From 864cae4970dede0db5e6d64de9ea4209e970a06e Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 7 Jul 2009 03:44:31 +0000
Subject: [PATCH] wprobe: fix some endianness fail in the l2 filter code
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16732 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
package/wprobe/src/kernel/wprobe-core.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/package/wprobe/src/kernel/wprobe-core.c b/package/wprobe/src/kernel/wprobe-core.c
index d8f5a16f6..f9dd282d5 100644
--- a/package/wprobe/src/kernel/wprobe-core.c
+++ b/package/wprobe/src/kernel/wprobe-core.c
@@ -844,6 +844,7 @@ wprobe_check_filter(void *data, int datalen, int gs)
hdr->name[31] = 0;
cur_is = be32_to_cpu(hdr->n_items);
+ hdr->n_items = cur_is;
is += cur_is;
for (j = 0; j < cur_is; j++) {
struct sock_filter *sf;
@@ -854,11 +855,13 @@ wprobe_check_filter(void *data, int datalen, int gs)
if (data > end)
goto overrun;
- if (hdr->n_items > 1024)
+ hdr->name[31] = 0;
+ n_items = be32_to_cpu(hdr->n_items);
+ hdr->n_items = n_items;
+
+ if (n_items > 1024)
goto overrun;
- hdr->name[31] = 0;
- hdr->n_items = n_items = be32_to_cpu(hdr->n_items);
sf = data;
if (n_items > 0) {
for (k = 0; k < n_items; k++) {
@@ -968,7 +971,7 @@ wprobe_set_filter(struct wprobe_iface *dev, void *data, int len)
for (j = 0; j < g->n_items; j++) {
hdr = data;
f->items[cur_is++] = data;
- data += sizeof(*hdr) + be32_to_cpu(hdr->n_items) * sizeof(struct sock_filter);
+ data += sizeof(*hdr) + hdr->n_items * sizeof(struct sock_filter);
}
}
rcu_assign_pointer(dev->active_filter, f);
--
2.20.1