author | ohair |
Tue, 28 Dec 2010 15:53:50 -0800 | |
changeset 7668 | d4a77089c587 |
parent 6850 | 56966b0a6a0d |
child 12047 | 320a714614e9 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
7668 | 2 |
* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
2 | 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 |
|
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 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 |
* |
|
5506 | 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 |
|
23 |
* questions. |
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2 | 24 |
*/ |
25 |
||
26 |
#include <assert.h> |
|
27 |
#include <sys/types.h> |
|
28 |
#include <sys/time.h> |
|
29 |
#include <sys/stat.h> |
|
30 |
#include <sys/statvfs.h> |
|
31 |
#include <string.h> |
|
32 |
#include <stdlib.h> |
|
33 |
#include <dlfcn.h> |
|
34 |
#include <limits.h> |
|
35 |
||
36 |
#include "jni.h" |
|
37 |
#include "jni_util.h" |
|
38 |
#include "jlong.h" |
|
39 |
#include "jvm.h" |
|
40 |
#include "io_util.h" |
|
41 |
#include "java_io_FileSystem.h" |
|
42 |
#include "java_io_UnixFileSystem.h" |
|
43 |
||
44 |
||
45 |
/* -- Field IDs -- */ |
|
46 |
||
47 |
static struct { |
|
48 |
jfieldID path; |
|
49 |
} ids; |
|
50 |
||
51 |
||
52 |
JNIEXPORT void JNICALL |
|
53 |
Java_java_io_UnixFileSystem_initIDs(JNIEnv *env, jclass cls) |
|
54 |
{ |
|
55 |
jclass fileClass = (*env)->FindClass(env, "java/io/File"); |
|
56 |
if (!fileClass) return; |
|
57 |
ids.path = (*env)->GetFieldID(env, fileClass, |
|
58 |
"path", "Ljava/lang/String;"); |
|
59 |
} |
|
60 |
||
61 |
/* -- Path operations -- */ |
|
62 |
||
63 |
extern int canonicalize(char *path, const char *out, int len); |
|
64 |
||
65 |
JNIEXPORT jstring JNICALL |
|
66 |
Java_java_io_UnixFileSystem_canonicalize0(JNIEnv *env, jobject this, |
|
67 |
jstring pathname) |
|
68 |
{ |
|
69 |
jstring rv = NULL; |
|
70 |
||
71 |
WITH_PLATFORM_STRING(env, pathname, path) { |
|
72 |
char canonicalPath[JVM_MAXPATHLEN]; |
|
73 |
if (canonicalize(JVM_NativePath((char *)path), |
|
74 |
canonicalPath, JVM_MAXPATHLEN) < 0) { |
|
75 |
JNU_ThrowIOExceptionWithLastError(env, "Bad pathname"); |
|
76 |
} else { |
|
77 |
rv = JNU_NewStringPlatform(env, canonicalPath); |
|
78 |
} |
|
79 |
} END_PLATFORM_STRING(env, path); |
|
80 |
return rv; |
|
81 |
} |
|
82 |
||
83 |
||
84 |
/* -- Attribute accessors -- */ |
|
85 |
||
86 |
||
87 |
static jboolean |
|
88 |
statMode(const char *path, int *mode) |
|
89 |
{ |
|
692
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|
90 |
struct stat64 sb; |
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|
91 |
if (stat64(path, &sb) == 0) { |
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|
92 |
*mode = sb.st_mode; |
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|
93 |
return JNI_TRUE; |
2 | 94 |
} |
95 |
return JNI_FALSE; |
|
96 |
} |
|
97 |
||
98 |
||
99 |
JNIEXPORT jint JNICALL |
|
100 |
Java_java_io_UnixFileSystem_getBooleanAttributes0(JNIEnv *env, jobject this, |
|
101 |
jobject file) |
|
102 |
{ |
|
103 |
jint rv = 0; |
|
104 |
||
105 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
106 |
int mode; |
|
107 |
if (statMode(path, &mode)) { |
|
108 |
int fmt = mode & S_IFMT; |
|
109 |
rv = (jint) (java_io_FileSystem_BA_EXISTS |
|
110 |
| ((fmt == S_IFREG) ? java_io_FileSystem_BA_REGULAR : 0) |
|
111 |
| ((fmt == S_IFDIR) ? java_io_FileSystem_BA_DIRECTORY : 0)); |
|
112 |
} |
|
113 |
} END_PLATFORM_STRING(env, path); |
|
114 |
return rv; |
|
115 |
} |
|
116 |
||
117 |
JNIEXPORT jboolean JNICALL |
|
118 |
Java_java_io_UnixFileSystem_checkAccess(JNIEnv *env, jobject this, |
|
119 |
jobject file, jint a) |
|
120 |
{ |
|
121 |
jboolean rv = JNI_FALSE; |
|
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|
122 |
int mode = 0; |
2 | 123 |
switch (a) { |
124 |
case java_io_FileSystem_ACCESS_READ: |
|
125 |
mode = R_OK; |
|
126 |
break; |
|
127 |
case java_io_FileSystem_ACCESS_WRITE: |
|
128 |
mode = W_OK; |
|
129 |
break; |
|
130 |
case java_io_FileSystem_ACCESS_EXECUTE: |
|
131 |
mode = X_OK; |
|
132 |
break; |
|
133 |
default: assert(0); |
|
134 |
} |
|
135 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
136 |
if (access(path, mode) == 0) { |
|
137 |
rv = JNI_TRUE; |
|
138 |
} |
|
139 |
} END_PLATFORM_STRING(env, path); |
|
140 |
return rv; |
|
141 |
} |
|
142 |
||
143 |
||
144 |
JNIEXPORT jboolean JNICALL |
|
145 |
Java_java_io_UnixFileSystem_setPermission(JNIEnv *env, jobject this, |
|
146 |
jobject file, |
|
147 |
jint access, |
|
148 |
jboolean enable, |
|
149 |
jboolean owneronly) |
|
150 |
{ |
|
151 |
jboolean rv = JNI_FALSE; |
|
152 |
||
153 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
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changeset
|
154 |
int amode = 0; |
56966b0a6a0d
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diff
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|
155 |
int mode; |
2 | 156 |
switch (access) { |
157 |
case java_io_FileSystem_ACCESS_READ: |
|
158 |
if (owneronly) |
|
159 |
amode = S_IRUSR; |
|
160 |
else |
|
161 |
amode = S_IRUSR | S_IRGRP | S_IROTH; |
|
162 |
break; |
|
163 |
case java_io_FileSystem_ACCESS_WRITE: |
|
164 |
if (owneronly) |
|
165 |
amode = S_IWUSR; |
|
166 |
else |
|
167 |
amode = S_IWUSR | S_IWGRP | S_IWOTH; |
|
168 |
break; |
|
169 |
case java_io_FileSystem_ACCESS_EXECUTE: |
|
170 |
if (owneronly) |
|
171 |
amode = S_IXUSR; |
|
172 |
else |
|
173 |
amode = S_IXUSR | S_IXGRP | S_IXOTH; |
|
174 |
break; |
|
175 |
default: |
|
176 |
assert(0); |
|
177 |
} |
|
178 |
if (statMode(path, &mode)) { |
|
179 |
if (enable) |
|
180 |
mode |= amode; |
|
181 |
else |
|
182 |
mode &= ~amode; |
|
183 |
if (chmod(path, mode) >= 0) { |
|
184 |
rv = JNI_TRUE; |
|
185 |
} |
|
186 |
} |
|
187 |
} END_PLATFORM_STRING(env, path); |
|
188 |
return rv; |
|
189 |
} |
|
190 |
||
191 |
JNIEXPORT jlong JNICALL |
|
192 |
Java_java_io_UnixFileSystem_getLastModifiedTime(JNIEnv *env, jobject this, |
|
193 |
jobject file) |
|
194 |
{ |
|
195 |
jlong rv = 0; |
|
196 |
||
197 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
198 |
struct stat64 sb; |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
199 |
if (stat64(path, &sb) == 0) { |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
200 |
rv = 1000 * (jlong)sb.st_mtime; |
2 | 201 |
} |
202 |
} END_PLATFORM_STRING(env, path); |
|
203 |
return rv; |
|
204 |
} |
|
205 |
||
206 |
||
207 |
JNIEXPORT jlong JNICALL |
|
208 |
Java_java_io_UnixFileSystem_getLength(JNIEnv *env, jobject this, |
|
209 |
jobject file) |
|
210 |
{ |
|
211 |
jlong rv = 0; |
|
212 |
||
213 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
214 |
struct stat64 sb; |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
215 |
if (stat64(path, &sb) == 0) { |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
216 |
rv = sb.st_size; |
2 | 217 |
} |
218 |
} END_PLATFORM_STRING(env, path); |
|
219 |
return rv; |
|
220 |
} |
|
221 |
||
222 |
||
223 |
/* -- File operations -- */ |
|
224 |
||
225 |
||
226 |
JNIEXPORT jboolean JNICALL |
|
227 |
Java_java_io_UnixFileSystem_createFileExclusively(JNIEnv *env, jclass cls, |
|
228 |
jstring pathname) |
|
229 |
{ |
|
230 |
jboolean rv = JNI_FALSE; |
|
231 |
||
232 |
WITH_PLATFORM_STRING(env, pathname, path) { |
|
233 |
int fd; |
|
234 |
if (!strcmp (path, "/")) { |
|
235 |
fd = JVM_EEXIST; /* The root directory always exists */ |
|
236 |
} else { |
|
237 |
fd = JVM_Open(path, JVM_O_RDWR | JVM_O_CREAT | JVM_O_EXCL, 0666); |
|
238 |
} |
|
239 |
if (fd < 0) { |
|
240 |
if (fd != JVM_EEXIST) { |
|
241 |
JNU_ThrowIOExceptionWithLastError(env, path); |
|
242 |
} |
|
243 |
} else { |
|
244 |
JVM_Close(fd); |
|
245 |
rv = JNI_TRUE; |
|
246 |
} |
|
247 |
} END_PLATFORM_STRING(env, path); |
|
248 |
return rv; |
|
249 |
} |
|
250 |
||
251 |
||
252 |
JNIEXPORT jboolean JNICALL |
|
253 |
Java_java_io_UnixFileSystem_delete0(JNIEnv *env, jobject this, |
|
254 |
jobject file) |
|
255 |
{ |
|
256 |
jboolean rv = JNI_FALSE; |
|
257 |
||
258 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
259 |
if (remove(path) == 0) { |
|
260 |
rv = JNI_TRUE; |
|
261 |
} |
|
262 |
} END_PLATFORM_STRING(env, path); |
|
263 |
return rv; |
|
264 |
} |
|
265 |
||
266 |
||
267 |
JNIEXPORT jobjectArray JNICALL |
|
268 |
Java_java_io_UnixFileSystem_list(JNIEnv *env, jobject this, |
|
269 |
jobject file) |
|
270 |
{ |
|
271 |
DIR *dir = NULL; |
|
272 |
struct dirent64 *ptr; |
|
273 |
struct dirent64 *result; |
|
274 |
int len, maxlen; |
|
275 |
jobjectArray rv, old; |
|
276 |
||
277 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
278 |
dir = opendir(path); |
|
279 |
} END_PLATFORM_STRING(env, path); |
|
280 |
if (dir == NULL) return NULL; |
|
281 |
||
282 |
ptr = malloc(sizeof(struct dirent64) + (PATH_MAX + 1)); |
|
283 |
if (ptr == NULL) { |
|
284 |
JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
|
285 |
closedir(dir); |
|
286 |
return NULL; |
|
287 |
} |
|
288 |
||
289 |
/* Allocate an initial String array */ |
|
290 |
len = 0; |
|
291 |
maxlen = 16; |
|
292 |
rv = (*env)->NewObjectArray(env, maxlen, JNU_ClassString(env), NULL); |
|
293 |
if (rv == NULL) goto error; |
|
294 |
||
295 |
/* Scan the directory */ |
|
296 |
while ((readdir64_r(dir, ptr, &result) == 0) && (result != NULL)) { |
|
297 |
jstring name; |
|
298 |
if (!strcmp(ptr->d_name, ".") || !strcmp(ptr->d_name, "..")) |
|
299 |
continue; |
|
300 |
if (len == maxlen) { |
|
301 |
old = rv; |
|
302 |
rv = (*env)->NewObjectArray(env, maxlen <<= 1, |
|
303 |
JNU_ClassString(env), NULL); |
|
304 |
if (rv == NULL) goto error; |
|
305 |
if (JNU_CopyObjectArray(env, rv, old, len) < 0) goto error; |
|
306 |
(*env)->DeleteLocalRef(env, old); |
|
307 |
} |
|
308 |
name = JNU_NewStringPlatform(env, ptr->d_name); |
|
309 |
if (name == NULL) goto error; |
|
310 |
(*env)->SetObjectArrayElement(env, rv, len++, name); |
|
311 |
(*env)->DeleteLocalRef(env, name); |
|
312 |
} |
|
313 |
closedir(dir); |
|
314 |
free(ptr); |
|
315 |
||
316 |
/* Copy the final results into an appropriately-sized array */ |
|
317 |
old = rv; |
|
318 |
rv = (*env)->NewObjectArray(env, len, JNU_ClassString(env), NULL); |
|
319 |
if (rv == NULL) { |
|
320 |
return NULL; |
|
321 |
} |
|
322 |
if (JNU_CopyObjectArray(env, rv, old, len) < 0) { |
|
323 |
return NULL; |
|
324 |
} |
|
325 |
return rv; |
|
326 |
||
327 |
error: |
|
328 |
closedir(dir); |
|
329 |
free(ptr); |
|
330 |
return NULL; |
|
331 |
} |
|
332 |
||
333 |
||
334 |
JNIEXPORT jboolean JNICALL |
|
335 |
Java_java_io_UnixFileSystem_createDirectory(JNIEnv *env, jobject this, |
|
336 |
jobject file) |
|
337 |
{ |
|
338 |
jboolean rv = JNI_FALSE; |
|
339 |
||
340 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
341 |
if (mkdir(path, 0777) == 0) { |
|
342 |
rv = JNI_TRUE; |
|
343 |
} |
|
344 |
} END_PLATFORM_STRING(env, path); |
|
345 |
return rv; |
|
346 |
} |
|
347 |
||
348 |
||
349 |
JNIEXPORT jboolean JNICALL |
|
350 |
Java_java_io_UnixFileSystem_rename0(JNIEnv *env, jobject this, |
|
351 |
jobject from, jobject to) |
|
352 |
{ |
|
353 |
jboolean rv = JNI_FALSE; |
|
354 |
||
355 |
WITH_FIELD_PLATFORM_STRING(env, from, ids.path, fromPath) { |
|
356 |
WITH_FIELD_PLATFORM_STRING(env, to, ids.path, toPath) { |
|
357 |
if (rename(fromPath, toPath) == 0) { |
|
358 |
rv = JNI_TRUE; |
|
359 |
} |
|
360 |
} END_PLATFORM_STRING(env, toPath); |
|
361 |
} END_PLATFORM_STRING(env, fromPath); |
|
362 |
return rv; |
|
363 |
} |
|
364 |
||
365 |
JNIEXPORT jboolean JNICALL |
|
366 |
Java_java_io_UnixFileSystem_setLastModifiedTime(JNIEnv *env, jobject this, |
|
367 |
jobject file, jlong time) |
|
368 |
{ |
|
369 |
jboolean rv = JNI_FALSE; |
|
370 |
||
371 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
372 |
struct stat64 sb; |
2 | 373 |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
374 |
if (stat64(path, &sb) == 0) { |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
375 |
struct timeval tv[2]; |
2 | 376 |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
377 |
/* Preserve access time */ |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
378 |
tv[0].tv_sec = sb.st_atime; |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
379 |
tv[0].tv_usec = 0; |
2 | 380 |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
381 |
/* Change last-modified time */ |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
382 |
tv[1].tv_sec = time / 1000; |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
383 |
tv[1].tv_usec = (time % 1000) * 1000; |
2 | 384 |
|
692
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
385 |
if (utimes(path, tv) == 0) |
50a393caed65
6652379: File.setLastModified fails on large files (lnx only)
alanb
parents:
2
diff
changeset
|
386 |
rv = JNI_TRUE; |
2 | 387 |
} |
388 |
} END_PLATFORM_STRING(env, path); |
|
389 |
||
390 |
return rv; |
|
391 |
} |
|
392 |
||
393 |
||
394 |
JNIEXPORT jboolean JNICALL |
|
395 |
Java_java_io_UnixFileSystem_setReadOnly(JNIEnv *env, jobject this, |
|
396 |
jobject file) |
|
397 |
{ |
|
398 |
jboolean rv = JNI_FALSE; |
|
399 |
||
400 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
401 |
int mode; |
|
402 |
if (statMode(path, &mode)) { |
|
403 |
if (chmod(path, mode & ~(S_IWUSR | S_IWGRP | S_IWOTH)) >= 0) { |
|
404 |
rv = JNI_TRUE; |
|
405 |
} |
|
406 |
} |
|
407 |
} END_PLATFORM_STRING(env, path); |
|
408 |
return rv; |
|
409 |
} |
|
410 |
||
411 |
JNIEXPORT jlong JNICALL |
|
412 |
Java_java_io_UnixFileSystem_getSpace(JNIEnv *env, jobject this, |
|
413 |
jobject file, jint t) |
|
414 |
{ |
|
415 |
jlong rv = 0L; |
|
416 |
||
417 |
WITH_FIELD_PLATFORM_STRING(env, file, ids.path, path) { |
|
4981
3a3f498acc86
6815768: File.getxxxSpace() methods fail for very large file systems under 32bit Java
alanb
parents:
715
diff
changeset
|
418 |
struct statvfs64 fsstat; |
3a3f498acc86
6815768: File.getxxxSpace() methods fail for very large file systems under 32bit Java
alanb
parents:
715
diff
changeset
|
419 |
memset(&fsstat, 0, sizeof(fsstat)); |
3a3f498acc86
6815768: File.getxxxSpace() methods fail for very large file systems under 32bit Java
alanb
parents:
715
diff
changeset
|
420 |
if (statvfs64(path, &fsstat) == 0) { |
2 | 421 |
switch(t) { |
422 |
case java_io_FileSystem_SPACE_TOTAL: |
|
423 |
rv = jlong_mul(long_to_jlong(fsstat.f_frsize), |
|
424 |
long_to_jlong(fsstat.f_blocks)); |
|
425 |
break; |
|
426 |
case java_io_FileSystem_SPACE_FREE: |
|
427 |
rv = jlong_mul(long_to_jlong(fsstat.f_frsize), |
|
428 |
long_to_jlong(fsstat.f_bfree)); |
|
429 |
break; |
|
430 |
case java_io_FileSystem_SPACE_USABLE: |
|
431 |
rv = jlong_mul(long_to_jlong(fsstat.f_frsize), |
|
432 |
long_to_jlong(fsstat.f_bavail)); |
|
433 |
break; |
|
434 |
default: |
|
435 |
assert(0); |
|
436 |
} |
|
437 |
} |
|
438 |
} END_PLATFORM_STRING(env, path); |
|
439 |
return rv; |
|
440 |
} |