2 * $Id: adouble.h,v 1.10 2002-09-07 19:19:00 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
37 extern int flock (int /*fd*/, int /*operation*/);
40 #include <sys/cdefs.h>
41 #include <sys/types.h>
44 #include <netatalk/endian.h>
47 /* XXX: this is the wrong place to put this.
48 * NOTE: as of 2.2.1, linux can't do a sendfile from a socket. */
49 #ifdef SENDFILE_FLAVOR_LINUX
50 #define HAVE_SENDFILE_READ
51 #define HAVE_SENDFILE_WRITE
52 #include <asm/unistd.h>
54 static inline int sendfile(int fdout, int fdin, off_t *off, size_t count)
56 return syscall(__NR_sendfile, fdout, fdin, off, count);
59 #include <sys/sendfile.h>
63 #ifdef SENDFILE_FLAVOR_BSD
64 #define HAVE_SENDFILE_READ
68 * AppleDouble entry IDs.
73 #define ADEID_COMMENT 4
74 #define ADEID_ICONBW 5
75 #define ADEID_ICONCOL 6
76 #define ADEID_FILEI 7 /* v1, replaced by: */
77 #define ADEID_FILEDATESI 8 /* this */
78 #define ADEID_FINDERI 9
79 #define ADEID_MACFILEI 10 /* we don't use this */
80 #define ADEID_PRODOSFILEI 11 /* we store prodos info here */
81 #define ADEID_MSDOSFILEI 12 /* we don't use this */
82 #define ADEID_SHORTNAME 13
83 #define ADEID_AFPFILEI 14 /* where the rest of the FILEI info goes */
89 #define AD_APPLESINGLE_MAGIC 0x00051600
90 #define AD_APPLEDOUBLE_MAGIC 0x00051607
91 #define AD_MAGIC AD_APPLEDOUBLE_MAGIC
94 #define AD_VERSION1 0x00010000
95 #define AD_VERSION2 0x00020000
96 #define AD_VERSION AD_VERSION1
98 /* sizes of relevant entry bits */
99 #define ADEDLEN_MAGIC 4
100 #define ADEDLEN_VERSION 4
101 #define ADEDLEN_FILLER 16
102 #define ADEDLEN_NENTRIES 2
104 #define AD_HEADER_LEN (ADEDLEN_MAGIC + ADEDLEN_VERSION + \
105 ADEDLEN_FILLER + ADEDLEN_NENTRIES)
106 #define AD_ENTRY_LEN 12 /* size of a single entry header */
108 /* v1 field widths */
109 #define ADEDLEN_NAME 255
110 #define ADEDLEN_COMMENT 200
111 #define ADEDLEN_FILEI 16
112 #define ADEDLEN_FINDERI 32
114 /* v2 field widths */
115 #define ADEDLEN_FILEDATESI 16
116 #define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */
117 #define ADEDLEN_AFPFILEI 4
118 #define ADEDLEN_MACFILEI 4
119 #define ADEDLEN_PRODOSFILEI 8
120 #define ADEDLEN_MSDOSFILEI 2
121 #define ADEDLEN_DID 4
124 #define AD_DATASZ1 589
125 #define AD_DATASZ2 665 /* v1 + 4 new entries (entry desc. + entry) */
126 #define AD_DATASZ_MAX 1024
127 #if AD_VERSION == AD_VERSION1
128 #define AD_DATASZ AD_DATASZ1 /* hold enough for the entries */
129 #elif AD_VERSION == AD_VERSION2
130 #define AD_DATASZ AD_DATASZ2
134 * some legacy defines from netatalk-990130
135 * (to keep from breaking certain packages)
139 #define ADEDOFF_RFORK 589
140 #define ADEDOFF_NAME 86
141 #define ADEDOFF_COMMENT 341
142 #define ADEDOFF_FINDERI 557
143 #ifndef ADEDOFF_FILEI
144 #define ADEDOFF_FILEI 541
148 * The header of the AppleDouble Header File looks like this:
154 * Home File System 16 (this becomes filler in ad v2)
155 * Number of Entries 2
156 * Entry Descriptors for each entry:
167 typedef struct adf_lock_t {
170 int *refcount; /* handle read locks with multiple users */
177 adf_lock_t *adf_lock;
178 int adf_refcount, adf_lockcount, adf_lockmax;
181 /* some header protection */
182 #define AD_INITED 0xad494e54 /* ad"INT" */
185 u_int32_t ad_version;
186 char ad_filler[ 16 ];
187 struct ad_entry ad_eid[ ADEID_MAX ];
188 struct ad_fd ad_df, ad_hf;
189 int ad_flags, ad_inited;
190 int ad_refcount; /* used in afpd/ofork.c */
191 #ifdef USE_MMAPPED_HEADERS
194 char ad_data[AD_DATASZ_MAX];
198 #define ADFLAGS_DF (1<<0)
199 #define ADFLAGS_HF (1<<1)
200 #define ADFLAGS_DIR (1<<2)
201 #define ADFLAGS_NOADOUBLE (1<<3)
202 #define ADFLAGS_V1COMPAT (1<<4)
205 #define ADLOCK_CLR (0)
206 #define ADLOCK_RD (1<<0)
207 #define ADLOCK_WR (1<<1)
208 #define ADLOCK_MASK (ADLOCK_RD | ADLOCK_WR)
209 #define ADLOCK_UPGRADE (1<<2)
210 #define ADLOCK_FILELOCK (1<<3)
212 /* we use this so that we can use the same mechanism for both byte
213 * locks and file synchronization locks. i do this by co-opting either
214 * first bits on 32-bit machines or shifting above the last bit on
215 * 64-bit machines. this only matters for the data fork. */
216 #if defined(TRY_64BITOFF_T) && (~0UL > 0xFFFFFFFFU)
217 /* synchronization locks */
218 #define AD_FILELOCK_BASE (0x80000000)
220 #define AD_FILELOCK_BASE (0x7FFFFFFF -4)
222 #define AD_FILELOCK_OPEN_WR (AD_FILELOCK_BASE + 0)
223 #define AD_FILELOCK_OPEN_RD (AD_FILELOCK_BASE + 1)
224 #define AD_FILELOCK_DENY_WR (AD_FILELOCK_BASE + 2)
225 #define AD_FILELOCK_DENY_RD (AD_FILELOCK_BASE + 3)
226 #define AD_FILELOCK_OPEN_NONE (AD_FILELOCK_BASE + 4)
228 /* time stuff. we overload the bits a little. */
229 #define AD_DATE_CREATE 0
230 #define AD_DATE_MODIFY 4
231 #define AD_DATE_BACKUP 8
232 #define AD_DATE_ACCESS 12
233 #define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \
234 AD_DATE_BACKUP | AD_DATE_ACCESS)
235 #define AD_DATE_UNIX (1 << 10)
236 #define AD_DATE_START htonl(0x80000000)
237 #define AD_DATE_DELTA 946684800
238 #define AD_DATE_FROM_UNIX(x) htonl((x) - AD_DATE_DELTA)
239 #define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA)
241 /* private AFPFileInfo bits */
242 #define AD_AFPFILEI_OWNER (1 << 0) /* any owner */
243 #define AD_AFPFILEI_GROUP (1 << 1) /* ignore group */
244 #define AD_AFPFILEI_BLANKACCESS (1 << 2) /* blank access permissions */
246 #define ad_dfileno(ad) ((ad)->ad_df.adf_fd)
247 #define ad_hfileno(ad) ((ad)->ad_hf.adf_fd)
248 #define ad_getversion(ad) ((ad)->ad_version)
250 #define ad_getentrylen(ad,eid) ((ad)->ad_eid[(eid)].ade_len)
251 #define ad_setentrylen(ad,eid,len) \
252 ((ad)->ad_eid[(eid)].ade_len = (len))
253 #define ad_getentryoff(ad,eid) ((ad)->ad_eid[(eid)].ade_off)
254 #define ad_entry(ad,eid) ((caddr_t)(ad)->ad_data + \
255 (ad)->ad_eid[(eid)].ade_off)
256 #define ad_getoflags(ad,adf) (((adf)&ADFLAGS_HF) ? \
257 (ad)->ad_hf.adf_flags : (ad)->ad_df.adf_flags)
260 extern void ad_rebuild_header __P((struct adouble *));
261 extern int ad_flush __P((struct adouble *, int));
262 extern int ad_close __P((struct adouble *, int));
265 extern int ad_flock_lock __P((struct adouble *, const u_int32_t /*eid*/,
266 const int /*type*/, const off_t /*offset*/,
267 const size_t /*len*/, const int /*user*/));
268 extern int ad_fcntl_lock __P((struct adouble *, const u_int32_t /*eid*/,
269 const int /*type*/, const off_t /*offset*/,
270 const size_t /*len*/, const int /*user*/));
271 extern void ad_fcntl_unlock __P((struct adouble *, const int /*user*/));
273 extern int ad_flock_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
274 const int /*type*/, const off_t /*offset*/,
275 const size_t /*len*/));
276 extern int ad_fcntl_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
277 const int /*type*/, const off_t /*offset*/,
278 const size_t /*len*/));
280 #ifdef USE_FLOCK_LOCKS
281 #define ad_lock ad_flock_lock
282 #define ad_tmplock ad_flock_tmplock
283 #define ad_unlock(a,b)
285 #define ad_lock ad_fcntl_lock
286 #define ad_tmplock ad_fcntl_tmplock
287 #define ad_unlock ad_fcntl_unlock
291 extern char *ad_dir __P((char *));
292 extern char *ad_path __P((char *, int));
293 extern int ad_mode __P((char *, int));
294 extern int ad_mkdir __P((char *, int));
295 extern int ad_open __P((char *, int, int, int, struct adouble *));
296 extern int ad_refresh __P((struct adouble *));
298 /* extend header to RW if R or W (W if R for locking),
300 static inline mode_t ad_hf_mode (mode_t mode)
302 #ifndef USE_FLOCK_LOCKS
303 /* fnctl lock need write access */
304 if ((mode & S_IRUSR))
306 if ((mode & S_IRGRP))
308 if ((mode & S_IROTH))
311 /* if write mode set add read mode */
312 if ((mode & S_IWUSR))
314 if ((mode & S_IWGRP))
316 if ((mode & S_IWOTH))
322 /* ad_read.c/ad_write.c */
323 extern ssize_t ad_read __P((struct adouble *, const u_int32_t,
324 const off_t, char *, const size_t));
325 extern ssize_t ad_write __P((struct adouble *, const u_int32_t, off_t,
326 const int, const char *, const size_t));
327 extern int ad_dtruncate __P((struct adouble *, const size_t));
328 extern int ad_rtruncate __P((struct adouble *, const size_t));
331 extern off_t ad_size __P((const struct adouble *, const u_int32_t ));
334 extern void *ad_mmapread __P((struct adouble *, const u_int32_t,
335 const off_t, const size_t));
336 extern void *ad_mmapwrite __P((struct adouble *, const u_int32_t,
337 const off_t, const int, const size_t));
338 #define ad_munmap(buf, len) (munmap((buf), (len)))
341 extern int ad_setdate __P((const struct adouble *, unsigned int, u_int32_t));
342 extern int ad_getdate __P((const struct adouble *, unsigned int, u_int32_t *));
345 extern int ad_setattr __P((const struct adouble *, const u_int16_t));
346 extern int ad_getattr __P((const struct adouble *, u_int16_t *));
348 #ifdef HAVE_SENDFILE_READ
349 extern ssize_t ad_readfile __P((const struct adouble *, const int,
350 const int, off_t, const size_t));
354 #ifdef HAVE_SENDFILE_WRITE
355 extern ssize_t ad_writefile __P((struct adouble *, const int,
356 const int, off_t, const int, const size_t));