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 */ 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 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 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$FileStatus;Z)Z", 93 (void *) com_android_cts_verifier_os_FileUtils_getFileStatus }, 94 { "getUserName", "(I)Ljava/lang/String;", 95 (void *) com_android_cts_verifier_os_FileUtils_getUserName }, 96 { "getGroupName", "(I)Ljava/lang/String;", 97 (void *) com_android_cts_verifier_os_FileUtils_getGroupName }, 98 }; 99 100 int register_com_android_cts_verifier_os_FileUtils(JNIEnv* env) 101 { 102 jclass clazz = env->FindClass("com/android/cts/verifier/os/FileUtils"); 103 104 jclass fileStatusClass = env->FindClass("com/android/cts/verifier/os/FileUtils$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
