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         /* io data */
 140         long io_rchar;
 141         long io_wchar;
 142         long io_syscr;
 143         long io_syscw;
 144
 145         struct procstat_entry_s *next;
 146 } procstat_entry_t;
 147
 148 #define PROCSTAT_NAME_LEN 256
 149 typedef struct procstat
 150 {
 151         char          name[PROCSTAT_NAME_LEN];
 152 #if HAVE_REGEX_H
 153         regex_t *re;
 154 #endif
 155
 156         unsigned long num_proc;
 157         unsigned long num_lwp;
 158         unsigned long vmem_size;
 159         unsigned long vmem_rss;
 160         unsigned long stack_size;
 161
 162         unsigned long vmem_minflt_counter;
 163         unsigned long vmem_majflt_counter;
 164
 165         unsigned long cpu_user_counter;
 166         unsigned long cpu_system_counter;
 167
 168         /* io data */
 169         long io_rchar;
 170         long io_wchar;
 171         long io_syscr;
 172         long io_syscw;
 173
 174         struct procstat   *next;
 175         struct procstat_entry_s *instances;
 176 } procstat_t;
 177
 178 static procstat_t *list_head_g = NULL;
 179
 180 #if HAVE_THREAD_INFO
 181 static mach_port_t port_host_self;
 182 static mach_port_t port_task_self;
 183
 184 static processor_set_name_array_t pset_list;
 185 static mach_msg_type_number_t     pset_list_len;
 186 /* #endif HAVE_THREAD_INFO */
 187
 188 #elif KERNEL_LINUX
 189 static long pagesize_g;
 190 /* #endif KERNEL_LINUX */
 191
 192 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 193 /* no global variables */
 194 #endif /* HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 195
 196 /* put name of process from config to list_head_g tree
 197    list_head_g is a list of 'procstat_t' structs with
 198    processes names we want to watch */
 199 static void ps_list_register (const char *name, const char *regexp)
 200 {
 201         procstat_t *new;
 202         procstat_t *ptr;
 203         int status;
 204
 205         new = (procstat_t *) malloc (sizeof (procstat_t));
 206         if (new == NULL)
 207         {
 208                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 209                 return;
 210         }
 211         memset (new, 0, sizeof (procstat_t));
 212         sstrncpy (new->name, name, sizeof (new->name));
 213
 214 #if HAVE_REGEX_H
 215         if (regexp != NULL)
 216         {
 217                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 218                 new->re = (regex_t *) malloc (sizeof (regex_t));
 219                 if (new->re == NULL)
 220                 {
 221                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 222                         sfree (new);
 223                         return;
 224                 }
 225
 226                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 227                 if (status != 0)
 228                 {
 229                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 230                         sfree(new->re);
 231                         return;
 232                 }
 233         }
 234 #else
 235         if (regexp != NULL)
 236         {
 237                 ERROR ("processes plugin: ps_list_register: "
 238                                 "Regular expression \"%s\" found in config "
 239                                 "file, but support for regular expressions "
 240                                 "has been dispabled at compile time.",
 241                                 regexp);
 242                 sfree (new);
 243                 return;
 244         }
 245 #endif
 246
 247         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 248         {
 249                 if (strcmp (ptr->name, name) == 0)
 250                 {
 251                         WARNING ("processes plugin: You have configured more "
 252                                         "than one `Process' or "
 253                                         "`ProcessMatch' with the same name. "
 254                                         "All but the first setting will be "
 255                                         "ignored.");
 256                         sfree (new->re);
 257                         sfree (new);
 258                         return;
 259                 }
 260
 261                 if (ptr->next == NULL)
 262                         break;
 263         }
 264
 265         if (ptr == NULL)
 266                 list_head_g = new;
 267         else
 268                 ptr->next = new;
 269 } /* void ps_list_register */
 270
 271 /* try to match name against entry, returns 1 if success */
 272 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 273 {
 274 #if HAVE_REGEX_H
 275         if (ps->re != NULL)
 276         {
 277                 int status;
 278                 const char *str;
 279
 280                 str = cmdline;
 281                 if ((str == NULL) || (str[0] == 0))
 282                         str = name;
 283
 284                 assert (str != NULL);
 285
 286                 status = regexec (ps->re, str,
 287                                 /* nmatch = */ 0,
 288                                 /* pmatch = */ NULL,
 289                                 /* eflags = */ 0);
 290                 if (status == 0)
 291                         return (1);
 292         }
 293         else
 294 #endif
 295         if (strcmp (ps->name, name) == 0)
 296                 return (1);
 297
 298         return (0);
 299 } /* int ps_list_match */
 300
 301 /* add process entry to 'instances' of process 'name' (or refresh it) */
 302 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 303 {
 304         procstat_t *ps;
 305         procstat_entry_t *pse;
 306
 307         if (entry->id == 0)
 308                 return;
 309
 310         for (ps = list_head_g; ps != NULL; ps = ps->next)
 311         {
 312                 if ((ps_list_match (name, cmdline, ps)) == 0)
 313                         continue;
 314
 315                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 316                         if ((pse->id == entry->id) || (pse->next == NULL))
 317                                 break;
 318
 319                 if ((pse == NULL) || (pse->id != entry->id))
 320                 {
 321                         procstat_entry_t *new;
 322
 323                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 324                         if (new == NULL)
 325                                 return;
 326                         memset (new, 0, sizeof (procstat_entry_t));
 327                         new->id = entry->id;
 328
 329                         if (pse == NULL)
 330                                 ps->instances = new;
 331                         else
 332                                 pse->next = new;
 333
 334                         pse = new;
 335                 }
 336
 337                 pse->age = 0;
 338                 pse->num_proc   = entry->num_proc;
 339                 pse->num_lwp    = entry->num_lwp;
 340                 pse->vmem_size  = entry->vmem_size;
 341                 pse->vmem_rss   = entry->vmem_rss;
 342                 pse->stack_size = entry->stack_size;
 343                 pse->io_rchar   = entry->io_rchar;
 344                 pse->io_wchar   = entry->io_wchar;
 345                 pse->io_syscr   = entry->io_syscr;
 346                 pse->io_syscw   = entry->io_syscw;
 347
 348                 ps->num_proc   += pse->num_proc;
 349                 ps->num_lwp    += pse->num_lwp;
 350                 ps->vmem_size  += pse->vmem_size;
 351                 ps->vmem_rss   += pse->vmem_rss;
 352                 ps->stack_size += pse->stack_size;
 353
 354                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 355                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 356                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 357                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 358
 359                 if ((entry->vmem_minflt_counter == 0)
 360                                 && (entry->vmem_majflt_counter == 0))
 361                 {
 362                         pse->vmem_minflt_counter += entry->vmem_minflt;
 363                         pse->vmem_minflt = entry->vmem_minflt;
 364
 365                         pse->vmem_majflt_counter += entry->vmem_majflt;
 366                         pse->vmem_majflt = entry->vmem_majflt;
 367                 }
 368                 else
 369                 {
 370                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 371                         {
 372                                 pse->vmem_minflt = entry->vmem_minflt_counter
 373                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 374                         }
 375                         else
 376                         {
 377                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 378                         }
 379                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 380
 381                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 382                         {
 383                                 pse->vmem_majflt = entry->vmem_majflt_counter
 384                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 385                         }
 386                         else
 387                         {
 388                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 389                         }
 390                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 391                 }
 392
 393                 ps->vmem_minflt_counter += pse->vmem_minflt;
 394                 ps->vmem_majflt_counter += pse->vmem_majflt;
 395
 396                 if ((entry->cpu_user_counter == 0)
 397                                 && (entry->cpu_system_counter == 0))
 398                 {
 399                         pse->cpu_user_counter += entry->cpu_user;
 400                         pse->cpu_user = entry->cpu_user;
 401
 402                         pse->cpu_system_counter += entry->cpu_system;
 403                         pse->cpu_system = entry->cpu_system;
 404                 }
 405                 else
 406                 {
 407                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 408                         {
 409                                 pse->cpu_user = entry->cpu_user_counter
 410                                         + (ULONG_MAX - pse->cpu_user_counter);
 411                         }
 412                         else
 413                         {
 414                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 415                         }
 416                         pse->cpu_user_counter = entry->cpu_user_counter;
 417
 418                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 419                         {
 420                                 pse->cpu_system = entry->cpu_system_counter
 421                                         + (ULONG_MAX - pse->cpu_system_counter);
 422                         }
 423                         else
 424                         {
 425                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 426                         }
 427                         pse->cpu_system_counter = entry->cpu_system_counter;
 428                 }
 429
 430                 ps->cpu_user_counter   += pse->cpu_user;
 431                 ps->cpu_system_counter += pse->cpu_system;
 432         }
 433 }
 434
 435 /* remove old entries from instances of processes in list_head_g */
 436 static void ps_list_reset (void)
 437 {
 438         procstat_t *ps;
 439         procstat_entry_t *pse;
 440         procstat_entry_t *pse_prev;
 441
 442         for (ps = list_head_g; ps != NULL; ps = ps->next)
 443         {
 444                 ps->num_proc    = 0;
 445                 ps->num_lwp     = 0;
 446                 ps->vmem_size   = 0;
 447                 ps->vmem_rss    = 0;
 448                 ps->stack_size  = 0;
 449                 ps->io_rchar = -1;
 450                 ps->io_wchar = -1;
 451                 ps->io_syscr = -1;
 452                 ps->io_syscw = -1;
 453
 454                 pse_prev = NULL;
 455                 pse = ps->instances;
 456                 while (pse != NULL)
 457                 {
 458                         if (pse->age > 10)
 459                         {
 460                                 DEBUG ("Removing this procstat entry cause it's too old: "
 461                                                 "id = %lu; name = %s;",
 462                                                 pse->id, ps->name);
 463
 464                                 if (pse_prev == NULL)
 465                                 {
 466                                         ps->instances = pse->next;
 467                                         free (pse);
 468                                         pse = ps->instances;
 469                                 }
 470                                 else
 471                                 {
 472                                         pse_prev->next = pse->next;
 473                                         free (pse);
 474                                         pse = pse_prev->next;
 475                                 }
 476                         }
 477                         else
 478                         {
 479                                 pse->age++;
 480                                 pse_prev = pse;
 481                                 pse = pse->next;
 482                         }
 483                 } /* while (pse != NULL) */
 484         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 485 }
 486
 487 /* put all pre-defined 'Process' names from config to list_head_g tree */
 488 static int ps_config (const char *key, const char *value)
 489 {
 490         if (strcasecmp (key, "Process") == 0)
 491         {
 492                 ps_list_register (value, NULL);
 493         }
 494         else if (strcasecmp (key, "ProcessMatch") == 0)
 495         {
 496                 char *new_val;
 497                 char *fields[3];
 498                 int fields_num;
 499
 500                 new_val = strdup (value);
 501                 if (new_val == NULL) {
 502                         ERROR ("processes plugin: strdup failed when processing "
 503                                         "`ProcessMatch %s'.", value);
 504                         return (1);
 505                 }
 506
 507                 fields_num = strsplit (new_val, fields,
 508                                 STATIC_ARRAY_SIZE (fields));
 509                 if (fields_num != 2)
 510                 {
 511                         ERROR ("processes plugin: `ProcessMatch' needs exactly "
 512                                         "two string arguments.");
 513                         sfree (new_val);
 514                         return (1);
 515                 }
 516                 ps_list_register (fields[0], fields[1]);
 517                 sfree (new_val);
 518         }
 519         else
 520         {
 521                 ERROR ("processes plugin: The `%s' configuration option is not "
 522                                 "understood and will be ignored.", key);
 523                 return (-1);
 524         }
 525
 526         return (0);
 527 }
 528
 529 static int ps_init (void)
 530 {
 531 #if HAVE_THREAD_INFO
 532         kern_return_t status;
 533
 534         port_host_self = mach_host_self ();
 535         port_task_self = mach_task_self ();
 536
 537         if (pset_list != NULL)
 538         {
 539                 vm_deallocate (port_task_self,
 540                                 (vm_address_t) pset_list,
 541                                 pset_list_len * sizeof (processor_set_t));
 542                 pset_list = NULL;
 543                 pset_list_len = 0;
 544         }
 545
 546         if ((status = host_processor_sets (port_host_self,
 547                                         &pset_list,
 548                                         &pset_list_len)) != KERN_SUCCESS)
 549         {
 550                 ERROR ("host_processor_sets failed: %s\n",
 551                                 mach_error_string (status));
 552                 pset_list = NULL;
 553                 pset_list_len = 0;
 554                 return (-1);
 555         }
 556 /* #endif HAVE_THREAD_INFO */
 557
 558 #elif KERNEL_LINUX
 559         pagesize_g = sysconf(_SC_PAGESIZE);
 560         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 561                         pagesize_g, CONFIG_HZ);
 562 /* #endif KERNEL_LINUX */
 563
 564 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 565 /* no initialization */
 566 #endif /* HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 567
 568         return (0);
 569 } /* int ps_init */
 570
 571 /* submit global state (e.g.: qty of zombies, running, etc..) */
 572 static void ps_submit_state (const char *state, double value)
 573 {
 574         value_t values[1];
 575         value_list_t vl = VALUE_LIST_INIT;
 576
 577         values[0].gauge = value;
 578
 579         vl.values = values;
 580         vl.values_len = 1;
 581         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 582         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 583         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 584         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 585         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 586
 587         plugin_dispatch_values (&vl);
 588 }
 589
 590 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 591 static void ps_submit_proc_list (procstat_t *ps)
 592 {
 593         value_t values[2];
 594         value_list_t vl = VALUE_LIST_INIT;
 595
 596         vl.values = values;
 597         vl.values_len = 2;
 598         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 599         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 600         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 601
 602         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 603         vl.values[0].gauge = ps->vmem_size;
 604         vl.values_len = 1;
 605         plugin_dispatch_values (&vl);
 606
 607         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 608         vl.values[0].gauge = ps->vmem_rss;
 609         vl.values_len = 1;
 610         plugin_dispatch_values (&vl);
 611
 612         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 613         vl.values[0].gauge = ps->stack_size;
 614         vl.values_len = 1;
 615         plugin_dispatch_values (&vl);
 616
 617         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 618         vl.values[0].counter = ps->cpu_user_counter;
 619         vl.values[1].counter = ps->cpu_system_counter;
 620         vl.values_len = 2;
 621         plugin_dispatch_values (&vl);
 622
 623         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 624         vl.values[0].gauge = ps->num_proc;
 625         vl.values[1].gauge = ps->num_lwp;
 626         vl.values_len = 2;
 627         plugin_dispatch_values (&vl);
 628
 629         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 630         vl.values[0].counter = ps->vmem_minflt_counter;
 631         vl.values[1].counter = ps->vmem_majflt_counter;
 632         vl.values_len = 2;
 633         plugin_dispatch_values (&vl);
 634
 635         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 636         {
 637                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 638                 vl.values[0].counter = ps->io_rchar;
 639                 vl.values[1].counter = ps->io_wchar;
 640                 vl.values_len = 2;
 641                 plugin_dispatch_values (&vl);
 642         }
 643
 644         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 645         {
 646                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 647                 vl.values[0].counter = ps->io_syscr;
 648                 vl.values[1].counter = ps->io_syscw;
 649                 vl.values_len = 2;
 650                 plugin_dispatch_values (&vl);
 651         }
 652
 653         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 654                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 655                         "cpu_user_counter = %lu; cpu_system_counter = %lu; "
 656                         "io_rchar = %ld; io_wchar = %ld; "
 657                         "io_syscr = %ld; io_syscw = %ld;",
 658                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 659                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 660                         ps->cpu_user_counter, ps->cpu_system_counter,
 661                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw);
 662 } /* void ps_submit_proc_list */
 663
 664 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 665 #if KERNEL_LINUX
 666 static int ps_read_tasks (int pid)
 667 {
 668         char           dirname[64];
 669         DIR           *dh;
 670         struct dirent *ent;
 671         int count = 0;
 672
 673         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 674
 675         if ((dh = opendir (dirname)) == NULL)
 676         {
 677                 DEBUG ("Failed to open directory `%s'", dirname);
 678                 return (-1);
 679         }
 680
 681         while ((ent = readdir (dh)) != NULL)
 682         {
 683                 if (!isdigit ((int) ent->d_name[0]))
 684                         continue;
 685                 else
 686                         count++;
 687         }
 688         closedir (dh);
 689
 690         return ((count >= 1) ? count : 1);
 691 } /* int *ps_read_tasks */
 692
 693 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 694 {
 695         FILE *fh;
 696         char buffer[1024];
 697         char filename[64];
 698
 699         char *fields[8];
 700         int numfields;
 701
 702         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 703         if ((fh = fopen (filename, "r")) == NULL)
 704                 return (NULL);
 705
 706         while (fgets (buffer, 1024, fh) != NULL)
 707         {
 708                 long *val = NULL;
 709
 710                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 711                         val = &(ps->io_rchar);
 712                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 713                         val = &(ps->io_wchar);
 714                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 715                         val = &(ps->io_syscr);
 716                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 717                         val = &(ps->io_syscw);
 718                 else
 719                         continue;
 720
 721                 numfields = strsplit (buffer, fields, 8);
 722
 723                 if (numfields < 2)
 724                         continue;
 725
 726                 *val = atol (fields[1]);
 727         }
 728
 729         if (fclose (fh))
 730         {
 731                 char errbuf[1024];
 732                 WARNING ("processes: fclose: %s",
 733                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 734         }
 735
 736         return (ps);
 737 } /* procstat_t *ps_read_io */
 738
 739 int ps_read_process (int pid, procstat_t *ps, char *state)
 740 {
 741         char  filename[64];
 742         char  buffer[1024];
 743
 744         char *fields[64];
 745         char  fields_len;
 746
 747         int   i;
 748
 749         int   ppid;
 750         int   name_len;
 751
 752         long long unsigned cpu_user_counter;
 753         long long unsigned cpu_system_counter;
 754         long long unsigned vmem_size;
 755         long long unsigned vmem_rss;
 756         long long unsigned stack_size;
 757
 758         memset (ps, 0, sizeof (procstat_t));
 759
 760         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 761
 762         i = read_file_contents (filename, buffer, sizeof(buffer) - 1);
 763         if (i <= 0)
 764                 return (-1);
 765         buffer[i] = 0;
 766
 767         fields_len = strsplit (buffer, fields, 64);
 768         if (fields_len < 24)
 769         {
 770                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 771                                 " `%s' has only %i fields..",
 772                                 (int) pid, filename, fields_len);
 773                 return (-1);
 774         }
 775
 776         /* copy the name, strip brackets in the process */
 777         name_len = strlen (fields[1]) - 2;
 778         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 779         {
 780                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 781                 return (-1);
 782         }
 783         fields[1] = fields[1] + 1;
 784         fields[1][name_len] = '\0';
 785         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 786
 787         ppid = atoi (fields[3]);
 788
 789         *state = fields[2][0];
 790
 791         if (*state == 'Z')
 792         {
 793                 ps->num_lwp  = 0;
 794                 ps->num_proc = 0;
 795         }
 796         else
 797         {
 798                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
 799                 {
 800                         /* returns -1 => kernel 2.4 */
 801                         ps->num_lwp = 1;
 802                 }
 803                 ps->num_proc = 1;
 804         }
 805
 806         /* Leave the rest at zero if this is only a zombi */
 807         if (ps->num_proc == 0)
 808         {
 809                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 810                                 "name = %s;", pid, ps->name);
 811                 return (0);
 812         }
 813
 814         cpu_user_counter   = atoll (fields[13]);
 815         cpu_system_counter = atoll (fields[14]);
 816         vmem_size          = atoll (fields[22]);
 817         vmem_rss           = atoll (fields[23]);
 818         ps->vmem_minflt_counter = atol (fields[9]);
 819         ps->vmem_majflt_counter = atol (fields[11]);
 820
 821         {
 822                 unsigned long long stack_start = atoll (fields[27]);
 823                 unsigned long long stack_ptr   = atoll (fields[28]);
 824
 825                 stack_size = (stack_start > stack_ptr)
 826                         ? stack_start - stack_ptr
 827                         : stack_ptr - stack_start;
 828         }
 829
 830         /* Convert jiffies to useconds */
 831         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 832         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 833         vmem_rss = vmem_rss * pagesize_g;
 834
 835         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 836         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 837         ps->vmem_size = (unsigned long) vmem_size;
 838         ps->vmem_rss = (unsigned long) vmem_rss;
 839         ps->stack_size = (unsigned long) stack_size;
 840
 841         if ( (ps_read_io (pid, ps)) == NULL)
 842         {
 843                 /* no io data */
 844                 ps->io_rchar = -1;
 845                 ps->io_wchar = -1;
 846                 ps->io_syscr = -1;
 847                 ps->io_syscw = -1;
 848
 849                 DEBUG("ps_read_process: not get io data for pid %i",pid);
 850         }
 851
 852         /* success */
 853         return (0);
 854 } /* int ps_read_process (...) */
 855
 856 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
 857 {
 858         char  *buf_ptr;
 859         size_t len;
 860
 861         char file[PATH_MAX];
 862         int  fd;
 863
 864         size_t n;
 865
 866         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
 867                 return NULL;
 868
 869         ssnprintf (file, sizeof (file), "/proc/%u/cmdline", pid);
 870
 871         fd = open (file, O_RDONLY);
 872         if (fd < 0) {
 873                 char errbuf[4096];
 874                 WARNING ("processes plugin: Failed to open `%s': %s.", file,
 875                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 876                 return NULL;
 877         }
 878
 879         buf_ptr = buf;
 880         len     = buf_len;
 881
 882         n = 0;
 883
 884         while (42) {
 885                 ssize_t status;
 886
 887                 status = read (fd, (void *)buf_ptr, len);
 888
 889                 if (status < 0) {
 890                         char errbuf[4096];
 891
 892                         if ((EAGAIN == errno) || (EINTR == errno))
 893                                 continue;
 894
 895                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
 896                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 897                         close (fd);
 898                         return NULL;
 899                 }
 900
 901                 n += status;
 902
 903                 if (status == 0)
 904                         break;
 905
 906                 buf_ptr += status;
 907                 len     -= status;
 908
 909                 if (len <= 0)
 910                         break;
 911         }
 912
 913         close (fd);
 914
 915         if (0 == n) {
 916                 /* cmdline not available; e.g. kernel thread, zombie */
 917                 if (NULL == name)
 918                         return NULL;
 919
 920                 ssnprintf (buf, buf_len, "[%s]", name);
 921                 return buf;
 922         }
 923
 924         assert (n <= buf_len);
 925
 926         if (n == buf_len)
 927                 --n;
 928         buf[n] = '\0';
 929
 930         --n;
 931         /* remove trailing whitespace */
 932         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
 933                 buf[n] = '\0';
 934                 --n;
 935         }
 936
 937         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
 938         while (n > 0) {
 939                 if ('\0' == buf[n])
 940                         buf[n] = ' ';
 941                 --n;
 942         }
 943         return buf;
 944 } /* char *ps_get_cmdline (...) */
 945
 946 static unsigned long read_fork_rate ()
 947 {
 948         FILE *proc_stat;
 949         char buf[1024];
 950         unsigned long result = 0;
 951         int numfields;
 952         char *fields[3];
 953
 954         proc_stat = fopen("/proc/stat", "r");
 955         if (proc_stat == NULL) {
 956                 char errbuf[1024];
 957                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
 958                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 959                 return ULONG_MAX;
 960         }
 961
 962         while (fgets (buf, sizeof(buf), proc_stat) != NULL)
 963         {
 964                 char *endptr;
 965
 966                 numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE (fields));
 967                 if (numfields != 2)
 968                         continue;
 969
 970                 if (strcmp ("processes", fields[0]) != 0)
 971                         continue;
 972
 973                 errno = 0;
 974                 endptr = NULL;
 975                 result = strtoul(fields[1], &endptr, 10);
 976                 if ((endptr == fields[1]) || (errno != 0)) {
 977                         ERROR ("processes plugin: Cannot parse fork rate: %s",
 978                                         fields[1]);
 979                         result = ULONG_MAX;
 980                         break;
 981                 }
 982
 983                 break;
 984         }
 985
 986         fclose(proc_stat);
 987
 988         return result;
 989 }
 990
 991 static void ps_submit_fork_rate (unsigned long value)
 992 {
 993         value_t values[1];
 994         value_list_t vl = VALUE_LIST_INIT;
 995
 996         values[0].derive = (derive_t) value;
 997
 998         vl.values = values;
 999         vl.values_len = 1;
1000         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
1001         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
1002         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
1003         sstrncpy (vl.type, "fork_rate", sizeof (vl.type));
1004         sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
1005
1006         plugin_dispatch_values (&vl);
1007 }
1008
1009 #endif /* KERNEL_LINUX */
1010
1011 #if HAVE_THREAD_INFO
1012 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1013 {
1014         int mib[4];
1015
1016         struct kinfo_proc kp;
1017         size_t            kp_size;
1018
1019         mib[0] = CTL_KERN;
1020         mib[1] = KERN_PROC;
1021         mib[2] = KERN_PROC_PID;
1022
1023         if (pid_for_task (t, pid) != KERN_SUCCESS)
1024                 return (-1);
1025         mib[3] = *pid;
1026
1027         kp_size = sizeof (kp);
1028         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1029                 return (-1);
1030
1031         if (name_max_len > (MAXCOMLEN + 1))
1032                 name_max_len = MAXCOMLEN + 1;
1033
1034         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1035         name[name_max_len - 1] = '\0';
1036
1037         DEBUG ("pid = %i; name = %s;", *pid, name);
1038
1039         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1040          * `top' does it, because it is a lot of work and only used when
1041          * debugging. -octo */
1042
1043         return (0);
1044 }
1045 #endif /* HAVE_THREAD_INFO */
1046 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1047
1048 /* do actual readings from kernel */
1049 static int ps_read (void)
1050 {
1051 #if HAVE_THREAD_INFO
1052         kern_return_t            status;
1053
1054         int                      pset;
1055         processor_set_t          port_pset_priv;
1056
1057         int                      task;
1058         task_array_t             task_list;
1059         mach_msg_type_number_t   task_list_len;
1060
1061         int                      task_pid;
1062         char                     task_name[MAXCOMLEN + 1];
1063
1064         int                      thread;
1065         thread_act_array_t       thread_list;
1066         mach_msg_type_number_t   thread_list_len;
1067         thread_basic_info_data_t thread_data;
1068         mach_msg_type_number_t   thread_data_len;
1069
1070         int running  = 0;
1071         int sleeping = 0;
1072         int zombies  = 0;
1073         int stopped  = 0;
1074         int blocked  = 0;
1075
1076         procstat_t *ps;
1077         procstat_entry_t pse;
1078
1079         ps_list_reset ();
1080
1081         /*
1082          * The Mach-concept is a little different from the traditional UNIX
1083          * concept: All the work is done in threads. Threads are contained in
1084          * `tasks'. Therefore, `task status' doesn't make much sense, since
1085          * it's actually a `thread status'.
1086          * Tasks are assigned to sets of processors, so that's where you go to
1087          * get a list.
1088          */
1089         for (pset = 0; pset < pset_list_len; pset++)
1090         {
1091                 if ((status = host_processor_set_priv (port_host_self,
1092                                                 pset_list[pset],
1093                                                 &port_pset_priv)) != KERN_SUCCESS)
1094                 {
1095                         ERROR ("host_processor_set_priv failed: %s\n",
1096                                         mach_error_string (status));
1097                         continue;
1098                 }
1099
1100                 if ((status = processor_set_tasks (port_pset_priv,
1101                                                 &task_list,
1102                                                 &task_list_len)) != KERN_SUCCESS)
1103                 {
1104                         ERROR ("processor_set_tasks failed: %s\n",
1105                                         mach_error_string (status));
1106                         mach_port_deallocate (port_task_self, port_pset_priv);
1107                         continue;
1108                 }
1109
1110                 for (task = 0; task < task_list_len; task++)
1111                 {
1112                         ps = NULL;
1113                         if (mach_get_task_name (task_list[task],
1114                                                 &task_pid,
1115                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1116                         {
1117                                 /* search for at least one match */
1118                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1119                                         /* FIXME: cmdline should be here instead of NULL */
1120                                         if (ps_list_match (task_name, NULL, ps) == 1)
1121                                                 break;
1122                         }
1123
1124                         /* Collect more detailed statistics for this process */
1125                         if (ps != NULL)
1126                         {
1127                                 task_basic_info_data_t        task_basic_info;
1128                                 mach_msg_type_number_t        task_basic_info_len;
1129                                 task_events_info_data_t       task_events_info;
1130                                 mach_msg_type_number_t        task_events_info_len;
1131                                 task_absolutetime_info_data_t task_absolutetime_info;
1132                                 mach_msg_type_number_t        task_absolutetime_info_len;
1133
1134                                 memset (&pse, '\0', sizeof (pse));
1135                                 pse.id = task_pid;
1136
1137                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1138                                 status = task_info (task_list[task],
1139                                                 TASK_BASIC_INFO,
1140                                                 (task_info_t) &task_basic_info,
1141                                                 &task_basic_info_len);
1142                                 if (status != KERN_SUCCESS)
1143                                 {
1144                                         ERROR ("task_info failed: %s",
1145                                                         mach_error_string (status));
1146                                         continue; /* with next thread_list */
1147                                 }
1148
1149                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1150                                 status = task_info (task_list[task],
1151                                                 TASK_EVENTS_INFO,
1152                                                 (task_info_t) &task_events_info,
1153                                                 &task_events_info_len);
1154                                 if (status != KERN_SUCCESS)
1155                                 {
1156                                         ERROR ("task_info failed: %s",
1157                                                         mach_error_string (status));
1158                                         continue; /* with next thread_list */
1159                                 }
1160
1161                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1162                                 status = task_info (task_list[task],
1163                                                 TASK_ABSOLUTETIME_INFO,
1164                                                 (task_info_t) &task_absolutetime_info,
1165                                                 &task_absolutetime_info_len);
1166                                 if (status != KERN_SUCCESS)
1167                                 {
1168                                         ERROR ("task_info failed: %s",
1169                                                         mach_error_string (status));
1170                                         continue; /* with next thread_list */
1171                                 }
1172
1173                                 pse.num_proc++;
1174                                 pse.vmem_rss = task_basic_info.resident_size;
1175
1176                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1177                                 pse.vmem_majflt_counter = task_events_info.faults;
1178
1179                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1180                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1181                         }
1182
1183                         status = task_threads (task_list[task], &thread_list,
1184                                         &thread_list_len);
1185                         if (status != KERN_SUCCESS)
1186                         {
1187                                 /* Apple's `top' treats this case a zombie. It
1188                                  * makes sense to some extend: A `zombie'
1189                                  * thread is nonsense, since the task/process
1190                                  * is dead. */
1191                                 zombies++;
1192                                 DEBUG ("task_threads failed: %s",
1193                                                 mach_error_string (status));
1194                                 if (task_list[task] != port_task_self)
1195                                         mach_port_deallocate (port_task_self,
1196                                                         task_list[task]);
1197                                 continue; /* with next task_list */
1198                         }
1199
1200                         for (thread = 0; thread < thread_list_len; thread++)
1201                         {
1202                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1203                                 status = thread_info (thread_list[thread],
1204                                                 THREAD_BASIC_INFO,
1205                                                 (thread_info_t) &thread_data,
1206                                                 &thread_data_len);
1207                                 if (status != KERN_SUCCESS)
1208                                 {
1209                                         ERROR ("thread_info failed: %s",
1210                                                         mach_error_string (status));
1211                                         if (task_list[task] != port_task_self)
1212                                                 mach_port_deallocate (port_task_self,
1213                                                                 thread_list[thread]);
1214                                         continue; /* with next thread_list */
1215                                 }
1216
1217                                 if (ps != NULL)
1218                                         pse.num_lwp++;
1219
1220                                 switch (thread_data.run_state)
1221                                 {
1222                                         case TH_STATE_RUNNING:
1223                                                 running++;
1224                                                 break;
1225                                         case TH_STATE_STOPPED:
1226                                         /* What exactly is `halted'? */
1227                                         case TH_STATE_HALTED:
1228                                                 stopped++;
1229                                                 break;
1230                                         case TH_STATE_WAITING:
1231                                                 sleeping++;
1232                                                 break;
1233                                         case TH_STATE_UNINTERRUPTIBLE:
1234                                                 blocked++;
1235                                                 break;
1236                                         /* There is no `zombie' case here,
1237                                          * since there are no zombie-threads.
1238                                          * There's only zombie tasks, which are
1239                                          * handled above. */
1240                                         default:
1241                                                 WARNING ("Unknown thread status: %i",
1242                                                                 thread_data.run_state);
1243                                                 break;
1244                                 } /* switch (thread_data.run_state) */
1245
1246                                 if (task_list[task] != port_task_self)
1247                                 {
1248                                         status = mach_port_deallocate (port_task_self,
1249                                                         thread_list[thread]);
1250                                         if (status != KERN_SUCCESS)
1251                                                 ERROR ("mach_port_deallocate failed: %s",
1252                                                                 mach_error_string (status));
1253                                 }
1254                         } /* for (thread_list) */
1255
1256                         if ((status = vm_deallocate (port_task_self,
1257                                                         (vm_address_t) thread_list,
1258                                                         thread_list_len * sizeof (thread_act_t)))
1259                                         != KERN_SUCCESS)
1260                         {
1261                                 ERROR ("vm_deallocate failed: %s",
1262                                                 mach_error_string (status));
1263                         }
1264                         thread_list = NULL;
1265                         thread_list_len = 0;
1266
1267                         /* Only deallocate the task port, if it isn't our own.
1268                          * Don't know what would happen in that case, but this
1269                          * is what Apple's top does.. ;) */
1270                         if (task_list[task] != port_task_self)
1271                         {
1272                                 status = mach_port_deallocate (port_task_self,
1273                                                 task_list[task]);
1274                                 if (status != KERN_SUCCESS)
1275                                         ERROR ("mach_port_deallocate failed: %s",
1276                                                         mach_error_string (status));
1277                         }
1278
1279                         if (ps != NULL)
1280                                 /* FIXME: cmdline should be here instead of NULL */
1281                                 ps_list_add (task_name, NULL, &pse);
1282                 } /* for (task_list) */
1283
1284                 if ((status = vm_deallocate (port_task_self,
1285                                 (vm_address_t) task_list,
1286                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1287                 {
1288                         ERROR ("vm_deallocate failed: %s",
1289                                         mach_error_string (status));
1290                 }
1291                 task_list = NULL;
1292                 task_list_len = 0;
1293
1294                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1295                                 != KERN_SUCCESS)
1296                 {
1297                         ERROR ("mach_port_deallocate failed: %s",
1298                                         mach_error_string (status));
1299                 }
1300         } /* for (pset_list) */
1301
1302         ps_submit_state ("running", running);
1303         ps_submit_state ("sleeping", sleeping);
1304         ps_submit_state ("zombies", zombies);
1305         ps_submit_state ("stopped", stopped);
1306         ps_submit_state ("blocked", blocked);
1307
1308         for (ps = list_head_g; ps != NULL; ps = ps->next)
1309                 ps_submit_proc_list (ps);
1310 /* #endif HAVE_THREAD_INFO */
1311
1312 #elif KERNEL_LINUX
1313         int running  = 0;
1314         int sleeping = 0;
1315         int zombies  = 0;
1316         int stopped  = 0;
1317         int paging   = 0;
1318         int blocked  = 0;
1319
1320         struct dirent *ent;
1321         DIR           *proc;
1322         int            pid;
1323
1324         char cmdline[ARG_MAX];
1325
1326         int        status;
1327         procstat_t ps;
1328         procstat_entry_t pse;
1329         char       state;
1330
1331         unsigned long fork_rate;
1332
1333         procstat_t *ps_ptr;
1334
1335         running = sleeping = zombies = stopped = paging = blocked = 0;
1336         ps_list_reset ();
1337
1338         if ((proc = opendir ("/proc")) == NULL)
1339         {
1340                 char errbuf[1024];
1341                 ERROR ("Cannot open `/proc': %s",
1342                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1343                 return (-1);
1344         }
1345
1346         while ((ent = readdir (proc)) != NULL)
1347         {
1348                 if (!isdigit (ent->d_name[0]))
1349                         continue;
1350
1351                 if ((pid = atoi (ent->d_name)) < 1)
1352                         continue;
1353
1354                 status = ps_read_process (pid, &ps, &state);
1355                 if (status != 0)
1356                 {
1357                         DEBUG ("ps_read_process failed: %i", status);
1358                         continue;
1359                 }
1360
1361                 pse.id       = pid;
1362                 pse.age      = 0;
1363
1364                 pse.num_proc   = ps.num_proc;
1365                 pse.num_lwp    = ps.num_lwp;
1366                 pse.vmem_size  = ps.vmem_size;
1367                 pse.vmem_rss   = ps.vmem_rss;
1368                 pse.stack_size = ps.stack_size;
1369
1370                 pse.vmem_minflt = 0;
1371                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1372                 pse.vmem_majflt = 0;
1373                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1374
1375                 pse.cpu_user = 0;
1376                 pse.cpu_user_counter = ps.cpu_user_counter;
1377                 pse.cpu_system = 0;
1378                 pse.cpu_system_counter = ps.cpu_system_counter;
1379
1380                 pse.io_rchar = ps.io_rchar;
1381                 pse.io_wchar = ps.io_wchar;
1382                 pse.io_syscr = ps.io_syscr;
1383                 pse.io_syscw = ps.io_syscw;
1384
1385                 switch (state)
1386                 {
1387                         case 'R': running++;  break;
1388                         case 'S': sleeping++; break;
1389                         case 'D': blocked++;  break;
1390                         case 'Z': zombies++;  break;
1391                         case 'T': stopped++;  break;
1392                         case 'W': paging++;   break;
1393                 }
1394
1395                 ps_list_add (ps.name,
1396                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1397                                 &pse);
1398         }
1399
1400         closedir (proc);
1401
1402         ps_submit_state ("running",  running);
1403         ps_submit_state ("sleeping", sleeping);
1404         ps_submit_state ("zombies",  zombies);
1405         ps_submit_state ("stopped",  stopped);
1406         ps_submit_state ("paging",   paging);
1407         ps_submit_state ("blocked",  blocked);
1408
1409         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1410                 ps_submit_proc_list (ps_ptr);
1411
1412         fork_rate = read_fork_rate();
1413         if (fork_rate != ULONG_MAX)
1414                 ps_submit_fork_rate(fork_rate);
1415 /* #endif KERNEL_LINUX */
1416
1417 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1418         int running  = 0;
1419         int sleeping = 0;
1420         int zombies  = 0;
1421         int stopped  = 0;
1422         int blocked  = 0;
1423         int idle     = 0;
1424         int wait     = 0;
1425
1426         kvm_t *kd;
1427         char errbuf[1024];
1428         char cmdline[ARG_MAX];
1429         char *cmdline_ptr;
1430         struct kinfo_proc *procs;          /* array of processes */
1431         char **argv;
1432         int count;                         /* returns number of processes */
1433         int i;
1434
1435         procstat_t *ps_ptr;
1436         procstat_entry_t pse;
1437
1438         ps_list_reset ();
1439
1440         /* Open the kvm interface, get a descriptor */
1441         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
1442         if (kd == NULL)
1443         {
1444                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1445                                 errbuf);
1446                 return (0);
1447         }
1448
1449         /* Get the list of processes. */
1450         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1451         if (procs == NULL)
1452         {
1453                 kvm_close (kd);
1454                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1455                                 kvm_geterr(kd));
1456                 return (0);
1457         }
1458
1459         /* Iterate through the processes in kinfo_proc */
1460         for (i = 0; i < count; i++)
1461         {
1462                 /* retrieve the arguments */
1463                 cmdline[0] = 0;
1464                 cmdline_ptr = NULL;
1465
1466                 argv = kvm_getargv (kd, (const struct kinfo_proc *) &(procs[i]), 0);
1467                 if (argv != NULL)
1468                 {
1469                         int status;
1470                         int argc;
1471
1472                         argc = 0;
1473                         while (argv[argc] != NULL)
1474                                 argc++;
1475
1476                         status = strjoin (cmdline, sizeof (cmdline),
1477                                         argv, argc, " ");
1478
1479                         if (status < 0)
1480                         {
1481                                 WARNING ("processes plugin: Command line did "
1482                                                 "not fit into buffer.");
1483                         }
1484                         else
1485                         {
1486                                 cmdline_ptr = &cmdline[0];
1487                         }
1488                 }
1489
1490                 pse.id       = procs[i].ki_pid;
1491                 pse.age      = 0;
1492
1493                 pse.num_proc = 1;
1494                 pse.num_lwp  = procs[i].ki_numthreads;
1495
1496                 pse.vmem_size = procs[i].ki_size;
1497                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1498                 pse.stack_size = procs[i].ki_ssize * getpagesize();
1499                 pse.vmem_minflt = 0;
1500                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1501                 pse.vmem_majflt = 0;
1502                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1503
1504                 pse.cpu_user = 0;
1505                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec
1506                         * 1000
1507                         + procs[i].ki_rusage.ru_utime.tv_usec;
1508                 pse.cpu_system = 0;
1509                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec
1510                         * 1000
1511                         + procs[i].ki_rusage.ru_stime.tv_usec;
1512
1513                 switch (procs[i].ki_stat)
1514                 {
1515                         case SSTOP:     stopped++;      break;
1516                         case SSLEEP:    sleeping++;     break;
1517                         case SRUN:      running++;      break;
1518                         case SIDL:      idle++;         break;
1519                         case SWAIT:     wait++;         break;
1520                         case SLOCK:     blocked++;      break;
1521                         case SZOMB:     zombies++;      break;
1522                 }
1523
1524                 ps_list_add (procs[i].ki_comm, cmdline_ptr, &pse);
1525         }
1526
1527         kvm_close(kd);
1528
1529         ps_submit_state ("running",  running);
1530         ps_submit_state ("sleeping", sleeping);
1531         ps_submit_state ("zombies",  zombies);
1532         ps_submit_state ("stopped",  stopped);
1533         ps_submit_state ("blocked",  blocked);
1534         ps_submit_state ("idle",     idle);
1535         ps_submit_state ("wait",     wait);
1536
1537         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1538                 ps_submit_proc_list (ps_ptr);
1539 #endif /* HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
1540
1541         return (0);
1542 } /* int ps_read */
1543
1544 void module_register (void)
1545 {
1546         plugin_register_config ("processes", ps_config,
1547                         config_keys, config_keys_num);
1548         plugin_register_init ("processes", ps_init);
1549         plugin_register_read ("processes", ps_read);
1550 } /* void module_register */