remote: handle EINTR error

In the case of an interrupt, try reading the data
again. This may not be the most considerate thing
to do, but it will read th data.

Author: RABijl

lib/CL/devices/remote/communication.c

@@ -319,6 +319,13 @@ connection_read_full (remote_connection_t *connection,
       res = read (connection->fd, ptr + readb, remain);
       if (res < 0)
         { /* ERROR */
+
+          /* In the case of these errors, try again. */
+          int e = errno;
+          if (e == EAGAIN || e == EWOULDBLOCK || e == EINTR)
+            continue;
+          POCL_MSG_ERR ("error reading remote data: %d (%s).\n", errno,
+                        strerror (errno));
           return -1;
         }
       if (res == 0)
@@ -350,7 +357,7 @@ connection_write_full (remote_connection_t *connection,
       if (res < 0)
         {
           int e = errno;
-          if (e == EAGAIN || e == EWOULDBLOCK)
+          if (e == EAGAIN || e == EWOULDBLOCK || e == EINTR)
             continue;
           else
             return -1;

pocld/connection.cc

@@ -68,7 +68,7 @@ ssize_t Connection::writeFull(const void *Source, size_t Bytes) {
     Res = ::write(Fd, Ptr + Written, Remaining);
     if (Res < 0) {
       int e = errno;
-      if (e == EAGAIN || e == EWOULDBLOCK)
+      if (e == EAGAIN || e == EWOULDBLOCK || e == EINTR)
         continue;
       else
         return -1;
@@ -93,7 +93,7 @@ int Connection::readFull(void *Destination, size_t Bytes) {
     res = ::read(Fd, Ptr + readb, Remain);
     if (res < 0) {
       int e = errno;
-      if (e == EAGAIN || e == EWOULDBLOCK)
+      if (e == EAGAIN || e == EWOULDBLOCK || e == EINTR)
         continue;
       else
         return -1;