src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005       Lyonel Vincent
   4  * Copyright (C) 2006-2010  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  * Copyright (C) 2012       Cosmin Ioiart
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the
  14  * Free Software Foundation; either version 2 of the License, or (at your
  15  * option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with this program; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  25  *
  26  * Authors:
  27  *   Lyonel Vincent <lyonel at ezix.org>
  28  *   Florian octo Forster <octo at collectd.org>
  29  *   Oleg King <king2 at kaluga.ru>
  30  *   Sebastian Harl <sh at tokkee.org>
  31  *   Andrés J. Díaz <ajdiaz at connectical.com>
  32  *   Manuel Sanmartin
  33  *   Clément Stenac <clement.stenac at diwi.org>
  34  *   Cosmin Ioiart <cioiart at gmail.com>
  35  **/
  36
  37 #include "collectd.h"
  38 #include "common.h"
  39 #include "plugin.h"
  40 #include "configfile.h"
  41
  42 /* Include header files for the mach system, if they exist.. */
  43 #if HAVE_THREAD_INFO
  44 #  if HAVE_MACH_MACH_INIT_H
  45 #    include <mach/mach_init.h>
  46 #  endif
  47 #  if HAVE_MACH_HOST_PRIV_H
  48 #    include <mach/host_priv.h>
  49 #  endif
  50 #  if HAVE_MACH_MACH_ERROR_H
  51 #    include <mach/mach_error.h>
  52 #  endif
  53 #  if HAVE_MACH_MACH_HOST_H
  54 #    include <mach/mach_host.h>
  55 #  endif
  56 #  if HAVE_MACH_MACH_PORT_H
  57 #    include <mach/mach_port.h>
  58 #  endif
  59 #  if HAVE_MACH_MACH_TYPES_H
  60 #    include <mach/mach_types.h>
  61 #  endif
  62 #  if HAVE_MACH_MESSAGE_H
  63 #    include <mach/message.h>
  64 #  endif
  65 #  if HAVE_MACH_PROCESSOR_SET_H
  66 #    include <mach/processor_set.h>
  67 #  endif
  68 #  if HAVE_MACH_TASK_H
  69 #    include <mach/task.h>
  70 #  endif
  71 #  if HAVE_MACH_THREAD_ACT_H
  72 #    include <mach/thread_act.h>
  73 #  endif
  74 #  if HAVE_MACH_VM_REGION_H
  75 #    include <mach/vm_region.h>
  76 #  endif
  77 #  if HAVE_MACH_VM_MAP_H
  78 #    include <mach/vm_map.h>
  79 #  endif
  80 #  if HAVE_MACH_VM_PROT_H
  81 #    include <mach/vm_prot.h>
  82 #  endif
  83 #  if HAVE_SYS_SYSCTL_H
  84 #    include <sys/sysctl.h>
  85 #  endif
  86 /* #endif HAVE_THREAD_INFO */
  87
  88 #elif KERNEL_LINUX
  89 #  if HAVE_LINUX_CONFIG_H
  90 #    include <linux/config.h>
  91 #  endif
  92 #  ifndef CONFIG_HZ
  93 #    define CONFIG_HZ 100
  94 #  endif
  95 /* #endif KERNEL_LINUX */
  96
  97 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
  98 #  include <kvm.h>
  99 #  include <sys/param.h>
 100 #  include <sys/sysctl.h>
 101 #  include <sys/user.h>
 102 #  include <sys/proc.h>
 103 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 104
 105 #elif HAVE_PROCINFO_H
 106 #  include <procinfo.h>
 107 #  include <sys/types.h>
 108
 109 #define MAXPROCENTRY 32
 110 #define MAXTHRDENTRY 16
 111 #define MAXARGLN 1024
 112 /* #endif HAVE_PROCINFO_H */
 113
 114 #elif KERNEL_SOLARIS
 115 /* Hack: Avoid #error when building a 32-bit binary with
 116  * _FILE_OFFSET_BITS=64. There is a reason for this #error, as one
 117  * of the structures in <sys/procfs.h> uses an off_t, but that
 118  * isn't relevant to our usage of procfs. */
 119 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
 120 #  define SAVE_FOB_64
 121 #  undef _FILE_OFFSET_BITS
 122 #endif
 123
 124 # include <procfs.h>
 125
 126 #ifdef SAVE_FOB_64
 127 #  define _FILE_OFFSET_BITS 64
 128 #  undef SAVE_FOB_64
 129 #endif
 130
 131 # include <dirent.h>
 132 /* #endif KERNEL_SOLARIS */
 133
 134 #else
 135 # error "No applicable input method."
 136 #endif
 137
 138 #if HAVE_REGEX_H
 139 # include <regex.h>
 140 #endif
 141
 142 #if HAVE_KSTAT_H
 143 # include <kstat.h>
 144 #endif
 145
 146 #ifndef CMDLINE_BUFFER_SIZE
 147 # if defined(ARG_MAX) && (ARG_MAX < 4096)
 148 #  define CMDLINE_BUFFER_SIZE ARG_MAX
 149 # else
 150 #  define CMDLINE_BUFFER_SIZE 4096
 151 # endif
 152 #endif
 153
 154 typedef struct procstat_entry_s
 155 {
 156         unsigned long id;
 157         unsigned long age;
 158
 159         unsigned long num_proc;
 160         unsigned long num_lwp;
 161         unsigned long vmem_size;
 162         unsigned long vmem_rss;
 163         unsigned long vmem_data;
 164         unsigned long vmem_code;
 165         unsigned long stack_size;
 166
 167         unsigned long vmem_minflt;
 168         unsigned long vmem_majflt;
 169         derive_t      vmem_minflt_counter;
 170         derive_t      vmem_majflt_counter;
 171
 172         unsigned long cpu_user;
 173         unsigned long cpu_system;
 174         derive_t      cpu_user_counter;
 175         derive_t      cpu_system_counter;
 176
 177         /* io data */
 178         derive_t io_rchar;
 179         derive_t io_wchar;
 180         derive_t io_syscr;
 181         derive_t io_syscw;
 182
 183         derive_t cswitch_vol;
 184         derive_t cswitch_invol;
 185
 186         struct procstat_entry_s *next;
 187 } procstat_entry_t;
 188
 189 #define PROCSTAT_NAME_LEN 256
 190 typedef struct procstat
 191 {
 192         char          name[PROCSTAT_NAME_LEN];
 193 #if HAVE_REGEX_H
 194         regex_t *re;
 195 #endif
 196
 197         unsigned long num_proc;
 198         unsigned long num_lwp;
 199         unsigned long vmem_size;
 200         unsigned long vmem_rss;
 201         unsigned long vmem_data;
 202         unsigned long vmem_code;
 203         unsigned long stack_size;
 204
 205         derive_t vmem_minflt_counter;
 206         derive_t vmem_majflt_counter;
 207
 208         derive_t cpu_user_counter;
 209         derive_t cpu_system_counter;
 210
 211         /* io data */
 212         derive_t io_rchar;
 213         derive_t io_wchar;
 214         derive_t io_syscr;
 215         derive_t io_syscw;
 216
 217         derive_t cswitch_vol;
 218         derive_t cswitch_invol;
 219
 220         struct procstat   *next;
 221         struct procstat_entry_s *instances;
 222 } procstat_t;
 223
 224 static procstat_t *list_head_g = NULL;
 225
 226 static _Bool report_ctx_switch = 0;
 227
 228 #if HAVE_THREAD_INFO
 229 static mach_port_t port_host_self;
 230 static mach_port_t port_task_self;
 231
 232 static processor_set_name_array_t pset_list;
 233 static mach_msg_type_number_t     pset_list_len;
 234 /* #endif HAVE_THREAD_INFO */
 235
 236 #elif KERNEL_LINUX
 237 static long pagesize_g;
 238 /* #endif KERNEL_LINUX */
 239
 240 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 241 static int pagesize;
 242 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 243
 244 #elif HAVE_PROCINFO_H
 245 static  struct procentry64 procentry[MAXPROCENTRY];
 246 static  struct thrdentry64 thrdentry[MAXTHRDENTRY];
 247 static int pagesize;
 248
 249 #ifndef _AIXVERSION_610
 250 int     getprocs64 (void *procsinfo, int sizproc, void *fdsinfo, int sizfd, pid_t *index, int count);
 251 int     getthrds64( pid_t, void *, int, tid64_t *, int );
 252 #endif
 253 int getargs (void *processBuffer, int bufferLen, char *argsBuffer, int argsLen);
 254 #endif /* HAVE_PROCINFO_H */
 255
 256 /* put name of process from config to list_head_g tree
 257  * list_head_g is a list of 'procstat_t' structs with
 258  * processes names we want to watch */
 259 static void ps_list_register (const char *name, const char *regexp)
 260 {
 261         procstat_t *new;
 262         procstat_t *ptr;
 263         int status;
 264
 265         new = (procstat_t *) malloc (sizeof (procstat_t));
 266         if (new == NULL)
 267         {
 268                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 269                 return;
 270         }
 271         memset (new, 0, sizeof (procstat_t));
 272         sstrncpy (new->name, name, sizeof (new->name));
 273
 274 #if HAVE_REGEX_H
 275         if (regexp != NULL)
 276         {
 277                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 278                 new->re = (regex_t *) malloc (sizeof (regex_t));
 279                 if (new->re == NULL)
 280                 {
 281                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 282                         sfree (new);
 283                         return;
 284                 }
 285
 286                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 287                 if (status != 0)
 288                 {
 289                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 290                         sfree(new->re);
 291                         return;
 292                 }
 293         }
 294 #else
 295         if (regexp != NULL)
 296         {
 297                 ERROR ("processes plugin: ps_list_register: "
 298                                 "Regular expression \"%s\" found in config "
 299                                 "file, but support for regular expressions "
 300                                 "has been disabled at compile time.",
 301                                 regexp);
 302                 sfree (new);
 303                 return;
 304         }
 305 #endif
 306
 307         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 308         {
 309                 if (strcmp (ptr->name, name) == 0)
 310                 {
 311                         WARNING ("processes plugin: You have configured more "
 312                                         "than one `Process' or "
 313                                         "`ProcessMatch' with the same name. "
 314                                         "All but the first setting will be "
 315                                         "ignored.");
 316                         sfree (new->re);
 317                         sfree (new);
 318                         return;
 319                 }
 320
 321                 if (ptr->next == NULL)
 322                         break;
 323         }
 324
 325         if (ptr == NULL)
 326                 list_head_g = new;
 327         else
 328                 ptr->next = new;
 329 } /* void ps_list_register */
 330
 331 /* try to match name against entry, returns 1 if success */
 332 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 333 {
 334 #if HAVE_REGEX_H
 335         if (ps->re != NULL)
 336         {
 337                 int status;
 338                 const char *str;
 339
 340                 str = cmdline;
 341                 if ((str == NULL) || (str[0] == 0))
 342                         str = name;
 343
 344                 assert (str != NULL);
 345
 346                 status = regexec (ps->re, str,
 347                                 /* nmatch = */ 0,
 348                                 /* pmatch = */ NULL,
 349                                 /* eflags = */ 0);
 350                 if (status == 0)
 351                         return (1);
 352         }
 353         else
 354 #endif
 355         if (strcmp (ps->name, name) == 0)
 356                 return (1);
 357
 358         return (0);
 359 } /* int ps_list_match */
 360
 361 /* add process entry to 'instances' of process 'name' (or refresh it) */
 362 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 363 {
 364         procstat_t *ps;
 365         procstat_entry_t *pse;
 366
 367         if (entry->id == 0)
 368                 return;
 369
 370         for (ps = list_head_g; ps != NULL; ps = ps->next)
 371         {
 372                 if ((ps_list_match (name, cmdline, ps)) == 0)
 373                         continue;
 374
 375                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 376                         if ((pse->id == entry->id) || (pse->next == NULL))
 377                                 break;
 378
 379                 if ((pse == NULL) || (pse->id != entry->id))
 380                 {
 381                         procstat_entry_t *new;
 382
 383                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 384                         if (new == NULL)
 385                                 return;
 386                         memset (new, 0, sizeof (procstat_entry_t));
 387                         new->id = entry->id;
 388
 389                         if (pse == NULL)
 390                                 ps->instances = new;
 391                         else
 392                                 pse->next = new;
 393
 394                         pse = new;
 395                 }
 396
 397                 pse->age = 0;
 398                 pse->num_proc   = entry->num_proc;
 399                 pse->num_lwp    = entry->num_lwp;
 400                 pse->vmem_size  = entry->vmem_size;
 401                 pse->vmem_rss   = entry->vmem_rss;
 402                 pse->vmem_data  = entry->vmem_data;
 403                 pse->vmem_code  = entry->vmem_code;
 404                 pse->stack_size = entry->stack_size;
 405                 pse->io_rchar   = entry->io_rchar;
 406                 pse->io_wchar   = entry->io_wchar;
 407                 pse->io_syscr   = entry->io_syscr;
 408                 pse->io_syscw   = entry->io_syscw;
 409                 pse->cswitch_vol   = entry->cswitch_vol;
 410                 pse->cswitch_invol = entry->cswitch_invol;
 411
 412                 ps->num_proc   += pse->num_proc;
 413                 ps->num_lwp    += pse->num_lwp;
 414                 ps->vmem_size  += pse->vmem_size;
 415                 ps->vmem_rss   += pse->vmem_rss;
 416                 ps->vmem_data  += pse->vmem_data;
 417                 ps->vmem_code  += pse->vmem_code;
 418                 ps->stack_size += pse->stack_size;
 419
 420                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 421                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 422                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 423                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 424
 425                 ps->cswitch_vol   += ((pse->cswitch_vol == -1)?0:pse->cswitch_vol);
 426                 ps->cswitch_invol += ((pse->cswitch_invol == -1)?0:pse->cswitch_invol);
 427
 428                 if ((entry->vmem_minflt_counter == 0)
 429                                 && (entry->vmem_majflt_counter == 0))
 430                 {
 431                         pse->vmem_minflt_counter += entry->vmem_minflt;
 432                         pse->vmem_minflt = entry->vmem_minflt;
 433
 434                         pse->vmem_majflt_counter += entry->vmem_majflt;
 435                         pse->vmem_majflt = entry->vmem_majflt;
 436                 }
 437                 else
 438                 {
 439                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 440                         {
 441                                 pse->vmem_minflt = entry->vmem_minflt_counter
 442                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 443                         }
 444                         else
 445                         {
 446                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 447                         }
 448                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 449
 450                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 451                         {
 452                                 pse->vmem_majflt = entry->vmem_majflt_counter
 453                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 454                         }
 455                         else
 456                         {
 457                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 458                         }
 459                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 460                 }
 461
 462                 ps->vmem_minflt_counter += pse->vmem_minflt;
 463                 ps->vmem_majflt_counter += pse->vmem_majflt;
 464
 465                 if ((entry->cpu_user_counter == 0)
 466                                 && (entry->cpu_system_counter == 0))
 467                 {
 468                         pse->cpu_user_counter += entry->cpu_user;
 469                         pse->cpu_user = entry->cpu_user;
 470
 471                         pse->cpu_system_counter += entry->cpu_system;
 472                         pse->cpu_system = entry->cpu_system;
 473                 }
 474                 else
 475                 {
 476                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 477                         {
 478                                 pse->cpu_user = entry->cpu_user_counter
 479                                         + (ULONG_MAX - pse->cpu_user_counter);
 480                         }
 481                         else
 482                         {
 483                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 484                         }
 485                         pse->cpu_user_counter = entry->cpu_user_counter;
 486
 487                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 488                         {
 489                                 pse->cpu_system = entry->cpu_system_counter
 490                                         + (ULONG_MAX - pse->cpu_system_counter);
 491                         }
 492                         else
 493                         {
 494                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 495                         }
 496                         pse->cpu_system_counter = entry->cpu_system_counter;
 497                 }
 498
 499                 ps->cpu_user_counter   += pse->cpu_user;
 500                 ps->cpu_system_counter += pse->cpu_system;
 501         }
 502 }
 503
 504 /* remove old entries from instances of processes in list_head_g */
 505 static void ps_list_reset (void)
 506 {
 507         procstat_t *ps;
 508         procstat_entry_t *pse;
 509         procstat_entry_t *pse_prev;
 510
 511         for (ps = list_head_g; ps != NULL; ps = ps->next)
 512         {
 513                 ps->num_proc    = 0;
 514                 ps->num_lwp     = 0;
 515                 ps->vmem_size   = 0;
 516                 ps->vmem_rss    = 0;
 517                 ps->vmem_data   = 0;
 518                 ps->vmem_code   = 0;
 519                 ps->stack_size  = 0;
 520                 ps->io_rchar = -1;
 521                 ps->io_wchar = -1;
 522                 ps->io_syscr = -1;
 523                 ps->io_syscw = -1;
 524                 ps->cswitch_vol   = -1;
 525                 ps->cswitch_invol = -1;
 526
 527                 pse_prev = NULL;
 528                 pse = ps->instances;
 529                 while (pse != NULL)
 530                 {
 531                         if (pse->age > 10)
 532                         {
 533                                 DEBUG ("Removing this procstat entry cause it's too old: "
 534                                                 "id = %lu; name = %s;",
 535                                                 pse->id, ps->name);
 536
 537                                 if (pse_prev == NULL)
 538                                 {
 539                                         ps->instances = pse->next;
 540                                         free (pse);
 541                                         pse = ps->instances;
 542                                 }
 543                                 else
 544                                 {
 545                                         pse_prev->next = pse->next;
 546                                         free (pse);
 547                                         pse = pse_prev->next;
 548                                 }
 549                         }
 550                         else
 551                         {
 552                                 pse->age++;
 553                                 pse_prev = pse;
 554                                 pse = pse->next;
 555                         }
 556                 } /* while (pse != NULL) */
 557         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 558 }
 559
 560 /* put all pre-defined 'Process' names from config to list_head_g tree */
 561 static int ps_config (oconfig_item_t *ci)
 562 {
 563         int i;
 564
 565         for (i = 0; i < ci->children_num; ++i) {
 566                 oconfig_item_t *c = ci->children + i;
 567
 568                 if (strcasecmp (c->key, "Process") == 0)
 569                 {
 570                         if ((c->values_num != 1)
 571                                         || (OCONFIG_TYPE_STRING != c->values[0].type)) {
 572                                 ERROR ("processes plugin: `Process' expects exactly "
 573                                                 "one string argument (got %i).",
 574                                                 c->values_num);
 575                                 continue;
 576                         }
 577
 578                         if (c->children_num != 0) {
 579                                 WARNING ("processes plugin: the `Process' config option "
 580                                                 "does not expect any child elements -- ignoring "
 581                                                 "content (%i elements) of the <Process '%s'> block.",
 582                                                 c->children_num, c->values[0].value.string);
 583                         }
 584
 585                         ps_list_register (c->values[0].value.string, NULL);
 586                 }
 587                 else if (strcasecmp (c->key, "ProcessMatch") == 0)
 588                 {
 589                         if ((c->values_num != 2)
 590                                         || (OCONFIG_TYPE_STRING != c->values[0].type)
 591                                         || (OCONFIG_TYPE_STRING != c->values[1].type))
 592                         {
 593                                 ERROR ("processes plugin: `ProcessMatch' needs exactly "
 594                                                 "two string arguments (got %i).",
 595                                                 c->values_num);
 596                                 continue;
 597                         }
 598
 599                         if (c->children_num != 0) {
 600                                 WARNING ("processes plugin: the `ProcessMatch' config option "
 601                                                 "does not expect any child elements -- ignoring "
 602                                                 "content (%i elements) of the <ProcessMatch '%s' '%s'> "
 603                                                 "block.", c->children_num, c->values[0].value.string,
 604                                                 c->values[1].value.string);
 605                         }
 606
 607                         ps_list_register (c->values[0].value.string,
 608                                         c->values[1].value.string);
 609                 }
 610                 else if (strcasecmp (c->key, "CollectContextSwitch") == 0)
 611                 {
 612                         cf_util_get_boolean (c, &report_ctx_switch);
 613                 }
 614                 else
 615                 {
 616                         ERROR ("processes plugin: The `%s' configuration option is not "
 617                                         "understood and will be ignored.", c->key);
 618                         continue;
 619                 }
 620         }
 621
 622         return (0);
 623 }
 624
 625 static int ps_init (void)
 626 {
 627 #if HAVE_THREAD_INFO
 628         kern_return_t status;
 629
 630         port_host_self = mach_host_self ();
 631         port_task_self = mach_task_self ();
 632
 633         if (pset_list != NULL)
 634         {
 635                 vm_deallocate (port_task_self,
 636                                 (vm_address_t) pset_list,
 637                                 pset_list_len * sizeof (processor_set_t));
 638                 pset_list = NULL;
 639                 pset_list_len = 0;
 640         }
 641
 642         if ((status = host_processor_sets (port_host_self,
 643                                         &pset_list,
 644                                         &pset_list_len)) != KERN_SUCCESS)
 645         {
 646                 ERROR ("host_processor_sets failed: %s\n",
 647                                 mach_error_string (status));
 648                 pset_list = NULL;
 649                 pset_list_len = 0;
 650                 return (-1);
 651         }
 652 /* #endif HAVE_THREAD_INFO */
 653
 654 #elif KERNEL_LINUX
 655         pagesize_g = sysconf(_SC_PAGESIZE);
 656         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 657                         pagesize_g, CONFIG_HZ);
 658 /* #endif KERNEL_LINUX */
 659
 660 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 661         pagesize = getpagesize();
 662 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 663
 664 #elif HAVE_PROCINFO_H
 665         pagesize = getpagesize();
 666 #endif /* HAVE_PROCINFO_H */
 667
 668         return (0);
 669 } /* int ps_init */
 670
 671 /* submit global state (e.g.: qty of zombies, running, etc..) */
 672 static void ps_submit_state (const char *state, double value)
 673 {
 674         value_t values[1];
 675         value_list_t vl = VALUE_LIST_INIT;
 676
 677         values[0].gauge = value;
 678
 679         vl.values = values;
 680         vl.values_len = 1;
 681         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 682         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 683         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 684         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 685         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 686
 687         plugin_dispatch_values (&vl);
 688 }
 689
 690 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 691 static void ps_submit_proc_list (procstat_t *ps)
 692 {
 693         value_t values[2];
 694         value_list_t vl = VALUE_LIST_INIT;
 695
 696         vl.values = values;
 697         vl.values_len = 2;
 698         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 699         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 700         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 701
 702         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 703         vl.values[0].gauge = ps->vmem_size;
 704         vl.values_len = 1;
 705         plugin_dispatch_values (&vl);
 706
 707         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 708         vl.values[0].gauge = ps->vmem_rss;
 709         vl.values_len = 1;
 710         plugin_dispatch_values (&vl);
 711
 712         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 713         vl.values[0].gauge = ps->vmem_data;
 714         vl.values_len = 1;
 715         plugin_dispatch_values (&vl);
 716
 717         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 718         vl.values[0].gauge = ps->vmem_code;
 719         vl.values_len = 1;
 720         plugin_dispatch_values (&vl);
 721
 722         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 723         vl.values[0].gauge = ps->stack_size;
 724         vl.values_len = 1;
 725         plugin_dispatch_values (&vl);
 726
 727         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 728         vl.values[0].derive = ps->cpu_user_counter;
 729         vl.values[1].derive = ps->cpu_system_counter;
 730         vl.values_len = 2;
 731         plugin_dispatch_values (&vl);
 732
 733         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 734         vl.values[0].gauge = ps->num_proc;
 735         vl.values[1].gauge = ps->num_lwp;
 736         vl.values_len = 2;
 737         plugin_dispatch_values (&vl);
 738
 739         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 740         vl.values[0].derive = ps->vmem_minflt_counter;
 741         vl.values[1].derive = ps->vmem_majflt_counter;
 742         vl.values_len = 2;
 743         plugin_dispatch_values (&vl);
 744
 745         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 746         {
 747                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 748                 vl.values[0].derive = ps->io_rchar;
 749                 vl.values[1].derive = ps->io_wchar;
 750                 vl.values_len = 2;
 751                 plugin_dispatch_values (&vl);
 752         }
 753
 754         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 755         {
 756                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 757                 vl.values[0].derive = ps->io_syscr;
 758                 vl.values[1].derive = ps->io_syscw;
 759                 vl.values_len = 2;
 760                 plugin_dispatch_values (&vl);
 761         }
 762
 763         if ( report_ctx_switch )
 764         {
 765                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 766                 sstrncpy (vl.type_instance, "voluntary", sizeof (vl.type_instance));
 767                 vl.values[0].derive = ps->cswitch_vol;
 768                 vl.values_len = 1;
 769                 plugin_dispatch_values (&vl);
 770
 771                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 772                 sstrncpy (vl.type_instance, "involuntary", sizeof (vl.type_instance));
 773                 vl.values[0].derive = ps->cswitch_invol;
 774                 vl.values_len = 1;
 775                 plugin_dispatch_values (&vl);
 776         }
 777
 778         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 779                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 780                         "vmem_code = %lu; "
 781                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 782                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 783                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 784                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 785                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 786                         ps->name, ps->num_proc, ps->num_lwp,
 787                         ps->vmem_size, ps->vmem_rss,
 788                         ps->vmem_data, ps->vmem_code,
 789                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 790                         ps->cpu_user_counter, ps->cpu_system_counter,
 791                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 792                         ps->cswitch_vol, ps->cswitch_invol);
 793 } /* void ps_submit_proc_list */
 794
 795 #if KERNEL_LINUX || KERNEL_SOLARIS
 796 static void ps_submit_fork_rate (derive_t value)
 797 {
 798         value_t values[1];
 799         value_list_t vl = VALUE_LIST_INIT;
 800
 801         values[0].derive = value;
 802
 803         vl.values = values;
 804         vl.values_len = 1;
 805         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 806         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 807         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 808         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 809         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 810
 811         plugin_dispatch_values(&vl);
 812 }
 813 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 814
 815 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 816 #if KERNEL_LINUX
 817 static procstat_t *ps_read_tasks_status (int pid, procstat_t *ps)
 818 {
 819         char           dirname[64];
 820         DIR           *dh;
 821         char           filename[64];
 822         FILE          *fh;
 823         struct dirent *ent;
 824         derive_t cswitch_vol = 0;
 825         derive_t cswitch_invol = 0;
 826         char buffer[1024];
 827         char *fields[8];
 828         int numfields;
 829
 830         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 831
 832         if ((dh = opendir (dirname)) == NULL)
 833         {
 834                 DEBUG ("Failed to open directory `%s'", dirname);
 835                 return (NULL);
 836         }
 837
 838         while ((ent = readdir (dh)) != NULL)
 839         {
 840                 char *tpid;
 841
 842                 if (!isdigit ((int) ent->d_name[0]))
 843                         continue;
 844
 845                 tpid = ent->d_name;
 846
 847                 ssnprintf (filename, sizeof (filename), "/proc/%i/task/%s/status", pid, tpid);
 848                 if ((fh = fopen (filename, "r")) == NULL)
 849                 {
 850                         DEBUG ("Failed to open file `%s'", filename);
 851                         continue;
 852                 }
 853
 854                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 855                 {
 856                         derive_t tmp;
 857                         char *endptr;
 858
 859                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 860                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 861                                 continue;
 862
 863                         numfields = strsplit (buffer, fields,
 864                                 STATIC_ARRAY_SIZE (fields));
 865
 866                         if (numfields < 2)
 867                                 continue;
 868
 869                         errno = 0;
 870                         endptr = NULL;
 871                         tmp = (derive_t) strtoll (fields[1], &endptr, /* base = */ 10);
 872                         if ((errno == 0) && (endptr != fields[1]))
 873                         {
 874                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 875                                 {
 876                                         cswitch_vol += tmp;
 877                                 }
 878                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 879                                 {
 880                                         cswitch_invol += tmp;
 881                                 }
 882                         }
 883                 } /* while (fgets) */
 884
 885                 if (fclose (fh))
 886                 {
 887                         char errbuf[1024];
 888                                 WARNING ("processes: fclose: %s",
 889                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 890                 }
 891         }
 892         closedir (dh);
 893
 894         ps->cswitch_vol = cswitch_vol;
 895         ps->cswitch_invol = cswitch_invol;
 896
 897         return (ps);
 898 } /* int *ps_read_tasks_status */
 899
 900 /* Read data from /proc/pid/status */
 901 static procstat_t *ps_read_status (int pid, procstat_t *ps)
 902 {
 903         FILE *fh;
 904         char buffer[1024];
 905         char filename[64];
 906         unsigned long lib = 0;
 907         unsigned long exe = 0;
 908         unsigned long data = 0;
 909         unsigned long threads = 0;
 910         char *fields[8];
 911         int numfields;
 912
 913         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 914         if ((fh = fopen (filename, "r")) == NULL)
 915                 return (NULL);
 916
 917         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 918         {
 919                 unsigned long tmp;
 920                 char *endptr;
 921
 922                 if (strncmp (buffer, "Vm", 2) != 0
 923                                 && strncmp (buffer, "Threads", 7) != 0)
 924                         continue;
 925
 926                 numfields = strsplit (buffer, fields,
 927                                 STATIC_ARRAY_SIZE (fields));
 928
 929                 if (numfields < 2)
 930                         continue;
 931
 932                 errno = 0;
 933                 endptr = NULL;
 934                 tmp = strtoul (fields[1], &endptr, /* base = */ 10);
 935                 if ((errno == 0) && (endptr != fields[1]))
 936                 {
 937                         if (strncmp (buffer, "VmData", 6) == 0)
 938                         {
 939                                 data = tmp;
 940                         }
 941                         else if (strncmp (buffer, "VmLib", 5) == 0)
 942                         {
 943                                 lib = tmp;
 944                         }
 945                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 946                         {
 947                                 exe = tmp;
 948                         }
 949                         else if  (strncmp(buffer, "Threads", 7) == 0)
 950                         {
 951                                 threads = tmp;
 952                         }
 953                 }
 954         } /* while (fgets) */
 955
 956         if (fclose (fh))
 957         {
 958                 char errbuf[1024];
 959                 WARNING ("processes: fclose: %s",
 960                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 961         }
 962
 963         ps->vmem_data = data * 1024;
 964         ps->vmem_code = (exe + lib) * 1024;
 965         if (threads != 0)
 966                 ps->num_lwp = threads;
 967
 968         return (ps);
 969 } /* procstat_t *ps_read_vmem */
 970
 971 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 972 {
 973         FILE *fh;
 974         char buffer[1024];
 975         char filename[64];
 976
 977         char *fields[8];
 978         int numfields;
 979
 980         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 981         if ((fh = fopen (filename, "r")) == NULL)
 982                 return (NULL);
 983
 984         while (fgets (buffer, sizeof (buffer), fh) != NULL)
 985         {
 986                 derive_t *val = NULL;
 987                 long long tmp;
 988                 char *endptr;
 989
 990                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 991                         val = &(ps->io_rchar);
 992                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 993                         val = &(ps->io_wchar);
 994                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 995                         val = &(ps->io_syscr);
 996                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 997                         val = &(ps->io_syscw);
 998                 else
 999                         continue;
1000
1001                 numfields = strsplit (buffer, fields,
1002                                 STATIC_ARRAY_SIZE (fields));
1003
1004                 if (numfields < 2)
1005                         continue;
1006
1007                 errno = 0;
1008                 endptr = NULL;
1009                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
1010                 if ((errno != 0) || (endptr == fields[1]))
1011                         *val = -1;
1012                 else
1013                         *val = (derive_t) tmp;
1014         } /* while (fgets) */
1015
1016         if (fclose (fh))
1017         {
1018                 char errbuf[1024];
1019                 WARNING ("processes: fclose: %s",
1020                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1021         }
1022
1023         return (ps);
1024 } /* procstat_t *ps_read_io */
1025
1026 int ps_read_process (int pid, procstat_t *ps, char *state)
1027 {
1028         char  filename[64];
1029         char  buffer[1024];
1030
1031         char *fields[64];
1032         char  fields_len;
1033
1034         int   buffer_len;
1035
1036         char *buffer_ptr;
1037         size_t name_start_pos;
1038         size_t name_end_pos;
1039         size_t name_len;
1040
1041         derive_t cpu_user_counter;
1042         derive_t cpu_system_counter;
1043         long long unsigned vmem_size;
1044         long long unsigned vmem_rss;
1045         long long unsigned stack_size;
1046
1047         memset (ps, 0, sizeof (procstat_t));
1048
1049         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
1050
1051         buffer_len = read_file_contents (filename,
1052                         buffer, sizeof(buffer) - 1);
1053         if (buffer_len <= 0)
1054                 return (-1);
1055         buffer[buffer_len] = 0;
1056
1057         /* The name of the process is enclosed in parens. Since the name can
1058          * contain parens itself, spaces, numbers and pretty much everything
1059          * else, use these to determine the process name. We don't use
1060          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1061          * otherwise be required to determine name_len. */
1062         name_start_pos = 0;
1063         while ((buffer[name_start_pos] != '(')
1064                         && (name_start_pos < buffer_len))
1065                 name_start_pos++;
1066
1067         name_end_pos = buffer_len;
1068         while ((buffer[name_end_pos] != ')')
1069                         && (name_end_pos > 0))
1070                 name_end_pos--;
1071
1072         /* Either '(' or ')' is not found or they are in the wrong order.
1073          * Anyway, something weird that shouldn't happen ever. */
1074         if (name_start_pos >= name_end_pos)
1075         {
1076                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1077                                 name_start_pos, name_end_pos);
1078                 return (-1);
1079         }
1080
1081         name_len = (name_end_pos - name_start_pos) - 1;
1082         if (name_len >= sizeof (ps->name))
1083                 name_len = sizeof (ps->name) - 1;
1084
1085         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1086
1087         if ((buffer_len - name_end_pos) < 2)
1088                 return (-1);
1089         buffer_ptr = &buffer[name_end_pos + 2];
1090
1091         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1092         if (fields_len < 22)
1093         {
1094                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
1095                                 " `%s' has only %i fields..",
1096                                 (int) pid, filename, fields_len);
1097                 return (-1);
1098         }
1099
1100         *state = fields[0][0];
1101
1102         if (*state == 'Z')
1103         {
1104                 ps->num_lwp  = 0;
1105                 ps->num_proc = 0;
1106         }
1107         else
1108         {
1109                 ps->num_lwp = strtoul (fields[17], /* endptr = */ NULL, /* base = */ 10);
1110                 if ((ps_read_status(pid, ps)) == NULL)
1111                 {
1112                         /* No VMem data */
1113                         ps->vmem_data = -1;
1114                         ps->vmem_code = -1;
1115                         DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
1116                 }
1117                 if (ps->num_lwp <= 0)
1118                         ps->num_lwp = 1;
1119                 ps->num_proc = 1;
1120         }
1121
1122         /* Leave the rest at zero if this is only a zombi */
1123         if (ps->num_proc == 0)
1124         {
1125                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
1126                                 "name = %s;", pid, ps->name);
1127                 return (0);
1128         }
1129
1130         cpu_user_counter   = atoll (fields[11]);
1131         cpu_system_counter = atoll (fields[12]);
1132         vmem_size          = atoll (fields[20]);
1133         vmem_rss           = atoll (fields[21]);
1134         ps->vmem_minflt_counter = atol (fields[7]);
1135         ps->vmem_majflt_counter = atol (fields[9]);
1136
1137         {
1138                 unsigned long long stack_start = atoll (fields[25]);
1139                 unsigned long long stack_ptr   = atoll (fields[26]);
1140
1141                 stack_size = (stack_start > stack_ptr)
1142                         ? stack_start - stack_ptr
1143                         : stack_ptr - stack_start;
1144         }
1145
1146         /* Convert jiffies to useconds */
1147         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1148         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1149         vmem_rss = vmem_rss * pagesize_g;
1150
1151         ps->cpu_user_counter = cpu_user_counter;
1152         ps->cpu_system_counter = cpu_system_counter;
1153         ps->vmem_size = (unsigned long) vmem_size;
1154         ps->vmem_rss = (unsigned long) vmem_rss;
1155         ps->stack_size = (unsigned long) stack_size;
1156
1157         if ( (ps_read_io (pid, ps)) == NULL)
1158         {
1159                 /* no io data */
1160                 ps->io_rchar = -1;
1161                 ps->io_wchar = -1;
1162                 ps->io_syscr = -1;
1163                 ps->io_syscw = -1;
1164
1165                 DEBUG("ps_read_process: not get io data for pid %i",pid);
1166         }
1167
1168         if ( report_ctx_switch )
1169         {
1170                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1171                 {
1172                         ps->cswitch_vol = -1;
1173                         ps->cswitch_invol = -1;
1174
1175                         DEBUG("ps_read_tasks_status: not get context "
1176                                         "switch data for pid %i",pid);
1177                 }
1178         }
1179
1180         /* success */
1181         return (0);
1182 } /* int ps_read_process (...) */
1183
1184 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
1185 {
1186         char  *buf_ptr;
1187         size_t len;
1188
1189         char file[PATH_MAX];
1190         int  fd;
1191
1192         size_t n;
1193
1194         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1195                 return NULL;
1196
1197         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1198                         (unsigned int) pid);
1199
1200         errno = 0;
1201         fd = open (file, O_RDONLY);
1202         if (fd < 0) {
1203                 char errbuf[4096];
1204                 /* ENOENT means the process exited while we were handling it.
1205                  * Don't complain about this, it only fills the logs. */
1206                 if (errno != ENOENT)
1207                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1208                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1209                 return NULL;
1210         }
1211
1212         buf_ptr = buf;
1213         len     = buf_len;
1214
1215         n = 0;
1216
1217         while (42) {
1218                 ssize_t status;
1219
1220                 status = read (fd, (void *)buf_ptr, len);
1221
1222                 if (status < 0) {
1223                         char errbuf[1024];
1224
1225                         if ((EAGAIN == errno) || (EINTR == errno))
1226                                 continue;
1227
1228                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1229                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1230                         close (fd);
1231                         return NULL;
1232                 }
1233
1234                 n += status;
1235
1236                 if (status == 0)
1237                         break;
1238
1239                 buf_ptr += status;
1240                 len     -= status;
1241
1242                 if (len <= 0)
1243                         break;
1244         }
1245
1246         close (fd);
1247
1248         if (0 == n) {
1249                 /* cmdline not available; e.g. kernel thread, zombie */
1250                 if (NULL == name)
1251                         return NULL;
1252
1253                 ssnprintf (buf, buf_len, "[%s]", name);
1254                 return buf;
1255         }
1256
1257         assert (n <= buf_len);
1258
1259         if (n == buf_len)
1260                 --n;
1261         buf[n] = '\0';
1262
1263         --n;
1264         /* remove trailing whitespace */
1265         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1266                 buf[n] = '\0';
1267                 --n;
1268         }
1269
1270         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1271         while (n > 0) {
1272                 if ('\0' == buf[n])
1273                         buf[n] = ' ';
1274                 --n;
1275         }
1276         return buf;
1277 } /* char *ps_get_cmdline (...) */
1278
1279 static int read_fork_rate ()
1280 {
1281         FILE *proc_stat;
1282         char buffer[1024];
1283         value_t value;
1284         _Bool value_valid = 0;
1285
1286         proc_stat = fopen ("/proc/stat", "r");
1287         if (proc_stat == NULL)
1288         {
1289                 char errbuf[1024];
1290                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1291                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1292                 return (-1);
1293         }
1294
1295         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1296         {
1297                 int status;
1298                 char *fields[3];
1299                 int fields_num;
1300
1301                 fields_num = strsplit (buffer, fields,
1302                                 STATIC_ARRAY_SIZE (fields));
1303                 if (fields_num != 2)
1304                         continue;
1305
1306                 if (strcmp ("processes", fields[0]) != 0)
1307                         continue;
1308
1309                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1310                 if (status == 0)
1311                         value_valid = 1;
1312
1313                 break;
1314         }
1315         fclose(proc_stat);
1316
1317         if (!value_valid)
1318                 return (-1);
1319
1320         ps_submit_fork_rate (value.derive);
1321         return (0);
1322 }
1323 #endif /*KERNEL_LINUX */
1324
1325 #if KERNEL_SOLARIS
1326 static const char *ps_get_cmdline (long pid, /* {{{ */
1327                 char *buffer, size_t buffer_size)
1328 {
1329         char path[PATH_MAX];
1330         psinfo_t info;
1331         int status;
1332
1333         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1334
1335         status = read_file_contents (path, (void *) &info, sizeof (info));
1336         if (status != sizeof (info))
1337         {
1338                 ERROR ("processes plugin: Unexpected return value "
1339                                 "while reading \"%s\": "
1340                                 "Returned %i but expected %zu.",
1341                                 path, status, buffer_size);
1342                 return (NULL);
1343         }
1344
1345         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1346         sstrncpy (buffer, info.pr_psargs, buffer_size);
1347
1348         return (buffer);
1349 } /* }}} int ps_get_cmdline */
1350
1351 /*
1352  * Reads process information on the Solaris OS. The information comes mainly from
1353  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1354  * The values for input and ouput chars are calculated "by hand"
1355  * Added a few "solaris" specific process states as well
1356  */
1357 static int ps_read_process(long pid, procstat_t *ps, char *state)
1358 {
1359         char filename[64];
1360         char f_psinfo[64], f_usage[64];
1361         char *buffer;
1362
1363         pstatus_t *myStatus;
1364         psinfo_t *myInfo;
1365         prusage_t *myUsage;
1366
1367         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1368         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1369         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1370
1371
1372         buffer = malloc(sizeof (pstatus_t));
1373         memset(buffer, 0, sizeof (pstatus_t));
1374         read_file_contents(filename, buffer, sizeof (pstatus_t));
1375         myStatus = (pstatus_t *) buffer;
1376
1377         buffer = malloc(sizeof (psinfo_t));
1378         memset(buffer, 0, sizeof(psinfo_t));
1379         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1380         myInfo = (psinfo_t *) buffer;
1381
1382         buffer = malloc(sizeof (prusage_t));
1383         memset(buffer, 0, sizeof(prusage_t));
1384         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1385         myUsage = (prusage_t *) buffer;
1386
1387         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1388         ps->num_lwp = myStatus->pr_nlwp;
1389         if (myInfo->pr_wstat != 0) {
1390                 ps->num_proc = 0;
1391                 ps->num_lwp = 0;
1392                 *state = (char) 'Z';
1393                 return (0);
1394         } else {
1395                 ps->num_proc = 1;
1396                 ps->num_lwp = myInfo->pr_nlwp;
1397         }
1398
1399         /*
1400          * Convert system time and user time from nanoseconds to microseconds
1401          * for compatibility with the linux module
1402          */
1403         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1404         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1405
1406         /*
1407          * Convert rssize from KB to bytes to be consistent w/ the linux module
1408          */
1409         ps->vmem_rss = myInfo->pr_rssize * 1024;
1410         ps->vmem_size = myInfo->pr_size * 1024;
1411         ps->vmem_minflt_counter = myUsage->pr_minf;
1412         ps->vmem_majflt_counter = myUsage->pr_majf;
1413
1414         /*
1415          * TODO: Data and code segment calculations for Solaris
1416          */
1417
1418         ps->vmem_data = -1;
1419         ps->vmem_code = -1;
1420         ps->stack_size = myStatus->pr_stksize;
1421
1422         /*
1423          * Calculating input/ouput chars
1424          * Formula used is total chars / total blocks => chars/block
1425          * then convert input/output blocks to chars
1426          */
1427         ulong_t tot_chars = myUsage->pr_ioch;
1428         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1429         ulong_t chars_per_block = 1;
1430         if (tot_blocks != 0)
1431                 chars_per_block = tot_chars / tot_blocks;
1432         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1433         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1434         ps->io_syscr = myUsage->pr_sysc;
1435         ps->io_syscw = myUsage->pr_sysc;
1436
1437
1438         /*
1439          * TODO: Find way of setting BLOCKED and PAGING status
1440          */
1441
1442         *state = (char) 'R';
1443         if (myStatus->pr_flags & PR_ASLEEP)
1444                 *state = (char) 'S';
1445         else if (myStatus->pr_flags & PR_STOPPED)
1446                 *state = (char) 'T';
1447         else if (myStatus->pr_flags & PR_DETACH)
1448                 *state = (char) 'E';
1449         else if (myStatus->pr_flags & PR_DAEMON)
1450                 *state = (char) 'A';
1451         else if (myStatus->pr_flags & PR_ISSYS)
1452                 *state = (char) 'Y';
1453         else if (myStatus->pr_flags & PR_ORPHAN)
1454                 *state = (char) 'O';
1455
1456         sfree(myStatus);
1457         sfree(myInfo);
1458         sfree(myUsage);
1459
1460         return (0);
1461 }
1462
1463 /*
1464  * Reads the number of threads created since the last reboot. On Solaris these
1465  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1466  * The result is the sum for all the threads created on each cpu
1467  */
1468 static int read_fork_rate()
1469 {
1470         extern kstat_ctl_t *kc;
1471         kstat_t *ksp_chain = NULL;
1472         derive_t result = 0;
1473
1474         if (kc == NULL)
1475                 return (-1);
1476
1477         for (ksp_chain = kc->kc_chain;
1478                         ksp_chain != NULL;
1479                         ksp_chain = ksp_chain->ks_next)
1480         {
1481                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1482                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1483                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1484                 {
1485                         long long tmp;
1486
1487                         kstat_read (kc, ksp_chain, NULL);
1488
1489                         tmp = get_kstat_value(ksp_chain, "nthreads");
1490                         if (tmp != -1LL)
1491                                 result += tmp;
1492                 }
1493         }
1494
1495         ps_submit_fork_rate (result);
1496         return (0);
1497 }
1498 #endif /* KERNEL_SOLARIS */
1499
1500 #if HAVE_THREAD_INFO
1501 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1502 {
1503         int mib[4];
1504
1505         struct kinfo_proc kp;
1506         size_t            kp_size;
1507
1508         mib[0] = CTL_KERN;
1509         mib[1] = KERN_PROC;
1510         mib[2] = KERN_PROC_PID;
1511
1512         if (pid_for_task (t, pid) != KERN_SUCCESS)
1513                 return (-1);
1514         mib[3] = *pid;
1515
1516         kp_size = sizeof (kp);
1517         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1518                 return (-1);
1519
1520         if (name_max_len > (MAXCOMLEN + 1))
1521                 name_max_len = MAXCOMLEN + 1;
1522
1523         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1524         name[name_max_len - 1] = '\0';
1525
1526         DEBUG ("pid = %i; name = %s;", *pid, name);
1527
1528         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1529          * `top' does it, because it is a lot of work and only used when
1530          * debugging. -octo */
1531
1532         return (0);
1533 }
1534 #endif /* HAVE_THREAD_INFO */
1535 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1536
1537 /* do actual readings from kernel */
1538 static int ps_read (void)
1539 {
1540 #if HAVE_THREAD_INFO
1541         kern_return_t            status;
1542
1543         int                      pset;
1544         processor_set_t          port_pset_priv;
1545
1546         int                      task;
1547         task_array_t             task_list;
1548         mach_msg_type_number_t   task_list_len;
1549
1550         int                      task_pid;
1551         char                     task_name[MAXCOMLEN + 1];
1552
1553         int                      thread;
1554         thread_act_array_t       thread_list;
1555         mach_msg_type_number_t   thread_list_len;
1556         thread_basic_info_data_t thread_data;
1557         mach_msg_type_number_t   thread_data_len;
1558
1559         int running  = 0;
1560         int sleeping = 0;
1561         int zombies  = 0;
1562         int stopped  = 0;
1563         int blocked  = 0;
1564
1565         procstat_t *ps;
1566         procstat_entry_t pse;
1567
1568         ps_list_reset ();
1569
1570         /*
1571          * The Mach-concept is a little different from the traditional UNIX
1572          * concept: All the work is done in threads. Threads are contained in
1573          * `tasks'. Therefore, `task status' doesn't make much sense, since
1574          * it's actually a `thread status'.
1575          * Tasks are assigned to sets of processors, so that's where you go to
1576          * get a list.
1577          */
1578         for (pset = 0; pset < pset_list_len; pset++)
1579         {
1580                 if ((status = host_processor_set_priv (port_host_self,
1581                                                 pset_list[pset],
1582                                                 &port_pset_priv)) != KERN_SUCCESS)
1583                 {
1584                         ERROR ("host_processor_set_priv failed: %s\n",
1585                                         mach_error_string (status));
1586                         continue;
1587                 }
1588
1589                 if ((status = processor_set_tasks (port_pset_priv,
1590                                                 &task_list,
1591                                                 &task_list_len)) != KERN_SUCCESS)
1592                 {
1593                         ERROR ("processor_set_tasks failed: %s\n",
1594                                         mach_error_string (status));
1595                         mach_port_deallocate (port_task_self, port_pset_priv);
1596                         continue;
1597                 }
1598
1599                 for (task = 0; task < task_list_len; task++)
1600                 {
1601                         ps = NULL;
1602                         if (mach_get_task_name (task_list[task],
1603                                                 &task_pid,
1604                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1605                         {
1606                                 /* search for at least one match */
1607                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1608                                         /* FIXME: cmdline should be here instead of NULL */
1609                                         if (ps_list_match (task_name, NULL, ps) == 1)
1610                                                 break;
1611                         }
1612
1613                         /* Collect more detailed statistics for this process */
1614                         if (ps != NULL)
1615                         {
1616                                 task_basic_info_data_t        task_basic_info;
1617                                 mach_msg_type_number_t        task_basic_info_len;
1618                                 task_events_info_data_t       task_events_info;
1619                                 mach_msg_type_number_t        task_events_info_len;
1620                                 task_absolutetime_info_data_t task_absolutetime_info;
1621                                 mach_msg_type_number_t        task_absolutetime_info_len;
1622
1623                                 memset (&pse, '\0', sizeof (pse));
1624                                 pse.id = task_pid;
1625
1626                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1627                                 status = task_info (task_list[task],
1628                                                 TASK_BASIC_INFO,
1629                                                 (task_info_t) &task_basic_info,
1630                                                 &task_basic_info_len);
1631                                 if (status != KERN_SUCCESS)
1632                                 {
1633                                         ERROR ("task_info failed: %s",
1634                                                         mach_error_string (status));
1635                                         continue; /* with next thread_list */
1636                                 }
1637
1638                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1639                                 status = task_info (task_list[task],
1640                                                 TASK_EVENTS_INFO,
1641                                                 (task_info_t) &task_events_info,
1642                                                 &task_events_info_len);
1643                                 if (status != KERN_SUCCESS)
1644                                 {
1645                                         ERROR ("task_info failed: %s",
1646                                                         mach_error_string (status));
1647                                         continue; /* with next thread_list */
1648                                 }
1649
1650                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1651                                 status = task_info (task_list[task],
1652                                                 TASK_ABSOLUTETIME_INFO,
1653                                                 (task_info_t) &task_absolutetime_info,
1654                                                 &task_absolutetime_info_len);
1655                                 if (status != KERN_SUCCESS)
1656                                 {
1657                                         ERROR ("task_info failed: %s",
1658                                                         mach_error_string (status));
1659                                         continue; /* with next thread_list */
1660                                 }
1661
1662                                 pse.num_proc++;
1663                                 pse.vmem_size = task_basic_info.virtual_size;
1664                                 pse.vmem_rss = task_basic_info.resident_size;
1665                                 /* Does not seem to be easily exposed */
1666                                 pse.vmem_data = 0;
1667                                 pse.vmem_code = 0;
1668
1669                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1670                                 pse.vmem_majflt_counter = task_events_info.faults;
1671
1672                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1673                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1674                         }
1675
1676                         status = task_threads (task_list[task], &thread_list,
1677                                         &thread_list_len);
1678                         if (status != KERN_SUCCESS)
1679                         {
1680                                 /* Apple's `top' treats this case a zombie. It
1681                                  * makes sense to some extend: A `zombie'
1682                                  * thread is nonsense, since the task/process
1683                                  * is dead. */
1684                                 zombies++;
1685                                 DEBUG ("task_threads failed: %s",
1686                                                 mach_error_string (status));
1687                                 if (task_list[task] != port_task_self)
1688                                         mach_port_deallocate (port_task_self,
1689                                                         task_list[task]);
1690                                 continue; /* with next task_list */
1691                         }
1692
1693                         for (thread = 0; thread < thread_list_len; thread++)
1694                         {
1695                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1696                                 status = thread_info (thread_list[thread],
1697                                                 THREAD_BASIC_INFO,
1698                                                 (thread_info_t) &thread_data,
1699                                                 &thread_data_len);
1700                                 if (status != KERN_SUCCESS)
1701                                 {
1702                                         ERROR ("thread_info failed: %s",
1703                                                         mach_error_string (status));
1704                                         if (task_list[task] != port_task_self)
1705                                                 mach_port_deallocate (port_task_self,
1706                                                                 thread_list[thread]);
1707                                         continue; /* with next thread_list */
1708                                 }
1709
1710                                 if (ps != NULL)
1711                                         pse.num_lwp++;
1712
1713                                 switch (thread_data.run_state)
1714                                 {
1715                                         case TH_STATE_RUNNING:
1716                                                 running++;
1717                                                 break;
1718                                         case TH_STATE_STOPPED:
1719                                         /* What exactly is `halted'? */
1720                                         case TH_STATE_HALTED:
1721                                                 stopped++;
1722                                                 break;
1723                                         case TH_STATE_WAITING:
1724                                                 sleeping++;
1725                                                 break;
1726                                         case TH_STATE_UNINTERRUPTIBLE:
1727                                                 blocked++;
1728                                                 break;
1729                                         /* There is no `zombie' case here,
1730                                          * since there are no zombie-threads.
1731                                          * There's only zombie tasks, which are
1732                                          * handled above. */
1733                                         default:
1734                                                 WARNING ("Unknown thread status: %i",
1735                                                                 thread_data.run_state);
1736                                                 break;
1737                                 } /* switch (thread_data.run_state) */
1738
1739                                 if (task_list[task] != port_task_self)
1740                                 {
1741                                         status = mach_port_deallocate (port_task_self,
1742                                                         thread_list[thread]);
1743                                         if (status != KERN_SUCCESS)
1744                                                 ERROR ("mach_port_deallocate failed: %s",
1745                                                                 mach_error_string (status));
1746                                 }
1747                         } /* for (thread_list) */
1748
1749                         if ((status = vm_deallocate (port_task_self,
1750                                                         (vm_address_t) thread_list,
1751                                                         thread_list_len * sizeof (thread_act_t)))
1752                                         != KERN_SUCCESS)
1753                         {
1754                                 ERROR ("vm_deallocate failed: %s",
1755                                                 mach_error_string (status));
1756                         }
1757                         thread_list = NULL;
1758                         thread_list_len = 0;
1759
1760                         /* Only deallocate the task port, if it isn't our own.
1761                          * Don't know what would happen in that case, but this
1762                          * is what Apple's top does.. ;) */
1763                         if (task_list[task] != port_task_self)
1764                         {
1765                                 status = mach_port_deallocate (port_task_self,
1766                                                 task_list[task]);
1767                                 if (status != KERN_SUCCESS)
1768                                         ERROR ("mach_port_deallocate failed: %s",
1769                                                         mach_error_string (status));
1770                         }
1771
1772                         if (ps != NULL)
1773                                 /* FIXME: cmdline should be here instead of NULL */
1774                                 ps_list_add (task_name, NULL, &pse);
1775                 } /* for (task_list) */
1776
1777                 if ((status = vm_deallocate (port_task_self,
1778                                 (vm_address_t) task_list,
1779                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1780                 {
1781                         ERROR ("vm_deallocate failed: %s",
1782                                         mach_error_string (status));
1783                 }
1784                 task_list = NULL;
1785                 task_list_len = 0;
1786
1787                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1788                                 != KERN_SUCCESS)
1789                 {
1790                         ERROR ("mach_port_deallocate failed: %s",
1791                                         mach_error_string (status));
1792                 }
1793         } /* for (pset_list) */
1794
1795         ps_submit_state ("running", running);
1796         ps_submit_state ("sleeping", sleeping);
1797         ps_submit_state ("zombies", zombies);
1798         ps_submit_state ("stopped", stopped);
1799         ps_submit_state ("blocked", blocked);
1800
1801         for (ps = list_head_g; ps != NULL; ps = ps->next)
1802                 ps_submit_proc_list (ps);
1803 /* #endif HAVE_THREAD_INFO */
1804
1805 #elif KERNEL_LINUX
1806         int running  = 0;
1807         int sleeping = 0;
1808         int zombies  = 0;
1809         int stopped  = 0;
1810         int paging   = 0;
1811         int blocked  = 0;
1812
1813         struct dirent *ent;
1814         DIR           *proc;
1815         int            pid;
1816
1817         char cmdline[CMDLINE_BUFFER_SIZE];
1818
1819         int        status;
1820         procstat_t ps;
1821         procstat_entry_t pse;
1822         char       state;
1823
1824         procstat_t *ps_ptr;
1825
1826         running = sleeping = zombies = stopped = paging = blocked = 0;
1827         ps_list_reset ();
1828
1829         if ((proc = opendir ("/proc")) == NULL)
1830         {
1831                 char errbuf[1024];
1832                 ERROR ("Cannot open `/proc': %s",
1833                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1834                 return (-1);
1835         }
1836
1837         while ((ent = readdir (proc)) != NULL)
1838         {
1839                 if (!isdigit (ent->d_name[0]))
1840                         continue;
1841
1842                 if ((pid = atoi (ent->d_name)) < 1)
1843                         continue;
1844
1845                 status = ps_read_process (pid, &ps, &state);
1846                 if (status != 0)
1847                 {
1848                         DEBUG ("ps_read_process failed: %i", status);
1849                         continue;
1850                 }
1851
1852                 pse.id       = pid;
1853                 pse.age      = 0;
1854
1855                 pse.num_proc   = ps.num_proc;
1856                 pse.num_lwp    = ps.num_lwp;
1857                 pse.vmem_size  = ps.vmem_size;
1858                 pse.vmem_rss   = ps.vmem_rss;
1859                 pse.vmem_data  = ps.vmem_data;
1860                 pse.vmem_code  = ps.vmem_code;
1861                 pse.stack_size = ps.stack_size;
1862
1863                 pse.vmem_minflt = 0;
1864                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1865                 pse.vmem_majflt = 0;
1866                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1867
1868                 pse.cpu_user = 0;
1869                 pse.cpu_user_counter = ps.cpu_user_counter;
1870                 pse.cpu_system = 0;
1871                 pse.cpu_system_counter = ps.cpu_system_counter;
1872
1873                 pse.io_rchar = ps.io_rchar;
1874                 pse.io_wchar = ps.io_wchar;
1875                 pse.io_syscr = ps.io_syscr;
1876                 pse.io_syscw = ps.io_syscw;
1877
1878                 pse.cswitch_vol = ps.cswitch_vol;
1879                 pse.cswitch_invol = ps.cswitch_invol;
1880
1881                 switch (state)
1882                 {
1883                         case 'R': running++;  break;
1884                         case 'S': sleeping++; break;
1885                         case 'D': blocked++;  break;
1886                         case 'Z': zombies++;  break;
1887                         case 'T': stopped++;  break;
1888                         case 'W': paging++;   break;
1889                 }
1890
1891                 ps_list_add (ps.name,
1892                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1893                                 &pse);
1894         }
1895
1896         closedir (proc);
1897
1898         ps_submit_state ("running",  running);
1899         ps_submit_state ("sleeping", sleeping);
1900         ps_submit_state ("zombies",  zombies);
1901         ps_submit_state ("stopped",  stopped);
1902         ps_submit_state ("paging",   paging);
1903         ps_submit_state ("blocked",  blocked);
1904
1905         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1906                 ps_submit_proc_list (ps_ptr);
1907
1908         read_fork_rate();
1909 /* #endif KERNEL_LINUX */
1910
1911 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1912         int running  = 0;
1913         int sleeping = 0;
1914         int zombies  = 0;
1915         int stopped  = 0;
1916         int blocked  = 0;
1917         int idle     = 0;
1918         int wait     = 0;
1919
1920         kvm_t *kd;
1921         char errbuf[_POSIX2_LINE_MAX];
1922         struct kinfo_proc *procs;          /* array of processes */
1923         struct kinfo_proc *proc_ptr = NULL;
1924         int count;                         /* returns number of processes */
1925         int i;
1926
1927         procstat_t *ps_ptr;
1928         procstat_entry_t pse;
1929
1930         ps_list_reset ();
1931
1932         /* Open the kvm interface, get a descriptor */
1933         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1934         if (kd == NULL)
1935         {
1936                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1937                                 errbuf);
1938                 return (0);
1939         }
1940
1941         /* Get the list of processes. */
1942         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1943         if (procs == NULL)
1944         {
1945                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1946                                 kvm_geterr(kd));
1947                 kvm_close (kd);
1948                 return (0);
1949         }
1950
1951         /* Iterate through the processes in kinfo_proc */
1952         for (i = 0; i < count; i++)
1953         {
1954                 /* Create only one process list entry per _process_, i.e.
1955                  * filter out threads (duplicate PID entries). */
1956                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1957                 {
1958                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1959                         _Bool have_cmdline = 0;
1960
1961                         proc_ptr = &(procs[i]);
1962                         /* Don't probe system processes and processes without arguments */
1963                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1964                                         && (procs[i].ki_args != NULL))
1965                         {
1966                                 char **argv;
1967                                 int argc;
1968                                 int status;
1969
1970                                 /* retrieve the arguments */
1971                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1972                                 argc = 0;
1973                                 if ((argv != NULL) && (argv[0] != NULL))
1974                                 {
1975                                         while (argv[argc] != NULL)
1976                                                 argc++;
1977
1978                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
1979                                         if (status < 0)
1980                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
1981                                         else
1982                                                 have_cmdline = 1;
1983                                 }
1984                         } /* if (process has argument list) */
1985
1986                         pse.id       = procs[i].ki_pid;
1987                         pse.age      = 0;
1988
1989                         pse.num_proc = 1;
1990                         pse.num_lwp  = procs[i].ki_numthreads;
1991
1992                         pse.vmem_size = procs[i].ki_size;
1993                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
1994                         pse.vmem_data = procs[i].ki_dsize * pagesize;
1995                         pse.vmem_code = procs[i].ki_tsize * pagesize;
1996                         pse.stack_size = procs[i].ki_ssize * pagesize;
1997                         pse.vmem_minflt = 0;
1998                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1999                         pse.vmem_majflt = 0;
2000                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
2001
2002                         pse.cpu_user = 0;
2003                         pse.cpu_system = 0;
2004                         pse.cpu_user_counter = 0;
2005                         pse.cpu_system_counter = 0;
2006                         /*
2007                          * The u-area might be swapped out, and we can't get
2008                          * at it because we have a crashdump and no swap.
2009                          * If it's here fill in these fields, otherwise, just
2010                          * leave them 0.
2011                          */
2012                         if (procs[i].ki_flag & P_INMEM)
2013                         {
2014                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2015                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2016                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2017                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2018                         }
2019
2020                         /* no I/O data */
2021                         pse.io_rchar = -1;
2022                         pse.io_wchar = -1;
2023                         pse.io_syscr = -1;
2024                         pse.io_syscw = -1;
2025
2026                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2027                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2028
2029                 switch (procs[i].ki_stat)
2030                 {
2031                         case SSTOP:     stopped++;      break;
2032                         case SSLEEP:    sleeping++;     break;
2033                         case SRUN:      running++;      break;
2034                         case SIDL:      idle++;         break;
2035                         case SWAIT:     wait++;         break;
2036                         case SLOCK:     blocked++;      break;
2037                         case SZOMB:     zombies++;      break;
2038                 }
2039         }
2040
2041         kvm_close(kd);
2042
2043         ps_submit_state ("running",  running);
2044         ps_submit_state ("sleeping", sleeping);
2045         ps_submit_state ("zombies",  zombies);
2046         ps_submit_state ("stopped",  stopped);
2047         ps_submit_state ("blocked",  blocked);
2048         ps_submit_state ("idle",     idle);
2049         ps_submit_state ("wait",     wait);
2050
2051         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2052                 ps_submit_proc_list (ps_ptr);
2053 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2054
2055 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2056         int running  = 0;
2057         int sleeping = 0;
2058         int zombies  = 0;
2059         int stopped  = 0;
2060         int onproc   = 0;
2061         int idle     = 0;
2062         int dead     = 0;
2063
2064         kvm_t *kd;
2065         char errbuf[1024];
2066         struct kinfo_proc *procs;          /* array of processes */
2067         struct kinfo_proc *proc_ptr = NULL;
2068         int count;                         /* returns number of processes */
2069         int i;
2070
2071         procstat_t *ps_ptr;
2072         procstat_entry_t pse;
2073
2074         ps_list_reset ();
2075
2076         /* Open the kvm interface, get a descriptor */
2077         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2078         if (kd == NULL)
2079         {
2080                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2081                                 errbuf);
2082                 return (0);
2083         }
2084
2085         /* Get the list of processes. */
2086         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2087         if (procs == NULL)
2088         {
2089                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2090                                 kvm_geterr(kd));
2091                 kvm_close (kd);
2092                 return (0);
2093         }
2094
2095         /* Iterate through the processes in kinfo_proc */
2096         for (i = 0; i < count; i++)
2097         {
2098                 /* Create only one process list entry per _process_, i.e.
2099                  * filter out threads (duplicate PID entries). */
2100                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2101                 {
2102                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2103                         _Bool have_cmdline = 0;
2104
2105                         proc_ptr = &(procs[i]);
2106                         /* Don't probe zombie processes  */
2107                         if (!P_ZOMBIE(proc_ptr))
2108                         {
2109                                 char **argv;
2110                                 int argc;
2111                                 int status;
2112
2113                                 /* retrieve the arguments */
2114                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2115                                 argc = 0;
2116                                 if ((argv != NULL) && (argv[0] != NULL))
2117                                 {
2118                                         while (argv[argc] != NULL)
2119                                                 argc++;
2120
2121                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2122                                         if (status < 0)
2123                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2124                                         else
2125                                                 have_cmdline = 1;
2126                                 }
2127                         } /* if (process has argument list) */
2128
2129                         pse.id       = procs[i].p_pid;
2130                         pse.age      = 0;
2131
2132                         pse.num_proc = 1;
2133                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2134
2135                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2136                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2137                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2138                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2139                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2140                         pse.vmem_minflt = 0;
2141                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2142                         pse.vmem_majflt = 0;
2143                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2144
2145                         pse.cpu_user = 0;
2146                         pse.cpu_system = 0;
2147                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2148                                                 (1000000lu * procs[i].p_uutime_sec);
2149                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2150                                                 (1000000lu * procs[i].p_ustime_sec);
2151
2152                         /* no I/O data */
2153                         pse.io_rchar = -1;
2154                         pse.io_wchar = -1;
2155                         pse.io_syscr = -1;
2156                         pse.io_syscw = -1;
2157
2158                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2159                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2160
2161                 switch (procs[i].p_stat)
2162                 {
2163                         case SSTOP:     stopped++;      break;
2164                         case SSLEEP:    sleeping++;     break;
2165                         case SRUN:      running++;      break;
2166                         case SIDL:      idle++;         break;
2167                         case SONPROC:   onproc++;       break;
2168                         case SDEAD:     dead++;         break;
2169                         case SZOMB:     zombies++;      break;
2170                 }
2171         }
2172
2173         kvm_close(kd);
2174
2175         ps_submit_state ("running",  running);
2176         ps_submit_state ("sleeping", sleeping);
2177         ps_submit_state ("zombies",  zombies);
2178         ps_submit_state ("stopped",  stopped);
2179         ps_submit_state ("onproc",   onproc);
2180         ps_submit_state ("idle",     idle);
2181         ps_submit_state ("dead",     dead);
2182
2183         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2184                 ps_submit_proc_list (ps_ptr);
2185 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2186
2187 #elif HAVE_PROCINFO_H
2188         /* AIX */
2189         int running  = 0;
2190         int sleeping = 0;
2191         int zombies  = 0;
2192         int stopped  = 0;
2193         int paging   = 0;
2194         int blocked  = 0;
2195
2196         pid_t pindex = 0;
2197         int nprocs;
2198
2199         procstat_t *ps;
2200         procstat_entry_t pse;
2201
2202         ps_list_reset ();
2203         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2204                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2205                                         &pindex, MAXPROCENTRY)) > 0)
2206         {
2207                 int i;
2208
2209                 for (i = 0; i < nprocs; i++)
2210                 {
2211                         tid64_t thindex;
2212                         int nthreads;
2213                         char arglist[MAXARGLN+1];
2214                         char *cargs;
2215                         char *cmdline;
2216
2217                         if (procentry[i].pi_state == SNONE) continue;
2218                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2219
2220                         cmdline = procentry[i].pi_comm;
2221                         cargs = procentry[i].pi_comm;
2222                         if ( procentry[i].pi_flags & SKPROC )
2223                         {
2224                                 if (procentry[i].pi_pid == 0)
2225                                         cmdline = "swapper";
2226                                 cargs = cmdline;
2227                         }
2228                         else
2229                         {
2230                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2231                                 {
2232                                         int n;
2233
2234                                         n = -1;
2235                                         while (++n < MAXARGLN)
2236                                         {
2237                                                 if (arglist[n] == '\0')
2238                                                 {
2239                                                         if (arglist[n+1] == '\0')
2240                                                                 break;
2241                                                         arglist[n] = ' ';
2242                                                 }
2243                                         }
2244                                         cargs = arglist;
2245                                 }
2246                         }
2247
2248                         pse.id       = procentry[i].pi_pid;
2249                         pse.age      = 0;
2250                         pse.num_lwp  = procentry[i].pi_thcount;
2251                         pse.num_proc = 1;
2252
2253                         thindex=0;
2254                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2255                                                         thrdentry, sizeof(struct thrdentry64),
2256                                                         &thindex, MAXTHRDENTRY)) > 0)
2257                         {
2258                                 int j;
2259
2260                                 for (j=0; j< nthreads; j++)
2261                                 {
2262                                         switch (thrdentry[j].ti_state)
2263                                         {
2264                                                 /* case TSNONE: break; */
2265                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2266                                                 case TSRUN:     running++;      break;
2267                                                 case TSSLEEP:   sleeping++;     break;
2268                                                 case TSSWAP:    paging++;       break;
2269                                                 case TSSTOP:    stopped++;      break;
2270                                                 case TSZOMB:    zombies++;      break;
2271                                         }
2272                                 }
2273                                 if (nthreads < MAXTHRDENTRY)
2274                                         break;
2275                         }
2276
2277                         pse.cpu_user = 0;
2278                         /* tv_usec is nanosec ??? */
2279                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2280                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2281
2282                         pse.cpu_system = 0;
2283                         /* tv_usec is nanosec ??? */
2284                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2285                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2286
2287                         pse.vmem_minflt = 0;
2288                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2289                         pse.vmem_majflt = 0;
2290                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2291
2292                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2293                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2294                         /* Not supported */
2295                         pse.vmem_data = 0;
2296                         pse.vmem_code = 0;
2297                         pse.stack_size =  0;
2298
2299                         pse.io_rchar = -1;
2300                         pse.io_wchar = -1;
2301                         pse.io_syscr = -1;
2302                         pse.io_syscw = -1;
2303
2304                         ps_list_add (cmdline, cargs, &pse);
2305                 } /* for (i = 0 .. nprocs) */
2306
2307                 if (nprocs < MAXPROCENTRY)
2308                         break;
2309         } /* while (getprocs64() > 0) */
2310         ps_submit_state ("running",  running);
2311         ps_submit_state ("sleeping", sleeping);
2312         ps_submit_state ("zombies",  zombies);
2313         ps_submit_state ("stopped",  stopped);
2314         ps_submit_state ("paging",   paging);
2315         ps_submit_state ("blocked",  blocked);
2316
2317         for (ps = list_head_g; ps != NULL; ps = ps->next)
2318                 ps_submit_proc_list (ps);
2319 /* #endif HAVE_PROCINFO_H */
2320
2321 #elif KERNEL_SOLARIS
2322         /*
2323          * The Solaris section adds a few more process states and removes some
2324          * process states compared to linux. Most notably there is no "PAGING"
2325          * and "BLOCKED" state for a process.  The rest is similar to the linux
2326          * code.
2327          */
2328         int running = 0;
2329         int sleeping = 0;
2330         int zombies = 0;
2331         int stopped = 0;
2332         int detached = 0;
2333         int daemon = 0;
2334         int system = 0;
2335         int orphan = 0;
2336
2337         struct dirent *ent;
2338         DIR *proc;
2339
2340         int status;
2341         procstat_t *ps_ptr;
2342         char state;
2343
2344         char cmdline[PRARGSZ];
2345
2346         ps_list_reset ();
2347
2348         proc = opendir ("/proc");
2349         if (proc == NULL)
2350                 return (-1);
2351
2352         while ((ent = readdir(proc)) != NULL)
2353         {
2354                 long pid;
2355                 struct procstat ps;
2356                 procstat_entry_t pse;
2357                 char *endptr;
2358
2359                 if (!isdigit ((int) ent->d_name[0]))
2360                         continue;
2361
2362                 pid = strtol (ent->d_name, &endptr, 10);
2363                 if (*endptr != 0) /* value didn't completely parse as a number */
2364                         continue;
2365
2366                 status = ps_read_process (pid, &ps, &state);
2367                 if (status != 0)
2368                 {
2369                         DEBUG("ps_read_process failed: %i", status);
2370                         continue;
2371                 }
2372
2373                 pse.id = pid;
2374                 pse.age = 0;
2375
2376                 pse.num_proc   = ps.num_proc;
2377                 pse.num_lwp    = ps.num_lwp;
2378                 pse.vmem_size  = ps.vmem_size;
2379                 pse.vmem_rss   = ps.vmem_rss;
2380                 pse.vmem_data  = ps.vmem_data;
2381                 pse.vmem_code  = ps.vmem_code;
2382                 pse.stack_size = ps.stack_size;
2383
2384                 pse.vmem_minflt = 0;
2385                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2386                 pse.vmem_majflt = 0;
2387                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2388
2389                 pse.cpu_user = 0;
2390                 pse.cpu_user_counter = ps.cpu_user_counter;
2391                 pse.cpu_system = 0;
2392                 pse.cpu_system_counter = ps.cpu_system_counter;
2393
2394                 pse.io_rchar = ps.io_rchar;
2395                 pse.io_wchar = ps.io_wchar;
2396                 pse.io_syscr = ps.io_syscr;
2397                 pse.io_syscw = ps.io_syscw;
2398
2399                 switch (state)
2400                 {
2401                         case 'R': running++;  break;
2402                         case 'S': sleeping++; break;
2403                         case 'E': detached++; break;
2404                         case 'Z': zombies++;  break;
2405                         case 'T': stopped++;  break;
2406                         case 'A': daemon++;   break;
2407                         case 'Y': system++;   break;
2408                         case 'O': orphan++;   break;
2409                 }
2410
2411
2412                 ps_list_add (ps.name,
2413                                 ps_get_cmdline (pid, cmdline, sizeof (cmdline)),
2414                                 &pse);
2415         } /* while(readdir) */
2416         closedir (proc);
2417
2418         ps_submit_state ("running",  running);
2419         ps_submit_state ("sleeping", sleeping);
2420         ps_submit_state ("zombies",  zombies);
2421         ps_submit_state ("stopped",  stopped);
2422         ps_submit_state ("detached", detached);
2423         ps_submit_state ("daemon",   daemon);
2424         ps_submit_state ("system",   system);
2425         ps_submit_state ("orphan",   orphan);
2426
2427         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2428                 ps_submit_proc_list (ps_ptr);
2429
2430         read_fork_rate();
2431 #endif /* KERNEL_SOLARIS */
2432
2433         return (0);
2434 } /* int ps_read */
2435
2436 void module_register (void)
2437 {
2438         plugin_register_complex_config ("processes", ps_config);
2439         plugin_register_init ("processes", ps_init);
2440         plugin_register_read ("processes", ps_read);
2441 } /* void module_register */