| /* |
| * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <limits.h> |
| #include <fcntl.h> |
| #include <dirent.h> |
| #include <unistd.h> |
| #include <pwd.h> |
| #include <grp.h> |
| #include <errno.h> |
| #include <dlfcn.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/statvfs.h> |
| #include <sys/time.h> |
| |
| #ifdef __solaris__ |
| #include <strings.h> |
| #include <sys/mnttab.h> |
| #include <sys/mkdev.h> |
| #endif |
| |
| #ifdef __linux__ |
| #include <string.h> |
| #include <mntent.h> |
| #endif |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| #include "jlong.h" |
| |
| #include "sun_nio_fs_UnixNativeDispatcher.h" |
| |
| /** |
| * Size of password or group entry when not available via sysconf |
| */ |
| #define ENT_BUF_SIZE 1024 |
| |
| #define RESTARTABLE(_cmd, _result) do { \ |
| do { \ |
| _result = _cmd; \ |
| } while((_result == -1) && (errno == EINTR)); \ |
| } while(0) |
| |
| #define RESTARTABLE_RETURN_PTR(_cmd, _result) do { \ |
| do { \ |
| _result = _cmd; \ |
| } while((_result == NULL) && (errno == EINTR)); \ |
| } while(0) |
| |
| static jfieldID attrs_st_mode; |
| static jfieldID attrs_st_ino; |
| static jfieldID attrs_st_dev; |
| static jfieldID attrs_st_rdev; |
| static jfieldID attrs_st_nlink; |
| static jfieldID attrs_st_uid; |
| static jfieldID attrs_st_gid; |
| static jfieldID attrs_st_size; |
| static jfieldID attrs_st_atime; |
| static jfieldID attrs_st_mtime; |
| static jfieldID attrs_st_ctime; |
| |
| static jfieldID attrs_f_frsize; |
| static jfieldID attrs_f_blocks; |
| static jfieldID attrs_f_bfree; |
| static jfieldID attrs_f_bavail; |
| |
| static jfieldID entry_name; |
| static jfieldID entry_dir; |
| static jfieldID entry_fstype; |
| static jfieldID entry_options; |
| static jfieldID entry_dev; |
| |
| /** |
| * System calls that may not be available at run time. |
| */ |
| typedef int openat64_func(int, const char *, int, ...); |
| typedef int fstatat64_func(int, const char *, struct stat64 *, int); |
| typedef int unlinkat_func(int, const char*, int); |
| typedef int renameat_func(int, const char*, int, const char*); |
| typedef int futimesat_func(int, const char *, const struct timeval *); |
| typedef DIR* fdopendir_func(int); |
| |
| static openat64_func* my_openat64_func = NULL; |
| static fstatat64_func* my_fstatat64_func = NULL; |
| static unlinkat_func* my_unlinkat_func = NULL; |
| static renameat_func* my_renameat_func = NULL; |
| static futimesat_func* my_futimesat_func = NULL; |
| static fdopendir_func* my_fdopendir_func = NULL; |
| |
| /** |
| * fstatat missing from glibc on Linux. Temporary workaround |
| * for x86/x64. |
| */ |
| #if defined(__linux__) && defined(__i386) |
| #define FSTATAT64_SYSCALL_AVAILABLE |
| static int fstatat64_wrapper(int dfd, const char *path, |
| struct stat64 *statbuf, int flag) |
| { |
| #ifndef __NR_fstatat64 |
| #define __NR_fstatat64 300 |
| #endif |
| return syscall(__NR_fstatat64, dfd, path, statbuf, flag); |
| } |
| #endif |
| |
| #if defined(__linux__) && defined(__x86_64__) |
| #define FSTATAT64_SYSCALL_AVAILABLE |
| static int fstatat64_wrapper(int dfd, const char *path, |
| struct stat64 *statbuf, int flag) |
| { |
| #ifndef __NR_newfstatat |
| #define __NR_newfstatat 262 |
| #endif |
| return syscall(__NR_newfstatat, dfd, path, statbuf, flag); |
| } |
| #endif |
| |
| /** |
| * Call this to throw an internal UnixException when a system/library |
| * call fails |
| */ |
| static void throwUnixException(JNIEnv* env, int errnum) { |
| jobject x = JNU_NewObjectByName(env, "sun/nio/fs/UnixException", |
| "(I)V", errnum); |
| if (x != NULL) { |
| (*env)->Throw(env, x); |
| } |
| } |
| |
| /** |
| * Initialization |
| */ |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_init(JNIEnv* env, jclass this) |
| { |
| jint flags = 0; |
| jclass clazz; |
| |
| clazz = (*env)->FindClass(env, "sun/nio/fs/UnixFileAttributes"); |
| if (clazz == NULL) { |
| return 0; |
| } |
| attrs_st_mode = (*env)->GetFieldID(env, clazz, "st_mode", "I"); |
| attrs_st_ino = (*env)->GetFieldID(env, clazz, "st_ino", "J"); |
| attrs_st_dev = (*env)->GetFieldID(env, clazz, "st_dev", "J"); |
| attrs_st_rdev = (*env)->GetFieldID(env, clazz, "st_rdev", "J"); |
| attrs_st_nlink = (*env)->GetFieldID(env, clazz, "st_nlink", "I"); |
| attrs_st_uid = (*env)->GetFieldID(env, clazz, "st_uid", "I"); |
| attrs_st_gid = (*env)->GetFieldID(env, clazz, "st_gid", "I"); |
| attrs_st_size = (*env)->GetFieldID(env, clazz, "st_size", "J"); |
| attrs_st_atime = (*env)->GetFieldID(env, clazz, "st_atime", "J"); |
| attrs_st_mtime = (*env)->GetFieldID(env, clazz, "st_mtime", "J"); |
| attrs_st_ctime = (*env)->GetFieldID(env, clazz, "st_ctime", "J"); |
| |
| clazz = (*env)->FindClass(env, "sun/nio/fs/UnixFileStoreAttributes"); |
| if (clazz == NULL) { |
| return 0; |
| } |
| attrs_f_frsize = (*env)->GetFieldID(env, clazz, "f_frsize", "J"); |
| attrs_f_blocks = (*env)->GetFieldID(env, clazz, "f_blocks", "J"); |
| attrs_f_bfree = (*env)->GetFieldID(env, clazz, "f_bfree", "J"); |
| attrs_f_bavail = (*env)->GetFieldID(env, clazz, "f_bavail", "J"); |
| |
| clazz = (*env)->FindClass(env, "sun/nio/fs/UnixMountEntry"); |
| if (clazz == NULL) { |
| return 0; |
| } |
| entry_name = (*env)->GetFieldID(env, clazz, "name", "[B"); |
| entry_dir = (*env)->GetFieldID(env, clazz, "dir", "[B"); |
| entry_fstype = (*env)->GetFieldID(env, clazz, "fstype", "[B"); |
| entry_options = (*env)->GetFieldID(env, clazz, "opts", "[B"); |
| entry_dev = (*env)->GetFieldID(env, clazz, "dev", "J"); |
| |
| /* system calls that might not be available at run time */ |
| |
| #if defined(__solaris__) && defined(_LP64) |
| /* Solaris 64-bit does not have openat64/fstatat64 */ |
| my_openat64_func = (openat64_func*)dlsym(RTLD_DEFAULT, "openat"); |
| my_fstatat64_func = (fstatat64_func*)dlsym(RTLD_DEFAULT, "fstatat"); |
| #else |
| my_openat64_func = (openat64_func*) dlsym(RTLD_DEFAULT, "openat64"); |
| my_fstatat64_func = (fstatat64_func*) dlsym(RTLD_DEFAULT, "fstatat64"); |
| #endif |
| my_unlinkat_func = (unlinkat_func*) dlsym(RTLD_DEFAULT, "unlinkat"); |
| my_renameat_func = (renameat_func*) dlsym(RTLD_DEFAULT, "renameat"); |
| my_futimesat_func = (futimesat_func*) dlsym(RTLD_DEFAULT, "futimesat"); |
| my_fdopendir_func = (fdopendir_func*) dlsym(RTLD_DEFAULT, "fdopendir"); |
| |
| #if defined(FSTATAT64_SYSCALL_AVAILABLE) |
| /* fstatat64 missing from glibc */ |
| if (my_fstatat64_func == NULL) |
| my_fstatat64_func = (fstatat64_func*)&fstatat64_wrapper; |
| #endif |
| |
| if (my_openat64_func != NULL && my_fstatat64_func != NULL && |
| my_unlinkat_func != NULL && my_renameat_func != NULL && |
| my_futimesat_func != NULL && my_fdopendir_func != NULL) |
| { |
| flags |= sun_nio_fs_UnixNativeDispatcher_HAS_AT_SYSCALLS; |
| } |
| |
| return flags; |
| } |
| |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_getcwd(JNIEnv* env, jclass this) { |
| jbyteArray result = NULL; |
| char buf[PATH_MAX+1]; |
| |
| /* EINTR not listed as a possible error */ |
| char* cwd = getcwd(buf, sizeof(buf)); |
| if (cwd == NULL) { |
| throwUnixException(env, errno); |
| } else { |
| jsize len = (jsize)strlen(buf); |
| result = (*env)->NewByteArray(env, len); |
| if (result != NULL) { |
| (*env)->SetByteArrayRegion(env, result, 0, len, (jbyte*)buf); |
| } |
| } |
| return result; |
| } |
| |
| JNIEXPORT jbyteArray |
| Java_sun_nio_fs_UnixNativeDispatcher_strerror(JNIEnv* env, jclass this, jint error) |
| { |
| char* msg; |
| jsize len; |
| jbyteArray bytes; |
| |
| msg = strerror((int)error); |
| len = strlen(msg); |
| bytes = (*env)->NewByteArray(env, len); |
| if (bytes != NULL) { |
| (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)msg); |
| } |
| return bytes; |
| } |
| |
| JNIEXPORT jint |
| Java_sun_nio_fs_UnixNativeDispatcher_dup(JNIEnv* env, jclass this, jint fd) { |
| |
| int res = -1; |
| |
| RESTARTABLE(dup((int)fd), res); |
| if (fd == -1) { |
| throwUnixException(env, errno); |
| } |
| return (jint)res; |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fopen0(JNIEnv* env, jclass this, |
| jlong pathAddress, jlong modeAddress) |
| { |
| FILE* fp = NULL; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| const char* mode = (const char*)jlong_to_ptr(modeAddress); |
| |
| do { |
| fp = fopen(path, mode); |
| } while (fp == NULL && errno == EINTR); |
| |
| if (fp == NULL) { |
| throwUnixException(env, errno); |
| } |
| |
| return ptr_to_jlong(fp); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fclose(JNIEnv* env, jclass this, jlong stream) |
| { |
| int res; |
| FILE* fp = jlong_to_ptr(stream); |
| |
| do { |
| res = fclose(fp); |
| } while (res == EOF && errno == EINTR); |
| if (res == EOF) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_open0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint oflags, jint mode) |
| { |
| jint fd; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(open64(path, (int)oflags, (mode_t)mode), fd); |
| if (fd == -1) { |
| throwUnixException(env, errno); |
| } |
| return fd; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_openat0(JNIEnv* env, jclass this, jint dfd, |
| jlong pathAddress, jint oflags, jint mode) |
| { |
| jint fd; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| if (my_openat64_func == NULL) { |
| JNU_ThrowInternalError(env, "should not reach here"); |
| return -1; |
| } |
| |
| RESTARTABLE((*my_openat64_func)(dfd, path, (int)oflags, (mode_t)mode), fd); |
| if (fd == -1) { |
| throwUnixException(env, errno); |
| } |
| return fd; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_close(JNIEnv* env, jclass this, jint fd) { |
| int err; |
| /* TDB - need to decide if EIO and other errors should cause exception */ |
| RESTARTABLE(close((int)fd), err); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_read(JNIEnv* env, jclass this, jint fd, |
| jlong address, jint nbytes) |
| { |
| ssize_t n; |
| void* bufp = jlong_to_ptr(address); |
| RESTARTABLE(read((int)fd, bufp, (size_t)nbytes), n); |
| if (n == -1) { |
| throwUnixException(env, errno); |
| } |
| return (jint)n; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_write(JNIEnv* env, jclass this, jint fd, |
| jlong address, jint nbytes) |
| { |
| ssize_t n; |
| void* bufp = jlong_to_ptr(address); |
| RESTARTABLE(write((int)fd, bufp, (size_t)nbytes), n); |
| if (n == -1) { |
| throwUnixException(env, errno); |
| } |
| return (jint)n; |
| } |
| |
| /** |
| * Copy stat64 members into sun.nio.fs.UnixFileAttributes |
| */ |
| static void prepAttributes(JNIEnv* env, struct stat64* buf, jobject attrs) { |
| (*env)->SetIntField(env, attrs, attrs_st_mode, (jint)buf->st_mode); |
| (*env)->SetLongField(env, attrs, attrs_st_ino, (jlong)buf->st_ino); |
| (*env)->SetLongField(env, attrs, attrs_st_dev, (jlong)buf->st_dev); |
| (*env)->SetLongField(env, attrs, attrs_st_rdev, (jlong)buf->st_rdev); |
| (*env)->SetIntField(env, attrs, attrs_st_nlink, (jint)buf->st_nlink); |
| (*env)->SetIntField(env, attrs, attrs_st_uid, (jint)buf->st_uid); |
| (*env)->SetIntField(env, attrs, attrs_st_gid, (jint)buf->st_gid); |
| (*env)->SetLongField(env, attrs, attrs_st_size, (jlong)buf->st_size); |
| (*env)->SetLongField(env, attrs, attrs_st_atime, (jlong)buf->st_atime); |
| (*env)->SetLongField(env, attrs, attrs_st_mtime, (jlong)buf->st_mtime); |
| (*env)->SetLongField(env, attrs, attrs_st_ctime, (jlong)buf->st_ctime); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_stat0(JNIEnv* env, jclass this, |
| jlong pathAddress, jobject attrs) |
| { |
| int err; |
| struct stat64 buf; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(stat64(path, &buf), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } else { |
| prepAttributes(env, &buf, attrs); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_lstat0(JNIEnv* env, jclass this, |
| jlong pathAddress, jobject attrs) |
| { |
| int err; |
| struct stat64 buf; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(lstat64(path, &buf), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } else { |
| prepAttributes(env, &buf, attrs); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fstat(JNIEnv* env, jclass this, jint fd, |
| jobject attrs) |
| { |
| int err; |
| struct stat64 buf; |
| |
| RESTARTABLE(fstat64((int)fd, &buf), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } else { |
| prepAttributes(env, &buf, attrs); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fstatat0(JNIEnv* env, jclass this, jint dfd, |
| jlong pathAddress, jint flag, jobject attrs) |
| { |
| int err; |
| struct stat64 buf; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| if (my_fstatat64_func == NULL) { |
| JNU_ThrowInternalError(env, "should not reach here"); |
| return; |
| } |
| RESTARTABLE((*my_fstatat64_func)((int)dfd, path, &buf, (int)flag), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } else { |
| prepAttributes(env, &buf, attrs); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_chmod0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint mode) |
| { |
| int err; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(chmod(path, (mode_t)mode), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fchmod(JNIEnv* env, jclass this, jint filedes, |
| jint mode) |
| { |
| int err; |
| |
| RESTARTABLE(fchmod((int)filedes, (mode_t)mode), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_chown0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint uid, jint gid) |
| { |
| int err; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(chown(path, (uid_t)uid, (gid_t)gid), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_lchown0(JNIEnv* env, jclass this, jlong pathAddress, jint uid, jint gid) |
| { |
| int err; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(lchown(path, (uid_t)uid, (gid_t)gid), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fchown(JNIEnv* env, jclass this, jint filedes, jint uid, jint gid) |
| { |
| int err; |
| |
| RESTARTABLE(fchown(filedes, (uid_t)uid, (gid_t)gid), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_utimes0(JNIEnv* env, jclass this, |
| jlong pathAddress, jlong accessTime, jlong modificationTime) |
| { |
| int err; |
| struct timeval times[2]; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| times[0].tv_sec = accessTime / 1000000; |
| times[0].tv_usec = accessTime % 1000000; |
| |
| times[1].tv_sec = modificationTime / 1000000; |
| times[1].tv_usec = modificationTime % 1000000; |
| |
| RESTARTABLE(utimes(path, ×[0]), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_futimes(JNIEnv* env, jclass this, jint filedes, |
| jlong accessTime, jlong modificationTime) |
| { |
| struct timeval times[2]; |
| int err = 0; |
| |
| times[0].tv_sec = accessTime / 1000000; |
| times[0].tv_usec = accessTime % 1000000; |
| |
| times[1].tv_sec = modificationTime / 1000000; |
| times[1].tv_usec = modificationTime % 1000000; |
| |
| if (my_futimesat_func != NULL) { |
| RESTARTABLE((*my_futimesat_func)(filedes, NULL, ×[0]), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_opendir0(JNIEnv* env, jclass this, |
| jlong pathAddress) |
| { |
| DIR* dir; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| /* EINTR not listed as a possible error */ |
| dir = opendir(path); |
| if (dir == NULL) { |
| throwUnixException(env, errno); |
| } |
| return ptr_to_jlong(dir); |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fdopendir(JNIEnv* env, jclass this, int dfd) { |
| DIR* dir; |
| |
| if (my_fdopendir_func == NULL) { |
| JNU_ThrowInternalError(env, "should not reach here"); |
| return (jlong)-1; |
| } |
| |
| /* EINTR not listed as a possible error */ |
| dir = (*my_fdopendir_func)((int)dfd); |
| if (dir == NULL) { |
| throwUnixException(env, errno); |
| } |
| return ptr_to_jlong(dir); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_closedir(JNIEnv* env, jclass this, jlong dir) { |
| int err; |
| DIR* dirp = jlong_to_ptr(dir); |
| |
| RESTARTABLE(closedir(dirp), err); |
| if (errno == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_readdir(JNIEnv* env, jclass this, jlong value) { |
| char entry[sizeof(struct dirent64) + PATH_MAX + 1]; |
| struct dirent64* ptr = (struct dirent64*)&entry; |
| struct dirent64* result; |
| int res; |
| DIR* dirp = jlong_to_ptr(value); |
| |
| /* EINTR not listed as a possible error */ |
| /* TDB: reentrant version probably not required here */ |
| res = readdir64_r(dirp, ptr, &result); |
| if (res != 0) { |
| throwUnixException(env, res); |
| return NULL; |
| } else { |
| if (result == NULL) { |
| return NULL; |
| } else { |
| jsize len = strlen(ptr->d_name); |
| jbyteArray bytes = (*env)->NewByteArray(env, len); |
| if (bytes != NULL) { |
| (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)(ptr->d_name)); |
| } |
| return bytes; |
| } |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_mkdir0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint mode) |
| { |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| /* EINTR not listed as a possible error */ |
| if (mkdir(path, (mode_t)mode) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_rmdir0(JNIEnv* env, jclass this, |
| jlong pathAddress) |
| { |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| /* EINTR not listed as a possible error */ |
| if (rmdir(path) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_link0(JNIEnv* env, jclass this, |
| jlong existingAddress, jlong newAddress) |
| { |
| int err; |
| const char* existing = (const char*)jlong_to_ptr(existingAddress); |
| const char* newname = (const char*)jlong_to_ptr(newAddress); |
| |
| RESTARTABLE(link(existing, newname), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_unlink0(JNIEnv* env, jclass this, |
| jlong pathAddress) |
| { |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| /* EINTR not listed as a possible error */ |
| if (unlink(path) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_unlinkat0(JNIEnv* env, jclass this, jint dfd, |
| jlong pathAddress, jint flags) |
| { |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| if (my_unlinkat_func == NULL) { |
| JNU_ThrowInternalError(env, "should not reach here"); |
| return; |
| } |
| |
| /* EINTR not listed as a possible error */ |
| if ((*my_unlinkat_func)((int)dfd, path, (int)flags) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_rename0(JNIEnv* env, jclass this, |
| jlong fromAddress, jlong toAddress) |
| { |
| const char* from = (const char*)jlong_to_ptr(fromAddress); |
| const char* to = (const char*)jlong_to_ptr(toAddress); |
| |
| /* EINTR not listed as a possible error */ |
| if (rename(from, to) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_renameat0(JNIEnv* env, jclass this, |
| jint fromfd, jlong fromAddress, jint tofd, jlong toAddress) |
| { |
| const char* from = (const char*)jlong_to_ptr(fromAddress); |
| const char* to = (const char*)jlong_to_ptr(toAddress); |
| |
| if (my_renameat_func == NULL) { |
| JNU_ThrowInternalError(env, "should not reach here"); |
| return; |
| } |
| |
| /* EINTR not listed as a possible error */ |
| if ((*my_renameat_func)((int)fromfd, from, (int)tofd, to) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_symlink0(JNIEnv* env, jclass this, |
| jlong targetAddress, jlong linkAddress) |
| { |
| const char* target = (const char*)jlong_to_ptr(targetAddress); |
| const char* link = (const char*)jlong_to_ptr(linkAddress); |
| |
| /* EINTR not listed as a possible error */ |
| if (symlink(target, link) == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_readlink0(JNIEnv* env, jclass this, |
| jlong pathAddress) |
| { |
| jbyteArray result = NULL; |
| char target[PATH_MAX+1]; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| /* EINTR not listed as a possible error */ |
| int n = readlink(path, target, sizeof(target)); |
| if (n == -1) { |
| throwUnixException(env, errno); |
| } else { |
| jsize len; |
| if (n == sizeof(target)) { |
| n--; |
| } |
| target[n] = '\0'; |
| len = (jsize)strlen(target); |
| result = (*env)->NewByteArray(env, len); |
| if (result != NULL) { |
| (*env)->SetByteArrayRegion(env, result, 0, len, (jbyte*)target); |
| } |
| } |
| return result; |
| } |
| |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_realpath0(JNIEnv* env, jclass this, |
| jlong pathAddress) |
| { |
| jbyteArray result = NULL; |
| char resolved[PATH_MAX+1]; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| /* EINTR not listed as a possible error */ |
| if (realpath(path, resolved) == NULL) { |
| throwUnixException(env, errno); |
| } else { |
| jsize len = (jsize)strlen(resolved); |
| result = (*env)->NewByteArray(env, len); |
| if (result != NULL) { |
| (*env)->SetByteArrayRegion(env, result, 0, len, (jbyte*)resolved); |
| } |
| } |
| return result; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_access0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint amode) |
| { |
| int err; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(access(path, (int)amode), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_statvfs0(JNIEnv* env, jclass this, |
| jlong pathAddress, jobject attrs) |
| { |
| int err; |
| struct statvfs64 buf; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| |
| RESTARTABLE(statvfs64(path, &buf), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } else { |
| (*env)->SetLongField(env, attrs, attrs_f_frsize, long_to_jlong(buf.f_frsize)); |
| (*env)->SetLongField(env, attrs, attrs_f_blocks, long_to_jlong(buf.f_blocks)); |
| (*env)->SetLongField(env, attrs, attrs_f_bfree, long_to_jlong(buf.f_bfree)); |
| (*env)->SetLongField(env, attrs, attrs_f_bavail, long_to_jlong(buf.f_bavail)); |
| } |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_pathconf0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint name) |
| { |
| long err; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| err = pathconf(path, (int)name); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| return (jlong)err; |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_fpathconf(JNIEnv* env, jclass this, |
| jint fd, jint name) |
| { |
| long err; |
| |
| err = fpathconf((int)fd, (int)name); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| return (jlong)err; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_mknod0(JNIEnv* env, jclass this, |
| jlong pathAddress, jint mode, jlong dev) |
| { |
| int err; |
| const char* path = (const char*)jlong_to_ptr(pathAddress); |
| |
| RESTARTABLE(mknod(path, (mode_t)mode, (dev_t)dev), err); |
| if (err == -1) { |
| throwUnixException(env, errno); |
| } |
| } |
| |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_getpwuid(JNIEnv* env, jclass this, jint uid) |
| { |
| jbyteArray result = NULL; |
| int buflen; |
| char* pwbuf; |
| |
| /* allocate buffer for password record */ |
| buflen = (int)sysconf(_SC_GETPW_R_SIZE_MAX); |
| if (buflen == -1) |
| buflen = ENT_BUF_SIZE; |
| pwbuf = (char*)malloc(buflen); |
| if (pwbuf == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "native heap"); |
| } else { |
| struct passwd pwent; |
| struct passwd* p = NULL; |
| int res = 0; |
| |
| errno = 0; |
| #ifdef __solaris__ |
| RESTARTABLE_RETURN_PTR(getpwuid_r((uid_t)uid, &pwent, pwbuf, (size_t)buflen), p); |
| #else |
| RESTARTABLE(getpwuid_r((uid_t)uid, &pwent, pwbuf, (size_t)buflen, &p), res); |
| #endif |
| |
| if (res != 0 || p == NULL || p->pw_name == NULL || *(p->pw_name) == '\0') { |
| /* not found or error */ |
| if (errno != 0 && errno != ENOENT) |
| throwUnixException(env, errno); |
| } else { |
| jsize len = strlen(p->pw_name); |
| result = (*env)->NewByteArray(env, len); |
| if (result != NULL) { |
| (*env)->SetByteArrayRegion(env, result, 0, len, (jbyte*)(p->pw_name)); |
| } |
| } |
| free(pwbuf); |
| } |
| |
| return result; |
| } |
| |
| |
| JNIEXPORT jbyteArray JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_getgrgid(JNIEnv* env, jclass this, jint gid) |
| { |
| jbyteArray result = NULL; |
| int buflen; |
| int retry; |
| |
| /* initial size of buffer for group record */ |
| buflen = (int)sysconf(_SC_GETGR_R_SIZE_MAX); |
| if (buflen == -1) |
| buflen = ENT_BUF_SIZE; |
| |
| do { |
| struct group grent; |
| struct group* g = NULL; |
| int res = 0; |
| |
| char* grbuf = (char*)malloc(buflen); |
| if (grbuf == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "native heap"); |
| return NULL; |
| } |
| |
| errno = 0; |
| #ifdef __solaris__ |
| RESTARTABLE_RETURN_PTR(getgrgid_r((gid_t)gid, &grent, grbuf, (size_t)buflen), g); |
| #else |
| RESTARTABLE(getgrgid_r((gid_t)gid, &grent, grbuf, (size_t)buflen, &g), res); |
| #endif |
| |
| retry = 0; |
| if (res != 0 || g == NULL || g->gr_name == NULL || *(g->gr_name) == '\0') { |
| /* not found or error */ |
| if (errno != 0 && errno != ENOENT) { |
| if (errno == ERANGE) { |
| /* insufficient buffer size so need larger buffer */ |
| buflen += ENT_BUF_SIZE; |
| retry = 1; |
| } else { |
| throwUnixException(env, errno); |
| } |
| } |
| } else { |
| jsize len = strlen(g->gr_name); |
| result = (*env)->NewByteArray(env, len); |
| if (result != NULL) { |
| (*env)->SetByteArrayRegion(env, result, 0, len, (jbyte*)(g->gr_name)); |
| } |
| } |
| |
| free(grbuf); |
| |
| } while (retry); |
| |
| return result; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_getpwnam0(JNIEnv* env, jclass this, |
| jlong nameAddress) |
| { |
| jint uid = -1; |
| int buflen; |
| char* pwbuf; |
| |
| /* allocate buffer for password record */ |
| buflen = (int)sysconf(_SC_GETPW_R_SIZE_MAX); |
| if (buflen == -1) |
| buflen = ENT_BUF_SIZE; |
| pwbuf = (char*)malloc(buflen); |
| if (pwbuf == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "native heap"); |
| } else { |
| struct passwd pwent; |
| struct passwd* p = NULL; |
| int res = 0; |
| const char* name = (const char*)jlong_to_ptr(nameAddress); |
| |
| errno = 0; |
| #ifdef __solaris__ |
| RESTARTABLE_RETURN_PTR(getpwnam_r(name, &pwent, pwbuf, (size_t)buflen), p); |
| #else |
| RESTARTABLE(getpwnam_r(name, &pwent, pwbuf, (size_t)buflen, &p), res); |
| #endif |
| |
| if (res != 0 || p == NULL || p->pw_name == NULL || *(p->pw_name) == '\0') { |
| /* not found or error */ |
| if (errno != 0 && errno != ENOENT) |
| throwUnixException(env, errno); |
| } else { |
| uid = p->pw_uid; |
| } |
| free(pwbuf); |
| } |
| |
| return uid; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_getgrnam0(JNIEnv* env, jclass this, |
| jlong nameAddress) |
| { |
| jint gid = -1; |
| int buflen, retry; |
| |
| /* initial size of buffer for group record */ |
| buflen = (int)sysconf(_SC_GETGR_R_SIZE_MAX); |
| if (buflen == -1) |
| buflen = ENT_BUF_SIZE; |
| |
| do { |
| struct group grent; |
| struct group* g = NULL; |
| int res = 0; |
| char *grbuf; |
| const char* name = (const char*)jlong_to_ptr(nameAddress); |
| |
| grbuf = (char*)malloc(buflen); |
| if (grbuf == NULL) { |
| JNU_ThrowOutOfMemoryError(env, "native heap"); |
| return -1; |
| } |
| |
| errno = 0; |
| #ifdef __solaris__ |
| RESTARTABLE_RETURN_PTR(getgrnam_r(name, &grent, grbuf, (size_t)buflen), g); |
| #else |
| RESTARTABLE(getgrnam_r(name, &grent, grbuf, (size_t)buflen, &g), res); |
| #endif |
| |
| retry = 0; |
| if (res != 0 || g == NULL || g->gr_name == NULL || *(g->gr_name) == '\0') { |
| /* not found or error */ |
| if (errno != 0 && errno != ENOENT) { |
| if (errno == ERANGE) { |
| /* insufficient buffer size so need larger buffer */ |
| buflen += ENT_BUF_SIZE; |
| retry = 1; |
| } else { |
| throwUnixException(env, errno); |
| } |
| } |
| } else { |
| gid = g->gr_gid; |
| } |
| |
| free(grbuf); |
| |
| } while (retry); |
| |
| return gid; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_fs_UnixNativeDispatcher_getextmntent(JNIEnv* env, jclass this, |
| jlong value, jobject entry) |
| { |
| #ifdef __solaris__ |
| struct extmnttab ent; |
| #else |
| struct mntent ent; |
| char buf[1024]; |
| int buflen = sizeof(buf); |
| struct mntent* m; |
| #endif |
| FILE* fp = jlong_to_ptr(value); |
| jsize len; |
| jbyteArray bytes; |
| char* name; |
| char* dir; |
| char* fstype; |
| char* options; |
| dev_t dev; |
| |
| #ifdef __solaris__ |
| if (getextmntent(fp, &ent, 0)) |
| return -1; |
| name = ent.mnt_special; |
| dir = ent.mnt_mountp; |
| fstype = ent.mnt_fstype; |
| options = ent.mnt_mntopts; |
| dev = makedev(ent.mnt_major, ent.mnt_minor); |
| if (dev == NODEV) { |
| /* possible bug on Solaris 8 and 9 */ |
| throwUnixException(env, errno); |
| return -1; |
| } |
| #else |
| m = getmntent_r(fp, &ent, (char*)&buf, buflen); |
| if (m == NULL) |
| return -1; |
| name = m->mnt_fsname; |
| dir = m->mnt_dir; |
| fstype = m->mnt_type; |
| options = m->mnt_opts; |
| dev = 0; |
| #endif |
| |
| len = strlen(name); |
| bytes = (*env)->NewByteArray(env, len); |
| if (bytes == NULL) |
| return -1; |
| (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)name); |
| (*env)->SetObjectField(env, entry, entry_name, bytes); |
| |
| len = strlen(dir); |
| bytes = (*env)->NewByteArray(env, len); |
| if (bytes == NULL) |
| return -1; |
| (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)dir); |
| (*env)->SetObjectField(env, entry, entry_dir, bytes); |
| |
| len = strlen(fstype); |
| bytes = (*env)->NewByteArray(env, len); |
| if (bytes == NULL) |
| return -1; |
| (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)fstype); |
| (*env)->SetObjectField(env, entry, entry_fstype, bytes); |
| |
| len = strlen(options); |
| bytes = (*env)->NewByteArray(env, len); |
| if (bytes == NULL) |
| return -1; |
| (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte*)options); |
| (*env)->SetObjectField(env, entry, entry_options, bytes); |
| |
| if (dev != 0) |
| (*env)->SetLongField(env, entry, entry_dev, (jlong)dev); |
| |
| return 0; |
| } |