src/processes.c

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