int mailmbox_write_lock(struct mailmbox_folder * folder)
{
int r;
if (folder->mb_read_only)
return MAILMBOX_ERROR_READONLY;
r = maillock_write_lock(folder->mb_filename, folder->mb_fd);
if (r == 0)
return MAILMBOX_NO_ERROR;
else
return MAILMBOX_ERROR_FILE;
}
static void write_article_seq(mailsession * session,
uint32_t first, uint32_t last)
{
FILE * f;
struct nntp_session_state_data * ancestor_data;
char seq_filename[PATH_MAX];
struct nntp_cached_session_state_data * cached_data;
int r;
int fd;
cached_data = get_cached_data(session);
ancestor_data = get_ancestor_data(session);
if (ancestor_data->nntp_group_name == NULL)
return;
snprintf(seq_filename, PATH_MAX, "%s/%s/%s",
cached_data->nntp_cache_directory,
ancestor_data->nntp_group_name, SEQ_FILENAME);
fd = creat(seq_filename, S_IRUSR | S_IWUSR);
if (fd < 0)
return;
f = fdopen(fd, "w");
if (f != NULL) {
r = maillock_write_lock(seq_filename, fd);
if (r == 0) {
MMAPString * mmapstr;
size_t cur_token;
mmapstr = mmap_string_new("");
if (mmapstr != NULL) {
r = mail_serialize_clear(mmapstr, &cur_token);
if (r == MAIL_NO_ERROR) {
r = mailimf_cache_int_write(mmapstr, &cur_token, first);
r = mailimf_cache_int_write(mmapstr, &cur_token, last);
fwrite(mmapstr->str, 1, mmapstr->len, f);
}
mmap_string_free(mmapstr);
}
r = maillock_write_unlock(seq_filename, fd);
}
fclose(f);
}
else
close(fd);
}
int mail_cache_db_open_lock(const char * filename,
struct mail_cache_db ** pcache_db)
{
int r;
struct mail_cache_db * cache_db;
r = maillock_write_lock(filename, -1);
if (r < 0)
goto err;
r = mail_cache_db_open(filename, &cache_db);
if (r < 0)
goto unlock;
* pcache_db = cache_db;
return 0;
unlock:
maillock_write_unlock(filename, -1);
err:
return -1;
}
