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authordimitri staessens <dimitri.staessens@intec.ugent.be>2016-10-26 20:42:52 +0200
committerdimitri staessens <dimitri.staessens@intec.ugent.be>2016-10-26 20:42:52 +0200
commit82cf68254614a70a22d4b1b08b5bb2ba96c9dbd7 (patch)
treea93239273714abe5e4a66bf7fd457dc831fd919b /src/ipcpd/shim-udp
parent963537079c7d5a9f9fb39355fb0e3b84a78eaa0b (diff)
downloadouroboros-82cf68254614a70a22d4b1b08b5bb2ba96c9dbd7.tar.gz
ouroboros-82cf68254614a70a22d4b1b08b5bb2ba96c9dbd7.zip
ipcpd: Fix bad lock in shim-udp
Diffstat (limited to 'src/ipcpd/shim-udp')
-rw-r--r--src/ipcpd/shim-udp/main.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/src/ipcpd/shim-udp/main.c b/src/ipcpd/shim-udp/main.c
index e4ab4fac..c90b47a2 100644
--- a/src/ipcpd/shim-udp/main.c
+++ b/src/ipcpd/shim-udp/main.c
@@ -272,6 +272,7 @@ static int ipcp_udp_port_req(struct sockaddr_in * c_saddr,
}
pthread_rwlock_rdlock(&ipcpi.state_lock);
+ pthread_rwlock_wrlock(&udp_data.flows_lock);
/* reply to IRM */
fd = ipcp_flow_req_arr(getpid(), dst_name, src_ae_name);
@@ -283,8 +284,6 @@ static int ipcp_udp_port_req(struct sockaddr_in * c_saddr,
return -1;
}
- pthread_rwlock_wrlock(&udp_data.flows_lock);
-
udp_data.uf_to_fd[skfd] = fd;
udp_data.fd_to_uf[fd].skfd = skfd;
udp_data.fd_to_uf[fd].udp = f_saddr.sin_port;
@@ -494,19 +493,16 @@ static void * ipcp_udp_sdu_loop(void * o)
pthread_rwlock_rdlock(&ipcpi.state_lock);
pthread_rwlock_rdlock(&udp_data.flows_lock);
- fd = udp_data.fd_to_uf[fd].skfd;
-
- pthread_rwlock_unlock(&udp_data.flows_lock);
- pthread_rwlock_unlock(&ipcpi.state_lock);
-
- if (send(fd,
+ if (send(udp_data.fd_to_uf[fd].skfd,
shm_du_buff_head(sdb),
shm_du_buff_tail(sdb) - shm_du_buff_head(sdb),
0) < 0)
LOG_ERR("Failed to send SDU.");
- ipcp_flow_del(sdb);
- }
+ pthread_rwlock_unlock(&udp_data.flows_lock);
+ pthread_rwlock_unlock(&ipcpi.state_lock);
+
+ ipcp_flow_del(sdb); }
}
return (void *) 1;
@@ -1119,10 +1115,13 @@ static int ipcp_udp_flow_dealloc(int fd)
clr_fd(skfd);
pthread_rwlock_unlock(&udp_data.flows_lock);
- pthread_rwlock_unlock(&ipcpi.state_lock);
+ pthread_rwlock_wrlock(&udp_data.flows_lock);
close(skfd);
+ pthread_rwlock_unlock(&udp_data.flows_lock);
+ pthread_rwlock_unlock(&ipcpi.state_lock);
+
flow_dealloc(fd);
LOG_DBG("Flow with fd %d deallocated.", fd);