src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005       Lyonel Vincent
   4  * Copyright (C) 2006-2008  Florian octo Forster
   5  * Copyright (C) 2008       Oleg King
   6  * Copyright (C) 2009       Sebastian Harl
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  21  *
  22  * Authors:
  23  *   Lyonel Vincent <lyonel at ezix.org>
  24  *   Florian octo Forster <octo at verplant.org>
  25  *   Oleg King <king2 at kaluga.ru>
  26  *   Sebastian Harl <sh at tokkee.org>
  27  **/
  28
  29 #include "collectd.h"
  30 #include "common.h"
  31 #include "plugin.h"
  32 #include "configfile.h"
  33
  34 /* Include header files for the mach system, if they exist.. */
  35 #if HAVE_THREAD_INFO
  36 #  if HAVE_MACH_MACH_INIT_H
  37 #    include <mach/mach_init.h>
  38 #  endif
  39 #  if HAVE_MACH_HOST_PRIV_H
  40 #    include <mach/host_priv.h>
  41 #  endif
  42 #  if HAVE_MACH_MACH_ERROR_H
  43 #    include <mach/mach_error.h>
  44 #  endif
  45 #  if HAVE_MACH_MACH_HOST_H
  46 #    include <mach/mach_host.h>
  47 #  endif
  48 #  if HAVE_MACH_MACH_PORT_H
  49 #    include <mach/mach_port.h>
  50 #  endif
  51 #  if HAVE_MACH_MACH_TYPES_H
  52 #    include <mach/mach_types.h>
  53 #  endif
  54 #  if HAVE_MACH_MESSAGE_H
  55 #    include <mach/message.h>
  56 #  endif
  57 #  if HAVE_MACH_PROCESSOR_SET_H
  58 #    include <mach/processor_set.h>
  59 #  endif
  60 #  if HAVE_MACH_TASK_H
  61 #    include <mach/task.h>
  62 #  endif
  63 #  if HAVE_MACH_THREAD_ACT_H
  64 #    include <mach/thread_act.h>
  65 #  endif
  66 #  if HAVE_MACH_VM_REGION_H
  67 #    include <mach/vm_region.h>
  68 #  endif
  69 #  if HAVE_MACH_VM_MAP_H
  70 #    include <mach/vm_map.h>
  71 #  endif
  72 #  if HAVE_MACH_VM_PROT_H
  73 #    include <mach/vm_prot.h>
  74 #  endif
  75 #  if HAVE_SYS_SYSCTL_H
  76 #    include <sys/sysctl.h>
  77 #  endif
  78 /* #endif HAVE_THREAD_INFO */
  79
  80 #elif KERNEL_LINUX
  81 #  if HAVE_LINUX_CONFIG_H
  82 #    include <linux/config.h>
  83 #  endif
  84 #  ifndef CONFIG_HZ
  85 #    define CONFIG_HZ 100
  86 #  endif
  87 /* #endif KERNEL_LINUX */
  88
  89 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
  90 #  include <kvm.h>
  91 #  include <sys/param.h>
  92 #  include <sys/sysctl.h>
  93 #  include <sys/user.h>
  94 #  include <sys/proc.h>
  95 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
  96
  97 #else
  98 # error "No applicable input method."
  99 #endif
 100
 101 #if HAVE_REGEX_H
 102 # include <regex.h>
 103 #endif
 104
 105 #ifndef ARG_MAX
 106 #  define ARG_MAX 4096
 107 #endif
 108
 109 #define BUFSIZE 256
 110
 111 static const char *config_keys[] =
 112 {
 113         "Process",
 114         "ProcessMatch"
 115 };
 116 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 117
 118 typedef struct procstat_entry_s
 119 {
 120         unsigned long id;
 121         unsigned long age;
 122
 123         unsigned long num_proc;
 124         unsigned long num_lwp;
 125         unsigned long vmem_size;
 126         unsigned long vmem_rss;
 127         unsigned long stack_size;
 128
 129         unsigned long vmem_minflt;
 130         unsigned long vmem_majflt;
 131         unsigned long vmem_minflt_counter;
 132         unsigned long vmem_majflt_counter;
 133
 134         unsigned long cpu_user;
 135         unsigned long cpu_system;
 136         unsigned long cpu_user_counter;
 137         unsigned long cpu_system_counter;
 138
 139         struct procstat_entry_s *next;
 140 } procstat_entry_t;
 141
 142 #define PROCSTAT_NAME_LEN 256
 143 typedef struct procstat
 144 {
 145         char          name[PROCSTAT_NAME_LEN];
 146 #if HAVE_REGEX_H
 147         regex_t *re;
 148 #endif
 149
 150         unsigned long num_proc;
 151         unsigned long num_lwp;
 152         unsigned long vmem_size;
 153         unsigned long vmem_rss;
 154         unsigned long stack_size;
 155
 156         unsigned long vmem_minflt_counter;
 157         unsigned long vmem_majflt_counter;
 158
 159         unsigned long cpu_user_counter;
 160         unsigned long cpu_system_counter;
 161
 162         struct procstat   *next;
 163         struct procstat_entry_s *instances;
 164 } procstat_t;
 165
 166 static procstat_t *list_head_g = NULL;
 167
 168 #if HAVE_THREAD_INFO
 169 static mach_port_t port_host_self;
 170 static mach_port_t port_task_self;
 171
 172 static processor_set_name_array_t pset_list;
 173 static mach_msg_type_number_t     pset_list_len;
 174 /* #endif HAVE_THREAD_INFO */
 175
 176 #elif KERNEL_LINUX
 177 static long pagesize_g;
 178 /* #endif KERNEL_LINUX */
 179
 180 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 181 /* no global variables */
 182 #endif /* HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 183
 184 /* put name of process from config to list_head_g tree
 185    list_head_g is a list of 'procstat_t' structs with
 186    processes names we want to watch */
 187 static void ps_list_register (const char *name, const char *regexp)
 188 {
 189         procstat_t *new;
 190         procstat_t *ptr;
 191         int status;
 192
 193         new = (procstat_t *) malloc (sizeof (procstat_t));
 194         if (new == NULL)
 195         {
 196                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 197                 return;
 198         }
 199         memset (new, 0, sizeof (procstat_t));
 200         sstrncpy (new->name, name, sizeof (new->name));
 201
 202 #if HAVE_REGEX_H
 203         if (regexp != NULL)
 204         {
 205                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 206                 new->re = (regex_t *) malloc (sizeof (regex_t));
 207                 if (new->re == NULL)
 208                 {
 209                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 210                         sfree (new);
 211                         return;
 212                 }
 213
 214                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 215                 if (status != 0)
 216                 {
 217                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 218                         sfree(new->re);
 219                         return;
 220                 }
 221         }
 222 #else
 223         if (regexp != NULL)
 224         {
 225                 ERROR ("processes plugin: ps_list_register: "
 226                                 "Regular expression \"%s\" found in config "
 227                                 "file, but support for regular expressions "
 228                                 "has been dispabled at compile time.",
 229                                 regexp);
 230                 sfree (new);
 231                 return;
 232         }
 233 #endif
 234
 235         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 236         {
 237                 if (strcmp (ptr->name, name) == 0)
 238                 {
 239                         WARNING ("processes plugin: You have configured more "
 240                                         "than one `Process' or "
 241                                         "`ProcessMatch' with the same name. "
 242                                         "All but the first setting will be "
 243                                         "ignored.");
 244                         sfree (new->re);
 245                         sfree (new);
 246                         return;
 247                 }
 248
 249                 if (ptr->next == NULL)
 250                         break;
 251         }
 252
 253         if (ptr == NULL)
 254                 list_head_g = new;
 255         else
 256                 ptr->next = new;
 257 } /* void ps_list_register */
 258
 259 /* try to match name against entry, returns 1 if success */
 260 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 261 {
 262 #if HAVE_REGEX_H
 263         if (ps->re != NULL)
 264         {
 265                 int status;
 266                 const char *str;
 267
 268                 str = cmdline;
 269                 if ((str == NULL) || (str[0] == 0))
 270                         str = name;
 271
 272                 assert (str != NULL);
 273
 274                 status = regexec (ps->re, str,
 275                                 /* nmatch = */ 0,
 276                                 /* pmatch = */ NULL,
 277                                 /* eflags = */ 0);
 278                 if (status == 0)
 279                         return (1);
 280         }
 281         else
 282 #endif
 283         if (strcmp (ps->name, name) == 0)
 284                 return (1);
 285
 286         return (0);
 287 } /* int ps_list_match */
 288
 289 /* add process entry to 'instances' of process 'name' (or refresh it) */
 290 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 291 {
 292         procstat_t *ps;
 293         procstat_entry_t *pse;
 294
 295         if (entry->id == 0)
 296                 return;
 297
 298         for (ps = list_head_g; ps != NULL; ps = ps->next)
 299         {
 300                 if ((ps_list_match (name, cmdline, ps)) == 0)
 301                         continue;
 302
 303                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 304                         if ((pse->id == entry->id) || (pse->next == NULL))
 305                                 break;
 306
 307                 if ((pse == NULL) || (pse->id != entry->id))
 308                 {
 309                         procstat_entry_t *new;
 310
 311                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 312                         if (new == NULL)
 313                                 return;
 314                         memset (new, 0, sizeof (procstat_entry_t));
 315                         new->id = entry->id;
 316
 317                         if (pse == NULL)
 318                                 ps->instances = new;
 319                         else
 320                                 pse->next = new;
 321
 322                         pse = new;
 323                 }
 324
 325                 pse->age = 0;
 326                 pse->num_proc   = entry->num_proc;
 327                 pse->num_lwp    = entry->num_lwp;
 328                 pse->vmem_size  = entry->vmem_size;
 329                 pse->vmem_rss   = entry->vmem_rss;
 330                 pse->stack_size = entry->stack_size;
 331
 332                 ps->num_proc   += pse->num_proc;
 333                 ps->num_lwp    += pse->num_lwp;
 334                 ps->vmem_size  += pse->vmem_size;
 335                 ps->vmem_rss   += pse->vmem_rss;
 336                 ps->stack_size += pse->stack_size;
 337
 338                 if ((entry->vmem_minflt_counter == 0)
 339                                 && (entry->vmem_majflt_counter == 0))
 340                 {
 341                         pse->vmem_minflt_counter += entry->vmem_minflt;
 342                         pse->vmem_minflt = entry->vmem_minflt;
 343
 344                         pse->vmem_majflt_counter += entry->vmem_majflt;
 345                         pse->vmem_majflt = entry->vmem_majflt;
 346                 }
 347                 else
 348                 {
 349                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 350                         {
 351                                 pse->vmem_minflt = entry->vmem_minflt_counter
 352                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 353                         }
 354                         else
 355                         {
 356                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 357                         }
 358                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 359
 360                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 361                         {
 362                                 pse->vmem_majflt = entry->vmem_majflt_counter
 363                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 364                         }
 365                         else
 366                         {
 367                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 368                         }
 369                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 370                 }
 371
 372                 ps->vmem_minflt_counter += pse->vmem_minflt;
 373                 ps->vmem_majflt_counter += pse->vmem_majflt;
 374
 375                 if ((entry->cpu_user_counter == 0)
 376                                 && (entry->cpu_system_counter == 0))
 377                 {
 378                         pse->cpu_user_counter += entry->cpu_user;
 379                         pse->cpu_user = entry->cpu_user;
 380
 381                         pse->cpu_system_counter += entry->cpu_system;
 382                         pse->cpu_system = entry->cpu_system;
 383                 }
 384                 else
 385                 {
 386                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 387                         {
 388                                 pse->cpu_user = entry->cpu_user_counter
 389                                         + (ULONG_MAX - pse->cpu_user_counter);
 390                         }
 391                         else
 392                         {
 393                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 394                         }
 395                         pse->cpu_user_counter = entry->cpu_user_counter;
 396
 397                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 398                         {
 399                                 pse->cpu_system = entry->cpu_system_counter
 400                                         + (ULONG_MAX - pse->cpu_system_counter);
 401                         }
 402                         else
 403                         {
 404                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 405                         }
 406                         pse->cpu_system_counter = entry->cpu_system_counter;
 407                 }
 408
 409                 ps->cpu_user_counter   += pse->cpu_user;
 410                 ps->cpu_system_counter += pse->cpu_system;
 411         }
 412 }
 413
 414 /* remove old entries from instances of processes in list_head_g */
 415 static void ps_list_reset (void)
 416 {
 417         procstat_t *ps;
 418         procstat_entry_t *pse;
 419         procstat_entry_t *pse_prev;
 420
 421         for (ps = list_head_g; ps != NULL; ps = ps->next)
 422         {
 423                 ps->num_proc    = 0;
 424                 ps->num_lwp     = 0;
 425                 ps->vmem_size   = 0;
 426                 ps->vmem_rss    = 0;
 427                 ps->stack_size  = 0;
 428
 429                 pse_prev = NULL;
 430                 pse = ps->instances;
 431                 while (pse != NULL)
 432                 {
 433                         if (pse->age > 10)
 434                         {
 435                                 DEBUG ("Removing this procstat entry cause it's too old: "
 436                                                 "id = %lu; name = %s;",
 437                                                 pse->id, ps->name);
 438
 439                                 if (pse_prev == NULL)
 440                                 {
 441                                         ps->instances = pse->next;
 442                                         free (pse);
 443                                         pse = ps->instances;
 444                                 }
 445                                 else
 446                                 {
 447                                         pse_prev->next = pse->next;
 448                                         free (pse);
 449                                         pse = pse_prev->next;
 450                                 }
 451                         }
 452                         else
 453                         {
 454                                 pse->age++;
 455                                 pse_prev = pse;
 456                                 pse = pse->next;
 457                         }
 458                 } /* while (pse != NULL) */
 459         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 460 }
 461
 462 /* put all pre-defined 'Process' names from config to list_head_g tree */
 463 static int ps_config (const char *key, const char *value)
 464 {
 465         if (strcasecmp (key, "Process") == 0)
 466         {
 467                 ps_list_register (value, NULL);
 468         }
 469         else if (strcasecmp (key, "ProcessMatch") == 0)
 470         {
 471                 char *new_val;
 472                 char *fields[3];
 473                 int fields_num;
 474
 475                 new_val = strdup (value);
 476                 if (new_val == NULL) {
 477                         ERROR ("processes plugin: strdup failed when processing "
 478                                         "`ProcessMatch %s'.", value);
 479                         return (1);
 480                 }
 481
 482                 fields_num = strsplit (new_val, fields,
 483                                 STATIC_ARRAY_SIZE (fields));
 484                 if (fields_num != 2)
 485                 {
 486                         ERROR ("processes plugin: `ProcessMatch' needs exactly "
 487                                         "two string arguments.");
 488                         sfree (new_val);
 489                         return (1);
 490                 }
 491                 ps_list_register (fields[0], fields[1]);
 492                 sfree (new_val);
 493         }
 494         else
 495         {
 496                 ERROR ("processes plugin: The `%s' configuration option is not "
 497                                 "understood and will be ignored.", key);
 498                 return (-1);
 499         }
 500
 501         return (0);
 502 }
 503
 504 static int ps_init (void)
 505 {
 506 #if HAVE_THREAD_INFO
 507         kern_return_t status;
 508
 509         port_host_self = mach_host_self ();
 510         port_task_self = mach_task_self ();
 511
 512         if (pset_list != NULL)
 513         {
 514                 vm_deallocate (port_task_self,
 515                                 (vm_address_t) pset_list,
 516                                 pset_list_len * sizeof (processor_set_t));
 517                 pset_list = NULL;
 518                 pset_list_len = 0;
 519         }
 520
 521         if ((status = host_processor_sets (port_host_self,
 522                                         &pset_list,
 523                                         &pset_list_len)) != KERN_SUCCESS)
 524         {
 525                 ERROR ("host_processor_sets failed: %s\n",
 526                                 mach_error_string (status));
 527                 pset_list = NULL;
 528                 pset_list_len = 0;
 529                 return (-1);
 530         }
 531 /* #endif HAVE_THREAD_INFO */
 532
 533 #elif KERNEL_LINUX
 534         pagesize_g = sysconf(_SC_PAGESIZE);
 535         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 536                         pagesize_g, CONFIG_HZ);
 537 /* #endif KERNEL_LINUX */
 538
 539 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 540 /* no initialization */
 541 #endif /* HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 542
 543         return (0);
 544 } /* int ps_init */
 545
 546 /* submit global state (e.g.: qty of zombies, running, etc..) */
 547 static void ps_submit_state (const char *state, double value)
 548 {
 549         value_t values[1];
 550         value_list_t vl = VALUE_LIST_INIT;
 551
 552         values[0].gauge = value;
 553
 554         vl.values = values;
 555         vl.values_len = 1;
 556         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 557         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 558         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 559         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 560         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 561
 562         plugin_dispatch_values (&vl);
 563 }
 564
 565 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 566 static void ps_submit_proc_list (procstat_t *ps)
 567 {
 568         value_t values[2];
 569         value_list_t vl = VALUE_LIST_INIT;
 570
 571         vl.values = values;
 572         vl.values_len = 2;
 573         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 574         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 575         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 576
 577         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 578         vl.values[0].gauge = ps->vmem_size;
 579         vl.values_len = 1;
 580         plugin_dispatch_values (&vl);
 581
 582         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 583         vl.values[0].gauge = ps->vmem_rss;
 584         vl.values_len = 1;
 585         plugin_dispatch_values (&vl);
 586
 587         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 588         vl.values[0].gauge = ps->stack_size;
 589         vl.values_len = 1;
 590         plugin_dispatch_values (&vl);
 591
 592         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 593         vl.values[0].counter = ps->cpu_user_counter;
 594         vl.values[1].counter = ps->cpu_system_counter;
 595         vl.values_len = 2;
 596         plugin_dispatch_values (&vl);
 597
 598         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 599         vl.values[0].gauge = ps->num_proc;
 600         vl.values[1].gauge = ps->num_lwp;
 601         vl.values_len = 2;
 602         plugin_dispatch_values (&vl);
 603
 604         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 605         vl.values[0].counter = ps->vmem_minflt_counter;
 606         vl.values[1].counter = ps->vmem_majflt_counter;
 607         vl.values_len = 2;
 608         plugin_dispatch_values (&vl);
 609
 610         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 611                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 612                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 613                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 614                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 615                         ps->cpu_user_counter, ps->cpu_system_counter);
 616 } /* void ps_submit_proc_list */
 617
 618 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 619 #if KERNEL_LINUX
 620 static int ps_read_tasks (int pid)
 621 {
 622         char           dirname[64];
 623         DIR           *dh;
 624         struct dirent *ent;
 625         int count = 0;
 626
 627         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 628
 629         if ((dh = opendir (dirname)) == NULL)
 630         {
 631                 DEBUG ("Failed to open directory `%s'", dirname);
 632                 return (-1);
 633         }
 634
 635         while ((ent = readdir (dh)) != NULL)
 636         {
 637                 if (!isdigit ((int) ent->d_name[0]))
 638                         continue;
 639                 else
 640                         count++;
 641         }
 642         closedir (dh);
 643
 644         return ((count >= 1) ? count : 1);
 645 } /* int *ps_read_tasks */
 646
 647 int ps_read_process (int pid, procstat_t *ps, char *state)
 648 {
 649         char  filename[64];
 650         char  buffer[1024];
 651
 652         char *fields[64];
 653         char  fields_len;
 654
 655         int   i;
 656
 657         int   ppid;
 658         int   name_len;
 659
 660         long long unsigned cpu_user_counter;
 661         long long unsigned cpu_system_counter;
 662         long long unsigned vmem_size;
 663         long long unsigned vmem_rss;
 664         long long unsigned stack_size;
 665
 666         memset (ps, 0, sizeof (procstat_t));
 667
 668         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 669
 670         i = read_file_contents (filename, buffer, sizeof(buffer) - 1);
 671         if (i <= 0)
 672                 return (-1);
 673         buffer[i] = 0;
 674
 675         fields_len = strsplit (buffer, fields, 64);
 676         if (fields_len < 24)
 677         {
 678                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 679                                 " `%s' has only %i fields..",
 680                                 (int) pid, filename, fields_len);
 681                 return (-1);
 682         }
 683
 684         /* copy the name, strip brackets in the process */
 685         name_len = strlen (fields[1]) - 2;
 686         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 687         {
 688                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 689                 return (-1);
 690         }
 691         fields[1] = fields[1] + 1;
 692         fields[1][name_len] = '\0';
 693         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 694
 695         ppid = atoi (fields[3]);
 696
 697         *state = fields[2][0];
 698
 699         if (*state == 'Z')
 700         {
 701                 ps->num_lwp  = 0;
 702                 ps->num_proc = 0;
 703         }
 704         else
 705         {
 706                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
 707                 {
 708                         /* returns -1 => kernel 2.4 */
 709                         ps->num_lwp = 1;
 710                 }
 711                 ps->num_proc = 1;
 712         }
 713
 714         /* Leave the rest at zero if this is only a zombi */
 715         if (ps->num_proc == 0)
 716         {
 717                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 718                                 "name = %s;", pid, ps->name);
 719                 return (0);
 720         }
 721
 722         cpu_user_counter   = atoll (fields[13]);
 723         cpu_system_counter = atoll (fields[14]);
 724         vmem_size          = atoll (fields[22]);
 725         vmem_rss           = atoll (fields[23]);
 726         ps->vmem_minflt_counter = atol (fields[9]);
 727         ps->vmem_majflt_counter = atol (fields[11]);
 728
 729         {
 730                 unsigned long long stack_start = atoll (fields[27]);
 731                 unsigned long long stack_ptr   = atoll (fields[28]);
 732
 733                 stack_size = (stack_start > stack_ptr)
 734                         ? stack_start - stack_ptr
 735                         : stack_ptr - stack_start;
 736         }
 737
 738         /* Convert jiffies to useconds */
 739         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 740         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 741         vmem_rss = vmem_rss * pagesize_g;
 742
 743         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 744         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 745         ps->vmem_size = (unsigned long) vmem_size;
 746         ps->vmem_rss = (unsigned long) vmem_rss;
 747         ps->stack_size = (unsigned long) stack_size;
 748
 749         /* success */
 750         return (0);
 751 } /* int ps_read_process (...) */
 752
 753 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
 754 {
 755         char  *buf_ptr;
 756         size_t len;
 757
 758         char file[PATH_MAX];
 759         int  fd;
 760
 761         size_t n;
 762
 763         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
 764                 return NULL;
 765
 766         ssnprintf (file, sizeof (file), "/proc/%u/cmdline", pid);
 767
 768         fd = open (file, O_RDONLY);
 769         if (fd < 0) {
 770                 char errbuf[4096];
 771                 WARNING ("processes plugin: Failed to open `%s': %s.", file,
 772                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 773                 return NULL;
 774         }
 775
 776         buf_ptr = buf;
 777         len     = buf_len;
 778
 779         n = 0;
 780
 781         while (42) {
 782                 ssize_t status;
 783
 784                 status = read (fd, (void *)buf_ptr, len);
 785
 786                 if (status < 0) {
 787                         char errbuf[4096];
 788
 789                         if ((EAGAIN == errno) || (EINTR == errno))
 790                                 continue;
 791
 792                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
 793                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 794                         close (fd);
 795                         return NULL;
 796                 }
 797
 798                 n += status;
 799
 800                 if (status == 0)
 801                         break;
 802
 803                 buf_ptr += status;
 804                 len     -= status;
 805
 806                 if (len <= 0)
 807                         break;
 808         }
 809
 810         close (fd);
 811
 812         if (0 == n) {
 813                 /* cmdline not available; e.g. kernel thread, zombie */
 814                 if (NULL == name)
 815                         return NULL;
 816
 817                 ssnprintf (buf, buf_len, "[%s]", name);
 818                 return buf;
 819         }
 820
 821         assert (n <= buf_len);
 822
 823         if (n == buf_len)
 824                 --n;
 825         buf[n] = '\0';
 826
 827         --n;
 828         /* remove trailing whitespace */
 829         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
 830                 buf[n] = '\0';
 831                 --n;
 832         }
 833
 834         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
 835         while (n > 0) {
 836                 if ('\0' == buf[n])
 837                         buf[n] = ' ';
 838                 --n;
 839         }
 840         return buf;
 841 } /* char *ps_get_cmdline (...) */
 842
 843 static unsigned long read_fork_rate ()
 844 {
 845         FILE *proc_stat;
 846         char buf[1024];
 847         unsigned long result = 0;
 848         int numfields;
 849         char *fields[3];
 850
 851         proc_stat = fopen("/proc/stat", "r");
 852         if (proc_stat == NULL) {
 853                 char errbuf[1024];
 854                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
 855                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 856                 return ULONG_MAX;
 857         }
 858
 859         while (fgets (buf, sizeof(buf), proc_stat) != NULL)
 860         {
 861                 char *endptr;
 862
 863                 numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE (fields));
 864                 if (numfields != 2) {
 865                         ERROR ("processes plugin: processes in /proc/stat "
 866                                         "contains more than 2 fields.");
 867                         continue;
 868                 }
 869                 if (strcmp ("processes", fields[0]) != 0)
 870                         continue;
 871
 872                 errno = 0;
 873                 endptr = NULL;
 874                 result = strtoul(fields[1], &endptr, 10);
 875                 if ((endptr == fields[1]) || (errno != 0)) {
 876                         ERROR ("processes plugin: Cannot parse fork rate: %s",
 877                                         fields[1]);
 878                         result = ULONG_MAX;
 879                         break;
 880                 }
 881
 882                 break;
 883         }
 884
 885         fclose(proc_stat);
 886
 887         return result;
 888 }
 889
 890 static void ps_submit_fork_rate (unsigned long value)
 891 {
 892         value_t values[1];
 893         value_list_t vl = VALUE_LIST_INIT;
 894
 895         values[0].derive = (derive_t) value;
 896
 897         vl.values = values;
 898         vl.values_len = 1;
 899         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 900         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 901         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 902         sstrncpy (vl.type, "fork_rate", sizeof (vl.type));
 903         sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
 904
 905         plugin_dispatch_values (&vl);
 906 }
 907
 908 #endif /* KERNEL_LINUX */
 909
 910 #if HAVE_THREAD_INFO
 911 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 912 {
 913         int mib[4];
 914
 915         struct kinfo_proc kp;
 916         size_t            kp_size;
 917
 918         mib[0] = CTL_KERN;
 919         mib[1] = KERN_PROC;
 920         mib[2] = KERN_PROC_PID;
 921
 922         if (pid_for_task (t, pid) != KERN_SUCCESS)
 923                 return (-1);
 924         mib[3] = *pid;
 925
 926         kp_size = sizeof (kp);
 927         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 928                 return (-1);
 929
 930         if (name_max_len > (MAXCOMLEN + 1))
 931                 name_max_len = MAXCOMLEN + 1;
 932
 933         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 934         name[name_max_len - 1] = '\0';
 935
 936         DEBUG ("pid = %i; name = %s;", *pid, name);
 937
 938         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 939          * `top' does it, because it is a lot of work and only used when
 940          * debugging. -octo */
 941
 942         return (0);
 943 }
 944 #endif /* HAVE_THREAD_INFO */
 945 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 946
 947 /* do actual readings from kernel */
 948 static int ps_read (void)
 949 {
 950 #if HAVE_THREAD_INFO
 951         kern_return_t            status;
 952
 953         int                      pset;
 954         processor_set_t          port_pset_priv;
 955
 956         int                      task;
 957         task_array_t             task_list;
 958         mach_msg_type_number_t   task_list_len;
 959
 960         int                      task_pid;
 961         char                     task_name[MAXCOMLEN + 1];
 962
 963         int                      thread;
 964         thread_act_array_t       thread_list;
 965         mach_msg_type_number_t   thread_list_len;
 966         thread_basic_info_data_t thread_data;
 967         mach_msg_type_number_t   thread_data_len;
 968
 969         int running  = 0;
 970         int sleeping = 0;
 971         int zombies  = 0;
 972         int stopped  = 0;
 973         int blocked  = 0;
 974
 975         procstat_t *ps;
 976         procstat_entry_t pse;
 977
 978         ps_list_reset ();
 979
 980         /*
 981          * The Mach-concept is a little different from the traditional UNIX
 982          * concept: All the work is done in threads. Threads are contained in
 983          * `tasks'. Therefore, `task status' doesn't make much sense, since
 984          * it's actually a `thread status'.
 985          * Tasks are assigned to sets of processors, so that's where you go to
 986          * get a list.
 987          */
 988         for (pset = 0; pset < pset_list_len; pset++)
 989         {
 990                 if ((status = host_processor_set_priv (port_host_self,
 991                                                 pset_list[pset],
 992                                                 &port_pset_priv)) != KERN_SUCCESS)
 993                 {
 994                         ERROR ("host_processor_set_priv failed: %s\n",
 995                                         mach_error_string (status));
 996                         continue;
 997                 }
 998
 999                 if ((status = processor_set_tasks (port_pset_priv,
1000                                                 &task_list,
1001                                                 &task_list_len)) != KERN_SUCCESS)
1002                 {
1003                         ERROR ("processor_set_tasks failed: %s\n",
1004                                         mach_error_string (status));
1005                         mach_port_deallocate (port_task_self, port_pset_priv);
1006                         continue;
1007                 }
1008
1009                 for (task = 0; task < task_list_len; task++)
1010                 {
1011                         ps = NULL;
1012                         if (mach_get_task_name (task_list[task],
1013                                                 &task_pid,
1014                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1015                         {
1016                                 /* search for at least one match */
1017                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1018                                         /* FIXME: cmdline should be here instead of NULL */
1019                                         if (ps_list_match (task_name, NULL, ps) == 1)
1020                                                 break;
1021                         }
1022
1023                         /* Collect more detailed statistics for this process */
1024                         if (ps != NULL)
1025                         {
1026                                 task_basic_info_data_t        task_basic_info;
1027                                 mach_msg_type_number_t        task_basic_info_len;
1028                                 task_events_info_data_t       task_events_info;
1029                                 mach_msg_type_number_t        task_events_info_len;
1030                                 task_absolutetime_info_data_t task_absolutetime_info;
1031                                 mach_msg_type_number_t        task_absolutetime_info_len;
1032
1033                                 memset (&pse, '\0', sizeof (pse));
1034                                 pse.id = task_pid;
1035
1036                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1037                                 status = task_info (task_list[task],
1038                                                 TASK_BASIC_INFO,
1039                                                 (task_info_t) &task_basic_info,
1040                                                 &task_basic_info_len);
1041                                 if (status != KERN_SUCCESS)
1042                                 {
1043                                         ERROR ("task_info failed: %s",
1044                                                         mach_error_string (status));
1045                                         continue; /* with next thread_list */
1046                                 }
1047
1048                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1049                                 status = task_info (task_list[task],
1050                                                 TASK_EVENTS_INFO,
1051                                                 (task_info_t) &task_events_info,
1052                                                 &task_events_info_len);
1053                                 if (status != KERN_SUCCESS)
1054                                 {
1055                                         ERROR ("task_info failed: %s",
1056                                                         mach_error_string (status));
1057                                         continue; /* with next thread_list */
1058                                 }
1059
1060                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1061                                 status = task_info (task_list[task],
1062                                                 TASK_ABSOLUTETIME_INFO,
1063                                                 (task_info_t) &task_absolutetime_info,
1064                                                 &task_absolutetime_info_len);
1065                                 if (status != KERN_SUCCESS)
1066                                 {
1067                                         ERROR ("task_info failed: %s",
1068                                                         mach_error_string (status));
1069                                         continue; /* with next thread_list */
1070                                 }
1071
1072                                 pse.num_proc++;
1073                                 pse.vmem_rss = task_basic_info.resident_size;
1074
1075                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1076                                 pse.vmem_majflt_counter = task_events_info.faults;
1077
1078                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1079                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1080                         }
1081
1082                         status = task_threads (task_list[task], &thread_list,
1083                                         &thread_list_len);
1084                         if (status != KERN_SUCCESS)
1085                         {
1086                                 /* Apple's `top' treats this case a zombie. It
1087                                  * makes sense to some extend: A `zombie'
1088                                  * thread is nonsense, since the task/process
1089                                  * is dead. */
1090                                 zombies++;
1091                                 DEBUG ("task_threads failed: %s",
1092                                                 mach_error_string (status));
1093                                 if (task_list[task] != port_task_self)
1094                                         mach_port_deallocate (port_task_self,
1095                                                         task_list[task]);
1096                                 continue; /* with next task_list */
1097                         }
1098
1099                         for (thread = 0; thread < thread_list_len; thread++)
1100                         {
1101                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1102                                 status = thread_info (thread_list[thread],
1103                                                 THREAD_BASIC_INFO,
1104                                                 (thread_info_t) &thread_data,
1105                                                 &thread_data_len);
1106                                 if (status != KERN_SUCCESS)
1107                                 {
1108                                         ERROR ("thread_info failed: %s",
1109                                                         mach_error_string (status));
1110                                         if (task_list[task] != port_task_self)
1111                                                 mach_port_deallocate (port_task_self,
1112                                                                 thread_list[thread]);
1113                                         continue; /* with next thread_list */
1114                                 }
1115
1116                                 if (ps != NULL)
1117                                         pse.num_lwp++;
1118
1119                                 switch (thread_data.run_state)
1120                                 {
1121                                         case TH_STATE_RUNNING:
1122                                                 running++;
1123                                                 break;
1124                                         case TH_STATE_STOPPED:
1125                                         /* What exactly is `halted'? */
1126                                         case TH_STATE_HALTED:
1127                                                 stopped++;
1128                                                 break;
1129                                         case TH_STATE_WAITING:
1130                                                 sleeping++;
1131                                                 break;
1132                                         case TH_STATE_UNINTERRUPTIBLE:
1133                                                 blocked++;
1134                                                 break;
1135                                         /* There is no `zombie' case here,
1136                                          * since there are no zombie-threads.
1137                                          * There's only zombie tasks, which are
1138                                          * handled above. */
1139                                         default:
1140                                                 WARNING ("Unknown thread status: %i",
1141                                                                 thread_data.run_state);
1142                                                 break;
1143                                 } /* switch (thread_data.run_state) */
1144
1145                                 if (task_list[task] != port_task_self)
1146                                 {
1147                                         status = mach_port_deallocate (port_task_self,
1148                                                         thread_list[thread]);
1149                                         if (status != KERN_SUCCESS)
1150                                                 ERROR ("mach_port_deallocate failed: %s",
1151                                                                 mach_error_string (status));
1152                                 }
1153                         } /* for (thread_list) */
1154
1155                         if ((status = vm_deallocate (port_task_self,
1156                                                         (vm_address_t) thread_list,
1157                                                         thread_list_len * sizeof (thread_act_t)))
1158                                         != KERN_SUCCESS)
1159                         {
1160                                 ERROR ("vm_deallocate failed: %s",
1161                                                 mach_error_string (status));
1162                         }
1163                         thread_list = NULL;
1164                         thread_list_len = 0;
1165
1166                         /* Only deallocate the task port, if it isn't our own.
1167                          * Don't know what would happen in that case, but this
1168                          * is what Apple's top does.. ;) */
1169                         if (task_list[task] != port_task_self)
1170                         {
1171                                 status = mach_port_deallocate (port_task_self,
1172                                                 task_list[task]);
1173                                 if (status != KERN_SUCCESS)
1174                                         ERROR ("mach_port_deallocate failed: %s",
1175                                                         mach_error_string (status));
1176                         }
1177
1178                         if (ps != NULL)
1179                                 /* FIXME: cmdline should be here instead of NULL */
1180                                 ps_list_add (task_name, NULL, &pse);
1181                 } /* for (task_list) */
1182
1183                 if ((status = vm_deallocate (port_task_self,
1184                                 (vm_address_t) task_list,
1185                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1186                 {
1187                         ERROR ("vm_deallocate failed: %s",
1188                                         mach_error_string (status));
1189                 }
1190                 task_list = NULL;
1191                 task_list_len = 0;
1192
1193                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1194                                 != KERN_SUCCESS)
1195                 {
1196                         ERROR ("mach_port_deallocate failed: %s",
1197                                         mach_error_string (status));
1198                 }
1199         } /* for (pset_list) */
1200
1201         ps_submit_state ("running", running);
1202         ps_submit_state ("sleeping", sleeping);
1203         ps_submit_state ("zombies", zombies);
1204         ps_submit_state ("stopped", stopped);
1205         ps_submit_state ("blocked", blocked);
1206
1207         for (ps = list_head_g; ps != NULL; ps = ps->next)
1208                 ps_submit_proc_list (ps);
1209 /* #endif HAVE_THREAD_INFO */
1210
1211 #elif KERNEL_LINUX
1212         int running  = 0;
1213         int sleeping = 0;
1214         int zombies  = 0;
1215         int stopped  = 0;
1216         int paging   = 0;
1217         int blocked  = 0;
1218
1219         struct dirent *ent;
1220         DIR           *proc;
1221         int            pid;
1222
1223         char cmdline[ARG_MAX];
1224
1225         int        status;
1226         procstat_t ps;
1227         procstat_entry_t pse;
1228         char       state;
1229
1230         unsigned long fork_rate;
1231
1232         procstat_t *ps_ptr;
1233
1234         running = sleeping = zombies = stopped = paging = blocked = 0;
1235         ps_list_reset ();
1236
1237         if ((proc = opendir ("/proc")) == NULL)
1238         {
1239                 char errbuf[1024];
1240                 ERROR ("Cannot open `/proc': %s",
1241                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1242                 return (-1);
1243         }
1244
1245         while ((ent = readdir (proc)) != NULL)
1246         {
1247                 if (!isdigit (ent->d_name[0]))
1248                         continue;
1249
1250                 if ((pid = atoi (ent->d_name)) < 1)
1251                         continue;
1252
1253                 status = ps_read_process (pid, &ps, &state);
1254                 if (status != 0)
1255                 {
1256                         DEBUG ("ps_read_process failed: %i", status);
1257                         continue;
1258                 }
1259
1260                 pse.id       = pid;
1261                 pse.age      = 0;
1262
1263                 pse.num_proc   = ps.num_proc;
1264                 pse.num_lwp    = ps.num_lwp;
1265                 pse.vmem_size  = ps.vmem_size;
1266                 pse.vmem_rss   = ps.vmem_rss;
1267                 pse.stack_size = ps.stack_size;
1268
1269                 pse.vmem_minflt = 0;
1270                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1271                 pse.vmem_majflt = 0;
1272                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1273
1274                 pse.cpu_user = 0;
1275                 pse.cpu_user_counter = ps.cpu_user_counter;
1276                 pse.cpu_system = 0;
1277                 pse.cpu_system_counter = ps.cpu_system_counter;
1278
1279                 switch (state)
1280                 {
1281                         case 'R': running++;  break;
1282                         case 'S': sleeping++; break;
1283                         case 'D': blocked++;  break;
1284                         case 'Z': zombies++;  break;
1285                         case 'T': stopped++;  break;
1286                         case 'W': paging++;   break;
1287                 }
1288
1289                 ps_list_add (ps.name,
1290                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1291                                 &pse);
1292         }
1293
1294         closedir (proc);
1295
1296         ps_submit_state ("running",  running);
1297         ps_submit_state ("sleeping", sleeping);
1298         ps_submit_state ("zombies",  zombies);
1299         ps_submit_state ("stopped",  stopped);
1300         ps_submit_state ("paging",   paging);
1301         ps_submit_state ("blocked",  blocked);
1302
1303         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1304                 ps_submit_proc_list (ps_ptr);
1305
1306         fork_rate = read_fork_rate();
1307         if (fork_rate != ULONG_MAX)
1308                 ps_submit_fork_rate(fork_rate);
1309 /* #endif KERNEL_LINUX */
1310
1311 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1312         int running  = 0;
1313         int sleeping = 0;
1314         int zombies  = 0;
1315         int stopped  = 0;
1316         int blocked  = 0;
1317         int idle     = 0;
1318         int wait     = 0;
1319
1320         kvm_t *kd;
1321         char errbuf[1024];
1322         char cmdline[ARG_MAX];
1323         char *cmdline_ptr;
1324         struct kinfo_proc *procs;          /* array of processes */
1325         char **argv;
1326         int count;                         /* returns number of processes */
1327         int i;
1328
1329         procstat_t *ps_ptr;
1330         procstat_entry_t pse;
1331
1332         ps_list_reset ();
1333
1334         /* Open the kvm interface, get a descriptor */
1335         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
1336         if (kd == NULL)
1337         {
1338                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1339                                 errbuf);
1340                 return (0);
1341         }
1342
1343         /* Get the list of processes. */
1344         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1345         if (procs == NULL)
1346         {
1347                 kvm_close (kd);
1348                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1349                                 kvm_geterr(kd));
1350                 return (0);
1351         }
1352
1353         /* Iterate through the processes in kinfo_proc */
1354         for (i = 0; i < count; i++)
1355         {
1356                 /* retrieve the arguments */
1357                 cmdline[0] = 0;
1358                 cmdline_ptr = NULL;
1359
1360                 argv = kvm_getargv (kd, (const struct kinfo_proc *) &(procs[i]), 0);
1361                 if (argv != NULL)
1362                 {
1363                         int status;
1364                         int argc;
1365
1366                         argc = 0;
1367                         while (argv[argc] != NULL)
1368                                 argc++;
1369
1370                         status = strjoin (cmdline, sizeof (cmdline),
1371                                         argv, argc, " ");
1372
1373                         if (status < 0)
1374                         {
1375                                 WARNING ("processes plugin: Command line did "
1376                                                 "not fit into buffer.");
1377                         }
1378                         else
1379                         {
1380                                 cmdline_ptr = &cmdline[0];
1381                         }
1382                 }
1383
1384                 pse.id       = procs[i].ki_pid;
1385                 pse.age      = 0;
1386
1387                 pse.num_proc = 1;
1388                 pse.num_lwp  = procs[i].ki_numthreads;
1389
1390                 pse.vmem_size = procs[i].ki_size;
1391                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1392                 pse.stack_size = procs[i].ki_ssize * getpagesize();
1393                 pse.vmem_minflt = 0;
1394                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1395                 pse.vmem_majflt = 0;
1396                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1397
1398                 pse.cpu_user = 0;
1399                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec
1400                         * 1000
1401                         + procs[i].ki_rusage.ru_utime.tv_usec;
1402                 pse.cpu_system = 0;
1403                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec
1404                         * 1000
1405                         + procs[i].ki_rusage.ru_stime.tv_usec;
1406
1407                 switch (procs[i].ki_stat)
1408                 {
1409                         case SSTOP:     stopped++;      break;
1410                         case SSLEEP:    sleeping++;     break;
1411                         case SRUN:      running++;      break;
1412                         case SIDL:      idle++;         break;
1413                         case SWAIT:     wait++;         break;
1414                         case SLOCK:     blocked++;      break;
1415                         case SZOMB:     zombies++;      break;
1416                 }
1417
1418                 ps_list_add (procs[i].ki_comm, cmdline_ptr, &pse);
1419         }
1420
1421         kvm_close(kd);
1422
1423         ps_submit_state ("running",  running);
1424         ps_submit_state ("sleeping", sleeping);
1425         ps_submit_state ("zombies",  zombies);
1426         ps_submit_state ("stopped",  stopped);
1427         ps_submit_state ("blocked",  blocked);
1428         ps_submit_state ("idle",     idle);
1429         ps_submit_state ("wait",     wait);
1430
1431         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1432                 ps_submit_proc_list (ps_ptr);
1433 #endif /* HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
1434
1435         return (0);
1436 } /* int ps_read */
1437
1438 void module_register (void)
1439 {
1440         plugin_register_config ("processes", ps_config,
1441                         config_keys, config_keys_num);
1442         plugin_register_init ("processes", ps_init);
1443         plugin_register_read ("processes", ps_read);
1444 } /* void module_register */