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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; |