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_list_t vl = VALUE_LIST_INIT;
 664
 665         vl.values = &(value_t) { .gauge = value };
 666         vl.values_len = 1;
 667         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 668         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 669         sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
 670         sstrncpy (vl.type, "ps_state", sizeof (vl.type));
 671         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 672
 673         plugin_dispatch_values (&vl);
 674 }
 675
 676 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 677 static void ps_submit_proc_list (procstat_t *ps)
 678 {
 679         value_list_t vl = VALUE_LIST_INIT;
 680         value_t values[2];
 681
 682         vl.values = values;
 683         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 684         sstrncpy (vl.plugin, "processes", sizeof (vl.plugin));
 685         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 686
 687         sstrncpy (vl.type, "ps_vm", sizeof (vl.type));
 688         vl.values[0].gauge = ps->vmem_size;
 689         vl.values_len = 1;
 690         plugin_dispatch_values (&vl);
 691
 692         sstrncpy (vl.type, "ps_rss", sizeof (vl.type));
 693         vl.values[0].gauge = ps->vmem_rss;
 694         vl.values_len = 1;
 695         plugin_dispatch_values (&vl);
 696
 697         sstrncpy (vl.type, "ps_data", sizeof (vl.type));
 698         vl.values[0].gauge = ps->vmem_data;
 699         vl.values_len = 1;
 700         plugin_dispatch_values (&vl);
 701
 702         sstrncpy (vl.type, "ps_code", sizeof (vl.type));
 703         vl.values[0].gauge = ps->vmem_code;
 704         vl.values_len = 1;
 705         plugin_dispatch_values (&vl);
 706
 707         sstrncpy (vl.type, "ps_stacksize", sizeof (vl.type));
 708         vl.values[0].gauge = ps->stack_size;
 709         vl.values_len = 1;
 710         plugin_dispatch_values (&vl);
 711
 712         sstrncpy (vl.type, "ps_cputime", sizeof (vl.type));
 713         vl.values[0].derive = ps->cpu_user_counter;
 714         vl.values[1].derive = ps->cpu_system_counter;
 715         vl.values_len = 2;
 716         plugin_dispatch_values (&vl);
 717
 718         sstrncpy (vl.type, "ps_count", sizeof (vl.type));
 719         vl.values[0].gauge = ps->num_proc;
 720         vl.values[1].gauge = ps->num_lwp;
 721         vl.values_len = 2;
 722         plugin_dispatch_values (&vl);
 723
 724         sstrncpy (vl.type, "ps_pagefaults", sizeof (vl.type));
 725         vl.values[0].derive = ps->vmem_minflt_counter;
 726         vl.values[1].derive = ps->vmem_majflt_counter;
 727         vl.values_len = 2;
 728         plugin_dispatch_values (&vl);
 729
 730         if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
 731         {
 732                 sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
 733                 vl.values[0].derive = ps->io_rchar;
 734                 vl.values[1].derive = ps->io_wchar;
 735                 vl.values_len = 2;
 736                 plugin_dispatch_values (&vl);
 737         }
 738
 739         if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
 740         {
 741                 sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
 742                 vl.values[0].derive = ps->io_syscr;
 743                 vl.values[1].derive = ps->io_syscw;
 744                 vl.values_len = 2;
 745                 plugin_dispatch_values (&vl);
 746         }
 747
 748         if ( report_ctx_switch )
 749         {
 750                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 751                 sstrncpy (vl.type_instance, "voluntary", sizeof (vl.type_instance));
 752                 vl.values[0].derive = ps->cswitch_vol;
 753                 vl.values_len = 1;
 754                 plugin_dispatch_values (&vl);
 755
 756                 sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
 757                 sstrncpy (vl.type_instance, "involuntary", sizeof (vl.type_instance));
 758                 vl.values[0].derive = ps->cswitch_invol;
 759                 vl.values_len = 1;
 760                 plugin_dispatch_values (&vl);
 761         }
 762
 763         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; "
 764                         "vmem_size = %lu; vmem_rss = %lu; vmem_data = %lu; "
 765                         "vmem_code = %lu; "
 766                         "vmem_minflt_counter = %"PRIi64"; vmem_majflt_counter = %"PRIi64"; "
 767                         "cpu_user_counter = %"PRIi64"; cpu_system_counter = %"PRIi64"; "
 768                         "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
 769                         "io_syscr = %"PRIi64"; io_syscw = %"PRIi64"; "
 770                         "cswitch_vol = %"PRIi64"; cswitch_invol = %"PRIi64";",
 771                         ps->name, ps->num_proc, ps->num_lwp,
 772                         ps->vmem_size, ps->vmem_rss,
 773                         ps->vmem_data, ps->vmem_code,
 774                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 775                         ps->cpu_user_counter, ps->cpu_system_counter,
 776                         ps->io_rchar, ps->io_wchar, ps->io_syscr, ps->io_syscw,
 777                         ps->cswitch_vol, ps->cswitch_invol);
 778 } /* void ps_submit_proc_list */
 779
 780 #if KERNEL_LINUX || KERNEL_SOLARIS
 781 static void ps_submit_fork_rate (derive_t value)
 782 {
 783         value_list_t vl = VALUE_LIST_INIT;
 784
 785         vl.values = &(value_t) { .derive = value };
 786         vl.values_len = 1;
 787         sstrncpy(vl.host, hostname_g, sizeof (vl.host));
 788         sstrncpy(vl.plugin, "processes", sizeof (vl.plugin));
 789         sstrncpy(vl.plugin_instance, "", sizeof (vl.plugin_instance));
 790         sstrncpy(vl.type, "fork_rate", sizeof (vl.type));
 791         sstrncpy(vl.type_instance, "", sizeof (vl.type_instance));
 792
 793         plugin_dispatch_values(&vl);
 794 }
 795 #endif /* KERNEL_LINUX || KERNEL_SOLARIS*/
 796
 797 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 798 #if KERNEL_LINUX
 799 static procstat_t *ps_read_tasks_status (long pid, procstat_t *ps)
 800 {
 801         char           dirname[64];
 802         DIR           *dh;
 803         char           filename[64];
 804         FILE          *fh;
 805         struct dirent *ent;
 806         derive_t cswitch_vol = 0;
 807         derive_t cswitch_invol = 0;
 808         char buffer[1024];
 809         char *fields[8];
 810         int numfields;
 811
 812         ssnprintf (dirname, sizeof (dirname), "/proc/%li/task", pid);
 813
 814         if ((dh = opendir (dirname)) == NULL)
 815         {
 816                 DEBUG ("Failed to open directory `%s'", dirname);
 817                 return (NULL);
 818         }
 819
 820         while ((ent = readdir (dh)) != NULL)
 821         {
 822                 char *tpid;
 823
 824                 if (!isdigit ((int) ent->d_name[0]))
 825                         continue;
 826
 827                 tpid = ent->d_name;
 828
 829                 ssnprintf (filename, sizeof (filename), "/proc/%li/task/%s/status", pid, tpid);
 830                 if ((fh = fopen (filename, "r")) == NULL)
 831                 {
 832                         DEBUG ("Failed to open file `%s'", filename);
 833                         continue;
 834                 }
 835
 836                 while (fgets (buffer, sizeof(buffer), fh) != NULL)
 837                 {
 838                         derive_t tmp;
 839                         char *endptr;
 840
 841                         if (strncmp (buffer, "voluntary_ctxt_switches", 23) != 0
 842                                 && strncmp (buffer, "nonvoluntary_ctxt_switches", 26) != 0)
 843                                 continue;
 844
 845                         numfields = strsplit (buffer, fields,
 846                                 STATIC_ARRAY_SIZE (fields));
 847
 848                         if (numfields < 2)
 849                                 continue;
 850
 851                         errno = 0;
 852                         endptr = NULL;
 853                         tmp = (derive_t) strtoll (fields[1], &endptr, /* base = */ 10);
 854                         if ((errno == 0) && (endptr != fields[1]))
 855                         {
 856                                 if (strncmp (buffer, "voluntary_ctxt_switches", 23) == 0)
 857                                 {
 858                                         cswitch_vol += tmp;
 859                                 }
 860                                 else if (strncmp (buffer, "nonvoluntary_ctxt_switches", 26) == 0)
 861                                 {
 862                                         cswitch_invol += tmp;
 863                                 }
 864                         }
 865                 } /* while (fgets) */
 866
 867                 if (fclose (fh))
 868                 {
 869                         char errbuf[1024];
 870                         WARNING ("processes: fclose: %s",
 871                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 872                 }
 873         }
 874         closedir (dh);
 875
 876         ps->cswitch_vol = cswitch_vol;
 877         ps->cswitch_invol = cswitch_invol;
 878
 879         return (ps);
 880 } /* int *ps_read_tasks_status */
 881
 882 /* Read data from /proc/pid/status */
 883 static procstat_t *ps_read_status (long pid, procstat_t *ps)
 884 {
 885         FILE *fh;
 886         char buffer[1024];
 887         char filename[64];
 888         unsigned long lib = 0;
 889         unsigned long exe = 0;
 890         unsigned long data = 0;
 891         unsigned long threads = 0;
 892         char *fields[8];
 893         int numfields;
 894
 895         ssnprintf (filename, sizeof (filename), "/proc/%li/status", pid);
 896         if ((fh = fopen (filename, "r")) == NULL)
 897                 return (NULL);
 898
 899         while (fgets (buffer, sizeof(buffer), fh) != NULL)
 900         {
 901                 unsigned long tmp;
 902                 char *endptr;
 903
 904                 if (strncmp (buffer, "Vm", 2) != 0
 905                                 && strncmp (buffer, "Threads", 7) != 0)
 906                         continue;
 907
 908                 numfields = strsplit (buffer, fields,
 909                                 STATIC_ARRAY_SIZE (fields));
 910
 911                 if (numfields < 2)
 912                         continue;
 913
 914                 errno = 0;
 915                 endptr = NULL;
 916                 tmp = strtoul (fields[1], &endptr, /* base = */ 10);
 917                 if ((errno == 0) && (endptr != fields[1]))
 918                 {
 919                         if (strncmp (buffer, "VmData", 6) == 0)
 920                         {
 921                                 data = tmp;
 922                         }
 923                         else if (strncmp (buffer, "VmLib", 5) == 0)
 924                         {
 925                                 lib = tmp;
 926                         }
 927                         else if  (strncmp(buffer, "VmExe", 5) == 0)
 928                         {
 929                                 exe = tmp;
 930                         }
 931                         else if  (strncmp(buffer, "Threads", 7) == 0)
 932                         {
 933                                 threads = tmp;
 934                         }
 935                 }
 936         } /* while (fgets) */
 937
 938         if (fclose (fh))
 939         {
 940                 char errbuf[1024];
 941                 WARNING ("processes: fclose: %s",
 942                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 943         }
 944
 945         ps->vmem_data = data * 1024;
 946         ps->vmem_code = (exe + lib) * 1024;
 947         if (threads != 0)
 948                 ps->num_lwp = threads;
 949
 950         return (ps);
 951 } /* procstat_t *ps_read_vmem */
 952
 953 static procstat_t *ps_read_io (long pid, procstat_t *ps)
 954 {
 955         FILE *fh;
 956         char buffer[1024];
 957         char filename[64];
 958
 959         char *fields[8];
 960         int numfields;
 961
 962         ssnprintf (filename, sizeof (filename), "/proc/%li/io", pid);
 963         if ((fh = fopen (filename, "r")) == NULL)
 964                 return (NULL);
 965
 966         while (fgets (buffer, sizeof (buffer), fh) != NULL)
 967         {
 968                 derive_t *val = NULL;
 969                 long long tmp;
 970                 char *endptr;
 971
 972                 if (strncasecmp (buffer, "rchar:", 6) == 0)
 973                         val = &(ps->io_rchar);
 974                 else if (strncasecmp (buffer, "wchar:", 6) == 0)
 975                         val = &(ps->io_wchar);
 976                 else if (strncasecmp (buffer, "syscr:", 6) == 0)
 977                         val = &(ps->io_syscr);
 978                 else if (strncasecmp (buffer, "syscw:", 6) == 0)
 979                         val = &(ps->io_syscw);
 980                 else
 981                         continue;
 982
 983                 numfields = strsplit (buffer, fields,
 984                                 STATIC_ARRAY_SIZE (fields));
 985
 986                 if (numfields < 2)
 987                         continue;
 988
 989                 errno = 0;
 990                 endptr = NULL;
 991                 tmp = strtoll (fields[1], &endptr, /* base = */ 10);
 992                 if ((errno != 0) || (endptr == fields[1]))
 993                         *val = -1;
 994                 else
 995                         *val = (derive_t) tmp;
 996         } /* while (fgets) */
 997
 998         if (fclose (fh))
 999         {
1000                 char errbuf[1024];
1001                 WARNING ("processes: fclose: %s",
1002                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1003         }
1004
1005         return (ps);
1006 } /* procstat_t *ps_read_io */
1007
1008 static int ps_read_process (long pid, procstat_t *ps, char *state)
1009 {
1010         char  filename[64];
1011         char  buffer[1024];
1012
1013         char *fields[64];
1014         char  fields_len;
1015
1016         size_t buffer_len;
1017
1018         char  *buffer_ptr;
1019         size_t name_start_pos;
1020         size_t name_end_pos;
1021         size_t name_len;
1022
1023         derive_t cpu_user_counter;
1024         derive_t cpu_system_counter;
1025         long long unsigned vmem_size;
1026         long long unsigned vmem_rss;
1027         long long unsigned stack_size;
1028
1029         ssize_t status;
1030
1031         memset (ps, 0, sizeof (procstat_t));
1032
1033         ssnprintf (filename, sizeof (filename), "/proc/%li/stat", pid);
1034
1035         status = read_file_contents (filename, buffer, sizeof(buffer) - 1);
1036         if (status <= 0)
1037                 return (-1);
1038         buffer_len = (size_t) status;
1039         buffer[buffer_len] = 0;
1040
1041         /* The name of the process is enclosed in parens. Since the name can
1042          * contain parens itself, spaces, numbers and pretty much everything
1043          * else, use these to determine the process name. We don't use
1044          * strchr(3) and strrchr(3) to avoid pointer arithmetic which would
1045          * otherwise be required to determine name_len. */
1046         name_start_pos = 0;
1047         while (name_start_pos < buffer_len && buffer[name_start_pos] != '(')
1048                 name_start_pos++;
1049
1050         name_end_pos = buffer_len;
1051         while (name_end_pos > 0 && buffer[name_end_pos] != ')')
1052                 name_end_pos--;
1053
1054         /* Either '(' or ')' is not found or they are in the wrong order.
1055          * Anyway, something weird that shouldn't happen ever. */
1056         if (name_start_pos >= name_end_pos)
1057         {
1058                 ERROR ("processes plugin: name_start_pos = %zu >= name_end_pos = %zu",
1059                                 name_start_pos, name_end_pos);
1060                 return (-1);
1061         }
1062
1063         name_len = (name_end_pos - name_start_pos) - 1;
1064         if (name_len >= sizeof (ps->name))
1065                 name_len = sizeof (ps->name) - 1;
1066
1067         sstrncpy (ps->name, &buffer[name_start_pos + 1], name_len + 1);
1068
1069         if ((buffer_len - name_end_pos) < 2)
1070                 return (-1);
1071         buffer_ptr = &buffer[name_end_pos + 2];
1072
1073         fields_len = strsplit (buffer_ptr, fields, STATIC_ARRAY_SIZE (fields));
1074         if (fields_len < 22)
1075         {
1076                 DEBUG ("processes plugin: ps_read_process (pid = %li):"
1077                                 " `%s' has only %i fields..",
1078                                 pid, filename, fields_len);
1079                 return (-1);
1080         }
1081
1082         *state = fields[0][0];
1083
1084         if (*state == 'Z')
1085         {
1086                 ps->num_lwp  = 0;
1087                 ps->num_proc = 0;
1088         }
1089         else
1090         {
1091                 ps->num_lwp = strtoul (fields[17], /* endptr = */ NULL, /* base = */ 10);
1092                 if ((ps_read_status(pid, ps)) == NULL)
1093                 {
1094                         /* No VMem data */
1095                         ps->vmem_data = -1;
1096                         ps->vmem_code = -1;
1097                         DEBUG("ps_read_process: did not get vmem data for pid %li", pid);
1098                 }
1099                 if (ps->num_lwp == 0)
1100                         ps->num_lwp = 1;
1101                 ps->num_proc = 1;
1102         }
1103
1104         /* Leave the rest at zero if this is only a zombi */
1105         if (ps->num_proc == 0)
1106         {
1107                 DEBUG ("processes plugin: This is only a zombie: pid = %li; "
1108                                 "name = %s;", pid, ps->name);
1109                 return (0);
1110         }
1111
1112         cpu_user_counter   = atoll (fields[11]);
1113         cpu_system_counter = atoll (fields[12]);
1114         vmem_size          = atoll (fields[20]);
1115         vmem_rss           = atoll (fields[21]);
1116         ps->vmem_minflt_counter = atol (fields[7]);
1117         ps->vmem_majflt_counter = atol (fields[9]);
1118
1119         {
1120                 unsigned long long stack_start = atoll (fields[25]);
1121                 unsigned long long stack_ptr   = atoll (fields[26]);
1122
1123                 stack_size = (stack_start > stack_ptr)
1124                         ? stack_start - stack_ptr
1125                         : stack_ptr - stack_start;
1126         }
1127
1128         /* Convert jiffies to useconds */
1129         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
1130         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
1131         vmem_rss = vmem_rss * pagesize_g;
1132
1133         ps->cpu_user_counter = cpu_user_counter;
1134         ps->cpu_system_counter = cpu_system_counter;
1135         ps->vmem_size = (unsigned long) vmem_size;
1136         ps->vmem_rss = (unsigned long) vmem_rss;
1137         ps->stack_size = (unsigned long) stack_size;
1138
1139         if ( (ps_read_io (pid, ps)) == NULL)
1140         {
1141                 /* no io data */
1142                 ps->io_rchar = -1;
1143                 ps->io_wchar = -1;
1144                 ps->io_syscr = -1;
1145                 ps->io_syscw = -1;
1146
1147                 DEBUG("ps_read_process: not get io data for pid %li", pid);
1148         }
1149
1150         if ( report_ctx_switch )
1151         {
1152                 if ( (ps_read_tasks_status(pid, ps)) == NULL)
1153                 {
1154                         ps->cswitch_vol = -1;
1155                         ps->cswitch_invol = -1;
1156
1157                         DEBUG("ps_read_tasks_status: not get context "
1158                                         "switch data for pid %li", pid);
1159                 }
1160         }
1161
1162         /* success */
1163         return (0);
1164 } /* int ps_read_process (...) */
1165
1166 static char *ps_get_cmdline (long pid, char *name, char *buf, size_t buf_len)
1167 {
1168         char  *buf_ptr;
1169         size_t len;
1170
1171         char file[PATH_MAX];
1172         int  fd;
1173
1174         size_t n;
1175
1176         if ((pid < 1) || (NULL == buf) || (buf_len < 2))
1177                 return NULL;
1178
1179         ssnprintf (file, sizeof (file), "/proc/%li/cmdline", pid);
1180
1181         errno = 0;
1182         fd = open (file, O_RDONLY);
1183         if (fd < 0) {
1184                 char errbuf[4096];
1185                 /* ENOENT means the process exited while we were handling it.
1186                  * Don't complain about this, it only fills the logs. */
1187                 if (errno != ENOENT)
1188                         WARNING ("processes plugin: Failed to open `%s': %s.", file,
1189                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1190                 return NULL;
1191         }
1192
1193         buf_ptr = buf;
1194         len     = buf_len;
1195
1196         n = 0;
1197
1198         while (42) {
1199                 ssize_t status;
1200
1201                 status = read (fd, (void *)buf_ptr, len);
1202
1203                 if (status < 0) {
1204                         char errbuf[1024];
1205
1206                         if ((EAGAIN == errno) || (EINTR == errno))
1207                                 continue;
1208
1209                         WARNING ("processes plugin: Failed to read from `%s': %s.", file,
1210                                         sstrerror (errno, errbuf, sizeof (errbuf)));
1211                         close (fd);
1212                         return NULL;
1213                 }
1214
1215                 n += status;
1216
1217                 if (status == 0)
1218                         break;
1219
1220                 buf_ptr += status;
1221                 len     -= status;
1222
1223                 if (len == 0)
1224                         break;
1225         }
1226
1227         close (fd);
1228
1229         if (0 == n) {
1230                 /* cmdline not available; e.g. kernel thread, zombie */
1231                 if (NULL == name)
1232                         return NULL;
1233
1234                 ssnprintf (buf, buf_len, "[%s]", name);
1235                 return buf;
1236         }
1237
1238         assert (n <= buf_len);
1239
1240         if (n == buf_len)
1241                 --n;
1242         buf[n] = '\0';
1243
1244         --n;
1245         /* remove trailing whitespace */
1246         while ((n > 0) && (isspace (buf[n]) || ('\0' == buf[n]))) {
1247                 buf[n] = '\0';
1248                 --n;
1249         }
1250
1251         /* arguments are separated by '\0' in /proc/<pid>/cmdline */
1252         while (n > 0) {
1253                 if ('\0' == buf[n])
1254                         buf[n] = ' ';
1255                 --n;
1256         }
1257         return buf;
1258 } /* char *ps_get_cmdline (...) */
1259
1260 static int read_fork_rate (void)
1261 {
1262         FILE *proc_stat;
1263         char buffer[1024];
1264         value_t value;
1265         _Bool value_valid = 0;
1266
1267         proc_stat = fopen ("/proc/stat", "r");
1268         if (proc_stat == NULL)
1269         {
1270                 char errbuf[1024];
1271                 ERROR ("processes plugin: fopen (/proc/stat) failed: %s",
1272                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1273                 return (-1);
1274         }
1275
1276         while (fgets (buffer, sizeof (buffer), proc_stat) != NULL)
1277         {
1278                 int status;
1279                 char *fields[3];
1280                 int fields_num;
1281
1282                 fields_num = strsplit (buffer, fields,
1283                                 STATIC_ARRAY_SIZE (fields));
1284                 if (fields_num != 2)
1285                         continue;
1286
1287                 if (strcmp ("processes", fields[0]) != 0)
1288                         continue;
1289
1290                 status = parse_value (fields[1], &value, DS_TYPE_DERIVE);
1291                 if (status == 0)
1292                         value_valid = 1;
1293
1294                 break;
1295         }
1296         fclose(proc_stat);
1297
1298         if (!value_valid)
1299                 return (-1);
1300
1301         ps_submit_fork_rate (value.derive);
1302         return (0);
1303 }
1304 #endif /*KERNEL_LINUX */
1305
1306 #if KERNEL_SOLARIS
1307 static char *ps_get_cmdline (long pid, char *name __attribute__((unused)), /* {{{ */
1308     char *buffer, size_t buffer_size)
1309 {
1310         char path[PATH_MAX];
1311         psinfo_t info;
1312         ssize_t status;
1313
1314         snprintf(path, sizeof (path), "/proc/%li/psinfo", pid);
1315
1316         status = read_file_contents (path, (void *) &info, sizeof (info));
1317         if ((status < 0) || (((size_t) status) != sizeof (info)))
1318         {
1319                 ERROR ("processes plugin: Unexpected return value "
1320                                 "while reading \"%s\": "
1321                                 "Returned %zd but expected %zu.",
1322                                 path, status, buffer_size);
1323                 return (NULL);
1324         }
1325
1326         info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
1327         sstrncpy (buffer, info.pr_psargs, buffer_size);
1328
1329         return (buffer);
1330 } /* }}} int ps_get_cmdline */
1331
1332 /*
1333  * Reads process information on the Solaris OS. The information comes mainly from
1334  * /proc/PID/status, /proc/PID/psinfo and /proc/PID/usage
1335  * The values for input and ouput chars are calculated "by hand"
1336  * Added a few "solaris" specific process states as well
1337  */
1338 static int ps_read_process(long pid, procstat_t *ps, char *state)
1339 {
1340         char filename[64];
1341         char f_psinfo[64], f_usage[64];
1342         char *buffer;
1343
1344         pstatus_t *myStatus;
1345         psinfo_t *myInfo;
1346         prusage_t *myUsage;
1347
1348         snprintf(filename, sizeof (filename), "/proc/%li/status", pid);
1349         snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%li/psinfo", pid);
1350         snprintf(f_usage, sizeof (f_usage), "/proc/%li/usage", pid);
1351
1352
1353         buffer = calloc(1, sizeof (pstatus_t));
1354         read_file_contents(filename, buffer, sizeof (pstatus_t));
1355         myStatus = (pstatus_t *) buffer;
1356
1357         buffer = calloc(1, sizeof (psinfo_t));
1358         read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
1359         myInfo = (psinfo_t *) buffer;
1360
1361         buffer = calloc(1, sizeof (prusage_t));
1362         read_file_contents(f_usage, buffer, sizeof (prusage_t));
1363         myUsage = (prusage_t *) buffer;
1364
1365         sstrncpy(ps->name, myInfo->pr_fname, sizeof (myInfo->pr_fname));
1366         ps->num_lwp = myStatus->pr_nlwp;
1367         if (myInfo->pr_wstat != 0) {
1368                 ps->num_proc = 0;
1369                 ps->num_lwp = 0;
1370                 *state = (char) 'Z';
1371
1372                 sfree(myStatus);
1373                 sfree(myInfo);
1374                 sfree(myUsage);
1375                 return (0);
1376         } else {
1377                 ps->num_proc = 1;
1378                 ps->num_lwp = myInfo->pr_nlwp;
1379         }
1380
1381         /*
1382          * Convert system time and user time from nanoseconds to microseconds
1383          * for compatibility with the linux module
1384          */
1385         ps->cpu_system_counter = myStatus -> pr_stime.tv_nsec / 1000;
1386         ps->cpu_user_counter = myStatus -> pr_utime.tv_nsec / 1000;
1387
1388         /*
1389          * Convert rssize from KB to bytes to be consistent w/ the linux module
1390          */
1391         ps->vmem_rss = myInfo->pr_rssize * 1024;
1392         ps->vmem_size = myInfo->pr_size * 1024;
1393         ps->vmem_minflt_counter = myUsage->pr_minf;
1394         ps->vmem_majflt_counter = myUsage->pr_majf;
1395
1396         /*
1397          * TODO: Data and code segment calculations for Solaris
1398          */
1399
1400         ps->vmem_data = -1;
1401         ps->vmem_code = -1;
1402         ps->stack_size = myStatus->pr_stksize;
1403
1404         /*
1405          * Calculating input/ouput chars
1406          * Formula used is total chars / total blocks => chars/block
1407          * then convert input/output blocks to chars
1408          */
1409         ulong_t tot_chars = myUsage->pr_ioch;
1410         ulong_t tot_blocks = myUsage->pr_inblk + myUsage->pr_oublk;
1411         ulong_t chars_per_block = 1;
1412         if (tot_blocks != 0)
1413                 chars_per_block = tot_chars / tot_blocks;
1414         ps->io_rchar = myUsage->pr_inblk * chars_per_block;
1415         ps->io_wchar = myUsage->pr_oublk * chars_per_block;
1416         ps->io_syscr = myUsage->pr_sysc;
1417         ps->io_syscw = myUsage->pr_sysc;
1418
1419         /*
1420          * TODO: context switch counters for Solaris
1421    */
1422         ps->cswitch_vol   = -1;
1423         ps->cswitch_invol = -1;
1424
1425
1426         /*
1427          * TODO: Find way of setting BLOCKED and PAGING status
1428          */
1429
1430         *state = (char) 'R';
1431         if (myStatus->pr_flags & PR_ASLEEP)
1432                 *state = (char) 'S';
1433         else if (myStatus->pr_flags & PR_STOPPED)
1434                 *state = (char) 'T';
1435         else if (myStatus->pr_flags & PR_DETACH)
1436                 *state = (char) 'E';
1437         else if (myStatus->pr_flags & PR_DAEMON)
1438                 *state = (char) 'A';
1439         else if (myStatus->pr_flags & PR_ISSYS)
1440                 *state = (char) 'Y';
1441         else if (myStatus->pr_flags & PR_ORPHAN)
1442                 *state = (char) 'O';
1443
1444         sfree(myStatus);
1445         sfree(myInfo);
1446         sfree(myUsage);
1447
1448         return (0);
1449 }
1450
1451 /*
1452  * Reads the number of threads created since the last reboot. On Solaris these
1453  * are retrieved from kstat (module cpu, name sys, class misc, stat nthreads).
1454  * The result is the sum for all the threads created on each cpu
1455  */
1456 static int read_fork_rate (void)
1457 {
1458         extern kstat_ctl_t *kc;
1459         derive_t result = 0;
1460
1461         if (kc == NULL)
1462                 return (-1);
1463
1464         for (kstat_t *ksp_chain = kc->kc_chain;
1465                         ksp_chain != NULL;
1466                         ksp_chain = ksp_chain->ks_next)
1467         {
1468                 if ((strcmp (ksp_chain->ks_module, "cpu") == 0)
1469                                 && (strcmp (ksp_chain->ks_name, "sys") == 0)
1470                                 && (strcmp (ksp_chain->ks_class, "misc") == 0))
1471                 {
1472                         long long tmp;
1473
1474                         kstat_read (kc, ksp_chain, NULL);
1475
1476                         tmp = get_kstat_value(ksp_chain, "nthreads");
1477                         if (tmp != -1LL)
1478                                 result += tmp;
1479                 }
1480         }
1481
1482         ps_submit_fork_rate (result);
1483         return (0);
1484 }
1485 #endif /* KERNEL_SOLARIS */
1486
1487 #if HAVE_THREAD_INFO
1488 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
1489 {
1490         int mib[4];
1491
1492         struct kinfo_proc kp;
1493         size_t            kp_size;
1494
1495         mib[0] = CTL_KERN;
1496         mib[1] = KERN_PROC;
1497         mib[2] = KERN_PROC_PID;
1498
1499         if (pid_for_task (t, pid) != KERN_SUCCESS)
1500                 return (-1);
1501         mib[3] = *pid;
1502
1503         kp_size = sizeof (kp);
1504         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
1505                 return (-1);
1506
1507         if (name_max_len > (MAXCOMLEN + 1))
1508                 name_max_len = MAXCOMLEN + 1;
1509
1510         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
1511         name[name_max_len - 1] = '\0';
1512
1513         DEBUG ("pid = %i; name = %s;", *pid, name);
1514
1515         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
1516          * `top' does it, because it is a lot of work and only used when
1517          * debugging. -octo */
1518
1519         return (0);
1520 }
1521 #endif /* HAVE_THREAD_INFO */
1522 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
1523
1524 /* do actual readings from kernel */
1525 static int ps_read (void)
1526 {
1527 #if HAVE_THREAD_INFO
1528         kern_return_t            status;
1529
1530         processor_set_t          port_pset_priv;
1531
1532         task_array_t             task_list;
1533         mach_msg_type_number_t   task_list_len;
1534
1535         int                      task_pid;
1536         char                     task_name[MAXCOMLEN + 1];
1537
1538         thread_act_array_t       thread_list;
1539         mach_msg_type_number_t   thread_list_len;
1540         thread_basic_info_data_t thread_data;
1541         mach_msg_type_number_t   thread_data_len;
1542
1543         int running  = 0;
1544         int sleeping = 0;
1545         int zombies  = 0;
1546         int stopped  = 0;
1547         int blocked  = 0;
1548
1549         procstat_t *ps;
1550         procstat_entry_t pse;
1551
1552         ps_list_reset ();
1553
1554         /*
1555          * The Mach-concept is a little different from the traditional UNIX
1556          * concept: All the work is done in threads. Threads are contained in
1557          * `tasks'. Therefore, `task status' doesn't make much sense, since
1558          * it's actually a `thread status'.
1559          * Tasks are assigned to sets of processors, so that's where you go to
1560          * get a list.
1561          */
1562         for (mach_msg_type_number_t pset = 0; pset < pset_list_len; pset++)
1563         {
1564                 if ((status = host_processor_set_priv (port_host_self,
1565                                                 pset_list[pset],
1566                                                 &port_pset_priv)) != KERN_SUCCESS)
1567                 {
1568                         ERROR ("host_processor_set_priv failed: %s\n",
1569                                         mach_error_string (status));
1570                         continue;
1571                 }
1572
1573                 if ((status = processor_set_tasks (port_pset_priv,
1574                                                 &task_list,
1575                                                 &task_list_len)) != KERN_SUCCESS)
1576                 {
1577                         ERROR ("processor_set_tasks failed: %s\n",
1578                                         mach_error_string (status));
1579                         mach_port_deallocate (port_task_self, port_pset_priv);
1580                         continue;
1581                 }
1582
1583                 for (mach_msg_type_number_t task = 0; task < task_list_len; task++)
1584                 {
1585                         ps = NULL;
1586                         if (mach_get_task_name (task_list[task],
1587                                                 &task_pid,
1588                                                 task_name, PROCSTAT_NAME_LEN) == 0)
1589                         {
1590                                 /* search for at least one match */
1591                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
1592                                         /* FIXME: cmdline should be here instead of NULL */
1593                                         if (ps_list_match (task_name, NULL, ps) == 1)
1594                                                 break;
1595                         }
1596
1597                         /* Collect more detailed statistics for this process */
1598                         if (ps != NULL)
1599                         {
1600                                 task_basic_info_data_t        task_basic_info;
1601                                 mach_msg_type_number_t        task_basic_info_len;
1602                                 task_events_info_data_t       task_events_info;
1603                                 mach_msg_type_number_t        task_events_info_len;
1604                                 task_absolutetime_info_data_t task_absolutetime_info;
1605                                 mach_msg_type_number_t        task_absolutetime_info_len;
1606
1607                                 memset (&pse, '\0', sizeof (pse));
1608                                 pse.id = task_pid;
1609
1610                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
1611                                 status = task_info (task_list[task],
1612                                                 TASK_BASIC_INFO,
1613                                                 (task_info_t) &task_basic_info,
1614                                                 &task_basic_info_len);
1615                                 if (status != KERN_SUCCESS)
1616                                 {
1617                                         ERROR ("task_info failed: %s",
1618                                                         mach_error_string (status));
1619                                         continue; /* with next thread_list */
1620                                 }
1621
1622                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
1623                                 status = task_info (task_list[task],
1624                                                 TASK_EVENTS_INFO,
1625                                                 (task_info_t) &task_events_info,
1626                                                 &task_events_info_len);
1627                                 if (status != KERN_SUCCESS)
1628                                 {
1629                                         ERROR ("task_info failed: %s",
1630                                                         mach_error_string (status));
1631                                         continue; /* with next thread_list */
1632                                 }
1633
1634                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
1635                                 status = task_info (task_list[task],
1636                                                 TASK_ABSOLUTETIME_INFO,
1637                                                 (task_info_t) &task_absolutetime_info,
1638                                                 &task_absolutetime_info_len);
1639                                 if (status != KERN_SUCCESS)
1640                                 {
1641                                         ERROR ("task_info failed: %s",
1642                                                         mach_error_string (status));
1643                                         continue; /* with next thread_list */
1644                                 }
1645
1646                                 pse.num_proc++;
1647                                 pse.vmem_size = task_basic_info.virtual_size;
1648                                 pse.vmem_rss = task_basic_info.resident_size;
1649                                 /* Does not seem to be easily exposed */
1650                                 pse.vmem_data = 0;
1651                                 pse.vmem_code = 0;
1652
1653                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
1654                                 pse.vmem_majflt_counter = task_events_info.faults;
1655
1656                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
1657                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
1658
1659                                 /* context switch counters not implemented */
1660                                 pse.cswitch_vol   = -1;
1661                                 pse.cswitch_invol = -1;
1662                         }
1663
1664                         status = task_threads (task_list[task], &thread_list,
1665                                         &thread_list_len);
1666                         if (status != KERN_SUCCESS)
1667                         {
1668                                 /* Apple's `top' treats this case a zombie. It
1669                                  * makes sense to some extend: A `zombie'
1670                                  * thread is nonsense, since the task/process
1671                                  * is dead. */
1672                                 zombies++;
1673                                 DEBUG ("task_threads failed: %s",
1674                                                 mach_error_string (status));
1675                                 if (task_list[task] != port_task_self)
1676                                         mach_port_deallocate (port_task_self,
1677                                                         task_list[task]);
1678                                 continue; /* with next task_list */
1679                         }
1680
1681                         for (mach_msg_type_number_t thread = 0; thread < thread_list_len; thread++)
1682                         {
1683                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
1684                                 status = thread_info (thread_list[thread],
1685                                                 THREAD_BASIC_INFO,
1686                                                 (thread_info_t) &thread_data,
1687                                                 &thread_data_len);
1688                                 if (status != KERN_SUCCESS)
1689                                 {
1690                                         ERROR ("thread_info failed: %s",
1691                                                         mach_error_string (status));
1692                                         if (task_list[task] != port_task_self)
1693                                                 mach_port_deallocate (port_task_self,
1694                                                                 thread_list[thread]);
1695                                         continue; /* with next thread_list */
1696                                 }
1697
1698                                 if (ps != NULL)
1699                                         pse.num_lwp++;
1700
1701                                 switch (thread_data.run_state)
1702                                 {
1703                                         case TH_STATE_RUNNING:
1704                                                 running++;
1705                                                 break;
1706                                         case TH_STATE_STOPPED:
1707                                         /* What exactly is `halted'? */
1708                                         case TH_STATE_HALTED:
1709                                                 stopped++;
1710                                                 break;
1711                                         case TH_STATE_WAITING:
1712                                                 sleeping++;
1713                                                 break;
1714                                         case TH_STATE_UNINTERRUPTIBLE:
1715                                                 blocked++;
1716                                                 break;
1717                                         /* There is no `zombie' case here,
1718                                          * since there are no zombie-threads.
1719                                          * There's only zombie tasks, which are
1720                                          * handled above. */
1721                                         default:
1722                                                 WARNING ("Unknown thread status: %i",
1723                                                                 thread_data.run_state);
1724                                                 break;
1725                                 } /* switch (thread_data.run_state) */
1726
1727                                 if (task_list[task] != port_task_self)
1728                                 {
1729                                         status = mach_port_deallocate (port_task_self,
1730                                                         thread_list[thread]);
1731                                         if (status != KERN_SUCCESS)
1732                                                 ERROR ("mach_port_deallocate failed: %s",
1733                                                                 mach_error_string (status));
1734                                 }
1735                         } /* for (thread_list) */
1736
1737                         if ((status = vm_deallocate (port_task_self,
1738                                                         (vm_address_t) thread_list,
1739                                                         thread_list_len * sizeof (thread_act_t)))
1740                                         != KERN_SUCCESS)
1741                         {
1742                                 ERROR ("vm_deallocate failed: %s",
1743                                                 mach_error_string (status));
1744                         }
1745                         thread_list = NULL;
1746                         thread_list_len = 0;
1747
1748                         /* Only deallocate the task port, if it isn't our own.
1749                          * Don't know what would happen in that case, but this
1750                          * is what Apple's top does.. ;) */
1751                         if (task_list[task] != port_task_self)
1752                         {
1753                                 status = mach_port_deallocate (port_task_self,
1754                                                 task_list[task]);
1755                                 if (status != KERN_SUCCESS)
1756                                         ERROR ("mach_port_deallocate failed: %s",
1757                                                         mach_error_string (status));
1758                         }
1759
1760                         if (ps != NULL)
1761                                 /* FIXME: cmdline should be here instead of NULL */
1762                                 ps_list_add (task_name, NULL, &pse);
1763                 } /* for (task_list) */
1764
1765                 if ((status = vm_deallocate (port_task_self,
1766                                 (vm_address_t) task_list,
1767                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1768                 {
1769                         ERROR ("vm_deallocate failed: %s",
1770                                         mach_error_string (status));
1771                 }
1772                 task_list = NULL;
1773                 task_list_len = 0;
1774
1775                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1776                                 != KERN_SUCCESS)
1777                 {
1778                         ERROR ("mach_port_deallocate failed: %s",
1779                                         mach_error_string (status));
1780                 }
1781         } /* for (pset_list) */
1782
1783         ps_submit_state ("running", running);
1784         ps_submit_state ("sleeping", sleeping);
1785         ps_submit_state ("zombies", zombies);
1786         ps_submit_state ("stopped", stopped);
1787         ps_submit_state ("blocked", blocked);
1788
1789         for (ps = list_head_g; ps != NULL; ps = ps->next)
1790                 ps_submit_proc_list (ps);
1791 /* #endif HAVE_THREAD_INFO */
1792
1793 #elif KERNEL_LINUX
1794         int running  = 0;
1795         int sleeping = 0;
1796         int zombies  = 0;
1797         int stopped  = 0;
1798         int paging   = 0;
1799         int blocked  = 0;
1800
1801         struct dirent *ent;
1802         DIR           *proc;
1803         long           pid;
1804
1805         char cmdline[CMDLINE_BUFFER_SIZE];
1806
1807         int        status;
1808         procstat_t ps;
1809         procstat_entry_t pse;
1810         char       state;
1811
1812         running = sleeping = zombies = stopped = paging = blocked = 0;
1813         ps_list_reset ();
1814
1815         if ((proc = opendir ("/proc")) == NULL)
1816         {
1817                 char errbuf[1024];
1818                 ERROR ("Cannot open `/proc': %s",
1819                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1820                 return (-1);
1821         }
1822
1823         while ((ent = readdir (proc)) != NULL)
1824         {
1825                 if (!isdigit (ent->d_name[0]))
1826                         continue;
1827
1828                 if ((pid = atol (ent->d_name)) < 1)
1829                         continue;
1830
1831                 status = ps_read_process (pid, &ps, &state);
1832                 if (status != 0)
1833                 {
1834                         DEBUG ("ps_read_process failed: %i", status);
1835                         continue;
1836                 }
1837
1838                 memset (&pse, 0, sizeof (pse));
1839                 pse.id       = pid;
1840                 pse.age      = 0;
1841
1842                 pse.num_proc   = ps.num_proc;
1843                 pse.num_lwp    = ps.num_lwp;
1844                 pse.vmem_size  = ps.vmem_size;
1845                 pse.vmem_rss   = ps.vmem_rss;
1846                 pse.vmem_data  = ps.vmem_data;
1847                 pse.vmem_code  = ps.vmem_code;
1848                 pse.stack_size = ps.stack_size;
1849
1850                 pse.vmem_minflt = 0;
1851                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1852                 pse.vmem_majflt = 0;
1853                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1854
1855                 pse.cpu_user = 0;
1856                 pse.cpu_user_counter = ps.cpu_user_counter;
1857                 pse.cpu_system = 0;
1858                 pse.cpu_system_counter = ps.cpu_system_counter;
1859
1860                 pse.io_rchar = ps.io_rchar;
1861                 pse.io_wchar = ps.io_wchar;
1862                 pse.io_syscr = ps.io_syscr;
1863                 pse.io_syscw = ps.io_syscw;
1864
1865                 pse.cswitch_vol = ps.cswitch_vol;
1866                 pse.cswitch_invol = ps.cswitch_invol;
1867
1868                 switch (state)
1869                 {
1870                         case 'R': running++;  break;
1871                         case 'S': sleeping++; break;
1872                         case 'D': blocked++;  break;
1873                         case 'Z': zombies++;  break;
1874                         case 'T': stopped++;  break;
1875                         case 'W': paging++;   break;
1876                 }
1877
1878                 ps_list_add (ps.name,
1879                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
1880                                 &pse);
1881         }
1882
1883         closedir (proc);
1884
1885         ps_submit_state ("running",  running);
1886         ps_submit_state ("sleeping", sleeping);
1887         ps_submit_state ("zombies",  zombies);
1888         ps_submit_state ("stopped",  stopped);
1889         ps_submit_state ("paging",   paging);
1890         ps_submit_state ("blocked",  blocked);
1891
1892         for (procstat_t *ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1893                 ps_submit_proc_list (ps_ptr);
1894
1895         read_fork_rate();
1896 /* #endif KERNEL_LINUX */
1897
1898 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD
1899         int running  = 0;
1900         int sleeping = 0;
1901         int zombies  = 0;
1902         int stopped  = 0;
1903         int blocked  = 0;
1904         int idle     = 0;
1905         int wait     = 0;
1906
1907         kvm_t *kd;
1908         char errbuf[_POSIX2_LINE_MAX];
1909         struct kinfo_proc *procs;          /* array of processes */
1910         struct kinfo_proc *proc_ptr = NULL;
1911         int count;                         /* returns number of processes */
1912
1913         procstat_entry_t pse;
1914
1915         ps_list_reset ();
1916
1917         /* Open the kvm interface, get a descriptor */
1918         kd = kvm_openfiles (NULL, "/dev/null", NULL, 0, errbuf);
1919         if (kd == NULL)
1920         {
1921                 ERROR ("processes plugin: Cannot open kvm interface: %s",
1922                                 errbuf);
1923                 return (0);
1924         }
1925
1926         /* Get the list of processes. */
1927         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count);
1928         if (procs == NULL)
1929         {
1930                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
1931                                 kvm_geterr(kd));
1932                 kvm_close (kd);
1933                 return (0);
1934         }
1935
1936         /* Iterate through the processes in kinfo_proc */
1937         for (int i = 0; i < count; i++)
1938         {
1939                 /* Create only one process list entry per _process_, i.e.
1940                  * filter out threads (duplicate PID entries). */
1941                 if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid))
1942                 {
1943                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
1944                         _Bool have_cmdline = 0;
1945
1946                         proc_ptr = &(procs[i]);
1947                         /* Don't probe system processes and processes without arguments */
1948                         if (((procs[i].ki_flag & P_SYSTEM) == 0)
1949                                         && (procs[i].ki_args != NULL))
1950                         {
1951                                 char **argv;
1952                                 int argc;
1953                                 int status;
1954
1955                                 /* retrieve the arguments */
1956                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
1957                                 argc = 0;
1958                                 if ((argv != NULL) && (argv[0] != NULL))
1959                                 {
1960                                         while (argv[argc] != NULL)
1961                                                 argc++;
1962
1963                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
1964                                         if (status < 0)
1965                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
1966                                         else
1967                                                 have_cmdline = 1;
1968                                 }
1969                         } /* if (process has argument list) */
1970
1971                         pse.id       = procs[i].ki_pid;
1972                         pse.age      = 0;
1973
1974                         pse.num_proc = 1;
1975                         pse.num_lwp  = procs[i].ki_numthreads;
1976
1977                         pse.vmem_size = procs[i].ki_size;
1978                         pse.vmem_rss = procs[i].ki_rssize * pagesize;
1979                         pse.vmem_data = procs[i].ki_dsize * pagesize;
1980                         pse.vmem_code = procs[i].ki_tsize * pagesize;
1981                         pse.stack_size = procs[i].ki_ssize * pagesize;
1982                         pse.vmem_minflt = 0;
1983                         pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1984                         pse.vmem_majflt = 0;
1985                         pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1986
1987                         pse.cpu_user = 0;
1988                         pse.cpu_system = 0;
1989                         pse.cpu_user_counter = 0;
1990                         pse.cpu_system_counter = 0;
1991                         /*
1992                          * The u-area might be swapped out, and we can't get
1993                          * at it because we have a crashdump and no swap.
1994                          * If it's here fill in these fields, otherwise, just
1995                          * leave them 0.
1996                          */
1997                         if (procs[i].ki_flag & P_INMEM)
1998                         {
1999                                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_usec
2000                                         + (1000000lu * procs[i].ki_rusage.ru_utime.tv_sec);
2001                                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_usec
2002                                         + (1000000lu * procs[i].ki_rusage.ru_stime.tv_sec);
2003                         }
2004
2005                         /* no I/O data */
2006                         pse.io_rchar = -1;
2007                         pse.io_wchar = -1;
2008                         pse.io_syscr = -1;
2009                         pse.io_syscw = -1;
2010
2011                         /* context switch counters not implemented */
2012                         pse.cswitch_vol   = -1;
2013                         pse.cswitch_invol = -1;
2014
2015                         ps_list_add (procs[i].ki_comm, have_cmdline ? cmdline : NULL, &pse);
2016
2017                         switch (procs[i].ki_stat)
2018                         {
2019                                 case SSTOP:     stopped++;      break;
2020                                 case SSLEEP:    sleeping++;     break;
2021                                 case SRUN:      running++;      break;
2022                                 case SIDL:      idle++;         break;
2023                                 case SWAIT:     wait++;         break;
2024                                 case SLOCK:     blocked++;      break;
2025                                 case SZOMB:     zombies++;      break;
2026                         }
2027                 } /* if ((proc_ptr == NULL) || (proc_ptr->ki_pid != procs[i].ki_pid)) */
2028         }
2029
2030         kvm_close(kd);
2031
2032         ps_submit_state ("running",  running);
2033         ps_submit_state ("sleeping", sleeping);
2034         ps_submit_state ("zombies",  zombies);
2035         ps_submit_state ("stopped",  stopped);
2036         ps_submit_state ("blocked",  blocked);
2037         ps_submit_state ("idle",     idle);
2038         ps_submit_state ("wait",     wait);
2039
2040         for (procstat_t *ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2041                 ps_submit_proc_list (ps_ptr);
2042 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_FREEBSD */
2043
2044 #elif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD
2045         int running  = 0;
2046         int sleeping = 0;
2047         int zombies  = 0;
2048         int stopped  = 0;
2049         int onproc   = 0;
2050         int idle     = 0;
2051         int dead     = 0;
2052
2053         kvm_t *kd;
2054         char errbuf[1024];
2055         struct kinfo_proc *procs;          /* array of processes */
2056         struct kinfo_proc *proc_ptr = NULL;
2057         int count;                         /* returns number of processes */
2058
2059         procstat_entry_t pse;
2060
2061         ps_list_reset ();
2062
2063         /* Open the kvm interface, get a descriptor */
2064         kd = kvm_open (NULL, NULL, NULL, 0, errbuf);
2065         if (kd == NULL)
2066         {
2067                 ERROR ("processes plugin: Cannot open kvm interface: %s",
2068                                 errbuf);
2069                 return (0);
2070         }
2071
2072         /* Get the list of processes. */
2073         procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
2074         if (procs == NULL)
2075         {
2076                 ERROR ("processes plugin: Cannot get kvm processes list: %s",
2077                                 kvm_geterr(kd));
2078                 kvm_close (kd);
2079                 return (0);
2080         }
2081
2082         /* Iterate through the processes in kinfo_proc */
2083         for (int i = 0; i < count; i++)
2084         {
2085                 /* Create only one process list entry per _process_, i.e.
2086                  * filter out threads (duplicate PID entries). */
2087                 if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid))
2088                 {
2089                         char cmdline[CMDLINE_BUFFER_SIZE] = "";
2090                         _Bool have_cmdline = 0;
2091
2092                         proc_ptr = &(procs[i]);
2093                         /* Don't probe zombie processes  */
2094                         if (!P_ZOMBIE(proc_ptr))
2095                         {
2096                                 char **argv;
2097                                 int argc;
2098                                 int status;
2099
2100                                 /* retrieve the arguments */
2101                                 argv = kvm_getargv (kd, proc_ptr, /* nchr = */ 0);
2102                                 argc = 0;
2103                                 if ((argv != NULL) && (argv[0] != NULL))
2104                                 {
2105                                         while (argv[argc] != NULL)
2106                                                 argc++;
2107
2108                                         status = strjoin (cmdline, sizeof (cmdline), argv, argc, " ");
2109                                         if (status < 0)
2110                                                 WARNING ("processes plugin: Command line did not fit into buffer.");
2111                                         else
2112                                                 have_cmdline = 1;
2113                                 }
2114                         } /* if (process has argument list) */
2115
2116                         memset (&pse, 0, sizeof (pse));
2117                         pse.id       = procs[i].p_pid;
2118                         pse.age      = 0;
2119
2120                         pse.num_proc = 1;
2121                         pse.num_lwp  = 1; /* XXX: accumulate p_tid values for a single p_pid ? */
2122
2123                         pse.vmem_rss = procs[i].p_vm_rssize * pagesize;
2124                         pse.vmem_data = procs[i].p_vm_dsize * pagesize;
2125                         pse.vmem_code = procs[i].p_vm_tsize * pagesize;
2126                         pse.stack_size = procs[i].p_vm_ssize * pagesize;
2127                         pse.vmem_size = pse.stack_size + pse.vmem_code + pse.vmem_data;
2128                         pse.vmem_minflt = 0;
2129                         pse.vmem_minflt_counter = procs[i].p_uru_minflt;
2130                         pse.vmem_majflt = 0;
2131                         pse.vmem_majflt_counter = procs[i].p_uru_majflt;
2132
2133                         pse.cpu_user = 0;
2134                         pse.cpu_system = 0;
2135                         pse.cpu_user_counter = procs[i].p_uutime_usec +
2136                                                 (1000000lu * procs[i].p_uutime_sec);
2137                         pse.cpu_system_counter = procs[i].p_ustime_usec +
2138                                                 (1000000lu * procs[i].p_ustime_sec);
2139
2140                         /* no I/O data */
2141                         pse.io_rchar = -1;
2142                         pse.io_wchar = -1;
2143                         pse.io_syscr = -1;
2144                         pse.io_syscw = -1;
2145
2146                         /* context switch counters not implemented */
2147                         pse.cswitch_vol   = -1;
2148                         pse.cswitch_invol = -1;
2149
2150                         ps_list_add (procs[i].p_comm, have_cmdline ? cmdline : NULL, &pse);
2151
2152                         switch (procs[i].p_stat)
2153                         {
2154                                 case SSTOP:     stopped++;      break;
2155                                 case SSLEEP:    sleeping++;     break;
2156                                 case SRUN:      running++;      break;
2157                                 case SIDL:      idle++;         break;
2158                                 case SONPROC:   onproc++;       break;
2159                                 case SDEAD:     dead++;         break;
2160                                 case SZOMB:     zombies++;      break;
2161                         }
2162                 } /* if ((proc_ptr == NULL) || (proc_ptr->p_pid != procs[i].p_pid)) */
2163         }
2164
2165         kvm_close(kd);
2166
2167         ps_submit_state ("running",  running);
2168         ps_submit_state ("sleeping", sleeping);
2169         ps_submit_state ("zombies",  zombies);
2170         ps_submit_state ("stopped",  stopped);
2171         ps_submit_state ("onproc",   onproc);
2172         ps_submit_state ("idle",     idle);
2173         ps_submit_state ("dead",     dead);
2174
2175         for (procstat_t *ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2176                 ps_submit_proc_list (ps_ptr);
2177 /* #endif HAVE_LIBKVM_GETPROCS && HAVE_STRUCT_KINFO_PROC_OPENBSD */
2178
2179 #elif HAVE_PROCINFO_H
2180         /* AIX */
2181         int running  = 0;
2182         int sleeping = 0;
2183         int zombies  = 0;
2184         int stopped  = 0;
2185         int paging   = 0;
2186         int blocked  = 0;
2187
2188         pid_t pindex = 0;
2189         int nprocs;
2190
2191         procstat_entry_t pse;
2192
2193         ps_list_reset ();
2194         while ((nprocs = getprocs64 (procentry, sizeof(struct procentry64),
2195                                         /* fdsinfo = */ NULL, sizeof(struct fdsinfo64),
2196                                         &pindex, MAXPROCENTRY)) > 0)
2197         {
2198                 for (int i = 0; i < nprocs; i++)
2199                 {
2200                         tid64_t thindex;
2201                         int nthreads;
2202                         char arglist[MAXARGLN+1];
2203                         char *cargs;
2204                         char *cmdline;
2205
2206                         if (procentry[i].pi_state == SNONE) continue;
2207                         /* if (procentry[i].pi_state == SZOMB)  FIXME */
2208
2209                         cmdline = procentry[i].pi_comm;
2210                         cargs = procentry[i].pi_comm;
2211                         if ( procentry[i].pi_flags & SKPROC )
2212                         {
2213                                 if (procentry[i].pi_pid == 0)
2214                                         cmdline = "swapper";
2215                                 cargs = cmdline;
2216                         }
2217                         else
2218                         {
2219                                 if (getargs(&procentry[i], sizeof(struct procentry64), arglist, MAXARGLN) >= 0)
2220                                 {
2221                                         int n;
2222
2223                                         n = -1;
2224                                         while (++n < MAXARGLN)
2225                                         {
2226                                                 if (arglist[n] == '\0')
2227                                                 {
2228                                                         if (arglist[n+1] == '\0')
2229                                                                 break;
2230                                                         arglist[n] = ' ';
2231                                                 }
2232                                         }
2233                                         cargs = arglist;
2234                                 }
2235                         }
2236
2237                         pse.id       = procentry[i].pi_pid;
2238                         pse.age      = 0;
2239                         pse.num_lwp  = procentry[i].pi_thcount;
2240                         pse.num_proc = 1;
2241
2242                         thindex=0;
2243                         while ((nthreads = getthrds64(procentry[i].pi_pid,
2244                                                         thrdentry, sizeof(struct thrdentry64),
2245                                                         &thindex, MAXTHRDENTRY)) > 0)
2246                         {
2247                                 int j;
2248
2249                                 for (j=0; j< nthreads; j++)
2250                                 {
2251                                         switch (thrdentry[j].ti_state)
2252                                         {
2253                                                 /* case TSNONE: break; */
2254                                                 case TSIDL:     blocked++;      break; /* FIXME is really blocked */
2255                                                 case TSRUN:     running++;      break;
2256                                                 case TSSLEEP:   sleeping++;     break;
2257                                                 case TSSWAP:    paging++;       break;
2258                                                 case TSSTOP:    stopped++;      break;
2259                                                 case TSZOMB:    zombies++;      break;
2260                                         }
2261                                 }
2262                                 if (nthreads < MAXTHRDENTRY)
2263                                         break;
2264                         }
2265
2266                         pse.cpu_user = 0;
2267                         /* tv_usec is nanosec ??? */
2268                         pse.cpu_user_counter = procentry[i].pi_ru.ru_utime.tv_sec * 1000000 +
2269                                 procentry[i].pi_ru.ru_utime.tv_usec / 1000;
2270
2271                         pse.cpu_system = 0;
2272                         /* tv_usec is nanosec ??? */
2273                         pse.cpu_system_counter = procentry[i].pi_ru.ru_stime.tv_sec * 1000000 +
2274                                 procentry[i].pi_ru.ru_stime.tv_usec / 1000;
2275
2276                         pse.vmem_minflt = 0;
2277                         pse.vmem_minflt_counter = procentry[i].pi_minflt;
2278                         pse.vmem_majflt = 0;
2279                         pse.vmem_majflt_counter = procentry[i].pi_majflt;
2280
2281                         pse.vmem_size = procentry[i].pi_tsize + procentry[i].pi_dvm * pagesize;
2282                         pse.vmem_rss = (procentry[i].pi_drss + procentry[i].pi_trss) * pagesize;
2283                         /* Not supported */
2284                         pse.vmem_data = 0;
2285                         pse.vmem_code = 0;
2286                         pse.stack_size =  0;
2287
2288                         pse.io_rchar = -1;
2289                         pse.io_wchar = -1;
2290                         pse.io_syscr = -1;
2291                         pse.io_syscw = -1;
2292
2293                         pse.cswitch_vol   = -1;
2294                         pse.cswitch_invol = -1;
2295
2296                         ps_list_add (cmdline, cargs, &pse);
2297                 } /* for (i = 0 .. nprocs) */
2298
2299                 if (nprocs < MAXPROCENTRY)
2300                         break;
2301         } /* while (getprocs64() > 0) */
2302         ps_submit_state ("running",  running);
2303         ps_submit_state ("sleeping", sleeping);
2304         ps_submit_state ("zombies",  zombies);
2305         ps_submit_state ("stopped",  stopped);
2306         ps_submit_state ("paging",   paging);
2307         ps_submit_state ("blocked",  blocked);
2308
2309         for (procstat_t *ps = list_head_g; ps != NULL; ps = ps->next)
2310                 ps_submit_proc_list (ps);
2311 /* #endif HAVE_PROCINFO_H */
2312
2313 #elif KERNEL_SOLARIS
2314         /*
2315          * The Solaris section adds a few more process states and removes some
2316          * process states compared to linux. Most notably there is no "PAGING"
2317          * and "BLOCKED" state for a process.  The rest is similar to the linux
2318          * code.
2319          */
2320         int running = 0;
2321         int sleeping = 0;
2322         int zombies = 0;
2323         int stopped = 0;
2324         int detached = 0;
2325         int daemon = 0;
2326         int system = 0;
2327         int orphan = 0;
2328
2329         struct dirent *ent;
2330         DIR *proc;
2331
2332         int status;
2333         char state;
2334
2335         char cmdline[PRARGSZ];
2336
2337         ps_list_reset ();
2338
2339         proc = opendir ("/proc");
2340         if (proc == NULL)
2341                 return (-1);
2342
2343         while ((ent = readdir(proc)) != NULL)
2344         {
2345                 long pid;
2346                 struct procstat ps;
2347                 procstat_entry_t pse;
2348                 char *endptr;
2349
2350                 if (!isdigit ((int) ent->d_name[0]))
2351                         continue;
2352
2353                 pid = strtol (ent->d_name, &endptr, 10);
2354                 if (*endptr != 0) /* value didn't completely parse as a number */
2355                         continue;
2356
2357                 status = ps_read_process (pid, &ps, &state);
2358                 if (status != 0)
2359                 {
2360                         DEBUG("ps_read_process failed: %i", status);
2361                         continue;
2362                 }
2363
2364                 memset (&pse, 0, sizeof (pse));
2365                 pse.id = pid;
2366                 pse.age = 0;
2367
2368                 pse.num_proc   = ps.num_proc;
2369                 pse.num_lwp    = ps.num_lwp;
2370                 pse.vmem_size  = ps.vmem_size;
2371                 pse.vmem_rss   = ps.vmem_rss;
2372                 pse.vmem_data  = ps.vmem_data;
2373                 pse.vmem_code  = ps.vmem_code;
2374                 pse.stack_size = ps.stack_size;
2375
2376                 pse.vmem_minflt = 0;
2377                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
2378                 pse.vmem_majflt = 0;
2379                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
2380
2381                 pse.cpu_user = 0;
2382                 pse.cpu_user_counter = ps.cpu_user_counter;
2383                 pse.cpu_system = 0;
2384                 pse.cpu_system_counter = ps.cpu_system_counter;
2385
2386                 pse.io_rchar = ps.io_rchar;
2387                 pse.io_wchar = ps.io_wchar;
2388                 pse.io_syscr = ps.io_syscr;
2389                 pse.io_syscw = ps.io_syscw;
2390
2391                 pse.cswitch_vol = -1;
2392                 pse.cswitch_invol = -1;
2393
2394                 switch (state)
2395                 {
2396                         case 'R': running++;  break;
2397                         case 'S': sleeping++; break;
2398                         case 'E': detached++; break;
2399                         case 'Z': zombies++;  break;
2400                         case 'T': stopped++;  break;
2401                         case 'A': daemon++;   break;
2402                         case 'Y': system++;   break;
2403                         case 'O': orphan++;   break;
2404                 }
2405
2406
2407                 ps_list_add (ps.name,
2408                                 ps_get_cmdline (pid, ps.name, cmdline, sizeof (cmdline)),
2409                                 &pse);
2410         } /* while(readdir) */
2411         closedir (proc);
2412
2413         ps_submit_state ("running",  running);
2414         ps_submit_state ("sleeping", sleeping);
2415         ps_submit_state ("zombies",  zombies);
2416         ps_submit_state ("stopped",  stopped);
2417         ps_submit_state ("detached", detached);
2418         ps_submit_state ("daemon",   daemon);
2419         ps_submit_state ("system",   system);
2420         ps_submit_state ("orphan",   orphan);
2421
2422         for (procstat_t *ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
2423                 ps_submit_proc_list (ps_ptr);
2424
2425         read_fork_rate();
2426 #endif /* KERNEL_SOLARIS */
2427
2428         return (0);
2429 } /* int ps_read */
2430
2431 void module_register (void)
2432 {
2433         plugin_register_complex_config ("processes", ps_config);
2434         plugin_register_init ("processes", ps_init);
2435         plugin_register_read ("processes", ps_read);
2436 } /* void module_register */