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src/java.base/windows/native/libnio/fs/WindowsNativeDispatcher.c

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rev 51041 : imported patch 8207145-Memory-leak-in-WindowsNativeDispatcher
   1 /*
   2  * Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


1026 
1027     /* checkAccessRights is in-out parameter */
1028     MapGenericMask(&checkAccessRights, &mapping);
1029     if (AccessCheck(security, hImpersonatedToken, checkAccessRights,
1030             &mapping, &privileges, &privilegesLength, &grantedAccess, &result) == 0)
1031         throwWindowsException(env, GetLastError());
1032 
1033     return (result == FALSE) ? JNI_FALSE : JNI_TRUE;
1034 }
1035 
1036 JNIEXPORT jlong JNICALL
1037 Java_sun_nio_fs_WindowsNativeDispatcher_LookupPrivilegeValue0(JNIEnv* env,
1038     jclass this, jlong name)
1039 {
1040     LPCWSTR lpName = (LPCWSTR)jlong_to_ptr(name);
1041     PLUID pLuid = LocalAlloc(0, sizeof(LUID));
1042 
1043     if (pLuid == NULL) {
1044         JNU_ThrowInternalError(env, "Unable to allocate LUID structure");
1045     } else {
1046         if (LookupPrivilegeValueW(NULL, lpName, pLuid) == 0)

1047             throwWindowsException(env, GetLastError());


1048     }
1049     return ptr_to_jlong(pLuid);
1050 }
1051 
1052 JNIEXPORT void JNICALL
1053 Java_sun_nio_fs_WindowsNativeDispatcher_CreateSymbolicLink0(JNIEnv* env,
1054     jclass this, jlong linkAddress, jlong targetAddress, jint flags)
1055 {
1056     LPCWSTR link = jlong_to_ptr(linkAddress);
1057     LPCWSTR target = jlong_to_ptr(targetAddress);
1058 
1059     /* On Windows 64-bit this appears to succeed even when there is insufficient privileges */
1060     if (CreateSymbolicLinkW(link, target, (DWORD)flags) == 0)
1061         throwWindowsException(env, GetLastError());
1062 }
1063 
1064 JNIEXPORT void JNICALL
1065 Java_sun_nio_fs_WindowsNativeDispatcher_CreateHardLink0(JNIEnv* env,
1066     jclass this, jlong newFileAddress, jlong existingFileAddress)
1067 {


   1 /*
   2  * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


1026 
1027     /* checkAccessRights is in-out parameter */
1028     MapGenericMask(&checkAccessRights, &mapping);
1029     if (AccessCheck(security, hImpersonatedToken, checkAccessRights,
1030             &mapping, &privileges, &privilegesLength, &grantedAccess, &result) == 0)
1031         throwWindowsException(env, GetLastError());
1032 
1033     return (result == FALSE) ? JNI_FALSE : JNI_TRUE;
1034 }
1035 
1036 JNIEXPORT jlong JNICALL
1037 Java_sun_nio_fs_WindowsNativeDispatcher_LookupPrivilegeValue0(JNIEnv* env,
1038     jclass this, jlong name)
1039 {
1040     LPCWSTR lpName = (LPCWSTR)jlong_to_ptr(name);
1041     PLUID pLuid = LocalAlloc(0, sizeof(LUID));
1042 
1043     if (pLuid == NULL) {
1044         JNU_ThrowInternalError(env, "Unable to allocate LUID structure");
1045     } else {
1046         if (LookupPrivilegeValueW(NULL, lpName, pLuid) == 0) {
1047             LocalFree(pLuid);
1048             throwWindowsException(env, GetLastError());
1049             return (jlong)0;
1050         }
1051     }
1052     return ptr_to_jlong(pLuid);
1053 }
1054 
1055 JNIEXPORT void JNICALL
1056 Java_sun_nio_fs_WindowsNativeDispatcher_CreateSymbolicLink0(JNIEnv* env,
1057     jclass this, jlong linkAddress, jlong targetAddress, jint flags)
1058 {
1059     LPCWSTR link = jlong_to_ptr(linkAddress);
1060     LPCWSTR target = jlong_to_ptr(targetAddress);
1061 
1062     /* On Windows 64-bit this appears to succeed even when there is insufficient privileges */
1063     if (CreateSymbolicLinkW(link, target, (DWORD)flags) == 0)
1064         throwWindowsException(env, GetLastError());
1065 }
1066 
1067 JNIEXPORT void JNICALL
1068 Java_sun_nio_fs_WindowsNativeDispatcher_CreateHardLink0(JNIEnv* env,
1069     jclass this, jlong newFileAddress, jlong existingFileAddress)
1070 {


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