static
#endif /* !PTS_EXTERNAL */
int
pts_alloc(int fflags, struct thread *td, struct file *fp)
{
int unit, ok, error;
struct tty *tp;
struct pts_softc *psc;
struct proc *p = td->td_proc;
struct ucred *cred = td->td_ucred;
/* Resource limiting. */
PROC_LOCK(p);
error = racct_add(p, RACCT_NPTS, 1);
if (error != 0) {
PROC_UNLOCK(p);
return (EAGAIN);
}
ok = chgptscnt(cred->cr_ruidinfo, 1, lim_cur(td, RLIMIT_NPTS));
if (!ok) {
racct_sub(p, RACCT_NPTS, 1);
PROC_UNLOCK(p);
return (EAGAIN);
}
PROC_UNLOCK(p);
/* Try to allocate a new pts unit number. */
unit = alloc_unr(pts_pool);
if (unit < 0) {
racct_sub(p, RACCT_NPTS, 1);
chgptscnt(cred->cr_ruidinfo, -1, 0);
return (EAGAIN);
}
/* Allocate TTY and softc. */
psc = malloc(sizeof(struct pts_softc), M_PTS, M_WAITOK|M_ZERO);
cv_init(&psc->pts_inwait, "ptsin");
cv_init(&psc->pts_outwait, "ptsout");
psc->pts_unit = unit;
psc->pts_cred = crhold(cred);
tp = tty_alloc(&pts_class, psc);
knlist_init_mtx(&psc->pts_inpoll.si_note, tp->t_mtx);
knlist_init_mtx(&psc->pts_outpoll.si_note, tp->t_mtx);
/* Expose the slave device as well. */
tty_makedev(tp, td->td_ucred, "pts/%u", psc->pts_unit);
finit(fp, fflags, DTYPE_PTS, tp, &ptsdev_ops);
return (0);
}
/* Create a struct for tracking per-device suspend notification. */
static struct apm_clone_data *
apm_create_clone(struct cdev *dev, struct acpi_softc *acpi_sc)
{
struct apm_clone_data *clone;
clone = malloc(sizeof(*clone), M_APMDEV, M_WAITOK);
clone->cdev = dev;
clone->acpi_sc = acpi_sc;
clone->notify_status = APM_EV_NONE;
bzero(&clone->sel_read, sizeof(clone->sel_read));
knlist_init_mtx(&clone->sel_read.si_note, &acpi_mutex);
/*
* The acpi device is always managed by devd(8) and is considered
* writable (i.e., ack is required to allow suspend to proceed.)
*/
if (strcmp("acpi", devtoname(dev)) == 0)
clone->flags = ACPI_EVF_DEVD | ACPI_EVF_WRITE;
else
clone->flags = ACPI_EVF_NONE;
ACPI_LOCK(acpi);
STAILQ_INSERT_TAIL(&acpi_sc->apm_cdevs, clone, entries);
ACPI_UNLOCK(acpi);
return (clone);
}
int
pts_alloc_external(int fflags, struct thread *td, struct file *fp,
struct cdev *dev, const char *name)
{
int ok, error;
struct tty *tp;
struct pts_softc *psc;
struct proc *p = td->td_proc;
struct ucred *cred = td->td_ucred;
/* Resource limiting. */
PROC_LOCK(p);
error = racct_add(p, RACCT_NPTS, 1);
if (error != 0) {
PROC_UNLOCK(p);
return (EAGAIN);
}
ok = chgptscnt(cred->cr_ruidinfo, 1, lim_cur(td, RLIMIT_NPTS));
if (!ok) {
racct_sub(p, RACCT_NPTS, 1);
PROC_UNLOCK(p);
return (EAGAIN);
}
PROC_UNLOCK(p);
/* Allocate TTY and softc. */
psc = malloc(sizeof(struct pts_softc), M_PTS, M_WAITOK|M_ZERO);
cv_init(&psc->pts_inwait, "ptsin");
cv_init(&psc->pts_outwait, "ptsout");
psc->pts_unit = -1;
psc->pts_cdev = dev;
psc->pts_cred = crhold(cred);
tp = tty_alloc(&pts_class, psc);
knlist_init_mtx(&psc->pts_inpoll.si_note, tp->t_mtx);
knlist_init_mtx(&psc->pts_outpoll.si_note, tp->t_mtx);
/* Expose the slave device as well. */
tty_makedev(tp, td->td_ucred, "%s", name);
finit(fp, fflags, DTYPE_PTS, tp, &ptsdev_ops);
return (0);
}
static void
log_drvinit(void *unused)
{
cv_init(&log_wakeup, "klog");
callout_init_mtx(&logsoftc.sc_callout, &msgbuf_lock, 0);
knlist_init_mtx(&logsoftc.sc_selp.si_note, &msgbuf_lock);
make_dev_credf(MAKEDEV_ETERNAL, &log_cdevsw, 0, NULL, UID_ROOT,
GID_WHEEL, 0600, "klog");
}
void nm_os_selinfo_init(NM_SELINFO_T *si) {
struct mtx *m = &si->m;
mtx_init(m, "nm_kn_lock", NULL, MTX_DEF);
knlist_init_mtx(&si->si.si_note, m);
}
int
fork1(struct thread *td, struct fork_req *fr)
{
struct proc *p1, *newproc;
struct thread *td2;
struct vmspace *vm2;
struct file *fp_procdesc;
vm_ooffset_t mem_charged;
int error, nprocs_new, ok;
static int curfail;
static struct timeval lastfail;
int flags, pages;
flags = fr->fr_flags;
pages = fr->fr_pages;
if ((flags & RFSTOPPED) != 0)
MPASS(fr->fr_procp != NULL && fr->fr_pidp == NULL);
else
MPASS(fr->fr_procp == NULL);
#ifdef PAX_SEGVGUARD
if (td->td_proc->p_pid != 0) {
error = pax_segvguard_check(curthread, curthread->td_proc->p_textvp,
td->td_proc->p_comm);
if (error)
return (error);
}
#endif
/* Check for the undefined or unimplemented flags. */
if ((flags & ~(RFFLAGS | RFTSIGFLAGS(RFTSIGMASK))) != 0)
return (EINVAL);
/* Signal value requires RFTSIGZMB. */
if ((flags & RFTSIGFLAGS(RFTSIGMASK)) != 0 && (flags & RFTSIGZMB) == 0)
return (EINVAL);
/* Can't copy and clear. */
if ((flags & (RFFDG|RFCFDG)) == (RFFDG|RFCFDG))
return (EINVAL);
/* Check the validity of the signal number. */
if ((flags & RFTSIGZMB) != 0 && (u_int)RFTSIGNUM(flags) > _SIG_MAXSIG)
return (EINVAL);
if ((flags & RFPROCDESC) != 0) {
/* Can't not create a process yet get a process descriptor. */
if ((flags & RFPROC) == 0)
return (EINVAL);
/* Must provide a place to put a procdesc if creating one. */
if (fr->fr_pd_fd == NULL)
return (EINVAL);
}
p1 = td->td_proc;
/*
* Here we don't create a new process, but we divorce
* certain parts of a process from itself.
*/
if ((flags & RFPROC) == 0) {
if (fr->fr_procp != NULL)
*fr->fr_procp = NULL;
else if (fr->fr_pidp != NULL)
*fr->fr_pidp = 0;
return (fork_norfproc(td, flags));
}
fp_procdesc = NULL;
newproc = NULL;
vm2 = NULL;
/*
* Increment the nprocs resource before allocations occur.
* Although process entries are dynamically created, we still
* keep a global limit on the maximum number we will
* create. There are hard-limits as to the number of processes
* that can run, established by the KVA and memory usage for
* the process data.
*
* Don't allow a nonprivileged user to use the last ten
* processes; don't let root exceed the limit.
*/
nprocs_new = atomic_fetchadd_int(&nprocs, 1) + 1;
if ((nprocs_new >= maxproc - 10 && priv_check_cred(td->td_ucred,
PRIV_MAXPROC, 0) != 0) || nprocs_new >= maxproc) {
error = EAGAIN;
sx_xlock(&allproc_lock);
if (ppsratecheck(&lastfail, &curfail, 1)) {
printf("maxproc limit exceeded by uid %u (pid %d); "
"see tuning(7) and login.conf(5)\n",
td->td_ucred->cr_ruid, p1->p_pid);
}
sx_xunlock(&allproc_lock);
goto fail2;
}
/*
* If required, create a process descriptor in the parent first; we
* will abandon it if something goes wrong. We don't finit() until
* later.
*/
if (flags & RFPROCDESC) {
error = falloc_caps(td, &fp_procdesc, fr->fr_pd_fd, 0,
fr->fr_pd_fcaps);
if (error != 0)
goto fail2;
}
mem_charged = 0;
if (pages == 0)
pages = kstack_pages;
/* Allocate new proc. */
newproc = uma_zalloc(proc_zone, M_WAITOK);
td2 = FIRST_THREAD_IN_PROC(newproc);
if (td2 == NULL) {
td2 = thread_alloc(pages);
if (td2 == NULL) {
error = ENOMEM;
goto fail2;
}
proc_linkup(newproc, td2);
} else {
if (td2->td_kstack == 0 || td2->td_kstack_pages != pages) {
if (td2->td_kstack != 0)
vm_thread_dispose(td2);
if (!thread_alloc_stack(td2, pages)) {
error = ENOMEM;
goto fail2;
}
}
}
if ((flags & RFMEM) == 0) {
vm2 = vmspace_fork(p1->p_vmspace, &mem_charged);
if (vm2 == NULL) {
error = ENOMEM;
goto fail2;
}
if (!swap_reserve(mem_charged)) {
/*
* The swap reservation failed. The accounting
* from the entries of the copied vm2 will be
* substracted in vmspace_free(), so force the
* reservation there.
*/
swap_reserve_force(mem_charged);
error = ENOMEM;
goto fail2;
}
} else
vm2 = NULL;
/*
* XXX: This is ugly; when we copy resource usage, we need to bump
* per-cred resource counters.
*/
proc_set_cred_init(newproc, crhold(td->td_ucred));
/*
* Initialize resource accounting for the child process.
*/
error = racct_proc_fork(p1, newproc);
if (error != 0) {
error = EAGAIN;
goto fail1;
}
#ifdef MAC
mac_proc_init(newproc);
#endif
knlist_init_mtx(&newproc->p_klist, &newproc->p_mtx);
STAILQ_INIT(&newproc->p_ktr);
/* We have to lock the process tree while we look for a pid. */
sx_slock(&proctree_lock);
sx_xlock(&allproc_lock);
/*
* Increment the count of procs running with this uid. Don't allow
* a nonprivileged user to exceed their current limit.
*
* XXXRW: Can we avoid privilege here if it's not needed?
*/
error = priv_check_cred(td->td_ucred, PRIV_PROC_LIMIT, 0);
if (error == 0)
ok = chgproccnt(td->td_ucred->cr_ruidinfo, 1, 0);
else {
ok = chgproccnt(td->td_ucred->cr_ruidinfo, 1,
lim_cur(td, RLIMIT_NPROC));
}
if (ok) {
do_fork(td, fr, newproc, td2, vm2, fp_procdesc);
return (0);
}
error = EAGAIN;
sx_sunlock(&proctree_lock);
sx_xunlock(&allproc_lock);
#ifdef MAC
mac_proc_destroy(newproc);
#endif
racct_proc_exit(newproc);
fail1:
crfree(newproc->p_ucred);
newproc->p_ucred = NULL;
fail2:
if (vm2 != NULL)
vmspace_free(vm2);
uma_zfree(proc_zone, newproc);
if ((flags & RFPROCDESC) != 0 && fp_procdesc != NULL) {
fdclose(td, fp_procdesc, *fr->fr_pd_fd);
fdrop(fp_procdesc, td);
}
atomic_add_int(&nprocs, -1);
pause("fork", hz / 2);
return (error);
}
static int
cyapa_attach(device_t dev)
{
struct cyapa_softc *sc;
struct cyapa_cap cap;
int unit;
int addr;
sc = device_get_softc(dev);
sc->reporting_mode = 1;
unit = device_get_unit(dev);
addr = smbus_get_addr(dev);
if (init_device(dev, &cap, addr, 0))
return (ENXIO);
mtx_init(&sc->mutex, "cyapa", NULL, MTX_DEF);
sc->dev = dev;
sc->addr = addr;
knlist_init_mtx(&sc->selinfo.si_note, &sc->mutex);
sc->cap_resx = ((cap.max_abs_xy_high << 4) & 0x0F00) |
cap.max_abs_x_low;
sc->cap_resy = ((cap.max_abs_xy_high << 8) & 0x0F00) |
cap.max_abs_y_low;
sc->cap_phyx = ((cap.phy_siz_xy_high << 4) & 0x0F00) |
cap.phy_siz_x_low;
sc->cap_phyy = ((cap.phy_siz_xy_high << 8) & 0x0F00) |
cap.phy_siz_y_low;
sc->cap_buttons = cap.buttons;
device_printf(dev, "%5.5s-%6.6s-%2.2s buttons=%c%c%c res=%dx%d\n",
cap.prod_ida, cap.prod_idb, cap.prod_idc,
((cap.buttons & CYAPA_FNGR_LEFT) ? 'L' : '-'),
((cap.buttons & CYAPA_FNGR_MIDDLE) ? 'M' : '-'),
((cap.buttons & CYAPA_FNGR_RIGHT) ? 'R' : '-'),
sc->cap_resx, sc->cap_resy);
sc->hw.buttons = 5;
sc->hw.iftype = MOUSE_IF_PS2;
sc->hw.type = MOUSE_MOUSE;
sc->hw.model = MOUSE_MODEL_INTELLI;
sc->hw.hwid = addr;
sc->mode.protocol = MOUSE_PROTO_PS2;
sc->mode.rate = 100;
sc->mode.resolution = 4;
sc->mode.accelfactor = 1;
sc->mode.level = 0;
sc->mode.packetsize = MOUSE_PS2_PACKETSIZE;
sc->drag_state = D_IDLE;
sc->draglock_ticks = -1;
sc->dragwait_ticks = -1;
sc->tft_state = T_IDLE;
sc->tft_ticks = -1;
sc->send_but = 0;
/* Setup input event tracking */
cyapa_set_power_mode(sc, CMD_POWER_MODE_IDLE);
/* Start the polling thread */
kthread_add(cyapa_poll_thread, sc, NULL, NULL,
0, 0, "cyapa-poll");
sc->devnode = make_dev(&cyapa_cdevsw, unit,
UID_ROOT, GID_WHEEL, 0600, "cyapa%d", unit);
sc->devnode->si_drv1 = sc;
return (0);
}
