summaryrefslogtreecommitdiffstats
path: root/xlators/features/quota/src/quota.h
blob: 8c80e5e026bea2e679a3cd2e5950e704b4e7eb49 (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
/*
  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 _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include "xlator.h"
#include "call-stub.h"
#include "defaults.h"
#include "byte-order.h"
#include "common-utils.h"
#include "quota-mem-types.h"

#define QUOTA_XATTR_PREFIX      "trusted."
#define DIRTY                   "dirty"
#define SIZE                    "size"
#define CONTRIBUTION            "contri"
#define VAL_LENGTH              8
#define READDIR_BUF             4096

#define QUOTA_STACK_DESTROY(_frame, _this)              \
        do {                                            \
                quota_local_t *_local = NULL;           \
                _local = _frame->local;                 \
                _frame->local = NULL;                   \
                STACK_DESTROY (_frame->root);           \
                quota_local_cleanup (_this, _local);    \
                GF_FREE (_local);                       \
        } while (0)

#define QUOTA_SAFE_INCREMENT(lock, var)         \
        do {                                    \
                LOCK (lock);                    \
                var ++;                         \
                UNLOCK (lock);                  \
        } while (0)

#define QUOTA_SAFE_DECREMENT(lock, var)         \
        do {                                    \
                LOCK (lock);                    \
                var --;                         \
                UNLOCK (lock);                  \
        } while (0)

#define QUOTA_ALLOC_OR_GOTO(var, type, label)           \
        do {                                            \
                var = GF_CALLOC (sizeof (type), 1,      \
                                 gf_quota_mt_##type);   \
                if (!var) {                             \
                        gf_log ("", GF_LOG_ERROR,       \
                                "out of memory :(");    \
                        ret = -1;                       \
                        goto label;                     \
                }                                       \
        } while (0);

#define QUOTA_STACK_UNWIND(fop, frame, params...)                       \
        do {                                                            \
                quota_local_t *_local = NULL;                           \
                xlator_t      *_this  = NULL;                           \
                if (frame) {                                            \
                        _local = frame->local;                          \
                        _this  = frame->this;                           \
                        frame->local = NULL;                            \
                }                                                       \
                STACK_UNWIND_STRICT (fop, frame, params);               \
                quota_local_cleanup (_this, _local);                    \
                mem_put (_local);                                       \
        } while (0)

#define QUOTA_FREE_CONTRIBUTION_NODE(_contribution)     \
        do {                                            \
                list_del (&_contribution->contri_list); \
                GF_FREE (_contribution);                \
        } while (0)

#define GET_CONTRI_KEY(var, _vol_name, _gfid, _ret)             \
        do {                                                    \
                char _gfid_unparsed[40];                        \
                uuid_unparse (_gfid, _gfid_unparsed);           \
                _ret = gf_asprintf (var, QUOTA_XATTR_PREFIX     \
                                    "%s.%s." CONTRIBUTION,      \
                                    _vol_name, _gfid_unparsed); \
        } while (0)


#define GET_CONTRI_KEY_OR_GOTO(var, _vol_name, _gfid, label)    \
        do {                                                    \
                GET_CONTRI_KEY(var, _vol_name, _gfid, ret);     \
                if (ret == -1)                                  \
                        goto label;                             \
        } while (0)

#define GET_DIRTY_KEY_OR_GOTO(var, _vol_name, label)            \
        do {                                                    \
                ret = gf_asprintf (var, QUOTA_XATTR_PREFIX      \
                                   "%s." DIRTY, _vol_name);     \
                if (ret == -1)                                  \
                        goto label;                             \
        } while (0)

struct quota_dentry {
        char            *name;
        uuid_t           par;
        struct list_head next;
};
typedef struct quota_dentry quota_dentry_t;

struct quota_inode_ctx {
        int64_t          size;
        int64_t          limit;
        struct iatt      buf;
        struct list_head parents;
        struct timeval   tv;
        gf_lock_t        lock;
};
typedef struct quota_inode_ctx quota_inode_ctx_t;

struct quota_local {
        gf_lock_t    lock;
        uint32_t     validate_count;
        uint32_t     link_count;
        loc_t        loc;
        loc_t        oldloc;
        loc_t        newloc;
        loc_t        validate_loc;
        int64_t      delta;
        int32_t      op_ret;
        int32_t      op_errno;
        int64_t      size;
        int64_t      limit;
        char         just_validated;
        inode_t     *inode;
        call_stub_t *stub;
};
typedef struct quota_local quota_local_t;

struct quota_priv {
        int64_t           timeout;
        struct list_head  limit_head;
        gf_lock_t         lock;
};
typedef struct quota_priv quota_priv_t;

struct limits {
        struct list_head  limit_list;
        char             *path;
        int64_t           value;
        uuid_t            gfid;
};
typedef struct limits     limits_t;

uint64_t cn = 1;