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 #include <unistd.h>
24
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 static jfieldID gFileStatusExecutableID;
38
39 /* 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)40 jboolean com_android_cts_verifier_os_FileUtils_getFileStatus(JNIEnv* env, jobject thiz,
41 jstring path, jobject fileStatus, jboolean statLinks)
42 {
43 const char* pathStr = env->GetStringUTFChars(path, NULL);
44 jboolean ret = false;
45 struct stat s;
46
47 int res = statLinks == true ? lstat(pathStr, &s) : stat(pathStr, &s);
48
49 if (res == 0) {
50 ret = true;
51 if (fileStatus != NULL) {
52 env->SetIntField(fileStatus, gFileStatusDevFieldID, s.st_dev);
53 env->SetIntField(fileStatus, gFileStatusInoFieldID, s.st_ino);
54 env->SetIntField(fileStatus, gFileStatusModeFieldID, s.st_mode);
55 env->SetIntField(fileStatus, gFileStatusNlinkFieldID, s.st_nlink);
56 env->SetIntField(fileStatus, gFileStatusUidFieldID, s.st_uid);
57 env->SetIntField(fileStatus, gFileStatusGidFieldID, s.st_gid);
58 env->SetLongField(fileStatus, gFileStatusSizeFieldID, s.st_size);
59 env->SetIntField(fileStatus, gFileStatusBlksizeFieldID, s.st_blksize);
60 env->SetLongField(fileStatus, gFileStatusBlocksFieldID, s.st_blocks);
61 env->SetLongField(fileStatus, gFileStatusAtimeFieldID, s.st_atime);
62 env->SetLongField(fileStatus, gFileStatusMtimeFieldID, s.st_mtime);
63 env->SetLongField(fileStatus, gFileStatusCtimeFieldID, s.st_ctime);
64 }
65 if (access(pathStr, X_OK) == 0) {
66 env->SetBooleanField(fileStatus, gFileStatusExecutableID, JNI_TRUE);
67 } else {
68 env->SetBooleanField(fileStatus, gFileStatusExecutableID, JNI_FALSE);
69 }
70 }
71
72 env->ReleaseStringUTFChars(path, pathStr);
73
74 return ret;
75 }
76
com_android_cts_verifier_os_FileUtils_getUserName(JNIEnv * env,jobject thiz,jint uid)77 jstring com_android_cts_verifier_os_FileUtils_getUserName(JNIEnv* env, jobject thiz,
78 jint uid)
79 {
80 struct passwd *pwd = getpwuid(uid);
81 return env->NewStringUTF(pwd->pw_name);
82 }
83
com_android_cts_verifier_os_FileUtils_getGroupName(JNIEnv * env,jobject thiz,jint gid)84 jstring com_android_cts_verifier_os_FileUtils_getGroupName(JNIEnv* env, jobject thiz,
85 jint gid)
86 {
87 struct group *grp = getgrgid(gid);
88 return env->NewStringUTF(grp->gr_name);
89 }
90
91 static JNINativeMethod gMethods[] = {
92 { "getFileStatus", "(Ljava/lang/String;Lcom/android/cts/verifier/os/FileUtils$FileStatus;Z)Z",
93 (void *) com_android_cts_verifier_os_FileUtils_getFileStatus },
94 { "getUserName", "(I)Ljava/lang/String;",
95 (void *) com_android_cts_verifier_os_FileUtils_getUserName },
96 { "getGroupName", "(I)Ljava/lang/String;",
97 (void *) com_android_cts_verifier_os_FileUtils_getGroupName },
98 };
99
register_com_android_cts_verifier_os_FileUtils(JNIEnv * env)100 int register_com_android_cts_verifier_os_FileUtils(JNIEnv* env)
101 {
102 jclass clazz = env->FindClass("com/android/cts/verifier/os/FileUtils");
103
104 jclass fileStatusClass = env->FindClass("com/android/cts/verifier/os/FileUtils$FileStatus");
105 gFileStatusDevFieldID = env->GetFieldID(fileStatusClass, "dev", "I");
106 gFileStatusInoFieldID = env->GetFieldID(fileStatusClass, "ino", "I");
107 gFileStatusModeFieldID = env->GetFieldID(fileStatusClass, "mode", "I");
108 gFileStatusNlinkFieldID = env->GetFieldID(fileStatusClass, "nlink", "I");
109 gFileStatusUidFieldID = env->GetFieldID(fileStatusClass, "uid", "I");
110 gFileStatusGidFieldID = env->GetFieldID(fileStatusClass, "gid", "I");
111 gFileStatusSizeFieldID = env->GetFieldID(fileStatusClass, "size", "J");
112 gFileStatusBlksizeFieldID = env->GetFieldID(fileStatusClass, "blksize", "I");
113 gFileStatusBlocksFieldID = env->GetFieldID(fileStatusClass, "blocks", "J");
114 gFileStatusAtimeFieldID = env->GetFieldID(fileStatusClass, "atime", "J");
115 gFileStatusMtimeFieldID = env->GetFieldID(fileStatusClass, "mtime", "J");
116 gFileStatusCtimeFieldID = env->GetFieldID(fileStatusClass, "ctime", "J");
117 gFileStatusExecutableID = env->GetFieldID(fileStatusClass, "executable", "Z");
118
119 return env->RegisterNatives(clazz, gMethods,
120 sizeof(gMethods) / sizeof(JNINativeMethod));
121 }
122