| 1 | /* $Header$ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1988-1997 Sam Leffler |
| 5 | * Copyright (c) 1991-1997 Silicon Graphics, Inc. |
| 6 | * |
| 7 | * Permission to use, copy, modify, distribute, and sell this software and |
| 8 | * its documentation for any purpose is hereby granted without fee, provided |
| 9 | * that (i) the above copyright notices and this permission notice appear in |
| 10 | * all copies of the software and related documentation, and (ii) the names of |
| 11 | * Sam Leffler and Silicon Graphics may not be used in any advertising or |
| 12 | * publicity relating to the software without the specific, prior written |
| 13 | * permission of Sam Leffler and Silicon Graphics. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
| 17 | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
| 18 | * |
| 19 | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
| 20 | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
| 21 | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| 22 | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
| 23 | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 24 | * OF THIS SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | /* |
| 28 | * TIFF Library UNIX-specific Routines. |
| 29 | */ |
| 30 | #include "tiffiop.h" |
| 31 | #include <sys/types.h> |
| 32 | #include <unistd.h> |
| 33 | #include <stdlib.h> |
| 34 | |
| 35 | static tsize_t |
| 36 | _tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size) |
| 37 | { |
| 38 | return ((tsize_t) read((int) fd, buf, (size_t) size)); |
| 39 | } |
| 40 | |
| 41 | static tsize_t |
| 42 | _tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size) |
| 43 | { |
| 44 | return ((tsize_t) write((int) fd, buf, (size_t) size)); |
| 45 | } |
| 46 | |
| 47 | static toff_t |
| 48 | _tiffSeekProc(thandle_t fd, toff_t off, int whence) |
| 49 | { |
| 50 | return ((toff_t) lseek((int) fd, (off_t) off, whence)); |
| 51 | } |
| 52 | |
| 53 | static int |
| 54 | _tiffCloseProc(thandle_t fd) |
| 55 | { |
| 56 | return (close((int) fd)); |
| 57 | } |
| 58 | |
| 59 | #include <sys/stat.h> |
| 60 | |
| 61 | static toff_t |
| 62 | _tiffSizeProc(thandle_t fd) |
| 63 | { |
| 64 | #ifdef _AM29K |
| 65 | long fsize; |
| 66 | return ((fsize = lseek((int) fd, 0, SEEK_END)) < 0 ? 0 : fsize); |
| 67 | #else |
| 68 | struct stat sb; |
| 69 | return (toff_t) (fstat((int) fd, &sb) < 0 ? 0 : sb.st_size); |
| 70 | #endif |
| 71 | } |
| 72 | |
| 73 | #ifdef HAVE_MMAP |
| 74 | #include <sys/mman.h> |
| 75 | |
| 76 | static int |
| 77 | _tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize) |
| 78 | { |
| 79 | toff_t size = _tiffSizeProc(fd); |
| 80 | if (size != (toff_t) -1) { |
| 81 | *pbase = (tdata_t) |
| 82 | mmap(0, size, PROT_READ, MAP_SHARED, (int) fd, 0); |
| 83 | if (*pbase != (tdata_t) -1) { |
| 84 | *psize = size; |
| 85 | return (1); |
| 86 | } |
| 87 | } |
| 88 | return (0); |
| 89 | } |
| 90 | |
| 91 | static void |
| 92 | _tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size) |
| 93 | { |
| 94 | (void) fd; |
| 95 | (void) munmap(base, (off_t) size); |
| 96 | } |
| 97 | #else /* !HAVE_MMAP */ |
| 98 | static int |
| 99 | _tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize) |
| 100 | { |
| 101 | (void) fd; (void) pbase; (void) psize; |
| 102 | return (0); |
| 103 | } |
| 104 | |
| 105 | static void |
| 106 | _tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size) |
| 107 | { |
| 108 | (void) fd; (void) base; (void) size; |
| 109 | } |
| 110 | #endif /* !HAVE_MMAP */ |
| 111 | |
| 112 | /* |
| 113 | * Open a TIFF file descriptor for read/writing. |
| 114 | */ |
| 115 | TIFF* |
| 116 | TIFFFdOpen(int fd, const char* name, const char* mode) |
| 117 | { |
| 118 | TIFF* tif; |
| 119 | |
| 120 | tif = TIFFClientOpen(name, mode, |
| 121 | (thandle_t) fd, |
| 122 | _tiffReadProc, _tiffWriteProc, |
| 123 | _tiffSeekProc, _tiffCloseProc, _tiffSizeProc, |
| 124 | _tiffMapProc, _tiffUnmapProc); |
| 125 | if (tif) |
| 126 | tif->tif_fd = fd; |
| 127 | return (tif); |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Open a TIFF file for read/writing. |
| 132 | */ |
| 133 | TIFF* |
| 134 | TIFFOpen(const char* name, const char* mode) |
| 135 | { |
| 136 | static const char module[] = "TIFFOpen"; |
| 137 | int m, fd; |
| 138 | |
| 139 | m = _TIFFgetMode(mode, module); |
| 140 | if (m == -1) |
| 141 | return ((TIFF*)0); |
| 142 | |
| 143 | /* for cygwin */ |
| 144 | #ifdef O_BINARY |
| 145 | m |= O_BINARY; |
| 146 | #endif |
| 147 | |
| 148 | #ifdef _AM29K |
| 149 | fd = open(name, m); |
| 150 | #else |
| 151 | fd = open(name, m, 0666); |
| 152 | #endif |
| 153 | if (fd < 0) { |
| 154 | TIFFError(module, "%s: Cannot open", name); |
| 155 | return ((TIFF *)0); |
| 156 | } |
| 157 | return (TIFFFdOpen(fd, name, mode)); |
| 158 | } |
| 159 | |
| 160 | void* |
| 161 | _TIFFmalloc(tsize_t s) |
| 162 | { |
| 163 | return (malloc((size_t) s)); |
| 164 | } |
| 165 | |
| 166 | void |
| 167 | _TIFFfree(tdata_t p) |
| 168 | { |
| 169 | free(p); |
| 170 | } |
| 171 | |
| 172 | void* |
| 173 | _TIFFrealloc(tdata_t p, tsize_t s) |
| 174 | { |
| 175 | return (realloc(p, (size_t) s)); |
| 176 | } |
| 177 | |
| 178 | void |
| 179 | _TIFFmemset(tdata_t p, int v, tsize_t c) |
| 180 | { |
| 181 | memset(p, v, (size_t) c); |
| 182 | } |
| 183 | |
| 184 | void |
| 185 | _TIFFmemcpy(tdata_t d, const tdata_t s, tsize_t c) |
| 186 | { |
| 187 | memcpy(d, s, (size_t) c); |
| 188 | } |
| 189 | |
| 190 | int |
| 191 | _TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c) |
| 192 | { |
| 193 | return (memcmp(p1, p2, (size_t) c)); |
| 194 | } |
| 195 | |
| 196 | static void |
| 197 | unixWarningHandler(const char* module, const char* fmt, va_list ap) |
| 198 | { |
| 199 | if (module != NULL) |
| 200 | fprintf(stderr, "%s: ", module); |
| 201 | fprintf(stderr, "Warning, "); |
| 202 | vfprintf(stderr, fmt, ap); |
| 203 | fprintf(stderr, ".\n"); |
| 204 | } |
| 205 | TIFFErrorHandler _TIFFwarningHandler = unixWarningHandler; |
| 206 | |
| 207 | static void |
| 208 | unixErrorHandler(const char* module, const char* fmt, va_list ap) |
| 209 | { |
| 210 | if (module != NULL) |
| 211 | fprintf(stderr, "%s: ", module); |
| 212 | vfprintf(stderr, fmt, ap); |
| 213 | fprintf(stderr, ".\n"); |
| 214 | } |
| 215 | TIFFErrorHandler _TIFFerrorHandler = unixErrorHandler; |