The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* //device/libs/android_runtime/android_util_Process.cpp |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #define LOG_TAG "FileUtils" |
| 19 | |
| 20 | #include <utils/Log.h> |
| 21 | |
| 22 | #include <android_runtime/AndroidRuntime.h> |
| 23 | |
| 24 | #include "JNIHelp.h" |
| 25 | |
| 26 | #include <sys/errno.h> |
| 27 | #include <sys/stat.h> |
| 28 | #include <sys/types.h> |
| 29 | #include <fcntl.h> |
| 30 | #include <signal.h> |
| 31 | |
| 32 | #if HAVE_ANDROID_OS |
| 33 | #include <sys/ioctl.h> |
| 34 | #include <linux/msdos_fs.h> |
| 35 | #endif |
| 36 | |
| 37 | namespace android { |
| 38 | |
| 39 | static jclass gFileStatusClass; |
| 40 | static jfieldID gFileStatusDevFieldID; |
| 41 | static jfieldID gFileStatusInoFieldID; |
| 42 | static jfieldID gFileStatusModeFieldID; |
| 43 | static jfieldID gFileStatusNlinkFieldID; |
| 44 | static jfieldID gFileStatusUidFieldID; |
| 45 | static jfieldID gFileStatusGidFieldID; |
| 46 | static jfieldID gFileStatusSizeFieldID; |
| 47 | static jfieldID gFileStatusBlksizeFieldID; |
| 48 | static jfieldID gFileStatusBlocksFieldID; |
| 49 | static jfieldID gFileStatusAtimeFieldID; |
| 50 | static jfieldID gFileStatusMtimeFieldID; |
| 51 | static jfieldID gFileStatusCtimeFieldID; |
| 52 | |
| 53 | jint android_os_FileUtils_setPermissions(JNIEnv* env, jobject clazz, |
| 54 | jstring file, jint mode, |
| 55 | jint uid, jint gid) |
| 56 | { |
| 57 | #if HAVE_ANDROID_OS |
| 58 | const jchar* str = env->GetStringCritical(file, 0); |
| 59 | String8 file8; |
| 60 | if (str) { |
| 61 | file8 = String8(str, env->GetStringLength(file)); |
| 62 | env->ReleaseStringCritical(file, str); |
| 63 | } |
| 64 | if (file8.size() <= 0) { |
| 65 | return ENOENT; |
| 66 | } |
| 67 | if (uid >= 0 || gid >= 0) { |
| 68 | int res = chown(file8.string(), uid, gid); |
| 69 | if (res != 0) { |
| 70 | return errno; |
| 71 | } |
| 72 | } |
| 73 | return chmod(file8.string(), mode) == 0 ? 0 : errno; |
| 74 | #else |
| 75 | return ENOSYS; |
| 76 | #endif |
| 77 | } |
| 78 | |
| 79 | jint android_os_FileUtils_getPermissions(JNIEnv* env, jobject clazz, |
| 80 | jstring file, jintArray outArray) |
| 81 | { |
| 82 | #if HAVE_ANDROID_OS |
| 83 | const jchar* str = env->GetStringCritical(file, 0); |
| 84 | String8 file8; |
| 85 | if (str) { |
| 86 | file8 = String8(str, env->GetStringLength(file)); |
| 87 | env->ReleaseStringCritical(file, str); |
| 88 | } |
| 89 | if (file8.size() <= 0) { |
| 90 | return ENOENT; |
| 91 | } |
| 92 | struct stat st; |
| 93 | if (stat(file8.string(), &st) != 0) { |
| 94 | return errno; |
| 95 | } |
| 96 | jint* array = (jint*)env->GetPrimitiveArrayCritical(outArray, 0); |
| 97 | if (array) { |
| 98 | int len = env->GetArrayLength(outArray); |
| 99 | if (len >= 1) { |
| 100 | array[0] = st.st_mode; |
| 101 | } |
| 102 | if (len >= 2) { |
| 103 | array[1] = st.st_uid; |
| 104 | } |
| 105 | if (len >= 3) { |
| 106 | array[2] = st.st_gid; |
| 107 | } |
| 108 | } |
| 109 | env->ReleasePrimitiveArrayCritical(outArray, array, 0); |
| 110 | return 0; |
| 111 | #else |
| 112 | return ENOSYS; |
| 113 | #endif |
| 114 | } |
| 115 | |
Mike Lockwood | 90960e8 | 2010-08-06 09:15:25 -0400 | [diff] [blame] | 116 | jint android_os_FileUtils_setUMask(JNIEnv* env, jobject clazz, jint mask) |
| 117 | { |
| 118 | return umask(mask); |
| 119 | } |
| 120 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 121 | jint android_os_FileUtils_getFatVolumeId(JNIEnv* env, jobject clazz, jstring path) |
| 122 | { |
| 123 | #if HAVE_ANDROID_OS |
| 124 | if (path == NULL) { |
| 125 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 126 | return -1; |
| 127 | } |
| 128 | const char *pathStr = env->GetStringUTFChars(path, NULL); |
| 129 | int result = -1; |
| 130 | // only if our system supports this ioctl |
| 131 | #ifdef VFAT_IOCTL_GET_VOLUME_ID |
| 132 | int fd = open(pathStr, O_RDONLY); |
| 133 | if (fd >= 0) { |
| 134 | result = ioctl(fd, VFAT_IOCTL_GET_VOLUME_ID); |
| 135 | close(fd); |
| 136 | } |
| 137 | #endif |
| 138 | |
| 139 | env->ReleaseStringUTFChars(path, pathStr); |
| 140 | return result; |
| 141 | #else |
| 142 | return -1; |
| 143 | #endif |
| 144 | } |
| 145 | |
| 146 | jboolean android_os_FileUtils_getFileStatus(JNIEnv* env, jobject clazz, jstring path, jobject fileStatus) { |
| 147 | const char* pathStr = env->GetStringUTFChars(path, NULL); |
| 148 | jboolean ret = false; |
| 149 | |
| 150 | struct stat s; |
| 151 | int res = stat(pathStr, &s); |
| 152 | if (res == 0) { |
| 153 | ret = true; |
| 154 | if (fileStatus != NULL) { |
| 155 | env->SetIntField(fileStatus, gFileStatusDevFieldID, s.st_dev); |
| 156 | env->SetIntField(fileStatus, gFileStatusInoFieldID, s.st_ino); |
| 157 | env->SetIntField(fileStatus, gFileStatusModeFieldID, s.st_mode); |
| 158 | env->SetIntField(fileStatus, gFileStatusNlinkFieldID, s.st_nlink); |
| 159 | env->SetIntField(fileStatus, gFileStatusUidFieldID, s.st_uid); |
| 160 | env->SetIntField(fileStatus, gFileStatusGidFieldID, s.st_gid); |
| 161 | env->SetLongField(fileStatus, gFileStatusSizeFieldID, s.st_size); |
| 162 | env->SetIntField(fileStatus, gFileStatusBlksizeFieldID, s.st_blksize); |
| 163 | env->SetLongField(fileStatus, gFileStatusBlocksFieldID, s.st_blocks); |
| 164 | env->SetLongField(fileStatus, gFileStatusAtimeFieldID, s.st_atime); |
| 165 | env->SetLongField(fileStatus, gFileStatusMtimeFieldID, s.st_mtime); |
| 166 | env->SetLongField(fileStatus, gFileStatusCtimeFieldID, s.st_ctime); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | env->ReleaseStringUTFChars(path, pathStr); |
| 171 | |
| 172 | return ret; |
| 173 | } |
| 174 | |
| 175 | static const JNINativeMethod methods[] = { |
| 176 | {"setPermissions", "(Ljava/lang/String;III)I", (void*)android_os_FileUtils_setPermissions}, |
| 177 | {"getPermissions", "(Ljava/lang/String;[I)I", (void*)android_os_FileUtils_getPermissions}, |
Mike Lockwood | 90960e8 | 2010-08-06 09:15:25 -0400 | [diff] [blame] | 178 | {"setUMask", "(I)I", (void*)android_os_FileUtils_setUMask}, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 179 | {"getFatVolumeId", "(Ljava/lang/String;)I", (void*)android_os_FileUtils_getFatVolumeId}, |
| 180 | {"getFileStatus", "(Ljava/lang/String;Landroid/os/FileUtils$FileStatus;)Z", (void*)android_os_FileUtils_getFileStatus}, |
| 181 | }; |
| 182 | |
| 183 | static const char* const kFileUtilsPathName = "android/os/FileUtils"; |
| 184 | |
| 185 | int register_android_os_FileUtils(JNIEnv* env) |
| 186 | { |
| 187 | jclass clazz; |
| 188 | |
| 189 | clazz = env->FindClass(kFileUtilsPathName); |
| 190 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.FileUtils"); |
| 191 | |
| 192 | gFileStatusClass = env->FindClass("android/os/FileUtils$FileStatus"); |
| 193 | LOG_FATAL_IF(gFileStatusClass == NULL, "Unable to find class android.os.FileUtils$FileStatus"); |
| 194 | |
| 195 | gFileStatusDevFieldID = env->GetFieldID(gFileStatusClass, "dev", "I"); |
| 196 | gFileStatusInoFieldID = env->GetFieldID(gFileStatusClass, "ino", "I"); |
| 197 | gFileStatusModeFieldID = env->GetFieldID(gFileStatusClass, "mode", "I"); |
| 198 | gFileStatusNlinkFieldID = env->GetFieldID(gFileStatusClass, "nlink", "I"); |
| 199 | gFileStatusUidFieldID = env->GetFieldID(gFileStatusClass, "uid", "I"); |
| 200 | gFileStatusGidFieldID = env->GetFieldID(gFileStatusClass, "gid", "I"); |
| 201 | gFileStatusSizeFieldID = env->GetFieldID(gFileStatusClass, "size", "J"); |
| 202 | gFileStatusBlksizeFieldID = env->GetFieldID(gFileStatusClass, "blksize", "I"); |
| 203 | gFileStatusBlocksFieldID = env->GetFieldID(gFileStatusClass, "blocks", "J"); |
| 204 | gFileStatusAtimeFieldID = env->GetFieldID(gFileStatusClass, "atime", "J"); |
| 205 | gFileStatusMtimeFieldID = env->GetFieldID(gFileStatusClass, "mtime", "J"); |
| 206 | gFileStatusCtimeFieldID = env->GetFieldID(gFileStatusClass, "ctime", "J"); |
| 207 | |
| 208 | return AndroidRuntime::registerNativeMethods( |
| 209 | env, kFileUtilsPathName, |
| 210 | methods, NELEM(methods)); |
| 211 | } |
| 212 | |
| 213 | } |
| 214 | |