static TIMER_CALLBACK( link_cb )
{
gaelco_serial_state *state = (gaelco_serial_state *) ptr;
shmem_lock(state->m_shmem);
state->m_out_ptr->cnt++;
sync_link(state);
shmem_unlock(state->m_shmem);
}
/** atomically allocate a Message-ID unless it's already present.
* to avoid texpire nuking the file right away, you must give another
* file name that is linked into the Message-ID directory.
* \return
* - 0 for success
* - 1 if MID already in use
* - -1 for OS trouble.
*/
int
msgid_allocate(const char *file /** file to link into message.id */,
const char *mid /** Non-NULL Message-ID to allocate */)
{
char *m = lookup(mid);
if (mkdir_parent(m, 0700))
return 0;
if (sync_link(file, m) == 0) {
return 0;
}
if (errno == EEXIST) return 1;
return -1;
}
