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#!/bin/sh
# this script makes an attempt to build a proper set of rules
# for loading the DAHDI modules and automatically running dahdi_xcfg
#
# it accepts two parameters:
# the root prefix to be used for finding/creating the files
# the list of module names being installed
#
# the process is as follows:
#
# the file can be located at /etc/modprobe.conf (combined with all
# other rules), /etc/modprobe.d/dahdi (DAHDI only) or /etc/modules.d/dahdi
# (DAHDI only)
#
# when the file is DAHDI rules only, then we don't preserve the existing
# contents of the file; the system administrator can put desired options and
# overrides in a separate file with a name that appears earlier in the sort
# order, so there is no need to edit the file produced by this script
#
# when the file is combined with all other rules, then we make a backup
# of it and remove all the old DAHDI rules we can find, replacing them with
# new ones
#
# in addition, versions of module-init-tools 3.2.0 and later
# have the ability to pass module parameters specified on the modprobe command
# line to commands in 'install' rules, thus keeping them from being lost, so
# we try to determine what version is installed and take advantage of that
toolver=`/sbin/modprobe --version 2>/dev/null| awk '{print $3}' | cut -d. -f2 | cut -d- -f1`
if [ ${toolver} -ge 2 ]; then
cmdopts=\$CMDLINE_OPTS
fi
if [ -d ${1}/etc/modprobe.d ]; then
target=${1}/etc/modprobe.d/dahdi
elif [ -d ${1}/etc/modules.d ]; then
target=${1}/etc/modules.d/dahdi
elif [ -f ${1}/etc/modprobe.conf ]; then
target=${1}/etc/modprobe.conf
combined=1
elif [ -f ${1}/etc/conf.modules ]; then
target=${1}/etc/conf.modules
combined=1
else
echo No suitable location for module rules can be found... exiting.
exit 1
fi
if [ -n "${combined}" ]; then
if [ -f ${target} ]; then
mv ${target} ${target}.bak
cat ${target}.bak | grep -v "alias char-major-250" | grep -v "alias char-major-196" > ${target}
fi
else
if [ -f ${target} ]; then
mv ${target} ${target}.bak
fi
echo "# automatically generated file; do not edit" > ${target}
fi
echo Building ${target}...
for mod in ${2}; do
if ! grep -q "install ${mod} " ${target}; then
echo "install ${mod} /sbin/modprobe --ignore-install ${mod} ${cmdopts} && /sbin/ztcfg" >> ${target}
fi
done
if [ -z "${combined}" ]; then
echo "***"
echo "*** WARNING:"
echo "*** If you had custom settings in ${target},"
echo "*** they have been moved to ${target}.bak."
echo "***"
echo "*** In the future, do not edit ${target}, but"
echo "*** instead put your changes in another file"
echo "*** in the same directory so that they will not"
echo "*** be overwritten by future DAHDI updates."
echo "***"
fi
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