2 * $Id: adouble.h,v 1.11 2002-10-11 14:18:35 didg 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
28 /* -------------------
29 * need pread() and pwrite()
48 #define _XOPEN_SOURCE 500
62 extern int flock (int /*fd*/, int /*operation*/);
69 #include <sys/cdefs.h>
70 #include <sys/types.h>
73 #include <netatalk/endian.h>
75 /* XXX: this is the wrong place to put this.
76 * NOTE: as of 2.2.1, linux can't do a sendfile from a socket.
77 * and it doesn't have 64 bits sendfile
79 #ifdef SENDFILE_FLAVOR_LINUX
81 #if _FILE_OFFSET_BITS == 64
83 #undef SENDFILE_FLAVOR_LINUX
86 #define HAVE_SENDFILE_READ
87 #define HAVE_SENDFILE_WRITE
88 #include <asm/unistd.h>
92 static __inline__ int sendfile(int fdout, int fdin, off_t *off, size_t count)
94 #if _FILE_OFFSET_BITS == 64
95 return syscall(__NR_sendfile64, fdout, fdin, off, count);
97 return syscall(__NR_sendfile, fdout, fdin, off, count);
101 extern int sendfile __P((int , int , off_t *, size_t ));
105 #include <sys/sendfile.h>
108 #endif /* SENDFILE_FLAVOR_LINUX */
110 #ifdef SENDFILE_FLAVOR_BSD
111 #define HAVE_SENDFILE_READ
115 * AppleDouble entry IDs.
117 #define ADEID_DFORK 1
118 #define ADEID_RFORK 2
120 #define ADEID_COMMENT 4
121 #define ADEID_ICONBW 5
122 #define ADEID_ICONCOL 6
123 #define ADEID_FILEI 7 /* v1, replaced by: */
124 #define ADEID_FILEDATESI 8 /* this */
125 #define ADEID_FINDERI 9
126 #define ADEID_MACFILEI 10 /* we don't use this */
127 #define ADEID_PRODOSFILEI 11 /* we store prodos info here */
128 #define ADEID_MSDOSFILEI 12 /* we don't use this */
129 #define ADEID_SHORTNAME 13
130 #define ADEID_AFPFILEI 14 /* where the rest of the FILEI info goes */
136 #define AD_APPLESINGLE_MAGIC 0x00051600
137 #define AD_APPLEDOUBLE_MAGIC 0x00051607
138 #define AD_MAGIC AD_APPLEDOUBLE_MAGIC
141 #define AD_VERSION1 0x00010000
142 #define AD_VERSION2 0x00020000
143 #define AD_VERSION AD_VERSION1
145 /* sizes of relevant entry bits */
146 #define ADEDLEN_MAGIC 4
147 #define ADEDLEN_VERSION 4
148 #define ADEDLEN_FILLER 16
149 #define ADEDLEN_NENTRIES 2
151 #define AD_HEADER_LEN (ADEDLEN_MAGIC + ADEDLEN_VERSION + \
152 ADEDLEN_FILLER + ADEDLEN_NENTRIES)
153 #define AD_ENTRY_LEN 12 /* size of a single entry header */
155 /* v1 field widths */
156 #define ADEDLEN_NAME 255
157 #define ADEDLEN_COMMENT 200
158 #define ADEDLEN_FILEI 16
159 #define ADEDLEN_FINDERI 32
161 /* v2 field widths */
162 #define ADEDLEN_FILEDATESI 16
163 #define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */
164 #define ADEDLEN_AFPFILEI 4
165 #define ADEDLEN_MACFILEI 4
166 #define ADEDLEN_PRODOSFILEI 8
167 #define ADEDLEN_MSDOSFILEI 2
168 #define ADEDLEN_DID 4
171 #define AD_DATASZ1 589
172 #define AD_DATASZ2 665 /* v1 + 4 new entries (entry desc. + entry) */
173 #define AD_DATASZ_MAX 1024
174 #if AD_VERSION == AD_VERSION1
175 #define AD_DATASZ AD_DATASZ1 /* hold enough for the entries */
176 #elif AD_VERSION == AD_VERSION2
177 #define AD_DATASZ AD_DATASZ2
181 * some legacy defines from netatalk-990130
182 * (to keep from breaking certain packages)
186 #define ADEDOFF_RFORK 589
187 #define ADEDOFF_NAME 86
188 #define ADEDOFF_COMMENT 341
189 #define ADEDOFF_FINDERI 557
190 #ifndef ADEDOFF_FILEI
191 #define ADEDOFF_FILEI 541
195 * The header of the AppleDouble Header File looks like this:
201 * Home File System 16 (this becomes filler in ad v2)
202 * Number of Entries 2
203 * Entry Descriptors for each entry:
214 typedef struct adf_lock_t {
217 int *refcount; /* handle read locks with multiple users */
228 adf_lock_t *adf_lock;
229 int adf_refcount, adf_lockcount, adf_lockmax;
232 /* some header protection */
233 #define AD_INITED 0xad494e54 /* ad"INT" */
236 u_int32_t ad_version;
237 char ad_filler[ 16 ];
238 struct ad_entry ad_eid[ ADEID_MAX ];
239 struct ad_fd ad_df, ad_hf;
240 int ad_flags, ad_inited;
241 int ad_refcount; /* used in afpd/ofork.c */
242 off_t ad_rlen; /* ressource fork len with AFP 3.0
243 the header parameter size is too small.
245 #ifdef USE_MMAPPED_HEADERS
248 char ad_data[AD_DATASZ_MAX];
252 #define ADFLAGS_DF (1<<0)
253 #define ADFLAGS_HF (1<<1)
254 #define ADFLAGS_DIR (1<<2)
255 #define ADFLAGS_NOADOUBLE (1<<3)
256 #define ADFLAGS_V1COMPAT (1<<4)
259 #define ADLOCK_CLR (0)
260 #define ADLOCK_RD (1<<0)
261 #define ADLOCK_WR (1<<1)
262 #define ADLOCK_MASK (ADLOCK_RD | ADLOCK_WR)
263 #define ADLOCK_UPGRADE (1<<2)
264 #define ADLOCK_FILELOCK (1<<3)
266 /* we use this so that we can use the same mechanism for both byte
267 * locks and file synchronization locks. i do this by co-opting either
268 * first bits on 32-bit machines or shifting above the last bit on
269 * 64-bit machines. this only matters for the data fork. */
270 #if defined(TRY_64BITOFF_T) && (~0UL > 0xFFFFFFFFU)
271 /* synchronization locks */
272 #define AD_FILELOCK_BASE (0x80000000)
274 #define AD_FILELOCK_BASE (0x7FFFFFFF -4)
276 #define AD_FILELOCK_OPEN_WR (AD_FILELOCK_BASE + 0)
277 #define AD_FILELOCK_OPEN_RD (AD_FILELOCK_BASE + 1)
278 #define AD_FILELOCK_DENY_WR (AD_FILELOCK_BASE + 2)
279 #define AD_FILELOCK_DENY_RD (AD_FILELOCK_BASE + 3)
280 #define AD_FILELOCK_OPEN_NONE (AD_FILELOCK_BASE + 4)
282 /* time stuff. we overload the bits a little. */
283 #define AD_DATE_CREATE 0
284 #define AD_DATE_MODIFY 4
285 #define AD_DATE_BACKUP 8
286 #define AD_DATE_ACCESS 12
287 #define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \
288 AD_DATE_BACKUP | AD_DATE_ACCESS)
289 #define AD_DATE_UNIX (1 << 10)
290 #define AD_DATE_START htonl(0x80000000)
291 #define AD_DATE_DELTA 946684800
292 #define AD_DATE_FROM_UNIX(x) htonl((x) - AD_DATE_DELTA)
293 #define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA)
295 /* private AFPFileInfo bits */
296 #define AD_AFPFILEI_OWNER (1 << 0) /* any owner */
297 #define AD_AFPFILEI_GROUP (1 << 1) /* ignore group */
298 #define AD_AFPFILEI_BLANKACCESS (1 << 2) /* blank access permissions */
300 #define ad_dfileno(ad) ((ad)->ad_df.adf_fd)
301 #define ad_hfileno(ad) ((ad)->ad_hf.adf_fd)
302 #define ad_getversion(ad) ((ad)->ad_version)
304 #define ad_getentrylen(ad,eid) ((ad)->ad_eid[(eid)].ade_len)
305 #define ad_setentrylen(ad,eid,len) \
306 ((ad)->ad_eid[(eid)].ade_len = (len))
307 #define ad_getentryoff(ad,eid) ((ad)->ad_eid[(eid)].ade_off)
308 #define ad_entry(ad,eid) ((caddr_t)(ad)->ad_data + \
309 (ad)->ad_eid[(eid)].ade_off)
310 #define ad_getoflags(ad,adf) (((adf)&ADFLAGS_HF) ? \
311 (ad)->ad_hf.adf_flags : (ad)->ad_df.adf_flags)
314 extern void ad_rebuild_header __P((struct adouble *));
315 extern int ad_flush __P((struct adouble *, int));
316 extern int ad_close __P((struct adouble *, int));
319 extern int ad_flock_lock __P((struct adouble *, const u_int32_t /*eid*/,
320 const int /*type*/, const off_t /*offset*/,
321 const size_t /*len*/, const int /*user*/));
322 extern int ad_fcntl_lock __P((struct adouble *, const u_int32_t /*eid*/,
323 const int /*type*/, const off_t /*offset*/,
324 const size_t /*len*/, const int /*user*/));
325 extern void ad_fcntl_unlock __P((struct adouble *, const int /*user*/));
327 extern int ad_flock_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
328 const int /*type*/, const off_t /*offset*/,
329 const size_t /*len*/));
330 extern int ad_fcntl_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
331 const int /*type*/, const off_t /*offset*/,
332 const size_t /*len*/));
334 #ifdef USE_FLOCK_LOCKS
335 #define ad_lock ad_flock_lock
336 #define ad_tmplock ad_flock_tmplock
337 #define ad_unlock(a,b)
339 #define ad_lock ad_fcntl_lock
340 #define ad_tmplock ad_fcntl_tmplock
341 #define ad_unlock ad_fcntl_unlock
345 extern char *ad_dir __P((const char *));
346 extern char *ad_path __P((const char *, int));
347 extern int ad_mode __P((const char *, int));
348 extern int ad_mkdir __P((const char *, int));
349 extern int ad_open __P((const char *, int, int, int, struct adouble *));
350 extern int ad_refresh __P((struct adouble *));
352 /* extend header to RW if R or W (W if R for locking),
355 static __inline__ mode_t ad_hf_mode (mode_t mode)
357 #ifndef USE_FLOCK_LOCKS
358 /* fnctl lock need write access */
359 if ((mode & S_IRUSR))
361 if ((mode & S_IRGRP))
363 if ((mode & S_IROTH))
366 /* if write mode set add read mode */
367 if ((mode & S_IWUSR))
369 if ((mode & S_IWGRP))
371 if ((mode & S_IWOTH))
377 extern mode_t ad_hf_mode __P((mode_t ));
380 /* ad_read.c/ad_write.c */
381 extern ssize_t ad_read __P((struct adouble *, const u_int32_t,
382 const off_t, char *, const size_t));
383 extern ssize_t ad_pread __P((struct ad_fd *, void *, size_t, off_t));
385 extern ssize_t ad_write __P((struct adouble *, const u_int32_t, off_t,
386 const int, const char *, const size_t));
388 extern ssize_t adf_pread __P((struct ad_fd *, void *, size_t, off_t));
389 extern ssize_t adf_pwrite __P((struct ad_fd *, const void *, size_t, off_t));
391 extern int ad_dtruncate __P((struct adouble *, const size_t));
392 extern int ad_rtruncate __P((struct adouble *, const size_t));
395 extern off_t ad_size __P((const struct adouble *, const u_int32_t ));
398 extern void *ad_mmapread __P((struct adouble *, const u_int32_t,
399 const off_t, const size_t));
400 extern void *ad_mmapwrite __P((struct adouble *, const u_int32_t,
401 const off_t, const int, const size_t));
402 #define ad_munmap(buf, len) (munmap((buf), (len)))
405 extern int ad_setdate __P((const struct adouble *, unsigned int, u_int32_t));
406 extern int ad_getdate __P((const struct adouble *, unsigned int, u_int32_t *));
409 extern int ad_setattr __P((const struct adouble *, const u_int16_t));
410 extern int ad_getattr __P((const struct adouble *, u_int16_t *));
412 #ifdef HAVE_SENDFILE_READ
413 extern ssize_t ad_readfile __P((const struct adouble *, const int,
414 const int, off_t, const size_t));
418 #ifdef HAVE_SENDFILE_WRITE
419 extern ssize_t ad_writefile __P((struct adouble *, const int,
420 const int, off_t, const int, const size_t));