From 3cf93c96af7adf78542d45f8a27f0e5f8704409d Mon Sep 17 00:00:00 2001
From: Jan Engelhardt <jengelh@computergmbh.de>
Date: Mon, 14 Apr 2008 09:56:05 +0200
Subject: [PATCH] [NETFILTER]: annotate xtables targets with const and remove
casts
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
net/ipv4/netfilter/ipt_CLUSTERIP.c | 12 ++++++------
net/ipv4/netfilter/ipt_ECN.c | 2 +-
net/ipv4/netfilter/ipt_LOG.c | 3 ++-
net/ipv4/netfilter/ipt_REJECT.c | 6 ++++--
net/ipv4/netfilter/ipt_recent.c | 6 +++---
net/ipv4/netfilter/nf_nat_rule.c | 4 ++--
net/ipv6/netfilter/ip6t_REJECT.c | 3 ++-
net/ipv6/netfilter/ip6t_ipv6header.c | 3 ++-
net/ipv6/netfilter/ip6t_rt.c | 3 ++-
net/netfilter/xt_CONNSECMARK.c | 2 +-
net/netfilter/xt_RATEEST.c | 2 +-
net/netfilter/xt_connlimit.c | 6 +++---
net/netfilter/xt_dccp.c | 3 ++-
net/netfilter/xt_esp.c | 3 ++-
net/netfilter/xt_multiport.c | 6 ++++--
net/netfilter/xt_policy.c | 2 +-
net/netfilter/xt_rateest.c | 4 ++--
net/netfilter/xt_sctp.c | 6 ++++--
net/netfilter/xt_tcpmss.c | 6 ++++--
net/netfilter/xt_tcpudp.c | 9 ++++++---
net/netfilter/xt_time.c | 2 +-
21 files changed, 55 insertions(+), 38 deletions(-)
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 965b08a7d738..2510d4fcdb54 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -142,7 +142,7 @@ clusterip_config_init_nodelist(struct clusterip_config *c,
}
static struct clusterip_config *
-clusterip_config_init(struct ipt_clusterip_tgt_info *i, __be32 ip,
+clusterip_config_init(const struct ipt_clusterip_tgt_info *i, __be32 ip,
struct net_device *dev)
{
struct clusterip_config *c;
@@ -416,7 +416,7 @@ clusterip_tg_check(const char *tablename, const void *e_void,
/* drop reference count of cluster config when rule is deleted */
static void clusterip_tg_destroy(const struct xt_target *target, void *targinfo)
{
- struct ipt_clusterip_tgt_info *cipinfo = targinfo;
+ const struct ipt_clusterip_tgt_info *cipinfo = targinfo;
/* if no more entries are referencing the config, remove it
* from the list and destroy the proc entry */
@@ -565,7 +565,7 @@ struct clusterip_seq_position {
static void *clusterip_seq_start(struct seq_file *s, loff_t *pos)
{
- struct proc_dir_entry *pde = s->private;
+ const struct proc_dir_entry *pde = s->private;
struct clusterip_config *c = pde->data;
unsigned int weight;
u_int32_t local_nodes;
@@ -592,7 +592,7 @@ static void *clusterip_seq_start(struct seq_file *s, loff_t *pos)
static void *clusterip_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
- struct clusterip_seq_position *idx = (struct clusterip_seq_position *)v;
+ struct clusterip_seq_position *idx = v;
*pos = ++idx->pos;
if (*pos >= idx->weight) {
@@ -611,7 +611,7 @@ static void clusterip_seq_stop(struct seq_file *s, void *v)
static int clusterip_seq_show(struct seq_file *s, void *v)
{
- struct clusterip_seq_position *idx = (struct clusterip_seq_position *)v;
+ struct clusterip_seq_position *idx = v;
if (idx->pos != 0)
seq_putc(s, ',');
@@ -667,7 +667,7 @@ static ssize_t clusterip_proc_write(struct file *file, const char __user *input,
{
#define PROC_WRITELEN 10
char buffer[PROC_WRITELEN+1];
- struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
+ const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct clusterip_config *c = pde->data;
unsigned long nodenum;
diff --git a/net/ipv4/netfilter/ipt_ECN.c b/net/ipv4/netfilter/ipt_ECN.c
index 21395bc2b27f..d60139c134ca 100644
--- a/net/ipv4/netfilter/ipt_ECN.c
+++ b/net/ipv4/netfilter/ipt_ECN.c
@@ -100,7 +100,7 @@ ecn_tg_check(const char *tablename, const void *e_void,
const struct xt_target *target, void *targinfo,
unsigned int hook_mask)
{
- const struct ipt_ECN_info *einfo = (struct ipt_ECN_info *)targinfo;
+ const struct ipt_ECN_info *einfo = targinfo;
const struct ipt_entry *e = e_void;
if (einfo->operation & IPT_ECN_OP_MASK) {
diff --git a/net/ipv4/netfilter/ipt_LOG.c b/net/ipv4/netfilter/ipt_LOG.c
index c40e233e271b..0af14137137b 100644
--- a/net/ipv4/netfilter/ipt_LOG.c
+++ b/net/ipv4/netfilter/ipt_LOG.c
@@ -76,7 +76,8 @@ static void dump_packet(const struct nf_loginfo *info,
if ((logflags & IPT_LOG_IPOPT)
&& ih->ihl * 4 > sizeof(struct iphdr)) {
- unsigned char _opt[4 * 15 - sizeof(struct iphdr)], *op;
+ const unsigned char *op;
+ unsigned char _opt[4 * 15 - sizeof(struct iphdr)];
unsigned int i, optsize;
optsize = ih->ihl * 4 - sizeof(struct iphdr);
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 22606e2baa16..2639872849da 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -35,8 +35,10 @@ MODULE_DESCRIPTION("Xtables: packet \"rejection\" target for IPv4");
static void send_reset(struct sk_buff *oldskb, int hook)
{
struct sk_buff *nskb;
- struct iphdr *oiph, *niph;
- struct tcphdr _otcph, *oth, *tcph;
+ const struct iphdr *oiph;
+ struct iphdr *niph;
+ const struct tcphdr *oth;
+ struct tcphdr _otcph, *tcph;
unsigned int addr_type;
/* IP header checks: fragment. */
diff --git a/net/ipv4/netfilter/ipt_recent.c b/net/ipv4/netfilter/ipt_recent.c
index 50e06690eb5b..21cb053f5d7d 100644
--- a/net/ipv4/netfilter/ipt_recent.c
+++ b/net/ipv4/netfilter/ipt_recent.c
@@ -340,7 +340,7 @@ static void *recent_seq_start(struct seq_file *seq, loff_t *pos)
static void *recent_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct recent_iter_state *st = seq->private;
- struct recent_table *t = st->table;
+ const struct recent_table *t = st->table;
struct recent_entry *e = v;
struct list_head *head = e->list.next;
@@ -361,7 +361,7 @@ static void recent_seq_stop(struct seq_file *s, void *v)
static int recent_seq_show(struct seq_file *seq, void *v)
{
- struct recent_entry *e = v;
+ const struct recent_entry *e = v;
unsigned int i;
i = (e->index - 1) % ip_pkt_list_tot;
@@ -396,7 +396,7 @@ static int recent_seq_open(struct inode *inode, struct file *file)
static ssize_t recent_proc_write(struct file *file, const char __user *input,
size_t size, loff_t *loff)
{
- struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
+ const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct recent_table *t = pde->data;
struct recent_entry *e;
char buf[sizeof("+255.255.255.255")], *c = buf;
diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c
index e330a2974de1..ebe0c7903ae9 100644
--- a/net/ipv4/netfilter/nf_nat_rule.c
+++ b/net/ipv4/netfilter/nf_nat_rule.c
@@ -143,7 +143,7 @@ static bool ipt_snat_checkentry(const char *tablename,
void *targinfo,
unsigned int hook_mask)
{
- struct nf_nat_multi_range_compat *mr = targinfo;
+ const struct nf_nat_multi_range_compat *mr = targinfo;
/* Must be a valid range */
if (mr->rangesize != 1) {
@@ -159,7 +159,7 @@ static bool ipt_dnat_checkentry(const char *tablename,
void *targinfo,
unsigned int hook_mask)
{
- struct nf_nat_multi_range_compat *mr = targinfo;
+ const struct nf_nat_multi_range_compat *mr = targinfo;
/* Must be a valid range */
if (mr->rangesize != 1) {
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index baf829075f6f..44c8d65a2431 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -41,7 +41,8 @@ static void send_reset(struct sk_buff *oldskb)
struct tcphdr otcph, *tcph;
unsigned int otcplen, hh_len;
int tcphoff, needs_ack;
- struct ipv6hdr *oip6h = ipv6_hdr(oldskb), *ip6h;
+ const struct ipv6hdr *oip6h = ipv6_hdr(oldskb);
+ struct ipv6hdr *ip6h;
struct dst_entry *dst = NULL;
u8 proto;
struct flowi fl;
diff --git a/net/ipv6/netfilter/ip6t_ipv6header.c b/net/ipv6/netfilter/ip6t_ipv6header.c
index 3a940171f829..317a8960a757 100644
--- a/net/ipv6/netfilter/ip6t_ipv6header.c
+++ b/net/ipv6/netfilter/ip6t_ipv6header.c
@@ -49,7 +49,8 @@ ipv6header_mt6(const struct sk_buff *skb, const struct net_device *in,
temp = 0;
while (ip6t_ext_hdr(nexthdr)) {
- struct ipv6_opt_hdr _hdr, *hp;
+ const struct ipv6_opt_hdr *hp;
+ struct ipv6_opt_hdr _hdr;
int hdrlen;
/* Is there enough space for the next ext header? */
diff --git a/net/ipv6/netfilter/ip6t_rt.c b/net/ipv6/netfilter/ip6t_rt.c
index 12a9efe9886e..81aaf7aaaabf 100644
--- a/net/ipv6/netfilter/ip6t_rt.c
+++ b/net/ipv6/netfilter/ip6t_rt.c
@@ -110,7 +110,8 @@ rt_mt6(const struct sk_buff *skb, const struct net_device *in,
!!(rtinfo->invflags & IP6T_RT_INV_TYP)));
if (ret && (rtinfo->flags & IP6T_RT_RES)) {
- u_int32_t *rp, _reserved;
+ const u_int32_t *rp;
+ u_int32_t _reserved;
rp = skb_header_pointer(skb,
ptr + offsetof(struct rt0_hdr,
reserved),
diff --git a/net/netfilter/xt_CONNSECMARK.c b/net/netfilter/xt_CONNSECMARK.c
index 1faa9136195d..211189eb2b67 100644
--- a/net/netfilter/xt_CONNSECMARK.c
+++ b/net/netfilter/xt_CONNSECMARK.c
@@ -55,7 +55,7 @@ static void secmark_save(const struct sk_buff *skb)
static void secmark_restore(struct sk_buff *skb)
{
if (!skb->secmark) {
- struct nf_conn *ct;
+ const struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
ct = nf_ct_get(skb, &ctinfo);
diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c
index 24c73ba31eaa..64d6ad380293 100644
--- a/net/netfilter/xt_RATEEST.c
+++ b/net/netfilter/xt_RATEEST.c
@@ -96,7 +96,7 @@ xt_rateest_tg_checkentry(const char *tablename,
void *targinfo,
unsigned int hook_mask)
{
- struct xt_rateest_target_info *info = (void *)targinfo;
+ struct xt_rateest_target_info *info = targinfo;
struct xt_rateest *est;
struct {
struct nlattr opt;
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index 3b0111933f60..0ca9fe9da203 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -106,10 +106,10 @@ static int count_them(struct xt_connlimit_data *data,
const union nf_inet_addr *mask,
const struct xt_match *match)
{
- struct nf_conntrack_tuple_hash *found;
+ const struct nf_conntrack_tuple_hash *found;
struct xt_connlimit_conn *conn;
struct xt_connlimit_conn *tmp;
- struct nf_conn *found_ct;
+ const struct nf_conn *found_ct;
struct list_head *hash;
bool addit = true;
int matches = 0;
@@ -256,7 +256,7 @@ connlimit_mt_check(const char *tablename, const void *ip,
static void
connlimit_mt_destroy(const struct xt_match *match, void *matchinfo)
{
- struct xt_connlimit_info *info = matchinfo;
+ const struct xt_connlimit_info *info = matchinfo;
struct xt_connlimit_conn *conn;
struct xt_connlimit_conn *tmp;
struct list_head *hash = info->data->iphash;
diff --git a/net/netfilter/xt_dccp.c b/net/netfilter/xt_dccp.c
index 667f45e72cd9..8b6522186d9f 100644
--- a/net/netfilter/xt_dccp.c
+++ b/net/netfilter/xt_dccp.c
@@ -98,7 +98,8 @@ dccp_mt(const struct sk_buff *skb, const struct net_device *in,
const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)
{
const struct xt_dccp_info *info = matchinfo;
- struct dccp_hdr _dh, *dh;
+ const struct dccp_hdr *dh;
+ struct dccp_hdr _dh;
if (offset)
return false;
diff --git a/net/netfilter/xt_esp.c b/net/netfilter/xt_esp.c
index 71c7c3785266..a133eb9b23e1 100644
--- a/net/netfilter/xt_esp.c
+++ b/net/netfilter/xt_esp.c
@@ -47,7 +47,8 @@ esp_mt(const struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, const struct xt_match *match,
const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)
{
- struct ip_esp_hdr _esp, *eh;
+ const struct ip_esp_hdr *eh;
+ struct ip_esp_hdr _esp;
const struct xt_esp *espinfo = matchinfo;
/* Must not be a fragment. */
diff --git a/net/netfilter/xt_multiport.c b/net/netfilter/xt_multiport.c
index 31daa8192422..fd88c489b70e 100644
--- a/net/netfilter/xt_multiport.c
+++ b/net/netfilter/xt_multiport.c
@@ -100,7 +100,8 @@ multiport_mt_v0(const struct sk_buff *skb, const struct net_device *in,
const void *matchinfo, int offset, unsigned int protoff,
bool *hotdrop)
{
- __be16 _ports[2], *pptr;
+ const __be16 *pptr;
+ __be16 _ports[2];
const struct xt_multiport *multiinfo = matchinfo;
if (offset)
@@ -126,7 +127,8 @@ multiport_mt(const struct sk_buff *skb, const struct net_device *in,
const void *matchinfo, int offset, unsigned int protoff,
bool *hotdrop)
{
- __be16 _ports[2], *pptr;
+ const __be16 *pptr;
+ __be16 _ports[2];
const struct xt_multiport_v1 *multiinfo = matchinfo;
if (offset)
diff --git a/net/netfilter/xt_policy.c b/net/netfilter/xt_policy.c
index 9e918add2282..d351582b2a3d 100644
--- a/net/netfilter/xt_policy.c
+++ b/net/netfilter/xt_policy.c
@@ -136,7 +136,7 @@ policy_mt_check(const char *tablename, const void *ip_void,
const struct xt_match *match, void *matchinfo,
unsigned int hook_mask)
{
- struct xt_policy_info *info = matchinfo;
+ const struct xt_policy_info *info = matchinfo;
if (!(info->flags & (XT_POLICY_MATCH_IN|XT_POLICY_MATCH_OUT))) {
printk(KERN_ERR "xt_policy: neither incoming nor "
diff --git a/net/netfilter/xt_rateest.c b/net/netfilter/xt_rateest.c
index fdb86a515146..ebd84f1b4f62 100644
--- a/net/netfilter/xt_rateest.c
+++ b/net/netfilter/xt_rateest.c
@@ -86,7 +86,7 @@ static bool xt_rateest_mt_checkentry(const char *tablename,
void *matchinfo,
unsigned int hook_mask)
{
- struct xt_rateest_match_info *info = (void *)matchinfo;
+ struct xt_rateest_match_info *info = matchinfo;
struct xt_rateest *est1, *est2;
if (hweight32(info->flags & (XT_RATEEST_MATCH_ABS |
@@ -130,7 +130,7 @@ static bool xt_rateest_mt_checkentry(const char *tablename,
static void xt_rateest_mt_destroy(const struct xt_match *match,
void *matchinfo)
{
- struct xt_rateest_match_info *info = (void *)matchinfo;
+ struct xt_rateest_match_info *info = matchinfo;
xt_rateest_put(info->est1);
if (info->est2)
diff --git a/net/netfilter/xt_sctp.c b/net/netfilter/xt_sctp.c
index b718ec64333d..e6e4681fa047 100644
--- a/net/netfilter/xt_sctp.c
+++ b/net/netfilter/xt_sctp.c
@@ -46,7 +46,8 @@ match_packet(const struct sk_buff *skb,
bool *hotdrop)
{
u_int32_t chunkmapcopy[256 / sizeof (u_int32_t)];
- sctp_chunkhdr_t _sch, *sch;
+ const sctp_chunkhdr_t *sch;
+ sctp_chunkhdr_t _sch;
int chunk_match_type = info->chunk_match_type;
const struct xt_sctp_flag_info *flag_info = info->flag_info;
int flag_count = info->flag_count;
@@ -121,7 +122,8 @@ sctp_mt(const struct sk_buff *skb, const struct net_device *in,
const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)
{
const struct xt_sctp_info *info = matchinfo;
- sctp_sctphdr_t _sh, *sh;
+ const sctp_sctphdr_t *sh;
+ sctp_sctphdr_t _sh;
if (offset) {
duprintf("Dropping non-first fragment.. FIXME\n");
diff --git a/net/netfilter/xt_tcpmss.c b/net/netfilter/xt_tcpmss.c
index d7a5b27fe81e..6771bf01275b 100644
--- a/net/netfilter/xt_tcpmss.c
+++ b/net/netfilter/xt_tcpmss.c
@@ -31,9 +31,11 @@ tcpmss_mt(const struct sk_buff *skb, const struct net_device *in,
bool *hotdrop)
{
const struct xt_tcpmss_match_info *info = matchinfo;
- struct tcphdr _tcph, *th;
+ const struct tcphdr *th;
+ struct tcphdr _tcph;
/* tcp.doff is only 4 bits, ie. max 15 * 4 bytes */
- u8 _opt[15 * 4 - sizeof(_tcph)], *op;
+ const u_int8_t *op;
+ u8 _opt[15 * 4 - sizeof(_tcph)];
unsigned int i, optlen;
/* If we don't have the whole header, drop packet. */
diff --git a/net/netfilter/xt_tcpudp.c b/net/netfilter/xt_tcpudp.c
index 4fa3b669f691..951b06b8d701 100644
--- a/net/netfilter/xt_tcpudp.c
+++ b/net/netfilter/xt_tcpudp.c
@@ -42,7 +42,8 @@ tcp_find_option(u_int8_t option,
bool *hotdrop)
{
/* tcp.doff is only 4 bits, ie. max 15 * 4 bytes */
- u_int8_t _opt[60 - sizeof(struct tcphdr)], *op;
+ const u_int8_t *op;
+ u_int8_t _opt[60 - sizeof(struct tcphdr)];
unsigned int i;
duprintf("tcp_match: finding option\n");
@@ -72,7 +73,8 @@ tcp_mt(const struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, const struct xt_match *match,
const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)
{
- struct tcphdr _tcph, *th;
+ const struct tcphdr *th;
+ struct tcphdr _tcph;
const struct xt_tcp *tcpinfo = matchinfo;
if (offset) {
@@ -144,7 +146,8 @@ udp_mt(const struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, const struct xt_match *match,
const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)
{
- struct udphdr _udph, *uh;
+ const struct udphdr *uh;
+ struct udphdr _udph;
const struct xt_udp *udpinfo = matchinfo;
/* Must not be a fragment. */
diff --git a/net/netfilter/xt_time.c b/net/netfilter/xt_time.c
index 9fa2e0824708..ed76baab4734 100644
--- a/net/netfilter/xt_time.c
+++ b/net/netfilter/xt_time.c
@@ -223,7 +223,7 @@ time_mt_check(const char *tablename, const void *ip,
const struct xt_match *match, void *matchinfo,
unsigned int hook_mask)
{
- struct xt_time_info *info = matchinfo;
+ const struct xt_time_info *info = matchinfo;
if (info->daytime_start > XT_TIME_MAX_DAYTIME ||
info->daytime_stop > XT_TIME_MAX_DAYTIME) {
--
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