write: Improve help text of --writer.

[paraslash.git] / daemon.c

diff --git a/daemon.c b/daemon.c
index 94c4a8cba6b9aae8646491f3eeddfff016914c7b..478b0f47acc94d3098cc17576599032f007b43ca 100644 (file)
--- a/daemon.c
+++ b/daemon.c
@@ -11,6 +11,7 @@
 #include <sys/types.h> /* getgrnam() */
 #include <grp.h>
 #include <signal.h>
+#include <sys/resource.h>
 
 #include "para.h"
 #include "daemon.h"
@@ -260,6 +261,21 @@ void daemon_log_welcome(const char *name)
        PARA_INFO_LOG("welcome to para_%s-" PACKAGE_VERSION " \n", name);
 }
 
+/**
+ * Renice the calling process.
+ *
+ * \param prio The priority value to set.
+ *
+ * Errors are not considered fatal, but a warning message is logged if the
+ * underlying call to setpriority(2) fails.
+ */
+void daemon_set_priority(int prio)
+{
+       if (setpriority(PRIO_PROCESS, 0, prio) < 0)
+               PARA_WARNING_LOG("could not set priority to %d: %s\n", prio,
+                       strerror(errno));
+}
+
 /**
  * Give up superuser privileges.
  *