1 /*
2 * Copyright (c) 2003, 2013, 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
27 #include "jni_util.h"
28
29 /*
30 * Macros to use the right data type for file descriptors
31 */
32 #define FD jlong
33
34 /*
35 * Prototypes for functions in io_util_md.c called from io_util.c,
36 * FileDescriptor.c, FileInputStream.c, FileOutputStream.c,
37 * ProcessImpl_md.c
38 */
39 WCHAR* pathToNTPath(JNIEnv *env, jstring path, jboolean throwFNFE);
40 WCHAR* fileToNTPath(JNIEnv *env, jobject file, jfieldID id);
41 WCHAR* getPrefixed(const WCHAR* path, int pathlen);
42 WCHAR* currentDir(int di);
43 int currentDirLength(const WCHAR* path, int pathlen);
44 int handleAvailable(FD fd, jlong *pbytes);
45 int handleSync(FD fd);
46 int handleSetLength(FD fd, jlong length);
47 JNIEXPORT jint handleRead(FD fd, void *buf, jint len);
48 jint handleWrite(FD fd, const void *buf, jint len);
49 jint handleAppend(FD fd, const void *buf, jint len);
50 jint handleClose(JNIEnv *env, jobject this, jfieldID fid);
51 jlong handleLseek(FD fd, jlong offset, jint whence);
52
53 /*
54 * Returns an opaque handle to file named by "path". If an error occurs,
55 * returns -1 and an exception is pending.
56 */
57 FD winFileHandleOpen(JNIEnv *env, jstring path, int flags);
58
59 /*
60 * Macros to set/get fd from the java.io.FileDescriptor.
61 * If GetObjectField returns null, SET_FD will stop and GET_FD
62 * will simply return -1 to avoid crashing VM.
63 */
64 #define SET_FD(this, fd, fid) \
65 if ((*env)->GetObjectField(env, (this), (fid)) != NULL) \
66 (*env)->SetLongField(env, (*env)->GetObjectField(env, (this), (fid)), IO_handle_fdID, (fd))
67
68 #define GET_FD(this, fid) \
69 ((*env)->GetObjectField(env, (this), (fid)) == NULL) ? \
70 -1 : (*env)->GetLongField(env, (*env)->GetObjectField(env, (this), (fid)), IO_handle_fdID)
71
72 /*
73 * Macros to set/get fd when inside java.io.FileDescriptor
74 */
75 #define THIS_FD(obj) (*env)->GetLongField(env, obj, IO_handle_fdID)
76
77 /*
78 * Route the routines away from VM
79 */
80 #define IO_Append handleAppend
81 #define IO_Write handleWrite
82 #define IO_Sync handleSync
83 #define IO_Read handleRead
84 #define IO_Lseek handleLseek
85 #define IO_Available handleAvailable
86 #define IO_SetLength handleSetLength
87
88 /*
89 * Setting the handle field in Java_java_io_FileDescriptor_set for
90 * standard handles stdIn, stdOut, stdErr
91 */
92 #define SET_HANDLE(fd) \
93 if (fd == 0) { \
94 return (jlong)GetStdHandle(STD_INPUT_HANDLE); \
95 } else if (fd == 1) { \
96 return (jlong)GetStdHandle(STD_OUTPUT_HANDLE); \
97 } else if (fd == 2) { \
98 return (jlong)GetStdHandle(STD_ERROR_HANDLE); \
99 } else { \
100 return (jlong)-1; \
101 } \
102
103 /* INVALID_FILE_ATTRIBUTES is not defined in VC++6.0's header files but
104 * in later release. Keep here just in case someone is still using VC++6.0
105 */
106 #ifndef INVALID_FILE_ATTRIBUTES
|
1 /*
2 * Copyright (c) 2003, 2015, 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
27 #include "jni_util.h"
28
29 /*
30 * Macros to use the right data type for file descriptors
31 */
32 #define FD jlong
33
34 /*
35 * Prototypes for functions in io_util_md.c called from io_util.c,
36 * FileDescriptor.c, FileInputStream.c, FileOutputStream.c,
37 * ProcessImpl_md.c
38 */
39 WCHAR* pathToNTPath(JNIEnv *env, jstring path, jboolean throwFNFE);
40 WCHAR* fileToNTPath(JNIEnv *env, jobject file, jfieldID id);
41 WCHAR* getPrefixed(const WCHAR* path, int pathlen);
42 WCHAR* currentDir(int di);
43 int currentDirLength(const WCHAR* path, int pathlen);
44 int handleAvailable(FD fd, jlong *pbytes);
45 int handleSync(FD fd);
46 int handleSetLength(FD fd, jlong length);
47 jlong handleGetLength(FD fd);
48 JNIEXPORT jint handleRead(FD fd, void *buf, jint len);
49 jint handleWrite(FD fd, const void *buf, jint len);
50 jint handleAppend(FD fd, const void *buf, jint len);
51 jint handleClose(JNIEnv *env, jobject this, jfieldID fid);
52 jlong handleLseek(FD fd, jlong offset, jint whence);
53
54 /*
55 * Returns an opaque handle to file named by "path". If an error occurs,
56 * returns -1 and an exception is pending.
57 */
58 FD winFileHandleOpen(JNIEnv *env, jstring path, int flags);
59
60 /*
61 * Macros to set/get fd from the java.io.FileDescriptor.
62 * If GetObjectField returns null, SET_FD will stop and GET_FD
63 * will simply return -1 to avoid crashing VM.
64 */
65 #define SET_FD(this, fd, fid) \
66 if ((*env)->GetObjectField(env, (this), (fid)) != NULL) \
67 (*env)->SetLongField(env, (*env)->GetObjectField(env, (this), (fid)), IO_handle_fdID, (fd))
68
69 #define GET_FD(this, fid) \
70 ((*env)->GetObjectField(env, (this), (fid)) == NULL) ? \
71 -1 : (*env)->GetLongField(env, (*env)->GetObjectField(env, (this), (fid)), IO_handle_fdID)
72
73 /*
74 * Macros to set/get fd when inside java.io.FileDescriptor
75 */
76 #define THIS_FD(obj) (*env)->GetLongField(env, obj, IO_handle_fdID)
77
78 /*
79 * Route the routines away from VM
80 */
81 #define IO_Append handleAppend
82 #define IO_Write handleWrite
83 #define IO_Sync handleSync
84 #define IO_Read handleRead
85 #define IO_Lseek handleLseek
86 #define IO_Available handleAvailable
87 #define IO_SetLength handleSetLength
88 #define IO_GetLength handleGetLength
89
90 /*
91 * Setting the handle field in Java_java_io_FileDescriptor_set for
92 * standard handles stdIn, stdOut, stdErr
93 */
94 #define SET_HANDLE(fd) \
95 if (fd == 0) { \
96 return (jlong)GetStdHandle(STD_INPUT_HANDLE); \
97 } else if (fd == 1) { \
98 return (jlong)GetStdHandle(STD_OUTPUT_HANDLE); \
99 } else if (fd == 2) { \
100 return (jlong)GetStdHandle(STD_ERROR_HANDLE); \
101 } else { \
102 return (jlong)-1; \
103 } \
104
105 /* INVALID_FILE_ATTRIBUTES is not defined in VC++6.0's header files but
106 * in later release. Keep here just in case someone is still using VC++6.0
107 */
108 #ifndef INVALID_FILE_ATTRIBUTES
|