0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include "lib.h"

16f816d3f3c32ae3351834253f52ddd0212bcbf3Timo Sirainen#include "array.h"

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include "buffer.h"

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen#include "hash.h"

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include "mmap-util.h"

89b548af722113acb5d63dfffb44423cb60f91e4Timo Sirainen#include "nfs-workarounds.h"

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen#include "read-full.h"

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include "write-full.h"

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include "mail-index-private.h"

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen#include "mail-index-sync-private.h"

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include "mail-transaction-log.h"

da5d50534cfca45d0aaaf0bdac17b287b4588809Timo Sirainen#include "mail-cache.h"

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include <stdio.h>

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include <stddef.h>

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen#include <time.h>

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen#include <sys/stat.h>

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

d6badc27cd6e8d3398877b6766cb0aaeef3a7800Timo Sirainenstatic int mail_index_try_open_only(struct mail_index *index);

d6badc27cd6e8d3398877b6766cb0aaeef3a7800Timo Sirainenstatic void mail_index_create_in_memory(struct mail_index *index,

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen const struct mail_index_header *hdr);

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainenstruct mail_index *mail_index_alloc(const char *dir, const char *prefix)

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen{

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen struct mail_index *index;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index = i_new(struct mail_index, 1);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->dir = i_strdup(dir);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->prefix = i_strdup(prefix);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->fd = -1;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->extension_pool = pool_alloconly_create("extension", 512);

024815ea2ffdda9ea79919f18e865663977f73eaTimo Sirainen ARRAY_CREATE(&index->extensions, index->extension_pool,

367c05967091a2cbfce59b7f274f55b1a0f9e8c9Timo Sirainen struct mail_index_registered_ext, 5);

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen ARRAY_CREATE(&index->sync_lost_handlers, default_pool,

26a8b7deb3a5b6f26f9c4d71538e1248f680e4beTimo Sirainen mail_index_sync_lost_handler_t *, 4);

26a8b7deb3a5b6f26f9c4d71538e1248f680e4beTimo Sirainen

d6badc27cd6e8d3398877b6766cb0aaeef3a7800Timo Sirainen index->mode = 0600;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->gid = (gid_t)-1;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen index->keywords_ext_id =

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen mail_index_ext_register(index, "keywords", 128, 2, 1);

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen index->keywords_pool = pool_alloconly_create("keywords", 512);

41e1c7380edda701719d8ce1fb4d465d2ec4c84dTimo Sirainen ARRAY_CREATE(&index->keywords, default_pool, const char *, 16);

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen index->keywords_hash =

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen hash_create(default_pool, index->keywords_pool, 0,

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen strcase_hash, (hash_cmp_callback_t *)strcasecmp);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return index;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen}

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainenvoid mail_index_free(struct mail_index **_index)

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen{

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen struct mail_index *index = *_index;

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen *_index = NULL;

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen mail_index_close(index);

ee246b46953e4b94b2f22e093373674fa9155500Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen hash_destroy(index->keywords_hash);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen pool_unref(index->extension_pool);

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen pool_unref(index->keywords_pool);

41e1c7380edda701719d8ce1fb4d465d2ec4c84dTimo Sirainen

ee246b46953e4b94b2f22e093373674fa9155500Timo Sirainen array_free(&index->sync_lost_handlers);

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen array_free(&index->keywords);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

7d7b5c98f086ffa8ac9c90f21db17748ca607202Timo Sirainen i_free(index->error);

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen i_free(index->dir);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen i_free(index->prefix);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen i_free(index);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen}

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainenvoid mail_index_set_permissions(struct mail_index *index,

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen mode_t mode, gid_t gid)

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainen{

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainen index->mode = mode & 0666;

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainen index->gid = gid;

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainen}

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainen

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainenuint32_t mail_index_ext_register(struct mail_index *index, const char *name,

20a802016205bbcafc90f164f769ea801f88d014Timo Sirainen uint32_t default_hdr_size,

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen uint16_t default_record_size,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen uint16_t default_record_align)

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen{

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen const struct mail_index_registered_ext *extensions;

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen struct mail_index_registered_ext rext;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen unsigned int i, ext_count;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen extensions = array_get(&index->extensions, &ext_count);

024815ea2ffdda9ea79919f18e865663977f73eaTimo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen /* see if it's already there */

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen for (i = 0; i < ext_count; i++) {

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen if (strcmp(extensions[i].name, name) == 0)

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen return i;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen }

024815ea2ffdda9ea79919f18e865663977f73eaTimo Sirainen

024815ea2ffdda9ea79919f18e865663977f73eaTimo Sirainen memset(&rext, 0, sizeof(rext));

1175f27441385a7011629f295f42708f9a3a4ffcTimo Sirainen rext.name = p_strdup(index->extension_pool, name);

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen rext.index_idx = ext_count;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen rext.hdr_size = default_hdr_size;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen rext.record_size = default_record_size;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen rext.record_align = default_record_align;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen array_append(&index->extensions, &rext, 1);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen return ext_count;

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen}

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainenvoid mail_index_register_expunge_handler(struct mail_index *index,

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen uint32_t ext_id,

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen mail_index_expunge_handler_t *cb)

59151b71059df1190acd75d8717ed04a7920c862Timo Sirainen{

da985034a708db2f61394b30d117050ae6829ee5Timo Sirainen struct mail_index_registered_ext *rext;

59151b71059df1190acd75d8717ed04a7920c862Timo Sirainen

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen rext = array_idx_modifyable(&index->extensions, ext_id);

de12ff295bb3d0873b4dced5840612cbacd635efTimo Sirainen i_assert(rext->expunge_handler == NULL);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen rext->expunge_handler = cb;

7d7b5c98f086ffa8ac9c90f21db17748ca607202Timo Sirainen}

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

de12ff295bb3d0873b4dced5840612cbacd635efTimo Sirainenvoid mail_index_unregister_expunge_handler(struct mail_index *index,

da985034a708db2f61394b30d117050ae6829ee5Timo Sirainen uint32_t ext_id)

da985034a708db2f61394b30d117050ae6829ee5Timo Sirainen{

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen struct mail_index_registered_ext *rext;

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen rext = array_idx_modifyable(&index->extensions, ext_id);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen i_assert(rext->expunge_handler != NULL);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

de12ff295bb3d0873b4dced5840612cbacd635efTimo Sirainen rext->expunge_handler = NULL;

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen}

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen

de12ff295bb3d0873b4dced5840612cbacd635efTimo Sirainenvoid mail_index_register_sync_handler(struct mail_index *index, uint32_t ext_id,

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen mail_index_sync_handler_t *cb,

de12ff295bb3d0873b4dced5840612cbacd635efTimo Sirainen enum mail_index_sync_handler_type type)

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen{

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen struct mail_index_registered_ext *rext;

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen

5626ae5e3316eced244adb6485c0927f1c7fdc41Timo Sirainen rext = array_idx_modifyable(&index->extensions, ext_id);

5626ae5e3316eced244adb6485c0927f1c7fdc41Timo Sirainen i_assert(rext->sync_handler.callback == NULL);

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen rext->sync_handler.callback = cb;

5626ae5e3316eced244adb6485c0927f1c7fdc41Timo Sirainen rext->sync_handler.type = type;

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen}

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainenvoid mail_index_unregister_sync_handler(struct mail_index *index,

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen uint32_t ext_id)

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen{

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen struct mail_index_registered_ext *rext;

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen rext = array_idx_modifyable(&index->extensions, ext_id);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen i_assert(rext->sync_handler.callback != NULL);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen rext->sync_handler.callback = NULL;

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen rext->sync_handler.type = 0;

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen}

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainenvoid mail_index_register_sync_lost_handler(struct mail_index *index,

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen mail_index_sync_lost_handler_t *cb)

c27f03fa8fd2ef4acd1db814fae7d90e0eb9d3aeTimo Sirainen{

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen array_append(&index->sync_lost_handlers, &cb, 1);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen}

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainenvoid mail_index_unregister_sync_lost_handler(struct mail_index *index,

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen mail_index_sync_lost_handler_t *cb)

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen{

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen mail_index_sync_lost_handler_t *const *handlers;

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen unsigned int i, count;

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen handlers = array_get(&index->sync_lost_handlers, &count);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen for (i = 0; i < count; i++) {

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen if (handlers[i] == cb) {

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen array_delete(&index->sync_lost_handlers, i, 1);

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen break;

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen }

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen }

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen}

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainenstatic void mail_index_map_init_extbufs(struct mail_index_map *map,

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen unsigned int initial_count)

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen{

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen#define EXTENSION_NAME_APPROX_LEN 20

519e0a461271843833a2b42626ad93f6e7ddc497Timo Sirainen size_t size;

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen if (map->extension_pool == NULL) {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen size = (sizeof(array_t) + BUFFER_APPROX_SIZE) * 2 +

367c05967091a2cbfce59b7f274f55b1a0f9e8c9Timo Sirainen initial_count * (EXTENSION_NAME_APPROX_LEN +

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen sizeof(struct mail_index_ext) +

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen sizeof(uint32_t));

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen map->extension_pool =

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen pool_alloconly_create("extensions",

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen nearest_power(size));

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen } else {

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen p_clear(map->extension_pool);

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen }

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen ARRAY_CREATE(&map->extensions, map->extension_pool,

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen struct mail_index_ext, initial_count);

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen ARRAY_CREATE(&map->ext_id_map, map->extension_pool,

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen uint32_t, initial_count);

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen}

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainenuint32_t mail_index_map_lookup_ext(struct mail_index_map *map, const char *name)

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen{

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen const struct mail_index_ext *extensions;

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen unsigned int i, size;

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen if (!array_is_created(&map->extensions))

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen return (uint32_t)-1;

003079baf8056c81c25162a176a89f9169cc374fTimo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen extensions = array_get(&map->extensions, &size);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen for (i = 0; i < size; i++) {

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen if (strcmp(extensions[i].name, name) == 0)

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen return i;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen }

1175f27441385a7011629f295f42708f9a3a4ffcTimo Sirainen return (uint32_t)-1;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen}

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainenmail_index_map_register_ext(struct mail_index *index,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen struct mail_index_map *map, const char *name,

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen uint32_t hdr_offset, uint32_t hdr_size,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen uint32_t record_offset, uint32_t record_size,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen uint32_t record_align, uint32_t reset_id)

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen{

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen struct mail_index_ext *ext;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen uint32_t idx, empty_idx = (uint32_t)-1;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen if (!array_is_created(&map->extensions)) {

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen mail_index_map_init_extbufs(map, 5);

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen idx = 0;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen } else {

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen idx = array_count(&map->extensions);

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen }

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen i_assert(mail_index_map_lookup_ext(map, name) == (uint32_t)-1);

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen ext = array_append_space(&map->extensions);

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen ext->name = p_strdup(map->extension_pool, name);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen ext->hdr_offset = hdr_offset;

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen ext->hdr_size = hdr_size;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen ext->record_offset = record_offset;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen ext->record_size = record_size;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen ext->record_align = record_align;

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen ext->reset_id = reset_id;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen ext->index_idx = mail_index_ext_register(index, name, hdr_size,

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen record_size, record_align);

1175f27441385a7011629f295f42708f9a3a4ffcTimo Sirainen

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen /* Update index ext_id -> map ext_id mapping. Fill non-used

053843989f13d9013b265fb401a4bde7e0e6568eTimo Sirainen while (array_count(&map->ext_id_map) < ext->index_idx)

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen array_append(&map->ext_id_map, &empty_idx, 1);

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen array_idx_set(&map->ext_id_map, ext->index_idx, &idx);

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen return idx;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen}

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainenstatic bool size_check(size_t *size_left, size_t size)

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen{

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (size > *size_left)

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen return FALSE;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen *size_left -= size;

ab286a8b58306eb8d22fc18342b6c199fd428e1eTimo Sirainen return TRUE;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen}

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainenstatic size_t get_align(size_t name_len)

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen{

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen size_t size = sizeof(struct mail_index_ext_header) + name_len;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen return MAIL_INDEX_HEADER_SIZE_ALIGN(size) - size;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen}

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainenstatic int mail_index_parse_extensions(struct mail_index *index,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen struct mail_index_map *map)

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen{

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen const struct mail_index_ext_header *ext_hdr;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen unsigned int i, old_count;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen const char *name;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen uint32_t ext_id, offset, name_offset;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen size_t size_left;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen /* extension headers always start from 64bit offsets, so if base header

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen offset = MAIL_INDEX_HEADER_SIZE_ALIGN(map->hdr.base_header_size);

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen if (offset >= map->hdr.header_size && map->extension_pool == NULL) {

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen /* nothing to do, skip allocatations and all */

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen return 1;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen old_count = array_count(&index->extensions);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen mail_index_map_init_extbufs(map, old_count + 5);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen ext_id = (uint32_t)-1;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen for (i = 0; i < old_count; i++)

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen array_append(&map->ext_id_map, &ext_id, 1);

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen while (offset < map->hdr.header_size) {

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen ext_hdr = CONST_PTR_OFFSET(map->hdr_base, offset);

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen /* Extension header contains:

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen size_left = map->hdr.header_size - offset;

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen if (!size_check(&size_left, sizeof(*ext_hdr)) ||

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen !size_check(&size_left, ext_hdr->name_size) ||

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen !size_check(&size_left, get_align(ext_hdr->name_size)) ||

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen !size_check(&size_left, ext_hdr->hdr_size)) {

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen "Header extension goes outside header",

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen index->filepath);

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen return -1;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen }

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen offset += sizeof(*ext_hdr);

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen name_offset = offset;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen offset += ext_hdr->name_size + get_align(ext_hdr->name_size);

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen t_push();

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen name = t_strndup(CONST_PTR_OFFSET(map->hdr_base, name_offset),

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen ext_hdr->name_size);

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (mail_index_map_lookup_ext(map, name) != (uint32_t)-1) {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen "Duplicate header extension %s",

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen index->filepath, name);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen t_pop();

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen return -1;

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen }

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen if ((ext_hdr->record_offset % ext_hdr->record_align) != 0 ||

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen (map->hdr.record_size % ext_hdr->record_align) != 0) {

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen "Record field %s alignmentation %u not used",

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen index->filepath, name, ext_hdr->record_align);

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen t_pop();

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen return -1;

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen }

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen mail_index_map_register_ext(index, map, name,

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen offset, ext_hdr->hdr_size,

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen ext_hdr->record_offset,

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen ext_hdr->record_size,

b79ec51bdeef6ef950eb5e890e65cc0491cf5fe9Timo Sirainen ext_hdr->record_align,

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen ext_hdr->reset_id);

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen t_pop();

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen offset += MAIL_INDEX_HEADER_SIZE_ALIGN(ext_hdr->hdr_size);

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen }

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen return 1;

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen}

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainen

64541374b58e4c702b1926e87df421d180ffa006Timo Sirainenbool mail_index_keyword_lookup(struct mail_index *index,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen const char *keyword, bool autocreate,

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen unsigned int *idx_r)

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen{

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen char *keyword_dup;

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen void *value;

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen /* keywords_hash keeps a name => index mapping of keywords.

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (hash_lookup_full(index->keywords_hash, keyword, NULL, &value)) {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen *idx_r = POINTER_CAST_TO(value, unsigned int);

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen return TRUE;

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen }

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen if (!autocreate) {

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen *idx_r = (unsigned int)-1;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return FALSE;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen }

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen keyword = keyword_dup = p_strdup(index->keywords_pool, keyword);

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen *idx_r = array_count(&index->keywords);

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen hash_insert(index->keywords_hash, keyword_dup, POINTER_CAST(*idx_r));

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen array_append(&index->keywords, &keyword, 1);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return TRUE;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen}

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainenint mail_index_map_parse_keywords(struct mail_index *index,

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen struct mail_index_map *map)

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen{

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen const struct mail_index_ext *ext;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen const struct mail_index_keyword_header *kw_hdr;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen const struct mail_index_keyword_header_rec *kw_rec;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen const char *name;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen unsigned int i, name_area_end_offset, old_count;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen uint32_t ext_id;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen ext_id = mail_index_map_lookup_ext(map, "keywords");

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen if (ext_id == (uint32_t)-1) {

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen if (array_is_created(&map->keyword_idx_map))

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen array_clear(&map->keyword_idx_map);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen return 0;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen ext = array_idx(&map->extensions, ext_id);

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen /* Extension header contains:

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen i_assert(ext->hdr_offset < map->hdr.header_size);

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen kw_hdr = CONST_PTR_OFFSET(map->hdr_base, ext->hdr_offset);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen kw_rec = (const void *)(kw_hdr + 1);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen name = (const char *)(kw_rec + kw_hdr->keywords_count);

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen old_count = !array_is_created(&map->keyword_idx_map) ? 0 :

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen array_count(&map->keyword_idx_map);

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen /* Keywords can only be added into same mapping. Removing requires a

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen if (kw_hdr->keywords_count == old_count) {

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen /* nothing changed */

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen return 0;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen }

b4931fc08faa0079f32f29286f4c3abd0d8788bcTimo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen /* make sure the header is valid */

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen if (kw_hdr->keywords_count < old_count) {

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen "Keywords removed unexpectedly",

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen index->filepath);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return -1;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen }

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen if ((size_t)(name - (const char *)kw_hdr) > ext->hdr_size) {

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen "keywords_count larger than header size",

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen index->filepath);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return -1;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen }

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen name_area_end_offset = (const char *)kw_hdr + ext->hdr_size - name;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen for (i = 0; i < kw_hdr->keywords_count; i++) {

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen if (kw_rec[i].name_offset > name_area_end_offset) {

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen "name_offset points outside allocated header",

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen index->filepath);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return -1;

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen }

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen }

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen if (name[name_area_end_offset-1] != '\0') {

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen "Keyword header doesn't end with NUL",

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen index->filepath);

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen return -1;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen }

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen /* create file -> index mapping */

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen if (!array_is_created(&map->keyword_idx_map)) {

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen ARRAY_CREATE(&map->keyword_idx_map, default_pool,

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen unsigned int, kw_hdr->keywords_count);

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen }

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen#ifdef DEBUG

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen /* Check that existing headers are still the same. It's behind DEBUG

871c7b8969e8627dc4c8b3e56fd126f948e6bce6Timo Sirainen for (i = 0; i < array_count(&map->keyword_idx_map); i++) {

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen const char *keyword = name + kw_rec[i].name_offset;

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen const unsigned int *old_idx;

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen unsigned int idx;

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen old_idx = array_idx(&map->keyword_idx_map, i);

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen if (!mail_index_keyword_lookup(index, keyword, FALSE, &idx) ||

91dca97b367c54a139c268b56a0c67f564bd9197Timo Sirainen idx != *old_idx) {

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen "Keywords changed unexpectedly",

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen index->filepath);

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen return -1;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen }

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen }

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen#endif

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen /* Register the newly seen keywords */

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen i = array_count(&map->keyword_idx_map);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen for (; i < kw_hdr->keywords_count; i++) {

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen const char *keyword = name + kw_rec[i].name_offset;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen unsigned int idx;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen (void)mail_index_keyword_lookup(index, keyword, TRUE, &idx);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen array_append(&map->keyword_idx_map, &idx, 1);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen }

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return 0;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen}

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainenconst array_t *mail_index_get_keywords(struct mail_index *index)

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen{

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen /* Make sure all the keywords are in index->keywords. It's quick to do

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen (void)mail_index_map_parse_keywords(index, index->map);

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen return &index->keywords;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen}

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainenstatic int mail_index_check_header(struct mail_index *index,

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen struct mail_index_map *map)

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen{

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen const struct mail_index_header *hdr = &map->hdr;

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen enum mail_index_header_compat_flags compat_flags = 0;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen#ifndef WORDS_BIGENDIAN

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen compat_flags |= MAIL_INDEX_COMPAT_LITTLE_ENDIAN;

6a04c5112961c5f4fb2d2f25192b3dc424d62ad0Timo Sirainen#endif

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen if (hdr->major_version != MAIL_INDEX_MAJOR_VERSION) {

16c89b1260c9d07c01c83a9219424d3727069b2eTimo Sirainen /* major version change - handle silently(?) */

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return -1;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen }

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (hdr->compat_flags != compat_flags) {

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen /* architecture change - handle silently(?) */

811f2e26d9782d9cb99fdf82e18ffa0a77564fe2Timo Sirainen return -1;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen }

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

811f2e26d9782d9cb99fdf82e18ffa0a77564fe2Timo Sirainen if ((map->hdr.flags & MAIL_INDEX_HDR_FLAG_CORRUPTED) != 0) {

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen /* we've already complained about it */

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return -1;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen }

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen /* following some extra checks that only take a bit of CPU */

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (hdr->uid_validity == 0 && hdr->next_uid != 1) {

811f2e26d9782d9cb99fdf82e18ffa0a77564fe2Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen "uid_validity = 0, next_uid = %u",

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->filepath, hdr->next_uid);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return -1;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen }

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

8830fab191cab8440281eb641dfdd93974b2933bTimo Sirainen if (hdr->record_size < sizeof(struct mail_index_record)) {

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen "record_size too small: %u < %"PRIuSIZE_T,

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->filepath, hdr->record_size,

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen sizeof(struct mail_index_record));

92888ef30960c30ccc9e030fe7eab5d4d04a7d1cTimo Sirainen return -1;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen }

92888ef30960c30ccc9e030fe7eab5d4d04a7d1cTimo Sirainen

92888ef30960c30ccc9e030fe7eab5d4d04a7d1cTimo Sirainen if ((hdr->flags & MAIL_INDEX_HDR_FLAG_FSCK) != 0)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return 0;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (hdr->next_uid == 0)

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen return 0;

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen if (hdr->recent_messages_count > hdr->messages_count ||

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen hdr->seen_messages_count > hdr->messages_count ||

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen hdr->deleted_messages_count > hdr->messages_count)

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen return 0;

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen if (hdr->first_recent_uid_lowwater > hdr->next_uid ||

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen hdr->first_unseen_uid_lowwater > hdr->next_uid ||

e12648867876aaec17e06ee4caef0bb60363449dTimo Sirainen hdr->first_deleted_uid_lowwater > hdr->next_uid)

e12648867876aaec17e06ee4caef0bb60363449dTimo Sirainen return 0;

e12648867876aaec17e06ee4caef0bb60363449dTimo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return mail_index_parse_extensions(index, map);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen}

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

d482b35af87f5fd872bad007da0475813a401a49Timo Sirainenstatic void mail_index_map_clear(struct mail_index *index,

d482b35af87f5fd872bad007da0475813a401a49Timo Sirainen struct mail_index_map *map)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen{

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (map->buffer != NULL) {

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen i_assert(map->mmap_base == NULL);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen buffer_free(map->buffer);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen map->buffer = NULL;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen } else if (map->mmap_base != NULL) {

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen i_assert(map->buffer == NULL);

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen if (munmap(map->mmap_base, map->mmap_size) < 0)

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen mail_index_set_syscall_error(index, "munmap()");

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen map->mmap_base = NULL;

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen }

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen if (map->refcount > 0) {

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen memset(&map->hdr, 0, sizeof(map->hdr));

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen map->mmap_size = 0;

5e69206e0b13bbe3dbc50c5dc6c58da007402237Timo Sirainen map->mmap_used_size = 0;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen map->records = NULL;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen map->records_count = 0;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen }

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen}

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainenvoid mail_index_unmap(struct mail_index *index, struct mail_index_map **_map)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen{

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen struct mail_index_map *map = *_map;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen *_map = NULL;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (--map->refcount > 0)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen i_assert(map->refcount == 0);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen mail_index_map_clear(index, map);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (map->extension_pool != NULL)

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen pool_unref(map->extension_pool);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (array_is_created(&map->keyword_idx_map))

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen array_free(&map->keyword_idx_map);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen buffer_free(map->hdr_copy_buf);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen i_free(map);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen}

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainenstatic void mail_index_map_copy_hdr(struct mail_index_map *map,

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen const struct mail_index_header *hdr)

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen{

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen if (hdr->base_header_size < sizeof(map->hdr)) {

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen /* header smaller than ours, make a copy so our newer headers

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen memset(&map->hdr, 0, sizeof(map->hdr));

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen memcpy(&map->hdr, hdr, hdr->base_header_size);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen } else {

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen map->hdr = *hdr;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen }

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen}

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainenstatic int mail_index_mmap(struct mail_index *index, struct mail_index_map *map)

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen{

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen const struct mail_index_header *hdr;

bb10ebcf076c959c752f583746d83805d7686df8Timo Sirainen unsigned int records_count;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen i_assert(!map->write_to_disk);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (map->buffer != NULL) {

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen /* we had temporarily used a buffer, eg. for updating index */

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen buffer_free(map->buffer);

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen map->buffer = NULL;

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen }

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen map->mmap_base = index->readonly ?

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen mmap_ro_file(index->fd, &map->mmap_size) :

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen mmap_rw_file(index->fd, &map->mmap_size);

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen if (map->mmap_base == MAP_FAILED) {

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen map->mmap_base = NULL;

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen mail_index_set_syscall_error(index, "mmap()");

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen return -1;

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen }

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen hdr = map->mmap_base;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen if (map->mmap_size >

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen offsetof(struct mail_index_header, major_version) &&

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen hdr->major_version != MAIL_INDEX_MAJOR_VERSION) {

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen /* major version change - handle silently */

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen return 0;

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen }

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen if (map->mmap_size < MAIL_INDEX_HEADER_MIN_SIZE) {

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen "File too small (%"PRIuSIZE_T")",

4c1827d5d718d6f610df3209a2eb95a6591698afTimo Sirainen index->filepath, map->mmap_size);

5a4ab3d6e108a899c8b51bebd0094a37b738d5a1Timo Sirainen return 0;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen }

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->mmap_used_size = hdr->header_size +

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen hdr->messages_count * hdr->record_size;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (map->mmap_used_size > map->mmap_size) {

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen records_count = (map->mmap_size - hdr->header_size) /

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen hdr->record_size;

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen "messages_count too large (%u > %u)",

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen index->filepath, hdr->messages_count,

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen records_count);

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen return 0;

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen }

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen mail_index_map_copy_hdr(map, hdr);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->hdr_base = map->mmap_base;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->records = PTR_OFFSET(map->mmap_base, map->hdr.header_size);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->records_count = map->hdr.messages_count;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen return 1;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen}

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainenstatic int mail_index_read_header(struct mail_index *index,

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen void *buf, size_t buf_size, size_t *pos_r)

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen{

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen size_t pos;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen int ret;

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen memset(buf, 0, sizeof(struct mail_index_header));

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

cd65dfcedc603fabbf644be793efb09096f6c1b5Timo Sirainen /* try to read the whole header, but it's not necessarily an error to

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen pos = 0;

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen do {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen ret = pread(index->fd, PTR_OFFSET(buf, pos),

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen buf_size - pos, pos);

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen if (ret > 0)

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen pos += ret;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen } while (ret > 0 && pos < sizeof(struct mail_index_header));

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen *pos_r = pos;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return ret;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen}

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainenstatic int

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainenmail_index_read_map(struct mail_index *index, struct mail_index_map *map,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen bool *retry_r, bool try_retry)

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen{

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen const struct mail_index_header *hdr;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen unsigned char buf[512];

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen void *data = NULL;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen ssize_t ret;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen size_t pos, records_size;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen i_assert(map->mmap_base == NULL);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen *retry_r = FALSE;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen ret = mail_index_read_header(index, buf, sizeof(buf), &pos);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen hdr = (const struct mail_index_header *)buf;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (pos > (ssize_t)offsetof(struct mail_index_header, major_version) &&

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen hdr->major_version != MAIL_INDEX_MAJOR_VERSION) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* major version change - handle silently */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return 0;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen if (ret >= 0 && pos >= MAIL_INDEX_HEADER_MIN_SIZE &&

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen (ret > 0 || pos >= hdr->base_header_size)) {

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen if (hdr->base_header_size < MAIL_INDEX_HEADER_MIN_SIZE ||

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen hdr->header_size < hdr->base_header_size) {

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mail_index_set_error(index, "Corrupted index file %s: "

28dd1eeb9fdb93051bb5899c80cf300d69ba9f9eTimo Sirainen "Corrupted header sizes (base %u, full %u)",

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen index->filepath, hdr->base_header_size,

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen hdr->header_size);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen return 0;

4c1827d5d718d6f610df3209a2eb95a6591698afTimo Sirainen }

4c1827d5d718d6f610df3209a2eb95a6591698afTimo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (pos > hdr->header_size)

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen pos = hdr->header_size;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen /* place the base header into memory. */

05751847e5e493fecfd0634d35d21722aad44a0bTimo Sirainen buffer_reset(map->hdr_copy_buf);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen buffer_append(map->hdr_copy_buf, buf, pos);

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen if (pos != hdr->header_size) {

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen /* @UNSAFE: read the rest of the header into memory */

91b5eae18db48ebb70eee5407a7ab52bf798ee12Timo Sirainen data = buffer_append_space_unsafe(map->hdr_copy_buf,

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen hdr->header_size -

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen pos);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen ret = pread_full(index->fd, data,

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen hdr->header_size - pos, pos);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen }

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen }

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (ret > 0) {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen /* header read, read the records now. */

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen records_size = hdr->messages_count * hdr->record_size;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (map->buffer == NULL) {

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen map->buffer = buffer_create_dynamic(default_pool,

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen records_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen /* @UNSAFE */

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen buffer_set_used_size(map->buffer, 0);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen data = buffer_append_space_unsafe(map->buffer, records_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen ret = pread_full(index->fd, data, records_size,

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen hdr->header_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (ret < 0) {

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (errno == ESTALE && try_retry) {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen /* a new index file was renamed over this one. */

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen *retry_r = TRUE;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen return 0;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mail_index_set_syscall_error(index, "pread_full()");

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen return -1;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen }

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen if (ret == 0) {

4b058f90f9e8a2c6b2eed275de4eb8cc5195a71dTimo Sirainen mail_index_set_error(index,

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen "Corrupted index file %s: File too small",

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen index->filepath);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen return 0;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen }

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->records = data;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->records_count = hdr->messages_count;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

28dd1eeb9fdb93051bb5899c80cf300d69ba9f9eTimo Sirainen mail_index_map_copy_hdr(map, hdr);

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen map->hdr_base = map->hdr_copy_buf->data;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen index->sync_log_file_seq = hdr->log_file_seq;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen index->sync_log_file_offset = hdr->log_file_int_offset;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen return 1;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen}

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainenstatic int mail_index_sync_from_transactions(struct mail_index *index,

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen struct mail_index_map **map,

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen bool sync_to_index)

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen{

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen const struct mail_index_header *map_hdr = &(*map)->hdr;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen struct mail_index_view *view;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen struct mail_transaction_log_view *log_view;

b47c57ee07ccfe76cc23b23bc720e17fe9a46d5cTimo Sirainen struct mail_index_sync_map_ctx sync_map_ctx;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen struct mail_index_header hdr;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen const struct mail_transaction_header *thdr;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen const void *tdata;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen uint32_t prev_seq, max_seq;

b2105c78f0fd58281317e6d777ded860f33153a3Timo Sirainen uoff_t prev_offset, max_offset;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen size_t pos;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen int ret;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen bool skipped;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (sync_to_index) {

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen /* read the real log position where we are supposed to be

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen ret = mail_index_read_header(index, &hdr, sizeof(hdr), &pos);

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen if (ret < 0 && errno != ESTALE) {

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen mail_index_set_syscall_error(index, "pread()");

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen return -1;

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen }

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen if (pos < MAIL_INDEX_HEADER_MIN_SIZE)

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen return 0;

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen if (map_hdr->log_file_seq == hdr.log_file_seq &&

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen map_hdr->log_file_int_offset == hdr.log_file_int_offset) {

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen /* nothing to do */

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen return 1;

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen }

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen if (map_hdr->log_file_seq > hdr.log_file_seq ||

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen (map_hdr->log_file_seq == hdr.log_file_seq &&

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen map_hdr->log_file_int_offset > hdr.log_file_int_offset)) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* we went too far, have to re-read the file */

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen return 0;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen if (map_hdr->log_file_ext_offset !=

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen map_hdr->log_file_int_offset ||

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen hdr.log_file_ext_offset != hdr.log_file_int_offset) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* too much trouble to get this right. */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return 0;

0b38c17fb10e2ad1d081369d34b93d0448d971a2Timo Sirainen }

0b38c17fb10e2ad1d081369d34b93d0448d971a2Timo Sirainen max_seq = hdr.log_file_seq;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen max_offset = hdr.log_file_int_offset;

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen } else {

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen /* sync everything there is */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen max_seq = (uint32_t)-1;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen max_offset = (uoff_t)-1;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen log_view = mail_transaction_log_view_open(index->log);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen if (mail_transaction_log_view_set(log_view,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen map_hdr->log_file_seq,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen map_hdr->log_file_int_offset,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen max_seq, max_offset,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen MAIL_TRANSACTION_TYPE_MASK) <= 0) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* can't use it. sync by re-reading index. */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen mail_transaction_log_view_close(&log_view);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen return 0;

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen }

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen index->map = *map;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen view = mail_index_view_open(index);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen mail_index_sync_map_init(&sync_map_ctx, view,

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen MAIL_INDEX_SYNC_HANDLER_VIEW);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen while ((ret = mail_transaction_log_view_next(log_view, &thdr, &tdata,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen &skipped)) > 0) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen if (mail_index_sync_record(&sync_map_ctx, thdr, tdata) < 0) {

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen ret = -1;

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen break;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen mail_transaction_log_view_get_prev_pos(log_view, &prev_seq,

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen &prev_offset);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen i_assert(prev_seq <= max_seq &&

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen (prev_seq != max_seq || prev_offset <= max_offset));

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen index->map->hdr.log_file_seq = prev_seq;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen index->map->hdr.log_file_int_offset =

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen index->map->hdr.log_file_ext_offset = prev_offset;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen mail_index_sync_map_deinit(&sync_map_ctx);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen mail_index_view_close(&view);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen mail_transaction_log_view_close(&log_view);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen *map = index->map;

a050ca9def13949dbaa67bd6574a41c4f397ae26Timo Sirainen index->map = NULL;

a050ca9def13949dbaa67bd6574a41c4f397ae26Timo Sirainen

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen if (sync_to_index) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* make sure we did everything right. note that although the

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen i_assert(hdr.messages_count == (*map)->hdr.messages_count);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen i_assert(hdr.log_file_seq == (*map)->hdr.log_file_seq);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen i_assert(hdr.log_file_int_offset == (*map)->hdr.log_file_int_offset);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen i_assert(hdr.log_file_ext_offset == (*map)->hdr.log_file_ext_offset);

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

9315dd69233d554452df0c12bc57002d2042a8f4Timo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return ret < 0 ? -1 : 1;

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen}

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainenstatic int mail_index_read_map_with_retry(struct mail_index *index,

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen struct mail_index_map **map,

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen bool sync_to_index)

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen{

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen mail_index_sync_lost_handler_t *const *handlers;

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen unsigned int i, count;

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen int ret;

fea541eec46707f9b01bd3cbc981d73c1e808a54Timo Sirainen bool retry;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen if (index->log_locked) {

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen /* we're most likely syncing the index and we really don't

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen sync_to_index = TRUE;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen if ((*map)->hdr.indexid != 0 && index->log != NULL) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* we're not creating the index, or opening transaction log.

0b38c17fb10e2ad1d081369d34b93d0448d971a2Timo Sirainen index->sync_update = TRUE;

f2786c07cbd4a7a0a6a46c3e06dc4545aaf2f278Timo Sirainen ret = mail_index_sync_from_transactions(index, map,

f2786c07cbd4a7a0a6a46c3e06dc4545aaf2f278Timo Sirainen sync_to_index);

f2786c07cbd4a7a0a6a46c3e06dc4545aaf2f278Timo Sirainen index->sync_update = FALSE;

f2786c07cbd4a7a0a6a46c3e06dc4545aaf2f278Timo Sirainen if (ret != 0)

0b38c17fb10e2ad1d081369d34b93d0448d971a2Timo Sirainen return ret;

0b38c17fb10e2ad1d081369d34b93d0448d971a2Timo Sirainen

0b38c17fb10e2ad1d081369d34b93d0448d971a2Timo Sirainen /* transaction log lost/broken, fallback to re-reading it */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen /* notify all "sync lost" handlers */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen handlers = array_get(&index->sync_lost_handlers, &count);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen for (i = 0; i < count; i++)

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen (*handlers[i])(index);

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen for (i = 0;; i++) {

a80241dc44ee43bc809ed5ec6dedb74711966dafTimo Sirainen ret = mail_index_read_map(index, *map, &retry,

a80241dc44ee43bc809ed5ec6dedb74711966dafTimo Sirainen i < MAIL_INDEX_ESTALE_RETRY_COUNT);

5e2cf2e665bb0c3c68fa34bc6d0e9ce93426fdd0Timo Sirainen if (ret != 0 || !retry)

a80241dc44ee43bc809ed5ec6dedb74711966dafTimo Sirainen return ret;

a80241dc44ee43bc809ed5ec6dedb74711966dafTimo Sirainen

a80241dc44ee43bc809ed5ec6dedb74711966dafTimo Sirainen /* ESTALE - reopen index file */

09714f2f8d4c8cc7d89930f7eb836816d8dc9eb8Timo Sirainen if (close(index->fd) < 0)

09714f2f8d4c8cc7d89930f7eb836816d8dc9eb8Timo Sirainen mail_index_set_syscall_error(index, "close()");

0c583855501178ec9c62f2a94946192df2a01be4Timo Sirainen index->fd = -1;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen ret = mail_index_try_open_only(index);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (ret <= 0) {

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen if (ret == 0) {

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen /* the file was lost */

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen errno = ENOENT;

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen mail_index_set_syscall_error(index, "open()");

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen }

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen return -1;

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen }

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen }

673ab5815277e6f9ac09227c866c90ab57438912Timo Sirainen

673ab5815277e6f9ac09227c866c90ab57438912Timo Sirainen /* Too many ESTALE retries */

673ab5815277e6f9ac09227c866c90ab57438912Timo Sirainen mail_index_set_syscall_error(index, "read_map()");

673ab5815277e6f9ac09227c866c90ab57438912Timo Sirainen return -1;

673ab5815277e6f9ac09227c866c90ab57438912Timo Sirainen}

673ab5815277e6f9ac09227c866c90ab57438912Timo Sirainen

2ef8fac74c9d0bfc330bf53bb06df7e9d5f08e7dTimo Sirainenstatic int mail_index_map_try_existing(struct mail_index_map *map)

2ef8fac74c9d0bfc330bf53bb06df7e9d5f08e7dTimo Sirainen{

2ef8fac74c9d0bfc330bf53bb06df7e9d5f08e7dTimo Sirainen const struct mail_index_header *hdr;

b9ce555e8624a5593b3bfd81b572b7d2e1e1fca5Timo Sirainen size_t used_size;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen if (MAIL_INDEX_MAP_IS_IN_MEMORY(map))

b9ce555e8624a5593b3bfd81b572b7d2e1e1fca5Timo Sirainen return 0;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen hdr = map->mmap_base;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen /* always check corrupted-flag to avoid errors later */

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen if ((hdr->flags & MAIL_INDEX_HDR_FLAG_CORRUPTED) != 0)

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return -1;

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen used_size = hdr->header_size + hdr->messages_count * hdr->record_size;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen if (map->mmap_size >= used_size && map->hdr_base == hdr) {

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen map->records_count = hdr->messages_count;

f23298fea47eecbeded985ee2537a34c4c4ef56bTimo Sirainen mail_index_map_copy_hdr(map, hdr);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen return 1;

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen }

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen return 0;

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen}

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainenint mail_index_map(struct mail_index *index, bool force)

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen{

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen struct mail_index_map *map;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen int ret;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen i_assert(!index->mapping);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen i_assert(index->map == NULL || index->map->refcount > 0);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen i_assert(index->lock_type != F_UNLCK);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (MAIL_INDEX_IS_IN_MEMORY(index)) {

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (index->map == NULL)

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen mail_index_create_in_memory(index, NULL);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen return 1;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen }

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen index->mapping = TRUE;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen if (!force && index->map != NULL) {

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen i_assert(index->hdr != NULL);

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen ret = mail_index_map_try_existing(index->map);

19593623a2278039be23fc93e3404c012920b664Timo Sirainen if (ret != 0) {

19593623a2278039be23fc93e3404c012920b664Timo Sirainen index->mapping = FALSE;

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen return ret;

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen }

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen if (index->lock_type == F_WRLCK) {

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen /* we're syncing, don't break the mapping */

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen index->mapping = FALSE;

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen return 1;

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen }

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen }

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen if (index->map != NULL && index->map->refcount > 1) {

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen /* this map is already used by some views and they may have

0ce3bbb0f03fb0ee99258b41b5a1d689c1158a75Timo Sirainen if (!index->mmap_disable) {

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen map = NULL;

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen } else {

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen /* create a copy of the mapping instead so we don't

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen map = mail_index_map_clone(index->map,

6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen index->map->hdr.record_size);

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen }

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen index->map->refcount--;

31ddc75584c5cde53d2e78a737587f2e7fdcb0d2Timo Sirainen index->map = NULL;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen } else {

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen map = index->map;

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen }

68917b81c83e8a4d18a81cda188ffa5cb643c46cTimo Sirainen

68917b81c83e8a4d18a81cda188ffa5cb643c46cTimo Sirainen if (map == NULL) {

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen map = i_new(struct mail_index_map, 1);

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen map->refcount = 1;

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen map->hdr_copy_buf =

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen buffer_create_dynamic(default_pool, sizeof(map->hdr));

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen } else if (MAIL_INDEX_MAP_IS_IN_MEMORY(map)) {

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen i_assert(!map->write_to_disk);

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen } else if (map->mmap_base != NULL) {

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen i_assert(map->buffer == NULL);

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen if (munmap(map->mmap_base, map->mmap_size) < 0)

20c26f4fcf9ef87434761829cc209c2f84ff5716Timo Sirainen mail_index_set_syscall_error(index, "munmap()");

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen map->mmap_base = NULL;

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen }

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen index->hdr = NULL;

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen index->map = NULL;

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen if (!index->mmap_disable)

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen ret = mail_index_mmap(index, map);

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen else

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen ret = mail_index_read_map_with_retry(index, &map, force);

6a19e109ee8c5a6f688da83a86a7f6abeb71abddTimo Sirainen i_assert(index->map == NULL);

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen

e2ea49bd487d76b425e270321e9cf1e546642de0Timo Sirainen if (ret > 0) {

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen ret = mail_index_check_header(index, map);

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen if (ret < 0)

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen ret = 0;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen else if (ret == 0) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen index->fsck = TRUE;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen ret = 1;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

d7095f3a4466fbb78b2d5eb3d322bc15a5b0ab1fTimo Sirainen

d7095f3a4466fbb78b2d5eb3d322bc15a5b0ab1fTimo Sirainen if (ret <= 0) {

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen mail_index_map_clear(index, map);

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen mail_index_unmap(index, &map);

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen index->mapping = FALSE;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return ret;

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen }

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen

c48140ca508ebc9642737e7fd6c8d9e52f95df32Timo Sirainen index->hdr = &map->hdr;

e06c0b65c16ccce69bbee009ead14d7d3d17a256Timo Sirainen index->map = map;

e06c0b65c16ccce69bbee009ead14d7d3d17a256Timo Sirainen i_assert(map->hdr.messages_count == map->records_count);

e06c0b65c16ccce69bbee009ead14d7d3d17a256Timo Sirainen index->mapping = FALSE;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen return 1;

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen}

e06c0b65c16ccce69bbee009ead14d7d3d17a256Timo Sirainen

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainenint mail_index_get_latest_header(struct mail_index *index,

e06c0b65c16ccce69bbee009ead14d7d3d17a256Timo Sirainen struct mail_index_header *hdr_r)

3c24d47ad5ff02ea00684233bef314ef2eefda4aTimo Sirainen{

19593623a2278039be23fc93e3404c012920b664Timo Sirainen size_t pos;

19593623a2278039be23fc93e3404c012920b664Timo Sirainen unsigned int i;

19593623a2278039be23fc93e3404c012920b664Timo Sirainen int ret;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (!index->mmap_disable) {

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen ret = mail_index_map(index, FALSE);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (ret > 0)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen *hdr_r = *index->hdr;

3e4bbbceed7882b8dab558aa90913a491eb15cc6Timo Sirainen else

3e4bbbceed7882b8dab558aa90913a491eb15cc6Timo Sirainen memset(hdr_r, 0, sizeof(*hdr_r));

e86d0d34fe365da4c7ca4312d575bfcbf3a01c0eTimo Sirainen return ret;

45edf6cad665a5c270322516c587708a0c630b80Timo Sirainen }

20c26f4fcf9ef87434761829cc209c2f84ff5716Timo Sirainen

20c26f4fcf9ef87434761829cc209c2f84ff5716Timo Sirainen for (i = 0;; i++) {

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen ret = mail_index_read_header(index, hdr_r, sizeof(*hdr_r),

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen &pos);

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen if (ret <= 0 || errno != ESTALE ||

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen i == MAIL_INDEX_ESTALE_RETRY_COUNT)

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen break;

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen /* ESTALE - reopen index file */

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen if (close(index->fd) < 0)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen mail_index_set_syscall_error(index, "close()");

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen index->fd = -1;

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen

0e17a51126ed6f376f9207217797103b610ff8ebTimo Sirainen ret = mail_index_try_open_only(index);

d5cebe7f98e63d4e2822863ef2faa4971e8b3a5dTimo Sirainen if (ret <= 0) {

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen if (ret == 0) {

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen /* the file was lost */

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen errno = ENOENT;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen mail_index_set_syscall_error(index, "open()");

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen }

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen return -1;

20c26f4fcf9ef87434761829cc209c2f84ff5716Timo Sirainen }

ed3ce1282f6bc35d20e82c2c23a2990c8dfe876fTimo Sirainen }

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (ret < 0)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen mail_index_set_syscall_error(index, "pread_full()");

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen return ret;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen}

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainenstruct mail_index_map *

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainenmail_index_map_clone(struct mail_index_map *map, uint32_t new_record_size)

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen{

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen struct mail_index_map *mem_map;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen struct mail_index_header *hdr;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen struct mail_index_ext *extensions;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen void *src, *dest;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen size_t size, copy_size;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen unsigned int i, count;

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen size = map->records_count * new_record_size;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mem_map = i_new(struct mail_index_map, 1);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mem_map->refcount = 1;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mem_map->buffer = buffer_create_dynamic(default_pool, size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (map->hdr.record_size == new_record_size)

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen buffer_append(mem_map->buffer, map->records, size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen else {

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen copy_size = I_MIN(map->hdr.record_size, new_record_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen src = map->records;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen for (i = 0; i < map->records_count; i++) {

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen dest = buffer_append_space_unsafe(mem_map->buffer,

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen new_record_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen memcpy(dest, src, copy_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen src = PTR_OFFSET(src, map->hdr.record_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mem_map->records = buffer_get_modifyable_data(mem_map->buffer, NULL);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mem_map->records_count = map->records_count;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mem_map->hdr_copy_buf =

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen buffer_create_dynamic(default_pool, map->hdr.header_size);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (map->hdr.base_header_size < sizeof(*hdr))

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen buffer_append_zero(mem_map->hdr_copy_buf, sizeof(*hdr));

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen buffer_write(mem_map->hdr_copy_buf, 0,

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen &map->hdr, map->hdr.base_header_size);

c485524d09c650ff6e6c552129d4257ac6145a8bTimo Sirainen buffer_append(mem_map->hdr_copy_buf,

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen CONST_PTR_OFFSET(map->hdr_base,

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen map->hdr.base_header_size),

75ef04fc62a3955d3a5310410e09735cbd4e972bTimo Sirainen map->hdr.header_size - map->hdr.base_header_size);

8e7da21696c9f8a6d5e601243fb6172ec85d47b2Timo Sirainen

d7095f3a4466fbb78b2d5eb3d322bc15a5b0ab1fTimo Sirainen hdr = buffer_get_modifyable_data(mem_map->hdr_copy_buf, NULL);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (hdr->base_header_size < sizeof(*hdr))

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen hdr->base_header_size = sizeof(*hdr);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen hdr->record_size = new_record_size;

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen mem_map->hdr = *hdr;

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen mem_map->hdr_base = hdr;

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen /* copy extensions */

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (array_is_created(&map->ext_id_map)) {

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen count = array_count(&map->ext_id_map);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen mail_index_map_init_extbufs(mem_map, count + 2);

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen array_append_array(&mem_map->extensions, &map->extensions);

4b058f90f9e8a2c6b2eed275de4eb8cc5195a71dTimo Sirainen array_append_array(&mem_map->ext_id_map, &map->ext_id_map);

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen /* fix the name pointers to use our own pool */

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen extensions = array_get_modifyable(&mem_map->extensions, &count);

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen for (i = 0; i < count; i++) {

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen extensions[i].name = p_strdup(mem_map->extension_pool,

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen extensions[i].name);

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen }

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen }

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen return mem_map;

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen}

7e94cf9d70ce9fdeccb7a85ff400b899e6386f36Timo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainenint mail_index_map_get_ext_idx(struct mail_index_map *map,

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen uint32_t ext_id, uint32_t *idx_r)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen{

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen const uint32_t *id;

4b058f90f9e8a2c6b2eed275de4eb8cc5195a71dTimo Sirainen

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen if (!array_is_created(&map->ext_id_map) ||

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen ext_id >= array_count(&map->ext_id_map))

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen return 0;

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen id = array_idx(&map->ext_id_map, ext_id);

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen *idx_r = *id;

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen return *idx_r != (uint32_t)-1;

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen}

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainenstatic int mail_index_try_open_only(struct mail_index *index)

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainen{

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen i_assert(!MAIL_INDEX_IS_IN_MEMORY(index));

1b3bb8d39686ed24730cbc31cc9a33dc62c8c6c3Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen /* Note that our caller must close index->fd by itself.

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen index->fd = nfs_safe_open(index->filepath, O_RDWR);

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen index->readonly = FALSE;

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen if (index->fd == -1 && errno == EACCES) {

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen index->fd = open(index->filepath, O_RDONLY);

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen index->readonly = TRUE;

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen }

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen if (index->fd == -1) {

c234379ba20d2513b1acca97f13c64e2a9e5d622Timo Sirainen if (errno != ENOENT)

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen return mail_index_set_syscall_error(index, "open()");

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen /* have to create it */

bbf796c17f02538058d7559bfe96d677e5b55015Timo Sirainen return 0;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen }

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen return 1;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen}

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainenstatic int

8d80659e504ffb34bb0c6a633184fece35751b18Timo Sirainenmail_index_try_open(struct mail_index *index, unsigned int *lock_id_r)

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen{

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen unsigned int lock_id;

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen int ret;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen i_assert(index->fd == -1);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen if (lock_id_r != NULL)

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen *lock_id_r = 0;

0cb2e8eb55e70f8ebe1e8349bdf49e4cbe5d8834Timo Sirainen

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen if (MAIL_INDEX_IS_IN_MEMORY(index))

7797aa2479e99aeb71057b7a2584b2cb72e4d3f8Timo Sirainen return 0;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen ret = mail_index_try_open_only(index);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (ret <= 0)

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen return ret;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (mail_index_lock_shared(index, FALSE, &lock_id) < 0) {

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen (void)close(index->fd);

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen index->fd = -1;

287ba82a8da3eaa473b5735d4eeac2fb4c5d8117Timo Sirainen return -1;

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen }

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen ret = mail_index_map(index, FALSE);

5a07b37a9df398b5189c14872a600384208ab74bTimo Sirainen if (ret == 0) {

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen /* it's corrupted - recreate it */

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen mail_index_unlock(index, lock_id);

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen if (lock_id_r != NULL)

4b231ca0bbe3b536acbd350101e183441ce0247aTimo Sirainen *lock_id_r = 0;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen (void)close(index->fd);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen index->fd = -1;

89b548af722113acb5d63dfffb44423cb60f91e4Timo Sirainen } else {

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen if (lock_id_r != NULL)

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen *lock_id_r = lock_id;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen else

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen mail_index_unlock(index, lock_id);

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen }

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen return ret;

1e47cfede3a0b62654105daab00e97b5d660bc6bTimo Sirainen}

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainenint mail_index_write_base_header(struct mail_index *index,

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen const struct mail_index_header *hdr)

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen{

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen size_t hdr_size;

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen

e4b09b008ab544eb8994beecbfffefa21d855e43Timo Sirainen hdr_size = I_MIN(sizeof(*hdr), hdr->base_header_size);