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