src/processes.c

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