[NETFILTER]: x_tables: switch xt_match->match to bool
Switch the return type of match functions to boolean
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 13c66a7..31f42e8 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -96,7 +96,7 @@
}
/* Returns whether matches rule or not. */
-static inline int
+static inline bool
ip6_packet_match(const struct sk_buff *skb,
const char *indev,
const char *outdev,
@@ -122,7 +122,7 @@
dprintf("DST: %u. Mask: %u. Target: %u.%s\n", ip->daddr,
ipinfo->dmsk.s_addr, ipinfo->dst.s_addr,
ipinfo->invflags & IP6T_INV_DSTIP ? " (INV)" : "");*/
- return 0;
+ return false;
}
/* Look for ifname matches; this should unroll nicely. */
@@ -136,7 +136,7 @@
dprintf("VIA in mismatch (%s vs %s).%s\n",
indev, ip6info->iniface,
ip6info->invflags&IP6T_INV_VIA_IN ?" (INV)":"");
- return 0;
+ return false;
}
for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) {
@@ -149,7 +149,7 @@
dprintf("VIA out mismatch (%s vs %s).%s\n",
outdev, ip6info->outiface,
ip6info->invflags&IP6T_INV_VIA_OUT ?" (INV)":"");
- return 0;
+ return false;
}
/* ... might want to do something with class and flowlabel here ... */
@@ -163,7 +163,7 @@
if (protohdr < 0) {
if (_frag_off == 0)
*hotdrop = true;
- return 0;
+ return false;
}
*fragoff = _frag_off;
@@ -174,17 +174,17 @@
if (ip6info->proto == protohdr) {
if(ip6info->invflags & IP6T_INV_PROTO) {
- return 0;
+ return false;
}
- return 1;
+ return true;
}
/* We need match for the '-p all', too! */
if ((ip6info->proto != 0) &&
!(ip6info->invflags & IP6T_INV_PROTO))
- return 0;
+ return false;
}
- return 1;
+ return true;
}
/* should be ip6 safe */
@@ -219,20 +219,20 @@
}
static inline
-int do_match(struct ip6t_entry_match *m,
- const struct sk_buff *skb,
- const struct net_device *in,
- const struct net_device *out,
- int offset,
- unsigned int protoff,
- bool *hotdrop)
+bool do_match(struct ip6t_entry_match *m,
+ const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ int offset,
+ unsigned int protoff,
+ bool *hotdrop)
{
/* Stop iteration if it doesn't match */
if (!m->u.kernel.match->match(skb, in, out, m->u.kernel.match, m->data,
offset, protoff, hotdrop))
- return 1;
+ return true;
else
- return 0;
+ return false;
}
static inline struct ip6t_entry *
@@ -1291,7 +1291,7 @@
^ invert;
}
-static int
+static bool
icmp6_match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -1306,7 +1306,7 @@
/* Must not be a fragment. */
if (offset)
- return 0;
+ return false;
ic = skb_header_pointer(skb, protoff, sizeof(_icmp), &_icmp);
if (ic == NULL) {
@@ -1314,7 +1314,7 @@
can't. Hence, no choice but to drop. */
duprintf("Dropping evil ICMP tinygram.\n");
*hotdrop = true;
- return 0;
+ return false;
}
return icmp6_type_code_match(icmpinfo->type,
diff --git a/net/ipv6/netfilter/ip6t_ah.c b/net/ipv6/netfilter/ip6t_ah.c
index 27b7bd2..607c2eb 100644
--- a/net/ipv6/netfilter/ip6t_ah.c
+++ b/net/ipv6/netfilter/ip6t_ah.c
@@ -30,10 +30,10 @@
#endif
/* Returns 1 if the spi is matched by the range, 0 otherwise */
-static inline int
-spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, int invert)
+static inline bool
+spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, bool invert)
{
- int r=0;
+ bool r;
DEBUGP("ah spi_match:%c 0x%x <= 0x%x <= 0x%x",invert? '!':' ',
min,spi,max);
r = (spi >= min && spi <= max) ^ invert;
@@ -41,7 +41,7 @@
return r;
}
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -61,13 +61,13 @@
if (err < 0) {
if (err != -ENOENT)
*hotdrop = true;
- return 0;
+ return false;
}
ah = skb_header_pointer(skb, ptr, sizeof(_ah), &_ah);
if (ah == NULL) {
*hotdrop = true;
- return 0;
+ return false;
}
hdrlen = (ah->hdrlen + 2) << 2;
diff --git a/net/ipv6/netfilter/ip6t_eui64.c b/net/ipv6/netfilter/ip6t_eui64.c
index 69e79e1..bebb12a 100644
--- a/net/ipv6/netfilter/ip6t_eui64.c
+++ b/net/ipv6/netfilter/ip6t_eui64.c
@@ -19,7 +19,7 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Andras Kis-Szabo <kisza@sch.bme.hu>");
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -36,7 +36,7 @@
(skb_mac_header(skb) + ETH_HLEN) <= skb->data) &&
offset != 0) {
*hotdrop = true;
- return 0;
+ return false;
}
memset(eui64, 0, sizeof(eui64));
@@ -55,11 +55,11 @@
i++;
if (i == 8)
- return 1;
+ return true;
}
}
- return 0;
+ return false;
}
static struct xt_match eui64_match = {
diff --git a/net/ipv6/netfilter/ip6t_frag.c b/net/ipv6/netfilter/ip6t_frag.c
index 740fdca..0ed5fbc 100644
--- a/net/ipv6/netfilter/ip6t_frag.c
+++ b/net/ipv6/netfilter/ip6t_frag.c
@@ -29,10 +29,10 @@
#endif
/* Returns 1 if the id is matched by the range, 0 otherwise */
-static inline int
-id_match(u_int32_t min, u_int32_t max, u_int32_t id, int invert)
+static inline bool
+id_match(u_int32_t min, u_int32_t max, u_int32_t id, bool invert)
{
- int r = 0;
+ bool r;
DEBUGP("frag id_match:%c 0x%x <= 0x%x <= 0x%x", invert ? '!' : ' ',
min, id, max);
r = (id >= min && id <= max) ^ invert;
@@ -40,7 +40,7 @@
return r;
}
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -59,13 +59,13 @@
if (err < 0) {
if (err != -ENOENT)
*hotdrop = true;
- return 0;
+ return false;
}
fh = skb_header_pointer(skb, ptr, sizeof(_frag), &_frag);
if (fh == NULL) {
*hotdrop = true;
- return 0;
+ return false;
}
DEBUGP("INFO %04X ", fh->frag_off);
diff --git a/net/ipv6/netfilter/ip6t_hbh.c b/net/ipv6/netfilter/ip6t_hbh.c
index 5633de1..4b05393 100644
--- a/net/ipv6/netfilter/ip6t_hbh.c
+++ b/net/ipv6/netfilter/ip6t_hbh.c
@@ -47,7 +47,7 @@
* 5 -> RTALERT 2 x x
*/
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -62,7 +62,7 @@
unsigned int temp;
unsigned int ptr;
unsigned int hdrlen = 0;
- unsigned int ret = 0;
+ bool ret = false;
u8 _opttype, *tp = NULL;
u8 _optlen, *lp = NULL;
unsigned int optlen;
@@ -72,19 +72,19 @@
if (err < 0) {
if (err != -ENOENT)
*hotdrop = true;
- return 0;
+ return false;
}
oh = skb_header_pointer(skb, ptr, sizeof(_optsh), &_optsh);
if (oh == NULL) {
*hotdrop = true;
- return 0;
+ return false;
}
hdrlen = ipv6_optlen(oh);
if (skb->len - ptr < hdrlen) {
/* Packet smaller than it's length field */
- return 0;
+ return false;
}
DEBUGP("IPv6 OPTS LEN %u %u ", hdrlen, oh->hdrlen);
@@ -123,7 +123,7 @@
DEBUGP("Tbad %02X %02X\n",
*tp,
(optinfo->opts[temp] & 0xFF00) >> 8);
- return 0;
+ return false;
} else {
DEBUGP("Tok ");
}
@@ -144,7 +144,7 @@
if (spec_len != 0x00FF && spec_len != *lp) {
DEBUGP("Lbad %02X %04X\n", *lp,
spec_len);
- return 0;
+ return false;
}
DEBUGP("Lok ");
optlen = *lp + 2;
@@ -167,10 +167,10 @@
if (temp == optinfo->optsnr)
return ret;
else
- return 0;
+ return false;
}
- return 0;
+ return false;
}
/* Called when user tries to insert an entry of this type. */
diff --git a/net/ipv6/netfilter/ip6t_hl.c b/net/ipv6/netfilter/ip6t_hl.c
index cbf49cf..b933e84 100644
--- a/net/ipv6/netfilter/ip6t_hl.c
+++ b/net/ipv6/netfilter/ip6t_hl.c
@@ -19,10 +19,10 @@
MODULE_DESCRIPTION("IP tables Hop Limit matching module");
MODULE_LICENSE("GPL");
-static int match(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)
+static bool match(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)
{
const struct ip6t_hl_info *info = matchinfo;
const struct ipv6hdr *ip6h = ipv6_hdr(skb);
@@ -43,10 +43,10 @@
default:
printk(KERN_WARNING "ip6t_hl: unknown mode %d\n",
info->mode);
- return 0;
+ return false;
}
- return 0;
+ return false;
}
static struct xt_match hl_match = {
diff --git a/net/ipv6/netfilter/ip6t_ipv6header.c b/net/ipv6/netfilter/ip6t_ipv6header.c
index 469dec2..3222e89 100644
--- a/net/ipv6/netfilter/ip6t_ipv6header.c
+++ b/net/ipv6/netfilter/ip6t_ipv6header.c
@@ -26,7 +26,7 @@
MODULE_DESCRIPTION("IPv6 headers match");
MODULE_AUTHOR("Andras Kis-Szabo <kisza@sch.bme.hu>");
-static int
+static bool
ipv6header_match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -58,7 +58,7 @@
/* Is there enough space for the next ext header? */
if (len < (int)sizeof(struct ipv6_opt_hdr))
- return 0;
+ return false;
/* No more exthdr -> evaluate */
if (nexthdr == NEXTHDR_NONE) {
temp |= MASK_NONE;
@@ -99,7 +99,7 @@
temp |= MASK_DSTOPTS;
break;
default:
- return 0;
+ return false;
break;
}
diff --git a/net/ipv6/netfilter/ip6t_mh.c b/net/ipv6/netfilter/ip6t_mh.c
index c27647b..ddffe03 100644
--- a/net/ipv6/netfilter/ip6t_mh.c
+++ b/net/ipv6/netfilter/ip6t_mh.c
@@ -31,16 +31,13 @@
#endif
/* Returns 1 if the type is matched by the range, 0 otherwise */
-static inline int
-type_match(u_int8_t min, u_int8_t max, u_int8_t type, int invert)
+static inline bool
+type_match(u_int8_t min, u_int8_t max, u_int8_t type, bool invert)
{
- int ret;
-
- ret = (type >= min && type <= max) ^ invert;
- return ret;
+ return (type >= min && type <= max) ^ invert;
}
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -55,7 +52,7 @@
/* Must not be a fragment. */
if (offset)
- return 0;
+ return false;
mh = skb_header_pointer(skb, protoff, sizeof(_mh), &_mh);
if (mh == NULL) {
@@ -63,14 +60,14 @@
can't. Hence, no choice but to drop. */
duprintf("Dropping evil MH tinygram.\n");
*hotdrop = true;
- return 0;
+ return false;
}
if (mh->ip6mh_proto != IPPROTO_NONE) {
duprintf("Dropping invalid MH Payload Proto: %u\n",
mh->ip6mh_proto);
*hotdrop = true;
- return 0;
+ return false;
}
return type_match(mhinfo->types[0], mhinfo->types[1], mh->ip6mh_type,
diff --git a/net/ipv6/netfilter/ip6t_owner.c b/net/ipv6/netfilter/ip6t_owner.c
index f90f7c3..cadd0a6 100644
--- a/net/ipv6/netfilter/ip6t_owner.c
+++ b/net/ipv6/netfilter/ip6t_owner.c
@@ -23,7 +23,7 @@
MODULE_LICENSE("GPL");
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -36,21 +36,21 @@
const struct ip6t_owner_info *info = matchinfo;
if (!skb->sk || !skb->sk->sk_socket || !skb->sk->sk_socket->file)
- return 0;
+ return false;
if (info->match & IP6T_OWNER_UID) {
if ((skb->sk->sk_socket->file->f_uid != info->uid) ^
!!(info->invert & IP6T_OWNER_UID))
- return 0;
+ return false;
}
if (info->match & IP6T_OWNER_GID) {
if ((skb->sk->sk_socket->file->f_gid != info->gid) ^
!!(info->invert & IP6T_OWNER_GID))
- return 0;
+ return false;
}
- return 1;
+ return true;
}
static int
diff --git a/net/ipv6/netfilter/ip6t_rt.c b/net/ipv6/netfilter/ip6t_rt.c
index 2bb8821..7966f4a 100644
--- a/net/ipv6/netfilter/ip6t_rt.c
+++ b/net/ipv6/netfilter/ip6t_rt.c
@@ -31,10 +31,10 @@
#endif
/* Returns 1 if the id is matched by the range, 0 otherwise */
-static inline int
-segsleft_match(u_int32_t min, u_int32_t max, u_int32_t id, int invert)
+static inline bool
+segsleft_match(u_int32_t min, u_int32_t max, u_int32_t id, bool invert)
{
- int r = 0;
+ bool r;
DEBUGP("rt segsleft_match:%c 0x%x <= 0x%x <= 0x%x",
invert ? '!' : ' ', min, id, max);
r = (id >= min && id <= max) ^ invert;
@@ -42,7 +42,7 @@
return r;
}
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@@ -57,7 +57,7 @@
unsigned int temp;
unsigned int ptr;
unsigned int hdrlen = 0;
- unsigned int ret = 0;
+ bool ret = false;
struct in6_addr *ap, _addr;
int err;
@@ -65,19 +65,19 @@
if (err < 0) {
if (err != -ENOENT)
*hotdrop = true;
- return 0;
+ return false;
}
rh = skb_header_pointer(skb, ptr, sizeof(_route), &_route);
if (rh == NULL) {
*hotdrop = true;
- return 0;
+ return false;
}
hdrlen = ipv6_optlen(rh);
if (skb->len - ptr < hdrlen) {
/* Pcket smaller than its length field */
- return 0;
+ return false;
}
DEBUGP("IPv6 RT LEN %u %u ", hdrlen, rh->hdrlen);
@@ -136,7 +136,7 @@
DEBUGP("Not strict ");
if (rtinfo->addrnr > (unsigned int)((hdrlen - 8) / 16)) {
DEBUGP("There isn't enough space\n");
- return 0;
+ return false;
} else {
unsigned int i = 0;
@@ -164,13 +164,13 @@
if (i == rtinfo->addrnr)
return ret;
else
- return 0;
+ return false;
}
} else {
DEBUGP("Strict ");
if (rtinfo->addrnr > (unsigned int)((hdrlen - 8) / 16)) {
DEBUGP("There isn't enough space\n");
- return 0;
+ return false;
} else {
DEBUGP("#%d ", rtinfo->addrnr);
for (temp = 0; temp < rtinfo->addrnr; temp++) {
@@ -190,11 +190,11 @@
(temp == (unsigned int)((hdrlen - 8) / 16)))
return ret;
else
- return 0;
+ return false;
}
}
- return 0;
+ return false;
}
/* Called when user tries to insert an entry of this type. */