For cmdline argument with numeric value, add a new function getargnum
It will get proper value with default value as $1, max value as $2.
valid result will be echo to stdout, for nul or value not valid it will just
echo the default value.
Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
---
modules.d/99base/dracut-lib.sh | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
--- dracut.orig/modules.d/99base/dracut-lib.sh
+++ dracut/modules.d/99base/dracut-lib.sh
@@ -167,6 +167,25 @@ getargbool() {
return 0
}
+# getargnum <defaultval> <maxval> <args...>
+# Will echo the arg if it's in range [0 - maxval].
+# If it's not set or it's not valid, will set it <defaultval>.
+getargnum() {
+ local _b
+ unset _b
+ local _default
+ local _max
+ _default=$1; shift
+ _max=$1; shift
+ _b=$(getarg "$@")
+ [ $? -ne 0 -a -z "$_b" ] && _b=$_default
+ if [ -n "$_b" ]; then
+ [[ "$_b" =~ ^[0-9]+$ ]] && _b=$(($_b)) && \
+ [[ $_b -ge 0 && $_b -le $_max ]] && echo $_b && return
+ fi
+ echo $_default
+}
+
_dogetargs() {
debug_off
local _o _found _key
--
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