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                         if ((c->values_num != 1)
 613                                         || (c->values[0].type != OCONFIG_TYPE_BOOLEAN))
 614                         {
 615                                 ERROR ("processes plugin: `CollectContextSwitch' needs exactly "
 616                                                 "one boolean argument.");
 617                                 continue;
 618                         }
 619                         report_ctx_switch = c->values[0].value.boolean ? 1 : 0;
 620                 }
 621                 else
 622                 {
 623                         ERROR ("processes plugin: The `%s' configuration option is not "
 624                                         "understood and will be ignored.", c->key);
 625                         continue;
 626                 }
 627         }
 628
 629         return (0);
 630 }
 631
 632 static int ps_init (void)
 633 {
 634 #if HAVE_THREAD_INFO
 635         kern_return_t status;
 636
 637         port_host_self = mach_host_self ();
 638         port_task_self = mach_task_self ();
 639
 640         if (pset_list != NULL)
 641         {
 642                 vm_deallocate (port_task_self,
 643                                 (vm_address_t) pset_list,
 644                                 pset_list_len * sizeof (processor_set_t));
 645                 pset_list = NULL;
 646                 pset_list_len = 0;
 647         }
 648
 649         if ((status = host_processor_sets (port_host_self,
 650                                         &pset_list,
 651                                         &pset_list_len)) != KERN_SUCCESS)
 652         {
 653                 ERROR ("host_processor_sets failed: %s\n",
 654                                 mach_error_string (status));
 655                 pset_list = NULL;
 656                 pset_list_len = 0;
 657                 return (-1);
 658         }
 659 /* #endif HAVE_THREAD_INFO */
 660
 661 #elif KERNEL_LINUX
 662         pagesize_g = sysconf(_SC_PAGESIZE);
 663         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 664                         pagesize_g, CONFIG_HZ);
 665 /* #endif KERNEL_LINUX */
 666
 667 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 668         pagesize = getpagesize();
 669 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 670
 671 #elif HAVE_PROCINFO_H
 672         pagesize = getpagesize();
 673 #endif /* HAVE_PROCINFO_H */
 674
 675         return (0);
 676 } /* int ps_init */
 677
 678 /* submit global state (e.g.: qty of zombies, running, etc..) */
 679 static void ps_submit_state (const char *state, double value)
 680 {
 681         value_t values[1];
 682         value_list_t vl = VALUE_LIST_INIT;
 683
 684         values[0].gauge = value;
 685
 686         vl.values = values;
 687         vl.values_len = 1;
 688         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 689         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 690         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 691         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 692         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 693
 694         plugin_dispatch_values (&vl);
 695 }
 696
 697 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 698 static void ps_submit_proc_list (procstat_t *ps)
 699 {
 700         value_t values[2];
 701         value_list_t vl = VALUE_LIST_INIT;
 702
 703         vl.values = values;
 704         vl.values_len = 2;
 705         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 706         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 707         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 708
 709         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 710         vl.values[0].gauge = ps->vmem_size;
 711         vl.values_len = 1;
 712         plugin_dispatch_values (&vl);
 713
 714         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 715         vl.values[0].gauge = ps->vmem_rss;
 716         vl.values_len = 1;
 717         plugin_dispatch_values (&vl);
 718
 719         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 720         vl.values[0].gauge = ps->vmem_data;
 721         vl.values_len = 1;
 722         plugin_dispatch_values (&vl);
 723
 724         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 725         vl.values[0].gauge = ps->vmem_code;
 726         vl.values_len = 1;
 727         plugin_dispatch_values (&vl);
 728
 729         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 730         vl.values[0].gauge = ps->stack_size;
 731         vl.values_len = 1;
 732         plugin_dispatch_values (&vl);
 733
 734         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 735         vl.values[0].derive = ps->cpu_user_counter;
 736         vl.values[1].derive = ps->cpu_system_counter;
 737         vl.values_len = 2;
 738         plugin_dispatch_values (&vl);
 739
 740         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 741         vl.values[0].gauge = ps->num_proc;
 742         vl.values[1].gauge = ps->num_lwp;
 743         vl.values_len = 2;
 744         plugin_dispatch_values (&vl);
 745
 746         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 747         vl.values[0].derive = ps->vmem_minflt_counter;
 748         vl.values[1].derive = ps->vmem_majflt_counter;
 749         vl.values_len = 2;
 750         plugin_dispatch_values (&vl);
 751
 752         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 753         {
 754                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 755                 vl.values[0].derive = ps->io_rchar;
 756                 vl.values[1].derive = ps->io_wchar;
 757                 vl.values_len = 2;
 758                 plugin_dispatch_values (&vl);
 759         }
 760
 761         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 762         {
 763                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 764                 vl.values[0].derive = ps->io_syscr;
 765                 vl.values[1].derive = ps->io_syscw;
 766                 vl.values_len = 2;
 767                 plugin_dispatch_values (&vl);
 768         }
 769
 770         if ( report_ctx_switch )
 771         {
 772                 sstrncpy (vl.type, "ps_cswitch_vol", sizeof (vl.type));
 773                 vl.values[0].derive = ps->cswitch_vol;
 774                 vl.values_len = 1;
 775                 plugin_dispatch_values (&vl);
 776
 777                 sstrncpy (vl.type, "ps_cswitch_invol", sizeof (vl.type));
 778                 vl.values[0].derive = ps->cswitch_invol;
 779                 vl.values_len = 1;
 780                 plugin_dispatch_values (&vl);
 781         }
 782
 783         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 784                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 785                         "vmem_code = %lu; "
 786                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 787                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 788                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 789                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 790                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 791                         ps->name, ps->num_proc, ps->num_lwp,
 792                         ps->vmem_size, ps->vmem_rss,
 793                         ps->vmem_data, ps->vmem_code,
 794                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 795                         ps->cpu_user_counter, ps->cpu_system_counter,
 796                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 797                         ps->cswitch_vol, ps->cswitch_invol);
 798 } /* void ps_submit_proc_list */
 799
 800 #if KERNEL_LINUX || KERNEL_SOLARIS
 801 static void ps_submit_fork_rate (derive_t value)
 802 {
 803         value_t values[1];
 804         value_list_t vl = VALUE_LIST_INIT;
 805
 806         values[0].derive = value;
 807
 808         vl.values = values;
 809         vl.values_len = 1;
 810         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 811         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 812         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 813         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 814         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 815
 816         plugin_dispatch_values(&vl);
 817 }
 818 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 819
 820 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 821 #if KERNEL_LINUX
 822 static procstat_t *ps_read_tasks_status (int pid, procstat_t *ps)
 823 {
 824         char           dirname[64];
 825         DIR           *dh;
 826         char           filename[64];
 827         FILE          *fh;
 828         struct dirent *ent;
 829         unsigned long long cswitch_vol = 0;
 830         unsigned long long cswitch_invol = 0;
 831         char buffer[1024];
 832         char *fields[8];
 833         int numfields;
 834
 835         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 836
 837         if ((dh = opendir (dirname)) == NULL)
 838         {
 839                 DEBUG ("Failed to open directory `%s'", dirname);
 840                 return (NULL);
 841         }
 842
 843         while ((ent = readdir (dh)) != NULL)
 844         {
 845                 char *tpid;
 846
 847                 if (!isdigit ((int) ent->d_name[0]))
 848                         continue;
 849
 850                 tpid = ent->d_name;
 851
 852                 ssnprintf (filename, sizeof (filename), "/proc/%i/task/%s/status", pid, tpid);
 853                 if ((fh = fopen (filename, "r")) == NULL)
 854                 {
 855                         DEBUG ("Failed to open file `%s'", filename);
 856                         continue;
 857                 }
 858
 859                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 860                 {
 861                         long long tmp;
 862                         char *endptr;
 863
 864                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 865                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 866                                 continue;
 867
 868                         numfields = strsplit (buffer, fields,
 869                                 STATIC_ARRAY_SIZE (fields));
 870
 871                         if (numfields < 2)
 872                                 continue;
 873
 874                         errno = 0;
 875                         endptr = NULL;
 876                         tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 877                         if ((errno == 0) && (endptr != fields[1]))
 878                         {
 879                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 880                                 {
 881                                         cswitch_vol += tmp;
 882                                 }
 883                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 884                                 {
 885                                         cswitch_invol += tmp;
 886                                 }
 887                         }
 888                 } /* while (fgets) */
 889
 890                 if (fclose (fh))
 891                 {
 892                         char errbuf[1024];
 893                                 WARNING ("processes: fclose: %s",
 894                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 895                 }
 896         }
 897         closedir (dh);
 898
 899         ps->cswitch_vol = cswitch_vol;
 900         ps->cswitch_invol = cswitch_invol;
 901
 902         return (ps);
 903 } /* int *ps_read_tasks_status */
 904
 905 static int ps_read_tasks (int pid)
 906 {
 907         char           dirname[64];
 908         DIR           *dh;
 909         struct dirent *ent;
 910         int count = 0;
 911
 912         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 913
 914         if ((dh = opendir (dirname)) == NULL)
 915         {
 916                 DEBUG ("Failed to open directory `%s'", dirname);
 917                 return (-1);
 918         }
 919
 920         while ((ent = readdir (dh)) != NULL)
 921         {
 922                 if (!isdigit ((int) ent->d_name[0]))
 923                         continue;
 924                 else
 925                         count++;
 926         }
 927         closedir (dh);
 928
 929         return ((count >= 1) ? count : 1);
 930 } /* int *ps_read_tasks */
 931
 932 /* Read advanced virtual memory data from /proc/pid/status */
 933 static procstat_t *ps_read_vmem (int pid, procstat_t *ps)
 934 {
 935         FILE *fh;
 936         char buffer[1024];
 937         char filename[64];
 938         unsigned long long lib = 0;
 939         unsigned long long exe = 0;
 940         unsigned long long data = 0;
 941         char *fields[8];
 942         int numfields;
 943
 944         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 945         if ((fh = fopen (filename, "r")) == NULL)
 946                 return (NULL);
 947
 948         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 949         {
 950                 long long tmp;
 951                 char *endptr;
 952
 953                 if (strncmp (buffer, "Vm", 2) != 0)
 954                         continue;
 955
 956                 numfields = strsplit (buffer, fields,
 957                                 STATIC_ARRAY_SIZE (fields));
 958
 959                 if (numfields < 2)
 960                         continue;
 961
 962                 errno = 0;
 963                 endptr = NULL;
 964                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 965                 if ((errno == 0) && (endptr != fields[1]))
 966                 {
 967                         if (strncmp (buffer, "VmData", 6) == 0)
 968                         {
 969                                 data = tmp;
 970                         }
 971                         else if (strncmp (buffer, "VmLib", 5) == 0)
 972                         {
 973                                 lib = tmp;
 974                         }
 975                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 976                         {
 977                                 exe = tmp;
 978                         }
 979                 }
 980         } /* while (fgets) */
 981
 982         if (fclose (fh))
 983         {
 984                 char errbuf[1024];
 985                 WARNING ("processes: fclose: %s",
 986                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 987         }
 988
 989         ps->vmem_data = data * 1024;
 990         ps->vmem_code = (exe + lib) * 1024;
 991
 992         return (ps);
 993 } /* procstat_t *ps_read_vmem */
 994
 995 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 996 {
 997         FILE *fh;
 998         char buffer[1024];
 999         char filename[64];
1000
1001         char *fields[8];
1002         int numfields;
1003
1004         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
1005         if ((fh = fopen (filename, "r")) == NULL)
1006                 return (NULL);
1007
1008         while (fgets (buffer, sizeof (buffer), fh) != NULL)
1009         {
1010                 derive_t *val = NULL;
1011                 long long tmp;
1012                 char *endptr;
1013
1014                 if (strncasecmp (buffer, "rchar:", 6) == 0)
1015                         val = &(ps->io_rchar);
1016                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
1017                         val = &(ps->io_wchar);
1018                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
1019                         val = &(ps->io_syscr);
1020                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
1021                         val = &(ps->io_syscw);
1022                 else
1023                         continue;
1024
1025                 numfields = strsplit (buffer, fields,
1026                                 STATIC_ARRAY_SIZE (fields));
1027
1028                 if (numfields < 2)
1029                         continue;
1030
1031                 errno = 0;
1032                 endptr = NULL;
1033                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
1034                 if ((errno != 0) || (endptr == fields[1]))
1035                         *val = -1;
1036                 else
1037                         *val = (derive_t) tmp;
1038         } /* while (fgets) */
1039
1040         if (fclose (fh))
1041         {
1042                 char errbuf[1024];
1043                 WARNING ("processes: fclose: %s",
1044                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1045         }
1046
1047         return (ps);
1048 } /* procstat_t *ps_read_io */
1049
1050 int ps_read_process (int pid, procstat_t *ps, char *state)
1051 {
1052         char  filename[64];
1053         char  buffer[1024];
1054
1055         char *fields[64];
1056         char  fields_len;
1057
1058         int   buffer_len;
1059
1060         char *buffer_ptr;
1061         size_t name_start_pos;
1062         size_t name_end_pos;
1063         size_t name_len;
1064
1065         derive_t cpu_user_counter;
1066         derive_t cpu_system_counter;
1067         long long unsigned vmem_size;
1068         long long unsigned vmem_rss;
1069         long long unsigned stack_size;
1070
1071         memset (ps, 0, sizeof (procstat_t));
1072
1073         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
1074
1075         buffer_len = read_file_contents (filename,
1076                         buffer, sizeof(buffer) - 1);
1077         if (buffer_len <= 0)
1078                 return (-1);
1079         buffer[buffer_len] = 0;
1080
1081         /* The name of the process is enclosed in parens. Since the name can
1082          * contain parens itself, spaces, numbers and pretty much everything
1083          * else, use these to determine the process name. We don't use
1084          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1085          * otherwise be required to determine name_len. */
1086         name_start_pos = 0;
1087         while ((buffer[name_start_pos] != '(')
1088                         && (name_start_pos < buffer_len))
1089                 name_start_pos++;
1090
1091         name_end_pos = buffer_len;
1092         while ((buffer[name_end_pos] != ')')
1093                         && (name_end_pos > 0))
1094                 name_end_pos--;
1095
1096         /* Either '(' or ')' is not found or they are in the wrong order.
1097          * Anyway, something weird that shouldn't happen ever. */
1098         if (name_start_pos >= name_end_pos)
1099         {
1100                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1101                                 name_start_pos, name_end_pos);
1102                 return (-1);
1103         }
1104
1105         name_len = (name_end_pos - name_start_pos) - 1;
1106         if (name_len >= sizeof (ps->name))
1107                 name_len = sizeof (ps->name) - 1;
1108
1109         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1110
1111         if ((buffer_len - name_end_pos) < 2)
1112                 return (-1);
1113         buffer_ptr = &buffer[name_end_pos + 2];
1114
1115         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1116         if (fields_len < 22)
1117         {
1118                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
1119                                 " `%s' has only %i fields..",
1120                                 (int) pid, filename, fields_len);
1121                 return (-1);
1122         }
1123
1124         *state = fields[0][0];
1125
1126         if (*state == 'Z')
1127         {
1128                 ps->num_lwp  = 0;
1129                 ps->num_proc = 0;
1130         }
1131         else
1132         {
1133                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
1134                 {
1135                         /* returns -1 => kernel 2.4 */
1136                         ps->num_lwp = 1;
1137                 }
1138                 ps->num_proc = 1;
1139         }
1140
1141         /* Leave the rest at zero if this is only a zombi */
1142         if (ps->num_proc == 0)
1143         {
1144                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
1145                                 "name = %s;", pid, ps->name);
1146                 return (0);
1147         }
1148
1149         cpu_user_counter   = atoll (fields[11]);
1150         cpu_system_counter = atoll (fields[12]);
1151         vmem_size          = atoll (fields[20]);
1152         vmem_rss           = atoll (fields[21]);
1153         ps->vmem_minflt_counter = atol (fields[7]);
1154         ps->vmem_majflt_counter = atol (fields[9]);
1155
1156         {
1157                 unsigned long long stack_start = atoll (fields[25]);
1158                 unsigned long long stack_ptr   = atoll (fields[26]);
1159
1160                 stack_size = (stack_start > stack_ptr)
1161                         ? stack_start - stack_ptr
1162                         : stack_ptr - stack_start;
1163         }
1164
1165         /* Convert jiffies to useconds */
1166         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1167         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1168         vmem_rss = vmem_rss * pagesize_g;
1169
1170         if ( (ps_read_vmem(pid, ps)) == NULL)
1171         {
1172                 /* No VMem data */
1173                 ps->vmem_data = -1;
1174                 ps->vmem_code = -1;
1175                 DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
1176         }
1177
1178         ps->cpu_user_counter = cpu_user_counter;
1179         ps->cpu_system_counter = cpu_system_counter;
1180         ps->vmem_size = (unsigned long) vmem_size;
1181         ps->vmem_rss = (unsigned long) vmem_rss;
1182         ps->stack_size = (unsigned long) stack_size;
1183
1184         if ( (ps_read_io (pid, ps)) == NULL)
1185         {
1186                 /* no io data */
1187                 ps->io_rchar = -1;
1188                 ps->io_wchar = -1;
1189                 ps->io_syscr = -1;
1190                 ps->io_syscw = -1;
1191
1192                 DEBUG("ps_read_process: not get io data for pid %i",pid);
1193         }
1194
1195         if ( report_ctx_switch )
1196         {
1197                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1198                 {
1199                         ps->cswitch_vol = -1;
1200                         ps->cswitch_invol = -1;
1201
1202                         DEBUG("ps_read_tasks_status: not get context "
1203                                         "switch data for pid %i",pid);
1204                 }
1205         }
1206
1207         /* success */
1208         return (0);
1209 } /* int ps_read_process (...) */
1210
1211 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
1212 {
1213         char  *buf_ptr;
1214         size_t len;
1215
1216         char file[PATH_MAX];
1217         int  fd;
1218
1219         size_t n;
1220
1221         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1222                 return NULL;
1223
1224         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1225                         (unsigned int) pid);
1226
1227         errno = 0;
1228         fd = open (file, O_RDONLY);
1229         if (fd < 0) {
1230                 char errbuf[4096];
1231                 /* ENOENT means the process exited while we were handling it.
1232                  * Don't complain about this, it only fills the logs. */
1233                 if (errno != ENOENT)
1234                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1235                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1236                 return NULL;
1237         }
1238
1239         buf_ptr = buf;
1240         len     = buf_len;
1241
1242         n = 0;
1243
1244         while (42) {
1245                 ssize_t status;
1246
1247                 status = read (fd, (void *)buf_ptr, len);
1248
1249                 if (status < 0) {
1250                         char errbuf[1024];
1251
1252                         if ((EAGAIN == errno) || (EINTR == errno))
1253                                 continue;
1254
1255                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1256                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1257                         close (fd);
1258                         return NULL;
1259                 }
1260
1261                 n += status;
1262
1263                 if (status == 0)
1264                         break;
1265
1266                 buf_ptr += status;
1267                 len     -= status;
1268
1269                 if (len <= 0)
1270                         break;
1271         }
1272
1273         close (fd);
1274
1275         if (0 == n) {
1276                 /* cmdline not available; e.g. kernel thread, zombie */
1277                 if (NULL == name)
1278                         return NULL;
1279
1280                 ssnprintf (buf, buf_len, "[%s]", name);
1281                 return buf;
1282         }
1283
1284         assert (n <= buf_len);
1285
1286         if (n == buf_len)
1287                 --n;
1288         buf[n] = '\0';
1289
1290         --n;
1291         /* remove trailing whitespace */
1292         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1293                 buf[n] = '\0';
1294                 --n;
1295         }
1296
1297         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1298         while (n > 0) {
1299                 if ('\0' == buf[n])
1300                         buf[n] = ' ';
1301                 --n;
1302         }
1303         return buf;
1304 } /* char *ps_get_cmdline (...) */
1305
1306 static int read_fork_rate ()
1307 {
1308         FILE *proc_stat;
1309         char buffer[1024];
1310         value_t value;
1311         _Bool value_valid = 0;
1312
1313         proc_stat = fopen ("/proc/stat", "r");
1314         if (proc_stat == NULL)
1315         {
1316                 char errbuf[1024];
1317                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1318                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1319                 return (-1);
1320         }
1321
1322         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1323         {
1324                 int status;
1325                 char *fields[3];
1326                 int fields_num;
1327
1328                 fields_num = strsplit (buffer, fields,
1329                                 STATIC_ARRAY_SIZE (fields));
1330                 if (fields_num != 2)
1331                         continue;
1332
1333                 if (strcmp ("processes", fields[0]) != 0)
1334                         continue;
1335
1336                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1337                 if (status == 0)
1338                         value_valid = 1;
1339
1340                 break;
1341         }
1342         fclose(proc_stat);
1343
1344         if (!value_valid)
1345                 return (-1);
1346
1347         ps_submit_fork_rate (value.derive);
1348         return (0);
1349 }
1350 #endif /*KERNEL_LINUX */
1351
1352 #if KERNEL_SOLARIS
1353 static const char *ps_get_cmdline (long pid, /* {{{ */
1354                 char *buffer, size_t buffer_size)
1355 {
1356         char path[PATH_MAX];
1357         psinfo_t info;
1358         int status;
1359
1360         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1361
1362         status = read_file_contents (path, (void *) &info, sizeof (info));
1363         if (status != sizeof (info))
1364         {
1365                 ERROR ("processes plugin: Unexpected return value "
1366                                 "while reading \"%s\": "
1367                                 "Returned %i but expected %zu.",
1368                                 path, status, buffer_size);
1369                 return (NULL);
1370         }
1371
1372         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1373         sstrncpy (buffer, info.pr_psargs, buffer_size);
1374
1375         return (buffer);
1376 } /* }}} int ps_get_cmdline */
1377
1378 /*
1379  * Reads process information on the Solaris OS. The information comes mainly from
1380  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1381  * The values for input and ouput chars are calculated "by hand"
1382  * Added a few "solaris" specific process states as well
1383  */
1384 static int ps_read_process(long pid, procstat_t *ps, char *state)
1385 {
1386         char filename[64];
1387         char f_psinfo[64], f_usage[64];
1388         char *buffer;
1389
1390         pstatus_t *myStatus;
1391         psinfo_t *myInfo;
1392         prusage_t *myUsage;
1393
1394         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1395         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1396         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1397
1398
1399         buffer = malloc(sizeof (pstatus_t));
1400         memset(buffer, 0, sizeof (pstatus_t));
1401         read_file_contents(filename, buffer, sizeof (pstatus_t));
1402         myStatus = (pstatus_t *) buffer;
1403
1404         buffer = malloc(sizeof (psinfo_t));
1405         memset(buffer, 0, sizeof(psinfo_t));
1406         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1407         myInfo = (psinfo_t *) buffer;
1408
1409         buffer = malloc(sizeof (prusage_t));
1410         memset(buffer, 0, sizeof(prusage_t));
1411         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1412         myUsage = (prusage_t *) buffer;
1413
1414         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1415         ps->num_lwp = myStatus->pr_nlwp;
1416         if (myInfo->pr_wstat != 0) {
1417                 ps->num_proc = 0;
1418                 ps->num_lwp = 0;
1419                 *state = (char) 'Z';
1420                 return (0);
1421         } else {
1422                 ps->num_proc = 1;
1423                 ps->num_lwp = myInfo->pr_nlwp;
1424         }
1425
1426         /*
1427          * Convert system time and user time from nanoseconds to microseconds
1428          * for compatibility with the linux module
1429          */
1430         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1431         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1432
1433         /*
1434          * Convert rssize from KB to bytes to be consistent w/ the linux module
1435          */
1436         ps->vmem_rss = myInfo->pr_rssize * 1024;
1437         ps->vmem_size = myInfo->pr_size * 1024;
1438         ps->vmem_minflt_counter = myUsage->pr_minf;
1439         ps->vmem_majflt_counter = myUsage->pr_majf;
1440
1441         /*
1442          * TODO: Data and code segment calculations for Solaris
1443          */
1444
1445         ps->vmem_data = -1;
1446         ps->vmem_code = -1;
1447         ps->stack_size = myStatus->pr_stksize;
1448
1449         /*
1450          * Calculating input/ouput chars
1451          * Formula used is total chars / total blocks => chars/block
1452          * then convert input/output blocks to chars
1453          */
1454         ulong_t tot_chars = myUsage->pr_ioch;
1455         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1456         ulong_t chars_per_block = 1;
1457         if (tot_blocks != 0)
1458                 chars_per_block = tot_chars / tot_blocks;
1459         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1460         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1461         ps->io_syscr = myUsage->pr_sysc;
1462         ps->io_syscw = myUsage->pr_sysc;
1463
1464
1465         /*
1466          * TODO: Find way of setting BLOCKED and PAGING status
1467          */
1468
1469         *state = (char) 'R';
1470         if (myStatus->pr_flags & PR_ASLEEP)
1471                 *state = (char) 'S';
1472         else if (myStatus->pr_flags & PR_STOPPED)
1473                 *state = (char) 'T';
1474         else if (myStatus->pr_flags & PR_DETACH)
1475                 *state = (char) 'E';
1476         else if (myStatus->pr_flags & PR_DAEMON)
1477                 *state = (char) 'A';
1478         else if (myStatus->pr_flags & PR_ISSYS)
1479                 *state = (char) 'Y';
1480         else if (myStatus->pr_flags & PR_ORPHAN)
1481                 *state = (char) 'O';
1482
1483         sfree(myStatus);
1484         sfree(myInfo);
1485         sfree(myUsage);
1486
1487         return (0);
1488 }
1489
1490 /*
1491  * Reads the number of threads created since the last reboot. On Solaris these
1492  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1493  * The result is the sum for all the threads created on each cpu
1494  */
1495 static int read_fork_rate()
1496 {
1497         extern kstat_ctl_t *kc;
1498         kstat_t *ksp_chain = NULL;
1499         derive_t result = 0;
1500
1501         if (kc == NULL)
1502                 return (-1);
1503
1504         for (ksp_chain = kc->kc_chain;
1505                         ksp_chain != NULL;
1506                         ksp_chain = ksp_chain->ks_next)
1507         {
1508                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1509                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1510                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1511                 {
1512                         long long tmp;
1513
1514                         kstat_read (kc, ksp_chain, NULL);
1515
1516                         tmp = get_kstat_value(ksp_chain, "nthreads");
1517                         if (tmp != -1LL)
1518                                 result += tmp;
1519                 }
1520         }
1521
1522         ps_submit_fork_rate (result);
1523         return (0);
1524 }
1525 #endif /* KERNEL_SOLARIS */
1526
1527 #if HAVE_THREAD_INFO
1528 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1529 {
1530         int mib[4];
1531
1532         struct kinfo_proc kp;
1533         size_t            kp_size;
1534
1535         mib[0] = CTL_KERN;
1536         mib[1] = KERN_PROC;
1537         mib[2] = KERN_PROC_PID;
1538
1539         if (pid_for_task (t, pid) != KERN_SUCCESS)
1540                 return (-1);
1541         mib[3] = *pid;
1542
1543         kp_size = sizeof (kp);
1544         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1545                 return (-1);
1546
1547         if (name_max_len > (MAXCOMLEN + 1))
1548                 name_max_len = MAXCOMLEN + 1;
1549
1550         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1551         name[name_max_len - 1] = '\0';
1552
1553         DEBUG ("pid = %i; name = %s;", *pid, name);
1554
1555         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1556          * `top' does it, because it is a lot of work and only used when
1557          * debugging. -octo */
1558
1559         return (0);
1560 }
1561 #endif /* HAVE_THREAD_INFO */
1562 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1563
1564 /* do actual readings from kernel */
1565 static int ps_read (void)
1566 {
1567 #if HAVE_THREAD_INFO
1568         kern_return_t            status;
1569
1570         int                      pset;
1571         processor_set_t          port_pset_priv;
1572
1573         int                      task;
1574         task_array_t             task_list;
1575         mach_msg_type_number_t   task_list_len;
1576
1577         int                      task_pid;
1578         char                     task_name[MAXCOMLEN + 1];
1579
1580         int                      thread;
1581         thread_act_array_t       thread_list;
1582         mach_msg_type_number_t   thread_list_len;
1583         thread_basic_info_data_t thread_data;
1584         mach_msg_type_number_t   thread_data_len;
1585
1586         int running  = 0;
1587         int sleeping = 0;
1588         int zombies  = 0;
1589         int stopped  = 0;
1590         int blocked  = 0;
1591
1592         procstat_t *ps;
1593         procstat_entry_t pse;
1594
1595         ps_list_reset ();
1596
1597         /*
1598          * The Mach-concept is a little different from the traditional UNIX
1599          * concept: All the work is done in threads. Threads are contained in
1600          * `tasks'. Therefore, `task status' doesn't make much sense, since
1601          * it's actually a `thread status'.
1602          * Tasks are assigned to sets of processors, so that's where you go to
1603          * get a list.
1604          */
1605         for (pset = 0; pset < pset_list_len; pset++)
1606         {
1607                 if ((status = host_processor_set_priv (port_host_self,
1608                                                 pset_list[pset],
1609                                                 &port_pset_priv)) != KERN_SUCCESS)
1610                 {
1611                         ERROR ("host_processor_set_priv failed: %s\n",
1612                                         mach_error_string (status));
1613                         continue;
1614                 }
1615
1616                 if ((status = processor_set_tasks (port_pset_priv,
1617                                                 &task_list,
1618                                                 &task_list_len)) != KERN_SUCCESS)
1619                 {
1620                         ERROR ("processor_set_tasks failed: %s\n",
1621                                         mach_error_string (status));
1622                         mach_port_deallocate (port_task_self, port_pset_priv);
1623                         continue;
1624                 }
1625
1626                 for (task = 0; task < task_list_len; task++)
1627                 {
1628                         ps = NULL;
1629                         if (mach_get_task_name (task_list[task],
1630                                                 &task_pid,
1631                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1632                         {
1633                                 /* search for at least one match */
1634                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1635                                         /* FIXME: cmdline should be here instead of NULL */
1636                                         if (ps_list_match (task_name, NULL, ps) == 1)
1637                                                 break;
1638                         }
1639
1640                         /* Collect more detailed statistics for this process */
1641                         if (ps != NULL)
1642                         {
1643                                 task_basic_info_data_t        task_basic_info;
1644                                 mach_msg_type_number_t        task_basic_info_len;
1645                                 task_events_info_data_t       task_events_info;
1646                                 mach_msg_type_number_t        task_events_info_len;
1647                                 task_absolutetime_info_data_t task_absolutetime_info;
1648                                 mach_msg_type_number_t        task_absolutetime_info_len;
1649
1650                                 memset (&pse, '\0', sizeof (pse));
1651                                 pse.id = task_pid;
1652
1653                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1654                                 status = task_info (task_list[task],
1655                                                 TASK_BASIC_INFO,
1656                                                 (task_info_t) &task_basic_info,
1657                                                 &task_basic_info_len);
1658                                 if (status != KERN_SUCCESS)
1659                                 {
1660                                         ERROR ("task_info failed: %s",
1661                                                         mach_error_string (status));
1662                                         continue; /* with next thread_list */
1663                                 }
1664
1665                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1666                                 status = task_info (task_list[task],
1667                                                 TASK_EVENTS_INFO,
1668                                                 (task_info_t) &task_events_info,
1669                                                 &task_events_info_len);
1670                                 if (status != KERN_SUCCESS)
1671                                 {
1672                                         ERROR ("task_info failed: %s",
1673                                                         mach_error_string (status));
1674                                         continue; /* with next thread_list */
1675                                 }
1676
1677                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1678                                 status = task_info (task_list[task],
1679                                                 TASK_ABSOLUTETIME_INFO,
1680                                                 (task_info_t) &task_absolutetime_info,
1681                                                 &task_absolutetime_info_len);
1682                                 if (status != KERN_SUCCESS)
1683                                 {
1684                                         ERROR ("task_info failed: %s",
1685                                                         mach_error_string (status));
1686                                         continue; /* with next thread_list */
1687                                 }
1688
1689                                 pse.num_proc++;
1690                                 pse.vmem_size = task_basic_info.virtual_size;
1691                                 pse.vmem_rss = task_basic_info.resident_size;
1692                                 /* Does not seem to be easily exposed */
1693                                 pse.vmem_data = 0;
1694                                 pse.vmem_code = 0;
1695
1696                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1697                                 pse.vmem_majflt_counter = task_events_info.faults;
1698
1699                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1700                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1701                         }
1702
1703                         status = task_threads (task_list[task], &thread_list,
1704                                         &thread_list_len);
1705                         if (status != KERN_SUCCESS)
1706                         {
1707                                 /* Apple's `top' treats this case a zombie. It
1708                                  * makes sense to some extend: A `zombie'
1709                                  * thread is nonsense, since the task/process
1710                                  * is dead. */
1711                                 zombies++;
1712                                 DEBUG ("task_threads failed: %s",
1713                                                 mach_error_string (status));
1714                                 if (task_list[task] != port_task_self)
1715                                         mach_port_deallocate (port_task_self,
1716                                                         task_list[task]);
1717                                 continue; /* with next task_list */
1718                         }
1719
1720                         for (thread = 0; thread < thread_list_len; thread++)
1721                         {
1722                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1723                                 status = thread_info (thread_list[thread],
1724                                                 THREAD_BASIC_INFO,
1725                                                 (thread_info_t) &thread_data,
1726                                                 &thread_data_len);
1727                                 if (status != KERN_SUCCESS)
1728                                 {
1729                                         ERROR ("thread_info failed: %s",
1730                                                         mach_error_string (status));
1731                                         if (task_list[task] != port_task_self)
1732                                                 mach_port_deallocate (port_task_self,
1733                                                                 thread_list[thread]);
1734                                         continue; /* with next thread_list */
1735                                 }
1736
1737                                 if (ps != NULL)
1738                                         pse.num_lwp++;
1739
1740                                 switch (thread_data.run_state)
1741                                 {
1742                                         case TH_STATE_RUNNING:
1743                                                 running++;
1744                                                 break;
1745                                         case TH_STATE_STOPPED:
1746                                         /* What exactly is `halted'? */
1747                                         case TH_STATE_HALTED:
1748                                                 stopped++;
1749                                                 break;
1750                                         case TH_STATE_WAITING:
1751                                                 sleeping++;
1752                                                 break;
1753                                         case TH_STATE_UNINTERRUPTIBLE:
1754                                                 blocked++;
1755                                                 break;
1756                                         /* There is no `zombie' case here,
1757                                          * since there are no zombie-threads.
1758                                          * There's only zombie tasks, which are
1759                                          * handled above. */
1760                                         default:
1761                                                 WARNING ("Unknown thread status: %i",
1762                                                                 thread_data.run_state);
1763                                                 break;
1764                                 } /* switch (thread_data.run_state) */
1765
1766                                 if (task_list[task] != port_task_self)
1767                                 {
1768                                         status = mach_port_deallocate (port_task_self,
1769                                                         thread_list[thread]);
1770                                         if (status != KERN_SUCCESS)
1771                                                 ERROR ("mach_port_deallocate failed: %s",
1772                                                                 mach_error_string (status));
1773                                 }
1774                         } /* for (thread_list) */
1775
1776                         if ((status = vm_deallocate (port_task_self,
1777                                                         (vm_address_t) thread_list,
1778                                                         thread_list_len * sizeof (thread_act_t)))
1779                                         != KERN_SUCCESS)
1780                         {
1781                                 ERROR ("vm_deallocate failed: %s",
1782                                                 mach_error_string (status));
1783                         }
1784                         thread_list = NULL;
1785                         thread_list_len = 0;
1786
1787                         /* Only deallocate the task port, if it isn't our own.
1788                          * Don't know what would happen in that case, but this
1789                          * is what Apple's top does.. ;) */
1790                         if (task_list[task] != port_task_self)
1791                         {
1792                                 status = mach_port_deallocate (port_task_self,
1793                                                 task_list[task]);
1794                                 if (status != KERN_SUCCESS)
1795                                         ERROR ("mach_port_deallocate failed: %s",
1796                                                         mach_error_string (status));
1797                         }
1798
1799                         if (ps != NULL)
1800                                 /* FIXME: cmdline should be here instead of NULL */
1801                                 ps_list_add (task_name, NULL, &pse);
1802                 } /* for (task_list) */
1803
1804                 if ((status = vm_deallocate (port_task_self,
1805                                 (vm_address_t) task_list,
1806                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1807                 {
1808                         ERROR ("vm_deallocate failed: %s",
1809                                         mach_error_string (status));
1810                 }
1811                 task_list = NULL;
1812                 task_list_len = 0;
1813
1814                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1815                                 != KERN_SUCCESS)
1816                 {
1817                         ERROR ("mach_port_deallocate failed: %s",
1818                                         mach_error_string (status));
1819                 }
1820         } /* for (pset_list) */
1821
1822         ps_submit_state ("running", running);
1823         ps_submit_state ("sleeping", sleeping);
1824         ps_submit_state ("zombies", zombies);
1825         ps_submit_state ("stopped", stopped);
1826         ps_submit_state ("blocked", blocked);
1827
1828         for (ps = list_head_g; ps != NULL; ps = ps->next)
1829                 ps_submit_proc_list (ps);
1830 /* #endif HAVE_THREAD_INFO */
1831
1832 #elif KERNEL_LINUX
1833         int running  = 0;
1834         int sleeping = 0;
1835         int zombies  = 0;
1836         int stopped  = 0;
1837         int paging   = 0;
1838         int blocked  = 0;
1839
1840         struct dirent *ent;
1841         DIR           *proc;
1842         int            pid;
1843
1844         char cmdline[CMDLINE_BUFFER_SIZE];
1845
1846         int        status;
1847         procstat_t ps;
1848         procstat_entry_t pse;
1849         char       state;
1850
1851         procstat_t *ps_ptr;
1852
1853         running = sleeping = zombies = stopped = paging = blocked = 0;
1854         ps_list_reset ();
1855
1856         if ((proc = opendir ("/proc")) == NULL)
1857         {
1858                 char errbuf[1024];
1859                 ERROR ("Cannot open `/proc': %s",
1860                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1861                 return (-1);
1862         }
1863
1864         while ((ent = readdir (proc)) != NULL)
1865         {
1866                 if (!isdigit (ent->d_name[0]))
1867                         continue;
1868
1869                 if ((pid = atoi (ent->d_name)) < 1)
1870                         continue;
1871
1872                 status = ps_read_process (pid, &ps, &state);
1873                 if (status != 0)
1874                 {
1875                         DEBUG ("ps_read_process failed: %i", status);
1876                         continue;
1877                 }
1878
1879                 pse.id       = pid;
1880                 pse.age      = 0;
1881
1882                 pse.num_proc   = ps.num_proc;
1883                 pse.num_lwp    = ps.num_lwp;
1884                 pse.vmem_size  = ps.vmem_size;
1885                 pse.vmem_rss   = ps.vmem_rss;
1886                 pse.vmem_data  = ps.vmem_data;
1887                 pse.vmem_code  = ps.vmem_code;
1888                 pse.stack_size = ps.stack_size;
1889
1890                 pse.vmem_minflt = 0;
1891                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1892                 pse.vmem_majflt = 0;
1893                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1894
1895                 pse.cpu_user = 0;
1896                 pse.cpu_user_counter = ps.cpu_user_counter;
1897                 pse.cpu_system = 0;
1898                 pse.cpu_system_counter = ps.cpu_system_counter;
1899
1900                 pse.io_rchar = ps.io_rchar;
1901                 pse.io_wchar = ps.io_wchar;
1902                 pse.io_syscr = ps.io_syscr;
1903                 pse.io_syscw = ps.io_syscw;
1904
1905                 pse.cswitch_vol = ps.cswitch_vol;
1906                 pse.cswitch_invol = ps.cswitch_invol;
1907
1908                 switch (state)
1909                 {
1910                         case 'R': running++;  break;
1911                         case 'S': sleeping++; break;
1912                         case 'D': blocked++;  break;
1913                         case 'Z': zombies++;  break;
1914                         case 'T': stopped++;  break;
1915                         case 'W': paging++;   break;
1916                 }
1917
1918                 ps_list_add (ps.name,
1919                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1920                                 &pse);
1921         }
1922
1923         closedir (proc);
1924
1925         ps_submit_state ("running",  running);
1926         ps_submit_state ("sleeping", sleeping);
1927         ps_submit_state ("zombies",  zombies);
1928         ps_submit_state ("stopped",  stopped);
1929         ps_submit_state ("paging",   paging);
1930         ps_submit_state ("blocked",  blocked);
1931
1932         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1933                 ps_submit_proc_list (ps_ptr);
1934
1935         read_fork_rate();
1936 /* #endif KERNEL_LINUX */
1937
1938 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1939         int running  = 0;
1940         int sleeping = 0;
1941         int zombies  = 0;
1942         int stopped  = 0;
1943         int blocked  = 0;
1944         int idle     = 0;
1945         int wait     = 0;
1946
1947         kvm_t *kd;
1948         char errbuf[_POSIX2_LINE_MAX];
1949         struct kinfo_proc *procs;          /* array of processes */
1950         struct kinfo_proc *proc_ptr = NULL;
1951         int count;                         /* returns number of processes */
1952         int i;
1953
1954         procstat_t *ps_ptr;
1955         procstat_entry_t pse;
1956
1957         ps_list_reset ();
1958
1959         /* Open the kvm interface, get a descriptor */
1960         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1961         if (kd == NULL)
1962         {
1963                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1964                                 errbuf);
1965                 return (0);
1966         }
1967
1968         /* Get the list of processes. */
1969         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1970         if (procs == NULL)
1971         {
1972                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1973                                 kvm_geterr(kd));
1974                 kvm_close (kd);
1975                 return (0);
1976         }
1977
1978         /* Iterate through the processes in kinfo_proc */
1979         for (i = 0; i < count; i++)
1980         {
1981                 /* Create only one process list entry per _process_, i.e.
1982                  * filter out threads (duplicate PID entries). */
1983                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1984                 {
1985                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1986                         _Bool have_cmdline = 0;
1987
1988                         proc_ptr = &(procs[i]);
1989                         /* Don't probe system processes and processes without arguments */
1990                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1991                                         && (procs[i].ki_args != NULL))
1992                         {
1993                                 char **argv;
1994                                 int argc;
1995                                 int status;
1996
1997                                 /* retrieve the arguments */
1998                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1999                                 argc = 0;
2000                                 if ((argv != NULL) && (argv[0] != NULL))
2001                                 {
2002                                         while (argv[argc] != NULL)
2003                                                 argc++;
2004
2005                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2006                                         if (status < 0)
2007                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2008                                         else
2009                                                 have_cmdline = 1;
2010                                 }
2011                         } /* if (process has argument list) */
2012
2013                         pse.id       = procs[i].ki_pid;
2014                         pse.age      = 0;
2015
2016                         pse.num_proc = 1;
2017                         pse.num_lwp  = procs[i].ki_numthreads;
2018
2019                         pse.vmem_size = procs[i].ki_size;
2020                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
2021                         pse.vmem_data = procs[i].ki_dsize * pagesize;
2022                         pse.vmem_code = procs[i].ki_tsize * pagesize;
2023                         pse.stack_size = procs[i].ki_ssize * pagesize;
2024                         pse.vmem_minflt = 0;
2025                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
2026                         pse.vmem_majflt = 0;
2027                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
2028
2029                         pse.cpu_user = 0;
2030                         pse.cpu_system = 0;
2031                         pse.cpu_user_counter = 0;
2032                         pse.cpu_system_counter = 0;
2033                         /*
2034                          * The u-area might be swapped out, and we can't get
2035                          * at it because we have a crashdump and no swap.
2036                          * If it's here fill in these fields, otherwise, just
2037                          * leave them 0.
2038                          */
2039                         if (procs[i].ki_flag & P_INMEM)
2040                         {
2041                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2042                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2043                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2044                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2045                         }
2046
2047                         /* no I/O data */
2048                         pse.io_rchar = -1;
2049                         pse.io_wchar = -1;
2050                         pse.io_syscr = -1;
2051                         pse.io_syscw = -1;
2052
2053                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2054                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2055
2056                 switch (procs[i].ki_stat)
2057                 {
2058                         case SSTOP:     stopped++;      break;
2059                         case SSLEEP:    sleeping++;     break;
2060                         case SRUN:      running++;      break;
2061                         case SIDL:      idle++;         break;
2062                         case SWAIT:     wait++;         break;
2063                         case SLOCK:     blocked++;      break;
2064                         case SZOMB:     zombies++;      break;
2065                 }
2066         }
2067
2068         kvm_close(kd);
2069
2070         ps_submit_state ("running",  running);
2071         ps_submit_state ("sleeping", sleeping);
2072         ps_submit_state ("zombies",  zombies);
2073         ps_submit_state ("stopped",  stopped);
2074         ps_submit_state ("blocked",  blocked);
2075         ps_submit_state ("idle",     idle);
2076         ps_submit_state ("wait",     wait);
2077
2078         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2079                 ps_submit_proc_list (ps_ptr);
2080 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2081
2082 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2083         int running  = 0;
2084         int sleeping = 0;
2085         int zombies  = 0;
2086         int stopped  = 0;
2087         int onproc   = 0;
2088         int idle     = 0;
2089         int dead     = 0;
2090
2091         kvm_t *kd;
2092         char errbuf[1024];
2093         struct kinfo_proc *procs;          /* array of processes */
2094         struct kinfo_proc *proc_ptr = NULL;
2095         int count;                         /* returns number of processes */
2096         int i;
2097
2098         procstat_t *ps_ptr;
2099         procstat_entry_t pse;
2100
2101         ps_list_reset ();
2102
2103         /* Open the kvm interface, get a descriptor */
2104         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2105         if (kd == NULL)
2106         {
2107                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2108                                 errbuf);
2109                 return (0);
2110         }
2111
2112         /* Get the list of processes. */
2113         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2114         if (procs == NULL)
2115         {
2116                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2117                                 kvm_geterr(kd));
2118                 kvm_close (kd);
2119                 return (0);
2120         }
2121
2122         /* Iterate through the processes in kinfo_proc */
2123         for (i = 0; i < count; i++)
2124         {
2125                 /* Create only one process list entry per _process_, i.e.
2126                  * filter out threads (duplicate PID entries). */
2127                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2128                 {
2129                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2130                         _Bool have_cmdline = 0;
2131
2132                         proc_ptr = &(procs[i]);
2133                         /* Don't probe zombie processes  */
2134                         if (!P_ZOMBIE(proc_ptr))
2135                         {
2136                                 char **argv;
2137                                 int argc;
2138                                 int status;
2139
2140                                 /* retrieve the arguments */
2141                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2142                                 argc = 0;
2143                                 if ((argv != NULL) && (argv[0] != NULL))
2144                                 {
2145                                         while (argv[argc] != NULL)
2146                                                 argc++;
2147
2148                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2149                                         if (status < 0)
2150                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2151                                         else
2152                                                 have_cmdline = 1;
2153                                 }
2154                         } /* if (process has argument list) */
2155
2156                         pse.id       = procs[i].p_pid;
2157                         pse.age      = 0;
2158
2159                         pse.num_proc = 1;
2160                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2161
2162                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2163                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2164                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2165                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2166                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2167                         pse.vmem_minflt = 0;
2168                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2169                         pse.vmem_majflt = 0;
2170                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2171
2172                         pse.cpu_user = 0;
2173                         pse.cpu_system = 0;
2174                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2175                                                 (1000000lu * procs[i].p_uutime_sec);
2176                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2177                                                 (1000000lu * procs[i].p_ustime_sec);
2178
2179                         /* no I/O data */
2180                         pse.io_rchar = -1;
2181                         pse.io_wchar = -1;
2182                         pse.io_syscr = -1;
2183                         pse.io_syscw = -1;
2184
2185                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2186                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2187
2188                 switch (procs[i].p_stat)
2189                 {
2190                         case SSTOP:     stopped++;      break;
2191                         case SSLEEP:    sleeping++;     break;
2192                         case SRUN:      running++;      break;
2193                         case SIDL:      idle++;         break;
2194                         case SONPROC:   onproc++;       break;
2195                         case SDEAD:     dead++;         break;
2196                         case SZOMB:     zombies++;      break;
2197                 }
2198         }
2199
2200         kvm_close(kd);
2201
2202         ps_submit_state ("running",  running);
2203         ps_submit_state ("sleeping", sleeping);
2204         ps_submit_state ("zombies",  zombies);
2205         ps_submit_state ("stopped",  stopped);
2206         ps_submit_state ("onproc",   onproc);
2207         ps_submit_state ("idle",     idle);
2208         ps_submit_state ("dead",     dead);
2209
2210         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2211                 ps_submit_proc_list (ps_ptr);
2212 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2213
2214 #elif HAVE_PROCINFO_H
2215         /* AIX */
2216         int running  = 0;
2217         int sleeping = 0;
2218         int zombies  = 0;
2219         int stopped  = 0;
2220         int paging   = 0;
2221         int blocked  = 0;
2222
2223         pid_t pindex = 0;
2224         int nprocs;
2225
2226         procstat_t *ps;
2227         procstat_entry_t pse;
2228
2229         ps_list_reset ();
2230         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2231                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2232                                         &pindex, MAXPROCENTRY)) > 0)
2233         {
2234                 int i;
2235
2236                 for (i = 0; i < nprocs; i++)
2237                 {
2238                         tid64_t thindex;
2239                         int nthreads;
2240                         char arglist[MAXARGLN+1];
2241                         char *cargs;
2242                         char *cmdline;
2243
2244                         if (procentry[i].pi_state == SNONE) continue;
2245                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2246
2247                         cmdline = procentry[i].pi_comm;
2248                         cargs = procentry[i].pi_comm;
2249                         if ( procentry[i].pi_flags & SKPROC )
2250                         {
2251                                 if (procentry[i].pi_pid == 0)
2252                                         cmdline = "swapper";
2253                                 cargs = cmdline;
2254                         }
2255                         else
2256                         {
2257                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2258                                 {
2259                                         int n;
2260
2261                                         n = -1;
2262                                         while (++n < MAXARGLN)
2263                                         {
2264                                                 if (arglist[n] == '\0')
2265                                                 {
2266                                                         if (arglist[n+1] == '\0')
2267                                                                 break;
2268                                                         arglist[n] = ' ';
2269                                                 }
2270                                         }
2271                                         cargs = arglist;
2272                                 }
2273                         }
2274
2275                         pse.id       = procentry[i].pi_pid;
2276                         pse.age      = 0;
2277                         pse.num_lwp  = procentry[i].pi_thcount;
2278                         pse.num_proc = 1;
2279
2280                         thindex=0;
2281                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2282                                                         thrdentry, sizeof(struct thrdentry64),
2283                                                         &thindex, MAXTHRDENTRY)) > 0)
2284                         {
2285                                 int j;
2286
2287                                 for (j=0; j< nthreads; j++)
2288                                 {
2289                                         switch (thrdentry[j].ti_state)
2290                                         {
2291                                                 /* case TSNONE: break; */
2292                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2293                                                 case TSRUN:     running++;      break;
2294                                                 case TSSLEEP:   sleeping++;     break;
2295                                                 case TSSWAP:    paging++;       break;
2296                                                 case TSSTOP:    stopped++;      break;
2297                                                 case TSZOMB:    zombies++;      break;
2298                                         }
2299                                 }
2300                                 if (nthreads < MAXTHRDENTRY)
2301                                         break;
2302                         }
2303
2304                         pse.cpu_user = 0;
2305                         /* tv_usec is nanosec ??? */
2306                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2307                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2308
2309                         pse.cpu_system = 0;
2310                         /* tv_usec is nanosec ??? */
2311                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2312                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2313
2314                         pse.vmem_minflt = 0;
2315                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2316                         pse.vmem_majflt = 0;
2317                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2318
2319                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2320                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2321                         /* Not supported */
2322                         pse.vmem_data = 0;
2323                         pse.vmem_code = 0;
2324                         pse.stack_size =  0;
2325
2326                         pse.io_rchar = -1;
2327                         pse.io_wchar = -1;
2328                         pse.io_syscr = -1;
2329                         pse.io_syscw = -1;
2330
2331                         ps_list_add (cmdline, cargs, &pse);
2332                 } /* for (i = 0 .. nprocs) */
2333
2334                 if (nprocs < MAXPROCENTRY)
2335                         break;
2336         } /* while (getprocs64() > 0) */
2337         ps_submit_state ("running",  running);
2338         ps_submit_state ("sleeping", sleeping);
2339         ps_submit_state ("zombies",  zombies);
2340         ps_submit_state ("stopped",  stopped);
2341         ps_submit_state ("paging",   paging);
2342         ps_submit_state ("blocked",  blocked);
2343
2344         for (ps = list_head_g; ps != NULL; ps = ps->next)
2345                 ps_submit_proc_list (ps);
2346 /* #endif HAVE_PROCINFO_H */
2347
2348 #elif KERNEL_SOLARIS
2349         /*
2350          * The Solaris section adds a few more process states and removes some
2351          * process states compared to linux. Most notably there is no "PAGING"
2352          * and "BLOCKED" state for a process.  The rest is similar to the linux
2353          * code.
2354          */
2355         int running = 0;
2356         int sleeping = 0;
2357         int zombies = 0;
2358         int stopped = 0;
2359         int detached = 0;
2360         int daemon = 0;
2361         int system = 0;
2362         int orphan = 0;
2363
2364         struct dirent *ent;
2365         DIR *proc;
2366
2367         int status;
2368         procstat_t *ps_ptr;
2369         char state;
2370
2371         char cmdline[PRARGSZ];
2372
2373         ps_list_reset ();
2374
2375         proc = opendir ("/proc");
2376         if (proc == NULL)
2377                 return (-1);
2378
2379         while ((ent = readdir(proc)) != NULL)
2380         {
2381                 long pid;
2382                 struct procstat ps;
2383                 procstat_entry_t pse;
2384                 char *endptr;
2385
2386                 if (!isdigit ((int) ent->d_name[0]))
2387                         continue;
2388
2389                 pid = strtol (ent->d_name, &endptr, 10);
2390                 if (*endptr != 0) /* value didn't completely parse as a number */
2391                         continue;
2392
2393                 status = ps_read_process (pid, &ps, &state);
2394                 if (status != 0)
2395                 {
2396                         DEBUG("ps_read_process failed: %i", status);
2397                         continue;
2398                 }
2399
2400                 pse.id = pid;
2401                 pse.age = 0;
2402
2403                 pse.num_proc   = ps.num_proc;
2404                 pse.num_lwp    = ps.num_lwp;
2405                 pse.vmem_size  = ps.vmem_size;
2406                 pse.vmem_rss   = ps.vmem_rss;
2407                 pse.vmem_data  = ps.vmem_data;
2408                 pse.vmem_code  = ps.vmem_code;
2409                 pse.stack_size = ps.stack_size;
2410
2411                 pse.vmem_minflt = 0;
2412                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2413                 pse.vmem_majflt = 0;
2414                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2415
2416                 pse.cpu_user = 0;
2417                 pse.cpu_user_counter = ps.cpu_user_counter;
2418                 pse.cpu_system = 0;
2419                 pse.cpu_system_counter = ps.cpu_system_counter;
2420
2421                 pse.io_rchar = ps.io_rchar;
2422                 pse.io_wchar = ps.io_wchar;
2423                 pse.io_syscr = ps.io_syscr;
2424                 pse.io_syscw = ps.io_syscw;
2425
2426                 switch (state)
2427                 {
2428                         case 'R': running++;  break;
2429                         case 'S': sleeping++; break;
2430                         case 'E': detached++; break;
2431                         case 'Z': zombies++;  break;
2432                         case 'T': stopped++;  break;
2433                         case 'A': daemon++;   break;
2434                         case 'Y': system++;   break;
2435                         case 'O': orphan++;   break;
2436                 }
2437
2438
2439                 ps_list_add (ps.name,
2440                                 ps_get_cmdline (pid, cmdline, sizeof (cmdline)),
2441                                 &pse);
2442         } /* while(readdir) */
2443         closedir (proc);
2444
2445         ps_submit_state ("running",  running);
2446         ps_submit_state ("sleeping", sleeping);
2447         ps_submit_state ("zombies",  zombies);
2448         ps_submit_state ("stopped",  stopped);
2449         ps_submit_state ("detached", detached);
2450         ps_submit_state ("daemon",   daemon);
2451         ps_submit_state ("system",   system);
2452         ps_submit_state ("orphan",   orphan);
2453
2454         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2455                 ps_submit_proc_list (ps_ptr);
2456
2457         read_fork_rate();
2458 #endif /* KERNEL_SOLARIS */
2459
2460         return (0);
2461 } /* int ps_read */
2462
2463 void module_register (void)
2464 {
2465         plugin_register_complex_config ("processes", ps_config);
2466         plugin_register_init ("processes", ps_init);
2467         plugin_register_read ("processes", ps_read);
2468 } /* void module_register */