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
|
/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */
/* Quota reporting based on simply summing sizes of all files in mailbox
together. */
#include "lib.h"
#include "array.h"
#include "str.h"
#include "quota-private.h"
#include <unistd.h>
#include <dirent.h>
#include <sys/stat.h>
struct quota_count_path {
const char *path;
bool is_file;
};
ARRAY_DEFINE_TYPE(quota_count_path, struct quota_count_path);
extern struct quota_backend quota_backend_dirsize;
static struct quota_root *dirsize_quota_alloc(void)
{
return i_new(struct quota_root, 1);
}
static int dirsize_quota_init(struct quota_root *root, const char *args,
const char **error_r)
{
root->auto_updating = TRUE;
event_set_append_log_prefix(root->backend.event, "quota-dirsize: ");
return quota_root_default_init(root, args, error_r);
}
static void dirsize_quota_deinit(struct quota_root *_root)
{
i_free(_root);
}
static const char *const *
dirsize_quota_root_get_resources(struct quota_root *root ATTR_UNUSED)
{
static const char *resources[] = { QUOTA_NAME_STORAGE_KILOBYTES, NULL };
return resources;
}
static int get_dir_usage(const char *dir, uint64_t *value,
const char **error_r)
{
DIR *dirp;
string_t *path;
struct dirent *d;
struct stat st;
unsigned int path_pos;
int ret;
dirp = opendir(dir);
if (dirp == NULL) {
if (errno == ENOENT)
return 0;
*error_r = t_strdup_printf("opendir(%s) failed: %m", dir);
return -1;
}
path = t_str_new(128);
str_append(path, dir);
str_append_c(path, '/');
path_pos = str_len(path);
ret = 0;
while ((d = readdir(dirp)) != NULL) {
if (d->d_name[0] == '.' &&
(d->d_name[1] == '\0' ||
(d->d_name[1] == '.' && d->d_name[2] == '\0'))) {
/* skip . and .. */
continue;
}
str_truncate(path, path_pos);
str_append(path, d->d_name);
if (lstat(str_c(path), &st) < 0) {
if (errno == ENOENT)
continue;
*error_r = t_strdup_printf("lstat(%s) failed: %m", dir);
ret = -1;
break;
} else if (S_ISDIR(st.st_mode)) {
if (get_dir_usage(str_c(path), value, error_r) < 0) {
ret = -1;
break;
}
} else {
*value += st.st_size;
}
}
(void)closedir(dirp);
return ret;
}
static int get_usage(const char *path, bool is_file, uint64_t *value_r,
const char **error_r)
{
struct stat st;
if (is_file) {
if (lstat(path, &st) < 0) {
if (errno == ENOENT)
return 0;
*error_r = t_strdup_printf("lstat(%s) failed: %m", path);
return -1;
}
*value_r += st.st_size;
} else {
if (get_dir_usage(path, value_r, error_r) < 0)
return -1;
}
return 0;
}
static void quota_count_path_add(ARRAY_TYPE(quota_count_path) *paths,
const char *path, bool is_file)
{
struct quota_count_path *count_path;
unsigned int i, count;
size_t path_len;
path_len = strlen(path);
count_path = array_get_modifiable(paths, &count);
for (i = 0; i < count; ) {
if (strncmp(count_path[i].path, path,
strlen(count_path[i].path)) == 0) {
/* this path has already been counted */
return;
}
if (strncmp(count_path[i].path, path, path_len) == 0 &&
count_path[i].path[path_len] == '/') {
/* the new path contains the existing path.
drop it and see if there are more to drop. */
array_delete(paths, i, 1);
count_path = array_get_modifiable(paths, &count);
} else {
i++;
}
}
count_path = array_append_space(paths);
count_path->path = t_strdup(path);
count_path->is_file = is_file;
}
static int
get_quota_root_usage(struct quota_root *root, uint64_t *value_r,
const char **error_r)
{
struct mail_namespace *const *namespaces;
ARRAY_TYPE(quota_count_path) paths;
const struct quota_count_path *count_paths;
unsigned int i, count;
const char *path;
bool is_file;
t_array_init(&paths, 8);
namespaces = array_get(&root->quota->namespaces, &count);
for (i = 0; i < count; i++) {
if (!quota_root_is_namespace_visible(root, namespaces[i]))
continue;
is_file = mail_storage_is_mailbox_file(namespaces[i]->storage);
if (mailbox_list_get_root_path(namespaces[i]->list,
MAILBOX_LIST_PATH_TYPE_DIR, &path))
quota_count_path_add(&paths, path, FALSE);
/* INBOX may be in different path. */
if (mailbox_list_get_path(namespaces[i]->list, "INBOX",
MAILBOX_LIST_PATH_TYPE_MAILBOX, &path) > 0)
quota_count_path_add(&paths, path, is_file);
}
/* now sum up the found paths */
*value_r = 0;
count_paths = array_get(&paths, &count);
for (i = 0; i < count; i++) {
if (get_usage(count_paths[i].path, count_paths[i].is_file,
value_r, error_r) < 0)
return -1;
}
return 0;
}
static enum quota_get_result
dirsize_quota_get_resource(struct quota_root *_root, const char *name,
uint64_t *value_r, const char **error_r)
{
int ret;
if (strcasecmp(name, QUOTA_NAME_STORAGE_BYTES) != 0) {
*error_r = QUOTA_UNKNOWN_RESOURCE_ERROR_STRING;
return QUOTA_GET_RESULT_UNKNOWN_RESOURCE;
}
ret = get_quota_root_usage(_root, value_r, error_r);
return ret < 0 ? QUOTA_GET_RESULT_INTERNAL_ERROR : QUOTA_GET_RESULT_LIMITED;
}
static int
dirsize_quota_update(struct quota_root *root ATTR_UNUSED,
struct quota_transaction_context *ctx ATTR_UNUSED,
const char **error_r ATTR_UNUSED)
{
return 0;
}
struct quota_backend quota_backend_dirsize = {
.name = "dirsize",
.v = {
.alloc = dirsize_quota_alloc,
.init = dirsize_quota_init,
.deinit = dirsize_quota_deinit,
.get_resources = dirsize_quota_root_get_resources,
.get_resource = dirsize_quota_get_resource,
.update = dirsize_quota_update,
}
};
|
