src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005       Lyonel Vincent
   4  * Copyright (C) 2006-2008  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  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the
  12  * Free Software Foundation; either version 2 of the License, or (at your
  13  * option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  23  *
  24  * Authors:
  25  *   Lyonel Vincent <lyonel at ezix.org>
  26  *   Florian octo Forster <octo at verplant.org>
  27  *   Oleg King <king2 at kaluga.ru>
  28  *   Sebastian Harl <sh at tokkee.org>
  29  *   Andrés J. Díaz <ajdiaz at connectical.com>
  30  *   Manuel Sanmartin
  31  **/
  32
  33 #include "collectd.h"
  34 #include "common.h"
  35 #include "plugin.h"
  36 #include "configfile.h"
  37
  38 /* Include header files for the mach system, if they exist.. */
  39 #if HAVE_THREAD_INFO
  40 #  if HAVE_MACH_MACH_INIT_H
  41 #    include <mach/mach_init.h>
  42 #  endif
  43 #  if HAVE_MACH_HOST_PRIV_H
  44 #    include <mach/host_priv.h>
  45 #  endif
  46 #  if HAVE_MACH_MACH_ERROR_H
  47 #    include <mach/mach_error.h>
  48 #  endif
  49 #  if HAVE_MACH_MACH_HOST_H
  50 #    include <mach/mach_host.h>
  51 #  endif
  52 #  if HAVE_MACH_MACH_PORT_H
  53 #    include <mach/mach_port.h>
  54 #  endif
  55 #  if HAVE_MACH_MACH_TYPES_H
  56 #    include <mach/mach_types.h>
  57 #  endif
  58 #  if HAVE_MACH_MESSAGE_H
  59 #    include <mach/message.h>
  60 #  endif
  61 #  if HAVE_MACH_PROCESSOR_SET_H
  62 #    include <mach/processor_set.h>
  63 #  endif
  64 #  if HAVE_MACH_TASK_H
  65 #    include <mach/task.h>
  66 #  endif
  67 #  if HAVE_MACH_THREAD_ACT_H
  68 #    include <mach/thread_act.h>
  69 #  endif
  70 #  if HAVE_MACH_VM_REGION_H
  71 #    include <mach/vm_region.h>
  72 #  endif
  73 #  if HAVE_MACH_VM_MAP_H
  74 #    include <mach/vm_map.h>
  75 #  endif
  76 #  if HAVE_MACH_VM_PROT_H
  77 #    include <mach/vm_prot.h>
  78 #  endif
  79 #  if HAVE_SYS_SYSCTL_H
  80 #    include <sys/sysctl.h>
  81 #  endif
  82 /* #endif HAVE_THREAD_INFO */
  83
  84 #elif KERNEL_LINUX
  85 #  if HAVE_LINUX_CONFIG_H
  86 #    include <linux/config.h>
  87 #  endif
  88 #  ifndef CONFIG_HZ
  89 #    define CONFIG_HZ 100
  90 #  endif
  91 /* #endif KERNEL_LINUX */
  92
  93 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
  94 #  include <kvm.h>
  95 #  include <sys/param.h>
  96 #  include <sys/sysctl.h>
  97 #  include <sys/user.h>
  98 #  include <sys/proc.h>
  99 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 100
 101 #elif HAVE_PROCINFO_H
 102 #  include <procinfo.h>
 103 #  include <sys/types.h>
 104
 105 #define MAXPROCENTRY 32
 106 #define MAXTHRDENTRY 16
 107 #define MAXARGLN 1024
 108 /* #endif HAVE_PROCINFO_H */
 109
 110 #else
 111 # error "No applicable input method."
 112 #endif
 113
 114 #if HAVE_REGEX_H
 115 # include <regex.h>
 116 #endif
 117
 118 #ifndef ARG_MAX
 119 #  define ARG_MAX 4096
 120 #endif
 121
 122 #define BUFSIZE 256
 123
 124 static const char *config_keys[] =
 125 {
 126         "Process",
 127         "ProcessMatch"
 128 };
 129 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 130
 131 typedef struct procstat_entry_s
 132 {
 133         unsigned long id;
 134         unsigned long age;
 135
 136         unsigned long num_proc;
 137         unsigned long num_lwp;
 138         unsigned long vmem_size;
 139         unsigned long vmem_rss;
 140         unsigned long vmem_data;
 141         unsigned long vmem_code;
 142         unsigned long stack_size;
 143
 144         unsigned long vmem_minflt;
 145         unsigned long vmem_majflt;
 146         unsigned long vmem_minflt_counter;
 147         unsigned long vmem_majflt_counter;
 148
 149         unsigned long cpu_user;
 150         unsigned long cpu_system;
 151         unsigned long cpu_user_counter;
 152         unsigned long cpu_system_counter;
 153
 154         /* io data */
 155         derive_t io_rchar;
 156         derive_t io_wchar;
 157         derive_t io_syscr;
 158         derive_t io_syscw;
 159
 160         struct procstat_entry_s *next;
 161 } procstat_entry_t;
 162
 163 #define PROCSTAT_NAME_LEN 256
 164 typedef struct procstat
 165 {
 166         char          name[PROCSTAT_NAME_LEN];
 167 #if HAVE_REGEX_H
 168         regex_t *re;
 169 #endif
 170
 171         unsigned long num_proc;
 172         unsigned long num_lwp;
 173         unsigned long vmem_size;
 174         unsigned long vmem_rss;
 175         unsigned long vmem_data;
 176         unsigned long vmem_code;
 177         unsigned long stack_size;
 178
 179         unsigned long vmem_minflt_counter;
 180         unsigned long vmem_majflt_counter;
 181
 182         unsigned long cpu_user_counter;
 183         unsigned long cpu_system_counter;
 184
 185         /* io data */
 186         derive_t io_rchar;
 187         derive_t io_wchar;
 188         derive_t io_syscr;
 189         derive_t io_syscw;
 190
 191         struct procstat   *next;
 192         struct procstat_entry_s *instances;
 193 } procstat_t;
 194
 195 static procstat_t *list_head_g = NULL;
 196
 197 #if HAVE_THREAD_INFO
 198 static mach_port_t port_host_self;
 199 static mach_port_t port_task_self;
 200
 201 static processor_set_name_array_t pset_list;
 202 static mach_msg_type_number_t     pset_list_len;
 203 /* #endif HAVE_THREAD_INFO */
 204
 205 #elif KERNEL_LINUX
 206 static long pagesize_g;
 207 /* #endif KERNEL_LINUX */
 208
 209 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 210 /* no global variables */
 211 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 212
 213 #elif HAVE_PROCINFO_H
 214 static  struct procentry64 procentry[MAXPROCENTRY];
 215 static  struct thrdentry64 thrdentry[MAXTHRDENTRY];
 216 static int pagesize;
 217
 218 #ifndef _AIXVERSION_610
 219 int     getprocs64 (void *procsinfo, int sizproc, void *fdsinfo, int sizfd, pid_t *index, int count);
 220 int     getthrds64( pid_t, void *, int, tid64_t *, int );
 221 #endif
 222 int getargs (struct procentry64 *processBuffer, int bufferLen, char *argsBuffer, int argsLen);
 223 #endif /* HAVE_PROCINFO_H */
 224
 225 /* put name of process from config to list_head_g tree
 226    list_head_g is a list of 'procstat_t' structs with
 227    processes names we want to watch */
 228 static void ps_list_register (const char *name, const char *regexp)
 229 {
 230         procstat_t *new;
 231         procstat_t *ptr;
 232         int status;
 233
 234         new = (procstat_t *) malloc (sizeof (procstat_t));
 235         if (new == NULL)
 236         {
 237                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 238                 return;
 239         }
 240         memset (new, 0, sizeof (procstat_t));
 241         sstrncpy (new->name, name, sizeof (new->name));
 242
 243 #if HAVE_REGEX_H
 244         if (regexp != NULL)
 245         {
 246                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 247                 new->re = (regex_t *) malloc (sizeof (regex_t));
 248                 if (new->re == NULL)
 249                 {
 250                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 251                         sfree (new);
 252                         return;
 253                 }
 254
 255                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 256                 if (status != 0)
 257                 {
 258                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 259                         sfree(new->re);
 260                         return;
 261                 }
 262         }
 263 #else
 264         if (regexp != NULL)
 265         {
 266                 ERROR ("processes plugin: ps_list_register: "
 267                                 "Regular expression \"%s\" found in config "
 268                                 "file, but support for regular expressions "
 269                                 "has been disabled at compile time.",
 270                                 regexp);
 271                 sfree (new);
 272                 return;
 273         }
 274 #endif
 275
 276         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 277         {
 278                 if (strcmp (ptr->name, name) == 0)
 279                 {
 280                         WARNING ("processes plugin: You have configured more "
 281                                         "than one `Process' or "
 282                                         "`ProcessMatch' with the same name. "
 283                                         "All but the first setting will be "
 284                                         "ignored.");
 285                         sfree (new->re);
 286                         sfree (new);
 287                         return;
 288                 }
 289
 290                 if (ptr->next == NULL)
 291                         break;
 292         }
 293
 294         if (ptr == NULL)
 295                 list_head_g = new;
 296         else
 297                 ptr->next = new;
 298 } /* void ps_list_register */
 299
 300 /* try to match name against entry, returns 1 if success */
 301 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 302 {
 303 #if HAVE_REGEX_H
 304         if (ps->re != NULL)
 305         {
 306                 int status;
 307                 const char *str;
 308
 309                 str = cmdline;
 310                 if ((str == NULL) || (str[0] == 0))
 311                         str = name;
 312
 313                 assert (str != NULL);
 314
 315                 status = regexec (ps->re, str,
 316                                 /* nmatch = */ 0,
 317                                 /* pmatch = */ NULL,
 318                                 /* eflags = */ 0);
 319                 if (status == 0)
 320                         return (1);
 321         }
 322         else
 323 #endif
 324         if (strcmp (ps->name, name) == 0)
 325                 return (1);
 326
 327         return (0);
 328 } /* int ps_list_match */
 329
 330 /* add process entry to 'instances' of process 'name' (or refresh it) */
 331 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 332 {
 333         procstat_t *ps;
 334         procstat_entry_t *pse;
 335
 336         if (entry->id == 0)
 337                 return;
 338
 339         for (ps = list_head_g; ps != NULL; ps = ps->next)
 340         {
 341                 if ((ps_list_match (name, cmdline, ps)) == 0)
 342                         continue;
 343
 344                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 345                         if ((pse->id == entry->id) || (pse->next == NULL))
 346                                 break;
 347
 348                 if ((pse == NULL) || (pse->id != entry->id))
 349                 {
 350                         procstat_entry_t *new;
 351
 352                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 353                         if (new == NULL)
 354                                 return;
 355                         memset (new, 0, sizeof (procstat_entry_t));
 356                         new->id = entry->id;
 357
 358                         if (pse == NULL)
 359                                 ps->instances = new;
 360                         else
 361                                 pse->next = new;
 362
 363                         pse = new;
 364                 }
 365
 366                 pse->age = 0;
 367                 pse->num_proc   = entry->num_proc;
 368                 pse->num_lwp    = entry->num_lwp;
 369                 pse->vmem_size  = entry->vmem_size;
 370                 pse->vmem_rss   = entry->vmem_rss;
 371                 pse->vmem_data  = entry->vmem_data;
 372                 pse->vmem_code  = entry->vmem_code;
 373                 pse->stack_size = entry->stack_size;
 374                 pse->io_rchar   = entry->io_rchar;
 375                 pse->io_wchar   = entry->io_wchar;
 376                 pse->io_syscr   = entry->io_syscr;
 377                 pse->io_syscw   = entry->io_syscw;
 378
 379                 ps->num_proc   += pse->num_proc;
 380                 ps->num_lwp    += pse->num_lwp;
 381                 ps->vmem_size  += pse->vmem_size;
 382                 ps->vmem_rss   += pse->vmem_rss;
 383                 ps->vmem_data  += pse->vmem_data;
 384                 ps->vmem_code  += pse->vmem_code;
 385                 ps->stack_size += pse->stack_size;
 386
 387                 ps->io_rchar   += ((pse->io_rchar == -1)?0:pse->io_rchar);
 388                 ps->io_wchar   += ((pse->io_wchar == -1)?0:pse->io_wchar);
 389                 ps->io_syscr   += ((pse->io_syscr == -1)?0:pse->io_syscr);
 390                 ps->io_syscw   += ((pse->io_syscw == -1)?0:pse->io_syscw);
 391
 392                 if ((entry->vmem_minflt_counter == 0)
 393                                 && (entry->vmem_majflt_counter == 0))
 394                 {
 395                         pse->vmem_minflt_counter += entry->vmem_minflt;
 396                         pse->vmem_minflt = entry->vmem_minflt;
 397
 398                         pse->vmem_majflt_counter += entry->vmem_majflt;
 399                         pse->vmem_majflt = entry->vmem_majflt;
 400                 }
 401                 else
 402                 {
 403                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 404                         {
 405                                 pse->vmem_minflt = entry->vmem_minflt_counter
 406                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 407                         }
 408                         else
 409                         {
 410                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 411                         }
 412                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 413
 414                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 415                         {
 416                                 pse->vmem_majflt = entry->vmem_majflt_counter
 417                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 418                         }
 419                         else
 420                         {
 421                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 422                         }
 423                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 424                 }
 425
 426                 ps->vmem_minflt_counter += pse->vmem_minflt;
 427                 ps->vmem_majflt_counter += pse->vmem_majflt;
 428
 429                 if ((entry->cpu_user_counter == 0)
 430                                 && (entry->cpu_system_counter == 0))
 431                 {
 432                         pse->cpu_user_counter += entry->cpu_user;
 433                         pse->cpu_user = entry->cpu_user;
 434
 435                         pse->cpu_system_counter += entry->cpu_system;
 436                         pse->cpu_system = entry->cpu_system;
 437                 }
 438                 else
 439                 {
 440                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 441                         {
 442                                 pse->cpu_user = entry->cpu_user_counter
 443                                         + (ULONG_MAX - pse->cpu_user_counter);
 444                         }
 445                         else
 446                         {
 447                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 448                         }
 449                         pse->cpu_user_counter = entry->cpu_user_counter;
 450
 451                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 452                         {
 453                                 pse->cpu_system = entry->cpu_system_counter
 454                                         + (ULONG_MAX - pse->cpu_system_counter);
 455                         }
 456                         else
 457                         {
 458                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 459                         }
 460                         pse->cpu_system_counter = entry->cpu_system_counter;
 461                 }
 462
 463                 ps->cpu_user_counter   += pse->cpu_user;
 464                 ps->cpu_system_counter += pse->cpu_system;
 465         }
 466 }
 467
 468 /* remove old entries from instances of processes in list_head_g */
 469 static void ps_list_reset (void)
 470 {
 471         procstat_t *ps;
 472         procstat_entry_t *pse;
 473         procstat_entry_t *pse_prev;
 474
 475         for (ps = list_head_g; ps != NULL; ps = ps->next)
 476         {
 477                 ps->num_proc    = 0;
 478                 ps->num_lwp     = 0;
 479                 ps->vmem_size   = 0;
 480                 ps->vmem_rss    = 0;
 481                 ps->vmem_data   = 0;
 482                 ps->vmem_code   = 0;
 483                 ps->stack_size  = 0;
 484                 ps->io_rchar = -1;
 485                 ps->io_wchar = -1;
 486                 ps->io_syscr = -1;
 487                 ps->io_syscw = -1;
 488
 489                 pse_prev = NULL;
 490                 pse = ps->instances;
 491                 while (pse != NULL)
 492                 {
 493                         if (pse->age > 10)
 494                         {
 495                                 DEBUG ("Removing this procstat entry cause it's too old: "
 496                                                 "id = %lu; name = %s;",
 497                                                 pse->id, ps->name);
 498
 499                                 if (pse_prev == NULL)
 500                                 {
 501                                         ps->instances = pse->next;
 502                                         free (pse);
 503                                         pse = ps->instances;
 504                                 }
 505                                 else
 506                                 {
 507                                         pse_prev->next = pse->next;
 508                                         free (pse);
 509                                         pse = pse_prev->next;
 510                                 }
 511                         }
 512                         else
 513                         {
 514                                 pse->age++;
 515                                 pse_prev = pse;
 516                                 pse = pse->next;
 517                         }
 518                 } /* while (pse != NULL) */
 519         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 520 }
 521
 522 /* put all pre-defined 'Process' names from config to list_head_g tree */
 523 static int ps_config (const char *key, const char *value)
 524 {
 525         if (strcasecmp (key, "Process") == 0)
 526         {
 527                 ps_list_register (value, NULL);
 528         }
 529         else if (strcasecmp (key, "ProcessMatch") == 0)
 530         {
 531                 char *new_val;
 532                 char *fields[3];
 533                 int fields_num;
 534
 535                 new_val = strdup (value);
 536                 if (new_val == NULL) {
 537                         ERROR ("processes plugin: strdup failed when processing "
 538                                         "`ProcessMatch %s'.", value);
 539                         return (1);
 540                 }
 541
 542                 fields_num = strsplit (new_val, fields,
 543                                 STATIC_ARRAY_SIZE (fields));
 544                 if (fields_num != 2)
 545                 {
 546                         ERROR ("processes plugin: `ProcessMatch' needs exactly "
 547                                         "two string arguments.");
 548                         sfree (new_val);
 549                         return (1);
 550                 }
 551                 ps_list_register (fields[0], fields[1]);
 552                 sfree (new_val);
 553         }
 554         else
 555         {
 556                 ERROR ("processes plugin: The `%s' configuration option is not "
 557                                 "understood and will be ignored.", key);
 558                 return (-1);
 559         }
 560
 561         return (0);
 562 }
 563
 564 static int ps_init (void)
 565 {
 566 #if HAVE_THREAD_INFO
 567         kern_return_t status;
 568
 569         port_host_self = mach_host_self ();
 570         port_task_self = mach_task_self ();
 571
 572         if (pset_list != NULL)
 573         {
 574                 vm_deallocate (port_task_self,
 575                                 (vm_address_t) pset_list,
 576                                 pset_list_len * sizeof (processor_set_t));
 577                 pset_list = NULL;
 578                 pset_list_len = 0;
 579         }
 580
 581         if ((status = host_processor_sets (port_host_self,
 582                                         &pset_list,
 583                                         &pset_list_len)) != KERN_SUCCESS)
 584         {
 585                 ERROR ("host_processor_sets failed: %s\n",
 586                                 mach_error_string (status));
 587                 pset_list = NULL;
 588                 pset_list_len = 0;
 589                 return (-1);
 590         }
 591 /* #endif HAVE_THREAD_INFO */
 592
 593 #elif KERNEL_LINUX
 594         pagesize_g = sysconf(_SC_PAGESIZE);
 595         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 596                         pagesize_g, CONFIG_HZ);
 597 /* #endif KERNEL_LINUX */
 598
 599 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
 600 /* no initialization */
 601 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
 602
 603 #elif HAVE_PROCINFO_H
 604         pagesize = getpagesize();
 605 #endif /* HAVE_PROCINFO_H */
 606
 607         return (0);
 608 } /* int ps_init */
 609
 610 /* submit global state (e.g.: qty of zombies, running, etc..) */
 611 static void ps_submit_state (const char *state, double value)
 612 {
 613         value_t values[1];
 614         value_list_t vl = VALUE_LIST_INIT;
 615
 616         values[0].gauge = value;
 617
 618         vl.values = values;
 619         vl.values_len = 1;
 620         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 621         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 622         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 623         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 624         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 625
 626         plugin_dispatch_values (&vl);
 627 }
 628
 629 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 630 static void ps_submit_proc_list (procstat_t *ps)
 631 {
 632         value_t values[2];
 633         value_list_t vl = VALUE_LIST_INIT;
 634
 635         vl.values = values;
 636         vl.values_len = 2;
 637         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 638         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 639         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 640
 641         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 642         vl.values[0].gauge = ps->vmem_size;
 643         vl.values_len = 1;
 644         plugin_dispatch_values (&vl);
 645
 646         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 647         vl.values[0].gauge = ps->vmem_rss;
 648         vl.values_len = 1;
 649         plugin_dispatch_values (&vl);
 650
 651         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 652         vl.values[0].gauge = ps->vmem_data;
 653         vl.values_len = 1;
 654         plugin_dispatch_values (&vl);
 655
 656         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 657         vl.values[0].gauge = ps->vmem_code;
 658         vl.values_len = 1;
 659         plugin_dispatch_values (&vl);
 660
 661         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 662         vl.values[0].gauge = ps->stack_size;
 663         vl.values_len = 1;
 664         plugin_dispatch_values (&vl);
 665
 666         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 667         vl.values[0].counter = ps->cpu_user_counter;
 668         vl.values[1].counter = ps->cpu_system_counter;
 669         vl.values_len = 2;
 670         plugin_dispatch_values (&vl);
 671
 672         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 673         vl.values[0].gauge = ps->num_proc;
 674         vl.values[1].gauge = ps->num_lwp;
 675         vl.values_len = 2;
 676         plugin_dispatch_values (&vl);
 677
 678         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 679         vl.values[0].counter = ps->vmem_minflt_counter;
 680         vl.values[1].counter = ps->vmem_majflt_counter;
 681         vl.values_len = 2;
 682         plugin_dispatch_values (&vl);
 683
 684         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 685         {
 686                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 687                 vl.values[0].derive = ps->io_rchar;
 688                 vl.values[1].derive = ps->io_wchar;
 689                 vl.values_len = 2;
 690                 plugin_dispatch_values (&vl);
 691         }
 692
 693         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 694         {
 695                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 696                 vl.values[0].derive = ps->io_syscr;
 697                 vl.values[1].derive = ps->io_syscw;
 698                 vl.values_len = 2;
 699                 plugin_dispatch_values (&vl);
 700         }
 701
 702         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 703                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 704                         "vmem_code = %lu; "
 705                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 706                         "cpu_user_counter = %lu; cpu_system_counter = %lu; "
 707                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 708                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64";",
 709                         ps->name, ps->num_proc, ps->num_lwp,
 710                         ps->vmem_size, ps->vmem_rss,
 711                         ps->vmem_data, ps->vmem_code,
 712                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 713                         ps->cpu_user_counter, ps->cpu_system_counter,
 714                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw);
 715 } /* void ps_submit_proc_list */
 716
 717 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 718 #if KERNEL_LINUX
 719 static int ps_read_tasks (int pid)
 720 {
 721         char           dirname[64];
 722         DIR           *dh;
 723         struct dirent *ent;
 724         int count = 0;
 725
 726         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 727
 728         if ((dh = opendir (dirname)) == NULL)
 729         {
 730                 DEBUG ("Failed to open directory `%s'", dirname);
 731                 return (-1);
 732         }
 733
 734         while ((ent = readdir (dh)) != NULL)
 735         {
 736                 if (!isdigit ((int) ent->d_name[0]))
 737                         continue;
 738                 else
 739                         count++;
 740         }
 741         closedir (dh);
 742
 743         return ((count >= 1) ? count : 1);
 744 } /* int *ps_read_tasks */
 745
 746 /* Read advanced virtual memory data from /proc/pid/status */
 747 static procstat_t *ps_read_vmem (int pid, procstat_t *ps)
 748 {
 749         FILE *fh;
 750         char buffer[1024];
 751         char filename[64];
 752         unsigned long long lib = 0;
 753         unsigned long long exe = 0;
 754         unsigned long long data = 0;
 755         char *fields[8];
 756         int numfields;
 757
 758         ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
 759         if ((fh = fopen (filename, "r")) == NULL)
 760                 return (NULL);
 761
 762         while (fgets (buffer, 1024, fh) != NULL)
 763         {
 764                 long long tmp;
 765                 char *endptr;
 766
 767                 if (strncasecmp (buffer, "Vm", 2) != 0)
 768                         continue;
 769
 770                 numfields = strsplit (buffer, fields, 8);
 771
 772                 if (numfields < 2)
 773                         continue;
 774
 775                 errno = 0;
 776                 endptr = NULL;
 777                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 778                 if ((errno == 0) && (endptr != fields[1]))
 779                 {
 780                         if (strncmp (buffer, "VmData", 6) == 0)
 781                         {
 782                                 data = tmp;
 783                         }
 784                         else if (strncmp (buffer, "VmLib", 5) == 0)
 785                         {
 786                                 lib = tmp;
 787                         }
 788                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 789                         {
 790                                 exe = tmp;
 791                         }
 792                 }
 793         } /* while (fgets) */
 794
 795         if (fclose (fh))
 796         {
 797                 char errbuf[1024];
 798                 WARNING ("processes: fclose: %s",
 799                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 800         }
 801
 802         ps->vmem_data = data * 1024;
 803         ps->vmem_code = (exe + lib) * 1024;
 804
 805         return (ps);
 806 } /* procstat_t *ps_read_vmem */
 807
 808 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 809 {
 810         FILE *fh;
 811         char buffer[1024];
 812         char filename[64];
 813
 814         char *fields[8];
 815         int numfields;
 816
 817         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 818         if ((fh = fopen (filename, "r")) == NULL)
 819                 return (NULL);
 820
 821         while (fgets (buffer, 1024, fh) != NULL)
 822         {
 823                 derive_t *val = NULL;
 824                 long long tmp;
 825                 char *endptr;
 826
 827                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 828                         val = &(ps->io_rchar);
 829                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 830                         val = &(ps->io_wchar);
 831                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 832                         val = &(ps->io_syscr);
 833                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 834                         val = &(ps->io_syscw);
 835                 else
 836                         continue;
 837
 838                 numfields = strsplit (buffer, fields, 8);
 839
 840                 if (numfields < 2)
 841                         continue;
 842
 843                 errno = 0;
 844                 endptr = NULL;
 845                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 846                 if ((errno != 0) || (endptr == fields[1]))
 847                         *val = -1;
 848                 else
 849                         *val = (derive_t) tmp;
 850         } /* while (fgets) */
 851
 852         if (fclose (fh))
 853         {
 854                 char errbuf[1024];
 855                 WARNING ("processes: fclose: %s",
 856                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 857         }
 858
 859         return (ps);
 860 } /* procstat_t *ps_read_io */
 861
 862 int ps_read_process (int pid, procstat_t *ps, char *state)
 863 {
 864         char  filename[64];
 865         char  buffer[1024];
 866
 867         char *fields[64];
 868         char  fields_len;
 869
 870         int   i;
 871
 872         int   ppid;
 873         int   name_len;
 874
 875         long long unsigned cpu_user_counter;
 876         long long unsigned cpu_system_counter;
 877         long long unsigned vmem_size;
 878         long long unsigned vmem_rss;
 879         long long unsigned stack_size;
 880
 881         memset (ps, 0, sizeof (procstat_t));
 882
 883         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 884
 885         i = read_file_contents (filename, buffer, sizeof(buffer) - 1);
 886         if (i <= 0)
 887                 return (-1);
 888         buffer[i] = 0;
 889
 890         fields_len = strsplit (buffer, fields, 64);
 891         if (fields_len < 24)
 892         {
 893                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 894                                 " `%s' has only %i fields..",
 895                                 (int) pid, filename, fields_len);
 896                 return (-1);
 897         }
 898
 899         /* copy the name, strip brackets in the process */
 900         name_len = strlen (fields[1]) - 2;
 901         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 902         {
 903                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 904                 return (-1);
 905         }
 906         fields[1] = fields[1] + 1;
 907         fields[1][name_len] = '\0';
 908         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 909
 910         ppid = atoi (fields[3]);
 911
 912         *state = fields[2][0];
 913
 914         if (*state == 'Z')
 915         {
 916                 ps->num_lwp  = 0;
 917                 ps->num_proc = 0;
 918         }
 919         else
 920         {
 921                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
 922                 {
 923                         /* returns -1 => kernel 2.4 */
 924                         ps->num_lwp = 1;
 925                 }
 926                 ps->num_proc = 1;
 927         }
 928
 929         /* Leave the rest at zero if this is only a zombi */
 930         if (ps->num_proc == 0)
 931         {
 932                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 933                                 "name = %s;", pid, ps->name);
 934                 return (0);
 935         }
 936
 937         cpu_user_counter   = atoll (fields[13]);
 938         cpu_system_counter = atoll (fields[14]);
 939         vmem_size          = atoll (fields[22]);
 940         vmem_rss           = atoll (fields[23]);
 941         ps->vmem_minflt_counter = atol (fields[9]);
 942         ps->vmem_majflt_counter = atol (fields[11]);
 943
 944         {
 945                 unsigned long long stack_start = atoll (fields[27]);
 946                 unsigned long long stack_ptr   = atoll (fields[28]);
 947
 948                 stack_size = (stack_start > stack_ptr)
 949                         ? stack_start - stack_ptr
 950                         : stack_ptr - stack_start;
 951         }
 952
 953         /* Convert jiffies to useconds */
 954         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 955         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 956         vmem_rss = vmem_rss * pagesize_g;
 957
 958         if ( (ps_read_vmem(pid, ps)) == NULL)
 959         {
 960                 /* No VMem data */
 961                 ps->vmem_data = -1;
 962                 ps->vmem_code = -1;
 963                 DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
 964         }
 965
 966         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 967         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 968         ps->vmem_size = (unsigned long) vmem_size;
 969         ps->vmem_rss = (unsigned long) vmem_rss;
 970         ps->stack_size = (unsigned long) stack_size;
 971
 972         if ( (ps_read_io (pid, ps)) == NULL)
 973         {
 974                 /* no io data */
 975                 ps->io_rchar = -1;
 976                 ps->io_wchar = -1;
 977                 ps->io_syscr = -1;
 978                 ps->io_syscw = -1;
 979
 980                 DEBUG("ps_read_process: not get io data for pid %i",pid);
 981         }
 982
 983         /* success */
 984         return (0);
 985 } /* int ps_read_process (...) */
 986
 987 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
 988 {
 989         char  *buf_ptr;
 990         size_t len;
 991
 992         char file[PATH_MAX];
 993         int  fd;
 994
 995         size_t n;
 996
 997         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
 998                 return NULL;
 999
1000         ssnprintf (file, sizeof (file), "/proc/%u/cmdline", pid);
1001
1002         fd = open (file, O_RDONLY);
1003         if (fd < 0) {
1004                 char errbuf[4096];
1005                 WARNING ("processes plugin: Failed to open `%s': %s.", file,
1006                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1007                 return NULL;
1008         }
1009
1010         buf_ptr = buf;
1011         len     = buf_len;
1012
1013         n = 0;
1014
1015         while (42) {
1016                 ssize_t status;
1017
1018                 status = read (fd, (void *)buf_ptr, len);
1019
1020                 if (status < 0) {
1021                         char errbuf[4096];
1022
1023                         if ((EAGAIN == errno) || (EINTR == errno))
1024                                 continue;
1025
1026                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1027                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1028                         close (fd);
1029                         return NULL;
1030                 }
1031
1032                 n += status;
1033
1034                 if (status == 0)
1035                         break;
1036
1037                 buf_ptr += status;
1038                 len     -= status;
1039
1040                 if (len <= 0)
1041                         break;
1042         }
1043
1044         close (fd);
1045
1046         if (0 == n) {
1047                 /* cmdline not available; e.g. kernel thread, zombie */
1048                 if (NULL == name)
1049                         return NULL;
1050
1051                 ssnprintf (buf, buf_len, "[%s]", name);
1052                 return buf;
1053         }
1054
1055         assert (n <= buf_len);
1056
1057         if (n == buf_len)
1058                 --n;
1059         buf[n] = '\0';
1060
1061         --n;
1062         /* remove trailing whitespace */
1063         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1064                 buf[n] = '\0';
1065                 --n;
1066         }
1067
1068         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1069         while (n > 0) {
1070                 if ('\0' == buf[n])
1071                         buf[n] = ' ';
1072                 --n;
1073         }
1074         return buf;
1075 } /* char *ps_get_cmdline (...) */
1076
1077 static unsigned long read_fork_rate ()
1078 {
1079         FILE *proc_stat;
1080         char buf[1024];
1081         unsigned long result = 0;
1082         int numfields;
1083         char *fields[3];
1084
1085         proc_stat = fopen("/proc/stat", "r");
1086         if (proc_stat == NULL) {
1087                 char errbuf[1024];
1088                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1089                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1090                 return ULONG_MAX;
1091         }
1092
1093         while (fgets (buf, sizeof(buf), proc_stat) != NULL)
1094         {
1095                 char *endptr;
1096
1097                 numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE (fields));
1098                 if (numfields != 2)
1099                         continue;
1100
1101                 if (strcmp ("processes", fields[0]) != 0)
1102                         continue;
1103
1104                 errno = 0;
1105                 endptr = NULL;
1106                 result = strtoul(fields[1], &endptr, 10);
1107                 if ((endptr == fields[1]) || (errno != 0)) {
1108                         ERROR ("processes plugin: Cannot parse fork rate: %s",
1109                                         fields[1]);
1110                         result = ULONG_MAX;
1111                         break;
1112                 }
1113
1114                 break;
1115         }
1116
1117         fclose(proc_stat);
1118
1119         return result;
1120 }
1121
1122 static void ps_submit_fork_rate (unsigned long value)
1123 {
1124         value_t values[1];
1125         value_list_t vl = VALUE_LIST_INIT;
1126
1127         values[0].derive = (derive_t) value;
1128
1129         vl.values = values;
1130         vl.values_len = 1;
1131         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
1132         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
1133         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
1134         sstrncpy (vl.type, "fork_rate", sizeof (vl.type));
1135         sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
1136
1137         plugin_dispatch_values (&vl);
1138 }
1139
1140 #endif /* KERNEL_LINUX */
1141
1142 #if HAVE_THREAD_INFO
1143 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1144 {
1145         int mib[4];
1146
1147         struct kinfo_proc kp;
1148         size_t            kp_size;
1149
1150         mib[0] = CTL_KERN;
1151         mib[1] = KERN_PROC;
1152         mib[2] = KERN_PROC_PID;
1153
1154         if (pid_for_task (t, pid) != KERN_SUCCESS)
1155                 return (-1);
1156         mib[3] = *pid;
1157
1158         kp_size = sizeof (kp);
1159         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1160                 return (-1);
1161
1162         if (name_max_len > (MAXCOMLEN + 1))
1163                 name_max_len = MAXCOMLEN + 1;
1164
1165         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1166         name[name_max_len - 1] = '\0';
1167
1168         DEBUG ("pid = %i; name = %s;", *pid, name);
1169
1170         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1171          * `top' does it, because it is a lot of work and only used when
1172          * debugging. -octo */
1173
1174         return (0);
1175 }
1176 #endif /* HAVE_THREAD_INFO */
1177 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1178
1179 /* do actual readings from kernel */
1180 static int ps_read (void)
1181 {
1182 #if HAVE_THREAD_INFO
1183         kern_return_t            status;
1184
1185         int                      pset;
1186         processor_set_t          port_pset_priv;
1187
1188         int                      task;
1189         task_array_t             task_list;
1190         mach_msg_type_number_t   task_list_len;
1191
1192         int                      task_pid;
1193         char                     task_name[MAXCOMLEN + 1];
1194
1195         int                      thread;
1196         thread_act_array_t       thread_list;
1197         mach_msg_type_number_t   thread_list_len;
1198         thread_basic_info_data_t thread_data;
1199         mach_msg_type_number_t   thread_data_len;
1200
1201         int running  = 0;
1202         int sleeping = 0;
1203         int zombies  = 0;
1204         int stopped  = 0;
1205         int blocked  = 0;
1206
1207         procstat_t *ps;
1208         procstat_entry_t pse;
1209
1210         ps_list_reset ();
1211
1212         /*
1213          * The Mach-concept is a little different from the traditional UNIX
1214          * concept: All the work is done in threads. Threads are contained in
1215          * `tasks'. Therefore, `task status' doesn't make much sense, since
1216          * it's actually a `thread status'.
1217          * Tasks are assigned to sets of processors, so that's where you go to
1218          * get a list.
1219          */
1220         for (pset = 0; pset < pset_list_len; pset++)
1221         {
1222                 if ((status = host_processor_set_priv (port_host_self,
1223                                                 pset_list[pset],
1224                                                 &port_pset_priv)) != KERN_SUCCESS)
1225                 {
1226                         ERROR ("host_processor_set_priv failed: %s\n",
1227                                         mach_error_string (status));
1228                         continue;
1229                 }
1230
1231                 if ((status = processor_set_tasks (port_pset_priv,
1232                                                 &task_list,
1233                                                 &task_list_len)) != KERN_SUCCESS)
1234                 {
1235                         ERROR ("processor_set_tasks failed: %s\n",
1236                                         mach_error_string (status));
1237                         mach_port_deallocate (port_task_self, port_pset_priv);
1238                         continue;
1239                 }
1240
1241                 for (task = 0; task < task_list_len; task++)
1242                 {
1243                         ps = NULL;
1244                         if (mach_get_task_name (task_list[task],
1245                                                 &task_pid,
1246                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1247                         {
1248                                 /* search for at least one match */
1249                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1250                                         /* FIXME: cmdline should be here instead of NULL */
1251                                         if (ps_list_match (task_name, NULL, ps) == 1)
1252                                                 break;
1253                         }
1254
1255                         /* Collect more detailed statistics for this process */
1256                         if (ps != NULL)
1257                         {
1258                                 task_basic_info_data_t        task_basic_info;
1259                                 mach_msg_type_number_t        task_basic_info_len;
1260                                 task_events_info_data_t       task_events_info;
1261                                 mach_msg_type_number_t        task_events_info_len;
1262                                 task_absolutetime_info_data_t task_absolutetime_info;
1263                                 mach_msg_type_number_t        task_absolutetime_info_len;
1264
1265                                 memset (&pse, '\0', sizeof (pse));
1266                                 pse.id = task_pid;
1267
1268                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1269                                 status = task_info (task_list[task],
1270                                                 TASK_BASIC_INFO,
1271                                                 (task_info_t) &task_basic_info,
1272                                                 &task_basic_info_len);
1273                                 if (status != KERN_SUCCESS)
1274                                 {
1275                                         ERROR ("task_info failed: %s",
1276                                                         mach_error_string (status));
1277                                         continue; /* with next thread_list */
1278                                 }
1279
1280                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1281                                 status = task_info (task_list[task],
1282                                                 TASK_EVENTS_INFO,
1283                                                 (task_info_t) &task_events_info,
1284                                                 &task_events_info_len);
1285                                 if (status != KERN_SUCCESS)
1286                                 {
1287                                         ERROR ("task_info failed: %s",
1288                                                         mach_error_string (status));
1289                                         continue; /* with next thread_list */
1290                                 }
1291
1292                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1293                                 status = task_info (task_list[task],
1294                                                 TASK_ABSOLUTETIME_INFO,
1295                                                 (task_info_t) &task_absolutetime_info,
1296                                                 &task_absolutetime_info_len);
1297                                 if (status != KERN_SUCCESS)
1298                                 {
1299                                         ERROR ("task_info failed: %s",
1300                                                         mach_error_string (status));
1301                                         continue; /* with next thread_list */
1302                                 }
1303
1304                                 pse.num_proc++;
1305                                 pse.vmem_rss = task_basic_info.resident_size;
1306                                 /* Does not seem to be easily exposed */
1307                                 pse.vmem_data = 0;
1308                                 pse.vmem_code = 0;
1309
1310                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1311                                 pse.vmem_majflt_counter = task_events_info.faults;
1312
1313                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1314                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1315                         }
1316
1317                         status = task_threads (task_list[task], &thread_list,
1318                                         &thread_list_len);
1319                         if (status != KERN_SUCCESS)
1320                         {
1321                                 /* Apple's `top' treats this case a zombie. It
1322                                  * makes sense to some extend: A `zombie'
1323                                  * thread is nonsense, since the task/process
1324                                  * is dead. */
1325                                 zombies++;
1326                                 DEBUG ("task_threads failed: %s",
1327                                                 mach_error_string (status));
1328                                 if (task_list[task] != port_task_self)
1329                                         mach_port_deallocate (port_task_self,
1330                                                         task_list[task]);
1331                                 continue; /* with next task_list */
1332                         }
1333
1334                         for (thread = 0; thread < thread_list_len; thread++)
1335                         {
1336                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1337                                 status = thread_info (thread_list[thread],
1338                                                 THREAD_BASIC_INFO,
1339                                                 (thread_info_t) &thread_data,
1340                                                 &thread_data_len);
1341                                 if (status != KERN_SUCCESS)
1342                                 {
1343                                         ERROR ("thread_info failed: %s",
1344                                                         mach_error_string (status));
1345                                         if (task_list[task] != port_task_self)
1346                                                 mach_port_deallocate (port_task_self,
1347                                                                 thread_list[thread]);
1348                                         continue; /* with next thread_list */
1349                                 }
1350
1351                                 if (ps != NULL)
1352                                         pse.num_lwp++;
1353
1354                                 switch (thread_data.run_state)
1355                                 {
1356                                         case TH_STATE_RUNNING:
1357                                                 running++;
1358                                                 break;
1359                                         case TH_STATE_STOPPED:
1360                                         /* What exactly is `halted'? */
1361                                         case TH_STATE_HALTED:
1362                                                 stopped++;
1363                                                 break;
1364                                         case TH_STATE_WAITING:
1365                                                 sleeping++;
1366                                                 break;
1367                                         case TH_STATE_UNINTERRUPTIBLE:
1368                                                 blocked++;
1369                                                 break;
1370                                         /* There is no `zombie' case here,
1371                                          * since there are no zombie-threads.
1372                                          * There's only zombie tasks, which are
1373                                          * handled above. */
1374                                         default:
1375                                                 WARNING ("Unknown thread status: %i",
1376                                                                 thread_data.run_state);
1377                                                 break;
1378                                 } /* switch (thread_data.run_state) */
1379
1380                                 if (task_list[task] != port_task_self)
1381                                 {
1382                                         status = mach_port_deallocate (port_task_self,
1383                                                         thread_list[thread]);
1384                                         if (status != KERN_SUCCESS)
1385                                                 ERROR ("mach_port_deallocate failed: %s",
1386                                                                 mach_error_string (status));
1387                                 }
1388                         } /* for (thread_list) */
1389
1390                         if ((status = vm_deallocate (port_task_self,
1391                                                         (vm_address_t) thread_list,
1392                                                         thread_list_len * sizeof (thread_act_t)))
1393                                         != KERN_SUCCESS)
1394                         {
1395                                 ERROR ("vm_deallocate failed: %s",
1396                                                 mach_error_string (status));
1397                         }
1398                         thread_list = NULL;
1399                         thread_list_len = 0;
1400
1401                         /* Only deallocate the task port, if it isn't our own.
1402                          * Don't know what would happen in that case, but this
1403                          * is what Apple's top does.. ;) */
1404                         if (task_list[task] != port_task_self)
1405                         {
1406                                 status = mach_port_deallocate (port_task_self,
1407                                                 task_list[task]);
1408                                 if (status != KERN_SUCCESS)
1409                                         ERROR ("mach_port_deallocate failed: %s",
1410                                                         mach_error_string (status));
1411                         }
1412
1413                         if (ps != NULL)
1414                                 /* FIXME: cmdline should be here instead of NULL */
1415                                 ps_list_add (task_name, NULL, &pse);
1416                 } /* for (task_list) */
1417
1418                 if ((status = vm_deallocate (port_task_self,
1419                                 (vm_address_t) task_list,
1420                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1421                 {
1422                         ERROR ("vm_deallocate failed: %s",
1423                                         mach_error_string (status));
1424                 }
1425                 task_list = NULL;
1426                 task_list_len = 0;
1427
1428                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1429                                 != KERN_SUCCESS)
1430                 {
1431                         ERROR ("mach_port_deallocate failed: %s",
1432                                         mach_error_string (status));
1433                 }
1434         } /* for (pset_list) */
1435
1436         ps_submit_state ("running", running);
1437         ps_submit_state ("sleeping", sleeping);
1438         ps_submit_state ("zombies", zombies);
1439         ps_submit_state ("stopped", stopped);
1440         ps_submit_state ("blocked", blocked);
1441
1442         for (ps = list_head_g; ps != NULL; ps = ps->next)
1443                 ps_submit_proc_list (ps);
1444 /* #endif HAVE_THREAD_INFO */
1445
1446 #elif KERNEL_LINUX
1447         int running  = 0;
1448         int sleeping = 0;
1449         int zombies  = 0;
1450         int stopped  = 0;
1451         int paging   = 0;
1452         int blocked  = 0;
1453
1454         struct dirent *ent;
1455         DIR           *proc;
1456         int            pid;
1457
1458         char cmdline[ARG_MAX];
1459
1460         int        status;
1461         procstat_t ps;
1462         procstat_entry_t pse;
1463         char       state;
1464
1465         unsigned long fork_rate;
1466
1467         procstat_t *ps_ptr;
1468
1469         running = sleeping = zombies = stopped = paging = blocked = 0;
1470         ps_list_reset ();
1471
1472         if ((proc = opendir ("/proc")) == NULL)
1473         {
1474                 char errbuf[1024];
1475                 ERROR ("Cannot open `/proc': %s",
1476                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1477                 return (-1);
1478         }
1479
1480         while ((ent = readdir (proc)) != NULL)
1481         {
1482                 if (!isdigit (ent->d_name[0]))
1483                         continue;
1484
1485                 if ((pid = atoi (ent->d_name)) < 1)
1486                         continue;
1487
1488                 status = ps_read_process (pid, &ps, &state);
1489                 if (status != 0)
1490                 {
1491                         DEBUG ("ps_read_process failed: %i", status);
1492                         continue;
1493                 }
1494
1495                 pse.id       = pid;
1496                 pse.age      = 0;
1497
1498                 pse.num_proc   = ps.num_proc;
1499                 pse.num_lwp    = ps.num_lwp;
1500                 pse.vmem_size  = ps.vmem_size;
1501                 pse.vmem_rss   = ps.vmem_rss;
1502                 pse.vmem_data  = ps.vmem_data;
1503                 pse.vmem_code  = ps.vmem_code;
1504                 pse.stack_size = ps.stack_size;
1505
1506                 pse.vmem_minflt = 0;
1507                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1508                 pse.vmem_majflt = 0;
1509                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1510
1511                 pse.cpu_user = 0;
1512                 pse.cpu_user_counter = ps.cpu_user_counter;
1513                 pse.cpu_system = 0;
1514                 pse.cpu_system_counter = ps.cpu_system_counter;
1515
1516                 pse.io_rchar = ps.io_rchar;
1517                 pse.io_wchar = ps.io_wchar;
1518                 pse.io_syscr = ps.io_syscr;
1519                 pse.io_syscw = ps.io_syscw;
1520
1521                 switch (state)
1522                 {
1523                         case 'R': running++;  break;
1524                         case 'S': sleeping++; break;
1525                         case 'D': blocked++;  break;
1526                         case 'Z': zombies++;  break;
1527                         case 'T': stopped++;  break;
1528                         case 'W': paging++;   break;
1529                 }
1530
1531                 ps_list_add (ps.name,
1532                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1533                                 &pse);
1534         }
1535
1536         closedir (proc);
1537
1538         ps_submit_state ("running",  running);
1539         ps_submit_state ("sleeping", sleeping);
1540         ps_submit_state ("zombies",  zombies);
1541         ps_submit_state ("stopped",  stopped);
1542         ps_submit_state ("paging",   paging);
1543         ps_submit_state ("blocked",  blocked);
1544
1545         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1546                 ps_submit_proc_list (ps_ptr);
1547
1548         fork_rate = read_fork_rate();
1549         if (fork_rate != ULONG_MAX)
1550                 ps_submit_fork_rate(fork_rate);
1551 /* #endif KERNEL_LINUX */
1552
1553 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1554         int running  = 0;
1555         int sleeping = 0;
1556         int zombies  = 0;
1557         int stopped  = 0;
1558         int blocked  = 0;
1559         int idle     = 0;
1560         int wait     = 0;
1561
1562         kvm_t *kd;
1563         char errbuf[1024];
1564         char cmdline[ARG_MAX];
1565         char *cmdline_ptr;
1566         struct kinfo_proc *procs;          /* array of processes */
1567         char **argv;
1568         int count;                         /* returns number of processes */
1569         int i;
1570
1571         procstat_t *ps_ptr;
1572         procstat_entry_t pse;
1573
1574         ps_list_reset ();
1575
1576         /* Open the kvm interface, get a descriptor */
1577         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
1578         if (kd == NULL)
1579         {
1580                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1581                                 errbuf);
1582                 return (0);
1583         }
1584
1585         /* Get the list of processes. */
1586         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1587         if (procs == NULL)
1588         {
1589                 kvm_close (kd);
1590                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1591                                 kvm_geterr(kd));
1592                 return (0);
1593         }
1594
1595         /* Iterate through the processes in kinfo_proc */
1596         for (i = 0; i < count; i++)
1597         {
1598                 /* retrieve the arguments */
1599                 cmdline[0] = 0;
1600                 cmdline_ptr = NULL;
1601
1602                 argv = kvm_getargv (kd, (const struct kinfo_proc *) &(procs[i]), 0);
1603                 if (argv != NULL)
1604                 {
1605                         int status;
1606                         int argc;
1607
1608                         argc = 0;
1609                         while (argv[argc] != NULL)
1610                                 argc++;
1611
1612                         status = strjoin (cmdline, sizeof (cmdline),
1613                                         argv, argc, " ");
1614
1615                         if (status < 0)
1616                         {
1617                                 WARNING ("processes plugin: Command line did "
1618                                                 "not fit into buffer.");
1619                         }
1620                         else
1621                         {
1622                                 cmdline_ptr = &cmdline[0];
1623                         }
1624                 }
1625
1626                 pse.id       = procs[i].ki_pid;
1627                 pse.age      = 0;
1628
1629                 pse.num_proc = 1;
1630                 pse.num_lwp  = procs[i].ki_numthreads;
1631
1632                 pse.vmem_size = procs[i].ki_size;
1633                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1634                 pse.vmem_data = procs[i].ki_dsize * getpagesize();
1635                 pse.vmem_code = procs[i].ki_tsize * getpagesize();
1636                 pse.stack_size = procs[i].ki_ssize * getpagesize();
1637                 pse.vmem_minflt = 0;
1638                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1639                 pse.vmem_majflt = 0;
1640                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1641
1642                 pse.cpu_user = 0;
1643                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec
1644                         * 1000
1645                         + procs[i].ki_rusage.ru_utime.tv_usec;
1646                 pse.cpu_system = 0;
1647                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec
1648                         * 1000
1649                         + procs[i].ki_rusage.ru_stime.tv_usec;
1650
1651                 /* no io data */
1652                 pse.io_rchar = -1;
1653                 pse.io_wchar = -1;
1654                 pse.io_syscr = -1;
1655                 pse.io_syscw = -1;
1656
1657                 switch (procs[i].ki_stat)
1658                 {
1659                         case SSTOP:     stopped++;      break;
1660                         case SSLEEP:    sleeping++;     break;
1661                         case SRUN:      running++;      break;
1662                         case SIDL:      idle++;         break;
1663                         case SWAIT:     wait++;         break;
1664                         case SLOCK:     blocked++;      break;
1665                         case SZOMB:     zombies++;      break;
1666                 }
1667
1668                 ps_list_add (procs[i].ki_comm, cmdline_ptr, &pse);
1669         }
1670
1671         kvm_close(kd);
1672
1673         ps_submit_state ("running",  running);
1674         ps_submit_state ("sleeping", sleeping);
1675         ps_submit_state ("zombies",  zombies);
1676         ps_submit_state ("stopped",  stopped);
1677         ps_submit_state ("blocked",  blocked);
1678         ps_submit_state ("idle",     idle);
1679         ps_submit_state ("wait",     wait);
1680
1681         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1682                 ps_submit_proc_list (ps_ptr);
1683 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
1684
1685 #elif HAVE_PROCINFO_H
1686         /* AIX */
1687         int running  = 0;
1688         int sleeping = 0;
1689         int zombies  = 0;
1690         int stopped  = 0;
1691         int paging   = 0;
1692         int blocked  = 0;
1693
1694         pid_t pindex = 0;
1695         int nprocs;
1696
1697         procstat_t *ps;
1698         procstat_entry_t pse;
1699
1700         ps_list_reset ();
1701         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
1702                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
1703                                         &pindex, MAXPROCENTRY)) > 0)
1704         {
1705                 int i;
1706
1707                 for (i = 0; i < nprocs; i++)
1708                 {
1709                         tid64_t thindex;
1710                         int nthreads;
1711                         char arglist[MAXARGLN+1];
1712                         char *cargs;
1713                         char *cmdline;
1714
1715                         if (procentry[i].pi_state == SNONE) continue;
1716                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
1717
1718                         cmdline = procentry[i].pi_comm;
1719                         cargs = procentry[i].pi_comm;
1720                         if ( procentry[i].pi_flags & SKPROC )
1721                         {
1722                                 if (procentry[i].pi_pid == 0)
1723                                         cmdline = "swapper";
1724                                 cargs = cmdline;
1725                         }
1726                         else
1727                         {
1728                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
1729                                 {
1730                                         int n;
1731
1732                                         n = -1;
1733                                         while (++n < MAXARGLN)
1734                                         {
1735                                                 if (arglist[n] == '\0')
1736                                                 {
1737                                                         if (arglist[n+1] == '\0')
1738                                                                 break;
1739                                                         arglist[n] = ' ';
1740                                                 }
1741                                         }
1742                                         cargs = arglist;
1743                                 }
1744                         }
1745
1746                         pse.id       = procentry[i].pi_pid;
1747                         pse.age      = 0;
1748                         pse.num_lwp  = procentry[i].pi_thcount;
1749                         pse.num_proc = 1;
1750
1751                         thindex=0;
1752                         while ((nthreads = getthrds64(procentry[i].pi_pid,
1753                                                         thrdentry, sizeof(struct thrdentry64),
1754                                                         &thindex, MAXTHRDENTRY)) > 0)
1755                         {
1756                                 int j;
1757
1758                                 for (j=0; j< nthreads; j++)
1759                                 {
1760                                         switch (thrdentry[j].ti_state)
1761                                         {
1762                                                 /* case TSNONE: break; */
1763                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
1764                                                 case TSRUN:     running++;      break;
1765                                                 case TSSLEEP:   sleeping++;     break;
1766                                                 case TSSWAP:    paging++;       break;
1767                                                 case TSSTOP:    stopped++;      break;
1768                                                 case TSZOMB:    zombies++;      break;
1769                                         }
1770                                 }
1771                                 if (nthreads < MAXTHRDENTRY)
1772                                         break;
1773                         }
1774
1775                         pse.cpu_user = 0;
1776                         /* tv_usec is nanosec ??? */
1777                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
1778                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
1779
1780                         pse.cpu_system = 0;
1781                         /* tv_usec is nanosec ??? */
1782                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
1783                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
1784
1785                         pse.vmem_minflt = 0;
1786                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
1787                         pse.vmem_majflt = 0;
1788                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
1789
1790                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
1791                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
1792                         /* Not supported */
1793                         pse.vmem_data = 0;
1794                         pse.vmem_code = 0;
1795                         pse.stack_size =  0;
1796
1797                         ps_list_add (cmdline, cargs, &pse);
1798                 } /* for (i = 0 .. nprocs) */
1799
1800                 if (nprocs < MAXPROCENTRY)
1801                         break;
1802         } /* while (getprocs64() > 0) */
1803         ps_submit_state ("running",  running);
1804         ps_submit_state ("sleeping", sleeping);
1805         ps_submit_state ("zombies",  zombies);
1806         ps_submit_state ("stopped",  stopped);
1807         ps_submit_state ("paging",   paging);
1808         ps_submit_state ("blocked",  blocked);
1809
1810         for (ps = list_head_g; ps != NULL; ps = ps->next)
1811                 ps_submit_proc_list (ps);
1812 #endif /* HAVE_PROCINFO_H */
1813
1814         return (0);
1815 } /* int ps_read */
1816
1817 void module_register (void)
1818 {
1819         plugin_register_config ("processes", ps_config,
1820                         config_keys, config_keys_num);
1821         plugin_register_init ("processes", ps_init);
1822         plugin_register_read ("processes", ps_read);
1823 } /* void module_register */