summaryrefslogtreecommitdiffstats
path: root/libglusterfs/src/glusterfs.h
blob: a172c2a854c4bb301fb4e71a6f9bb4d915669ebf (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
/*
  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 _GLUSTERFS_H
#define _GLUSTERFS_H

#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <netdb.h>
#include <errno.h>
#include <dirent.h>
#include <unistd.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <sys/poll.h>
#include <pthread.h>
#include <limits.h> /* For PATH_MAX */

#include "list.h"
#include "logging.h"
#include "lkowner.h"

#define GF_YES 1
#define GF_NO  0

#ifndef O_LARGEFILE
/* savannah bug #20053, patch for compiling on darwin */
#define O_LARGEFILE 0100000 /* from bits/fcntl.h */
#endif

#ifndef O_FMODE_EXEC
/* redhat bug 843080, added from linux/fs.h */
#define O_FMODE_EXEC 040 //0x20
#endif

#ifndef O_DIRECT
/* savannah bug #20050, #20052 */
#define O_DIRECT 0 /* From asm/fcntl.h */
#endif

#ifndef O_DIRECTORY
/* FreeBSD does not need O_DIRECTORY */
#define O_DIRECTORY 0
#endif

#ifndef EBADFD
/* Mac OS X does not have EBADFD */
#define EBADFD EBADF
#endif

#ifndef FNM_EXTMATCH
#define FNM_EXTMATCH 0
#endif

#define GLUSTERD_MAX_SNAP_NAME  255
#define ZR_MOUNTPOINT_OPT       "mountpoint"
#define ZR_ATTR_TIMEOUT_OPT     "attribute-timeout"
#define ZR_ENTRY_TIMEOUT_OPT    "entry-timeout"
#define ZR_NEGATIVE_TIMEOUT_OPT "negative-timeout"
#define ZR_DIRECT_IO_OPT        "direct-io-mode"
#define ZR_STRICT_VOLFILE_CHECK "strict-volfile-check"
#define ZR_DUMP_FUSE            "dump-fuse"
#define ZR_FUSE_MOUNTOPTS       "fuse-mountopts"

#define GF_XATTR_CLRLK_CMD      "glusterfs.clrlk"
#define GF_XATTR_PATHINFO_KEY   "trusted.glusterfs.pathinfo"
#define GF_XATTR_NODE_UUID_KEY  "trusted.glusterfs.node-uuid"
#define GF_XATTR_VOL_ID_KEY   "trusted.glusterfs.volume-id"
#define GF_XATTR_LOCKINFO_KEY   "trusted.glusterfs.lockinfo"
#define GF_XATTR_GET_REAL_FILENAME_KEY "glusterfs.get_real_filename:"
#define GF_XATTR_USER_PATHINFO_KEY   "glusterfs.pathinfo"
#define QUOTA_LIMIT_KEY "trusted.glusterfs.quota.limit-set"
#define VIRTUAL_QUOTA_XATTR_CLEANUP_KEY "glusterfs.quota-xattr-cleanup"

#define GF_READDIR_SKIP_DIRS       "readdir-filter-directories"

#define BD_XATTR_KEY             "user.glusterfs"

#define XATTR_IS_PATHINFO(x)  ((strncmp (x, GF_XATTR_PATHINFO_KEY,       \
                                        strlen (x)) == 0) ||             \
                              (strncmp (x, GF_XATTR_USER_PATHINFO_KEY,   \
                                         strlen (x)) == 0))
#define XATTR_IS_NODE_UUID(x) (strncmp (x, GF_XATTR_NODE_UUID_KEY,      \
                                        strlen (GF_XATTR_NODE_UUID_KEY)) == 0)
#define XATTR_IS_LOCKINFO(x) (strncmp (x, GF_XATTR_LOCKINFO_KEY,        \
                                       strlen (GF_XATTR_LOCKINFO_KEY)) == 0)

#define XATTR_IS_BD(x) (strncmp (x, BD_XATTR_KEY, strlen (BD_XATTR_KEY)) == 0)

#define GF_XATTR_LINKINFO_KEY   "trusted.distribute.linkinfo"
#define GFID_XATTR_KEY          "trusted.gfid"
#define PGFID_XATTR_KEY_PREFIX  "trusted.pgfid."
#define VIRTUAL_GFID_XATTR_KEY_STR  "glusterfs.gfid.string"
#define VIRTUAL_GFID_XATTR_KEY      "glusterfs.gfid"
#define UUID_CANONICAL_FORM_LEN 36

#define GET_ANCESTRY_PATH_KEY "glusterfs.ancestry.path"
#define GET_ANCESTRY_DENTRY_KEY "glusterfs.ancestry.dentry"

#define GLUSTERFS_INTERNAL_FOP_KEY  "glusterfs-internal-fop"

#define ZR_FILE_CONTENT_STR     "glusterfs.file."
#define ZR_FILE_CONTENT_STRLEN 15

#define GLUSTERFS_WRITE_IS_APPEND "glusterfs.write-is-append"
#define GLUSTERFS_OPEN_FD_COUNT "glusterfs.open-fd-count"
#define GLUSTERFS_INODELK_COUNT "glusterfs.inodelk-count"
#define GLUSTERFS_ENTRYLK_COUNT "glusterfs.entrylk-count"
#define GLUSTERFS_POSIXLK_COUNT "glusterfs.posixlk-count"
#define GLUSTERFS_PARENT_ENTRYLK "glusterfs.parent-entrylk"
#define GLUSTERFS_INODELK_DOM_COUNT "glusterfs.inodelk-dom-count"
#define QUOTA_SIZE_KEY "trusted.glusterfs.quota.size"
#define GFID_TO_PATH_KEY "glusterfs.gfid2path"
#define GF_XATTR_STIME_PATTERN "trusted.glusterfs.*.stime"

/* Index xlator related */
#define GF_XATTROP_INDEX_GFID "glusterfs.xattrop_index_gfid"
#define GF_XATTROP_INDEX_COUNT "glusterfs.xattrop_index_count"

#define GF_GFIDLESS_LOOKUP "gfidless-lookup"
/* replace-brick and pump related internal xattrs */
#define RB_PUMP_CMD_START       "glusterfs.pump.start"
#define RB_PUMP_CMD_PAUSE       "glusterfs.pump.pause"
#define RB_PUMP_CMD_COMMIT      "glusterfs.pump.commit"
#define RB_PUMP_CMD_ABORT       "glusterfs.pump.abort"
#define RB_PUMP_CMD_STATUS      "glusterfs.pump.status"

#define GLUSTERFS_MARKER_DONT_ACCOUNT_KEY "glusters.marker.dont-account"
#define GLUSTERFS_RDMA_INLINE_THRESHOLD       (2048)
#define GLUSTERFS_RDMA_MAX_HEADER_SIZE        (228) /* (sizeof (rdma_header_t)                 \
                                                       + RDMA_MAX_SEGMENTS \
                                                       * sizeof (rdma_read_chunk_t))
                                                       */

#define GLUSTERFS_RPC_REPLY_SIZE               24

#define ZR_FILE_CONTENT_REQUEST(key) (!strncmp(key, ZR_FILE_CONTENT_STR, \
                                               ZR_FILE_CONTENT_STRLEN))

#define DEFAULT_VAR_RUN_DIRECTORY    DATADIR "/run/gluster"
#define GF_REPLICATE_TRASH_DIR          ".landfill"

/* GlusterFS's maximum supported Auxilary GIDs */
/* TODO: Keeping it to 200, so that we can fit in 2KB buffer for auth data
 * in RPC server code, if there is ever need for having more aux-gids, then
 * we have to add aux-gid in payload of actors */
#define GF_MAX_AUX_GROUPS   65536

#define GF_UUID_BUF_SIZE 50

#define GF_REBALANCE_TID_KEY     "rebalance-id"
#define GF_REMOVE_BRICK_TID_KEY  "remove-brick-id"
#define GF_REPLACE_BRICK_TID_KEY "replace-brick-id"

#define UUID_CANONICAL_FORM_LEN  36

/* Adding this here instead of any glusterd*.h files as it is also required by
 * cli
 */
#define DEFAULT_GLUSTERD_SOCKFILE             DATADIR "/run/glusterd.socket"

/* features/marker-quota also needs to have knowledge of link-files so as to
 * exclude them from accounting.
 */
#define DHT_LINKFILE_MODE        (S_ISVTX)

#define IS_DHT_LINKFILE_MODE(iabuf) ((st_mode_from_ia ((iabuf)->ia_prot, \
                                                       (iabuf)->ia_type) & ~S_IFMT)\
                                     == DHT_LINKFILE_MODE)
#define DHT_LINKFILE_STR "linkto"

/* NOTE: add members ONLY at the end (just before _MAXVALUE) */
typedef enum {
        GF_FOP_NULL = 0,
        GF_FOP_STAT,
        GF_FOP_READLINK,
        GF_FOP_MKNOD,
        GF_FOP_MKDIR,
        GF_FOP_UNLINK,
        GF_FOP_RMDIR,
        GF_FOP_SYMLINK,
        GF_FOP_RENAME,
        GF_FOP_LINK,
        GF_FOP_TRUNCATE,
        GF_FOP_OPEN,
        GF_FOP_READ,
        GF_FOP_WRITE,
        GF_FOP_STATFS,
        GF_FOP_FLUSH,
        GF_FOP_FSYNC,      /* 16 */
        GF_FOP_SETXATTR,
        GF_FOP_GETXATTR,
        GF_FOP_REMOVEXATTR,
        GF_FOP_OPENDIR,
        GF_FOP_FSYNCDIR,
        GF_FOP_ACCESS,
        GF_FOP_CREATE,
        GF_FOP_FTRUNCATE,
        GF_FOP_FSTAT,      /* 25 */
        GF_FOP_LK,
        GF_FOP_LOOKUP,
        GF_FOP_READDIR,
        GF_FOP_INODELK,
        GF_FOP_FINODELK,
        GF_FOP_ENTRYLK,
        GF_FOP_FENTRYLK,
        GF_FOP_XATTROP,
        GF_FOP_FXATTROP,
        GF_FOP_FGETXATTR,
        GF_FOP_FSETXATTR,
        GF_FOP_RCHECKSUM,
        GF_FOP_SETATTR,
        GF_FOP_FSETATTR,
        GF_FOP_READDIRP,
        GF_FOP_FORGET,
        GF_FOP_RELEASE,
        GF_FOP_RELEASEDIR,
        GF_FOP_GETSPEC,
        GF_FOP_FREMOVEXATTR,
	GF_FOP_FALLOCATE,
	GF_FOP_DISCARD,
        GF_FOP_ZEROFILL,
        GF_FOP_IPC,
        GF_FOP_MAXVALUE,
} glusterfs_fop_t;


typedef enum {
        GF_MGMT_NULL = 0,
        GF_MGMT_MAXVALUE,
} glusterfs_mgmt_t;

typedef enum {
        GF_OP_TYPE_NULL = 0,
        GF_OP_TYPE_FOP,
        GF_OP_TYPE_MGMT,
        GF_OP_TYPE_MAX,
} gf_op_type_t;

/* NOTE: all the miscellaneous flags used by GlusterFS should be listed here */
typedef enum {
        GF_LK_GETLK = 0,
        GF_LK_SETLK,
        GF_LK_SETLKW,
        GF_LK_RESLK_LCK,
        GF_LK_RESLK_LCKW,
        GF_LK_RESLK_UNLCK,
        GF_LK_GETLK_FD,
} glusterfs_lk_cmds_t;


typedef enum {
        GF_LK_F_RDLCK = 0,
        GF_LK_F_WRLCK,
        GF_LK_F_UNLCK,
        GF_LK_EOL,
} glusterfs_lk_types_t;

typedef enum {
        F_RESLK_LCK = 200,
        F_RESLK_LCKW,
        F_RESLK_UNLCK,
        F_GETLK_FD,
} glusterfs_lk_recovery_cmds_t;

typedef enum {
        GF_LOCK_POSIX,
        GF_LOCK_INTERNAL
} gf_lk_domain_t;


typedef enum {
        ENTRYLK_LOCK,
        ENTRYLK_UNLOCK,
        ENTRYLK_LOCK_NB
} entrylk_cmd;


typedef enum {
        ENTRYLK_RDLCK,
        ENTRYLK_WRLCK
} entrylk_type;


typedef enum {
        GF_XATTROP_ADD_ARRAY,
        GF_XATTROP_ADD_ARRAY64,
        GF_XATTROP_OR_ARRAY,
        GF_XATTROP_AND_ARRAY
} gf_xattrop_flags_t;


#define GF_SET_IF_NOT_PRESENT 0x1 /* default behaviour */
#define GF_SET_OVERWRITE      0x2 /* Overwrite with the buf given */
#define GF_SET_DIR_ONLY       0x4
#define GF_SET_EPOCH_TIME     0x8 /* used by afr dir lookup selfheal */

/* key value which quick read uses to get small files in lookup cbk */
#define GF_CONTENT_KEY "glusterfs.content"

struct _xlator_cmdline_option {
        struct list_head    cmd_args;
        char               *volume;
        char               *key;
        char               *value;
};
typedef struct _xlator_cmdline_option xlator_cmdline_option_t;

struct _server_cmdline {
        struct list_head  list;
        char              *volfile_server;
        char              *transport;
        int               port;
};
typedef struct _server_cmdline server_cmdline_t;

#define GF_OPTION_ENABLE   _gf_true
#define GF_OPTION_DISABLE  _gf_false
#define GF_OPTION_DEFERRED 2

struct _cmd_args {
        /* basic options */
        char             *volfile_server;
        server_cmdline_t *curr_server;
        /* List of backup volfile servers, including original */
        struct list_head volfile_servers;
        char             *volfile;
        char             *log_server;
        gf_loglevel_t    log_level;
        char            *log_file;
        char            *log_ident;
        gf_log_logger_t  logger;
        gf_log_format_t  log_format;
        int32_t          max_connect_attempts;
        /* advanced options */
        uint32_t         volfile_server_port;
        char            *volfile_server_transport;
        uint32_t         log_server_port;
        char            *pid_file;
        char            *sock_file;
        int              no_daemon_mode;
        char            *run_id;
        int              debug_mode;
        int              read_only;
        int              acl;
        int              selinux;
        int              enable_ino32;
        int              worm;
        int              mac_compat;
        int              fopen_keep_cache;
        int              gid_timeout;
        char             gid_timeout_set;
        int              aux_gfid_mount;
        struct list_head xlator_options;  /* list of xlator_option_t */

	/* fuse options */
	int              fuse_direct_io_mode;
	char             *use_readdirp;
        int              no_root_squash;
        int              volfile_check;
        double           fuse_entry_timeout;
        double           fuse_negative_timeout;
        double           fuse_attribute_timeout;
        char            *volume_name;
        int              fuse_nodev;
        int              fuse_nosuid;
        char            *dump_fuse;
        pid_t            client_pid;
        int              client_pid_set;
        unsigned         uid_map_root;
        int              background_qlen;
        int              congestion_threshold;
        char             *fuse_mountopts;

        /* key args */
        char            *mount_point;
        char            *volfile_id;

        /* required for portmap */
        int             brick_port;
        char           *brick_name;
        int             brick_port2;
};
typedef struct _cmd_args cmd_args_t;


struct _glusterfs_graph {
        struct list_head          list;
        char                      graph_uuid[128];
        struct timeval            dob;
        void                     *first;
        void                     *top;   /* selected by -n */
        int                       xl_count;
        int                       id;    /* Used in logging */
        int                       used;  /* Should be set when fuse gets
                                            first CHILD_UP */
        uint32_t                  volfile_checksum;
};
typedef struct _glusterfs_graph glusterfs_graph_t;


typedef int32_t (*glusterfsd_mgmt_event_notify_fn_t) (int32_t event, void *data,
                                                      ...);
struct _glusterfs_ctx {
        cmd_args_t          cmd_args;
        char               *process_uuid;
        FILE               *pidfp;
        char                fin;
        void               *timer;
        void               *ib;
        struct call_pool   *pool;
        void               *event_pool;
        void               *iobuf_pool;
        pthread_mutex_t     lock;
        size_t              page_size;
        struct list_head    graphs; /* double linked list of graphs - one per volfile parse */
        glusterfs_graph_t  *active; /* the latest graph in use */
        void               *master; /* fuse, or libglusterfsclient (however, not protocol/server) */
        void               *mgmt;   /* xlator implementing MOPs for centralized logging, volfile server */
        void               *listener; /* listener of the commands from glusterd */
        unsigned char       measure_latency; /* toggle switch for latency measurement */
        pthread_t           sigwaiter;
        struct mem_pool    *stub_mem_pool;
        unsigned char       cleanup_started;
        int                 graph_id; /* Incremented per graph, value should
                                         indicate how many times the graph has
                                         got changed */
        pid_t               mnt_pid; /* pid of the mount agent */
        int                 process_mode; /*mode in which process is runninng*/
        struct syncenv     *env;          /* The env pointer to the synctasks */

        struct list_head    mempool_list; /* used to keep a global list of
                                             mempools, used to log details of
                                             mempool in statedump */
        char               *statedump_path;

        struct mem_pool    *dict_pool;
        struct mem_pool    *dict_pair_pool;
        struct mem_pool    *dict_data_pool;

        glusterfsd_mgmt_event_notify_fn_t notify; /* Used for xlators to make
                                                     call to fsd-mgmt */
        gf_log_handle_t     log; /* all logging related variables */

        int                 mem_acct_enable;

        int                 daemon_pipe[2];

        struct clienttable *clienttable;
};
typedef struct _glusterfs_ctx glusterfs_ctx_t;

glusterfs_ctx_t *glusterfs_ctx_new (void);

typedef enum {
        GF_EVENT_PARENT_UP = 1,
        GF_EVENT_POLLIN,
        GF_EVENT_POLLOUT,
        GF_EVENT_POLLERR,
        GF_EVENT_CHILD_UP,
        GF_EVENT_CHILD_DOWN,
        GF_EVENT_CHILD_CONNECTING,
        GF_EVENT_CHILD_MODIFIED,
        GF_EVENT_TRANSPORT_CLEANUP,
        GF_EVENT_TRANSPORT_CONNECTED,
        GF_EVENT_VOLFILE_MODIFIED,
        GF_EVENT_GRAPH_NEW,
        GF_EVENT_TRANSLATOR_INFO,
        GF_EVENT_TRANSLATOR_OP,
        GF_EVENT_AUTH_FAILED,
        GF_EVENT_VOLUME_DEFRAG,
        GF_EVENT_PARENT_DOWN,
        GF_EVENT_VOLUME_BARRIER_OP,
        GF_EVENT_MAXVAL,
} glusterfs_event_t;

struct gf_flock {
        short        l_type;
        short        l_whence;
        off_t        l_start;
        off_t        l_len;
        pid_t        l_pid;
        gf_lkowner_t l_owner;
};

#define GF_MUST_CHECK __attribute__((warn_unused_result))
/*
 * Some macros (e.g. ALLOC_OR_GOTO) set variables in function scope, but the
 * calling function might not only declare the variable to keep the macro happy
 * and not use it otherwise.  In such cases, the following can be used to
 * suppress the "set but not used" warning that would otherwise occur.
 */
#define GF_UNUSED __attribute__((unused))

int glusterfs_graph_prepare (glusterfs_graph_t *graph, glusterfs_ctx_t *ctx);
int glusterfs_graph_destroy (glusterfs_graph_t *graph);
int glusterfs_graph_activate (glusterfs_graph_t *graph, glusterfs_ctx_t *ctx);
glusterfs_graph_t *glusterfs_graph_construct (FILE *fp);
glusterfs_graph_t *glusterfs_graph_new ();
int glusterfs_graph_reconfigure (glusterfs_graph_t *oldgraph,
                                  glusterfs_graph_t *newgraph);

#endif /* _GLUSTERFS_H */