1551 lines
34 KiB
C
1551 lines
34 KiB
C
/*
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** Copyright (C) 2002-2013 Erik de Castro Lopo <erikd@mega-nerd.com>
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** Copyright (C) 2003 Ross Bencina <rbencina@iprimus.com.au>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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** The file is split into three sections as follows:
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** - The top section (USE_WINDOWS_API == 0) for Linux, Unix and MacOSX
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** systems (including Cygwin).
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** - The middle section (USE_WINDOWS_API == 1) for microsoft windows
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** (including MinGW) using the native windows API.
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** - A legacy windows section which attempted to work around grevious
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** bugs in microsoft's POSIX implementation.
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*/
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/*
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** The header file sfconfig.h MUST be included before the others to ensure
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** that large file support is enabled correctly on Unix systems.
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <stdlib.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if (HAVE_DECL_S_IRGRP == 0)
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#include <sf_unistd.h>
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#endif
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "sndfile.h"
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#include "common.h"
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#define SENSIBLE_SIZE (0x40000000)
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/*
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** Neat solution to the Win32/OS2 binary file flage requirement.
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** If O_BINARY isn't already defined by the inclusion of the system
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** headers, set it to zero.
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*/
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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static void psf_log_syserr (SF_PRIVATE *psf, int error) ;
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#if (USE_WINDOWS_API == 0)
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/*------------------------------------------------------------------------------
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** Win32 stuff at the bottom of the file. Unix and other sensible OSes here.
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*/
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static int psf_close_fd (int fd) ;
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static int psf_open_fd (PSF_FILE * pfile) ;
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static sf_count_t psf_get_filelen_fd (int fd) ;
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int
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psf_fopen (SF_PRIVATE *psf)
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{
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psf->error = 0 ;
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psf->file.filedes = psf_open_fd (&psf->file) ;
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if (psf->file.filedes == - SFE_BAD_OPEN_MODE)
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{ psf->error = SFE_BAD_OPEN_MODE ;
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psf->file.filedes = -1 ;
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return psf->error ;
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} ;
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if (psf->file.filedes == -1)
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psf_log_syserr (psf, errno) ;
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return psf->error ;
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} /* psf_fopen */
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int
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psf_fclose (SF_PRIVATE *psf)
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{ int retval ;
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if (psf->virtual_io)
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return 0 ;
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if (psf->file.do_not_close_descriptor)
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{ psf->file.filedes = -1 ;
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return 0 ;
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} ;
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if ((retval = psf_close_fd (psf->file.filedes)) == -1)
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psf_log_syserr (psf, errno) ;
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psf->file.filedes = -1 ;
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return retval ;
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} /* psf_fclose */
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int
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psf_open_rsrc (SF_PRIVATE *psf)
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{
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if (psf->rsrc.filedes > 0)
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return 0 ;
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/* Test for MacOSX style resource fork on HPFS or HPFS+ filesystems. */
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snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s/..namedfork/rsrc", psf->file.path.c) ;
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psf->error = SFE_NO_ERROR ;
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if ((psf->rsrc.filedes = psf_open_fd (&psf->rsrc)) >= 0)
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{ psf->rsrclength = psf_get_filelen_fd (psf->rsrc.filedes) ;
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if (psf->rsrclength > 0 || (psf->rsrc.mode & SFM_WRITE))
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return SFE_NO_ERROR ;
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psf_close_fd (psf->rsrc.filedes) ;
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psf->rsrc.filedes = -1 ;
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} ;
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if (psf->rsrc.filedes == - SFE_BAD_OPEN_MODE)
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{ psf->error = SFE_BAD_OPEN_MODE ;
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return psf->error ;
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} ;
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/*
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** Now try for a resource fork stored as a separate file in the same
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** directory, but preceded with a dot underscore.
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*/
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snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s._%s", psf->file.dir.c, psf->file.name.c) ;
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psf->error = SFE_NO_ERROR ;
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if ((psf->rsrc.filedes = psf_open_fd (&psf->rsrc)) >= 0)
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{ psf->rsrclength = psf_get_filelen_fd (psf->rsrc.filedes) ;
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return SFE_NO_ERROR ;
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} ;
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/*
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** Now try for a resource fork stored in a separate file in the
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** .AppleDouble/ directory.
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*/
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snprintf (psf->rsrc.path.c, sizeof (psf->rsrc.path.c), "%s.AppleDouble/%s", psf->file.dir.c, psf->file.name.c) ;
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psf->error = SFE_NO_ERROR ;
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if ((psf->rsrc.filedes = psf_open_fd (&psf->rsrc)) >= 0)
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{ psf->rsrclength = psf_get_filelen_fd (psf->rsrc.filedes) ;
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return SFE_NO_ERROR ;
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} ;
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/* No resource file found. */
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if (psf->rsrc.filedes == -1)
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psf_log_syserr (psf, errno) ;
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psf->rsrc.filedes = -1 ;
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return psf->error ;
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} /* psf_open_rsrc */
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sf_count_t
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psf_get_filelen (SF_PRIVATE *psf)
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{ sf_count_t filelen ;
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if (psf->virtual_io)
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return psf->vio.get_filelen (psf->vio_user_data) ;
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filelen = psf_get_filelen_fd (psf->file.filedes) ;
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if (filelen == -1)
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{ psf_log_syserr (psf, errno) ;
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return (sf_count_t) -1 ;
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} ;
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if (filelen == -SFE_BAD_STAT_SIZE)
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{ psf->error = SFE_BAD_STAT_SIZE ;
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return (sf_count_t) -1 ;
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} ;
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switch (psf->file.mode)
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{ case SFM_WRITE :
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filelen = filelen - psf->fileoffset ;
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break ;
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case SFM_READ :
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if (psf->fileoffset > 0 && psf->filelength > 0)
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filelen = psf->filelength ;
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break ;
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case SFM_RDWR :
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/*
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** Cannot open embedded files SFM_RDWR so we don't need to
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** subtract psf->fileoffset. We already have the answer we
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** need.
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*/
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break ;
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default :
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/* Shouldn't be here, so return error. */
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filelen = -1 ;
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} ;
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return filelen ;
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} /* psf_get_filelen */
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int
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psf_close_rsrc (SF_PRIVATE *psf)
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{ psf_close_fd (psf->rsrc.filedes) ;
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psf->rsrc.filedes = -1 ;
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return 0 ;
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} /* psf_close_rsrc */
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int
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psf_set_stdio (SF_PRIVATE *psf)
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{ int error = 0 ;
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switch (psf->file.mode)
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{ case SFM_RDWR :
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error = SFE_OPEN_PIPE_RDWR ;
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break ;
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case SFM_READ :
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psf->file.filedes = 0 ;
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break ;
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case SFM_WRITE :
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psf->file.filedes = 1 ;
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break ;
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default :
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error = SFE_BAD_OPEN_MODE ;
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break ;
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} ;
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psf->filelength = 0 ;
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return error ;
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} /* psf_set_stdio */
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void
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psf_set_file (SF_PRIVATE *psf, int fd)
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{ psf->file.filedes = fd ;
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} /* psf_set_file */
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int
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psf_file_valid (SF_PRIVATE *psf)
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{ return (psf->file.filedes >= 0) ? SF_TRUE : SF_FALSE ;
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} /* psf_set_file */
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sf_count_t
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psf_fseek (SF_PRIVATE *psf, sf_count_t offset, int whence)
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{ sf_count_t current_pos, new_position ;
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if (psf->virtual_io)
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return psf->vio.seek (offset, whence, psf->vio_user_data) ;
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current_pos = psf_ftell (psf) ;
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switch (whence)
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{ case SEEK_SET :
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offset += psf->fileoffset ;
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break ;
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case SEEK_END :
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if (psf->file.mode == SFM_WRITE)
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{ new_position = lseek (psf->file.filedes, offset, whence) ;
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if (new_position < 0)
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psf_log_syserr (psf, errno) ;
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return new_position - psf->fileoffset ;
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} ;
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/* Transform SEEK_END into a SEEK_SET, ie find the file
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** length add the requested offset (should be <= 0) to
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** get the offset wrt the start of file.
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*/
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whence = SEEK_SET ;
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offset = lseek (psf->file.filedes, 0, SEEK_END) + offset ;
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break ;
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case SEEK_CUR :
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/* Translate a SEEK_CUR into a SEEK_SET. */
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offset += current_pos ;
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whence = SEEK_SET ;
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break ;
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default :
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/* We really should not be here. */
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psf_log_printf (psf, "psf_fseek : whence is %d *****.\n", whence) ;
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return 0 ;
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} ;
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if (current_pos != offset)
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new_position = lseek (psf->file.filedes, offset, whence) ;
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else
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new_position = offset ;
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if (new_position < 0)
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psf_log_syserr (psf, errno) ;
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new_position -= psf->fileoffset ;
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return new_position ;
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} /* psf_fseek */
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sf_count_t
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psf_fread (void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
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{ sf_count_t total = 0 ;
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ssize_t count ;
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if (psf->virtual_io)
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return psf->vio.read (ptr, bytes*items, psf->vio_user_data) / bytes ;
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items *= bytes ;
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/* Do this check after the multiplication above. */
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if (items <= 0)
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return 0 ;
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while (items > 0)
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{ /* Break the read down to a sensible size. */
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count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : (ssize_t) items ;
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count = read (psf->file.filedes, ((char*) ptr) + total, (size_t) count) ;
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if (count == -1)
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{ if (errno == EINTR)
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continue ;
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psf_log_syserr (psf, errno) ;
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break ;
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} ;
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if (count == 0)
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break ;
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total += count ;
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items -= count ;
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} ;
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if (psf->is_pipe)
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psf->pipeoffset += total ;
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return total / bytes ;
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} /* psf_fread */
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sf_count_t
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psf_fwrite (const void *ptr, sf_count_t bytes, sf_count_t items, SF_PRIVATE *psf)
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{ sf_count_t total = 0 ;
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ssize_t count ;
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if (psf->virtual_io)
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return psf->vio.write (ptr, bytes*items, psf->vio_user_data) / bytes ;
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items *= bytes ;
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/* Do this check after the multiplication above. */
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if (items <= 0)
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return 0 ;
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while (items > 0)
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{ /* Break the writes down to a sensible size. */
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count = (items > SENSIBLE_SIZE) ? SENSIBLE_SIZE : items ;
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count = write (psf->file.filedes, ((const char*) ptr) + total, count) ;
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if (count == -1)
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{ if (errno == EINTR)
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continue ;
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psf_log_syserr (psf, errno) ;
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break ;
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} ;
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if (count == 0)
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break ;
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total += count ;
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items -= count ;
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} ;
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if (psf->is_pipe)
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psf->pipeoffset += total ;
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return total / bytes ;
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} /* psf_fwrite */
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sf_count_t
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psf_ftell (SF_PRIVATE *psf)
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{ sf_count_t pos ;
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if (psf->virtual_io)
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return psf->vio.tell (psf->vio_user_data) ;
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if (psf->is_pipe)
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return psf->pipeoffset ;
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pos = lseek (psf->file.filedes, 0, SEEK_CUR) ;
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if (pos == ((sf_count_t) -1))
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{ psf_log_syserr (psf, errno) ;
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return -1 ;
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} ;
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return pos - psf->fileoffset ;
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} /* psf_ftell */
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static int
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psf_close_fd (int fd)
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{ int retval ;
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if (fd < 0)
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return 0 ;
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while ((retval = close (fd)) == -1 && errno == EINTR)
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/* Do nothing. */ ;
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return retval ;
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} /* psf_close_fd */
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sf_count_t
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psf_fgets (char *buffer, sf_count_t bufsize, SF_PRIVATE *psf)
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{ sf_count_t k = 0 ;
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sf_count_t count ;
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while (k < bufsize - 1)
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{ count = read (psf->file.filedes, &(buffer [k]), 1) ;
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if (count == -1)
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{ if (errno == EINTR)
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continue ;
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psf_log_syserr (psf, errno) ;
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break ;
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} ;
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if (count == 0 || buffer [k++] == '\n')
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break ;
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} ;
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buffer [k] = 0 ;
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return k ;
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} /* psf_fgets */
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int
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psf_is_pipe (SF_PRIVATE *psf)
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{ struct stat statbuf ;
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if (psf->virtual_io)
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return SF_FALSE ;
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if (fstat (psf->file.filedes, &statbuf) == -1)
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{ psf_log_syserr (psf, errno) ;
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/* Default to maximum safety. */
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return SF_TRUE ;
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} ;
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if (S_ISFIFO (statbuf.st_mode) || S_ISSOCK (statbuf.st_mode))
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return SF_TRUE ;
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return SF_FALSE ;
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} /* psf_is_pipe */
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static sf_count_t
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psf_get_filelen_fd (int fd)
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{
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#if (SIZEOF_OFF_T == 4 && SIZEOF_SF_COUNT_T == 8 && HAVE_FSTAT64)
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struct stat64 statbuf ;
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if (fstat64 (fd, &statbuf) == -1)
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return (sf_count_t) -1 ;
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return statbuf.st_size ;
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#else
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struct stat statbuf ;
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if (fstat (fd, &statbuf) == -1)
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return (sf_count_t) -1 ;
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return statbuf.st_size ;
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#endif
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} /* psf_get_filelen_fd */
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int
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psf_ftruncate (SF_PRIVATE *psf, sf_count_t len)
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{ int retval ;
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/* Returns 0 on success, non-zero on failure. */
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if (len < 0)
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return -1 ;
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if ((sizeof (off_t) < sizeof (sf_count_t)) && len > 0x7FFFFFFF)
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return -1 ;
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retval = ftruncate (psf->file.filedes, len) ;
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if (retval == -1)
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psf_log_syserr (psf, errno) ;
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return retval ;
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} /* psf_ftruncate */
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void
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psf_init_files (SF_PRIVATE *psf)
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{ psf->file.filedes = -1 ;
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psf->rsrc.filedes = -1 ;
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psf->file.savedes = -1 ;
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} /* psf_init_files */
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void
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psf_use_rsrc (SF_PRIVATE *psf, int on_off)
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{
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if (on_off)
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{ if (psf->file.filedes != psf->rsrc.filedes)
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{ psf->file.savedes = psf->file.filedes ;
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psf->file.filedes = psf->rsrc.filedes ;
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} ;
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}
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else if (psf->file.filedes == psf->rsrc.filedes)
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psf->file.filedes = psf->file.savedes ;
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return ;
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} /* psf_use_rsrc */
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static int
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psf_open_fd (PSF_FILE * pfile)
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|
{ int fd, oflag, mode ;
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|
|
/*
|
|
** 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 (sf_count_t) != 8)
|
|
{ puts ("\n\n*** Fatal error : sizeof (sf_count_t) != 8") ;
|
|
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
|
|
|