src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006  Florian Forster (Mach code)
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  *
  20  * Authors:
  21  *   Lyonel Vincent <lyonel at ezix.org>
  22  *   Florian octo Forster <octo at verplant.org>
  23  **/
  24
  25 #include "collectd.h"
  26 #include "common.h"
  27 #include "plugin.h"
  28 #include "utils_debug.h"
  29 #include "configfile.h"
  30
  31 /* Include header files for the mach system, if they exist.. */
  32 #if HAVE_THREAD_INFO
  33 #  if HAVE_MACH_MACH_INIT_H
  34 #    include <mach/mach_init.h>
  35 #  endif
  36 #  if HAVE_MACH_HOST_PRIV_H
  37 #    include <mach/host_priv.h>
  38 #  endif
  39 #  if HAVE_MACH_MACH_ERROR_H
  40 #    include <mach/mach_error.h>
  41 #  endif
  42 #  if HAVE_MACH_MACH_HOST_H
  43 #    include <mach/mach_host.h>
  44 #  endif
  45 #  if HAVE_MACH_MACH_PORT_H
  46 #    include <mach/mach_port.h>
  47 #  endif
  48 #  if HAVE_MACH_MACH_TYPES_H
  49 #    include <mach/mach_types.h>
  50 #  endif
  51 #  if HAVE_MACH_MESSAGE_H
  52 #    include <mach/message.h>
  53 #  endif
  54 #  if HAVE_MACH_PROCESSOR_SET_H
  55 #    include <mach/processor_set.h>
  56 #  endif
  57 #  if HAVE_MACH_TASK_H
  58 #    include <mach/task.h>
  59 #  endif
  60 #  if HAVE_MACH_THREAD_ACT_H
  61 #    include <mach/thread_act.h>
  62 #  endif
  63 #  if HAVE_MACH_VM_REGION_H
  64 #    include <mach/vm_region.h>
  65 #  endif
  66 #  if HAVE_MACH_VM_MAP_H
  67 #    include <mach/vm_map.h>
  68 #  endif
  69 #  if HAVE_MACH_VM_PROT_H
  70 #    include <mach/vm_prot.h>
  71 #  endif
  72 /* #endif HAVE_THREAD_INFO */
  73
  74 #elif KERNEL_LINUX
  75 #  if HAVE_LINUX_CONFIG_H
  76 #    include <linux/config.h>
  77 #  endif
  78 #  ifndef CONFIG_HZ
  79 #    define CONFIG_HZ 100
  80 #  endif
  81 #endif /* KERNEL_LINUX */
  82
  83 #define MODULE_NAME "processes"
  84
  85 #if HAVE_THREAD_INFO || KERNEL_LINUX
  86 # define PROCESSES_HAVE_READ 1
  87 #else
  88 # define PROCESSES_HAVE_READ 0
  89 #endif
  90
  91 #define BUFSIZE 256
  92
  93 static char *processes_file = "processes.rrd";
  94 static char *processes_ds_def[] =
  95 {
  96         "DS:running:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  97         "DS:sleeping:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  98         "DS:zombies:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  99         "DS:stopped:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 100         "DS:paging:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 101         "DS:blocked:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 102         NULL
 103 };
 104 static int processes_ds_num = 6;
 105
 106 static char *config_keys[] =
 107 {
 108         "CollectName",
 109         NULL
 110 };
 111 static int config_keys_num = 1;
 112
 113 typedef struct procstat
 114 {
 115 #define PROCSTAT_NAME_LEN 256
 116         char               name[PROCSTAT_NAME_LEN];
 117         unsigned int       num_proc;
 118         unsigned int       num_lwp;
 119         unsigned long      vmem_rss;
 120         unsigned long      vmem_minflt;
 121         unsigned long      vmem_majflt;
 122         unsigned long long cpu_user;
 123         unsigned long long cpu_system;
 124         struct procstat   *next;
 125 } procstat_t;
 126
 127 static procstat_t *list_head_g = NULL;
 128
 129 #if HAVE_THREAD_INFO
 130 static mach_port_t port_host_self;
 131 static mach_port_t port_task_self;
 132
 133 static processor_set_name_array_t pset_list;
 134 static mach_msg_type_number_t     pset_list_len;
 135 /* #endif HAVE_THREAD_INFO */
 136
 137 #elif KERNEL_LINUX
 138 static long pagesize_g;
 139 #endif /* KERNEL_LINUX */
 140
 141 static procstat_t *ps_list_append (procstat_t *list, const char *name)
 142 {
 143         procstat_t *new;
 144         procstat_t *ptr;
 145
 146         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 147                 return (NULL);
 148         memset (new, 0, sizeof (procstat_t));
 149         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 150
 151         for (ptr = list; ptr != NULL; ptr = ptr->next)
 152                 if (ptr->next == NULL)
 153                         break;
 154
 155         if (ptr != NULL)
 156                 ptr->next = new;
 157
 158         return (new);
 159 }
 160
 161 static void ps_list_add (procstat_t *list, procstat_t *entry)
 162 {
 163         procstat_t *ptr;
 164
 165         ptr = list;
 166         while ((ptr != NULL) && (strcmp (ptr->name, entry->name) != 0))
 167                 ptr = ptr->next;
 168
 169         if (ptr == NULL)
 170                 return;
 171
 172         ptr->num_proc    += entry->num_proc;
 173         ptr->num_lwp     += entry->num_lwp;
 174         ptr->vmem_rss    += entry->vmem_rss;
 175         ptr->vmem_minflt += entry->vmem_minflt;
 176         ptr->vmem_majflt += entry->vmem_majflt;
 177         ptr->cpu_user    += entry->cpu_user;
 178         ptr->cpu_system  += entry->cpu_system;
 179 }
 180
 181 static void ps_list_reset (procstat_t *ps)
 182 {
 183         while (ps != NULL)
 184         {
 185                 ps->num_proc    = 0;
 186                 ps->num_lwp     = 0;
 187                 ps->vmem_rss    = 0;
 188                 ps->vmem_minflt = 0;
 189                 ps->vmem_majflt = 0;
 190                 ps->cpu_user    = 0;
 191                 ps->cpu_system  = 0;
 192                 ps = ps->next;
 193         }
 194 }
 195
 196 static int ps_config (char *key, char *value)
 197 {
 198         if (strcasecmp (key, "CollectName") == 0)
 199         {
 200                 procstat_t *entry;
 201
 202                 entry = ps_list_append (list_head_g, value);
 203                 if (entry == NULL)
 204                 {
 205                         syslog (LOG_ERR, "processes plugin: ps_list_append failed.");
 206                         return (1);
 207                 }
 208                 if (list_head_g == NULL)
 209                         list_head_g = entry;
 210         }
 211         else
 212         {
 213                 return (-1);
 214         }
 215
 216         return (0);
 217 }
 218
 219 static void ps_init (void)
 220 {
 221 #if HAVE_THREAD_INFO
 222         kern_return_t status;
 223
 224         port_host_self = mach_host_self ();
 225         port_task_self = mach_task_self ();
 226
 227         if (pset_list != NULL)
 228         {
 229                 vm_deallocate (port_task_self,
 230                                 (vm_address_t) pset_list,
 231                                 pset_list_len * sizeof (processor_set_t));
 232                 pset_list = NULL;
 233                 pset_list_len = 0;
 234         }
 235
 236         if ((status = host_processor_sets (port_host_self,
 237                                         &pset_list,
 238                                         &pset_list_len)) != KERN_SUCCESS)
 239         {
 240                 syslog (LOG_ERR, "host_processor_sets failed: %s\n",
 241                                 mach_error_string (status));
 242                 pset_list = NULL;
 243                 pset_list_len = 0;
 244                 return;
 245         }
 246 /* #endif HAVE_THREAD_INFO */
 247
 248 #elif KERNEL_LINUX
 249         pagesize_g = sysconf(_SC_PAGESIZE);
 250 #endif /* KERNEL_LINUX */
 251
 252         return;
 253 }
 254
 255 static void ps_write (char *host, char *inst, char *val)
 256 {
 257         rrd_update_file (host, processes_file, val,
 258                         processes_ds_def, processes_ds_num);
 259 }
 260
 261 #if PROCESSES_HAVE_READ
 262 static void ps_submit (int running,
 263                 int sleeping,
 264                 int zombies,
 265                 int stopped,
 266                 int paging,
 267                 int blocked)
 268 {
 269         char buf[BUFSIZE];
 270
 271         if (snprintf (buf, BUFSIZE, "%u:%i:%i:%i:%i:%i:%i",
 272                                 (unsigned int) curtime,
 273                                 running, sleeping, zombies, stopped, paging,
 274                                 blocked) >= BUFSIZE)
 275                 return;
 276
 277         DBG ("running = %i; sleeping = %i; zombies = %i; stopped = %i; paging = %i; blocked = %i;",
 278                         running, sleeping, zombies, stopped, paging, blocked);
 279
 280         plugin_submit (MODULE_NAME, "-", buf);
 281 }
 282
 283 static void ps_submit_proc (procstat_t *ps)
 284 {
 285         if (ps == NULL)
 286                 return;
 287
 288         DBG ("name = %s; num_proc = %i; num_lwp = %i; vmem_rss = %i; "
 289                         "vmem_minflt = %i; vmem_majflt = %i; "
 290                         "cpu_user = %i; cpu_system = %i;",
 291                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 292                         ps->vmem_minflt, ps->vmem_majflt, ps->cpu_user,
 293                         ps->cpu_system);
 294 }
 295
 296 #if KERNEL_LINUX
 297 static int *ps_read_tasks (int pid)
 298 {
 299         int *list = NULL;
 300         int  list_size = 1; /* size of allocated space, in elements */
 301         int  list_len = 0;  /* number of currently used elements */
 302
 303         char           dirname[64];
 304         DIR           *dh;
 305         struct dirent *ent;
 306
 307         snprintf (dirname, 64, "/proc/%i/task", pid);
 308         dirname[63] = '\0';
 309
 310         if ((dh = opendir (dirname)) == NULL)
 311         {
 312                 syslog (LOG_NOTICE, "processes plugin: Failed to open directory `%s'",
 313                                 dirname);
 314                 return (NULL);
 315         }
 316
 317         while ((ent = readdir (dh)) != NULL)
 318         {
 319                 if (!isdigit (ent->d_name[0]))
 320                         continue;
 321
 322                 if ((list_len + 1) >= list_size)
 323                 {
 324                         int *new_ptr;
 325                         int  new_size = 2 * list_size;
 326                         /* Comes in sizes: 2, 4, 8, 16, ... */
 327
 328                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 329                         if (new_ptr == NULL)
 330                         {
 331                                 if (list != NULL)
 332                                         free (list);
 333                                 syslog (LOG_ERR, "processes plugin: "
 334                                                 "Failed to allocate more memory.");
 335                                 return (NULL);
 336                         }
 337
 338                         list = new_ptr;
 339                         list_size = new_size;
 340
 341                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 342                 }
 343
 344                 list[list_len] = atoi (ent->d_name);
 345                 if (list[list_len] != 0)
 346                         list_len++;
 347         }
 348
 349         closedir (dh);
 350
 351         assert (list_len < list_size);
 352         assert (list[list_len] == 0);
 353
 354         return (list);
 355 }
 356
 357 int ps_read_process (int pid, procstat_t *ps, char *state)
 358 {
 359         char  filename[64];
 360         char  buffer[1024];
 361         FILE *fh;
 362
 363         char *fields[64];
 364         char  fields_len;
 365
 366         int  *tasks;
 367         int   i;
 368
 369         int   ppid;
 370         int   name_len;
 371
 372         memset (ps, 0, sizeof (procstat_t));
 373
 374         snprintf (filename, 64, "/proc/%i/stat", pid);
 375         filename[63] = '\0';
 376
 377         if ((fh = fopen (filename, "r")) == NULL)
 378                 return (-1);
 379
 380         if (fgets (buffer, 1024, fh) == NULL)
 381         {
 382                 fclose (fh);
 383                 return (-1);
 384         }
 385
 386         fclose (fh);
 387
 388         fields_len = strsplit (buffer, fields, 64);
 389         if (fields_len < 24)
 390         {
 391                 DBG ("`%s' has only %i fields..",
 392                                 filename, fields_len);
 393                 return (-1);
 394         }
 395         else if (fields_len != 41)
 396         {
 397                 DBG ("WARNING: (fields_len = %i) != 41", fields_len);
 398         }
 399
 400         /* copy the name, strip brackets in the process */
 401         name_len = strlen (fields[1]) - 2;
 402         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 403         {
 404                 DBG ("No brackets found in process name: `%s'", fields[1]);
 405                 return (-1);
 406         }
 407         fields[1] = fields[1] + 1;
 408         fields[1][name_len] = '\0';
 409         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 410
 411         ppid = atoi (fields[3]);
 412
 413         if ((tasks = ps_read_tasks (pid)) == NULL)
 414         {
 415                 DBG ("ps_read_tasks (%i) failed.", pid);
 416                 return (-1);
 417         }
 418
 419         *state = '\0';
 420         ps->num_lwp  = 0;
 421         ps->num_proc = 1;
 422         for (i = 0; tasks[i] != 0; i++)
 423                 ps->num_lwp++;
 424
 425         free (tasks);
 426         tasks = NULL;
 427
 428         /* Leave the rest at zero if this is only an LWP */
 429         if (ps->num_proc == 0)
 430         {
 431                 DBG ("This is only an LWP: pid = %i; name = %s;",
 432                                 pid, ps->name);
 433                 return (0);
 434         }
 435
 436         ps->vmem_minflt = atol  (fields[9]);
 437         ps->vmem_majflt = atol  (fields[11]);
 438         ps->cpu_user    = atoll (fields[13]);
 439         ps->cpu_system  = atoll (fields[14]);
 440         ps->vmem_rss    = atol  (fields[23]);
 441
 442         /* Convert jiffies to useconds */
 443         ps->cpu_user   = ps->cpu_user   * 1000000 / CONFIG_HZ;
 444         ps->cpu_system = ps->cpu_system * 1000000 / CONFIG_HZ;
 445         ps->vmem_rss   = ps->vmem_rss * pagesize_g;
 446
 447         *state = fields[2][0];
 448
 449         /* success */
 450         return (0);
 451 } /* int ps_read_process (...) */
 452 #endif /* KERNEL_LINUX */
 453
 454 static void ps_read (void)
 455 {
 456 #if HAVE_THREAD_INFO
 457         kern_return_t            status;
 458
 459         int                      pset;
 460         processor_set_t          port_pset_priv;
 461
 462         int                      task;
 463         task_array_t             task_list;
 464         mach_msg_type_number_t   task_list_len;
 465
 466         int                      thread;
 467         thread_act_array_t       thread_list;
 468         mach_msg_type_number_t   thread_list_len;
 469         thread_basic_info_data_t thread_data;
 470         mach_msg_type_number_t   thread_data_len;
 471
 472         int running  = 0;
 473         int sleeping = 0;
 474         int zombies  = 0;
 475         int stopped  = 0;
 476         int blocked  = 0;
 477
 478         /*
 479          * The Mach-concept is a little different from the traditional UNIX
 480          * concept: All the work is done in threads. Threads are contained in
 481          * `tasks'. Therefore, `task status' doesn't make much sense, since
 482          * it's actually a `thread status'.
 483          * Tasks are assigned to sets of processors, so that's where you go to
 484          * get a list.
 485          */
 486         for (pset = 0; pset < pset_list_len; pset++)
 487         {
 488                 if ((status = host_processor_set_priv (port_host_self,
 489                                                 pset_list[pset],
 490                                                 &port_pset_priv)) != KERN_SUCCESS)
 491                 {
 492                         syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
 493                                         mach_error_string (status));
 494                         continue;
 495                 }
 496
 497                 if ((status = processor_set_tasks (port_pset_priv,
 498                                                 &task_list,
 499                                                 &task_list_len)) != KERN_SUCCESS)
 500                 {
 501                         syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
 502                                         mach_error_string (status));
 503                         mach_port_deallocate (port_task_self, port_pset_priv);
 504                         continue;
 505                 }
 506
 507                 for (task = 0; task < task_list_len; task++)
 508                 {
 509                         status = task_threads (task_list[task], &thread_list,
 510                                         &thread_list_len);
 511                         if (status != KERN_SUCCESS)
 512                         {
 513                                 /* Apple's `top' treats this case a zombie. It
 514                                  * makes sense to some extend: A `zombie'
 515                                  * thread is nonsense, since the task/process
 516                                  * is dead. */
 517                                 zombies++;
 518                                 DBG ("task_threads failed: %s",
 519                                                 mach_error_string (status));
 520                                 if (task_list[task] != port_task_self)
 521                                         mach_port_deallocate (port_task_self,
 522                                                         task_list[task]);
 523                                 continue; /* with next task_list */
 524                         }
 525
 526                         for (thread = 0; thread < thread_list_len; thread++)
 527                         {
 528                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 529                                 status = thread_info (thread_list[thread],
 530                                                 THREAD_BASIC_INFO,
 531                                                 (thread_info_t) &thread_data,
 532                                                 &thread_data_len);
 533                                 if (status != KERN_SUCCESS)
 534                                 {
 535                                         syslog (LOG_ERR, "thread_info failed: %s\n",
 536                                                         mach_error_string (status));
 537                                         if (task_list[task] != port_task_self)
 538                                                 mach_port_deallocate (port_task_self,
 539                                                                 thread_list[thread]);
 540                                         continue; /* with next thread_list */
 541                                 }
 542
 543                                 switch (thread_data.run_state)
 544                                 {
 545                                         case TH_STATE_RUNNING:
 546                                                 running++;
 547                                                 break;
 548                                         case TH_STATE_STOPPED:
 549                                         /* What exactly is `halted'? */
 550                                         case TH_STATE_HALTED:
 551                                                 stopped++;
 552                                                 break;
 553                                         case TH_STATE_WAITING:
 554                                                 sleeping++;
 555                                                 break;
 556                                         case TH_STATE_UNINTERRUPTIBLE:
 557                                                 blocked++;
 558                                                 break;
 559                                         /* There is no `zombie' case here,
 560                                          * since there are no zombie-threads.
 561                                          * There's only zombie tasks, which are
 562                                          * handled above. */
 563                                         default:
 564                                                 syslog (LOG_WARNING,
 565                                                                 "Unknown thread status: %s",
 566                                                                 thread_data.run_state);
 567                                                 break;
 568                                 } /* switch (thread_data.run_state) */
 569
 570                                 if (task_list[task] != port_task_self)
 571                                 {
 572                                         status = mach_port_deallocate (port_task_self,
 573                                                         thread_list[thread]);
 574                                         if (status != KERN_SUCCESS)
 575                                                 syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 576                                                                 mach_error_string (status));
 577                                 }
 578                         } /* for (thread_list) */
 579
 580                         if ((status = vm_deallocate (port_task_self,
 581                                                         (vm_address_t) thread_list,
 582                                                         thread_list_len * sizeof (thread_act_t)))
 583                                         != KERN_SUCCESS)
 584                         {
 585                                 syslog (LOG_ERR, "vm_deallocate failed: %s",
 586                                                 mach_error_string (status));
 587                         }
 588                         thread_list = NULL;
 589                         thread_list_len = 0;
 590
 591                         /* Only deallocate the task port, if it isn't our own.
 592                          * Don't know what would happen in that case, but this
 593                          * is what Apple's top does.. ;) */
 594                         if (task_list[task] != port_task_self)
 595                         {
 596                                 status = mach_port_deallocate (port_task_self,
 597                                                 task_list[task]);
 598                                 if (status != KERN_SUCCESS)
 599                                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 600                                                         mach_error_string (status));
 601                         }
 602                 } /* for (task_list) */
 603
 604                 if ((status = vm_deallocate (port_task_self,
 605                                 (vm_address_t) task_list,
 606                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 607                 {
 608                         syslog (LOG_ERR, "vm_deallocate failed: %s",
 609                                         mach_error_string (status));
 610                 }
 611                 task_list = NULL;
 612                 task_list_len = 0;
 613
 614                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 615                                 != KERN_SUCCESS)
 616                 {
 617                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 618                                         mach_error_string (status));
 619                 }
 620         } /* for (pset_list) */
 621
 622         ps_submit (running, sleeping, zombies, stopped, -1, blocked);
 623 /* #endif HAVE_THREAD_INFO */
 624
 625 #elif KERNEL_LINUX
 626         int running  = 0;
 627         int sleeping = 0;
 628         int zombies  = 0;
 629         int stopped  = 0;
 630         int paging   = 0;
 631         int blocked  = 0;
 632
 633         struct dirent *ent;
 634         DIR           *proc;
 635         int            pid;
 636
 637         int        status;
 638         procstat_t ps;
 639         char       state;
 640
 641         procstat_t *ps_ptr;
 642
 643         running = sleeping = zombies = stopped = paging = blocked = 0;
 644         ps_list_reset (list_head_g);
 645
 646         if ((proc = opendir ("/proc")) == NULL)
 647         {
 648                 syslog (LOG_ERR, "Cannot open `/proc': %s", strerror (errno));
 649                 return;
 650         }
 651
 652         while ((ent = readdir (proc)) != NULL)
 653         {
 654                 if (!isdigit (ent->d_name[0]))
 655                         continue;
 656
 657                 if ((pid = atoi (ent->d_name)) < 1)
 658                         continue;
 659
 660                 status = ps_read_process (pid, &ps, &state);
 661                 if (status != 0)
 662                 {
 663                         DBG ("ps_read_process failed: %i", status);
 664                         continue;
 665                 }
 666
 667                 switch (state)
 668                 {
 669                         case 'R': running++;  break;
 670                         case 'S': sleeping++; break;
 671                         case 'D': blocked++;  break;
 672                         case 'Z': zombies++;  break;
 673                         case 'T': stopped++;  break;
 674                         case 'W': paging++;   break;
 675                 }
 676
 677                 if (list_head_g != NULL)
 678                         ps_list_add (list_head_g, &ps);
 679         }
 680
 681         closedir (proc);
 682
 683         ps_submit (running, sleeping, zombies, stopped, paging, blocked);
 684
 685         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
 686                 ps_submit_proc (ps_ptr);
 687 #endif /* KERNEL_LINUX */
 688 }
 689 #else
 690 # define ps_read NULL
 691 #endif /* PROCESSES_HAVE_READ */
 692
 693 void module_register (void)
 694 {
 695         plugin_register (MODULE_NAME, ps_init, ps_read, ps_write);
 696         cf_register (MODULE_NAME, ps_config, config_keys, config_keys_num);
 697 }
 698
 699 #undef BUFSIZE
 700 #undef MODULE_NAME