Tarball conversion

1 files changed, 1547 insertions, 0 deletions

diff --git a/src/file_io.c b/src/file_io.c
new file mode 100644
index 0000000..44f1b5a
--- /dev/null
+++ b/src/file_io.c
@@ -0,0 +1,1547 @@
+/*
+** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+** Copyright (C) 2003 Ross Bencina <rbencina@iprimus.com.au>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU Lesser General Public License as published by
+** the Free Software Foundation; either version 2.1 of the License, or
+** (at your option) any later version.
+**
+** This program 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 Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+/*
+**	The file is split into three sections as follows:
+**		- The top section (USE_WINDOWS_API == 0) for Linux, Unix and MacOSX
+**			systems (including Cygwin).
+**		- The middle section (USE_WINDOWS_API == 1) for microsoft windows
+**			(including MinGW) using the native windows API.
+**		- A legacy windows section which attempted to work around grevious
+**			bugs in microsoft's POSIX implementation.
+*/
+
+/*
+**	The header file sfconfig.h MUST be included before the others to ensure
+**	that large file support is enabled correctly on Unix systems.
+*/
+
+#include "sfconfig.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if (HAVE_DECL_S_IRGRP == 0)
+#include <sf_unistd.h>
+#endif
+
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+#include "sndfile.h"
+#include "common.h"
+
+#define	SENSIBLE_SIZE	(0x40000000)
+
+/*
+**	Neat solution to the Win32/OS2 binary file flage requirement.
+**	If O_BINARY isn't already defined by the inclusion of the system
+**	headers, set it to zero.
+*/
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+static void psf_log_syserr (SF_PRIVATE *psf, int error) ;
+
+#if (USE_WINDOWS_API == 0)
+
+/*------------------------------------------------------------------------------
+** Win32 stuff at the bottom of the file. Unix and other sensible OSes here.
+*/
+
+static int psf_close_fd (int fd) ;
+static int psf_open_fd (PSF_FILE * pfile) ;
+static sf_count_t psf_get_filelen_fd (int fd) ;
+
+int
+psf_fopen (SF_PRIVATE *psf)
+{
+	psf->error = 0 ;
+	psf->file.filedes = psf_open_fd (&psf->file) ;
+
+	if (psf->file.filedes == - SFE_BAD_OPEN_MODE)
+	{	psf->error = SFE_BAD_OPEN_MODE ;
+		psf->file.filedes = -1 ;
+		return psf->error ;
+		} ;
+
+	if (psf->file.filedes == -1)
+		psf_log_syserr (psf, errno) ;
+
+	return psf->error ;
+} /* psf_fopen */
+
+int
+psf_fclose (SF_PRIVATE *psf)
+{	int retval ;
+
+	if (psf->virtual_io)
+		return 0 ;
+
+	if (psf->file.do_not_close_descriptor)
+	{	psf->file.filedes = -1 ;
+		return 0 ;
+		} ;
+
+	if ((retval = psf_close_fd (psf->file.filedes)) == -1)
+		psf_log_syserr (psf, errno) ;
+
+	psf->file.filedes = -1 ;
+
+	return retval ;
+} /* psf_fclose */
+
+int
+psf_open_rsrc (SF_PRIVATE *psf)
+{
+	if (psf->rsrc.filedes > 0)
+		return 0 ;
+
+	/* Test for MacOSX style resource fork on HPFS or HPFS+ filesystems. */
+	snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s/rsrc", psf->file.path.c) ;
+	psf->error = SFE_NO_ERROR ;
+	if ((psf->rsrc.filedes = psf_open_fd (&psf->rsrc)) >= 0)
+	{	psf->rsrclength = psf_get_filelen_fd (psf->rsrc.filedes) ;
+		if (psf->rsrclength > 0 || (psf->rsrc.mode & SFM_WRITE))
+			return SFE_NO_ERROR ;
+		psf_close_fd (psf->rsrc.filedes) ;
+		psf->rsrc.filedes = -1 ;
+		} ;
+
+	if (psf->rsrc.filedes == - SFE_BAD_OPEN_MODE)
+	{	psf->error = SFE_BAD_OPEN_MODE ;
+		return psf->error ;
+		} ;
+
+	/*
+	** Now try for a resource fork stored as a separate file in the same
+	** directory, but preceded with a dot underscore.
+	*/
+	snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s._%s", psf->file.dir.c, psf->file.name.c) ;
+	psf->error = SFE_NO_ERROR ;
+	if ((psf->rsrc.filedes = psf_open_fd (&psf->rsrc)) >= 0)
+	{	psf->rsrclength = psf_get_filelen_fd (psf->rsrc.filedes) ;
+		return SFE_NO_ERROR ;
+		} ;
+
+	/*
+	** Now try for a resource fork stored in a separate file in the
+	** .AppleDouble/ directory.
+	*/
+	snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s.AppleDouble/%s", psf->file.dir.c, psf->file.name.c) ;
+	psf->error = SFE_NO_ERROR ;
+	if ((psf->rsrc.filedes = psf_open_fd (&psf->rsrc)) >= 0)
+	{	psf->rsrclength = psf_get_filelen_fd (psf->rsrc.filedes) ;
+		return SFE_NO_ERROR ;
+		} ;
+
+	/* No resource file found. */
+	if (psf->rsrc.filedes == -1)
+		psf_log_syserr (psf, errno) ;
+
+	psf->rsrc.filedes = -1 ;
+
+	return psf->error ;
+} /* psf_open_rsrc */
+
+sf_count_t
+psf_get_filelen (SF_PRIVATE *psf)
+{	sf_count_t	filelen ;
+
+	if (psf->virtual_io)
+		return psf->vio.get_filelen (psf->vio_user_data) ;
+
+	filelen = psf_get_filelen_fd (psf->file.filedes) ;
+
+	if (filelen == -1)
+	{	psf_log_syserr (psf, errno) ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	if (filelen == -SFE_BAD_STAT_SIZE)
+	{	psf->error = SFE_BAD_STAT_SIZE ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	switch (psf->file.mode)
+	{	case SFM_WRITE :
+			filelen = filelen - psf->fileoffset ;
+			break ;
+
+		case SFM_READ :
+			if (psf->fileoffset > 0 && psf->filelength > 0)
+				filelen = psf->filelength ;
+			break ;
+
+		case SFM_RDWR :
+			/*
+			** Cannot open embedded files SFM_RDWR so we don't need to
+			** subtract psf->fileoffset. We already have the answer we
+			** need.
+			*/
+			break ;
+
+		default :
+			/* Shouldn't be here, so return error. */
+			filelen = -1 ;
+		} ;
+
+	return filelen ;
+} /* psf_get_filelen */
+
+int
+psf_close_rsrc (SF_PRIVATE *psf)
+{	psf_close_fd (psf->rsrc.filedes) ;
+	psf->rsrc.filedes = -1 ;
+	return 0 ;
+} /* psf_close_rsrc */
+
+int
+psf_set_stdio (SF_PRIVATE *psf)
+{	int	error = 0 ;
+
+	switch (psf->file.mode)
+	{	case SFM_RDWR :
+				error = SFE_OPEN_PIPE_RDWR ;
+				break ;
+
+		case SFM_READ :
+				psf->file.filedes = 0 ;
+				break ;
+
+		case SFM_WRITE :
+				psf->file.filedes = 1 ;
+				break ;
+
+		default :
+				error = SFE_BAD_OPEN_MODE ;
+				break ;
+		} ;
+	psf->filelength = 0 ;
+
+	return error ;
+} /* psf_set_stdio */
+
+void
+psf_set_file (SF_PRIVATE *psf, int fd)
+{	psf->file.filedes = fd ;
+} /* psf_set_file */
+
+int
+psf_file_valid (SF_PRIVATE *psf)
+{	return (psf->file.filedes >= 0) ? SF_TRUE : SF_FALSE ;
+} /* psf_set_file */
+
+sf_count_t
+psf_fseek (SF_PRIVATE *psf, sf_count_t offset, int whence)
+{	sf_count_t	current_pos, new_position ;
+
+	if (psf->virtual_io)
+		return psf->vio.seek (offset, whence, psf->vio_user_data) ;
+
+	current_pos = psf_ftell (psf) ;
+
+	switch (whence)
+	{	case SEEK_SET :
+				offset += psf->fileoffset ;
+				break ;
+
+		case SEEK_END :
+				if (psf->file.mode == SFM_WRITE)
+				{	new_position = lseek (psf->file.filedes, offset, whence) ;
+
+					if (new_position < 0)
+						psf_log_syserr (psf, errno) ;
+
+					return new_position - psf->fileoffset ;
+					} ;
+
+				/* Transform SEEK_END into a SEEK_SET, ie find the file
+				** length add the requested offset (should be <= 0) to
+				** get the offset wrt the start of file.
+				*/
+				whence = SEEK_SET ;
+				offset = lseek (psf->file.filedes, 0, SEEK_END) + offset ;
+				break ;
+
+		case SEEK_CUR :
+				/* Translate a SEEK_CUR into a SEEK_SET. */
+				offset += current_pos ;
+				whence = SEEK_SET ;
+				break ;
+
+		default :
+				/* We really should not be here. */
+				psf_log_printf (psf, "psf_fseek : whence is %d *****.\n", whence) ;
+				return 0 ;
+		} ;
+
+	if (current_pos != offset)
+		new_position = lseek (psf->file.filedes, offset, whence) ;
+	else
+		new_position = offset ;
+
+	if (new_position < 0)
+		psf_log_syserr (psf, errno) ;
+
+	new_position -= psf->fileoffset ;
+
+	return new_position ;
+} /* psf_fseek */
+
+sf_count_t
+psf_fread (void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
+{	sf_count_t total = 0 ;
+	ssize_t	count ;
+
+	if (psf->virtual_io)
+		return psf->vio.read (ptr, bytes*items, psf->vio_user_data) / bytes ;
+
+	items *= bytes ;
+
+	/* Do this check after the multiplication above. */
+	if (items <= 0)
+		return 0 ;
+
+	while (items > 0)
+	{	/* Break the read down to a sensible size. */
+		count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : (ssize_t) items ;
+
+		count = read (psf->file.filedes, ((char*) ptr) + total, (size_t) count) ;
+
+		if (count == -1)
+		{	if (errno == EINTR)
+				continue ;
+
+			psf_log_syserr (psf, errno) ;
+			break ;
+			} ;
+
+		if (count == 0)
+			break ;
+
+		total += count ;
+		items -= count ;
+		} ;
+
+	if (psf->is_pipe)
+		psf->pipeoffset += total ;
+
+	return total / bytes ;
+} /* psf_fread */
+
+sf_count_t
+psf_fwrite (const void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
+{	sf_count_t total = 0 ;
+	ssize_t	count ;
+
+	if (psf->virtual_io)
+		return psf->vio.write (ptr, bytes*items, psf->vio_user_data) / bytes ;
+
+	items *= bytes ;
+
+	/* Do this check after the multiplication above. */
+	if (items <= 0)
+		return 0 ;
+
+	while (items > 0)
+	{	/* Break the writes down to a sensible size. */
+		count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : items ;
+
+		count = write (psf->file.filedes, ((const char*) ptr) + total, count) ;
+
+		if (count == -1)
+		{	if (errno == EINTR)
+				continue ;
+
+			psf_log_syserr (psf, errno) ;
+			break ;
+			} ;
+
+		if (count == 0)
+			break ;
+
+		total += count ;
+		items -= count ;
+		} ;
+
+	if (psf->is_pipe)
+		psf->pipeoffset += total ;
+
+	return total / bytes ;
+} /* psf_fwrite */
+
+sf_count_t
+psf_ftell (SF_PRIVATE *psf)
+{	sf_count_t pos ;
+
+	if (psf->virtual_io)
+		return psf->vio.tell (psf->vio_user_data) ;
+
+	if (psf->is_pipe)
+		return psf->pipeoffset ;
+
+	pos = lseek (psf->file.filedes, 0, SEEK_CUR) ;
+
+	if (pos == ((sf_count_t) -1))
+	{	psf_log_syserr (psf, errno) ;
+		return -1 ;
+		} ;
+
+	return pos - psf->fileoffset ;
+} /* psf_ftell */
+
+static int
+psf_close_fd (int fd)
+{	int retval ;
+
+	if (fd < 0)
+		return 0 ;
+
+	while ((retval = close (fd)) == -1 && errno == EINTR)
+		/* Do nothing. */ ;
+
+	return retval ;
+} /* psf_close_fd */
+
+sf_count_t
+psf_fgets (char *buffer, sf_count_t bufsize, SF_PRIVATE *psf)
+{	sf_count_t	k = 0 ;
+	sf_count_t		count ;
+
+	while (k < bufsize - 1)
+	{	count = read (psf->file.filedes, &(buffer [k]), 1) ;
+
+		if (count == -1)
+		{	if (errno == EINTR)
+				continue ;
+
+			psf_log_syserr (psf, errno) ;
+			break ;
+			} ;
+
+		if (count == 0 || buffer [k++] == '\n')
+			break ;
+		} ;
+
+	buffer [k] = 0 ;
+
+	return k ;
+} /* psf_fgets */
+
+int
+psf_is_pipe (SF_PRIVATE *psf)
+{	struct stat statbuf ;
+
+	if (psf->virtual_io)
+		return SF_FALSE ;
+
+	if (fstat (psf->file.filedes, &statbuf) == -1)
+	{	psf_log_syserr (psf, errno) ;
+		/* Default to maximum safety. */
+		return SF_TRUE ;
+		} ;
+
+	if (S_ISFIFO (statbuf.st_mode) || S_ISSOCK (statbuf.st_mode))
+		return SF_TRUE ;
+
+	return SF_FALSE ;
+} /* psf_is_pipe */
+
+static sf_count_t
+psf_get_filelen_fd (int fd)
+{	struct stat statbuf ;
+
+	/*
+	** Sanity check.
+	** If everything is OK, this will be optimised out.
+	*/
+	if (sizeof (statbuf.st_size) == 4 && sizeof (sf_count_t) == 8)
+		return (sf_count_t) -SFE_BAD_STAT_SIZE ;
+
+	if (fstat (fd, &statbuf) == -1)
+		return (sf_count_t) -1 ;
+
+	return statbuf.st_size ;
+} /* psf_get_filelen_fd */
+
+int
+psf_ftruncate (SF_PRIVATE *psf, sf_count_t len)
+{	int retval ;
+
+	/* Returns 0 on success, non-zero on failure. */
+	if (len < 0)
+		return -1 ;
+
+	if ((sizeof (off_t) < sizeof (sf_count_t)) && len > 0x7FFFFFFF)
+		return -1 ;
+
+	retval = ftruncate (psf->file.filedes, len) ;
+
+	if (retval == -1)
+		psf_log_syserr (psf, errno) ;
+
+	return retval ;
+} /* psf_ftruncate */
+
+void
+psf_init_files (SF_PRIVATE *psf)
+{	psf->file.filedes = -1 ;
+	psf->rsrc.filedes = -1 ;
+	psf->file.savedes = -1 ;
+} /* psf_init_files */
+
+void
+psf_use_rsrc (SF_PRIVATE *psf, int on_off)
+{
+	if (on_off)
+	{	if (psf->file.filedes != psf->rsrc.filedes)
+		{	psf->file.savedes = psf->file.filedes ;
+			psf->file.filedes = psf->rsrc.filedes ;
+			} ;
+		}
+	else if (psf->file.filedes == psf->rsrc.filedes)
+		psf->file.filedes = psf->file.savedes ;
+
+	return ;
+} /* psf_use_rsrc */
+
+static int
+psf_open_fd (PSF_FILE * pfile)
+{	int fd, oflag, mode ;
+
+	/*
+	** Sanity check. If everything is OK, this test and the printfs will
+	** be optimised out. This is meant to catch the problems caused by
+	** "sfconfig.h" being included after <stdio.h>.
+	*/
+	if (sizeof (off_t) != sizeof (sf_count_t))
+	{	puts ("\n\n*** Fatal error : sizeof (off_t) != sizeof (sf_count_t)") ;
+		puts ("*** This means that libsndfile was not configured correctly.\n") ;
+		exit (1) ;
+		} ;
+
+	switch (pfile->mode)
+	{	case SFM_READ :
+				oflag = O_RDONLY | O_BINARY ;
+				mode = 0 ;
+				break ;
+
+		case SFM_WRITE :
+				oflag = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY ;
+				mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ;
+				break ;
+
+		case SFM_RDWR :
+				oflag = O_RDWR | O_CREAT | O_BINARY ;
+				mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ;
+				break ;
+
+		default :
+				return - SFE_BAD_OPEN_MODE ;
+				break ;
+		} ;
+
+	if (mode == 0)
+		fd = open (pfile->path.c, oflag) ;
+	else
+		fd = open (pfile->path.c, oflag, mode) ;
+
+	return fd ;
+} /* psf_open_fd */
+
+static void
+psf_log_syserr (SF_PRIVATE *psf, int error)
+{
+	/* Only log an error if no error has been set yet. */
+	if (psf->error == 0)
+	{	psf->error = SFE_SYSTEM ;
+		snprintf (psf->syserr, sizeof (psf->syserr), "System error : %s.", strerror (error)) ;
+		} ;
+
+	return ;
+} /* psf_log_syserr */
+
+void
+psf_fsync (SF_PRIVATE *psf)
+{
+#if HAVE_FSYNC
+    if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+        fsync (psf->file.filedes) ;
+#else
+    psf = NULL ;
+#endif
+} /* psf_fsync */
+
+#elif	USE_WINDOWS_API
+
+/* Win32 file i/o functions implemented using native Win32 API */
+
+#include <windows.h>
+#include <io.h>
+
+static int psf_close_handle (HANDLE handle) ;
+static HANDLE psf_open_handle (PSF_FILE * pfile) ;
+static sf_count_t psf_get_filelen_handle (HANDLE handle) ;
+
+/* USE_WINDOWS_API */ int
+psf_fopen (SF_PRIVATE *psf)
+{
+	psf->error = 0 ;
+	psf->file.handle = psf_open_handle (&psf->file) ;
+
+	if (psf->file.handle == NULL)
+		psf_log_syserr (psf, GetLastError ()) ;
+
+	return psf->error ;
+} /* psf_fopen */
+
+/* USE_WINDOWS_API */ int
+psf_fclose (SF_PRIVATE *psf)
+{	int retval ;
+
+	if (psf->virtual_io)
+		return 0 ;
+
+	if (psf->file.do_not_close_descriptor)
+	{	psf->file.handle = NULL ;
+		return 0 ;
+		} ;
+
+	if ((retval = psf_close_handle (psf->file.handle)) == -1)
+		psf_log_syserr (psf, GetLastError ()) ;
+
+	psf->file.handle = NULL ;
+
+	return retval ;
+} /* psf_fclose */
+
+/* USE_WINDOWS_API */ int
+psf_open_rsrc (SF_PRIVATE *psf)
+{
+	if (psf->rsrc.handle != NULL)
+		return 0 ;
+
+	/* Test for MacOSX style resource fork on HPFS or HPFS+ filesystems. */
+	snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s/rsrc", psf->file.path.c) ;
+	psf->error = SFE_NO_ERROR ;
+	if ((psf->rsrc.handle = psf_open_handle (&psf->rsrc)) != NULL)
+	{	psf->rsrclength = psf_get_filelen_handle (psf->rsrc.handle) ;
+		return SFE_NO_ERROR ;
+		} ;
+
+	/*
+	** Now try for a resource fork stored as a separate file in the same
+	** directory, but preceded with a dot underscore.
+	*/
+	snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s._%s", psf->file.dir.c, psf->file.name.c) ;
+	psf->error = SFE_NO_ERROR ;
+	if ((psf->rsrc.handle = psf_open_handle (&psf->rsrc)) != NULL)
+	{	psf->rsrclength = psf_get_filelen_handle (psf->rsrc.handle) ;
+		return SFE_NO_ERROR ;
+		} ;
+
+	/*
+	** Now try for a resource fork stored in a separate file in the
+	** .AppleDouble/ directory.
+	*/
+	snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s.AppleDouble/%s", psf->file.dir.c, psf->file.name.c) ;
+	psf->error = SFE_NO_ERROR ;
+	if ((psf->rsrc.handle = psf_open_handle (&psf->rsrc)) != NULL)
+	{	psf->rsrclength = psf_get_filelen_handle (psf->rsrc.handle) ;
+      		return SFE_NO_ERROR ;
+		} ;
+
+	/* No resource file found. */
+	if (psf->rsrc.handle == NULL)
+		psf_log_syserr (psf, GetLastError ()) ;
+
+	psf->rsrc.handle = NULL ;
+
+	return psf->error ;
+} /* psf_open_rsrc */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_get_filelen (SF_PRIVATE *psf)
+{	sf_count_t	filelen ;
+
+	if (psf->virtual_io)
+		return psf->vio.get_filelen (psf->vio_user_data) ;
+
+	filelen = psf_get_filelen_handle (psf->file.handle) ;
+
+	if (filelen == -1)
+	{	psf_log_syserr (psf, errno) ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	if (filelen == -SFE_BAD_STAT_SIZE)
+	{	psf->error = SFE_BAD_STAT_SIZE ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	switch (psf->file.mode)
+	{	case SFM_WRITE :
+			filelen = filelen - psf->fileoffset ;
+			break ;
+
+		case SFM_READ :
+			if (psf->fileoffset > 0 && psf->filelength > 0)
+				filelen = psf->filelength ;
+			break ;
+
+		case SFM_RDWR :
+			/*
+			** Cannot open embedded files SFM_RDWR so we don't need to
+			** subtract psf->fileoffset. We already have the answer we
+			** need.
+			*/
+			break ;
+
+		default :
+			/* Shouldn't be here, so return error. */
+			filelen = -1 ;
+		} ;
+
+	return filelen ;
+} /* psf_get_filelen */
+
+/* USE_WINDOWS_API */ void
+psf_init_files (SF_PRIVATE *psf)
+{	psf->file.handle = NULL ;
+	psf->rsrc.handle = NULL ;
+	psf->file.hsaved = NULL ;
+} /* psf_init_files */
+
+/* USE_WINDOWS_API */ void
+psf_use_rsrc (SF_PRIVATE *psf, int on_off)
+{
+	if (on_off)
+	{	if (psf->file.handle != psf->rsrc.handle)
+		{	psf->file.hsaved = psf->file.handle ;
+			psf->file.handle = psf->rsrc.handle ;
+			} ;
+		}
+	else if (psf->file.handle == psf->rsrc.handle)
+		psf->file.handle = psf->file.hsaved ;
+
+	return ;
+} /* psf_use_rsrc */
+
+/* USE_WINDOWS_API */ static HANDLE
+psf_open_handle (PSF_FILE * pfile)
+{	DWORD dwDesiredAccess ;
+	DWORD dwShareMode ;
+	DWORD dwCreationDistribution ;
+	HANDLE handle ;
+
+	switch (pfile->mode)
+	{	case SFM_READ :
+				dwDesiredAccess = GENERIC_READ ;
+				dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE ;
+				dwCreationDistribution = OPEN_EXISTING ;
+				break ;
+
+		case SFM_WRITE :
+				dwDesiredAccess = GENERIC_WRITE ;
+				dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE ;
+				dwCreationDistribution = CREATE_ALWAYS ;
+				break ;
+
+		case SFM_RDWR :
+				dwDesiredAccess = GENERIC_READ | GENERIC_WRITE ;
+				dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE ;
+				dwCreationDistribution = OPEN_ALWAYS ;
+				break ;
+
+		default :
+				return NULL ;
+		} ;
+
+	if (pfile->use_wchar)
+		handle = CreateFileW (
+					pfile->path.wc,				/* pointer to name of the file */
+					dwDesiredAccess,			/* access (read-write) mode */
+					dwShareMode,				/* share mode */
+					0,							/* pointer to security attributes */
+					dwCreationDistribution,		/* how to create */
+					FILE_ATTRIBUTE_NORMAL,		/* file attributes (could use FILE_FLAG_SEQUENTIAL_SCAN) */
+					NULL						/* handle to file with attributes to copy */
+					) ;
+	else
+		handle = CreateFile (
+					pfile->path.c,				/* pointer to name of the file */
+					dwDesiredAccess,			/* access (read-write) mode */
+					dwShareMode,				/* share mode */
+					0,							/* pointer to security attributes */
+					dwCreationDistribution,		/* how to create */
+					FILE_ATTRIBUTE_NORMAL,		/* file attributes (could use FILE_FLAG_SEQUENTIAL_SCAN) */
+					NULL						/* handle to file with attributes to copy */
+					) ;
+
+	if (handle == INVALID_HANDLE_VALUE)
+		return NULL ;
+
+	return handle ;
+} /* psf_open_handle */
+
+/* USE_WINDOWS_API */ static void
+psf_log_syserr (SF_PRIVATE *psf, int error)
+{	LPVOID lpMsgBuf ;
+
+	/* Only log an error if no error has been set yet. */
+	if (psf->error == 0)
+	{	psf->error = SFE_SYSTEM ;
+
+		FormatMessage (
+			FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+			NULL,
+			error,
+			MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
+			(LPTSTR) &lpMsgBuf,
+			0,
+			NULL
+			) ;
+
+		snprintf (psf->syserr, sizeof (psf->syserr), "System error : %s", (char*) lpMsgBuf) ;
+		LocalFree (lpMsgBuf) ;
+		} ;
+
+	return ;
+} /* psf_log_syserr */
+
+
+/* USE_WINDOWS_API */ int
+psf_close_rsrc (SF_PRIVATE *psf)
+{	psf_close_handle (psf->rsrc.handle) ;
+	psf->rsrc.handle = NULL ;
+	return 0 ;
+} /* psf_close_rsrc */
+
+
+/* USE_WINDOWS_API */ int
+psf_set_stdio (SF_PRIVATE *psf)
+{	HANDLE	handle = NULL ;
+	int	error = 0 ;
+
+	switch (psf->file.mode)
+	{	case SFM_RDWR :
+				error = SFE_OPEN_PIPE_RDWR ;
+				break ;
+
+		case SFM_READ :
+				handle = GetStdHandle (STD_INPUT_HANDLE) ;
+				psf->file.do_not_close_descriptor = 1 ;
+				break ;
+
+		case SFM_WRITE :
+				handle = GetStdHandle (STD_OUTPUT_HANDLE) ;
+				psf->file.do_not_close_descriptor = 1 ;
+				break ;
+
+		default :
+				error = SFE_BAD_OPEN_MODE ;
+				break ;
+		} ;
+
+	psf->file.handle = handle ;
+	psf->filelength = 0 ;
+
+	return error ;
+} /* psf_set_stdio */
+
+/* USE_WINDOWS_API */ void
+psf_set_file (SF_PRIVATE *psf, int fd)
+{	HANDLE handle ;
+	intptr_t osfhandle ;
+
+	osfhandle = _get_osfhandle (fd) ;
+	handle = (HANDLE) osfhandle ;
+
+	psf->file.handle = handle ;
+} /* psf_set_file */
+
+/* USE_WINDOWS_API */ int
+psf_file_valid (SF_PRIVATE *psf)
+{	if (psf->file.handle == NULL)
+		return SF_FALSE ;
+	if (psf->file.handle == INVALID_HANDLE_VALUE)
+		return SF_FALSE ;
+	return SF_TRUE ;
+} /* psf_set_file */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_fseek (SF_PRIVATE *psf, sf_count_t offset, int whence)
+{	sf_count_t new_position ;
+	LONG lDistanceToMove, lDistanceToMoveHigh ;
+	DWORD dwMoveMethod ;
+	DWORD dwResult, dwError ;
+
+	if (psf->virtual_io)
+		return psf->vio.seek (offset, whence, psf->vio_user_data) ;
+
+	switch (whence)
+	{	case SEEK_SET :
+				offset += psf->fileoffset ;
+				dwMoveMethod = FILE_BEGIN ;
+				break ;
+
+		case SEEK_END :
+				dwMoveMethod = FILE_END ;
+				break ;
+
+		default :
+				dwMoveMethod = FILE_CURRENT ;
+				break ;
+		} ;
+
+	lDistanceToMove = (DWORD) (offset & 0xFFFFFFFF) ;
+	lDistanceToMoveHigh = (DWORD) ((offset >> 32) & 0xFFFFFFFF) ;
+
+	dwResult = SetFilePointer (psf->file.handle, lDistanceToMove, &lDistanceToMoveHigh, dwMoveMethod) ;
+
+	if (dwResult == 0xFFFFFFFF)
+		dwError = GetLastError () ;
+	else
+		dwError = NO_ERROR ;
+
+	if (dwError != NO_ERROR)
+	{	psf_log_syserr (psf, dwError) ;
+		return -1 ;
+		} ;
+
+	new_position = (dwResult + ((__int64) lDistanceToMoveHigh << 32)) - psf->fileoffset ;
+
+	return new_position ;
+} /* psf_fseek */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_fread (void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
+{	sf_count_t total = 0 ;
+	ssize_t count ;
+	DWORD dwNumberOfBytesRead ;
+
+	if (psf->virtual_io)
+		return psf->vio.read (ptr, bytes*items, psf->vio_user_data) / bytes ;
+
+	items *= bytes ;
+
+	/* Do this check after the multiplication above. */
+	if (items <= 0)
+		return 0 ;
+
+	while (items > 0)
+	{	/* Break the writes down to a sensible size. */
+		count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : (ssize_t) items ;
+
+		if (ReadFile (psf->file.handle, ((char*) ptr) + total, count, &dwNumberOfBytesRead, 0) == 0)
+		{	psf_log_syserr (psf, GetLastError ()) ;
+			break ;
+			}
+		else
+			count = dwNumberOfBytesRead ;
+
+		if (count == 0)
+			break ;
+
+		total += count ;
+		items -= count ;
+		} ;
+
+	if (psf->is_pipe)
+		psf->pipeoffset += total ;
+
+	return total / bytes ;
+} /* psf_fread */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_fwrite (const void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
+{	sf_count_t total = 0 ;
+	ssize_t	 count ;
+	DWORD dwNumberOfBytesWritten ;
+
+	if (psf->virtual_io)
+		return psf->vio.write (ptr, bytes * items, psf->vio_user_data) / bytes ;
+
+	items *= bytes ;
+
+	/* Do this check after the multiplication above. */
+	if (items <= 0)
+		return 0 ;
+
+	while (items > 0)
+	{	/* Break the writes down to a sensible size. */
+		count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : (ssize_t) items ;
+
+		if (WriteFile (psf->file.handle, ((const char*) ptr) + total, count, &dwNumberOfBytesWritten, 0) == 0)
+		{	psf_log_syserr (psf, GetLastError ()) ;
+			break ;
+			}
+		else
+			count = dwNumberOfBytesWritten ;
+
+		if (count == 0)
+			break ;
+
+		total += count ;
+		items -= count ;
+		} ;
+
+	if (psf->is_pipe)
+		psf->pipeoffset += total ;
+
+	return total / bytes ;
+} /* psf_fwrite */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_ftell (SF_PRIVATE *psf)
+{	sf_count_t pos ;
+	LONG lDistanceToMoveLow, lDistanceToMoveHigh ;
+	DWORD dwResult, dwError ;
+
+	if (psf->virtual_io)
+		return psf->vio.tell (psf->vio_user_data) ;
+
+	if (psf->is_pipe)
+		return psf->pipeoffset ;
+
+	lDistanceToMoveLow = 0 ;
+	lDistanceToMoveHigh = 0 ;
+
+	dwResult = SetFilePointer (psf->file.handle, lDistanceToMoveLow, &lDistanceToMoveHigh, FILE_CURRENT) ;
+
+	if (dwResult == 0xFFFFFFFF)
+		dwError = GetLastError () ;
+	else
+		dwError = NO_ERROR ;
+
+	if (dwError != NO_ERROR)
+	{	psf_log_syserr (psf, dwError) ;
+		return -1 ;
+		} ;
+
+	pos = (dwResult + ((__int64) lDistanceToMoveHigh << 32)) ;
+
+	return pos - psf->fileoffset ;
+} /* psf_ftell */
+
+/* USE_WINDOWS_API */ static int
+psf_close_handle (HANDLE handle)
+{	if (handle == NULL)
+		return 0 ;
+
+	if (CloseHandle (handle) == 0)
+		return -1 ;
+
+	return 0 ;
+} /* psf_close_handle */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_fgets (char *buffer, sf_count_t bufsize, SF_PRIVATE *psf)
+{	sf_count_t k = 0 ;
+	sf_count_t count ;
+	DWORD dwNumberOfBytesRead ;
+
+	while (k < bufsize - 1)
+	{	if (ReadFile (psf->file.handle, &(buffer [k]), 1, &dwNumberOfBytesRead, 0) == 0)
+		{	psf_log_syserr (psf, GetLastError ()) ;
+			break ;
+			}
+		else
+		{	count = dwNumberOfBytesRead ;
+			/* note that we only check for '\n' not other line endings such as CRLF */
+			if (count == 0 || buffer [k++] == '\n')
+				break ;
+			} ;
+		} ;
+
+	buffer [k] = 0 ;
+
+	return k ;
+} /* psf_fgets */
+
+/* USE_WINDOWS_API */ int
+psf_is_pipe (SF_PRIVATE *psf)
+{
+	if (psf->virtual_io)
+		return SF_FALSE ;
+
+	if (GetFileType (psf->file.handle) == FILE_TYPE_DISK)
+		return SF_FALSE ;
+
+	/* Default to maximum safety. */
+	return SF_TRUE ;
+} /* psf_is_pipe */
+
+/* USE_WINDOWS_API */ sf_count_t
+psf_get_filelen_handle (HANDLE handle)
+{	sf_count_t filelen ;
+	DWORD dwFileSizeLow, dwFileSizeHigh, dwError = NO_ERROR ;
+
+	dwFileSizeLow = GetFileSize (handle, &dwFileSizeHigh) ;
+
+	if (dwFileSizeLow == 0xFFFFFFFF)
+		dwError = GetLastError () ;
+
+	if (dwError != NO_ERROR)
+		return (sf_count_t) -1 ;
+
+	filelen = dwFileSizeLow + ((__int64) dwFileSizeHigh << 32) ;
+
+	return filelen ;
+} /* psf_get_filelen_handle */
+
+/* USE_WINDOWS_API */ void
+psf_fsync (SF_PRIVATE *psf)
+{	FlushFileBuffers (psf->file.handle) ;
+} /* psf_fsync */
+
+
+/* USE_WINDOWS_API */ int
+psf_ftruncate (SF_PRIVATE *psf, sf_count_t len)
+{	int retval = 0 ;
+	LONG lDistanceToMoveLow, lDistanceToMoveHigh ;
+	DWORD dwResult, dwError = NO_ERROR ;
+
+	/* This implementation trashes the current file position.
+	** should it save and restore it? what if the current position is past
+	** the new end of file?
+	*/
+
+	/* Returns 0 on success, non-zero on failure. */
+	if (len < 0)
+		return 1 ;
+
+	lDistanceToMoveLow = (DWORD) (len & 0xFFFFFFFF) ;
+	lDistanceToMoveHigh = (DWORD) ((len >> 32) & 0xFFFFFFFF) ;
+
+	dwResult = SetFilePointer (psf->file.handle, lDistanceToMoveLow, &lDistanceToMoveHigh, FILE_BEGIN) ;
+
+	if (dwResult == 0xFFFFFFFF)
+		dwError = GetLastError () ;
+
+	if (dwError != NO_ERROR)
+	{	retval = -1 ;
+		psf_log_syserr (psf, dwError) ;
+		}
+	else
+	{	/* Note: when SetEndOfFile is used to extend a file, the contents of the
+		** new portion of the file is undefined. This is unlike chsize(),
+		** which guarantees that the new portion of the file will be zeroed.
+		** Not sure if this is important or not.
+		*/
+		if (SetEndOfFile (psf->file.handle) == 0)
+		{	retval = -1 ;
+			psf_log_syserr (psf, GetLastError ()) ;
+			} ;
+		} ;
+
+	return retval ;
+} /* psf_ftruncate */
+
+
+#else
+/* Win32 file i/o functions implemented using Unix-style file i/o API */
+
+/* Win32 has a 64 file offset seek function:
+**
+**		__int64 _lseeki64 (int handle, __int64 offset, int origin) ;
+**
+** It also has a 64 bit fstat function:
+**
+**		int fstati64 (int, struct _stati64) ;
+**
+** but the fscking thing doesn't work!!!!! The file size parameter returned
+** by this function is only valid up until more data is written at the end of
+** the file. That makes this function completely 100% useless.
+*/
+
+#include <io.h>
+#include <direct.h>
+
+/* Win32 */ int
+psf_fopen (SF_PRIVATE *psf, const char *pathname, int open_mode)
+{	int oflag, mode ;
+
+	switch (open_mode)
+	{	case SFM_READ :
+				oflag = O_RDONLY | O_BINARY ;
+				mode = 0 ;
+				break ;
+
+		case SFM_WRITE :
+				oflag = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY ;
+				mode = S_IRUSR | S_IWUSR | S_IRGRP ;
+				break ;
+
+		case SFM_RDWR :
+				oflag = O_RDWR | O_CREAT | O_BINARY ;
+				mode = S_IRUSR | S_IWUSR | S_IRGRP ;
+				break ;
+
+		default :
+				psf->error = SFE_BAD_OPEN_MODE ;
+				return -1 ;
+				break ;
+		} ;
+
+	if (mode == 0)
+		psf->file.filedes = open (pathname, oflag) ;
+	else
+		psf->file.filedes = open (pathname, oflag, mode) ;
+
+	if (psf->file.filedes == -1)
+		psf_log_syserr (psf, errno) ;
+
+	return psf->file.filedes ;
+} /* psf_fopen */
+
+/* Win32 */ sf_count_t
+psf_fseek (SF_PRIVATE *psf, sf_count_t offset, int whence)
+{	sf_count_t	new_position ;
+
+	if (psf->virtual_io)
+		return psf->vio.seek (offset, whence, psf->vio_user_data) ;
+
+	switch (whence)
+	{	case SEEK_SET :
+				offset += psf->fileoffset ;
+				break ;
+
+		case SEEK_END :
+				if (psf->file.mode == SFM_WRITE)
+				{	new_position = _lseeki64 (psf->file.filedes, offset, whence) ;
+
+					if (new_position < 0)
+						psf_log_syserr (psf, errno) ;
+
+					return new_position - psf->fileoffset ;
+					} ;
+
+				/* Transform SEEK_END into a SEEK_SET, ie find the file
+				** length add the requested offset (should be <= 0) to
+				** get the offset wrt the start of file.
+				*/
+				whence = SEEK_SET ;
+				offset = _lseeki64 (psf->file.filedes, 0, SEEK_END) + offset ;
+				break ;
+
+		default :
+				/* No need to do anything about SEEK_CUR. */
+				break ;
+		} ;
+
+	/*
+	** Bypass weird Win32-ism if necessary.
+	** _lseeki64() returns an "invalid parameter" error if called with the
+	** offset == 0 and whence == SEEK_CUR.
+	*** Use the _telli64() function instead.
+	*/
+	if (offset == 0 && whence == SEEK_CUR)
+		new_position = _telli64 (psf->file.filedes) ;
+	else
+		new_position = _lseeki64 (psf->file.filedes, offset, whence) ;
+
+	if (new_position < 0)
+		psf_log_syserr (psf, errno) ;
+
+	new_position -= psf->fileoffset ;
+
+	return new_position ;
+} /* psf_fseek */
+
+/* Win32 */ sf_count_t
+psf_fread (void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
+{	sf_count_t total = 0 ;
+	ssize_t	 count ;
+
+	if (psf->virtual_io)
+		return psf->vio.read (ptr, bytes*items, psf->vio_user_data) / bytes ;
+
+	items *= bytes ;
+
+	/* Do this check after the multiplication above. */
+	if (items <= 0)
+		return 0 ;
+
+	while (items > 0)
+	{	/* Break the writes down to a sensible size. */
+		count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : (ssize_t) items ;
+
+		count = read (psf->file.filedes, ((char*) ptr) + total, (size_t) count) ;
+
+		if (count == -1)
+		{	if (errno == EINTR)
+				continue ;
+
+			psf_log_syserr (psf, errno) ;
+			break ;
+			} ;
+
+		if (count == 0)
+			break ;
+
+		total += count ;
+		items -= count ;
+		} ;
+
+	return total / bytes ;
+} /* psf_fread */
+
+/* Win32 */ sf_count_t
+psf_fwrite (const void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
+{	sf_count_t total = 0 ;
+	ssize_t	 count ;
+
+	if (psf->virtual_io)
+		return psf->vio.write (ptr, bytes*items, psf->vio_user_data) / bytes ;
+
+	items *= bytes ;
+
+	/* Do this check after the multiplication above. */
+	if (items <= 0)
+		return 0 ;
+
+	while (items > 0)
+	{	/* Break the writes down to a sensible size. */
+		count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : items ;
+
+		count = write (psf->file.filedes, ((const char*) ptr) + total, count) ;
+
+		if (count == -1)
+		{	if (errno == EINTR)
+				continue ;
+
+			psf_log_syserr (psf, errno) ;
+			break ;
+			} ;
+
+		if (count == 0)
+			break ;
+
+		total += count ;
+		items -= count ;
+		} ;
+
+	return total / bytes ;
+} /* psf_fwrite */
+
+/* Win32 */ sf_count_t
+psf_ftell (SF_PRIVATE *psf)
+{	sf_count_t pos ;
+
+	if (psf->virtual_io)
+		return psf->vio.tell (psf->vio_user_data) ;
+
+	pos = _telli64 (psf->file.filedes) ;
+
+	if (pos == ((sf_count_t) -1))
+	{	psf_log_syserr (psf, errno) ;
+		return -1 ;
+		} ;
+
+	return pos - psf->fileoffset ;
+} /* psf_ftell */
+
+/* Win32 */ int
+psf_fclose (SF_PRIVATE *psf)
+{	int retval ;
+
+	while ((retval = close (psf->file.filedes)) == -1 && errno == EINTR)
+		/* Do nothing. */ ;
+
+	if (retval == -1)
+		psf_log_syserr (psf, errno) ;
+
+	psf->file.filedes = -1 ;
+
+	return retval ;
+} /* psf_fclose */
+
+/* Win32 */ sf_count_t
+psf_fgets (char *buffer, sf_count_t bufsize, SF_PRIVATE *psf)
+{	sf_count_t	k = 0 ;
+	sf_count_t	count ;
+
+	while (k < bufsize - 1)
+	{	count = read (psf->file.filedes, &(buffer [k]), 1) ;
+
+		if (count == -1)
+		{	if (errno == EINTR)
+				continue ;
+
+			psf_log_syserr (psf, errno) ;
+			break ;
+			} ;
+
+		if (count == 0 || buffer [k++] == '\n')
+			break ;
+		} ;
+
+	buffer [k] = 0 ;
+
+	return k ;
+} /* psf_fgets */
+
+/* Win32 */ int
+psf_is_pipe (SF_PRIVATE *psf)
+{	struct stat statbuf ;
+
+	if (psf->virtual_io)
+		return SF_FALSE ;
+
+	/* Not sure if this works. */
+	if (fstat (psf->file.filedes, &statbuf) == -1)
+	{	psf_log_syserr (psf, errno) ;
+		/* Default to maximum safety. */
+		return SF_TRUE ;
+		} ;
+
+	/* These macros are defined in Win32/unistd.h. */
+	if (S_ISFIFO (statbuf.st_mode) || S_ISSOCK (statbuf.st_mode))
+		return SF_TRUE ;
+
+	return SF_FALSE ;
+} /* psf_checkpipe */
+
+/* Win32 */ sf_count_t
+psf_get_filelen (SF_PRIVATE *psf)
+{
+#if 0
+	/*
+	** Windoze is SOOOOO FUCKED!!!!!!!
+	** This code should work but doesn't. Why?
+	** Code below does work.
+	*/
+	struct _stati64 statbuf ;
+
+	if (_fstati64 (psf->file.filedes, &statbuf))
+	{	psf_log_syserr (psf, errno) ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	return statbuf.st_size ;
+#else
+	sf_count_t current, filelen ;
+
+	if (psf->virtual_io)
+		return psf->vio.get_filelen (psf->vio_user_data) ;
+
+	if ((current = _telli64 (psf->file.filedes)) < 0)
+	{	psf_log_syserr (psf, errno) ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	/*
+	** Lets face it, windoze if FUBAR!!!
+	**
+	** For some reason, I have to call _lseeki64() TWICE to get to the
+	** end of the file.
+	**
+	** This might have been avoided if windows had implemented the POSIX
+	** standard function fsync() but NO, that would have been too easy.
+	**
+	** I am VERY close to saying that windoze will no longer be supported
+	** by libsndfile and changing the license to GPL at the same time.
+	*/
+
+	_lseeki64 (psf->file.filedes, 0, SEEK_END) ;
+
+	if ((filelen = _lseeki64 (psf->file.filedes, 0, SEEK_END)) < 0)
+	{	psf_log_syserr (psf, errno) ;
+		return (sf_count_t) -1 ;
+		} ;
+
+	if (filelen > current)
+		_lseeki64 (psf->file.filedes, current, SEEK_SET) ;
+
+	switch (psf->file.mode)
+	{	case SFM_WRITE :
+			filelen = filelen - psf->fileoffset ;
+			break ;
+
+		case SFM_READ :
+			if (psf->fileoffset > 0 && psf->filelength > 0)
+				filelen = psf->filelength ;
+			break ;
+
+		case SFM_RDWR :
+			/*
+			** Cannot open embedded files SFM_RDWR so we don't need to
+			** subtract psf->fileoffset. We already have the answer we
+			** need.
+			*/
+			break ;
+
+		default :
+			filelen = 0 ;
+		} ;
+
+	return filelen ;
+#endif
+} /* psf_get_filelen */
+
+/* Win32 */ int
+psf_ftruncate (SF_PRIVATE *psf, sf_count_t len)
+{	int retval ;
+
+	/* Returns 0 on success, non-zero on failure. */
+	if (len < 0)
+		return 1 ;
+
+	/* The global village idiots at micorsoft decided to implement
+	** nearly all the required 64 bit file offset functions except
+	** for one, truncate. The fscking morons!
+	**
+	** This is not 64 bit file offset clean. Somone needs to clean
+	** this up.
+	*/
+	if (len > 0x7FFFFFFF)
+		return -1 ;
+
+	retval = chsize (psf->file.filedes, len) ;
+
+	if (retval == -1)
+		psf_log_syserr (psf, errno) ;
+
+	return retval ;
+} /* psf_ftruncate */
+
+
+static void
+psf_log_syserr (SF_PRIVATE *psf, int error)
+{
+	/* Only log an error if no error has been set yet. */
+	if (psf->error == 0)
+	{	psf->error = SFE_SYSTEM ;
+		snprintf (psf->syserr, sizeof (psf->syserr), "System error : %s", strerror (error)) ;
+		} ;
+
+	return ;
+} /* psf_log_syserr */
+
+#endif
+