Mercurial > dovecot > core-2.2

annotate src/lib-storage/list/mailbox-list-index.h @ 21131:a93530968d51

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lib-storage: Fix invalid parents in LAYOUT=index Previously it just kept complaining without fixing the errors.
author Timo Sirainen <timo.sirainen@dovecot.fi>
date Wed, 16 Nov 2016 01:03:20 +0200
parents de3d25050d97
children 6bdcc7190a55
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #ifndef MAILBOX_LIST_INDEX_H
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2 #define MAILBOX_LIST_INDEX_H
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3
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4 /* Mailbox list index basically contains:
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5
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6 Header contains ID => name mapping. The name isn't the full mailbox name,
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7 but rather each hierarchy level has its own ID and name. For example a
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8 mailbox name "foo/bar" (with '/' as separator) would have separate IDs for
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9 "foo" and "bar" names.
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10
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11 The records contain { parent_uid, uid, name_id } field that can be used to
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12 build the whole mailbox tree. parent_uid=0 means root, otherwise it's the
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13 parent node's uid.
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14
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15 Each record also contains GUID for each selectable mailbox. If a mailbox
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16 is recreated using the same name, its GUID also changes. Note however that
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17 the UID doesn't change, because the UID refers to the mailbox name, not to
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18 the mailbox itself.
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19
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20 The records may contain also extensions for allowing mailbox_get_status()
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21 to return values directly from the mailbox list index. Storage backends
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22 may also add their own extensions to figure out if a record is up to date.
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23 */
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24
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25 #include "module-context.h"
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26 #include "mail-types.h"
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27 #include "mail-storage.h"
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28 #include "mailbox-list-private.h"
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29
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30 #include <sys/time.h>
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31
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32 #define MAILBOX_LIST_INDEX_HIERARHCY_SEP '~'
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33 #define MAILBOX_LIST_INDEX_PREFIX "dovecot.list.index"
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34
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35 #define INDEX_LIST_CONTEXT(obj) \
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36 MODULE_CONTEXT(obj, mailbox_list_index_module)
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37
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38 struct mail_index_view;
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39 struct mailbox_index_vsize;
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40
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41 /* stored in mail_index_record.flags: */
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42 enum mailbox_list_index_flags {
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43 MAILBOX_LIST_INDEX_FLAG_NONEXISTENT = MAIL_DELETED,
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44 MAILBOX_LIST_INDEX_FLAG_NOSELECT = MAIL_DRAFT,
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45 MAILBOX_LIST_INDEX_FLAG_NOINFERIORS = MAIL_ANSWERED,
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46
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47 /* set during syncing for mailboxes that still exist */
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48 MAILBOX_LIST_INDEX_FLAG_SYNC_EXISTS = MAIL_FLAGGED
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49 };
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50
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51 struct mailbox_list_index_header {
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52 uint8_t refresh_flag;
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53 /* array of { uint32_t id; char name[]; } */
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54 };
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55
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56 struct mailbox_list_index_record {
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57 /* points to given id in header */
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58 uint32_t name_id;
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59 /* parent mailbox's UID, 0 = root */
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60 uint32_t parent_uid;
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61
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62 /* the following fields are temporarily zero while unknown,
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63 also permanently zero for \NoSelect and \Nonexistent mailboxes: */
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64
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65 guid_128_t guid;
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66 uint32_t uid_validity;
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67 };
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68
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69 struct mailbox_list_index_msgs_record {
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70 uint32_t messages;
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71 uint32_t unseen;
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72 uint32_t recent;
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73 uint32_t uidnext;
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74 };
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75
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76 struct mailbox_list_index_node {
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77 struct mailbox_list_index_node *parent;
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78 struct mailbox_list_index_node *next;
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79 struct mailbox_list_index_node *children;
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80
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81 uint32_t name_id, uid;
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82 enum mailbox_list_index_flags flags;
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83 /* parent_uid is corrupted on disk - need to update it */
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84 bool corrupted_parent;
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85 const char *name;
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86 };
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87
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88 struct mailbox_list_index {
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89 union mailbox_list_module_context module_ctx;
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90
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91 const char *path;
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92 struct mail_index *index;
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93 uint32_t ext_id, msgs_ext_id, hmodseq_ext_id, subs_hdr_ext_id;
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94 uint32_t vsize_ext_id, first_saved_ext_id;
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95 struct timeval last_refresh_timeval;
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96
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97 pool_t mailbox_pool;
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98 /* uin32_t id => name */
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99 HASH_TABLE(void *, char *) mailbox_names;
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100 uint32_t highest_name_id;
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101
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102 struct mailbox_list_index_sync_context *sync_ctx;
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103 uint32_t sync_log_file_seq;
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104 uoff_t sync_log_file_offset;
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105 uint32_t sync_stamp;
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106 struct timeout *to_refresh;
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107
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108 /* uint32_t uid => node */
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109 HASH_TABLE(void *, struct mailbox_list_index_node *) mailbox_hash;
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110 struct mailbox_list_index_node *mailbox_tree;
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111
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112 unsigned int pending_init:1;
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113 unsigned int opened:1;
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114 unsigned int syncing:1;
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115 unsigned int updating_status:1;
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116 unsigned int has_backing_store:1;
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117 unsigned int index_last_check_changed:1;
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118 unsigned int corrupted:1;
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119 };
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120
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121 struct mailbox_list_index_iterate_context {
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122 struct mailbox_list_iterate_context ctx;
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123 struct mailbox_list_iterate_context *backend_ctx;
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124 pool_t mailbox_pool;
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125
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126 struct mailbox_info info;
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127 pool_t info_pool;
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128
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129 unsigned int parent_len;
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130 string_t *path;
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131 struct mailbox_list_index_node *next_node;
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132
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133 unsigned int failed:1;
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134 };
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135
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136 extern MODULE_CONTEXT_DEFINE(mailbox_list_index_module,
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137 &mailbox_list_module_register);
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138
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139 void mailbox_list_index_set_index_error(struct mailbox_list *list);
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140 struct mailbox_list_index_node *
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141 mailbox_list_index_lookup(struct mailbox_list *list, const char *name);
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142 struct mailbox_list_index_node *
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143 mailbox_list_index_lookup_uid(struct mailbox_list_index *ilist, uint32_t uid);
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144 void mailbox_list_index_node_get_path(const struct mailbox_list_index_node *node,
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145 char sep, string_t *str);
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146 void mailbox_list_index_node_unlink(struct mailbox_list_index *ilist,
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147 struct mailbox_list_index_node *node);
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148
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149 int mailbox_list_index_index_open(struct mailbox_list *list);
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150 bool mailbox_list_index_need_refresh(struct mailbox_list_index *ilist,
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151 struct mail_index_view *view);
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152 /* Refresh the index, but only if it hasn't been refreshed "recently"
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153 (= within this same ioloop run) */
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154 int mailbox_list_index_refresh(struct mailbox_list *list);
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155 /* Refresh the index regardless of when the last refresh was done. */
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156 int mailbox_list_index_refresh_force(struct mailbox_list *list);
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157 void mailbox_list_index_refresh_later(struct mailbox_list *list);
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158
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159 struct mailbox_list_index_node *
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160 mailbox_list_index_node_find_sibling(struct mailbox_list_index_node *node,
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161 const char *name);
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162 void mailbox_list_index_reset(struct mailbox_list_index *ilist);
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163 int mailbox_list_index_parse(struct mailbox_list *list,
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164 struct mail_index_view *view, bool force);
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165
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166 struct mailbox_list_iterate_context *
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167 mailbox_list_index_iter_init(struct mailbox_list *list,
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168 const char *const *patterns,
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169 enum mailbox_list_iter_flags flags);
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170 const struct mailbox_info *
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171 mailbox_list_index_iter_next(struct mailbox_list_iterate_context *ctx);
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172 int mailbox_list_index_iter_deinit(struct mailbox_list_iterate_context *ctx);
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173
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174 bool mailbox_list_index_status(struct mailbox_list *list,
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175 struct mail_index_view *view,
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176 uint32_t seq, enum mailbox_status_items items,
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177 struct mailbox_status *status_r,
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178 uint8_t *mailbox_guid,
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179 struct mailbox_index_vsize *vsize_r);
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180 void mailbox_list_index_status_set_info_flags(struct mailbox *box, uint32_t uid,
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181 enum mailbox_info_flags *flags);
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182 void mailbox_list_index_update_mailbox_index(struct mailbox *box,
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183 const struct mailbox_update *update);
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184
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185 int mailbox_list_index_notify_init(struct mailbox_list *list,
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186 enum mailbox_list_notify_event mask,
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187 struct mailbox_list_notify **notify_r);
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188 void mailbox_list_index_notify_deinit(struct mailbox_list_notify *notify);
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189 int mailbox_list_index_notify_next(struct mailbox_list_notify *notify,
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190 const struct mailbox_list_notify_rec **rec_r);
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191 void mailbox_list_index_notify_wait(struct mailbox_list_notify *notify,
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192 void (*callback)(void *context),
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193 void *context);
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194
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195 void mailbox_list_index_status_init_mailbox(struct mailbox *box);
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196 void mailbox_list_index_backend_init_mailbox(struct mailbox *box);
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197 void mailbox_list_index_status_init_finish(struct mailbox_list *list);
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198
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199 #endif