2 * $Id: adouble.h,v 1.6 2001-06-11 17:27:28 rufustfirefly 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>
43 #include <netatalk/endian.h>
46 /* XXX: this is the wrong place to put this.
47 * NOTE: as of 2.2.1, linux can't do a sendfile from a socket. */
48 #ifdef SENDFILE_FLAVOR_LINUX
49 #define HAVE_SENDFILE_READ
50 #define HAVE_SENDFILE_WRITE
51 #include <asm/unistd.h>
53 static inline int sendfile(int fdout, int fdin, off_t *off, size_t count)
55 return syscall(__NR_sendfile, fdout, fdin, off, count);
58 #include <sys/sendfile.h>
62 #ifdef SENDFILE_FLAVOR_BSD
63 #define HAVE_SENDFILE_READ
67 * AppleDouble entry IDs.
72 #define ADEID_COMMENT 4
73 #define ADEID_ICONBW 5
74 #define ADEID_ICONCOL 6
75 #define ADEID_FILEI 7 /* v1, replaced by: */
76 #define ADEID_FILEDATESI 8 /* this */
77 #define ADEID_FINDERI 9
78 #define ADEID_MACFILEI 10 /* we don't use this */
79 #define ADEID_PRODOSFILEI 11 /* we store prodos info here */
80 #define ADEID_MSDOSFILEI 12 /* we don't use this */
81 #define ADEID_SHORTNAME 13
82 #define ADEID_AFPFILEI 14 /* where the rest of the FILEI info goes */
88 #define AD_APPLESINGLE_MAGIC 0x00051600
89 #define AD_APPLEDOUBLE_MAGIC 0x00051607
90 #define AD_MAGIC AD_APPLEDOUBLE_MAGIC
93 #define AD_VERSION1 0x00010000
94 #define AD_VERSION2 0x00020000
95 #define AD_VERSION AD_VERSION1
97 /* sizes of relevant entry bits */
98 #define ADEDLEN_MAGIC 4
99 #define ADEDLEN_VERSION 4
100 #define ADEDLEN_FILLER 16
101 #define ADEDLEN_NENTRIES 2
103 #define AD_HEADER_LEN (ADEDLEN_MAGIC + ADEDLEN_VERSION + \
104 ADEDLEN_FILLER + ADEDLEN_NENTRIES)
105 #define AD_ENTRY_LEN 12 /* size of a single entry header */
107 /* v1 field widths */
108 #define ADEDLEN_NAME 255
109 #define ADEDLEN_COMMENT 200
110 #define ADEDLEN_FILEI 16
111 #define ADEDLEN_FINDERI 32
113 /* v2 field widths */
114 #define ADEDLEN_FILEDATESI 16
115 #define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */
116 #define ADEDLEN_AFPFILEI 4
117 #define ADEDLEN_MACFILEI 4
118 #define ADEDLEN_PRODOSFILEI 8
119 #define ADEDLEN_MSDOSFILEI 2
120 #define ADEDLEN_DID 4
123 #define AD_DATASZ1 589
124 #define AD_DATASZ2 665 /* v1 + 4 new entries (entry desc. + entry) */
125 #define AD_DATASZ_MAX 1024
126 #if AD_VERSION == AD_VERSION1
127 #define AD_DATASZ AD_DATASZ1 /* hold enough for the entries */
128 #else if AD_VERSION == AD_VERSION2
129 #define AD_DATASZ AD_DATASZ2
133 * some legacy defines from netatalk-990130
134 * (to keep from breaking certain packages)
138 #define ADEDOFF_RFORK 589
139 #define ADEDOFF_NAME 86
140 #define ADEDOFF_COMMENT 341
141 #define ADEDOFF_FINDERI 557
142 #ifndef ADEDOFF_FILEI
143 #define ADEDOFF_FILEI 541
147 * The header of the AppleDouble Header File looks like this:
153 * Home File System 16 (this becomes filler in ad v2)
154 * Number of Entries 2
155 * Entry Descriptors for each entry:
166 typedef struct adf_lock_t {
169 int *refcount; /* handle read locks with multiple users */
176 adf_lock_t *adf_lock;
177 int adf_refcount, adf_lockcount, adf_lockmax;
180 /* some header protection */
181 #define AD_INITED 0xad494e54 /* ad"INT" */
184 u_int32_t ad_version;
185 char ad_filler[ 16 ];
186 struct ad_entry ad_eid[ ADEID_MAX ];
187 struct ad_fd ad_df, ad_hf;
188 int ad_flags, ad_inited;
189 int ad_refcount; /* used in afpd/ofork.c */
190 #ifdef USE_MMAPPED_HEADERS
193 char ad_data[AD_DATASZ_MAX];
197 #define ADFLAGS_DF (1<<0)
198 #define ADFLAGS_HF (1<<1)
199 #define ADFLAGS_DIR (1<<2)
200 #define ADFLAGS_NOADOUBLE (1<<3)
201 #define ADFLAGS_V1COMPAT (1<<4)
204 #define ADLOCK_CLR (0)
205 #define ADLOCK_RD (1<<0)
206 #define ADLOCK_WR (1<<1)
207 #define ADLOCK_MASK (ADLOCK_RD | ADLOCK_WR)
208 #define ADLOCK_UPGRADE (1<<2)
209 #define ADLOCK_FILELOCK (1<<3)
211 /* we use this so that we can use the same mechanism for both byte
212 * locks and file synchronization locks. i do this by co-opting either
213 * first bits on 32-bit machines or shifting above the last bit on
214 * 64-bit machines. this only matters for the data fork. */
215 #if defined(TRY_64BITOFF_T) && (~0UL > 0xFFFFFFFFU)
216 /* synchronization locks */
217 #define AD_FILELOCK_BASE (0x80000000)
218 #define AD_FILELOCK_WR (AD_FILELOCK_BASE + 0)
219 #define AD_FILELOCK_RD (AD_FILELOCK_BASE + 1)
221 #define AD_FILELOCK_BASE (0x7FFFFFFE)
222 #define AD_FILELOCK_WR (AD_FILELOCK_BASE + 0)
223 #define AD_FILELOCK_RD (AD_FILELOCK_BASE + 1)
226 /* time stuff. we overload the bits a little. */
227 #define AD_DATE_CREATE 0
228 #define AD_DATE_MODIFY 4
229 #define AD_DATE_BACKUP 8
230 #define AD_DATE_ACCESS 12
231 #define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \
232 AD_DATE_BACKUP | AD_DATE_ACCESS)
233 #define AD_DATE_UNIX (1 << 10)
234 #define AD_DATE_START htonl(0x80000000)
235 #define AD_DATE_DELTA 946684800
236 #define AD_DATE_FROM_UNIX(x) htonl((x) - AD_DATE_DELTA)
237 #define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA)
239 /* private AFPFileInfo bits */
240 #define AD_AFPFILEI_OWNER (1 << 0) /* any owner */
241 #define AD_AFPFILEI_GROUP (1 << 1) /* ignore group */
242 #define AD_AFPFILEI_BLANKACCESS (1 << 2) /* blank access permissions */
244 #define ad_dfileno(ad) ((ad)->ad_df.adf_fd)
245 #define ad_hfileno(ad) ((ad)->ad_hf.adf_fd)
246 #define ad_getversion(ad) ((ad)->ad_version)
248 #define ad_getentrylen(ad,eid) ((ad)->ad_eid[(eid)].ade_len)
249 #define ad_setentrylen(ad,eid,len) \
250 ((ad)->ad_eid[(eid)].ade_len = (len))
251 #define ad_getentryoff(ad,eid) ((ad)->ad_eid[(eid)].ade_off)
252 #define ad_entry(ad,eid) ((caddr_t)(ad)->ad_data + \
253 (ad)->ad_eid[(eid)].ade_off)
254 #define ad_getoflags(ad,adf) (((adf)&ADFLAGS_HF) ? \
255 (ad)->ad_hf.adf_flags : (ad)->ad_df.adf_flags)
258 extern void ad_rebuild_header __P((struct adouble *));
259 extern int ad_flush __P((struct adouble *, int));
260 extern int ad_close __P((struct adouble *, int));
263 extern int ad_flock_lock __P((struct adouble *, const u_int32_t /*eid*/,
264 const int /*type*/, const off_t /*offset*/,
265 const size_t /*len*/, const int /*user*/));
266 extern int ad_fcntl_lock __P((struct adouble *, const u_int32_t /*eid*/,
267 const int /*type*/, const off_t /*offset*/,
268 const size_t /*len*/, const int /*user*/));
269 extern void ad_fcntl_unlock __P((struct adouble *, const int /*user*/));
271 extern int ad_flock_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
272 const int /*type*/, const off_t /*offset*/,
273 const size_t /*len*/));
274 extern int ad_fcntl_tmplock __P((struct adouble *, const u_int32_t /*eid*/,
275 const int /*type*/, const off_t /*offset*/,
276 const size_t /*len*/));
278 #ifdef USE_FLOCK_LOCKS
279 #define ad_lock ad_flock_lock
280 #define ad_tmplock ad_flock_tmplock
281 #define ad_unlock(a,b)
283 #define ad_lock ad_fcntl_lock
284 #define ad_tmplock ad_fcntl_tmplock
285 #define ad_unlock ad_fcntl_unlock
289 extern char *ad_path __P((char *, int));
290 extern int ad_mode __P((char *, int));
291 extern int ad_mkdir __P((char *, int));
292 extern int ad_open __P((char *, int, int, int, struct adouble *));
293 extern int ad_refresh __P((struct adouble *));
295 /* ad_read.c/ad_write.c */
296 extern ssize_t ad_read __P((struct adouble *, const u_int32_t,
297 const off_t, char *, const size_t));
298 extern ssize_t ad_write __P((struct adouble *, const u_int32_t, off_t,
299 const int, const char *, const size_t));
300 extern int ad_dtruncate __P((struct adouble *, const size_t));
301 extern int ad_rtruncate __P((struct adouble *, const size_t));
304 extern off_t ad_size __P((const struct adouble *, const u_int32_t ));
307 extern void *ad_mmapread __P((struct adouble *, const u_int32_t,
308 const off_t, const size_t));
309 extern void *ad_mmapwrite __P((struct adouble *, const u_int32_t,
310 const off_t, const int, const size_t));
311 #define ad_munmap(buf, len) (munmap((buf), (len)))
314 extern int ad_setdate __P((const struct adouble *, unsigned int, u_int32_t));
315 extern int ad_getdate __P((const struct adouble *, unsigned int, u_int32_t *));
318 extern int ad_setattr __P((const struct adouble *, const u_int16_t));
319 extern int ad_getattr __P((const struct adouble *, u_int16_t *));
321 #ifdef HAVE_SENDFILE_READ
322 extern ssize_t ad_readfile __P((const struct adouble *, const int,
323 const int, off_t, const size_t));
327 #ifdef HAVE_SENDFILE_WRITE
328 extern ssize_t ad_writefile __P((struct adouble *, const int,
329 const int, off_t, const int, const size_t));