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TOMOYO Linux Cross Reference
Linux/fs/orangefs/super.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 /*
  3  * (C) 2001 Clemson University and The University of Chicago
  4  *
  5  * See COPYING in top-level directory.
  6  */
  7 
  8 #include "protocol.h"
  9 #include "orangefs-kernel.h"
 10 #include "orangefs-bufmap.h"
 11 
 12 #include <linux/parser.h>
 13 
 14 /* a cache for orangefs-inode objects (i.e. orangefs inode private data) */
 15 static struct kmem_cache *orangefs_inode_cache;
 16 
 17 /* list for storing orangefs specific superblocks in use */
 18 LIST_HEAD(orangefs_superblocks);
 19 
 20 DEFINE_SPINLOCK(orangefs_superblocks_lock);
 21 
 22 enum {
 23         Opt_intr,
 24         Opt_acl,
 25         Opt_local_lock,
 26 
 27         Opt_err
 28 };
 29 
 30 static const match_table_t tokens = {
 31         { Opt_acl,              "acl" },
 32         { Opt_intr,             "intr" },
 33         { Opt_local_lock,       "local_lock" },
 34         { Opt_err,      NULL }
 35 };
 36 
 37 uint64_t orangefs_features;
 38 
 39 static int orangefs_show_options(struct seq_file *m, struct dentry *root)
 40 {
 41         struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb);
 42 
 43         if (root->d_sb->s_flags & SB_POSIXACL)
 44                 seq_puts(m, ",acl");
 45         if (orangefs_sb->flags & ORANGEFS_OPT_INTR)
 46                 seq_puts(m, ",intr");
 47         if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK)
 48                 seq_puts(m, ",local_lock");
 49         return 0;
 50 }
 51 
 52 static int parse_mount_options(struct super_block *sb, char *options,
 53                 int silent)
 54 {
 55         struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb);
 56         substring_t args[MAX_OPT_ARGS];
 57         char *p;
 58 
 59         /*
 60          * Force any potential flags that might be set from the mount
 61          * to zero, ie, initialize to unset.
 62          */
 63         sb->s_flags &= ~SB_POSIXACL;
 64         orangefs_sb->flags &= ~ORANGEFS_OPT_INTR;
 65         orangefs_sb->flags &= ~ORANGEFS_OPT_LOCAL_LOCK;
 66 
 67         while ((p = strsep(&options, ",")) != NULL) {
 68                 int token;
 69 
 70                 if (!*p)
 71                         continue;
 72 
 73                 token = match_token(p, tokens, args);
 74                 switch (token) {
 75                 case Opt_acl:
 76                         sb->s_flags |= SB_POSIXACL;
 77                         break;
 78                 case Opt_intr:
 79                         orangefs_sb->flags |= ORANGEFS_OPT_INTR;
 80                         break;
 81                 case Opt_local_lock:
 82                         orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK;
 83                         break;
 84                 default:
 85                         goto fail;
 86                 }
 87         }
 88 
 89         return 0;
 90 fail:
 91         if (!silent)
 92                 gossip_err("Error: mount option [%s] is not supported.\n", p);
 93         return -EINVAL;
 94 }
 95 
 96 static void orangefs_inode_cache_ctor(void *req)
 97 {
 98         struct orangefs_inode_s *orangefs_inode = req;
 99 
100         inode_init_once(&orangefs_inode->vfs_inode);
101         init_rwsem(&orangefs_inode->xattr_sem);
102 }
103 
104 static struct inode *orangefs_alloc_inode(struct super_block *sb)
105 {
106         struct orangefs_inode_s *orangefs_inode;
107 
108         orangefs_inode = kmem_cache_alloc(orangefs_inode_cache, GFP_KERNEL);
109         if (!orangefs_inode)
110                 return NULL;
111 
112         /*
113          * We want to clear everything except for rw_semaphore and the
114          * vfs_inode.
115          */
116         memset(&orangefs_inode->refn.khandle, 0, 16);
117         orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL;
118         orangefs_inode->last_failed_block_index_read = 0;
119         memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target));
120 
121         gossip_debug(GOSSIP_SUPER_DEBUG,
122                      "orangefs_alloc_inode: allocated %p\n",
123                      &orangefs_inode->vfs_inode);
124         return &orangefs_inode->vfs_inode;
125 }
126 
127 static void orangefs_i_callback(struct rcu_head *head)
128 {
129         struct inode *inode = container_of(head, struct inode, i_rcu);
130         struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
131         kmem_cache_free(orangefs_inode_cache, orangefs_inode);
132 }
133 
134 static void orangefs_destroy_inode(struct inode *inode)
135 {
136         struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
137 
138         gossip_debug(GOSSIP_SUPER_DEBUG,
139                         "%s: deallocated %p destroying inode %pU\n",
140                         __func__, orangefs_inode, get_khandle_from_ino(inode));
141 
142         call_rcu(&inode->i_rcu, orangefs_i_callback);
143 }
144 
145 /*
146  * NOTE: information filled in here is typically reflected in the
147  * output of the system command 'df'
148 */
149 static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf)
150 {
151         int ret = -ENOMEM;
152         struct orangefs_kernel_op_s *new_op = NULL;
153         int flags = 0;
154         struct super_block *sb = NULL;
155 
156         sb = dentry->d_sb;
157 
158         gossip_debug(GOSSIP_SUPER_DEBUG,
159                         "%s: called on sb %p (fs_id is %d)\n",
160                         __func__,
161                         sb,
162                         (int)(ORANGEFS_SB(sb)->fs_id));
163 
164         new_op = op_alloc(ORANGEFS_VFS_OP_STATFS);
165         if (!new_op)
166                 return ret;
167         new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id;
168 
169         if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR)
170                 flags = ORANGEFS_OP_INTERRUPTIBLE;
171 
172         ret = service_operation(new_op, "orangefs_statfs", flags);
173 
174         if (new_op->downcall.status < 0)
175                 goto out_op_release;
176 
177         gossip_debug(GOSSIP_SUPER_DEBUG,
178                      "%s: got %ld blocks available | "
179                      "%ld blocks total | %ld block size | "
180                      "%ld files total | %ld files avail\n",
181                      __func__,
182                      (long)new_op->downcall.resp.statfs.blocks_avail,
183                      (long)new_op->downcall.resp.statfs.blocks_total,
184                      (long)new_op->downcall.resp.statfs.block_size,
185                      (long)new_op->downcall.resp.statfs.files_total,
186                      (long)new_op->downcall.resp.statfs.files_avail);
187 
188         buf->f_type = sb->s_magic;
189         memcpy(&buf->f_fsid, &ORANGEFS_SB(sb)->fs_id, sizeof(buf->f_fsid));
190         buf->f_bsize = new_op->downcall.resp.statfs.block_size;
191         buf->f_namelen = ORANGEFS_NAME_MAX;
192 
193         buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total;
194         buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
195         buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail;
196         buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total;
197         buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail;
198         buf->f_frsize = sb->s_blocksize;
199 
200 out_op_release:
201         op_release(new_op);
202         gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret);
203         return ret;
204 }
205 
206 /*
207  * Remount as initiated by VFS layer.  We just need to reparse the mount
208  * options, no need to signal pvfs2-client-core about it.
209  */
210 static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data)
211 {
212         gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n");
213         return parse_mount_options(sb, data, 1);
214 }
215 
216 /*
217  * Remount as initiated by pvfs2-client-core on restart.  This is used to
218  * repopulate mount information left from previous pvfs2-client-core.
219  *
220  * the idea here is that given a valid superblock, we're
221  * re-initializing the user space client with the initial mount
222  * information specified when the super block was first initialized.
223  * this is very different than the first initialization/creation of a
224  * superblock.  we use the special service_priority_operation to make
225  * sure that the mount gets ahead of any other pending operation that
226  * is waiting for servicing.  this means that the pvfs2-client won't
227  * fail to start several times for all other pending operations before
228  * the client regains all of the mount information from us.
229  * NOTE: this function assumes that the request_mutex is already acquired!
230  */
231 int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb)
232 {
233         struct orangefs_kernel_op_s *new_op;
234         int ret = -EINVAL;
235 
236         gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n");
237 
238         new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
239         if (!new_op)
240                 return -ENOMEM;
241         strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
242                 orangefs_sb->devname,
243                 ORANGEFS_MAX_SERVER_ADDR_LEN);
244 
245         gossip_debug(GOSSIP_SUPER_DEBUG,
246                      "Attempting ORANGEFS Remount via host %s\n",
247                      new_op->upcall.req.fs_mount.orangefs_config_server);
248 
249         /*
250          * we assume that the calling function has already acquired the
251          * request_mutex to prevent other operations from bypassing
252          * this one
253          */
254         ret = service_operation(new_op, "orangefs_remount",
255                 ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
256         gossip_debug(GOSSIP_SUPER_DEBUG,
257                      "orangefs_remount: mount got return value of %d\n",
258                      ret);
259         if (ret == 0) {
260                 /*
261                  * store the id assigned to this sb -- it's just a
262                  * short-lived mapping that the system interface uses
263                  * to map this superblock to a particular mount entry
264                  */
265                 orangefs_sb->id = new_op->downcall.resp.fs_mount.id;
266                 orangefs_sb->mount_pending = 0;
267         }
268 
269         op_release(new_op);
270 
271         if (orangefs_userspace_version >= 20906) {
272                 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
273                 if (!new_op)
274                         return -ENOMEM;
275                 new_op->upcall.req.features.features = 0;
276                 ret = service_operation(new_op, "orangefs_features",
277                     ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX);
278                 if (!ret)
279                         orangefs_features =
280                             new_op->downcall.resp.features.features;
281                 else
282                         orangefs_features = 0;
283                 op_release(new_op);
284         } else {
285                 orangefs_features = 0;
286         }
287 
288         return ret;
289 }
290 
291 int fsid_key_table_initialize(void)
292 {
293         return 0;
294 }
295 
296 void fsid_key_table_finalize(void)
297 {
298 }
299 
300 static const struct super_operations orangefs_s_ops = {
301         .alloc_inode = orangefs_alloc_inode,
302         .destroy_inode = orangefs_destroy_inode,
303         .drop_inode = generic_delete_inode,
304         .statfs = orangefs_statfs,
305         .remount_fs = orangefs_remount_fs,
306         .show_options = orangefs_show_options,
307 };
308 
309 static struct dentry *orangefs_fh_to_dentry(struct super_block *sb,
310                                   struct fid *fid,
311                                   int fh_len,
312                                   int fh_type)
313 {
314         struct orangefs_object_kref refn;
315 
316         if (fh_len < 5 || fh_type > 2)
317                 return NULL;
318 
319         ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16);
320         refn.fs_id = (u32) fid->raw[4];
321         gossip_debug(GOSSIP_SUPER_DEBUG,
322                      "fh_to_dentry: handle %pU, fs_id %d\n",
323                      &refn.khandle,
324                      refn.fs_id);
325 
326         return d_obtain_alias(orangefs_iget(sb, &refn));
327 }
328 
329 static int orangefs_encode_fh(struct inode *inode,
330                     __u32 *fh,
331                     int *max_len,
332                     struct inode *parent)
333 {
334         int len = parent ? 10 : 5;
335         int type = 1;
336         struct orangefs_object_kref refn;
337 
338         if (*max_len < len) {
339                 gossip_err("fh buffer is too small for encoding\n");
340                 *max_len = len;
341                 type = 255;
342                 goto out;
343         }
344 
345         refn = ORANGEFS_I(inode)->refn;
346         ORANGEFS_khandle_to(&refn.khandle, fh, 16);
347         fh[4] = refn.fs_id;
348 
349         gossip_debug(GOSSIP_SUPER_DEBUG,
350                      "Encoding fh: handle %pU, fsid %u\n",
351                      &refn.khandle,
352                      refn.fs_id);
353 
354 
355         if (parent) {
356                 refn = ORANGEFS_I(parent)->refn;
357                 ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16);
358                 fh[9] = refn.fs_id;
359 
360                 type = 2;
361                 gossip_debug(GOSSIP_SUPER_DEBUG,
362                              "Encoding parent: handle %pU, fsid %u\n",
363                              &refn.khandle,
364                              refn.fs_id);
365         }
366         *max_len = len;
367 
368 out:
369         return type;
370 }
371 
372 static const struct export_operations orangefs_export_ops = {
373         .encode_fh = orangefs_encode_fh,
374         .fh_to_dentry = orangefs_fh_to_dentry,
375 };
376 
377 static int orangefs_unmount(int id, __s32 fs_id, const char *devname)
378 {
379         struct orangefs_kernel_op_s *op;
380         int r;
381         op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT);
382         if (!op)
383                 return -ENOMEM;
384         op->upcall.req.fs_umount.id = id;
385         op->upcall.req.fs_umount.fs_id = fs_id;
386         strncpy(op->upcall.req.fs_umount.orangefs_config_server,
387             devname, ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
388         r = service_operation(op, "orangefs_fs_umount", 0);
389         /* Not much to do about an error here. */
390         if (r)
391                 gossip_err("orangefs_unmount: service_operation %d\n", r);
392         op_release(op);
393         return r;
394 }
395 
396 static int orangefs_fill_sb(struct super_block *sb,
397                 struct orangefs_fs_mount_response *fs_mount,
398                 void *data, int silent)
399 {
400         int ret = -EINVAL;
401         struct inode *root = NULL;
402         struct dentry *root_dentry = NULL;
403         struct orangefs_object_kref root_object;
404 
405         /* alloc and init our private orangefs sb info */
406         sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL);
407         if (!ORANGEFS_SB(sb))
408                 return -ENOMEM;
409         ORANGEFS_SB(sb)->sb = sb;
410 
411         ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle;
412         ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id;
413         ORANGEFS_SB(sb)->id = fs_mount->id;
414 
415         if (data) {
416                 ret = parse_mount_options(sb, data, silent);
417                 if (ret)
418                         return ret;
419         }
420 
421         /* Hang the xattr handlers off the superblock */
422         sb->s_xattr = orangefs_xattr_handlers;
423         sb->s_magic = ORANGEFS_SUPER_MAGIC;
424         sb->s_op = &orangefs_s_ops;
425         sb->s_d_op = &orangefs_dentry_operations;
426 
427         sb->s_blocksize = PAGE_SIZE;
428         sb->s_blocksize_bits = PAGE_SHIFT;
429         sb->s_maxbytes = MAX_LFS_FILESIZE;
430 
431         root_object.khandle = ORANGEFS_SB(sb)->root_khandle;
432         root_object.fs_id = ORANGEFS_SB(sb)->fs_id;
433         gossip_debug(GOSSIP_SUPER_DEBUG,
434                      "get inode %pU, fsid %d\n",
435                      &root_object.khandle,
436                      root_object.fs_id);
437 
438         root = orangefs_iget(sb, &root_object);
439         if (IS_ERR(root))
440                 return PTR_ERR(root);
441 
442         gossip_debug(GOSSIP_SUPER_DEBUG,
443                      "Allocated root inode [%p] with mode %x\n",
444                      root,
445                      root->i_mode);
446 
447         /* allocates and places root dentry in dcache */
448         root_dentry = d_make_root(root);
449         if (!root_dentry)
450                 return -ENOMEM;
451 
452         sb->s_export_op = &orangefs_export_ops;
453         sb->s_root = root_dentry;
454         return 0;
455 }
456 
457 struct dentry *orangefs_mount(struct file_system_type *fst,
458                            int flags,
459                            const char *devname,
460                            void *data)
461 {
462         int ret = -EINVAL;
463         struct super_block *sb = ERR_PTR(-EINVAL);
464         struct orangefs_kernel_op_s *new_op;
465         struct dentry *d = ERR_PTR(-EINVAL);
466 
467         gossip_debug(GOSSIP_SUPER_DEBUG,
468                      "orangefs_mount: called with devname %s\n",
469                      devname);
470 
471         if (!devname) {
472                 gossip_err("ERROR: device name not specified.\n");
473                 return ERR_PTR(-EINVAL);
474         }
475 
476         new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT);
477         if (!new_op)
478                 return ERR_PTR(-ENOMEM);
479 
480         strncpy(new_op->upcall.req.fs_mount.orangefs_config_server,
481                 devname,
482                 ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
483 
484         gossip_debug(GOSSIP_SUPER_DEBUG,
485                      "Attempting ORANGEFS Mount via host %s\n",
486                      new_op->upcall.req.fs_mount.orangefs_config_server);
487 
488         ret = service_operation(new_op, "orangefs_mount", 0);
489         gossip_debug(GOSSIP_SUPER_DEBUG,
490                      "orangefs_mount: mount got return value of %d\n", ret);
491         if (ret)
492                 goto free_op;
493 
494         if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) {
495                 gossip_err("ERROR: Retrieved null fs_id\n");
496                 ret = -EINVAL;
497                 goto free_op;
498         }
499 
500         sb = sget(fst, NULL, set_anon_super, flags, NULL);
501 
502         if (IS_ERR(sb)) {
503                 d = ERR_CAST(sb);
504                 orangefs_unmount(new_op->downcall.resp.fs_mount.id,
505                     new_op->downcall.resp.fs_mount.fs_id, devname);
506                 goto free_op;
507         }
508 
509         ret = orangefs_fill_sb(sb,
510               &new_op->downcall.resp.fs_mount, data,
511               flags & SB_SILENT ? 1 : 0);
512 
513         if (ret) {
514                 d = ERR_PTR(ret);
515                 goto free_sb_and_op;
516         }
517 
518         /*
519          * on successful mount, store the devname and data
520          * used
521          */
522         strncpy(ORANGEFS_SB(sb)->devname,
523                 devname,
524                 ORANGEFS_MAX_SERVER_ADDR_LEN - 1);
525 
526         /* mount_pending must be cleared */
527         ORANGEFS_SB(sb)->mount_pending = 0;
528 
529         /*
530          * finally, add this sb to our list of known orangefs
531          * sb's
532          */
533         gossip_debug(GOSSIP_SUPER_DEBUG,
534                      "Adding SB %p to orangefs superblocks\n",
535                      ORANGEFS_SB(sb));
536         spin_lock(&orangefs_superblocks_lock);
537         list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks);
538         spin_unlock(&orangefs_superblocks_lock);
539         op_release(new_op);
540 
541         /* Must be removed from the list now. */
542         ORANGEFS_SB(sb)->no_list = 0;
543 
544         if (orangefs_userspace_version >= 20906) {
545                 new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
546                 if (!new_op)
547                         return ERR_PTR(-ENOMEM);
548                 new_op->upcall.req.features.features = 0;
549                 ret = service_operation(new_op, "orangefs_features", 0);
550                 orangefs_features = new_op->downcall.resp.features.features;
551                 op_release(new_op);
552         } else {
553                 orangefs_features = 0;
554         }
555 
556         return dget(sb->s_root);
557 
558 free_sb_and_op:
559         /* Will call orangefs_kill_sb with sb not in list. */
560         ORANGEFS_SB(sb)->no_list = 1;
561         /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */
562         deactivate_locked_super(sb);
563 free_op:
564         gossip_err("orangefs_mount: mount request failed with %d\n", ret);
565         if (ret == -EINVAL) {
566                 gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n");
567                 gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n");
568         }
569 
570         op_release(new_op);
571 
572         return d;
573 }
574 
575 void orangefs_kill_sb(struct super_block *sb)
576 {
577         int r;
578         gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n");
579 
580         /* provided sb cleanup */
581         kill_anon_super(sb);
582 
583         if (!ORANGEFS_SB(sb)) {
584                 mutex_lock(&orangefs_request_mutex);
585                 mutex_unlock(&orangefs_request_mutex);
586                 return;
587         }
588         /*
589          * issue the unmount to userspace to tell it to remove the
590          * dynamic mount info it has for this superblock
591          */
592         r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id,
593             ORANGEFS_SB(sb)->devname);
594         if (!r)
595                 ORANGEFS_SB(sb)->mount_pending = 1;
596 
597         if (!ORANGEFS_SB(sb)->no_list) {
598                 /* remove the sb from our list of orangefs specific sb's */
599                 spin_lock(&orangefs_superblocks_lock);
600                 /* not list_del_init */
601                 __list_del_entry(&ORANGEFS_SB(sb)->list);
602                 ORANGEFS_SB(sb)->list.prev = NULL;
603                 spin_unlock(&orangefs_superblocks_lock);
604         }
605 
606         /*
607          * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us
608          * gets completed before we free the dang thing.
609          */
610         mutex_lock(&orangefs_request_mutex);
611         mutex_unlock(&orangefs_request_mutex);
612 
613         /* free the orangefs superblock private data */
614         kfree(ORANGEFS_SB(sb));
615 }
616 
617 int orangefs_inode_cache_initialize(void)
618 {
619         orangefs_inode_cache = kmem_cache_create_usercopy(
620                                         "orangefs_inode_cache",
621                                         sizeof(struct orangefs_inode_s),
622                                         0,
623                                         ORANGEFS_CACHE_CREATE_FLAGS,
624                                         offsetof(struct orangefs_inode_s,
625                                                 link_target),
626                                         sizeof_field(struct orangefs_inode_s,
627                                                 link_target),
628                                         orangefs_inode_cache_ctor);
629 
630         if (!orangefs_inode_cache) {
631                 gossip_err("Cannot create orangefs_inode_cache\n");
632                 return -ENOMEM;
633         }
634         return 0;
635 }
636 
637 int orangefs_inode_cache_finalize(void)
638 {
639         kmem_cache_destroy(orangefs_inode_cache);
640         return 0;
641 }
642 

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