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
|
// SPDX-License-Identifier: GPL-2.0
/*
* (C) 2001 Clemson University and The University of Chicago
*
* See COPYING in top-level directory.
*/
#include "protocol.h"
#include "orangefs-kernel.h"
/* tags assigned to kernel upcall operations */
static __u64 next_tag_value;
static DEFINE_SPINLOCK(next_tag_value_lock);
/* the orangefs memory caches */
/* a cache for orangefs upcall/downcall operations */
static struct kmem_cache *op_cache;
int op_cache_initialize(void)
{
op_cache = kmem_cache_create("orangefs_op_cache",
sizeof(struct orangefs_kernel_op_s),
0,
0,
NULL);
if (!op_cache) {
gossip_err("Cannot create orangefs_op_cache\n");
return -ENOMEM;
}
/* initialize our atomic tag counter */
spin_lock(&next_tag_value_lock);
next_tag_value = 100;
spin_unlock(&next_tag_value_lock);
return 0;
}
int op_cache_finalize(void)
{
kmem_cache_destroy(op_cache);
return 0;
}
char *get_opname_string(struct orangefs_kernel_op_s *new_op)
{
if (new_op) {
__s32 type = new_op->upcall.type;
if (type == ORANGEFS_VFS_OP_FILE_IO)
return "OP_FILE_IO";
else if (type == ORANGEFS_VFS_OP_LOOKUP)
return "OP_LOOKUP";
else if (type == ORANGEFS_VFS_OP_CREATE)
return "OP_CREATE";
else if (type == ORANGEFS_VFS_OP_GETATTR)
return "OP_GETATTR";
else if (type == ORANGEFS_VFS_OP_REMOVE)
return "OP_REMOVE";
else if (type == ORANGEFS_VFS_OP_MKDIR)
return "OP_MKDIR";
else if (type == ORANGEFS_VFS_OP_READDIR)
return "OP_READDIR";
else if (type == ORANGEFS_VFS_OP_READDIRPLUS)
return "OP_READDIRPLUS";
else if (type == ORANGEFS_VFS_OP_SETATTR)
return "OP_SETATTR";
else if (type == ORANGEFS_VFS_OP_SYMLINK)
return "OP_SYMLINK";
else if (type == ORANGEFS_VFS_OP_RENAME)
return "OP_RENAME";
else if (type == ORANGEFS_VFS_OP_STATFS)
return "OP_STATFS";
else if (type == ORANGEFS_VFS_OP_TRUNCATE)
return "OP_TRUNCATE";
else if (type == ORANGEFS_VFS_OP_RA_FLUSH)
return "OP_RA_FLUSH";
else if (type == ORANGEFS_VFS_OP_FS_MOUNT)
return "OP_FS_MOUNT";
else if (type == ORANGEFS_VFS_OP_FS_UMOUNT)
return "OP_FS_UMOUNT";
else if (type == ORANGEFS_VFS_OP_GETXATTR)
return "OP_GETXATTR";
else if (type == ORANGEFS_VFS_OP_SETXATTR)
return "OP_SETXATTR";
else if (type == ORANGEFS_VFS_OP_LISTXATTR)
return "OP_LISTXATTR";
else if (type == ORANGEFS_VFS_OP_REMOVEXATTR)
return "OP_REMOVEXATTR";
else if (type == ORANGEFS_VFS_OP_PARAM)
return "OP_PARAM";
else if (type == ORANGEFS_VFS_OP_PERF_COUNT)
return "OP_PERF_COUNT";
else if (type == ORANGEFS_VFS_OP_CANCEL)
return "OP_CANCEL";
else if (type == ORANGEFS_VFS_OP_FSYNC)
return "OP_FSYNC";
else if (type == ORANGEFS_VFS_OP_FSKEY)
return "OP_FSKEY";
else if (type == ORANGEFS_VFS_OP_FEATURES)
return "OP_FEATURES";
}
return "OP_UNKNOWN?";
}
void orangefs_new_tag(struct orangefs_kernel_op_s *op)
{
spin_lock(&next_tag_value_lock);
op->tag = next_tag_value++;
if (next_tag_value == 0)
next_tag_value = 100;
spin_unlock(&next_tag_value_lock);
}
struct orangefs_kernel_op_s *op_alloc(__s32 type)
{
struct orangefs_kernel_op_s *new_op = NULL;
new_op = kmem_cache_zalloc(op_cache, GFP_KERNEL);
if (new_op) {
INIT_LIST_HEAD(&new_op->list);
spin_lock_init(&new_op->lock);
init_completion(&new_op->waitq);
new_op->upcall.type = ORANGEFS_VFS_OP_INVALID;
new_op->downcall.type = ORANGEFS_VFS_OP_INVALID;
new_op->downcall.status = -1;
new_op->op_state = OP_VFS_STATE_UNKNOWN;
/* initialize the op specific tag and upcall credentials */
orangefs_new_tag(new_op);
new_op->upcall.type = type;
new_op->attempts = 0;
gossip_debug(GOSSIP_CACHE_DEBUG,
"Alloced OP (%p: %llu %s)\n",
new_op,
llu(new_op->tag),
get_opname_string(new_op));
new_op->upcall.uid = from_kuid(&init_user_ns,
current_fsuid());
new_op->upcall.gid = from_kgid(&init_user_ns,
current_fsgid());
} else {
gossip_err("op_alloc: kmem_cache_zalloc failed!\n");
}
return new_op;
}
void op_release(struct orangefs_kernel_op_s *orangefs_op)
{
if (orangefs_op) {
gossip_debug(GOSSIP_CACHE_DEBUG,
"Releasing OP (%p: %llu)\n",
orangefs_op,
llu(orangefs_op->tag));
kmem_cache_free(op_cache, orangefs_op);
} else {
gossip_err("NULL pointer in op_release\n");
}
}
|
