src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005       Lyonel Vincent
   4  * Copyright (C) 2006-2010  Florian octo Forster
   5  * Copyright (C) 2008       Oleg King
   6  * Copyright (C) 2009       Sebastian Harl
   7  * Copyright (C) 2009       Andrés J. Díaz
   8  * Copyright (C) 2009       Manuel Sanmartin
   9  * Copyright (C) 2010       Clément Stenac
  10  * Copyright (C) 2012       Cosmin Ioiart
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the
  14  * Free Software Foundation; either version 2 of the License, or (at your
  15  * option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with this program; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  25  *
  26  * Authors:
  27  *   Lyonel Vincent <lyonel at ezix.org>
  28  *   Florian octo Forster <octo at collectd.org>
  29  *   Oleg King <king2 at kaluga.ru>
  30  *   Sebastian Harl <sh at tokkee.org>
  31  *   Andrés J. Díaz <ajdiaz at connectical.com>
  32  *   Manuel Sanmartin
  33  *   Clément Stenac <clement.stenac at diwi.org>
  34  *   Cosmin Ioiart <cioiart at gmail.com>
  35  **/
  36
  37 #include "collectd.h"
  38 #include "common.h"
  39 #include "plugin.h"
  40 #include "configfile.h"
  41
  42 /* Include header files for the mach system, if they exist.. */
  43 #if HAVE_THREAD_INFO
  44 #  if HAVE_MACH_MACH_INIT_H
  45 #    include <mach/mach_init.h>
  46 #  endif
  47 #  if HAVE_MACH_HOST_PRIV_H
  48 #    include <mach/host_priv.h>
  49 #  endif
  50 #  if HAVE_MACH_MACH_ERROR_H
  51 #    include <mach/mach_error.h>
  52 #  endif
  53 #  if HAVE_MACH_MACH_HOST_H
  54 #    include <mach/mach_host.h>
  55 #  endif
  56 #  if HAVE_MACH_MACH_PORT_H
  57 #    include <mach/mach_port.h>
  58 #  endif
  59 #  if HAVE_MACH_MACH_TYPES_H
  60 #    include <mach/mach_types.h>
  61 #  endif
  62 #  if HAVE_MACH_MESSAGE_H
  63 #    include <mach/message.h>
  64 #  endif
  65 #  if HAVE_MACH_PROCESSOR_SET_H
  66 #    include <mach/processor_set.h>
  67 #  endif
  68 #  if HAVE_MACH_TASK_H
  69 #    include <mach/task.h>
  70 #  endif
  71 #  if HAVE_MACH_THREAD_ACT_H
  72 #    include <mach/thread_act.h>
  73 #  endif
  74 #  if HAVE_MACH_VM_REGION_H
  75 #    include <mach/vm_region.h>
  76 #  endif
  77 #  if HAVE_MACH_VM_MAP_H
  78 #    include <mach/vm_map.h>
  79 #  endif
  80 #  if HAVE_MACH_VM_PROT_H
  81 #    include <mach/vm_prot.h>
  82 #  endif
  83 #  if HAVE_SYS_SYSCTL_H
  84 #    include <sys/sysctl.h>
  85 #  endif
  86 /* #endif HAVE_THREAD_INFO */
  87
  88 #elif KERNEL_LINUX
  89 #  if HAVE_LINUX_CONFIG_H
  90 #    include <linux/config.h>
  91 #  endif
  92 #  ifndef CONFIG_HZ
  93 #    define CONFIG_HZ 100
  94 #  endif
  95 /* #endif KERNEL_LINUX */
  96
  97 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
  98 #  include <kvm.h>
  99 #  include <sys/param.h>
 100 #  include <sys/sysctl.h>
 101 #  include <sys/user.h>
 102 #  include <sys/proc.h>
 103 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 104
 105 #elif HAVE_PROCINFO_H
 106 #  include <procinfo.h>
 107 #  include <sys/types.h>
 108
 109 #define MAXPROCENTRY 32
 110 #define MAXTHRDENTRY 16
 111 #define MAXARGLN 1024
 112 /* #endif HAVE_PROCINFO_H */
 113
 114 #elif KERNEL_SOLARIS
 115 /* Hack: Avoid #error when building a 32-bit binary with
 116  * _FILE_OFFSET_BITS=64. There is a reason for this #error, as one
 117  * of the structures in <sys/procfs.h> uses an off_t, but that
 118  * isn't relevant to our usage of procfs. */
 119 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
 120 #  define SAVE_FOB_64
 121 #  undef _FILE_OFFSET_BITS
 122 #endif
 123
 124 # include <procfs.h>
 125
 126 #ifdef SAVE_FOB_64
 127 #  define _FILE_OFFSET_BITS 64
 128 #  undef SAVE_FOB_64
 129 #endif
 130
 131 # include <dirent.h>
 132 /* #endif KERNEL_SOLARIS */
 133
 134 #else
 135 # error "No applicable input method."
 136 #endif
 137
 138 #if HAVE_REGEX_H
 139 # include <regex.h>
 140 #endif
 141
 142 #if HAVE_KSTAT_H
 143 # include <kstat.h>
 144 #endif
 145
 146 #ifndef CMDLINE_BUFFER_SIZE
 147 # if defined(ARG_MAX) && (ARG_MAX < 4096)
 148 #  define CMDLINE_BUFFER_SIZE ARG_MAX
 149 # else
 150 #  define CMDLINE_BUFFER_SIZE 4096
 151 # endif
 152 #endif
 153
 154 typedef struct procstat_entry_s
 155 {
 156         unsigned long id;
 157         unsigned long age;
 158
 159         unsigned long num_proc;
 160         unsigned long num_lwp;
 161         unsigned long vmem_size;
 162         unsigned long vmem_rss;
 163         unsigned long vmem_data;
 164         unsigned long vmem_code;
 165         unsigned long stack_size;
 166
 167         unsigned long vmem_minflt;
 168         unsigned long vmem_majflt;
 169         derive_t      vmem_minflt_counter;
 170         derive_t      vmem_majflt_counter;
 171
 172         unsigned long cpu_user;
 173         unsigned long cpu_system;
 174         derive_t      cpu_user_counter;
 175         derive_t      cpu_system_counter;
 176
 177         /* io data */
 178         derive_t io_rchar;
 179         derive_t io_wchar;
 180         derive_t io_syscr;
 181         derive_t io_syscw;
 182
 183         derive_t cswitch_vol;
 184         derive_t cswitch_invol;
 185
 186         struct procstat_entry_s *next;
 187 } procstat_entry_t;
 188
 189 #define PROCSTAT_NAME_LEN 256
 190 typedef struct procstat
 191 {
 192         char          name[PROCSTAT_NAME_LEN];
 193 #if HAVE_REGEX_H
 194         regex_t *re;
 195 #endif
 196
 197         unsigned long num_proc;
 198         unsigned long num_lwp;
 199         unsigned long vmem_size;
 200         unsigned long vmem_rss;
 201         unsigned long vmem_data;
 202         unsigned long vmem_code;
 203         unsigned long stack_size;
 204
 205         derive_t vmem_minflt_counter;
 206         derive_t vmem_majflt_counter;
 207
 208         derive_t cpu_user_counter;
 209         derive_t cpu_system_counter;
 210
 211         /* io data */
 212         derive_t io_rchar;
 213         derive_t io_wchar;
 214         derive_t io_syscr;
 215         derive_t io_syscw;
 216
 217         derive_t cswitch_vol;
 218         derive_t cswitch_invol;
 219
 220         struct procstat   *next;
 221         struct procstat_entry_s *instances;
 222 } procstat_t;
 223
 224 static procstat_t *list_head_g = NULL;
 225
 226 static _Bool report_ctx_switch = 0;
 227
 228 #if HAVE_THREAD_INFO
 229 static mach_port_t port_host_self;
 230 static mach_port_t port_task_self;
 231
 232 static processor_set_name_array_t pset_list;
 233 static mach_msg_type_number_t     pset_list_len;
 234 /* #endif HAVE_THREAD_INFO */
 235
 236 #elif KERNEL_LINUX
 237 static long pagesize_g;
 238 /* #endif KERNEL_LINUX */
 239
 240 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 241 static int pagesize;
 242 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 243
 244 #elif HAVE_PROCINFO_H
 245 static  struct procentry64 procentry[MAXPROCENTRY];
 246 static  struct thrdentry64 thrdentry[MAXTHRDENTRY];
 247 static int pagesize;
 248
 249 #ifndef _AIXVERSION_610
 250 int     getprocs64 (void *procsinfo, int sizproc, void *fdsinfo, int sizfd, pid_t *index, int count);
 251 int     getthrds64( pid_t, void *, int, tid64_t *, int );
 252 #endif
 253 int getargs (void *processBuffer, int bufferLen, char *argsBuffer, int argsLen);
 254 #endif /* HAVE_PROCINFO_H */
 255
 256 /* put name of process from config to list_head_g tree
 257  * list_head_g is a list of 'procstat_t' structs with
 258  * processes names we want to watch */
 259 static void ps_list_register (const char *name, const char *regexp)
 260 {
 261         procstat_t *new;
 262         procstat_t *ptr;
 263         int status;
 264
 265         new = (procstat_t *) malloc (sizeof (procstat_t));
 266         if (new == NULL)
 267         {
 268                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 269                 return;
 270         }
 271         memset (new, 0, sizeof (procstat_t));
 272         sstrncpy (new->name, name, sizeof (new->name));
 273
 274 #if HAVE_REGEX_H
 275         if (regexp != NULL)
 276         {
 277                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 278                 new->re = (regex_t *) malloc (sizeof (regex_t));
 279                 if (new->re == NULL)
 280                 {
 281                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 282                         sfree (new);
 283                         return;
 284                 }
 285
 286                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 287                 if (status != 0)
 288                 {
 289                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 290                         sfree(new->re);
 291                         return;
 292                 }
 293         }
 294 #else
 295         if (regexp != NULL)
 296         {
 297                 ERROR ("processes plugin: ps_list_register: "
 298                                 "Regular expression \"%s\" found in config "
 299                                 "file, but support for regular expressions "
 300                                 "has been disabled at compile time.",
 301                                 regexp);
 302                 sfree (new);
 303                 return;
 304         }
 305 #endif
 306
 307         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 308         {
 309                 if (strcmp (ptr->name, name) == 0)
 310                 {
 311                         WARNING ("processes plugin: You have configured more "
 312                                         "than one `Process' or "
 313                                         "`ProcessMatch' with the same name. "
 314                                         "All but the first setting will be "
 315                                         "ignored.");
 316                         sfree (new->re);
 317                         sfree (new);
 318                         return;
 319                 }
 320
 321                 if (ptr->next == NULL)
 322                         break;
 323         }
 324
 325         if (ptr == NULL)
 326                 list_head_g = new;
 327         else
 328                 ptr->next = new;
 329 } /* void ps_list_register */
 330
 331 /* try to match name against entry, returns 1 if success */
 332 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 333 {
 334 #if HAVE_REGEX_H
 335         if (ps->re != NULL)
 336         {
 337                 int status;
 338                 const char *str;
 339
 340                 str = cmdline;
 341                 if ((str == NULL) || (str[0] == 0))
 342                         str = name;
 343
 344                 assert (str != NULL);
 345
 346                 status = regexec (ps->re, str,
 347                                 /* nmatch = */ 0,
 348                                 /* pmatch = */ NULL,
 349                                 /* eflags = */ 0);
 350                 if (status == 0)
 351                         return (1);
 352         }
 353         else
 354 #endif
 355         if (strcmp (ps->name, name) == 0)
 356                 return (1);
 357
 358         return (0);
 359 } /* int ps_list_match */
 360
 361 /* add process entry to 'instances' of process 'name' (or refresh it) */
 362 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 363 {
 364         procstat_t *ps;
 365         procstat_entry_t *pse;
 366
 367         if (entry->id == 0)
 368                 return;
 369
 370         for (ps = list_head_g; ps != NULL; ps = ps->next)
 371         {
 372                 if ((ps_list_match (name, cmdline, ps)) == 0)
 373                         continue;
 374
 375                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 376                         if ((pse->id == entry->id) || (pse->next == NULL))
 377                                 break;
 378
 379                 if ((pse == NULL) || (pse->id != entry->id))
 380                 {
 381                         procstat_entry_t *new;
 382
 383                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 384                         if (new == NULL)
 385                                 return;
 386                         memset (new, 0, sizeof (procstat_entry_t));
 387                         new->id = entry->id;
 388
 389                         if (pse == NULL)
 390                                 ps->instances = new;
 391                         else
 392                                 pse->next = new;
 393
 394                         pse = new;
 395                 }
 396
 397                 pse->age = 0;
 398                 pse->num_proc   = entry->num_proc;
 399                 pse->num_lwp    = entry->num_lwp;
 400                 pse->vmem_size  = entry->vmem_size;
 401                 pse->vmem_rss   = entry->vmem_rss;
 402                 pse->vmem_data  = entry->vmem_data;
 403                 pse->vmem_code  = entry->vmem_code;
 404                 pse->stack_size = entry->stack_size;
 405                 pse->io_rchar   = entry->io_rchar;
 406                 pse->io_wchar   = entry->io_wchar;
 407                 pse->io_syscr   = entry->io_syscr;
 408                 pse->io_syscw   = entry->io_syscw;
 409                 pse->cswitch_vol   = entry->cswitch_vol;
 410                 pse->cswitch_invol = entry->cswitch_invol;
 411
 412                 ps->num_proc   += pse->num_proc;
 413                 ps->num_lwp    += pse->num_lwp;
 414                 ps->vmem_size  += pse->vmem_size;
 415                 ps->vmem_rss   += pse->vmem_rss;
 416                 ps->vmem_data  += pse->vmem_data;
 417                 ps->vmem_code  += pse->vmem_code;
 418                 ps->stack_size += pse->stack_size;
 419
 420                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 421                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 422                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 423                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 424
 425                 ps->cswitch_vol   += ((pse->cswitch_vol == -1)?0:pse->cswitch_vol);
 426                 ps->cswitch_invol += ((pse->cswitch_invol == -1)?0:pse->cswitch_invol);
 427
 428                 if ((entry->vmem_minflt_counter == 0)
 429                                 && (entry->vmem_majflt_counter == 0))
 430                 {
 431                         pse->vmem_minflt_counter += entry->vmem_minflt;
 432                         pse->vmem_minflt = entry->vmem_minflt;
 433
 434                         pse->vmem_majflt_counter += entry->vmem_majflt;
 435                         pse->vmem_majflt = entry->vmem_majflt;
 436                 }
 437                 else
 438                 {
 439                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 440                         {
 441                                 pse->vmem_minflt = entry->vmem_minflt_counter
 442                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 443                         }
 444                         else
 445                         {
 446                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 447                         }
 448                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 449
 450                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 451                         {
 452                                 pse->vmem_majflt = entry->vmem_majflt_counter
 453                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 454                         }
 455                         else
 456                         {
 457                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 458                         }
 459                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 460                 }
 461
 462                 ps->vmem_minflt_counter += pse->vmem_minflt;
 463                 ps->vmem_majflt_counter += pse->vmem_majflt;
 464
 465                 if ((entry->cpu_user_counter == 0)
 466                                 && (entry->cpu_system_counter == 0))
 467                 {
 468                         pse->cpu_user_counter += entry->cpu_user;
 469                         pse->cpu_user = entry->cpu_user;
 470
 471                         pse->cpu_system_counter += entry->cpu_system;
 472                         pse->cpu_system = entry->cpu_system;
 473                 }
 474                 else
 475                 {
 476                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 477                         {
 478                                 pse->cpu_user = entry->cpu_user_counter
 479                                         + (ULONG_MAX - pse->cpu_user_counter);
 480                         }
 481                         else
 482                         {
 483                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 484                         }
 485                         pse->cpu_user_counter = entry->cpu_user_counter;
 486
 487                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 488                         {
 489                                 pse->cpu_system = entry->cpu_system_counter
 490                                         + (ULONG_MAX - pse->cpu_system_counter);
 491                         }
 492                         else
 493                         {
 494                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 495                         }
 496                         pse->cpu_system_counter = entry->cpu_system_counter;
 497                 }
 498
 499                 ps->cpu_user_counter   += pse->cpu_user;
 500                 ps->cpu_system_counter += pse->cpu_system;
 501         }
 502 }
 503
 504 /* remove old entries from instances of processes in list_head_g */
 505 static void ps_list_reset (void)
 506 {
 507         procstat_t *ps;
 508         procstat_entry_t *pse;
 509         procstat_entry_t *pse_prev;
 510
 511         for (ps = list_head_g; ps != NULL; ps = ps->next)
 512         {
 513                 ps->num_proc    = 0;
 514                 ps->num_lwp     = 0;
 515                 ps->vmem_size   = 0;
 516                 ps->vmem_rss    = 0;
 517                 ps->vmem_data   = 0;
 518                 ps->vmem_code   = 0;
 519                 ps->stack_size  = 0;
 520                 ps->io_rchar = -1;
 521                 ps->io_wchar = -1;
 522                 ps->io_syscr = -1;
 523                 ps->io_syscw = -1;
 524                 ps->cswitch_vol   = -1;
 525                 ps->cswitch_invol = -1;
 526
 527                 pse_prev = NULL;
 528                 pse = ps->instances;
 529                 while (pse != NULL)
 530                 {
 531                         if (pse->age > 10)
 532                         {
 533                                 DEBUG ("Removing this procstat entry cause it's too old: "
 534                                                 "id = %lu; name = %s;",
 535                                                 pse->id, ps->name);
 536
 537                                 if (pse_prev == NULL)
 538                                 {
 539                                         ps->instances = pse->next;
 540                                         free (pse);
 541                                         pse = ps->instances;
 542                                 }
 543                                 else
 544                                 {
 545                                         pse_prev->next = pse->next;
 546                                         free (pse);
 547                                         pse = pse_prev->next;
 548                                 }
 549                         }
 550                         else
 551                         {
 552                                 pse->age++;
 553                                 pse_prev = pse;
 554                                 pse = pse->next;
 555                         }
 556                 } /* while (pse != NULL) */
 557         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 558 }
 559
 560 /* put all pre-defined 'Process' names from config to list_head_g tree */
 561 static int ps_config (oconfig_item_t *ci)
 562 {
 563         int i;
 564
 565         for (i = 0; i < ci->children_num; ++i) {
 566                 oconfig_item_t *c = ci->children + i;
 567
 568                 if (strcasecmp (c->key, "Process") == 0)
 569                 {
 570                         if ((c->values_num != 1)
 571                                         || (OCONFIG_TYPE_STRING != c->values[0].type)) {
 572                                 ERROR ("processes plugin: `Process' expects exactly "
 573                                                 "one string argument (got %i).",
 574                                                 c->values_num);
 575                                 continue;
 576                         }
 577
 578                         if (c->children_num != 0) {
 579                                 WARNING ("processes plugin: the `Process' config option "
 580                                                 "does not expect any child elements -- ignoring "
 581                                                 "content (%i elements) of the <Process '%s'> block.",
 582                                                 c->children_num, c->values[0].value.string);
 583                         }
 584
 585                         ps_list_register (c->values[0].value.string, NULL);
 586                 }
 587                 else if (strcasecmp (c->key, "ProcessMatch") == 0)
 588                 {
 589                         if ((c->values_num != 2)
 590                                         || (OCONFIG_TYPE_STRING != c->values[0].type)
 591                                         || (OCONFIG_TYPE_STRING != c->values[1].type))
 592                         {
 593                                 ERROR ("processes plugin: `ProcessMatch' needs exactly "
 594                                                 "two string arguments (got %i).",
 595                                                 c->values_num);
 596                                 continue;
 597                         }
 598
 599                         if (c->children_num != 0) {
 600                                 WARNING ("processes plugin: the `ProcessMatch' config option "
 601                                                 "does not expect any child elements -- ignoring "
 602                                                 "content (%i elements) of the <ProcessMatch '%s' '%s'> "
 603                                                 "block.", c->children_num, c->values[0].value.string,
 604                                                 c->values[1].value.string);
 605                         }
 606
 607                         ps_list_register (c->values[0].value.string,
 608                                         c->values[1].value.string);
 609                 }
 610                 else if (strcasecmp (c->key, "CollectContextSwitch") == 0)
 611                 {
 612                         cf_util_get_boolean (c, &report_ctx_switch);
 613                 }
 614                 else
 615                 {
 616                         ERROR ("processes plugin: The `%s' configuration option is not "
 617                                         "understood and will be ignored.", c->key);
 618                         continue;
 619                 }
 620         }
 621
 622         return (0);
 623 }
 624
 625 static int ps_init (void)
 626 {
 627 #if HAVE_THREAD_INFO
 628         kern_return_t status;
 629
 630         port_host_self = mach_host_self ();
 631         port_task_self = mach_task_self ();
 632
 633         if (pset_list != NULL)
 634         {
 635                 vm_deallocate (port_task_self,
 636                                 (vm_address_t) pset_list,
 637                                 pset_list_len * sizeof (processor_set_t));
 638                 pset_list = NULL;
 639                 pset_list_len = 0;
 640         }
 641
 642         if ((status = host_processor_sets (port_host_self,
 643                                         &pset_list,
 644                                         &pset_list_len)) != KERN_SUCCESS)
 645         {
 646                 ERROR ("host_processor_sets failed: %s\n",
 647                                 mach_error_string (status));
 648                 pset_list = NULL;
 649                 pset_list_len = 0;
 650                 return (-1);
 651         }
 652 /* #endif HAVE_THREAD_INFO */
 653
 654 #elif KERNEL_LINUX
 655         pagesize_g = sysconf(_SC_PAGESIZE);
 656         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 657                         pagesize_g, CONFIG_HZ);
 658 /* #endif KERNEL_LINUX */
 659
 660 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 661         pagesize = getpagesize();
 662 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 663
 664 #elif HAVE_PROCINFO_H
 665         pagesize = getpagesize();
 666 #endif /* HAVE_PROCINFO_H */
 667
 668         return (0);
 669 } /* int ps_init */
 670
 671 /* submit global state (e.g.: qty of zombies, running, etc..) */
 672 static void ps_submit_state (const char *state, double value)
 673 {
 674         value_t values[1];
 675         value_list_t vl = VALUE_LIST_INIT;
 676
 677         values[0].gauge = value;
 678
 679         vl.values = values;
 680         vl.values_len = 1;
 681         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 682         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 683         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 684         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 685         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 686
 687         plugin_dispatch_values (&vl);
 688 }
 689
 690 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 691 static void ps_submit_proc_list (procstat_t *ps)
 692 {
 693         value_t values[2];
 694         value_list_t vl = VALUE_LIST_INIT;
 695
 696         vl.values = values;
 697         vl.values_len = 2;
 698         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 699         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 700         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 701
 702         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 703         vl.values[0].gauge = ps->vmem_size;
 704         vl.values_len = 1;
 705         plugin_dispatch_values (&vl);
 706
 707         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 708         vl.values[0].gauge = ps->vmem_rss;
 709         vl.values_len = 1;
 710         plugin_dispatch_values (&vl);
 711
 712         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 713         vl.values[0].gauge = ps->vmem_data;
 714         vl.values_len = 1;
 715         plugin_dispatch_values (&vl);
 716
 717         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 718         vl.values[0].gauge = ps->vmem_code;
 719         vl.values_len = 1;
 720         plugin_dispatch_values (&vl);
 721
 722         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 723         vl.values[0].gauge = ps->stack_size;
 724         vl.values_len = 1;
 725         plugin_dispatch_values (&vl);
 726
 727         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 728         vl.values[0].derive = ps->cpu_user_counter;
 729         vl.values[1].derive = ps->cpu_system_counter;
 730         vl.values_len = 2;
 731         plugin_dispatch_values (&vl);
 732
 733         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 734         vl.values[0].gauge = ps->num_proc;
 735         vl.values[1].gauge = ps->num_lwp;
 736         vl.values_len = 2;
 737         plugin_dispatch_values (&vl);
 738
 739         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 740         vl.values[0].derive = ps->vmem_minflt_counter;
 741         vl.values[1].derive = ps->vmem_majflt_counter;
 742         vl.values_len = 2;
 743         plugin_dispatch_values (&vl);
 744
 745         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 746         {
 747                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 748                 vl.values[0].derive = ps->io_rchar;
 749                 vl.values[1].derive = ps->io_wchar;
 750                 vl.values_len = 2;
 751                 plugin_dispatch_values (&vl);
 752         }
 753
 754         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 755         {
 756                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 757                 vl.values[0].derive = ps->io_syscr;
 758                 vl.values[1].derive = ps->io_syscw;
 759                 vl.values_len = 2;
 760                 plugin_dispatch_values (&vl);
 761         }
 762
 763         if ( report_ctx_switch )
 764         {
 765                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 766                 sstrncpy (vl.type_instance, "voluntary", sizeof (vl.type_instance));
 767                 vl.values[0].derive = ps->cswitch_vol;
 768                 vl.values_len = 1;
 769                 plugin_dispatch_values (&vl);
 770
 771                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 772                 sstrncpy (vl.type_instance, "involuntary", sizeof (vl.type_instance));
 773                 vl.values[0].derive = ps->cswitch_invol;
 774                 vl.values_len = 1;
 775                 plugin_dispatch_values (&vl);
 776         }
 777
 778         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 779                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 780                         "vmem_code = %lu; "
 781                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 782                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 783                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 784                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 785                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 786                         ps->name, ps->num_proc, ps->num_lwp,
 787                         ps->vmem_size, ps->vmem_rss,
 788                         ps->vmem_data, ps->vmem_code,
 789                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 790                         ps->cpu_user_counter, ps->cpu_system_counter,
 791                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 792                         ps->cswitch_vol, ps->cswitch_invol);
 793 } /* void ps_submit_proc_list */
 794
 795 #if KERNEL_LINUX || KERNEL_SOLARIS
 796 static void ps_submit_fork_rate (derive_t value)
 797 {
 798         value_t values[1];
 799         value_list_t vl = VALUE_LIST_INIT;
 800
 801         values[0].derive = value;
 802
 803         vl.values = values;
 804         vl.values_len = 1;
 805         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 806         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 807         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 808         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 809         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 810
 811         plugin_dispatch_values(&vl);
 812 }
 813 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 814
 815 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 816 #if KERNEL_LINUX
 817 static procstat_t *ps_read_tasks_status (int pid, procstat_t *ps)
 818 {
 819         char           dirname[64];
 820         DIR           *dh;
 821         char           filename[64];
 822         FILE          *fh;
 823         struct dirent *ent;
 824         derive_t cswitch_vol = 0;
 825         derive_t cswitch_invol = 0;
 826         char buffer[1024];
 827         char *fields[8];
 828         int numfields;
 829
 830         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 831
 832         if ((dh = opendir (dirname)) == NULL)
 833         {
 834                 DEBUG ("Failed to open directory `%s'", dirname);
 835                 return (NULL);
 836         }
 837
 838         while ((ent = readdir (dh)) != NULL)
 839         {
 840                 char *tpid;
 841
 842                 if (!isdigit ((int) ent->d_name[0]))
 843                         continue;
 844
 845                 tpid = ent->d_name;
 846
 847                 ssnprintf (filename, sizeof (filename), "/proc/%i/task/%s/status", pid, tpid);
 848                 if ((fh = fopen (filename, "r")) == NULL)
 849                 {
 850                         DEBUG ("Failed to open file `%s'", filename);
 851                         continue;
 852                 }
 853
 854                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 855                 {
 856                         derive_t tmp;
 857                         char *endptr;
 858
 859                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 860                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 861                                 continue;
 862
 863                         numfields = strsplit (buffer, fields,
 864                                 STATIC_ARRAY_SIZE (fields));
 865
 866                         if (numfields < 2)
 867                                 continue;
 868
 869                         errno = 0;
 870                         endptr = NULL;
 871                         tmp = (derive_t) strtoll (fields[1], &endptr, /* base = */ 10);
 872                         if ((errno == 0) && (endptr != fields[1]))
 873                         {
 874                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 875                                 {
 876                                         cswitch_vol += tmp;
 877                                 }
 878                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 879                                 {
 880                                         cswitch_invol += tmp;
 881                                 }
 882                         }
 883                 } /* while (fgets) */
 884
 885                 if (fclose (fh))
 886                 {
 887                         char errbuf[1024];
 888                                 WARNING ("processes: fclose: %s",
 889                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 890                 }
 891         }
 892         closedir (dh);
 893
 894         ps->cswitch_vol = cswitch_vol;
 895         ps->cswitch_invol = cswitch_invol;
 896
 897         return (ps);
 898 } /* int *ps_read_tasks_status */
 899
 900 /* Read data from /proc/pid/status */
 901 static procstat_t *ps_read_status (int pid, procstat_t *ps)
 902 {
 903         FILE *fh;
 904         char buffer[1024];
 905         char filename[64];
 906         unsigned long lib = 0;
 907         unsigned long exe = 0;
 908         unsigned long data = 0;
 909         unsigned long threads = 0;
 910         char *fields[8];
 911         int numfields;
 912
 913         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 914         if ((fh = fopen (filename, "r")) == NULL)
 915                 return (NULL);
 916
 917         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 918         {
 919                 unsigned long tmp;
 920                 char *endptr;
 921
 922                 if (strncmp (buffer, "Vm", 2) != 0
 923                                 && strncmp (buffer, "Threads", 7) != 0)
 924                         continue;
 925
 926                 numfields = strsplit (buffer, fields,
 927                                 STATIC_ARRAY_SIZE (fields));
 928
 929                 if (numfields < 2)
 930                         continue;
 931
 932                 errno = 0;
 933                 endptr = NULL;
 934                 tmp = strtoul (fields[1], &endptr, /* base = */ 10);
 935                 if ((errno == 0) && (endptr != fields[1]))
 936                 {
 937                         if (strncmp (buffer, "VmData", 6) == 0)
 938                         {
 939                                 data = tmp;
 940                         }
 941                         else if (strncmp (buffer, "VmLib", 5) == 0)
 942                         {
 943                                 lib = tmp;
 944                         }
 945                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 946                         {
 947                                 exe = tmp;
 948                         }
 949                         else if  (strncmp(buffer, "Threads", 7) == 0)
 950                         {
 951                                 threads = tmp;
 952                         }
 953                 }
 954         } /* while (fgets) */
 955
 956         if (fclose (fh))
 957         {
 958                 char errbuf[1024];
 959                 WARNING ("processes: fclose: %s",
 960                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 961         }
 962
 963         ps->vmem_data = data * 1024;
 964         ps->vmem_code = (exe + lib) * 1024;
 965         if (threads != 0)
 966                 ps->num_lwp = threads;
 967
 968         return (ps);
 969 } /* procstat_t *ps_read_vmem */
 970
 971 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 972 {
 973         FILE *fh;
 974         char buffer[1024];
 975         char filename[64];
 976
 977         char *fields[8];
 978         int numfields;
 979
 980         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 981         if ((fh = fopen (filename, "r")) == NULL)
 982                 return (NULL);
 983
 984         while (fgets (buffer, sizeof (buffer), fh) != NULL)
 985         {
 986                 derive_t *val = NULL;
 987                 long long tmp;
 988                 char *endptr;
 989
 990                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 991                         val = &(ps->io_rchar);
 992                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 993                         val = &(ps->io_wchar);
 994                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 995                         val = &(ps->io_syscr);
 996                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 997                         val = &(ps->io_syscw);
 998                 else
 999                         continue;
1000
1001                 numfields = strsplit (buffer, fields,
1002                                 STATIC_ARRAY_SIZE (fields));
1003
1004                 if (numfields < 2)
1005                         continue;
1006
1007                 errno = 0;
1008                 endptr = NULL;
1009                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
1010                 if ((errno != 0) || (endptr == fields[1]))
1011                         *val = -1;
1012                 else
1013                         *val = (derive_t) tmp;
1014         } /* while (fgets) */
1015
1016         if (fclose (fh))
1017         {
1018                 char errbuf[1024];
1019                 WARNING ("processes: fclose: %s",
1020                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1021         }
1022
1023         return (ps);
1024 } /* procstat_t *ps_read_io */
1025
1026 int ps_read_process (int pid, procstat_t *ps, char *state)
1027 {
1028         char  filename[64];
1029         char  buffer[1024];
1030
1031         char *fields[64];
1032         char  fields_len;
1033
1034         size_t buffer_len;
1035
1036         char  *buffer_ptr;
1037         size_t name_start_pos;
1038         size_t name_end_pos;
1039         size_t name_len;
1040
1041         derive_t cpu_user_counter;
1042         derive_t cpu_system_counter;
1043         long long unsigned vmem_size;
1044         long long unsigned vmem_rss;
1045         long long unsigned stack_size;
1046
1047         ssize_t status;
1048
1049         memset (ps, 0, sizeof (procstat_t));
1050
1051         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
1052
1053         status = read_file_contents (filename, buffer, sizeof(buffer) - 1);
1054         if (status <= 0)
1055                 return (-1);
1056         buffer_len = (size_t) status;
1057         buffer[buffer_len] = 0;
1058
1059         /* The name of the process is enclosed in parens. Since the name can
1060          * contain parens itself, spaces, numbers and pretty much everything
1061          * else, use these to determine the process name. We don't use
1062          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1063          * otherwise be required to determine name_len. */
1064         name_start_pos = 0;
1065         while ((buffer[name_start_pos] != '(')
1066                         && (name_start_pos < buffer_len))
1067                 name_start_pos++;
1068
1069         name_end_pos = buffer_len;
1070         while ((buffer[name_end_pos] != ')')
1071                         && (name_end_pos > 0))
1072                 name_end_pos--;
1073
1074         /* Either '(' or ')' is not found or they are in the wrong order.
1075          * Anyway, something weird that shouldn't happen ever. */
1076         if (name_start_pos >= name_end_pos)
1077         {
1078                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1079                                 name_start_pos, name_end_pos);
1080                 return (-1);
1081         }
1082
1083         name_len = (name_end_pos - name_start_pos) - 1;
1084         if (name_len >= sizeof (ps->name))
1085                 name_len = sizeof (ps->name) - 1;
1086
1087         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1088
1089         if ((buffer_len - name_end_pos) < 2)
1090                 return (-1);
1091         buffer_ptr = &buffer[name_end_pos + 2];
1092
1093         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1094         if (fields_len < 22)
1095         {
1096                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
1097                                 " `%s' has only %i fields..",
1098                                 (int) pid, filename, fields_len);
1099                 return (-1);
1100         }
1101
1102         *state = fields[0][0];
1103
1104         if (*state == 'Z')
1105         {
1106                 ps->num_lwp  = 0;
1107                 ps->num_proc = 0;
1108         }
1109         else
1110         {
1111                 ps->num_lwp = strtoul (fields[17], /* endptr = */ NULL, /* base = */ 10);
1112                 if ((ps_read_status(pid, ps)) == NULL)
1113                 {
1114                         /* No VMem data */
1115                         ps->vmem_data = -1;
1116                         ps->vmem_code = -1;
1117                         DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
1118                 }
1119                 if (ps->num_lwp <= 0)
1120                         ps->num_lwp = 1;
1121                 ps->num_proc = 1;
1122         }
1123
1124         /* Leave the rest at zero if this is only a zombi */
1125         if (ps->num_proc == 0)
1126         {
1127                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
1128                                 "name = %s;", pid, ps->name);
1129                 return (0);
1130         }
1131
1132         cpu_user_counter   = atoll (fields[11]);
1133         cpu_system_counter = atoll (fields[12]);
1134         vmem_size          = atoll (fields[20]);
1135         vmem_rss           = atoll (fields[21]);
1136         ps->vmem_minflt_counter = atol (fields[7]);
1137         ps->vmem_majflt_counter = atol (fields[9]);
1138
1139         {
1140                 unsigned long long stack_start = atoll (fields[25]);
1141                 unsigned long long stack_ptr   = atoll (fields[26]);
1142
1143                 stack_size = (stack_start > stack_ptr)
1144                         ? stack_start - stack_ptr
1145                         : stack_ptr - stack_start;
1146         }
1147
1148         /* Convert jiffies to useconds */
1149         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1150         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1151         vmem_rss = vmem_rss * pagesize_g;
1152
1153         ps->cpu_user_counter = cpu_user_counter;
1154         ps->cpu_system_counter = cpu_system_counter;
1155         ps->vmem_size = (unsigned long) vmem_size;
1156         ps->vmem_rss = (unsigned long) vmem_rss;
1157         ps->stack_size = (unsigned long) stack_size;
1158
1159         if ( (ps_read_io (pid, ps)) == NULL)
1160         {
1161                 /* no io data */
1162                 ps->io_rchar = -1;
1163                 ps->io_wchar = -1;
1164                 ps->io_syscr = -1;
1165                 ps->io_syscw = -1;
1166
1167                 DEBUG("ps_read_process: not get io data for pid %i",pid);
1168         }
1169
1170         if ( report_ctx_switch )
1171         {
1172                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1173                 {
1174                         ps->cswitch_vol = -1;
1175                         ps->cswitch_invol = -1;
1176
1177                         DEBUG("ps_read_tasks_status: not get context "
1178                                         "switch data for pid %i",pid);
1179                 }
1180         }
1181
1182         /* success */
1183         return (0);
1184 } /* int ps_read_process (...) */
1185
1186 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
1187 {
1188         char  *buf_ptr;
1189         size_t len;
1190
1191         char file[PATH_MAX];
1192         int  fd;
1193
1194         size_t n;
1195
1196         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1197                 return NULL;
1198
1199         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1200                         (unsigned int) pid);
1201
1202         errno = 0;
1203         fd = open (file, O_RDONLY);
1204         if (fd < 0) {
1205                 char errbuf[4096];
1206                 /* ENOENT means the process exited while we were handling it.
1207                  * Don't complain about this, it only fills the logs. */
1208                 if (errno != ENOENT)
1209                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1210                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1211                 return NULL;
1212         }
1213
1214         buf_ptr = buf;
1215         len     = buf_len;
1216
1217         n = 0;
1218
1219         while (42) {
1220                 ssize_t status;
1221
1222                 status = read (fd, (void *)buf_ptr, len);
1223
1224                 if (status < 0) {
1225                         char errbuf[1024];
1226
1227                         if ((EAGAIN == errno) || (EINTR == errno))
1228                                 continue;
1229
1230                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1231                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1232                         close (fd);
1233                         return NULL;
1234                 }
1235
1236                 n += status;
1237
1238                 if (status == 0)
1239                         break;
1240
1241                 buf_ptr += status;
1242                 len     -= status;
1243
1244                 if (len <= 0)
1245                         break;
1246         }
1247
1248         close (fd);
1249
1250         if (0 == n) {
1251                 /* cmdline not available; e.g. kernel thread, zombie */
1252                 if (NULL == name)
1253                         return NULL;
1254
1255                 ssnprintf (buf, buf_len, "[%s]", name);
1256                 return buf;
1257         }
1258
1259         assert (n <= buf_len);
1260
1261         if (n == buf_len)
1262                 --n;
1263         buf[n] = '\0';
1264
1265         --n;
1266         /* remove trailing whitespace */
1267         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1268                 buf[n] = '\0';
1269                 --n;
1270         }
1271
1272         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1273         while (n > 0) {
1274                 if ('\0' == buf[n])
1275                         buf[n] = ' ';
1276                 --n;
1277         }
1278         return buf;
1279 } /* char *ps_get_cmdline (...) */
1280
1281 static int read_fork_rate ()
1282 {
1283         FILE *proc_stat;
1284         char buffer[1024];
1285         value_t value;
1286         _Bool value_valid = 0;
1287
1288         proc_stat = fopen ("/proc/stat", "r");
1289         if (proc_stat == NULL)
1290         {
1291                 char errbuf[1024];
1292                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1293                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1294                 return (-1);
1295         }
1296
1297         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1298         {
1299                 int status;
1300                 char *fields[3];
1301                 int fields_num;
1302
1303                 fields_num = strsplit (buffer, fields,
1304                                 STATIC_ARRAY_SIZE (fields));
1305                 if (fields_num != 2)
1306                         continue;
1307
1308                 if (strcmp ("processes", fields[0]) != 0)
1309                         continue;
1310
1311                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1312                 if (status == 0)
1313                         value_valid = 1;
1314
1315                 break;
1316         }
1317         fclose(proc_stat);
1318
1319         if (!value_valid)
1320                 return (-1);
1321
1322         ps_submit_fork_rate (value.derive);
1323         return (0);
1324 }
1325 #endif /*KERNEL_LINUX */
1326
1327 #if KERNEL_SOLARIS
1328 static const char *ps_get_cmdline (long pid, /* {{{ */
1329                 char *buffer, size_t buffer_size)
1330 {
1331         char path[PATH_MAX];
1332         psinfo_t info;
1333         ssize_t status;
1334
1335         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1336
1337         status = read_file_contents (path, (void *) &info, sizeof (info));
1338         if ((status < 0) || (((size_t) status) != sizeof (info)))
1339         {
1340                 ERROR ("processes plugin: Unexpected return value "
1341                                 "while reading \"%s\": "
1342                                 "Returned %zd but expected %zu.",
1343                                 path, status, buffer_size);
1344                 return (NULL);
1345         }
1346
1347         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1348         sstrncpy (buffer, info.pr_psargs, buffer_size);
1349
1350         return (buffer);
1351 } /* }}} int ps_get_cmdline */
1352
1353 /*
1354  * Reads process information on the Solaris OS. The information comes mainly from
1355  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1356  * The values for input and ouput chars are calculated "by hand"
1357  * Added a few "solaris" specific process states as well
1358  */
1359 static int ps_read_process(long pid, procstat_t *ps, char *state)
1360 {
1361         char filename[64];
1362         char f_psinfo[64], f_usage[64];
1363         char *buffer;
1364
1365         pstatus_t *myStatus;
1366         psinfo_t *myInfo;
1367         prusage_t *myUsage;
1368
1369         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1370         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1371         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1372
1373
1374         buffer = malloc(sizeof (pstatus_t));
1375         memset(buffer, 0, sizeof (pstatus_t));
1376         read_file_contents(filename, buffer, sizeof (pstatus_t));
1377         myStatus = (pstatus_t *) buffer;
1378
1379         buffer = malloc(sizeof (psinfo_t));
1380         memset(buffer, 0, sizeof(psinfo_t));
1381         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1382         myInfo = (psinfo_t *) buffer;
1383
1384         buffer = malloc(sizeof (prusage_t));
1385         memset(buffer, 0, sizeof(prusage_t));
1386         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1387         myUsage = (prusage_t *) buffer;
1388
1389         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1390         ps->num_lwp = myStatus->pr_nlwp;
1391         if (myInfo->pr_wstat != 0) {
1392                 ps->num_proc = 0;
1393                 ps->num_lwp = 0;
1394                 *state = (char) 'Z';
1395                 return (0);
1396         } else {
1397                 ps->num_proc = 1;
1398                 ps->num_lwp = myInfo->pr_nlwp;
1399         }
1400
1401         /*
1402          * Convert system time and user time from nanoseconds to microseconds
1403          * for compatibility with the linux module
1404          */
1405         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1406         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1407
1408         /*
1409          * Convert rssize from KB to bytes to be consistent w/ the linux module
1410          */
1411         ps->vmem_rss = myInfo->pr_rssize * 1024;
1412         ps->vmem_size = myInfo->pr_size * 1024;
1413         ps->vmem_minflt_counter = myUsage->pr_minf;
1414         ps->vmem_majflt_counter = myUsage->pr_majf;
1415
1416         /*
1417          * TODO: Data and code segment calculations for Solaris
1418          */
1419
1420         ps->vmem_data = -1;
1421         ps->vmem_code = -1;
1422         ps->stack_size = myStatus->pr_stksize;
1423
1424         /*
1425          * Calculating input/ouput chars
1426          * Formula used is total chars / total blocks => chars/block
1427          * then convert input/output blocks to chars
1428          */
1429         ulong_t tot_chars = myUsage->pr_ioch;
1430         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1431         ulong_t chars_per_block = 1;
1432         if (tot_blocks != 0)
1433                 chars_per_block = tot_chars / tot_blocks;
1434         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1435         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1436         ps->io_syscr = myUsage->pr_sysc;
1437         ps->io_syscw = myUsage->pr_sysc;
1438
1439         /*
1440          * TODO: context switch counters for Solaris
1441    */
1442         ps->cswitch_vol   = -1;
1443         ps->cswitch_invol = -1;
1444
1445
1446         /*
1447          * TODO: Find way of setting BLOCKED and PAGING status
1448          */
1449
1450         *state = (char) 'R';
1451         if (myStatus->pr_flags & PR_ASLEEP)
1452                 *state = (char) 'S';
1453         else if (myStatus->pr_flags & PR_STOPPED)
1454                 *state = (char) 'T';
1455         else if (myStatus->pr_flags & PR_DETACH)
1456                 *state = (char) 'E';
1457         else if (myStatus->pr_flags & PR_DAEMON)
1458                 *state = (char) 'A';
1459         else if (myStatus->pr_flags & PR_ISSYS)
1460                 *state = (char) 'Y';
1461         else if (myStatus->pr_flags & PR_ORPHAN)
1462                 *state = (char) 'O';
1463
1464         sfree(myStatus);
1465         sfree(myInfo);
1466         sfree(myUsage);
1467
1468         return (0);
1469 }
1470
1471 /*
1472  * Reads the number of threads created since the last reboot. On Solaris these
1473  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1474  * The result is the sum for all the threads created on each cpu
1475  */
1476 static int read_fork_rate()
1477 {
1478         extern kstat_ctl_t *kc;
1479         kstat_t *ksp_chain = NULL;
1480         derive_t result = 0;
1481
1482         if (kc == NULL)
1483                 return (-1);
1484
1485         for (ksp_chain = kc->kc_chain;
1486                         ksp_chain != NULL;
1487                         ksp_chain = ksp_chain->ks_next)
1488         {
1489                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1490                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1491                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1492                 {
1493                         long long tmp;
1494
1495                         kstat_read (kc, ksp_chain, NULL);
1496
1497                         tmp = get_kstat_value(ksp_chain, "nthreads");
1498                         if (tmp != -1LL)
1499                                 result += tmp;
1500                 }
1501         }
1502
1503         ps_submit_fork_rate (result);
1504         return (0);
1505 }
1506 #endif /* KERNEL_SOLARIS */
1507
1508 #if HAVE_THREAD_INFO
1509 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1510 {
1511         int mib[4];
1512
1513         struct kinfo_proc kp;
1514         size_t            kp_size;
1515
1516         mib[0] = CTL_KERN;
1517         mib[1] = KERN_PROC;
1518         mib[2] = KERN_PROC_PID;
1519
1520         if (pid_for_task (t, pid) != KERN_SUCCESS)
1521                 return (-1);
1522         mib[3] = *pid;
1523
1524         kp_size = sizeof (kp);
1525         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1526                 return (-1);
1527
1528         if (name_max_len > (MAXCOMLEN + 1))
1529                 name_max_len = MAXCOMLEN + 1;
1530
1531         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1532         name[name_max_len - 1] = '\0';
1533
1534         DEBUG ("pid = %i; name = %s;", *pid, name);
1535
1536         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1537          * `top' does it, because it is a lot of work and only used when
1538          * debugging. -octo */
1539
1540         return (0);
1541 }
1542 #endif /* HAVE_THREAD_INFO */
1543 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1544
1545 /* do actual readings from kernel */
1546 static int ps_read (void)
1547 {
1548 #if HAVE_THREAD_INFO
1549         kern_return_t            status;
1550
1551         int                      pset;
1552         processor_set_t          port_pset_priv;
1553
1554         int                      task;
1555         task_array_t             task_list;
1556         mach_msg_type_number_t   task_list_len;
1557
1558         int                      task_pid;
1559         char                     task_name[MAXCOMLEN + 1];
1560
1561         int                      thread;
1562         thread_act_array_t       thread_list;
1563         mach_msg_type_number_t   thread_list_len;
1564         thread_basic_info_data_t thread_data;
1565         mach_msg_type_number_t   thread_data_len;
1566
1567         int running  = 0;
1568         int sleeping = 0;
1569         int zombies  = 0;
1570         int stopped  = 0;
1571         int blocked  = 0;
1572
1573         procstat_t *ps;
1574         procstat_entry_t pse;
1575
1576         ps_list_reset ();
1577
1578         /*
1579          * The Mach-concept is a little different from the traditional UNIX
1580          * concept: All the work is done in threads. Threads are contained in
1581          * `tasks'. Therefore, `task status' doesn't make much sense, since
1582          * it's actually a `thread status'.
1583          * Tasks are assigned to sets of processors, so that's where you go to
1584          * get a list.
1585          */
1586         for (pset = 0; pset < pset_list_len; pset++)
1587         {
1588                 if ((status = host_processor_set_priv (port_host_self,
1589                                                 pset_list[pset],
1590                                                 &port_pset_priv)) != KERN_SUCCESS)
1591                 {
1592                         ERROR ("host_processor_set_priv failed: %s\n",
1593                                         mach_error_string (status));
1594                         continue;
1595                 }
1596
1597                 if ((status = processor_set_tasks (port_pset_priv,
1598                                                 &task_list,
1599                                                 &task_list_len)) != KERN_SUCCESS)
1600                 {
1601                         ERROR ("processor_set_tasks failed: %s\n",
1602                                         mach_error_string (status));
1603                         mach_port_deallocate (port_task_self, port_pset_priv);
1604                         continue;
1605                 }
1606
1607                 for (task = 0; task < task_list_len; task++)
1608                 {
1609                         ps = NULL;
1610                         if (mach_get_task_name (task_list[task],
1611                                                 &task_pid,
1612                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1613                         {
1614                                 /* search for at least one match */
1615                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1616                                         /* FIXME: cmdline should be here instead of NULL */
1617                                         if (ps_list_match (task_name, NULL, ps) == 1)
1618                                                 break;
1619                         }
1620
1621                         /* Collect more detailed statistics for this process */
1622                         if (ps != NULL)
1623                         {
1624                                 task_basic_info_data_t        task_basic_info;
1625                                 mach_msg_type_number_t        task_basic_info_len;
1626                                 task_events_info_data_t       task_events_info;
1627                                 mach_msg_type_number_t        task_events_info_len;
1628                                 task_absolutetime_info_data_t task_absolutetime_info;
1629                                 mach_msg_type_number_t        task_absolutetime_info_len;
1630
1631                                 memset (&pse, '\0', sizeof (pse));
1632                                 pse.id = task_pid;
1633
1634                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1635                                 status = task_info (task_list[task],
1636                                                 TASK_BASIC_INFO,
1637                                                 (task_info_t) &task_basic_info,
1638                                                 &task_basic_info_len);
1639                                 if (status != KERN_SUCCESS)
1640                                 {
1641                                         ERROR ("task_info failed: %s",
1642                                                         mach_error_string (status));
1643                                         continue; /* with next thread_list */
1644                                 }
1645
1646                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1647                                 status = task_info (task_list[task],
1648                                                 TASK_EVENTS_INFO,
1649                                                 (task_info_t) &task_events_info,
1650                                                 &task_events_info_len);
1651                                 if (status != KERN_SUCCESS)
1652                                 {
1653                                         ERROR ("task_info failed: %s",
1654                                                         mach_error_string (status));
1655                                         continue; /* with next thread_list */
1656                                 }
1657
1658                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1659                                 status = task_info (task_list[task],
1660                                                 TASK_ABSOLUTETIME_INFO,
1661                                                 (task_info_t) &task_absolutetime_info,
1662                                                 &task_absolutetime_info_len);
1663                                 if (status != KERN_SUCCESS)
1664                                 {
1665                                         ERROR ("task_info failed: %s",
1666                                                         mach_error_string (status));
1667                                         continue; /* with next thread_list */
1668                                 }
1669
1670                                 pse.num_proc++;
1671                                 pse.vmem_size = task_basic_info.virtual_size;
1672                                 pse.vmem_rss = task_basic_info.resident_size;
1673                                 /* Does not seem to be easily exposed */
1674                                 pse.vmem_data = 0;
1675                                 pse.vmem_code = 0;
1676
1677                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1678                                 pse.vmem_majflt_counter = task_events_info.faults;
1679
1680                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1681                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1682
1683                                 /* context switch counters not implemented */
1684                                 pse.cswitch_vol   = -1;
1685                                 pse.cswitch_invol = -1;
1686                         }
1687
1688                         status = task_threads (task_list[task], &thread_list,
1689                                         &thread_list_len);
1690                         if (status != KERN_SUCCESS)
1691                         {
1692                                 /* Apple's `top' treats this case a zombie. It
1693                                  * makes sense to some extend: A `zombie'
1694                                  * thread is nonsense, since the task/process
1695                                  * is dead. */
1696                                 zombies++;
1697                                 DEBUG ("task_threads failed: %s",
1698                                                 mach_error_string (status));
1699                                 if (task_list[task] != port_task_self)
1700                                         mach_port_deallocate (port_task_self,
1701                                                         task_list[task]);
1702                                 continue; /* with next task_list */
1703                         }
1704
1705                         for (thread = 0; thread < thread_list_len; thread++)
1706                         {
1707                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1708                                 status = thread_info (thread_list[thread],
1709                                                 THREAD_BASIC_INFO,
1710                                                 (thread_info_t) &thread_data,
1711                                                 &thread_data_len);
1712                                 if (status != KERN_SUCCESS)
1713                                 {
1714                                         ERROR ("thread_info failed: %s",
1715                                                         mach_error_string (status));
1716                                         if (task_list[task] != port_task_self)
1717                                                 mach_port_deallocate (port_task_self,
1718                                                                 thread_list[thread]);
1719                                         continue; /* with next thread_list */
1720                                 }
1721
1722                                 if (ps != NULL)
1723                                         pse.num_lwp++;
1724
1725                                 switch (thread_data.run_state)
1726                                 {
1727                                         case TH_STATE_RUNNING:
1728                                                 running++;
1729                                                 break;
1730                                         case TH_STATE_STOPPED:
1731                                         /* What exactly is `halted'? */
1732                                         case TH_STATE_HALTED:
1733                                                 stopped++;
1734                                                 break;
1735                                         case TH_STATE_WAITING:
1736                                                 sleeping++;
1737                                                 break;
1738                                         case TH_STATE_UNINTERRUPTIBLE:
1739                                                 blocked++;
1740                                                 break;
1741                                         /* There is no `zombie' case here,
1742                                          * since there are no zombie-threads.
1743                                          * There's only zombie tasks, which are
1744                                          * handled above. */
1745                                         default:
1746                                                 WARNING ("Unknown thread status: %i",
1747                                                                 thread_data.run_state);
1748                                                 break;
1749                                 } /* switch (thread_data.run_state) */
1750
1751                                 if (task_list[task] != port_task_self)
1752                                 {
1753                                         status = mach_port_deallocate (port_task_self,
1754                                                         thread_list[thread]);
1755                                         if (status != KERN_SUCCESS)
1756                                                 ERROR ("mach_port_deallocate failed: %s",
1757                                                                 mach_error_string (status));
1758                                 }
1759                         } /* for (thread_list) */
1760
1761                         if ((status = vm_deallocate (port_task_self,
1762                                                         (vm_address_t) thread_list,
1763                                                         thread_list_len * sizeof (thread_act_t)))
1764                                         != KERN_SUCCESS)
1765                         {
1766                                 ERROR ("vm_deallocate failed: %s",
1767                                                 mach_error_string (status));
1768                         }
1769                         thread_list = NULL;
1770                         thread_list_len = 0;
1771
1772                         /* Only deallocate the task port, if it isn't our own.
1773                          * Don't know what would happen in that case, but this
1774                          * is what Apple's top does.. ;) */
1775                         if (task_list[task] != port_task_self)
1776                         {
1777                                 status = mach_port_deallocate (port_task_self,
1778                                                 task_list[task]);
1779                                 if (status != KERN_SUCCESS)
1780                                         ERROR ("mach_port_deallocate failed: %s",
1781                                                         mach_error_string (status));
1782                         }
1783
1784                         if (ps != NULL)
1785                                 /* FIXME: cmdline should be here instead of NULL */
1786                                 ps_list_add (task_name, NULL, &pse);
1787                 } /* for (task_list) */
1788
1789                 if ((status = vm_deallocate (port_task_self,
1790                                 (vm_address_t) task_list,
1791                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1792                 {
1793                         ERROR ("vm_deallocate failed: %s",
1794                                         mach_error_string (status));
1795                 }
1796                 task_list = NULL;
1797                 task_list_len = 0;
1798
1799                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1800                                 != KERN_SUCCESS)
1801                 {
1802                         ERROR ("mach_port_deallocate failed: %s",
1803                                         mach_error_string (status));
1804                 }
1805         } /* for (pset_list) */
1806
1807         ps_submit_state ("running", running);
1808         ps_submit_state ("sleeping", sleeping);
1809         ps_submit_state ("zombies", zombies);
1810         ps_submit_state ("stopped", stopped);
1811         ps_submit_state ("blocked", blocked);
1812
1813         for (ps = list_head_g; ps != NULL; ps = ps->next)
1814                 ps_submit_proc_list (ps);
1815 /* #endif HAVE_THREAD_INFO */
1816
1817 #elif KERNEL_LINUX
1818         int running  = 0;
1819         int sleeping = 0;
1820         int zombies  = 0;
1821         int stopped  = 0;
1822         int paging   = 0;
1823         int blocked  = 0;
1824
1825         struct dirent *ent;
1826         DIR           *proc;
1827         int            pid;
1828
1829         char cmdline[CMDLINE_BUFFER_SIZE];
1830
1831         int        status;
1832         procstat_t ps;
1833         procstat_entry_t pse;
1834         char       state;
1835
1836         procstat_t *ps_ptr;
1837
1838         running = sleeping = zombies = stopped = paging = blocked = 0;
1839         ps_list_reset ();
1840
1841         if ((proc = opendir ("/proc")) == NULL)
1842         {
1843                 char errbuf[1024];
1844                 ERROR ("Cannot open `/proc': %s",
1845                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1846                 return (-1);
1847         }
1848
1849         while ((ent = readdir (proc)) != NULL)
1850         {
1851                 if (!isdigit (ent->d_name[0]))
1852                         continue;
1853
1854                 if ((pid = atoi (ent->d_name)) < 1)
1855                         continue;
1856
1857                 status = ps_read_process (pid, &ps, &state);
1858                 if (status != 0)
1859                 {
1860                         DEBUG ("ps_read_process failed: %i", status);
1861                         continue;
1862                 }
1863
1864                 memset (&pse, 0, sizeof (pse));
1865                 pse.id       = pid;
1866                 pse.age      = 0;
1867
1868                 pse.num_proc   = ps.num_proc;
1869                 pse.num_lwp    = ps.num_lwp;
1870                 pse.vmem_size  = ps.vmem_size;
1871                 pse.vmem_rss   = ps.vmem_rss;
1872                 pse.vmem_data  = ps.vmem_data;
1873                 pse.vmem_code  = ps.vmem_code;
1874                 pse.stack_size = ps.stack_size;
1875
1876                 pse.vmem_minflt = 0;
1877                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1878                 pse.vmem_majflt = 0;
1879                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1880
1881                 pse.cpu_user = 0;
1882                 pse.cpu_user_counter = ps.cpu_user_counter;
1883                 pse.cpu_system = 0;
1884                 pse.cpu_system_counter = ps.cpu_system_counter;
1885
1886                 pse.io_rchar = ps.io_rchar;
1887                 pse.io_wchar = ps.io_wchar;
1888                 pse.io_syscr = ps.io_syscr;
1889                 pse.io_syscw = ps.io_syscw;
1890
1891                 pse.cswitch_vol = ps.cswitch_vol;
1892                 pse.cswitch_invol = ps.cswitch_invol;
1893
1894                 switch (state)
1895                 {
1896                         case 'R': running++;  break;
1897                         case 'S': sleeping++; break;
1898                         case 'D': blocked++;  break;
1899                         case 'Z': zombies++;  break;
1900                         case 'T': stopped++;  break;
1901                         case 'W': paging++;   break;
1902                 }
1903
1904                 ps_list_add (ps.name,
1905                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1906                                 &pse);
1907         }
1908
1909         closedir (proc);
1910
1911         ps_submit_state ("running",  running);
1912         ps_submit_state ("sleeping", sleeping);
1913         ps_submit_state ("zombies",  zombies);
1914         ps_submit_state ("stopped",  stopped);
1915         ps_submit_state ("paging",   paging);
1916         ps_submit_state ("blocked",  blocked);
1917
1918         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1919                 ps_submit_proc_list (ps_ptr);
1920
1921         read_fork_rate();
1922 /* #endif KERNEL_LINUX */
1923
1924 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1925         int running  = 0;
1926         int sleeping = 0;
1927         int zombies  = 0;
1928         int stopped  = 0;
1929         int blocked  = 0;
1930         int idle     = 0;
1931         int wait     = 0;
1932
1933         kvm_t *kd;
1934         char errbuf[_POSIX2_LINE_MAX];
1935         struct kinfo_proc *procs;          /* array of processes */
1936         struct kinfo_proc *proc_ptr = NULL;
1937         int count;                         /* returns number of processes */
1938         int i;
1939
1940         procstat_t *ps_ptr;
1941         procstat_entry_t pse;
1942
1943         ps_list_reset ();
1944
1945         /* Open the kvm interface, get a descriptor */
1946         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1947         if (kd == NULL)
1948         {
1949                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1950                                 errbuf);
1951                 return (0);
1952         }
1953
1954         /* Get the list of processes. */
1955         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1956         if (procs == NULL)
1957         {
1958                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1959                                 kvm_geterr(kd));
1960                 kvm_close (kd);
1961                 return (0);
1962         }
1963
1964         /* Iterate through the processes in kinfo_proc */
1965         for (i = 0; i < count; i++)
1966         {
1967                 /* Create only one process list entry per _process_, i.e.
1968                  * filter out threads (duplicate PID entries). */
1969                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1970                 {
1971                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1972                         _Bool have_cmdline = 0;
1973
1974                         proc_ptr = &(procs[i]);
1975                         /* Don't probe system processes and processes without arguments */
1976                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1977                                         && (procs[i].ki_args != NULL))
1978                         {
1979                                 char **argv;
1980                                 int argc;
1981                                 int status;
1982
1983                                 /* retrieve the arguments */
1984                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1985                                 argc = 0;
1986                                 if ((argv != NULL) && (argv[0] != NULL))
1987                                 {
1988                                         while (argv[argc] != NULL)
1989                                                 argc++;
1990
1991                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
1992                                         if (status < 0)
1993                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
1994                                         else
1995                                                 have_cmdline = 1;
1996                                 }
1997                         } /* if (process has argument list) */
1998
1999                         pse.id       = procs[i].ki_pid;
2000                         pse.age      = 0;
2001
2002                         pse.num_proc = 1;
2003                         pse.num_lwp  = procs[i].ki_numthreads;
2004
2005                         pse.vmem_size = procs[i].ki_size;
2006                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
2007                         pse.vmem_data = procs[i].ki_dsize * pagesize;
2008                         pse.vmem_code = procs[i].ki_tsize * pagesize;
2009                         pse.stack_size = procs[i].ki_ssize * pagesize;
2010                         pse.vmem_minflt = 0;
2011                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
2012                         pse.vmem_majflt = 0;
2013                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
2014
2015                         pse.cpu_user = 0;
2016                         pse.cpu_system = 0;
2017                         pse.cpu_user_counter = 0;
2018                         pse.cpu_system_counter = 0;
2019                         /*
2020                          * The u-area might be swapped out, and we can't get
2021                          * at it because we have a crashdump and no swap.
2022                          * If it's here fill in these fields, otherwise, just
2023                          * leave them 0.
2024                          */
2025                         if (procs[i].ki_flag & P_INMEM)
2026                         {
2027                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2028                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2029                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2030                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2031                         }
2032
2033                         /* no I/O data */
2034                         pse.io_rchar = -1;
2035                         pse.io_wchar = -1;
2036                         pse.io_syscr = -1;
2037                         pse.io_syscw = -1;
2038
2039                         /* context switch counters not implemented */
2040                         pse.cswitch_vol   = -1;
2041                         pse.cswitch_invol = -1;
2042
2043                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2044
2045                         switch (procs[i].ki_stat)
2046                         {
2047                                 case SSTOP:     stopped++;      break;
2048                                 case SSLEEP:    sleeping++;     break;
2049                                 case SRUN:      running++;      break;
2050                                 case SIDL:      idle++;         break;
2051                                 case SWAIT:     wait++;         break;
2052                                 case SLOCK:     blocked++;      break;
2053                                 case SZOMB:     zombies++;      break;
2054                         }
2055                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2056         }
2057
2058         kvm_close(kd);
2059
2060         ps_submit_state ("running",  running);
2061         ps_submit_state ("sleeping", sleeping);
2062         ps_submit_state ("zombies",  zombies);
2063         ps_submit_state ("stopped",  stopped);
2064         ps_submit_state ("blocked",  blocked);
2065         ps_submit_state ("idle",     idle);
2066         ps_submit_state ("wait",     wait);
2067
2068         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2069                 ps_submit_proc_list (ps_ptr);
2070 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2071
2072 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2073         int running  = 0;
2074         int sleeping = 0;
2075         int zombies  = 0;
2076         int stopped  = 0;
2077         int onproc   = 0;
2078         int idle     = 0;
2079         int dead     = 0;
2080
2081         kvm_t *kd;
2082         char errbuf[1024];
2083         struct kinfo_proc *procs;          /* array of processes */
2084         struct kinfo_proc *proc_ptr = NULL;
2085         int count;                         /* returns number of processes */
2086         int i;
2087
2088         procstat_t *ps_ptr;
2089         procstat_entry_t pse;
2090
2091         ps_list_reset ();
2092
2093         /* Open the kvm interface, get a descriptor */
2094         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2095         if (kd == NULL)
2096         {
2097                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2098                                 errbuf);
2099                 return (0);
2100         }
2101
2102         /* Get the list of processes. */
2103         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2104         if (procs == NULL)
2105         {
2106                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2107                                 kvm_geterr(kd));
2108                 kvm_close (kd);
2109                 return (0);
2110         }
2111
2112         /* Iterate through the processes in kinfo_proc */
2113         for (i = 0; i < count; i++)
2114         {
2115                 /* Create only one process list entry per _process_, i.e.
2116                  * filter out threads (duplicate PID entries). */
2117                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2118                 {
2119                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2120                         _Bool have_cmdline = 0;
2121
2122                         proc_ptr = &(procs[i]);
2123                         /* Don't probe zombie processes  */
2124                         if (!P_ZOMBIE(proc_ptr))
2125                         {
2126                                 char **argv;
2127                                 int argc;
2128                                 int status;
2129
2130                                 /* retrieve the arguments */
2131                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2132                                 argc = 0;
2133                                 if ((argv != NULL) && (argv[0] != NULL))
2134                                 {
2135                                         while (argv[argc] != NULL)
2136                                                 argc++;
2137
2138                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2139                                         if (status < 0)
2140                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2141                                         else
2142                                                 have_cmdline = 1;
2143                                 }
2144                         } /* if (process has argument list) */
2145
2146                         memset (&pse, 0, sizeof (pse));
2147                         pse.id       = procs[i].p_pid;
2148                         pse.age      = 0;
2149
2150                         pse.num_proc = 1;
2151                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2152
2153                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2154                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2155                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2156                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2157                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2158                         pse.vmem_minflt = 0;
2159                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2160                         pse.vmem_majflt = 0;
2161                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2162
2163                         pse.cpu_user = 0;
2164                         pse.cpu_system = 0;
2165                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2166                                                 (1000000lu * procs[i].p_uutime_sec);
2167                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2168                                                 (1000000lu * procs[i].p_ustime_sec);
2169
2170                         /* no I/O data */
2171                         pse.io_rchar = -1;
2172                         pse.io_wchar = -1;
2173                         pse.io_syscr = -1;
2174                         pse.io_syscw = -1;
2175
2176                         /* context switch counters not implemented */
2177                         pse.cswitch_vol   = -1;
2178                         pse.cswitch_invol = -1;
2179
2180                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2181
2182                         switch (procs[i].p_stat)
2183                         {
2184                                 case SSTOP:     stopped++;      break;
2185                                 case SSLEEP:    sleeping++;     break;
2186                                 case SRUN:      running++;      break;
2187                                 case SIDL:      idle++;         break;
2188                                 case SONPROC:   onproc++;       break;
2189                                 case SDEAD:     dead++;         break;
2190                                 case SZOMB:     zombies++;      break;
2191                         }
2192                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2193         }
2194
2195         kvm_close(kd);
2196
2197         ps_submit_state ("running",  running);
2198         ps_submit_state ("sleeping", sleeping);
2199         ps_submit_state ("zombies",  zombies);
2200         ps_submit_state ("stopped",  stopped);
2201         ps_submit_state ("onproc",   onproc);
2202         ps_submit_state ("idle",     idle);
2203         ps_submit_state ("dead",     dead);
2204
2205         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2206                 ps_submit_proc_list (ps_ptr);
2207 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2208
2209 #elif HAVE_PROCINFO_H
2210         /* AIX */
2211         int running  = 0;
2212         int sleeping = 0;
2213         int zombies  = 0;
2214         int stopped  = 0;
2215         int paging   = 0;
2216         int blocked  = 0;
2217
2218         pid_t pindex = 0;
2219         int nprocs;
2220
2221         procstat_t *ps;
2222         procstat_entry_t pse;
2223
2224         ps_list_reset ();
2225         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2226                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2227                                         &pindex, MAXPROCENTRY)) > 0)
2228         {
2229                 int i;
2230
2231                 for (i = 0; i < nprocs; i++)
2232                 {
2233                         tid64_t thindex;
2234                         int nthreads;
2235                         char arglist[MAXARGLN+1];
2236                         char *cargs;
2237                         char *cmdline;
2238
2239                         if (procentry[i].pi_state == SNONE) continue;
2240                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2241
2242                         cmdline = procentry[i].pi_comm;
2243                         cargs = procentry[i].pi_comm;
2244                         if ( procentry[i].pi_flags & SKPROC )
2245                         {
2246                                 if (procentry[i].pi_pid == 0)
2247                                         cmdline = "swapper";
2248                                 cargs = cmdline;
2249                         }
2250                         else
2251                         {
2252                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2253                                 {
2254                                         int n;
2255
2256                                         n = -1;
2257                                         while (++n < MAXARGLN)
2258                                         {
2259                                                 if (arglist[n] == '\0')
2260                                                 {
2261                                                         if (arglist[n+1] == '\0')
2262                                                                 break;
2263                                                         arglist[n] = ' ';
2264                                                 }
2265                                         }
2266                                         cargs = arglist;
2267                                 }
2268                         }
2269
2270                         pse.id       = procentry[i].pi_pid;
2271                         pse.age      = 0;
2272                         pse.num_lwp  = procentry[i].pi_thcount;
2273                         pse.num_proc = 1;
2274
2275                         thindex=0;
2276                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2277                                                         thrdentry, sizeof(struct thrdentry64),
2278                                                         &thindex, MAXTHRDENTRY)) > 0)
2279                         {
2280                                 int j;
2281
2282                                 for (j=0; j< nthreads; j++)
2283                                 {
2284                                         switch (thrdentry[j].ti_state)
2285                                         {
2286                                                 /* case TSNONE: break; */
2287                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2288                                                 case TSRUN:     running++;      break;
2289                                                 case TSSLEEP:   sleeping++;     break;
2290                                                 case TSSWAP:    paging++;       break;
2291                                                 case TSSTOP:    stopped++;      break;
2292                                                 case TSZOMB:    zombies++;      break;
2293                                         }
2294                                 }
2295                                 if (nthreads < MAXTHRDENTRY)
2296                                         break;
2297                         }
2298
2299                         pse.cpu_user = 0;
2300                         /* tv_usec is nanosec ??? */
2301                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2302                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2303
2304                         pse.cpu_system = 0;
2305                         /* tv_usec is nanosec ??? */
2306                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2307                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2308
2309                         pse.vmem_minflt = 0;
2310                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2311                         pse.vmem_majflt = 0;
2312                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2313
2314                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2315                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2316                         /* Not supported */
2317                         pse.vmem_data = 0;
2318                         pse.vmem_code = 0;
2319                         pse.stack_size =  0;
2320
2321                         pse.io_rchar = -1;
2322                         pse.io_wchar = -1;
2323                         pse.io_syscr = -1;
2324                         pse.io_syscw = -1;
2325
2326                         pse.cswitch_vol   = -1;
2327                         pse.cswitch_invol = -1;
2328
2329                         ps_list_add (cmdline, cargs, &pse);
2330                 } /* for (i = 0 .. nprocs) */
2331
2332                 if (nprocs < MAXPROCENTRY)
2333                         break;
2334         } /* while (getprocs64() > 0) */
2335         ps_submit_state ("running",  running);
2336         ps_submit_state ("sleeping", sleeping);
2337         ps_submit_state ("zombies",  zombies);
2338         ps_submit_state ("stopped",  stopped);
2339         ps_submit_state ("paging",   paging);
2340         ps_submit_state ("blocked",  blocked);
2341
2342         for (ps = list_head_g; ps != NULL; ps = ps->next)
2343                 ps_submit_proc_list (ps);
2344 /* #endif HAVE_PROCINFO_H */
2345
2346 #elif KERNEL_SOLARIS
2347         /*
2348          * The Solaris section adds a few more process states and removes some
2349          * process states compared to linux. Most notably there is no "PAGING"
2350          * and "BLOCKED" state for a process.  The rest is similar to the linux
2351          * code.
2352          */
2353         int running = 0;
2354         int sleeping = 0;
2355         int zombies = 0;
2356         int stopped = 0;
2357         int detached = 0;
2358         int daemon = 0;
2359         int system = 0;
2360         int orphan = 0;
2361
2362         struct dirent *ent;
2363         DIR *proc;
2364
2365         int status;
2366         procstat_t *ps_ptr;
2367         char state;
2368
2369         char cmdline[PRARGSZ];
2370
2371         ps_list_reset ();
2372
2373         proc = opendir ("/proc");
2374         if (proc == NULL)
2375                 return (-1);
2376
2377         while ((ent = readdir(proc)) != NULL)
2378         {
2379                 long pid;
2380                 struct procstat ps;
2381                 procstat_entry_t pse;
2382                 char *endptr;
2383
2384                 if (!isdigit ((int) ent->d_name[0]))
2385                         continue;
2386
2387                 pid = strtol (ent->d_name, &endptr, 10);
2388                 if (*endptr != 0) /* value didn't completely parse as a number */
2389                         continue;
2390
2391                 status = ps_read_process (pid, &ps, &state);
2392                 if (status != 0)
2393                 {
2394                         DEBUG("ps_read_process failed: %i", status);
2395                         continue;
2396                 }
2397
2398                 memset (&pse, 0, sizeof (pse));
2399                 pse.id = pid;
2400                 pse.age = 0;
2401
2402                 pse.num_proc   = ps.num_proc;
2403                 pse.num_lwp    = ps.num_lwp;
2404                 pse.vmem_size  = ps.vmem_size;
2405                 pse.vmem_rss   = ps.vmem_rss;
2406                 pse.vmem_data  = ps.vmem_data;
2407                 pse.vmem_code  = ps.vmem_code;
2408                 pse.stack_size = ps.stack_size;
2409
2410                 pse.vmem_minflt = 0;
2411                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2412                 pse.vmem_majflt = 0;
2413                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2414
2415                 pse.cpu_user = 0;
2416                 pse.cpu_user_counter = ps.cpu_user_counter;
2417                 pse.cpu_system = 0;
2418                 pse.cpu_system_counter = ps.cpu_system_counter;
2419
2420                 pse.io_rchar = ps.io_rchar;
2421                 pse.io_wchar = ps.io_wchar;
2422                 pse.io_syscr = ps.io_syscr;
2423                 pse.io_syscw = ps.io_syscw;
2424
2425                 pse.cswitch_vol = -1;
2426                 pse.cswitch_invol = -1;
2427
2428                 switch (state)
2429                 {
2430                         case 'R': running++;  break;
2431                         case 'S': sleeping++; break;
2432                         case 'E': detached++; break;
2433                         case 'Z': zombies++;  break;
2434                         case 'T': stopped++;  break;
2435                         case 'A': daemon++;   break;
2436                         case 'Y': system++;   break;
2437                         case 'O': orphan++;   break;
2438                 }
2439
2440
2441                 ps_list_add (ps.name,
2442                                 ps_get_cmdline (pid, cmdline, sizeof (cmdline)),
2443                                 &pse);
2444         } /* while(readdir) */
2445         closedir (proc);
2446
2447         ps_submit_state ("running",  running);
2448         ps_submit_state ("sleeping", sleeping);
2449         ps_submit_state ("zombies",  zombies);
2450         ps_submit_state ("stopped",  stopped);
2451         ps_submit_state ("detached", detached);
2452         ps_submit_state ("daemon",   daemon);
2453         ps_submit_state ("system",   system);
2454         ps_submit_state ("orphan",   orphan);
2455
2456         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2457                 ps_submit_proc_list (ps_ptr);
2458
2459         read_fork_rate();
2460 #endif /* KERNEL_SOLARIS */
2461
2462         return (0);
2463 } /* int ps_read */
2464
2465 void module_register (void)
2466 {
2467         plugin_register_complex_config ("processes", ps_config);
2468         plugin_register_init ("processes", ps_init);
2469         plugin_register_read ("processes", ps_read);
2470 } /* void module_register */