include, lib: Report communication failure with the IRMd

An errno EIRMD has been added to errno.h to indicate failure to send a
message tot the IRMd. The IRM tool will report such errors, which
makes it easier for users to detect that the IRM was not started or
has failed.

2 files changed, 23 insertions, 44 deletions

diff --git a/src/lib/dev.c b/src/lib/dev.c
index 8eb98506..3a1df16d 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -176,7 +176,7 @@ static int api_announce(char * ap_name)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL) {
-                return -1;
+                return -EIRMD;
         }
 
         if (!recv_msg->has_result || (ret = recv_msg->result)) {
@@ -359,7 +359,7 @@ int flow_accept(char ** ae_name, qosspec_t * qos)
 
         recv_msg = send_recv_irm_msg_b(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (!recv_msg->has_api || !recv_msg->has_port_id) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -465,7 +465,7 @@ int flow_alloc_resp(int fd, int response)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (!recv_msg->has_result) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -476,16 +476,6 @@ int flow_alloc_resp(int fd, int response)
 
         irm_msg__free_unpacked(recv_msg, NULL);
 
-        if (response) {
-                pthread_rwlock_rdlock(&ai.data_lock);
-                pthread_rwlock_wrlock(&ai.flows_lock);
-
-                reset_flow(fd);
-
-                pthread_rwlock_unlock(&ai.flows_lock);
-                pthread_rwlock_unlock(&ai.data_lock);
-        }
-
         return ret;
 }
 
@@ -517,7 +507,7 @@ int flow_alloc(char * dst_name, char * src_ae_name, qosspec_t * qos)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (!recv_msg->has_api || !recv_msg->has_port_id) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -603,27 +593,17 @@ int flow_alloc_res(int fd)
 
         recv_msg = send_recv_irm_msg_b(&msg);
         if (recv_msg == NULL)
-                result = -1;
+                return -EIRMD;
 
         if (!recv_msg->has_result) {
                 irm_msg__free_unpacked(recv_msg, NULL);
-                result = -1;
+                return -1;
         }
 
         result = recv_msg->result;
 
         irm_msg__free_unpacked(recv_msg, NULL);
 
-        if (result) {
-                pthread_rwlock_rdlock(&ai.data_lock);
-                pthread_rwlock_wrlock(&ai.flows_lock);
-
-                reset_flow(fd);
-
-                pthread_rwlock_unlock(&ai.flows_lock);
-                pthread_rwlock_unlock(&ai.data_lock);
-        }
-
         return result;
 }
 
@@ -655,9 +635,9 @@ int flow_dealloc(int fd)
         pthread_rwlock_unlock(&ai.flows_lock);
         pthread_rwlock_unlock(&ai.data_lock);
 
-        recv_msg = send_recv_irm_msg_b(&msg);
+        recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (!recv_msg->has_result) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -1208,7 +1188,7 @@ int ipcp_create_r(pid_t api)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -1254,7 +1234,7 @@ int ipcp_flow_req_arr(pid_t  api, char * dst_name, char * src_ae_name)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (!recv_msg->has_port_id || !recv_msg->has_api) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -1336,7 +1316,7 @@ int ipcp_flow_alloc_reply(int fd, int response)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
diff --git a/src/lib/irm.c b/src/lib/irm.c
index 0d9d0f86..969a78c3 100644
--- a/src/lib/irm.c
+++ b/src/lib/irm.c
@@ -47,7 +47,7 @@ pid_t irm_create_ipcp(char *         name,
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -75,7 +75,7 @@ int irm_destroy_ipcp(pid_t api)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -147,9 +147,8 @@ int irm_bootstrap_ipcp(pid_t               api,
         }
 
         recv_msg = send_recv_irm_msg(&msg);
-        if (recv_msg == NULL) {
-                return -1;
-        }
+        if (recv_msg == NULL)
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -179,7 +178,7 @@ ssize_t irm_list_ipcps(char *   name,
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL) {
                 free(msg.dif_name);
-                return -1;
+                return -EIRMD;
         }
 
         if (recv_msg->apis == NULL) {
@@ -227,7 +226,7 @@ int irm_enroll_ipcp(pid_t  api,
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL) {
                 free(msg.dif_name);
-                return -1;
+                return -EIRMD;
         }
 
         if (recv_msg->has_result == false) {
@@ -362,7 +361,7 @@ int irm_bind_ap(char *   ap,
         free(full_ap_name);
 
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -391,7 +390,7 @@ int irm_bind_api(pid_t api, char * name)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -419,7 +418,7 @@ int irm_unbind_ap(char * ap, char * name)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -448,7 +447,7 @@ int irm_unbind_api(pid_t api, char * name)
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -481,7 +480,7 @@ int irm_reg(char *   name,
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -515,7 +514,7 @@ int irm_unreg(char *   name,
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
-                return -1;
+                return -EIRMD;
 
         if (recv_msg->has_result == false) {
                 irm_msg__free_unpacked(recv_msg, NULL);