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133 lines
2.5 KiB
C++
133 lines
2.5 KiB
C++
// natFileDescriptor.cc - Native part of FileDescriptor class.
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/* Copyright (C) 1998, 1999 Red Hat, Inc.
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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#include <config.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <gcj/cni.h>
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#include <jvm.h>
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#include <java/io/FileDescriptor.h>
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#include <java/io/SyncFailedException.h>
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#include <java/io/IOException.h>
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#include <java/io/EOFException.h>
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#include <java/lang/ArrayIndexOutOfBoundsException.h>
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#include <java/lang/NullPointerException.h>
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#include <java/lang/String.h>
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#include <java/io/FileNotFoundException.h>
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extern "C" void diag_write_char (char c);
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static void
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diag_write (char *data, int len)
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{
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while (len > 0)
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{
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diag_write_char (*data++);
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len--;
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}
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}
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#define NO_FSYNC_MESSAGE "sync unsupported"
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jboolean
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java::io::FileDescriptor::valid (void)
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{
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return true;
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}
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void
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java::io::FileDescriptor::sync (void)
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{
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// Some files don't support fsync. We don't bother reporting these
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// as errors.
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#ifdef HAVE_FSYNC
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#else
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JvThrow (new SyncFailedException (JvNewStringLatin1 (NO_FSYNC_MESSAGE)));
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#endif
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}
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jint
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java::io::FileDescriptor::open (jstring path, jint jflags)
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{
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return fd;
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}
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void
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java::io::FileDescriptor::write (jint b)
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{
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char d = (char) b;
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::diag_write (&d, 1);
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}
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void
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java::io::FileDescriptor::write (jbyteArray b, jint offset, jint len)
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{
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if (! b)
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JvThrow (new java::lang::NullPointerException);
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if (offset < 0 || len < 0 || offset + len > JvGetArrayLength (b))
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JvThrow (new java::lang::ArrayIndexOutOfBoundsException);
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char *bytes = (char *)elements (b) + offset;
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::diag_write (bytes, len);
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}
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void
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java::io::FileDescriptor::close (void)
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{
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}
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jint
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java::io::FileDescriptor::seek (jlong pos, jint whence)
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{
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JvAssert (whence == SET || whence == CUR);
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jlong len = length ();
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jlong here = getFilePointer ();
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if ((whence == SET && pos > len) || (whence == CUR && here + pos > len))
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JvThrow (new EOFException);
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return 0;
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}
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jlong
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java::io::FileDescriptor::length (void)
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{
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return 0;
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}
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jlong
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java::io::FileDescriptor::getFilePointer (void)
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{
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return 0;
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}
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jint
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java::io::FileDescriptor::read (void)
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{
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return 0;
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}
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jint
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java::io::FileDescriptor::read (jbyteArray buffer, jint offset, jint count)
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{
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return 0;
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}
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jint
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java::io::FileDescriptor::available (void)
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{
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return 0;
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}
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