int
_lock_flush(struct fdinfo *fio, struct ffsw *stat)
{
struct fdinfo *llfio;
int ret;
llfio = fio->fioptr;
LYR_LOCK(fio);
ret = XRCALL(llfio, flushrtn) llfio, stat);
LYR_UNLOCK(fio);
return(ret);
}
/*
* lock listio requests
* The lock layer will be called only if the lower layer can handle listio
* requests.
*/
_lock_listio(
int cmd, /* LC_WAIT or LC_START */
struct fflistreq *list, /* list of requests (see fflistio) */
int nreq, /* number of requests */
struct ffsw *stat) /* status structure */
{
int i;
struct fdinfo *llfio;
struct fdinfo *first_fio;
struct fdinfo *fio;
struct fflistreq *copy; /* copy of the list of requests */
int numdone;
int curent;
int pos;
bitptr buf;
int nb;
int zero;
int ret;
int nstr;
struct ffsw locstat;
struct ffsw *istat;
if (nreq == 0)
return(0);
first_fio = GETIOB(list[0].li_fildes);
for (i = 0; i < nreq; i++) {
fio = GETIOB(list[i].li_fildes);
if (fio != first_fio) {
_SETERROR(stat, FDC_ERR_LSTIO, 0);
return (-1);
}
}
llfio = first_fio->fioptr;
if (llfio->can_listio) {
copy = malloc(nreq * sizeof(*list));
if (copy == NULL)
ERETURN(stat, FDC_ERR_NOMEM, 0);
for (i = 0; i < nreq; i++) {
copy[i] = list[i]; /* copy the entry */
copy[i].li_fildes = (int)llfio;
}
LYR_LOCK(fio);
numdone = XRCALL(llfio, listiortn) cmd, copy, nreq, stat);
LYR_UNLOCK(fio);
free(copy);
return(numdone);
}
_ffseek_t
_lock_seek(struct fdinfo *fio, off_t pos, int whence, struct ffsw *stat)
{
struct fdinfo *llfio;
_ffseek_t ret;
llfio = fio->fioptr;
LYR_LOCK(fio);
ret = XRCALL(llfio, seekrtn) llfio, pos, whence, stat);
LYR_UNLOCK(fio);
return(ret);
}
ssize_t
_lock_readc(struct fdinfo *fio, bitptr bufptr, size_t nbytes,
struct ffsw *stat, int fulp)
{
struct fdinfo *llfio;
ssize_t ret;
llfio = fio->fioptr;
LYR_LOCK(fio);
ret = XRCALL(llfio, readcrtn)llfio, bufptr, nbytes, stat, fulp);
LYR_UNLOCK(fio);
return(ret);
}
ssize_t
_lock_writea(struct fdinfo *fio, bitptr bufptr, size_t nbytes,
struct ffsw *stat, int fulp, int *ubc)
{
struct fdinfo *llfio;
ssize_t ret;
llfio = fio->fioptr;
LYR_LOCK(fio);
ret = XRCALL(llfio, writeartn) llfio, bufptr, nbytes, stat, fulp, ubc);
LYR_UNLOCK(fio);
return(ret);
}