/*
* sys_lfs_segwait:
*
* System call wrapper around lfs_segwait().
*
* 0 on success
* 1 on timeout
* -1/errno is return on error.
*/
int
sys___lfs_segwait50(struct lwp *l, const struct sys___lfs_segwait50_args *uap,
register_t *retval)
{
/* {
syscallarg(fsid_t *) fsidp;
syscallarg(struct timeval *) tv;
} */
struct timeval atv;
fsid_t fsid;
int error;
/* XXX need we be su to segwait? */
error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS,
KAUTH_REQ_SYSTEM_LFS_SEGWAIT, NULL, NULL, NULL);
if (error)
return (error);
if ((error = copyin(SCARG(uap, fsidp), &fsid, sizeof(fsid_t))) != 0)
return (error);
if (SCARG(uap, tv)) {
error = copyin(SCARG(uap, tv), &atv, sizeof(struct timeval));
if (error)
return (error);
if (itimerfix(&atv))
return (EINVAL);
} else /* NULL or invalid */
atv.tv_sec = atv.tv_usec = 0;
return lfs_segwait(&fsid, &atv);
}
/*
* Low level support for sleep/wakeup paradigm
* If a timeout is specified:
* returns 0 if wakeup
* returns EAGAIN if timed out
* returns EINVAL if error
*
* If a timeout is not specified:
*
* returns time waiting in ticks.
*/
int
sys_thr_sleep(struct thr_sleep_args *uap)
{
struct proc *p = curproc;
struct lwp *lp = curthread->td_lwp;
int sleepstart;
struct timespec ts;
struct timeval atv;
int error, timo;
timo = 0;
if (uap->timeout != 0) {
/*
* Get timespec struct
*/
if ((error = copyin(uap->timeout, &ts, sizeof(ts))) != 0) {
p->p_wakeup = 0;
return error;
}
if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000) {
p->p_wakeup = 0;
return (EINVAL);
}
TIMESPEC_TO_TIMEVAL(&atv, &ts);
if (itimerfix(&atv)) {
p->p_wakeup = 0;
return (EINVAL);
}
timo = tvtohz_high(&atv);
}
uap->sysmsg_result = 0;
if (p->p_wakeup == 0) {
sleepstart = ticks;
lp->lwp_flag |= LWP_SINTR;
error = tsleep(p, 0, "thrslp", timo);
lp->lwp_flag &= ~LWP_SINTR;
if (error == EWOULDBLOCK) {
p->p_wakeup = 0;
uap->sysmsg_result = EAGAIN;
return 0;
}
if (uap->timeout == 0)
uap->sysmsg_result = ticks - sleepstart;
}
p->p_wakeup = 0;
return (0);
}
/* ARGSUSED */
int
bpfioctl(dev_t dev, u_long cmd, caddr_t addr, __unused int flags,
struct proc *p)
{
struct bpf_d *d;
int error = 0;
lck_mtx_lock(bpf_mlock);
d = bpf_dtab[minor(dev)];
if (d == 0 || d == (void *)1) {
lck_mtx_unlock(bpf_mlock);
return (ENXIO);
}
switch (cmd) {
default:
error = EINVAL;
break;
/*
* Check for read packet available.
*/
case FIONREAD:
{
int n;
n = d->bd_slen;
if (d->bd_hbuf)
n += d->bd_hlen;
*(int *)addr = n;
break;
}
case SIOCGIFADDR:
{
struct ifnet *ifp;
if (d->bd_bif == 0)
error = EINVAL;
else {
ifp = d->bd_bif->bif_ifp;
error = ifnet_ioctl(ifp, 0, cmd, addr);
}
break;
}
/*
* Get buffer len [for read()].
*/
case BIOCGBLEN:
*(u_int *)addr = d->bd_bufsize;
break;
/*
* Set buffer length.
*/
case BIOCSBLEN:
#if BSD < 199103
error = EINVAL;
#else
if (d->bd_bif != 0)
error = EINVAL;
else {
u_int size = *(u_int *)addr;
if (size > bpf_maxbufsize)
*(u_int *)addr = size = bpf_maxbufsize;
else if (size < BPF_MINBUFSIZE)
*(u_int *)addr = size = BPF_MINBUFSIZE;
d->bd_bufsize = size;
}
#endif
break;
/*
* Set link layer read filter.
*/
case BIOCSETF32: {
struct bpf_program32 *prg32 = (struct bpf_program32 *)addr;
error = bpf_setf(d, prg32->bf_len,
CAST_USER_ADDR_T(prg32->bf_insns));
break;
}
case BIOCSETF64: {
struct bpf_program64 *prg64 = (struct bpf_program64 *)addr;
error = bpf_setf(d, prg64->bf_len, prg64->bf_insns);
break;
}
/*
* Flush read packet buffer.
*/
case BIOCFLUSH:
reset_d(d);
break;
/*
* Put interface into promiscuous mode.
*/
case BIOCPROMISC:
if (d->bd_bif == 0) {
/*
* No interface attached yet.
*/
error = EINVAL;
break;
}
if (d->bd_promisc == 0) {
lck_mtx_unlock(bpf_mlock);
error = ifnet_set_promiscuous(d->bd_bif->bif_ifp, 1);
lck_mtx_lock(bpf_mlock);
if (error == 0)
d->bd_promisc = 1;
}
break;
/*
* Get device parameters.
*/
case BIOCGDLT:
if (d->bd_bif == 0)
error = EINVAL;
else
*(u_int *)addr = d->bd_bif->bif_dlt;
break;
/*
* Get a list of supported data link types.
*/
case BIOCGDLTLIST:
if (d->bd_bif == NULL) {
error = EINVAL;
} else {
error = bpf_getdltlist(d,
(struct bpf_dltlist *)addr, p);
}
break;
/*
* Set data link type.
*/
case BIOCSDLT:
if (d->bd_bif == NULL)
error = EINVAL;
else
error = bpf_setdlt(d, *(u_int *)addr);
break;
/*
* Get interface name.
*/
case BIOCGETIF:
if (d->bd_bif == 0)
error = EINVAL;
else {
struct ifnet *const ifp = d->bd_bif->bif_ifp;
struct ifreq *const ifr = (struct ifreq *)addr;
snprintf(ifr->ifr_name, sizeof(ifr->ifr_name),
"%s%d", ifp->if_name, ifp->if_unit);
}
break;
/*
* Set interface.
*/
case BIOCSETIF: {
ifnet_t ifp;
ifp = ifunit(((struct ifreq *)addr)->ifr_name);
if (ifp == NULL)
error = ENXIO;
else
error = bpf_setif(d, ifp, 0);
break;
}
/*
* Set read timeout.
*/
case BIOCSRTIMEOUT:
{
struct BPF_TIMEVAL *_tv = (struct BPF_TIMEVAL *)addr;
struct timeval tv;
tv.tv_sec = _tv->tv_sec;
tv.tv_usec = _tv->tv_usec;
/*
* Subtract 1 tick from tvtohz() since this isn't
* a one-shot timer.
*/
if ((error = itimerfix(&tv)) == 0)
d->bd_rtout = tvtohz(&tv) - 1;
break;
}
/*
* Get read timeout.
*/
case BIOCGRTIMEOUT:
{
struct BPF_TIMEVAL *tv = (struct BPF_TIMEVAL *)addr;
tv->tv_sec = d->bd_rtout / hz;
tv->tv_usec = (d->bd_rtout % hz) * tick;
break;
}
/*
* Get packet stats.
*/
case BIOCGSTATS:
{
struct bpf_stat *bs = (struct bpf_stat *)addr;
bs->bs_recv = d->bd_rcount;
bs->bs_drop = d->bd_dcount;
break;
}
/*
* Set immediate mode.
*/
case BIOCIMMEDIATE:
d->bd_immediate = *(u_int *)addr;
break;
case BIOCVERSION:
{
struct bpf_version *bv = (struct bpf_version *)addr;
bv->bv_major = BPF_MAJOR_VERSION;
bv->bv_minor = BPF_MINOR_VERSION;
break;
}
/*
* Get "header already complete" flag
*/
case BIOCGHDRCMPLT:
*(u_int *)addr = d->bd_hdrcmplt;
break;
/*
* Set "header already complete" flag
*/
case BIOCSHDRCMPLT:
d->bd_hdrcmplt = *(u_int *)addr ? 1 : 0;
break;
/*
* Get "see sent packets" flag
*/
case BIOCGSEESENT:
*(u_int *)addr = d->bd_seesent;
break;
/*
* Set "see sent packets" flag
*/
case BIOCSSEESENT:
d->bd_seesent = *(u_int *)addr;
break;
case FIONBIO: /* Non-blocking I/O */
break;
case FIOASYNC: /* Send signal on receive packets */
d->bd_async = *(int *)addr;
break;
#ifndef __APPLE__
case FIOSETOWN:
error = fsetown(*(int *)addr, &d->bd_sigio);
break;
case FIOGETOWN:
*(int *)addr = fgetown(d->bd_sigio);
break;
/* This is deprecated, FIOSETOWN should be used instead. */
case TIOCSPGRP:
error = fsetown(-(*(int *)addr), &d->bd_sigio);
break;
/* This is deprecated, FIOGETOWN should be used instead. */
case TIOCGPGRP:
*(int *)addr = -fgetown(d->bd_sigio);
break;
#endif
case BIOCSRSIG: /* Set receive signal */
{
u_int sig;
sig = *(u_int *)addr;
if (sig >= NSIG)
error = EINVAL;
else
d->bd_sig = sig;
break;
}
case BIOCGRSIG:
*(u_int *)addr = d->bd_sig;
break;
}
lck_mtx_unlock(bpf_mlock);
return (error);
}
