/*
* Encode result of a TEST/TEST_MSG call
*/
static __be32 *
nlm_encode_testres(__be32 *p, struct nlm_res *resp)
{
s32 start, len;
if (!(p = nlm_encode_cookie(p, &resp->cookie)))
return NULL;
*p++ = resp->status;
if (resp->status == nlm_lck_denied) {
struct file_lock *fl = &resp->lock.fl;
*p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one;
*p++ = htonl(resp->lock.svid);
/* Encode owner handle. */
if (!(p = xdr_encode_netobj(p, &resp->lock.oh)))
return NULL;
start = loff_t_to_s32(fl->fl_start);
if (fl->fl_end == OFFSET_MAX)
len = 0;
else
len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
*p++ = htonl(start);
*p++ = htonl(len);
}
return p;
}
/*
* Encode a lock as part of an NLM call
*/
static __be32 *
nlm_encode_lock(__be32 *p, struct nlm_lock *lock)
{
struct file_lock *fl = &lock->fl;
__s32 start, len;
if (!(p = xdr_encode_string(p, lock->caller))
|| !(p = nlm_encode_fh(p, &lock->fh))
|| !(p = nlm_encode_oh(p, &lock->oh)))
return NULL;
if (fl->fl_start > NLM_OFFSET_MAX
|| (fl->fl_end > NLM_OFFSET_MAX && fl->fl_end != OFFSET_MAX))
return NULL;
start = loff_t_to_s32(fl->fl_start);
if (fl->fl_end == OFFSET_MAX)
len = 0;
else
len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
*p++ = htonl(lock->svid);
*p++ = htonl(start);
*p++ = htonl(len);
return p;
}
static void nlm_compute_offsets(const struct nlm_lock *lock,
u32 *l_offset, u32 *l_len)
{
const struct file_lock *fl = &lock->fl;
BUG_ON(fl->fl_start > NLM_OFFSET_MAX);
BUG_ON(fl->fl_end > NLM_OFFSET_MAX &&
fl->fl_end != OFFSET_MAX);
*l_offset = loff_t_to_s32(fl->fl_start);
if (fl->fl_end == OFFSET_MAX)
*l_len = 0;
else
*l_len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
}