2 * collectd - src/hddtemp.c
3 * Copyright (C) 2005,2006 Vincent Stehlé
4 * Copyright (C) 2006-2010 Florian octo Forster
5 * Copyright (C) 2008 Sebastian Harl
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * Vincent Stehlé <vincent.stehle at free.fr>
23 * Florian octo Forster <octo at collectd.org>
24 * Sebastian Harl <sh at tokkee.org>
27 * Do a pass, some day, and spare some memory. We consume too much for now
28 * in string buffers and the like.
35 #include "configfile.h"
38 # include <netinet/in.h>
39 # include <netinet/tcp.h>
40 # include <libgen.h> /* for basename */
42 #if HAVE_LINUX_MAJOR_H
43 # include <linux/major.h>
46 #define HDDTEMP_DEF_HOST "127.0.0.1"
47 #define HDDTEMP_DEF_PORT "7634"
49 static const char *config_keys[] =
54 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
56 static char *hddtemp_host = NULL;
57 static char hddtemp_port[16];
61 * hddtemp_query_daemon
64 * Connect to the hddtemp daemon and receive data.
67 * `buffer' The buffer where we put the received ascii string.
68 * `buffer_size' Size of the buffer
71 * >= 0 if ok, < 0 otherwise.
74 * Example of possible strings, as received from daemon:
75 * |/dev/hda|ST340014A|36|C|
76 * |/dev/hda|ST380011A|46|C||/dev/hdd|ST340016A|SLP|*|
79 * we need to create a new socket each time. Is there another way?
80 * Hm, maybe we can re-use the `sockaddr' structure? -octo
82 static int hddtemp_query_daemon (char *buffer, int buffer_size)
91 struct addrinfo ai_hints;
92 struct addrinfo *ai_list, *ai_ptr;
95 memset (&ai_hints, '\0', sizeof (ai_hints));
96 ai_hints.ai_flags = 0;
98 ai_hints.ai_flags |= AI_ADDRCONFIG;
100 ai_hints.ai_family = PF_UNSPEC;
101 ai_hints.ai_socktype = SOCK_STREAM;
102 ai_hints.ai_protocol = IPPROTO_TCP;
106 host = HDDTEMP_DEF_HOST;
109 if (strlen (port) == 0)
110 port = HDDTEMP_DEF_PORT;
112 if ((ai_return = getaddrinfo (host, port, &ai_hints, &ai_list)) != 0)
115 ERROR ("hddtemp plugin: getaddrinfo (%s, %s): %s",
117 (ai_return == EAI_SYSTEM)
118 ? sstrerror (errno, errbuf, sizeof (errbuf))
119 : gai_strerror (ai_return));
124 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
126 /* create our socket descriptor */
127 fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype,
128 ai_ptr->ai_protocol);
132 ERROR ("hddtemp plugin: socket: %s",
133 sstrerror (errno, errbuf, sizeof (errbuf)));
137 /* connect to the hddtemp daemon */
138 if (connect (fd, (struct sockaddr *) ai_ptr->ai_addr,
142 INFO ("hddtemp plugin: connect (%s, %s) failed: %s",
144 sstrerror (errno, errbuf, sizeof (errbuf)));
150 /* A socket could be opened and connecting succeeded. We're
155 freeaddrinfo (ai_list);
159 ERROR ("hddtemp plugin: Could not connect to daemon.");
163 /* receive data from the hddtemp daemon */
164 memset (buffer, '\0', buffer_size);
167 while ((status = read (fd, buffer + buffer_fill, buffer_size - buffer_fill)) != 0)
173 if ((errno == EAGAIN) || (errno == EINTR))
176 ERROR ("hddtemp plugin: Error reading from socket: %s",
177 sstrerror (errno, errbuf, sizeof (errbuf)));
181 buffer_fill += status;
183 if (buffer_fill >= buffer_size)
187 if (buffer_fill >= buffer_size)
189 buffer[buffer_size - 1] = '\0';
190 WARNING ("hddtemp plugin: Message from hddtemp has been "
193 else if (buffer_fill == 0)
195 WARNING ("hddtemp plugin: Peer has unexpectedly shut down "
196 "the socket. Buffer: `%s'", buffer);
205 static int hddtemp_config (const char *key, const char *value)
207 if (strcasecmp (key, "Host") == 0)
209 if (hddtemp_host != NULL)
211 hddtemp_host = strdup (value);
213 else if (strcasecmp (key, "Port") == 0)
215 int port = (int) (atof (value));
216 if ((port > 0) && (port <= 65535))
217 ssnprintf (hddtemp_port, sizeof (hddtemp_port),
220 sstrncpy (hddtemp_port, value, sizeof (hddtemp_port));
230 static void hddtemp_submit (char *type_instance, double value)
233 value_list_t vl = VALUE_LIST_INIT;
235 values[0].gauge = value;
239 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
240 sstrncpy (vl.plugin, "hddtemp", sizeof (vl.plugin));
241 sstrncpy (vl.type, "temperature", sizeof (vl.type));
242 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
244 plugin_dispatch_values (&vl);
247 static int hddtemp_read (void)
257 /* get data from daemon */
258 if (hddtemp_query_daemon (buf, sizeof (buf)) < 0)
261 /* NB: strtok_r will eat up "||" and leading "|"'s */
265 while ((fields[num_fields] = strtok_r (ptr, "|", &saveptr)) != NULL)
270 if (num_fields >= 128)
274 num_disks = num_fields / 4;
276 for (i = 0; i < num_disks; i++)
282 mode = fields[4*i + 3];
283 name = basename (fields[4*i + 0]);
285 /* Skip non-temperature information */
286 if (mode[0] != 'C' && mode[0] != 'F')
289 temperature = atof (fields[4*i + 2]);
291 /* Convert farenheit to celsius */
293 temperature = (temperature - 32.0) * 5.0 / 9.0;
295 hddtemp_submit (name, temperature);
299 } /* int hddtemp_read */
302 Register collectd plugin. */
303 void module_register (void)
305 plugin_register_config ("hddtemp", hddtemp_config,
306 config_keys, config_keys_num);
307 plugin_register_read ("hddtemp", hddtemp_read);