Fix build warnings

fixes #6488

diff --git a/lib/base/process.cpp b/lib/base/process.cpp
index e978803d90da1422a05e32e7ad5173699e4f7dfd..40fbfba5bde2e4055474232369f5501c91f78a17 100644 (file)
--- a/lib/base/process.cpp
+++ b/lib/base/process.cpp
@@ -228,7 +228,8 @@ void Process::IOThreadProc(int tid)
 #else /* _WIN32 */
                        if (pfds[0].revents & (POLLIN | POLLHUP | POLLERR)) {
                                char buffer[512];
-                               (void)read(l_EventFDs[tid][0], buffer, sizeof(buffer));
+                               if (read(l_EventFDs[tid][0], buffer, sizeof(buffer)) < 0)
+                                       Log(LogCritical, "base", "Read from event FD failed.");
                        }
 #endif /* _WIN32 */
 
@@ -512,7 +513,8 @@ void Process::Run(const boost::function<void(const ProcessResult&)>& callback)
                (void)close(fds[0]);
                (void)close(fds[1]);
 
-               (void)nice(5);
+               if (nice(5) < 0)
+                       Log(LogWarning, "base", "Failed to renice child process.");
 
                if (icinga2_execvpe(argv[0], argv, envp) < 0) {
                        char errmsg[512];
@@ -570,7 +572,8 @@ void Process::Run(const boost::function<void(const ProcessResult&)>& callback)
 #ifdef _WIN32
        SetEvent(l_Events[tid]);
 #else /* _WIN32 */
-       (void)write(l_EventFDs[tid][1], "T", 1);
+       if (write(l_EventFDs[tid][1], "T", 1) < 0 && errno != EINTR && errno != EAGAIN)
+               Log(LogCritical, "base", "Write to event FD failed.");
 #endif /* _WIN32 */
 }