Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/plugins/quota/quota-dirsize.c @ 7086:7ed926ed7aa4 HEAD

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Updated copyright notices to include year 2008.
author Timo Sirainen <tss@iki.fi>
date Tue, 01 Jan 2008 22:05:21 +0200
parents f622ddfb69b2
children e6693a0ec8e1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7086
7ed926ed7aa4 Updated copyright notices to include year 2008.
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1 /* Copyright (c) 2005-2008 Dovecot authors, see the included COPYING file */
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2
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3 /* Quota reporting based on simply summing sizes of all files in mailbox
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4 together. */
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5
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6 #include "lib.h"
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7 #include "array.h"
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8 #include "str.h"
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9 #include "quota-private.h"
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10
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11 #include <stdlib.h>
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12 #include <unistd.h>
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13 #include <dirent.h>
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14 #include <sys/stat.h>
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15
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16 struct quota_count_path {
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17 const char *path;
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18 bool is_file;
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19 };
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20 ARRAY_DEFINE_TYPE(quota_count_path, struct quota_count_path);
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21
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22 extern struct quota_backend quota_backend_dirsize;
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23
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24 static struct quota_root *dirsize_quota_alloc(void)
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25 {
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26 return i_new(struct quota_root, 1);
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27 }
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28
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29 static void dirsize_quota_deinit(struct quota_root *_root)
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30 {
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31 i_free(_root);
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32 }
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33
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34 static const char *const *
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35 dirsize_quota_root_get_resources(struct quota_root *root ATTR_UNUSED)
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36 {
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37 static const char *resources[] = { QUOTA_NAME_STORAGE_KILOBYTES, NULL };
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39 return resources;
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40 }
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41
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42 static int get_dir_usage(const char *dir, uint64_t *value)
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43 {
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44 DIR *dirp;
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45 string_t *path;
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46 struct dirent *d;
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47 struct stat st;
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48 unsigned int path_pos;
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49 int ret;
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50
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51 dirp = opendir(dir);
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52 if (dirp == NULL) {
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53 if (errno == ENOENT)
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54 return 0;
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55
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56 i_error("opendir(%s) failed: %m", dir);
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57 return -1;
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58 }
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59
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60 path = t_str_new(128);
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61 str_append(path, dir);
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62 str_append_c(path, '/');
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63 path_pos = str_len(path);
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64
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65 ret = 0;
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66 while ((d = readdir(dirp)) != NULL) {
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67 if (d->d_name[0] == '.' &&
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68 (d->d_name[1] == '\0' ||
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69 (d->d_name[1] == '.' && d->d_name[2] == '\0'))) {
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70 /* skip . and .. */
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71 continue;
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72 }
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73
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74 str_truncate(path, path_pos);
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75 str_append(path, d->d_name);
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76
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77 if (lstat(str_c(path), &st) < 0) {
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78 if (errno == ENOENT)
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79 continue;
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80
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81 i_error("lstat(%s) failed: %m", dir);
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82 ret = -1;
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83 break;
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84 } else if (S_ISDIR(st.st_mode)) {
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85 if (get_dir_usage(str_c(path), value) < 0) {
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86 ret = -1;
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87 break;
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88 }
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89 } else {
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90 *value += st.st_size;
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91 }
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92 }
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93
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94 (void)closedir(dirp);
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95 return ret;
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96 }
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97
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98 static int get_usage(const char *path, bool is_file, uint64_t *value_r)
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99 {
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100 struct stat st;
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101
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102 if (is_file) {
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103 if (lstat(path, &st) < 0) {
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104 if (errno == ENOENT)
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105 return 0;
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106
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107 i_error("lstat(%s) failed: %m", path);
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108 return -1;
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109 }
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110 *value_r += st.st_size;
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111 } else {
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112 if (get_dir_usage(path, value_r) < 0)
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113 return -1;
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114 }
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115 return 0;
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116 }
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117
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118 static void quota_count_path_add(ARRAY_TYPE(quota_count_path) *paths,
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119 const char *path, bool is_file)
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120 {
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121 struct quota_count_path *count_path;
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122 unsigned int i, count, path_len;
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123
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124 path_len = strlen(path);
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125 count_path = array_get_modifiable(paths, &count);
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126 for (i = 0; i < count; ) {
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127 if (strncmp(count_path[i].path, path,
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128 strlen(count_path[i].path)) == 0) {
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129 /* this path has already been counted */
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130 return;
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131 }
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132 if (strncmp(count_path[i].path, path, path_len) == 0 &&
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133 count_path[i].path[path_len] == '/') {
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134 /* the new path contains the existing path.
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135 drop it and see if there are more to drop. */
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136 array_delete(paths, i, 1);
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137 count_path = array_get_modifiable(paths, &count);
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138 } else {
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139 i++;
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140 }
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141 }
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142
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143 count_path = array_append_space(paths);
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144 count_path->path = t_strdup(path);
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145 count_path->is_file = is_file;
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146 }
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147
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148 static int
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149 get_quota_root_usage(struct quota_root *root, uint64_t *value_r)
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150 {
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151 struct mail_storage *const *storages;
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152 ARRAY_TYPE(quota_count_path) paths;
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153 const struct quota_count_path *count_paths;
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154 unsigned int i, count;
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155 const char *path;
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156 bool is_file;
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157
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158 t_array_init(&paths, 8);
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159 storages = array_get(&root->quota->storages, &count);
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160 for (i = 0; i < count; i++) {
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161 path = mail_storage_get_mailbox_path(storages[i], "", &is_file);
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162 quota_count_path_add(&paths, path, FALSE);
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163
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164 /* INBOX may be in different path. */
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165 path = mail_storage_get_mailbox_path(storages[i], "INBOX",
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166 &is_file);
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167 quota_count_path_add(&paths, path, is_file);
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168 }
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169
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170 /* now sum up the found paths */
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171 *value_r = 0;
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172 count_paths = array_get(&paths, &count);
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173 for (i = 0; i < count; i++) {
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174 if (get_usage(count_paths[i].path, count_paths[i].is_file,
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175 value_r) < 0)
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176 return -1;
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177 }
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178 return 0;
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179 }
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180
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181 static int
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182 dirsize_quota_get_resource(struct quota_root *_root, const char *name,
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183 uint64_t *value_r, uint64_t *limit ATTR_UNUSED)
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184 {
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185 int ret;
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186
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187 if (strcasecmp(name, QUOTA_NAME_STORAGE_BYTES) != 0)
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188 return 0;
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189
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190 T_FRAME(
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191 ret = get_quota_root_usage(_root, value_r);
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192 );
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193
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194 return ret < 0 ? -1 : 1;
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195 }
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196
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197 static int
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198 dirsize_quota_update(struct quota_root *root ATTR_UNUSED,
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199 struct quota_transaction_context *ctx ATTR_UNUSED)
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200 {
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201 return 0;
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202 }
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203
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204 struct quota_backend quota_backend_dirsize = {
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205 "dirsize",
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206
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207 {
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208 dirsize_quota_alloc,
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209 NULL,
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210 dirsize_quota_deinit,
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211 NULL,
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212 NULL,
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213 dirsize_quota_root_get_resources,
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214 dirsize_quota_get_resource,
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215 dirsize_quota_update
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216 }
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217 };