mail-index.c revision bb5ef57ee0bebf2c44ee9dee8d94565b850b5e58
c25356d5978632df6203437e1953bcb29e0c736fTimo Sirainen/* Copyright (c) 2003-2008 Dovecot authors, see the included COPYING file */
c25356d5978632df6203437e1953bcb29e0c736fTimo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#include "lib.h"
be5c76fabc7439fd33bc799bc3ab3f570799977bTimo Sirainen#include "ioloop.h"
ee6df9526e9716b3f1734d85b566e00fc41208bcTimo Sirainen#include "array.h"
137ea7ca34005345aa2304a940149b7f3774d727Timo Sirainen#include "buffer.h"
e76073ebaf90fa29abfdc364873acf78983949aaTimo Sirainen#include "hash.h"
1e21e6be70994b1aa9e52ca0e2f51afefca6d0dfTimo Sirainen#include "str-sanitize.h"
04052d7cacaa866a3f00afb4e104fa46c04c1dd7Timo Sirainen#include "mmap-util.h"
3b94ff5951db4d4eddb7a80ed4e3f61207202635Timo Sirainen#include "nfs-workarounds.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "read-full.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "write-full.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "mail-index-private.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "mail-index-view-private.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "mail-index-sync-private.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "mail-transaction-log.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen#include "mail-cache.h"
0f39a57760d93cddbce3ca43096d78e0fe2f42fdTimo Sirainen
66d2db642fe24d555d113ba463e446b038d476efTimo Sirainen#include <stdio.h>
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen#include <stddef.h>
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen#include <time.h>
22535a9e685e29214082878e37a267157044618eTimo Sirainen#include <sys/stat.h>
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
f3d506e525a720f214020ca0f989a1966b30edaeTimo Sirainenstruct mail_index_module_register mail_index_module_register = { 0 };
74674a53a72dab535c61f455b2246ef2797844eaTimo Sirainen
74674a53a72dab535c61f455b2246ef2797844eaTimo Sirainenstruct mail_index *mail_index_alloc(const char *dir, const char *prefix)
74674a53a72dab535c61f455b2246ef2797844eaTimo Sirainen{
74674a53a72dab535c61f455b2246ef2797844eaTimo Sirainen struct mail_index *index;
c5383a0ed56a188a7d5efaaa4c6f8243af432d65Timo Sirainen
66d2db642fe24d555d113ba463e446b038d476efTimo Sirainen index = i_new(struct mail_index, 1);
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen index->dir = i_strdup(dir);
6ef7e31619edfaa17ed044b45861d106a86191efTimo Sirainen index->prefix = i_strdup(prefix);
3cf67672fdc87583cb23ce088c95bb5dee60e74dTimo Sirainen index->fd = -1;
3cf67672fdc87583cb23ce088c95bb5dee60e74dTimo Sirainen
66d2db642fe24d555d113ba463e446b038d476efTimo Sirainen index->extension_pool =
9ed2951bd0bb1878a27437d7c00611b2baadd614Timo Sirainen pool_alloconly_create(MEMPOOL_GROWING"index extension", 1024);
9ed2951bd0bb1878a27437d7c00611b2baadd614Timo Sirainen p_array_init(&index->extensions, index->extension_pool, 5);
e48d89622047bd8bbd0475b881ca9377d592f535Timo Sirainen i_array_init(&index->sync_lost_handlers, 4);
2d8f66596f445dd8b399b7032c3f0e9202015b63Timo Sirainen i_array_init(&index->module_contexts,
2d8f66596f445dd8b399b7032c3f0e9202015b63Timo Sirainen I_MIN(5, mail_index_module_register.id));
2d8f66596f445dd8b399b7032c3f0e9202015b63Timo Sirainen
04052d7cacaa866a3f00afb4e104fa46c04c1dd7Timo Sirainen index->mode = 0600;
9ed2951bd0bb1878a27437d7c00611b2baadd614Timo Sirainen index->gid = (gid_t)-1;
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen index->keywords_ext_id =
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen mail_index_ext_register(index, "keywords", 128, 2, 1);
e9371f899a3d4207a0ffd3923ea5ec7250cf5e75Timo Sirainen index->keywords_pool = pool_alloconly_create("keywords", 512);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen i_array_init(&index->keywords, 16);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen index->keywords_hash =
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen hash_create(default_pool, index->keywords_pool, 0,
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen strcase_hash, (hash_cmp_callback_t *)strcasecmp);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen index->log = mail_transaction_log_alloc(index);
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen return index;
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen}
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen
849969f639a00eab26791db3cb1b66430420c0cdTimo Sirainenvoid mail_index_free(struct mail_index **_index)
f3d506e525a720f214020ca0f989a1966b30edaeTimo Sirainen{
b42f37ae6f65ed986315b6885568d32115e589b1Timo Sirainen struct mail_index *index = *_index;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
3b94ff5951db4d4eddb7a80ed4e3f61207202635Timo Sirainen *_index = NULL;
66d2db642fe24d555d113ba463e446b038d476efTimo Sirainen mail_index_close(index);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen mail_transaction_log_free(&index->log);
e9371f899a3d4207a0ffd3923ea5ec7250cf5e75Timo Sirainen hash_destroy(&index->keywords_hash);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen pool_unref(&index->extension_pool);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen pool_unref(&index->keywords_pool);
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen
43d3ea2780b5f8557ede7b4c039e8f56cb8d357dTimo Sirainen array_free(&index->sync_lost_handlers);
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen array_free(&index->keywords);
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen array_free(&index->module_contexts);
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen i_free(index->error);
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen i_free(index->dir);
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen i_free(index->prefix);
12aad74464367f7e8be11eafe1af985bf7b1adecTimo Sirainen i_free(index);
e48d89622047bd8bbd0475b881ca9377d592f535Timo Sirainen}
04052d7cacaa866a3f00afb4e104fa46c04c1dd7Timo Sirainen
f3d506e525a720f214020ca0f989a1966b30edaeTimo Sirainenvoid mail_index_set_fsync_types(struct mail_index *index,
849969f639a00eab26791db3cb1b66430420c0cdTimo Sirainen enum mail_index_sync_type fsync_mask)
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen{
43a66a0b16299bd4f7615acd85e98bd3832c54d5Timo Sirainen index->fsync_mask = fsync_mask;
43a66a0b16299bd4f7615acd85e98bd3832c54d5Timo Sirainen}
43a66a0b16299bd4f7615acd85e98bd3832c54d5Timo Sirainen
be5c76fabc7439fd33bc799bc3ab3f570799977bTimo Sirainenvoid mail_index_set_permissions(struct mail_index *index,
be5c76fabc7439fd33bc799bc3ab3f570799977bTimo Sirainen mode_t mode, gid_t gid)
43a66a0b16299bd4f7615acd85e98bd3832c54d5Timo Sirainen{
43a66a0b16299bd4f7615acd85e98bd3832c54d5Timo Sirainen index->mode = mode & 0666;
43a66a0b16299bd4f7615acd85e98bd3832c54d5Timo Sirainen index->gid = gid;
1e21e6be70994b1aa9e52ca0e2f51afefca6d0dfTimo Sirainen}
1e21e6be70994b1aa9e52ca0e2f51afefca6d0dfTimo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainenuint32_t mail_index_ext_register(struct mail_index *index, const char *name,
uint32_t default_hdr_size,
uint16_t default_record_size,
uint16_t default_record_align)
{
struct mail_index_registered_ext rext;
uint32_t ext_id;
if (*name == '\0' || strcmp(name, str_sanitize(name, -1)) != 0)
i_panic("mail_index_ext_register(%s): Invalid name", name);
if (default_record_size != 0 && default_record_align == 0) {
i_panic("mail_index_ext_register(%s): "
"Invalid record alignment", name);
}
if (mail_index_ext_lookup(index, name, &ext_id))
return ext_id;
memset(&rext, 0, sizeof(rext));
rext.name = p_strdup(index->extension_pool, name);
rext.index_idx = array_count(&index->extensions);
rext.hdr_size = default_hdr_size;
rext.record_size = default_record_size;
rext.record_align = default_record_align;
array_append(&index->extensions, &rext, 1);
return rext.index_idx;
}
bool mail_index_ext_lookup(struct mail_index *index, const char *name,
uint32_t *ext_id_r)
{
const struct mail_index_registered_ext *extensions;
unsigned int i, count;
extensions = array_get(&index->extensions, &count);
for (i = 0; i < count; i++) {
if (strcmp(extensions[i].name, name) == 0) {
*ext_id_r = i;
return TRUE;
}
}
*ext_id_r = (uint32_t)-1;
return FALSE;
}
void mail_index_register_expunge_handler(struct mail_index *index,
uint32_t ext_id, bool call_always,
mail_index_expunge_handler_t *cb,
void *context)
{
struct mail_index_registered_ext *rext;
rext = array_idx_modifiable(&index->extensions, ext_id);
i_assert(rext->expunge_handler == NULL || rext->expunge_handler == cb);
rext->expunge_handler = cb;
rext->expunge_context = context;
rext->expunge_handler_call_always = call_always;
}
void mail_index_unregister_expunge_handler(struct mail_index *index,
uint32_t ext_id)
{
struct mail_index_registered_ext *rext;
rext = array_idx_modifiable(&index->extensions, ext_id);
i_assert(rext->expunge_handler != NULL);
rext->expunge_handler = NULL;
}
void mail_index_register_sync_handler(struct mail_index *index, uint32_t ext_id,
mail_index_sync_handler_t *cb,
enum mail_index_sync_handler_type type)
{
struct mail_index_registered_ext *rext;
rext = array_idx_modifiable(&index->extensions, ext_id);
i_assert(rext->sync_handler.callback == NULL);
rext->sync_handler.callback = cb;
rext->sync_handler.type = type;
}
void mail_index_unregister_sync_handler(struct mail_index *index,
uint32_t ext_id)
{
struct mail_index_registered_ext *rext;
rext = array_idx_modifiable(&index->extensions, ext_id);
i_assert(rext->sync_handler.callback != NULL);
rext->sync_handler.callback = NULL;
rext->sync_handler.type = 0;
}
void mail_index_register_sync_lost_handler(struct mail_index *index,
mail_index_sync_lost_handler_t *cb)
{
array_append(&index->sync_lost_handlers, &cb, 1);
}
void mail_index_unregister_sync_lost_handler(struct mail_index *index,
mail_index_sync_lost_handler_t *cb)
{
mail_index_sync_lost_handler_t *const *handlers;
unsigned int i, count;
handlers = array_get(&index->sync_lost_handlers, &count);
for (i = 0; i < count; i++) {
if (handlers[i] == cb) {
array_delete(&index->sync_lost_handlers, i, 1);
break;
}
}
}
bool mail_index_keyword_lookup(struct mail_index *index,
const char *keyword, unsigned int *idx_r)
{
void *value;
/* keywords_hash keeps a name => index mapping of keywords.
Keywords are never removed from it, so the index values are valid
for the lifetime of the mail_index. */
if (hash_lookup_full(index->keywords_hash, keyword, NULL, &value)) {
*idx_r = POINTER_CAST_TO(value, unsigned int);
return TRUE;
}
*idx_r = (unsigned int)-1;
return FALSE;
}
void mail_index_keyword_lookup_or_create(struct mail_index *index,
const char *keyword,
unsigned int *idx_r)
{
char *keyword_dup;
i_assert(*keyword != '\0');
if (mail_index_keyword_lookup(index, keyword, idx_r))
return;
keyword = keyword_dup = p_strdup(index->keywords_pool, keyword);
*idx_r = array_count(&index->keywords);
hash_insert(index->keywords_hash, keyword_dup, POINTER_CAST(*idx_r));
array_append(&index->keywords, &keyword, 1);
}
const ARRAY_TYPE(keywords) *mail_index_get_keywords(struct mail_index *index)
{
return &index->keywords;
}
int mail_index_try_open_only(struct mail_index *index)
{
i_assert(index->fd == -1);
i_assert(!MAIL_INDEX_IS_IN_MEMORY(index));
/* Note that our caller must close index->fd by itself. */
if (index->readonly)
errno = EACCES;
else {
index->fd = nfs_safe_open(index->filepath, O_RDWR);
index->readonly = FALSE;
}
if (index->fd == -1 && errno == EACCES) {
index->fd = open(index->filepath, O_RDONLY);
index->readonly = TRUE;
}
if (index->fd == -1) {
if (errno != ENOENT)
return mail_index_set_syscall_error(index, "open()");
/* have to create it */
return 0;
}
return 1;
}
static int
mail_index_try_open(struct mail_index *index)
{
int ret;
i_assert(index->fd == -1);
if (MAIL_INDEX_IS_IN_MEMORY(index))
return 0;
i_assert(index->map == NULL || index->map->rec_map->lock_id == 0);
ret = mail_index_map(index, MAIL_INDEX_SYNC_HANDLER_HEAD);
if (ret == 0) {
/* it's corrupted - recreate it */
if (index->fd != -1) {
if (close(index->fd) < 0)
mail_index_set_syscall_error(index, "close()");
index->fd = -1;
}
}
return ret;
}
int mail_index_create_tmp_file(struct mail_index *index, const char **path_r)
{
mode_t old_mask;
const char *path;
int fd;
i_assert(!MAIL_INDEX_IS_IN_MEMORY(index));
path = *path_r = t_strconcat(index->filepath, ".tmp", NULL);
old_mask = umask(0);
fd = open(path, O_RDWR|O_CREAT|O_TRUNC, index->mode);
umask(old_mask);
if (fd == -1)
return mail_index_file_set_syscall_error(index, path, "open()");
if (index->gid != (gid_t)-1 && fchown(fd, (uid_t)-1, index->gid) < 0) {
mail_index_file_set_syscall_error(index, path, "fchown()");
return -1;
}
return fd;
}
static int mail_index_open_files(struct mail_index *index,
enum mail_index_open_flags flags)
{
int ret;
bool created = FALSE;
ret = mail_transaction_log_open(index->log);
if (ret == 0) {
if ((flags & MAIL_INDEX_OPEN_FLAG_CREATE) == 0)
return 0;
/* if dovecot.index exists, read it first so that we can get
the correct indexid and log sequence */
(void)mail_index_try_open(index);
if (index->indexid == 0) {
/* Create a new indexid for us. If we're opening index
into memory, index->map doesn't exist yet. */
index->indexid = ioloop_time;
if (index->map != NULL)
index->map->hdr.indexid = index->indexid;
}
ret = mail_transaction_log_create(index->log);
created = TRUE;
}
if (ret >= 0) {
ret = index->map != NULL ? 0 : mail_index_try_open(index);
if (ret == 0) {
/* doesn't exist / corrupted */
mail_transaction_log_close(index->log);
ret = mail_transaction_log_create(index->log);
if (ret == 0) {
if (index->map != NULL)
mail_index_unmap(&index->map);
index->map = mail_index_map_alloc(index);
}
}
}
if (ret < 0) {
/* open/create failed, fallback to in-memory indexes */
if ((flags & MAIL_INDEX_OPEN_FLAG_CREATE) == 0)
return -1;
if (mail_index_move_to_memory(index) < 0)
return -1;
}
index->cache = created ? mail_cache_create(index) :
mail_cache_open_or_create(index);
return 1;
}
int mail_index_open(struct mail_index *index, enum mail_index_open_flags flags,
enum file_lock_method lock_method)
{
int ret;
if (index->opened) {
if (index->map != NULL &&
(index->map->hdr.flags &
MAIL_INDEX_HDR_FLAG_CORRUPTED) != 0) {
/* corrupted, reopen files */
mail_index_close(index);
} else {
i_assert(index->map != NULL);
return 1;
}
}
index->filepath = MAIL_INDEX_IS_IN_MEMORY(index) ?
i_strdup("(in-memory index)") :
i_strconcat(index->dir, "/", index->prefix, NULL);
index->shared_lock_count = 0;
index->excl_lock_count = 0;
index->lock_type = F_UNLCK;
index->lock_id_counter = 2;
index->readonly = FALSE;
index->nodiskspace = FALSE;
index->index_lock_timeout = FALSE;
index->log_locked = FALSE;
index->mmap_disable = (flags & MAIL_INDEX_OPEN_FLAG_MMAP_DISABLE) != 0;
index->use_excl_dotlocks =
(flags & MAIL_INDEX_OPEN_FLAG_DOTLOCK_USE_EXCL) != 0;
index->fsync_disable =
(flags & MAIL_INDEX_OPEN_FLAG_FSYNC_DISABLE) != 0;
index->nfs_flush = (flags & MAIL_INDEX_OPEN_FLAG_NFS_FLUSH) != 0;
index->readonly = (flags & MAIL_INDEX_OPEN_FLAG_READONLY) != 0;
index->lock_method = lock_method;
if (index->nfs_flush && index->fsync_disable)
i_fatal("nfs flush requires fsync_disable=no");
if (index->nfs_flush && !index->mmap_disable)
i_fatal("nfs flush requires mmap_disable=yes");
if ((ret = mail_index_open_files(index, flags)) <= 0) {
/* doesn't exist and create flag not used */
mail_index_close(index);
return ret;
}
i_assert(index->map != NULL);
index->opened = TRUE;
return 1;
}
void mail_index_close_file(struct mail_index *index)
{
if (index->file_lock != NULL)
file_lock_free(&index->file_lock);
if (index->fd != -1) {
if (close(index->fd) < 0)
mail_index_set_syscall_error(index, "close()");
index->fd = -1;
}
index->lock_id_counter += 2;
index->lock_type = F_UNLCK;
index->shared_lock_count = 0;
index->excl_lock_count = 0;
}
void mail_index_close(struct mail_index *index)
{
if (index->map != NULL)
mail_index_unmap(&index->map);
mail_index_close_file(index);
mail_transaction_log_close(index->log);
if (index->cache != NULL)
mail_cache_free(&index->cache);
i_free_and_null(index->filepath);
index->indexid = 0;
index->opened = FALSE;
}
int mail_index_reopen_if_changed(struct mail_index *index)
{
struct stat st1, st2;
i_assert(index->shared_lock_count == 0 || !index->nfs_flush);
i_assert(index->excl_lock_count == 0);
if (MAIL_INDEX_IS_IN_MEMORY(index))
return 0;
if (index->fd == -1)
return mail_index_try_open_only(index);
if (index->nfs_flush)
nfs_flush_file_handle_cache(index->filepath);
if (nfs_safe_stat(index->filepath, &st2) < 0) {
if (errno == ENOENT)
return 0;
return mail_index_set_syscall_error(index, "stat()");
}
if (fstat(index->fd, &st1) < 0) {
if (errno != ESTALE)
return mail_index_set_syscall_error(index, "fstat()");
/* deleted/recreated, reopen */
} else if (st1.st_ino == st2.st_ino &&
CMP_DEV_T(st1.st_dev, st2.st_dev)) {
/* the same file */
return 1;
}
/* new file, new locks. the old fd can keep its locks, they don't
matter anymore as no-one's going to modify the file. */
mail_index_close_file(index);
return mail_index_try_open_only(index);
}
int mail_index_refresh(struct mail_index *index)
{
int ret;
ret = mail_index_map(index, MAIL_INDEX_SYNC_HANDLER_HEAD);
return ret <= 0 ? -1 : 0;
}
struct mail_cache *mail_index_get_cache(struct mail_index *index)
{
return index->cache;
}
int mail_index_set_error(struct mail_index *index, const char *fmt, ...)
{
va_list va;
i_free(index->error);
if (fmt == NULL)
index->error = NULL;
else {
va_start(va, fmt);
index->error = i_strdup_vprintf(fmt, va);
va_end(va);
i_error("%s", index->error);
}
return -1;
}
int mail_index_move_to_memory(struct mail_index *index)
{
struct mail_index_map *map;
if (MAIL_INDEX_IS_IN_MEMORY(index))
return index->map == NULL ? -1 : 0;
/* set the index as being into memory */
i_free_and_null(index->dir);
i_free(index->filepath);
index->filepath = i_strdup("(in-memory index)");
if (index->map == NULL) {
/* index was never even opened. just mark it as being in
memory and let the caller re-open the index. */
i_assert(index->fd == -1);
return -1;
}
/* move index map to memory */
if (!MAIL_INDEX_MAP_IS_IN_MEMORY(index->map)) {
map = mail_index_map_clone(index->map);
mail_index_unmap(&index->map);
index->map = map;
}
if (index->log != NULL) {
/* move transaction log to memory */
mail_transaction_log_move_to_memory(index->log);
}
if (index->file_lock != NULL)
file_lock_free(&index->file_lock);
if (index->fd != -1) {
if (close(index->fd) < 0)
mail_index_set_syscall_error(index, "close()");
index->fd = -1;
}
return 0;
}
void mail_index_mark_corrupted(struct mail_index *index)
{
index->indexid = 0;
index->map->hdr.flags |= MAIL_INDEX_HDR_FLAG_CORRUPTED;
if (unlink(index->filepath) < 0 && errno != ENOENT && errno != ESTALE)
mail_index_set_syscall_error(index, "unlink()");
}
int mail_index_set_syscall_error(struct mail_index *index,
const char *function)
{
i_assert(function != NULL);
if (ENOSPACE(errno)) {
index->nodiskspace = TRUE;
return -1;
}
return mail_index_set_error(index, "%s failed with index file %s: %m",
function, index->filepath);
}
int mail_index_file_set_syscall_error(struct mail_index *index,
const char *filepath,
const char *function)
{
i_assert(filepath != NULL);
i_assert(function != NULL);
if (ENOSPACE(errno)) {
index->nodiskspace = TRUE;
return -1;
}
return mail_index_set_error(index, "%s failed with file %s: %m",
function, filepath);
}
const char *mail_index_get_error_message(struct mail_index *index)
{
return index->error;
}
void mail_index_reset_error(struct mail_index *index)
{
if (index->error != NULL) {
i_free(index->error);
index->error = NULL;
}
index->nodiskspace = FALSE;
index->index_lock_timeout = FALSE;
}
#ifdef WORDS_BIGENDIAN
/* FIXME: Unfortunately these functions were originally written to use
endian-specific code and we can't avoid that without breaking backwards
compatibility. When we do break it, just select one of these. */
uint32_t mail_index_uint32_to_offset(uint32_t offset)
{
i_assert(offset < 0x40000000);
i_assert((offset & 3) == 0);
offset >>= 2;
return 0x00000080 | ((offset & 0x0000007f)) |
0x00008000 | ((offset & 0x00003f80) >> 7 << 8) |
0x00800000 | ((offset & 0x001fc000) >> 14 << 16) |
0x80000000 | ((offset & 0x0fe00000) >> 21 << 24);
}
uint32_t mail_index_offset_to_uint32(uint32_t offset)
{
if ((offset & 0x80808080) != 0x80808080)
return 0;
return (((offset & 0x0000007f)) |
((offset & 0x00007f00) >> 8 << 7) |
((offset & 0x007f0000) >> 16 << 14) |
((offset & 0x7f000000) >> 24 << 21)) << 2;
}
#else
uint32_t mail_index_uint32_to_offset(uint32_t offset)
{
i_assert(offset < 0x40000000);
i_assert((offset & 3) == 0);
offset >>= 2;
return 0x80000000 | ((offset & 0x0000007f) << 24) |
0x00800000 | ((offset & 0x00003f80) >> 7 << 16) |
0x00008000 | ((offset & 0x001fc000) >> 14 << 8) |
0x00000080 | ((offset & 0x0fe00000) >> 21);
}
uint32_t mail_index_offset_to_uint32(uint32_t offset)
{
if ((offset & 0x80808080) != 0x80808080)
return 0;
return (((offset & 0x0000007f) << 21) |
((offset & 0x00007f00) >> 8 << 14) |
((offset & 0x007f0000) >> 16 << 7) |
((offset & 0x7f000000) >> 24)) << 2;
}
#endif