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, "ps_cswitch_vol", sizeof (vl.type));
 766                 vl.values[0].derive = ps->cswitch_vol;
 767                 vl.values_len = 1;
 768                 plugin_dispatch_values (&vl);
 769
 770                 sstrncpy (vl.type, "ps_cswitch_invol", sizeof (vl.type));
 771                 vl.values[0].derive = ps->cswitch_invol;
 772                 vl.values_len = 1;
 773                 plugin_dispatch_values (&vl);
 774         }
 775
 776         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 777                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 778                         "vmem_code = %lu; "
 779                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 780                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 781                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 782                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 783                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 784                         ps->name, ps->num_proc, ps->num_lwp,
 785                         ps->vmem_size, ps->vmem_rss,
 786                         ps->vmem_data, ps->vmem_code,
 787                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 788                         ps->cpu_user_counter, ps->cpu_system_counter,
 789                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 790                         ps->cswitch_vol, ps->cswitch_invol);
 791 } /* void ps_submit_proc_list */
 792
 793 #if KERNEL_LINUX || KERNEL_SOLARIS
 794 static void ps_submit_fork_rate (derive_t value)
 795 {
 796         value_t values[1];
 797         value_list_t vl = VALUE_LIST_INIT;
 798
 799         values[0].derive = value;
 800
 801         vl.values = values;
 802         vl.values_len = 1;
 803         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 804         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 805         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 806         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 807         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 808
 809         plugin_dispatch_values(&vl);
 810 }
 811 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 812
 813 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 814 #if KERNEL_LINUX
 815 static procstat_t *ps_read_tasks_status (int pid, procstat_t *ps)
 816 {
 817         char           dirname[64];
 818         DIR           *dh;
 819         char           filename[64];
 820         FILE          *fh;
 821         struct dirent *ent;
 822         unsigned long long cswitch_vol = 0;
 823         unsigned long long cswitch_invol = 0;
 824         char buffer[1024];
 825         char *fields[8];
 826         int numfields;
 827
 828         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 829
 830         if ((dh = opendir (dirname)) == NULL)
 831         {
 832                 DEBUG ("Failed to open directory `%s'", dirname);
 833                 return (NULL);
 834         }
 835
 836         while ((ent = readdir (dh)) != NULL)
 837         {
 838                 char *tpid;
 839
 840                 if (!isdigit ((int) ent->d_name[0]))
 841                         continue;
 842
 843                 tpid = ent->d_name;
 844
 845                 ssnprintf (filename, sizeof (filename), "/proc/%i/task/%s/status", pid, tpid);
 846                 if ((fh = fopen (filename, "r")) == NULL)
 847                 {
 848                         DEBUG ("Failed to open file `%s'", filename);
 849                         continue;
 850                 }
 851
 852                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 853                 {
 854                         long long tmp;
 855                         char *endptr;
 856
 857                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 858                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 859                                 continue;
 860
 861                         numfields = strsplit (buffer, fields,
 862                                 STATIC_ARRAY_SIZE (fields));
 863
 864                         if (numfields < 2)
 865                                 continue;
 866
 867                         errno = 0;
 868                         endptr = NULL;
 869                         tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 870                         if ((errno == 0) && (endptr != fields[1]))
 871                         {
 872                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 873                                 {
 874                                         cswitch_vol += tmp;
 875                                 }
 876                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 877                                 {
 878                                         cswitch_invol += tmp;
 879                                 }
 880                         }
 881                 } /* while (fgets) */
 882
 883                 if (fclose (fh))
 884                 {
 885                         char errbuf[1024];
 886                                 WARNING ("processes: fclose: %s",
 887                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 888                 }
 889         }
 890         closedir (dh);
 891
 892         ps->cswitch_vol = cswitch_vol;
 893         ps->cswitch_invol = cswitch_invol;
 894
 895         return (ps);
 896 } /* int *ps_read_tasks_status */
 897
 898 static int ps_read_tasks (int pid)
 899 {
 900         char           dirname[64];
 901         DIR           *dh;
 902         struct dirent *ent;
 903         int count = 0;
 904
 905         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 906
 907         if ((dh = opendir (dirname)) == NULL)
 908         {
 909                 DEBUG ("Failed to open directory `%s'", dirname);
 910                 return (-1);
 911         }
 912
 913         while ((ent = readdir (dh)) != NULL)
 914         {
 915                 if (!isdigit ((int) ent->d_name[0]))
 916                         continue;
 917                 else
 918                         count++;
 919         }
 920         closedir (dh);
 921
 922         return ((count >= 1) ? count : 1);
 923 } /* int *ps_read_tasks */
 924
 925 /* Read advanced virtual memory data from /proc/pid/status */
 926 static procstat_t *ps_read_vmem (int pid, procstat_t *ps)
 927 {
 928         FILE *fh;
 929         char buffer[1024];
 930         char filename[64];
 931         unsigned long long lib = 0;
 932         unsigned long long exe = 0;
 933         unsigned long long data = 0;
 934         char *fields[8];
 935         int numfields;
 936
 937         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 938         if ((fh = fopen (filename, "r")) == NULL)
 939                 return (NULL);
 940
 941         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 942         {
 943                 long long tmp;
 944                 char *endptr;
 945
 946                 if (strncmp (buffer, "Vm", 2) != 0)
 947                         continue;
 948
 949                 numfields = strsplit (buffer, fields,
 950                                 STATIC_ARRAY_SIZE (fields));
 951
 952                 if (numfields < 2)
 953                         continue;
 954
 955                 errno = 0;
 956                 endptr = NULL;
 957                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 958                 if ((errno == 0) && (endptr != fields[1]))
 959                 {
 960                         if (strncmp (buffer, "VmData", 6) == 0)
 961                         {
 962                                 data = tmp;
 963                         }
 964                         else if (strncmp (buffer, "VmLib", 5) == 0)
 965                         {
 966                                 lib = tmp;
 967                         }
 968                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 969                         {
 970                                 exe = tmp;
 971                         }
 972                 }
 973         } /* while (fgets) */
 974
 975         if (fclose (fh))
 976         {
 977                 char errbuf[1024];
 978                 WARNING ("processes: fclose: %s",
 979                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 980         }
 981
 982         ps->vmem_data = data * 1024;
 983         ps->vmem_code = (exe + lib) * 1024;
 984
 985         return (ps);
 986 } /* procstat_t *ps_read_vmem */
 987
 988 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 989 {
 990         FILE *fh;
 991         char buffer[1024];
 992         char filename[64];
 993
 994         char *fields[8];
 995         int numfields;
 996
 997         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 998         if ((fh = fopen (filename, "r")) == NULL)
 999                 return (NULL);
1000
1001         while (fgets (buffer, sizeof (buffer), fh) != NULL)
1002         {
1003                 derive_t *val = NULL;
1004                 long long tmp;
1005                 char *endptr;
1006
1007                 if (strncasecmp (buffer, "rchar:", 6) == 0)
1008                         val = &(ps->io_rchar);
1009                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
1010                         val = &(ps->io_wchar);
1011                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
1012                         val = &(ps->io_syscr);
1013                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
1014                         val = &(ps->io_syscw);
1015                 else
1016                         continue;
1017
1018                 numfields = strsplit (buffer, fields,
1019                                 STATIC_ARRAY_SIZE (fields));
1020
1021                 if (numfields < 2)
1022                         continue;
1023
1024                 errno = 0;
1025                 endptr = NULL;
1026                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
1027                 if ((errno != 0) || (endptr == fields[1]))
1028                         *val = -1;
1029                 else
1030                         *val = (derive_t) tmp;
1031         } /* while (fgets) */
1032
1033         if (fclose (fh))
1034         {
1035                 char errbuf[1024];
1036                 WARNING ("processes: fclose: %s",
1037                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1038         }
1039
1040         return (ps);
1041 } /* procstat_t *ps_read_io */
1042
1043 int ps_read_process (int pid, procstat_t *ps, char *state)
1044 {
1045         char  filename[64];
1046         char  buffer[1024];
1047
1048         char *fields[64];
1049         char  fields_len;
1050
1051         int   buffer_len;
1052
1053         char *buffer_ptr;
1054         size_t name_start_pos;
1055         size_t name_end_pos;
1056         size_t name_len;
1057
1058         derive_t cpu_user_counter;
1059         derive_t cpu_system_counter;
1060         long long unsigned vmem_size;
1061         long long unsigned vmem_rss;
1062         long long unsigned stack_size;
1063
1064         memset (ps, 0, sizeof (procstat_t));
1065
1066         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
1067
1068         buffer_len = read_file_contents (filename,
1069                         buffer, sizeof(buffer) - 1);
1070         if (buffer_len <= 0)
1071                 return (-1);
1072         buffer[buffer_len] = 0;
1073
1074         /* The name of the process is enclosed in parens. Since the name can
1075          * contain parens itself, spaces, numbers and pretty much everything
1076          * else, use these to determine the process name. We don't use
1077          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1078          * otherwise be required to determine name_len. */
1079         name_start_pos = 0;
1080         while ((buffer[name_start_pos] != '(')
1081                         && (name_start_pos < buffer_len))
1082                 name_start_pos++;
1083
1084         name_end_pos = buffer_len;
1085         while ((buffer[name_end_pos] != ')')
1086                         && (name_end_pos > 0))
1087                 name_end_pos--;
1088
1089         /* Either '(' or ')' is not found or they are in the wrong order.
1090          * Anyway, something weird that shouldn't happen ever. */
1091         if (name_start_pos >= name_end_pos)
1092         {
1093                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1094                                 name_start_pos, name_end_pos);
1095                 return (-1);
1096         }
1097
1098         name_len = (name_end_pos - name_start_pos) - 1;
1099         if (name_len >= sizeof (ps->name))
1100                 name_len = sizeof (ps->name) - 1;
1101
1102         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1103
1104         if ((buffer_len - name_end_pos) < 2)
1105                 return (-1);
1106         buffer_ptr = &buffer[name_end_pos + 2];
1107
1108         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1109         if (fields_len < 22)
1110         {
1111                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
1112                                 " `%s' has only %i fields..",
1113                                 (int) pid, filename, fields_len);
1114                 return (-1);
1115         }
1116
1117         *state = fields[0][0];
1118
1119         if (*state == 'Z')
1120         {
1121                 ps->num_lwp  = 0;
1122                 ps->num_proc = 0;
1123         }
1124         else
1125         {
1126                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
1127                 {
1128                         /* returns -1 => kernel 2.4 */
1129                         ps->num_lwp = 1;
1130                 }
1131                 ps->num_proc = 1;
1132         }
1133
1134         /* Leave the rest at zero if this is only a zombi */
1135         if (ps->num_proc == 0)
1136         {
1137                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
1138                                 "name = %s;", pid, ps->name);
1139                 return (0);
1140         }
1141
1142         cpu_user_counter   = atoll (fields[11]);
1143         cpu_system_counter = atoll (fields[12]);
1144         vmem_size          = atoll (fields[20]);
1145         vmem_rss           = atoll (fields[21]);
1146         ps->vmem_minflt_counter = atol (fields[7]);
1147         ps->vmem_majflt_counter = atol (fields[9]);
1148
1149         {
1150                 unsigned long long stack_start = atoll (fields[25]);
1151                 unsigned long long stack_ptr   = atoll (fields[26]);
1152
1153                 stack_size = (stack_start > stack_ptr)
1154                         ? stack_start - stack_ptr
1155                         : stack_ptr - stack_start;
1156         }
1157
1158         /* Convert jiffies to useconds */
1159         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1160         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1161         vmem_rss = vmem_rss * pagesize_g;
1162
1163         if ( (ps_read_vmem(pid, ps)) == NULL)
1164         {
1165                 /* No VMem data */
1166                 ps->vmem_data = -1;
1167                 ps->vmem_code = -1;
1168                 DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
1169         }
1170
1171         ps->cpu_user_counter = cpu_user_counter;
1172         ps->cpu_system_counter = cpu_system_counter;
1173         ps->vmem_size = (unsigned long) vmem_size;
1174         ps->vmem_rss = (unsigned long) vmem_rss;
1175         ps->stack_size = (unsigned long) stack_size;
1176
1177         if ( (ps_read_io (pid, ps)) == NULL)
1178         {
1179                 /* no io data */
1180                 ps->io_rchar = -1;
1181                 ps->io_wchar = -1;
1182                 ps->io_syscr = -1;
1183                 ps->io_syscw = -1;
1184
1185                 DEBUG("ps_read_process: not get io data for pid %i",pid);
1186         }
1187
1188         if ( report_ctx_switch )
1189         {
1190                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1191                 {
1192                         ps->cswitch_vol = -1;
1193                         ps->cswitch_invol = -1;
1194
1195                         DEBUG("ps_read_tasks_status: not get context "
1196                                         "switch data for pid %i",pid);
1197                 }
1198         }
1199
1200         /* success */
1201         return (0);
1202 } /* int ps_read_process (...) */
1203
1204 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
1205 {
1206         char  *buf_ptr;
1207         size_t len;
1208
1209         char file[PATH_MAX];
1210         int  fd;
1211
1212         size_t n;
1213
1214         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1215                 return NULL;
1216
1217         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1218                         (unsigned int) pid);
1219
1220         errno = 0;
1221         fd = open (file, O_RDONLY);
1222         if (fd < 0) {
1223                 char errbuf[4096];
1224                 /* ENOENT means the process exited while we were handling it.
1225                  * Don't complain about this, it only fills the logs. */
1226                 if (errno != ENOENT)
1227                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1228                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1229                 return NULL;
1230         }
1231
1232         buf_ptr = buf;
1233         len     = buf_len;
1234
1235         n = 0;
1236
1237         while (42) {
1238                 ssize_t status;
1239
1240                 status = read (fd, (void *)buf_ptr, len);
1241
1242                 if (status < 0) {
1243                         char errbuf[1024];
1244
1245                         if ((EAGAIN == errno) || (EINTR == errno))
1246                                 continue;
1247
1248                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1249                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1250                         close (fd);
1251                         return NULL;
1252                 }
1253
1254                 n += status;
1255
1256                 if (status == 0)
1257                         break;
1258
1259                 buf_ptr += status;
1260                 len     -= status;
1261
1262                 if (len <= 0)
1263                         break;
1264         }
1265
1266         close (fd);
1267
1268         if (0 == n) {
1269                 /* cmdline not available; e.g. kernel thread, zombie */
1270                 if (NULL == name)
1271                         return NULL;
1272
1273                 ssnprintf (buf, buf_len, "[%s]", name);
1274                 return buf;
1275         }
1276
1277         assert (n <= buf_len);
1278
1279         if (n == buf_len)
1280                 --n;
1281         buf[n] = '\0';
1282
1283         --n;
1284         /* remove trailing whitespace */
1285         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1286                 buf[n] = '\0';
1287                 --n;
1288         }
1289
1290         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1291         while (n > 0) {
1292                 if ('\0' == buf[n])
1293                         buf[n] = ' ';
1294                 --n;
1295         }
1296         return buf;
1297 } /* char *ps_get_cmdline (...) */
1298
1299 static int read_fork_rate ()
1300 {
1301         FILE *proc_stat;
1302         char buffer[1024];
1303         value_t value;
1304         _Bool value_valid = 0;
1305
1306         proc_stat = fopen ("/proc/stat", "r");
1307         if (proc_stat == NULL)
1308         {
1309                 char errbuf[1024];
1310                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1311                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1312                 return (-1);
1313         }
1314
1315         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1316         {
1317                 int status;
1318                 char *fields[3];
1319                 int fields_num;
1320
1321                 fields_num = strsplit (buffer, fields,
1322                                 STATIC_ARRAY_SIZE (fields));
1323                 if (fields_num != 2)
1324                         continue;
1325
1326                 if (strcmp ("processes", fields[0]) != 0)
1327                         continue;
1328
1329                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1330                 if (status == 0)
1331                         value_valid = 1;
1332
1333                 break;
1334         }
1335         fclose(proc_stat);
1336
1337         if (!value_valid)
1338                 return (-1);
1339
1340         ps_submit_fork_rate (value.derive);
1341         return (0);
1342 }
1343 #endif /*KERNEL_LINUX */
1344
1345 #if KERNEL_SOLARIS
1346 static const char *ps_get_cmdline (long pid, /* {{{ */
1347                 char *buffer, size_t buffer_size)
1348 {
1349         char path[PATH_MAX];
1350         psinfo_t info;
1351         int status;
1352
1353         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1354
1355         status = read_file_contents (path, (void *) &info, sizeof (info));
1356         if (status != sizeof (info))
1357         {
1358                 ERROR ("processes plugin: Unexpected return value "
1359                                 "while reading \"%s\": "
1360                                 "Returned %i but expected %zu.",
1361                                 path, status, buffer_size);
1362                 return (NULL);
1363         }
1364
1365         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1366         sstrncpy (buffer, info.pr_psargs, buffer_size);
1367
1368         return (buffer);
1369 } /* }}} int ps_get_cmdline */
1370
1371 /*
1372  * Reads process information on the Solaris OS. The information comes mainly from
1373  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1374  * The values for input and ouput chars are calculated "by hand"
1375  * Added a few "solaris" specific process states as well
1376  */
1377 static int ps_read_process(long pid, procstat_t *ps, char *state)
1378 {
1379         char filename[64];
1380         char f_psinfo[64], f_usage[64];
1381         char *buffer;
1382
1383         pstatus_t *myStatus;
1384         psinfo_t *myInfo;
1385         prusage_t *myUsage;
1386
1387         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1388         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1389         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1390
1391
1392         buffer = malloc(sizeof (pstatus_t));
1393         memset(buffer, 0, sizeof (pstatus_t));
1394         read_file_contents(filename, buffer, sizeof (pstatus_t));
1395         myStatus = (pstatus_t *) buffer;
1396
1397         buffer = malloc(sizeof (psinfo_t));
1398         memset(buffer, 0, sizeof(psinfo_t));
1399         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1400         myInfo = (psinfo_t *) buffer;
1401
1402         buffer = malloc(sizeof (prusage_t));
1403         memset(buffer, 0, sizeof(prusage_t));
1404         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1405         myUsage = (prusage_t *) buffer;
1406
1407         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1408         ps->num_lwp = myStatus->pr_nlwp;
1409         if (myInfo->pr_wstat != 0) {
1410                 ps->num_proc = 0;
1411                 ps->num_lwp = 0;
1412                 *state = (char) 'Z';
1413                 return (0);
1414         } else {
1415                 ps->num_proc = 1;
1416                 ps->num_lwp = myInfo->pr_nlwp;
1417         }
1418
1419         /*
1420          * Convert system time and user time from nanoseconds to microseconds
1421          * for compatibility with the linux module
1422          */
1423         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1424         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1425
1426         /*
1427          * Convert rssize from KB to bytes to be consistent w/ the linux module
1428          */
1429         ps->vmem_rss = myInfo->pr_rssize * 1024;
1430         ps->vmem_size = myInfo->pr_size * 1024;
1431         ps->vmem_minflt_counter = myUsage->pr_minf;
1432         ps->vmem_majflt_counter = myUsage->pr_majf;
1433
1434         /*
1435          * TODO: Data and code segment calculations for Solaris
1436          */
1437
1438         ps->vmem_data = -1;
1439         ps->vmem_code = -1;
1440         ps->stack_size = myStatus->pr_stksize;
1441
1442         /*
1443          * Calculating input/ouput chars
1444          * Formula used is total chars / total blocks => chars/block
1445          * then convert input/output blocks to chars
1446          */
1447         ulong_t tot_chars = myUsage->pr_ioch;
1448         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1449         ulong_t chars_per_block = 1;
1450         if (tot_blocks != 0)
1451                 chars_per_block = tot_chars / tot_blocks;
1452         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1453         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1454         ps->io_syscr = myUsage->pr_sysc;
1455         ps->io_syscw = myUsage->pr_sysc;
1456
1457
1458         /*
1459          * TODO: Find way of setting BLOCKED and PAGING status
1460          */
1461
1462         *state = (char) 'R';
1463         if (myStatus->pr_flags & PR_ASLEEP)
1464                 *state = (char) 'S';
1465         else if (myStatus->pr_flags & PR_STOPPED)
1466                 *state = (char) 'T';
1467         else if (myStatus->pr_flags & PR_DETACH)
1468                 *state = (char) 'E';
1469         else if (myStatus->pr_flags & PR_DAEMON)
1470                 *state = (char) 'A';
1471         else if (myStatus->pr_flags & PR_ISSYS)
1472                 *state = (char) 'Y';
1473         else if (myStatus->pr_flags & PR_ORPHAN)
1474                 *state = (char) 'O';
1475
1476         sfree(myStatus);
1477         sfree(myInfo);
1478         sfree(myUsage);
1479
1480         return (0);
1481 }
1482
1483 /*
1484  * Reads the number of threads created since the last reboot. On Solaris these
1485  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1486  * The result is the sum for all the threads created on each cpu
1487  */
1488 static int read_fork_rate()
1489 {
1490         extern kstat_ctl_t *kc;
1491         kstat_t *ksp_chain = NULL;
1492         derive_t result = 0;
1493
1494         if (kc == NULL)
1495                 return (-1);
1496
1497         for (ksp_chain = kc->kc_chain;
1498                         ksp_chain != NULL;
1499                         ksp_chain = ksp_chain->ks_next)
1500         {
1501                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1502                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1503                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1504                 {
1505                         long long tmp;
1506
1507                         kstat_read (kc, ksp_chain, NULL);
1508
1509                         tmp = get_kstat_value(ksp_chain, "nthreads");
1510                         if (tmp != -1LL)
1511                                 result += tmp;
1512                 }
1513         }
1514
1515         ps_submit_fork_rate (result);
1516         return (0);
1517 }
1518 #endif /* KERNEL_SOLARIS */
1519
1520 #if HAVE_THREAD_INFO
1521 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1522 {
1523         int mib[4];
1524
1525         struct kinfo_proc kp;
1526         size_t            kp_size;
1527
1528         mib[0] = CTL_KERN;
1529         mib[1] = KERN_PROC;
1530         mib[2] = KERN_PROC_PID;
1531
1532         if (pid_for_task (t, pid) != KERN_SUCCESS)
1533                 return (-1);
1534         mib[3] = *pid;
1535
1536         kp_size = sizeof (kp);
1537         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1538                 return (-1);
1539
1540         if (name_max_len > (MAXCOMLEN + 1))
1541                 name_max_len = MAXCOMLEN + 1;
1542
1543         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1544         name[name_max_len - 1] = '\0';
1545
1546         DEBUG ("pid = %i; name = %s;", *pid, name);
1547
1548         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1549          * `top' does it, because it is a lot of work and only used when
1550          * debugging. -octo */
1551
1552         return (0);
1553 }
1554 #endif /* HAVE_THREAD_INFO */
1555 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1556
1557 /* do actual readings from kernel */
1558 static int ps_read (void)
1559 {
1560 #if HAVE_THREAD_INFO
1561         kern_return_t            status;
1562
1563         int                      pset;
1564         processor_set_t          port_pset_priv;
1565
1566         int                      task;
1567         task_array_t             task_list;
1568         mach_msg_type_number_t   task_list_len;
1569
1570         int                      task_pid;
1571         char                     task_name[MAXCOMLEN + 1];
1572
1573         int                      thread;
1574         thread_act_array_t       thread_list;
1575         mach_msg_type_number_t   thread_list_len;
1576         thread_basic_info_data_t thread_data;
1577         mach_msg_type_number_t   thread_data_len;
1578
1579         int running  = 0;
1580         int sleeping = 0;
1581         int zombies  = 0;
1582         int stopped  = 0;
1583         int blocked  = 0;
1584
1585         procstat_t *ps;
1586         procstat_entry_t pse;
1587
1588         ps_list_reset ();
1589
1590         /*
1591          * The Mach-concept is a little different from the traditional UNIX
1592          * concept: All the work is done in threads. Threads are contained in
1593          * `tasks'. Therefore, `task status' doesn't make much sense, since
1594          * it's actually a `thread status'.
1595          * Tasks are assigned to sets of processors, so that's where you go to
1596          * get a list.
1597          */
1598         for (pset = 0; pset < pset_list_len; pset++)
1599         {
1600                 if ((status = host_processor_set_priv (port_host_self,
1601                                                 pset_list[pset],
1602                                                 &port_pset_priv)) != KERN_SUCCESS)
1603                 {
1604                         ERROR ("host_processor_set_priv failed: %s\n",
1605                                         mach_error_string (status));
1606                         continue;
1607                 }
1608
1609                 if ((status = processor_set_tasks (port_pset_priv,
1610                                                 &task_list,
1611                                                 &task_list_len)) != KERN_SUCCESS)
1612                 {
1613                         ERROR ("processor_set_tasks failed: %s\n",
1614                                         mach_error_string (status));
1615                         mach_port_deallocate (port_task_self, port_pset_priv);
1616                         continue;
1617                 }
1618
1619                 for (task = 0; task < task_list_len; task++)
1620                 {
1621                         ps = NULL;
1622                         if (mach_get_task_name (task_list[task],
1623                                                 &task_pid,
1624                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1625                         {
1626                                 /* search for at least one match */
1627                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1628                                         /* FIXME: cmdline should be here instead of NULL */
1629                                         if (ps_list_match (task_name, NULL, ps) == 1)
1630                                                 break;
1631                         }
1632
1633                         /* Collect more detailed statistics for this process */
1634                         if (ps != NULL)
1635                         {
1636                                 task_basic_info_data_t        task_basic_info;
1637                                 mach_msg_type_number_t        task_basic_info_len;
1638                                 task_events_info_data_t       task_events_info;
1639                                 mach_msg_type_number_t        task_events_info_len;
1640                                 task_absolutetime_info_data_t task_absolutetime_info;
1641                                 mach_msg_type_number_t        task_absolutetime_info_len;
1642
1643                                 memset (&pse, '\0', sizeof (pse));
1644                                 pse.id = task_pid;
1645
1646                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1647                                 status = task_info (task_list[task],
1648                                                 TASK_BASIC_INFO,
1649                                                 (task_info_t) &task_basic_info,
1650                                                 &task_basic_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_events_info_len = TASK_EVENTS_INFO_COUNT;
1659                                 status = task_info (task_list[task],
1660                                                 TASK_EVENTS_INFO,
1661                                                 (task_info_t) &task_events_info,
1662                                                 &task_events_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                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1671                                 status = task_info (task_list[task],
1672                                                 TASK_ABSOLUTETIME_INFO,
1673                                                 (task_info_t) &task_absolutetime_info,
1674                                                 &task_absolutetime_info_len);
1675                                 if (status != KERN_SUCCESS)
1676                                 {
1677                                         ERROR ("task_info failed: %s",
1678                                                         mach_error_string (status));
1679                                         continue; /* with next thread_list */
1680                                 }
1681
1682                                 pse.num_proc++;
1683                                 pse.vmem_size = task_basic_info.virtual_size;
1684                                 pse.vmem_rss = task_basic_info.resident_size;
1685                                 /* Does not seem to be easily exposed */
1686                                 pse.vmem_data = 0;
1687                                 pse.vmem_code = 0;
1688
1689                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1690                                 pse.vmem_majflt_counter = task_events_info.faults;
1691
1692                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1693                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1694                         }
1695
1696                         status = task_threads (task_list[task], &thread_list,
1697                                         &thread_list_len);
1698                         if (status != KERN_SUCCESS)
1699                         {
1700                                 /* Apple's `top' treats this case a zombie. It
1701                                  * makes sense to some extend: A `zombie'
1702                                  * thread is nonsense, since the task/process
1703                                  * is dead. */
1704                                 zombies++;
1705                                 DEBUG ("task_threads failed: %s",
1706                                                 mach_error_string (status));
1707                                 if (task_list[task] != port_task_self)
1708                                         mach_port_deallocate (port_task_self,
1709                                                         task_list[task]);
1710                                 continue; /* with next task_list */
1711                         }
1712
1713                         for (thread = 0; thread < thread_list_len; thread++)
1714                         {
1715                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1716                                 status = thread_info (thread_list[thread],
1717                                                 THREAD_BASIC_INFO,
1718                                                 (thread_info_t) &thread_data,
1719                                                 &thread_data_len);
1720                                 if (status != KERN_SUCCESS)
1721                                 {
1722                                         ERROR ("thread_info failed: %s",
1723                                                         mach_error_string (status));
1724                                         if (task_list[task] != port_task_self)
1725                                                 mach_port_deallocate (port_task_self,
1726                                                                 thread_list[thread]);
1727                                         continue; /* with next thread_list */
1728                                 }
1729
1730                                 if (ps != NULL)
1731                                         pse.num_lwp++;
1732
1733                                 switch (thread_data.run_state)
1734                                 {
1735                                         case TH_STATE_RUNNING:
1736                                                 running++;
1737                                                 break;
1738                                         case TH_STATE_STOPPED:
1739                                         /* What exactly is `halted'? */
1740                                         case TH_STATE_HALTED:
1741                                                 stopped++;
1742                                                 break;
1743                                         case TH_STATE_WAITING:
1744                                                 sleeping++;
1745                                                 break;
1746                                         case TH_STATE_UNINTERRUPTIBLE:
1747                                                 blocked++;
1748                                                 break;
1749                                         /* There is no `zombie' case here,
1750                                          * since there are no zombie-threads.
1751                                          * There's only zombie tasks, which are
1752                                          * handled above. */
1753                                         default:
1754                                                 WARNING ("Unknown thread status: %i",
1755                                                                 thread_data.run_state);
1756                                                 break;
1757                                 } /* switch (thread_data.run_state) */
1758
1759                                 if (task_list[task] != port_task_self)
1760                                 {
1761                                         status = mach_port_deallocate (port_task_self,
1762                                                         thread_list[thread]);
1763                                         if (status != KERN_SUCCESS)
1764                                                 ERROR ("mach_port_deallocate failed: %s",
1765                                                                 mach_error_string (status));
1766                                 }
1767                         } /* for (thread_list) */
1768
1769                         if ((status = vm_deallocate (port_task_self,
1770                                                         (vm_address_t) thread_list,
1771                                                         thread_list_len * sizeof (thread_act_t)))
1772                                         != KERN_SUCCESS)
1773                         {
1774                                 ERROR ("vm_deallocate failed: %s",
1775                                                 mach_error_string (status));
1776                         }
1777                         thread_list = NULL;
1778                         thread_list_len = 0;
1779
1780                         /* Only deallocate the task port, if it isn't our own.
1781                          * Don't know what would happen in that case, but this
1782                          * is what Apple's top does.. ;) */
1783                         if (task_list[task] != port_task_self)
1784                         {
1785                                 status = mach_port_deallocate (port_task_self,
1786                                                 task_list[task]);
1787                                 if (status != KERN_SUCCESS)
1788                                         ERROR ("mach_port_deallocate failed: %s",
1789                                                         mach_error_string (status));
1790                         }
1791
1792                         if (ps != NULL)
1793                                 /* FIXME: cmdline should be here instead of NULL */
1794                                 ps_list_add (task_name, NULL, &pse);
1795                 } /* for (task_list) */
1796
1797                 if ((status = vm_deallocate (port_task_self,
1798                                 (vm_address_t) task_list,
1799                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1800                 {
1801                         ERROR ("vm_deallocate failed: %s",
1802                                         mach_error_string (status));
1803                 }
1804                 task_list = NULL;
1805                 task_list_len = 0;
1806
1807                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1808                                 != KERN_SUCCESS)
1809                 {
1810                         ERROR ("mach_port_deallocate failed: %s",
1811                                         mach_error_string (status));
1812                 }
1813         } /* for (pset_list) */
1814
1815         ps_submit_state ("running", running);
1816         ps_submit_state ("sleeping", sleeping);
1817         ps_submit_state ("zombies", zombies);
1818         ps_submit_state ("stopped", stopped);
1819         ps_submit_state ("blocked", blocked);
1820
1821         for (ps = list_head_g; ps != NULL; ps = ps->next)
1822                 ps_submit_proc_list (ps);
1823 /* #endif HAVE_THREAD_INFO */
1824
1825 #elif KERNEL_LINUX
1826         int running  = 0;
1827         int sleeping = 0;
1828         int zombies  = 0;
1829         int stopped  = 0;
1830         int paging   = 0;
1831         int blocked  = 0;
1832
1833         struct dirent *ent;
1834         DIR           *proc;
1835         int            pid;
1836
1837         char cmdline[CMDLINE_BUFFER_SIZE];
1838
1839         int        status;
1840         procstat_t ps;
1841         procstat_entry_t pse;
1842         char       state;
1843
1844         procstat_t *ps_ptr;
1845
1846         running = sleeping = zombies = stopped = paging = blocked = 0;
1847         ps_list_reset ();
1848
1849         if ((proc = opendir ("/proc")) == NULL)
1850         {
1851                 char errbuf[1024];
1852                 ERROR ("Cannot open `/proc': %s",
1853                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1854                 return (-1);
1855         }
1856
1857         while ((ent = readdir (proc)) != NULL)
1858         {
1859                 if (!isdigit (ent->d_name[0]))
1860                         continue;
1861
1862                 if ((pid = atoi (ent->d_name)) < 1)
1863                         continue;
1864
1865                 status = ps_read_process (pid, &ps, &state);
1866                 if (status != 0)
1867                 {
1868                         DEBUG ("ps_read_process failed: %i", status);
1869                         continue;
1870                 }
1871
1872                 pse.id       = pid;
1873                 pse.age      = 0;
1874
1875                 pse.num_proc   = ps.num_proc;
1876                 pse.num_lwp    = ps.num_lwp;
1877                 pse.vmem_size  = ps.vmem_size;
1878                 pse.vmem_rss   = ps.vmem_rss;
1879                 pse.vmem_data  = ps.vmem_data;
1880                 pse.vmem_code  = ps.vmem_code;
1881                 pse.stack_size = ps.stack_size;
1882
1883                 pse.vmem_minflt = 0;
1884                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1885                 pse.vmem_majflt = 0;
1886                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1887
1888                 pse.cpu_user = 0;
1889                 pse.cpu_user_counter = ps.cpu_user_counter;
1890                 pse.cpu_system = 0;
1891                 pse.cpu_system_counter = ps.cpu_system_counter;
1892
1893                 pse.io_rchar = ps.io_rchar;
1894                 pse.io_wchar = ps.io_wchar;
1895                 pse.io_syscr = ps.io_syscr;
1896                 pse.io_syscw = ps.io_syscw;
1897
1898                 pse.cswitch_vol = ps.cswitch_vol;
1899                 pse.cswitch_invol = ps.cswitch_invol;
1900
1901                 switch (state)
1902                 {
1903                         case 'R': running++;  break;
1904                         case 'S': sleeping++; break;
1905                         case 'D': blocked++;  break;
1906                         case 'Z': zombies++;  break;
1907                         case 'T': stopped++;  break;
1908                         case 'W': paging++;   break;
1909                 }
1910
1911                 ps_list_add (ps.name,
1912                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1913                                 &pse);
1914         }
1915
1916         closedir (proc);
1917
1918         ps_submit_state ("running",  running);
1919         ps_submit_state ("sleeping", sleeping);
1920         ps_submit_state ("zombies",  zombies);
1921         ps_submit_state ("stopped",  stopped);
1922         ps_submit_state ("paging",   paging);
1923         ps_submit_state ("blocked",  blocked);
1924
1925         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1926                 ps_submit_proc_list (ps_ptr);
1927
1928         read_fork_rate();
1929 /* #endif KERNEL_LINUX */
1930
1931 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1932         int running  = 0;
1933         int sleeping = 0;
1934         int zombies  = 0;
1935         int stopped  = 0;
1936         int blocked  = 0;
1937         int idle     = 0;
1938         int wait     = 0;
1939
1940         kvm_t *kd;
1941         char errbuf[_POSIX2_LINE_MAX];
1942         struct kinfo_proc *procs;          /* array of processes */
1943         struct kinfo_proc *proc_ptr = NULL;
1944         int count;                         /* returns number of processes */
1945         int i;
1946
1947         procstat_t *ps_ptr;
1948         procstat_entry_t pse;
1949
1950         ps_list_reset ();
1951
1952         /* Open the kvm interface, get a descriptor */
1953         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1954         if (kd == NULL)
1955         {
1956                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1957                                 errbuf);
1958                 return (0);
1959         }
1960
1961         /* Get the list of processes. */
1962         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1963         if (procs == NULL)
1964         {
1965                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1966                                 kvm_geterr(kd));
1967                 kvm_close (kd);
1968                 return (0);
1969         }
1970
1971         /* Iterate through the processes in kinfo_proc */
1972         for (i = 0; i < count; i++)
1973         {
1974                 /* Create only one process list entry per _process_, i.e.
1975                  * filter out threads (duplicate PID entries). */
1976                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1977                 {
1978                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1979                         _Bool have_cmdline = 0;
1980
1981                         proc_ptr = &(procs[i]);
1982                         /* Don't probe system processes and processes without arguments */
1983                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1984                                         && (procs[i].ki_args != NULL))
1985                         {
1986                                 char **argv;
1987                                 int argc;
1988                                 int status;
1989
1990                                 /* retrieve the arguments */
1991                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1992                                 argc = 0;
1993                                 if ((argv != NULL) && (argv[0] != NULL))
1994                                 {
1995                                         while (argv[argc] != NULL)
1996                                                 argc++;
1997
1998                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
1999                                         if (status < 0)
2000                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2001                                         else
2002                                                 have_cmdline = 1;
2003                                 }
2004                         } /* if (process has argument list) */
2005
2006                         pse.id       = procs[i].ki_pid;
2007                         pse.age      = 0;
2008
2009                         pse.num_proc = 1;
2010                         pse.num_lwp  = procs[i].ki_numthreads;
2011
2012                         pse.vmem_size = procs[i].ki_size;
2013                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
2014                         pse.vmem_data = procs[i].ki_dsize * pagesize;
2015                         pse.vmem_code = procs[i].ki_tsize * pagesize;
2016                         pse.stack_size = procs[i].ki_ssize * pagesize;
2017                         pse.vmem_minflt = 0;
2018                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
2019                         pse.vmem_majflt = 0;
2020                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
2021
2022                         pse.cpu_user = 0;
2023                         pse.cpu_system = 0;
2024                         pse.cpu_user_counter = 0;
2025                         pse.cpu_system_counter = 0;
2026                         /*
2027                          * The u-area might be swapped out, and we can't get
2028                          * at it because we have a crashdump and no swap.
2029                          * If it's here fill in these fields, otherwise, just
2030                          * leave them 0.
2031                          */
2032                         if (procs[i].ki_flag & P_INMEM)
2033                         {
2034                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2035                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2036                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2037                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2038                         }
2039
2040                         /* no I/O data */
2041                         pse.io_rchar = -1;
2042                         pse.io_wchar = -1;
2043                         pse.io_syscr = -1;
2044                         pse.io_syscw = -1;
2045
2046                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2047                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2048
2049                 switch (procs[i].ki_stat)
2050                 {
2051                         case SSTOP:     stopped++;      break;
2052                         case SSLEEP:    sleeping++;     break;
2053                         case SRUN:      running++;      break;
2054                         case SIDL:      idle++;         break;
2055                         case SWAIT:     wait++;         break;
2056                         case SLOCK:     blocked++;      break;
2057                         case SZOMB:     zombies++;      break;
2058                 }
2059         }
2060
2061         kvm_close(kd);
2062
2063         ps_submit_state ("running",  running);
2064         ps_submit_state ("sleeping", sleeping);
2065         ps_submit_state ("zombies",  zombies);
2066         ps_submit_state ("stopped",  stopped);
2067         ps_submit_state ("blocked",  blocked);
2068         ps_submit_state ("idle",     idle);
2069         ps_submit_state ("wait",     wait);
2070
2071         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2072                 ps_submit_proc_list (ps_ptr);
2073 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2074
2075 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2076         int running  = 0;
2077         int sleeping = 0;
2078         int zombies  = 0;
2079         int stopped  = 0;
2080         int onproc   = 0;
2081         int idle     = 0;
2082         int dead     = 0;
2083
2084         kvm_t *kd;
2085         char errbuf[1024];
2086         struct kinfo_proc *procs;          /* array of processes */
2087         struct kinfo_proc *proc_ptr = NULL;
2088         int count;                         /* returns number of processes */
2089         int i;
2090
2091         procstat_t *ps_ptr;
2092         procstat_entry_t pse;
2093
2094         ps_list_reset ();
2095
2096         /* Open the kvm interface, get a descriptor */
2097         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2098         if (kd == NULL)
2099         {
2100                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2101                                 errbuf);
2102                 return (0);
2103         }
2104
2105         /* Get the list of processes. */
2106         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2107         if (procs == NULL)
2108         {
2109                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2110                                 kvm_geterr(kd));
2111                 kvm_close (kd);
2112                 return (0);
2113         }
2114
2115         /* Iterate through the processes in kinfo_proc */
2116         for (i = 0; i < count; i++)
2117         {
2118                 /* Create only one process list entry per _process_, i.e.
2119                  * filter out threads (duplicate PID entries). */
2120                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2121                 {
2122                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2123                         _Bool have_cmdline = 0;
2124
2125                         proc_ptr = &(procs[i]);
2126                         /* Don't probe zombie processes  */
2127                         if (!P_ZOMBIE(proc_ptr))
2128                         {
2129                                 char **argv;
2130                                 int argc;
2131                                 int status;
2132
2133                                 /* retrieve the arguments */
2134                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2135                                 argc = 0;
2136                                 if ((argv != NULL) && (argv[0] != NULL))
2137                                 {
2138                                         while (argv[argc] != NULL)
2139                                                 argc++;
2140
2141                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2142                                         if (status < 0)
2143                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2144                                         else
2145                                                 have_cmdline = 1;
2146                                 }
2147                         } /* if (process has argument list) */
2148
2149                         pse.id       = procs[i].p_pid;
2150                         pse.age      = 0;
2151
2152                         pse.num_proc = 1;
2153                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2154
2155                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2156                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2157                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2158                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2159                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2160                         pse.vmem_minflt = 0;
2161                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2162                         pse.vmem_majflt = 0;
2163                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2164
2165                         pse.cpu_user = 0;
2166                         pse.cpu_system = 0;
2167                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2168                                                 (1000000lu * procs[i].p_uutime_sec);
2169                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2170                                                 (1000000lu * procs[i].p_ustime_sec);
2171
2172                         /* no I/O data */
2173                         pse.io_rchar = -1;
2174                         pse.io_wchar = -1;
2175                         pse.io_syscr = -1;
2176                         pse.io_syscw = -1;
2177
2178                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2179                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2180
2181                 switch (procs[i].p_stat)
2182                 {
2183                         case SSTOP:     stopped++;      break;
2184                         case SSLEEP:    sleeping++;     break;
2185                         case SRUN:      running++;      break;
2186                         case SIDL:      idle++;         break;
2187                         case SONPROC:   onproc++;       break;
2188                         case SDEAD:     dead++;         break;
2189                         case SZOMB:     zombies++;      break;
2190                 }
2191         }
2192
2193         kvm_close(kd);
2194
2195         ps_submit_state ("running",  running);
2196         ps_submit_state ("sleeping", sleeping);
2197         ps_submit_state ("zombies",  zombies);
2198         ps_submit_state ("stopped",  stopped);
2199         ps_submit_state ("onproc",   onproc);
2200         ps_submit_state ("idle",     idle);
2201         ps_submit_state ("dead",     dead);
2202
2203         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2204                 ps_submit_proc_list (ps_ptr);
2205 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2206
2207 #elif HAVE_PROCINFO_H
2208         /* AIX */
2209         int running  = 0;
2210         int sleeping = 0;
2211         int zombies  = 0;
2212         int stopped  = 0;
2213         int paging   = 0;
2214         int blocked  = 0;
2215
2216         pid_t pindex = 0;
2217         int nprocs;
2218
2219         procstat_t *ps;
2220         procstat_entry_t pse;
2221
2222         ps_list_reset ();
2223         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2224                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2225                                         &pindex, MAXPROCENTRY)) > 0)
2226         {
2227                 int i;
2228
2229                 for (i = 0; i < nprocs; i++)
2230                 {
2231                         tid64_t thindex;
2232                         int nthreads;
2233                         char arglist[MAXARGLN+1];
2234                         char *cargs;
2235                         char *cmdline;
2236
2237                         if (procentry[i].pi_state == SNONE) continue;
2238                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2239
2240                         cmdline = procentry[i].pi_comm;
2241                         cargs = procentry[i].pi_comm;
2242                         if ( procentry[i].pi_flags & SKPROC )
2243                         {
2244                                 if (procentry[i].pi_pid == 0)
2245                                         cmdline = "swapper";
2246                                 cargs = cmdline;
2247                         }
2248                         else
2249                         {
2250                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2251                                 {
2252                                         int n;
2253
2254                                         n = -1;
2255                                         while (++n < MAXARGLN)
2256                                         {
2257                                                 if (arglist[n] == '\0')
2258                                                 {
2259                                                         if (arglist[n+1] == '\0')
2260                                                                 break;
2261                                                         arglist[n] = ' ';
2262                                                 }
2263                                         }
2264                                         cargs = arglist;
2265                                 }
2266                         }
2267
2268                         pse.id       = procentry[i].pi_pid;
2269                         pse.age      = 0;
2270                         pse.num_lwp  = procentry[i].pi_thcount;
2271                         pse.num_proc = 1;
2272
2273                         thindex=0;
2274                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2275                                                         thrdentry, sizeof(struct thrdentry64),
2276                                                         &thindex, MAXTHRDENTRY)) > 0)
2277                         {
2278                                 int j;
2279
2280                                 for (j=0; j< nthreads; j++)
2281                                 {
2282                                         switch (thrdentry[j].ti_state)
2283                                         {
2284                                                 /* case TSNONE: break; */
2285                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2286                                                 case TSRUN:     running++;      break;
2287                                                 case TSSLEEP:   sleeping++;     break;
2288                                                 case TSSWAP:    paging++;       break;
2289                                                 case TSSTOP:    stopped++;      break;
2290                                                 case TSZOMB:    zombies++;      break;
2291                                         }
2292                                 }
2293                                 if (nthreads < MAXTHRDENTRY)
2294                                         break;
2295                         }
2296
2297                         pse.cpu_user = 0;
2298                         /* tv_usec is nanosec ??? */
2299                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2300                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2301
2302                         pse.cpu_system = 0;
2303                         /* tv_usec is nanosec ??? */
2304                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2305                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2306
2307                         pse.vmem_minflt = 0;
2308                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2309                         pse.vmem_majflt = 0;
2310                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2311
2312                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2313                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2314                         /* Not supported */
2315                         pse.vmem_data = 0;
2316                         pse.vmem_code = 0;
2317                         pse.stack_size =  0;
2318
2319                         pse.io_rchar = -1;
2320                         pse.io_wchar = -1;
2321                         pse.io_syscr = -1;
2322                         pse.io_syscw = -1;
2323
2324                         ps_list_add (cmdline, cargs, &pse);
2325                 } /* for (i = 0 .. nprocs) */
2326
2327                 if (nprocs < MAXPROCENTRY)
2328                         break;
2329         } /* while (getprocs64() > 0) */
2330         ps_submit_state ("running",  running);
2331         ps_submit_state ("sleeping", sleeping);
2332         ps_submit_state ("zombies",  zombies);
2333         ps_submit_state ("stopped",  stopped);
2334         ps_submit_state ("paging",   paging);
2335         ps_submit_state ("blocked",  blocked);
2336
2337         for (ps = list_head_g; ps != NULL; ps = ps->next)
2338                 ps_submit_proc_list (ps);
2339 /* #endif HAVE_PROCINFO_H */
2340
2341 #elif KERNEL_SOLARIS
2342         /*
2343          * The Solaris section adds a few more process states and removes some
2344          * process states compared to linux. Most notably there is no "PAGING"
2345          * and "BLOCKED" state for a process.  The rest is similar to the linux
2346          * code.
2347          */
2348         int running = 0;
2349         int sleeping = 0;
2350         int zombies = 0;
2351         int stopped = 0;
2352         int detached = 0;
2353         int daemon = 0;
2354         int system = 0;
2355         int orphan = 0;
2356
2357         struct dirent *ent;
2358         DIR *proc;
2359
2360         int status;
2361         procstat_t *ps_ptr;
2362         char state;
2363
2364         char cmdline[PRARGSZ];
2365
2366         ps_list_reset ();
2367
2368         proc = opendir ("/proc");
2369         if (proc == NULL)
2370                 return (-1);
2371
2372         while ((ent = readdir(proc)) != NULL)
2373         {
2374                 long pid;
2375                 struct procstat ps;
2376                 procstat_entry_t pse;
2377                 char *endptr;
2378
2379                 if (!isdigit ((int) ent->d_name[0]))
2380                         continue;
2381
2382                 pid = strtol (ent->d_name, &endptr, 10);
2383                 if (*endptr != 0) /* value didn't completely parse as a number */
2384                         continue;
2385
2386                 status = ps_read_process (pid, &ps, &state);
2387                 if (status != 0)
2388                 {
2389                         DEBUG("ps_read_process failed: %i", status);
2390                         continue;
2391                 }
2392
2393                 pse.id = pid;
2394                 pse.age = 0;
2395
2396                 pse.num_proc   = ps.num_proc;
2397                 pse.num_lwp    = ps.num_lwp;
2398                 pse.vmem_size  = ps.vmem_size;
2399                 pse.vmem_rss   = ps.vmem_rss;
2400                 pse.vmem_data  = ps.vmem_data;
2401                 pse.vmem_code  = ps.vmem_code;
2402                 pse.stack_size = ps.stack_size;
2403
2404                 pse.vmem_minflt = 0;
2405                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2406                 pse.vmem_majflt = 0;
2407                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2408
2409                 pse.cpu_user = 0;
2410                 pse.cpu_user_counter = ps.cpu_user_counter;
2411                 pse.cpu_system = 0;
2412                 pse.cpu_system_counter = ps.cpu_system_counter;
2413
2414                 pse.io_rchar = ps.io_rchar;
2415                 pse.io_wchar = ps.io_wchar;
2416                 pse.io_syscr = ps.io_syscr;
2417                 pse.io_syscw = ps.io_syscw;
2418
2419                 switch (state)
2420                 {
2421                         case 'R': running++;  break;
2422                         case 'S': sleeping++; break;
2423                         case 'E': detached++; break;
2424                         case 'Z': zombies++;  break;
2425                         case 'T': stopped++;  break;
2426                         case 'A': daemon++;   break;
2427                         case 'Y': system++;   break;
2428                         case 'O': orphan++;   break;
2429                 }
2430
2431
2432                 ps_list_add (ps.name,
2433                                 ps_get_cmdline (pid, cmdline, sizeof (cmdline)),
2434                                 &pse);
2435         } /* while(readdir) */
2436         closedir (proc);
2437
2438         ps_submit_state ("running",  running);
2439         ps_submit_state ("sleeping", sleeping);
2440         ps_submit_state ("zombies",  zombies);
2441         ps_submit_state ("stopped",  stopped);
2442         ps_submit_state ("detached", detached);
2443         ps_submit_state ("daemon",   daemon);
2444         ps_submit_state ("system",   system);
2445         ps_submit_state ("orphan",   orphan);
2446
2447         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2448                 ps_submit_proc_list (ps_ptr);
2449
2450         read_fork_rate();
2451 #endif /* KERNEL_SOLARIS */
2452
2453         return (0);
2454 } /* int ps_read */
2455
2456 void module_register (void)
2457 {
2458         plugin_register_complex_config ("processes", ps_config);
2459         plugin_register_init ("processes", ps_init);
2460         plugin_register_read ("processes", ps_read);
2461 } /* void module_register */