7113349: Initial changeset for Macosx port to jdk
Reviewed-by: jjh, alanb, dholmes, anthony, ohrstrom, ksrini, jrose, weijun, smarks
Contributed-by: Alan Bateman <alan.bateman@oracle.com>, Alexander Potochkin <alexander.potochkin@oracle.com>, Alexander Zuev <alexander.zuev@oracle.com>, Andrew Brygin <andrew.brygin@oracle.com>, Artem Ananiev <artem.ananiev@oracle.com>, Alex Strange <astrange@apple.com>, Bino George <bino@apple.com>, Christine Lu <christine.lu@oracle.com>, David Katleman <david.katleman@oracle.com>, David Durrence <david_durrence@apple.com>, Dmitry Cherepanov <dmitry.cherepanov@oracle.com>, Greg Lewis <glewis@eyesbeyond.com>, Kevin Miller <kevin_m_miller@apple.com>, Kurt Miller <kurt@intricatesoftware.com>, Landon Fuller <landonf@plausiblelabs.com>, Leonid Romanov <leonid.romanov@oracle.com>, Loefty Walkowiak <loefty@apple.com>, Mark Reinhold <mark.reinhold@oracle.com>, Naoto Sato <naoto.sato@oracle.com>, Philip Race <philip.race@oracle.com>, Roger Hoover <rhoover@apple.com>, Scott Kovatch <scott.kovatch@oracle.com>, Sergey ByloKhov <sergey.bylokhov@oracle.com>, Mike Swingler <swingler@apple.com>, Tomas Hurka <tomas.hurka@oracle.com>
/*
* Copyright (c) 2001, 2004, 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.
*/
/*
* Solaris/Linux platform specific code to support the Prefs API.
*/
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <utime.h>
#include "jni_util.h"
JNIEXPORT jint JNICALL
Java_java_util_prefs_FileSystemPreferences_chmod(JNIEnv *env,
jclass thisclass, jstring java_fname, jint permission) {
const char *fname = JNU_GetStringPlatformChars(env, java_fname, JNI_FALSE);
int result;
result = chmod(fname, permission);
if (result != 0)
result = errno;
JNU_ReleaseStringPlatformChars(env, java_fname, fname);
return (jint) result;
}
#if defined(_ALLBSD_SOURCE)
typedef struct flock FLOCK;
#else
typedef struct flock64 FLOCK;
#endif
/**
* Try to open a named lock file.
* The result is a cookie that can be used later to unlock the file.
* On failure the result is zero.
*/
JNIEXPORT jintArray JNICALL
Java_java_util_prefs_FileSystemPreferences_lockFile0(JNIEnv *env,
jclass thisclass, jstring java_fname, jint permission, jboolean shared) {
const char *fname = JNU_GetStringPlatformChars(env, java_fname, JNI_FALSE);
int fd, rc;
int result[2];
jintArray javaResult;
int old_umask;
FLOCK fl;
fl.l_whence = SEEK_SET;
fl.l_len = 0;
fl.l_start = 0;
if (shared == JNI_TRUE) {
fl.l_type = F_RDLCK;
} else {
fl.l_type = F_WRLCK;
}
if (shared == JNI_TRUE) {
fd = open(fname, O_RDONLY, 0);
} else {
old_umask = umask(0);
fd = open(fname, O_WRONLY|O_CREAT, permission);
result[1] = errno;
umask(old_umask);
}
if (fd < 0) {
result[0] = 0;
} else {
#if defined(_ALLBSD_SOURCE)
rc = fcntl(fd, F_SETLK, &fl);
#else
rc = fcntl(fd, F_SETLK64, &fl);
#endif
result[1] = errno;
if (rc < 0) {
result[0]= 0;
close(fd);
} else {
result[0] = fd;
}
}
JNU_ReleaseStringPlatformChars(env, java_fname, fname);
javaResult = (*env)->NewIntArray(env,2);
(*env)->SetIntArrayRegion(env, javaResult, 0, 2, result);
return javaResult;
}
/**
* Try to unlock a lock file, using a cookie returned by lockFile.
*/
JNIEXPORT jint JNICALL
Java_java_util_prefs_FileSystemPreferences_unlockFile0(JNIEnv *env,
jclass thisclass, jint fd) {
int rc;
FLOCK fl;
fl.l_whence = SEEK_SET;
fl.l_len = 0;
fl.l_start = 0;
fl.l_type = F_UNLCK;
#if defined(_ALLBSD_SOURCE)
rc = fcntl(fd, F_SETLK, &fl);
#else
rc = fcntl(fd, F_SETLK64, &fl);
#endif
if (rc < 0) {
close(fd);
return (jint)errno;
}
rc = close(fd);
if (rc < 0) {
return (jint) errno;
}
return 0;
}