exec plugin: Avoid a warning when freeing meta data.

[collectd.git] / src / exec.c

diff --git a/src/exec.c b/src/exec.c
index 711ec99..1f8a9ac 100644 (file)
--- a/src/exec.c
+++ b/src/exec.c
@@ -1,6 +1,8 @@
 /**
  * collectd - src/exec.c
- * Copyright (C) 2007,2008  Florian octo Forster
+ * Copyright (C) 2007-2009  Florian octo Forster
+ * Copyright (C) 2007-2009  Sebastian Harl
+ * Copyright (C) 2008       Peter Holik
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -17,8 +19,12 @@
  *
  * Authors:
  *   Florian octo Forster <octo at verplant.org>
+ *   Sebastian Harl <sh at tokkee.org>
+ *   Peter Holik <peter at holik.at>
  **/
 
+#define _BSD_SOURCE /* For setgroups */
+
 #include "collectd.h"
 #include "common.h"
 #include "plugin.h"
@@ -78,7 +84,7 @@ static pthread_mutex_t pl_lock = PTHREAD_MUTEX_INITIALIZER;
 /*
  * Functions
  */
-static void sigchld_handler (int signal) /* {{{ */
+static void sigchld_handler (int __attribute__((unused)) signal) /* {{{ */
 {
   pid_t pid;
   int status;
@@ -585,7 +591,17 @@ static void *exec_read_one (void *arg) /* {{{ */
         if (errno == EAGAIN || errno == EINTR)  continue;
         break;
       }
-      else if (len == 0) break;  /* We've reached EOF */
+      else if (len == 0)
+      {
+       /* We've reached EOF */
+       NOTICE ("exec plugin: Program `%s' has closed STDERR.",
+           pl->exec);
+       close (fd_err);
+       FD_CLR (fd_err, &fdset);
+       highest_fd = fd;
+       fd_err = -1;
+       continue;
+      }
 
       pbuffer_err[len] = '\0';
 
@@ -615,6 +631,7 @@ static void *exec_read_one (void *arg) /* {{{ */
     copy = fdset;
   }
 
+  DEBUG ("exec plugin: exec_read_one: Waiting for `%s' to exit.", pl->exec);
   if (waitpid (pl->pid, &status, 0) > 0)
     pl->status = status;
 
@@ -628,7 +645,8 @@ static void *exec_read_one (void *arg) /* {{{ */
   pthread_mutex_unlock (&pl_lock);
 
   close (fd);
-  close (fd_err);
+  if (fd_err >= 0)
+    close (fd_err);
 
   pthread_exit ((void *) 0);
   return (NULL);
@@ -690,16 +708,16 @@ static void *exec_notification_one (void *arg) /* {{{ */
   for (meta = n->meta; meta != NULL; meta = meta->next)
   {
     if (meta->type == NM_TYPE_STRING)
-      fprintf (fh, "%s: %s\n", meta->name, meta->value_string);
+      fprintf (fh, "%s: %s\n", meta->name, meta->nm_value.nm_string);
     else if (meta->type == NM_TYPE_SIGNED_INT)
-      fprintf (fh, "%s: %"PRIi64"\n", meta->name, meta->value_signed_int);
+      fprintf (fh, "%s: %"PRIi64"\n", meta->name, meta->nm_value.nm_signed_int);
     else if (meta->type == NM_TYPE_UNSIGNED_INT)
-      fprintf (fh, "%s: %"PRIu64"\n", meta->name, meta->value_unsigned_int);
+      fprintf (fh, "%s: %"PRIu64"\n", meta->name, meta->nm_value.nm_unsigned_int);
     else if (meta->type == NM_TYPE_DOUBLE)
-      fprintf (fh, "%s: %e\n", meta->name, meta->value_double);
+      fprintf (fh, "%s: %e\n", meta->name, meta->nm_value.nm_double);
     else if (meta->type == NM_TYPE_BOOLEAN)
       fprintf (fh, "%s: %s\n", meta->name,
-         meta->value_boolean ? "true" : "false");
+         meta->nm_value.nm_boolean ? "true" : "false");
   }
 
   fprintf (fh, "\n%s\n", n->message);
@@ -712,7 +730,9 @@ static void *exec_notification_one (void *arg) /* {{{ */
   DEBUG ("exec plugin: Child %i exited with status %i.",
       pid, status);
 
-  plugin_notification_meta_free (n);
+  if (n->meta != NULL)
+    plugin_notification_meta_free (n->meta);
+  n->meta = NULL;
   sfree (arg);
   pthread_exit ((void *) 0);
   return (NULL);
@@ -760,7 +780,8 @@ static int exec_read (void) /* {{{ */
   return (0);
 } /* int exec_read }}} */
 
-static int exec_notification (const notification_t *n)
+static int exec_notification (const notification_t *n,
+    user_data_t __attribute__((unused)) *user_data)
 {
   program_list_t *pl;
   program_list_and_notification_t *pln;
@@ -800,7 +821,7 @@ static int exec_notification (const notification_t *n)
   } /* for (pl) */
 
   return (0);
-} /* int exec_notification */
+} /* }}} int exec_notification */
 
 static int exec_shutdown (void) /* {{{ */
 {
@@ -833,7 +854,8 @@ void module_register (void)
   plugin_register_complex_config ("exec", exec_config);
   plugin_register_init ("exec", exec_init);
   plugin_register_read ("exec", exec_read);
-  plugin_register_notification ("exec", exec_notification);
+  plugin_register_notification ("exec", exec_notification,
+      /* user_data = */ NULL);
   plugin_register_shutdown ("exec", exec_shutdown);
 } /* void module_register */