X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fhddtemp.c;h=b994fab3774cd3f8f67c98af020967017b18ad64;hb=e4b274ed754af52196d3390b8ce101a7f94e318a;hp=64bd3008d161d25350c4fd6bca0b5986a207ce88;hpb=a82ff6683f0011a498b4fc0947833d2e28925b76;p=collectd.git diff --git a/src/hddtemp.c b/src/hddtemp.c index 64bd3008..b994fab3 100644 --- a/src/hddtemp.c +++ b/src/hddtemp.c @@ -1,6 +1,6 @@ /** * 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 @@ -19,47 +19,38 @@ * Authors: * Vincent Stehlé * Florian octo Forster + * + * 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" - -#if COLLECT_HDDTEMP -#define MODULE_NAME "hddtemp" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include /* for basename */ - -#include "plugin.h" +#include "collectd.h" #include "common.h" +#include "plugin.h" +#include "configfile.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 +# include +# include +# include +# include +# include /* for basename */ -/* BUFFER_SIZE - Size of the buffer we use to receive from the hddtemp daemon. */ -#define BUFFER_SIZE 1024 +#if HAVE_LINUX_MAJOR_H +# include +#endif -static char *filename_format = "hddtemp-%s.rrd"; +#define HDDTEMP_DEF_HOST "127.0.0.1" +#define HDDTEMP_DEF_PORT "7634" -static char *ds_def[] = +static const char *config_keys[] = { - "DS:value:GAUGE:25:U:U", + "Host", + "Port", NULL }; -static int ds_num = 1; +static int config_keys_num = 2; typedef struct hddname { @@ -70,87 +61,181 @@ typedef struct hddname } hddname_t; static hddname_t *first_hddname = NULL; +static char *hddtemp_host = NULL; +static char hddtemp_port[16]; -/* hddtemp_query_daemon - Connect to the hddtemp daemon and receive data. +/* + * 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 int hddtemp_query_daemon (char *buffer, int buffer_size) +{ + int fd; + ssize_t status; + int buffer_fill; - Parameters: - buffer: the buffer where we put the received ascii string. - buffer_size: size of the buffer + const char *host; + const char *port; - Return value: - >= 0 if ok, < 0 otherwise. + struct addrinfo ai_hints; + struct addrinfo *ai_list, *ai_ptr; + int ai_return; - Example of possible strings, as received from daemon: + 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; - |/dev/hda|ST340014A|36|C| - |/dev/hda|ST380011A|46|C||/dev/hdd|ST340016A|SLP|*| + host = hddtemp_host; + if (host == NULL) + host = HDDTEMP_DEF_HOST; - FIXME: we need to create a new socket each time. Is there another way? */ + port = hddtemp_port; + if (strlen (port) == 0) + port = HDDTEMP_DEF_PORT; -static int hddtemp_query_daemon (char *buffer, int buffer_size) -{ - int sock; - ssize_t size; - const struct sockaddr_in addr = + if ((ai_return = getaddrinfo (host, port, &ai_hints, &ai_list)) != 0) { - AF_INET, /* sin_family */ - htons(HDDTEMP_PORT), /* sin_port */ - { /* sin_addr */ - htonl(LOCALHOST_ADDR), /* s_addr */ - } - }; + char errbuf[1024]; + ERROR ("hddtemp: getaddrinfo (%s, %s): %s", + host, port, + (ai_return == EAI_SYSTEM) + ? sstrerror (errno, errbuf, sizeof (errbuf)) + : gai_strerror (ai_return)); + return (-1); + } - /* create our socket descriptor */ - if ((sock = socket (PF_INET, SOCK_STREAM, 0)) < 0) + fd = -1; + for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) { - syslog (LOG_ERR, "hddtemp: could not create socket: %s", strerror (errno)); - return (-1); + /* create our socket descriptor */ + if ((fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol)) < 0) + { + char errbuf[1024]; + ERROR ("hddtemp: 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]; + DEBUG ("hddtemp: connect (%s, %s): %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; } - /* connect to the hddtemp daemon */ - if (connect (sock, (const struct sockaddr *) &addr, sizeof (addr))) + freeaddrinfo (ai_list); + + if (fd < 0) { - syslog (LOG_ERR, "hddtemp: Could not connect to the hddtemp daemon: %s", strerror (errno)); - close (sock); + ERROR ("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) { - syslog (LOG_WARNING, "hddtemp: Message from hddtemp has been truncated."); - close (sock); - return (-1); + if (status == -1) + { + char errbuf[1024]; + + if ((errno == EAGAIN) || (errno == EINTR)) + continue; + + ERROR ("hddtemp: Error reading from socket: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + close (fd); + return (-1); + } + buffer_fill += status; + + if (buffer_fill >= buffer_size) + break; + } + + if (buffer_fill >= buffer_size) + { + buffer[buffer_size - 1] = '\0'; + WARNING ("hddtemp: Message from hddtemp has been truncated."); } - /* 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); + 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 (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)) + snprintf (hddtemp_port, sizeof (hddtemp_port), + "%i", port); + else + strncpy (hddtemp_port, value, sizeof (hddtemp_port)); + hddtemp_port[sizeof (hddtemp_port) - 1] = '\0'; + } + else { - syslog (LOG_ERR, "hddtemp: Could not receive from the hddtemp daemon: %s", strerror (errno)); - close (sock); return (-1); } - close (sock); return (0); } -static void hddtemp_init (void) +/* 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 int hddtemp_init (void) { +#if KERNEL_LINUX FILE *fh; - char buf[BUFFER_SIZE]; + char buf[1024]; int buflen; char *fields[16]; @@ -175,12 +260,21 @@ static void hddtemp_init (void) if ((fh = fopen ("/proc/partitions", "r")) != NULL) { - while (fgets (buf, BUFFER_SIZE, fh) != NULL) + DEBUG ("Looking at /proc/partitions..."); + + while (fgets (buf, sizeof (buf), 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; @@ -192,23 +286,74 @@ static void hddtemp_init (void) 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: + DEBUG ("Skipping unknown major %i", major); + continue; + } /* switch (major) */ if ((name = strdup (fields[3])) == NULL) + { + ERROR ("hddtemp: strdup(%s) == NULL", fields[3]); continue; + } if ((entry = (hddname_t *) malloc (sizeof (hddname_t))) == NULL) { + ERROR ("hddtemp: malloc (%u) == NULL", + (unsigned int) sizeof (hddname_t)); free (name); continue; } + DEBUG ("Found disk: %s (%u:%u).", name, major, minor); + entry->major = major; entry->minor = minor; entry->name = name; @@ -224,26 +369,29 @@ static void hddtemp_init (void) first_hddname = entry; } } + fclose (fh); } +#if COLLECT_DEBUG + else + { + char errbuf[1024]; + DEBUG ("Could not open /proc/partitions: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + } +#endif /* COLLECT_DEBUG */ +#endif /* KERNEL_LINUX */ - return; -} - -static void hddtemp_write (char *host, char *inst, char *val) -{ - char filename[BUFFER_SIZE]; - int status; - - /* construct filename */ - status = snprintf (filename, BUFFER_SIZE, filename_format, inst); - if (status < 1) - return; - else if (status >= BUFFER_SIZE) - return; - - rrd_update_file (host, filename, val, ds_def, ds_num); -} + return (0); +} /* int hddtemp_init */ +/* + * 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 - when possible. + */ static char *hddtemp_get_name (char *drive) { hddname_t *list; @@ -254,7 +402,10 @@ static char *hddtemp_get_name (char *drive) break; if (list == NULL) + { + DEBUG ("Don't know %s, keeping name as-is.", drive); return (strdup (drive)); + } if ((ret = (char *) malloc (128 * sizeof (char))) == NULL) return (NULL); @@ -268,59 +419,42 @@ static char *hddtemp_get_name (char *drive) return (ret); } -static void hddtemp_submit (char *inst, double temperature) +static void hddtemp_submit (char *type_instance, double value) { - char buf[BUFFER_SIZE]; + value_t values[1]; + value_list_t vl = VALUE_LIST_INIT; + + values[0].gauge = value; - if (snprintf (buf, BUFFER_SIZE, "%u:%.3f", (unsigned int) curtime, temperature) >= BUFFER_SIZE) - return; + vl.values = values; + vl.values_len = 1; + vl.time = time (NULL); + strcpy (vl.host, hostname_g); + strcpy (vl.plugin, "hddtemp"); + strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance)); - plugin_submit (MODULE_NAME, inst, buf); + plugin_dispatch_values ("temperature", &vl); } -static void hddtemp_read (void) +static int hddtemp_read (void) { - char buf[BUFFER_SIZE]; + char buf[1024]; char *fields[128]; char *ptr; + char *saveptr; 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; - } + if (hddtemp_query_daemon (buf, sizeof (buf)) < 0) + return (-1); - /* NB: strtok will eat up "||" and leading "|"'s */ + /* NB: strtok_r will eat up "||" and leading "|"'s */ num_fields = 0; ptr = buf; - while ((fields[num_fields] = strtok (ptr, "|")) != NULL) + saveptr = NULL; + while ((fields[num_fields] = strtok_r (ptr, "|", &saveptr)) != NULL) { ptr = NULL; num_fields++; @@ -338,12 +472,12 @@ static void hddtemp_read (void) 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 */ @@ -360,13 +494,16 @@ static void hddtemp_read (void) hddtemp_submit (name, temperature); } } -} + + return (0); +} /* int hddtemp_read */ /* module_register Register collectd plugin. */ void module_register (void) { - plugin_register (MODULE_NAME, hddtemp_init, hddtemp_read, hddtemp_write); + plugin_register_config ("hddtemp", hddtemp_config, + config_keys, config_keys_num); + plugin_register_init ("hddtemp", hddtemp_init); + plugin_register_read ("hddtemp", hddtemp_read); } - -#endif /* COLLECT_HDDTEMP */