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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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).
*
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package com.oracle.svm.core.posix;
import org.graalvm.nativeimage.StackValue;
import org.graalvm.nativeimage.c.type.CCharPointer;
import org.graalvm.nativeimage.c.type.CTypeConversion;
import org.graalvm.word.WordFactory;
import com.oracle.svm.core.jdk.SystemPropertiesSupport;
import com.oracle.svm.core.posix.headers.Limits;
import com.oracle.svm.core.posix.headers.Pwd;
import com.oracle.svm.core.posix.headers.Unistd;
public abstract class PosixSystemPropertiesSupport extends SystemPropertiesSupport {
/*
* Initialization code is adapted from the JDK native code that initializes the system
* properties, as found in src/solaris/native/java/lang/java_props_md.c
*/
@Override
protected String userNameValue() {
Pwd.passwd pwent = Pwd.getpwuid(Unistd.getuid());
return pwent.isNull() ? "?" : CTypeConversion.toJavaString(pwent.pw_name());
}
@Override
protected String userHomeValue() {
Pwd.passwd pwent = Pwd.getpwuid(Unistd.getuid());
return pwent.isNull() ? "?" : CTypeConversion.toJavaString(pwent.pw_dir());
}
@Override
protected String userDirValue() {
int bufSize = Limits.MAXPATHLEN();
CCharPointer buf = StackValue.get(bufSize);
if (Unistd.getcwd(buf, WordFactory.unsigned(bufSize)).isNonNull()) {
return CTypeConversion.toJavaString(buf);
} else {
throw new java.lang.Error("Properties init: Could not determine current working directory.");
}
}
}