xnu-3789.31.2.tar.gz

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

diff --git a/osfmk/ipc/ipc_init.c b/osfmk/ipc/ipc_init.c
index 7417911d15aefd045af0cae3c1a2ab01afc2405f..d81098ce99fe28a456af3681823ba5ed9ecc29c6 100644 (file)
--- a/osfmk/ipc/ipc_init.c
+++ b/osfmk/ipc/ipc_init.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -74,10 +74,12 @@
 #include <mach_rt.h>
 
 #include <mach/port.h>
+#include <mach/message.h>
 #include <mach/kern_return.h>
 
 #include <kern/kern_types.h>
 #include <kern/kalloc.h>
+#include <kern/simple_lock.h>
 #include <kern/mach_param.h>
 #include <kern/ipc_host.h>
 #include <kern/ipc_mig.h>
@@ -99,20 +101,28 @@
 #include <ipc/ipc_hash.h>
 #include <ipc/ipc_init.h>
 #include <ipc/ipc_table.h>
+#include <ipc/ipc_voucher.h>
+#include <ipc/ipc_importance.h>
 
 #include <mach/machine/ndr_def.h>   /* NDR_record */
-#include <ipc/ipc_labelh.h>
 
 vm_map_t ipc_kernel_map;
 vm_size_t ipc_kernel_map_size = 1024 * 1024;
 
+/* values to limit physical copy out-of-line memory descriptors */
 vm_map_t ipc_kernel_copy_map;
 #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
 vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
-vm_size_t ipc_kmsg_max_vm_space = (IPC_KERNEL_COPY_MAP_SIZE * 7)/8;
+vm_size_t ipc_kmsg_max_vm_space = ((IPC_KERNEL_COPY_MAP_SIZE * 7) / 8);
+
+/* 
+ * values to limit inline message body handling
+ * avoid copyin/out limits - even after accounting for maximum descriptor expansion.
+ */
+#define IPC_KMSG_MAX_SPACE (64 * 1024 * 1024) /* keep in sync with COPYSIZELIMIT_PANIC */
+vm_size_t ipc_kmsg_max_body_space = ((IPC_KMSG_MAX_SPACE * 3)/4 - MAX_TRAILER_SIZE);
 
 int ipc_space_max;
-int ipc_tree_entry_max;
 int ipc_port_max;
 int ipc_pset_max;
 
@@ -142,7 +152,6 @@ ipc_bootstrap(void)
        
        ipc_port_multiple_lock_init();
 
-       ipc_port_timestamp_lock_init();
        ipc_port_timestamp_data = 0;
 
        /* all IPC zones should be exhaustible */
@@ -151,20 +160,7 @@ ipc_bootstrap(void)
                               ipc_space_max * sizeof(struct ipc_space),
                               sizeof(struct ipc_space),
                               "ipc spaces");
-#if 0
-       /* make it exhaustible */
-       zone_change(ipc_space_zone, Z_EXHAUST, TRUE);
-#endif
-
-       ipc_tree_entry_zone =
-               zinit(sizeof(struct ipc_tree_entry),
-                       ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
-                       sizeof(struct ipc_tree_entry),
-                       "ipc tree entries");
-#if 0
-       /* make it exhaustible */
-       zone_change(ipc_tree_entry_zone, Z_EXHAUST, TRUE);
-#endif
+       zone_change(ipc_space_zone, Z_NOENCRYPT, TRUE);
 
        /*
         * populate all port(set) zones
@@ -174,19 +170,16 @@ ipc_bootstrap(void)
                      ipc_port_max * sizeof(struct ipc_port),
                      sizeof(struct ipc_port),
                      "ipc ports");
-       /*
-        * XXX  Can't make the port zone exhaustible because the kernel
-        * XXX  panics when port allocation for an internal object fails.
-        *zone_change(ipc_object_zones[IOT_PORT], Z_EXHAUST, TRUE);
-        */
+       /* cant charge callers for port allocations (references passed) */
+       zone_change(ipc_object_zones[IOT_PORT], Z_CALLERACCT, FALSE);
+       zone_change(ipc_object_zones[IOT_PORT], Z_NOENCRYPT, TRUE);
 
        ipc_object_zones[IOT_PORT_SET] =
                zinit(sizeof(struct ipc_pset),
                      ipc_pset_max * sizeof(struct ipc_pset),
                      sizeof(struct ipc_pset),
                      "ipc port sets");
-       /* make it exhaustible */
-       zone_change(ipc_object_zones[IOT_PORT_SET], Z_EXHAUST, TRUE);
+       zone_change(ipc_object_zones[IOT_PORT_SET], Z_NOENCRYPT, TRUE);
 
        /*
         * Create the basic ipc_kmsg_t zone (the one we also cache)
@@ -197,14 +190,7 @@ ipc_bootstrap(void)
                              IKM_SAVED_KMSG_SIZE,
                              IKM_SAVED_KMSG_SIZE,
                              "ipc kmsgs");
-
-#if CONFIG_MACF_MACH
-       ipc_labelh_zone = 
-               zinit(sizeof(struct ipc_labelh),
-                     ipc_port_max * sizeof(struct ipc_labelh),
-                     sizeof(struct ipc_labelh),
-                     "label handles");
-#endif
+       zone_change(ipc_kmsg_zone, Z_CALLERACCT, FALSE);
 
        /* create special spaces */
 
@@ -222,9 +208,13 @@ ipc_bootstrap(void)
 #endif
        mig_init();
        ipc_table_init();
-       ipc_hash_init();
+       ipc_voucher_init();
+
+#if IMPORTANCE_INHERITANCE
+       ipc_importance_init();
+#endif
+
        semaphore_init();
-       lock_set_init();
        mk_timer_init();
        host_notify_init();
 }
@@ -232,7 +222,7 @@ ipc_bootstrap(void)
 /* 
  * XXX tunable, belongs in mach.message.h 
  */
-#define MSG_OOL_SIZE_SMALL_MAX 4096
+#define MSG_OOL_SIZE_SMALL_MAX (2*PAGE_SIZE)
 vm_size_t msg_ool_size_small;
 
 /*
@@ -248,13 +238,13 @@ ipc_init(void)
        vm_offset_t min;
 
        retval = kmem_suballoc(kernel_map, &min, ipc_kernel_map_size,
-                              TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_map);
+                              TRUE, VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_KERN_MEMORY_IPC), &ipc_kernel_map);
 
        if (retval != KERN_SUCCESS)
                panic("ipc_init: kmem_suballoc of ipc_kernel_map failed");
 
        retval = kmem_suballoc(kernel_map, &min, ipc_kernel_copy_map_size,
-                              TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_copy_map);
+                              TRUE, VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_KERN_MEMORY_IPC), &ipc_kernel_copy_map);
 
        if (retval != KERN_SUCCESS)
                panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
@@ -274,6 +264,24 @@ ipc_init(void)
        else {
                msg_ool_size_small = MSG_OOL_SIZE_SMALL_MAX;
        }
+       /* account for overhead to avoid spilling over a page */
+       msg_ool_size_small -= cpy_kdata_hdr_sz;
 
        ipc_host_init();
+
+}
+
+
+/*
+ *     Routine:        ipc_thread_call_init
+ *     Purpose:
+ *             Initialize IPC logic that needs thread call support
+ */
+
+void
+ipc_thread_call_init(void)
+{
+#if IMPORTANCE_INHERITANCE
+       ipc_importance_thread_call_init();
+#endif
 }