379 lines
8.0 KiB
C
379 lines
8.0 KiB
C
/* $Id: tif_unix.c,v 1.27 2015-08-19 02:31:04 bfriesen Exp $ */
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/*
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* Copyright (c) 1988-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* TIFF Library UNIX-specific Routines. These are should also work with the
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* Windows Common RunTime Library.
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*/
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#include "tif_config.h"
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <errno.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#endif
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#ifdef HAVE_IO_H
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# include <io.h>
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#endif
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#include "tiffiop.h"
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#define TIFF_IO_MAX 2147483647U
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typedef union fd_as_handle_union
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{
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int fd;
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thandle_t h;
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} fd_as_handle_union_t;
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static tmsize_t
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_tiffReadProc(thandle_t fd, void* buf, tmsize_t size)
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{
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fd_as_handle_union_t fdh;
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const size_t bytes_total = (size_t) size;
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size_t bytes_read;
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tmsize_t count = -1;
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if ((tmsize_t) bytes_total != size)
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{
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errno=EINVAL;
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return (tmsize_t) -1;
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}
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fdh.h = fd;
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for (bytes_read=0; bytes_read < bytes_total; bytes_read+=count)
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{
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char *buf_offset = (char *) buf+bytes_read;
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size_t io_size = bytes_total-bytes_read;
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if (io_size > TIFF_IO_MAX)
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io_size = TIFF_IO_MAX;
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count=read(fdh.fd, buf_offset, (TIFFIOSize_t) io_size);
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if (count <= 0)
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break;
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}
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if (count < 0)
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return (tmsize_t)-1;
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return (tmsize_t) bytes_read;
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}
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static tmsize_t
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_tiffWriteProc(thandle_t fd, void* buf, tmsize_t size)
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{
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fd_as_handle_union_t fdh;
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const size_t bytes_total = (size_t) size;
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size_t bytes_written;
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tmsize_t count = -1;
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if ((tmsize_t) bytes_total != size)
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{
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errno=EINVAL;
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return (tmsize_t) -1;
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}
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fdh.h = fd;
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for (bytes_written=0; bytes_written < bytes_total; bytes_written+=count)
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{
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const char *buf_offset = (char *) buf+bytes_written;
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size_t io_size = bytes_total-bytes_written;
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if (io_size > TIFF_IO_MAX)
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io_size = TIFF_IO_MAX;
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count=write(fdh.fd, buf_offset, (TIFFIOSize_t) io_size);
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if (count <= 0)
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break;
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}
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if (count < 0)
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return (tmsize_t)-1;
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return (tmsize_t) bytes_written;
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/* return ((tmsize_t) write(fdh.fd, buf, bytes_total)); */
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}
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static uint64
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_tiffSeekProc(thandle_t fd, uint64 off, int whence)
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{
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fd_as_handle_union_t fdh;
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_TIFF_off_t off_io = (_TIFF_off_t) off;
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if ((uint64) off_io != off)
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{
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errno=EINVAL;
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return (uint64) -1; /* this is really gross */
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}
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fdh.h = fd;
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return((uint64)_TIFF_lseek_f(fdh.fd,off_io,whence));
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}
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static int
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_tiffCloseProc(thandle_t fd)
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{
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fd_as_handle_union_t fdh;
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fdh.h = fd;
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return(close(fdh.fd));
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}
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static uint64
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_tiffSizeProc(thandle_t fd)
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{
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_TIFF_stat_s sb;
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fd_as_handle_union_t fdh;
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fdh.h = fd;
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if (_TIFF_fstat_f(fdh.fd,&sb)<0)
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return(0);
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else
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return((uint64)sb.st_size);
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}
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#ifdef HAVE_MMAP
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#include <sys/mman.h>
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static int
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_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
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{
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uint64 size64 = _tiffSizeProc(fd);
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tmsize_t sizem = (tmsize_t)size64;
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if ((uint64)sizem==size64) {
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fd_as_handle_union_t fdh;
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fdh.h = fd;
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*pbase = (void*)
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mmap(0, (size_t)sizem, PROT_READ, MAP_SHARED, fdh.fd, 0);
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if (*pbase != (void*) -1) {
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*psize = (tmsize_t)sizem;
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return (1);
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}
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}
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return (0);
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}
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static void
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_tiffUnmapProc(thandle_t fd, void* base, toff_t size)
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{
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(void) fd;
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(void) munmap(base, (off_t) size);
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}
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#else /* !HAVE_MMAP */
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static int
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_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
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{
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(void) fd; (void) pbase; (void) psize;
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return (0);
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}
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static void
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_tiffUnmapProc(thandle_t fd, void* base, toff_t size)
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{
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(void) fd; (void) base; (void) size;
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}
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#endif /* !HAVE_MMAP */
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/*
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* Open a TIFF file descriptor for read/writing.
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*/
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TIFF*
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TIFFFdOpen(int fd, const char* name, const char* mode)
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{
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TIFF* tif;
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fd_as_handle_union_t fdh;
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fdh.fd = fd;
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tif = TIFFClientOpen(name, mode,
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fdh.h,
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_tiffReadProc, _tiffWriteProc,
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_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
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_tiffMapProc, _tiffUnmapProc);
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if (tif)
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tif->tif_fd = fd;
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return (tif);
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}
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/*
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* Open a TIFF file for read/writing.
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*/
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TIFF*
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TIFFOpen(const char* name, const char* mode)
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{
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static const char module[] = "TIFFOpen";
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int m, fd;
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TIFF* tif;
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m = _TIFFgetMode(mode, module);
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if (m == -1)
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return ((TIFF*)0);
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/* for cygwin and mingw */
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#ifdef O_BINARY
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m |= O_BINARY;
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#endif
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fd = open(name, m, 0666);
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if (fd < 0) {
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if (errno > 0 && strerror(errno) != NULL ) {
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TIFFErrorExt(0, module, "%s: %s", name, strerror(errno) );
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} else {
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TIFFErrorExt(0, module, "%s: Cannot open", name);
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}
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return ((TIFF *)0);
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}
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tif = TIFFFdOpen((int)fd, name, mode);
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if(!tif)
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close(fd);
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return tif;
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}
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#ifdef __WIN32__
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#include <windows.h>
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/*
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* Open a TIFF file with a Unicode filename, for read/writing.
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*/
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TIFF*
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TIFFOpenW(const wchar_t* name, const char* mode)
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{
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static const char module[] = "TIFFOpenW";
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int m, fd;
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int mbsize;
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char *mbname;
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TIFF* tif;
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m = _TIFFgetMode(mode, module);
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if (m == -1)
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return ((TIFF*)0);
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/* for cygwin and mingw */
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#ifdef O_BINARY
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m |= O_BINARY;
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#endif
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fd = _wopen(name, m, 0666);
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if (fd < 0) {
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TIFFErrorExt(0, module, "%ls: Cannot open", name);
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return ((TIFF *)0);
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}
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mbname = NULL;
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mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
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if (mbsize > 0) {
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mbname = _TIFFmalloc(mbsize);
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if (!mbname) {
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TIFFErrorExt(0, module,
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"Can't allocate space for filename conversion buffer");
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return ((TIFF*)0);
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}
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WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,
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NULL, NULL);
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}
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tif = TIFFFdOpen((int)fd, (mbname != NULL) ? mbname : "<unknown>",
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mode);
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_TIFFfree(mbname);
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if(!tif)
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close(fd);
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return tif;
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}
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#endif
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void*
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_TIFFmalloc(tmsize_t s)
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{
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if (s == 0)
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return ((void *) NULL);
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return (malloc((size_t) s));
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}
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void
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_TIFFfree(void* p)
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{
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free(p);
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}
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void*
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_TIFFrealloc(void* p, tmsize_t s)
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{
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return (realloc(p, (size_t) s));
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}
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void
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_TIFFmemset(void* p, int v, tmsize_t c)
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{
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memset(p, v, (size_t) c);
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}
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void
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_TIFFmemcpy(void* d, const void* s, tmsize_t c)
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{
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memcpy(d, s, (size_t) c);
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}
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int
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_TIFFmemcmp(const void* p1, const void* p2, tmsize_t c)
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{
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return (memcmp(p1, p2, (size_t) c));
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}
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static void
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unixWarningHandler(const char* module, const char* fmt, va_list ap)
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{
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if (module != NULL)
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fprintf(stderr, "%s: ", module);
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fprintf(stderr, "Warning, ");
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, ".\n");
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}
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TIFFErrorHandler _TIFFwarningHandler = unixWarningHandler;
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static void
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unixErrorHandler(const char* module, const char* fmt, va_list ap)
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{
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if (module != NULL)
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fprintf(stderr, "%s: ", module);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, ".\n");
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}
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TIFFErrorHandler _TIFFerrorHandler = unixErrorHandler;
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/* vim: set ts=8 sts=8 sw=8 noet: */
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 8
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* fill-column: 78
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* End:
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*/
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