Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxx>
---
include/xtables.h.in | 3 +++
xtoptions.c | 5 +++++
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/include/xtables.h.in b/include/xtables.h.in
index 91a6eaa..14d7b04 100644
--- a/include/xtables.h.in
+++ b/include/xtables.h.in
@@ -76,6 +76,8 @@ enum xt_option_flags {
* @flags: bitmask of option flags, see %XTOPT_*
* @ptroff: offset into private structure for member
* @size: size of the item pointed to by @ptroff; this is a safeguard
+ * @min: lowest allowed value (for singular integral types)
+ * @max: highest allowed value (for singular integral types)
*/
struct xt_option_entry {
const char *name;
@@ -83,6 +85,7 @@ struct xt_option_entry {
unsigned int id, excl, also, flags;
unsigned int ptroff;
size_t size;
+ unsigned int min, max;
};
/**
diff --git a/xtoptions.c b/xtoptions.c
index 843395b..6a119ec 100644
--- a/xtoptions.c
+++ b/xtoptions.c
@@ -89,6 +89,11 @@ static void xtopt_parse_int(struct xt_option_call *cb)
unsigned int lmin = 0, lmax = UINT32_MAX;
unsigned int value;
+ if (cb->entry->min != 0)
+ lmin = cb->entry->min;
+ if (cb->entry->max != 0)
+ lmax = cb->entry->max;
+
if (!xtables_strtoui(cb->arg, NULL, &value, lmin, lmax))
xt_params->exit_err(PARAMETER_PROBLEM,
"%s: bad value for option \"--%s\", "
--
1.7.1
--
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