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  * Copyright (C) 2009       Andrés J. Díaz
   8  * Copyright (C) 2009       Manuel Sanmartin
   9  * Copyright (C) 2010       Clément Stenac
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2 of the License, or (at your
  14  * option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  24  *
  25  * Authors:
  26  *   Lyonel Vincent <lyonel at ezix.org>
  27  *   Florian octo Forster <octo at verplant.org>
  28  *   Oleg King <king2 at kaluga.ru>
  29  *   Sebastian Harl <sh at tokkee.org>
  30  *   Andrés J. Díaz <ajdiaz at connectical.com>
  31  *   Manuel Sanmartin
  32  *   Clément Stenac <clement.stenac at diwi.org>
  33  **/
  34
  35 #include "collectd.h"
  36 #include "common.h"
  37 #include "plugin.h"
  38 #include "configfile.h"
  39
  40 /* Include header files for the mach system, if they exist.. */
  41 #if HAVE_THREAD_INFO
  42 #  if HAVE_MACH_MACH_INIT_H
  43 #    include <mach/mach_init.h>
  44 #  endif
  45 #  if HAVE_MACH_HOST_PRIV_H
  46 #    include <mach/host_priv.h>
  47 #  endif
  48 #  if HAVE_MACH_MACH_ERROR_H
  49 #    include <mach/mach_error.h>
  50 #  endif
  51 #  if HAVE_MACH_MACH_HOST_H
  52 #    include <mach/mach_host.h>
  53 #  endif
  54 #  if HAVE_MACH_MACH_PORT_H
  55 #    include <mach/mach_port.h>
  56 #  endif
  57 #  if HAVE_MACH_MACH_TYPES_H
  58 #    include <mach/mach_types.h>
  59 #  endif
  60 #  if HAVE_MACH_MESSAGE_H
  61 #    include <mach/message.h>
  62 #  endif
  63 #  if HAVE_MACH_PROCESSOR_SET_H
  64 #    include <mach/processor_set.h>
  65 #  endif
  66 #  if HAVE_MACH_TASK_H
  67 #    include <mach/task.h>
  68 #  endif
  69 #  if HAVE_MACH_THREAD_ACT_H
  70 #    include <mach/thread_act.h>
  71 #  endif
  72 #  if HAVE_MACH_VM_REGION_H
  73 #    include <mach/vm_region.h>
  74 #  endif
  75 #  if HAVE_MACH_VM_MAP_H
  76 #    include <mach/vm_map.h>
  77 #  endif
  78 #  if HAVE_MACH_VM_PROT_H
  79 #    include <mach/vm_prot.h>
  80 #  endif
  81 #  if HAVE_SYS_SYSCTL_H
  82 #    include <sys/sysctl.h>
  83 #  endif
  84 /* #endif HAVE_THREAD_INFO */
  85
  86 #elif KERNEL_LINUX
  87 #  if HAVE_LINUX_CONFIG_H
  88 #    include <linux/config.h>
  89 #  endif
  90 #  ifndef CONFIG_HZ
  91 #    define CONFIG_HZ 100
  92 #  endif
  93 /* #endif KERNEL_LINUX */
  94
  95 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
  96 #  include <kvm.h>
  97 #  include <sys/param.h>
  98 #  include <sys/sysctl.h>
  99 #  include <sys/user.h>
 100 #  include <sys/proc.h>
 101 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 102
 103 #elif HAVE_PROCINFO_H
 104 #  include <procinfo.h>
 105 #  include <sys/types.h>
 106
 107 #define MAXPROCENTRY 32
 108 #define MAXTHRDENTRY 16
 109 #define MAXARGLN 1024
 110 /* #endif HAVE_PROCINFO_H */
 111
 112 #else
 113 # error "No applicable input method."
 114 #endif
 115
 116 #if HAVE_REGEX_H
 117 # include <regex.h>
 118 #endif
 119
 120 #ifndef ARG_MAX
 121 #  define ARG_MAX 4096
 122 #endif
 123
 124 static const char *config_keys[] =
 125 {
 126         "Process",
 127         "ProcessMatch"
 128 };
 129 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 130
 131 typedef struct procstat_entry_s
 132 {
 133         unsigned long id;
 134         unsigned long age;
 135
 136         unsigned long num_proc;
 137         unsigned long num_lwp;
 138         unsigned long vmem_size;
 139         unsigned long vmem_rss;
 140         unsigned long vmem_data;
 141         unsigned long vmem_code;
 142         unsigned long stack_size;
 143
 144         unsigned long vmem_minflt;
 145         unsigned long vmem_majflt;
 146         unsigned long vmem_minflt_counter;
 147         unsigned long vmem_majflt_counter;
 148
 149         unsigned long cpu_user;
 150         unsigned long cpu_system;
 151         unsigned long cpu_user_counter;
 152         unsigned long cpu_system_counter;
 153
 154         /* io data */
 155         derive_t io_rchar;
 156         derive_t io_wchar;
 157         derive_t io_syscr;
 158         derive_t io_syscw;
 159
 160         struct procstat_entry_s *next;
 161 } procstat_entry_t;
 162
 163 #define PROCSTAT_NAME_LEN 256
 164 typedef struct procstat
 165 {
 166         char          name[PROCSTAT_NAME_LEN];
 167 #if HAVE_REGEX_H
 168         regex_t *re;
 169 #endif
 170
 171         unsigned long num_proc;
 172         unsigned long num_lwp;
 173         unsigned long vmem_size;
 174         unsigned long vmem_rss;
 175         unsigned long vmem_data;
 176         unsigned long vmem_code;
 177         unsigned long stack_size;
 178
 179         unsigned long vmem_minflt_counter;
 180         unsigned long vmem_majflt_counter;
 181
 182         unsigned long cpu_user_counter;
 183         unsigned long cpu_system_counter;
 184
 185         /* io data */
 186         derive_t io_rchar;
 187         derive_t io_wchar;
 188         derive_t io_syscr;
 189         derive_t io_syscw;
 190
 191         struct procstat   *next;
 192         struct procstat_entry_s *instances;
 193 } procstat_t;
 194
 195 static procstat_t *list_head_g = NULL;
 196
 197 #if HAVE_THREAD_INFO
 198 static mach_port_t port_host_self;
 199 static mach_port_t port_task_self;
 200
 201 static processor_set_name_array_t pset_list;
 202 static mach_msg_type_number_t     pset_list_len;
 203 /* #endif HAVE_THREAD_INFO */
 204
 205 #elif KERNEL_LINUX
 206 static long pagesize_g;
 207 /* #endif KERNEL_LINUX */
 208
 209 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 210 /* no global variables */
 211 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 212
 213 #elif HAVE_PROCINFO_H
 214 static  struct procentry64 procentry[MAXPROCENTRY];
 215 static  struct thrdentry64 thrdentry[MAXTHRDENTRY];
 216 static int pagesize;
 217
 218 #ifndef _AIXVERSION_610
 219 int     getprocs64 (void *procsinfo, int sizproc, void *fdsinfo, int sizfd, pid_t *index, int count);
 220 int     getthrds64( pid_t, void *, int, tid64_t *, int );
 221 #endif
 222 int getargs (struct procentry64 *processBuffer, int bufferLen, char *argsBuffer, int argsLen);
 223 #endif /* HAVE_PROCINFO_H */
 224
 225 /* put name of process from config to list_head_g tree
 226    list_head_g is a list of 'procstat_t' structs with
 227    processes names we want to watch */
 228 static void ps_list_register (const char *name, const char *regexp)
 229 {
 230         procstat_t *new;
 231         procstat_t *ptr;
 232         int status;
 233
 234         new = (procstat_t *) malloc (sizeof (procstat_t));
 235         if (new == NULL)
 236         {
 237                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 238                 return;
 239         }
 240         memset (new, 0, sizeof (procstat_t));
 241         sstrncpy (new->name, name, sizeof (new->name));
 242
 243 #if HAVE_REGEX_H
 244         if (regexp != NULL)
 245         {
 246                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 247                 new->re = (regex_t *) malloc (sizeof (regex_t));
 248                 if (new->re == NULL)
 249                 {
 250                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 251                         sfree (new);
 252                         return;
 253                 }
 254
 255                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 256                 if (status != 0)
 257                 {
 258                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 259                         sfree(new->re);
 260                         return;
 261                 }
 262         }
 263 #else
 264         if (regexp != NULL)
 265         {
 266                 ERROR ("processes plugin: ps_list_register: "
 267                                 "Regular expression \"%s\" found in config "
 268                                 "file, but support for regular expressions "
 269                                 "has been disabled at compile time.",
 270                                 regexp);
 271                 sfree (new);
 272                 return;
 273         }
 274 #endif
 275
 276         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 277         {
 278                 if (strcmp (ptr->name, name) == 0)
 279                 {
 280                         WARNING ("processes plugin: You have configured more "
 281                                         "than one `Process' or "
 282                                         "`ProcessMatch' with the same name. "
 283                                         "All but the first setting will be "
 284                                         "ignored.");
 285                         sfree (new->re);
 286                         sfree (new);
 287                         return;
 288                 }
 289
 290                 if (ptr->next == NULL)
 291                         break;
 292         }
 293
 294         if (ptr == NULL)
 295                 list_head_g = new;
 296         else
 297                 ptr->next = new;
 298 } /* void ps_list_register */
 299
 300 /* try to match name against entry, returns 1 if success */
 301 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 302 {
 303 #if HAVE_REGEX_H
 304         if (ps->re != NULL)
 305         {
 306                 int status;
 307                 const char *str;
 308
 309                 str = cmdline;
 310                 if ((str == NULL) || (str[0] == 0))
 311                         str = name;
 312
 313                 assert (str != NULL);
 314
 315                 status = regexec (ps->re, str,
 316                                 /* nmatch = */ 0,
 317                                 /* pmatch = */ NULL,
 318                                 /* eflags = */ 0);
 319                 if (status == 0)
 320                         return (1);
 321         }
 322         else
 323 #endif
 324         if (strcmp (ps->name, name) == 0)
 325                 return (1);
 326
 327         return (0);
 328 } /* int ps_list_match */
 329
 330 /* add process entry to 'instances' of process 'name' (or refresh it) */
 331 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 332 {
 333         procstat_t *ps;
 334         procstat_entry_t *pse;
 335
 336         if (entry->id == 0)
 337                 return;
 338
 339         for (ps = list_head_g; ps != NULL; ps = ps->next)
 340         {
 341                 if ((ps_list_match (name, cmdline, ps)) == 0)
 342                         continue;
 343
 344                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 345                         if ((pse->id == entry->id) || (pse->next == NULL))
 346                                 break;
 347
 348                 if ((pse == NULL) || (pse->id != entry->id))
 349                 {
 350                         procstat_entry_t *new;
 351
 352                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 353                         if (new == NULL)
 354                                 return;
 355                         memset (new, 0, sizeof (procstat_entry_t));
 356                         new->id = entry->id;
 357
 358                         if (pse == NULL)
 359                                 ps->instances = new;
 360                         else
 361                                 pse->next = new;
 362
 363                         pse = new;
 364                 }
 365
 366                 pse->age = 0;
 367                 pse->num_proc   = entry->num_proc;
 368                 pse->num_lwp    = entry->num_lwp;
 369                 pse->vmem_size  = entry->vmem_size;
 370                 pse->vmem_rss   = entry->vmem_rss;
 371                 pse->vmem_data  = entry->vmem_data;
 372                 pse->vmem_code  = entry->vmem_code;
 373                 pse->stack_size = entry->stack_size;
 374                 pse->io_rchar   = entry->io_rchar;
 375                 pse->io_wchar   = entry->io_wchar;
 376                 pse->io_syscr   = entry->io_syscr;
 377                 pse->io_syscw   = entry->io_syscw;
 378
 379                 ps->num_proc   += pse->num_proc;
 380                 ps->num_lwp    += pse->num_lwp;
 381                 ps->vmem_size  += pse->vmem_size;
 382                 ps->vmem_rss   += pse->vmem_rss;
 383                 ps->vmem_data  += pse->vmem_data;
 384                 ps->vmem_code  += pse->vmem_code;
 385                 ps->stack_size += pse->stack_size;
 386
 387                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 388                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 389                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 390                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 391
 392                 if ((entry->vmem_minflt_counter == 0)
 393                                 && (entry->vmem_majflt_counter == 0))
 394                 {
 395                         pse->vmem_minflt_counter += entry->vmem_minflt;
 396                         pse->vmem_minflt = entry->vmem_minflt;
 397
 398                         pse->vmem_majflt_counter += entry->vmem_majflt;
 399                         pse->vmem_majflt = entry->vmem_majflt;
 400                 }
 401                 else
 402                 {
 403                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 404                         {
 405                                 pse->vmem_minflt = entry->vmem_minflt_counter
 406                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 407                         }
 408                         else
 409                         {
 410                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 411                         }
 412                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 413
 414                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 415                         {
 416                                 pse->vmem_majflt = entry->vmem_majflt_counter
 417                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 418                         }
 419                         else
 420                         {
 421                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 422                         }
 423                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 424                 }
 425
 426                 ps->vmem_minflt_counter += pse->vmem_minflt;
 427                 ps->vmem_majflt_counter += pse->vmem_majflt;
 428
 429                 if ((entry->cpu_user_counter == 0)
 430                                 && (entry->cpu_system_counter == 0))
 431                 {
 432                         pse->cpu_user_counter += entry->cpu_user;
 433                         pse->cpu_user = entry->cpu_user;
 434
 435                         pse->cpu_system_counter += entry->cpu_system;
 436                         pse->cpu_system = entry->cpu_system;
 437                 }
 438                 else
 439                 {
 440                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 441                         {
 442                                 pse->cpu_user = entry->cpu_user_counter
 443                                         + (ULONG_MAX - pse->cpu_user_counter);
 444                         }
 445                         else
 446                         {
 447                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 448                         }
 449                         pse->cpu_user_counter = entry->cpu_user_counter;
 450
 451                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 452                         {
 453                                 pse->cpu_system = entry->cpu_system_counter
 454                                         + (ULONG_MAX - pse->cpu_system_counter);
 455                         }
 456                         else
 457                         {
 458                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 459                         }
 460                         pse->cpu_system_counter = entry->cpu_system_counter;
 461                 }
 462
 463                 ps->cpu_user_counter   += pse->cpu_user;
 464                 ps->cpu_system_counter += pse->cpu_system;
 465         }
 466 }
 467
 468 /* remove old entries from instances of processes in list_head_g */
 469 static void ps_list_reset (void)
 470 {
 471         procstat_t *ps;
 472         procstat_entry_t *pse;
 473         procstat_entry_t *pse_prev;
 474
 475         for (ps = list_head_g; ps != NULL; ps = ps->next)
 476         {
 477                 ps->num_proc    = 0;
 478                 ps->num_lwp     = 0;
 479                 ps->vmem_size   = 0;
 480                 ps->vmem_rss    = 0;
 481                 ps->vmem_data   = 0;
 482                 ps->vmem_code   = 0;
 483                 ps->stack_size  = 0;
 484                 ps->io_rchar = -1;
 485                 ps->io_wchar = -1;
 486                 ps->io_syscr = -1;
 487                 ps->io_syscw = -1;
 488
 489                 pse_prev = NULL;
 490                 pse = ps->instances;
 491                 while (pse != NULL)
 492                 {
 493                         if (pse->age > 10)
 494                         {
 495                                 DEBUG ("Removing this procstat entry cause it's too old: "
 496                                                 "id = %lu; name = %s;",
 497                                                 pse->id, ps->name);
 498
 499                                 if (pse_prev == NULL)
 500                                 {
 501                                         ps->instances = pse->next;
 502                                         free (pse);
 503                                         pse = ps->instances;
 504                                 }
 505                                 else
 506                                 {
 507                                         pse_prev->next = pse->next;
 508                                         free (pse);
 509                                         pse = pse_prev->next;
 510                                 }
 511                         }
 512                         else
 513                         {
 514                                 pse->age++;
 515                                 pse_prev = pse;
 516                                 pse = pse->next;
 517                         }
 518                 } /* while (pse != NULL) */
 519         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 520 }
 521
 522 /* put all pre-defined 'Process' names from config to list_head_g tree */
 523 static int ps_config (const char *key, const char *value)
 524 {
 525         if (strcasecmp (key, "Process") == 0)
 526         {
 527                 ps_list_register (value, NULL);
 528         }
 529         else if (strcasecmp (key, "ProcessMatch") == 0)
 530         {
 531                 char *new_val;
 532                 char *fields[3];
 533                 int fields_num;
 534
 535                 new_val = strdup (value);
 536                 if (new_val == NULL) {
 537                         ERROR ("processes plugin: strdup failed when processing "
 538                                         "`ProcessMatch %s'.", value);
 539                         return (1);
 540                 }
 541
 542                 fields_num = strsplit (new_val, fields,
 543                                 STATIC_ARRAY_SIZE (fields));
 544                 if (fields_num != 2)
 545                 {
 546                         ERROR ("processes plugin: `ProcessMatch' needs exactly "
 547                                         "two string arguments.");
 548                         sfree (new_val);
 549                         return (1);
 550                 }
 551                 ps_list_register (fields[0], fields[1]);
 552                 sfree (new_val);
 553         }
 554         else
 555         {
 556                 ERROR ("processes plugin: The `%s' configuration option is not "
 557                                 "understood and will be ignored.", key);
 558                 return (-1);
 559         }
 560
 561         return (0);
 562 }
 563
 564 static int ps_init (void)
 565 {
 566 #if HAVE_THREAD_INFO
 567         kern_return_t status;
 568
 569         port_host_self = mach_host_self ();
 570         port_task_self = mach_task_self ();
 571
 572         if (pset_list != NULL)
 573         {
 574                 vm_deallocate (port_task_self,
 575                                 (vm_address_t) pset_list,
 576                                 pset_list_len * sizeof (processor_set_t));
 577                 pset_list = NULL;
 578                 pset_list_len = 0;
 579         }
 580
 581         if ((status = host_processor_sets (port_host_self,
 582                                         &pset_list,
 583                                         &pset_list_len)) != KERN_SUCCESS)
 584         {
 585                 ERROR ("host_processor_sets failed: %s\n",
 586                                 mach_error_string (status));
 587                 pset_list = NULL;
 588                 pset_list_len = 0;
 589                 return (-1);
 590         }
 591 /* #endif HAVE_THREAD_INFO */
 592
 593 #elif KERNEL_LINUX
 594         pagesize_g = sysconf(_SC_PAGESIZE);
 595         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 596                         pagesize_g, CONFIG_HZ);
 597 /* #endif KERNEL_LINUX */
 598
 599 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 600 /* no initialization */
 601 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 602
 603 #elif HAVE_PROCINFO_H
 604         pagesize = getpagesize();
 605 #endif /* HAVE_PROCINFO_H */
 606
 607         return (0);
 608 } /* int ps_init */
 609
 610 /* submit global state (e.g.: qty of zombies, running, etc..) */
 611 static void ps_submit_state (const char *state, double value)
 612 {
 613         value_t values[1];
 614         value_list_t vl = VALUE_LIST_INIT;
 615
 616         values[0].gauge = value;
 617
 618         vl.values = values;
 619         vl.values_len = 1;
 620         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 621         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 622         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 623         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 624         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 625
 626         plugin_dispatch_values (&vl);
 627 }
 628
 629 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 630 static void ps_submit_proc_list (procstat_t *ps)
 631 {
 632         value_t values[2];
 633         value_list_t vl = VALUE_LIST_INIT;
 634
 635         vl.values = values;
 636         vl.values_len = 2;
 637         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 638         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 639         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 640
 641         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 642         vl.values[0].gauge = ps->vmem_size;
 643         vl.values_len = 1;
 644         plugin_dispatch_values (&vl);
 645
 646         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 647         vl.values[0].gauge = ps->vmem_rss;
 648         vl.values_len = 1;
 649         plugin_dispatch_values (&vl);
 650
 651         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 652         vl.values[0].gauge = ps->vmem_data;
 653         vl.values_len = 1;
 654         plugin_dispatch_values (&vl);
 655
 656         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 657         vl.values[0].gauge = ps->vmem_code;
 658         vl.values_len = 1;
 659         plugin_dispatch_values (&vl);
 660
 661         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 662         vl.values[0].gauge = ps->stack_size;
 663         vl.values_len = 1;
 664         plugin_dispatch_values (&vl);
 665
 666         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 667         vl.values[0].counter = ps->cpu_user_counter;
 668         vl.values[1].counter = ps->cpu_system_counter;
 669         vl.values_len = 2;
 670         plugin_dispatch_values (&vl);
 671
 672         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 673         vl.values[0].gauge = ps->num_proc;
 674         vl.values[1].gauge = ps->num_lwp;
 675         vl.values_len = 2;
 676         plugin_dispatch_values (&vl);
 677
 678         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 679         vl.values[0].counter = ps->vmem_minflt_counter;
 680         vl.values[1].counter = ps->vmem_majflt_counter;
 681         vl.values_len = 2;
 682         plugin_dispatch_values (&vl);
 683
 684         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 685         {
 686                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 687                 vl.values[0].derive = ps->io_rchar;
 688                 vl.values[1].derive = ps->io_wchar;
 689                 vl.values_len = 2;
 690                 plugin_dispatch_values (&vl);
 691         }
 692
 693         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 694         {
 695                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 696                 vl.values[0].derive = ps->io_syscr;
 697                 vl.values[1].derive = ps->io_syscw;
 698                 vl.values_len = 2;
 699                 plugin_dispatch_values (&vl);
 700         }
 701
 702         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 703                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 704                         "vmem_code = %lu; "
 705                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 706                         "cpu_user_counter = %lu; cpu_system_counter = %lu; "
 707                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 708                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64";",
 709                         ps->name, ps->num_proc, ps->num_lwp,
 710                         ps->vmem_size, ps->vmem_rss,
 711                         ps->vmem_data, ps->vmem_code,
 712                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 713                         ps->cpu_user_counter, ps->cpu_system_counter,
 714                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw);
 715 } /* void ps_submit_proc_list */
 716
 717 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 718 #if KERNEL_LINUX
 719 static int ps_read_tasks (int pid)
 720 {
 721         char           dirname[64];
 722         DIR           *dh;
 723         struct dirent *ent;
 724         int count = 0;
 725
 726         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 727
 728         if ((dh = opendir (dirname)) == NULL)
 729         {
 730                 DEBUG ("Failed to open directory `%s'", dirname);
 731                 return (-1);
 732         }
 733
 734         while ((ent = readdir (dh)) != NULL)
 735         {
 736                 if (!isdigit ((int) ent->d_name[0]))
 737                         continue;
 738                 else
 739                         count++;
 740         }
 741         closedir (dh);
 742
 743         return ((count >= 1) ? count : 1);
 744 } /* int *ps_read_tasks */
 745
 746 /* Read advanced virtual memory data from /proc/pid/status */
 747 static procstat_t *ps_read_vmem (int pid, procstat_t *ps)
 748 {
 749         FILE *fh;
 750         char buffer[1024];
 751         char filename[64];
 752         unsigned long long lib = 0;
 753         unsigned long long exe = 0;
 754         unsigned long long data = 0;
 755         char *fields[8];
 756         int numfields;
 757
 758         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 759         if ((fh = fopen (filename, "r")) == NULL)
 760                 return (NULL);
 761
 762         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 763         {
 764                 long long tmp;
 765                 char *endptr;
 766
 767                 if (strncmp (buffer, "Vm", 2) != 0)
 768                         continue;
 769
 770                 numfields = strsplit (buffer, fields,
 771                                       STATIC_ARRAY_SIZE (fields));
 772
 773                 if (numfields < 2)
 774                         continue;
 775
 776                 errno = 0;
 777                 endptr = NULL;
 778                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 779                 if ((errno == 0) && (endptr != fields[1]))
 780                 {
 781                         if (strncmp (buffer, "VmData", 6) == 0)
 782                         {
 783                                 data = tmp;
 784                         }
 785                         else if (strncmp (buffer, "VmLib", 5) == 0)
 786                         {
 787                                 lib = tmp;
 788                         }
 789                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 790                         {
 791                                 exe = tmp;
 792                         }
 793                 }
 794         } /* while (fgets) */
 795
 796         if (fclose (fh))
 797         {
 798                 char errbuf[1024];
 799                 WARNING ("processes: fclose: %s",
 800                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 801         }
 802
 803         ps->vmem_data = data * 1024;
 804         ps->vmem_code = (exe + lib) * 1024;
 805
 806         return (ps);
 807 } /* procstat_t *ps_read_vmem */
 808
 809 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 810 {
 811         FILE *fh;
 812         char buffer[1024];
 813         char filename[64];
 814
 815         char *fields[8];
 816         int numfields;
 817
 818         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 819         if ((fh = fopen (filename, "r")) == NULL)
 820                 return (NULL);
 821
 822         while (fgets (buffer, sizeof (buffer), fh) != NULL)
 823         {
 824                 derive_t *val = NULL;
 825                 long long tmp;
 826                 char *endptr;
 827
 828                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 829                         val = &(ps->io_rchar);
 830                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 831                         val = &(ps->io_wchar);
 832                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 833                         val = &(ps->io_syscr);
 834                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 835                         val = &(ps->io_syscw);
 836                 else
 837                         continue;
 838
 839                 numfields = strsplit (buffer, fields,
 840                                 STATIC_ARRAY_SIZE (fields));
 841
 842                 if (numfields < 2)
 843                         continue;
 844
 845                 errno = 0;
 846                 endptr = NULL;
 847                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 848                 if ((errno != 0) || (endptr == fields[1]))
 849                         *val = -1;
 850                 else
 851                         *val = (derive_t) tmp;
 852         } /* while (fgets) */
 853
 854         if (fclose (fh))
 855         {
 856                 char errbuf[1024];
 857                 WARNING ("processes: fclose: %s",
 858                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 859         }
 860
 861         return (ps);
 862 } /* procstat_t *ps_read_io */
 863
 864 int ps_read_process (int pid, procstat_t *ps, char *state)
 865 {
 866         char  filename[64];
 867         char  buffer[1024];
 868
 869         char *fields[64];
 870         char  fields_len;
 871
 872         int   i;
 873
 874         int   name_len;
 875
 876         long long unsigned cpu_user_counter;
 877         long long unsigned cpu_system_counter;
 878         long long unsigned vmem_size;
 879         long long unsigned vmem_rss;
 880         long long unsigned stack_size;
 881
 882         memset (ps, 0, sizeof (procstat_t));
 883
 884         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 885
 886         i = read_file_contents (filename, buffer, sizeof(buffer) - 1);
 887         if (i <= 0)
 888                 return (-1);
 889         buffer[i] = 0;
 890
 891         fields_len = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
 892         if (fields_len < 24)
 893         {
 894                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 895                                 " `%s' has only %i fields..",
 896                                 (int) pid, filename, fields_len);
 897                 return (-1);
 898         }
 899
 900         /* copy the name, strip brackets in the process */
 901         name_len = strlen (fields[1]) - 2;
 902         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 903         {
 904                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 905                 return (-1);
 906         }
 907         fields[1] = fields[1] + 1;
 908         fields[1][name_len] = '\0';
 909         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 910
 911
 912         *state = fields[2][0];
 913
 914         if (*state == 'Z')
 915         {
 916                 ps->num_lwp  = 0;
 917                 ps->num_proc = 0;
 918         }
 919         else
 920         {
 921                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
 922                 {
 923                         /* returns -1 => kernel 2.4 */
 924                         ps->num_lwp = 1;
 925                 }
 926                 ps->num_proc = 1;
 927         }
 928
 929         /* Leave the rest at zero if this is only a zombi */
 930         if (ps->num_proc == 0)
 931         {
 932                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 933                                 "name = %s;", pid, ps->name);
 934                 return (0);
 935         }
 936
 937         cpu_user_counter   = atoll (fields[13]);
 938         cpu_system_counter = atoll (fields[14]);
 939         vmem_size          = atoll (fields[22]);
 940         vmem_rss           = atoll (fields[23]);
 941         ps->vmem_minflt_counter = atol (fields[9]);
 942         ps->vmem_majflt_counter = atol (fields[11]);
 943
 944         {
 945                 unsigned long long stack_start = atoll (fields[27]);
 946                 unsigned long long stack_ptr   = atoll (fields[28]);
 947
 948                 stack_size = (stack_start > stack_ptr)
 949                         ? stack_start - stack_ptr
 950                         : stack_ptr - stack_start;
 951         }
 952
 953         /* Convert jiffies to useconds */
 954         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 955         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 956         vmem_rss = vmem_rss * pagesize_g;
 957
 958         if ( (ps_read_vmem(pid, ps)) == NULL)
 959         {
 960                 /* No VMem data */
 961                 ps->vmem_data = -1;
 962                 ps->vmem_code = -1;
 963                 DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
 964         }
 965
 966         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 967         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 968         ps->vmem_size = (unsigned long) vmem_size;
 969         ps->vmem_rss = (unsigned long) vmem_rss;
 970         ps->stack_size = (unsigned long) stack_size;
 971
 972         if ( (ps_read_io (pid, ps)) == NULL)
 973         {
 974                 /* no io data */
 975                 ps->io_rchar = -1;
 976                 ps->io_wchar = -1;
 977                 ps->io_syscr = -1;
 978                 ps->io_syscw = -1;
 979
 980                 DEBUG("ps_read_process: not get io data for pid %i",pid);
 981         }
 982
 983         /* success */
 984         return (0);
 985 } /* int ps_read_process (...) */
 986
 987 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
 988 {
 989         char  *buf_ptr;
 990         size_t len;
 991
 992         char file[PATH_MAX];
 993         int  fd;
 994
 995         size_t n;
 996
 997         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
 998                 return NULL;
 999
1000         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1001                         (unsigned int) pid);
1002
1003         errno = 0;
1004         fd = open (file, O_RDONLY);
1005         if (fd < 0) {
1006                 char errbuf[4096];
1007                 /* ENOENT means the process exited while we were handling it.
1008                  * Don't complain about this, it only fills the logs. */
1009                 if (errno != ENOENT)
1010                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1011                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1012                 return NULL;
1013         }
1014
1015         buf_ptr = buf;
1016         len     = buf_len;
1017
1018         n = 0;
1019
1020         while (42) {
1021                 ssize_t status;
1022
1023                 status = read (fd, (void *)buf_ptr, len);
1024
1025                 if (status < 0) {
1026                         char errbuf[1024];
1027
1028                         if ((EAGAIN == errno) || (EINTR == errno))
1029                                 continue;
1030
1031                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1032                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1033                         close (fd);
1034                         return NULL;
1035                 }
1036
1037                 n += status;
1038
1039                 if (status == 0)
1040                         break;
1041
1042                 buf_ptr += status;
1043                 len     -= status;
1044
1045                 if (len <= 0)
1046                         break;
1047         }
1048
1049         close (fd);
1050
1051         if (0 == n) {
1052                 /* cmdline not available; e.g. kernel thread, zombie */
1053                 if (NULL == name)
1054                         return NULL;
1055
1056                 ssnprintf (buf, buf_len, "[%s]", name);
1057                 return buf;
1058         }
1059
1060         assert (n <= buf_len);
1061
1062         if (n == buf_len)
1063                 --n;
1064         buf[n] = '\0';
1065
1066         --n;
1067         /* remove trailing whitespace */
1068         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1069                 buf[n] = '\0';
1070                 --n;
1071         }
1072
1073         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1074         while (n > 0) {
1075                 if ('\0' == buf[n])
1076                         buf[n] = ' ';
1077                 --n;
1078         }
1079         return buf;
1080 } /* char *ps_get_cmdline (...) */
1081
1082 static unsigned long read_fork_rate ()
1083 {
1084         FILE *proc_stat;
1085         char buf[1024];
1086         unsigned long result = 0;
1087         int numfields;
1088         char *fields[3];
1089
1090         proc_stat = fopen("/proc/stat", "r");
1091         if (proc_stat == NULL) {
1092                 char errbuf[1024];
1093                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1094                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1095                 return ULONG_MAX;
1096         }
1097
1098         while (fgets (buf, sizeof(buf), proc_stat) != NULL)
1099         {
1100                 char *endptr;
1101
1102                 numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE (fields));
1103                 if (numfields != 2)
1104                         continue;
1105
1106                 if (strcmp ("processes", fields[0]) != 0)
1107                         continue;
1108
1109                 errno = 0;
1110                 endptr = NULL;
1111                 result = strtoul(fields[1], &endptr, /* base = */ 10);
1112                 if ((endptr == fields[1]) || (errno != 0)) {
1113                         ERROR ("processes plugin: Cannot parse fork rate: %s",
1114                                         fields[1]);
1115                         result = ULONG_MAX;
1116                         break;
1117                 }
1118
1119                 break;
1120         }
1121
1122         fclose(proc_stat);
1123
1124         return result;
1125 }
1126
1127 static void ps_submit_fork_rate (unsigned long value)
1128 {
1129         value_t values[1];
1130         value_list_t vl = VALUE_LIST_INIT;
1131
1132         values[0].derive = (derive_t) value;
1133
1134         vl.values = values;
1135         vl.values_len = 1;
1136         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
1137         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
1138         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
1139         sstrncpy (vl.type, "fork_rate", sizeof (vl.type));
1140         sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
1141
1142         plugin_dispatch_values (&vl);
1143 }
1144
1145 #endif /* KERNEL_LINUX */
1146
1147 #if HAVE_THREAD_INFO
1148 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1149 {
1150         int mib[4];
1151
1152         struct kinfo_proc kp;
1153         size_t            kp_size;
1154
1155         mib[0] = CTL_KERN;
1156         mib[1] = KERN_PROC;
1157         mib[2] = KERN_PROC_PID;
1158
1159         if (pid_for_task (t, pid) != KERN_SUCCESS)
1160                 return (-1);
1161         mib[3] = *pid;
1162
1163         kp_size = sizeof (kp);
1164         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1165                 return (-1);
1166
1167         if (name_max_len > (MAXCOMLEN + 1))
1168                 name_max_len = MAXCOMLEN + 1;
1169
1170         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1171         name[name_max_len - 1] = '\0';
1172
1173         DEBUG ("pid = %i; name = %s;", *pid, name);
1174
1175         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1176          * `top' does it, because it is a lot of work and only used when
1177          * debugging. -octo */
1178
1179         return (0);
1180 }
1181 #endif /* HAVE_THREAD_INFO */
1182 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1183
1184 /* do actual readings from kernel */
1185 static int ps_read (void)
1186 {
1187 #if HAVE_THREAD_INFO
1188         kern_return_t            status;
1189
1190         int                      pset;
1191         processor_set_t          port_pset_priv;
1192
1193         int                      task;
1194         task_array_t             task_list;
1195         mach_msg_type_number_t   task_list_len;
1196
1197         int                      task_pid;
1198         char                     task_name[MAXCOMLEN + 1];
1199
1200         int                      thread;
1201         thread_act_array_t       thread_list;
1202         mach_msg_type_number_t   thread_list_len;
1203         thread_basic_info_data_t thread_data;
1204         mach_msg_type_number_t   thread_data_len;
1205
1206         int running  = 0;
1207         int sleeping = 0;
1208         int zombies  = 0;
1209         int stopped  = 0;
1210         int blocked  = 0;
1211
1212         procstat_t *ps;
1213         procstat_entry_t pse;
1214
1215         ps_list_reset ();
1216
1217         /*
1218          * The Mach-concept is a little different from the traditional UNIX
1219          * concept: All the work is done in threads. Threads are contained in
1220          * `tasks'. Therefore, `task status' doesn't make much sense, since
1221          * it's actually a `thread status'.
1222          * Tasks are assigned to sets of processors, so that's where you go to
1223          * get a list.
1224          */
1225         for (pset = 0; pset < pset_list_len; pset++)
1226         {
1227                 if ((status = host_processor_set_priv (port_host_self,
1228                                                 pset_list[pset],
1229                                                 &port_pset_priv)) != KERN_SUCCESS)
1230                 {
1231                         ERROR ("host_processor_set_priv failed: %s\n",
1232                                         mach_error_string (status));
1233                         continue;
1234                 }
1235
1236                 if ((status = processor_set_tasks (port_pset_priv,
1237                                                 &task_list,
1238                                                 &task_list_len)) != KERN_SUCCESS)
1239                 {
1240                         ERROR ("processor_set_tasks failed: %s\n",
1241                                         mach_error_string (status));
1242                         mach_port_deallocate (port_task_self, port_pset_priv);
1243                         continue;
1244                 }
1245
1246                 for (task = 0; task < task_list_len; task++)
1247                 {
1248                         ps = NULL;
1249                         if (mach_get_task_name (task_list[task],
1250                                                 &task_pid,
1251                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1252                         {
1253                                 /* search for at least one match */
1254                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1255                                         /* FIXME: cmdline should be here instead of NULL */
1256                                         if (ps_list_match (task_name, NULL, ps) == 1)
1257                                                 break;
1258                         }
1259
1260                         /* Collect more detailed statistics for this process */
1261                         if (ps != NULL)
1262                         {
1263                                 task_basic_info_data_t        task_basic_info;
1264                                 mach_msg_type_number_t        task_basic_info_len;
1265                                 task_events_info_data_t       task_events_info;
1266                                 mach_msg_type_number_t        task_events_info_len;
1267                                 task_absolutetime_info_data_t task_absolutetime_info;
1268                                 mach_msg_type_number_t        task_absolutetime_info_len;
1269
1270                                 memset (&pse, '\0', sizeof (pse));
1271                                 pse.id = task_pid;
1272
1273                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1274                                 status = task_info (task_list[task],
1275                                                 TASK_BASIC_INFO,
1276                                                 (task_info_t) &task_basic_info,
1277                                                 &task_basic_info_len);
1278                                 if (status != KERN_SUCCESS)
1279                                 {
1280                                         ERROR ("task_info failed: %s",
1281                                                         mach_error_string (status));
1282                                         continue; /* with next thread_list */
1283                                 }
1284
1285                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1286                                 status = task_info (task_list[task],
1287                                                 TASK_EVENTS_INFO,
1288                                                 (task_info_t) &task_events_info,
1289                                                 &task_events_info_len);
1290                                 if (status != KERN_SUCCESS)
1291                                 {
1292                                         ERROR ("task_info failed: %s",
1293                                                         mach_error_string (status));
1294                                         continue; /* with next thread_list */
1295                                 }
1296
1297                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1298                                 status = task_info (task_list[task],
1299                                                 TASK_ABSOLUTETIME_INFO,
1300                                                 (task_info_t) &task_absolutetime_info,
1301                                                 &task_absolutetime_info_len);
1302                                 if (status != KERN_SUCCESS)
1303                                 {
1304                                         ERROR ("task_info failed: %s",
1305                                                         mach_error_string (status));
1306                                         continue; /* with next thread_list */
1307                                 }
1308
1309                                 pse.num_proc++;
1310                                 pse.vmem_size = task_basic_info.virtual_size;
1311                                 pse.vmem_rss = task_basic_info.resident_size;
1312                                 /* Does not seem to be easily exposed */
1313                                 pse.vmem_data = 0;
1314                                 pse.vmem_code = 0;
1315
1316                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1317                                 pse.vmem_majflt_counter = task_events_info.faults;
1318
1319                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1320                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1321                         }
1322
1323                         status = task_threads (task_list[task], &thread_list,
1324                                         &thread_list_len);
1325                         if (status != KERN_SUCCESS)
1326                         {
1327                                 /* Apple's `top' treats this case a zombie. It
1328                                  * makes sense to some extend: A `zombie'
1329                                  * thread is nonsense, since the task/process
1330                                  * is dead. */
1331                                 zombies++;
1332                                 DEBUG ("task_threads failed: %s",
1333                                                 mach_error_string (status));
1334                                 if (task_list[task] != port_task_self)
1335                                         mach_port_deallocate (port_task_self,
1336                                                         task_list[task]);
1337                                 continue; /* with next task_list */
1338                         }
1339
1340                         for (thread = 0; thread < thread_list_len; thread++)
1341                         {
1342                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1343                                 status = thread_info (thread_list[thread],
1344                                                 THREAD_BASIC_INFO,
1345                                                 (thread_info_t) &thread_data,
1346                                                 &thread_data_len);
1347                                 if (status != KERN_SUCCESS)
1348                                 {
1349                                         ERROR ("thread_info failed: %s",
1350                                                         mach_error_string (status));
1351                                         if (task_list[task] != port_task_self)
1352                                                 mach_port_deallocate (port_task_self,
1353                                                                 thread_list[thread]);
1354                                         continue; /* with next thread_list */
1355                                 }
1356
1357                                 if (ps != NULL)
1358                                         pse.num_lwp++;
1359
1360                                 switch (thread_data.run_state)
1361                                 {
1362                                         case TH_STATE_RUNNING:
1363                                                 running++;
1364                                                 break;
1365                                         case TH_STATE_STOPPED:
1366                                         /* What exactly is `halted'? */
1367                                         case TH_STATE_HALTED:
1368                                                 stopped++;
1369                                                 break;
1370                                         case TH_STATE_WAITING:
1371                                                 sleeping++;
1372                                                 break;
1373                                         case TH_STATE_UNINTERRUPTIBLE:
1374                                                 blocked++;
1375                                                 break;
1376                                         /* There is no `zombie' case here,
1377                                          * since there are no zombie-threads.
1378                                          * There's only zombie tasks, which are
1379                                          * handled above. */
1380                                         default:
1381                                                 WARNING ("Unknown thread status: %i",
1382                                                                 thread_data.run_state);
1383                                                 break;
1384                                 } /* switch (thread_data.run_state) */
1385
1386                                 if (task_list[task] != port_task_self)
1387                                 {
1388                                         status = mach_port_deallocate (port_task_self,
1389                                                         thread_list[thread]);
1390                                         if (status != KERN_SUCCESS)
1391                                                 ERROR ("mach_port_deallocate failed: %s",
1392                                                                 mach_error_string (status));
1393                                 }
1394                         } /* for (thread_list) */
1395
1396                         if ((status = vm_deallocate (port_task_self,
1397                                                         (vm_address_t) thread_list,
1398                                                         thread_list_len * sizeof (thread_act_t)))
1399                                         != KERN_SUCCESS)
1400                         {
1401                                 ERROR ("vm_deallocate failed: %s",
1402                                                 mach_error_string (status));
1403                         }
1404                         thread_list = NULL;
1405                         thread_list_len = 0;
1406
1407                         /* Only deallocate the task port, if it isn't our own.
1408                          * Don't know what would happen in that case, but this
1409                          * is what Apple's top does.. ;) */
1410                         if (task_list[task] != port_task_self)
1411                         {
1412                                 status = mach_port_deallocate (port_task_self,
1413                                                 task_list[task]);
1414                                 if (status != KERN_SUCCESS)
1415                                         ERROR ("mach_port_deallocate failed: %s",
1416                                                         mach_error_string (status));
1417                         }
1418
1419                         if (ps != NULL)
1420                                 /* FIXME: cmdline should be here instead of NULL */
1421                                 ps_list_add (task_name, NULL, &pse);
1422                 } /* for (task_list) */
1423
1424                 if ((status = vm_deallocate (port_task_self,
1425                                 (vm_address_t) task_list,
1426                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1427                 {
1428                         ERROR ("vm_deallocate failed: %s",
1429                                         mach_error_string (status));
1430                 }
1431                 task_list = NULL;
1432                 task_list_len = 0;
1433
1434                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1435                                 != KERN_SUCCESS)
1436                 {
1437                         ERROR ("mach_port_deallocate failed: %s",
1438                                         mach_error_string (status));
1439                 }
1440         } /* for (pset_list) */
1441
1442         ps_submit_state ("running", running);
1443         ps_submit_state ("sleeping", sleeping);
1444         ps_submit_state ("zombies", zombies);
1445         ps_submit_state ("stopped", stopped);
1446         ps_submit_state ("blocked", blocked);
1447
1448         for (ps = list_head_g; ps != NULL; ps = ps->next)
1449                 ps_submit_proc_list (ps);
1450 /* #endif HAVE_THREAD_INFO */
1451
1452 #elif KERNEL_LINUX
1453         int running  = 0;
1454         int sleeping = 0;
1455         int zombies  = 0;
1456         int stopped  = 0;
1457         int paging   = 0;
1458         int blocked  = 0;
1459
1460         struct dirent *ent;
1461         DIR           *proc;
1462         int            pid;
1463
1464         char cmdline[ARG_MAX];
1465
1466         int        status;
1467         procstat_t ps;
1468         procstat_entry_t pse;
1469         char       state;
1470
1471         unsigned long fork_rate;
1472
1473         procstat_t *ps_ptr;
1474
1475         running = sleeping = zombies = stopped = paging = blocked = 0;
1476         ps_list_reset ();
1477
1478         if ((proc = opendir ("/proc")) == NULL)
1479         {
1480                 char errbuf[1024];
1481                 ERROR ("Cannot open `/proc': %s",
1482                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1483                 return (-1);
1484         }
1485
1486         while ((ent = readdir (proc)) != NULL)
1487         {
1488                 if (!isdigit (ent->d_name[0]))
1489                         continue;
1490
1491                 if ((pid = atoi (ent->d_name)) < 1)
1492                         continue;
1493
1494                 status = ps_read_process (pid, &ps, &state);
1495                 if (status != 0)
1496                 {
1497                         DEBUG ("ps_read_process failed: %i", status);
1498                         continue;
1499                 }
1500
1501                 pse.id       = pid;
1502                 pse.age      = 0;
1503
1504                 pse.num_proc   = ps.num_proc;
1505                 pse.num_lwp    = ps.num_lwp;
1506                 pse.vmem_size  = ps.vmem_size;
1507                 pse.vmem_rss   = ps.vmem_rss;
1508                 pse.vmem_data  = ps.vmem_data;
1509                 pse.vmem_code  = ps.vmem_code;
1510                 pse.stack_size = ps.stack_size;
1511
1512                 pse.vmem_minflt = 0;
1513                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1514                 pse.vmem_majflt = 0;
1515                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1516
1517                 pse.cpu_user = 0;
1518                 pse.cpu_user_counter = ps.cpu_user_counter;
1519                 pse.cpu_system = 0;
1520                 pse.cpu_system_counter = ps.cpu_system_counter;
1521
1522                 pse.io_rchar = ps.io_rchar;
1523                 pse.io_wchar = ps.io_wchar;
1524                 pse.io_syscr = ps.io_syscr;
1525                 pse.io_syscw = ps.io_syscw;
1526
1527                 switch (state)
1528                 {
1529                         case 'R': running++;  break;
1530                         case 'S': sleeping++; break;
1531                         case 'D': blocked++;  break;
1532                         case 'Z': zombies++;  break;
1533                         case 'T': stopped++;  break;
1534                         case 'W': paging++;   break;
1535                 }
1536
1537                 ps_list_add (ps.name,
1538                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1539                                 &pse);
1540         }
1541
1542         closedir (proc);
1543
1544         ps_submit_state ("running",  running);
1545         ps_submit_state ("sleeping", sleeping);
1546         ps_submit_state ("zombies",  zombies);
1547         ps_submit_state ("stopped",  stopped);
1548         ps_submit_state ("paging",   paging);
1549         ps_submit_state ("blocked",  blocked);
1550
1551         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1552                 ps_submit_proc_list (ps_ptr);
1553
1554         fork_rate = read_fork_rate();
1555         if (fork_rate != ULONG_MAX)
1556                 ps_submit_fork_rate(fork_rate);
1557 /* #endif KERNEL_LINUX */
1558
1559 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1560         int running  = 0;
1561         int sleeping = 0;
1562         int zombies  = 0;
1563         int stopped  = 0;
1564         int blocked  = 0;
1565         int idle     = 0;
1566         int wait     = 0;
1567
1568         kvm_t *kd;
1569         char errbuf[1024];
1570         char cmdline[ARG_MAX];
1571         char *cmdline_ptr;
1572         struct kinfo_proc *procs;          /* array of processes */
1573         char **argv;
1574         int count;                         /* returns number of processes */
1575         int i;
1576
1577         procstat_t *ps_ptr;
1578         procstat_entry_t pse;
1579
1580         ps_list_reset ();
1581
1582         /* Open the kvm interface, get a descriptor */
1583         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
1584         if (kd == NULL)
1585         {
1586                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1587                                 errbuf);
1588                 return (0);
1589         }
1590
1591         /* Get the list of processes. */
1592         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1593         if (procs == NULL)
1594         {
1595                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1596                                 kvm_geterr(kd));
1597                 kvm_close (kd);
1598                 return (0);
1599         }
1600
1601         /* Iterate through the processes in kinfo_proc */
1602         for (i = 0; i < count; i++)
1603         {
1604                 /* retrieve the arguments */
1605                 cmdline[0] = 0;
1606                 cmdline_ptr = NULL;
1607
1608                 argv = kvm_getargv (kd, (const struct kinfo_proc *) &(procs[i]), 0);
1609                 if (argv != NULL)
1610                 {
1611                         int status;
1612                         int argc;
1613
1614                         argc = 0;
1615                         while (argv[argc] != NULL)
1616                                 argc++;
1617
1618                         status = strjoin (cmdline, sizeof (cmdline),
1619                                         argv, argc, " ");
1620
1621                         if (status < 0)
1622                         {
1623                                 WARNING ("processes plugin: Command line did "
1624                                                 "not fit into buffer.");
1625                         }
1626                         else
1627                         {
1628                                 cmdline_ptr = &cmdline[0];
1629                         }
1630                 }
1631
1632                 pse.id       = procs[i].ki_pid;
1633                 pse.age      = 0;
1634
1635                 pse.num_proc = 1;
1636                 pse.num_lwp  = procs[i].ki_numthreads;
1637
1638                 pse.vmem_size = procs[i].ki_size;
1639                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1640                 pse.vmem_data = procs[i].ki_dsize * getpagesize();
1641                 pse.vmem_code = procs[i].ki_tsize * getpagesize();
1642                 pse.stack_size = procs[i].ki_ssize * getpagesize();
1643                 pse.vmem_minflt = 0;
1644                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1645                 pse.vmem_majflt = 0;
1646                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1647
1648                 pse.cpu_user = 0;
1649                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec
1650                         * 1000
1651                         + procs[i].ki_rusage.ru_utime.tv_usec;
1652                 pse.cpu_system = 0;
1653                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec
1654                         * 1000
1655                         + procs[i].ki_rusage.ru_stime.tv_usec;
1656
1657                 /* no io data */
1658                 pse.io_rchar = -1;
1659                 pse.io_wchar = -1;
1660                 pse.io_syscr = -1;
1661                 pse.io_syscw = -1;
1662
1663                 switch (procs[i].ki_stat)
1664                 {
1665                         case SSTOP:     stopped++;      break;
1666                         case SSLEEP:    sleeping++;     break;
1667                         case SRUN:      running++;      break;
1668                         case SIDL:      idle++;         break;
1669                         case SWAIT:     wait++;         break;
1670                         case SLOCK:     blocked++;      break;
1671                         case SZOMB:     zombies++;      break;
1672                 }
1673
1674                 ps_list_add (procs[i].ki_comm, cmdline_ptr, &pse);
1675         }
1676
1677         kvm_close(kd);
1678
1679         ps_submit_state ("running",  running);
1680         ps_submit_state ("sleeping", sleeping);
1681         ps_submit_state ("zombies",  zombies);
1682         ps_submit_state ("stopped",  stopped);
1683         ps_submit_state ("blocked",  blocked);
1684         ps_submit_state ("idle",     idle);
1685         ps_submit_state ("wait",     wait);
1686
1687         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1688                 ps_submit_proc_list (ps_ptr);
1689 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
1690
1691 #elif HAVE_PROCINFO_H
1692         /* AIX */
1693         int running  = 0;
1694         int sleeping = 0;
1695         int zombies  = 0;
1696         int stopped  = 0;
1697         int paging   = 0;
1698         int blocked  = 0;
1699
1700         pid_t pindex = 0;
1701         int nprocs;
1702
1703         procstat_t *ps;
1704         procstat_entry_t pse;
1705
1706         ps_list_reset ();
1707         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
1708                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
1709                                         &pindex, MAXPROCENTRY)) > 0)
1710         {
1711                 int i;
1712
1713                 for (i = 0; i < nprocs; i++)
1714                 {
1715                         tid64_t thindex;
1716                         int nthreads;
1717                         char arglist[MAXARGLN+1];
1718                         char *cargs;
1719                         char *cmdline;
1720
1721                         if (procentry[i].pi_state == SNONE) continue;
1722                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
1723
1724                         cmdline = procentry[i].pi_comm;
1725                         cargs = procentry[i].pi_comm;
1726                         if ( procentry[i].pi_flags & SKPROC )
1727                         {
1728                                 if (procentry[i].pi_pid == 0)
1729                                         cmdline = "swapper";
1730                                 cargs = cmdline;
1731                         }
1732                         else
1733                         {
1734                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
1735                                 {
1736                                         int n;
1737
1738                                         n = -1;
1739                                         while (++n < MAXARGLN)
1740                                         {
1741                                                 if (arglist[n] == '\0')
1742                                                 {
1743                                                         if (arglist[n+1] == '\0')
1744                                                                 break;
1745                                                         arglist[n] = ' ';
1746                                                 }
1747                                         }
1748                                         cargs = arglist;
1749                                 }
1750                         }
1751
1752                         pse.id       = procentry[i].pi_pid;
1753                         pse.age      = 0;
1754                         pse.num_lwp  = procentry[i].pi_thcount;
1755                         pse.num_proc = 1;
1756
1757                         thindex=0;
1758                         while ((nthreads = getthrds64(procentry[i].pi_pid,
1759                                                         thrdentry, sizeof(struct thrdentry64),
1760                                                         &thindex, MAXTHRDENTRY)) > 0)
1761                         {
1762                                 int j;
1763
1764                                 for (j=0; j< nthreads; j++)
1765                                 {
1766                                         switch (thrdentry[j].ti_state)
1767                                         {
1768                                                 /* case TSNONE: break; */
1769                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
1770                                                 case TSRUN:     running++;      break;
1771                                                 case TSSLEEP:   sleeping++;     break;
1772                                                 case TSSWAP:    paging++;       break;
1773                                                 case TSSTOP:    stopped++;      break;
1774                                                 case TSZOMB:    zombies++;      break;
1775                                         }
1776                                 }
1777                                 if (nthreads < MAXTHRDENTRY)
1778                                         break;
1779                         }
1780
1781                         pse.cpu_user = 0;
1782                         /* tv_usec is nanosec ??? */
1783                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
1784                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
1785
1786                         pse.cpu_system = 0;
1787                         /* tv_usec is nanosec ??? */
1788                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
1789                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
1790
1791                         pse.vmem_minflt = 0;
1792                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
1793                         pse.vmem_majflt = 0;
1794                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
1795
1796                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
1797                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
1798                         /* Not supported */
1799                         pse.vmem_data = 0;
1800                         pse.vmem_code = 0;
1801                         pse.stack_size =  0;
1802
1803                         pse.io_rchar = -1;
1804                         pse.io_wchar = -1;
1805                         pse.io_syscr = -1;
1806                         pse.io_syscw = -1;
1807
1808                         ps_list_add (cmdline, cargs, &pse);
1809                 } /* for (i = 0 .. nprocs) */
1810
1811                 if (nprocs < MAXPROCENTRY)
1812                         break;
1813         } /* while (getprocs64() > 0) */
1814         ps_submit_state ("running",  running);
1815         ps_submit_state ("sleeping", sleeping);
1816         ps_submit_state ("zombies",  zombies);
1817         ps_submit_state ("stopped",  stopped);
1818         ps_submit_state ("paging",   paging);
1819         ps_submit_state ("blocked",  blocked);
1820
1821         for (ps = list_head_g; ps != NULL; ps = ps->next)
1822                 ps_submit_proc_list (ps);
1823 #endif /* HAVE_PROCINFO_H */
1824
1825         return (0);
1826 } /* int ps_read */
1827
1828 void module_register (void)
1829 {
1830         plugin_register_config ("processes", ps_config,
1831                         config_keys, config_keys_num);
1832         plugin_register_init ("processes", ps_init);
1833         plugin_register_read ("processes", ps_read);
1834 } /* void module_register */