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                         sfree (new);
 292                         return;
 293                 }
 294         }
 295 #else
 296         if (regexp != NULL)
 297         {
 298                 ERROR ("processes plugin: ps_list_register: "
 299                                 "Regular expression \"%s\" found in config "
 300                                 "file, but support for regular expressions "
 301                                 "has been disabled at compile time.",
 302                                 regexp);
 303                 sfree (new);
 304                 return;
 305         }
 306 #endif
 307
 308         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 309         {
 310                 if (strcmp (ptr->name, name) == 0)
 311                 {
 312                         WARNING ("processes plugin: You have configured more "
 313                                         "than one `Process' or "
 314                                         "`ProcessMatch' with the same name. "
 315                                         "All but the first setting will be "
 316                                         "ignored.");
 317                         sfree (new->re);
 318                         sfree (new);
 319                         return;
 320                 }
 321
 322                 if (ptr->next == NULL)
 323                         break;
 324         }
 325
 326         if (ptr == NULL)
 327                 list_head_g = new;
 328         else
 329                 ptr->next = new;
 330 } /* void ps_list_register */
 331
 332 /* try to match name against entry, returns 1 if success */
 333 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 334 {
 335 #if HAVE_REGEX_H
 336         if (ps->re != NULL)
 337         {
 338                 int status;
 339                 const char *str;
 340
 341                 str = cmdline;
 342                 if ((str == NULL) || (str[0] == 0))
 343                         str = name;
 344
 345                 assert (str != NULL);
 346
 347                 status = regexec (ps->re, str,
 348                                 /* nmatch = */ 0,
 349                                 /* pmatch = */ NULL,
 350                                 /* eflags = */ 0);
 351                 if (status == 0)
 352                         return (1);
 353         }
 354         else
 355 #endif
 356         if (strcmp (ps->name, name) == 0)
 357                 return (1);
 358
 359         return (0);
 360 } /* int ps_list_match */
 361
 362 /* add process entry to 'instances' of process 'name' (or refresh it) */
 363 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 364 {
 365         procstat_t *ps;
 366         procstat_entry_t *pse;
 367
 368         if (entry->id == 0)
 369                 return;
 370
 371         for (ps = list_head_g; ps != NULL; ps = ps->next)
 372         {
 373                 if ((ps_list_match (name, cmdline, ps)) == 0)
 374                         continue;
 375
 376                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 377                         if ((pse->id == entry->id) || (pse->next == NULL))
 378                                 break;
 379
 380                 if ((pse == NULL) || (pse->id != entry->id))
 381                 {
 382                         procstat_entry_t *new;
 383
 384                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 385                         if (new == NULL)
 386                                 return;
 387                         memset (new, 0, sizeof (procstat_entry_t));
 388                         new->id = entry->id;
 389
 390                         if (pse == NULL)
 391                                 ps->instances = new;
 392                         else
 393                                 pse->next = new;
 394
 395                         pse = new;
 396                 }
 397
 398                 pse->age = 0;
 399                 pse->num_proc   = entry->num_proc;
 400                 pse->num_lwp    = entry->num_lwp;
 401                 pse->vmem_size  = entry->vmem_size;
 402                 pse->vmem_rss   = entry->vmem_rss;
 403                 pse->vmem_data  = entry->vmem_data;
 404                 pse->vmem_code  = entry->vmem_code;
 405                 pse->stack_size = entry->stack_size;
 406                 pse->io_rchar   = entry->io_rchar;
 407                 pse->io_wchar   = entry->io_wchar;
 408                 pse->io_syscr   = entry->io_syscr;
 409                 pse->io_syscw   = entry->io_syscw;
 410                 pse->cswitch_vol   = entry->cswitch_vol;
 411                 pse->cswitch_invol = entry->cswitch_invol;
 412
 413                 ps->num_proc   += pse->num_proc;
 414                 ps->num_lwp    += pse->num_lwp;
 415                 ps->vmem_size  += pse->vmem_size;
 416                 ps->vmem_rss   += pse->vmem_rss;
 417                 ps->vmem_data  += pse->vmem_data;
 418                 ps->vmem_code  += pse->vmem_code;
 419                 ps->stack_size += pse->stack_size;
 420
 421                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 422                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 423                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 424                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 425
 426                 ps->cswitch_vol   += ((pse->cswitch_vol == -1)?0:pse->cswitch_vol);
 427                 ps->cswitch_invol += ((pse->cswitch_invol == -1)?0:pse->cswitch_invol);
 428
 429                 if ((entry->vmem_minflt_counter == 0)
 430                                 && (entry->vmem_majflt_counter == 0))
 431                 {
 432                         pse->vmem_minflt_counter += entry->vmem_minflt;
 433                         pse->vmem_minflt = entry->vmem_minflt;
 434
 435                         pse->vmem_majflt_counter += entry->vmem_majflt;
 436                         pse->vmem_majflt = entry->vmem_majflt;
 437                 }
 438                 else
 439                 {
 440                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 441                         {
 442                                 pse->vmem_minflt = entry->vmem_minflt_counter
 443                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 444                         }
 445                         else
 446                         {
 447                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 448                         }
 449                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 450
 451                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 452                         {
 453                                 pse->vmem_majflt = entry->vmem_majflt_counter
 454                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 455                         }
 456                         else
 457                         {
 458                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 459                         }
 460                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 461                 }
 462
 463                 ps->vmem_minflt_counter += pse->vmem_minflt;
 464                 ps->vmem_majflt_counter += pse->vmem_majflt;
 465
 466                 if ((entry->cpu_user_counter == 0)
 467                                 && (entry->cpu_system_counter == 0))
 468                 {
 469                         pse->cpu_user_counter += entry->cpu_user;
 470                         pse->cpu_user = entry->cpu_user;
 471
 472                         pse->cpu_system_counter += entry->cpu_system;
 473                         pse->cpu_system = entry->cpu_system;
 474                 }
 475                 else
 476                 {
 477                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 478                         {
 479                                 pse->cpu_user = entry->cpu_user_counter
 480                                         + (ULONG_MAX - pse->cpu_user_counter);
 481                         }
 482                         else
 483                         {
 484                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 485                         }
 486                         pse->cpu_user_counter = entry->cpu_user_counter;
 487
 488                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 489                         {
 490                                 pse->cpu_system = entry->cpu_system_counter
 491                                         + (ULONG_MAX - pse->cpu_system_counter);
 492                         }
 493                         else
 494                         {
 495                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 496                         }
 497                         pse->cpu_system_counter = entry->cpu_system_counter;
 498                 }
 499
 500                 ps->cpu_user_counter   += pse->cpu_user;
 501                 ps->cpu_system_counter += pse->cpu_system;
 502         }
 503 }
 504
 505 /* remove old entries from instances of processes in list_head_g */
 506 static void ps_list_reset (void)
 507 {
 508         procstat_t *ps;
 509         procstat_entry_t *pse;
 510         procstat_entry_t *pse_prev;
 511
 512         for (ps = list_head_g; ps != NULL; ps = ps->next)
 513         {
 514                 ps->num_proc    = 0;
 515                 ps->num_lwp     = 0;
 516                 ps->vmem_size   = 0;
 517                 ps->vmem_rss    = 0;
 518                 ps->vmem_data   = 0;
 519                 ps->vmem_code   = 0;
 520                 ps->stack_size  = 0;
 521                 ps->io_rchar = -1;
 522                 ps->io_wchar = -1;
 523                 ps->io_syscr = -1;
 524                 ps->io_syscw = -1;
 525                 ps->cswitch_vol   = -1;
 526                 ps->cswitch_invol = -1;
 527
 528                 pse_prev = NULL;
 529                 pse = ps->instances;
 530                 while (pse != NULL)
 531                 {
 532                         if (pse->age > 10)
 533                         {
 534                                 DEBUG ("Removing this procstat entry cause it's too old: "
 535                                                 "id = %lu; name = %s;",
 536                                                 pse->id, ps->name);
 537
 538                                 if (pse_prev == NULL)
 539                                 {
 540                                         ps->instances = pse->next;
 541                                         free (pse);
 542                                         pse = ps->instances;
 543                                 }
 544                                 else
 545                                 {
 546                                         pse_prev->next = pse->next;
 547                                         free (pse);
 548                                         pse = pse_prev->next;
 549                                 }
 550                         }
 551                         else
 552                         {
 553                                 pse->age++;
 554                                 pse_prev = pse;
 555                                 pse = pse->next;
 556                         }
 557                 } /* while (pse != NULL) */
 558         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 559 }
 560
 561 /* put all pre-defined 'Process' names from config to list_head_g tree */
 562 static int ps_config (oconfig_item_t *ci)
 563 {
 564         int i;
 565
 566         for (i = 0; i < ci->children_num; ++i) {
 567                 oconfig_item_t *c = ci->children + i;
 568
 569                 if (strcasecmp (c->key, "Process") == 0)
 570                 {
 571                         if ((c->values_num != 1)
 572                                         || (OCONFIG_TYPE_STRING != c->values[0].type)) {
 573                                 ERROR ("processes plugin: `Process' expects exactly "
 574                                                 "one string argument (got %i).",
 575                                                 c->values_num);
 576                                 continue;
 577                         }
 578
 579                         if (c->children_num != 0) {
 580                                 WARNING ("processes plugin: the `Process' config option "
 581                                                 "does not expect any child elements -- ignoring "
 582                                                 "content (%i elements) of the <Process '%s'> block.",
 583                                                 c->children_num, c->values[0].value.string);
 584                         }
 585
 586                         ps_list_register (c->values[0].value.string, NULL);
 587                 }
 588                 else if (strcasecmp (c->key, "ProcessMatch") == 0)
 589                 {
 590                         if ((c->values_num != 2)
 591                                         || (OCONFIG_TYPE_STRING != c->values[0].type)
 592                                         || (OCONFIG_TYPE_STRING != c->values[1].type))
 593                         {
 594                                 ERROR ("processes plugin: `ProcessMatch' needs exactly "
 595                                                 "two string arguments (got %i).",
 596                                                 c->values_num);
 597                                 continue;
 598                         }
 599
 600                         if (c->children_num != 0) {
 601                                 WARNING ("processes plugin: the `ProcessMatch' config option "
 602                                                 "does not expect any child elements -- ignoring "
 603                                                 "content (%i elements) of the <ProcessMatch '%s' '%s'> "
 604                                                 "block.", c->children_num, c->values[0].value.string,
 605                                                 c->values[1].value.string);
 606                         }
 607
 608                         ps_list_register (c->values[0].value.string,
 609                                         c->values[1].value.string);
 610                 }
 611                 else if (strcasecmp (c->key, "CollectContextSwitch") == 0)
 612                 {
 613                         cf_util_get_boolean (c, &report_ctx_switch);
 614                 }
 615                 else
 616                 {
 617                         ERROR ("processes plugin: The `%s' configuration option is not "
 618                                         "understood and will be ignored.", c->key);
 619                         continue;
 620                 }
 621         }
 622
 623         return (0);
 624 }
 625
 626 static int ps_init (void)
 627 {
 628 #if HAVE_THREAD_INFO
 629         kern_return_t status;
 630
 631         port_host_self = mach_host_self ();
 632         port_task_self = mach_task_self ();
 633
 634         if (pset_list != NULL)
 635         {
 636                 vm_deallocate (port_task_self,
 637                                 (vm_address_t) pset_list,
 638                                 pset_list_len * sizeof (processor_set_t));
 639                 pset_list = NULL;
 640                 pset_list_len = 0;
 641         }
 642
 643         if ((status = host_processor_sets (port_host_self,
 644                                         &pset_list,
 645                                         &pset_list_len)) != KERN_SUCCESS)
 646         {
 647                 ERROR ("host_processor_sets failed: %s\n",
 648                                 mach_error_string (status));
 649                 pset_list = NULL;
 650                 pset_list_len = 0;
 651                 return (-1);
 652         }
 653 /* #endif HAVE_THREAD_INFO */
 654
 655 #elif KERNEL_LINUX
 656         pagesize_g = sysconf(_SC_PAGESIZE);
 657         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 658                         pagesize_g, CONFIG_HZ);
 659 /* #endif KERNEL_LINUX */
 660
 661 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 662         pagesize = getpagesize();
 663 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 664
 665 #elif HAVE_PROCINFO_H
 666         pagesize = getpagesize();
 667 #endif /* HAVE_PROCINFO_H */
 668
 669         return (0);
 670 } /* int ps_init */
 671
 672 /* submit global state (e.g.: qty of zombies, running, etc..) */
 673 static void ps_submit_state (const char *state, double value)
 674 {
 675         value_t values[1];
 676         value_list_t vl = VALUE_LIST_INIT;
 677
 678         values[0].gauge = value;
 679
 680         vl.values = values;
 681         vl.values_len = 1;
 682         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 683         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 684         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 685         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 686         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 687
 688         plugin_dispatch_values (&vl);
 689 }
 690
 691 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 692 static void ps_submit_proc_list (procstat_t *ps)
 693 {
 694         value_t values[2];
 695         value_list_t vl = VALUE_LIST_INIT;
 696
 697         vl.values = values;
 698         vl.values_len = 2;
 699         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 700         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 701         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 702
 703         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 704         vl.values[0].gauge = ps->vmem_size;
 705         vl.values_len = 1;
 706         plugin_dispatch_values (&vl);
 707
 708         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 709         vl.values[0].gauge = ps->vmem_rss;
 710         vl.values_len = 1;
 711         plugin_dispatch_values (&vl);
 712
 713         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 714         vl.values[0].gauge = ps->vmem_data;
 715         vl.values_len = 1;
 716         plugin_dispatch_values (&vl);
 717
 718         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 719         vl.values[0].gauge = ps->vmem_code;
 720         vl.values_len = 1;
 721         plugin_dispatch_values (&vl);
 722
 723         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 724         vl.values[0].gauge = ps->stack_size;
 725         vl.values_len = 1;
 726         plugin_dispatch_values (&vl);
 727
 728         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 729         vl.values[0].derive = ps->cpu_user_counter;
 730         vl.values[1].derive = ps->cpu_system_counter;
 731         vl.values_len = 2;
 732         plugin_dispatch_values (&vl);
 733
 734         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 735         vl.values[0].gauge = ps->num_proc;
 736         vl.values[1].gauge = ps->num_lwp;
 737         vl.values_len = 2;
 738         plugin_dispatch_values (&vl);
 739
 740         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 741         vl.values[0].derive = ps->vmem_minflt_counter;
 742         vl.values[1].derive = ps->vmem_majflt_counter;
 743         vl.values_len = 2;
 744         plugin_dispatch_values (&vl);
 745
 746         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 747         {
 748                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 749                 vl.values[0].derive = ps->io_rchar;
 750                 vl.values[1].derive = ps->io_wchar;
 751                 vl.values_len = 2;
 752                 plugin_dispatch_values (&vl);
 753         }
 754
 755         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 756         {
 757                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 758                 vl.values[0].derive = ps->io_syscr;
 759                 vl.values[1].derive = ps->io_syscw;
 760                 vl.values_len = 2;
 761                 plugin_dispatch_values (&vl);
 762         }
 763
 764         if ( report_ctx_switch )
 765         {
 766                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 767                 sstrncpy (vl.type_instance, "voluntary", sizeof (vl.type_instance));
 768                 vl.values[0].derive = ps->cswitch_vol;
 769                 vl.values_len = 1;
 770                 plugin_dispatch_values (&vl);
 771
 772                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 773                 sstrncpy (vl.type_instance, "involuntary", sizeof (vl.type_instance));
 774                 vl.values[0].derive = ps->cswitch_invol;
 775                 vl.values_len = 1;
 776                 plugin_dispatch_values (&vl);
 777         }
 778
 779         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 780                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 781                         "vmem_code = %lu; "
 782                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 783                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 784                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 785                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 786                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 787                         ps->name, ps->num_proc, ps->num_lwp,
 788                         ps->vmem_size, ps->vmem_rss,
 789                         ps->vmem_data, ps->vmem_code,
 790                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 791                         ps->cpu_user_counter, ps->cpu_system_counter,
 792                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 793                         ps->cswitch_vol, ps->cswitch_invol);
 794 } /* void ps_submit_proc_list */
 795
 796 #if KERNEL_LINUX || KERNEL_SOLARIS
 797 static void ps_submit_fork_rate (derive_t value)
 798 {
 799         value_t values[1];
 800         value_list_t vl = VALUE_LIST_INIT;
 801
 802         values[0].derive = value;
 803
 804         vl.values = values;
 805         vl.values_len = 1;
 806         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 807         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 808         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 809         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 810         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 811
 812         plugin_dispatch_values(&vl);
 813 }
 814 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 815
 816 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 817 #if KERNEL_LINUX
 818 static procstat_t *ps_read_tasks_status (int pid, procstat_t *ps)
 819 {
 820         char           dirname[64];
 821         DIR           *dh;
 822         char           filename[64];
 823         FILE          *fh;
 824         struct dirent *ent;
 825         derive_t cswitch_vol = 0;
 826         derive_t cswitch_invol = 0;
 827         char buffer[1024];
 828         char *fields[8];
 829         int numfields;
 830
 831         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 832
 833         if ((dh = opendir (dirname)) == NULL)
 834         {
 835                 DEBUG ("Failed to open directory `%s'", dirname);
 836                 return (NULL);
 837         }
 838
 839         while ((ent = readdir (dh)) != NULL)
 840         {
 841                 char *tpid;
 842
 843                 if (!isdigit ((int) ent->d_name[0]))
 844                         continue;
 845
 846                 tpid = ent->d_name;
 847
 848                 ssnprintf (filename, sizeof (filename), "/proc/%i/task/%s/status", pid, tpid);
 849                 if ((fh = fopen (filename, "r")) == NULL)
 850                 {
 851                         DEBUG ("Failed to open file `%s'", filename);
 852                         continue;
 853                 }
 854
 855                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 856                 {
 857                         derive_t tmp;
 858                         char *endptr;
 859
 860                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 861                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 862                                 continue;
 863
 864                         numfields = strsplit (buffer, fields,
 865                                 STATIC_ARRAY_SIZE (fields));
 866
 867                         if (numfields < 2)
 868                                 continue;
 869
 870                         errno = 0;
 871                         endptr = NULL;
 872                         tmp = (derive_t) strtoll (fields[1], &endptr, /* base = */ 10);
 873                         if ((errno == 0) && (endptr != fields[1]))
 874                         {
 875                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 876                                 {
 877                                         cswitch_vol += tmp;
 878                                 }
 879                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 880                                 {
 881                                         cswitch_invol += tmp;
 882                                 }
 883                         }
 884                 } /* while (fgets) */
 885
 886                 if (fclose (fh))
 887                 {
 888                         char errbuf[1024];
 889                                 WARNING ("processes: fclose: %s",
 890                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 891                 }
 892         }
 893         closedir (dh);
 894
 895         ps->cswitch_vol = cswitch_vol;
 896         ps->cswitch_invol = cswitch_invol;
 897
 898         return (ps);
 899 } /* int *ps_read_tasks_status */
 900
 901 /* Read data from /proc/pid/status */
 902 static procstat_t *ps_read_status (int pid, procstat_t *ps)
 903 {
 904         FILE *fh;
 905         char buffer[1024];
 906         char filename[64];
 907         unsigned long lib = 0;
 908         unsigned long exe = 0;
 909         unsigned long data = 0;
 910         unsigned long threads = 0;
 911         char *fields[8];
 912         int numfields;
 913
 914         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 915         if ((fh = fopen (filename, "r")) == NULL)
 916                 return (NULL);
 917
 918         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 919         {
 920                 unsigned long tmp;
 921                 char *endptr;
 922
 923                 if (strncmp (buffer, "Vm", 2) != 0
 924                                 && strncmp (buffer, "Threads", 7) != 0)
 925                         continue;
 926
 927                 numfields = strsplit (buffer, fields,
 928                                 STATIC_ARRAY_SIZE (fields));
 929
 930                 if (numfields < 2)
 931                         continue;
 932
 933                 errno = 0;
 934                 endptr = NULL;
 935                 tmp = strtoul (fields[1], &endptr, /* base = */ 10);
 936                 if ((errno == 0) && (endptr != fields[1]))
 937                 {
 938                         if (strncmp (buffer, "VmData", 6) == 0)
 939                         {
 940                                 data = tmp;
 941                         }
 942                         else if (strncmp (buffer, "VmLib", 5) == 0)
 943                         {
 944                                 lib = tmp;
 945                         }
 946                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 947                         {
 948                                 exe = tmp;
 949                         }
 950                         else if  (strncmp(buffer, "Threads", 7) == 0)
 951                         {
 952                                 threads = tmp;
 953                         }
 954                 }
 955         } /* while (fgets) */
 956
 957         if (fclose (fh))
 958         {
 959                 char errbuf[1024];
 960                 WARNING ("processes: fclose: %s",
 961                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 962         }
 963
 964         ps->vmem_data = data * 1024;
 965         ps->vmem_code = (exe + lib) * 1024;
 966         if (threads != 0)
 967                 ps->num_lwp = threads;
 968
 969         return (ps);
 970 } /* procstat_t *ps_read_vmem */
 971
 972 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 973 {
 974         FILE *fh;
 975         char buffer[1024];
 976         char filename[64];
 977
 978         char *fields[8];
 979         int numfields;
 980
 981         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 982         if ((fh = fopen (filename, "r")) == NULL)
 983                 return (NULL);
 984
 985         while (fgets (buffer, sizeof (buffer), fh) != NULL)
 986         {
 987                 derive_t *val = NULL;
 988                 long long tmp;
 989                 char *endptr;
 990
 991                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 992                         val = &(ps->io_rchar);
 993                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 994                         val = &(ps->io_wchar);
 995                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 996                         val = &(ps->io_syscr);
 997                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 998                         val = &(ps->io_syscw);
 999                 else
1000                         continue;
1001
1002                 numfields = strsplit (buffer, fields,
1003                                 STATIC_ARRAY_SIZE (fields));
1004
1005                 if (numfields < 2)
1006                         continue;
1007
1008                 errno = 0;
1009                 endptr = NULL;
1010                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
1011                 if ((errno != 0) || (endptr == fields[1]))
1012                         *val = -1;
1013                 else
1014                         *val = (derive_t) tmp;
1015         } /* while (fgets) */
1016
1017         if (fclose (fh))
1018         {
1019                 char errbuf[1024];
1020                 WARNING ("processes: fclose: %s",
1021                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1022         }
1023
1024         return (ps);
1025 } /* procstat_t *ps_read_io */
1026
1027 int ps_read_process (int pid, procstat_t *ps, char *state)
1028 {
1029         char  filename[64];
1030         char  buffer[1024];
1031
1032         char *fields[64];
1033         char  fields_len;
1034
1035         size_t buffer_len;
1036
1037         char  *buffer_ptr;
1038         size_t name_start_pos;
1039         size_t name_end_pos;
1040         size_t name_len;
1041
1042         derive_t cpu_user_counter;
1043         derive_t cpu_system_counter;
1044         long long unsigned vmem_size;
1045         long long unsigned vmem_rss;
1046         long long unsigned stack_size;
1047
1048         ssize_t status;
1049
1050         memset (ps, 0, sizeof (procstat_t));
1051
1052         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
1053
1054         status = read_file_contents (filename, buffer, sizeof(buffer) - 1);
1055         if (status <= 0)
1056                 return (-1);
1057         buffer_len = (size_t) status;
1058         buffer[buffer_len] = 0;
1059
1060         /* The name of the process is enclosed in parens. Since the name can
1061          * contain parens itself, spaces, numbers and pretty much everything
1062          * else, use these to determine the process name. We don't use
1063          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1064          * otherwise be required to determine name_len. */
1065         name_start_pos = 0;
1066         while ((buffer[name_start_pos] != '(')
1067                         && (name_start_pos < buffer_len))
1068                 name_start_pos++;
1069
1070         name_end_pos = buffer_len;
1071         while ((buffer[name_end_pos] != ')')
1072                         && (name_end_pos > 0))
1073                 name_end_pos--;
1074
1075         /* Either '(' or ')' is not found or they are in the wrong order.
1076          * Anyway, something weird that shouldn't happen ever. */
1077         if (name_start_pos >= name_end_pos)
1078         {
1079                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1080                                 name_start_pos, name_end_pos);
1081                 return (-1);
1082         }
1083
1084         name_len = (name_end_pos - name_start_pos) - 1;
1085         if (name_len >= sizeof (ps->name))
1086                 name_len = sizeof (ps->name) - 1;
1087
1088         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1089
1090         if ((buffer_len - name_end_pos) < 2)
1091                 return (-1);
1092         buffer_ptr = &buffer[name_end_pos + 2];
1093
1094         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1095         if (fields_len < 22)
1096         {
1097                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
1098                                 " `%s' has only %i fields..",
1099                                 (int) pid, filename, fields_len);
1100                 return (-1);
1101         }
1102
1103         *state = fields[0][0];
1104
1105         if (*state == 'Z')
1106         {
1107                 ps->num_lwp  = 0;
1108                 ps->num_proc = 0;
1109         }
1110         else
1111         {
1112                 ps->num_lwp = strtoul (fields[17], /* endptr = */ NULL, /* base = */ 10);
1113                 if ((ps_read_status(pid, ps)) == NULL)
1114                 {
1115                         /* No VMem data */
1116                         ps->vmem_data = -1;
1117                         ps->vmem_code = -1;
1118                         DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
1119                 }
1120                 if (ps->num_lwp <= 0)
1121                         ps->num_lwp = 1;
1122                 ps->num_proc = 1;
1123         }
1124
1125         /* Leave the rest at zero if this is only a zombi */
1126         if (ps->num_proc == 0)
1127         {
1128                 DEBUG ("processes plugin: This is only a zombie: pid = %i; "
1129                                 "name = %s;", pid, ps->name);
1130                 return (0);
1131         }
1132
1133         cpu_user_counter   = atoll (fields[11]);
1134         cpu_system_counter = atoll (fields[12]);
1135         vmem_size          = atoll (fields[20]);
1136         vmem_rss           = atoll (fields[21]);
1137         ps->vmem_minflt_counter = atol (fields[7]);
1138         ps->vmem_majflt_counter = atol (fields[9]);
1139
1140         {
1141                 unsigned long long stack_start = atoll (fields[25]);
1142                 unsigned long long stack_ptr   = atoll (fields[26]);
1143
1144                 stack_size = (stack_start > stack_ptr)
1145                         ? stack_start - stack_ptr
1146                         : stack_ptr - stack_start;
1147         }
1148
1149         /* Convert jiffies to useconds */
1150         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1151         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1152         vmem_rss = vmem_rss * pagesize_g;
1153
1154         ps->cpu_user_counter = cpu_user_counter;
1155         ps->cpu_system_counter = cpu_system_counter;
1156         ps->vmem_size = (unsigned long) vmem_size;
1157         ps->vmem_rss = (unsigned long) vmem_rss;
1158         ps->stack_size = (unsigned long) stack_size;
1159
1160         if ( (ps_read_io (pid, ps)) == NULL)
1161         {
1162                 /* no io data */
1163                 ps->io_rchar = -1;
1164                 ps->io_wchar = -1;
1165                 ps->io_syscr = -1;
1166                 ps->io_syscw = -1;
1167
1168                 DEBUG("ps_read_process: not get io data for pid %i",pid);
1169         }
1170
1171         if ( report_ctx_switch )
1172         {
1173                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1174                 {
1175                         ps->cswitch_vol = -1;
1176                         ps->cswitch_invol = -1;
1177
1178                         DEBUG("ps_read_tasks_status: not get context "
1179                                         "switch data for pid %i",pid);
1180                 }
1181         }
1182
1183         /* success */
1184         return (0);
1185 } /* int ps_read_process (...) */
1186
1187 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
1188 {
1189         char  *buf_ptr;
1190         size_t len;
1191
1192         char file[PATH_MAX];
1193         int  fd;
1194
1195         size_t n;
1196
1197         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1198                 return NULL;
1199
1200         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1201                         (unsigned int) pid);
1202
1203         errno = 0;
1204         fd = open (file, O_RDONLY);
1205         if (fd < 0) {
1206                 char errbuf[4096];
1207                 /* ENOENT means the process exited while we were handling it.
1208                  * Don't complain about this, it only fills the logs. */
1209                 if (errno != ENOENT)
1210                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1211                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1212                 return NULL;
1213         }
1214
1215         buf_ptr = buf;
1216         len     = buf_len;
1217
1218         n = 0;
1219
1220         while (42) {
1221                 ssize_t status;
1222
1223                 status = read (fd, (void *)buf_ptr, len);
1224
1225                 if (status < 0) {
1226                         char errbuf[1024];
1227
1228                         if ((EAGAIN == errno) || (EINTR == errno))
1229                                 continue;
1230
1231                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1232                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1233                         close (fd);
1234                         return NULL;
1235                 }
1236
1237                 n += status;
1238
1239                 if (status == 0)
1240                         break;
1241
1242                 buf_ptr += status;
1243                 len     -= status;
1244
1245                 if (len <= 0)
1246                         break;
1247         }
1248
1249         close (fd);
1250
1251         if (0 == n) {
1252                 /* cmdline not available; e.g. kernel thread, zombie */
1253                 if (NULL == name)
1254                         return NULL;
1255
1256                 ssnprintf (buf, buf_len, "[%s]", name);
1257                 return buf;
1258         }
1259
1260         assert (n <= buf_len);
1261
1262         if (n == buf_len)
1263                 --n;
1264         buf[n] = '\0';
1265
1266         --n;
1267         /* remove trailing whitespace */
1268         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1269                 buf[n] = '\0';
1270                 --n;
1271         }
1272
1273         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1274         while (n > 0) {
1275                 if ('\0' == buf[n])
1276                         buf[n] = ' ';
1277                 --n;
1278         }
1279         return buf;
1280 } /* char *ps_get_cmdline (...) */
1281
1282 static int read_fork_rate ()
1283 {
1284         FILE *proc_stat;
1285         char buffer[1024];
1286         value_t value;
1287         _Bool value_valid = 0;
1288
1289         proc_stat = fopen ("/proc/stat", "r");
1290         if (proc_stat == NULL)
1291         {
1292                 char errbuf[1024];
1293                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1294                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1295                 return (-1);
1296         }
1297
1298         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1299         {
1300                 int status;
1301                 char *fields[3];
1302                 int fields_num;
1303
1304                 fields_num = strsplit (buffer, fields,
1305                                 STATIC_ARRAY_SIZE (fields));
1306                 if (fields_num != 2)
1307                         continue;
1308
1309                 if (strcmp ("processes", fields[0]) != 0)
1310                         continue;
1311
1312                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1313                 if (status == 0)
1314                         value_valid = 1;
1315
1316                 break;
1317         }
1318         fclose(proc_stat);
1319
1320         if (!value_valid)
1321                 return (-1);
1322
1323         ps_submit_fork_rate (value.derive);
1324         return (0);
1325 }
1326 #endif /*KERNEL_LINUX */
1327
1328 #if KERNEL_SOLARIS
1329 static const char *ps_get_cmdline (long pid, /* {{{ */
1330                 char *buffer, size_t buffer_size)
1331 {
1332         char path[PATH_MAX];
1333         psinfo_t info;
1334         ssize_t status;
1335
1336         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1337
1338         status = read_file_contents (path, (void *) &info, sizeof (info));
1339         if ((status < 0) || (((size_t) status) != sizeof (info)))
1340         {
1341                 ERROR ("processes plugin: Unexpected return value "
1342                                 "while reading \"%s\": "
1343                                 "Returned %zd but expected %zu.",
1344                                 path, status, buffer_size);
1345                 return (NULL);
1346         }
1347
1348         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1349         sstrncpy (buffer, info.pr_psargs, buffer_size);
1350
1351         return (buffer);
1352 } /* }}} int ps_get_cmdline */
1353
1354 /*
1355  * Reads process information on the Solaris OS. The information comes mainly from
1356  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1357  * The values for input and ouput chars are calculated "by hand"
1358  * Added a few "solaris" specific process states as well
1359  */
1360 static int ps_read_process(long pid, procstat_t *ps, char *state)
1361 {
1362         char filename[64];
1363         char f_psinfo[64], f_usage[64];
1364         char *buffer;
1365
1366         pstatus_t *myStatus;
1367         psinfo_t *myInfo;
1368         prusage_t *myUsage;
1369
1370         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1371         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1372         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1373
1374
1375         buffer = malloc(sizeof (pstatus_t));
1376         memset(buffer, 0, sizeof (pstatus_t));
1377         read_file_contents(filename, buffer, sizeof (pstatus_t));
1378         myStatus = (pstatus_t *) buffer;
1379
1380         buffer = malloc(sizeof (psinfo_t));
1381         memset(buffer, 0, sizeof(psinfo_t));
1382         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1383         myInfo = (psinfo_t *) buffer;
1384
1385         buffer = malloc(sizeof (prusage_t));
1386         memset(buffer, 0, sizeof(prusage_t));
1387         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1388         myUsage = (prusage_t *) buffer;
1389
1390         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1391         ps->num_lwp = myStatus->pr_nlwp;
1392         if (myInfo->pr_wstat != 0) {
1393                 ps->num_proc = 0;
1394                 ps->num_lwp = 0;
1395                 *state = (char) 'Z';
1396                 return (0);
1397         } else {
1398                 ps->num_proc = 1;
1399                 ps->num_lwp = myInfo->pr_nlwp;
1400         }
1401
1402         /*
1403          * Convert system time and user time from nanoseconds to microseconds
1404          * for compatibility with the linux module
1405          */
1406         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1407         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1408
1409         /*
1410          * Convert rssize from KB to bytes to be consistent w/ the linux module
1411          */
1412         ps->vmem_rss = myInfo->pr_rssize * 1024;
1413         ps->vmem_size = myInfo->pr_size * 1024;
1414         ps->vmem_minflt_counter = myUsage->pr_minf;
1415         ps->vmem_majflt_counter = myUsage->pr_majf;
1416
1417         /*
1418          * TODO: Data and code segment calculations for Solaris
1419          */
1420
1421         ps->vmem_data = -1;
1422         ps->vmem_code = -1;
1423         ps->stack_size = myStatus->pr_stksize;
1424
1425         /*
1426          * Calculating input/ouput chars
1427          * Formula used is total chars / total blocks => chars/block
1428          * then convert input/output blocks to chars
1429          */
1430         ulong_t tot_chars = myUsage->pr_ioch;
1431         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1432         ulong_t chars_per_block = 1;
1433         if (tot_blocks != 0)
1434                 chars_per_block = tot_chars / tot_blocks;
1435         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1436         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1437         ps->io_syscr = myUsage->pr_sysc;
1438         ps->io_syscw = myUsage->pr_sysc;
1439
1440         /*
1441          * TODO: context switch counters for Solaris
1442    */
1443         ps->cswitch_vol   = -1;
1444         ps->cswitch_invol = -1;
1445
1446
1447         /*
1448          * TODO: Find way of setting BLOCKED and PAGING status
1449          */
1450
1451         *state = (char) 'R';
1452         if (myStatus->pr_flags & PR_ASLEEP)
1453                 *state = (char) 'S';
1454         else if (myStatus->pr_flags & PR_STOPPED)
1455                 *state = (char) 'T';
1456         else if (myStatus->pr_flags & PR_DETACH)
1457                 *state = (char) 'E';
1458         else if (myStatus->pr_flags & PR_DAEMON)
1459                 *state = (char) 'A';
1460         else if (myStatus->pr_flags & PR_ISSYS)
1461                 *state = (char) 'Y';
1462         else if (myStatus->pr_flags & PR_ORPHAN)
1463                 *state = (char) 'O';
1464
1465         sfree(myStatus);
1466         sfree(myInfo);
1467         sfree(myUsage);
1468
1469         return (0);
1470 }
1471
1472 /*
1473  * Reads the number of threads created since the last reboot. On Solaris these
1474  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1475  * The result is the sum for all the threads created on each cpu
1476  */
1477 static int read_fork_rate()
1478 {
1479         extern kstat_ctl_t *kc;
1480         kstat_t *ksp_chain = NULL;
1481         derive_t result = 0;
1482
1483         if (kc == NULL)
1484                 return (-1);
1485
1486         for (ksp_chain = kc->kc_chain;
1487                         ksp_chain != NULL;
1488                         ksp_chain = ksp_chain->ks_next)
1489         {
1490                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1491                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1492                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1493                 {
1494                         long long tmp;
1495
1496                         kstat_read (kc, ksp_chain, NULL);
1497
1498                         tmp = get_kstat_value(ksp_chain, "nthreads");
1499                         if (tmp != -1LL)
1500                                 result += tmp;
1501                 }
1502         }
1503
1504         ps_submit_fork_rate (result);
1505         return (0);
1506 }
1507 #endif /* KERNEL_SOLARIS */
1508
1509 #if HAVE_THREAD_INFO
1510 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1511 {
1512         int mib[4];
1513
1514         struct kinfo_proc kp;
1515         size_t            kp_size;
1516
1517         mib[0] = CTL_KERN;
1518         mib[1] = KERN_PROC;
1519         mib[2] = KERN_PROC_PID;
1520
1521         if (pid_for_task (t, pid) != KERN_SUCCESS)
1522                 return (-1);
1523         mib[3] = *pid;
1524
1525         kp_size = sizeof (kp);
1526         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1527                 return (-1);
1528
1529         if (name_max_len > (MAXCOMLEN + 1))
1530                 name_max_len = MAXCOMLEN + 1;
1531
1532         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1533         name[name_max_len - 1] = '\0';
1534
1535         DEBUG ("pid = %i; name = %s;", *pid, name);
1536
1537         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1538          * `top' does it, because it is a lot of work and only used when
1539          * debugging. -octo */
1540
1541         return (0);
1542 }
1543 #endif /* HAVE_THREAD_INFO */
1544 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1545
1546 /* do actual readings from kernel */
1547 static int ps_read (void)
1548 {
1549 #if HAVE_THREAD_INFO
1550         kern_return_t            status;
1551
1552         int                      pset;
1553         processor_set_t          port_pset_priv;
1554
1555         int                      task;
1556         task_array_t             task_list;
1557         mach_msg_type_number_t   task_list_len;
1558
1559         int                      task_pid;
1560         char                     task_name[MAXCOMLEN + 1];
1561
1562         int                      thread;
1563         thread_act_array_t       thread_list;
1564         mach_msg_type_number_t   thread_list_len;
1565         thread_basic_info_data_t thread_data;
1566         mach_msg_type_number_t   thread_data_len;
1567
1568         int running  = 0;
1569         int sleeping = 0;
1570         int zombies  = 0;
1571         int stopped  = 0;
1572         int blocked  = 0;
1573
1574         procstat_t *ps;
1575         procstat_entry_t pse;
1576
1577         ps_list_reset ();
1578
1579         /*
1580          * The Mach-concept is a little different from the traditional UNIX
1581          * concept: All the work is done in threads. Threads are contained in
1582          * `tasks'. Therefore, `task status' doesn't make much sense, since
1583          * it's actually a `thread status'.
1584          * Tasks are assigned to sets of processors, so that's where you go to
1585          * get a list.
1586          */
1587         for (pset = 0; pset < pset_list_len; pset++)
1588         {
1589                 if ((status = host_processor_set_priv (port_host_self,
1590                                                 pset_list[pset],
1591                                                 &port_pset_priv)) != KERN_SUCCESS)
1592                 {
1593                         ERROR ("host_processor_set_priv failed: %s\n",
1594                                         mach_error_string (status));
1595                         continue;
1596                 }
1597
1598                 if ((status = processor_set_tasks (port_pset_priv,
1599                                                 &task_list,
1600                                                 &task_list_len)) != KERN_SUCCESS)
1601                 {
1602                         ERROR ("processor_set_tasks failed: %s\n",
1603                                         mach_error_string (status));
1604                         mach_port_deallocate (port_task_self, port_pset_priv);
1605                         continue;
1606                 }
1607
1608                 for (task = 0; task < task_list_len; task++)
1609                 {
1610                         ps = NULL;
1611                         if (mach_get_task_name (task_list[task],
1612                                                 &task_pid,
1613                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1614                         {
1615                                 /* search for at least one match */
1616                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1617                                         /* FIXME: cmdline should be here instead of NULL */
1618                                         if (ps_list_match (task_name, NULL, ps) == 1)
1619                                                 break;
1620                         }
1621
1622                         /* Collect more detailed statistics for this process */
1623                         if (ps != NULL)
1624                         {
1625                                 task_basic_info_data_t        task_basic_info;
1626                                 mach_msg_type_number_t        task_basic_info_len;
1627                                 task_events_info_data_t       task_events_info;
1628                                 mach_msg_type_number_t        task_events_info_len;
1629                                 task_absolutetime_info_data_t task_absolutetime_info;
1630                                 mach_msg_type_number_t        task_absolutetime_info_len;
1631
1632                                 memset (&pse, '\0', sizeof (pse));
1633                                 pse.id = task_pid;
1634
1635                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1636                                 status = task_info (task_list[task],
1637                                                 TASK_BASIC_INFO,
1638                                                 (task_info_t) &task_basic_info,
1639                                                 &task_basic_info_len);
1640                                 if (status != KERN_SUCCESS)
1641                                 {
1642                                         ERROR ("task_info failed: %s",
1643                                                         mach_error_string (status));
1644                                         continue; /* with next thread_list */
1645                                 }
1646
1647                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1648                                 status = task_info (task_list[task],
1649                                                 TASK_EVENTS_INFO,
1650                                                 (task_info_t) &task_events_info,
1651                                                 &task_events_info_len);
1652                                 if (status != KERN_SUCCESS)
1653                                 {
1654                                         ERROR ("task_info failed: %s",
1655                                                         mach_error_string (status));
1656                                         continue; /* with next thread_list */
1657                                 }
1658
1659                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1660                                 status = task_info (task_list[task],
1661                                                 TASK_ABSOLUTETIME_INFO,
1662                                                 (task_info_t) &task_absolutetime_info,
1663                                                 &task_absolutetime_info_len);
1664                                 if (status != KERN_SUCCESS)
1665                                 {
1666                                         ERROR ("task_info failed: %s",
1667                                                         mach_error_string (status));
1668                                         continue; /* with next thread_list */
1669                                 }
1670
1671                                 pse.num_proc++;
1672                                 pse.vmem_size = task_basic_info.virtual_size;
1673                                 pse.vmem_rss = task_basic_info.resident_size;
1674                                 /* Does not seem to be easily exposed */
1675                                 pse.vmem_data = 0;
1676                                 pse.vmem_code = 0;
1677
1678                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1679                                 pse.vmem_majflt_counter = task_events_info.faults;
1680
1681                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1682                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1683
1684                                 /* context switch counters not implemented */
1685                                 pse.cswitch_vol   = -1;
1686                                 pse.cswitch_invol = -1;
1687                         }
1688
1689                         status = task_threads (task_list[task], &thread_list,
1690                                         &thread_list_len);
1691                         if (status != KERN_SUCCESS)
1692                         {
1693                                 /* Apple's `top' treats this case a zombie. It
1694                                  * makes sense to some extend: A `zombie'
1695                                  * thread is nonsense, since the task/process
1696                                  * is dead. */
1697                                 zombies++;
1698                                 DEBUG ("task_threads failed: %s",
1699                                                 mach_error_string (status));
1700                                 if (task_list[task] != port_task_self)
1701                                         mach_port_deallocate (port_task_self,
1702                                                         task_list[task]);
1703                                 continue; /* with next task_list */
1704                         }
1705
1706                         for (thread = 0; thread < thread_list_len; thread++)
1707                         {
1708                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1709                                 status = thread_info (thread_list[thread],
1710                                                 THREAD_BASIC_INFO,
1711                                                 (thread_info_t) &thread_data,
1712                                                 &thread_data_len);
1713                                 if (status != KERN_SUCCESS)
1714                                 {
1715                                         ERROR ("thread_info failed: %s",
1716                                                         mach_error_string (status));
1717                                         if (task_list[task] != port_task_self)
1718                                                 mach_port_deallocate (port_task_self,
1719                                                                 thread_list[thread]);
1720                                         continue; /* with next thread_list */
1721                                 }
1722
1723                                 if (ps != NULL)
1724                                         pse.num_lwp++;
1725
1726                                 switch (thread_data.run_state)
1727                                 {
1728                                         case TH_STATE_RUNNING:
1729                                                 running++;
1730                                                 break;
1731                                         case TH_STATE_STOPPED:
1732                                         /* What exactly is `halted'? */
1733                                         case TH_STATE_HALTED:
1734                                                 stopped++;
1735                                                 break;
1736                                         case TH_STATE_WAITING:
1737                                                 sleeping++;
1738                                                 break;
1739                                         case TH_STATE_UNINTERRUPTIBLE:
1740                                                 blocked++;
1741                                                 break;
1742                                         /* There is no `zombie' case here,
1743                                          * since there are no zombie-threads.
1744                                          * There's only zombie tasks, which are
1745                                          * handled above. */
1746                                         default:
1747                                                 WARNING ("Unknown thread status: %i",
1748                                                                 thread_data.run_state);
1749                                                 break;
1750                                 } /* switch (thread_data.run_state) */
1751
1752                                 if (task_list[task] != port_task_self)
1753                                 {
1754                                         status = mach_port_deallocate (port_task_self,
1755                                                         thread_list[thread]);
1756                                         if (status != KERN_SUCCESS)
1757                                                 ERROR ("mach_port_deallocate failed: %s",
1758                                                                 mach_error_string (status));
1759                                 }
1760                         } /* for (thread_list) */
1761
1762                         if ((status = vm_deallocate (port_task_self,
1763                                                         (vm_address_t) thread_list,
1764                                                         thread_list_len * sizeof (thread_act_t)))
1765                                         != KERN_SUCCESS)
1766                         {
1767                                 ERROR ("vm_deallocate failed: %s",
1768                                                 mach_error_string (status));
1769                         }
1770                         thread_list = NULL;
1771                         thread_list_len = 0;
1772
1773                         /* Only deallocate the task port, if it isn't our own.
1774                          * Don't know what would happen in that case, but this
1775                          * is what Apple's top does.. ;) */
1776                         if (task_list[task] != port_task_self)
1777                         {
1778                                 status = mach_port_deallocate (port_task_self,
1779                                                 task_list[task]);
1780                                 if (status != KERN_SUCCESS)
1781                                         ERROR ("mach_port_deallocate failed: %s",
1782                                                         mach_error_string (status));
1783                         }
1784
1785                         if (ps != NULL)
1786                                 /* FIXME: cmdline should be here instead of NULL */
1787                                 ps_list_add (task_name, NULL, &pse);
1788                 } /* for (task_list) */
1789
1790                 if ((status = vm_deallocate (port_task_self,
1791                                 (vm_address_t) task_list,
1792                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1793                 {
1794                         ERROR ("vm_deallocate failed: %s",
1795                                         mach_error_string (status));
1796                 }
1797                 task_list = NULL;
1798                 task_list_len = 0;
1799
1800                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1801                                 != KERN_SUCCESS)
1802                 {
1803                         ERROR ("mach_port_deallocate failed: %s",
1804                                         mach_error_string (status));
1805                 }
1806         } /* for (pset_list) */
1807
1808         ps_submit_state ("running", running);
1809         ps_submit_state ("sleeping", sleeping);
1810         ps_submit_state ("zombies", zombies);
1811         ps_submit_state ("stopped", stopped);
1812         ps_submit_state ("blocked", blocked);
1813
1814         for (ps = list_head_g; ps != NULL; ps = ps->next)
1815                 ps_submit_proc_list (ps);
1816 /* #endif HAVE_THREAD_INFO */
1817
1818 #elif KERNEL_LINUX
1819         int running  = 0;
1820         int sleeping = 0;
1821         int zombies  = 0;
1822         int stopped  = 0;
1823         int paging   = 0;
1824         int blocked  = 0;
1825
1826         struct dirent *ent;
1827         DIR           *proc;
1828         int            pid;
1829
1830         char cmdline[CMDLINE_BUFFER_SIZE];
1831
1832         int        status;
1833         procstat_t ps;
1834         procstat_entry_t pse;
1835         char       state;
1836
1837         procstat_t *ps_ptr;
1838
1839         running = sleeping = zombies = stopped = paging = blocked = 0;
1840         ps_list_reset ();
1841
1842         if ((proc = opendir ("/proc")) == NULL)
1843         {
1844                 char errbuf[1024];
1845                 ERROR ("Cannot open `/proc': %s",
1846                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1847                 return (-1);
1848         }
1849
1850         while ((ent = readdir (proc)) != NULL)
1851         {
1852                 if (!isdigit (ent->d_name[0]))
1853                         continue;
1854
1855                 if ((pid = atoi (ent->d_name)) < 1)
1856                         continue;
1857
1858                 status = ps_read_process (pid, &ps, &state);
1859                 if (status != 0)
1860                 {
1861                         DEBUG ("ps_read_process failed: %i", status);
1862                         continue;
1863                 }
1864
1865                 memset (&pse, 0, sizeof (pse));
1866                 pse.id       = pid;
1867                 pse.age      = 0;
1868
1869                 pse.num_proc   = ps.num_proc;
1870                 pse.num_lwp    = ps.num_lwp;
1871                 pse.vmem_size  = ps.vmem_size;
1872                 pse.vmem_rss   = ps.vmem_rss;
1873                 pse.vmem_data  = ps.vmem_data;
1874                 pse.vmem_code  = ps.vmem_code;
1875                 pse.stack_size = ps.stack_size;
1876
1877                 pse.vmem_minflt = 0;
1878                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1879                 pse.vmem_majflt = 0;
1880                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1881
1882                 pse.cpu_user = 0;
1883                 pse.cpu_user_counter = ps.cpu_user_counter;
1884                 pse.cpu_system = 0;
1885                 pse.cpu_system_counter = ps.cpu_system_counter;
1886
1887                 pse.io_rchar = ps.io_rchar;
1888                 pse.io_wchar = ps.io_wchar;
1889                 pse.io_syscr = ps.io_syscr;
1890                 pse.io_syscw = ps.io_syscw;
1891
1892                 pse.cswitch_vol = ps.cswitch_vol;
1893                 pse.cswitch_invol = ps.cswitch_invol;
1894
1895                 switch (state)
1896                 {
1897                         case 'R': running++;  break;
1898                         case 'S': sleeping++; break;
1899                         case 'D': blocked++;  break;
1900                         case 'Z': zombies++;  break;
1901                         case 'T': stopped++;  break;
1902                         case 'W': paging++;   break;
1903                 }
1904
1905                 ps_list_add (ps.name,
1906                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1907                                 &pse);
1908         }
1909
1910         closedir (proc);
1911
1912         ps_submit_state ("running",  running);
1913         ps_submit_state ("sleeping", sleeping);
1914         ps_submit_state ("zombies",  zombies);
1915         ps_submit_state ("stopped",  stopped);
1916         ps_submit_state ("paging",   paging);
1917         ps_submit_state ("blocked",  blocked);
1918
1919         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1920                 ps_submit_proc_list (ps_ptr);
1921
1922         read_fork_rate();
1923 /* #endif KERNEL_LINUX */
1924
1925 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1926         int running  = 0;
1927         int sleeping = 0;
1928         int zombies  = 0;
1929         int stopped  = 0;
1930         int blocked  = 0;
1931         int idle     = 0;
1932         int wait     = 0;
1933
1934         kvm_t *kd;
1935         char errbuf[_POSIX2_LINE_MAX];
1936         struct kinfo_proc *procs;          /* array of processes */
1937         struct kinfo_proc *proc_ptr = NULL;
1938         int count;                         /* returns number of processes */
1939         int i;
1940
1941         procstat_t *ps_ptr;
1942         procstat_entry_t pse;
1943
1944         ps_list_reset ();
1945
1946         /* Open the kvm interface, get a descriptor */
1947         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1948         if (kd == NULL)
1949         {
1950                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1951                                 errbuf);
1952                 return (0);
1953         }
1954
1955         /* Get the list of processes. */
1956         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1957         if (procs == NULL)
1958         {
1959                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1960                                 kvm_geterr(kd));
1961                 kvm_close (kd);
1962                 return (0);
1963         }
1964
1965         /* Iterate through the processes in kinfo_proc */
1966         for (i = 0; i < count; i++)
1967         {
1968                 /* Create only one process list entry per _process_, i.e.
1969                  * filter out threads (duplicate PID entries). */
1970                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1971                 {
1972                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1973                         _Bool have_cmdline = 0;
1974
1975                         proc_ptr = &(procs[i]);
1976                         /* Don't probe system processes and processes without arguments */
1977                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1978                                         && (procs[i].ki_args != NULL))
1979                         {
1980                                 char **argv;
1981                                 int argc;
1982                                 int status;
1983
1984                                 /* retrieve the arguments */
1985                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1986                                 argc = 0;
1987                                 if ((argv != NULL) && (argv[0] != NULL))
1988                                 {
1989                                         while (argv[argc] != NULL)
1990                                                 argc++;
1991
1992                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
1993                                         if (status < 0)
1994                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
1995                                         else
1996                                                 have_cmdline = 1;
1997                                 }
1998                         } /* if (process has argument list) */
1999
2000                         pse.id       = procs[i].ki_pid;
2001                         pse.age      = 0;
2002
2003                         pse.num_proc = 1;
2004                         pse.num_lwp  = procs[i].ki_numthreads;
2005
2006                         pse.vmem_size = procs[i].ki_size;
2007                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
2008                         pse.vmem_data = procs[i].ki_dsize * pagesize;
2009                         pse.vmem_code = procs[i].ki_tsize * pagesize;
2010                         pse.stack_size = procs[i].ki_ssize * pagesize;
2011                         pse.vmem_minflt = 0;
2012                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
2013                         pse.vmem_majflt = 0;
2014                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
2015
2016                         pse.cpu_user = 0;
2017                         pse.cpu_system = 0;
2018                         pse.cpu_user_counter = 0;
2019                         pse.cpu_system_counter = 0;
2020                         /*
2021                          * The u-area might be swapped out, and we can't get
2022                          * at it because we have a crashdump and no swap.
2023                          * If it's here fill in these fields, otherwise, just
2024                          * leave them 0.
2025                          */
2026                         if (procs[i].ki_flag & P_INMEM)
2027                         {
2028                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2029                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2030                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2031                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2032                         }
2033
2034                         /* no I/O data */
2035                         pse.io_rchar = -1;
2036                         pse.io_wchar = -1;
2037                         pse.io_syscr = -1;
2038                         pse.io_syscw = -1;
2039
2040                         /* context switch counters not implemented */
2041                         pse.cswitch_vol   = -1;
2042                         pse.cswitch_invol = -1;
2043
2044                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2045
2046                         switch (procs[i].ki_stat)
2047                         {
2048                                 case SSTOP:     stopped++;      break;
2049                                 case SSLEEP:    sleeping++;     break;
2050                                 case SRUN:      running++;      break;
2051                                 case SIDL:      idle++;         break;
2052                                 case SWAIT:     wait++;         break;
2053                                 case SLOCK:     blocked++;      break;
2054                                 case SZOMB:     zombies++;      break;
2055                         }
2056                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2057         }
2058
2059         kvm_close(kd);
2060
2061         ps_submit_state ("running",  running);
2062         ps_submit_state ("sleeping", sleeping);
2063         ps_submit_state ("zombies",  zombies);
2064         ps_submit_state ("stopped",  stopped);
2065         ps_submit_state ("blocked",  blocked);
2066         ps_submit_state ("idle",     idle);
2067         ps_submit_state ("wait",     wait);
2068
2069         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2070                 ps_submit_proc_list (ps_ptr);
2071 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2072
2073 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2074         int running  = 0;
2075         int sleeping = 0;
2076         int zombies  = 0;
2077         int stopped  = 0;
2078         int onproc   = 0;
2079         int idle     = 0;
2080         int dead     = 0;
2081
2082         kvm_t *kd;
2083         char errbuf[1024];
2084         struct kinfo_proc *procs;          /* array of processes */
2085         struct kinfo_proc *proc_ptr = NULL;
2086         int count;                         /* returns number of processes */
2087         int i;
2088
2089         procstat_t *ps_ptr;
2090         procstat_entry_t pse;
2091
2092         ps_list_reset ();
2093
2094         /* Open the kvm interface, get a descriptor */
2095         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2096         if (kd == NULL)
2097         {
2098                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2099                                 errbuf);
2100                 return (0);
2101         }
2102
2103         /* Get the list of processes. */
2104         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2105         if (procs == NULL)
2106         {
2107                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2108                                 kvm_geterr(kd));
2109                 kvm_close (kd);
2110                 return (0);
2111         }
2112
2113         /* Iterate through the processes in kinfo_proc */
2114         for (i = 0; i < count; i++)
2115         {
2116                 /* Create only one process list entry per _process_, i.e.
2117                  * filter out threads (duplicate PID entries). */
2118                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2119                 {
2120                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2121                         _Bool have_cmdline = 0;
2122
2123                         proc_ptr = &(procs[i]);
2124                         /* Don't probe zombie processes  */
2125                         if (!P_ZOMBIE(proc_ptr))
2126                         {
2127                                 char **argv;
2128                                 int argc;
2129                                 int status;
2130
2131                                 /* retrieve the arguments */
2132                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2133                                 argc = 0;
2134                                 if ((argv != NULL) && (argv[0] != NULL))
2135                                 {
2136                                         while (argv[argc] != NULL)
2137                                                 argc++;
2138
2139                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2140                                         if (status < 0)
2141                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2142                                         else
2143                                                 have_cmdline = 1;
2144                                 }
2145                         } /* if (process has argument list) */
2146
2147                         memset (&pse, 0, sizeof (pse));
2148                         pse.id       = procs[i].p_pid;
2149                         pse.age      = 0;
2150
2151                         pse.num_proc = 1;
2152                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2153
2154                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2155                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2156                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2157                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2158                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2159                         pse.vmem_minflt = 0;
2160                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2161                         pse.vmem_majflt = 0;
2162                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2163
2164                         pse.cpu_user = 0;
2165                         pse.cpu_system = 0;
2166                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2167                                                 (1000000lu * procs[i].p_uutime_sec);
2168                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2169                                                 (1000000lu * procs[i].p_ustime_sec);
2170
2171                         /* no I/O data */
2172                         pse.io_rchar = -1;
2173                         pse.io_wchar = -1;
2174                         pse.io_syscr = -1;
2175                         pse.io_syscw = -1;
2176
2177                         /* context switch counters not implemented */
2178                         pse.cswitch_vol   = -1;
2179                         pse.cswitch_invol = -1;
2180
2181                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2182
2183                         switch (procs[i].p_stat)
2184                         {
2185                                 case SSTOP:     stopped++;      break;
2186                                 case SSLEEP:    sleeping++;     break;
2187                                 case SRUN:      running++;      break;
2188                                 case SIDL:      idle++;         break;
2189                                 case SONPROC:   onproc++;       break;
2190                                 case SDEAD:     dead++;         break;
2191                                 case SZOMB:     zombies++;      break;
2192                         }
2193                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2194         }
2195
2196         kvm_close(kd);
2197
2198         ps_submit_state ("running",  running);
2199         ps_submit_state ("sleeping", sleeping);
2200         ps_submit_state ("zombies",  zombies);
2201         ps_submit_state ("stopped",  stopped);
2202         ps_submit_state ("onproc",   onproc);
2203         ps_submit_state ("idle",     idle);
2204         ps_submit_state ("dead",     dead);
2205
2206         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2207                 ps_submit_proc_list (ps_ptr);
2208 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2209
2210 #elif HAVE_PROCINFO_H
2211         /* AIX */
2212         int running  = 0;
2213         int sleeping = 0;
2214         int zombies  = 0;
2215         int stopped  = 0;
2216         int paging   = 0;
2217         int blocked  = 0;
2218
2219         pid_t pindex = 0;
2220         int nprocs;
2221
2222         procstat_t *ps;
2223         procstat_entry_t pse;
2224
2225         ps_list_reset ();
2226         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2227                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2228                                         &pindex, MAXPROCENTRY)) > 0)
2229         {
2230                 int i;
2231
2232                 for (i = 0; i < nprocs; i++)
2233                 {
2234                         tid64_t thindex;
2235                         int nthreads;
2236                         char arglist[MAXARGLN+1];
2237                         char *cargs;
2238                         char *cmdline;
2239
2240                         if (procentry[i].pi_state == SNONE) continue;
2241                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2242
2243                         cmdline = procentry[i].pi_comm;
2244                         cargs = procentry[i].pi_comm;
2245                         if ( procentry[i].pi_flags & SKPROC )
2246                         {
2247                                 if (procentry[i].pi_pid == 0)
2248                                         cmdline = "swapper";
2249                                 cargs = cmdline;
2250                         }
2251                         else
2252                         {
2253                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2254                                 {
2255                                         int n;
2256
2257                                         n = -1;
2258                                         while (++n < MAXARGLN)
2259                                         {
2260                                                 if (arglist[n] == '\0')
2261                                                 {
2262                                                         if (arglist[n+1] == '\0')
2263                                                                 break;
2264                                                         arglist[n] = ' ';
2265                                                 }
2266                                         }
2267                                         cargs = arglist;
2268                                 }
2269                         }
2270
2271                         pse.id       = procentry[i].pi_pid;
2272                         pse.age      = 0;
2273                         pse.num_lwp  = procentry[i].pi_thcount;
2274                         pse.num_proc = 1;
2275
2276                         thindex=0;
2277                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2278                                                         thrdentry, sizeof(struct thrdentry64),
2279                                                         &thindex, MAXTHRDENTRY)) > 0)
2280                         {
2281                                 int j;
2282
2283                                 for (j=0; j< nthreads; j++)
2284                                 {
2285                                         switch (thrdentry[j].ti_state)
2286                                         {
2287                                                 /* case TSNONE: break; */
2288                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2289                                                 case TSRUN:     running++;      break;
2290                                                 case TSSLEEP:   sleeping++;     break;
2291                                                 case TSSWAP:    paging++;       break;
2292                                                 case TSSTOP:    stopped++;      break;
2293                                                 case TSZOMB:    zombies++;      break;
2294                                         }
2295                                 }
2296                                 if (nthreads < MAXTHRDENTRY)
2297                                         break;
2298                         }
2299
2300                         pse.cpu_user = 0;
2301                         /* tv_usec is nanosec ??? */
2302                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2303                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2304
2305                         pse.cpu_system = 0;
2306                         /* tv_usec is nanosec ??? */
2307                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2308                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2309
2310                         pse.vmem_minflt = 0;
2311                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2312                         pse.vmem_majflt = 0;
2313                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2314
2315                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2316                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2317                         /* Not supported */
2318                         pse.vmem_data = 0;
2319                         pse.vmem_code = 0;
2320                         pse.stack_size =  0;
2321
2322                         pse.io_rchar = -1;
2323                         pse.io_wchar = -1;
2324                         pse.io_syscr = -1;
2325                         pse.io_syscw = -1;
2326
2327                         pse.cswitch_vol   = -1;
2328                         pse.cswitch_invol = -1;
2329
2330                         ps_list_add (cmdline, cargs, &pse);
2331                 } /* for (i = 0 .. nprocs) */
2332
2333                 if (nprocs < MAXPROCENTRY)
2334                         break;
2335         } /* while (getprocs64() > 0) */
2336         ps_submit_state ("running",  running);
2337         ps_submit_state ("sleeping", sleeping);
2338         ps_submit_state ("zombies",  zombies);
2339         ps_submit_state ("stopped",  stopped);
2340         ps_submit_state ("paging",   paging);
2341         ps_submit_state ("blocked",  blocked);
2342
2343         for (ps = list_head_g; ps != NULL; ps = ps->next)
2344                 ps_submit_proc_list (ps);
2345 /* #endif HAVE_PROCINFO_H */
2346
2347 #elif KERNEL_SOLARIS
2348         /*
2349          * The Solaris section adds a few more process states and removes some
2350          * process states compared to linux. Most notably there is no "PAGING"
2351          * and "BLOCKED" state for a process.  The rest is similar to the linux
2352          * code.
2353          */
2354         int running = 0;
2355         int sleeping = 0;
2356         int zombies = 0;
2357         int stopped = 0;
2358         int detached = 0;
2359         int daemon = 0;
2360         int system = 0;
2361         int orphan = 0;
2362
2363         struct dirent *ent;
2364         DIR *proc;
2365
2366         int status;
2367         procstat_t *ps_ptr;
2368         char state;
2369
2370         char cmdline[PRARGSZ];
2371
2372         ps_list_reset ();
2373
2374         proc = opendir ("/proc");
2375         if (proc == NULL)
2376                 return (-1);
2377
2378         while ((ent = readdir(proc)) != NULL)
2379         {
2380                 long pid;
2381                 struct procstat ps;
2382                 procstat_entry_t pse;
2383                 char *endptr;
2384
2385                 if (!isdigit ((int) ent->d_name[0]))
2386                         continue;
2387
2388                 pid = strtol (ent->d_name, &endptr, 10);
2389                 if (*endptr != 0) /* value didn't completely parse as a number */
2390                         continue;
2391
2392                 status = ps_read_process (pid, &ps, &state);
2393                 if (status != 0)
2394                 {
2395                         DEBUG("ps_read_process failed: %i", status);
2396                         continue;
2397                 }
2398
2399                 memset (&pse, 0, sizeof (pse));
2400                 pse.id = pid;
2401                 pse.age = 0;
2402
2403                 pse.num_proc   = ps.num_proc;
2404                 pse.num_lwp    = ps.num_lwp;
2405                 pse.vmem_size  = ps.vmem_size;
2406                 pse.vmem_rss   = ps.vmem_rss;
2407                 pse.vmem_data  = ps.vmem_data;
2408                 pse.vmem_code  = ps.vmem_code;
2409                 pse.stack_size = ps.stack_size;
2410
2411                 pse.vmem_minflt = 0;
2412                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2413                 pse.vmem_majflt = 0;
2414                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2415
2416                 pse.cpu_user = 0;
2417                 pse.cpu_user_counter = ps.cpu_user_counter;
2418                 pse.cpu_system = 0;
2419                 pse.cpu_system_counter = ps.cpu_system_counter;
2420
2421                 pse.io_rchar = ps.io_rchar;
2422                 pse.io_wchar = ps.io_wchar;
2423                 pse.io_syscr = ps.io_syscr;
2424                 pse.io_syscw = ps.io_syscw;
2425
2426                 pse.cswitch_vol = -1;
2427                 pse.cswitch_invol = -1;
2428
2429                 switch (state)
2430                 {
2431                         case 'R': running++;  break;
2432                         case 'S': sleeping++; break;
2433                         case 'E': detached++; break;
2434                         case 'Z': zombies++;  break;
2435                         case 'T': stopped++;  break;
2436                         case 'A': daemon++;   break;
2437                         case 'Y': system++;   break;
2438                         case 'O': orphan++;   break;
2439                 }
2440
2441
2442                 ps_list_add (ps.name,
2443                                 ps_get_cmdline (pid, cmdline, sizeof (cmdline)),
2444                                 &pse);
2445         } /* while(readdir) */
2446         closedir (proc);
2447
2448         ps_submit_state ("running",  running);
2449         ps_submit_state ("sleeping", sleeping);
2450         ps_submit_state ("zombies",  zombies);
2451         ps_submit_state ("stopped",  stopped);
2452         ps_submit_state ("detached", detached);
2453         ps_submit_state ("daemon",   daemon);
2454         ps_submit_state ("system",   system);
2455         ps_submit_state ("orphan",   orphan);
2456
2457         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2458                 ps_submit_proc_list (ps_ptr);
2459
2460         read_fork_rate();
2461 #endif /* KERNEL_SOLARIS */
2462
2463         return (0);
2464 } /* int ps_read */
2465
2466 void module_register (void)
2467 {
2468         plugin_register_complex_config ("processes", ps_config);
2469         plugin_register_init ("processes", ps_init);
2470         plugin_register_read ("processes", ps_read);
2471 } /* void module_register */