/*
* Copyright (c) 2001, 2010, 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 "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include "io_util.h"
#include "io_util_md.h"
#include <string.h>
#ifdef MACOSX
#include <CoreFoundation/CoreFoundation.h>
__private_extern__
jstring newStringPlatform(JNIEnv *env, const char* str)
{
jstring rv = NULL;
CFMutableStringRef csref = CFStringCreateMutable(NULL, 0);
if (csref == NULL) {
JNU_ThrowOutOfMemoryError(env, "native heap");
} else {
CFStringAppendCString(csref, str, kCFStringEncodingUTF8);
CFStringNormalize(csref, kCFStringNormalizationFormC);
int clen = CFStringGetLength(csref);
int ulen = (clen + 1) * 2; // utf16 + zero padding
char* chars = malloc(ulen);
if (chars == NULL) {
CFRelease(csref);
JNU_ThrowOutOfMemoryError(env, "native heap");
} else {
if (CFStringGetCString(csref, chars, ulen, kCFStringEncodingUTF16)) {
rv = (*env)->NewString(env, (jchar*)chars, clen);
}
free(chars);
CFRelease(csref);
}
}
return rv;
}
#endif
void
fileOpen(JNIEnv *env, jobject this, jstring path, jfieldID fid, int flags)
{
WITH_PLATFORM_STRING(env, path, ps) {
FD fd;
#if defined(__linux__) || defined(_ALLBSD_SOURCE)
/* Remove trailing slashes, since the kernel won't */
char *p = (char *)ps + strlen(ps) - 1;
while ((p > ps) && (*p == '/'))
*p-- = '\0';
#endif
fd = JVM_Open(ps, flags, 0666);
if (fd >= 0) {
SET_FD(this, fd, fid);
} else {
throwFileNotFoundException(env, path);
}
} END_PLATFORM_STRING(env, ps);
}
void
fileClose(JNIEnv *env, jobject this, jfieldID fid)
{
FD fd = GET_FD(this, fid);
if (fd == -1) {
return;
}
/* Set the fd to -1 before closing it so that the timing window
* of other threads using the wrong fd (closed but recycled fd,
* that gets re-opened with some other filename) is reduced.
* Practically the chance of its occurance is low, however, we are
* taking extra precaution over here.
*/
SET_FD(this, -1, fid);
/*
* Don't close file descriptors 0, 1, or 2. If we close these stream
* then a subsequent file open or socket will use them. Instead we
* just redirect these file descriptors to /dev/null.
*/
if (fd >= STDIN_FILENO && fd <= STDERR_FILENO) {
int devnull = open("/dev/null", O_WRONLY);
if (devnull < 0) {
SET_FD(this, fd, fid); // restore fd
JNU_ThrowIOExceptionWithLastError(env, "open /dev/null failed");
} else {
dup2(devnull, fd);
close(devnull);
}
} else if (JVM_Close(fd) == -1) {
JNU_ThrowIOExceptionWithLastError(env, "close failed");
}
}