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 */ 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 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 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$FileStatus;Z)Z", 87 (void *) com_android_cts_verifier_os_FileUtils_getFileStatus }, 88 { "getUserName", "(I)Ljava/lang/String;", 89 (void *) com_android_cts_verifier_os_FileUtils_getUserName }, 90 { "getGroupName", "(I)Ljava/lang/String;", 91 (void *) com_android_cts_verifier_os_FileUtils_getGroupName }, 92 }; 93 94 int register_com_android_cts_verifier_os_FileUtils(JNIEnv* env) 95 { 96 jclass clazz = env->FindClass("com/android/cts/verifier/os/FileUtils"); 97 98 gFileStatusClass = env->FindClass("com/android/cts/verifier/os/FileUtils$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