xnu-3789.70.16.tar.gz

[apple/xnu.git] / osfmk / ipc / mach_debug.c

diff --git a/osfmk/ipc/mach_debug.c b/osfmk/ipc/mach_debug.c
index 615d61f99c70294795661bfc64182bb3b19aac65..972073a71e512a528ed6888a8b4a7f6b47fbc755 100644 (file)
--- a/osfmk/ipc/mach_debug.c
+++ b/osfmk/ipc/mach_debug.c
@@ -84,6 +84,8 @@
 #include <ipc/ipc_hash.h>
 #include <ipc/ipc_table.h>
 #include <ipc/ipc_right.h>
+
+#include <security/mac_mach_internal.h>
 #endif
 
 /*
@@ -186,6 +188,12 @@ mach_port_space_info(
        if (space == IS_NULL)
                return KERN_INVALID_TASK;
 
+#if !(DEVELOPMENT || DEBUG) && CONFIG_MACF
+       const boolean_t dbg_ok = (mac_task_check_expose_task(kernel_task) == 0);
+#else
+       const boolean_t dbg_ok = TRUE;
+#endif
+
        /* start with in-line memory */
 
        table_size = 0;
@@ -200,8 +208,10 @@ mach_port_space_info(
                        return KERN_INVALID_TASK;
                }
 
-               table_size_needed = round_page(space->is_table_size
-                                              * sizeof(ipc_info_name_t));
+               table_size_needed =
+                       vm_map_round_page((space->is_table_size
+                                          * sizeof(ipc_info_name_t)),
+                                         VM_MAP_PAGE_MASK(ipc_kernel_map));
 
                if (table_size_needed == table_size)
                        break;
@@ -211,7 +221,7 @@ mach_port_space_info(
                if (table_size != table_size_needed) {
                        if (table_size != 0)
                                kmem_free(ipc_kernel_map, table_addr, table_size);
-                       kr = kmem_alloc(ipc_kernel_map, &table_addr, table_size_needed);
+                       kr = kmem_alloc(ipc_kernel_map, &table_addr, table_size_needed, VM_KERN_MEMORY_IPC);
                        if (kr != KERN_SUCCESS) {
                                return KERN_RESOURCE_SHORTAGE;
                        }
@@ -237,10 +247,11 @@ mach_port_space_info(
 
                bits = entry->ie_bits;
                iin->iin_name = MACH_PORT_MAKE(index, IE_BITS_GEN(bits));
+               iin->iin_collision = 0;
                iin->iin_type = IE_BITS_TYPE(bits);
                if ((entry->ie_bits & MACH_PORT_TYPE_PORT_RIGHTS) != MACH_PORT_TYPE_NONE &&
                    entry->ie_request != IE_REQ_NONE) {
-                       ipc_port_t port = (ipc_port_t) entry->ie_object;
+                       __IGNORE_WCASTALIGN(ipc_port_t port = (ipc_port_t) entry->ie_object);
 
                        assert(IP_VALID(port));
                        ip_lock(port);
@@ -249,7 +260,7 @@ mach_port_space_info(
                }
 
                iin->iin_urefs = IE_BITS_UREFS(bits);
-               iin->iin_object = (natural_t)VM_KERNEL_ADDRPERM((uintptr_t)entry->ie_object);
+               iin->iin_object = (dbg_ok) ? (natural_t)VM_KERNEL_ADDRPERM((uintptr_t)entry->ie_object) : 0;
                iin->iin_next = entry->ie_next;
                iin->iin_hash = entry->ie_index;
        }
@@ -258,15 +269,23 @@ mach_port_space_info(
 
        /* prepare the table out-of-line data for return */
        if (table_size > 0) {
-               if (table_size > infop->iis_table_size * sizeof(ipc_info_name_t))
-                       bzero((char *)&table_info[infop->iis_table_size],
-                             table_size - infop->iis_table_size * sizeof(ipc_info_name_t));
+               vm_size_t used_table_size;
 
-               kr = vm_map_unwire(ipc_kernel_map, vm_map_trunc_page(table_addr),
-                                  vm_map_round_page(table_addr + table_size), FALSE);
+               used_table_size = infop->iis_table_size * sizeof(ipc_info_name_t);
+               if (table_size > used_table_size)
+                       bzero((char *)&table_info[infop->iis_table_size],
+                             table_size - used_table_size);
+
+               kr = vm_map_unwire(
+                       ipc_kernel_map,
+                       vm_map_trunc_page(table_addr,
+                                         VM_MAP_PAGE_MASK(ipc_kernel_map)),
+                       vm_map_round_page(table_addr + table_size,
+                                         VM_MAP_PAGE_MASK(ipc_kernel_map)),
+                       FALSE);
                assert(kr == KERN_SUCCESS);
                kr = vm_map_copyin(ipc_kernel_map, (vm_map_address_t)table_addr, 
-                                  (vm_map_size_t)table_size, TRUE, &copy);
+                                  (vm_map_size_t)used_table_size, TRUE, &copy);
                assert(kr == KERN_SUCCESS);
                *tablep = (ipc_info_name_t *)copy;
                *tableCntp = infop->iis_table_size;
@@ -282,6 +301,56 @@ mach_port_space_info(
 }
 #endif /* MACH_IPC_DEBUG */
 
+/*
+ *     Routine:        mach_port_space_basic_info
+ *     Purpose:
+ *             Returns basic information about an IPC space.
+ *     Conditions:
+ *             Nothing locked.
+ *     Returns:
+ *             KERN_SUCCESS            Returned information.
+ *             KERN_FAILURE            The call is not supported.
+ *             KERN_INVALID_TASK       The space is dead.
+ */
+
+#if !MACH_IPC_DEBUG
+kern_return_t
+mach_port_space_basic_info(
+       __unused ipc_space_t                    space,
+       __unused ipc_info_space_basic_t         *infop)
+{
+        return KERN_FAILURE;
+}
+#else
+kern_return_t
+mach_port_space_basic_info(
+       ipc_space_t                     space,
+       ipc_info_space_basic_t          *infop)
+{
+       if (space == IS_NULL)
+               return KERN_INVALID_TASK;
+
+
+       is_read_lock(space);
+       if (!is_active(space)) {
+               is_read_unlock(space);
+               return KERN_INVALID_TASK;
+       }
+
+       /* get the basic space info */
+       infop->iisb_genno_mask = MACH_PORT_NGEN(MACH_PORT_DEAD);
+       infop->iisb_table_size = space->is_table_size;
+       infop->iisb_table_next = space->is_table_next->its_size;
+       infop->iisb_table_inuse = space->is_table_size - space->is_table_free - 1;
+       infop->iisb_reserved[0] = 0;
+       infop->iisb_reserved[1] = 0;
+
+       is_read_unlock(space);
+
+       return KERN_SUCCESS;
+}
+#endif /* MACH_IPC_DEBUG */
+
 /*
  *     Routine:        mach_port_dnrequest_info
  *     Purpose:
@@ -407,7 +476,7 @@ mach_port_kobject(
                return KERN_INVALID_RIGHT;
        }
 
-       port = (ipc_port_t) entry->ie_object;
+       __IGNORE_WCASTALIGN(port = (ipc_port_t) entry->ie_object);
        assert(port != IP_NULL);
 
        ip_lock(port);
@@ -422,9 +491,11 @@ mach_port_kobject(
        kaddr = (mach_vm_address_t)port->ip_kobject;
        ip_unlock(port);
 
+#if (DEVELOPMENT || DEBUG)
        if (0 != kaddr && is_ipc_kobject(*typep))
-               *addrp = VM_KERNEL_ADDRPERM(VM_KERNEL_UNSLIDE(kaddr));
+               *addrp = VM_KERNEL_UNSLIDE_OR_PERM(kaddr);
        else
+#endif
                *addrp = 0;
 
        return KERN_SUCCESS;