1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <jni.h>
18 #include <stdio.h>
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <grp.h>
22 #include <pwd.h>
23
24 static jclass gFileStatusClass;
25 static jfieldID gFileStatusDevFieldID;
26 static jfieldID gFileStatusInoFieldID;
27 static jfieldID gFileStatusModeFieldID;
28 static jfieldID gFileStatusNlinkFieldID;
29 static jfieldID gFileStatusUidFieldID;
30 static jfieldID gFileStatusGidFieldID;
31 static jfieldID gFileStatusSizeFieldID;
32 static jfieldID gFileStatusBlksizeFieldID;
33 static jfieldID gFileStatusBlocksFieldID;
34 static jfieldID gFileStatusAtimeFieldID;
35 static jfieldID gFileStatusMtimeFieldID;
36 static jfieldID gFileStatusCtimeFieldID;
37
38 /* Copied from hidden API: frameworks/base/core/jni/android_os_FileUtils.cpp */
com_android_cts_verifier_os_FileUtils_getFileStatus(JNIEnv * env,jobject thiz,jstring path,jobject fileStatus,jboolean statLinks)39 jboolean com_android_cts_verifier_os_FileUtils_getFileStatus(JNIEnv* env, jobject thiz,
40 jstring path, jobject fileStatus, jboolean statLinks)
41 {
42 const char* pathStr = env->GetStringUTFChars(path, NULL);
43 jboolean ret = false;
44 struct stat s;
45
46 int res = statLinks == true ? lstat(pathStr, &s) : stat(pathStr, &s);
47
48 if (res == 0) {
49 ret = true;
50 if (fileStatus != NULL) {
51 env->SetIntField(fileStatus, gFileStatusDevFieldID, s.st_dev);
52 env->SetIntField(fileStatus, gFileStatusInoFieldID, s.st_ino);
53 env->SetIntField(fileStatus, gFileStatusModeFieldID, s.st_mode);
54 env->SetIntField(fileStatus, gFileStatusNlinkFieldID, s.st_nlink);
55 env->SetIntField(fileStatus, gFileStatusUidFieldID, s.st_uid);
56 env->SetIntField(fileStatus, gFileStatusGidFieldID, s.st_gid);
57 env->SetLongField(fileStatus, gFileStatusSizeFieldID, s.st_size);
58 env->SetIntField(fileStatus, gFileStatusBlksizeFieldID, s.st_blksize);
59 env->SetLongField(fileStatus, gFileStatusBlocksFieldID, s.st_blocks);
60 env->SetLongField(fileStatus, gFileStatusAtimeFieldID, s.st_atime);
61 env->SetLongField(fileStatus, gFileStatusMtimeFieldID, s.st_mtime);
62 env->SetLongField(fileStatus, gFileStatusCtimeFieldID, s.st_ctime);
63 }
64 }
65
66 env->ReleaseStringUTFChars(path, pathStr);
67
68 return ret;
69 }
70
com_android_cts_verifier_os_FileUtils_getUserName(JNIEnv * env,jobject thiz,jint uid)71 jstring com_android_cts_verifier_os_FileUtils_getUserName(JNIEnv* env, jobject thiz,
72 jint uid)
73 {
74 struct passwd *pwd = getpwuid(uid);
75 return env->NewStringUTF(pwd->pw_name);
76 }
77
com_android_cts_verifier_os_FileUtils_getGroupName(JNIEnv * env,jobject thiz,jint gid)78 jstring com_android_cts_verifier_os_FileUtils_getGroupName(JNIEnv* env, jobject thiz,
79 jint gid)
80 {
81 struct group *grp = getgrgid(gid);
82 return env->NewStringUTF(grp->gr_name);
83 }
84
85 static JNINativeMethod gMethods[] = {
86 { "getFileStatus", "(Ljava/lang/String;Lcom/android/cts/verifier/os/FileUtils$FileStatus;Z)Z",
87 (void *) com_android_cts_verifier_os_FileUtils_getFileStatus },
88 { "getUserName", "(I)Ljava/lang/String;",
89 (void *) com_android_cts_verifier_os_FileUtils_getUserName },
90 { "getGroupName", "(I)Ljava/lang/String;",
91 (void *) com_android_cts_verifier_os_FileUtils_getGroupName },
92 };
93
register_com_android_cts_verifier_os_FileUtils(JNIEnv * env)94 int register_com_android_cts_verifier_os_FileUtils(JNIEnv* env)
95 {
96 jclass clazz = env->FindClass("com/android/cts/verifier/os/FileUtils");
97
98 gFileStatusClass = env->FindClass("com/android/cts/verifier/os/FileUtils$FileStatus");
99 gFileStatusDevFieldID = env->GetFieldID(gFileStatusClass, "dev", "I");
100 gFileStatusInoFieldID = env->GetFieldID(gFileStatusClass, "ino", "I");
101 gFileStatusModeFieldID = env->GetFieldID(gFileStatusClass, "mode", "I");
102 gFileStatusNlinkFieldID = env->GetFieldID(gFileStatusClass, "nlink", "I");
103 gFileStatusUidFieldID = env->GetFieldID(gFileStatusClass, "uid", "I");
104 gFileStatusGidFieldID = env->GetFieldID(gFileStatusClass, "gid", "I");
105 gFileStatusSizeFieldID = env->GetFieldID(gFileStatusClass, "size", "J");
106 gFileStatusBlksizeFieldID = env->GetFieldID(gFileStatusClass, "blksize", "I");
107 gFileStatusBlocksFieldID = env->GetFieldID(gFileStatusClass, "blocks", "J");
108 gFileStatusAtimeFieldID = env->GetFieldID(gFileStatusClass, "atime", "J");
109 gFileStatusMtimeFieldID = env->GetFieldID(gFileStatusClass, "mtime", "J");
110 gFileStatusCtimeFieldID = env->GetFieldID(gFileStatusClass, "ctime", "J");
111
112 return env->RegisterNatives(clazz, gMethods,
113 sizeof(gMethods) / sizeof(JNINativeMethod));
114 }
115