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, sizeof(buffer), fh) != NULL)
 763         {
 764                 long long tmp;
 765                 char *endptr;
 766
 767                 if (strncmp (buffer, "Vm", 2) != 0)
 768                         continue;
 769
 770                 numfields = strsplit (buffer, fields,
 771                                       STATIC_ARRAY_SIZE (fields));
 772
 773                 if (numfields < 2)
 774                         continue;
 775
 776                 errno = 0;
 777                 endptr = NULL;
 778                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 779                 if ((errno == 0) && (endptr != fields[1]))
 780                 {
 781                         if (strncmp (buffer, "VmData", 6) == 0)
 782                         {
 783                                 data = tmp;
 784                         }
 785                         else if (strncmp (buffer, "VmLib", 5) == 0)
 786                         {
 787                                 lib = tmp;
 788                         }
 789                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 790                         {
 791                                 exe = tmp;
 792                         }
 793                 }
 794         } /* while (fgets) */
 795
 796         if (fclose (fh))
 797         {
 798                 char errbuf[1024];
 799                 WARNING ("processes: fclose: %s",
 800                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 801         }
 802
 803         ps->vmem_data = data * 1024;
 804         ps->vmem_code = (exe + lib) * 1024;
 805
 806         return (ps);
 807 } /* procstat_t *ps_read_vmem */
 808
 809 static procstat_t *ps_read_io (int pid, procstat_t *ps)
 810 {
 811         FILE *fh;
 812         char buffer[1024];
 813         char filename[64];
 814
 815         char *fields[8];
 816         int numfields;
 817
 818         ssnprintf (filename, sizeof (filename), "/proc/%i/io", pid);
 819         if ((fh = fopen (filename, "r")) == NULL)
 820                 return (NULL);
 821
 822         while (fgets (buffer, 1024, fh) != NULL)
 823         {
 824                 derive_t *val = NULL;
 825                 long long tmp;
 826                 char *endptr;
 827
 828                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 829                         val = &(ps->io_rchar);
 830                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 831                         val = &(ps->io_wchar);
 832                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 833                         val = &(ps->io_syscr);
 834                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 835                         val = &(ps->io_syscw);
 836                 else
 837                         continue;
 838
 839                 numfields = strsplit (buffer, fields, 8);
 840
 841                 if (numfields < 2)
 842                         continue;
 843
 844                 errno = 0;
 845                 endptr = NULL;
 846                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 847                 if ((errno != 0) || (endptr == fields[1]))
 848                         *val = -1;
 849                 else
 850                         *val = (derive_t) tmp;
 851         } /* while (fgets) */
 852
 853         if (fclose (fh))
 854         {
 855                 char errbuf[1024];
 856                 WARNING ("processes: fclose: %s",
 857                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 858         }
 859
 860         return (ps);
 861 } /* procstat_t *ps_read_io */
 862
 863 int ps_read_process (int pid, procstat_t *ps, char *state)
 864 {
 865         char  filename[64];
 866         char  buffer[1024];
 867
 868         char *fields[64];
 869         char  fields_len;
 870
 871         int   i;
 872
 873         int   ppid;
 874         int   name_len;
 875
 876         long long unsigned cpu_user_counter;
 877         long long unsigned cpu_system_counter;
 878         long long unsigned vmem_size;
 879         long long unsigned vmem_rss;
 880         long long unsigned stack_size;
 881
 882         memset (ps, 0, sizeof (procstat_t));
 883
 884         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 885
 886         i = read_file_contents (filename, buffer, sizeof(buffer) - 1);
 887         if (i <= 0)
 888                 return (-1);
 889         buffer[i] = 0;
 890
 891         fields_len = strsplit (buffer, fields, 64);
 892         if (fields_len < 24)
 893         {
 894                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 895                                 " `%s' has only %i fields..",
 896                                 (int) pid, filename, fields_len);
 897                 return (-1);
 898         }
 899
 900         /* copy the name, strip brackets in the process */
 901         name_len = strlen (fields[1]) - 2;
 902         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 903         {
 904                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 905                 return (-1);
 906         }
 907         fields[1] = fields[1] + 1;
 908         fields[1][name_len] = '\0';
 909         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 910
 911         ppid = atoi (fields[3]);
 912
 913         *state = fields[2][0];
 914
 915         if (*state == 'Z')
 916         {
 917                 ps->num_lwp  = 0;
 918                 ps->num_proc = 0;
 919         }
 920         else
 921         {
 922                 if ( (ps->num_lwp = ps_read_tasks (pid)) == -1 )
 923                 {
 924                         /* returns -1 => kernel 2.4 */
 925                         ps->num_lwp = 1;
 926                 }
 927                 ps->num_proc = 1;
 928         }
 929
 930         /* Leave the rest at zero if this is only a zombi */
 931         if (ps->num_proc == 0)
 932         {
 933                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 934                                 "name = %s;", pid, ps->name);
 935                 return (0);
 936         }
 937
 938         cpu_user_counter   = atoll (fields[13]);
 939         cpu_system_counter = atoll (fields[14]);
 940         vmem_size          = atoll (fields[22]);
 941         vmem_rss           = atoll (fields[23]);
 942         ps->vmem_minflt_counter = atol (fields[9]);
 943         ps->vmem_majflt_counter = atol (fields[11]);
 944
 945         {
 946                 unsigned long long stack_start = atoll (fields[27]);
 947                 unsigned long long stack_ptr   = atoll (fields[28]);
 948
 949                 stack_size = (stack_start > stack_ptr)
 950                         ? stack_start - stack_ptr
 951                         : stack_ptr - stack_start;
 952         }
 953
 954         /* Convert jiffies to useconds */
 955         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 956         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 957         vmem_rss = vmem_rss * pagesize_g;
 958
 959         if ( (ps_read_vmem(pid, ps)) == NULL)
 960         {
 961                 /* No VMem data */
 962                 ps->vmem_data = -1;
 963                 ps->vmem_code = -1;
 964                 DEBUG("ps_read_process: did not get vmem data for pid %i",pid);
 965         }
 966
 967         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 968         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 969         ps->vmem_size = (unsigned long) vmem_size;
 970         ps->vmem_rss = (unsigned long) vmem_rss;
 971         ps->stack_size = (unsigned long) stack_size;
 972
 973         if ( (ps_read_io (pid, ps)) == NULL)
 974         {
 975                 /* no io data */
 976                 ps->io_rchar = -1;
 977                 ps->io_wchar = -1;
 978                 ps->io_syscr = -1;
 979                 ps->io_syscw = -1;
 980
 981                 DEBUG("ps_read_process: not get io data for pid %i",pid);
 982         }
 983
 984         /* success */
 985         return (0);
 986 } /* int ps_read_process (...) */
 987
 988 static char *ps_get_cmdline (pid_t pid, char *name, char *buf, size_t buf_len)
 989 {
 990         char  *buf_ptr;
 991         size_t len;
 992
 993         char file[PATH_MAX];
 994         int  fd;
 995
 996         size_t n;
 997
 998         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
 999                 return NULL;
1000
1001         ssnprintf (file, sizeof (file), "/proc/%u/cmdline", pid);
1002
1003         fd = open (file, O_RDONLY);
1004         if (fd < 0) {
1005                 char errbuf[4096];
1006                 WARNING ("processes plugin: Failed to open `%s': %s.", file,
1007                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1008                 return NULL;
1009         }
1010
1011         buf_ptr = buf;
1012         len     = buf_len;
1013
1014         n = 0;
1015
1016         while (42) {
1017                 ssize_t status;
1018
1019                 status = read (fd, (void *)buf_ptr, len);
1020
1021                 if (status < 0) {
1022                         char errbuf[4096];
1023
1024                         if ((EAGAIN == errno) || (EINTR == errno))
1025                                 continue;
1026
1027                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1028                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1029                         close (fd);
1030                         return NULL;
1031                 }
1032
1033                 n += status;
1034
1035                 if (status == 0)
1036                         break;
1037
1038                 buf_ptr += status;
1039                 len     -= status;
1040
1041                 if (len <= 0)
1042                         break;
1043         }
1044
1045         close (fd);
1046
1047         if (0 == n) {
1048                 /* cmdline not available; e.g. kernel thread, zombie */
1049                 if (NULL == name)
1050                         return NULL;
1051
1052                 ssnprintf (buf, buf_len, "[%s]", name);
1053                 return buf;
1054         }
1055
1056         assert (n <= buf_len);
1057
1058         if (n == buf_len)
1059                 --n;
1060         buf[n] = '\0';
1061
1062         --n;
1063         /* remove trailing whitespace */
1064         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1065                 buf[n] = '\0';
1066                 --n;
1067         }
1068
1069         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1070         while (n > 0) {
1071                 if ('\0' == buf[n])
1072                         buf[n] = ' ';
1073                 --n;
1074         }
1075         return buf;
1076 } /* char *ps_get_cmdline (...) */
1077
1078 static unsigned long read_fork_rate ()
1079 {
1080         FILE *proc_stat;
1081         char buf[1024];
1082         unsigned long result = 0;
1083         int numfields;
1084         char *fields[3];
1085
1086         proc_stat = fopen("/proc/stat", "r");
1087         if (proc_stat == NULL) {
1088                 char errbuf[1024];
1089                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1090                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1091                 return ULONG_MAX;
1092         }
1093
1094         while (fgets (buf, sizeof(buf), proc_stat) != NULL)
1095         {
1096                 char *endptr;
1097
1098                 numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE (fields));
1099                 if (numfields != 2)
1100                         continue;
1101
1102                 if (strcmp ("processes", fields[0]) != 0)
1103                         continue;
1104
1105                 errno = 0;
1106                 endptr = NULL;
1107                 result = strtoul(fields[1], &endptr, 10);
1108                 if ((endptr == fields[1]) || (errno != 0)) {
1109                         ERROR ("processes plugin: Cannot parse fork rate: %s",
1110                                         fields[1]);
1111                         result = ULONG_MAX;
1112                         break;
1113                 }
1114
1115                 break;
1116         }
1117
1118         fclose(proc_stat);
1119
1120         return result;
1121 }
1122
1123 static void ps_submit_fork_rate (unsigned long value)
1124 {
1125         value_t values[1];
1126         value_list_t vl = VALUE_LIST_INIT;
1127
1128         values[0].derive = (derive_t) value;
1129
1130         vl.values = values;
1131         vl.values_len = 1;
1132         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
1133         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
1134         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
1135         sstrncpy (vl.type, "fork_rate", sizeof (vl.type));
1136         sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
1137
1138         plugin_dispatch_values (&vl);
1139 }
1140
1141 #endif /* KERNEL_LINUX */
1142
1143 #if HAVE_THREAD_INFO
1144 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1145 {
1146         int mib[4];
1147
1148         struct kinfo_proc kp;
1149         size_t            kp_size;
1150
1151         mib[0] = CTL_KERN;
1152         mib[1] = KERN_PROC;
1153         mib[2] = KERN_PROC_PID;
1154
1155         if (pid_for_task (t, pid) != KERN_SUCCESS)
1156                 return (-1);
1157         mib[3] = *pid;
1158
1159         kp_size = sizeof (kp);
1160         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1161                 return (-1);
1162
1163         if (name_max_len > (MAXCOMLEN + 1))
1164                 name_max_len = MAXCOMLEN + 1;
1165
1166         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1167         name[name_max_len - 1] = '\0';
1168
1169         DEBUG ("pid = %i; name = %s;", *pid, name);
1170
1171         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1172          * `top' does it, because it is a lot of work and only used when
1173          * debugging. -octo */
1174
1175         return (0);
1176 }
1177 #endif /* HAVE_THREAD_INFO */
1178 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1179
1180 /* do actual readings from kernel */
1181 static int ps_read (void)
1182 {
1183 #if HAVE_THREAD_INFO
1184         kern_return_t            status;
1185
1186         int                      pset;
1187         processor_set_t          port_pset_priv;
1188
1189         int                      task;
1190         task_array_t             task_list;
1191         mach_msg_type_number_t   task_list_len;
1192
1193         int                      task_pid;
1194         char                     task_name[MAXCOMLEN + 1];
1195
1196         int                      thread;
1197         thread_act_array_t       thread_list;
1198         mach_msg_type_number_t   thread_list_len;
1199         thread_basic_info_data_t thread_data;
1200         mach_msg_type_number_t   thread_data_len;
1201
1202         int running  = 0;
1203         int sleeping = 0;
1204         int zombies  = 0;
1205         int stopped  = 0;
1206         int blocked  = 0;
1207
1208         procstat_t *ps;
1209         procstat_entry_t pse;
1210
1211         ps_list_reset ();
1212
1213         /*
1214          * The Mach-concept is a little different from the traditional UNIX
1215          * concept: All the work is done in threads. Threads are contained in
1216          * `tasks'. Therefore, `task status' doesn't make much sense, since
1217          * it's actually a `thread status'.
1218          * Tasks are assigned to sets of processors, so that's where you go to
1219          * get a list.
1220          */
1221         for (pset = 0; pset < pset_list_len; pset++)
1222         {
1223                 if ((status = host_processor_set_priv (port_host_self,
1224                                                 pset_list[pset],
1225                                                 &port_pset_priv)) != KERN_SUCCESS)
1226                 {
1227                         ERROR ("host_processor_set_priv failed: %s\n",
1228                                         mach_error_string (status));
1229                         continue;
1230                 }
1231
1232                 if ((status = processor_set_tasks (port_pset_priv,
1233                                                 &task_list,
1234                                                 &task_list_len)) != KERN_SUCCESS)
1235                 {
1236                         ERROR ("processor_set_tasks failed: %s\n",
1237                                         mach_error_string (status));
1238                         mach_port_deallocate (port_task_self, port_pset_priv);
1239                         continue;
1240                 }
1241
1242                 for (task = 0; task < task_list_len; task++)
1243                 {
1244                         ps = NULL;
1245                         if (mach_get_task_name (task_list[task],
1246                                                 &task_pid,
1247                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1248                         {
1249                                 /* search for at least one match */
1250                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1251                                         /* FIXME: cmdline should be here instead of NULL */
1252                                         if (ps_list_match (task_name, NULL, ps) == 1)
1253                                                 break;
1254                         }
1255
1256                         /* Collect more detailed statistics for this process */
1257                         if (ps != NULL)
1258                         {
1259                                 task_basic_info_data_t        task_basic_info;
1260                                 mach_msg_type_number_t        task_basic_info_len;
1261                                 task_events_info_data_t       task_events_info;
1262                                 mach_msg_type_number_t        task_events_info_len;
1263                                 task_absolutetime_info_data_t task_absolutetime_info;
1264                                 mach_msg_type_number_t        task_absolutetime_info_len;
1265
1266                                 memset (&pse, '\0', sizeof (pse));
1267                                 pse.id = task_pid;
1268
1269                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1270                                 status = task_info (task_list[task],
1271                                                 TASK_BASIC_INFO,
1272                                                 (task_info_t) &task_basic_info,
1273                                                 &task_basic_info_len);
1274                                 if (status != KERN_SUCCESS)
1275                                 {
1276                                         ERROR ("task_info failed: %s",
1277                                                         mach_error_string (status));
1278                                         continue; /* with next thread_list */
1279                                 }
1280
1281                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1282                                 status = task_info (task_list[task],
1283                                                 TASK_EVENTS_INFO,
1284                                                 (task_info_t) &task_events_info,
1285                                                 &task_events_info_len);
1286                                 if (status != KERN_SUCCESS)
1287                                 {
1288                                         ERROR ("task_info failed: %s",
1289                                                         mach_error_string (status));
1290                                         continue; /* with next thread_list */
1291                                 }
1292
1293                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1294                                 status = task_info (task_list[task],
1295                                                 TASK_ABSOLUTETIME_INFO,
1296                                                 (task_info_t) &task_absolutetime_info,
1297                                                 &task_absolutetime_info_len);
1298                                 if (status != KERN_SUCCESS)
1299                                 {
1300                                         ERROR ("task_info failed: %s",
1301                                                         mach_error_string (status));
1302                                         continue; /* with next thread_list */
1303                                 }
1304
1305                                 pse.num_proc++;
1306                                 pse.vmem_size = task_basic_info.virtual_size;
1307                                 pse.vmem_rss = task_basic_info.resident_size;
1308                                 /* Does not seem to be easily exposed */
1309                                 pse.vmem_data = 0;
1310                                 pse.vmem_code = 0;
1311
1312                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1313                                 pse.vmem_majflt_counter = task_events_info.faults;
1314
1315                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1316                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1317                         }
1318
1319                         status = task_threads (task_list[task], &thread_list,
1320                                         &thread_list_len);
1321                         if (status != KERN_SUCCESS)
1322                         {
1323                                 /* Apple's `top' treats this case a zombie. It
1324                                  * makes sense to some extend: A `zombie'
1325                                  * thread is nonsense, since the task/process
1326                                  * is dead. */
1327                                 zombies++;
1328                                 DEBUG ("task_threads failed: %s",
1329                                                 mach_error_string (status));
1330                                 if (task_list[task] != port_task_self)
1331                                         mach_port_deallocate (port_task_self,
1332                                                         task_list[task]);
1333                                 continue; /* with next task_list */
1334                         }
1335
1336                         for (thread = 0; thread < thread_list_len; thread++)
1337                         {
1338                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1339                                 status = thread_info (thread_list[thread],
1340                                                 THREAD_BASIC_INFO,
1341                                                 (thread_info_t) &thread_data,
1342                                                 &thread_data_len);
1343                                 if (status != KERN_SUCCESS)
1344                                 {
1345                                         ERROR ("thread_info failed: %s",
1346                                                         mach_error_string (status));
1347                                         if (task_list[task] != port_task_self)
1348                                                 mach_port_deallocate (port_task_self,
1349                                                                 thread_list[thread]);
1350                                         continue; /* with next thread_list */
1351                                 }
1352
1353                                 if (ps != NULL)
1354                                         pse.num_lwp++;
1355
1356                                 switch (thread_data.run_state)
1357                                 {
1358                                         case TH_STATE_RUNNING:
1359                                                 running++;
1360                                                 break;
1361                                         case TH_STATE_STOPPED:
1362                                         /* What exactly is `halted'? */
1363                                         case TH_STATE_HALTED:
1364                                                 stopped++;
1365                                                 break;
1366                                         case TH_STATE_WAITING:
1367                                                 sleeping++;
1368                                                 break;
1369                                         case TH_STATE_UNINTERRUPTIBLE:
1370                                                 blocked++;
1371                                                 break;
1372                                         /* There is no `zombie' case here,
1373                                          * since there are no zombie-threads.
1374                                          * There's only zombie tasks, which are
1375                                          * handled above. */
1376                                         default:
1377                                                 WARNING ("Unknown thread status: %i",
1378                                                                 thread_data.run_state);
1379                                                 break;
1380                                 } /* switch (thread_data.run_state) */
1381
1382                                 if (task_list[task] != port_task_self)
1383                                 {
1384                                         status = mach_port_deallocate (port_task_self,
1385                                                         thread_list[thread]);
1386                                         if (status != KERN_SUCCESS)
1387                                                 ERROR ("mach_port_deallocate failed: %s",
1388                                                                 mach_error_string (status));
1389                                 }
1390                         } /* for (thread_list) */
1391
1392                         if ((status = vm_deallocate (port_task_self,
1393                                                         (vm_address_t) thread_list,
1394                                                         thread_list_len * sizeof (thread_act_t)))
1395                                         != KERN_SUCCESS)
1396                         {
1397                                 ERROR ("vm_deallocate failed: %s",
1398                                                 mach_error_string (status));
1399                         }
1400                         thread_list = NULL;
1401                         thread_list_len = 0;
1402
1403                         /* Only deallocate the task port, if it isn't our own.
1404                          * Don't know what would happen in that case, but this
1405                          * is what Apple's top does.. ;) */
1406                         if (task_list[task] != port_task_self)
1407                         {
1408                                 status = mach_port_deallocate (port_task_self,
1409                                                 task_list[task]);
1410                                 if (status != KERN_SUCCESS)
1411                                         ERROR ("mach_port_deallocate failed: %s",
1412                                                         mach_error_string (status));
1413                         }
1414
1415                         if (ps != NULL)
1416                                 /* FIXME: cmdline should be here instead of NULL */
1417                                 ps_list_add (task_name, NULL, &pse);
1418                 } /* for (task_list) */
1419
1420                 if ((status = vm_deallocate (port_task_self,
1421                                 (vm_address_t) task_list,
1422                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1423                 {
1424                         ERROR ("vm_deallocate failed: %s",
1425                                         mach_error_string (status));
1426                 }
1427                 task_list = NULL;
1428                 task_list_len = 0;
1429
1430                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1431                                 != KERN_SUCCESS)
1432                 {
1433                         ERROR ("mach_port_deallocate failed: %s",
1434                                         mach_error_string (status));
1435                 }
1436         } /* for (pset_list) */
1437
1438         ps_submit_state ("running", running);
1439         ps_submit_state ("sleeping", sleeping);
1440         ps_submit_state ("zombies", zombies);
1441         ps_submit_state ("stopped", stopped);
1442         ps_submit_state ("blocked", blocked);
1443
1444         for (ps = list_head_g; ps != NULL; ps = ps->next)
1445                 ps_submit_proc_list (ps);
1446 /* #endif HAVE_THREAD_INFO */
1447
1448 #elif KERNEL_LINUX
1449         int running  = 0;
1450         int sleeping = 0;
1451         int zombies  = 0;
1452         int stopped  = 0;
1453         int paging   = 0;
1454         int blocked  = 0;
1455
1456         struct dirent *ent;
1457         DIR           *proc;
1458         int            pid;
1459
1460         char cmdline[ARG_MAX];
1461
1462         int        status;
1463         procstat_t ps;
1464         procstat_entry_t pse;
1465         char       state;
1466
1467         unsigned long fork_rate;
1468
1469         procstat_t *ps_ptr;
1470
1471         running = sleeping = zombies = stopped = paging = blocked = 0;
1472         ps_list_reset ();
1473
1474         if ((proc = opendir ("/proc")) == NULL)
1475         {
1476                 char errbuf[1024];
1477                 ERROR ("Cannot open `/proc': %s",
1478                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1479                 return (-1);
1480         }
1481
1482         while ((ent = readdir (proc)) != NULL)
1483         {
1484                 if (!isdigit (ent->d_name[0]))
1485                         continue;
1486
1487                 if ((pid = atoi (ent->d_name)) < 1)
1488                         continue;
1489
1490                 status = ps_read_process (pid, &ps, &state);
1491                 if (status != 0)
1492                 {
1493                         DEBUG ("ps_read_process failed: %i", status);
1494                         continue;
1495                 }
1496
1497                 pse.id       = pid;
1498                 pse.age      = 0;
1499
1500                 pse.num_proc   = ps.num_proc;
1501                 pse.num_lwp    = ps.num_lwp;
1502                 pse.vmem_size  = ps.vmem_size;
1503                 pse.vmem_rss   = ps.vmem_rss;
1504                 pse.vmem_data  = ps.vmem_data;
1505                 pse.vmem_code  = ps.vmem_code;
1506                 pse.stack_size = ps.stack_size;
1507
1508                 pse.vmem_minflt = 0;
1509                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1510                 pse.vmem_majflt = 0;
1511                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1512
1513                 pse.cpu_user = 0;
1514                 pse.cpu_user_counter = ps.cpu_user_counter;
1515                 pse.cpu_system = 0;
1516                 pse.cpu_system_counter = ps.cpu_system_counter;
1517
1518                 pse.io_rchar = ps.io_rchar;
1519                 pse.io_wchar = ps.io_wchar;
1520                 pse.io_syscr = ps.io_syscr;
1521                 pse.io_syscw = ps.io_syscw;
1522
1523                 switch (state)
1524                 {
1525                         case 'R': running++;  break;
1526                         case 'S': sleeping++; break;
1527                         case 'D': blocked++;  break;
1528                         case 'Z': zombies++;  break;
1529                         case 'T': stopped++;  break;
1530                         case 'W': paging++;   break;
1531                 }
1532
1533                 ps_list_add (ps.name,
1534                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1535                                 &pse);
1536         }
1537
1538         closedir (proc);
1539
1540         ps_submit_state ("running",  running);
1541         ps_submit_state ("sleeping", sleeping);
1542         ps_submit_state ("zombies",  zombies);
1543         ps_submit_state ("stopped",  stopped);
1544         ps_submit_state ("paging",   paging);
1545         ps_submit_state ("blocked",  blocked);
1546
1547         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1548                 ps_submit_proc_list (ps_ptr);
1549
1550         fork_rate = read_fork_rate();
1551         if (fork_rate != ULONG_MAX)
1552                 ps_submit_fork_rate(fork_rate);
1553 /* #endif KERNEL_LINUX */
1554
1555 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1556         int running  = 0;
1557         int sleeping = 0;
1558         int zombies  = 0;
1559         int stopped  = 0;
1560         int blocked  = 0;
1561         int idle     = 0;
1562         int wait     = 0;
1563
1564         kvm_t *kd;
1565         char errbuf[1024];
1566         char cmdline[ARG_MAX];
1567         char *cmdline_ptr;
1568         struct kinfo_proc *procs;          /* array of processes */
1569         char **argv;
1570         int count;                         /* returns number of processes */
1571         int i;
1572
1573         procstat_t *ps_ptr;
1574         procstat_entry_t pse;
1575
1576         ps_list_reset ();
1577
1578         /* Open the kvm interface, get a descriptor */
1579         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
1580         if (kd == NULL)
1581         {
1582                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1583                                 errbuf);
1584                 return (0);
1585         }
1586
1587         /* Get the list of processes. */
1588         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1589         if (procs == NULL)
1590         {
1591                 kvm_close (kd);
1592                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1593                                 kvm_geterr(kd));
1594                 return (0);
1595         }
1596
1597         /* Iterate through the processes in kinfo_proc */
1598         for (i = 0; i < count; i++)
1599         {
1600                 /* retrieve the arguments */
1601                 cmdline[0] = 0;
1602                 cmdline_ptr = NULL;
1603
1604                 argv = kvm_getargv (kd, (const struct kinfo_proc *) &(procs[i]), 0);
1605                 if (argv != NULL)
1606                 {
1607                         int status;
1608                         int argc;
1609
1610                         argc = 0;
1611                         while (argv[argc] != NULL)
1612                                 argc++;
1613
1614                         status = strjoin (cmdline, sizeof (cmdline),
1615                                         argv, argc, " ");
1616
1617                         if (status < 0)
1618                         {
1619                                 WARNING ("processes plugin: Command line did "
1620                                                 "not fit into buffer.");
1621                         }
1622                         else
1623                         {
1624                                 cmdline_ptr = &cmdline[0];
1625                         }
1626                 }
1627
1628                 pse.id       = procs[i].ki_pid;
1629                 pse.age      = 0;
1630
1631                 pse.num_proc = 1;
1632                 pse.num_lwp  = procs[i].ki_numthreads;
1633
1634                 pse.vmem_size = procs[i].ki_size;
1635                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1636                 pse.vmem_data = procs[i].ki_dsize * getpagesize();
1637                 pse.vmem_code = procs[i].ki_tsize * getpagesize();
1638                 pse.stack_size = procs[i].ki_ssize * getpagesize();
1639                 pse.vmem_minflt = 0;
1640                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1641                 pse.vmem_majflt = 0;
1642                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1643
1644                 pse.cpu_user = 0;
1645                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec
1646                         * 1000
1647                         + procs[i].ki_rusage.ru_utime.tv_usec;
1648                 pse.cpu_system = 0;
1649                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec
1650                         * 1000
1651                         + procs[i].ki_rusage.ru_stime.tv_usec;
1652
1653                 /* no io data */
1654                 pse.io_rchar = -1;
1655                 pse.io_wchar = -1;
1656                 pse.io_syscr = -1;
1657                 pse.io_syscw = -1;
1658
1659                 switch (procs[i].ki_stat)
1660                 {
1661                         case SSTOP:     stopped++;      break;
1662                         case SSLEEP:    sleeping++;     break;
1663                         case SRUN:      running++;      break;
1664                         case SIDL:      idle++;         break;
1665                         case SWAIT:     wait++;         break;
1666                         case SLOCK:     blocked++;      break;
1667                         case SZOMB:     zombies++;      break;
1668                 }
1669
1670                 ps_list_add (procs[i].ki_comm, cmdline_ptr, &pse);
1671         }
1672
1673         kvm_close(kd);
1674
1675         ps_submit_state ("running",  running);
1676         ps_submit_state ("sleeping", sleeping);
1677         ps_submit_state ("zombies",  zombies);
1678         ps_submit_state ("stopped",  stopped);
1679         ps_submit_state ("blocked",  blocked);
1680         ps_submit_state ("idle",     idle);
1681         ps_submit_state ("wait",     wait);
1682
1683         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1684                 ps_submit_proc_list (ps_ptr);
1685 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
1686
1687 #elif HAVE_PROCINFO_H
1688         /* AIX */
1689         int running  = 0;
1690         int sleeping = 0;
1691         int zombies  = 0;
1692         int stopped  = 0;
1693         int paging   = 0;
1694         int blocked  = 0;
1695
1696         pid_t pindex = 0;
1697         int nprocs;
1698
1699         procstat_t *ps;
1700         procstat_entry_t pse;
1701
1702         ps_list_reset ();
1703         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
1704                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
1705                                         &pindex, MAXPROCENTRY)) > 0)
1706         {
1707                 int i;
1708
1709                 for (i = 0; i < nprocs; i++)
1710                 {
1711                         tid64_t thindex;
1712                         int nthreads;
1713                         char arglist[MAXARGLN+1];
1714                         char *cargs;
1715                         char *cmdline;
1716
1717                         if (procentry[i].pi_state == SNONE) continue;
1718                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
1719
1720                         cmdline = procentry[i].pi_comm;
1721                         cargs = procentry[i].pi_comm;
1722                         if ( procentry[i].pi_flags & SKPROC )
1723                         {
1724                                 if (procentry[i].pi_pid == 0)
1725                                         cmdline = "swapper";
1726                                 cargs = cmdline;
1727                         }
1728                         else
1729                         {
1730                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
1731                                 {
1732                                         int n;
1733
1734                                         n = -1;
1735                                         while (++n < MAXARGLN)
1736                                         {
1737                                                 if (arglist[n] == '\0')
1738                                                 {
1739                                                         if (arglist[n+1] == '\0')
1740                                                                 break;
1741                                                         arglist[n] = ' ';
1742                                                 }
1743                                         }
1744                                         cargs = arglist;
1745                                 }
1746                         }
1747
1748                         pse.id       = procentry[i].pi_pid;
1749                         pse.age      = 0;
1750                         pse.num_lwp  = procentry[i].pi_thcount;
1751                         pse.num_proc = 1;
1752
1753                         thindex=0;
1754                         while ((nthreads = getthrds64(procentry[i].pi_pid,
1755                                                         thrdentry, sizeof(struct thrdentry64),
1756                                                         &thindex, MAXTHRDENTRY)) > 0)
1757                         {
1758                                 int j;
1759
1760                                 for (j=0; j< nthreads; j++)
1761                                 {
1762                                         switch (thrdentry[j].ti_state)
1763                                         {
1764                                                 /* case TSNONE: break; */
1765                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
1766                                                 case TSRUN:     running++;      break;
1767                                                 case TSSLEEP:   sleeping++;     break;
1768                                                 case TSSWAP:    paging++;       break;
1769                                                 case TSSTOP:    stopped++;      break;
1770                                                 case TSZOMB:    zombies++;      break;
1771                                         }
1772                                 }
1773                                 if (nthreads < MAXTHRDENTRY)
1774                                         break;
1775                         }
1776
1777                         pse.cpu_user = 0;
1778                         /* tv_usec is nanosec ??? */
1779                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
1780                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
1781
1782                         pse.cpu_system = 0;
1783                         /* tv_usec is nanosec ??? */
1784                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
1785                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
1786
1787                         pse.vmem_minflt = 0;
1788                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
1789                         pse.vmem_majflt = 0;
1790                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
1791
1792                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
1793                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
1794                         /* Not supported */
1795                         pse.vmem_data = 0;
1796                         pse.vmem_code = 0;
1797                         pse.stack_size =  0;
1798
1799                         ps_list_add (cmdline, cargs, &pse);
1800                 } /* for (i = 0 .. nprocs) */
1801
1802                 if (nprocs < MAXPROCENTRY)
1803                         break;
1804         } /* while (getprocs64() > 0) */
1805         ps_submit_state ("running",  running);
1806         ps_submit_state ("sleeping", sleeping);
1807         ps_submit_state ("zombies",  zombies);
1808         ps_submit_state ("stopped",  stopped);
1809         ps_submit_state ("paging",   paging);
1810         ps_submit_state ("blocked",  blocked);
1811
1812         for (ps = list_head_g; ps != NULL; ps = ps->next)
1813                 ps_submit_proc_list (ps);
1814 #endif /* HAVE_PROCINFO_H */
1815
1816         return (0);
1817 } /* int ps_read */
1818
1819 void module_register (void)
1820 {
1821         plugin_register_config ("processes", ps_config,
1822                         config_keys, config_keys_num);
1823         plugin_register_init ("processes", ps_init);
1824         plugin_register_read ("processes", ps_read);
1825 } /* void module_register */