+++ /dev/null
-// natFileDescriptor.cc - Native part of FileDescriptor class.
-
-/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-#include <config.h>
-
-#include "posix.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/param.h>
-
-#ifdef HAVE_SYS_IOCTL_H
-#define BSD_COMP /* Get FIONREAD on Solaris2. */
-#include <sys/ioctl.h>
-#endif
-
-// Pick up FIONREAD on Solaris 2.5.
-#ifdef HAVE_SYS_FILIO_H
-#include <sys/filio.h>
-#endif
-
-#include <gcj/cni.h>
-#include <jvm.h>
-#include <java/io/FileDescriptor.h>
-#include <java/io/SyncFailedException.h>
-#include <java/io/IOException.h>
-#include <java/io/InterruptedIOException.h>
-#include <java/io/EOFException.h>
-#include <java/lang/ArrayIndexOutOfBoundsException.h>
-#include <java/lang/NullPointerException.h>
-#include <java/lang/System.h>
-#include <java/lang/String.h>
-#include <java/lang/Thread.h>
-#include <java/io/FileNotFoundException.h>
-
-#define NO_FSYNC_MESSAGE "sync unsupported"
-
-void
-java::io::FileDescriptor::init(void)
-{
- in = new java::io::FileDescriptor(0);
- out = new java::io::FileDescriptor(1);
- err = new java::io::FileDescriptor(2);
-}
-
-jboolean
-java::io::FileDescriptor::valid (void)
-{
- struct stat sb;
- return ::fstat (fd, &sb) == 0;
-}
-
-void
-java::io::FileDescriptor::sync (void)
-{
- // Some files don't support fsync. We don't bother reporting these
- // as errors.
-#ifdef HAVE_FSYNC
- if (::fsync (fd) && errno != EROFS && errno != EINVAL)
- throw new SyncFailedException (JvNewStringLatin1 (strerror (errno)));
-#else
- throw new SyncFailedException (JvNewStringLatin1 (NO_FSYNC_MESSAGE));
-#endif
-}
-
-jint
-java::io::FileDescriptor::open (jstring path, jint jflags)
-{
- char *buf = (char *) _Jv_AllocBytes (_Jv_GetStringUTFLength (path) + 1);
- jsize total = JvGetStringUTFRegion (path, 0, path->length(), buf);
- buf[total] = '\0';
- int flags = 0;
-#ifdef O_BINARY
- flags |= O_BINARY;
-#endif
-
- JvAssert ((jflags & READ) || (jflags & WRITE));
- int mode = 0666;
- if ((jflags & READ) && (jflags & WRITE))
- flags |= O_RDWR | O_CREAT;
- else if ((jflags & READ))
- flags |= O_RDONLY;
- else
- {
- flags |= O_WRONLY | O_CREAT;
- if ((jflags & APPEND))
- flags |= O_APPEND;
- else
- flags |= O_TRUNC;
-
- if ((jflags & EXCL))
- {
- flags |= O_EXCL;
- // In this case we are making a temp file.
- mode = 0600;
- }
- }
-
- int fd = ::open (buf, flags, mode);
- if (fd == -1 && errno == EMFILE)
- {
- // Because finalize () calls close () we might be able to continue.
- java::lang::System::gc ();
- java::lang::System::runFinalization ();
- fd = ::open (buf, flags, mode);
- }
- if (fd == -1)
- {
- char msg[MAXPATHLEN + 200];
- // We choose the formatting here for JDK compatibility, believe
- // it or not.
- sprintf (msg, "%s (%s)", buf, strerror (errno));
- throw new FileNotFoundException (JvNewStringLatin1 (msg));
- }
-
- _Jv_platform_close_on_exec (fd);
-
- return fd;
-}
-
-void
-java::io::FileDescriptor::write (jint b)
-{
- jbyte d = (jbyte) b;
- int r = 0;
- while (r != 1)
- {
- r = ::write (fd, &d, 1);
- if (r == -1)
- {
- if (java::lang::Thread::interrupted())
- {
- InterruptedIOException *iioe
- = new InterruptedIOException (JvNewStringLatin1 (strerror (errno)));
- iioe->bytesTransferred = r == -1 ? 0 : r;
- throw iioe;
- }
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- }
- }
-}
-
-void
-java::io::FileDescriptor::write (jbyteArray b, jint offset, jint len)
-{
- if (! b)
- throw new java::lang::NullPointerException;
- if (offset < 0 || len < 0 || offset + len > JvGetArrayLength (b))
- throw new java::lang::ArrayIndexOutOfBoundsException;
- jbyte *bytes = elements (b) + offset;
-
- int written = 0;
- while (len > 0)
- {
- int r = ::write (fd, bytes, len);
- if (r == -1)
- {
- if (java::lang::Thread::interrupted())
- {
- InterruptedIOException *iioe
- = new InterruptedIOException (JvNewStringLatin1 (strerror (errno)));
- iioe->bytesTransferred = written;
- throw iioe;
- }
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- }
-
- written += r;
- len -= r;
- bytes += r;
- }
-}
-
-void
-java::io::FileDescriptor::close (void)
-{
- jint save = fd;
- fd = -1;
- if (::close (save))
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
-}
-
-jint
-java::io::FileDescriptor::seek (jlong pos, jint whence, jboolean eof_trunc)
-{
- JvAssert (whence == SET || whence == CUR);
-
- jlong len = length ();
- jlong here = getFilePointer ();
-
- if (eof_trunc
- && ((whence == SET && pos > len) || (whence == CUR && here + pos > len)))
- {
- whence = SET;
- pos = len;
- }
-
- off_t r = ::lseek (fd, (off_t) pos, whence == SET ? SEEK_SET : SEEK_CUR);
- if (r == -1)
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- return r;
-}
-
-jlong
-java::io::FileDescriptor::length (void)
-{
- struct stat sb;
- if (::fstat (fd, &sb))
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- return sb.st_size;
-}
-
-jlong
-java::io::FileDescriptor::getFilePointer (void)
-{
- off_t r = ::lseek (fd, 0, SEEK_CUR);
- if (r == -1)
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- return r;
-}
-
-jint
-java::io::FileDescriptor::read (void)
-{
- jbyte b;
- int r = ::read (fd, &b, 1);
- if (r == 0)
- return -1;
- if (r == -1)
- {
- if (java::lang::Thread::interrupted())
- {
- InterruptedIOException *iioe
- = new InterruptedIOException (JvNewStringLatin1 (strerror (errno)));
- iioe->bytesTransferred = r == -1 ? 0 : r;
- throw iioe;
- }
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- }
- return b & 0xFF;
-}
-
-jint
-java::io::FileDescriptor::read (jbyteArray buffer, jint offset, jint count)
-{
- if (! buffer)
- throw new java::lang::NullPointerException;
- jsize bsize = JvGetArrayLength (buffer);
- if (offset < 0 || count < 0 || offset + count > bsize)
- throw new java::lang::ArrayIndexOutOfBoundsException;
- jbyte *bytes = elements (buffer) + offset;
- int r = ::read (fd, bytes, count);
- if (r == 0)
- return -1;
- if (r == -1)
- {
- if (java::lang::Thread::interrupted())
- {
- InterruptedIOException *iioe
- = new InterruptedIOException (JvNewStringLatin1 (strerror (errno)));
- iioe->bytesTransferred = r == -1 ? 0 : r;
- throw iioe;
- }
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- }
- return r;
-}
-
-jint
-java::io::FileDescriptor::available (void)
-{
-#if defined (FIONREAD) || defined (HAVE_SELECT) || defined (HAVE_FSTAT)
- long num = 0;
- int r = 0;
- bool num_set = false;
-
-#if defined (FIONREAD)
- r = ::ioctl (fd, FIONREAD, &num);
- if (r == -1 && errno == ENOTTY)
- {
- // If the ioctl doesn't work, we don't care.
- r = 0;
- num = 0;
- }
- else
- num_set = true;
-#elif defined (HAVE_SELECT)
- if (fd < 0)
- {
- errno = EBADF;
- r = -1;
- }
-#endif
-
- if (r == -1)
- {
- posix_error:
- throw new IOException (JvNewStringLatin1 (strerror (errno)));
- }
-
- // If we didn't get anything, and we have fstat, then see if see if
- // we're reading a regular file. On many systems, FIONREAD does not
- // work on regular files; select() likewise returns a useless
- // result. This is run incorrectly when FIONREAD does work on
- // regular files and we are at the end of the file. However, this
- // case probably isn't very important.
-#if defined (HAVE_FSTAT)
- if (! num_set)
- {
- struct stat sb;
- off_t where = 0;
- if (fstat (fd, &sb) != -1
- && S_ISREG (sb.st_mode)
- && (where = lseek (fd, SEEK_CUR, 0)) != (off_t) -1)
- {
- num = (long) (sb.st_size - where);
- num_set = true;
- }
- }
-#endif /* HAVE_FSTAT */
-
-#if defined (HAVE_SELECT)
- if (! num_set)
- {
- fd_set rd;
- FD_ZERO (&rd);
- FD_SET (fd, &rd);
- struct timeval tv;
- tv.tv_sec = 0;
- tv.tv_usec = 0;
- r = _Jv_select (fd + 1, &rd, NULL, NULL, &tv);
- if (r == -1)
- goto posix_error;
- num = r == 0 ? 0 : 1;
- }
-#endif /* HAVE_SELECT */
-
- return (jint) num;
-#else
- throw new IOException (JvNewStringLatin1 ("unimplemented"));
-#endif
-}
projects / msp430-gcc.git / blobdiff