893N/A/*
2362N/A * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
893N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
893N/A *
893N/A * This code is free software; you can redistribute it and/or modify it
893N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
893N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
893N/A *
893N/A * This code is distributed in the hope that it will be useful, but WITHOUT
893N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
893N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
893N/A * version 2 for more details (a copy is included in the LICENSE file that
893N/A * accompanied this code).
893N/A *
893N/A * You should have received a copy of the GNU General Public License version
893N/A * 2 along with this work; if not, write to the Free Software Foundation,
893N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
893N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
893N/A */
893N/A
893N/A#include "jni.h"
893N/A#include "jni_util.h"
893N/A#include "jvm.h"
893N/A#include "jlong.h"
893N/A
893N/A#include <stdio.h>
5316N/A#include <string.h>
893N/A#include <dlfcn.h>
893N/A#include <errno.h>
893N/A#include <mntent.h>
893N/A
893N/A#include "sun_nio_fs_LinuxNativeDispatcher.h"
893N/A
893N/Atypedef size_t fgetxattr_func(int fd, const char* name, void* value, size_t size);
893N/Atypedef int fsetxattr_func(int fd, const char* name, void* value, size_t size, int flags);
893N/Atypedef int fremovexattr_func(int fd, const char* name);
893N/Atypedef int flistxattr_func(int fd, char* list, size_t size);
893N/A
893N/Afgetxattr_func* my_fgetxattr_func = NULL;
893N/Afsetxattr_func* my_fsetxattr_func = NULL;
893N/Afremovexattr_func* my_fremovexattr_func = NULL;
893N/Aflistxattr_func* my_flistxattr_func = NULL;
893N/A
5316N/Astatic jfieldID entry_name;
5316N/Astatic jfieldID entry_dir;
5316N/Astatic jfieldID entry_fstype;
5316N/Astatic jfieldID entry_options;
5316N/A
893N/Astatic void throwUnixException(JNIEnv* env, int errnum) {
893N/A jobject x = JNU_NewObjectByName(env, "sun/nio/fs/UnixException",
893N/A "(I)V", errnum);
893N/A if (x != NULL) {
893N/A (*env)->Throw(env, x);
893N/A }
893N/A}
893N/A
893N/AJNIEXPORT void JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_init(JNIEnv *env, jclass clazz)
893N/A{
893N/A my_fgetxattr_func = (fgetxattr_func*)dlsym(RTLD_DEFAULT, "fgetxattr");
893N/A my_fsetxattr_func = (fsetxattr_func*)dlsym(RTLD_DEFAULT, "fsetxattr");
893N/A my_fremovexattr_func = (fremovexattr_func*)dlsym(RTLD_DEFAULT, "fremovexattr");
893N/A my_flistxattr_func = (flistxattr_func*)dlsym(RTLD_DEFAULT, "flistxattr");
5316N/A
5316N/A clazz = (*env)->FindClass(env, "sun/nio/fs/UnixMountEntry");
5316N/A if (clazz == NULL)
5316N/A return;
5316N/A
5316N/A entry_name = (*env)->GetFieldID(env, clazz, "name", "[B");
5316N/A entry_dir = (*env)->GetFieldID(env, clazz, "dir", "[B");
5316N/A entry_fstype = (*env)->GetFieldID(env, clazz, "fstype", "[B");
5316N/A entry_options = (*env)->GetFieldID(env, clazz, "opts", "[B");
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_fgetxattr0(JNIEnv* env, jclass clazz,
893N/A jint fd, jlong nameAddress, jlong valueAddress, jint valueLen)
893N/A{
893N/A size_t res = -1;
893N/A const char* name = jlong_to_ptr(nameAddress);
893N/A void* value = jlong_to_ptr(valueAddress);
893N/A
893N/A if (my_fgetxattr_func == NULL) {
893N/A errno = ENOTSUP;
893N/A } else {
893N/A /* EINTR not documented */
893N/A res = (*my_fgetxattr_func)(fd, name, value, valueLen);
893N/A }
893N/A if (res == (size_t)-1)
893N/A throwUnixException(env, errno);
893N/A return (jint)res;
893N/A}
893N/A
893N/AJNIEXPORT void JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_fsetxattr0(JNIEnv* env, jclass clazz,
893N/A jint fd, jlong nameAddress, jlong valueAddress, jint valueLen)
893N/A{
893N/A int res = -1;
893N/A const char* name = jlong_to_ptr(nameAddress);
893N/A void* value = jlong_to_ptr(valueAddress);
893N/A
893N/A if (my_fsetxattr_func == NULL) {
893N/A errno = ENOTSUP;
893N/A } else {
893N/A /* EINTR not documented */
893N/A res = (*my_fsetxattr_func)(fd, name, value, valueLen, 0);
893N/A }
893N/A if (res == -1)
893N/A throwUnixException(env, errno);
893N/A}
893N/A
893N/AJNIEXPORT void JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_fremovexattr0(JNIEnv* env, jclass clazz,
893N/A jint fd, jlong nameAddress)
893N/A{
893N/A int res = -1;
893N/A const char* name = jlong_to_ptr(nameAddress);
893N/A
893N/A if (my_fremovexattr_func == NULL) {
893N/A errno = ENOTSUP;
893N/A } else {
893N/A /* EINTR not documented */
893N/A res = (*my_fremovexattr_func)(fd, name);
893N/A }
893N/A if (res == -1)
893N/A throwUnixException(env, errno);
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_flistxattr(JNIEnv* env, jclass clazz,
893N/A jint fd, jlong listAddress, jint size)
893N/A{
893N/A size_t res = -1;
893N/A char* list = jlong_to_ptr(listAddress);
893N/A
893N/A if (my_flistxattr_func == NULL) {
893N/A errno = ENOTSUP;
893N/A } else {
893N/A /* EINTR not documented */
893N/A res = (*my_flistxattr_func)(fd, list, (size_t)size);
893N/A }
893N/A if (res == (size_t)-1)
893N/A throwUnixException(env, errno);
893N/A return (jint)res;
893N/A}
893N/A
893N/AJNIEXPORT jlong JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_setmntent0(JNIEnv* env, jclass this, jlong pathAddress,
893N/A jlong modeAddress)
893N/A{
893N/A FILE* fp = NULL;
893N/A const char* path = (const char*)jlong_to_ptr(pathAddress);
893N/A const char* mode = (const char*)jlong_to_ptr(modeAddress);
893N/A
893N/A do {
893N/A fp = setmntent(path, mode);
893N/A } while (fp == NULL && errno == EINTR);
893N/A if (fp == NULL) {
893N/A throwUnixException(env, errno);
893N/A }
893N/A return ptr_to_jlong(fp);
893N/A}
893N/A
5316N/AJNIEXPORT jint JNICALL
5316N/AJava_sun_nio_fs_LinuxNativeDispatcher_getmntent(JNIEnv* env, jclass this,
5316N/A jlong value, jobject entry)
5316N/A{
5316N/A struct mntent ent;
5316N/A char buf[1024];
5316N/A int buflen = sizeof(buf);
5316N/A struct mntent* m;
5316N/A FILE* fp = jlong_to_ptr(value);
5316N/A jsize len;
5316N/A jbyteArray bytes;
5316N/A char* name;
5316N/A char* dir;
5316N/A char* fstype;
5316N/A char* options;
5316N/A
5316N/A m = getmntent_r(fp, &ent, (char*)&buf, buflen);
5316N/A if (m == NULL)
5316N/A return -1;
5316N/A name = m->mnt_fsname;
5316N/A dir = m->mnt_dir;
5316N/A fstype = m->mnt_type;
5316N/A options = m->mnt_opts;
5316N/A
5316N/A len = strlen(name);
5316N/A bytes = (*env)->NewByteArray(env, len);
5316N/A if (bytes == NULL)
5316N/A return -1;
5316N/A (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)name);
5316N/A (*env)->SetObjectField(env, entry, entry_name, bytes);
5316N/A
5316N/A len = strlen(dir);
5316N/A bytes = (*env)->NewByteArray(env, len);
5316N/A if (bytes == NULL)
5316N/A return -1;
5316N/A (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)dir);
5316N/A (*env)->SetObjectField(env, entry, entry_dir, bytes);
5316N/A
5316N/A len = strlen(fstype);
5316N/A bytes = (*env)->NewByteArray(env, len);
5316N/A if (bytes == NULL)
5316N/A return -1;
5316N/A (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)fstype);
5316N/A (*env)->SetObjectField(env, entry, entry_fstype, bytes);
5316N/A
5316N/A len = strlen(options);
5316N/A bytes = (*env)->NewByteArray(env, len);
5316N/A if (bytes == NULL)
5316N/A return -1;
5316N/A (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)options);
5316N/A (*env)->SetObjectField(env, entry, entry_options, bytes);
5316N/A
5316N/A return 0;
5316N/A}
5316N/A
893N/AJNIEXPORT void JNICALL
893N/AJava_sun_nio_fs_LinuxNativeDispatcher_endmntent(JNIEnv* env, jclass this, jlong stream)
893N/A{
893N/A FILE* fp = jlong_to_ptr(stream);
893N/A /* FIXME - man page doesn't explain how errors are returned */
893N/A endmntent(fp);
893N/A}