annotate src/plugins/trash/trash-plugin.c @ 5185:24f4a959a24c HEAD

Added <plugin_name>_version string.
author Timo Sirainen <tss@iki.fi>
date Thu, 22 Feb 2007 16:27:25 +0200
parents aa9b1fec1c21
children 9dd18b285223
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* Copyright (C) 2005 Timo Sirainen */
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2
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3 #include "lib.h"
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4 #include "array.h"
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5 #include "istream.h"
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6 #include "home-expand.h"
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7 #include "mail-search.h"
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8 #include "quota-private.h"
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9 #include "quota-plugin.h"
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10 #include "trash-plugin.h"
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11
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12 #include <stdlib.h>
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13 #include <unistd.h>
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14 #include <fcntl.h>
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15
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16 #define MAX_RETRY_COUNT 3
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17
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18 struct trash_mailbox {
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19 const char *name;
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20 int priority; /* lower number = higher priority */
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21
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22 struct mail_storage *storage;
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23
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24 /* temporarily set while cleaning: */
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25 struct mailbox *box;
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26 struct mailbox_transaction_context *trans;
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27 struct mail_search_arg search_arg;
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28 struct mail_search_context *search_ctx;
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29 struct mail *mail;
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30
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31 unsigned int mail_set:1;
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32 };
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33
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34 const char *trash_plugin_version = PACKAGE_VERSION;
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35
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36 static int (*trash_next_quota_test_alloc)(struct quota_transaction_context *,
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37 uoff_t, bool *);
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38
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39 static pool_t config_pool;
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40 /* trash_boxes ordered by priority, highest first */
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41 static ARRAY_DEFINE(trash_boxes, struct trash_mailbox);
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42
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43 static int sync_mailbox(struct mailbox *box)
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44 {
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45 struct mailbox_sync_context *ctx;
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46 struct mailbox_sync_rec sync_rec;
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47
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48 ctx = mailbox_sync_init(box, MAILBOX_SYNC_FLAG_FULL_READ);
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49 while (mailbox_sync_next(ctx, &sync_rec) > 0)
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50 ;
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51 return mailbox_sync_deinit(&ctx, 0, NULL);
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52 }
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53
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54 static int trash_clean_mailbox_open(struct trash_mailbox *trash)
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55 {
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56 trash->box = mailbox_open(trash->storage, trash->name, NULL,
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57 MAILBOX_OPEN_KEEP_RECENT);
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58 if (trash->box == NULL)
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59 return -1;
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60
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61 if (sync_mailbox(trash->box) < 0)
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62 return -1;
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63
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64 trash->trans = mailbox_transaction_begin(trash->box, 0);
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65
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66 trash->search_ctx = mailbox_search_init(trash->trans, NULL,
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67 &trash->search_arg, NULL);
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68 trash->mail = mail_alloc(trash->trans, MAIL_FETCH_PHYSICAL_SIZE |
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69 MAIL_FETCH_RECEIVED_DATE, NULL);
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70
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71 return mailbox_search_next(trash->search_ctx, trash->mail);
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72 }
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73
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74 static int trash_clean_mailbox_get_next(struct trash_mailbox *trash,
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75 time_t *received_time_r)
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76 {
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77 int ret;
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78
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79 if (!trash->mail_set) {
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80 if (trash->box == NULL)
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81 ret = trash_clean_mailbox_open(trash);
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82 else
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83 ret = mailbox_search_next(trash->search_ctx,
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84 trash->mail);
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85 if (ret <= 0)
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86 return ret;
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87
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88 trash->mail_set = TRUE;
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89 }
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90
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91 *received_time_r = mail_get_received_date(trash->mail);
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92 return 1;
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93 }
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94
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95 static int trash_try_clean_mails(struct quota_transaction_context *ctx,
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96 uint64_t size_needed)
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97 {
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98 struct trash_mailbox *trashes;
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99 unsigned int i, j, count, oldest_idx;
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100 time_t oldest, received;
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101 uint64_t size, size_expunged = 0, expunged_count = 0;
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102 int ret = 0;
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103
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104 trashes = array_get_modifiable(&trash_boxes, &count);
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105 for (i = 0; i < count; ) {
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106 if (trashes[i].storage == NULL) {
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107 /* FIXME: this is really ugly. it'll do however until
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108 we get proper namespace support for lib-storage. */
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109 struct mail_storage *const *storage;
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110
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111 storage = array_idx(&quota_set->storages, 0);
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112 trashes[i].storage = *storage;
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113 }
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114 /* expunge oldest mails first in all trash boxes with
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115 same priority */
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116 oldest_idx = count;
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117 oldest = (time_t)-1;
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118 for (j = i; j < count; j++) {
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119 if (trashes[j].priority != trashes[j].priority)
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120 break;
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121
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122 ret = trash_clean_mailbox_get_next(&trashes[i],
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123 &received);
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124 if (ret < 0)
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125 goto __err;
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126 if (ret > 0) {
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127 if (oldest == (time_t)-1 ||
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128 received < oldest) {
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129 oldest = received;
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130 oldest_idx = j;
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131 }
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132 }
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133 }
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134
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135 if (oldest_idx < count) {
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136 size = mail_get_physical_size(trashes[oldest_idx].mail);
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137 if (size == (uoff_t)-1) {
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138 /* maybe expunged already? */
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139 trashes[oldest_idx].mail_set = FALSE;
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140 continue;
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141 }
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142
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143 if (mail_expunge(trashes[oldest_idx].mail) < 0)
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144 break;
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145
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146 expunged_count++;
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147 size_expunged += size;
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148 if (size_expunged >= size_needed)
3738
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diff changeset
149 break;
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diff changeset
150 trashes[oldest_idx].mail_set = FALSE;
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diff changeset
151 } else {
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diff changeset
152 /* find more mails from next priority's mailbox */
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diff changeset
153 i = j;
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154 }
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155 }
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parents:
diff changeset
156
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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diff changeset
157 __err:
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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diff changeset
158 for (i = 0; i < count; i++) {
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diff changeset
159 struct trash_mailbox *trash = &trashes[i];
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diff changeset
160
5157
df22aec605b7 If trash mailbox couldn't be opened, don't crash later either.
Timo Sirainen <tss@iki.fi>
parents: 5147
diff changeset
161 if (trash->box == NULL)
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diff changeset
162 continue;
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diff changeset
163
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5fb199ed254a Trash plugin was completely broken before.
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164 trash->mail_set = FALSE;
3879
928229f8b3e6 deinit, unref, destroy, close, free, etc. functions now take a pointer to
Timo Sirainen <tss@iki.fi>
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diff changeset
165 mail_free(&trash->mail);
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166 (void)mailbox_search_deinit(&trash->search_ctx);
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167
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diff changeset
168 if (size_expunged >= size_needed) {
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diff changeset
169 (void)mailbox_transaction_commit(&trash->trans,
3738
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diff changeset
170 MAILBOX_SYNC_FLAG_FULL_WRITE);
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diff changeset
171 } else {
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diff changeset
172 /* couldn't get enough space, don't expunge anything */
3879
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diff changeset
173 mailbox_transaction_rollback(&trash->trans);
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174 }
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175
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176 mailbox_close(&trash->box);
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177 }
5158
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diff changeset
178
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diff changeset
179 if (size_expunged < size_needed)
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diff changeset
180 return FALSE;
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diff changeset
181
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Timo Sirainen <tss@iki.fi>
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diff changeset
182 ctx->bytes_used = ctx->bytes_used > (int64_t)size_expunged ?
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diff changeset
183 ctx->bytes_used - size_expunged : 0;
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diff changeset
184 ctx->count_used = ctx->count_used > (int64_t)expunged_count ?
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diff changeset
185 ctx->count_used - expunged_count : 0;
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diff changeset
186 return TRUE;
3738
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187 }
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188
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189 static int
4514
511f1f5c76fa Changes to make trash plugin working again.
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diff changeset
190 trash_quota_test_alloc(struct quota_transaction_context *ctx,
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diff changeset
191 uoff_t size, bool *too_large_r)
3738
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192 {
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diff changeset
193 int ret, i;
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diff changeset
194
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diff changeset
195 for (i = 0; ; i++) {
4514
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diff changeset
196 ret = trash_next_quota_test_alloc(ctx, size, too_large_r);
3738
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diff changeset
197 if (ret != 0 || *too_large_r)
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diff changeset
198 return ret;
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diff changeset
199
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parents:
diff changeset
200 if (i == MAX_RETRY_COUNT) {
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Timo Sirainen <tss@iki.fi>
parents:
diff changeset
201 /* trash_try_clean_mails() should have returned 0 if
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
202 it couldn't get enough space, but allow retrying
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Timo Sirainen <tss@iki.fi>
parents:
diff changeset
203 it a couple of times if there was some extra space
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parents:
diff changeset
204 that was needed.. */
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diff changeset
205 break;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
206 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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parents:
diff changeset
207
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
208 /* not enough space. try deleting some from mailbox. */
5158
aa9b1fec1c21 Although messages were expunged, the expunges weren't counted in that same
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parents: 5157
diff changeset
209 ret = trash_try_clean_mails(ctx, size);
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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diff changeset
210 if (ret <= 0)
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
211 return 0;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
212 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
213
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
214 return 0;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
215 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
216
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
217 static int trash_mailbox_priority_cmp(const void *p1, const void *p2)
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
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diff changeset
218 {
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
219 const struct trash_mailbox *t1 = p1, *t2 = p2;
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diff changeset
220
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
221 return t1->priority - t2->priority;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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parents:
diff changeset
222 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
223
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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parents:
diff changeset
224 static int read_configuration(const char *path)
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
225 {
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
226 struct istream *input;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
227 const char *line, *name;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
228 struct trash_mailbox *trash;
4602
444edc8abef9 Don't allow giving NULL parameter to array_get() or array_get_modifiable().
Timo Sirainen <tss@iki.fi>
parents: 4596
diff changeset
229 unsigned int count;
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
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diff changeset
230 int fd;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
231
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
232 fd = open(path, O_RDONLY);
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
233 if (fd == -1) {
4400
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
234 i_error("open(%s) failed: %m", path);
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
235 return -1;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
236 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
237
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
238 p_clear(config_pool);
4596
bf4e98a0de3f Replaced ARRAY_CREATE() macro with [ipt]_array_init() macros. The macro
Timo Sirainen <tss@iki.fi>
parents: 4594
diff changeset
239 p_array_init(&trash_boxes, config_pool, 8);
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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parents:
diff changeset
240
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
241 input = i_stream_create_file(fd, default_pool, (size_t)-1, FALSE);
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
242 while ((line = i_stream_read_next_line(input)) != NULL) {
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
243 /* <priority> <mailbox name> */
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
244 name = strchr(line, ' ');
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
245 if (name == NULL || name[1] == '\0')
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
246 continue;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
247
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
248 trash = array_append_space(&trash_boxes);
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
249 trash->name = p_strdup(config_pool, name+1);
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
250 trash->priority = atoi(t_strdup_until(line, name));
4748
5fb199ed254a Trash plugin was completely broken before.
Timo Sirainen <tss@iki.fi>
parents: 4602
diff changeset
251 trash->search_arg.type = SEARCH_ALL;
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
252 }
4070
71b8faa84ec6 Added i_stream_destroy() and o_stream_destroy() and used them instead of
Timo Sirainen <tss@iki.fi>
parents: 3879
diff changeset
253 i_stream_destroy(&input);
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
254 (void)close(fd);
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
255
4602
444edc8abef9 Don't allow giving NULL parameter to array_get() or array_get_modifiable().
Timo Sirainen <tss@iki.fi>
parents: 4596
diff changeset
256 trash = array_get_modifiable(&trash_boxes, &count);
444edc8abef9 Don't allow giving NULL parameter to array_get() or array_get_modifiable().
Timo Sirainen <tss@iki.fi>
parents: 4596
diff changeset
257 qsort(trash, count, sizeof(*trash), trash_mailbox_priority_cmp);
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
258 return 0;
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
259 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
260
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
261 void trash_plugin_init(void)
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
262 {
4400
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
263 const char *env;
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
264
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
265 env = getenv("TRASH");
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
266 if (env == NULL)
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
267 return;
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
268
4796
49c9e7588de4 s/quota/quota_set/ so we don't conflict with the quota symbol already
Timo Sirainen <tss@iki.fi>
parents: 4748
diff changeset
269 if (quota_set == NULL) {
4400
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
270 i_error("trash plugin: quota plugin not initialized");
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
271 return;
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
272 }
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
273
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
274 config_pool = pool_alloconly_create("trash config", 1024);
4400
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
275 if (read_configuration(env) < 0)
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
276 return;
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
277
4796
49c9e7588de4 s/quota/quota_set/ so we don't conflict with the quota symbol already
Timo Sirainen <tss@iki.fi>
parents: 4748
diff changeset
278 trash_next_quota_test_alloc = quota_set->test_alloc;
49c9e7588de4 s/quota/quota_set/ so we don't conflict with the quota symbol already
Timo Sirainen <tss@iki.fi>
parents: 4748
diff changeset
279 quota_set->test_alloc = trash_quota_test_alloc;
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
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parents:
diff changeset
280 }
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
281
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
282 void trash_plugin_deinit(void)
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
283 {
4796
49c9e7588de4 s/quota/quota_set/ so we don't conflict with the quota symbol already
Timo Sirainen <tss@iki.fi>
parents: 4748
diff changeset
284 quota_set->test_alloc = trash_next_quota_test_alloc;
4514
511f1f5c76fa Changes to make trash plugin working again.
Timo Sirainen <tss@iki.fi>
parents: 4451
diff changeset
285
4400
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
286 if (config_pool != NULL)
593523f53500 Removed hardcoded trash plugin configuration paths. Added information about
Timo Sirainen <tss@iki.fi>
parents: 4084
diff changeset
287 pool_unref(config_pool);
3738
732b62dc1976 Added beginnings of plugin infrastructure. TODO: These could be optionally
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
288 }