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
|
/*
Copyright (c) 2006-2012 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 _GF_FUSE_BRIDGE_H_
#define _GF_FUSE_BRIDGE_H_
#include <stdint.h>
#include <signal.h>
#include <pthread.h>
#include <stddef.h>
#include <dirent.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <fnmatch.h>
#include "glusterfs.h"
#include "logging.h"
#include "xlator.h"
#include "defaults.h"
#include "common-utils.h"
#include "statedump.h"
#ifdef GF_DARWIN_HOST_OS
#include "fuse_kernel_macfuse.h"
#else
#include "fuse_kernel.h"
#endif
#include "fuse-misc.h"
#include "fuse-mount.h"
#include "fuse-mem-types.h"
#include "list.h"
#include "dict.h"
#include "syncop.h"
#include "gidcache.h"
#if defined(GF_LINUX_HOST_OS) || defined(__FreeBSD__) || defined(__NetBSD__)
#define FUSE_OP_HIGH (FUSE_LSEEK + 1)
#endif
#ifdef GF_DARWIN_HOST_OS
#define FUSE_OP_HIGH (FUSE_DESTROY + 1)
#endif
#define GLUSTERFS_XATTR_LEN_MAX 65536
#define MAX_FUSE_PROC_DELAY 1
typedef struct fuse_in_header fuse_in_header_t;
typedef void (fuse_handler_t) (xlator_t *this, fuse_in_header_t *finh,
void *msg);
struct fuse_private {
int fd;
uint32_t proto_minor;
char *volfile;
size_t volfile_size;
char *mount_point;
struct iobuf *iobuf;
pthread_t fuse_thread;
char fuse_thread_started;
uint32_t direct_io_mode;
size_t *msg0_len_p;
double entry_timeout;
double negative_timeout;
double attribute_timeout;
pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
char event_recvd;
char init_recvd;
gf_boolean_t strict_volfile_check;
fuse_handler_t **fuse_ops;
fuse_handler_t **fuse_ops0;
pthread_mutex_t fuse_dump_mutex;
int fuse_dump_fd;
glusterfs_graph_t *next_graph;
xlator_t *active_subvol;
pid_t client_pid;
gf_boolean_t client_pid_set;
unsigned uid_map_root;
gf_boolean_t acl;
gf_boolean_t selinux;
gf_boolean_t read_only;
int32_t fopen_keep_cache;
int32_t gid_cache_timeout;
gf_boolean_t enable_ino32;
/* This is the mount option for disabling the root-squash for the
mount irrespective of whether the root-squash option for the
volume is set or not. But this option is honoured only for
thr trusted clients. For non trusted clients this value does
not have any affect and the volume option for root-squash is
honoured.
*/
gf_boolean_t no_root_squash;
fdtable_t *fdtable;
gid_cache_t gid_cache;
char *fuse_mountopts;
/* For fuse-reverse-validation */
struct list_head invalidate_list;
pthread_cond_t invalidate_cond;
pthread_mutex_t invalidate_mutex;
gf_boolean_t reverse_fuse_thread_started;
/* For communicating with separate mount thread. */
int status_pipe[2];
/* for fuse queue length and congestion threshold */
int background_qlen;
int congestion_threshold;
/* for using fuse-kernel readdirp*/
gf_boolean_t use_readdirp;
/* fini started, helps prevent multiple epoll worker threads
* firing up the fini routine */
gf_boolean_t fini_invoked;
/* resolve gid with getgrouplist() instead of /proc/%d/status */
gf_boolean_t resolve_gids;
/* Enable or disable capability support */
gf_boolean_t capability;
};
typedef struct fuse_private fuse_private_t;
#define INVAL_BUF_SIZE (sizeof (struct fuse_out_header) + \
max (sizeof (struct fuse_notify_inval_inode_out), \
sizeof (struct fuse_notify_inval_entry_out) + \
NAME_MAX + 1))
struct fuse_invalidate_node {
char inval_buf[INVAL_BUF_SIZE];
struct list_head next;
};
typedef struct fuse_invalidate_node fuse_invalidate_node_t;
struct fuse_graph_switch_args {
xlator_t *this;
xlator_t *old_subvol;
xlator_t *new_subvol;
};
typedef struct fuse_graph_switch_args fuse_graph_switch_args_t;
#define FUSE_EVENT_HISTORY_SIZE 1024
#define _FH_TO_FD(fh) ((fd_t *)(uintptr_t)(fh))
#define FH_TO_FD(fh) ((_FH_TO_FD (fh))?(fd_ref (_FH_TO_FD (fh))):((fd_t *) 0))
/* Use the same logic as the Linux NFS-client */
#define GF_FUSE_SQUASH_INO(ino) (((uint32_t) ino) ^ (ino >> 32))
#define FUSE_FOP(state, ret, op_num, fop, args ...) \
do { \
xlator_t *xl = NULL; \
call_frame_t *frame = NULL; \
\
xl = state->active_subvol; \
if (!xl) { \
gf_log_callingfn (state->this->name, GF_LOG_ERROR, \
"No active subvolume"); \
send_fuse_err (state->this, state->finh, ENOENT); \
free_fuse_state (state); \
break; \
} \
\
frame = get_call_frame_for_req (state); \
if (!frame) { \
/* This is not completely clean, as some \
* earlier allocations might remain unfreed \
* if we return at this point, but still \
* better than trying to go on with a NULL \
* frame ... \
*/ \
send_fuse_err (state->this, state->finh, ENOMEM); \
free_fuse_state (state); \
/* ideally, need to 'return', but let the */ \
/* calling function take care of it */ \
break; \
} \
\
frame->root->state = state; \
frame->root->op = op_num; \
frame->op = op_num; \
\
if (state->this->history) \
gf_log_eh ("%"PRIu64", %s, path: (%s), gfid: " \
"(%s)", frame->root->unique, \
gf_fop_list[frame->root->op], \
state->loc.path, \
(state->fd == NULL)? \
uuid_utoa (state->loc.gfid): \
uuid_utoa (state->fd->inode->gfid)); \
STACK_WIND (frame, ret, xl, xl->fops->fop, args); \
} while (0)
#define GF_SELECT_LOG_LEVEL(_errno) \
(((_errno == ENOENT) || (_errno == ESTALE))? \
GF_LOG_DEBUG)
#define GET_STATE(this, finh, state) \
do { \
state = get_fuse_state (this, finh); \
if (!state) { \
gf_log ("glusterfs-fuse", \
GF_LOG_ERROR, \
"FUSE message unique %"PRIu64" opcode %d:" \
" state allocation failed", \
finh->unique, finh->opcode); \
\
send_fuse_err (this, finh, ENOMEM); \
GF_FREE (finh); \
\
return; \
} \
} while (0)
#define FUSE_ENTRY_CREATE(this, priv, finh, state, fci, op) \
do { \
if (priv->proto_minor >= 12) \
state->mode &= ~fci->umask; \
if (priv->proto_minor >= 12 && priv->acl) { \
state->xdata = dict_new (); \
if (!state->xdata) { \
gf_log ("glusterfs-fuse", \
GF_LOG_WARNING, \
"%s failed to allocate " \
"a param dictionary", op); \
send_fuse_err (this, finh, ENOMEM); \
free_fuse_state (state); \
return; \
} \
state->umask = fci->umask; \
\
/* TODO: remove this after 3.4.0 release. keeping it for the \
sake of backward compatibility with old (3.3.[01]) \
releases till then. */ \
ret = dict_set_int16 (state->xdata, "umask", \
fci->umask); \
if (ret < 0) { \
gf_log ("glusterfs-fuse", \
GF_LOG_WARNING, \
"%s Failed adding umask"\
" to request", op); \
send_fuse_err (this, finh, ENOMEM); \
free_fuse_state (state); \
return; \
} \
ret = dict_set_int16 (state->xdata, "mode", \
fci->mode); \
if (ret < 0) { \
gf_log ("glusterfs-fuse", \
GF_LOG_WARNING, \
"%s Failed adding mode " \
"to request", op); \
send_fuse_err (this, finh, ENOMEM); \
free_fuse_state (state); \
return; \
} \
} \
} while (0)
#define fuse_log_eh_fop(this, state, frame, op_ret, op_errno) \
do { \
if (this->history) { \
if (state->fd) \
gf_log_eh ("op_ret: %d, op_errno: %d, " \
"%"PRIu64", %s () => %p, gfid: %s", \
op_ret, op_errno, \
frame->root->unique, \
gf_fop_list[frame->root->op], \
state->fd, \
uuid_utoa (state->fd->inode->gfid)); \
else \
gf_log_eh ("op_ret: %d, op_errno: %d, " \
"%"PRIu64", %s () => %s, gfid: %s", \
op_ret, op_errno, \
frame->root->unique, \
gf_fop_list[frame->root->op], \
state->loc.path, \
uuid_utoa (state->loc.gfid)); \
} \
} while(0)
#define fuse_log_eh(this, args...) \
do { \
if (this->history) \
gf_log_eh(args); \
} while (0)
static inline xlator_t *
fuse_active_subvol (xlator_t *fuse)
{
fuse_private_t *priv = NULL;
priv = fuse->private;
return priv->active_subvol;
}
typedef enum {
RESOLVE_MUST = 1,
RESOLVE_NOT,
RESOLVE_MAY,
RESOLVE_DONTCARE,
RESOLVE_EXACT
} fuse_resolve_type_t;
typedef struct {
fuse_resolve_type_t type;
fd_t *fd;
char *path;
char *bname;
u_char gfid[16];
inode_t *hint;
u_char pargfid[16];
inode_t *parhint;
int op_ret;
int op_errno;
loc_t resolve_loc;
} fuse_resolve_t;
typedef struct {
void *pool;
xlator_t *this;
xlator_t *active_subvol;
inode_table_t *itable;
loc_t loc;
loc_t loc2;
fuse_in_header_t *finh;
int32_t flags;
off_t off;
size_t size;
unsigned long nlookup;
fd_t *fd;
dict_t *xattr;
dict_t *xdata;
char *name;
char is_revalidate;
gf_boolean_t truncate_needed;
gf_lock_t lock;
uint64_t lk_owner;
/* used within resolve_and_resume */
/* */
fuse_resolve_t resolve;
fuse_resolve_t resolve2;
loc_t *loc_now;
fuse_resolve_t *resolve_now;
void *resume_fn;
int valid;
int mask;
dev_t rdev;
mode_t mode;
mode_t umask;
struct iatt attr;
struct gf_flock lk_lock;
struct iovec vector;
uuid_t gfid;
uint32_t io_flags;
int32_t fd_no;
gf_seek_what_t whence;
} fuse_state_t;
typedef struct {
uint32_t open_flags;
char migration_failed;
fd_t *activefd;
} fuse_fd_ctx_t;
typedef void (*fuse_resume_fn_t) (fuse_state_t *state);
GF_MUST_CHECK int32_t
fuse_loc_fill (loc_t *loc, fuse_state_t *state, ino_t ino,
ino_t par, const char *name);
call_frame_t *get_call_frame_for_req (fuse_state_t *state);
fuse_state_t *get_fuse_state (xlator_t *this, fuse_in_header_t *finh);
void free_fuse_state (fuse_state_t *state);
void gf_fuse_stat2attr (struct iatt *st, struct fuse_attr *fa,
gf_boolean_t enable_ino32);
void gf_fuse_fill_dirent (gf_dirent_t *entry, struct fuse_dirent *fde,
gf_boolean_t enable_ino32);
uint64_t inode_to_fuse_nodeid (inode_t *inode);
xlator_t *fuse_active_subvol (xlator_t *fuse);
inode_t *fuse_ino_to_inode (uint64_t ino, xlator_t *fuse);
int send_fuse_err (xlator_t *this, fuse_in_header_t *finh, int error);
int fuse_gfid_set (fuse_state_t *state);
int fuse_flip_xattr_ns (struct fuse_private *priv, char *okey, char **nkey);
fuse_fd_ctx_t * __fuse_fd_ctx_check_n_create (xlator_t *this, fd_t *fd);
fuse_fd_ctx_t * fuse_fd_ctx_check_n_create (xlator_t *this, fd_t *fd);
int fuse_resolve_and_resume (fuse_state_t *state, fuse_resume_fn_t fn);
int fuse_resolve_inode_init (fuse_state_t *state, fuse_resolve_t *resolve,
ino_t ino);
int fuse_resolve_entry_init (fuse_state_t *state, fuse_resolve_t *resolve,
ino_t par, char *name);
int fuse_resolve_fd_init (fuse_state_t *state, fuse_resolve_t *resolve,
fd_t *fd);
int fuse_ignore_xattr_set (fuse_private_t *priv, char *key);
void fuse_fop_resume (fuse_state_t *state);
int dump_history_fuse (circular_buffer_t *cb, void *data);
int fuse_check_selinux_cap_xattr (fuse_private_t *priv, char *name);
#endif /* _GF_FUSE_BRIDGE_H_ */
|
