The C<unixsock plugin> opens an UNIX-socket over which one can interact with
the daemon. This can be used to use the values collected by collectd in other
-applications, such as monitoring, or submit externally collected values to
-collectd.
+applications, such as monitoring solutions, or submit externally collected
+values to collectd.
-This plugin is used by L<collectd-nagios(1)> to check if some value is in a
-certain range and exit with a Nagios-compatible exit code.
+For example, this plugin is used by L<collectd-nagios(1)> to check if some
+value is in a certain range and exit with a Nagios-compatible exit code.
=head1 COMMANDS
*/
if (fields[i][0] == '.')
{
- ERROR ("Cowardly refusing to create a directory that begins with a `.' (dot): `%s'", file_orig);
+ ERROR ("Cowardly refusing to create a directory that "
+ "begins with a `.' (dot): `%s'", file_orig);
return (-2);
}
return (-1);
}
- if (stat (dir, &statbuf) == -1)
- {
- if (errno == ENOENT)
+ while (42) {
+ if (stat (dir, &statbuf) == -1)
{
- if (mkdir (dir, 0755) == -1)
+ if (errno == ENOENT)
{
+ if (mkdir (dir, 0755) == 0)
+ break;
+
+ /* this might happen, if a different thread created
+ * the directory in the meantime
+ * => call stat() again to check for S_ISDIR() */
+ if (EEXIST == errno)
+ continue;
+
char errbuf[1024];
ERROR ("check_create_dir: mkdir (%s): %s", dir,
sstrerror (errno,
errbuf, sizeof (errbuf)));
return (-1);
}
+ else
+ {
+ char errbuf[1024];
+ ERROR ("check_create_dir: stat (%s): %s", dir,
+ sstrerror (errno, errbuf,
+ sizeof (errbuf)));
+ return (-1);
+ }
}
- else
+ else if (!S_ISDIR (statbuf.st_mode))
{
- char errbuf[1024];
- ERROR ("stat (%s): %s", dir,
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
+ ERROR ("check_create_dir: `%s' exists but is not "
+ "a directory!", dir);
return (-1);
}
- }
- else if (!S_ISDIR (statbuf.st_mode))
- {
- ERROR ("stat (%s): Not a directory!", dir);
- return (-1);
+ break;
}
}
/* Passing `pcap_device == NULL' is okay and the same as passign "any" */
DEBUG ("Creating PCAP object..");
- pcap_obj = pcap_open_live (pcap_device,
+ pcap_obj = pcap_open_live ((pcap_device != NULL) ? pcap_device : "any",
PCAP_SNAPLEN,
0 /* Not promiscuous */,
interval_g,