src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005       Lyonel Vincent
   4  * Copyright (C) 2006-2010  Florian octo Forster
   5  * Copyright (C) 2008       Oleg King
   6  * Copyright (C) 2009       Sebastian Harl
   7  * Copyright (C) 2009       Andrés J. Díaz
   8  * Copyright (C) 2009       Manuel Sanmartin
   9  * Copyright (C) 2010       Clément Stenac
  10  * Copyright (C) 2012       Cosmin Ioiart
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the
  14  * Free Software Foundation; either version 2 of the License, or (at your
  15  * option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with this program; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  25  *
  26  * Authors:
  27  *   Lyonel Vincent <lyonel at ezix.org>
  28  *   Florian octo Forster <octo at collectd.org>
  29  *   Oleg King <king2 at kaluga.ru>
  30  *   Sebastian Harl <sh at tokkee.org>
  31  *   Andrés J. Díaz <ajdiaz at connectical.com>
  32  *   Manuel Sanmartin
  33  *   Clément Stenac <clement.stenac at diwi.org>
  34  *   Cosmin Ioiart <cioiart at gmail.com>
  35  **/
  36
  37 #include "collectd.h"
  38 #include "common.h"
  39 #include "plugin.h"
  40 #include "configfile.h"
  41
  42 /* Include header files for the mach system, if they exist.. */
  43 #if HAVE_THREAD_INFO
  44 #  if HAVE_MACH_MACH_INIT_H
  45 #    include <mach/mach_init.h>
  46 #  endif
  47 #  if HAVE_MACH_HOST_PRIV_H
  48 #    include <mach/host_priv.h>
  49 #  endif
  50 #  if HAVE_MACH_MACH_ERROR_H
  51 #    include <mach/mach_error.h>
  52 #  endif
  53 #  if HAVE_MACH_MACH_HOST_H
  54 #    include <mach/mach_host.h>
  55 #  endif
  56 #  if HAVE_MACH_MACH_PORT_H
  57 #    include <mach/mach_port.h>
  58 #  endif
  59 #  if HAVE_MACH_MACH_TYPES_H
  60 #    include <mach/mach_types.h>
  61 #  endif
  62 #  if HAVE_MACH_MESSAGE_H
  63 #    include <mach/message.h>
  64 #  endif
  65 #  if HAVE_MACH_PROCESSOR_SET_H
  66 #    include <mach/processor_set.h>
  67 #  endif
  68 #  if HAVE_MACH_TASK_H
  69 #    include <mach/task.h>
  70 #  endif
  71 #  if HAVE_MACH_THREAD_ACT_H
  72 #    include <mach/thread_act.h>
  73 #  endif
  74 #  if HAVE_MACH_VM_REGION_H
  75 #    include <mach/vm_region.h>
  76 #  endif
  77 #  if HAVE_MACH_VM_MAP_H
  78 #    include <mach/vm_map.h>
  79 #  endif
  80 #  if HAVE_MACH_VM_PROT_H
  81 #    include <mach/vm_prot.h>
  82 #  endif
  83 #  if HAVE_SYS_SYSCTL_H
  84 #    include <sys/sysctl.h>
  85 #  endif
  86 /* #endif HAVE_THREAD_INFO */
  87
  88 #elif KERNEL_LINUX
  89 #  if HAVE_LINUX_CONFIG_H
  90 #    include <linux/config.h>
  91 #  endif
  92 #  ifndef CONFIG_HZ
  93 #    define CONFIG_HZ 100
  94 #  endif
  95 /* #endif KERNEL_LINUX */
  96
  97 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
  98 #  include <kvm.h>
  99 #  include <sys/param.h>
 100 #  include <sys/sysctl.h>
 101 #  include <sys/user.h>
 102 #  include <sys/proc.h>
 103 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 104
 105 #elif HAVE_PROCINFO_H
 106 #  include <procinfo.h>
 107 #  include <sys/types.h>
 108
 109 #define MAXPROCENTRY 32
 110 #define MAXTHRDENTRY 16
 111 #define MAXARGLN 1024
 112 /* #endif HAVE_PROCINFO_H */
 113
 114 #elif KERNEL_SOLARIS
 115 /* Hack: Avoid #error when building a 32-bit binary with
 116  * _FILE_OFFSET_BITS=64. There is a reason for this #error, as one
 117  * of the structures in <sys/procfs.h> uses an off_t, but that
 118  * isn't relevant to our usage of procfs. */
 119 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
 120 #  define SAVE_FOB_64
 121 #  undef _FILE_OFFSET_BITS
 122 #endif
 123
 124 # include <procfs.h>
 125
 126 #ifdef SAVE_FOB_64
 127 #  define _FILE_OFFSET_BITS 64
 128 #  undef SAVE_FOB_64
 129 #endif
 130
 131 # include <dirent.h>
 132 /* #endif KERNEL_SOLARIS */
 133
 134 #else
 135 # error "No applicable input method."
 136 #endif
 137
 138 #if HAVE_REGEX_H
 139 # include <regex.h>
 140 #endif
 141
 142 #if HAVE_KSTAT_H
 143 # include <kstat.h>
 144 #endif
 145
 146 #ifndef CMDLINE_BUFFER_SIZE
 147 # if defined(ARG_MAX) && (ARG_MAX < 4096)
 148 #  define CMDLINE_BUFFER_SIZE ARG_MAX
 149 # else
 150 #  define CMDLINE_BUFFER_SIZE 4096
 151 # endif
 152 #endif
 153
 154 typedef struct procstat_entry_s
 155 {
 156         unsigned long id;
 157         unsigned long age;
 158
 159         unsigned long num_proc;
 160         unsigned long num_lwp;
 161         unsigned long vmem_size;
 162         unsigned long vmem_rss;
 163         unsigned long vmem_data;
 164         unsigned long vmem_code;
 165         unsigned long stack_size;
 166
 167         unsigned long vmem_minflt;
 168         unsigned long vmem_majflt;
 169         derive_t      vmem_minflt_counter;
 170         derive_t      vmem_majflt_counter;
 171
 172         unsigned long cpu_user;
 173         unsigned long cpu_system;
 174         derive_t      cpu_user_counter;
 175         derive_t      cpu_system_counter;
 176
 177         /* io data */
 178         derive_t io_rchar;
 179         derive_t io_wchar;
 180         derive_t io_syscr;
 181         derive_t io_syscw;
 182
 183         derive_t cswitch_vol;
 184         derive_t cswitch_invol;
 185
 186         struct procstat_entry_s *next;
 187 } procstat_entry_t;
 188
 189 #define PROCSTAT_NAME_LEN 256
 190 typedef struct procstat
 191 {
 192         char          name[PROCSTAT_NAME_LEN];
 193 #if HAVE_REGEX_H
 194         regex_t *re;
 195 #endif
 196
 197         unsigned long num_proc;
 198         unsigned long num_lwp;
 199         unsigned long vmem_size;
 200         unsigned long vmem_rss;
 201         unsigned long vmem_data;
 202         unsigned long vmem_code;
 203         unsigned long stack_size;
 204
 205         derive_t vmem_minflt_counter;
 206         derive_t vmem_majflt_counter;
 207
 208         derive_t cpu_user_counter;
 209         derive_t cpu_system_counter;
 210
 211         /* io data */
 212         derive_t io_rchar;
 213         derive_t io_wchar;
 214         derive_t io_syscr;
 215         derive_t io_syscw;
 216
 217         derive_t cswitch_vol;
 218         derive_t cswitch_invol;
 219
 220         struct procstat   *next;
 221         struct procstat_entry_s *instances;
 222 } procstat_t;
 223
 224 static procstat_t *list_head_g = NULL;
 225
 226 static _Bool report_ctx_switch = 0;
 227
 228 #if HAVE_THREAD_INFO
 229 static mach_port_t port_host_self;
 230 static mach_port_t port_task_self;
 231
 232 static processor_set_name_array_t pset_list;
 233 static mach_msg_type_number_t     pset_list_len;
 234 /* #endif HAVE_THREAD_INFO */
 235
 236 #elif KERNEL_LINUX
 237 static long pagesize_g;
 238 /* #endif KERNEL_LINUX */
 239
 240 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 241 static int pagesize;
 242 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 243
 244 #elif HAVE_PROCINFO_H
 245 static  struct procentry64 procentry[MAXPROCENTRY];
 246 static  struct thrdentry64 thrdentry[MAXTHRDENTRY];
 247 static int pagesize;
 248
 249 #ifndef _AIXVERSION_610
 250 int     getprocs64 (void *procsinfo, int sizproc, void *fdsinfo, int sizfd, pid_t *index, int count);
 251 int     getthrds64( pid_t, void *, int, tid64_t *, int );
 252 #endif
 253 int getargs (void *processBuffer, int bufferLen, char *argsBuffer, int argsLen);
 254 #endif /* HAVE_PROCINFO_H */
 255
 256 /* put name of process from config to list_head_g tree
 257  * list_head_g is a list of 'procstat_t' structs with
 258  * processes names we want to watch */
 259 static void ps_list_register (const char *name, const char *regexp)
 260 {
 261         procstat_t *new;
 262         procstat_t *ptr;
 263         int status;
 264
 265         new = (procstat_t *) malloc (sizeof (procstat_t));
 266         if (new == NULL)
 267         {
 268                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 269                 return;
 270         }
 271         memset (new, 0, sizeof (procstat_t));
 272         sstrncpy (new->name, name, sizeof (new->name));
 273
 274 #if HAVE_REGEX_H
 275         if (regexp != NULL)
 276         {
 277                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 278                 new->re = (regex_t *) malloc (sizeof (regex_t));
 279                 if (new->re == NULL)
 280                 {
 281                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 282                         sfree (new);
 283                         return;
 284                 }
 285
 286                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 287                 if (status != 0)
 288                 {
 289                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 290                         sfree(new->re);
 291                         return;
 292                 }
 293         }
 294 #else
 295         if (regexp != NULL)
 296         {
 297                 ERROR ("processes plugin: ps_list_register: "
 298                                 "Regular expression \"%s\" found in config "
 299                                 "file, but support for regular expressions "
 300                                 "has been disabled at compile time.",
 301                                 regexp);
 302                 sfree (new);
 303                 return;
 304         }
 305 #endif
 306
 307         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 308         {
 309                 if (strcmp (ptr->name, name) == 0)
 310                 {
 311                         WARNING ("processes plugin: You have configured more "
 312                                         "than one `Process' or "
 313                                         "`ProcessMatch' with the same name. "
 314                                         "All but the first setting will be "
 315                                         "ignored.");
 316                         sfree (new->re);
 317                         sfree (new);
 318                         return;
 319                 }
 320
 321                 if (ptr->next == NULL)
 322                         break;
 323         }
 324
 325         if (ptr == NULL)
 326                 list_head_g = new;
 327         else
 328                 ptr->next = new;
 329 } /* void ps_list_register */
 330
 331 /* try to match name against entry, returns 1 if success */
 332 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 333 {
 334 #if HAVE_REGEX_H
 335         if (ps->re != NULL)
 336         {
 337                 int status;
 338                 const char *str;
 339
 340                 str = cmdline;
 341                 if ((str == NULL) || (str[0] == 0))
 342                         str = name;
 343
 344                 assert (str != NULL);
 345
 346                 status = regexec (ps->re, str,
 347                                 /* nmatch = */ 0,
 348                                 /* pmatch = */ NULL,
 349                                 /* eflags = */ 0);
 350                 if (status == 0)
 351                         return (1);
 352         }
 353         else
 354 #endif
 355         if (strcmp (ps->name, name) == 0)
 356                 return (1);
 357
 358         return (0);
 359 } /* int ps_list_match */
 360
 361 /* add process entry to 'instances' of process 'name' (or refresh it) */
 362 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 363 {
 364         procstat_t *ps;
 365         procstat_entry_t *pse;
 366
 367         if (entry->id == 0)
 368                 return;
 369
 370         for (ps = list_head_g; ps != NULL; ps = ps->next)
 371         {
 372                 if ((ps_list_match (name, cmdline, ps)) == 0)
 373                         continue;
 374
 375                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 376                         if ((pse->id == entry->id) || (pse->next == NULL))
 377                                 break;
 378
 379                 if ((pse == NULL) || (pse->id != entry->id))
 380                 {
 381                         procstat_entry_t *new;
 382
 383                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 384                         if (new == NULL)
 385                                 return;
 386                         memset (new, 0, sizeof (procstat_entry_t));
 387                         new->id = entry->id;
 388
 389                         if (pse == NULL)
 390                                 ps->instances = new;
 391                         else
 392                                 pse->next = new;
 393
 394                         pse = new;
 395                 }
 396
 397                 pse->age = 0;
 398                 pse->num_proc   = entry->num_proc;
 399                 pse->num_lwp    = entry->num_lwp;
 400                 pse->vmem_size  = entry->vmem_size;
 401                 pse->vmem_rss   = entry->vmem_rss;
 402                 pse->vmem_data  = entry->vmem_data;
 403                 pse->vmem_code  = entry->vmem_code;
 404                 pse->stack_size = entry->stack_size;
 405                 pse->io_rchar   = entry->io_rchar;
 406                 pse->io_wchar   = entry->io_wchar;
 407                 pse->io_syscr   = entry->io_syscr;
 408                 pse->io_syscw   = entry->io_syscw;
 409                 pse->cswitch_vol   = entry->cswitch_vol;
 410                 pse->cswitch_invol = entry->cswitch_invol;
 411
 412                 ps->num_proc   += pse->num_proc;
 413                 ps->num_lwp    += pse->num_lwp;
 414                 ps->vmem_size  += pse->vmem_size;
 415                 ps->vmem_rss   += pse->vmem_rss;
 416                 ps->vmem_data  += pse->vmem_data;
 417                 ps->vmem_code  += pse->vmem_code;
 418                 ps->stack_size += pse->stack_size;
 419
 420                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 421                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 422                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 423                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 424
 425                 ps->cswitch_vol   += ((pse->cswitch_vol == -1)?0:pse->cswitch_vol);
 426                 ps->cswitch_invol += ((pse->cswitch_invol == -1)?0:pse->cswitch_invol);
 427
 428                 if ((entry->vmem_minflt_counter == 0)
 429                                 && (entry->vmem_majflt_counter == 0))
 430                 {
 431                         pse->vmem_minflt_counter += entry->vmem_minflt;
 432                         pse->vmem_minflt = entry->vmem_minflt;
 433
 434                         pse->vmem_majflt_counter += entry->vmem_majflt;
 435                         pse->vmem_majflt = entry->vmem_majflt;
 436                 }
 437                 else
 438                 {
 439                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 440                         {
 441                                 pse->vmem_minflt = entry->vmem_minflt_counter
 442                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 443                         }
 444                         else
 445                         {
 446                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 447                         }
 448                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 449
 450                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 451                         {
 452                                 pse->vmem_majflt = entry->vmem_majflt_counter
 453                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 454                         }
 455                         else
 456                         {
 457                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 458                         }
 459                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 460                 }
 461
 462                 ps->vmem_minflt_counter += pse->vmem_minflt;
 463                 ps->vmem_majflt_counter += pse->vmem_majflt;
 464
 465                 if ((entry->cpu_user_counter == 0)
 466                                 && (entry->cpu_system_counter == 0))
 467                 {
 468                         pse->cpu_user_counter += entry->cpu_user;
 469                         pse->cpu_user = entry->cpu_user;
 470
 471                         pse->cpu_system_counter += entry->cpu_system;
 472                         pse->cpu_system = entry->cpu_system;
 473                 }
 474                 else
 475                 {
 476                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 477                         {
 478                                 pse->cpu_user = entry->cpu_user_counter
 479                                         + (ULONG_MAX - pse->cpu_user_counter);
 480                         }
 481                         else
 482                         {
 483                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 484                         }
 485                         pse->cpu_user_counter = entry->cpu_user_counter;
 486
 487                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 488                         {
 489                                 pse->cpu_system = entry->cpu_system_counter
 490                                         + (ULONG_MAX - pse->cpu_system_counter);
 491                         }
 492                         else
 493                         {
 494                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 495                         }
 496                         pse->cpu_system_counter = entry->cpu_system_counter;
 497                 }
 498
 499                 ps->cpu_user_counter   += pse->cpu_user;
 500                 ps->cpu_system_counter += pse->cpu_system;
 501         }
 502 }
 503
 504 /* remove old entries from instances of processes in list_head_g */
 505 static void ps_list_reset (void)
 506 {
 507         procstat_t *ps;
 508         procstat_entry_t *pse;
 509         procstat_entry_t *pse_prev;
 510
 511         for (ps = list_head_g; ps != NULL; ps = ps->next)
 512         {
 513                 ps->num_proc    = 0;
 514                 ps->num_lwp     = 0;
 515                 ps->vmem_size   = 0;
 516                 ps->vmem_rss    = 0;
 517                 ps->vmem_data   = 0;
 518                 ps->vmem_code   = 0;
 519                 ps->stack_size  = 0;
 520                 ps->io_rchar = -1;
 521                 ps->io_wchar = -1;
 522                 ps->io_syscr = -1;
 523                 ps->io_syscw = -1;
 524                 ps->cswitch_vol   = -1;
 525                 ps->cswitch_invol = -1;
 526
 527                 pse_prev = NULL;
 528                 pse = ps->instances;
 529                 while (pse != NULL)
 530                 {
 531                         if (pse->age > 10)
 532                         {
 533                                 DEBUG ("Removing this procstat entry cause it's too old: "
 534                                                 "id = %lu; name = %s;",
 535                                                 pse->id, ps->name);
 536
 537                                 if (pse_prev == NULL)
 538                                 {
 539                                         ps->instances = pse->next;
 540                                         free (pse);
 541                                         pse = ps->instances;
 542                                 }
 543                                 else
 544                                 {
 545                                         pse_prev->next = pse->next;
 546                                         free (pse);
 547                                         pse = pse_prev->next;
 548                                 }
 549                         }
 550                         else
 551                         {
 552                                 pse->age++;
 553                                 pse_prev = pse;
 554                                 pse = pse->next;
 555                         }
 556                 } /* while (pse != NULL) */
 557         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 558 }
 559
 560 /* put all pre-defined 'Process' names from config to list_head_g tree */
 561 static int ps_config (oconfig_item_t *ci)
 562 {
 563         int i;
 564
 565         for (i = 0; i < ci->children_num; ++i) {
 566                 oconfig_item_t *c = ci->children + i;
 567
 568                 if (strcasecmp (c->key, "Process") == 0)
 569                 {
 570                         if ((c->values_num != 1)
 571                                         || (OCONFIG_TYPE_STRING != c->values[0].type)) {
 572                                 ERROR ("processes plugin: `Process' expects exactly "
 573                                                 "one string argument (got %i).",
 574                                                 c->values_num);
 575                                 continue;
 576                         }
 577
 578                         if (c->children_num != 0) {
 579                                 WARNING ("processes plugin: the `Process' config option "
 580                                                 "does not expect any child elements -- ignoring "
 581                                                 "content (%i elements) of the <Process '%s'> block.",
 582                                                 c->children_num, c->values[0].value.string);
 583                         }
 584
 585                         ps_list_register (c->values[0].value.string, NULL);
 586                 }
 587                 else if (strcasecmp (c->key, "ProcessMatch") == 0)
 588                 {
 589                         if ((c->values_num != 2)
 590                                         || (OCONFIG_TYPE_STRING != c->values[0].type)
 591                                         || (OCONFIG_TYPE_STRING != c->values[1].type))
 592                         {
 593                                 ERROR ("processes plugin: `ProcessMatch' needs exactly "
 594                                                 "two string arguments (got %i).",
 595                                                 c->values_num);
 596                                 continue;
 597                         }
 598
 599                         if (c->children_num != 0) {
 600                                 WARNING ("processes plugin: the `ProcessMatch' config option "
 601                                                 "does not expect any child elements -- ignoring "
 602                                                 "content (%i elements) of the <ProcessMatch '%s' '%s'> "
 603                                                 "block.", c->children_num, c->values[0].value.string,
 604                                                 c->values[1].value.string);
 605                         }
 606
 607                         ps_list_register (c->values[0].value.string,
 608                                         c->values[1].value.string);
 609                 }
 610                 else if (strcasecmp (c->key, "CollectContextSwitch") == 0)
 611                 {
 612                         cf_util_get_boolean (c, &report_ctx_switch);
 613                 }
 614                 else
 615                 {
 616                         ERROR ("processes plugin: The `%s' configuration option is not "
 617                                         "understood and will be ignored.", c->key);
 618                         continue;
 619                 }
 620         }
 621
 622         return (0);
 623 }
 624
 625 static int ps_init (void)
 626 {
 627 #if HAVE_THREAD_INFO
 628         kern_return_t status;
 629
 630         port_host_self = mach_host_self ();
 631         port_task_self = mach_task_self ();
 632
 633         if (pset_list != NULL)
 634         {
 635                 vm_deallocate (port_task_self,
 636                                 (vm_address_t) pset_list,
 637                                 pset_list_len * sizeof (processor_set_t));
 638                 pset_list = NULL;
 639                 pset_list_len = 0;
 640         }
 641
 642         if ((status = host_processor_sets (port_host_self,
 643                                         &pset_list,
 644                                         &pset_list_len)) != KERN_SUCCESS)
 645         {
 646                 ERROR ("host_processor_sets failed: %s\n",
 647                                 mach_error_string (status));
 648                 pset_list = NULL;
 649                 pset_list_len = 0;
 650                 return (-1);
 651         }
 652 /* #endif HAVE_THREAD_INFO */
 653
 654 #elif KERNEL_LINUX
 655         pagesize_g = sysconf(_SC_PAGESIZE);
 656         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 657                         pagesize_g, CONFIG_HZ);
 658 /* #endif KERNEL_LINUX */
 659
 660 #elif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD)
 661         pagesize = getpagesize();
 662 /* #endif HAVE_LIBKVM_GETPROCS && (HAVE_STRUCT_KINFO_PROC_FREEBSD || HAVE_STRUCT_KINFO_PROC_OPENBSD) */
 663
 664 #elif HAVE_PROCINFO_H
 665         pagesize = getpagesize();
 666 #endif /* HAVE_PROCINFO_H */
 667
 668         return (0);
 669 } /* int ps_init */
 670
 671 /* submit global state (e.g.: qty of zombies, running, etc..) */
 672 static void ps_submit_state (const char *state, double value)
 673 {
 674         value_t values[1];
 675         value_list_t vl = VALUE_LIST_INIT;
 676
 677         values[0].gauge = value;
 678
 679         vl.values = values;
 680         vl.values_len = 1;
 681         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 682         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 683         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 684         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 685         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 686
 687         plugin_dispatch_values (&vl);
 688 }
 689
 690 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 691 static void ps_submit_proc_list (procstat_t *ps)
 692 {
 693         value_t values[2];
 694         value_list_t vl = VALUE_LIST_INIT;
 695
 696         vl.values = values;
 697         vl.values_len = 2;
 698         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 699         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 700         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 701
 702         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 703         vl.values[0].gauge = ps->vmem_size;
 704         vl.values_len = 1;
 705         plugin_dispatch_values (&vl);
 706
 707         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 708         vl.values[0].gauge = ps->vmem_rss;
 709         vl.values_len = 1;
 710         plugin_dispatch_values (&vl);
 711
 712         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 713         vl.values[0].gauge = ps->vmem_data;
 714         vl.values_len = 1;
 715         plugin_dispatch_values (&vl);
 716
 717         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 718         vl.values[0].gauge = ps->vmem_code;
 719         vl.values_len = 1;
 720         plugin_dispatch_values (&vl);
 721
 722         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 723         vl.values[0].gauge = ps->stack_size;
 724         vl.values_len = 1;
 725         plugin_dispatch_values (&vl);
 726
 727         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 728         vl.values[0].derive = ps->cpu_user_counter;
 729         vl.values[1].derive = ps->cpu_system_counter;
 730         vl.values_len = 2;
 731         plugin_dispatch_values (&vl);
 732
 733         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 734         vl.values[0].gauge = ps->num_proc;
 735         vl.values[1].gauge = ps->num_lwp;
 736         vl.values_len = 2;
 737         plugin_dispatch_values (&vl);
 738
 739         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 740         vl.values[0].derive = ps->vmem_minflt_counter;
 741         vl.values[1].derive = ps->vmem_majflt_counter;
 742         vl.values_len = 2;
 743         plugin_dispatch_values (&vl);
 744
 745         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 746         {
 747                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 748                 vl.values[0].derive = ps->io_rchar;
 749                 vl.values[1].derive = ps->io_wchar;
 750                 vl.values_len = 2;
 751                 plugin_dispatch_values (&vl);
 752         }
 753
 754         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 755         {
 756                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 757                 vl.values[0].derive = ps->io_syscr;
 758                 vl.values[1].derive = ps->io_syscw;
 759                 vl.values_len = 2;
 760                 plugin_dispatch_values (&vl);
 761         }
 762
 763         if ( report_ctx_switch )
 764         {
 765                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 766                 sstrncpy (vl.type_instance, "voluntary", sizeof (vl.type_instance));
 767                 vl.values[0].derive = ps->cswitch_vol;
 768                 vl.values_len = 1;
 769                 plugin_dispatch_values (&vl);
 770
 771                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 772                 sstrncpy (vl.type_instance, "involuntary", sizeof (vl.type_instance));
 773                 vl.values[0].derive = ps->cswitch_invol;
 774                 vl.values_len = 1;
 775                 plugin_dispatch_values (&vl);
 776         }
 777
 778         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 779                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 780                         "vmem_code = %lu; "
 781                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 782                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 783                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 784                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 785                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 786                         ps->name, ps->num_proc, ps->num_lwp,
 787                         ps->vmem_size, ps->vmem_rss,
 788                         ps->vmem_data, ps->vmem_code,
 789                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 790                         ps->cpu_user_counter, ps->cpu_system_counter,
 791                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 792                         ps->cswitch_vol, ps->cswitch_invol);
 793 } /* void ps_submit_proc_list */
 794
 795 #if KERNEL_LINUX || KERNEL_SOLARIS
 796 static void ps_submit_fork_rate (derive_t value)
 797 {
 798         value_t values[1];
 799         value_list_t vl = VALUE_LIST_INIT;
 800
 801         values[0].derive = value;
 802
 803         vl.values = values;
 804         vl.values_len = 1;
 805         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 806         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 807         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 808         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 809         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 810
 811         plugin_dispatch_values(&vl);
 812 }
 813 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 814
 815 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 816 #if KERNEL_LINUX
 817 static procstat_t *ps_read_tasks_status (int pid, procstat_t *ps)
 818 {
 819         char           dirname[64];
 820         DIR           *dh;
 821         char           filename[64];
 822         FILE          *fh;
 823         struct dirent *ent;
 824         derive_t cswitch_vol = 0;
 825         derive_t cswitch_invol = 0;
 826         char buffer[1024];
 827         char *fields[8];
 828         int numfields;
 829
 830         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 831
 832         if ((dh = opendir (dirname)) == NULL)
 833         {
 834                 DEBUG ("Failed to open directory `%s'", dirname);
 835                 return (NULL);
 836         }
 837
 838         while ((ent = readdir (dh)) != NULL)
 839         {
 840                 char *tpid;
 841
 842                 if (!isdigit ((int) ent->d_name[0]))
 843                         continue;
 844
 845                 tpid = ent->d_name;
 846
 847                 ssnprintf (filename, sizeof (filename), "/proc/%i/task/%s/status", pid, tpid);
 848                 if ((fh = fopen (filename, "r")) == NULL)
 849                 {
 850                         DEBUG ("Failed to open file `%s'", filename);
 851                         continue;
 852                 }
 853
 854                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 855                 {
 856                         derive_t tmp;
 857                         char *endptr;
 858
 859                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 860                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 861                                 continue;
 862
 863                         numfields = strsplit (buffer, fields,
 864                                 STATIC_ARRAY_SIZE (fields));
 865
 866                         if (numfields < 2)
 867                                 continue;
 868
 869                         errno = 0;
 870                         endptr = NULL;
 871                         tmp = (derive_t) strtoll (fields[1], &endptr, /* base = */ 10);
 872                         if ((errno == 0) && (endptr != fields[1]))
 873                         {
 874                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 875                                 {
 876                                         cswitch_vol += tmp;
 877                                 }
 878                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 879                                 {
 880                                         cswitch_invol += tmp;
 881                                 }
 882                         }
 883                 } /* while (fgets) */
 884
 885                 if (fclose (fh))
 886                 {
 887                         char errbuf[1024];
 888                                 WARNING ("processes: fclose: %s",
 889                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 890                 }
 891         }
 892         closedir (dh);
 893
 894         ps->cswitch_vol = cswitch_vol;
 895         ps->cswitch_invol = cswitch_invol;
 896
 897         return (ps);
 898 } /* int *ps_read_tasks_status */
 899
 900 static int ps_read_tasks (int pid)
 901 {
 902         char           dirname[64];
 903         DIR           *dh;
 904         struct dirent *ent;
 905         int count = 0;
 906
 907         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 908
 909         if ((dh = opendir (dirname)) == NULL)
 910         {
 911                 DEBUG ("Failed to open directory `%s'", dirname);
 912                 return (-1);
 913         }
 914
 915         while ((ent = readdir (dh)) != NULL)
 916         {
 917                 if (!isdigit ((int) ent->d_name[0]))
 918                         continue;
 919                 else
 920                         count++;
 921         }
 922         closedir (dh);
 923
 924         return ((count >= 1) ? count : 1);
 925 } /* int *ps_read_tasks */
 926
 927 /* Read advanced virtual memory data from /proc/pid/status */
 928 static procstat_t *ps_read_vmem (int pid, procstat_t *ps)
 929 {
 930         FILE *fh;
 931         char buffer[1024];
 932         char filename[64];
 933         unsigned long long lib = 0;
 934         unsigned long long exe = 0;
 935         unsigned long long data = 0;
 936         char *fields[8];
 937         int numfields;
 938
 939         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 940         if ((fh = fopen (filename, "r")) == NULL)
 941                 return (NULL);
 942
 943         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 944         {
 945                 long long tmp;
 946                 char *endptr;
 947
 948                 if (strncmp (buffer, "Vm", 2) != 0)
 949                         continue;
 950
 951                 numfields = strsplit (buffer, fields,
 952                                 STATIC_ARRAY_SIZE (fields));
 953
 954                 if (numfields < 2)
 955                         continue;
 956
 957                 errno = 0;
 958                 endptr = NULL;
 959                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 960                 if ((errno == 0) && (endptr != fields[1]))
 961                 {
 962                         if (strncmp (buffer, "VmData", 6) == 0)
 963                         {
 964                                 data = tmp;
 965                         }
 966                         else if (strncmp (buffer, "VmLib", 5) == 0)
 967                         {
 968                                 lib = tmp;
 969                         }
 970                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 971                         {
 972                                 exe = tmp;
 973                         }
 974                 }
 975         } /* while (fgets) */
 976
 977         if (fclose (fh))
 978         {
 979                 char errbuf[1024];
 980                 WARNING ("processes: fclose: %s",
 981                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 982         }
 983
 984         ps->vmem_data = data * 1024;
 985         ps->vmem_code = (exe + lib) * 1024;
 986
 987         return (ps);
 988 } /* procstat_t *ps_read_vmem */
 989
 990 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 991 {
 992         FILE *fh;
 993         char buffer[1024];
 994         char filename[64];
 995
 996         char *fields[8];
 997         int numfields;
 998
 999         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
1000         if ((fh = fopen (filename, "r")) == NULL)
1001                 return (NULL);
1002
1003         while (fgets (buffer, sizeof (buffer), fh) != NULL)
1004         {
1005                 derive_t *val = NULL;
1006                 long long tmp;
1007                 char *endptr;
1008
1009                 if (strncasecmp (buffer, "rchar:", 6) == 0)
1010                         val = &(ps->io_rchar);
1011                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
1012                         val = &(ps->io_wchar);
1013                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
1014                         val = &(ps->io_syscr);
1015                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
1016                         val = &(ps->io_syscw);
1017                 else
1018                         continue;
1019
1020                 numfields = strsplit (buffer, fields,
1021                                 STATIC_ARRAY_SIZE (fields));
1022
1023                 if (numfields < 2)
1024                         continue;
1025
1026                 errno = 0;
1027                 endptr = NULL;
1028                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
1029                 if ((errno != 0) || (endptr == fields[1]))
1030                         *val = -1;
1031                 else
1032                         *val = (derive_t) tmp;
1033         } /* while (fgets) */
1034
1035         if (fclose (fh))
1036         {
1037                 char errbuf[1024];
1038                 WARNING ("processes: fclose: %s",
1039                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1040         }
1041
1042         return (ps);
1043 } /* procstat_t *ps_read_io */
1044
1045 int ps_read_process (int pid, procstat_t *ps, char *state)
1046 {
1047         char  filename[64];
1048         char  buffer[1024];
1049
1050         char *fields[64];
1051         char  fields_len;
1052
1053         int   buffer_len;
1054
1055         char *buffer_ptr;
1056         size_t name_start_pos;
1057         size_t name_end_pos;
1058         size_t name_len;
1059
1060         derive_t cpu_user_counter;
1061         derive_t cpu_system_counter;
1062         long long unsigned vmem_size;
1063         long long unsigned vmem_rss;
1064         long long unsigned stack_size;
1065
1066         memset (ps, 0, sizeof (procstat_t));
1067
1068         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
1069
1070         buffer_len = read_file_contents (filename,
1071                         buffer, sizeof(buffer) - 1);
1072         if (buffer_len <= 0)
1073                 return (-1);
1074         buffer[buffer_len] = 0;
1075
1076         /* The name of the process is enclosed in parens. Since the name can
1077          * contain parens itself, spaces, numbers and pretty much everything
1078          * else, use these to determine the process name. We don't use
1079          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1080          * otherwise be required to determine name_len. */
1081         name_start_pos = 0;
1082         while ((buffer[name_start_pos] != '(')
1083                         && (name_start_pos < buffer_len))
1084                 name_start_pos++;
1085
1086         name_end_pos = buffer_len;
1087         while ((buffer[name_end_pos] != ')')
1088                         && (name_end_pos > 0))
1089                 name_end_pos--;
1090
1091         /* Either '(' or ')' is not found or they are in the wrong order.
1092          * Anyway, something weird that shouldn't happen ever. */
1093         if (name_start_pos >= name_end_pos)
1094         {
1095                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1096                                 name_start_pos, name_end_pos);
1097                 return (-1);
1098         }
1099
1100         name_len = (name_end_pos - name_start_pos) - 1;
1101         if (name_len >= sizeof (ps->name))
1102                 name_len = sizeof (ps->name) - 1;
1103
1104         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1105
1106         if ((buffer_len - name_end_pos) < 2)
1107                 return (-1);
1108         buffer_ptr = &buffer[name_end_pos + 2];
1109
1110         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1111         if (fields_len < 22)
1112         {
1113                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
1114                                 " `%s' has only %i fields..",
1115                                 (int) pid, filename, fields_len);
1116                 return (-1);
1117         }
1118
1119         *state = fields[0][0];
1120
1121         if (*state == 'Z')
1122         {
1123                 ps->num_lwp  = 0;
1124                 ps->num_proc = 0;
1125         }
1126         else
1127         {
1128                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
1129                 {
1130                         /* returns -1 => kernel 2.4 */
1131                         ps->num_lwp = 1;
1132                 }
1133                 ps->num_proc = 1;
1134         }
1135
1136         /* Leave the rest at zero if this is only a zombi */
1137         if (ps->num_proc == 0)
1138         {
1139                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
1140                                 "name = %s;", pid, ps->name);
1141                 return (0);
1142         }
1143
1144         cpu_user_counter   = atoll (fields[11]);
1145         cpu_system_counter = atoll (fields[12]);
1146         vmem_size          = atoll (fields[20]);
1147         vmem_rss           = atoll (fields[21]);
1148         ps->vmem_minflt_counter = atol (fields[7]);
1149         ps->vmem_majflt_counter = atol (fields[9]);
1150
1151         {
1152                 unsigned long long stack_start = atoll (fields[25]);
1153                 unsigned long long stack_ptr   = atoll (fields[26]);
1154
1155                 stack_size = (stack_start > stack_ptr)
1156                         ? stack_start - stack_ptr
1157                         : stack_ptr - stack_start;
1158         }
1159
1160         /* Convert jiffies to useconds */
1161         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1162         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1163         vmem_rss = vmem_rss * pagesize_g;
1164
1165         if ( (ps_read_vmem(pid, ps)) == NULL)
1166         {
1167                 /* No VMem data */
1168                 ps->vmem_data = -1;
1169                 ps->vmem_code = -1;
1170                 DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
1171         }
1172
1173         ps->cpu_user_counter = cpu_user_counter;
1174         ps->cpu_system_counter = cpu_system_counter;
1175         ps->vmem_size = (unsigned long) vmem_size;
1176         ps->vmem_rss = (unsigned long) vmem_rss;
1177         ps->stack_size = (unsigned long) stack_size;
1178
1179         if ( (ps_read_io (pid, ps)) == NULL)
1180         {
1181                 /* no io data */
1182                 ps->io_rchar = -1;
1183                 ps->io_wchar = -1;
1184                 ps->io_syscr = -1;
1185                 ps->io_syscw = -1;
1186
1187                 DEBUG("ps_read_process: not get io data for pid %i",pid);
1188         }
1189
1190         if ( report_ctx_switch )
1191         {
1192                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1193                 {
1194                         ps->cswitch_vol = -1;
1195                         ps->cswitch_invol = -1;
1196
1197                         DEBUG("ps_read_tasks_status: not get context "
1198                                         "switch data for pid %i",pid);
1199                 }
1200         }
1201
1202         /* success */
1203         return (0);
1204 } /* int ps_read_process (...) */
1205
1206 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
1207 {
1208         char  *buf_ptr;
1209         size_t len;
1210
1211         char file[PATH_MAX];
1212         int  fd;
1213
1214         size_t n;
1215
1216         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1217                 return NULL;
1218
1219         ssnprintf (file, sizeof (file), "/proc/%u/cmdline",
1220                         (unsigned int) pid);
1221
1222         errno = 0;
1223         fd = open (file, O_RDONLY);
1224         if (fd < 0) {
1225                 char errbuf[4096];
1226                 /* ENOENT means the process exited while we were handling it.
1227                  * Don't complain about this, it only fills the logs. */
1228                 if (errno != ENOENT)
1229                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1230                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1231                 return NULL;
1232         }
1233
1234         buf_ptr = buf;
1235         len     = buf_len;
1236
1237         n = 0;
1238
1239         while (42) {
1240                 ssize_t status;
1241
1242                 status = read (fd, (void *)buf_ptr, len);
1243
1244                 if (status < 0) {
1245                         char errbuf[1024];
1246
1247                         if ((EAGAIN == errno) || (EINTR == errno))
1248                                 continue;
1249
1250                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1251                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1252                         close (fd);
1253                         return NULL;
1254                 }
1255
1256                 n += status;
1257
1258                 if (status == 0)
1259                         break;
1260
1261                 buf_ptr += status;
1262                 len     -= status;
1263
1264                 if (len <= 0)
1265                         break;
1266         }
1267
1268         close (fd);
1269
1270         if (0 == n) {
1271                 /* cmdline not available; e.g. kernel thread, zombie */
1272                 if (NULL == name)
1273                         return NULL;
1274
1275                 ssnprintf (buf, buf_len, "[%s]", name);
1276                 return buf;
1277         }
1278
1279         assert (n <= buf_len);
1280
1281         if (n == buf_len)
1282                 --n;
1283         buf[n] = '\0';
1284
1285         --n;
1286         /* remove trailing whitespace */
1287         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1288                 buf[n] = '\0';
1289                 --n;
1290         }
1291
1292         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1293         while (n > 0) {
1294                 if ('\0' == buf[n])
1295                         buf[n] = ' ';
1296                 --n;
1297         }
1298         return buf;
1299 } /* char *ps_get_cmdline (...) */
1300
1301 static int read_fork_rate ()
1302 {
1303         FILE *proc_stat;
1304         char buffer[1024];
1305         value_t value;
1306         _Bool value_valid = 0;
1307
1308         proc_stat = fopen ("/proc/stat", "r");
1309         if (proc_stat == NULL)
1310         {
1311                 char errbuf[1024];
1312                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1313                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1314                 return (-1);
1315         }
1316
1317         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1318         {
1319                 int status;
1320                 char *fields[3];
1321                 int fields_num;
1322
1323                 fields_num = strsplit (buffer, fields,
1324                                 STATIC_ARRAY_SIZE (fields));
1325                 if (fields_num != 2)
1326                         continue;
1327
1328                 if (strcmp ("processes", fields[0]) != 0)
1329                         continue;
1330
1331                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1332                 if (status == 0)
1333                         value_valid = 1;
1334
1335                 break;
1336         }
1337         fclose(proc_stat);
1338
1339         if (!value_valid)
1340                 return (-1);
1341
1342         ps_submit_fork_rate (value.derive);
1343         return (0);
1344 }
1345 #endif /*KERNEL_LINUX */
1346
1347 #if KERNEL_SOLARIS
1348 static const char *ps_get_cmdline (long pid, /* {{{ */
1349                 char *buffer, size_t buffer_size)
1350 {
1351         char path[PATH_MAX];
1352         psinfo_t info;
1353         int status;
1354
1355         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1356
1357         status = read_file_contents (path, (void *) &info, sizeof (info));
1358         if (status != sizeof (info))
1359         {
1360                 ERROR ("processes plugin: Unexpected return value "
1361                                 "while reading \"%s\": "
1362                                 "Returned %i but expected %zu.",
1363                                 path, status, buffer_size);
1364                 return (NULL);
1365         }
1366
1367         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1368         sstrncpy (buffer, info.pr_psargs, buffer_size);
1369
1370         return (buffer);
1371 } /* }}} int ps_get_cmdline */
1372
1373 /*
1374  * Reads process information on the Solaris OS. The information comes mainly from
1375  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1376  * The values for input and ouput chars are calculated "by hand"
1377  * Added a few "solaris" specific process states as well
1378  */
1379 static int ps_read_process(long pid, procstat_t *ps, char *state)
1380 {
1381         char filename[64];
1382         char f_psinfo[64], f_usage[64];
1383         char *buffer;
1384
1385         pstatus_t *myStatus;
1386         psinfo_t *myInfo;
1387         prusage_t *myUsage;
1388
1389         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1390         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1391         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1392
1393
1394         buffer = malloc(sizeof (pstatus_t));
1395         memset(buffer, 0, sizeof (pstatus_t));
1396         read_file_contents(filename, buffer, sizeof (pstatus_t));
1397         myStatus = (pstatus_t *) buffer;
1398
1399         buffer = malloc(sizeof (psinfo_t));
1400         memset(buffer, 0, sizeof(psinfo_t));
1401         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1402         myInfo = (psinfo_t *) buffer;
1403
1404         buffer = malloc(sizeof (prusage_t));
1405         memset(buffer, 0, sizeof(prusage_t));
1406         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1407         myUsage = (prusage_t *) buffer;
1408
1409         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1410         ps->num_lwp = myStatus->pr_nlwp;
1411         if (myInfo->pr_wstat != 0) {
1412                 ps->num_proc = 0;
1413                 ps->num_lwp = 0;
1414                 *state = (char) 'Z';
1415                 return (0);
1416         } else {
1417                 ps->num_proc = 1;
1418                 ps->num_lwp = myInfo->pr_nlwp;
1419         }
1420
1421         /*
1422          * Convert system time and user time from nanoseconds to microseconds
1423          * for compatibility with the linux module
1424          */
1425         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1426         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1427
1428         /*
1429          * Convert rssize from KB to bytes to be consistent w/ the linux module
1430          */
1431         ps->vmem_rss = myInfo->pr_rssize * 1024;
1432         ps->vmem_size = myInfo->pr_size * 1024;
1433         ps->vmem_minflt_counter = myUsage->pr_minf;
1434         ps->vmem_majflt_counter = myUsage->pr_majf;
1435
1436         /*
1437          * TODO: Data and code segment calculations for Solaris
1438          */
1439
1440         ps->vmem_data = -1;
1441         ps->vmem_code = -1;
1442         ps->stack_size = myStatus->pr_stksize;
1443
1444         /*
1445          * Calculating input/ouput chars
1446          * Formula used is total chars / total blocks => chars/block
1447          * then convert input/output blocks to chars
1448          */
1449         ulong_t tot_chars = myUsage->pr_ioch;
1450         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1451         ulong_t chars_per_block = 1;
1452         if (tot_blocks != 0)
1453                 chars_per_block = tot_chars / tot_blocks;
1454         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1455         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1456         ps->io_syscr = myUsage->pr_sysc;
1457         ps->io_syscw = myUsage->pr_sysc;
1458
1459
1460         /*
1461          * TODO: Find way of setting BLOCKED and PAGING status
1462          */
1463
1464         *state = (char) 'R';
1465         if (myStatus->pr_flags & PR_ASLEEP)
1466                 *state = (char) 'S';
1467         else if (myStatus->pr_flags & PR_STOPPED)
1468                 *state = (char) 'T';
1469         else if (myStatus->pr_flags & PR_DETACH)
1470                 *state = (char) 'E';
1471         else if (myStatus->pr_flags & PR_DAEMON)
1472                 *state = (char) 'A';
1473         else if (myStatus->pr_flags & PR_ISSYS)
1474                 *state = (char) 'Y';
1475         else if (myStatus->pr_flags & PR_ORPHAN)
1476                 *state = (char) 'O';
1477
1478         sfree(myStatus);
1479         sfree(myInfo);
1480         sfree(myUsage);
1481
1482         return (0);
1483 }
1484
1485 /*
1486  * Reads the number of threads created since the last reboot. On Solaris these
1487  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1488  * The result is the sum for all the threads created on each cpu
1489  */
1490 static int read_fork_rate()
1491 {
1492         extern kstat_ctl_t *kc;
1493         kstat_t *ksp_chain = NULL;
1494         derive_t result = 0;
1495
1496         if (kc == NULL)
1497                 return (-1);
1498
1499         for (ksp_chain = kc->kc_chain;
1500                         ksp_chain != NULL;
1501                         ksp_chain = ksp_chain->ks_next)
1502         {
1503                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1504                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1505                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1506                 {
1507                         long long tmp;
1508
1509                         kstat_read (kc, ksp_chain, NULL);
1510
1511                         tmp = get_kstat_value(ksp_chain, "nthreads");
1512                         if (tmp != -1LL)
1513                                 result += tmp;
1514                 }
1515         }
1516
1517         ps_submit_fork_rate (result);
1518         return (0);
1519 }
1520 #endif /* KERNEL_SOLARIS */
1521
1522 #if HAVE_THREAD_INFO
1523 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1524 {
1525         int mib[4];
1526
1527         struct kinfo_proc kp;
1528         size_t            kp_size;
1529
1530         mib[0] = CTL_KERN;
1531         mib[1] = KERN_PROC;
1532         mib[2] = KERN_PROC_PID;
1533
1534         if (pid_for_task (t, pid) != KERN_SUCCESS)
1535                 return (-1);
1536         mib[3] = *pid;
1537
1538         kp_size = sizeof (kp);
1539         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1540                 return (-1);
1541
1542         if (name_max_len > (MAXCOMLEN + 1))
1543                 name_max_len = MAXCOMLEN + 1;
1544
1545         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1546         name[name_max_len - 1] = '\0';
1547
1548         DEBUG ("pid = %i; name = %s;", *pid, name);
1549
1550         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1551          * `top' does it, because it is a lot of work and only used when
1552          * debugging. -octo */
1553
1554         return (0);
1555 }
1556 #endif /* HAVE_THREAD_INFO */
1557 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1558
1559 /* do actual readings from kernel */
1560 static int ps_read (void)
1561 {
1562 #if HAVE_THREAD_INFO
1563         kern_return_t            status;
1564
1565         int                      pset;
1566         processor_set_t          port_pset_priv;
1567
1568         int                      task;
1569         task_array_t             task_list;
1570         mach_msg_type_number_t   task_list_len;
1571
1572         int                      task_pid;
1573         char                     task_name[MAXCOMLEN + 1];
1574
1575         int                      thread;
1576         thread_act_array_t       thread_list;
1577         mach_msg_type_number_t   thread_list_len;
1578         thread_basic_info_data_t thread_data;
1579         mach_msg_type_number_t   thread_data_len;
1580
1581         int running  = 0;
1582         int sleeping = 0;
1583         int zombies  = 0;
1584         int stopped  = 0;
1585         int blocked  = 0;
1586
1587         procstat_t *ps;
1588         procstat_entry_t pse;
1589
1590         ps_list_reset ();
1591
1592         /*
1593          * The Mach-concept is a little different from the traditional UNIX
1594          * concept: All the work is done in threads. Threads are contained in
1595          * `tasks'. Therefore, `task status' doesn't make much sense, since
1596          * it's actually a `thread status'.
1597          * Tasks are assigned to sets of processors, so that's where you go to
1598          * get a list.
1599          */
1600         for (pset = 0; pset < pset_list_len; pset++)
1601         {
1602                 if ((status = host_processor_set_priv (port_host_self,
1603                                                 pset_list[pset],
1604                                                 &port_pset_priv)) != KERN_SUCCESS)
1605                 {
1606                         ERROR ("host_processor_set_priv failed: %s\n",
1607                                         mach_error_string (status));
1608                         continue;
1609                 }
1610
1611                 if ((status = processor_set_tasks (port_pset_priv,
1612                                                 &task_list,
1613                                                 &task_list_len)) != KERN_SUCCESS)
1614                 {
1615                         ERROR ("processor_set_tasks failed: %s\n",
1616                                         mach_error_string (status));
1617                         mach_port_deallocate (port_task_self, port_pset_priv);
1618                         continue;
1619                 }
1620
1621                 for (task = 0; task < task_list_len; task++)
1622                 {
1623                         ps = NULL;
1624                         if (mach_get_task_name (task_list[task],
1625                                                 &task_pid,
1626                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1627                         {
1628                                 /* search for at least one match */
1629                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1630                                         /* FIXME: cmdline should be here instead of NULL */
1631                                         if (ps_list_match (task_name, NULL, ps) == 1)
1632                                                 break;
1633                         }
1634
1635                         /* Collect more detailed statistics for this process */
1636                         if (ps != NULL)
1637                         {
1638                                 task_basic_info_data_t        task_basic_info;
1639                                 mach_msg_type_number_t        task_basic_info_len;
1640                                 task_events_info_data_t       task_events_info;
1641                                 mach_msg_type_number_t        task_events_info_len;
1642                                 task_absolutetime_info_data_t task_absolutetime_info;
1643                                 mach_msg_type_number_t        task_absolutetime_info_len;
1644
1645                                 memset (&pse, '\0', sizeof (pse));
1646                                 pse.id = task_pid;
1647
1648                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1649                                 status = task_info (task_list[task],
1650                                                 TASK_BASIC_INFO,
1651                                                 (task_info_t) &task_basic_info,
1652                                                 &task_basic_info_len);
1653                                 if (status != KERN_SUCCESS)
1654                                 {
1655                                         ERROR ("task_info failed: %s",
1656                                                         mach_error_string (status));
1657                                         continue; /* with next thread_list */
1658                                 }
1659
1660                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1661                                 status = task_info (task_list[task],
1662                                                 TASK_EVENTS_INFO,
1663                                                 (task_info_t) &task_events_info,
1664                                                 &task_events_info_len);
1665                                 if (status != KERN_SUCCESS)
1666                                 {
1667                                         ERROR ("task_info failed: %s",
1668                                                         mach_error_string (status));
1669                                         continue; /* with next thread_list */
1670                                 }
1671
1672                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1673                                 status = task_info (task_list[task],
1674                                                 TASK_ABSOLUTETIME_INFO,
1675                                                 (task_info_t) &task_absolutetime_info,
1676                                                 &task_absolutetime_info_len);
1677                                 if (status != KERN_SUCCESS)
1678                                 {
1679                                         ERROR ("task_info failed: %s",
1680                                                         mach_error_string (status));
1681                                         continue; /* with next thread_list */
1682                                 }
1683
1684                                 pse.num_proc++;
1685                                 pse.vmem_size = task_basic_info.virtual_size;
1686                                 pse.vmem_rss = task_basic_info.resident_size;
1687                                 /* Does not seem to be easily exposed */
1688                                 pse.vmem_data = 0;
1689                                 pse.vmem_code = 0;
1690
1691                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1692                                 pse.vmem_majflt_counter = task_events_info.faults;
1693
1694                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1695                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1696                         }
1697
1698                         status = task_threads (task_list[task], &thread_list,
1699                                         &thread_list_len);
1700                         if (status != KERN_SUCCESS)
1701                         {
1702                                 /* Apple's `top' treats this case a zombie. It
1703                                  * makes sense to some extend: A `zombie'
1704                                  * thread is nonsense, since the task/process
1705                                  * is dead. */
1706                                 zombies++;
1707                                 DEBUG ("task_threads failed: %s",
1708                                                 mach_error_string (status));
1709                                 if (task_list[task] != port_task_self)
1710                                         mach_port_deallocate (port_task_self,
1711                                                         task_list[task]);
1712                                 continue; /* with next task_list */
1713                         }
1714
1715                         for (thread = 0; thread < thread_list_len; thread++)
1716                         {
1717                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1718                                 status = thread_info (thread_list[thread],
1719                                                 THREAD_BASIC_INFO,
1720                                                 (thread_info_t) &thread_data,
1721                                                 &thread_data_len);
1722                                 if (status != KERN_SUCCESS)
1723                                 {
1724                                         ERROR ("thread_info failed: %s",
1725                                                         mach_error_string (status));
1726                                         if (task_list[task] != port_task_self)
1727                                                 mach_port_deallocate (port_task_self,
1728                                                                 thread_list[thread]);
1729                                         continue; /* with next thread_list */
1730                                 }
1731
1732                                 if (ps != NULL)
1733                                         pse.num_lwp++;
1734
1735                                 switch (thread_data.run_state)
1736                                 {
1737                                         case TH_STATE_RUNNING:
1738                                                 running++;
1739                                                 break;
1740                                         case TH_STATE_STOPPED:
1741                                         /* What exactly is `halted'? */
1742                                         case TH_STATE_HALTED:
1743                                                 stopped++;
1744                                                 break;
1745                                         case TH_STATE_WAITING:
1746                                                 sleeping++;
1747                                                 break;
1748                                         case TH_STATE_UNINTERRUPTIBLE:
1749                                                 blocked++;
1750                                                 break;
1751                                         /* There is no `zombie' case here,
1752                                          * since there are no zombie-threads.
1753                                          * There's only zombie tasks, which are
1754                                          * handled above. */
1755                                         default:
1756                                                 WARNING ("Unknown thread status: %i",
1757                                                                 thread_data.run_state);
1758                                                 break;
1759                                 } /* switch (thread_data.run_state) */
1760
1761                                 if (task_list[task] != port_task_self)
1762                                 {
1763                                         status = mach_port_deallocate (port_task_self,
1764                                                         thread_list[thread]);
1765                                         if (status != KERN_SUCCESS)
1766                                                 ERROR ("mach_port_deallocate failed: %s",
1767                                                                 mach_error_string (status));
1768                                 }
1769                         } /* for (thread_list) */
1770
1771                         if ((status = vm_deallocate (port_task_self,
1772                                                         (vm_address_t) thread_list,
1773                                                         thread_list_len * sizeof (thread_act_t)))
1774                                         != KERN_SUCCESS)
1775                         {
1776                                 ERROR ("vm_deallocate failed: %s",
1777                                                 mach_error_string (status));
1778                         }
1779                         thread_list = NULL;
1780                         thread_list_len = 0;
1781
1782                         /* Only deallocate the task port, if it isn't our own.
1783                          * Don't know what would happen in that case, but this
1784                          * is what Apple's top does.. ;) */
1785                         if (task_list[task] != port_task_self)
1786                         {
1787                                 status = mach_port_deallocate (port_task_self,
1788                                                 task_list[task]);
1789                                 if (status != KERN_SUCCESS)
1790                                         ERROR ("mach_port_deallocate failed: %s",
1791                                                         mach_error_string (status));
1792                         }
1793
1794                         if (ps != NULL)
1795                                 /* FIXME: cmdline should be here instead of NULL */
1796                                 ps_list_add (task_name, NULL, &pse);
1797                 } /* for (task_list) */
1798
1799                 if ((status = vm_deallocate (port_task_self,
1800                                 (vm_address_t) task_list,
1801                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1802                 {
1803                         ERROR ("vm_deallocate failed: %s",
1804                                         mach_error_string (status));
1805                 }
1806                 task_list = NULL;
1807                 task_list_len = 0;
1808
1809                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1810                                 != KERN_SUCCESS)
1811                 {
1812                         ERROR ("mach_port_deallocate failed: %s",
1813                                         mach_error_string (status));
1814                 }
1815         } /* for (pset_list) */
1816
1817         ps_submit_state ("running", running);
1818         ps_submit_state ("sleeping", sleeping);
1819         ps_submit_state ("zombies", zombies);
1820         ps_submit_state ("stopped", stopped);
1821         ps_submit_state ("blocked", blocked);
1822
1823         for (ps = list_head_g; ps != NULL; ps = ps->next)
1824                 ps_submit_proc_list (ps);
1825 /* #endif HAVE_THREAD_INFO */
1826
1827 #elif KERNEL_LINUX
1828         int running  = 0;
1829         int sleeping = 0;
1830         int zombies  = 0;
1831         int stopped  = 0;
1832         int paging   = 0;
1833         int blocked  = 0;
1834
1835         struct dirent *ent;
1836         DIR           *proc;
1837         int            pid;
1838
1839         char cmdline[CMDLINE_BUFFER_SIZE];
1840
1841         int        status;
1842         procstat_t ps;
1843         procstat_entry_t pse;
1844         char       state;
1845
1846         procstat_t *ps_ptr;
1847
1848         running = sleeping = zombies = stopped = paging = blocked = 0;
1849         ps_list_reset ();
1850
1851         if ((proc = opendir ("/proc")) == NULL)
1852         {
1853                 char errbuf[1024];
1854                 ERROR ("Cannot open `/proc': %s",
1855                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1856                 return (-1);
1857         }
1858
1859         while ((ent = readdir (proc)) != NULL)
1860         {
1861                 if (!isdigit (ent->d_name[0]))
1862                         continue;
1863
1864                 if ((pid = atoi (ent->d_name)) < 1)
1865                         continue;
1866
1867                 status = ps_read_process (pid, &ps, &state);
1868                 if (status != 0)
1869                 {
1870                         DEBUG ("ps_read_process failed: %i", status);
1871                         continue;
1872                 }
1873
1874                 pse.id       = pid;
1875                 pse.age      = 0;
1876
1877                 pse.num_proc   = ps.num_proc;
1878                 pse.num_lwp    = ps.num_lwp;
1879                 pse.vmem_size  = ps.vmem_size;
1880                 pse.vmem_rss   = ps.vmem_rss;
1881                 pse.vmem_data  = ps.vmem_data;
1882                 pse.vmem_code  = ps.vmem_code;
1883                 pse.stack_size = ps.stack_size;
1884
1885                 pse.vmem_minflt = 0;
1886                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1887                 pse.vmem_majflt = 0;
1888                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1889
1890                 pse.cpu_user = 0;
1891                 pse.cpu_user_counter = ps.cpu_user_counter;
1892                 pse.cpu_system = 0;
1893                 pse.cpu_system_counter = ps.cpu_system_counter;
1894
1895                 pse.io_rchar = ps.io_rchar;
1896                 pse.io_wchar = ps.io_wchar;
1897                 pse.io_syscr = ps.io_syscr;
1898                 pse.io_syscw = ps.io_syscw;
1899
1900                 pse.cswitch_vol = ps.cswitch_vol;
1901                 pse.cswitch_invol = ps.cswitch_invol;
1902
1903                 switch (state)
1904                 {
1905                         case 'R': running++;  break;
1906                         case 'S': sleeping++; break;
1907                         case 'D': blocked++;  break;
1908                         case 'Z': zombies++;  break;
1909                         case 'T': stopped++;  break;
1910                         case 'W': paging++;   break;
1911                 }
1912
1913                 ps_list_add (ps.name,
1914                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1915                                 &pse);
1916         }
1917
1918         closedir (proc);
1919
1920         ps_submit_state ("running",  running);
1921         ps_submit_state ("sleeping", sleeping);
1922         ps_submit_state ("zombies",  zombies);
1923         ps_submit_state ("stopped",  stopped);
1924         ps_submit_state ("paging",   paging);
1925         ps_submit_state ("blocked",  blocked);
1926
1927         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1928                 ps_submit_proc_list (ps_ptr);
1929
1930         read_fork_rate();
1931 /* #endif KERNEL_LINUX */
1932
1933 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1934         int running  = 0;
1935         int sleeping = 0;
1936         int zombies  = 0;
1937         int stopped  = 0;
1938         int blocked  = 0;
1939         int idle     = 0;
1940         int wait     = 0;
1941
1942         kvm_t *kd;
1943         char errbuf[_POSIX2_LINE_MAX];
1944         struct kinfo_proc *procs;          /* array of processes */
1945         struct kinfo_proc *proc_ptr = NULL;
1946         int count;                         /* returns number of processes */
1947         int i;
1948
1949         procstat_t *ps_ptr;
1950         procstat_entry_t pse;
1951
1952         ps_list_reset ();
1953
1954         /* Open the kvm interface, get a descriptor */
1955         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1956         if (kd == NULL)
1957         {
1958                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1959                                 errbuf);
1960                 return (0);
1961         }
1962
1963         /* Get the list of processes. */
1964         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1965         if (procs == NULL)
1966         {
1967                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1968                                 kvm_geterr(kd));
1969                 kvm_close (kd);
1970                 return (0);
1971         }
1972
1973         /* Iterate through the processes in kinfo_proc */
1974         for (i = 0; i < count; i++)
1975         {
1976                 /* Create only one process list entry per _process_, i.e.
1977                  * filter out threads (duplicate PID entries). */
1978                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1979                 {
1980                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1981                         _Bool have_cmdline = 0;
1982
1983                         proc_ptr = &(procs[i]);
1984                         /* Don't probe system processes and processes without arguments */
1985                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1986                                         && (procs[i].ki_args != NULL))
1987                         {
1988                                 char **argv;
1989                                 int argc;
1990                                 int status;
1991
1992                                 /* retrieve the arguments */
1993                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1994                                 argc = 0;
1995                                 if ((argv != NULL) && (argv[0] != NULL))
1996                                 {
1997                                         while (argv[argc] != NULL)
1998                                                 argc++;
1999
2000                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2001                                         if (status < 0)
2002                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2003                                         else
2004                                                 have_cmdline = 1;
2005                                 }
2006                         } /* if (process has argument list) */
2007
2008                         pse.id       = procs[i].ki_pid;
2009                         pse.age      = 0;
2010
2011                         pse.num_proc = 1;
2012                         pse.num_lwp  = procs[i].ki_numthreads;
2013
2014                         pse.vmem_size = procs[i].ki_size;
2015                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
2016                         pse.vmem_data = procs[i].ki_dsize * pagesize;
2017                         pse.vmem_code = procs[i].ki_tsize * pagesize;
2018                         pse.stack_size = procs[i].ki_ssize * pagesize;
2019                         pse.vmem_minflt = 0;
2020                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
2021                         pse.vmem_majflt = 0;
2022                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
2023
2024                         pse.cpu_user = 0;
2025                         pse.cpu_system = 0;
2026                         pse.cpu_user_counter = 0;
2027                         pse.cpu_system_counter = 0;
2028                         /*
2029                          * The u-area might be swapped out, and we can't get
2030                          * at it because we have a crashdump and no swap.
2031                          * If it's here fill in these fields, otherwise, just
2032                          * leave them 0.
2033                          */
2034                         if (procs[i].ki_flag & P_INMEM)
2035                         {
2036                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2037                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2038                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2039                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2040                         }
2041
2042                         /* no I/O data */
2043                         pse.io_rchar = -1;
2044                         pse.io_wchar = -1;
2045                         pse.io_syscr = -1;
2046                         pse.io_syscw = -1;
2047
2048                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2049                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2050
2051                 switch (procs[i].ki_stat)
2052                 {
2053                         case SSTOP:     stopped++;      break;
2054                         case SSLEEP:    sleeping++;     break;
2055                         case SRUN:      running++;      break;
2056                         case SIDL:      idle++;         break;
2057                         case SWAIT:     wait++;         break;
2058                         case SLOCK:     blocked++;      break;
2059                         case SZOMB:     zombies++;      break;
2060                 }
2061         }
2062
2063         kvm_close(kd);
2064
2065         ps_submit_state ("running",  running);
2066         ps_submit_state ("sleeping", sleeping);
2067         ps_submit_state ("zombies",  zombies);
2068         ps_submit_state ("stopped",  stopped);
2069         ps_submit_state ("blocked",  blocked);
2070         ps_submit_state ("idle",     idle);
2071         ps_submit_state ("wait",     wait);
2072
2073         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2074                 ps_submit_proc_list (ps_ptr);
2075 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2076
2077 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2078         int running  = 0;
2079         int sleeping = 0;
2080         int zombies  = 0;
2081         int stopped  = 0;
2082         int onproc   = 0;
2083         int idle     = 0;
2084         int dead     = 0;
2085
2086         kvm_t *kd;
2087         char errbuf[1024];
2088         struct kinfo_proc *procs;          /* array of processes */
2089         struct kinfo_proc *proc_ptr = NULL;
2090         int count;                         /* returns number of processes */
2091         int i;
2092
2093         procstat_t *ps_ptr;
2094         procstat_entry_t pse;
2095
2096         ps_list_reset ();
2097
2098         /* Open the kvm interface, get a descriptor */
2099         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2100         if (kd == NULL)
2101         {
2102                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2103                                 errbuf);
2104                 return (0);
2105         }
2106
2107         /* Get the list of processes. */
2108         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2109         if (procs == NULL)
2110         {
2111                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2112                                 kvm_geterr(kd));
2113                 kvm_close (kd);
2114                 return (0);
2115         }
2116
2117         /* Iterate through the processes in kinfo_proc */
2118         for (i = 0; i < count; i++)
2119         {
2120                 /* Create only one process list entry per _process_, i.e.
2121                  * filter out threads (duplicate PID entries). */
2122                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2123                 {
2124                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2125                         _Bool have_cmdline = 0;
2126
2127                         proc_ptr = &(procs[i]);
2128                         /* Don't probe zombie processes  */
2129                         if (!P_ZOMBIE(proc_ptr))
2130                         {
2131                                 char **argv;
2132                                 int argc;
2133                                 int status;
2134
2135                                 /* retrieve the arguments */
2136                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2137                                 argc = 0;
2138                                 if ((argv != NULL) && (argv[0] != NULL))
2139                                 {
2140                                         while (argv[argc] != NULL)
2141                                                 argc++;
2142
2143                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2144                                         if (status < 0)
2145                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2146                                         else
2147                                                 have_cmdline = 1;
2148                                 }
2149                         } /* if (process has argument list) */
2150
2151                         pse.id       = procs[i].p_pid;
2152                         pse.age      = 0;
2153
2154                         pse.num_proc = 1;
2155                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2156
2157                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2158                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2159                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2160                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2161                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2162                         pse.vmem_minflt = 0;
2163                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2164                         pse.vmem_majflt = 0;
2165                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2166
2167                         pse.cpu_user = 0;
2168                         pse.cpu_system = 0;
2169                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2170                                                 (1000000lu * procs[i].p_uutime_sec);
2171                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2172                                                 (1000000lu * procs[i].p_ustime_sec);
2173
2174                         /* no I/O data */
2175                         pse.io_rchar = -1;
2176                         pse.io_wchar = -1;
2177                         pse.io_syscr = -1;
2178                         pse.io_syscw = -1;
2179
2180                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2181                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2182
2183                 switch (procs[i].p_stat)
2184                 {
2185                         case SSTOP:     stopped++;      break;
2186                         case SSLEEP:    sleeping++;     break;
2187                         case SRUN:      running++;      break;
2188                         case SIDL:      idle++;         break;
2189                         case SONPROC:   onproc++;       break;
2190                         case SDEAD:     dead++;         break;
2191                         case SZOMB:     zombies++;      break;
2192                 }
2193         }
2194
2195         kvm_close(kd);
2196
2197         ps_submit_state ("running",  running);
2198         ps_submit_state ("sleeping", sleeping);
2199         ps_submit_state ("zombies",  zombies);
2200         ps_submit_state ("stopped",  stopped);
2201         ps_submit_state ("onproc",   onproc);
2202         ps_submit_state ("idle",     idle);
2203         ps_submit_state ("dead",     dead);
2204
2205         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2206                 ps_submit_proc_list (ps_ptr);
2207 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2208
2209 #elif HAVE_PROCINFO_H
2210         /* AIX */
2211         int running  = 0;
2212         int sleeping = 0;
2213         int zombies  = 0;
2214         int stopped  = 0;
2215         int paging   = 0;
2216         int blocked  = 0;
2217
2218         pid_t pindex = 0;
2219         int nprocs;
2220
2221         procstat_t *ps;
2222         procstat_entry_t pse;
2223
2224         ps_list_reset ();
2225         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2226                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2227                                         &pindex, MAXPROCENTRY)) > 0)
2228         {
2229                 int i;
2230
2231                 for (i = 0; i < nprocs; i++)
2232                 {
2233                         tid64_t thindex;
2234                         int nthreads;
2235                         char arglist[MAXARGLN+1];
2236                         char *cargs;
2237                         char *cmdline;
2238
2239                         if (procentry[i].pi_state == SNONE) continue;
2240                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2241
2242                         cmdline = procentry[i].pi_comm;
2243                         cargs = procentry[i].pi_comm;
2244                         if ( procentry[i].pi_flags & SKPROC )
2245                         {
2246                                 if (procentry[i].pi_pid == 0)
2247                                         cmdline = "swapper";
2248                                 cargs = cmdline;
2249                         }
2250                         else
2251                         {
2252                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2253                                 {
2254                                         int n;
2255
2256                                         n = -1;
2257                                         while (++n < MAXARGLN)
2258                                         {
2259                                                 if (arglist[n] == '\0')
2260                                                 {
2261                                                         if (arglist[n+1] == '\0')
2262                                                                 break;
2263                                                         arglist[n] = ' ';
2264                                                 }
2265                                         }
2266                                         cargs = arglist;
2267                                 }
2268                         }
2269
2270                         pse.id       = procentry[i].pi_pid;
2271                         pse.age      = 0;
2272                         pse.num_lwp  = procentry[i].pi_thcount;
2273                         pse.num_proc = 1;
2274
2275                         thindex=0;
2276                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2277                                                         thrdentry, sizeof(struct thrdentry64),
2278                                                         &thindex, MAXTHRDENTRY)) > 0)
2279                         {
2280                                 int j;
2281
2282                                 for (j=0; j< nthreads; j++)
2283                                 {
2284                                         switch (thrdentry[j].ti_state)
2285                                         {
2286                                                 /* case TSNONE: break; */
2287                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2288                                                 case TSRUN:     running++;      break;
2289                                                 case TSSLEEP:   sleeping++;     break;
2290                                                 case TSSWAP:    paging++;       break;
2291                                                 case TSSTOP:    stopped++;      break;
2292                                                 case TSZOMB:    zombies++;      break;
2293                                         }
2294                                 }
2295                                 if (nthreads < MAXTHRDENTRY)
2296                                         break;
2297                         }
2298
2299                         pse.cpu_user = 0;
2300                         /* tv_usec is nanosec ??? */
2301                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2302                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2303
2304                         pse.cpu_system = 0;
2305                         /* tv_usec is nanosec ??? */
2306                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2307                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2308
2309                         pse.vmem_minflt = 0;
2310                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2311                         pse.vmem_majflt = 0;
2312                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2313
2314                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2315                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2316                         /* Not supported */
2317                         pse.vmem_data = 0;
2318                         pse.vmem_code = 0;
2319                         pse.stack_size =  0;
2320
2321                         pse.io_rchar = -1;
2322                         pse.io_wchar = -1;
2323                         pse.io_syscr = -1;
2324                         pse.io_syscw = -1;
2325
2326                         ps_list_add (cmdline, cargs, &pse);
2327                 } /* for (i = 0 .. nprocs) */
2328
2329                 if (nprocs < MAXPROCENTRY)
2330                         break;
2331         } /* while (getprocs64() > 0) */
2332         ps_submit_state ("running",  running);
2333         ps_submit_state ("sleeping", sleeping);
2334         ps_submit_state ("zombies",  zombies);
2335         ps_submit_state ("stopped",  stopped);
2336         ps_submit_state ("paging",   paging);
2337         ps_submit_state ("blocked",  blocked);
2338
2339         for (ps = list_head_g; ps != NULL; ps = ps->next)
2340                 ps_submit_proc_list (ps);
2341 /* #endif HAVE_PROCINFO_H */
2342
2343 #elif KERNEL_SOLARIS
2344         /*
2345          * The Solaris section adds a few more process states and removes some
2346          * process states compared to linux. Most notably there is no "PAGING"
2347          * and "BLOCKED" state for a process.  The rest is similar to the linux
2348          * code.
2349          */
2350         int running = 0;
2351         int sleeping = 0;
2352         int zombies = 0;
2353         int stopped = 0;
2354         int detached = 0;
2355         int daemon = 0;
2356         int system = 0;
2357         int orphan = 0;
2358
2359         struct dirent *ent;
2360         DIR *proc;
2361
2362         int status;
2363         procstat_t *ps_ptr;
2364         char state;
2365
2366         char cmdline[PRARGSZ];
2367
2368         ps_list_reset ();
2369
2370         proc = opendir ("/proc");
2371         if (proc == NULL)
2372                 return (-1);
2373
2374         while ((ent = readdir(proc)) != NULL)
2375         {
2376                 long pid;
2377                 struct procstat ps;
2378                 procstat_entry_t pse;
2379                 char *endptr;
2380
2381                 if (!isdigit ((int) ent->d_name[0]))
2382                         continue;
2383
2384                 pid = strtol (ent->d_name, &endptr, 10);
2385                 if (*endptr != 0) /* value didn't completely parse as a number */
2386                         continue;
2387
2388                 status = ps_read_process (pid, &ps, &state);
2389                 if (status != 0)
2390                 {
2391                         DEBUG("ps_read_process failed: %i", status);
2392                         continue;
2393                 }
2394
2395                 pse.id = pid;
2396                 pse.age = 0;
2397
2398                 pse.num_proc   = ps.num_proc;
2399                 pse.num_lwp    = ps.num_lwp;
2400                 pse.vmem_size  = ps.vmem_size;
2401                 pse.vmem_rss   = ps.vmem_rss;
2402                 pse.vmem_data  = ps.vmem_data;
2403                 pse.vmem_code  = ps.vmem_code;
2404                 pse.stack_size = ps.stack_size;
2405
2406                 pse.vmem_minflt = 0;
2407                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2408                 pse.vmem_majflt = 0;
2409                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2410
2411                 pse.cpu_user = 0;
2412                 pse.cpu_user_counter = ps.cpu_user_counter;
2413                 pse.cpu_system = 0;
2414                 pse.cpu_system_counter = ps.cpu_system_counter;
2415
2416                 pse.io_rchar = ps.io_rchar;
2417                 pse.io_wchar = ps.io_wchar;
2418                 pse.io_syscr = ps.io_syscr;
2419                 pse.io_syscw = ps.io_syscw;
2420
2421                 switch (state)
2422                 {
2423                         case 'R': running++;  break;
2424                         case 'S': sleeping++; break;
2425                         case 'E': detached++; break;
2426                         case 'Z': zombies++;  break;
2427                         case 'T': stopped++;  break;
2428                         case 'A': daemon++;   break;
2429                         case 'Y': system++;   break;
2430                         case 'O': orphan++;   break;
2431                 }
2432
2433
2434                 ps_list_add (ps.name,
2435                                 ps_get_cmdline (pid, cmdline, sizeof (cmdline)),
2436                                 &pse);
2437         } /* while(readdir) */
2438         closedir (proc);
2439
2440         ps_submit_state ("running",  running);
2441         ps_submit_state ("sleeping", sleeping);
2442         ps_submit_state ("zombies",  zombies);
2443         ps_submit_state ("stopped",  stopped);
2444         ps_submit_state ("detached", detached);
2445         ps_submit_state ("daemon",   daemon);
2446         ps_submit_state ("system",   system);
2447         ps_submit_state ("orphan",   orphan);
2448
2449         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2450                 ps_submit_proc_list (ps_ptr);
2451
2452         read_fork_rate();
2453 #endif /* KERNEL_SOLARIS */
2454
2455         return (0);
2456 } /* int ps_read */
2457
2458 void module_register (void)
2459 {
2460         plugin_register_complex_config ("processes", ps_config);
2461         plugin_register_init ("processes", ps_init);
2462         plugin_register_read ("processes", ps_read);
2463 } /* void module_register */