void sysctl_register_oid(struct sysctl_oid *oidp)
{
struct sysctl_oid_list *parent = oidp->oid_parent;
struct sysctl_oid *p;
struct sysctl_oid *q;
int n;
funnel_t *fnl;
fnl = spl_kernel_funnel();
/*
* If this oid has a number OID_AUTO, give it a number which
* is greater than any current oid. Make sure it is at least
* 100 to leave space for pre-assigned oid numbers.
*/
/* sysctl_sysctl_debug_dump_node(parent, 3); */
if (oidp->oid_number == OID_AUTO) {
/* First, find the highest oid in the parent list >99 */
n = 99;
SLIST_FOREACH(p, parent, oid_link) {
if (p->oid_number > n)
n = p->oid_number;
}
oidp->oid_number = n + 1;
}
void sysctl_register_oid(struct sysctl_oid *oidp)
{
struct sysctl_oid_list *parent = oidp->oid_parent;
struct sysctl_oid *p;
struct sysctl_oid *q;
int n;
funnel_t *fnl;
fnl = spl_kernel_funnel();
if(sysctl_geometry_lock == NULL)
{
/* Initialise the geometry lock for reading/modifying the sysctl tree
* This is done here because IOKit registers some sysctls before bsd_init()
* calls sysctl_register_fixed().
*/
lck_grp_t* lck_grp = lck_grp_alloc_init("sysctl", NULL);
sysctl_geometry_lock = lck_rw_alloc_init(lck_grp, NULL);
}
/* Get the write lock to modify the geometry */
lck_rw_lock_exclusive(sysctl_geometry_lock);
/*
* If this oid has a number OID_AUTO, give it a number which
* is greater than any current oid. Make sure it is at least
* OID_AUTO_START to leave space for pre-assigned oid numbers.
*/
if (oidp->oid_number == OID_AUTO) {
/* First, find the highest oid in the parent list >OID_AUTO_START-1 */
n = OID_AUTO_START;
SLIST_FOREACH(p, parent, oid_link) {
if (p->oid_number > n)
n = p->oid_number;
}
oidp->oid_number = n + 1;
}
