2 * $Id: adouble.h,v 1.16 2003-01-26 16:40:45 srittau Exp $
3 * Copyright (c) 1990,1991 Regents of The University of Michigan.
6 * Permission to use, copy, modify, and distribute this software and
7 * its documentation for any purpose and without fee is hereby granted,
8 * provided that the above copyright notice appears in all copies and
9 * that both that copyright notice and this permission notice appear
10 * in supporting documentation, and that the name of The University
11 * of Michigan not be used in advertising or publicity pertaining to
12 * distribution of the software without specific, written prior
13 * permission. This software is supplied as is without expressed or
14 * implied warranties of any kind.
16 * Research Systems Unix Group
17 * The University of Michigan
19 * 535 W. William Street
22 * netatalk@itd.umich.edu
25 #ifndef _ATALK_ADOUBLE_H
26 #define _ATALK_ADOUBLE_H
32 /* -------------------
33 * need pread() and pwrite()
52 #define _XOPEN_SOURCE 500
64 #include <sys/cdefs.h>
65 #include <sys/types.h>
68 #include <netatalk/endian.h>
70 /* XXX: this is the wrong place to put this.
71 * NOTE: as of 2.2.1, linux can't do a sendfile from a socket.
72 * and it doesn't have 64 bits sendfile
74 #ifdef SENDFILE_FLAVOR_LINUX
76 #if _FILE_OFFSET_BITS == 64
78 #undef SENDFILE_FLAVOR_LINUX
80 #else /* _FILE_OFFSET_BITS != 64 */
82 #define HAVE_SENDFILE_READ
83 #define HAVE_SENDFILE_WRITE
84 #include <asm/unistd.h>
88 extern int sendfile __P((int , int , off_t *, size_t ));
90 static __inline__ int sendfile(int fdout, int fdin, off_t *off, size_t count)
92 return syscall(__NR_sendfile, fdout, fdin, off, count);
96 #else /* !__NR_sendfile */
97 #include <sys/sendfile.h>
98 #endif /* __NR_sendfile */
99 #endif /* _FILE_OFFSET_BITS */
100 #endif /* SENDFILE_FLAVOR_LINUX */
102 #ifdef SENDFILE_FLAVOR_BSD
103 #define HAVE_SENDFILE_READ
107 * AppleDouble entry IDs.
109 #define ADEID_DFORK 1
110 #define ADEID_RFORK 2
112 #define ADEID_COMMENT 4
113 #define ADEID_ICONBW 5
114 #define ADEID_ICONCOL 6
115 #define ADEID_FILEI 7 /* v1, replaced by: */
116 #define ADEID_FILEDATESI 8 /* this */
117 #define ADEID_FINDERI 9
118 #define ADEID_MACFILEI 10 /* we don't use this */
119 #define ADEID_PRODOSFILEI 11 /* we store prodos info here */
120 #define ADEID_MSDOSFILEI 12 /* we don't use this */
121 #define ADEID_SHORTNAME 13
122 #define ADEID_AFPFILEI 14 /* where the rest of the FILEI info goes */
128 #define AD_APPLESINGLE_MAGIC 0x00051600
129 #define AD_APPLEDOUBLE_MAGIC 0x00051607
130 #define AD_MAGIC AD_APPLEDOUBLE_MAGIC
133 #define AD_VERSION1 0x00010000
134 #define AD_VERSION2 0x00020000
135 #define AD_VERSION AD_VERSION1
137 /* sizes of relevant entry bits */
138 #define ADEDLEN_MAGIC 4
139 #define ADEDLEN_VERSION 4
140 #define ADEDLEN_FILLER 16
141 #define ADEDLEN_NENTRIES 2
143 #define AD_HEADER_LEN (ADEDLEN_MAGIC + ADEDLEN_VERSION + \
144 ADEDLEN_FILLER + ADEDLEN_NENTRIES)
145 #define AD_ENTRY_LEN 12 /* size of a single entry header */
147 /* v1 field widths */
148 #define ADEDLEN_NAME 255
149 #define ADEDLEN_COMMENT 200
150 #define ADEDLEN_FILEI 16
151 #define ADEDLEN_FINDERI 32
153 /* v2 field widths */
154 #define ADEDLEN_FILEDATESI 16
155 #define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */
156 #define ADEDLEN_AFPFILEI 4
157 #define ADEDLEN_MACFILEI 4
158 #define ADEDLEN_PRODOSFILEI 8
159 #define ADEDLEN_MSDOSFILEI 2
160 #define ADEDLEN_DID 4
163 #define AD_DATASZ1 589
164 #define AD_DATASZ2 665 /* v1 + 4 new entries (entry desc. + entry) */
165 #define AD_DATASZ_MAX 1024
166 #if AD_VERSION == AD_VERSION1
167 #define AD_DATASZ AD_DATASZ1 /* hold enough for the entries */
168 #elif AD_VERSION == AD_VERSION2
169 #define AD_DATASZ AD_DATASZ2
173 * some legacy defines from netatalk-990130
174 * (to keep from breaking certain packages)
178 #define ADEDOFF_RFORK 589
179 #define ADEDOFF_NAME 86
180 #define ADEDOFF_COMMENT 341
181 #define ADEDOFF_FINDERI 557
182 #ifndef ADEDOFF_FILEI
183 #define ADEDOFF_FILEI 541
187 * The header of the AppleDouble Header File looks like this:
193 * Home File System 16 (this becomes filler in ad v2)
194 * Number of Entries 2
195 * Entry Descriptors for each entry:
206 typedef struct adf_lock_t {
209 int *refcount; /* handle read locks with multiple users */
220 adf_lock_t *adf_lock;
221 int adf_refcount, adf_lockcount, adf_lockmax;
224 /* some header protection */
225 #define AD_INITED 0xad494e54 /* ad"INT" */
228 u_int32_t ad_version;
229 char ad_filler[ 16 ];
230 struct ad_entry ad_eid[ ADEID_MAX ];
231 struct ad_fd ad_df, ad_hf;
232 int ad_flags, ad_inited;
233 int ad_refcount; /* used in afpd/ofork.c */
234 off_t ad_rlen; /* ressource fork len with AFP 3.0
235 the header parameter size is too small.
237 #ifdef USE_MMAPPED_HEADERS
240 char ad_data[AD_DATASZ_MAX];
244 #define ADFLAGS_DF (1<<0)
245 #define ADFLAGS_HF (1<<1)
246 #define ADFLAGS_DIR (1<<2)
247 #define ADFLAGS_NOADOUBLE (1<<3)
248 #define ADFLAGS_V1COMPAT (1<<4)
251 #define ADLOCK_CLR (0)
252 #define ADLOCK_RD (1<<0)
253 #define ADLOCK_WR (1<<1)
254 #define ADLOCK_MASK (ADLOCK_RD | ADLOCK_WR)
255 #define ADLOCK_UPGRADE (1<<2)
256 #define ADLOCK_FILELOCK (1<<3)
258 /* we use this so that we can use the same mechanism for both byte
259 * locks and file synchronization locks. i do this by co-opting either
260 * first bits on 32-bit machines or shifting above the last bit on
261 * 64-bit machines. this only matters for the data fork. */
262 #if defined(TRY_64BITOFF_T) && (~0UL > 0xFFFFFFFFU)
263 /* synchronization locks */
264 #define AD_FILELOCK_BASE (0x80000000)
266 #define AD_FILELOCK_BASE (0x7FFFFFFF -9)
270 * AD_FILELOCK_BASE case
272 #if _FILE_OFFSET_BITS == 64
273 #define BYTELOCK_MAX (0x7FFFFFFFFFFFFFFFULL)
275 #define BYTELOCK_MAX (0x7FFFFFFFU)
278 #define AD_FILELOCK_OPEN_WR (AD_FILELOCK_BASE + 0)
279 #define AD_FILELOCK_OPEN_RD (AD_FILELOCK_BASE + 1)
280 #define AD_FILELOCK_DENY_WR (AD_FILELOCK_BASE + 2)
281 #define AD_FILELOCK_DENY_RD (AD_FILELOCK_BASE + 3)
282 #define AD_FILELOCK_OPEN_NONE (AD_FILELOCK_BASE + 4)
284 /* time stuff. we overload the bits a little. */
285 #define AD_DATE_CREATE 0
286 #define AD_DATE_MODIFY 4
287 #define AD_DATE_BACKUP 8
288 #define AD_DATE_ACCESS 12
289 #define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \
290 AD_DATE_BACKUP | AD_DATE_ACCESS)
291 #define AD_DATE_UNIX (1 << 10)
292 #define AD_DATE_START htonl(0x80000000)
293 #define AD_DATE_DELTA 946684800
294 #define AD_DATE_FROM_UNIX(x) htonl((x) - AD_DATE_DELTA)
295 #define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA)
297 /* private AFPFileInfo bits */
298 #define AD_AFPFILEI_OWNER (1 << 0) /* any owner */
299 #define AD_AFPFILEI_GROUP (1 << 1) /* ignore group */
300 #define AD_AFPFILEI_BLANKACCESS (1 << 2) /* blank access permissions */
302 #define ad_dfileno(ad) ((ad)->ad_df.adf_fd)
303 #define ad_hfileno(ad) ((ad)->ad_hf.adf_fd)
304 #define ad_getversion(ad) ((ad)->ad_version)
306 #define ad_getentrylen(ad,eid) ((ad)->ad_eid[(eid)].ade_len)
307 #define ad_setentrylen(ad,eid,len) \
308 ((ad)->ad_eid[(eid)].ade_len = (len))
309 #define ad_getentryoff(ad,eid) ((ad)->ad_eid[(eid)].ade_off)
310 #define ad_entry(ad,eid) ((caddr_t)(ad)->ad_data + \
311 (ad)->ad_eid[(eid)].ade_off)
312 #define ad_getoflags(ad,adf) (((adf)&ADFLAGS_HF) ? \
313 (ad)->ad_hf.adf_flags : (ad)->ad_df.adf_flags)
316 extern void ad_rebuild_header __P((struct adouble *));
317 extern int ad_flush __P((struct adouble *, int));
318 extern int ad_close __P((struct adouble *, int));
321 extern int ad_fcntl_lock __P((struct adouble *, const u_int32_t /*eid*/,
322 const int /*type*/, const off_t /*offset*/,
323 const off_t /*len*/, const int /*user*/));
324 extern void ad_fcntl_unlock __P((struct adouble *, const int /*user*/));
326 extern int ad_fcntl_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
327 const int /*type*/, const off_t /*offset*/,
328 const off_t /*len*/, const int /*user*/));
330 #define ad_lock ad_fcntl_lock
331 #define ad_tmplock ad_fcntl_tmplock
332 #define ad_unlock ad_fcntl_unlock
335 extern int ad_setfuid __P((const uid_t ));
336 extern uid_t ad_getfuid __P((void ));
338 extern char *ad_dir __P((const char *));
339 extern char *ad_path __P((const char *, int));
340 extern int ad_mode __P((const char *, int));
341 extern int ad_mkdir __P((const char *, int));
342 extern int ad_open __P((const char *, int, int, int, struct adouble *));
343 extern int ad_refresh __P((struct adouble *));
345 /* extend header to RW if R or W (W if R for locking),
348 static __inline__ mode_t ad_hf_mode (mode_t mode)
350 /* fnctl lock need write access */
351 if ((mode & S_IRUSR))
353 if ((mode & S_IRGRP))
355 if ((mode & S_IROTH))
358 /* if write mode set add read mode */
359 if ((mode & S_IWUSR))
361 if ((mode & S_IWGRP))
363 if ((mode & S_IWOTH))
369 extern mode_t ad_hf_mode __P((mode_t ));
372 /* ad_read.c/ad_write.c */
373 extern ssize_t ad_read __P((struct adouble *, const u_int32_t,
374 const off_t, char *, const size_t));
375 extern ssize_t ad_pread __P((struct ad_fd *, void *, size_t, off_t));
377 extern ssize_t ad_write __P((struct adouble *, const u_int32_t, off_t,
378 const int, const char *, const size_t));
380 extern ssize_t adf_pread __P((struct ad_fd *, void *, size_t, off_t));
381 extern ssize_t adf_pwrite __P((struct ad_fd *, const void *, size_t, off_t));
383 extern int ad_dtruncate __P((struct adouble *, const off_t));
384 extern int ad_rtruncate __P((struct adouble *, const off_t));
387 extern off_t ad_size __P((const struct adouble *, const u_int32_t ));
390 extern void *ad_mmapread __P((struct adouble *, const u_int32_t,
391 const off_t, const size_t));
392 extern void *ad_mmapwrite __P((struct adouble *, const u_int32_t,
393 const off_t, const int, const size_t));
394 #define ad_munmap(buf, len) (munmap((buf), (len)))
397 extern int ad_setdate __P((const struct adouble *, unsigned int, u_int32_t));
398 extern int ad_getdate __P((const struct adouble *, unsigned int, u_int32_t *));
401 extern int ad_setattr __P((const struct adouble *, const u_int16_t));
402 extern int ad_getattr __P((const struct adouble *, u_int16_t *));
404 #ifdef HAVE_SENDFILE_READ
405 extern ssize_t ad_readfile __P((const struct adouble *, const int,
406 const int, off_t, const size_t));
410 #ifdef HAVE_SENDFILE_WRITE
411 extern ssize_t ad_writefile __P((struct adouble *, const int,
412 const int, off_t, const int, const size_t));