src/processes.c

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