xnu-4903.221.2.tar.gz

[apple/xnu.git] / libkern / OSKextLib.cpp

diff --git a/libkern/OSKextLib.cpp b/libkern/OSKextLib.cpp
index 4876839afd1724592d9d401dafbb33934ac31569..5b9ee7b4a03c2e3d4164b6f608921ce680246792 100644 (file)
--- a/libkern/OSKextLib.cpp
+++ b/libkern/OSKextLib.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2008-2016 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -29,10 +29,6 @@
 extern "C" {
 #include <libkern/OSKextLibPrivate.h>
 #include <libkern/mkext.h>
-
-#include <mach/host_special_ports.h>
-#include <kextd/kextd_mach.h>
-#include <kern/host.h>
 };
 
 #include <libkern/c++/OSContainers.h>
@@ -52,6 +48,7 @@ kern_return_t OSKextLoadKextWithIdentifier(const char * bundle_id)
     return OSKext::loadKextWithIdentifier(bundle_id);
 }
 
+uint32_t OSKextGetLoadTagForIdentifier(const char * kextIdentifier);
 /*********************************************************************
 *********************************************************************/
 uint32_t
@@ -185,45 +182,6 @@ OSReturn OSKextCancelRequest(
 #if PRAGMA_MARK
 #pragma mark MIG Functions & Wrappers
 #endif
-/*********************************************************************
-* This function is for use only by OSKextLib.cpp and OSKext.cpp.
-*
-* xxx - can we cache the kextd port or do we have to get it each time
-* xxx - in case it relaunches?
-*********************************************************************/
-extern void ipc_port_release_send(ipc_port_t);
-
-kern_return_t OSKextPingKextd(void)
-{
-    kern_return_t result     = KERN_FAILURE;
-    mach_port_t   kextd_port = IPC_PORT_NULL;
-
-    result = host_get_kextd_port(host_priv_self(), &kextd_port);
-    if (result != KERN_SUCCESS || !IPC_PORT_VALID(kextd_port)) {
-       OSKextLog(/* kext */ NULL,
-            kOSKextLogErrorLevel |
-            kOSKextLogIPCFlag,
-            "Can't get kextd port.");
-        goto finish;
-    }
-
-    result = kextd_ping(kextd_port);
-    if (result != KERN_SUCCESS) {
-       OSKextLog(/* kext */ NULL,
-            kOSKextLogErrorLevel |
-            kOSKextLogIPCFlag,
-            "kextd ping failed (0x%x).", (int)result);
-        goto finish;
-    }
-
-finish:
-    if (IPC_PORT_VALID(kextd_port)) {
-        ipc_port_release_send(kextd_port);
-    }
-
-    return result;
-}
-
 /*********************************************************************
 * IMPORTANT: Once we have done the vm_map_copyout(), we *must* return
 * KERN_SUCCESS or the kernel map gets messed up (reason as yet
@@ -382,10 +340,12 @@ finish:
         (void)vm_deallocate(kernel_map, (vm_offset_t)request, requestLengthIn);
     }
     if (response) {
-        kmem_free(kernel_map, (vm_offset_t)response, responseLength);
+        /* 11981737 - clear uninitialized data in last page */
+        kmem_free(kernel_map, (vm_offset_t)response, round_page(responseLength));
     }
     if (logData) {
-        kmem_free(kernel_map, (vm_offset_t)logData, logDataLength);
+        /* 11981737 - clear uninitialized data in last page */
+        kmem_free(kernel_map, (vm_offset_t)logData, round_page(logDataLength));
     }
 
     return result;
@@ -394,8 +354,8 @@ finish:
 /*********************************************************************
 * Gets the vm_map for the current kext
 *********************************************************************/
-extern vm_offset_t sectPRELINKB;
-extern int sectSizePRELINK;
+extern vm_offset_t segPRELINKTEXTB;
+extern unsigned long segSizePRELINKTEXT;
 extern int kth_started;
 extern vm_map_t g_kext_map;
 
@@ -405,8 +365,8 @@ kext_get_vm_map(kmod_info_t *info)
     vm_map_t kext_map = NULL;
 
     /* Set the vm map */
-    if ((info->address >= sectPRELINKB) && 
-            (info->address < (sectPRELINKB + sectSizePRELINK)))
+    if ((info->address >= segPRELINKTEXTB) &&
+            (info->address < (segPRELINKTEXTB + segSizePRELINKTEXT)))
     {
         kext_map = kernel_map;
     } else {
@@ -442,6 +402,16 @@ void OSKextRemoveKextBootstrap(void)
     return;
 }
 
+#if CONFIG_DTRACE
+/*********************************************************************
+*********************************************************************/
+void OSKextRegisterKextsWithDTrace(void)
+{
+    OSKext::registerKextsWithDTrace();
+    return;
+}
+#endif /* CONFIG_DTRACE */
+
 /*********************************************************************
 *********************************************************************/
 void kext_dump_panic_lists(int (*printf_func)(const char * fmt, ...))
@@ -469,36 +439,47 @@ void kext_dump_panic_lists(int (*printf_func)(const char * fmt, ...))
 void
 kmod_panic_dump(vm_offset_t * addr, unsigned int cnt)
 {
-    extern int kdb_printf(const char *format, ...) __printflike(1,2);
+    extern int paniclog_append_noflush(const char *format, ...) __printflike(1,2);
+
+    OSKext::printKextsInBacktrace(addr, cnt, &paniclog_append_noflush, 0);
 
-    OSKext::printKextsInBacktrace(addr, cnt, &kdb_printf,
-        /* takeLock? */ false);
     return;
 }
 
 /********************************************************************/
-void kmod_dump_log(vm_offset_t *addr, unsigned int cnt);
+void kmod_dump_log(vm_offset_t *addr, unsigned int cnt, boolean_t doUnslide);
 
 void
 kmod_dump_log(
     vm_offset_t * addr,
-    unsigned int cnt)
+    unsigned int cnt,
+    boolean_t doUnslide)
 {
-    OSKext::printKextsInBacktrace(addr, cnt, &printf, /* lock? */ true);
+    uint32_t flags = OSKext::kPrintKextsLock;
+    if (doUnslide) flags |= OSKext::kPrintKextsUnslide;
+    OSKext::printKextsInBacktrace(addr, cnt, &printf, flags);
 }
 
+void *
+OSKextKextForAddress(const void *addr)
+{
+    return OSKext::kextForAddress(addr);
+}
+
+
 /*********************************************************************
 * Compatibility implementation for kmod_get_info() host_priv routine.
 * Only supported on old 32-bit architectures.
 *********************************************************************/
-#if __ppc__ || __i386__
-kern_return_t
-kext_get_kmod_info(
-    kmod_info_array_t      * kmod_list,
-    mach_msg_type_number_t * kmodCount)
+
+#if PRAGMA_MARK
+#pragma mark Loaded Kext Summary
+#endif
+
+void 
+OSKextLoadedKextSummariesUpdated(void)
 {
-    return OSKext::getKmodInfo(kmod_list, kmodCount);
+    // Do nothing.
 }
-#endif /* __ppc__ || __i386__ */
 
 };