]> git.saurik.com Git - apple/xnu.git/blobdiff - osfmk/kern/ipc_kobject.c
xnu-3247.1.106.tar.gz
[apple/xnu.git] / osfmk / kern / ipc_kobject.c
index a0cc915a83b16fbe265265c531263e7c4d927aac..1789ae5f6bf16346d03b2212d339f71e71fca18f 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
 
 #include <mach_debug.h>
 #include <mach_ipc_test.h>
-#include <mach_machine_routines.h>
-#include <norma_task.h>
 #include <mach_rt.h>
-#include <platforms.h>
 
 #include <mach/mig.h>
 #include <mach/port.h>
 #include <mach/host_security_server.h>
 #include <mach/clock_server.h>
 #include <mach/clock_priv_server.h>
-#include <mach/ledger_server.h>
 #include <mach/lock_set_server.h>
 #include <default_pager/default_pager_object_server.h>
 #include <mach/memory_object_server.h>
 #include <mach/memory_object_control_server.h>
 #include <mach/memory_object_default_server.h>
-#include <mach/memory_object_name_server.h>
 #include <mach/processor_server.h>
 #include <mach/processor_set_server.h>
 #include <mach/task_server.h>
+#include <mach/mach_voucher_server.h>
+#include <mach/mach_voucher_attr_control_server.h>
 #if VM32_SUPPORT
 #include <mach/vm32_map_server.h>
 #endif
 #include <kern/misc_protos.h>
 #include <ipc/ipc_kmsg.h>
 #include <ipc/ipc_port.h>
-#include <ipc/ipc_labelh.h>
+#include <ipc/ipc_voucher.h>
+#include <kern/sync_sema.h>
 #include <kern/counters.h>
 
 #include <vm/vm_protos.h>
 
 #include <security/mac_mach_internal.h>
 
+extern char *proc_name_address(void *p);
+extern int proc_pid(void *p);
+
 /*
  *     Routine:        ipc_kobject_notify
  *     Purpose:
@@ -159,20 +160,16 @@ typedef struct {
 #endif
 } mig_hash_t;
 
-#define MAX_MIG_ENTRIES 1024
+#define MAX_MIG_ENTRIES 1031
 #define MIG_HASH(x) (x)
 
 #ifndef max
 #define max(a,b)        (((a) > (b)) ? (a) : (b))
 #endif /* max */
 
-mig_hash_t mig_buckets[MAX_MIG_ENTRIES];
-int mig_table_max_displ;
-mach_msg_size_t mig_reply_size;
-
-#if CONFIG_MACF
-#include <mach/security_server.h>
-#endif
+static mig_hash_t mig_buckets[MAX_MIG_ENTRIES];
+static int mig_table_max_displ;
+static mach_msg_size_t mig_reply_size = sizeof(mig_reply_error_t);
 
 
 
@@ -187,9 +184,7 @@ const struct mig_subsystem *mig_e[] = {
         (const struct mig_subsystem *)&processor_subsystem,
         (const struct mig_subsystem *)&processor_set_subsystem,
         (const struct mig_subsystem *)&is_iokit_subsystem,
-        (const struct mig_subsystem *)&memory_object_name_subsystem,
        (const struct mig_subsystem *)&lock_set_subsystem,
-       (const struct mig_subsystem *)&ledger_subsystem,
        (const struct mig_subsystem *)&task_subsystem,
        (const struct mig_subsystem *)&thread_act_subsystem,
 #if VM32_SUPPORT
@@ -197,6 +192,8 @@ const struct mig_subsystem *mig_e[] = {
 #endif
        (const struct mig_subsystem *)&UNDReply_subsystem,
        (const struct mig_subsystem *)&default_pager_object_subsystem,
+       (const struct mig_subsystem *)&mach_voucher_subsystem,
+       (const struct mig_subsystem *)&mach_voucher_attr_control_subsystem,
 
 #if     XK_PROXY
         (const struct mig_subsystem *)&do_uproxy_xk_uproxy_subsystem,
@@ -207,10 +204,6 @@ const struct mig_subsystem *mig_e[] = {
 #if     MCMSG && iPSC860
        (const struct mig_subsystem *)&mcmsg_info_subsystem,
 #endif  /* MCMSG && iPSC860 */
-
-#if CONFIG_MACF
-       (const struct mig_subsystem *)&security_subsystem,
-#endif
 };
 
 void
@@ -224,7 +217,6 @@ mig_init(void)
        range = mig_e[i]->end - mig_e[i]->start;
        if (!mig_e[i]->start || range < 0)
            panic("the msgh_ids in mig_e[] aren't valid!");
-       mig_reply_size = max(mig_reply_size, mig_e[i]->maxsize);
 
        for  (j = 0; j < range; j++) {
          if (mig_e[i]->routine[j].stub_routine) { 
@@ -317,13 +309,21 @@ ipc_kobject_server(
 #define        InP     ((mach_msg_header_t *) request->ikm_header)
 #define        OutP    ((mig_reply_error_t *) reply->ikm_header)
 
+           /* 
+            * MIG should really assure no data leakage -
+            * but until it does, pessimistically zero the
+            * whole reply buffer.
+            */
+           bzero((void *)OutP, reply_size);
+
            OutP->NDR = NDR_record;
            OutP->Head.msgh_size = sizeof(mig_reply_error_t);
 
            OutP->Head.msgh_bits =
-               MACH_MSGH_BITS(MACH_MSGH_BITS_LOCAL(InP->msgh_bits), 0);
+               MACH_MSGH_BITS_SET(MACH_MSGH_BITS_LOCAL(InP->msgh_bits), 0, 0, 0);
            OutP->Head.msgh_remote_port = InP->msgh_local_port;
-           OutP->Head.msgh_local_port  = MACH_PORT_NULL;
+           OutP->Head.msgh_local_port = MACH_PORT_NULL;
+           OutP->Head.msgh_voucher_port = MACH_PORT_NULL;
            OutP->Head.msgh_id = InP->msgh_id + 100;
 
 #undef InP
@@ -382,6 +382,17 @@ ipc_kobject_server(
        }
        *destp = IP_NULL;
 
+       /*
+        *      Destroy voucher.  The kernel MIG servers never take ownership
+        *      of vouchers sent in messages.  Swallow any such rights here.
+        */
+       if (IP_VALID(request->ikm_voucher)) {
+               assert(MACH_MSG_TYPE_PORT_SEND ==
+                      MACH_MSGH_BITS_VOUCHER(request->ikm_header->msgh_bits));
+               ipc_port_release_send(request->ikm_voucher);
+               request->ikm_voucher = IP_NULL;
+       }
+
         if (!(reply->ikm_header->msgh_bits & MACH_MSGH_BITS_COMPLEX) &&
            ((mig_reply_error_t *) reply->ikm_header)->RetCode != KERN_SUCCESS)
                kr = ((mig_reply_error_t *) reply->ikm_header)->RetCode;
@@ -457,11 +468,6 @@ ipc_kobject_set(
 {
        ip_lock(port);
        ipc_kobject_set_atomically(port, kobject, type);
-
-#if CONFIG_MACF_MACH
-       mac_port_label_update_kobject (&port->ip_label, type);
-#endif
-
        ip_unlock(port);
 }
 
@@ -511,12 +517,6 @@ ipc_kobject_destroy(
                host_notify_port_destroy(port);
                break;
 
-#if CONFIG_MACF_MACH
-       case IKOT_LABELH:
-               labelh_destroy(port);
-               break;
-#endif
-
        default:
                break;
        }
@@ -533,40 +533,49 @@ ipc_kobject_notify(
        ((mig_reply_error_t *) reply_header)->RetCode = MIG_NO_REPLY;
        switch (request_header->msgh_id) {
                case MACH_NOTIFY_NO_SENDERS:
-                  if(ip_kotype(port) == IKOT_NAMED_ENTRY) {
-                       ip_lock(port);
-
-                       /*
-                        * Bring the sequence number and mscount in
-                        * line with ipc_port_destroy assertion.
-                        */
-                       port->ip_mscount = 0;
-                       port->ip_messages.imq_seqno = 0;
-                       ipc_port_destroy(port); /* releases lock */
-                       return TRUE;
-                  }
-                  if (ip_kotype(port) == IKOT_UPL) {
-                          upl_no_senders(
-                               request_header->msgh_remote_port, 
-                               (mach_port_mscount_t) 
-                               ((mach_no_senders_notification_t *) 
-                                request_header)->not_count);
-                          reply_header->msgh_remote_port = MACH_PORT_NULL;
-                          return TRUE;
-                  }
+                       switch (ip_kotype(port)) {
+                       case IKOT_VOUCHER:
+                               ipc_voucher_notify(request_header);
+                               return TRUE;
+
+                       case IKOT_VOUCHER_ATTR_CONTROL:
+                               ipc_voucher_attr_control_notify(request_header);
+                               return TRUE;
+
+                       case IKOT_SEMAPHORE:
+                               semaphore_notify(request_header);
+                               return TRUE;
+                               
+                       case IKOT_NAMED_ENTRY:
+                               ip_lock(port);
+
+                               /*
+                                * Bring the sequence number and mscount in
+                                * line with ipc_port_destroy assertion.
+                                */
+                               port->ip_mscount = 0;
+                               port->ip_messages.imq_seqno = 0;
+                               ipc_port_destroy(port); /* releases lock */
+                               return TRUE;
+
+                       case IKOT_UPL:
+                               upl_no_senders(
+                                       request_header->msgh_remote_port, 
+                                       (mach_port_mscount_t) 
+                                       ((mach_no_senders_notification_t *) 
+                                        request_header)->not_count);
+                               reply_header->msgh_remote_port = MACH_PORT_NULL;
+                               return TRUE;
+
 #if    CONFIG_AUDIT
-                  if (ip_kotype(port) == IKOT_AU_SESSIONPORT) {
-                          audit_session_nosenders(request_header);
-                          return TRUE;
-                  }
+                       case IKOT_AU_SESSIONPORT:
+                               audit_session_nosenders(request_header);
+                               return TRUE;
 #endif
-#if CONFIG_EMBEDDED
-                  if (ip_kotype(port) == IKOT_FILEPORT) {
-                       fileport_notify(request_header);
-                       return TRUE;
-                  }
-#endif
-
+                       case IKOT_FILEPORT:
+                               fileport_notify(request_header);
+                               return TRUE;
+                       }
                   break;
 
                case MACH_NOTIFY_PORT_DELETED:
@@ -588,72 +597,12 @@ ipc_kobject_notify(
                 return iokit_notify(request_header);
                }
 #endif
+               case IKOT_TASK_RESUME:
+               {
+                       return task_suspension_notify(request_header);
+               }
+
                default:
                 return FALSE;
         }
 }
-
-
-
-#include <mach_kdb.h>
-#if    MACH_COUNTERS && MACH_KDB
-
-#include <ddb/db_output.h>
-#include <ddb/db_sym.h>
-
-#define printf  kdbprintf
-
-extern void kobjserver_stats(void);
-extern void bucket_stats_print(mig_hash_t *bucket);
-
-extern void kobjserver_stats_clear(void);
-
-
-void
-kobjserver_stats_clear(void)
-{
-       int i;
-       for (i = 0; i < MAX_MIG_ENTRIES; i++) {
-               mig_buckets[i].callcount = 0;
-       }
-}
-
-void
-kobjserver_stats(void)
-{
-    register unsigned int i, n = sizeof(mig_e)/sizeof(struct mig_subsystem);
-    register unsigned int howmany;
-    register mach_msg_id_t j, pos, nentry, range;
-       
-    db_printf("Kobject server call counts:\n");
-    for (i = 0; i < n; i++) {
-       db_printf("  ");
-       db_printsym((vm_offset_t)mig_e[i], DB_STGY_ANY);
-       db_printf(":\n");
-       range = mig_e[i]->end - mig_e[i]->start;
-       if (!mig_e[i]->start || range < 0) continue;
-
-       for  (j = 0; j < range; j++) {
-           nentry = j + mig_e[i]->start;       
-           for (pos = MIG_HASH(nentry) % MAX_MIG_ENTRIES, howmany = 1;
-                mig_buckets[pos].num;
-                pos++, pos = pos % MAX_MIG_ENTRIES, howmany++) {
-                   if (mig_buckets[pos].num == nentry)
-                       bucket_stats_print(&mig_buckets[pos]);
-           }
-       }
-    }
-}
-
-void
-bucket_stats_print(mig_hash_t *bucket)
-{
-       if (bucket->callcount) {
-               db_printf("    ");
-               db_printsym((vm_offset_t)bucket->routine, DB_STGY_ANY);
-               db_printf(" (%d):\t%d\n", bucket->num, bucket->callcount);
-       }
-}
-
-
-#endif /* MACH_COUNTERS && MACH_KDB */