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netfilter: xtables: add const qualifiers

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This should make it easier to remove redundant arguments later.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
This commit is contained in:
Jan Engelhardt
2009-06-26 07:51:59 +02:00
parent 739674fb7f
commit d5d1baa15f
4 changed files with 168 additions and 136 deletions
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59
net/bridge/netfilter/ebtables.c
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@@ -82,7 +82,8 @@ static inline int ebt_do_match (struct ebt_entry_match *m,
return m->u.match->match(skb, par) ? EBT_MATCH : EBT_NOMATCH;
}
static inline int ebt_dev_check(char *entry, const struct net_device *device)
static inline int
ebt_dev_check(const char *entry, const struct net_device *device)
{
int i = 0;
const char *devname;
@@ -100,8 +101,9 @@ static inline int ebt_dev_check(char *entry, const struct net_device *device)
#define FWINV2(bool,invflg) ((bool) ^ !!(e->invflags & invflg))
/* process standard matches */
static inline int ebt_basic_match(struct ebt_entry *e, struct ethhdr *h,
const struct net_device *in, const struct net_device *out)
static inline int
ebt_basic_match(const struct ebt_entry *e, const struct ethhdr *h,
const struct net_device *in, const struct net_device *out)
{
int verdict, i;
@@ -156,12 +158,12 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
int i, nentries;
struct ebt_entry *point;
struct ebt_counter *counter_base, *cb_base;
struct ebt_entry_target *t;
const struct ebt_entry_target *t;
int verdict, sp = 0;
struct ebt_chainstack *cs;
struct ebt_entries *chaininfo;
char *base;
struct ebt_table_info *private;
const char *base;
const struct ebt_table_info *private;
bool hotdrop = false;
struct xt_match_param mtpar;
struct xt_target_param tgpar;
@@ -395,7 +397,7 @@ ebt_check_watcher(struct ebt_entry_watcher *w, struct xt_tgchk_param *par,
return 0;
}
static int ebt_verify_pointers(struct ebt_replace *repl,
static int ebt_verify_pointers(const struct ebt_replace *repl,
struct ebt_table_info *newinfo)
{
unsigned int limit = repl->entries_size;
@@ -466,8 +468,8 @@ static int ebt_verify_pointers(struct ebt_replace *repl,
* to parse the userspace data
*/
static inline int
ebt_check_entry_size_and_hooks(struct ebt_entry *e,
struct ebt_table_info *newinfo,
ebt_check_entry_size_and_hooks(const struct ebt_entry *e,
const struct ebt_table_info *newinfo,
unsigned int *n, unsigned int *cnt,
unsigned int *totalcnt, unsigned int *udc_cnt)
{
@@ -622,9 +624,8 @@ ebt_cleanup_entry(struct ebt_entry *e, struct net *net, unsigned int *cnt)
}
static inline int
ebt_check_entry(struct ebt_entry *e,
struct net *net,
struct ebt_table_info *newinfo,
ebt_check_entry(struct ebt_entry *e, struct net *net,
const struct ebt_table_info *newinfo,
const char *name, unsigned int *cnt,
struct ebt_cl_stack *cl_s, unsigned int udc_cnt)
{
@@ -743,12 +744,12 @@ cleanup_matches:
* the hook mask for udc tells us from which base chains the udc can be
* accessed. This mask is a parameter to the check() functions of the extensions
*/
static int check_chainloops(struct ebt_entries *chain, struct ebt_cl_stack *cl_s,
static int check_chainloops(const struct ebt_entries *chain, struct ebt_cl_stack *cl_s,
unsigned int udc_cnt, unsigned int hooknr, char *base)
{
int i, chain_nr = -1, pos = 0, nentries = chain->nentries, verdict;
struct ebt_entry *e = (struct ebt_entry *)chain->data;
struct ebt_entry_target *t;
const struct ebt_entry *e = (struct ebt_entry *)chain->data;
const struct ebt_entry_target *t;
while (pos < nentries || chain_nr != -1) {
/* end of udc, go back one 'recursion' step */
@@ -814,7 +815,7 @@ letscontinue:
}
/* do the parsing of the table/chains/entries/matches/watchers/targets, heh */
static int translate_table(struct net *net, char *name,
static int translate_table(struct net *net, const char *name,
struct ebt_table_info *newinfo)
{
unsigned int i, j, k, udc_cnt;
@@ -934,7 +935,7 @@ static int translate_table(struct net *net, char *name,
}
/* called under write_lock */
static void get_counters(struct ebt_counter *oldcounters,
static void get_counters(const struct ebt_counter *oldcounters,
struct ebt_counter *counters, unsigned int nentries)
{
int i, cpu;
@@ -957,7 +958,8 @@ static void get_counters(struct ebt_counter *oldcounters,
}
/* replace the table */
static int do_replace(struct net *net, void __user *user, unsigned int len)
static int do_replace(struct net *net, const void __user *user,
unsigned int len)
{
int ret, i, countersize;
struct ebt_table_info *newinfo;
@@ -1237,7 +1239,8 @@ void ebt_unregister_table(struct net *net, struct ebt_table *table)
}
/* userspace just supplied us with counters */
static int update_counters(struct net *net, void __user *user, unsigned int len)
static int update_counters(struct net *net, const void __user *user,
unsigned int len)
{
int i, ret;
struct ebt_counter *tmp;
@@ -1292,8 +1295,8 @@ free_tmp:
return ret;
}
static inline int ebt_make_matchname(struct ebt_entry_match *m,
char *base, char __user *ubase)
static inline int ebt_make_matchname(const struct ebt_entry_match *m,
const char *base, char __user *ubase)
{
char __user *hlp = ubase + ((char *)m - base);
if (copy_to_user(hlp, m->u.match->name, EBT_FUNCTION_MAXNAMELEN))
@@ -1301,8 +1304,8 @@ static inline int ebt_make_matchname(struct ebt_entry_match *m,
return 0;
}
static inline int ebt_make_watchername(struct ebt_entry_watcher *w,
char *base, char __user *ubase)
static inline int ebt_make_watchername(const struct ebt_entry_watcher *w,
const char *base, char __user *ubase)
{
char __user *hlp = ubase + ((char *)w - base);
if (copy_to_user(hlp , w->u.watcher->name, EBT_FUNCTION_MAXNAMELEN))
@@ -1310,11 +1313,12 @@ static inline int ebt_make_watchername(struct ebt_entry_watcher *w,
return 0;
}
static inline int ebt_make_names(struct ebt_entry *e, char *base, char __user *ubase)
static inline int
ebt_make_names(struct ebt_entry *e, const char *base, char __user *ubase)
{
int ret;
char __user *hlp;
struct ebt_entry_target *t;
const struct ebt_entry_target *t;
if (e->bitmask == 0)
return 0;
@@ -1335,10 +1339,11 @@ static inline int ebt_make_names(struct ebt_entry *e, char *base, char __user *u
/* called with ebt_mutex locked */
static int copy_everything_to_user(struct ebt_table *t, void __user *user,
int *len, int cmd)
const int *len, int cmd)
{
struct ebt_replace tmp;
struct ebt_counter *counterstmp, *oldcounters;
struct ebt_counter *counterstmp;
const struct ebt_counter *oldcounters;
unsigned int entries_size, nentries;
char *entries;