--- /dev/null
+/**
+ * collectd - src/thermal.c
+ * Copyright (C) 2008 Micha³ Miros³aw
+ *
+ * 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
+ * Free Software Foundation; only version 2 of the License is applicable.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors:
+ * Micha³ Miros³aw <mirq-linux at rere.qmqm.pl>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "configfile.h"
+#include "utils_ignorelist.h"
+
+#if !KERNEL_LINUX
+# error "This module is for Linux only."
+#endif
+
+const char *const dirname_sysfs = "/sys/class/thermal";
+const char *const dirname_procfs = "/proc/acpi/thermal_zone";
+
+static char force_procfs = 0;
+static ignorelist_t *device_list;
+static value_list_t vl_temp_template = VALUE_LIST_STATIC;
+static value_list_t vl_state_template = VALUE_LIST_STATIC;
+
+enum dev_type {
+ TEMP = 0,
+ COOLING_DEV
+};
+
+static void thermal_submit (const char *plugin_instance, enum dev_type dt, double value)
+{
+ value_list_t vl = dt == TEMP ? vl_temp_template : vl_state_template;
+ value_t vt;
+
+ vt.gauge = value;
+
+ vl.values = &vt;
+ vl.time = time (NULL);
+ sstrncpy (vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
+
+ plugin_dispatch_values (dt == TEMP ? "temperature" : "gauge", &vl);
+}
+
+static int read_file_contents (const char *filename, char *buf, int bufsize)
+{
+ FILE *fh;
+ int n;
+
+ if ((fh = fopen (filename, "r")) == NULL)
+ return -1;
+
+ n = fread(buf, 1, bufsize, fh);
+ fclose(fh);
+
+ return n;
+}
+
+static int thermal_sysfs_device_read (const char *name)
+{
+ char filename[256];
+ char data[1024];
+ int len;
+ int ok = 0;
+
+ len = snprintf (filename, sizeof (filename), "%s/%s/temp", dirname_sysfs, name);
+ if ((len < 0) || ((unsigned int)len >= sizeof (filename)))
+ return -1;
+
+ len = read_file_contents (filename, data, sizeof(data));
+ if (len > 1 && data[--len] == '\n') {
+ char *endptr = NULL;
+ double temp;
+
+ data[len] = 0;
+ errno = 0;
+ temp = strtod (data, &endptr) / 1000.0;
+
+ if (endptr == data + len && errno == 0) {
+ thermal_submit(name, TEMP, temp);
+ ++ok;
+ }
+ }
+
+ len = snprintf (filename, sizeof (filename), "%s/%s/cur_state", dirname_sysfs, name);
+ if ((len < 0) || ((unsigned int)len >= sizeof (filename)))
+ return -1;
+
+ len = read_file_contents (filename, data, sizeof(data));
+ if (len > 1 && data[--len] == '\n') {
+ char *endptr = NULL;
+ double state;
+
+ data[len] = 0;
+ errno = 0;
+ state = strtod (data, &endptr);
+
+ if (endptr == data + len && errno == 0) {
+ thermal_submit(name, COOLING_DEV, state);
+ ++ok;
+ }
+ }
+
+ return ok ? 0 : -1;
+}
+
+static int thermal_procfs_device_read (const char *name)
+{
+ const char str_temp[] = "temperature:";
+ char filename[256];
+ char data[1024];
+ int len;
+
+ /**
+ * rechot ~ # cat /proc/acpi/thermal_zone/THRM/temperature
+ * temperature: 55 C
+ */
+
+ len = snprintf (filename, sizeof (filename), "%s/%s/temperature", dirname_procfs, name);
+ if ((len < 0) || ((unsigned int)len >= sizeof (filename)))
+ return -1;
+
+ len = read_file_contents (filename, data, sizeof(data));
+ if (len > sizeof(str_temp) && data[--len] == '\n' && !strncmp(data, str_temp, sizeof(str_temp)-1)) {
+ char *endptr = NULL;
+ double temp;
+ double celsius, add;
+
+ if (data[--len] == 'C') {
+ add = 0;
+ celsius = 1;
+ } else if (data[len] == 'F') {
+ add = -32;
+ celsius = 5/9;
+ } else if (data[len] == 'K') {
+ add = -273.15;
+ celsius = 1;
+ } else
+ return -1;
+
+ while (len > 0 && data[--len] == ' ')
+ ;
+ data[len + 1] = 0;
+
+ while (len > 0 && data[--len] != ' ')
+ ;
+ ++len;
+
+ errno = 0;
+ temp = (strtod (data + len, &endptr) + add) * celsius;
+
+ if (endptr != data + len && errno == 0) {
+ thermal_submit(name, TEMP, temp);
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+static const char *config_keys[] = {
+ "Device",
+ "IgnoreSelected",
+ "ForceUseProcfs"
+};
+
+static int thermal_config (const char *key, const char *value)
+{
+ if (device_list == NULL)
+ device_list = ignorelist_create (1);
+
+ if (strcasecmp (key, "Device") == 0)
+ {
+ if (ignorelist_add (device_list, value))
+ {
+ ERROR ("thermal plugin: "
+ "Cannot add value to ignorelist.");
+ return 1;
+ }
+ }
+ else if (strcasecmp (key, "IgnoreSelected") == 0)
+ {
+ ignorelist_set_invert (device_list, 1);
+ if ((strcasecmp (value, "True") == 0)
+ || (strcasecmp (value, "Yes") == 0)
+ || (strcasecmp (value, "On") == 0))
+ ignorelist_set_invert (device_list, 0);
+ }
+ else if (strcasecmp (key, "ForceUseProcfs") == 0)
+ {
+ force_procfs = 0;
+ if ((strcasecmp (value, "True") == 0)
+ || (strcasecmp (value, "Yes") == 0)
+ || (strcasecmp (value, "On") == 0))
+ force_procfs = 1;
+ }
+ else
+ {
+ return -1;
+ }
+
+ return 0;
+}
+
+static int walk_directory (const char *dir, int (*callback)(const char *dev))
+{
+ struct dirent *ent;
+ DIR *dh;
+ int ok = 0;
+
+ if ((dh = opendir (dir)) == NULL)
+ {
+ char errbuf[1024];
+ ERROR ("Cannot open '%s': %s", dir,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return -1;
+ }
+
+ while ((ent = readdir (dh)) != NULL)
+ {
+ if (ent->d_name[0] == '.')
+ continue;
+
+ if (device_list) {
+ DEBUG ("thermal plugin: Checking ignorelist for '%s'", ent->d_name);
+ if (ignorelist_match (device_list, ent->d_name))
+ continue;
+ }
+
+ if (!callback(ent->d_name))
+ ++ok;
+ }
+
+ closedir (dh);
+
+ return ok ? 0 : -1;
+}
+
+static int thermal_sysfs_read (void)
+{
+ return walk_directory (dirname_sysfs, thermal_sysfs_device_read);
+}
+
+static int thermal_procfs_read (void)
+{
+ return walk_directory (dirname_procfs, thermal_procfs_device_read);
+}
+
+static int thermal_init (void)
+{
+ int ret = -1;
+
+ if (!force_procfs && access (dirname_sysfs, R_OK | X_OK) == 0) {
+ ret = plugin_register_read ("thermal", thermal_sysfs_read);
+ } else if (access (dirname_procfs, R_OK | X_OK) == 0) {
+ ret = plugin_register_read ("thermal", thermal_procfs_read);
+ }
+
+ if (!ret) {
+ vl_temp_template.values_len = 1;
+ vl_temp_template.interval = interval_g;
+ sstrncpy (vl_temp_template.host, hostname_g,
+ sizeof(vl_temp_template.host));
+ sstrncpy (vl_temp_template.plugin, "thermal",
+ sizeof(vl_temp_template.plugin));
+ sstrncpy (vl_temp_template.type_instance, "temperature",
+ sizeof(vl_temp_template.type_instance));
+
+ vl_state_template = vl_temp_template;
+ sstrncpy (vl_state_template.type_instance, "cooling_state",
+ sizeof(vl_state_template.type_instance));
+ }
+
+ return ret;
+}
+
+static int thermal_shutdown (void)
+{
+ ignorelist_free (device_list);
+
+ return 0;
+}
+
+void module_register (void)
+{
+ plugin_register_config ("thermal", thermal_config,
+ config_keys, STATIC_ARRAY_SIZE(config_keys));
+ plugin_register_init ("thermal", thermal_init);
+ plugin_register_shutdown ("thermal", thermal_shutdown);
+}
+
projects / collectd.git / commitdiff