readahead-fedora 2:1.5.6-5 / postinst

#!/bin/sh

set -e

if [ "$1" = triggered ]; then
    touch /.readahead_collect
    exit 0
fi

# Automatically added by dh_installinit
if [ -x "/etc/init.d/early-readahead" ]; then
	if [ ! -e "/etc/init/early-readahead.conf" ]; then
		update-rc.d early-readahead start 03 S . >/dev/null
	fi
fi
# End automatically added section
# Automatically added by dh_installinit
if [ -x "/etc/init.d/later-readahead" ]; then
	if [ ! -e "/etc/init/later-readahead.conf" ]; then
		update-rc.d later-readahead start 50 S . >/dev/null
	fi
fi
# End automatically added section
# Automatically added by dh_installinit
if [ -x "/etc/init.d/stop-readahead-fedora" ]; then
	if [ ! -e "/etc/init/stop-readahead-fedora.conf" ]; then
		update-rc.d stop-readahead-fedora start 99 2 3 4 5 . stop 20 0 1 6 . >/dev/null
	fi
fi
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/cron.daily/readahead 2:1.5.6-1 -- "$@"
# End automatically added section


# The rest of the code is only meant to be run the first time the
# package is installed
if [ "$1" != configure ] || [ "$2" ]; then
    exit 0
fi

# Trigger the collector on next boot
touch /.readahead_collect

# Bootstrap the files lists.
# It is intended to help reduce boot time even on
# the very next boot after the package is installed.

tmpdir="$(mktemp -d)"

# takes the name of a binary and writes to the misc-libs
# the libraries it uses
get_libs() {
    ldd "$1" 2>/dev/null | sed -nr 's,^[^/]+((/usr)?/lib/[^ ]+).+$,\1,;T;p' \
	    >> $tmpdir/${2:-misc-libs}
}

# is a kernel installed at all?
if [ -d /lib/modules ]; then
    kern="$(uname -r)"
    # try to find the kernel modules dir
    [ -d "/lib/modules/$kern" ] || {
	# the running kernel is not the one on the fs
	# try to find one:
	kern="$(find /lib/modules -mindepth 1 -maxdepth 1 -type d)"
	# if more than one was found, the next test will fail
    }
    if [ -d "/lib/modules/$kern/" ]; then
	# try to determine what modules are going to be loaded:
	for module in $(cut -d\  -f1 /proc/modules | tr "_" "-"); do
	    find /lib/modules/$kern/ -name "${module}.ko" -type f >> $tmpdir/mods
	done
	for t in alias dep; do
	    f="/lib/modules/$kern/modules.$t.bin"
	    [ -f "$f" ] || continue
	    echo "$f" >> $tmpdir/mods.bin
	done
    fi
fi

if [ -d /etc/rcS.d ] && [ -d /etc/rc2.d ]; then
    # init scripts, when using sysvrc:
    for rc in S 2; do
	find /etc/rc${rc}.d -maxdepth 1 -type l -name 'S*' | xargs -r -n1 readlink -m >> $tmpdir/rc${rc}
    done
    cat $tmpdir/rc? | sh -c 'while read init; do [ -f "$init" ] && echo "$init"; done' | sort -u > $tmpdir/rc
    rm $tmpdir/rc?
else
    touch $tmpdir/rc
fi

# default files
find /etc/default -type f > $tmpdir/def

if [ -d /etc/modprobe.d ]; then
    # modprobe
    find /etc/modprobe.d -name '*.conf' -type f > $tmpdir/modprobe
fi

if [ -d /etc/udev/ ]; then
    # udev rules
    find /etc/udev/rules.d/ /lib/udev/rules.d/ -type f > $tmpdir/udev
    find /etc/udev/ -maxdepth 1 -type f -name '*.conf' -o -name '*.rules' >> $tmpdir/udev
    # even more udev stuff
    find /lib/udev -maxdepth 1 -type f -perm /a+x >> $tmpdir/udev
fi

# init files
find /lib/init/ -maxdepth 1 -type f > $tmpdir/init

if [ -d /etc/acpi/events ]; then
    # not all the events are used, but the files are usually small enough
    # that it won't matter
    find /etc/acpi/events/ -type f > $tmpdir/acpi
fi

if [ -d /usr/share/dbus-1/services ] && [ -d /usr/share/dbus-1/system-services ]; then
    # dbus services
    find /usr/share/dbus-1/services/ /usr/share/dbus-1/system-services/ -type f > $tmpdir/dbus
fi

if [ -d /etc/dbus-1/system.d ]; then
    # other dbus stuff
    find /etc/dbus-1/system.d/ -type f >> $tmpdir/dbus
fi

if [ -d /etc/cron.d ]; then
    # cron.d files
    find /etc/cron.d ! -name '.*' -type f > $tmpdir/cron
fi

if [ -d /etc/network ]; then
    # network config files
    find /etc/network/ -type f > $tmpdir/net
fi

if [ -d /etc/exim4/ ]; then
    #exim4 config
    find /etc/exim4/conf.d/ -type f > $tmpdir/exim4
fi

# some config files
for cfg in hostname sysctl.conf group passwd shadow nsswitch.conf fstab \
inetd.conf crontab anacrontab services issue host.conf fonts/fonts.conf \
modules localtime ld.so.cache motd.tail resolv.conf hosts X11/xorg.conf; do
    [ -f "/etc/$cfg" ] && echo "/etc/$cfg" >> $tmpdir/misc-etc
done

if [ -f /proc/mounts ]; then
    # mount.* and fsck.* commands
    sed -nr 's,^([^ ]+ ){2}([^ ]+).+$,\2,;T;h;s/^/mount./;p;g;s/^/fsck./;p' \
	/proc/mounts | sort -u |
    while read cmd; do
	[ -x "/sbin/$cmd" ] || continue
	echo "/sbin/$cmd" >> $tmpdir/fs-bin
    done
fi

# some binaries
# TODO: automate some of the gathering of these files
for bin in dash bash Xorg udevadm modprobe cut tail xargs find mv ln \
basename grep egrep rm mkdir mknod sleep which dd sed gzip ls cat \
rmdir logsave uname start-stop-daemon mount umount swapon touch tput \
mountpoint readlink ifup chown chmod chgrp loadkeys gunzip run-parts \
lsmod df tempfile date env stat head dirname tr id sysctl X hostname \
getopt savelog ps fsck getty dmesg stty xkbcomp locale gawk mawk \
ifconfig setupcon setterm dumpkeys; do
    for p in /bin /sbin /usr/bin /usr/sbin; do
	[ -x "$p/$bin" ] && {
	    echo "$p/$bin" >> $tmpdir/misc-bin
	    get_libs "$p/$bin"
	    continue 2
	}
    done
done

# binaries that match the name of the init scripts
for init in $(cat $tmpdir/rc); do
    init="${init#/etc/init.d/}"
    for p in /bin /sbin /usr/bin /usr/sbin; do
	for suffix in '' d; do
	    bin="$p/${init}${suffix}"
	    [ -x "$bin" ] || continue
	    echo "$bin" >> $tmpdir/init-misc
	    get_libs "$bin"
	done
    done
done

# config files that match the name of the init scripts
for init in $(cat $tmpdir/rc); do
    init="${init#/etc/init.d/}"
    for suffix in '' d .conf d.conf; do
	f="/etc/${init}${suffix}"
	[ -f "$f" ] && echo "$f" >> $tmpdir/init-misc
    done
done

# get the libs used by the libs
for lib in $(sort -u $tmpdir/misc-libs); do
    get_libs "$lib" misc-libs.new
done

sort -u $tmpdir/misc-libs $tmpdir/misc-libs.new | xargs -n1 readlink -f > $tmpdir/misc-libs.unique
rm $tmpdir/misc-libs.new $tmpdir/misc-libs

tmpf_early=$(mktemp)
tmpf_later=$(mktemp)

cat $tmpdir/* > $tmpf_early

# simple way to check if /usr is in a separate partition/device/etc
if [ "$(stat -c "%d" /)" != "$(stat -c "%d" /usr/bin)" ]; then
    sed -n '\,^/usr,p' $tmpf_early > $tmpf_later
    sed -i '\,^/usr,d' $tmpf_early
fi

rm -rf $tmpdir

# install the files lists
[ -f /etc/readahead.d/custom.early ] && \
rm -f $tmpf_early || \
mv $tmpf_early /etc/readahead.d/custom.early
[ -f /etc/readahead.d/custom.later ] && \
rm -f $tmpf_later || \
mv $tmpf_later /etc/readahead.d/custom.later

# now sort them
exec /usr/share/readahead-fedora/build-lists