diff options
| -rw-r--r-- | etc/rc | 14 | ||||
| -rw-r--r-- | etc/rc.d/devd | 1 | ||||
| -rw-r--r-- | etc/rc.d/diskless | 108 | ||||
| -rw-r--r-- | etc/rc.d/initdiskless | 231 | ||||
| -rw-r--r-- | etc/rc.d/rcconf | 12 | ||||
| -rw-r--r-- | etc/rc.d/resolv | 108 | ||||
| -rw-r--r-- | etc/rc.d/tmp | 108 | ||||
| -rw-r--r-- | etc/rc.d/var | 108 | ||||
| -rw-r--r-- | etc/rc.initdiskless | 231 |
9 files changed, 636 insertions, 285 deletions
@@ -69,11 +69,10 @@ case ${rc_ng} in [Yy][Ee][Ss]) . /etc/rc.subr - # Load system configuration files. The 'XXX' is there because - # the function requires an argument that we don't need to use. + # Note: the system configuration files are loaded as part of + # the RCNG system (rc.d/rccond). Do not load them here as it may + # interfere with diskless booting. # - load_rc_config 'XXX' - if [ "$1" = autoboot ]; then autoboot=yes _boot="faststart" @@ -88,13 +87,6 @@ case ${rc_ng} in for _rc_elem in ${files}; do run_rc_script ${_rc_elem} ${_boot} - # Local FreeBSD hack to reload the rc.conf on - # a return status of 2 - if [ $? -eq 2 ]; then - unset _rc_conf_loaded - load_rc_config 'XXX' - echo "Reloading rc.conf." - fi done echo '' diff --git a/etc/rc.d/devd b/etc/rc.d/devd index 9636eaa..659ca71 100644 --- a/etc/rc.d/devd +++ b/etc/rc.d/devd @@ -3,6 +3,7 @@ # $FreeBSD$ # +# REQUIRE: rcconf # PROVIDE: devd # BEFORE: disks # KEYWORD: FreeBSD diff --git a/etc/rc.d/diskless b/etc/rc.d/diskless index 647e3b7..e74d0bd 100644 --- a/etc/rc.d/diskless +++ b/etc/rc.d/diskless @@ -28,7 +28,7 @@ # # PROVIDE: diskless -# REQUIRE: initdiskless mountcritlocal +# REQUIRE: initdiskless rcconf mountcritlocal # BEFORE: addswap random # KEYWORD: FreeBSD @@ -42,14 +42,12 @@ name="diskless2" # as close as possible between 5-current and 4-stable. # $1 = size # $2 = mount point -# $3 = md unit number (ignored in pre 5.0 systems) -# $4 = (optional) bytes-per-inode -mount_md() -{ - if [ -n "$4" ]; then - bpi="-i $4" +# $3 = (optional) bytes-per-inode +mount_md() { + if [ -n "$3" ]; then + bpi="-i $3" fi - /sbin/mdmfs $bpi -s $1 -M md$3 $2 + /sbin/mdmfs $bpi -s $1 -M md $2 } # If there is a global system configuration file, suck it in. @@ -64,16 +62,36 @@ elif [ -r /etc/rc.conf ]; then . /etc/rc.conf fi -echo "+++ mount_md of /var" -mount_md ${varsize:=32m} /var 1 +# If we do not have a writable /var, create a memory +# filesystem for /var. We don't have /usr yet so +# use mkdir instead of touch to test. We want mount +# to record its mounts so we have to make sure /var/db +# exists before doing the mount -a. +# +if (/bin/mkdir /var/.diskless 2> /dev/null); then + rmdir /var/.diskless +else + echo "+++ mount_md of /var" + mount_md ${varsize:=32m} /var +fi +if [ ! -d /var/db ]; then + mkdir /var/db +fi + +# Now we need the rest of our mounts, particularly /usr +# +mount -a # chown and chgrp are in /usr + +# Populate /var +# echo "+++ populate /var using /etc/mtree/BSD.var.dist" -/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var +/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null case ${sendmail_enable} in [Nn][Oo][Nn][Ee]) ;; *) - /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / + /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null ;; esac @@ -86,34 +104,62 @@ fi echo "+++ create lastlog" /usr/bin/touch /var/log/lastlog -mount -a # chown and chgrp are in /usr - -# Since we are starting with a very fresh /etc on an MFS: -if [ -d /conf/default/etc ]; then - newaliases -fi - -# -# XXX make sure to create one dir for each printer as requested by lpd +# Make sure our aliases database is uptodate, the aliases may have +# been overriden in /conf. # +/usr/bin/newaliases -# If /tmp is a symlink, assume it points to somewhere writable, like -# /var/tmp, otherwise, use a small memory filesystem for /tmp. +# XXX make sure to create one dir for each printer as requested by lpd # -# XXX: mtree runs too early to create any directories needed in /tmp, -# so if /var/tmp == /tmp, then you don't get a vi.recover. +# If we do not have a writable /tmp, create a memory +# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, +# then it should already be writable). # -if [ ! -L /tmp ]; then - mount_md ${tmpsize:=64m} /tmp 2 - chmod 01777 /tmp +if (/bin/mkdir /tmp/.diskless 2> /dev/null); then + rmdir /tmp/.diskless +else + if [ -h /tmp ]; then + echo "*** /tmp is a symlink to a non-writable area!" + echo "dropping into shell, ^D to continue anyway." + /bin/sh + else + mount_md ${tmpsize:=20480} /tmp + chmod 01777 /tmp + fi fi -if sysctl vfs.devfs.generation > /dev/null 2>&1; then +if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then # we have DEVFS, no worries... true +elif (/bin/mkdir /dev/.diskless 2> /dev/null); then + # if /dev is writable assume it has already been populated + # via rc.diskless1 + # + rmdir /dev/.diskless else - # extract a list of device entries, then copy them to a writable fs (cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp - mount_md 4096 /dev 3 512 + mount_md 4096 /dev 512 (cd /; cpio -i -H newc -d < /tmp/dev.tmp) + rm -f /tmp/dev.tmp fi + +# generate our hostname +# +if [ -z "`hostname -s`" ]; then + hostname=`/usr/bin/kenv dhcp.host-name` + hostname $hostname + echo "Hostname is $hostname" +fi + +# if the info is available via dhcp/kenv +# build the resolv.conf +# +if [ ! -e /etc/resolv.conf ]; then + echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf + + set `/usr/bin/kenv dhcp.domain-name-servers` + for ns in `IFS=','; echo $*`; do + echo nameserver $ns >> /etc/resolv.conf; + done +fi + diff --git a/etc/rc.d/initdiskless b/etc/rc.d/initdiskless index faa2acb..5ddc768 100644 --- a/etc/rc.d/initdiskless +++ b/etc/rc.d/initdiskless @@ -26,24 +26,61 @@ # # $FreeBSD$ # - # PROVIDE: initdiskless # KEYWORD: FreeBSD -dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` -[ ${dlv:=0} -eq 0 ] && exit 0 - + +# On entry to this script the entire system consists of a read-only root +# mounted via NFS. We use the contents of /conf to create and populate +# memory filesystems. The kernel has run BOOTP and configured an interface +# (otherwise it would not have been able to mount the NFS root!) +# +# The following directories are scanned. Each sucessive directory overrides +# (is merged into) the previous one. +# +# /conf/base universal base +# /conf/default modified by a secondary universal base +# /conf/${ipba} modified based on the assigned broadcast IP +# /conf/${ip} modified based on the machine's assigned IP +# +# Each of these directories may contain any number of subdirectories which +# represent directories in / on the diskless machine. The existance of +# these subdirectories causes this script to create a MEMORY FILESYSTEM for +# /<sub_directory_name>. For example, if /conf/base/etc exists then a +# memory filesystem will be created for /etc. +# +# If a subdirectory contains the file 'diskless_remount' the contents of +# the file is used to remount the subdirectory prior to it being copied to +# the memory filesystem. For example, if /conf/base/etc/diskless_remount +# contains the string 'my.server.com:/etc' then my.server.com:/etc will be +# mounted in place of the subdirectory. This allows you to avoid making +# duplicates of system directories in /conf. # -# BOOTP has mounted / for us. Assume a read-only mount. We must then -# - figure out our IP by querying the interface -# - mount /etc as an MFS -# - populate /etc from /conf/default version -# - override files in /etc with files from /conf/*/etc where -# '*' is default, netmask of client, ip-address of client +# If a subdirectory contains the file 'md_size', the contents of the +# file is used to determine the size of the memory filesystem, in 512 +# byte sectors. The default is 8192 (4MB). You only have to specify an +# md_size if the default doesn't work for you (i.e. if it is too big or +# too small). Note that in -current the default is 4096 (2MB). For +# example, /conf/base/etc/md_size might contain '16384'. # -# The operator is in charge of setting /conf/*/etc/* things as appropriate. -# Typically rc.conf and fstab need to be changed, but possibly also other -# files such as inetd.conf etc. +# If /conf/<special_dir>/SUBDIR.cpio.gz exists, the file is cpio'd into +# the specified /SUBDIR (and a memory filesystem is created for /SUBDIR +# if necessary). +# +# If /conf/<special_dir>/SUBDIR.remove exists, the file contains a list +# of paths which are rm -rf'd relative to /SUBDIR. +# +# You will almost universally want to create a /conf/base/etc containing +# a diskless_remount and possibly an md_size file. You will then almost +# universally want to override rc.conf, rc.local, and fstab by creating +# /conf/default/etc/{rc.conf,rc.local,fstab}. Your fstab should be sure +# to mount a /usr... typically an NFS readonly /usr. +# +# NOTE! rc.diskless2 will create /var, /tmp, and /dev. Those filesystems +# should not be specified in /conf. At least not yet. + +dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` +[ ${dlv:=0} -eq 0 ] && exit 0 # chkerr: # @@ -52,22 +89,37 @@ dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` # checks error code and drops into shell on failure. # if shell exits, terminates script as well as /etc/rc. # -chkerr() -{ - case $1 in - 0) - ;; - *) - echo "$2 failed: dropping into /bin/sh" - /bin/sh - # RESUME - ;; - esac +chkerr() { + case $1 in + 0) + ;; + *) + echo "$2 failed: dropping into /bin/sh" + /bin/sh + # RESUME + ;; + esac } -mount_md() -{ - /sbin/mdmfs -i 4096 -s $1 -M md$3 $2 +# Create a generic memory disk +# +mount_md() { + /sbin/mdmfs -i 4096 -s $1 -M md $2 +} + +# Create the memory filesystem if it has not already been created +# +create_md() { + if [ "x`eval echo \\$md_created_$1`" = "x" ]; then + if [ "x`eval echo \$md_size_$1`" = "x" ]; then + md_size=4096 + else + md_size=`eval echo \\$md_size_$1` + fi + mount_md $md_size /$1 + /bin/chmod 755 /$1 + eval md_created_$1=created + fi } # DEBUGGING @@ -81,62 +133,91 @@ bootp_ipa="" bootp_ipbca="" iflist=`ifconfig -l` for i in ${iflist} ; do - set `ifconfig ${i}` - while [ $# -ge 1 ] ; do - if [ "${bootp_ifc}" = "" -a "$1" = "inet" ]; then - bootp_ifc=${i} ; bootp_ipa=${2} ; shift - fi - if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ]; then - bootp_ipbca=$2; shift - fi - shift - done - if [ "${bootp_ifc}" != "" ]; then - break - fi + set `ifconfig ${i}` + while [ $# -ge 1 ] ; do + if [ "${bootp_ifc}" = "" -a "$1" = "inet" ] ; then + bootp_ifc=${i} ; bootp_ipa=${2} ; shift + fi + if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ] ; then + bootp_ipbca=$2; shift + fi + shift + done + if [ "${bootp_ifc}" != "" ] ; then + break + fi done echo "Interface ${bootp_ifc} IP-Address ${bootp_ipa} Broadcast ${bootp_ipbca}" -if [ -z "`hostname -s`" ]; then - hostname=`kenv dhcp.host-name` - hostname $hostname - echo "Hostname is $hostname" -fi - -if [ -d /conf/default/etc ]; then - mount_md 4096 /etc 0 - chkerr $? "MFS mount on /etc" - /bin/chmod 755 /etc - - /bin/cp -Rp /conf/default/etc/* /etc - chkerr $? "cp /conf/default/etc to /etc MFS" -fi - -# Allow for override files to replace files in /etc. Use /conf/*/etc to find -# the override files. First choice is default files that # always override, -# then files that from the directory that matches the client's broadcast -# address, finally followed by overrides that match the client's IP address. +# Resolve templates in /conf/base, /conf/default, /conf/${bootp_ipbca}, +# and /conf/${bootp_ipa}. For each subdirectory found within these +# directories: +# +# - calculate memory filesystem sizes. If the subdirectory (prior to +# NFS remounting) contains the file 'md_size', the contents specified +# in 512 byte sectors will be used to size the memory filesystem. Otherwise +# 8192 sectors (4MB) is used. # -# This way we have some flexibility to handle clusters of machines on -# separate subnets. +# - handle NFS remounts. If the subdirectory contains the file +# diskless_remount, the contents of the file is NFS mounted over +# the directory. For example /conf/base/etc/diskless_remount +# might contain 'myserver:/etc'. NFS remounts allow you to avoid +# having to dup your system directories in /conf. Your server must +# be sure to export those filesystems -alldirs, however. +# +for i in base default ${bootp_ipbca} ${bootp_ipa} ; do + for j in /conf/$i/* ; do + # memory filesystem size specification + # + subdir=${j##*/} + if [ -d $j -a -f $j/md_size ]; then + eval md_size_$subdir=`cat $j/md_size` + fi -for i in ${bootp_ipbca} ${bootp_ipa} ${hostname} ; do - if [ -d /conf/${i}/etc ]; then - cp -Rp /conf/${i}/etc/* /etc + # NFS remount + # + if [ -d $j -a -f $j/diskless_remount ]; then + nfspt=`/bin/cat $j/diskless_remount` + mount_nfs $nfspt $j + chkerr $? "mount_nfs $nfspt $j" fi + done done +# - Create all required MFS filesystems and populate them from +# our templates. Support both a direct template and a dir.cpio.gz +# archive. Support dir.remove files containing a list of relative +# paths to remove. # -# if the info is available via dhcp/kenv -# build the resolv.conf -# -if [ ! -e /etc/resolv.conf ]; then - echo domain `kenv dhcp.domain-name` > /etc/resolv.conf +# TODO: +# + find a way to assign a 'group' identifier to a machine +# so we can use group-specific configurations; - set `kenv dhcp.domain-name-servers` - for ns in `IFS=','; echo $*`; do - echo nameserver $ns >> /etc/resolv.conf; - done -fi +for i in base default ${bootp_ipbca} ${bootp_ipa} ; do + for j in /conf/$i/* ; do + subdir=${j##*/} + if [ -d $j ]; then + create_md $subdir + cp -Rp $j/* /$subdir + fi + done + for j in /conf/$i/*.cpio.gz ; do + subdir=${j%*.cpio.gz} + subdir=${subdir##*/} + if [ -f $j ]; then + create_md $subdir + echo "Loading /$subdir from cpio archive $j" + (cd / ; /stand/gzip -d < $j | /stand/cpio --extract -d ) + fi + done + for j in /conf/$i/*.remove ; do + subdir=${j%*.remove} + subdir=${subdir##*/} + if [ -f $j ]; then + # doubly sure it is a memory disk before rm -rf'ing + create_md $subdir + (cd /$subdir; rm -rf `/bin/cat $j`) + fi + done +done -exit 2 # Tell /etc/rc to re-source rc.conf diff --git a/etc/rc.d/rcconf b/etc/rc.d/rcconf new file mode 100644 index 0000000..0fe75ae --- /dev/null +++ b/etc/rc.d/rcconf @@ -0,0 +1,12 @@ +#!/bin/sh +# +# $FreeBSD$ +# + +# PROVIDE: rcconf +# REQUIRE: initdiskless +# BEFORE: disks initrandom +# KEYWORD: FreeBSD + +echo "Loading configuration files." +load_rc_config 'XXX' diff --git a/etc/rc.d/resolv b/etc/rc.d/resolv index 647e3b7..e74d0bd 100644 --- a/etc/rc.d/resolv +++ b/etc/rc.d/resolv @@ -28,7 +28,7 @@ # # PROVIDE: diskless -# REQUIRE: initdiskless mountcritlocal +# REQUIRE: initdiskless rcconf mountcritlocal # BEFORE: addswap random # KEYWORD: FreeBSD @@ -42,14 +42,12 @@ name="diskless2" # as close as possible between 5-current and 4-stable. # $1 = size # $2 = mount point -# $3 = md unit number (ignored in pre 5.0 systems) -# $4 = (optional) bytes-per-inode -mount_md() -{ - if [ -n "$4" ]; then - bpi="-i $4" +# $3 = (optional) bytes-per-inode +mount_md() { + if [ -n "$3" ]; then + bpi="-i $3" fi - /sbin/mdmfs $bpi -s $1 -M md$3 $2 + /sbin/mdmfs $bpi -s $1 -M md $2 } # If there is a global system configuration file, suck it in. @@ -64,16 +62,36 @@ elif [ -r /etc/rc.conf ]; then . /etc/rc.conf fi -echo "+++ mount_md of /var" -mount_md ${varsize:=32m} /var 1 +# If we do not have a writable /var, create a memory +# filesystem for /var. We don't have /usr yet so +# use mkdir instead of touch to test. We want mount +# to record its mounts so we have to make sure /var/db +# exists before doing the mount -a. +# +if (/bin/mkdir /var/.diskless 2> /dev/null); then + rmdir /var/.diskless +else + echo "+++ mount_md of /var" + mount_md ${varsize:=32m} /var +fi +if [ ! -d /var/db ]; then + mkdir /var/db +fi + +# Now we need the rest of our mounts, particularly /usr +# +mount -a # chown and chgrp are in /usr + +# Populate /var +# echo "+++ populate /var using /etc/mtree/BSD.var.dist" -/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var +/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null case ${sendmail_enable} in [Nn][Oo][Nn][Ee]) ;; *) - /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / + /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null ;; esac @@ -86,34 +104,62 @@ fi echo "+++ create lastlog" /usr/bin/touch /var/log/lastlog -mount -a # chown and chgrp are in /usr - -# Since we are starting with a very fresh /etc on an MFS: -if [ -d /conf/default/etc ]; then - newaliases -fi - -# -# XXX make sure to create one dir for each printer as requested by lpd +# Make sure our aliases database is uptodate, the aliases may have +# been overriden in /conf. # +/usr/bin/newaliases -# If /tmp is a symlink, assume it points to somewhere writable, like -# /var/tmp, otherwise, use a small memory filesystem for /tmp. +# XXX make sure to create one dir for each printer as requested by lpd # -# XXX: mtree runs too early to create any directories needed in /tmp, -# so if /var/tmp == /tmp, then you don't get a vi.recover. +# If we do not have a writable /tmp, create a memory +# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, +# then it should already be writable). # -if [ ! -L /tmp ]; then - mount_md ${tmpsize:=64m} /tmp 2 - chmod 01777 /tmp +if (/bin/mkdir /tmp/.diskless 2> /dev/null); then + rmdir /tmp/.diskless +else + if [ -h /tmp ]; then + echo "*** /tmp is a symlink to a non-writable area!" + echo "dropping into shell, ^D to continue anyway." + /bin/sh + else + mount_md ${tmpsize:=20480} /tmp + chmod 01777 /tmp + fi fi -if sysctl vfs.devfs.generation > /dev/null 2>&1; then +if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then # we have DEVFS, no worries... true +elif (/bin/mkdir /dev/.diskless 2> /dev/null); then + # if /dev is writable assume it has already been populated + # via rc.diskless1 + # + rmdir /dev/.diskless else - # extract a list of device entries, then copy them to a writable fs (cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp - mount_md 4096 /dev 3 512 + mount_md 4096 /dev 512 (cd /; cpio -i -H newc -d < /tmp/dev.tmp) + rm -f /tmp/dev.tmp fi + +# generate our hostname +# +if [ -z "`hostname -s`" ]; then + hostname=`/usr/bin/kenv dhcp.host-name` + hostname $hostname + echo "Hostname is $hostname" +fi + +# if the info is available via dhcp/kenv +# build the resolv.conf +# +if [ ! -e /etc/resolv.conf ]; then + echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf + + set `/usr/bin/kenv dhcp.domain-name-servers` + for ns in `IFS=','; echo $*`; do + echo nameserver $ns >> /etc/resolv.conf; + done +fi + diff --git a/etc/rc.d/tmp b/etc/rc.d/tmp index 647e3b7..e74d0bd 100644 --- a/etc/rc.d/tmp +++ b/etc/rc.d/tmp @@ -28,7 +28,7 @@ # # PROVIDE: diskless -# REQUIRE: initdiskless mountcritlocal +# REQUIRE: initdiskless rcconf mountcritlocal # BEFORE: addswap random # KEYWORD: FreeBSD @@ -42,14 +42,12 @@ name="diskless2" # as close as possible between 5-current and 4-stable. # $1 = size # $2 = mount point -# $3 = md unit number (ignored in pre 5.0 systems) -# $4 = (optional) bytes-per-inode -mount_md() -{ - if [ -n "$4" ]; then - bpi="-i $4" +# $3 = (optional) bytes-per-inode +mount_md() { + if [ -n "$3" ]; then + bpi="-i $3" fi - /sbin/mdmfs $bpi -s $1 -M md$3 $2 + /sbin/mdmfs $bpi -s $1 -M md $2 } # If there is a global system configuration file, suck it in. @@ -64,16 +62,36 @@ elif [ -r /etc/rc.conf ]; then . /etc/rc.conf fi -echo "+++ mount_md of /var" -mount_md ${varsize:=32m} /var 1 +# If we do not have a writable /var, create a memory +# filesystem for /var. We don't have /usr yet so +# use mkdir instead of touch to test. We want mount +# to record its mounts so we have to make sure /var/db +# exists before doing the mount -a. +# +if (/bin/mkdir /var/.diskless 2> /dev/null); then + rmdir /var/.diskless +else + echo "+++ mount_md of /var" + mount_md ${varsize:=32m} /var +fi +if [ ! -d /var/db ]; then + mkdir /var/db +fi + +# Now we need the rest of our mounts, particularly /usr +# +mount -a # chown and chgrp are in /usr + +# Populate /var +# echo "+++ populate /var using /etc/mtree/BSD.var.dist" -/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var +/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null case ${sendmail_enable} in [Nn][Oo][Nn][Ee]) ;; *) - /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / + /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null ;; esac @@ -86,34 +104,62 @@ fi echo "+++ create lastlog" /usr/bin/touch /var/log/lastlog -mount -a # chown and chgrp are in /usr - -# Since we are starting with a very fresh /etc on an MFS: -if [ -d /conf/default/etc ]; then - newaliases -fi - -# -# XXX make sure to create one dir for each printer as requested by lpd +# Make sure our aliases database is uptodate, the aliases may have +# been overriden in /conf. # +/usr/bin/newaliases -# If /tmp is a symlink, assume it points to somewhere writable, like -# /var/tmp, otherwise, use a small memory filesystem for /tmp. +# XXX make sure to create one dir for each printer as requested by lpd # -# XXX: mtree runs too early to create any directories needed in /tmp, -# so if /var/tmp == /tmp, then you don't get a vi.recover. +# If we do not have a writable /tmp, create a memory +# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, +# then it should already be writable). # -if [ ! -L /tmp ]; then - mount_md ${tmpsize:=64m} /tmp 2 - chmod 01777 /tmp +if (/bin/mkdir /tmp/.diskless 2> /dev/null); then + rmdir /tmp/.diskless +else + if [ -h /tmp ]; then + echo "*** /tmp is a symlink to a non-writable area!" + echo "dropping into shell, ^D to continue anyway." + /bin/sh + else + mount_md ${tmpsize:=20480} /tmp + chmod 01777 /tmp + fi fi -if sysctl vfs.devfs.generation > /dev/null 2>&1; then +if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then # we have DEVFS, no worries... true +elif (/bin/mkdir /dev/.diskless 2> /dev/null); then + # if /dev is writable assume it has already been populated + # via rc.diskless1 + # + rmdir /dev/.diskless else - # extract a list of device entries, then copy them to a writable fs (cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp - mount_md 4096 /dev 3 512 + mount_md 4096 /dev 512 (cd /; cpio -i -H newc -d < /tmp/dev.tmp) + rm -f /tmp/dev.tmp fi + +# generate our hostname +# +if [ -z "`hostname -s`" ]; then + hostname=`/usr/bin/kenv dhcp.host-name` + hostname $hostname + echo "Hostname is $hostname" +fi + +# if the info is available via dhcp/kenv +# build the resolv.conf +# +if [ ! -e /etc/resolv.conf ]; then + echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf + + set `/usr/bin/kenv dhcp.domain-name-servers` + for ns in `IFS=','; echo $*`; do + echo nameserver $ns >> /etc/resolv.conf; + done +fi + diff --git a/etc/rc.d/var b/etc/rc.d/var index 647e3b7..e74d0bd 100644 --- a/etc/rc.d/var +++ b/etc/rc.d/var @@ -28,7 +28,7 @@ # # PROVIDE: diskless -# REQUIRE: initdiskless mountcritlocal +# REQUIRE: initdiskless rcconf mountcritlocal # BEFORE: addswap random # KEYWORD: FreeBSD @@ -42,14 +42,12 @@ name="diskless2" # as close as possible between 5-current and 4-stable. # $1 = size # $2 = mount point -# $3 = md unit number (ignored in pre 5.0 systems) -# $4 = (optional) bytes-per-inode -mount_md() -{ - if [ -n "$4" ]; then - bpi="-i $4" +# $3 = (optional) bytes-per-inode +mount_md() { + if [ -n "$3" ]; then + bpi="-i $3" fi - /sbin/mdmfs $bpi -s $1 -M md$3 $2 + /sbin/mdmfs $bpi -s $1 -M md $2 } # If there is a global system configuration file, suck it in. @@ -64,16 +62,36 @@ elif [ -r /etc/rc.conf ]; then . /etc/rc.conf fi -echo "+++ mount_md of /var" -mount_md ${varsize:=32m} /var 1 +# If we do not have a writable /var, create a memory +# filesystem for /var. We don't have /usr yet so +# use mkdir instead of touch to test. We want mount +# to record its mounts so we have to make sure /var/db +# exists before doing the mount -a. +# +if (/bin/mkdir /var/.diskless 2> /dev/null); then + rmdir /var/.diskless +else + echo "+++ mount_md of /var" + mount_md ${varsize:=32m} /var +fi +if [ ! -d /var/db ]; then + mkdir /var/db +fi + +# Now we need the rest of our mounts, particularly /usr +# +mount -a # chown and chgrp are in /usr + +# Populate /var +# echo "+++ populate /var using /etc/mtree/BSD.var.dist" -/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var +/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null case ${sendmail_enable} in [Nn][Oo][Nn][Ee]) ;; *) - /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / + /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null ;; esac @@ -86,34 +104,62 @@ fi echo "+++ create lastlog" /usr/bin/touch /var/log/lastlog -mount -a # chown and chgrp are in /usr - -# Since we are starting with a very fresh /etc on an MFS: -if [ -d /conf/default/etc ]; then - newaliases -fi - -# -# XXX make sure to create one dir for each printer as requested by lpd +# Make sure our aliases database is uptodate, the aliases may have +# been overriden in /conf. # +/usr/bin/newaliases -# If /tmp is a symlink, assume it points to somewhere writable, like -# /var/tmp, otherwise, use a small memory filesystem for /tmp. +# XXX make sure to create one dir for each printer as requested by lpd # -# XXX: mtree runs too early to create any directories needed in /tmp, -# so if /var/tmp == /tmp, then you don't get a vi.recover. +# If we do not have a writable /tmp, create a memory +# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, +# then it should already be writable). # -if [ ! -L /tmp ]; then - mount_md ${tmpsize:=64m} /tmp 2 - chmod 01777 /tmp +if (/bin/mkdir /tmp/.diskless 2> /dev/null); then + rmdir /tmp/.diskless +else + if [ -h /tmp ]; then + echo "*** /tmp is a symlink to a non-writable area!" + echo "dropping into shell, ^D to continue anyway." + /bin/sh + else + mount_md ${tmpsize:=20480} /tmp + chmod 01777 /tmp + fi fi -if sysctl vfs.devfs.generation > /dev/null 2>&1; then +if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then # we have DEVFS, no worries... true +elif (/bin/mkdir /dev/.diskless 2> /dev/null); then + # if /dev is writable assume it has already been populated + # via rc.diskless1 + # + rmdir /dev/.diskless else - # extract a list of device entries, then copy them to a writable fs (cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp - mount_md 4096 /dev 3 512 + mount_md 4096 /dev 512 (cd /; cpio -i -H newc -d < /tmp/dev.tmp) + rm -f /tmp/dev.tmp fi + +# generate our hostname +# +if [ -z "`hostname -s`" ]; then + hostname=`/usr/bin/kenv dhcp.host-name` + hostname $hostname + echo "Hostname is $hostname" +fi + +# if the info is available via dhcp/kenv +# build the resolv.conf +# +if [ ! -e /etc/resolv.conf ]; then + echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf + + set `/usr/bin/kenv dhcp.domain-name-servers` + for ns in `IFS=','; echo $*`; do + echo nameserver $ns >> /etc/resolv.conf; + done +fi + diff --git a/etc/rc.initdiskless b/etc/rc.initdiskless index faa2acb..5ddc768 100644 --- a/etc/rc.initdiskless +++ b/etc/rc.initdiskless @@ -26,24 +26,61 @@ # # $FreeBSD$ # - # PROVIDE: initdiskless # KEYWORD: FreeBSD -dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` -[ ${dlv:=0} -eq 0 ] && exit 0 - + +# On entry to this script the entire system consists of a read-only root +# mounted via NFS. We use the contents of /conf to create and populate +# memory filesystems. The kernel has run BOOTP and configured an interface +# (otherwise it would not have been able to mount the NFS root!) +# +# The following directories are scanned. Each sucessive directory overrides +# (is merged into) the previous one. +# +# /conf/base universal base +# /conf/default modified by a secondary universal base +# /conf/${ipba} modified based on the assigned broadcast IP +# /conf/${ip} modified based on the machine's assigned IP +# +# Each of these directories may contain any number of subdirectories which +# represent directories in / on the diskless machine. The existance of +# these subdirectories causes this script to create a MEMORY FILESYSTEM for +# /<sub_directory_name>. For example, if /conf/base/etc exists then a +# memory filesystem will be created for /etc. +# +# If a subdirectory contains the file 'diskless_remount' the contents of +# the file is used to remount the subdirectory prior to it being copied to +# the memory filesystem. For example, if /conf/base/etc/diskless_remount +# contains the string 'my.server.com:/etc' then my.server.com:/etc will be +# mounted in place of the subdirectory. This allows you to avoid making +# duplicates of system directories in /conf. # -# BOOTP has mounted / for us. Assume a read-only mount. We must then -# - figure out our IP by querying the interface -# - mount /etc as an MFS -# - populate /etc from /conf/default version -# - override files in /etc with files from /conf/*/etc where -# '*' is default, netmask of client, ip-address of client +# If a subdirectory contains the file 'md_size', the contents of the +# file is used to determine the size of the memory filesystem, in 512 +# byte sectors. The default is 8192 (4MB). You only have to specify an +# md_size if the default doesn't work for you (i.e. if it is too big or +# too small). Note that in -current the default is 4096 (2MB). For +# example, /conf/base/etc/md_size might contain '16384'. # -# The operator is in charge of setting /conf/*/etc/* things as appropriate. -# Typically rc.conf and fstab need to be changed, but possibly also other -# files such as inetd.conf etc. +# If /conf/<special_dir>/SUBDIR.cpio.gz exists, the file is cpio'd into +# the specified /SUBDIR (and a memory filesystem is created for /SUBDIR +# if necessary). +# +# If /conf/<special_dir>/SUBDIR.remove exists, the file contains a list +# of paths which are rm -rf'd relative to /SUBDIR. +# +# You will almost universally want to create a /conf/base/etc containing +# a diskless_remount and possibly an md_size file. You will then almost +# universally want to override rc.conf, rc.local, and fstab by creating +# /conf/default/etc/{rc.conf,rc.local,fstab}. Your fstab should be sure +# to mount a /usr... typically an NFS readonly /usr. +# +# NOTE! rc.diskless2 will create /var, /tmp, and /dev. Those filesystems +# should not be specified in /conf. At least not yet. + +dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` +[ ${dlv:=0} -eq 0 ] && exit 0 # chkerr: # @@ -52,22 +89,37 @@ dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` # checks error code and drops into shell on failure. # if shell exits, terminates script as well as /etc/rc. # -chkerr() -{ - case $1 in - 0) - ;; - *) - echo "$2 failed: dropping into /bin/sh" - /bin/sh - # RESUME - ;; - esac +chkerr() { + case $1 in + 0) + ;; + *) + echo "$2 failed: dropping into /bin/sh" + /bin/sh + # RESUME + ;; + esac } -mount_md() -{ - /sbin/mdmfs -i 4096 -s $1 -M md$3 $2 +# Create a generic memory disk +# +mount_md() { + /sbin/mdmfs -i 4096 -s $1 -M md $2 +} + +# Create the memory filesystem if it has not already been created +# +create_md() { + if [ "x`eval echo \\$md_created_$1`" = "x" ]; then + if [ "x`eval echo \$md_size_$1`" = "x" ]; then + md_size=4096 + else + md_size=`eval echo \\$md_size_$1` + fi + mount_md $md_size /$1 + /bin/chmod 755 /$1 + eval md_created_$1=created + fi } # DEBUGGING @@ -81,62 +133,91 @@ bootp_ipa="" bootp_ipbca="" iflist=`ifconfig -l` for i in ${iflist} ; do - set `ifconfig ${i}` - while [ $# -ge 1 ] ; do - if [ "${bootp_ifc}" = "" -a "$1" = "inet" ]; then - bootp_ifc=${i} ; bootp_ipa=${2} ; shift - fi - if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ]; then - bootp_ipbca=$2; shift - fi - shift - done - if [ "${bootp_ifc}" != "" ]; then - break - fi + set `ifconfig ${i}` + while [ $# -ge 1 ] ; do + if [ "${bootp_ifc}" = "" -a "$1" = "inet" ] ; then + bootp_ifc=${i} ; bootp_ipa=${2} ; shift + fi + if [ "${bootp_ipbca}" = "" -a "$1" = "broadcast" ] ; then + bootp_ipbca=$2; shift + fi + shift + done + if [ "${bootp_ifc}" != "" ] ; then + break + fi done echo "Interface ${bootp_ifc} IP-Address ${bootp_ipa} Broadcast ${bootp_ipbca}" -if [ -z "`hostname -s`" ]; then - hostname=`kenv dhcp.host-name` - hostname $hostname - echo "Hostname is $hostname" -fi - -if [ -d /conf/default/etc ]; then - mount_md 4096 /etc 0 - chkerr $? "MFS mount on /etc" - /bin/chmod 755 /etc - - /bin/cp -Rp /conf/default/etc/* /etc - chkerr $? "cp /conf/default/etc to /etc MFS" -fi - -# Allow for override files to replace files in /etc. Use /conf/*/etc to find -# the override files. First choice is default files that # always override, -# then files that from the directory that matches the client's broadcast -# address, finally followed by overrides that match the client's IP address. +# Resolve templates in /conf/base, /conf/default, /conf/${bootp_ipbca}, +# and /conf/${bootp_ipa}. For each subdirectory found within these +# directories: +# +# - calculate memory filesystem sizes. If the subdirectory (prior to +# NFS remounting) contains the file 'md_size', the contents specified +# in 512 byte sectors will be used to size the memory filesystem. Otherwise +# 8192 sectors (4MB) is used. # -# This way we have some flexibility to handle clusters of machines on -# separate subnets. +# - handle NFS remounts. If the subdirectory contains the file +# diskless_remount, the contents of the file is NFS mounted over +# the directory. For example /conf/base/etc/diskless_remount +# might contain 'myserver:/etc'. NFS remounts allow you to avoid +# having to dup your system directories in /conf. Your server must +# be sure to export those filesystems -alldirs, however. +# +for i in base default ${bootp_ipbca} ${bootp_ipa} ; do + for j in /conf/$i/* ; do + # memory filesystem size specification + # + subdir=${j##*/} + if [ -d $j -a -f $j/md_size ]; then + eval md_size_$subdir=`cat $j/md_size` + fi -for i in ${bootp_ipbca} ${bootp_ipa} ${hostname} ; do - if [ -d /conf/${i}/etc ]; then - cp -Rp /conf/${i}/etc/* /etc + # NFS remount + # + if [ -d $j -a -f $j/diskless_remount ]; then + nfspt=`/bin/cat $j/diskless_remount` + mount_nfs $nfspt $j + chkerr $? "mount_nfs $nfspt $j" fi + done done +# - Create all required MFS filesystems and populate them from +# our templates. Support both a direct template and a dir.cpio.gz +# archive. Support dir.remove files containing a list of relative +# paths to remove. # -# if the info is available via dhcp/kenv -# build the resolv.conf -# -if [ ! -e /etc/resolv.conf ]; then - echo domain `kenv dhcp.domain-name` > /etc/resolv.conf +# TODO: +# + find a way to assign a 'group' identifier to a machine +# so we can use group-specific configurations; - set `kenv dhcp.domain-name-servers` - for ns in `IFS=','; echo $*`; do - echo nameserver $ns >> /etc/resolv.conf; - done -fi +for i in base default ${bootp_ipbca} ${bootp_ipa} ; do + for j in /conf/$i/* ; do + subdir=${j##*/} + if [ -d $j ]; then + create_md $subdir + cp -Rp $j/* /$subdir + fi + done + for j in /conf/$i/*.cpio.gz ; do + subdir=${j%*.cpio.gz} + subdir=${subdir##*/} + if [ -f $j ]; then + create_md $subdir + echo "Loading /$subdir from cpio archive $j" + (cd / ; /stand/gzip -d < $j | /stand/cpio --extract -d ) + fi + done + for j in /conf/$i/*.remove ; do + subdir=${j%*.remove} + subdir=${subdir##*/} + if [ -f $j ]; then + # doubly sure it is a memory disk before rm -rf'ing + create_md $subdir + (cd /$subdir; rm -rf `/bin/cat $j`) + fi + done +done -exit 2 # Tell /etc/rc to re-source rc.conf |
