[LTP] [PATCH v2 2/3] shell: Introduce TST_TIMEOUT variable

[Petr Vorel <pvorel@suse.cz>]

Hi Li,

> > > Here as well, why we need to distinguish the float and int, is the float
> > > expression does not work for integer?
> > Because it brings awk dependency on whole library, which I'm not sure if we
> > want (awk is a must on linux distros, it's in busybox; it's missing on
> > android
> > toolsbox, but android project concentrates on syscalls, probably nobody
> > uses
> > shell tests on android). Also I'm not sure about containers, JeOS etc. (it
> > sometimes miss a basic dependency).
> > If awk dependency is ok, it'd simplify test a bit.


> But it doesn't solve the dependency issue because, if the awk is missing,
> it will still tst_brk on float $LTP_TIMEOUT_MUL at:
>     tst_test_cmds awk
No, int was handled previously in:
      if tst_is_int "$LTP_TIMEOUT_MUL"; then
> and never goes to the integer expression branch.

> So, maybe that could be as a reason to disable float support for
> $LTP_TIMEOUT_MUL?

Maybe I'm missing something, therefore explaining the intent of the code.
(int was handled in if tst_is_int "$LTP_TIMEOUT_MUL"; then):

+	local err is_float
+	if tst_is_num "$LTP_TIMEOUT_MUL"; then
		# it's int or float
+		if tst_is_int "$LTP_TIMEOUT_MUL"; then
			# it's int only
+			[ "$LTP_TIMEOUT_MUL" -ge 1 ] || err=1
+		else
            # it's float only
+			tst_test_cmds awk
+			echo | awk '{if ('"$LTP_TIMEOUT_MUL"' < 1) {exit 1}}' || err=1
+			is_float=1
+		fi
+	else
        # NaN
+		err=1
+	fi
+	if [ "$err" ]; then
+		tst_brk TCONF "LTP_TIMEOUT_MUL must be number >= 1! ($LTP_TIMEOUT_MUL)"
+	fi

Kind regards,
Petr