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-rw-r--r--iptables/nft.c80
-rw-r--r--iptables/xtables-config-parser.y10
-rw-r--r--iptables/xtables-events.c30
3 files changed, 35 insertions, 85 deletions
diff --git a/iptables/nft.c b/iptables/nft.c
index a4cea224..91e91333 100644
--- a/iptables/nft.c
+++ b/iptables/nft.c
@@ -61,10 +61,8 @@ int mnl_talk(struct nft_handle *h, struct nlmsghdr *nlh,
int ret;
char buf[MNL_SOCKET_BUFFER_SIZE];
- if (mnl_socket_sendto(h->nl, nlh, nlh->nlmsg_len) < 0) {
- perror("mnl_socket_send");
+ if (mnl_socket_sendto(h->nl, nlh, nlh->nlmsg_len) < 0)
return -1;
- }
ret = mnl_socket_recvfrom(h->nl, buf, sizeof(buf));
while (ret > 0) {
@@ -212,26 +210,21 @@ static int mnl_nft_batch_talk(struct nft_handle *h)
int err = 0;
ret = mnl_nft_socket_sendmsg(h->nl);
- if (ret == -1) {
- perror("mnl_socket_sendmsg");
+ if (ret == -1)
return -1;
- }
FD_ZERO(&readfds);
FD_SET(fd, &readfds);
/* receive and digest all the acknowledgments from the kernel. */
ret = select(fd+1, &readfds, NULL, NULL, &tv);
- if (ret == -1) {
- perror("select");
+ if (ret == -1)
return -1;
- }
+
while (ret > 0 && FD_ISSET(fd, &readfds)) {
ret = mnl_socket_recvfrom(h->nl, rcv_buf, sizeof(rcv_buf));
- if (ret == -1) {
- perror("mnl_socket_recvfrom");
+ if (ret == -1)
return -1;
- }
ret = mnl_cb_run2(rcv_buf, ret, 0, h->portid,
NULL, NULL, cb_ctl_array,
@@ -241,10 +234,9 @@ static int mnl_nft_batch_talk(struct nft_handle *h)
err = errno;
ret = select(fd+1, &readfds, NULL, NULL, &tv);
- if (ret == -1) {
- perror("select");
+ if (ret == -1)
return -1;
- }
+
FD_ZERO(&readfds);
FD_SET(fd, &readfds);
}
@@ -727,15 +719,12 @@ err:
int nft_init(struct nft_handle *h, struct builtin_table *t)
{
h->nl = mnl_socket_open(NETLINK_NETFILTER);
- if (h->nl == NULL) {
- perror("mnl_socket_open");
+ if (h->nl == NULL)
return -1;
- }
- if (mnl_socket_bind(h->nl, 0, MNL_SOCKET_AUTOPID) < 0) {
- perror("mnl_socket_bind");
+ if (mnl_socket_bind(h->nl, 0, MNL_SOCKET_AUTOPID) < 0)
return -1;
- }
+
h->portid = mnl_socket_get_portid(h->nl);
h->tables = t;
@@ -1069,15 +1058,11 @@ static int nft_chain_list_cb(const struct nlmsghdr *nlh, void *data)
struct nft_chain_list *list = data;
c = nft_chain_alloc();
- if (c == NULL) {
- perror("OOM");
+ if (c == NULL)
goto err;
- }
- if (nft_chain_nlmsg_parse(nlh, c) < 0) {
- perror("nft_rule_nlmsg_parse");
+ if (nft_chain_nlmsg_parse(nlh, c) < 0)
goto out;
- }
nft_chain_list_add_tail(c, list);
@@ -1175,15 +1160,11 @@ static int nft_rule_list_cb(const struct nlmsghdr *nlh, void *data)
struct nft_rule_list *list = data;
r = nft_rule_alloc();
- if (r == NULL) {
- perror("OOM");
+ if (r == NULL)
goto err;
- }
- if (nft_rule_nlmsg_parse(nlh, r) < 0) {
- perror("nft_rule_nlmsg_parse");
+ if (nft_rule_nlmsg_parse(nlh, r) < 0)
goto out;
- }
nft_rule_list_add_tail(r, list);
@@ -1511,15 +1492,11 @@ static int nft_table_list_cb(const struct nlmsghdr *nlh, void *data)
struct nft_table_list *list = data;
t = nft_table_alloc();
- if (t == NULL) {
- perror("OOM");
+ if (t == NULL)
goto err;
- }
- if (nft_table_nlmsg_parse(nlh, t) < 0) {
- perror("nft_rule_nlmsg_parse");
+ if (nft_table_nlmsg_parse(nlh, t) < 0)
goto out;
- }
nft_table_list_add_tail(t, list);
@@ -2309,8 +2286,6 @@ static int nft_action(struct nft_handle *h, int action)
h->batch = mnl_nft_batch_page_add(h->batch);
ret = mnl_nft_batch_talk(h);
- if (ret < 0)
- perror("mnl_nft_batch_talk:");
mnl_nlmsg_batch_reset(h->batch);
@@ -2359,33 +2334,24 @@ int nft_compatible_revision(const char *name, uint8_t rev, int opt)
name, rev, type);
nl = mnl_socket_open(NETLINK_NETFILTER);
- if (nl == NULL) {
- perror("mnl_socket_open");
+ if (nl == NULL)
return 0;
- }
- if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
- perror("mnl_socket_bind");
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0)
goto err;
- }
+
portid = mnl_socket_get_portid(nl);
- if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
- perror("mnl_socket_send");
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0)
goto err;
- }
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
- if (ret == -1) {
- perror("mnl_socket_recvfrom");
+ if (ret == -1)
goto err;
- }
ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
- if (ret == -1) {
- perror("mnl_cb_run");
+ if (ret == -1)
goto err;
- }
err:
mnl_socket_close(nl);
@@ -2598,8 +2564,6 @@ int nft_chain_zero_counters(struct nft_handle *h, const char *chain,
nft_chain_nlmsg_build_payload(nlh, c);
ret = mnl_talk(h, nlh, NULL, NULL);
- if (ret < 0)
- perror("mnl_talk:nft_chain_zero_counters");
if (chain != NULL)
break;
diff --git a/iptables/xtables-config-parser.y b/iptables/xtables-config-parser.y
index 2770a1b9..c8116c3e 100644
--- a/iptables/xtables-config-parser.y
+++ b/iptables/xtables-config-parser.y
@@ -204,10 +204,9 @@ int xtables_config_parse(char *filename, struct nft_table_list *table_list,
break;
case T_TABLE:
table = nft_table_alloc();
- if (table == NULL) {
- perror("nft_table_alloc");
+ if (table == NULL)
return -1;
- }
+
nft_table_attr_set_u32(table, NFT_TABLE_ATTR_FAMILY, family);
nft_table_attr_set(table, NFT_TABLE_ATTR_NAME, e->data);
/* This is intentionally prepending, instead of
@@ -222,10 +221,9 @@ int xtables_config_parse(char *filename, struct nft_table_list *table_list,
break;
case T_CHAIN:
chain = nft_chain_alloc();
- if (chain == NULL) {
- perror("nft_chain_alloc");
+ if (chain == NULL)
return -1;
- }
+
nft_chain_attr_set(chain, NFT_CHAIN_ATTR_TABLE,
(char *)nft_table_attr_get(table, NFT_TABLE_ATTR_NAME));
nft_chain_attr_set_u32(chain, NFT_CHAIN_ATTR_FAMILY,
diff --git a/iptables/xtables-events.c b/iptables/xtables-events.c
index 4746825e..1e0b1752 100644
--- a/iptables/xtables-events.c
+++ b/iptables/xtables-events.c
@@ -34,15 +34,11 @@ static int table_cb(const struct nlmsghdr *nlh, int type)
char buf[4096];
t = nft_table_alloc();
- if (t == NULL) {
- perror("OOM");
+ if (t == NULL)
goto err;
- }
- if (nft_table_nlmsg_parse(nlh, t) < 0) {
- perror("nft_table_nlmsg_parse");
+ if (nft_table_nlmsg_parse(nlh, t) < 0)
goto err_free;
- }
nft_table_snprintf(buf, sizeof(buf), t, NFT_OUTPUT_DEFAULT, 0);
/* FIXME: define syntax to represent table events */
@@ -65,15 +61,11 @@ static int rule_cb(const struct nlmsghdr *nlh, int type)
uint8_t family;
r = nft_rule_alloc();
- if (r == NULL) {
- perror("OOM");
+ if (r == NULL)
goto err;
- }
- if (nft_rule_nlmsg_parse(nlh, r) < 0) {
- perror("nft_rule_nlmsg_parse");
+ if (nft_rule_nlmsg_parse(nlh, r) < 0)
goto err_free;
- }
family = nft_rule_attr_get_u32(r, NFT_RULE_ATTR_FAMILY);
switch (family) {
@@ -109,15 +101,11 @@ static int chain_cb(const struct nlmsghdr *nlh, int type)
char buf[4096];
t = nft_chain_alloc();
- if (t == NULL) {
- perror("OOM");
+ if (t == NULL)
goto err;
- }
- if (nft_chain_nlmsg_parse(nlh, t) < 0) {
- perror("nft_chain_nlmsg_parse");
+ if (nft_chain_nlmsg_parse(nlh, t) < 0)
goto err_free;
- }
nft_chain_snprintf(buf, sizeof(buf), t, NFT_OUTPUT_DEFAULT, 0);
/* FIXME: define syntax to represent chain events */
@@ -198,12 +186,12 @@ int xtables_events_main(int argc, char *argv[])
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
- perror("mnl_socket_open");
+ perror("cannot open nfnetlink socket");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, (1 << (NFNLGRP_NFTABLES-1)), MNL_SOCKET_AUTOPID) < 0) {
- perror("mnl_socket_bind");
+ perror("cannot bind to nfnetlink socket");
exit(EXIT_FAILURE);
}
@@ -215,7 +203,7 @@ int xtables_events_main(int argc, char *argv[])
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
- perror("error");
+ perror("cannot receive from nfnetlink socket");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);