& 2; exit 1; }
getmounts | tee $TMP | sh
RETVAL=$?
if [ -s $TMP ] ; then
if [ $RETVAL -eq 0 ] ; then
success "$prog startup"
else
failure "$prog startup"
fi
[ $RETVAL = 0 ] && touch /var/lock/subsys/autofs
else
echo -n "" $"No Mountpoints Defined"
success "$prog startup"
fi
rm -f $TMP
echo
;;
stop)
echo -n $"Stopping $prog:"
if [ -z "`pidofproc $prog`" -a -z "`getmounts`" ]; then
RETVAL=0
else
signal_automounts
RETVAL=$?
fi
count=0
while [ -n "`/sbin/pidof $DAEMON`" -a $count -lt 10 ] ; do
killproc $DAEMON -USR2 >& /dev/null
RETVAL=$?
[ $RETVAL = 0 -a -z "`/sbin/pidof $DAEMON`" ] || sleep 3
count=`expr $count + 1`
done
umount -a -f -t autofs
rm -f /var/lock/subsys/autofs
if [ -n "`/sbin/pidof $DAEMON`" ] ; then
failure "$prog shutdown"
else
success "$prog shutdown"
fi
echo
;;
restart)
redhat stop
redhat start
;;
reload)
if [ ! -f /var/lock/subsys/autofs ]; then
echo $"$prog not running"
RETVAL=1
return
fi
echo "Checking for changes to /etc/auto.master ...."
TMP1=`mktemp /tmp/autofs.XXXXXX` || { echo "could not make temp file"
>& 2; exit 1; }
TMP2=`mktemp /tmp/autofs.XXXXXX` || { echo "could not make temp file"
>& 2; exit 1; }
getmounts >$TMP1
ps axwww|grep "[0-9]:[0-9][0-9] $DAEMON " | (
while read pid tt stat time command; do
echo "$command" >>$TMP2
if ! grep -q "^$command" $TMP1; then
if ! echo "$command" | grep -q -e --submount; then
kill -USR2 $pid 2> /dev/null
echo $"Stop $command"
fi
else
kill -HUP $pid 2> /dev/null
echo $"Reload map $command"
fi
done
)
cat $TMP1 | ( while read x; do
if ! grep -q "^$x" $TMP2; then
$x
echo $"Start $x"
fi
done )
rm -f $TMP1 $TMP2
;;
status)
status
;;
condrestart)
[ -f /var/lock/subsys/autofs ] && redhat restart
RETVAL=0
;;
*)
echo $"Usage: $0 {start|stop|restart|reload|condrestart|status}"
RETVAL=0
esac
}
#
# Slackware start/stop functions.
#
function slackware()
{
#
# See how we were called.
#
case "$1" in
start)
echo -n 'Starting automounter:'
getmounts | while read cmd mnt rest
do
echo -n " $mnt"
pidfile=/var/run/autofs`echo $mnt | sed 's/\//./'`.pid
$DAEMON $daemonoptions -- $mnt $rest
done
echo "."
;;
stop)
echo 'Stopping automounter.'
kill -TERM $(/sbin/pidof $DAEMON)
rm -f /var/lock/subsys/autofs
;;
reload|restart)
echo "Reloading automounter: checking for changes ... "
TMP=/var/run/autofs.tmp
getmounts >$TMP
for i in /var/run/autofs.*.pid
do
pid=`head -n 1 $i 2>/dev/null`
[ "$pid" = "" ] && continue
command=`tail +2 $i`
if ! grep -q "^$command" $TMP
then
echo "Stopping automounter: $command"
kill -USR2 $pid 2> /dev/null
else
echo "Reloading automounter map: $command"
kill -HUP $pid 2> /dev/null
fi
done
rm -f $TMP
$thisscript start
;;
status)
status
;;
*)
echo "Usage: $initdir/autofs {start|stop|restart|reload|status}" >&2
exit 1
;;
esac
}
RETVAL=0
if [ $system = slackware ]; then
slackware "$@"
elif [ $system = redhat ]; then
redhat "$@"
fi
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