netfilter: xtables: constify args in compat copying functions

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

3 files changed, 8 insertions, 8 deletions

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 12503199826f..69c56287d518 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -485,8 +485,8 @@ int xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
 }
 EXPORT_SYMBOL_GPL(xt_compat_match_from_user);
 
-int xt_compat_match_to_user(struct xt_entry_match *m, void __user **dstptr,
-                            unsigned int *size)
+int xt_compat_match_to_user(const struct xt_entry_match *m,
+                            void __user **dstptr, unsigned int *size)
 {
         const struct xt_match *match = m->u.kernel.match;
         struct compat_xt_entry_match __user *cm = *dstptr;
@@ -588,8 +588,8 @@ void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,
 }
 EXPORT_SYMBOL_GPL(xt_compat_target_from_user);
 
-int xt_compat_target_to_user(struct xt_entry_target *t, void __user **dstptr,
-                             unsigned int *size)
+int xt_compat_target_to_user(const struct xt_entry_target *t,
+                             void __user **dstptr, unsigned int *size)
 {
         const struct xt_target *target = t->u.kernel.target;
         struct compat_xt_entry_target __user *ct = *dstptr;
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 017c95966aa8..e47fb805ffb4 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -775,7 +775,7 @@ struct compat_xt_hashlimit_info {
         compat_uptr_t master;
 };
 
-static void hashlimit_mt_compat_from_user(void *dst, void *src)
+static void hashlimit_mt_compat_from_user(void *dst, const void *src)
 {
         int off = offsetof(struct compat_xt_hashlimit_info, hinfo);
 
@@ -783,7 +783,7 @@ static void hashlimit_mt_compat_from_user(void *dst, void *src)
         memset(dst + off, 0, sizeof(struct compat_xt_hashlimit_info) - off);
 }
 
-static int hashlimit_mt_compat_to_user(void __user *dst, void *src)
+static int hashlimit_mt_compat_to_user(void __user *dst, const void *src)
 {
         int off = offsetof(struct compat_xt_hashlimit_info, hinfo);
 
diff --git a/net/netfilter/xt_limit.c b/net/netfilter/xt_limit.c
index 2773be6a71dd..a0ca5339af41 100644
--- a/net/netfilter/xt_limit.c
+++ b/net/netfilter/xt_limit.c
@@ -148,7 +148,7 @@ struct compat_xt_rateinfo {
 
 /* To keep the full "prev" timestamp, the upper 32 bits are stored in the
  * master pointer, which does not need to be preserved. */
-static void limit_mt_compat_from_user(void *dst, void *src)
+static void limit_mt_compat_from_user(void *dst, const void *src)
 {
         const struct compat_xt_rateinfo *cm = src;
         struct xt_rateinfo m = {
@@ -162,7 +162,7 @@ static void limit_mt_compat_from_user(void *dst, void *src)
         memcpy(dst, &m, sizeof(m));
 }
 
-static int limit_mt_compat_to_user(void __user *dst, void *src)
+static int limit_mt_compat_to_user(void __user *dst, const void *src)
 {
         const struct xt_rateinfo *m = src;
         struct compat_xt_rateinfo cm = {