Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/lib-index/mail-cache-fields.c @ 4722:b0cf3e4d6c96 HEAD
If cache file contains broken field type or decision type mark the cache
corrupted instead of assert-crashing later.
author | Timo Sirainen <tss@iki.fi> |
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date | Thu, 02 Nov 2006 19:49:27 +0200 |
parents | 35d9433de1ca |
children | 7ebe0593f488 |
rev | line source |
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1 /* Copyright (C) 2004 Timo Sirainen */ |
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2 |
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3 #include "lib.h" |
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4 #include "buffer.h" |
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5 #include "hash.h" |
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6 #include "file-cache.h" |
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7 #include "write-full.h" |
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8 #include "mail-cache-private.h" |
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9 |
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10 #include <stddef.h> |
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11 |
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12 #define CACHE_HDR_PREFETCH 1024 |
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13 |
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14 static bool field_has_fixed_size(enum mail_cache_field_type type) |
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15 { |
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16 switch (type) { |
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17 case MAIL_CACHE_FIELD_FIXED_SIZE: |
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18 case MAIL_CACHE_FIELD_BITMASK: |
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19 return TRUE; |
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20 case MAIL_CACHE_FIELD_VARIABLE_SIZE: |
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21 case MAIL_CACHE_FIELD_STRING: |
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22 case MAIL_CACHE_FIELD_HEADER: |
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23 return FALSE; |
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24 |
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25 case MAIL_CACHE_FIELD_COUNT: |
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26 break; |
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27 } |
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28 |
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29 i_unreached(); |
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30 return FALSE; |
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31 } |
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32 |
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33 static bool field_decision_is_valid(enum mail_cache_decision_type type) |
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34 { |
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35 switch (type & ~MAIL_CACHE_DECISION_FORCED) { |
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36 case MAIL_CACHE_DECISION_NO: |
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37 case MAIL_CACHE_DECISION_TEMP: |
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38 case MAIL_CACHE_DECISION_YES: |
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39 return TRUE; |
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40 default: |
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41 return FALSE; |
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42 } |
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43 } |
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44 |
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45 static int field_type_verify(struct mail_cache *cache, unsigned int idx, |
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46 enum mail_cache_field_type type, unsigned int size) |
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47 { |
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48 const struct mail_cache_field *field = &cache->fields[idx].field; |
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49 |
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50 if (field->type != type) { |
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51 mail_cache_set_corrupted(cache, |
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52 "registered field %s type changed", field->name); |
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53 return -1; |
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54 } |
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55 if (field->field_size != size && field_has_fixed_size(type)) { |
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56 mail_cache_set_corrupted(cache, |
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57 "registered field %s size changed", field->name); |
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58 return -1; |
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59 } |
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60 return 0; |
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61 } |
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62 |
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63 void mail_cache_register_fields(struct mail_cache *cache, |
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64 struct mail_cache_field *fields, |
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65 unsigned int fields_count) |
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66 { |
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67 void *orig_key, *orig_value; |
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68 char *name; |
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69 unsigned int new_idx; |
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70 unsigned int i, j; |
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71 |
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72 new_idx = cache->fields_count; |
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73 for (i = 0; i < fields_count; i++) { |
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74 if (hash_lookup_full(cache->field_name_hash, fields[i].name, |
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75 &orig_key, &orig_value)) { |
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76 i_assert(fields[i].type < MAIL_CACHE_FIELD_COUNT); |
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77 |
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78 fields[i].idx = |
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79 POINTER_CAST_TO(orig_value, unsigned int); |
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80 (void)field_type_verify(cache, fields[i].idx, |
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81 fields[i].type, |
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82 fields[i].field_size); |
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83 continue; |
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84 } |
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85 |
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86 /* check if the same header is being registered in the |
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87 same field array */ |
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88 for (j = 0; j < i; j++) { |
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89 if (strcasecmp(fields[i].name, fields[j].name) == 0) { |
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90 fields[i].idx = fields[j].idx; |
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91 break; |
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92 } |
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93 } |
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94 |
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95 if (j == i) |
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96 fields[i].idx = new_idx++; |
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97 } |
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98 |
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99 if (new_idx == cache->fields_count) |
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100 return; |
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101 |
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102 /* @UNSAFE */ |
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103 cache->fields = i_realloc(cache->fields, |
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104 cache->fields_count * sizeof(*cache->fields), |
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105 new_idx * sizeof(*cache->fields)); |
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106 cache->field_file_map = |
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107 i_realloc(cache->field_file_map, |
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108 cache->fields_count * sizeof(*cache->field_file_map), |
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109 new_idx * sizeof(*cache->field_file_map)); |
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110 |
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111 for (i = 0; i < fields_count; i++) { |
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112 unsigned int idx = fields[i].idx; |
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113 |
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114 if (idx < cache->fields_count) |
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115 continue; |
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116 |
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|
117 /* new index - save it */ |
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While casting const pointers to something else, the const was often
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118 name = p_strdup(cache->field_pool, fields[i].name); |
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119 cache->fields[idx].field = fields[i]; |
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120 cache->fields[idx].field.name = name; |
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121 cache->field_file_map[idx] = (uint32_t)-1; |
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|
122 |
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When registering fields, if they were already exited in the cache file mark
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123 if (!field_has_fixed_size(cache->fields[idx].field.type)) |
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124 cache->fields[idx].field.field_size = (unsigned int)-1; |
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|
125 |
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126 hash_insert(cache->field_name_hash, name, POINTER_CAST(idx)); |
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127 } |
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128 cache->fields_count = new_idx; |
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129 } |
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Header caching redesigned. New design allows caching decisions per field, so
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130 |
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Header caching redesigned. New design allows caching decisions per field, so
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|
131 unsigned int |
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Header caching redesigned. New design allows caching decisions per field, so
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132 mail_cache_register_lookup(struct mail_cache *cache, const char *name) |
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Header caching redesigned. New design allows caching decisions per field, so
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133 { |
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134 void *orig_key, *orig_value; |
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135 |
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Header caching redesigned. New design allows caching decisions per field, so
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136 if (hash_lookup_full(cache->field_name_hash, name, |
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|
137 &orig_key, &orig_value)) |
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Header caching redesigned. New design allows caching decisions per field, so
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138 return POINTER_CAST_TO(orig_value, unsigned int); |
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Header caching redesigned. New design allows caching decisions per field, so
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|
139 else |
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|
140 return (unsigned int)-1; |
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141 } |
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142 |
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Added mail_cache_register_get_list() to get a list of all registered fields
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143 const struct mail_cache_field * |
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144 mail_cache_register_get_list(struct mail_cache *cache, pool_t pool, |
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145 unsigned int *count_r) |
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146 { |
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147 struct mail_cache_field *list; |
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Added mail_cache_register_get_list() to get a list of all registered fields
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148 unsigned int i; |
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149 |
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150 list = p_new(pool, struct mail_cache_field, cache->fields_count); |
3494
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mail_cache_register_get_list(): Allocate the returned strings also from
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151 for (i = 0; i < cache->fields_count; i++) { |
3461
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|
152 list[i] = cache->fields[i].field; |
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153 list[i].name = p_strdup(pool, list[i].name); |
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154 } |
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155 |
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|
156 *count_r = cache->fields_count; |
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157 return list; |
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158 } |
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|
159 |
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Header caching redesigned. New design allows caching decisions per field, so
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|
160 static int mail_cache_header_fields_get_offset(struct mail_cache *cache, |
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Header caching redesigned. New design allows caching decisions per field, so
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|
161 uint32_t *offset_r) |
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Header caching redesigned. New design allows caching decisions per field, so
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|
162 { |
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Header caching redesigned. New design allows caching decisions per field, so
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|
163 const struct mail_cache_header_fields *field_hdr; |
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|
164 uint32_t offset, next_offset; |
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Header caching redesigned. New design allows caching decisions per field, so
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|
165 |
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Header caching redesigned. New design allows caching decisions per field, so
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|
166 if (MAIL_CACHE_IS_UNUSABLE(cache)) { |
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Header caching redesigned. New design allows caching decisions per field, so
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|
167 *offset_r = 0; |
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Header caching redesigned. New design allows caching decisions per field, so
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|
168 return 0; |
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Header caching redesigned. New design allows caching decisions per field, so
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|
169 } |
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Header caching redesigned. New design allows caching decisions per field, so
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|
170 |
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Header caching redesigned. New design allows caching decisions per field, so
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|
171 /* find the latest header */ |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
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|
172 offset = 0; |
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Header caching redesigned. New design allows caching decisions per field, so
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|
173 next_offset = |
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fed6d07bd8ee
Transaction log file is now read-lockless.
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2362
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|
174 mail_index_offset_to_uint32(cache->hdr->field_header_offset); |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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|
175 while (next_offset != 0) { |
2339
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Cache fixes. Decisions are saved again.
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diff
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|
176 if (next_offset == offset) { |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
177 mail_cache_set_corrupted(cache, |
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Cache fixes. Decisions are saved again.
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diff
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|
178 "next_offset in field header loops"); |
406692edc12d
Cache fixes. Decisions are saved again.
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|
179 return -1; |
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Cache fixes. Decisions are saved again.
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|
180 } |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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|
181 offset = next_offset; |
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Header caching redesigned. New design allows caching decisions per field, so
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|
182 |
2867
d416b6d0a7ee
More correct file cache invalidating.
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2866
diff
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|
183 if (cache->file_cache != NULL) { |
d416b6d0a7ee
More correct file cache invalidating.
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|
184 /* we can't trust that the cached data is valid */ |
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More correct file cache invalidating.
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|
185 file_cache_invalidate(cache->file_cache, offset, |
d416b6d0a7ee
More correct file cache invalidating.
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2866
diff
changeset
|
186 sizeof(*field_hdr) + |
d416b6d0a7ee
More correct file cache invalidating.
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diff
changeset
|
187 CACHE_HDR_PREFETCH); |
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More correct file cache invalidating.
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diff
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|
188 } |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
189 if (mail_cache_map(cache, offset, |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
190 sizeof(*field_hdr) + CACHE_HDR_PREFETCH) < 0) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
191 return -1; |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
192 |
2866
bf1e718e7370
Cache file works now with mmap_disable=yes. Still needs a few optimizations.
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2708
diff
changeset
|
193 field_hdr = CONST_PTR_OFFSET(cache->data, offset); |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
194 next_offset = |
2407
fed6d07bd8ee
Transaction log file is now read-lockless.
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2362
diff
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|
195 mail_index_offset_to_uint32(field_hdr->next_offset); |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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diff
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|
196 } |
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Header caching redesigned. New design allows caching decisions per field, so
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|
197 |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
198 *offset_r = offset; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
199 return 0; |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
200 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
201 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
202 int mail_cache_header_fields_read(struct mail_cache *cache) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
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|
203 { |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
204 const struct mail_cache_header_fields *field_hdr = NULL; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
205 struct mail_cache_field field; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
206 const uint32_t *last_used, *sizes; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
207 const uint8_t *types, *decisions; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
208 const char *p, *names, *end; |
2339
406692edc12d
Cache fixes. Decisions are saved again.
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2327
diff
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|
209 void *orig_key, *orig_value; |
2327
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
210 uint32_t offset, i; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
211 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
212 if (mail_cache_header_fields_get_offset(cache, &offset) < 0) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
213 return -1; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
214 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
215 if (offset == 0) { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
216 /* no fields - the file is empty */ |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
217 return 0; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
218 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
219 |
2866
bf1e718e7370
Cache file works now with mmap_disable=yes. Still needs a few optimizations.
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2708
diff
changeset
|
220 field_hdr = CONST_PTR_OFFSET(cache->data, offset); |
2327
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
221 if (offset + field_hdr->size > cache->mmap_length) { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
222 mail_cache_set_corrupted(cache, |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
223 "field header points outside file"); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
224 return -1; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
225 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
226 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
227 /* check the fixed size of the header. name[] has to be checked |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
228 separately */ |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
229 if (field_hdr->size < sizeof(*field_hdr) + |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
230 field_hdr->fields_count * (sizeof(uint32_t)*2 + 1 + 2)) { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
231 mail_cache_set_corrupted(cache, "invalid field header size"); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
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diff
changeset
|
232 return -1; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
233 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
234 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
235 if (field_hdr->size > sizeof(*field_hdr) + CACHE_HDR_PREFETCH) { |
2867
d416b6d0a7ee
More correct file cache invalidating.
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diff
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236 if (cache->file_cache != NULL) { |
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More correct file cache invalidating.
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|
237 /* we can't trust that the cached data is valid */ |
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More correct file cache invalidating.
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|
238 file_cache_invalidate(cache->file_cache, offset, |
d416b6d0a7ee
More correct file cache invalidating.
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|
239 sizeof(*field_hdr) + |
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More correct file cache invalidating.
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diff
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|
240 CACHE_HDR_PREFETCH); |
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More correct file cache invalidating.
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|
241 } |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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|
242 if (mail_cache_map(cache, offset, field_hdr->size) < 0) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
243 return -1; |
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Header caching redesigned. New design allows caching decisions per field, so
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|
244 } |
2866
bf1e718e7370
Cache file works now with mmap_disable=yes. Still needs a few optimizations.
Timo Sirainen <tss@iki.fi>
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diff
changeset
|
245 field_hdr = CONST_PTR_OFFSET(cache->data, offset); |
2327
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246 |
4110
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Don't crash with "can't allocate 0 bytes of memory" if there are zero
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247 if (field_hdr->fields_count != 0) { |
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Don't crash with "can't allocate 0 bytes of memory" if there are zero
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248 cache->file_field_map = |
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Don't crash with "can't allocate 0 bytes of memory" if there are zero
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249 i_realloc(cache->file_field_map, |
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Don't crash with "can't allocate 0 bytes of memory" if there are zero
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250 cache->file_fields_count * |
9662de8fc649
Don't crash with "can't allocate 0 bytes of memory" if there are zero
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|
251 sizeof(unsigned int), |
9662de8fc649
Don't crash with "can't allocate 0 bytes of memory" if there are zero
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252 field_hdr->fields_count * |
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Don't crash with "can't allocate 0 bytes of memory" if there are zero
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253 sizeof(unsigned int)); |
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Don't crash with "can't allocate 0 bytes of memory" if there are zero
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254 } else { |
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255 i_free_and_null(cache->file_field_map); |
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|
256 } |
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257 cache->file_fields_count = field_hdr->fields_count; |
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258 |
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259 last_used = CONST_PTR_OFFSET(field_hdr, MAIL_CACHE_FIELD_LAST_USED()); |
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260 sizes = CONST_PTR_OFFSET(field_hdr, |
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261 MAIL_CACHE_FIELD_SIZE(field_hdr->fields_count)); |
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262 types = CONST_PTR_OFFSET(field_hdr, |
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263 MAIL_CACHE_FIELD_TYPE(field_hdr->fields_count)); |
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264 decisions = CONST_PTR_OFFSET(field_hdr, |
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Cache fixes. Decisions are saved again.
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265 MAIL_CACHE_FIELD_DECISION(field_hdr->fields_count)); |
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266 names = CONST_PTR_OFFSET(field_hdr, |
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267 MAIL_CACHE_FIELD_NAMES(field_hdr->fields_count)); |
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diff
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|
268 end = CONST_PTR_OFFSET(field_hdr, field_hdr->size); |
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Header caching redesigned. New design allows caching decisions per field, so
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|
269 |
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Header caching redesigned. New design allows caching decisions per field, so
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|
270 /* clear the old mapping */ |
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271 for (i = 0; i < cache->fields_count; i++) |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
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272 cache->field_file_map[i] = (uint32_t)-1; |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
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|
273 |
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
274 memset(&field, 0, sizeof(field)); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
275 for (i = 0; i < field_hdr->fields_count; i++) { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
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|
276 for (p = names; p != end && *p != '\0'; p++) ; |
2339
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Cache fixes. Decisions are saved again.
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277 if (p == end || *names == '\0') { |
2327
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diff
changeset
|
278 mail_cache_set_corrupted(cache, |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
279 "field header names corrupted"); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
280 return -1; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
281 } |
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Header caching redesigned. New design allows caching decisions per field, so
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|
282 |
4722
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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|
283 if (types[i] > MAIL_CACHE_FIELD_COUNT) { |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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diff
changeset
|
284 mail_cache_set_corrupted(cache, "field type corrupted"); |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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285 return -1; |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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changeset
|
286 } |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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diff
changeset
|
287 if (!field_decision_is_valid(decisions[i])) { |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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diff
changeset
|
288 mail_cache_set_corrupted(cache, |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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diff
changeset
|
289 "field decision type corrupted"); |
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If cache file contains broken field type or decision type mark the cache
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|
290 return -1; |
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If cache file contains broken field type or decision type mark the cache
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|
291 } |
b0cf3e4d6c96
If cache file contains broken field type or decision type mark the cache
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diff
changeset
|
292 |
2339
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293 if (hash_lookup_full(cache->field_name_hash, names, |
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Cache fixes. Decisions are saved again.
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294 &orig_key, &orig_value)) { |
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295 /* already exists, see if decision can be updated */ |
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|
296 field.idx = POINTER_CAST_TO(orig_value, unsigned int); |
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297 if (!cache->fields[field.idx].decision_dirty) { |
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|
298 cache->fields[field.idx].field.decision = |
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Cache fixes. Decisions are saved again.
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|
299 decisions[i]; |
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Cache fixes. Decisions are saved again.
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|
300 } |
4654
35d9433de1ca
When registering fields, if they were already exited in the cache file mark
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4345
diff
changeset
|
301 if (field_type_verify(cache, field.idx, |
35d9433de1ca
When registering fields, if they were already exited in the cache file mark
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4345
diff
changeset
|
302 types[i], sizes[i]) < 0) |
4345
f5d9c2b4d118
If cache field's size is wrong, rebuild the cache file instead of crashing
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4110
diff
changeset
|
303 return -1; |
2339
406692edc12d
Cache fixes. Decisions are saved again.
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|
304 } else { |
406692edc12d
Cache fixes. Decisions are saved again.
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|
305 field.name = names; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
306 field.type = types[i]; |
406692edc12d
Cache fixes. Decisions are saved again.
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changeset
|
307 field.field_size = sizes[i]; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
308 field.decision = decisions[i]; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
309 mail_cache_register_fields(cache, &field, 1); |
406692edc12d
Cache fixes. Decisions are saved again.
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|
310 } |
2968
2ab037df6cf3
Check for duplicate fields in header.
Timo Sirainen <tss@iki.fi>
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2929
diff
changeset
|
311 if (cache->field_file_map[field.idx] != (uint32_t)-1) { |
2ab037df6cf3
Check for duplicate fields in header.
Timo Sirainen <tss@iki.fi>
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2929
diff
changeset
|
312 mail_cache_set_corrupted(cache, |
2ab037df6cf3
Check for duplicate fields in header.
Timo Sirainen <tss@iki.fi>
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2929
diff
changeset
|
313 "Duplicated field in header: %s", names); |
2ab037df6cf3
Check for duplicate fields in header.
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2929
diff
changeset
|
314 return -1; |
2ab037df6cf3
Check for duplicate fields in header.
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diff
changeset
|
315 } |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
316 cache->field_file_map[field.idx] = i; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
317 cache->file_field_map[i] = field.idx; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
318 |
2339
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Cache fixes. Decisions are saved again.
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diff
changeset
|
319 /* update last_used if it's newer than ours */ |
2342 | 320 if (last_used[i] > cache->fields[field.idx].last_used) |
321 cache->fields[field.idx].last_used = last_used[i]; | |
2339
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
322 |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
323 names = p + 1; |
2327
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
324 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
325 return 0; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
326 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
327 |
2339
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Cache fixes. Decisions are saved again.
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diff
changeset
|
328 static void copy_to_buf(struct mail_cache *cache, buffer_t *dest, |
406692edc12d
Cache fixes. Decisions are saved again.
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changeset
|
329 size_t offset, size_t size) |
406692edc12d
Cache fixes. Decisions are saved again.
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|
330 { |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
331 const void *data; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
332 unsigned int i, field; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
333 |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
334 for (i = 0; i < cache->file_fields_count; i++) { |
406692edc12d
Cache fixes. Decisions are saved again.
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|
335 field = cache->file_field_map[i]; |
406692edc12d
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|
336 data = CONST_PTR_OFFSET(&cache->fields[field], offset); |
406692edc12d
Cache fixes. Decisions are saved again.
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337 buffer_append(dest, data, size); |
406692edc12d
Cache fixes. Decisions are saved again.
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|
338 } |
406692edc12d
Cache fixes. Decisions are saved again.
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|
339 for (i = 0; i < cache->fields_count; i++) { |
406692edc12d
Cache fixes. Decisions are saved again.
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|
340 if (cache->field_file_map[i] != (uint32_t)-1) |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
341 continue; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
342 data = CONST_PTR_OFFSET(&cache->fields[i], offset); |
406692edc12d
Cache fixes. Decisions are saved again.
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|
343 buffer_append(dest, data, size); |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
344 } |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
345 } |
406692edc12d
Cache fixes. Decisions are saved again.
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|
346 |
2342 | 347 static void copy_to_buf_byte(struct mail_cache *cache, buffer_t *dest, |
348 size_t offset) | |
349 { | |
350 const int *data; | |
351 unsigned int i, field; | |
352 uint8_t byte; | |
353 | |
354 for (i = 0; i < cache->file_fields_count; i++) { | |
355 field = cache->file_field_map[i]; | |
356 data = CONST_PTR_OFFSET(&cache->fields[field], offset); | |
357 byte = (uint8_t)*data; | |
358 buffer_append(dest, &byte, 1); | |
359 } | |
360 for (i = 0; i < cache->fields_count; i++) { | |
361 if (cache->field_file_map[i] != (uint32_t)-1) | |
362 continue; | |
363 data = CONST_PTR_OFFSET(&cache->fields[i], offset); | |
364 byte = (uint8_t)*data; | |
365 buffer_append(dest, &byte, 1); | |
366 } | |
367 } | |
368 | |
2929 | 369 static int mail_cache_header_fields_update_locked(struct mail_cache *cache) |
2327
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Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
370 { |
2339
406692edc12d
Cache fixes. Decisions are saved again.
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diff
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|
371 buffer_t *buffer; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
372 uint32_t i, offset; |
406692edc12d
Cache fixes. Decisions are saved again.
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diff
changeset
|
373 int ret = 0; |
2327
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
374 |
2339
406692edc12d
Cache fixes. Decisions are saved again.
Timo Sirainen <tss@iki.fi>
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375 if (mail_cache_header_fields_read(cache) < 0 || |
2929 | 376 mail_cache_header_fields_get_offset(cache, &offset) < 0) |
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377 return -1; |
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378 |
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379 t_push(); |
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Buffer API change: we no longer support limited sized buffers where
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380 buffer = buffer_create_dynamic(pool_datastack_create(), 256); |
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381 |
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382 copy_to_buf(cache, buffer, |
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383 offsetof(struct mail_cache_field_private, last_used), |
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Cache fixes. Decisions are saved again.
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384 sizeof(uint32_t)); |
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Whenever writing to cache file, also updated file_cache. Fixes problems with
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385 ret = mail_cache_write(cache, buffer->data, |
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Whenever writing to cache file, also updated file_cache. Fixes problems with
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386 sizeof(uint32_t) * cache->file_fields_count, |
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387 offset + MAIL_CACHE_FIELD_LAST_USED()); |
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388 if (ret == 0) { |
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389 buffer_set_used_size(buffer, 0); |
2342 | 390 copy_to_buf_byte(cache, buffer, |
391 offsetof(struct mail_cache_field, decision)); | |
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392 |
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Whenever writing to cache file, also updated file_cache. Fixes problems with
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393 ret = mail_cache_write(cache, buffer->data, |
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394 sizeof(uint8_t) * cache->file_fields_count, offset + |
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395 MAIL_CACHE_FIELD_DECISION(cache->file_fields_count)); |
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396 |
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397 if (ret == 0) { |
2592 | 398 for (i = 0; i < cache->file_fields_count; i++) |
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399 cache->fields[i].decision_dirty = FALSE; |
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400 } |
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401 } |
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402 t_pop(); |
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403 |
2867
d416b6d0a7ee
More correct file cache invalidating.
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404 if (ret == 0) |
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405 cache->field_header_write_pending = FALSE; |
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406 |
2929 | 407 return ret; |
408 } | |
409 | |
410 int mail_cache_header_fields_update(struct mail_cache *cache) | |
411 { | |
412 int ret; | |
413 | |
414 if (cache->locked) | |
415 return mail_cache_header_fields_update_locked(cache); | |
416 | |
417 if (mail_cache_lock(cache) <= 0) | |
418 return -1; | |
419 | |
420 ret = mail_cache_header_fields_update_locked(cache); | |
3627
c0e35566dd14
Unlocking cache file can also corrupt it since it modifies it. Added a
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421 if (mail_cache_unlock(cache) < 0) |
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422 ret = -1; |
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423 return ret; |
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424 } |
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Header caching redesigned. New design allows caching decisions per field, so
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425 |
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Header caching redesigned. New design allows caching decisions per field, so
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426 void mail_cache_header_fields_get(struct mail_cache *cache, buffer_t *dest) |
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Header caching redesigned. New design allows caching decisions per field, so
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427 { |
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428 struct mail_cache_header_fields hdr; |
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429 unsigned int field; |
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430 const char *name; |
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431 uint32_t i; |
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432 |
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433 memset(&hdr, 0, sizeof(hdr)); |
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434 hdr.fields_count = cache->fields_count; |
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435 buffer_append(dest, &hdr, sizeof(hdr)); |
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436 |
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437 /* we have to keep the field order for the existing fields. */ |
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438 copy_to_buf(cache, dest, |
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439 offsetof(struct mail_cache_field_private, last_used), |
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Cache fixes. Decisions are saved again.
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440 sizeof(uint32_t)); |
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441 copy_to_buf(cache, dest, offsetof(struct mail_cache_field, field_size), |
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Cache fixes. Decisions are saved again.
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442 sizeof(uint32_t)); |
2342 | 443 copy_to_buf_byte(cache, dest, offsetof(struct mail_cache_field, type)); |
444 copy_to_buf_byte(cache, dest, | |
445 offsetof(struct mail_cache_field, decision)); | |
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Cache fixes. Decisions are saved again.
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446 |
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447 i_assert(buffer_get_used_size(dest) == sizeof(hdr) + |
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Cache fixes. Decisions are saved again.
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448 (sizeof(uint32_t)*2 + 2) * hdr.fields_count); |
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449 |
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Header caching redesigned. New design allows caching decisions per field, so
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450 for (i = 0; i < cache->file_fields_count; i++) { |
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Header caching redesigned. New design allows caching decisions per field, so
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451 field = cache->file_field_map[i]; |
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452 name = cache->fields[field].field.name; |
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453 buffer_append(dest, name, strlen(name)+1); |
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Header caching redesigned. New design allows caching decisions per field, so
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454 } |
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Header caching redesigned. New design allows caching decisions per field, so
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|
455 for (i = 0; i < cache->fields_count; i++) { |
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Header caching redesigned. New design allows caching decisions per field, so
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456 if (cache->field_file_map[i] != (uint32_t)-1) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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457 continue; |
2339
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458 name = cache->fields[i].field.name; |
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Header caching redesigned. New design allows caching decisions per field, so
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459 buffer_append(dest, name, strlen(name)+1); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
460 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
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|
461 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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changeset
|
462 hdr.size = buffer_get_used_size(dest); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
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|
463 buffer_write(dest, 0, &hdr, sizeof(hdr)); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
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|
464 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
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|
465 if ((hdr.size & 3) != 0) |
3617
904849549eac
Removed null4 and replaced the few uses of it with buffer_append_zero().
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3494
diff
changeset
|
466 buffer_append_zero(dest, 4 - (hdr.size & 3)); |
2327
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
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|
467 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
468 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
469 int mail_cache_header_fields_get_next_offset(struct mail_cache *cache, |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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|
470 uint32_t *offset_r) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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diff
changeset
|
471 { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
472 if (mail_cache_header_fields_get_offset(cache, offset_r) < 0) |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
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|
473 return -1; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
474 |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
475 if (*offset_r == 0) { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
476 *offset_r = offsetof(struct mail_cache_header, |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
477 field_header_offset); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
478 } else { |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
479 *offset_r += offsetof(struct mail_cache_header_fields, |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
480 next_offset); |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
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|
481 } |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
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parents:
diff
changeset
|
482 return 0; |
7d02e2a7672d
Header caching redesigned. New design allows caching decisions per field, so
Timo Sirainen <tss@iki.fi>
parents:
diff
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|
483 } |