summaryrefslogtreecommitdiffstats
path: root/libglusterfs/src/glusterfs/syncop.h
blob: 3614d96926453e5a5e89145c3eda97950ad57b13 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
/*
  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
  This file is part of GlusterFS.

  This file is licensed to you under your choice of the GNU Lesser
  General Public License, version 3 or any later version (LGPLv3 or
  later), or the GNU General Public License, version 2 (GPLv2), in all
  cases as published by the Free Software Foundation.
*/

#ifndef _SYNCOP_H
#define _SYNCOP_H

#include <sys/time.h>
#include <pthread.h>
#include <ucontext.h>
#include "glusterfs/dict.h"   // for dict_t
#include "glusterfs/stack.h"  // for call_frame_t, STACK_DESTROY, STACK_...
#define SYNCENV_PROC_MAX 16
#define SYNCENV_PROC_MIN 2
#define SYNCPROC_IDLE_TIME 600

/*
 * Flags for syncopctx valid elements
 */
#define SYNCOPCTX_UID 0x00000001
#define SYNCOPCTX_GID 0x00000002
#define SYNCOPCTX_GROUPS 0x00000004
#define SYNCOPCTX_PID 0x00000008
#define SYNCOPCTX_LKOWNER 0x00000010

struct synctask;
struct syncproc;
struct syncenv;

typedef int (*synctask_cbk_t)(int ret, call_frame_t *frame, void *opaque);

typedef int (*synctask_fn_t)(void *opaque);

typedef enum {
    SYNCTASK_INIT = 0,
    SYNCTASK_RUN,
    SYNCTASK_SUSPEND,
    SYNCTASK_WAIT,
    SYNCTASK_DONE,
    SYNCTASK_ZOMBIE,
} synctask_state_t;

/* for one sequential execution of @syncfn */
struct synctask {
    struct list_head all_tasks;
    struct syncenv *env;
    xlator_t *xl;
    call_frame_t *frame;
    call_frame_t *opframe;
    synctask_cbk_t synccbk;
    synctask_fn_t syncfn;
    synctask_state_t state;
    void *opaque;
    void *stack;
    int woken;
    int slept;
    int ret;

    uid_t uid;
    gid_t gid;

    ucontext_t ctx;
    struct syncproc *proc;

    pthread_mutex_t mutex; /* for synchronous spawning of synctask */
    pthread_cond_t cond;
    int done;

    struct list_head waitq; /* can wait only "once" at a time */
};

struct syncproc {
    pthread_t processor;
    ucontext_t sched;
    struct syncenv *env;
    struct synctask *current;
};

/* hosts the scheduler thread and framework for executing synctasks */
struct syncenv {
    struct syncproc proc[SYNCENV_PROC_MAX];
    int procs;

    struct list_head runq;
    int runcount;
    struct list_head waitq;
    int waitcount;

    int procmin;
    int procmax;

    pthread_mutex_t mutex;
    pthread_cond_t cond;

    size_t stacksize;

    int destroy; /* FLAG to mark syncenv is in destroy mode
                    so that no more synctasks are accepted*/
};

typedef enum { LOCK_NULL = 0, LOCK_TASK, LOCK_THREAD } lock_type_t;

typedef enum {
    SYNC_LOCK_DEFAULT = 0,
    SYNC_LOCK_RECURSIVE, /*it allows recursive locking*/
} lock_attr_t;

struct synclock {
    pthread_mutex_t guard;  /* guard the remaining members, pair @cond */
    pthread_cond_t cond;    /* waiting non-synctasks */
    struct list_head waitq; /* waiting synctasks */
    volatile int lock;      /* true(non zero) or false(zero), lock status */
    lock_attr_t attr;
    struct synctask *owner; /* NULL if current owner is not a synctask */
    pthread_t owner_tid;
    lock_type_t type;
};
typedef struct synclock synclock_t;

struct syncbarrier {
    gf_boolean_t initialized; /*Set on successful initialization*/
    pthread_mutex_t guard;    /* guard the remaining members, pair @cond */
    pthread_cond_t cond;      /* waiting non-synctasks */
    struct list_head waitq;   /* waiting synctasks */
    int count;                /* count the number of wakes */
    int waitfor;              /* no. of wakes until which task can be in
                                 waitq before being woken up. */
};
typedef struct syncbarrier syncbarrier_t;

struct syncargs {
    int op_ret;
    int op_errno;

    /*
     * The below 3 iatt structures are used in the fops
     * whose callbacks get struct iatt as one of the
     * a return arguments. Currently, the maximum number
     * of iatt structures returned is 3 for some fops
     * such as mknod, copy_file_range, mkdir etc. So
     * all the following 3 iatt structures would be used
     * for those fops.
     */
    struct iatt iatt1;
    struct iatt iatt2;
    struct iatt iatt3;
    dict_t *xattr;
    struct statvfs statvfs_buf;
    struct iovec *vector;
    int count;
    struct iobref *iobref;
    char *buffer;
    dict_t *xdata;
    struct gf_flock flock;
    struct gf_lease lease;
    dict_t *dict_out;

    /* some more _cbk needs */
    uuid_t uuid;
    char *errstr;
    dict_t *dict;
    pthread_mutex_t lock_dict;

    syncbarrier_t barrier;

    /* do not touch */
    struct synctask *task;
    pthread_mutex_t mutex;
    pthread_cond_t cond;
    int done;

    gf_dirent_t entries;
    off_t offset;

    lock_migration_info_t locklist;
};

struct syncopctx {
    unsigned int valid; /* valid flags for elements that are set */
    uid_t uid;
    gid_t gid;
    int grpsize;
    int ngrps;
    gid_t *groups;
    pid_t pid;
    gf_lkowner_t lk_owner;
};

#define __yawn(args)                                                           \
    do {                                                                       \
        args->task = synctask_get();                                           \
        if (args->task)                                                        \
            break;                                                             \
        pthread_mutex_init(&args->mutex, NULL);                                \
        pthread_cond_init(&args->cond, NULL);                                  \
        args->done = 0;                                                        \
    } while (0)

#define __wake(args)                                                           \
    do {                                                                       \
        if (args->task) {                                                      \
            synctask_wake(args->task);                                         \
        } else {                                                               \
            pthread_mutex_lock(&args->mutex);                                  \
            {                                                                  \
                args->done = 1;                                                \
                pthread_cond_signal(&args->cond);                              \
            }                                                                  \
            pthread_mutex_unlock(&args->mutex);                                \
        }                                                                      \
    } while (0)

#define __yield(args)                                                          \
    do {                                                                       \
        if (args->task) {                                                      \
            synctask_yield(args->task);                                        \
        } else {                                                               \
            pthread_mutex_lock(&args->mutex);                                  \
            {                                                                  \
                while (!args->done)                                            \
                    pthread_cond_wait(&args->cond, &args->mutex);              \
            }                                                                  \
            pthread_mutex_unlock(&args->mutex);                                \
            pthread_mutex_destroy(&args->mutex);                               \
            pthread_cond_destroy(&args->cond);                                 \
        }                                                                      \
    } while (0)

#define SYNCOP(subvol, stb, cbk, fn_op, params...)                             \
    do {                                                                       \
        struct synctask *task = NULL;                                          \
        call_frame_t *frame = NULL;                                            \
                                                                               \
        task = synctask_get();                                                 \
        stb->task = task;                                                      \
        if (task)                                                              \
            frame = task->opframe;                                             \
        else                                                                   \
            frame = syncop_create_frame(THIS);                                 \
                                                                               \
        if (!frame) {                                                          \
            stb->op_ret = -1;                                                  \
            stb->op_errno = errno;                                             \
            break;                                                             \
        }                                                                      \
                                                                               \
        if (task) {                                                            \
            frame->root->uid = task->uid;                                      \
            frame->root->gid = task->gid;                                      \
        }                                                                      \
                                                                               \
        __yawn(stb);                                                           \
                                                                               \
        frame->op = get_fop_index_from_fn(subvol, fn_op);                      \
        STACK_WIND_COOKIE(frame, cbk, (void *)stb, subvol, fn_op, params);     \
                                                                               \
        __yield(stb);                                                          \
        if (task)                                                              \
            STACK_RESET(frame->root);                                          \
        else                                                                   \
            STACK_DESTROY(frame->root);                                        \
    } while (0)

/*
 * syncop_xxx() calls are executed in two ways, one is inside a synctask where
 * the executing function will do 'swapcontext' and the other is without
 * synctask where the executing thread is made to wait using pthread_cond_wait.
 * Executing thread may change when syncop_xxx() is executed inside a synctask.
 * This leads to errno_location change i.e. errno may give errno of
 * non-executing thread. So errno is not touched inside a synctask execution.
 * All gfapi calls are executed using the second way of executing syncop_xxx()
 * where the executing thread waits using pthread_cond_wait so it is ok to set
 * errno in these cases. The following macro makes syncop_xxx() behave just
 * like a system call, where -1 is returned and errno is set when a failure
 * occurs.
 */
#define DECODE_SYNCOP_ERR(ret)                                                 \
    do {                                                                       \
        if (ret < 0) {                                                         \
            errno = -ret;                                                      \
            ret = -1;                                                          \
        } else {                                                               \
            errno = 0;                                                         \
        }                                                                      \
    } while (0)

#define SYNCENV_DEFAULT_STACKSIZE (2 * 1024 * 1024)

struct syncenv *
syncenv_new(size_t stacksize, int procmin, int procmax);
void
syncenv_destroy(struct syncenv *);
void
syncenv_scale(struct syncenv *env);

int
synctask_new1(struct syncenv *, size_t stacksize, synctask_fn_t, synctask_cbk_t,
              call_frame_t *frame, void *);
int
synctask_new(struct syncenv *, synctask_fn_t, synctask_cbk_t,
             call_frame_t *frame, void *);
struct synctask *
synctask_create(struct syncenv *, size_t stacksize, synctask_fn_t,
                synctask_cbk_t, call_frame_t *, void *);
int
synctask_join(struct synctask *task);
void
synctask_wake(struct synctask *task);
void
synctask_yield(struct synctask *task);
void
synctask_waitfor(struct synctask *task, int count);

#define synctask_barrier_init(args) syncbarrier_init(&args->barrier)
#define synctask_barrier_wait(args, n) syncbarrier_wait(&args->barrier, n)
#define synctask_barrier_wake(args) syncbarrier_wake(&args->barrier)

int
synctask_setid(struct synctask *task, uid_t uid, gid_t gid);
#define SYNCTASK_SETID(uid, gid) synctask_setid(synctask_get(), uid, gid);

int
syncopctx_setfsuid(void *uid);
int
syncopctx_setfsgid(void *gid);
int
syncopctx_setfsgroups(int count, const void *groups);
int
syncopctx_setfspid(void *pid);
int
syncopctx_setfslkowner(gf_lkowner_t *lk_owner);

static inline call_frame_t *
syncop_create_frame(xlator_t *this)
{
    call_frame_t *frame = NULL;
    int ngrps = -1;
    struct syncopctx *opctx = NULL;

    frame = create_frame(this, this->ctx->pool);
    if (!frame)
        return NULL;

    frame->root->type = GF_OP_TYPE_FOP;
    opctx = syncopctx_getctx();

    if (opctx && (opctx->valid & SYNCOPCTX_PID))
        frame->root->pid = opctx->pid;
    else
        frame->root->pid = getpid();

    if (opctx && (opctx->valid & SYNCOPCTX_UID))
        frame->root->uid = opctx->uid;
    else
        frame->root->uid = geteuid();

    if (opctx && (opctx->valid & SYNCOPCTX_GID))
        frame->root->gid = opctx->gid;
    else
        frame->root->gid = getegid();

    if (opctx && (opctx->valid & SYNCOPCTX_GROUPS)) {
        ngrps = opctx->ngrps;

        if (ngrps != 0 && opctx->groups != NULL) {
            if (call_stack_alloc_groups(frame->root, ngrps) != 0) {
                STACK_DESTROY(frame->root);
                return NULL;
            }

            memcpy(frame->root->groups, opctx->groups, (sizeof(gid_t) * ngrps));
        }
    } else {
        ngrps = getgroups(0, 0);
        if (ngrps < 0) {
            STACK_DESTROY(frame->root);
            return NULL;
        }

        if (call_stack_alloc_groups(frame->root, ngrps) != 0) {
            STACK_DESTROY(frame->root);
            return NULL;
        }

        if (getgroups(ngrps, frame->root->groups) < 0) {
            STACK_DESTROY(frame->root);
            return NULL;
        }
    }

    if (opctx && (opctx->valid & SYNCOPCTX_LKOWNER))
        frame->root->lk_owner = opctx->lk_owner;

    return frame;
}

int
synclock_init(synclock_t *lock, lock_attr_t attr);
int
synclock_destroy(synclock_t *lock);
int
synclock_lock(synclock_t *lock);
int
synclock_trylock(synclock_t *lock);
int
synclock_unlock(synclock_t *lock);

int
syncbarrier_init(syncbarrier_t *barrier);
int
syncbarrier_wait(syncbarrier_t *barrier, int waitfor);
int
syncbarrier_wake(syncbarrier_t *barrier);
int
syncbarrier_destroy(syncbarrier_t *barrier);

int
syncop_lookup(xlator_t *subvol, loc_t *loc,
              /* out */
              struct iatt *iatt, struct iatt *parent,
              /* xdata */
              dict_t *xdata_in, dict_t **xdata_out);

int
syncop_readdirp(xlator_t *subvol, fd_t *fd, size_t size, off_t off,
                /* out */
                gf_dirent_t *entries, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_readdir(xlator_t *subvol, fd_t *fd, size_t size, off_t off,
               gf_dirent_t *entries, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_opendir(xlator_t *subvol, loc_t *loc, fd_t *fd, dict_t *xdata_in,
               dict_t **xdata_out);

int
syncop_setattr(xlator_t *subvol, loc_t *loc, struct iatt *iatt, int valid,
               /* out */
               struct iatt *preop, struct iatt *postop, dict_t *xdata_in,
               dict_t **xdata_out);

int
syncop_fsetattr(xlator_t *subvol, fd_t *fd, struct iatt *iatt, int valid,
                /* out */
                struct iatt *preop, struct iatt *postop, dict_t *xdata_in,
                dict_t **xdata_out);

int
syncop_statfs(xlator_t *subvol, loc_t *loc,
              /* out */
              struct statvfs *buf, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_setxattr(xlator_t *subvol, loc_t *loc, dict_t *dict, int32_t flags,
                dict_t *xdata_in, dict_t **xdata_out);

int
syncop_fsetxattr(xlator_t *subvol, fd_t *fd, dict_t *dict, int32_t flags,
                 dict_t *xdata_in, dict_t **xdata_out);

int
syncop_listxattr(xlator_t *subvol, loc_t *loc, dict_t **dict, dict_t *xdata_in,
                 dict_t **xdata_out);

int
syncop_getxattr(xlator_t *xl, loc_t *loc, dict_t **dict, const char *key,
                dict_t *xdata_in, dict_t **xdata_out);

int
syncop_fgetxattr(xlator_t *xl, fd_t *fd, dict_t **dict, const char *key,
                 dict_t *xdata_in, dict_t **xdata_out);

int
syncop_removexattr(xlator_t *subvol, loc_t *loc, const char *name,
                   dict_t *xdata_in, dict_t **xdata_out);

int
syncop_fremovexattr(xlator_t *subvol, fd_t *fd, const char *name,
                    dict_t *xdata_in, dict_t **xdata_out);

int
syncop_create(xlator_t *subvol, loc_t *loc, int32_t flags, mode_t mode,
              fd_t *fd, struct iatt *iatt, dict_t *xdata_in,
              dict_t **xdata_out);

int
syncop_open(xlator_t *subvol, loc_t *loc, int32_t flags, fd_t *fd,
            dict_t *xdata_in, dict_t **xdata_out);

int
syncop_close(fd_t *fd);

int
syncop_write(xlator_t *subvol, fd_t *fd, const char *buf, int size,
             off_t offset, struct iobref *iobref, uint32_t flags,
             dict_t *xdata_in, dict_t **xdata_out);

int
syncop_writev(xlator_t *subvol, fd_t *fd, const struct iovec *vector,
              int32_t count, off_t offset, struct iobref *iobref,
              uint32_t flags, struct iatt *preiatt, struct iatt *postiatt,
              dict_t *xdata_in, dict_t **xdata_out);

int
syncop_readv(xlator_t *subvol, fd_t *fd, size_t size, off_t off, uint32_t flags,
             /* out */
             struct iovec **vector, int *count, struct iobref **iobref,
             struct iatt *iatt, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_ftruncate(xlator_t *subvol, fd_t *fd, off_t offset, struct iatt *preiatt,
                 struct iatt *postiatt, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_truncate(xlator_t *subvol, loc_t *loc, off_t offset, dict_t *xdata_in,
                dict_t **xdata_out);

int
syncop_unlink(xlator_t *subvol, loc_t *loc, dict_t *xdata_in,
              dict_t **xdata_out);

int
syncop_rmdir(xlator_t *subvol, loc_t *loc, int flags, dict_t *xdata_in,
             dict_t **xdata_out);

int
syncop_fsync(xlator_t *subvol, fd_t *fd, int dataonly, struct iatt *preiatt,
             struct iatt *postiatt, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_flush(xlator_t *subvol, fd_t *fd, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_fstat(xlator_t *subvol, fd_t *fd, struct iatt *stbuf, dict_t *xdata_in,
             dict_t **xdata_out);

int
syncop_stat(xlator_t *subvol, loc_t *loc, struct iatt *stbuf, dict_t *xdata_in,
            dict_t **xdata_out);

int
syncop_symlink(xlator_t *subvol, loc_t *loc, const char *newpath,
               struct iatt *iatt, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_readlink(xlator_t *subvol, loc_t *loc, char **buffer, size_t size,
                dict_t *xdata_in, dict_t **xdata_out);

int
syncop_mknod(xlator_t *subvol, loc_t *loc, mode_t mode, dev_t rdev,
             struct iatt *iatt, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_mkdir(xlator_t *subvol, loc_t *loc, mode_t mode, struct iatt *iatt,
             dict_t *xdata_in, dict_t **xdata_out);

int
syncop_link(xlator_t *subvol, loc_t *oldloc, loc_t *newloc, struct iatt *iatt,
            dict_t *xdata_in, dict_t **xdata_out);

int
syncop_fsyncdir(xlator_t *subvol, fd_t *fd, int datasync, dict_t *xdata_in,
                dict_t **xdata_out);

int
syncop_access(xlator_t *subvol, loc_t *loc, int32_t mask, dict_t *xdata_in,
              dict_t **xdata_out);

int
syncop_fallocate(xlator_t *subvol, fd_t *fd, int32_t keep_size, off_t offset,
                 size_t len, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_discard(xlator_t *subvol, fd_t *fd, off_t offset, size_t len,
               dict_t *xdata_in, dict_t **xdata_out);

int
syncop_zerofill(xlator_t *subvol, fd_t *fd, off_t offset, off_t len,
                dict_t *xdata_in, dict_t **xdata_out);

int
syncop_rename(xlator_t *subvol, loc_t *oldloc, loc_t *newloc, dict_t *xdata_in,
              dict_t **xdata_out);

int
syncop_lk(xlator_t *subvol, fd_t *fd, int cmd, struct gf_flock *flock,
          dict_t *xdata_in, dict_t **xdata_out);

int
syncop_inodelk(xlator_t *subvol, const char *volume, loc_t *loc, int32_t cmd,
               struct gf_flock *lock, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_lease(xlator_t *subvol, loc_t *loc, struct gf_lease *lease,
             dict_t *xdata_in, dict_t **xdata_out);

int
syncop_ipc(xlator_t *subvol, int op, dict_t *xdata_in, dict_t **xdata_out);

int
syncop_xattrop(xlator_t *subvol, loc_t *loc, gf_xattrop_flags_t flags,
               dict_t *dict, dict_t *xdata_in, dict_t **dict_out,
               dict_t **xdata_out);

int
syncop_fxattrop(xlator_t *subvol, fd_t *fd, gf_xattrop_flags_t flags,
                dict_t *dict, dict_t *xdata_in, dict_t **dict_out,
                dict_t **xdata_out);

int
syncop_seek(xlator_t *subvol, fd_t *fd, off_t offset, gf_seek_what_t what,
            dict_t *xdata_in, off_t *off);

int
syncop_getactivelk(xlator_t *subvol, loc_t *loc,
                   lock_migration_info_t *locklist, dict_t *xdata_in,
                   dict_t **xdata_out);

int
syncop_setactivelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
                       int32_t op_ret, int32_t op_errno, dict_t *xdata);

int
syncop_setactivelk(xlator_t *subvol, loc_t *loc,
                   lock_migration_info_t *locklist, dict_t *xdata_in,
                   dict_t **xdata_out);

int
syncop_put(xlator_t *subvol, loc_t *loc, mode_t mode, mode_t umask,
           uint32_t flags, struct iovec *vector, int32_t count, off_t offset,
           struct iobref *iobref, dict_t *xattr, struct iatt *iatt,
           dict_t *xdata_in, dict_t **xdata_out);

int
syncop_setactivelk_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
                       int32_t op_ret, int32_t op_errno, dict_t *xdata);

int
syncop_icreate(xlator_t *subvol, loc_t *loc, mode_t mode, dict_t *xdata_out);

int
syncop_entrylk(xlator_t *subvol, const char *volume, loc_t *loc,
               const char *basename, entrylk_cmd cmd, entrylk_type type,
               dict_t *xdata_in, dict_t **xdata_out);

int
syncop_copy_file_range(xlator_t *subvol, fd_t *fd_in, off64_t off_in,
                       fd_t *fd_out, off64_t off_out, size_t len,
                       uint32_t flags, struct iatt *stbuf,
                       struct iatt *preiatt_dst, struct iatt *postiatt_dst,
                       dict_t *xdata_in, dict_t **xdata_out);

int
syncop_copy_file_range_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
                           int op_ret, int op_errno, struct iatt *stbuf,
                           struct iatt *prebuf_dst, struct iatt *postbuf_dst,
                           dict_t *xdata);

#endif /* _SYNCOP_H */