This is tif_unix.c in view mode; [Download] [Up]
#ifndef lint
static char rcsid[] = "$Header: /usr/people/sam/tiff/libtiff/RCS/tif_unix.c,v 1.6 93/08/25 09:34:24 sam Exp $";
#endif
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
* Copyright (c) 1991, 1992 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* TIFF Library UNIX-specific Routines.
*/
#include "tiffiop.h"
#include <unistd.h>
#include <stdlib.h>
static tsize_t
_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
{
return (read((int) fd, buf, (size_t) size));
}
static tsize_t
_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
{
return (write((int) fd, buf, (size_t) size));
}
static toff_t
_tiffSeekProc(thandle_t fd, off_t off, int whence)
{
return ((toff_t) lseek((int) fd, (off_t) off, whence));
}
static int
_tiffCloseProc(thandle_t fd)
{
return (close((int) fd));
}
#include <sys/stat.h>
static toff_t
_tiffSizeProc(thandle_t fd)
{
#ifdef _AM29K
long fsize;
return ((fsize = lseek((int) fd, 0, SEEK_END)) < 0 ? 0 : fsize);
#else
struct stat sb;
return (toff_t) (fstat((int) fd, &sb) < 0 ? 0 : sb.st_size);
#endif
}
#ifdef MMAP_SUPPORT
#include <sys/mman.h>
static int
_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
toff_t size = _tiffSizeProc(fd);
if (size != (toff_t) -1) {
*pbase = (tdata_t)
mmap(0, size, PROT_READ, MAP_SHARED, (int) fd, 0);
if (*pbase != (tdata_t) -1) {
*psize = size;
return (1);
}
}
return (0);
}
static void
_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
{
(void) munmap(base, (off_t) size);
}
#else /* !MMAP_SUPPORT */
static int
_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
return (0);
}
static void
_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
{
}
#endif /* !MMAP_SUPPORT */
/*
* Open a TIFF file descriptor for read/writing.
*/
TIFF*
TIFFFdOpen(int fd, const char* name, const char* mode)
{
TIFF* tif;
tif = TIFFClientOpen(name, mode,
(thandle_t) fd,
_tiffReadProc, _tiffWriteProc,
_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
_tiffMapProc, _tiffUnmapProc);
if (tif)
tif->tif_fd = fd;
return (tif);
}
/*
* Open a TIFF file for read/writing.
*/
TIFF*
TIFFOpen(const char* name, const char* mode)
{
static const char module[] = "TIFFOpen";
int m, fd;
m = _TIFFgetMode(mode, module);
if (m == -1)
return ((TIFF*)0);
#ifdef _AM29K
fd = open(name, m);
#else
fd = open(name, m, 0666);
#endif
if (fd < 0) {
TIFFError(module, "%s: Cannot open", name);
return ((TIFF *)0);
}
return (TIFFFdOpen(fd, name, mode));
}
void*
_TIFFmalloc(size_t s)
{
return (malloc(s));
}
void
_TIFFfree(void* p)
{
free(p);
}
void*
_TIFFrealloc(void* p, size_t s)
{
return (realloc(p, s));
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.