/**
* collectd - src/hddtemp.c
- * Copyright (C) 2005 Vincent Stehlé
+ * Copyright (C) 2005-2006 Vincent Stehlé
*
* 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>
+ *
+ * TODO:
+ * Do a pass, some day, and spare some memory. We consume too much for now
+ * in string buffers and the like.
+ *
**/
#include "collectd.h"
#include "common.h"
#include "plugin.h"
+#include "configfile.h"
+#include "utils_debug.h"
#define MODULE_NAME "hddtemp"
+#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <libgen.h> /* for basename */
-/* LOCALHOST_ADDR
- The ip address 127.0.0.1, as a 32 bit. */
-#define LOCALHOST_ADDR 0x7F000001
+#if HAVE_LINUX_MAJOR_H
+# include <linux/major.h>
+#endif
-/* HDDTEMP_PORT
- The tcp port the hddtemp daemon is listening on. */
-#define HDDTEMP_PORT 7634
+#define HDDTEMP_DEF_HOST "127.0.0.1"
+#define HDDTEMP_DEF_PORT "7634"
/* BUFFER_SIZE
Size of the buffer we use to receive from the hddtemp daemon. */
};
static int ds_num = 1;
+static char *config_keys[] =
+{
+ "Host",
+ "Port",
+ NULL
+};
+static int config_keys_num = 2;
+
typedef struct hddname
{
int major;
} hddname_t;
static hddname_t *first_hddname = NULL;
+static char *hddtemp_host = NULL;
+static char *hddtemp_port = NULL;
/*
* NAME
*
* 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 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 */
- }
- };
+ int fd;
+ ssize_t status;
+ int buffer_fill;
- /* create our socket descriptor */
- if ((sock = socket (PF_INET, SOCK_STREAM, 0)) < 0)
+ const char *host;
+ const char *port;
+
+ struct addrinfo ai_hints;
+ struct addrinfo *ai_list, *ai_ptr;
+ int ai_return;
+
+ memset (&ai_hints, '\0', sizeof (ai_hints));
+ ai_hints.ai_flags = AI_ADDRCONFIG;
+ ai_hints.ai_family = PF_UNSPEC;
+ ai_hints.ai_socktype = SOCK_STREAM;
+ ai_hints.ai_protocol = IPPROTO_TCP;
+
+ host = hddtemp_host;
+ if (host == NULL)
+ host = HDDTEMP_DEF_HOST;
+
+ port = hddtemp_port;
+ if (port == NULL)
+ port = HDDTEMP_DEF_PORT;
+
+ if ((ai_return = getaddrinfo (host, port, &ai_hints, &ai_list)) != 0)
{
- syslog (LOG_ERR, "hddtemp: could not create socket: %s", strerror (errno));
+ syslog (LOG_ERR, "hddtemp: getaddrinfo (%s, %s): %s",
+ host, port,
+ ai_return == EAI_SYSTEM ? strerror (errno) : gai_strerror (ai_return));
return (-1);
}
- /* connect to the hddtemp daemon */
- if (connect (sock, (const struct sockaddr *) &addr, sizeof (addr)))
+ fd = -1;
+ for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
{
- syslog (LOG_ERR, "hddtemp: Could not connect to the hddtemp daemon: %s", strerror (errno));
- close (sock);
+ /* create our socket descriptor */
+ if ((fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol)) < 0)
+ {
+ syslog (LOG_ERR, "hddtemp: socket: %s",
+ strerror (errno));
+ continue;
+ }
+
+ /* connect to the hddtemp daemon */
+ if (connect (fd, (struct sockaddr *) ai_ptr->ai_addr, ai_ptr->ai_addrlen))
+ {
+ DBG ("hddtemp: connect (%s, %s): %s", host, port,
+ strerror (errno));
+ close (fd);
+ fd = -1;
+ continue;
+ }
+ }
+
+ freeaddrinfo (ai_list);
+
+ if (fd < 0)
+ {
+ syslog (LOG_ERR, "hddtemp: Could not connect to daemon.");
return (-1);
}
/* receive data from the hddtemp daemon */
memset (buffer, '\0', buffer_size);
- size = recv (sock, buffer, buffer_size, 0);
- if (size >= buffer_size)
+ buffer_fill = 0;
+ while ((status = read (fd, buffer + buffer_fill, buffer_size - buffer_fill)) != 0)
+ {
+ if (status == -1)
+ {
+ if ((errno == EAGAIN) || (errno == EINTR))
+ continue;
+
+ syslog (LOG_ERR, "hddtemp: Error reading from socket: %s",
+ strerror (errno));
+ return (-1);
+ }
+ buffer_fill += status;
+
+ if (buffer_fill >= buffer_size)
+ break;
+ }
+
+ if (buffer_fill >= buffer_size)
{
+ buffer[buffer_size - 1] = '\0';
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)
+ else if (buffer_fill == 0)
{
- syslog (LOG_WARNING, "hddtemp: Peer has unexpectedly shut down the socket. Buffer: `%s'", buffer);
- close (sock);
+ syslog (LOG_WARNING, "hddtemp: Peer has unexpectedly shut down the socket. "
+ "Buffer: `%s'", buffer);
+ close (fd);
return (-1);
}
- */
- else if (size < 0)
+
+ close (fd);
+ return (0);
+}
+
+static int hddtemp_config (char *key, char *value)
+{
+ if (strcasecmp (key, "host") == 0)
+ {
+ if (hddtemp_host != NULL)
+ free (hddtemp_host);
+ hddtemp_host = strdup (value);
+ }
+ else if (strcasecmp (key, "port") == 0)
+ {
+ if (hddtemp_port != NULL)
+ free (hddtemp_port);
+ hddtemp_port = strdup (value);
+ }
+ else
{
- syslog (LOG_ERR, "hddtemp: Could not receive from the hddtemp daemon: %s", strerror (errno));
- close (sock);
return (-1);
}
- close (sock);
return (0);
}
+/* In the init-function we initialize the `hddname_t' list used to translate
+ * disk-names. Under Linux that's done using `/proc/partitions'. Under other
+ * operating-systems, it's not done at all. */
static void hddtemp_init (void)
{
+#if KERNEL_LINUX
FILE *fh;
char buf[BUFFER_SIZE];
int buflen;
if ((fh = fopen ("/proc/partitions", "r")) != NULL)
{
+ DBG ("Looking at /proc/partitions...");
+
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';
+
+ /* We want lines of the form:
+ *
+ * 3 1 77842926 hda1
+ *
+ * ...so, skip everything else. */
if (buflen == 0)
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;
+ /* We try to keep only entries, which may correspond to
+ * physical disks and that may have a corresponding
+ * entry in the hddtemp daemon. Basically, this means
+ * IDE and SCSI. */
+ switch (major)
+ {
+ /* SCSI. */
+ case SCSI_DISK0_MAJOR:
+ case SCSI_DISK1_MAJOR:
+ case SCSI_DISK2_MAJOR:
+ case SCSI_DISK3_MAJOR:
+ case SCSI_DISK4_MAJOR:
+ case SCSI_DISK5_MAJOR:
+ case SCSI_DISK6_MAJOR:
+ case SCSI_DISK7_MAJOR:
+ case SCSI_DISK8_MAJOR:
+ case SCSI_DISK9_MAJOR:
+ case SCSI_DISK10_MAJOR:
+ case SCSI_DISK11_MAJOR:
+ case SCSI_DISK12_MAJOR:
+ case SCSI_DISK13_MAJOR:
+ case SCSI_DISK14_MAJOR:
+ case SCSI_DISK15_MAJOR:
+ /* SCSI disks minors are multiples of 16.
+ * Keep only those. */
+ if (minor % 16)
+ continue;
+ break;
+
+ /* IDE. */
+ case IDE0_MAJOR:
+ case IDE1_MAJOR:
+ case IDE2_MAJOR:
+ case IDE3_MAJOR:
+ case IDE4_MAJOR:
+ case IDE5_MAJOR:
+ case IDE6_MAJOR:
+ case IDE7_MAJOR:
+ case IDE8_MAJOR:
+ case IDE9_MAJOR:
+ /* IDE disks minors can only be 0 or 64.
+ * Keep only those. */
+ if(minor != 0 && minor != 64)
+ continue;
+ break;
+
+ /* Skip all other majors. */
+ default:
+ DBG ("Skipping unknown major %i", major);
+ continue;
+ } /* switch (major) */
if ((name = strdup (fields[3])) == NULL)
+ {
+ syslog (LOG_ERR, "hddtemp: strdup(%s) == NULL", fields[3]);
continue;
+ }
if ((entry = (hddname_t *) malloc (sizeof (hddname_t))) == NULL)
{
+ syslog (LOG_ERR, "hddtemp: malloc (%u) == NULL", sizeof (hddname_t));
free (name);
continue;
}
+ DBG ("Found disk: %s (%u:%u).", name, major, minor);
+
entry->major = major;
entry->minor = minor;
entry->name = name;
}
}
}
-
- return;
+ else
+ DBG ("Could not open /proc/partitions: %s",
+ strerror (errno));
+#endif /* KERNEL_LINUX */
}
static void hddtemp_write (char *host, char *inst, char *val)
rrd_update_file (host, filename, val, ds_def, ds_num);
}
+/*
+ * hddtemp_get_name
+ *
+ * Description:
+ * Try to "cook" a bit the drive name as returned
+ * by the hddtemp daemon. The intend is to transform disk
+ * names into <major>-<minor> when possible.
+ */
static char *hddtemp_get_name (char *drive)
{
hddname_t *list;
break;
if (list == NULL)
+ {
+ DBG ("Don't know %s, keeping name as-is.", drive);
return (strdup (drive));
+ }
if ((ret = (char *) malloc (128 * sizeof (char))) == NULL)
return (NULL);
{
char buf[BUFFER_SIZE];
- if (snprintf (buf, BUFFER_SIZE, "%u:%.3f", (unsigned int) curtime, temperature) >= BUFFER_SIZE)
+ if (snprintf (buf, BUFFER_SIZE, "%u:%.3f", (unsigned int) curtime, temperature)
+ >= BUFFER_SIZE)
return;
plugin_submit (MODULE_NAME, inst, buf);
char *mode;
mode = fields[4*i + 3];
+ name = basename (fields[4*i + 0]);
/* 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 */
void module_register (void)
{
plugin_register (MODULE_NAME, hddtemp_init, hddtemp_read, hddtemp_write);
+ cf_register (MODULE_NAME, hddtemp_config, config_keys, config_keys_num);
}
#undef MODULE_NAME
projects / collectd.git / blobdiff