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/* //device/libs/android_runtime/android_util_Process.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#define LOG_TAG "FileUtils"
#include <utils/Log.h>
#include <android_runtime/AndroidRuntime.h>
#include "JNIHelp.h"
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <linux/msdos_fs.h>
namespace android {
static jfieldID gFileStatusDevFieldID;
static jfieldID gFileStatusInoFieldID;
static jfieldID gFileStatusModeFieldID;
static jfieldID gFileStatusNlinkFieldID;
static jfieldID gFileStatusUidFieldID;
static jfieldID gFileStatusGidFieldID;
static jfieldID gFileStatusSizeFieldID;
static jfieldID gFileStatusBlksizeFieldID;
static jfieldID gFileStatusBlocksFieldID;
static jfieldID gFileStatusAtimeFieldID;
static jfieldID gFileStatusMtimeFieldID;
static jfieldID gFileStatusCtimeFieldID;
jint android_os_FileUtils_setPermissions(JNIEnv* env, jobject clazz,
jstring file, jint mode,
jint uid, jint gid)
{
const jchar* str = env->GetStringCritical(file, 0);
String8 file8;
if (str) {
file8 = String8(str, env->GetStringLength(file));
env->ReleaseStringCritical(file, str);
}
if (file8.size() <= 0) {
return ENOENT;
}
if (uid >= 0 || gid >= 0) {
int res = chown(file8.string(), uid, gid);
if (res != 0) {
return errno;
}
}
return chmod(file8.string(), mode) == 0 ? 0 : errno;
}
jint android_os_FileUtils_getPermissions(JNIEnv* env, jobject clazz,
jstring file, jintArray outArray)
{
const jchar* str = env->GetStringCritical(file, 0);
String8 file8;
if (str) {
file8 = String8(str, env->GetStringLength(file));
env->ReleaseStringCritical(file, str);
}
if (file8.size() <= 0) {
return ENOENT;
}
struct stat st;
if (stat(file8.string(), &st) != 0) {
return errno;
}
jint* array = (jint*)env->GetPrimitiveArrayCritical(outArray, 0);
if (array) {
int len = env->GetArrayLength(outArray);
if (len >= 1) {
array[0] = st.st_mode;
}
if (len >= 2) {
array[1] = st.st_uid;
}
if (len >= 3) {
array[2] = st.st_gid;
}
}
env->ReleasePrimitiveArrayCritical(outArray, array, 0);
return 0;
}
jint android_os_FileUtils_setUMask(JNIEnv* env, jobject clazz, jint mask)
{
return umask(mask);
}
jint android_os_FileUtils_getFatVolumeId(JNIEnv* env, jobject clazz, jstring path)
{
if (path == NULL) {
jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
return -1;
}
const char *pathStr = env->GetStringUTFChars(path, NULL);
int result = -1;
// only if our system supports this ioctl
#ifdef VFAT_IOCTL_GET_VOLUME_ID
int fd = open(pathStr, O_RDONLY);
if (fd >= 0) {
result = ioctl(fd, VFAT_IOCTL_GET_VOLUME_ID);
close(fd);
}
#endif
env->ReleaseStringUTFChars(path, pathStr);
return result;
}
jboolean android_os_FileUtils_getFileStatus(JNIEnv* env, jobject clazz, jstring path, jobject fileStatus) {
const char* pathStr = env->GetStringUTFChars(path, NULL);
jboolean ret = false;
struct stat s;
int res = stat(pathStr, &s);
if (res == 0) {
ret = true;
if (fileStatus != NULL) {
env->SetIntField(fileStatus, gFileStatusDevFieldID, s.st_dev);
env->SetIntField(fileStatus, gFileStatusInoFieldID, s.st_ino);
env->SetIntField(fileStatus, gFileStatusModeFieldID, s.st_mode);
env->SetIntField(fileStatus, gFileStatusNlinkFieldID, s.st_nlink);
env->SetIntField(fileStatus, gFileStatusUidFieldID, s.st_uid);
env->SetIntField(fileStatus, gFileStatusGidFieldID, s.st_gid);
env->SetLongField(fileStatus, gFileStatusSizeFieldID, s.st_size);
env->SetIntField(fileStatus, gFileStatusBlksizeFieldID, s.st_blksize);
env->SetLongField(fileStatus, gFileStatusBlocksFieldID, s.st_blocks);
env->SetLongField(fileStatus, gFileStatusAtimeFieldID, s.st_atime);
env->SetLongField(fileStatus, gFileStatusMtimeFieldID, s.st_mtime);
env->SetLongField(fileStatus, gFileStatusCtimeFieldID, s.st_ctime);
}
}
env->ReleaseStringUTFChars(path, pathStr);
return ret;
}
static const JNINativeMethod methods[] = {
{"setPermissions", "(Ljava/lang/String;III)I", (void*)android_os_FileUtils_setPermissions},
{"getPermissions", "(Ljava/lang/String;[I)I", (void*)android_os_FileUtils_getPermissions},
{"setUMask", "(I)I", (void*)android_os_FileUtils_setUMask},
{"getFatVolumeId", "(Ljava/lang/String;)I", (void*)android_os_FileUtils_getFatVolumeId},
{"getFileStatusNative", "(Ljava/lang/String;Landroid/os/FileUtils$FileStatus;)Z", (void*)android_os_FileUtils_getFileStatus},
};
static const char* const kFileUtilsPathName = "android/os/FileUtils";
int register_android_os_FileUtils(JNIEnv* env)
{
jclass fileStatusClass = env->FindClass("android/os/FileUtils$FileStatus");
LOG_FATAL_IF(fileStatusClass == NULL, "Unable to find class android.os.FileUtils$FileStatus");
gFileStatusDevFieldID = env->GetFieldID(fileStatusClass, "dev", "I");
gFileStatusInoFieldID = env->GetFieldID(fileStatusClass, "ino", "I");
gFileStatusModeFieldID = env->GetFieldID(fileStatusClass, "mode", "I");
gFileStatusNlinkFieldID = env->GetFieldID(fileStatusClass, "nlink", "I");
gFileStatusUidFieldID = env->GetFieldID(fileStatusClass, "uid", "I");
gFileStatusGidFieldID = env->GetFieldID(fileStatusClass, "gid", "I");
gFileStatusSizeFieldID = env->GetFieldID(fileStatusClass, "size", "J");
gFileStatusBlksizeFieldID = env->GetFieldID(fileStatusClass, "blksize", "I");
gFileStatusBlocksFieldID = env->GetFieldID(fileStatusClass, "blocks", "J");
gFileStatusAtimeFieldID = env->GetFieldID(fileStatusClass, "atime", "J");
gFileStatusMtimeFieldID = env->GetFieldID(fileStatusClass, "mtime", "J");
gFileStatusCtimeFieldID = env->GetFieldID(fileStatusClass, "ctime", "J");
return AndroidRuntime::registerNativeMethods(
env, kFileUtilsPathName,
methods, NELEM(methods));
}
}
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