1
2#ifndef _FS_CEPH_SUPER_H
3#define _FS_CEPH_SUPER_H
4
5#include <linux/ceph/ceph_debug.h>
6
7#include <asm/unaligned.h>
8#include <linux/backing-dev.h>
9#include <linux/completion.h>
10#include <linux/exportfs.h>
11#include <linux/fs.h>
12#include <linux/mempool.h>
13#include <linux/pagemap.h>
14#include <linux/wait.h>
15#include <linux/writeback.h>
16#include <linux/slab.h>
17#include <linux/posix_acl.h>
18#include <linux/refcount.h>
19#include <linux/security.h>
20
21#include <linux/ceph/libceph.h>
22
23#ifdef CONFIG_CEPH_FSCACHE
24#include <linux/fscache.h>
25#endif
26
27
28#define CEPH_SUPER_MAGIC 0x00c36400
29
30
31
32#define CEPH_BLOCK_SHIFT 22
33#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT)
34
35#define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1)
36#define CEPH_MOUNT_OPT_DIRSTAT (1<<4)
37#define CEPH_MOUNT_OPT_RBYTES (1<<5)
38#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7)
39#define CEPH_MOUNT_OPT_INO32 (1<<8)
40#define CEPH_MOUNT_OPT_DCACHE (1<<9)
41#define CEPH_MOUNT_OPT_FSCACHE (1<<10)
42#define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11)
43#define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12)
44#define CEPH_MOUNT_OPT_NOQUOTADF (1<<13)
45#define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14)
46
47#define CEPH_MOUNT_OPT_DEFAULT \
48 (CEPH_MOUNT_OPT_DCACHE | \
49 CEPH_MOUNT_OPT_NOCOPYFROM)
50
51#define ceph_set_mount_opt(fsc, opt) \
52 (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt;
53#define ceph_test_mount_opt(fsc, opt) \
54 (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
55
56
57#define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN
58
59
60#define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN
61#define CEPH_RASIZE_DEFAULT (8192*1024)
62#define CEPH_MAX_READDIR_DEFAULT 1024
63#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
64#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
65
66
67
68
69
70
71
72#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5
73#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60
74
75struct ceph_mount_options {
76 unsigned int flags;
77
78 unsigned int wsize;
79 unsigned int rsize;
80 unsigned int rasize;
81 unsigned int congestion_kb;
82 unsigned int caps_wanted_delay_min, caps_wanted_delay_max;
83 int caps_max;
84 unsigned int max_readdir;
85 unsigned int max_readdir_bytes;
86
87
88
89
90
91
92 char *snapdir_name;
93 char *mds_namespace;
94 char *server_path;
95 char *fscache_uniq;
96};
97
98struct ceph_fs_client {
99 struct super_block *sb;
100
101 struct ceph_mount_options *mount_options;
102 struct ceph_client *client;
103
104 unsigned long mount_state;
105
106 unsigned long last_auto_reconnect;
107 bool blacklisted;
108
109 u32 filp_gen;
110 loff_t max_file_size;
111
112 struct ceph_mds_client *mdsc;
113
114
115 mempool_t *wb_pagevec_pool;
116 atomic_long_t writeback_count;
117
118 struct workqueue_struct *inode_wq;
119 struct workqueue_struct *cap_wq;
120
121#ifdef CONFIG_DEBUG_FS
122 struct dentry *debugfs_dentry_lru, *debugfs_caps;
123 struct dentry *debugfs_congestion_kb;
124 struct dentry *debugfs_bdi;
125 struct dentry *debugfs_mdsc, *debugfs_mdsmap;
126 struct dentry *debugfs_mds_sessions;
127#endif
128
129#ifdef CONFIG_CEPH_FSCACHE
130 struct fscache_cookie *fscache;
131#endif
132};
133
134
135
136
137
138
139
140
141
142
143
144
145struct ceph_cap {
146 struct ceph_inode_info *ci;
147 struct rb_node ci_node;
148 struct ceph_mds_session *session;
149 struct list_head session_caps;
150 u64 cap_id;
151 union {
152
153 struct {
154 int issued;
155 int implemented;
156
157 int mds, mds_wanted;
158 };
159
160 struct {
161 u64 cap_ino;
162 int queue_release;
163 };
164 };
165 u32 seq, issue_seq, mseq;
166 u32 cap_gen;
167 unsigned long last_used;
168 struct list_head caps_item;
169};
170
171#define CHECK_CAPS_NODELAY 1
172#define CHECK_CAPS_AUTHONLY 2
173#define CHECK_CAPS_FLUSH 4
174
175struct ceph_cap_flush {
176 u64 tid;
177 int caps;
178 bool wake;
179 struct list_head g_list;
180 struct list_head i_list;
181};
182
183
184
185
186
187
188struct ceph_cap_snap {
189 refcount_t nref;
190 struct list_head ci_item;
191
192 struct ceph_cap_flush cap_flush;
193
194 u64 follows;
195 int issued, dirty;
196 struct ceph_snap_context *context;
197
198 umode_t mode;
199 kuid_t uid;
200 kgid_t gid;
201
202 struct ceph_buffer *xattr_blob;
203 u64 xattr_version;
204
205 u64 size;
206 u64 change_attr;
207 struct timespec64 mtime, atime, ctime, btime;
208 u64 time_warp_seq;
209 u64 truncate_size;
210 u32 truncate_seq;
211 int writing;
212 int dirty_pages;
213 bool inline_data;
214 bool need_flush;
215};
216
217static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap)
218{
219 if (refcount_dec_and_test(&capsnap->nref)) {
220 if (capsnap->xattr_blob)
221 ceph_buffer_put(capsnap->xattr_blob);
222 kfree(capsnap);
223 }
224}
225
226
227
228
229
230
231
232
233
234#define CEPH_MAX_DIRFRAG_REP 4
235
236struct ceph_inode_frag {
237 struct rb_node node;
238
239
240 u32 frag;
241 int split_by;
242
243
244 int mds;
245 int ndist;
246 int dist[CEPH_MAX_DIRFRAG_REP];
247};
248
249
250
251
252
253struct ceph_inode_xattr {
254 struct rb_node node;
255
256 const char *name;
257 int name_len;
258 const char *val;
259 int val_len;
260 int dirty;
261
262 int should_free_name;
263 int should_free_val;
264};
265
266
267
268
269struct ceph_dentry_info {
270 struct dentry *dentry;
271 struct ceph_mds_session *lease_session;
272 struct list_head lease_list;
273 unsigned flags;
274 int lease_shared_gen;
275 u32 lease_gen;
276 u32 lease_seq;
277 unsigned long lease_renew_after, lease_renew_from;
278 unsigned long time;
279 u64 offset;
280};
281
282#define CEPH_DENTRY_REFERENCED 1
283#define CEPH_DENTRY_LEASE_LIST 2
284#define CEPH_DENTRY_SHRINK_LIST 4
285
286struct ceph_inode_xattrs_info {
287
288
289
290
291
292
293
294 struct ceph_buffer *blob, *prealloc_blob;
295
296 struct rb_root index;
297 bool dirty;
298 int count;
299 int names_size;
300 int vals_size;
301 u64 version, index_version;
302};
303
304
305
306
307struct ceph_inode_info {
308 struct ceph_vino i_vino;
309
310 spinlock_t i_ceph_lock;
311
312 u64 i_version;
313 u64 i_inline_version;
314 u32 i_time_warp_seq;
315
316 unsigned i_ceph_flags;
317 atomic64_t i_release_count;
318 atomic64_t i_ordered_count;
319 atomic64_t i_complete_seq[2];
320
321 struct ceph_dir_layout i_dir_layout;
322 struct ceph_file_layout i_layout;
323 char *i_symlink;
324
325
326 struct timespec64 i_rctime;
327 u64 i_rbytes, i_rfiles, i_rsubdirs;
328 u64 i_files, i_subdirs;
329
330
331 u64 i_max_bytes, i_max_files;
332
333 s32 i_dir_pin;
334
335 struct rb_root i_fragtree;
336 int i_fragtree_nsplits;
337 struct mutex i_fragtree_mutex;
338
339 struct ceph_inode_xattrs_info i_xattrs;
340
341
342
343 struct rb_root i_caps;
344 struct ceph_cap *i_auth_cap;
345 unsigned i_dirty_caps, i_flushing_caps;
346 struct list_head i_dirty_item, i_flushing_item;
347
348
349
350 struct ceph_cap_flush *i_prealloc_cap_flush;
351 struct list_head i_cap_flush_list;
352 wait_queue_head_t i_cap_wq;
353 unsigned long i_hold_caps_min;
354 unsigned long i_hold_caps_max;
355 struct list_head i_cap_delay_list;
356 struct ceph_cap_reservation i_cap_migration_resv;
357 struct list_head i_cap_snaps;
358 struct ceph_snap_context *i_head_snapc;
359
360 unsigned i_snap_caps;
361
362 int i_nr_by_mode[CEPH_FILE_MODE_BITS];
363
364 struct mutex i_truncate_mutex;
365 u32 i_truncate_seq;
366 u64 i_truncate_size;
367 int i_truncate_pending;
368
369 u64 i_max_size;
370 u64 i_reported_size;
371 u64 i_wanted_max_size;
372 u64 i_requested_max_size;
373
374
375 int i_pin_ref;
376 int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref;
377 int i_wrbuffer_ref, i_wrbuffer_ref_head;
378 atomic_t i_filelock_ref;
379 atomic_t i_shared_gen;
380 u32 i_rdcache_gen;
381 u32 i_rdcache_revoking;
382
383 struct list_head i_unsafe_dirops;
384 struct list_head i_unsafe_iops;
385 spinlock_t i_unsafe_lock;
386
387 union {
388 struct ceph_snap_realm *i_snap_realm;
389 struct ceph_snapid_map *i_snapid_map;
390 };
391 int i_snap_realm_counter;
392 struct list_head i_snap_realm_item;
393 struct list_head i_snap_flush_item;
394 struct timespec64 i_btime;
395 struct timespec64 i_snap_btime;
396
397 struct work_struct i_work;
398 unsigned long i_work_mask;
399
400#ifdef CONFIG_CEPH_FSCACHE
401 struct fscache_cookie *fscache;
402 u32 i_fscache_gen;
403#endif
404 errseq_t i_meta_err;
405
406 struct inode vfs_inode;
407};
408
409static inline struct ceph_inode_info *
410ceph_inode(const struct inode *inode)
411{
412 return container_of(inode, struct ceph_inode_info, vfs_inode);
413}
414
415static inline struct ceph_fs_client *
416ceph_inode_to_client(const struct inode *inode)
417{
418 return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
419}
420
421static inline struct ceph_fs_client *
422ceph_sb_to_client(const struct super_block *sb)
423{
424 return (struct ceph_fs_client *)sb->s_fs_info;
425}
426
427static inline struct ceph_vino
428ceph_vino(const struct inode *inode)
429{
430 return ceph_inode(inode)->i_vino;
431}
432
433
434
435
436
437
438
439
440
441static inline u32 ceph_ino_to_ino32(__u64 vino)
442{
443 u32 ino = vino & 0xffffffff;
444 ino ^= vino >> 32;
445 if (!ino)
446 ino = 2;
447 return ino;
448}
449
450
451
452
453static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
454{
455#if BITS_PER_LONG == 32
456 return ceph_ino_to_ino32(vino.ino);
457#else
458 return (ino_t)vino.ino;
459#endif
460}
461
462
463
464
465#if BITS_PER_LONG == 32
466static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
467{
468 return ino;
469}
470#else
471static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
472{
473 if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
474 ino = ceph_ino_to_ino32(ino);
475 return ino;
476}
477#endif
478
479
480
481#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
482
483static inline u64 ceph_ino(struct inode *inode)
484{
485 return ceph_inode(inode)->i_vino.ino;
486}
487static inline u64 ceph_snap(struct inode *inode)
488{
489 return ceph_inode(inode)->i_vino.snap;
490}
491
492static inline int ceph_ino_compare(struct inode *inode, void *data)
493{
494 struct ceph_vino *pvino = (struct ceph_vino *)data;
495 struct ceph_inode_info *ci = ceph_inode(inode);
496 return ci->i_vino.ino == pvino->ino &&
497 ci->i_vino.snap == pvino->snap;
498}
499
500static inline struct inode *ceph_find_inode(struct super_block *sb,
501 struct ceph_vino vino)
502{
503 ino_t t = ceph_vino_to_ino(vino);
504 return ilookup5(sb, t, ceph_ino_compare, &vino);
505}
506
507
508
509
510
511#define CEPH_I_DIR_ORDERED (1 << 0)
512#define CEPH_I_NODELAY (1 << 1)
513#define CEPH_I_FLUSH (1 << 2)
514#define CEPH_I_POOL_PERM (1 << 3)
515#define CEPH_I_POOL_RD (1 << 4)
516#define CEPH_I_POOL_WR (1 << 5)
517#define CEPH_I_SEC_INITED (1 << 6)
518#define CEPH_I_CAP_DROPPED (1 << 7)
519#define CEPH_I_KICK_FLUSH (1 << 8)
520#define CEPH_I_FLUSH_SNAPS (1 << 9)
521#define CEPH_I_ERROR_WRITE (1 << 10)
522#define CEPH_I_ERROR_FILELOCK (1 << 11)
523#define CEPH_I_ODIRECT (1 << 12)
524
525
526
527
528#define CEPH_I_WORK_WRITEBACK 0
529#define CEPH_I_WORK_INVALIDATE_PAGES 1
530#define CEPH_I_WORK_VMTRUNCATE 2
531
532
533
534
535
536
537
538
539static inline void ceph_set_error_write(struct ceph_inode_info *ci)
540{
541 if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) {
542 spin_lock(&ci->i_ceph_lock);
543 ci->i_ceph_flags |= CEPH_I_ERROR_WRITE;
544 spin_unlock(&ci->i_ceph_lock);
545 }
546}
547
548static inline void ceph_clear_error_write(struct ceph_inode_info *ci)
549{
550 if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) {
551 spin_lock(&ci->i_ceph_lock);
552 ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE;
553 spin_unlock(&ci->i_ceph_lock);
554 }
555}
556
557static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci,
558 long long release_count,
559 long long ordered_count)
560{
561
562
563
564
565
566 smp_mb();
567 atomic64_set(&ci->i_complete_seq[0], release_count);
568 atomic64_set(&ci->i_complete_seq[1], ordered_count);
569}
570
571static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci)
572{
573 atomic64_inc(&ci->i_release_count);
574}
575
576static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci)
577{
578 atomic64_inc(&ci->i_ordered_count);
579}
580
581static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci)
582{
583 return atomic64_read(&ci->i_complete_seq[0]) ==
584 atomic64_read(&ci->i_release_count);
585}
586
587static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci)
588{
589 return atomic64_read(&ci->i_complete_seq[0]) ==
590 atomic64_read(&ci->i_release_count) &&
591 atomic64_read(&ci->i_complete_seq[1]) ==
592 atomic64_read(&ci->i_ordered_count);
593}
594
595static inline void ceph_dir_clear_complete(struct inode *inode)
596{
597 __ceph_dir_clear_complete(ceph_inode(inode));
598}
599
600static inline void ceph_dir_clear_ordered(struct inode *inode)
601{
602 __ceph_dir_clear_ordered(ceph_inode(inode));
603}
604
605static inline bool ceph_dir_is_complete_ordered(struct inode *inode)
606{
607 bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode));
608 smp_rmb();
609 return ret;
610}
611
612
613extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci,
614 u32 f);
615
616
617
618
619
620extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v,
621 struct ceph_inode_frag *pfrag,
622 int *found);
623
624static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry)
625{
626 return (struct ceph_dentry_info *)dentry->d_fsdata;
627}
628
629
630
631
632static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci)
633{
634 return !RB_EMPTY_ROOT(&ci->i_caps);
635}
636
637extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented);
638extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t);
639extern int __ceph_caps_issued_other(struct ceph_inode_info *ci,
640 struct ceph_cap *cap);
641
642static inline int ceph_caps_issued(struct ceph_inode_info *ci)
643{
644 int issued;
645 spin_lock(&ci->i_ceph_lock);
646 issued = __ceph_caps_issued(ci, NULL);
647 spin_unlock(&ci->i_ceph_lock);
648 return issued;
649}
650
651static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask,
652 int touch)
653{
654 int r;
655 spin_lock(&ci->i_ceph_lock);
656 r = __ceph_caps_issued_mask(ci, mask, touch);
657 spin_unlock(&ci->i_ceph_lock);
658 return r;
659}
660
661static inline int __ceph_caps_dirty(struct ceph_inode_info *ci)
662{
663 return ci->i_dirty_caps | ci->i_flushing_caps;
664}
665extern struct ceph_cap_flush *ceph_alloc_cap_flush(void);
666extern void ceph_free_cap_flush(struct ceph_cap_flush *cf);
667extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask,
668 struct ceph_cap_flush **pcf);
669
670extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci,
671 struct ceph_cap *ocap, int mask);
672extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask);
673extern int __ceph_caps_used(struct ceph_inode_info *ci);
674
675extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci);
676
677
678
679
680static inline int __ceph_caps_wanted(struct ceph_inode_info *ci)
681{
682 int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci);
683 if (w & CEPH_CAP_FILE_BUFFER)
684 w |= CEPH_CAP_FILE_EXCL;
685 return w;
686}
687
688
689extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check);
690
691extern void ceph_caps_init(struct ceph_mds_client *mdsc);
692extern void ceph_caps_finalize(struct ceph_mds_client *mdsc);
693extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc,
694 struct ceph_mount_options *fsopt);
695extern int ceph_reserve_caps(struct ceph_mds_client *mdsc,
696 struct ceph_cap_reservation *ctx, int need);
697extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc,
698 struct ceph_cap_reservation *ctx);
699extern void ceph_reservation_status(struct ceph_fs_client *client,
700 int *total, int *avail, int *used,
701 int *reserved, int *min);
702
703
704
705
706
707
708#define CEPH_F_SYNC 1
709#define CEPH_F_ATEND 2
710
711struct ceph_file_info {
712 short fmode;
713 short flags;
714
715 spinlock_t rw_contexts_lock;
716 struct list_head rw_contexts;
717
718 errseq_t meta_err;
719 u32 filp_gen;
720 atomic_t num_locks;
721};
722
723struct ceph_dir_file_info {
724 struct ceph_file_info file_info;
725
726
727 u32 frag;
728 struct ceph_mds_request *last_readdir;
729
730
731 unsigned next_offset;
732 char *last_name;
733 long long dir_release_count;
734 long long dir_ordered_count;
735 int readdir_cache_idx;
736
737
738 char *dir_info;
739 int dir_info_len;
740};
741
742struct ceph_rw_context {
743 struct list_head list;
744 struct task_struct *thread;
745 int caps;
746};
747
748#define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \
749 struct ceph_rw_context _name = { \
750 .thread = current, \
751 .caps = _caps, \
752 }
753
754static inline void ceph_add_rw_context(struct ceph_file_info *cf,
755 struct ceph_rw_context *ctx)
756{
757 spin_lock(&cf->rw_contexts_lock);
758 list_add(&ctx->list, &cf->rw_contexts);
759 spin_unlock(&cf->rw_contexts_lock);
760}
761
762static inline void ceph_del_rw_context(struct ceph_file_info *cf,
763 struct ceph_rw_context *ctx)
764{
765 spin_lock(&cf->rw_contexts_lock);
766 list_del(&ctx->list);
767 spin_unlock(&cf->rw_contexts_lock);
768}
769
770static inline struct ceph_rw_context*
771ceph_find_rw_context(struct ceph_file_info *cf)
772{
773 struct ceph_rw_context *ctx, *found = NULL;
774 spin_lock(&cf->rw_contexts_lock);
775 list_for_each_entry(ctx, &cf->rw_contexts, list) {
776 if (ctx->thread == current) {
777 found = ctx;
778 break;
779 }
780 }
781 spin_unlock(&cf->rw_contexts_lock);
782 return found;
783}
784
785struct ceph_readdir_cache_control {
786 struct page *page;
787 struct dentry **dentries;
788 int index;
789};
790
791
792
793
794
795
796
797
798
799
800struct ceph_snap_realm {
801 u64 ino;
802 struct inode *inode;
803 atomic_t nref;
804 struct rb_node node;
805
806 u64 created, seq;
807 u64 parent_ino;
808 u64 parent_since;
809
810 u64 *prior_parent_snaps;
811 u32 num_prior_parent_snaps;
812 u64 *snaps;
813 u32 num_snaps;
814
815 struct ceph_snap_realm *parent;
816 struct list_head children;
817 struct list_head child_item;
818
819 struct list_head empty_item;
820
821 struct list_head dirty_item;
822
823
824 struct ceph_snap_context *cached_context;
825
826 struct list_head inodes_with_caps;
827 spinlock_t inodes_with_caps_lock;
828};
829
830static inline int default_congestion_kb(void)
831{
832 int congestion_kb;
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852 congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10);
853 if (congestion_kb > 256*1024)
854 congestion_kb = 256*1024;
855
856 return congestion_kb;
857}
858
859
860
861extern int ceph_force_reconnect(struct super_block *sb);
862
863struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc,
864 u64 ino);
865extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc,
866 struct ceph_snap_realm *realm);
867extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc,
868 struct ceph_snap_realm *realm);
869extern int ceph_update_snap_trace(struct ceph_mds_client *m,
870 void *p, void *e, bool deletion,
871 struct ceph_snap_realm **realm_ret);
872extern void ceph_handle_snap(struct ceph_mds_client *mdsc,
873 struct ceph_mds_session *session,
874 struct ceph_msg *msg);
875extern void ceph_queue_cap_snap(struct ceph_inode_info *ci);
876extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
877 struct ceph_cap_snap *capsnap);
878extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc);
879
880extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc,
881 u64 snap);
882extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc,
883 struct ceph_snapid_map *sm);
884extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc);
885extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc);
886
887
888
889
890
891
892static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci)
893{
894 return !list_empty(&ci->i_cap_snaps) &&
895 list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap,
896 ci_item)->writing;
897}
898
899
900extern const struct inode_operations ceph_file_iops;
901
902extern struct inode *ceph_alloc_inode(struct super_block *sb);
903extern void ceph_evict_inode(struct inode *inode);
904extern void ceph_free_inode(struct inode *inode);
905
906extern struct inode *ceph_get_inode(struct super_block *sb,
907 struct ceph_vino vino);
908extern struct inode *ceph_get_snapdir(struct inode *parent);
909extern int ceph_fill_file_size(struct inode *inode, int issued,
910 u32 truncate_seq, u64 truncate_size, u64 size);
911extern void ceph_fill_file_time(struct inode *inode, int issued,
912 u64 time_warp_seq, struct timespec64 *ctime,
913 struct timespec64 *mtime,
914 struct timespec64 *atime);
915extern int ceph_fill_trace(struct super_block *sb,
916 struct ceph_mds_request *req);
917extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
918 struct ceph_mds_session *session);
919
920extern int ceph_inode_holds_cap(struct inode *inode, int mask);
921
922extern bool ceph_inode_set_size(struct inode *inode, loff_t size);
923extern void __ceph_do_pending_vmtruncate(struct inode *inode);
924extern void ceph_queue_vmtruncate(struct inode *inode);
925extern void ceph_queue_invalidate(struct inode *inode);
926extern void ceph_queue_writeback(struct inode *inode);
927extern void ceph_async_iput(struct inode *inode);
928
929extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page,
930 int mask, bool force);
931static inline int ceph_do_getattr(struct inode *inode, int mask, bool force)
932{
933 return __ceph_do_getattr(inode, NULL, mask, force);
934}
935extern int ceph_permission(struct inode *inode, int mask);
936extern int __ceph_setattr(struct inode *inode, struct iattr *attr);
937extern int ceph_setattr(struct dentry *dentry, struct iattr *attr);
938extern int ceph_getattr(const struct path *path, struct kstat *stat,
939 u32 request_mask, unsigned int flags);
940
941
942int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int);
943ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t);
944extern ssize_t ceph_listxattr(struct dentry *, char *, size_t);
945extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci);
946extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci);
947extern const struct xattr_handler *ceph_xattr_handlers[];
948
949struct ceph_acl_sec_ctx {
950#ifdef CONFIG_CEPH_FS_POSIX_ACL
951 void *default_acl;
952 void *acl;
953#endif
954#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
955 void *sec_ctx;
956 u32 sec_ctxlen;
957#endif
958 struct ceph_pagelist *pagelist;
959};
960
961#ifdef CONFIG_SECURITY
962extern bool ceph_security_xattr_deadlock(struct inode *in);
963extern bool ceph_security_xattr_wanted(struct inode *in);
964#else
965static inline bool ceph_security_xattr_deadlock(struct inode *in)
966{
967 return false;
968}
969static inline bool ceph_security_xattr_wanted(struct inode *in)
970{
971 return false;
972}
973#endif
974
975#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
976extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode,
977 struct ceph_acl_sec_ctx *ctx);
978static inline void ceph_security_invalidate_secctx(struct inode *inode)
979{
980 security_inode_invalidate_secctx(inode);
981}
982#else
983static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode,
984 struct ceph_acl_sec_ctx *ctx)
985{
986 return 0;
987}
988static inline void ceph_security_invalidate_secctx(struct inode *inode)
989{
990}
991#endif
992
993void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx);
994
995
996#ifdef CONFIG_CEPH_FS_POSIX_ACL
997
998struct posix_acl *ceph_get_acl(struct inode *, int);
999int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type);
1000int ceph_pre_init_acls(struct inode *dir, umode_t *mode,
1001 struct ceph_acl_sec_ctx *as_ctx);
1002void ceph_init_inode_acls(struct inode *inode,
1003 struct ceph_acl_sec_ctx *as_ctx);
1004
1005static inline void ceph_forget_all_cached_acls(struct inode *inode)
1006{
1007 forget_all_cached_acls(inode);
1008}
1009
1010#else
1011
1012#define ceph_get_acl NULL
1013#define ceph_set_acl NULL
1014
1015static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode,
1016 struct ceph_acl_sec_ctx *as_ctx)
1017{
1018 return 0;
1019}
1020static inline void ceph_init_inode_acls(struct inode *inode,
1021 struct ceph_acl_sec_ctx *as_ctx)
1022{
1023}
1024static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode)
1025{
1026 return 0;
1027}
1028
1029static inline void ceph_forget_all_cached_acls(struct inode *inode)
1030{
1031}
1032
1033#endif
1034
1035
1036extern const char *ceph_cap_string(int c);
1037extern void ceph_handle_caps(struct ceph_mds_session *session,
1038 struct ceph_msg *msg);
1039extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc,
1040 struct ceph_cap_reservation *ctx);
1041extern void ceph_add_cap(struct inode *inode,
1042 struct ceph_mds_session *session, u64 cap_id,
1043 int fmode, unsigned issued, unsigned wanted,
1044 unsigned cap, unsigned seq, u64 realmino, int flags,
1045 struct ceph_cap **new_cap);
1046extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release);
1047extern void __ceph_remove_caps(struct ceph_inode_info *ci);
1048extern void ceph_put_cap(struct ceph_mds_client *mdsc,
1049 struct ceph_cap *cap);
1050extern int ceph_is_any_caps(struct inode *inode);
1051
1052extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc);
1053extern int ceph_fsync(struct file *file, loff_t start, loff_t end,
1054 int datasync);
1055extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc,
1056 struct ceph_mds_session *session);
1057extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
1058 struct ceph_mds_session *session);
1059extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci,
1060 int mds);
1061extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps);
1062extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had);
1063extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
1064 struct ceph_snap_context *snapc);
1065extern void ceph_flush_snaps(struct ceph_inode_info *ci,
1066 struct ceph_mds_session **psession);
1067extern bool __ceph_should_report_size(struct ceph_inode_info *ci);
1068extern void ceph_check_caps(struct ceph_inode_info *ci, int flags,
1069 struct ceph_mds_session *session);
1070extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc);
1071extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc);
1072extern int ceph_drop_caps_for_unlink(struct inode *inode);
1073extern int ceph_encode_inode_release(void **p, struct inode *inode,
1074 int mds, int drop, int unless, int force);
1075extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
1076 struct inode *dir,
1077 int mds, int drop, int unless);
1078
1079extern int ceph_get_caps(struct file *filp, int need, int want,
1080 loff_t endoff, int *got, struct page **pinned_page);
1081extern int ceph_try_get_caps(struct inode *inode,
1082 int need, int want, bool nonblock, int *got);
1083
1084
1085extern void __ceph_get_fmode(struct ceph_inode_info *ci, int mode);
1086extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode);
1087
1088
1089extern const struct address_space_operations ceph_aops;
1090extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
1091extern int ceph_uninline_data(struct file *filp, struct page *locked_page);
1092extern int ceph_pool_perm_check(struct inode *inode, int need);
1093extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc);
1094
1095
1096extern const struct file_operations ceph_file_fops;
1097
1098extern int ceph_renew_caps(struct inode *inode);
1099extern int ceph_open(struct inode *inode, struct file *file);
1100extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
1101 struct file *file, unsigned flags, umode_t mode);
1102extern int ceph_release(struct inode *inode, struct file *filp);
1103extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page,
1104 char *data, size_t len);
1105
1106
1107extern const struct file_operations ceph_dir_fops;
1108extern const struct file_operations ceph_snapdir_fops;
1109extern const struct inode_operations ceph_dir_iops;
1110extern const struct inode_operations ceph_snapdir_iops;
1111extern const struct dentry_operations ceph_dentry_ops;
1112
1113extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order);
1114extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry);
1115extern int ceph_handle_snapdir(struct ceph_mds_request *req,
1116 struct dentry *dentry, int err);
1117extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
1118 struct dentry *dentry, int err);
1119
1120extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di);
1121extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di);
1122extern void ceph_invalidate_dentry_lease(struct dentry *dentry);
1123extern int ceph_trim_dentries(struct ceph_mds_client *mdsc);
1124extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn);
1125extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl);
1126
1127
1128extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1129
1130
1131extern const struct export_operations ceph_export_ops;
1132struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino);
1133
1134
1135extern __init void ceph_flock_init(void);
1136extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl);
1137extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl);
1138extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num);
1139extern int ceph_encode_locks_to_buffer(struct inode *inode,
1140 struct ceph_filelock *flocks,
1141 int num_fcntl_locks,
1142 int num_flock_locks);
1143extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks,
1144 struct ceph_pagelist *pagelist,
1145 int num_fcntl_locks, int num_flock_locks);
1146
1147
1148extern void ceph_fs_debugfs_init(struct ceph_fs_client *client);
1149extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client);
1150
1151
1152static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci)
1153{
1154 return ci->i_max_files || ci->i_max_bytes;
1155}
1156
1157extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc);
1158
1159static inline void __ceph_update_quota(struct ceph_inode_info *ci,
1160 u64 max_bytes, u64 max_files)
1161{
1162 bool had_quota, has_quota;
1163 had_quota = __ceph_has_any_quota(ci);
1164 ci->i_max_bytes = max_bytes;
1165 ci->i_max_files = max_files;
1166 has_quota = __ceph_has_any_quota(ci);
1167
1168 if (had_quota != has_quota)
1169 ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota);
1170}
1171
1172extern void ceph_handle_quota(struct ceph_mds_client *mdsc,
1173 struct ceph_mds_session *session,
1174 struct ceph_msg *msg);
1175extern bool ceph_quota_is_max_files_exceeded(struct inode *inode);
1176extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new);
1177extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode,
1178 loff_t newlen);
1179extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode,
1180 loff_t newlen);
1181extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc,
1182 struct kstatfs *buf);
1183extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc);
1184
1185#endif
1186