void*
rpal_memory_alloc
(
uint32_t size
)
{
void* ptr = NULL;
unsigned char* realPtr = NULL;
if( 0 == g_mem_tag )
{
g_mem_tag = OSMalloc_Tagalloc( "hcp_hbs_acq", 0 );
}
size += sizeof( uint32_t );
realPtr = OSMalloc( size, g_mem_tag );
if( NULL != realPtr )
{
*(uint32_t*)realPtr = size;
ptr = realPtr + sizeof( uint32_t );
}
return ptr;
}
// Driver entry point. Initializes globals and registers driver node in /dev.
kern_return_t pmem_start(kmod_info_t * ki, void *d) {
int error = 0;
pmem_log("Loading /dev/%s driver", pmem_pmem_devname);
// Memory allocations are tagged to prevent leaks
pmem_tag = OSMalloc_Tagalloc(pmem_tagname, OSMT_DEFAULT);
// Allocate one page for zero padding of illegal read requests
pmem_zero_page = static_cast<uint8_t *>(OSMalloc(PAGE_SIZE, pmem_tag));
if (pmem_zero_page == NULL) {
pmem_error("Failed to allocate memory for page buffer");
return pmem_cleanup(KERN_FAILURE);
}
bzero(pmem_zero_page, PAGE_SIZE);
// Access the boot arguments through the platform export,
// and parse the systems physical memory configuration.
boot_args * ba = reinterpret_cast<boot_args *>(PE_state.bootArgs);
pmem_physmem_size = ba->PhysicalMemorySize;
pmem_mmap = reinterpret_cast<EfiMemoryRange *>(ba->MemoryMap +
pmem_kernel_voffset);
pmem_mmap_desc_size = ba->MemoryMapDescriptorSize;
pmem_mmap_size = ba->MemoryMapSize;
pmem_log("Size of physical memory:%lld", pmem_physmem_size);
pmem_log("Size of physical pages:%d (PAGE_SHIFT=%d, PAGE_MASK=%#016x)",
PAGE_SIZE, PAGE_SHIFT, PAGE_MASK);
pmem_log("Phys. Memory map at:%#016llx (size:%lld desc_size:%d)",
pmem_mmap, pmem_mmap_size, pmem_mmap_desc_size);
pmem_log("Number of segments in memory map: %d",
pmem_mmap_size / pmem_mmap_desc_size);
// Install switch table
pmem_devmajor = cdevsw_add(-1, &pmem_cdevsw);
if (pmem_devmajor == -1) {
pmem_error("Failed to create character device");
return pmem_cleanup(KERN_FAILURE);
}
// Create physical memory device file
pmem_log("Adding node /dev/%s", pmem_pmem_devname);
pmem_devpmemnode = devfs_make_node(makedev(pmem_devmajor,
pmem_dev_pmem_minor),
DEVFS_CHAR,
UID_ROOT,
GID_WHEEL,
0660,
pmem_pmem_devname);
if (pmem_devpmemnode == NULL) {
pmem_error("Failed to create /dev/%s node", pmem_pmem_devname);
return pmem_cleanup(KERN_FAILURE);
}
pmem_log("obtaining kernel dtb pointer");
__asm__ __volatile__("movq %%cr3, %0" :"=r"(pmem_dtb));
// Only bits 51-12 (inclusive) in cr3 are part of the dtb pointer
pmem_dtb &= ~PAGE_MASK;
pmem_log("kernel dtb: %#016llx", pmem_dtb);
pmem_log("initializing pte_mmap module");
pmem_log("pmem driver loaded, physical memory available in /dev/%s",
pmem_pmem_devname);
return error;
}
errno_t
utun_register_control(void)
{
struct kern_ctl_reg kern_ctl;
errno_t result = 0;
/* Create a tag to allocate memory */
utun_malloc_tag = OSMalloc_Tagalloc(UTUN_CONTROL_NAME, OSMT_DEFAULT);
/* Find a unique value for our interface family */
result = mbuf_tag_id_find(UTUN_CONTROL_NAME, &utun_family);
if (result != 0) {
printf("utun_register_control - mbuf_tag_id_find_internal failed: %d\n", result);
return result;
}
bzero(&kern_ctl, sizeof(kern_ctl));
strlcpy(kern_ctl.ctl_name, UTUN_CONTROL_NAME, sizeof(kern_ctl.ctl_name));
kern_ctl.ctl_name[sizeof(kern_ctl.ctl_name) - 1] = 0;
kern_ctl.ctl_flags = CTL_FLAG_PRIVILEGED | CTL_FLAG_REG_EXTENDED; /* Require root */
kern_ctl.ctl_sendsize = 512 * 1024;
kern_ctl.ctl_recvsize = 512 * 1024;
kern_ctl.ctl_connect = utun_ctl_connect;
kern_ctl.ctl_disconnect = utun_ctl_disconnect;
kern_ctl.ctl_send = utun_ctl_send;
kern_ctl.ctl_setopt = utun_ctl_setopt;
kern_ctl.ctl_getopt = utun_ctl_getopt;
kern_ctl.ctl_rcvd = utun_ctl_rcvd;
utun_ctl_init_crypto();
result = ctl_register(&kern_ctl, &utun_kctlref);
if (result != 0) {
printf("utun_register_control - ctl_register failed: %d\n", result);
return result;
}
/* Register the protocol plumbers */
if ((result = proto_register_plumber(PF_INET, utun_family,
utun_attach_proto, NULL)) != 0) {
printf("utun_register_control - proto_register_plumber(PF_INET, %d) failed: %d\n",
utun_family, result);
ctl_deregister(utun_kctlref);
return result;
}
/* Register the protocol plumbers */
if ((result = proto_register_plumber(PF_INET6, utun_family,
utun_attach_proto, NULL)) != 0) {
proto_unregister_plumber(PF_INET, utun_family);
ctl_deregister(utun_kctlref);
printf("utun_register_control - proto_register_plumber(PF_INET6, %d) failed: %d\n",
utun_family, result);
return result;
}
return 0;
}
void
zfs_context_init(void)
{
uint64_t kern_mem_size;
zfs_lock_attr = lck_attr_alloc_init();
zfs_group_attr = lck_grp_attr_alloc_init();
#if 0
lck_attr_setdebug(zfs_lock_attr);
#endif
zfs_mutex_group = lck_grp_alloc_init("zfs-mutex", zfs_group_attr);
zfs_rwlock_group = lck_grp_alloc_init("zfs-rwlock", zfs_group_attr);
zfs_spinlock_group = lck_grp_alloc_init("zfs-spinlock", zfs_group_attr);
zfs_kmem_alloc_tag = OSMalloc_Tagalloc("ZFS general purpose",
OSMT_DEFAULT);
max_ncpus = 1;
/* kernel memory space is 4 GB max */
kern_mem_size = MIN(max_mem, (uint64_t)0x0FFFFFFFFULL);
/* Calculate number of pages of memory on the system */
physmem = kern_mem_size / PAGE_SIZE;
/* Constrain our memory use on smaller memory systems */
if (kern_mem_size <= 0x20000000)
zfs_footprint.maximum = kern_mem_size / 7; /* 512MB: ~15 % */
else if (kern_mem_size <= 0x30000000)
zfs_footprint.maximum = kern_mem_size / 5; /* 768MB: ~20 % */
else if (kern_mem_size <= 0x40000000)
zfs_footprint.maximum = kern_mem_size / 3; /* 1GB: ~33 % */
else /* set to 1GB limit maximum*/
zfs_footprint.maximum = MIN((kern_mem_size / 2), 0x40000000);
recalc_target_footprint(100);
printf("zfs_context_init: footprint.maximum=%lu, footprint.target=%lu\n",
zfs_footprint.maximum, zfs_footprint.target);
}
// Driver entry point. Initializes globals and registers driver node in /dev.
kern_return_t chipsec_start(kmod_info_t * ki, void *d) {
int error = 0;
pmem_log("Loading /dev/%s driver", chipsec_devname);
// Memory allocations are tagged to prevent leaks
pmem_tag = OSMalloc_Tagalloc(pmem_tagname, OSMT_DEFAULT);
// Allocate one page for zero padding of illegal read requests
pmem_zero_page = static_cast<uint8_t *>(OSMalloc(PAGE_SIZE, pmem_tag));
if (pmem_zero_page == NULL) {
pmem_error("Failed to allocate memory for page buffer");
return pmem_cleanup(KERN_FAILURE);
}
bzero(pmem_zero_page, PAGE_SIZE);
// Install the character device
chipsec_dev_major = cdevsw_add(-1, &pmem_cdevsw);
if (chipsec_dev_major == -1) {
pmem_error("Failed to create character device");
return pmem_cleanup(KERN_FAILURE);
}
// Create physical memory device file
pmem_log("Adding node /dev/%s", chipsec_devname);
pmem_devpmemnode = devfs_make_node(makedev(chipsec_dev_major,
chipsec_dev_minor),
DEVFS_CHAR,
UID_ROOT,
GID_WHEEL,
0660,
chipsec_devname);
if (pmem_devpmemnode == NULL) {
pmem_error("Failed to create /dev/%s node", chipsec_devname);
return pmem_cleanup(KERN_FAILURE);
}
pmem_log("pmem driver loaded, physical memory available in /dev/%s",
chipsec_devname);
return error;
}
//start method
bool com_objective_see_firewall::start(IOService *provider)
{
//return var
bool result = false;
//dbg msg
IOLog("LULU: in %s\n", __FUNCTION__);
//super
if(TRUE != super::start(provider))
{
//bail
goto bail;
}
//alloc memory tag
allocTag = OSMalloc_Tagalloc(BUNDLE_ID, OSMT_DEFAULT);
if(NULL == allocTag)
{
//err msg
IOLog("LULU ERROR: OSMalloc_Tagalloc() failed\n");
//bail
goto bail;
}
//alloc
// ->rule locks, etc
if(true != initRules())
{
//err msg
IOLog("LULU ERROR: failed to init rules/locks\n");
//bail
goto bail;
}
//init shared data queue
sharedDataQueue = IOSharedDataQueue::withCapacity(sizeof(firewallEvent) * (MAX_FIREWALL_EVENTS + DATA_QUEUE_ENTRY_HEADER_SIZE));
if(NULL == sharedDataQueue)
{
//bail
goto bail;
}
//get memory descriptor
sharedMemoryDescriptor = sharedDataQueue->getMemoryDescriptor();
if(NULL == sharedMemoryDescriptor)
{
//bail
goto bail;
}
//register service
// allows clients to connect
registerService();
//dbg msg
IOLog("LULU: registered service %s\n", LULU_SERVICE_NAME);
//set user class
setProperty("IOUserClientClass", LULU_USER_CLIENT_CLASS);
//init broadcast
if(true != initBroadcast())
{
//err msg
IOLog("LULU ERROR: initBroadcast() failed\n");
//bail
goto bail;
}
//all happy
result = true;
bail:
return result;
}