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
|
/*
Copyright (c) 2006-2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#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>
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif /* _CONFIG_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
/* This is MacFUSE's marker for MacFUSE-specific code */
#define __FreeBSD__ 10
#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"
/* TODO: when supporting posix acl, remove this definition */
#define DISABLE_POSIX_ACL
#ifdef GF_LINUX_HOST_OS
#define FUSE_OP_HIGH (FUSE_POLL + 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 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;
};
typedef struct fuse_private fuse_private_t;
#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))
#define FUSE_FOP(state, ret, op_num, fop, args ...) \
do { \
call_frame_t *frame = NULL; \
xlator_t *xl = NULL; \
\
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 ... \
*/ \
gf_log ("glusterfs-fuse", \
GF_LOG_ERROR, \
"FUSE message" \
" unique %"PRIu64" opcode %d:" \
" frame allocation failed", \
state->finh->unique, \
state->finh->opcode); \
free_fuse_state (state); \
return; \
} \
\
frame->root->state = state; \
frame->root->op = op_num; \
frame->op = op_num; \
\
xl = fuse_state_subvol (state); \
if (!xl) { \
gf_log ("glusterfs-fuse", GF_LOG_ERROR, \
"xl is NULL"); \
send_fuse_err (state->this, state->finh, ENOENT); \
free_fuse_state (state); \
STACK_DESTROY (frame->root); \
} else { \
STACK_WIND (frame, ret, xl, xl->fops->fop, args); \
} \
} while (0)
#define FUSE_FOP_COOKIE(state, xl, ret, cky, op_num, fop, args ...) \
do { \
call_frame_t *frame = NULL; \
\
frame = get_call_frame_for_req (state); \
if (!frame) { \
gf_log ("glusterfs-fuse", \
GF_LOG_ERROR, \
"FUSE message" \
" unique %"PRIu64" opcode %d:" \
" frame allocation failed", \
state->finh->unique, \
state->finh->opcode); \
free_fuse_state (state); \
return 0; \
} \
\
frame->root->state = state; \
frame->root->op = op_num; \
frame->op = op_num; \
STACK_WIND_COOKIE (frame, ret, cky, 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)
typedef enum {
RESOLVE_MUST = 1,
RESOLVE_NOT,
RESOLVE_MAY,
RESOLVE_DONTCARE,
RESOLVE_EXACT
} fuse_resolve_type_t;
struct fuse_resolve_comp {
char *basename;
ino_t ino;
uint64_t gen;
inode_t *inode;
};
typedef struct {
fuse_resolve_type_t type;
ino_t ino;
uint64_t gen;
ino_t par;
fd_t *fd;
char *path;
char *bname;
u_char gfid[16];
u_char pargfid[16];
char *resolved;
int op_ret;
int op_errno;
loc_t deep_loc;
struct fuse_resolve_comp *components;
int comp_count;
} fuse_resolve_t;
typedef struct {
void *pool;
xlator_t *this;
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 *dict;
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;
struct iatt attr;
struct gf_flock lk_lock;
struct iovec vector;
uuid_t gfid;
} fuse_state_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);
uint64_t inode_to_fuse_nodeid (inode_t *inode);
xlator_t *fuse_state_subvol (fuse_state_t *state);
xlator_t *fuse_active_subvol (xlator_t *fuse);
inode_t *fuse_ino_to_inode (uint64_t ino, xlator_t *fuse);
int fuse_resolve_and_resume (fuse_state_t *state, fuse_resume_fn_t fn);
int send_fuse_err (xlator_t *this, fuse_in_header_t *finh, int error);
int fuse_gfid_set (fuse_state_t *state);
#endif /* _GF_FUSE_BRIDGE_H_ */
|
