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