/**
* 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
*
* 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"
return (0);
} /* int exec_config }}} */
+static void set_environment (void) /* {{{ */
+{
+ char buffer[1024];
+
+ ssnprintf (buffer, sizeof (buffer), "%i", interval_g);
+ setenv ("COLLECTD_INTERVAL", buffer, /* overwrite = */ 1);
+
+ ssnprintf (buffer, sizeof (buffer), "%s", hostname_g);
+ setenv ("COLLECTD_HOSTNAME", buffer, /* overwrite = */ 1);
+} /* }}} void set_environment */
+
static void exec_child (program_list_t *pl) /* {{{ */
{
int status;
exit (-1);
} /* void exec_child }}} */
+static void reset_signal_mask (void) /* {{{ */
+{
+ sigset_t ss;
+
+ memset (&ss, 0, sizeof (ss));
+ sigemptyset (&ss);
+ sigprocmask (SIG_SETMASK, &ss, /* old mask = */ NULL);
+} /* }}} void reset_signal_mask */
+
/*
* Creates three pipes (one for reading, one for writing and one for errors),
* forks a child, sets up the pipes so that fd_in is connected to STDIN of
close (fd_pipe_err[1]);
}
+ set_environment ();
+
+ /* Unblock all signals */
+ reset_signal_mask ();
+
exec_child (pl);
/* does not return */
}
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';
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;
pthread_mutex_unlock (&pl_lock);
close (fd);
- close (fd_err);
+ if (fd_err >= 0)
+ close (fd_err);
pthread_exit ((void *) 0);
return (NULL);
DEBUG ("exec plugin: Child %i exited with status %i.",
pid, status);
- plugin_notification_meta_free (n->meta);
+ if (n->meta != NULL)
+ plugin_notification_meta_free (n->meta);
n->meta = NULL;
sfree (arg);
pthread_exit ((void *) 0);
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;
} /* for (pl) */
return (0);
-} /* int exec_notification */
+} /* }}} int exec_notification */
static int exec_shutdown (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 */