[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>

9 files changed, 65 insertions, 65 deletions

diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index e2a893825656..b9c792dd4890 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -183,19 +183,19 @@ ipt_error(struct sk_buff **pskb,
 }
 
 static inline
-int do_match(struct ipt_entry_match *m,
-             const struct sk_buff *skb,
-             const struct net_device *in,
-             const struct net_device *out,
-             int offset,
-             bool *hotdrop)
+bool do_match(struct ipt_entry_match *m,
+              const struct sk_buff *skb,
+              const struct net_device *in,
+              const struct net_device *out,
+              int offset,
+              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, ip_hdrlen(skb), hotdrop))
-                return 1;
+                return true;
         else
-                return 0;
+                return false;
 }
 
 static inline struct ipt_entry *
@@ -2105,16 +2105,16 @@ void ipt_unregister_table(struct xt_table *table)
 }
 
 /* Returns 1 if the type and code is matched by the range, 0 otherwise */
-static inline int
+static inline bool
 icmp_type_code_match(u_int8_t test_type, u_int8_t min_code, u_int8_t max_code,
                      u_int8_t type, u_int8_t code,
-                     int invert)
+                     bool invert)
 {
         return ((test_type == 0xFF) || (type == test_type && code >= min_code && code <= max_code))
                 ^ invert;
 }
 
-static int
+static bool
 icmp_match(const struct sk_buff *skb,
            const struct net_device *in,
            const struct net_device *out,
@@ -2129,7 +2129,7 @@ icmp_match(const struct sk_buff *skb,
 
         /* Must not be a fragment. */
         if (offset)
-                return 0;
+                return false;
 
         ic = skb_header_pointer(skb, protoff, sizeof(_icmph), &_icmph);
         if (ic == NULL) {
@@ -2138,7 +2138,7 @@ icmp_match(const struct sk_buff *skb,
                  */
                 duprintf("Dropping evil ICMP tinygram.\n");
                 *hotdrop = true;
-                return 0;
+                return false;
         }
 
         return icmp_type_code_match(icmpinfo->type,
diff --git a/net/ipv4/netfilter/ipt_addrtype.c b/net/ipv4/netfilter/ipt_addrtype.c
index a9a9b750ff2d..abea446a4437 100644
--- a/net/ipv4/netfilter/ipt_addrtype.c
+++ b/net/ipv4/netfilter/ipt_addrtype.c
@@ -22,19 +22,19 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
 MODULE_DESCRIPTION("iptables addrtype match");
 
-static inline int match_type(__be32 addr, u_int16_t mask)
+static inline bool match_type(__be32 addr, u_int16_t mask)
 {
         return !!(mask & (1 << inet_addr_type(addr)));
 }
 
-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 ipt_addrtype_info *info = matchinfo;
         const struct iphdr *iph = ip_hdr(skb);
-        int ret = 1;
+        bool ret = true;
 
         if (info->source)
                 ret &= match_type(iph->saddr, info->source)^info->invert_source;
diff --git a/net/ipv4/netfilter/ipt_ah.c b/net/ipv4/netfilter/ipt_ah.c
index 9a244e406a48..3da39ee92d8b 100644
--- a/net/ipv4/netfilter/ipt_ah.c
+++ b/net/ipv4/netfilter/ipt_ah.c
@@ -25,10 +25,10 @@ MODULE_DESCRIPTION("iptables AH SPI match module");
 #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;
         duprintf("ah spi_match:%c 0x%x <= 0x%x <= 0x%x",invert? '!':' ',
                 min,spi,max);
         r=(spi >= min && spi <= max) ^ invert;
@@ -36,7 +36,7 @@ spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, int invert)
         return r;
 }
 
-static int
+static bool
 match(const struct sk_buff *skb,
       const struct net_device *in,
       const struct net_device *out,
@@ -51,7 +51,7 @@ match(const struct sk_buff *skb,
 
         /* Must not be a fragment. */
         if (offset)
-                return 0;
+                return false;
 
         ah = skb_header_pointer(skb, protoff,
                                 sizeof(_ahdr), &_ahdr);
diff --git a/net/ipv4/netfilter/ipt_ecn.c b/net/ipv4/netfilter/ipt_ecn.c
index a47f3745553b..ba3a17e0f848 100644
--- a/net/ipv4/netfilter/ipt_ecn.c
+++ b/net/ipv4/netfilter/ipt_ecn.c
@@ -22,15 +22,15 @@ MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
 MODULE_DESCRIPTION("iptables ECN matching module");
 MODULE_LICENSE("GPL");
 
-static inline int match_ip(const struct sk_buff *skb,
-                           const struct ipt_ecn_info *einfo)
+static inline bool match_ip(const struct sk_buff *skb,
+                            const struct ipt_ecn_info *einfo)
 {
         return (ip_hdr(skb)->tos & IPT_ECN_IP_MASK) == einfo->ip_ect;
 }
 
-static inline int match_tcp(const struct sk_buff *skb,
-                            const struct ipt_ecn_info *einfo,
-                            bool *hotdrop)
+static inline bool match_tcp(const struct sk_buff *skb,
+                             const struct ipt_ecn_info *einfo,
+                             bool *hotdrop)
 {
         struct tcphdr _tcph, *th;
 
@@ -40,51 +40,51 @@ static inline int match_tcp(const struct sk_buff *skb,
         th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
         if (th == NULL) {
                 *hotdrop = false;
-                return 0;
+                return false;
         }
 
         if (einfo->operation & IPT_ECN_OP_MATCH_ECE) {
                 if (einfo->invert & IPT_ECN_OP_MATCH_ECE) {
                         if (th->ece == 1)
-                                return 0;
+                                return false;
                 } else {
                         if (th->ece == 0)
-                                return 0;
+                                return false;
                 }
         }
 
         if (einfo->operation & IPT_ECN_OP_MATCH_CWR) {
                 if (einfo->invert & IPT_ECN_OP_MATCH_CWR) {
                         if (th->cwr == 1)
-                                return 0;
+                                return false;
                 } else {
                         if (th->cwr == 0)
-                                return 0;
+                                return false;
                 }
         }
 
-        return 1;
+        return true;
 }
 
-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 ipt_ecn_info *info = matchinfo;
 
         if (info->operation & IPT_ECN_OP_MATCH_IP)
                 if (!match_ip(skb, info))
-                        return 0;
+                        return false;
 
         if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR)) {
                 if (ip_hdr(skb)->protocol != IPPROTO_TCP)
-                        return 0;
+                        return false;
                 if (!match_tcp(skb, info, hotdrop))
-                        return 0;
+                        return false;
         }
 
-        return 1;
+        return true;
 }
 
 static int checkentry(const char *tablename, const void *ip_void,
diff --git a/net/ipv4/netfilter/ipt_iprange.c b/net/ipv4/netfilter/ipt_iprange.c
index 86f225c1d067..b266d98aac8c 100644
--- a/net/ipv4/netfilter/ipt_iprange.c
+++ b/net/ipv4/netfilter/ipt_iprange.c
@@ -23,7 +23,7 @@ MODULE_DESCRIPTION("iptables arbitrary IP range match module");
 #define DEBUGP(format, args...)
 #endif
 
-static int
+static bool
 match(const struct sk_buff *skb,
       const struct net_device *in,
       const struct net_device *out,
@@ -44,7 +44,7 @@ match(const struct sk_buff *skb,
                                 info->flags & IPRANGE_SRC_INV ? "(INV) " : "",
                                 NIPQUAD(info->src.min_ip),
                                 NIPQUAD(info->src.max_ip));
-                        return 0;
+                        return false;
                 }
         }
         if (info->flags & IPRANGE_DST) {
@@ -57,10 +57,10 @@ match(const struct sk_buff *skb,
                                 info->flags & IPRANGE_DST_INV ? "(INV) " : "",
                                 NIPQUAD(info->dst.min_ip),
                                 NIPQUAD(info->dst.max_ip));
-                        return 0;
+                        return false;
                 }
         }
-        return 1;
+        return true;
 }
 
 static struct xt_match iprange_match = {
diff --git a/net/ipv4/netfilter/ipt_owner.c b/net/ipv4/netfilter/ipt_owner.c
index 92be562c4aca..8f441cef5504 100644
--- a/net/ipv4/netfilter/ipt_owner.c
+++ b/net/ipv4/netfilter/ipt_owner.c
@@ -21,7 +21,7 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
 MODULE_DESCRIPTION("iptables owner match");
 
-static int
+static bool
 match(const struct sk_buff *skb,
       const struct net_device *in,
       const struct net_device *out,
@@ -34,21 +34,21 @@ match(const struct sk_buff *skb,
         const struct ipt_owner_info *info = matchinfo;
 
         if (!skb->sk || !skb->sk->sk_socket || !skb->sk->sk_socket->file)
-                return 0;
+                return false;
 
         if(info->match & IPT_OWNER_UID) {
                 if ((skb->sk->sk_socket->file->f_uid != info->uid) ^
                     !!(info->invert & IPT_OWNER_UID))
-                        return 0;
+                        return false;
         }
 
         if(info->match & IPT_OWNER_GID) {
                 if ((skb->sk->sk_socket->file->f_gid != info->gid) ^
                     !!(info->invert & IPT_OWNER_GID))
-                        return 0;
+                        return false;
         }
 
-        return 1;
+        return true;
 }
 
 static int
diff --git a/net/ipv4/netfilter/ipt_recent.c b/net/ipv4/netfilter/ipt_recent.c
index 81f1a017f311..2e513ed9b6e9 100644
--- a/net/ipv4/netfilter/ipt_recent.c
+++ b/net/ipv4/netfilter/ipt_recent.c
@@ -169,7 +169,7 @@ static void recent_table_flush(struct recent_table *t)
         }
 }
 
-static int
+static bool
 ipt_recent_match(const struct sk_buff *skb,
                  const struct net_device *in, const struct net_device *out,
                  const struct xt_match *match, const void *matchinfo,
@@ -180,7 +180,7 @@ ipt_recent_match(const struct sk_buff *skb,
         struct recent_entry *e;
         __be32 addr;
         u_int8_t ttl;
-        int ret = info->invert;
+        bool ret = info->invert;
 
         if (info->side == IPT_RECENT_DEST)
                 addr = ip_hdr(skb)->daddr;
@@ -202,15 +202,15 @@ ipt_recent_match(const struct sk_buff *skb,
                 e = recent_entry_init(t, addr, ttl);
                 if (e == NULL)
                         *hotdrop = true;
-                ret ^= 1;
+                ret = !ret;
                 goto out;
         }
 
         if (info->check_set & IPT_RECENT_SET)
-                ret ^= 1;
+                ret = !ret;
         else if (info->check_set & IPT_RECENT_REMOVE) {
                 recent_entry_remove(t, e);
-                ret ^= 1;
+                ret = !ret;
         } else if (info->check_set & (IPT_RECENT_CHECK | IPT_RECENT_UPDATE)) {
                 unsigned long t = jiffies - info->seconds * HZ;
                 unsigned int i, hits = 0;
@@ -219,7 +219,7 @@ ipt_recent_match(const struct sk_buff *skb,
                         if (info->seconds && time_after(t, e->stamps[i]))
                                 continue;
                         if (++hits >= info->hit_count) {
-                                ret ^= 1;
+                                ret = !ret;
                                 break;
                         }
                 }
diff --git a/net/ipv4/netfilter/ipt_tos.c b/net/ipv4/netfilter/ipt_tos.c
index 803ed4c35b55..67699ae46d37 100644
--- a/net/ipv4/netfilter/ipt_tos.c
+++ b/net/ipv4/netfilter/ipt_tos.c
@@ -18,7 +18,7 @@
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("iptables TOS match module");
 
-static int
+static bool
 match(const struct sk_buff *skb,
       const struct net_device *in,
       const struct net_device *out,
diff --git a/net/ipv4/netfilter/ipt_ttl.c b/net/ipv4/netfilter/ipt_ttl.c
index e7316b27d2c5..82fe4ea8ab79 100644
--- a/net/ipv4/netfilter/ipt_ttl.c
+++ b/net/ipv4/netfilter/ipt_ttl.c
@@ -18,10 +18,10 @@ MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
 MODULE_DESCRIPTION("IP tables TTL 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 ipt_ttl_info *info = matchinfo;
         const u8 ttl = ip_hdr(skb)->ttl;
@@ -42,10 +42,10 @@ static int match(const struct sk_buff *skb,
                 default:
                         printk(KERN_WARNING "ipt_ttl: unknown mode %d\n",
                                 info->mode);
-                        return 0;
+                        return false;
         }
 
-        return 0;
+        return false;
 }
 
 static struct xt_match ttl_match = {