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authordimitri staessens <dimitri.staessens@intec.ugent.be>2016-10-30 22:33:17 +0100
committerdimitri staessens <dimitri.staessens@intec.ugent.be>2016-10-31 07:54:59 +0100
commit4fb81107bfad2fe4cbea00cb87e1b6fbb92bd869 (patch)
treefbe9e6a85b9165334744647a3d7fd17b2459cbee /src
parent05fa4879dd8c70156fd98eabed4634098b0feecb (diff)
downloadouroboros-4fb81107bfad2fe4cbea00cb87e1b6fbb92bd869.tar.gz
ouroboros-4fb81107bfad2fe4cbea00cb87e1b6fbb92bd869.zip
ipcpd: Clean shutdown when bootstrap fails
Fixes a double free (conf->dif_name) and the handling of non-created threads when the bootstrap of an IPCP fails
Diffstat (limited to 'src')
-rw-r--r--src/ipcpd/ipcp.c6
-rw-r--r--src/ipcpd/local/main.c18
-rw-r--r--src/ipcpd/shim-eth-llc/main.c24
-rw-r--r--src/ipcpd/shim-udp/main.c26
4 files changed, 46 insertions, 28 deletions
diff --git a/src/ipcpd/ipcp.c b/src/ipcpd/ipcp.c
index 694db7cf..b7eff3fb 100644
--- a/src/ipcpd/ipcp.c
+++ b/src/ipcpd/ipcp.c
@@ -234,7 +234,8 @@ void * ipcp_main_loop(void * o)
int fd = -1;
pthread_rwlock_rdlock(&ipcpi.state_lock);
- if (ipcp_get_state() == IPCP_SHUTDOWN) {
+ if (ipcp_get_state() == IPCP_SHUTDOWN
+ || ipcp_get_state() == IPCP_NULL) {
pthread_rwlock_unlock(&ipcpi.state_lock);
break;
}
@@ -281,7 +282,8 @@ void * ipcp_main_loop(void * o)
if (conf_msg->ipcp_type == IPCP_NORMAL) {
conf.addr_size = conf_msg->addr_size;
conf.cep_id_size = conf_msg->cep_id_size;
- conf.pdu_length_size = conf_msg->pdu_length_size;
+ conf.pdu_length_size =
+ conf_msg->pdu_length_size;
conf.qos_id_size = conf_msg->qos_id_size;
conf.seqno_size = conf_msg->seqno_size;
conf.has_ttl = conf_msg->has_ttl;
diff --git a/src/ipcpd/local/main.c b/src/ipcpd/local/main.c
index 412795ec..643d088d 100644
--- a/src/ipcpd/local/main.c
+++ b/src/ipcpd/local/main.c
@@ -140,7 +140,11 @@ void ipcp_sig_handler(int sig, siginfo_t * info, void * c)
pthread_rwlock_wrlock(&ipcpi.state_lock);
- ipcp_set_state(IPCP_SHUTDOWN);
+ if (ipcp_get_state() == IPCP_INIT)
+ ipcp_set_state(IPCP_NULL);
+
+ if (ipcp_get_state() == IPCP_ENROLLED)
+ ipcp_set_state(IPCP_SHUTDOWN);
pthread_rwlock_unlock(&ipcpi.state_lock);
}
@@ -154,9 +158,6 @@ static int ipcp_local_bootstrap(struct dif_config * conf)
assert(conf);
assert(conf->type == THIS_TYPE);
- /* this IPCP doesn't need to maintain its dif_name */
- free(conf->dif_name);
-
pthread_rwlock_wrlock(&ipcpi.state_lock);
if (ipcp_get_state() != IPCP_INIT) {
@@ -165,6 +166,9 @@ static int ipcp_local_bootstrap(struct dif_config * conf)
return -1;
}
+ /* this IPCP doesn't need to maintain its dif_name */
+ free(conf->dif_name);
+
ipcp_set_state(IPCP_ENROLLED);
pthread_create(&local_data.sduloop, NULL, ipcp_local_sdu_loop, NULL);
@@ -382,8 +386,10 @@ int main(int argc, char * argv[])
ipcp_fini();
- pthread_cancel(local_data.sduloop);
- pthread_join(local_data.sduloop, NULL);
+ if (ipcp_get_state() == IPCP_SHUTDOWN) {
+ pthread_cancel(local_data.sduloop);
+ pthread_join(local_data.sduloop, NULL);
+ }
local_data_fini();
diff --git a/src/ipcpd/shim-eth-llc/main.c b/src/ipcpd/shim-eth-llc/main.c
index b7b9f783..6dcd07ef 100644
--- a/src/ipcpd/shim-eth-llc/main.c
+++ b/src/ipcpd/shim-eth-llc/main.c
@@ -673,7 +673,11 @@ void ipcp_sig_handler(int sig, siginfo_t * info, void * c)
pthread_rwlock_wrlock(&ipcpi.state_lock);
- ipcp_set_state(IPCP_SHUTDOWN);
+ if (ipcp_get_state() == IPCP_INIT)
+ ipcp_set_state(IPCP_NULL);
+
+ if (ipcp_get_state() == IPCP_ENROLLED)
+ ipcp_set_state(IPCP_SHUTDOWN);
pthread_rwlock_unlock(&ipcpi.state_lock);
}
@@ -702,9 +706,6 @@ static int eth_llc_ipcp_bootstrap(struct dif_config * conf)
assert(conf);
assert(conf->type == THIS_TYPE);
- /* this IPCP doesn't need to maintain its dif_name */
- free(conf->dif_name);
-
if (conf->if_name == NULL) {
LOG_ERR("Interface name is NULL.");
return -1;
@@ -831,7 +832,6 @@ static int eth_llc_ipcp_bootstrap(struct dif_config * conf)
if (ipcp_get_state() != IPCP_INIT) {
pthread_rwlock_unlock(&ipcpi.state_lock);
LOG_ERR("IPCP in wrong state.");
- close(skfd);
return -1;
}
@@ -855,6 +855,9 @@ static int eth_llc_ipcp_bootstrap(struct dif_config * conf)
pthread_rwlock_unlock(&ipcpi.state_lock);
+ /* this IPCP doesn't need to maintain its dif_name */
+ free(conf->dif_name);
+
LOG_DBG("Bootstrapped shim IPCP over Ethernet with LLC with api %d.",
getpid());
@@ -1135,11 +1138,12 @@ int main(int argc, char * argv[])
ipcp_fini();
- pthread_cancel(eth_llc_data.sdu_reader);
- pthread_cancel(eth_llc_data.sdu_writer);
-
- pthread_join(eth_llc_data.sdu_writer, NULL);
- pthread_join(eth_llc_data.sdu_reader, NULL);
+ if (ipcp_get_state() == IPCP_SHUTDOWN) {
+ pthread_cancel(eth_llc_data.sdu_reader);
+ pthread_cancel(eth_llc_data.sdu_writer);
+ pthread_join(eth_llc_data.sdu_writer, NULL);
+ pthread_join(eth_llc_data.sdu_reader, NULL);
+ }
eth_llc_data_fini();
diff --git a/src/ipcpd/shim-udp/main.c b/src/ipcpd/shim-udp/main.c
index c90b47a2..159176ea 100644
--- a/src/ipcpd/shim-udp/main.c
+++ b/src/ipcpd/shim-udp/main.c
@@ -519,7 +519,11 @@ void ipcp_sig_handler(int sig, siginfo_t * info, void * c)
if (info->si_pid == irmd_api) {
pthread_rwlock_wrlock(&ipcpi.state_lock);
- ipcp_set_state(IPCP_SHUTDOWN);
+ if (ipcp_get_state() == IPCP_INIT)
+ ipcp_set_state(IPCP_NULL);
+
+ if (ipcp_get_state() == IPCP_ENROLLED)
+ ipcp_set_state(IPCP_SHUTDOWN);
pthread_rwlock_unlock(&ipcpi.state_lock);
}
@@ -539,9 +543,6 @@ static int ipcp_udp_bootstrap(struct dif_config * conf)
assert(conf);
assert(conf->type == THIS_TYPE);
- /* this IPCP doesn't need to maintain its dif_name */
- free(conf->dif_name);
-
if (inet_ntop(AF_INET,
&conf->ip_addr,
ipstr,
@@ -624,6 +625,9 @@ static int ipcp_udp_bootstrap(struct dif_config * conf)
pthread_rwlock_unlock(&ipcpi.state_lock);
+ /* this IPCP doesn't need to maintain its dif_name */
+ free(conf->dif_name);
+
LOG_DBG("Bootstrapped shim IPCP over UDP with api %d.", getpid());
LOG_DBG("Bound to IP address %s.", ipstr);
LOG_DBG("DNS server address is %s.", dnsstr);
@@ -1197,13 +1201,15 @@ int main(int argc, char * argv[])
ipcp_fini();
- pthread_cancel(udp_data.handler);
- pthread_cancel(udp_data.sdu_reader);
- pthread_cancel(udp_data.sduloop);
- pthread_join(udp_data.sduloop, NULL);
- pthread_join(udp_data.handler, NULL);
- pthread_join(udp_data.sdu_reader, NULL);
+ if (ipcp_get_state() == IPCP_SHUTDOWN) {
+ pthread_cancel(udp_data.handler);
+ pthread_cancel(udp_data.sdu_reader);
+ pthread_cancel(udp_data.sduloop);
+ pthread_join(udp_data.sduloop, NULL);
+ pthread_join(udp_data.handler, NULL);
+ pthread_join(udp_data.sdu_reader, NULL);
+ }
udp_data_fini();