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
|
/*
Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.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 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef __LIBGLUSTERFSCLIENT_INTERNALS_H
#define __LIBGLUSTERFSCLIENT_INTERNALS_H
#include <glusterfs.h>
#include <logging.h>
#include <inode.h>
#include <pthread.h>
#include <stack.h>
#include <list.h>
#include <signal.h>
#include <call-stub.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <fd.h>
typedef void (*sighandler_t) (int);
typedef struct list_head list_head_t;
typedef struct libglusterfs_client_ctx {
glusterfs_ctx_t gf_ctx;
inode_table_t *itable;
pthread_t reply_thread;
call_pool_t pool;
uint32_t counter;
time_t lookup_timeout;
time_t stat_timeout;
}libglusterfs_client_ctx_t;
typedef struct signal_handler {
int signo;
sighandler_t handler;
list_head_t next;
}libgf_client_signal_handler_t ;
typedef struct {
pthread_mutex_t lock;
pthread_cond_t reply_cond;
call_stub_t *reply_stub;
char complete;
union {
struct {
char is_revalidate;
loc_t *loc;
int32_t size;
} lookup;
}fop;
}libgf_client_local_t;
#define LIBGF_STACK_WIND_AND_WAIT(frame, rfn, obj, fn, params ...) \
do { \
STACK_WIND (frame, rfn, obj, fn, params); \
pthread_mutex_lock (&local->lock); \
{ \
while (!local->complete) { \
pthread_cond_wait (&local->reply_cond, \
&local->lock); \
} \
} \
pthread_mutex_unlock (&local->lock); \
} while (0)
#define LIBGF_CLIENT_SIGNAL(signal_handler_list, signo, handler) \
do { \
libgf_client_signal_handler_t *libgf_handler = CALLOC (1, \
sizeof (*libgf_handler)); \
ERR_ABORT (libgf_handler); \
libgf_handler->signo = signo; \
libgf_handler->handler = signal (signo, handler); \
list_add (&libgf_handler->next, signal_handler_list); \
} while (0)
#define LIBGF_INSTALL_SIGNAL_HANDLERS(signal_handlers) \
do { \
INIT_LIST_HEAD (&signal_handlers); \
/* Handle SIGABORT and SIGSEGV */ \
LIBGF_CLIENT_SIGNAL (&signal_handlers, SIGSEGV, gf_print_trace); \
LIBGF_CLIENT_SIGNAL (&signal_handlers, SIGABRT, gf_print_trace); \
LIBGF_CLIENT_SIGNAL (&signal_handlers, SIGHUP, gf_log_logrotate); \
/* LIBGF_CLIENT_SIGNAL (SIGTERM, glusterfs_cleanup_and_exit); */ \
} while (0)
#define LIBGF_RESTORE_SIGNAL_HANDLERS(local) \
do { \
libgf_client_signal_handler_t *ptr = NULL, *tmp = NULL; \
list_for_each_entry_safe (ptr, tmp, &local->signal_handlers,\
next) { \
signal (ptr->signo, ptr->handler); \
FREE (ptr); \
} \
} while (0)
#define LIBGF_CLIENT_FOP_ASYNC(ctx, local, ret_fn, op, args ...) \
do { \
call_frame_t *frame = get_call_frame_for_req (ctx, 1); \
xlator_t *xl = frame->this->children ? \
frame->this->children->xlator : NULL; \
dict_t *refs = frame->root->req_refs; \
frame->root->state = ctx; \
frame->local = local; \
STACK_WIND (frame, ret_fn, xl, xl->fops->op, args); \
dict_unref (refs); \
} while (0)
#define LIBGF_CLIENT_FOP(ctx, stub, op, local, args ...) \
do { \
call_frame_t *frame = get_call_frame_for_req (ctx, 1); \
xlator_t *xl = frame->this->children ? \
frame->this->children->xlator : NULL; \
dict_t *refs = frame->root->req_refs; \
if (!local) { \
local = CALLOC (1, sizeof (*local)); \
} \
ERR_ABORT (local); \
frame->local = local; \
frame->root->state = ctx; \
pthread_cond_init (&local->reply_cond, NULL); \
pthread_mutex_init (&local->lock, NULL); \
LIBGF_STACK_WIND_AND_WAIT (frame, libgf_client_##op##_cbk, xl, \
xl->fops->op, args); \
dict_unref (refs); \
stub = local->reply_stub; \
FREE (frame->local); \
frame->local = NULL; \
STACK_DESTROY (frame->root); \
} while (0)
void
libgf_client_loc_wipe (loc_t *loc);
int32_t
libgf_client_loc_fill (loc_t *loc,
libglusterfs_client_ctx_t *ctx,
ino_t ino,
ino_t par,
const char *name);
int32_t
libgf_client_path_lookup (loc_t *loc,
libglusterfs_client_ctx_t *ctx,
char lookup_basename);
int32_t
libgf_client_lookup (libglusterfs_client_ctx_t *ctx,
loc_t *loc,
struct stat *stbuf,
dict_t **dict,
dict_t *xattr_req);
#endif
|
