xnu-792.2.4.tar.gz

[apple/xnu.git] / bsd / kern / kpi_socketfilter.c

diff --git a/bsd/kern/kpi_socketfilter.c b/bsd/kern/kpi_socketfilter.c
index 5a51895177548280b69e49ee64634efd5430fe0e..68ea45cc43d6945b5e63878c5a272b3aa9c6e3e5 100644 (file)
--- a/bsd/kern/kpi_socketfilter.c
+++ b/bsd/kern/kpi_socketfilter.c
@@ -144,17 +144,22 @@ sflt_data_in(
        const struct sockaddr   *from,
        mbuf_t                                  *data,
        mbuf_t                                  *control,
-       sflt_data_flag_t                flags)
+       sflt_data_flag_t                flags,
+       int                                             *filtered)
 {
        struct socket_filter_entry      *filter;
-       int                                                     filtered = 0;
        int                                                     error = 0;
+       int                                                     filtered_storage;
+       
+       if (filtered == NULL)
+               filtered = &filtered_storage;
+       *filtered = 0;
        
        for (filter = so->so_filt; filter && (error == 0);
                 filter = filter->sfe_next_onsocket) {
                if (filter->sfe_filter->sf_filter.sf_data_in) {
-                       if (filtered == 0) {
-                               filtered = 1;
+                       if (*filtered == 0) {
+                               *filtered = 1;
                                sflt_use(so);
                                socket_unlock(so, 0);
                        }
@@ -163,7 +168,7 @@ sflt_data_in(
                }
        }
        
-       if (filtered != 0) {
+       if (*filtered != 0) {
                socket_lock(so, 0);
                sflt_unuse(so);
        }