/**
* collectd - src/hddtemp.c
- * Copyright (C) 2005 Vincent Stehlé
+ * Copyright (C) 2005,2006 Vincent Stehlé
+ * Copyright (C) 2006-2010 Florian octo Forster
+ * Copyright (C) 2008 Sebastian Harl
+ * Copyright (C) 2014 Carnegie Mellon University
*
* 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:
* Vincent Stehlé <vincent.stehle at free.fr>
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
+ * Sebastian Harl <sh at tokkee.org>
+ * Benjamin Gilbert <bgilbert at backtick.net>
+ *
+ * TODO:
+ * Do a pass, some day, and spare some memory. We consume too much for now
+ * in string buffers and the like.
+ *
**/
-#include "hddtemp.h"
+#include "collectd.h"
-#if COLLECT_HDDTEMP
-#define MODULE_NAME "hddtemp"
+#include "common.h"
+#include "plugin.h"
-#include <sys/types.h>
-#include <sys/socket.h>
+#include <assert.h>
+#include <libgen.h> /* for basename */
+#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
-#include <string.h>
-#include <errno.h>
-#include <syslog.h>
-#include <stdlib.h>
-#include <string.h>
-#include <libgen.h> /* for basename */
-#include "plugin.h"
-#include "common.h"
-
-/* LOCALHOST_ADDR
- The ip address 127.0.0.1, as a 32 bit. */
-#define LOCALHOST_ADDR 0x7F000001
-
-/* HDDTEMP_PORT
- The tcp port the hddtemp daemon is listening on. */
-#define HDDTEMP_PORT 7634
-
-/* BUFFER_SIZE
- Size of the buffer we use to receive from the hddtemp daemon. */
-#define BUFFER_SIZE 1024
-
-static char *filename_format = "hddtemp-%s.rrd";
-
-static char *ds_def[] =
-{
- "DS:value:GAUGE:25:U:U",
- NULL
-};
-static int ds_num = 1;
-
-typedef struct hddname
-{
- int major;
- int minor;
- char *name;
- struct hddname *next;
-} hddname_t;
-
-static hddname_t *first_hddname = NULL;
-
-/* hddtemp_query_daemon
- Connect to the hddtemp daemon and receive data.
-
- Parameters:
- buffer: the buffer where we put the received ascii string.
- buffer_size: size of the buffer
-
- Return value:
- >= 0 if ok, < 0 otherwise.
-
- Example of possible strings, as received from daemon:
-
- |/dev/hda|ST340014A|36|C|
- |/dev/hda|ST380011A|46|C||/dev/hdd|ST340016A|SLP|*|
-
- FIXME: we need to create a new socket each time. Is there another way? */
-
-static int hddtemp_query_daemon (char *buffer, int buffer_size)
-{
- int sock;
- ssize_t size;
- const struct sockaddr_in addr =
- {
- AF_INET, /* sin_family */
- htons(HDDTEMP_PORT), /* sin_port */
- { /* sin_addr */
- htonl(LOCALHOST_ADDR), /* s_addr */
- }
- };
-
- /* create our socket descriptor */
- if ((sock = socket (PF_INET, SOCK_STREAM, 0)) < 0)
- {
- syslog (LOG_ERR, "hddtemp: could not create socket: %s", strerror (errno));
- return (-1);
- }
-
- /* connect to the hddtemp daemon */
- if (connect (sock, (const struct sockaddr *) &addr, sizeof (addr)))
- {
- syslog (LOG_ERR, "hddtemp: Could not connect to the hddtemp daemon: %s", strerror (errno));
- close (sock);
- return (-1);
- }
-
- /* receive data from the hddtemp daemon */
- memset (buffer, '\0', buffer_size);
- size = recv (sock, buffer, buffer_size, 0);
-
- if (size >= buffer_size)
- {
- syslog (LOG_WARNING, "hddtemp: Message from hddtemp has been truncated.");
- close (sock);
- return (-1);
- }
- /* FIXME: Since the server closes the connection this returns zero. At
- * least my machine does. -octo */
- /*
- else if (size == 0)
- {
- syslog (LOG_WARNING, "hddtemp: Peer has unexpectedly shut down the socket. Buffer: `%s'", buffer);
- close (sock);
- return (-1);
- }
- */
- else if (size < 0)
- {
- syslog (LOG_ERR, "hddtemp: Could not receive from the hddtemp daemon: %s", strerror (errno));
- close (sock);
- return (-1);
- }
-
- close (sock);
- return (0);
-}
+#if HAVE_LINUX_MAJOR_H
+#include <linux/major.h>
+#endif
-static void hddtemp_init (void)
-{
- FILE *fh;
- char buf[BUFFER_SIZE];
- int buflen;
-
- char *fields[16];
- int num_fields;
-
- int major;
- int minor;
- char *name;
- hddname_t *next;
- hddname_t *entry;
-
- next = first_hddname;
- while (next != NULL)
- {
- entry = next;
- next = entry->next;
-
- free (entry->name);
- free (entry);
- }
- first_hddname = NULL;
-
- if ((fh = fopen ("/proc/partitions", "r")) != NULL)
- {
- while (fgets (buf, BUFFER_SIZE, fh) != NULL)
- {
- /* Delete trailing newlines */
- buflen = strlen (buf);
- while ((buflen > 0) && ((buf[buflen-1] == '\n') || (buf[buflen-1] == '\r')))
- buf[--buflen] = '\0';
- if (buflen == 0)
- continue;
-
- num_fields = strsplit (buf, fields, 16);
-
- if (num_fields != 4)
- continue;
-
- major = atoi (fields[0]);
- minor = atoi (fields[1]);
-
- /* I know that this makes `minor' redundant, but I want
- * to be able to change this beavior in the future..
- * And 4 or 8 bytes won't hurt anybody.. -octo */
- if (major == 0)
- continue;
- if (minor != 0)
- continue;
-
- if ((name = strdup (fields[3])) == NULL)
- continue;
-
- if ((entry = (hddname_t *) malloc (sizeof (hddname_t))) == NULL)
- {
- free (name);
- continue;
- }
-
- entry->major = major;
- entry->minor = minor;
- entry->name = name;
- entry->next = NULL;
-
- if (first_hddname == NULL)
- {
- first_hddname = entry;
- }
- else
- {
- entry->next = first_hddname;
- first_hddname = entry;
- }
- }
- }
-
- return;
-}
+#define HDDTEMP_DEF_HOST "127.0.0.1"
+#define HDDTEMP_DEF_PORT "7634"
+#define HDDTEMP_MAX_RECV_BUF (1 << 20)
-static void hddtemp_write (char *host, char *inst, char *val)
-{
- char filename[BUFFER_SIZE];
- int status;
+static const char *config_keys[] = {"Host", "Port"};
+static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
- /* construct filename */
- status = snprintf (filename, BUFFER_SIZE, filename_format, inst);
- if (status < 1)
- return;
- else if (status >= BUFFER_SIZE)
- return;
+static char *hddtemp_host = NULL;
+static char hddtemp_port[16];
- rrd_update_file (host, filename, val, ds_def, ds_num);
+/*
+ * NAME
+ * hddtemp_query_daemon
+ *
+ * DESCRIPTION
+ * Connect to the hddtemp daemon and receive data.
+ *
+ * ARGUMENTS:
+ * `buffer' The buffer where we put the received ascii string.
+ * `buffer_size' Size of the buffer
+ *
+ * RETURN VALUE:
+ * >= 0 if ok, < 0 otherwise.
+ *
+ * NOTES:
+ * Example of possible strings, as received from daemon:
+ * |/dev/hda|ST340014A|36|C|
+ * |/dev/hda|ST380011A|46|C||/dev/hdd|ST340016A|SLP|*|
+ *
+ * FIXME:
+ * we need to create a new socket each time. Is there another way?
+ * Hm, maybe we can re-use the `sockaddr' structure? -octo
+ */
+static char *hddtemp_query_daemon(void) {
+ int fd;
+ ssize_t status;
+
+ char *buffer;
+ int buffer_size;
+ int buffer_fill;
+ char *new_buffer;
+
+ const char *host;
+ const char *port;
+
+ struct addrinfo *ai_list;
+ int ai_return;
+
+ host = hddtemp_host;
+ if (host == NULL)
+ host = HDDTEMP_DEF_HOST;
+
+ port = hddtemp_port;
+ if (strlen(port) == 0)
+ port = HDDTEMP_DEF_PORT;
+
+ struct addrinfo ai_hints = {.ai_flags = AI_ADDRCONFIG,
+ .ai_family = AF_UNSPEC,
+ .ai_protocol = IPPROTO_TCP,
+ .ai_socktype = SOCK_STREAM};
+
+ if ((ai_return = getaddrinfo(host, port, &ai_hints, &ai_list)) != 0) {
+ char errbuf[1024];
+ ERROR("hddtemp plugin: getaddrinfo (%s, %s): %s", host, port,
+ (ai_return == EAI_SYSTEM) ? sstrerror(errno, errbuf, sizeof(errbuf))
+ : gai_strerror(ai_return));
+ return (NULL);
+ }
+
+ fd = -1;
+ for (struct addrinfo *ai_ptr = ai_list; ai_ptr != NULL;
+ ai_ptr = ai_ptr->ai_next) {
+ /* create our socket descriptor */
+ fd = socket(ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol);
+ if (fd < 0) {
+ char errbuf[1024];
+ ERROR("hddtemp plugin: socket: %s",
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ continue;
+ }
+
+ /* connect to the hddtemp daemon */
+ if (connect(fd, (struct sockaddr *)ai_ptr->ai_addr, ai_ptr->ai_addrlen)) {
+ char errbuf[1024];
+ INFO("hddtemp plugin: connect (%s, %s) failed: %s", host, port,
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ close(fd);
+ fd = -1;
+ continue;
+ }
+
+ /* A socket could be opened and connecting succeeded. We're
+ * done. */
+ break;
+ }
+
+ freeaddrinfo(ai_list);
+
+ if (fd < 0) {
+ ERROR("hddtemp plugin: Could not connect to daemon.");
+ return (NULL);
+ }
+
+ /* receive data from the hddtemp daemon */
+ buffer = NULL;
+ buffer_size = 0;
+ buffer_fill = 0;
+ while (1) {
+ if ((buffer_size == 0) || (buffer_fill >= buffer_size - 1)) {
+ if (buffer_size == 0)
+ buffer_size = 1024;
+ else
+ buffer_size *= 2;
+ if (buffer_size > HDDTEMP_MAX_RECV_BUF) {
+ WARNING("hddtemp plugin: Message from hddtemp has been "
+ "truncated.");
+ break;
+ }
+ new_buffer = realloc(buffer, buffer_size);
+ if (new_buffer == NULL) {
+ close(fd);
+ free(buffer);
+ ERROR("hddtemp plugin: Allocation failed.");
+ return (NULL);
+ }
+ buffer = new_buffer;
+ }
+ status = read(fd, buffer + buffer_fill, buffer_size - buffer_fill - 1);
+ if (status == 0) {
+ break;
+ } else if (status == -1) {
+ char errbuf[1024];
+
+ if ((errno == EAGAIN) || (errno == EINTR))
+ continue;
+
+ ERROR("hddtemp plugin: Error reading from socket: %s",
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ close(fd);
+ free(buffer);
+ return (NULL);
+ }
+ buffer_fill += status;
+ }
+
+ if (buffer_fill == 0) {
+ WARNING("hddtemp plugin: Peer has unexpectedly shut down "
+ "the socket. Buffer: `%s'",
+ buffer);
+ close(fd);
+ free(buffer);
+ return (NULL);
+ }
+
+ assert(buffer_fill < buffer_size);
+ buffer[buffer_fill] = '\0';
+ close(fd);
+ return (buffer);
}
-static char *hddtemp_get_name (char *drive)
-{
- hddname_t *list;
- char *ret;
-
- for (list = first_hddname; list != NULL; list = list->next)
- if (strcmp (drive, list->name) == 0)
- break;
-
- if (list == NULL)
- return (strdup (drive));
-
- if ((ret = (char *) malloc (128 * sizeof (char))) == NULL)
- return (NULL);
-
- if (snprintf (ret, 128, "%i-%i", list->major, list->minor) >= 128)
- {
- free (ret);
- return (NULL);
- }
-
- return (ret);
+static int hddtemp_config(const char *key, const char *value) {
+ if (strcasecmp(key, "Host") == 0) {
+ if (hddtemp_host != NULL)
+ free(hddtemp_host);
+ hddtemp_host = strdup(value);
+ } else if (strcasecmp(key, "Port") == 0) {
+ int port = (int)(atof(value));
+ if ((port > 0) && (port <= 65535))
+ ssnprintf(hddtemp_port, sizeof(hddtemp_port), "%i", port);
+ else
+ sstrncpy(hddtemp_port, value, sizeof(hddtemp_port));
+ } else {
+ return (-1);
+ }
+
+ return (0);
}
-static void hddtemp_submit (char *inst, double temperature)
-{
- char buf[BUFFER_SIZE];
+static void hddtemp_submit(char *type_instance, double value) {
+ value_list_t vl = VALUE_LIST_INIT;
- if (snprintf (buf, BUFFER_SIZE, "%u:%.3f", (unsigned int) curtime, temperature) >= BUFFER_SIZE)
- return;
+ vl.values = &(value_t){.gauge = value};
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, "hddtemp", sizeof(vl.plugin));
+ sstrncpy(vl.type, "temperature", sizeof(vl.type));
+ sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
- plugin_submit (MODULE_NAME, inst, buf);
+ plugin_dispatch_values(&vl);
}
-static void hddtemp_read (void)
-{
- char buf[BUFFER_SIZE];
- char *fields[128];
- char *ptr;
- int num_fields;
- int num_disks;
- int i;
-
- static int wait_time = 1;
- static int wait_left = 0;
-
- if (wait_left >= 10)
- {
- wait_left -= 10;
- return;
- }
-
- /* get data from daemon */
- if (hddtemp_query_daemon (buf, BUFFER_SIZE) < 0)
- {
- /* This limit is reached in log2(86400) =~ 17 steps. Since
- * there is a 2^n seconds wait between each step it will need
- * roughly one day to reach this limit. -octo */
-
- wait_time *= 2;
- if (wait_time > 86400)
- wait_time = 86400;
-
- wait_left = wait_time;
-
- return;
- }
- else
- {
- wait_time = 1;
- wait_left = 0;
- }
-
- /* NB: strtok will eat up "||" and leading "|"'s */
- num_fields = 0;
- ptr = buf;
- while ((fields[num_fields] = strtok (ptr, "|")) != NULL)
- {
- ptr = NULL;
- num_fields++;
-
- if (num_fields >= 128)
- break;
- }
-
- num_disks = num_fields / 4;
-
- for (i = 0; i < num_disks; i++)
- {
- char *name, *submit_name;
- double temperature;
- char *mode;
-
- mode = fields[4*i + 3];
-
- /* Skip non-temperature information */
- if (mode[0] != 'C' && mode[0] != 'F')
- continue;
-
- name = basename (fields[4*i + 0]);
- temperature = atof (fields[4*i + 2]);
-
- /* Convert farenheit to celsius */
- if (mode[0] == 'F')
- temperature = (temperature - 32.0) * 5.0 / 9.0;
-
- if ((submit_name = hddtemp_get_name (name)) != NULL)
- {
- hddtemp_submit (submit_name, temperature);
- free (submit_name);
- }
- else
- {
- hddtemp_submit (name, temperature);
- }
- }
-}
+static int hddtemp_read(void) {
+ char *buf;
+ char *ptr;
+ char *saveptr;
+ char *name;
+ char *model;
+ char *temperature;
+ char *mode;
+
+ /* get data from daemon */
+ buf = hddtemp_query_daemon();
+ if (buf == NULL)
+ return (-1);
+
+ /* NB: strtok_r will eat up "||" and leading "|"'s */
+ ptr = buf;
+ saveptr = NULL;
+ while ((name = strtok_r(ptr, "|", &saveptr)) != NULL &&
+ (model = strtok_r(NULL, "|", &saveptr)) != NULL &&
+ (temperature = strtok_r(NULL, "|", &saveptr)) != NULL &&
+ (mode = strtok_r(NULL, "|", &saveptr)) != NULL) {
+ double temperature_value;
+
+ ptr = NULL;
+
+ /* Skip non-temperature information */
+ if (mode[0] != 'C' && mode[0] != 'F')
+ continue;
+
+ name = basename(name);
+ temperature_value = atof(temperature);
+
+ /* Convert farenheit to celsius */
+ if (mode[0] == 'F')
+ temperature_value = (temperature_value - 32.0) * 5.0 / 9.0;
+
+ hddtemp_submit(name, temperature_value);
+ }
+
+ free(buf);
+ return (0);
+} /* int hddtemp_read */
/* module_register
Register collectd plugin. */
-void module_register (void)
-{
- plugin_register (MODULE_NAME, hddtemp_init, hddtemp_read, hddtemp_write);
+void module_register(void) {
+ plugin_register_config("hddtemp", hddtemp_config, config_keys,
+ config_keys_num);
+ plugin_register_read("hddtemp", hddtemp_read);
}
-
-#endif /* COLLECT_HDDTEMP */
projects / collectd.git / blobdiff