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# vim: set filetype=sh :
# file: /usr/share/bootcd/bootcd-usage.lib
# copyright: Bernd Schumacher <bernd.schumacher@hpe.com> (2001-2020)
# license: GNU General Public License, version 3
# description: bootcd-usage.lib - functions needed by bootcd scripts
check_OBSOLETE()
{
local i
local c
local OBSOLETE
local problem
OBSOLETE="BLANKING CDSCSI CDSPEED FLOPPY_CREATE_DEV ISO_ONLY NOT_TO_RAM FASTBOOT DEVFS"
for c in $CONF; do
problem="is set in $c, but is obsolete.
It will be ignored."
for i in $OBSOLETE; do
[ "$(set | grep ^$i=)" ] && warn "$i $problem"
done
done
return 0
}
# check_commandline_function <functionname>
# check and enable a function defined from commandline
check_commandline_function()
{
# 1. program myprog is called with commandline function myfun()
# myprog --myfun "myfun() {...}"
#
# a) bootcdconf.lib:initopts_myprog()
# unset -f myfun
# myfun="" # contains myfun source code
# b) bootcdconf.lib:readopts_myprog()
# case "$1" in
# --myfun) ... myfun="$2"
# c) bootcd-usage.lib:checkopts_myprog()
# check_commandline_function myfun
eval "\
if [ \"\$$1\" ]; then
if [ \"\$(echo \"\$$1\" | grep \"^\s*$1\s*()\s*$\")\" ]; then
eval \"\$$1\"
else
ia_logerr \"$1 does not have a line <$1()> ($1=<\$$1>)\"; return 105
fi
[ \"\$(type \"$1\" | head -1 | grep \"function\")\" ] || \
{ ia_logerr \"function: $1 could not be created ($1=<\$$1>)\"; return 106; }
unset $1 # delete variable with function source code
fi\
"
}
checkopts_bootcdmk2diskconf()
{
MOUNTGREP='grep -e "^/dev/" -e "^LABEL=" -e "^UUID=" | \
grep -v -e "\<noauto\>" -e "\<auto\>" -e "\<swap\>" -e \
"\<devpts\>" -e "\<sysfs\>" -e "\<tmpfs\>" -e "\<proc\>"' # only grep filesystems from fstab
}
checkopts_bootcdwrite()
{
check_OBSOLETE
[ "$(whoami)" = "root" ] || { ia_logerr "Please run as root"; return 101; }
SRCDI="$SRCDISK"; [ "$SRCDI" = "/" ] && SRCDI=""
add_SRCDI_to_variables
CHANGES=$VAR/changes
[ ! "$(echo " $ia_opts " | grep " -s ")" ] || yes="-s"
check_commandline_function "extra_changes"
}
checkopts_bootcd2disk()
{
check_OBSOLETE
[ "$(whoami)" = "root" ] || { ia_logerr "Please run as root"; return 103; }
[ ! "$(echo " $ia_opts " | grep " -s ")" ] || yes="-s"
[ ! "$only_copydata" ] || [ "$COPYDEST" ] || \
{ ia_logerr "with Option --only_copydata COPYDEST must not be empty"; return 109; }
check_commandline_function "do_first"
check_commandline_function "after_copy"
check_commandline_function "do_last"
}
# print_only_if_exists <var>
print_only_if_exists()
{
eval "[ ! \"\${$1+x}\" ] || echo \"$1=<\${$1}>\""
}
# print_bootcd_vars [<program> ...}
print_bootcd_vars()
{
local programs all i j
[ "$*" ] && programs="$*" || programs="bootcdwriteconf bootcd2diskconf bootcd2disk bootcdwrite"
all="$(for i in $( for p in $programs; do echo $(list_$p); done ); do
echo "$i"; done | sort -u)"
for i in $all; do
if [ "$(echo "$i" | grep "#$")" ]; then
i="$(echo "$i" | sed "s/#$//")"
for j in $(seq 0 99 | sed "s/^/$i/"); do
print_only_if_exists "$j"
done
elif [ "$(echo "$i" | grep "()$")" ]; then
i="$(echo "$i" | sed "s/()$//")"
[ "$(typefun $i)" ] && type $i
else
print_only_if_exists "$i"
fi
done
return 0
}
# Set config variables from different sources.
# The later overwrites the previous.
# The sources and order is:
# 1. defaults resulting from command name $0
# 2. values from config files
# 3. options from command line
read_opts()
{
local i
local cfg
local help
local unknown_opt
local missing_opt
CONF=""
CMD="$(basename $0)"
i="bootcdwrite bootcdflopcp bootcd2disk bootcdmk2diskconf"
[ "$(echo " $i " | grep " $CMD ")" ] || { ia_logerr "Please do not run as $CMD (try $i)"; return 102; }
initopts_$CMD # ignore env
if [ "$(echo " bootcdwrite " | grep " $CMD ")" ]; then
defaults_bootcdwrite
elif [ "$(echo " bootcd2disk " | grep " $CMD ")" ]; then
defaults_bootcd2disk
elif [ "$(echo " bootcdmk2diskconf " | grep " $CMD ")" ]; then
defaults_bootcdmk2diskconf
fi
readopts_$CMD "$@" # cmdline may set CONF
if [ "$help" ]; then
ia_logerr "$(usage_$CMD)"; return 100
elif [ "$unknown_opt" ]; then
ia_logerr "Unknown option: $unknown_opt" ; return 104
elif [ "$missing_opt" ]; then
ia_logerr "Missing argument for option: $missing_opt"; return 107
fi
for i in ${CONF:-}; do
cfg="$(find_bootcd_file $i)"
if [ "$cfg" ]; then
dbg "read_opts: sourcing cfg=<$cfg>"
. "$cfg"
else
ia_logerr "No CONF=<$i> found."; return 108
fi
done
readopts_$CMD "$@" || return # cmdline over conf
checkopts_$CMD || return
dbglog "read_opts: <$(print_bootcd_vars)>"
}
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