2 * Copyright (c) 1990,1991 Regents of The University of Michigan.
5 * Permission to use, copy, modify, and distribute this software and
6 * its documentation for any purpose and without fee is hereby granted,
7 * provided that the above copyright notice appears in all copies and
8 * that both that copyright notice and this permission notice appear
9 * in supporting documentation, and that the name of The University
10 * of Michigan not be used in advertising or publicity pertaining to
11 * distribution of the software without specific, written prior
12 * permission. This software is supplied as is without expressed or
13 * implied warranties of any kind.
15 * Research Systems Unix Group
16 * The University of Michigan
18 * 535 W. William Street
21 * netatalk@itd.umich.edu
26 * @brief Part of Netatalk's AppleDouble implementatation
29 #ifndef _ATALK_ADOUBLE_H
30 #define _ATALK_ADOUBLE_H
37 #include <sys/types.h>
46 #include <atalk/bstrlib.h>
47 #include <atalk/locking.h>
50 #define AD_VERSION2 0x00020000
51 #define AD_VERSION_EA 0x00020002
54 #define AD_VERSION AD_VERSION2
57 * AppleDouble entry IDs.
62 #define ADEID_COMMENT 4
63 #define ADEID_ICONBW 5
64 #define ADEID_ICONCOL 6
65 #define ADEID_FILEI 7 /* v1, replaced by: */
66 #define ADEID_FILEDATESI 8 /* this */
67 #define ADEID_FINDERI 9
68 #define ADEID_MACFILEI 10 /* we don't use this */
69 #define ADEID_PRODOSFILEI 11 /* we store prodos info here */
70 #define ADEID_MSDOSFILEI 12 /* we don't use this */
71 #define ADEID_SHORTNAME 13
72 #define ADEID_AFPFILEI 14 /* where the rest of the FILEI info goes */
75 /* netatalk private note fileid reused DID */
76 #define ADEID_PRIVDEV 16
77 #define ADEID_PRIVINO 17
78 #define ADEID_PRIVSYN 18 /* in synch with database */
79 #define ADEID_PRIVID 19
80 #define ADEID_MAX (ADEID_PRIVID + 1)
82 /* These are the real ids for these entries, as stored in the adouble file */
83 #define AD_DEV 0x80444556
84 #define AD_INO 0x80494E4F
85 #define AD_SYN 0x8053594E
86 #define AD_ID 0x8053567E
89 #define AD_APPLESINGLE_MAGIC 0x00051600
90 #define AD_APPLEDOUBLE_MAGIC 0x00051607
91 #define AD_MAGIC AD_APPLEDOUBLE_MAGIC
93 /* sizes of relevant entry bits */
94 #define ADEDLEN_MAGIC 4
95 #define ADEDLEN_VERSION 4
96 #define ADEDLEN_FILLER 16
97 #define ADEDLEN_NENTRIES 2
98 #define AD_HEADER_LEN (ADEDLEN_MAGIC + ADEDLEN_VERSION + ADEDLEN_FILLER + ADEDLEN_NENTRIES)
99 #define AD_ENTRY_LEN 12 /* size of a single entry header */
102 #define ADEDLEN_NAME 255
103 #define ADEDLEN_COMMENT 200
104 #define ADEDLEN_FILEI 16
105 #define ADEDLEN_FINDERI 32
106 #define ADEDLEN_FILEDATESI 16
107 #define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */
108 #define ADEDLEN_AFPFILEI 4
109 #define ADEDLEN_MACFILEI 4
110 #define ADEDLEN_PRODOSFILEI 8
111 #define ADEDLEN_MSDOSFILEI 2
112 #define ADEDLEN_DID 4
113 #define ADEDLEN_PRIVDEV 8
114 #define ADEDLEN_PRIVINO 8
115 #define ADEDLEN_PRIVSYN 8
116 #define ADEDLEN_PRIVID 4
118 #define ADEID_NUM_V2 13
119 #define ADEID_NUM_EA 5
121 #define AD_DATASZ2 (AD_HEADER_LEN + ADEDLEN_NAME + ADEDLEN_COMMENT + ADEDLEN_FILEI + \
122 ADEDLEN_FINDERI + ADEDLEN_DID + ADEDLEN_AFPFILEI + ADEDLEN_SHORTNAME + \
123 ADEDLEN_PRODOSFILEI + ADEDLEN_PRIVDEV + ADEDLEN_PRIVINO + \
124 ADEDLEN_PRIVSYN + ADEDLEN_PRIVID + (ADEID_NUM_V2 * AD_ENTRY_LEN))
125 #if AD_DATASZ2 != 741
126 #error bad size for AD_DATASZ2
129 #define AD_DATASZ_EA (AD_HEADER_LEN + (ADEID_NUM_EA * AD_ENTRY_LEN) + ADEDLEN_FINDERI + \
130 ADEDLEN_COMMENT + ADEDLEN_FILEDATESI + ADEDLEN_AFPFILEI + ADEDLEN_PRIVID)
132 #if AD_DATASZ_EA != 342
133 #error bad size for AD_DATASZ_EA
136 #define AD_DATASZ_MAX 1024
138 #if AD_VERSION == AD_VERSION2
139 #define AD_DATASZ AD_DATASZ2
140 #elif AD_VERSION == AD_VERSION_EA
141 #define AD_DATASZ AD_DATASZ_EA
144 #define RFORK_EA_ALLOCSIZE (128*1024) /* 128k */
146 typedef u_int32_t cnid_t;
153 typedef struct adf_lock_t {
156 int *refcount; /* handle read locks with multiple users */
160 int adf_fd; /* -1: invalid, -2: symlink */
168 adf_lock_t *adf_lock;
169 int adf_refcount, adf_lockcount, adf_lockmax;
173 /* some header protection */
174 #define AD_INITED 0xad494e54 /* ad"INT" */
175 #define AD_CLOSED 0xadc10ced
179 struct adouble_fops {
180 const char *(*ad_path)(const char *, int);
181 int (*ad_mkrf)(const char *);
182 int (*ad_rebuild_header)(struct adouble *);
183 int (*ad_header_read)(struct adouble *, struct stat *);
184 int (*ad_header_upgrade)(struct adouble *, const char *);
188 u_int32_t ad_magic; /* Official adouble magic */
189 u_int32_t ad_version; /* Official adouble version number */
191 struct ad_entry ad_eid[ADEID_MAX];
192 struct ad_fd ad_data_fork; /* the data fork */
193 struct ad_fd ad_resource_fork; /* adouble:v2 -> the adouble file *
194 * adouble:ea -> the rfork EA */
195 struct ad_fd ad_metadata_fork; /* adouble:v2 -> unused *
196 * adouble:ea -> the metadata EA */
197 struct ad_fd *ad_md; /* either ad_resource or ad_metadata */
198 int ad_flags; /* Our adouble version info (AD_VERSION*) */
199 int ad_adflags; /* ad_open flags adflags like ADFLAGS_DIR */
202 int ad_refcount; /* multiple forks may open one adouble */
203 void *ad_resforkbuf; /* buffer for AD_VERSION_EA ressource fork */
204 size_t ad_resforkbufsize; /* size of ad_resforkbuf */
205 off_t ad_rlen; /* ressource fork len with AFP 3.0 *
206 * the header parameter size is too small. */
207 char *ad_m_name; /* mac name for open fork */
209 bstring ad_fullpath; /* fullpath of file, adouble:ea need this */
210 struct adouble_fops *ad_ops;
211 uint16_t ad_open_forks; /* open forks (by others) */
212 char ad_data[AD_DATASZ_MAX];
215 #define ADFLAGS_DF (1<<0)
216 #define ADFLAGS_RF (1<<1)
217 #define ADFLAGS_HF (1<<2)
218 #define ADFLAGS_DIR (1<<3)
219 #define ADFLAGS_NOHF (1<<4) /* not an error if no ressource fork */
220 #define ADFLAGS_CHECK_OF (1<<6) /* check for open forks from us and other afpd's */
222 #define ADVOL_NODEV (1 << 0)
223 #define ADVOL_CACHE (1 << 1)
224 #define ADVOL_UNIXPRIV (1 << 2) /* adouble unix priv */
225 #define ADVOL_INVDOTS (1 << 3) /* dot files (.DS_Store) are invisible) */
226 #define ADVOL_NOADOUBLE (1 << 4)
229 #define ADLOCK_CLR (0)
230 #define ADLOCK_RD (1<<0)
231 #define ADLOCK_WR (1<<1)
232 #define ADLOCK_MASK (ADLOCK_RD | ADLOCK_WR)
233 #define ADLOCK_UPGRADE (1<<2)
234 #define ADLOCK_FILELOCK (1<<3)
236 /* we use this so that we can use the same mechanism for both byte
237 * locks and file synchronization locks. i do this by co-opting either
238 * first bits on 32-bit machines or shifting above the last bit on
239 * 64-bit machines. this only matters for the data fork. */
240 #if defined(TRY_64BITOFF_T) && (~0UL > 0xFFFFFFFFU)
241 /* synchronization locks */
242 #define AD_FILELOCK_BASE (0x80000000)
244 #define AD_FILELOCK_BASE (0x7FFFFFFF -9)
248 * AD_FILELOCK_BASE case
250 #if _FILE_OFFSET_BITS == 64
251 #define BYTELOCK_MAX (0x7FFFFFFFFFFFFFFFULL)
253 /* Tru64 is an always-64-bit OS; version 4.0 does not set _FILE_OFFSET_BITS */
255 #define BYTELOCK_MAX (0x7FFFFFFFFFFFFFFFULL)
257 #define BYTELOCK_MAX (0x7FFFFFFFU)
261 #define AD_FILELOCK_OPEN_WR (AD_FILELOCK_BASE + 0)
262 #define AD_FILELOCK_OPEN_RD (AD_FILELOCK_BASE + 1)
263 #define AD_FILELOCK_DENY_WR (AD_FILELOCK_BASE + 2)
264 #define AD_FILELOCK_DENY_RD (AD_FILELOCK_BASE + 3)
265 #define AD_FILELOCK_OPEN_NONE (AD_FILELOCK_BASE + 4)
267 /* time stuff. we overload the bits a little. */
268 #define AD_DATE_CREATE 0
269 #define AD_DATE_MODIFY 4
270 #define AD_DATE_BACKUP 8
271 #define AD_DATE_ACCESS 12
272 #define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \
273 AD_DATE_BACKUP | AD_DATE_ACCESS)
274 #define AD_DATE_UNIX (1 << 10)
275 #define AD_DATE_START htonl(0x80000000)
276 #define AD_DATE_DELTA 946684800
277 #define AD_DATE_FROM_UNIX(x) htonl((x) - AD_DATE_DELTA)
278 #define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA)
280 /* various finder offset and info bits */
281 #define FINDERINFO_FRTYPEOFF 0
282 #define FINDERINFO_FRCREATOFF 4
283 #define FINDERINFO_FRFLAGOFF 8
285 /* FinderInfo Flags, char in `ad ls`, valid for files|dirs */
286 #define FINDERINFO_ISONDESK (1) /* "d", fd */
287 #define FINDERINFO_COLOR (0x0e)
288 #define FINDERINFO_HIDEEXT (1<<4) /* "e", fd */
289 #define FINDERINFO_ISHARED (1<<6) /* "m", f */
290 #define FINDERINFO_HASNOINITS (1<<7) /* "n", f */
291 #define FINDERINFO_HASBEENINITED (1<<8) /* "i", fd */
292 #define FINDERINFO_HASCUSTOMICON (1<<10) /* "c", fd */
293 #define FINDERINFO_ISSTATIONNERY (1<<11) /* "t", f */
294 #define FINDERINFO_NAMELOCKED (1<<12) /* "s", fd */
295 #define FINDERINFO_HASBUNDLE (1<<13) /* "b", fd */
296 #define FINDERINFO_INVISIBLE (1<<14) /* "v", fd */
297 #define FINDERINFO_ISALIAS (1<<15) /* "a", fd */
299 #define FINDERINFO_FRVIEWOFF 14
300 #define FINDERINFO_CUSTOMICON 0x4
301 #define FINDERINFO_CLOSEDVIEW 0x100
304 The "shared" and "invisible" attributes are opaque and stored and
305 retrieved from the FinderFlags. This fixes Bug #2802236:
306 <https://sourceforge.net/tracker/?func=detail&aid=2802236&group_id=8642&atid=108642>
309 /* AFP attributes, char in `ad ls`, valid for files|dirs */
310 #define ATTRBIT_INVISIBLE (1<<0) /* opaque from FinderInfo */
311 #define ATTRBIT_MULTIUSER (1<<1) /* file: opaque, dir: see below */
312 #define ATTRBIT_SYSTEM (1<<2) /* "y", fd */
313 #define ATTRBIT_DOPEN (1<<3) /* data fork already open. Not stored, computed on the fly */
314 #define ATTRBIT_ROPEN (1<<4) /* resource fork already open. Not stored, computed on the fly */
315 #define ATTRBIT_NOWRITE (1<<5) /* "w", f, write inhibit(v2)/read-only(v1) bit */
316 #define ATTRBIT_BACKUP (1<<6) /* "p", fd */
317 #define ATTRBIT_NORENAME (1<<7) /* "r", fd */
318 #define ATTRBIT_NODELETE (1<<8) /* "l", fd */
319 #define ATTRBIT_NOCOPY (1<<10) /* "o", f */
320 #define ATTRBIT_SETCLR (1<<15) /* set/clear bit (d) */
322 /* AFP attributes for dirs. These should probably be computed on the fly.
323 * We don't do that, nor does e.g. OS S X 10.5 Server */
324 #define ATTRBIT_EXPFLDR (1<<1) /* Folder is a sharepoint */
325 #define ATTRBIT_MOUNTED (1<<3) /* Directory is mounted by a user */
326 #define ATTRBIT_SHARED (1<<4) /* Shared area, called IsExpFolder in spec */
328 /* private AFPFileInfo bits */
329 #define AD_AFPFILEI_OWNER (1 << 0) /* any owner */
330 #define AD_AFPFILEI_GROUP (1 << 1) /* ignore group */
331 #define AD_AFPFILEI_BLANKACCESS (1 << 2) /* blank access permissions */
333 #define ad_data_fileno(ad) ((ad)->ad_data_fork.adf_fd)
334 #define ad_reso_fileno(ad) ((ad)->ad_resource_fork.adf_fd)
335 #define ad_meta_fileno(ad) ((ad)->ad_md->adf_fd)
337 #define ad_getversion(ad) ((ad)->ad_version)
339 #define ad_getentrylen(ad,eid) ((ad)->ad_eid[(eid)].ade_len)
340 #define ad_setentrylen(ad,eid,len) ((ad)->ad_eid[(eid)].ade_len = (len))
341 #define ad_getentryoff(ad,eid) ((ad)->ad_eid[(eid)].ade_off)
342 #define ad_entry(ad,eid) ((caddr_t)(ad)->ad_data + (ad)->ad_eid[(eid)].ade_off)
344 #define ad_get_RF_flags(ad) ((ad)->ad_resource_fork.adf_flags)
345 #define ad_get_MD_flags(ad) ((ad)->ad_md->adf_flags)
347 /* Refcounting open forks using one struct adouble */
348 #define ad_ref(ad) (ad)->ad_refcount++
349 #define ad_unref(ad) --((ad)->ad_refcount)
352 extern int ad_rebuild_adouble_header (struct adouble *);
353 extern int ad_rebuild_sfm_header (struct adouble *);
354 extern int ad_copy_header (struct adouble *, struct adouble *);
355 extern int ad_flush (struct adouble *);
356 extern int ad_close (struct adouble *, int);
359 extern int ad_testlock (struct adouble *adp, int eid, off_t off);
360 extern uint16_t ad_openforks(struct adouble *adp, uint16_t);
361 extern int ad_excl_lock (struct adouble *adp, uint32_t eid);
363 extern int ad_lock(struct adouble *, uint32_t eid, int type, off_t off, off_t len, int user);
364 extern void ad_unlock(struct adouble *, int user);
365 extern int ad_tmplock(struct adouble *, uint32_t eid, int type, off_t off, off_t len, int user);
368 extern const char *oflags2logstr(int oflags);
369 extern const char *adflags2logstr(int adflags);
370 extern int ad_setfuid (const uid_t );
371 extern uid_t ad_getfuid (void );
372 extern char *ad_dir (const char *);
373 extern const char *ad_path (const char *, int);
374 extern const char *ad_path_ea (const char *, int);
375 extern int ad_mode (const char *, int);
376 extern int ad_mkdir (const char *, int);
377 extern void ad_init (struct adouble *, int, int );
378 extern int ad_open (struct adouble *ad, const char *path, int adflags, ...);
379 extern int ad_openat (struct adouble *, int dirfd, const char *path, int adflags, ...);
380 extern int ad_refresh (struct adouble *);
381 extern int ad_stat (const char *, struct stat *);
382 extern int ad_metadata (const char *, int, struct adouble *);
383 extern int ad_metadataat (int, const char *, int, struct adouble *);
386 #define ad_open_metadata(name, flags, mode, adp)\
387 ad_open(name, ADFLAGS_HF | (flags), O_RDWR |(mode), 0666, (adp))
390 #define ad_close_metadata(adp) ad_close( (adp), ADFLAGS_HF)
392 /* build a resource fork mode from the data fork mode:
393 * remove X mode and extend header to RW if R or W (W if R for locking),
395 static inline mode_t ad_hf_mode (mode_t mode)
397 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
398 /* fnctl lock need write access */
399 if ((mode & S_IRUSR))
401 if ((mode & S_IRGRP))
403 if ((mode & S_IROTH))
406 /* if write mode set add read mode */
407 if ((mode & S_IWUSR))
409 if ((mode & S_IWGRP))
411 if ((mode & S_IWOTH))
417 /* ad_read.c/ad_write.c */
418 extern int sys_ftruncate(int fd, off_t length);
419 extern ssize_t ad_read(struct adouble *, uint32_t, off_t, char *, size_t);
420 extern ssize_t ad_pread(struct ad_fd *, void *, size_t, off_t);
421 extern ssize_t ad_write(struct adouble *, uint32_t, off_t, int, const char *, size_t);
422 extern ssize_t adf_pread(struct ad_fd *, void *, size_t, off_t);
423 extern ssize_t adf_pwrite(struct ad_fd *, const void *, size_t, off_t);
424 extern int ad_dtruncate(struct adouble *, off_t);
425 extern int ad_rtruncate(struct adouble *, off_t);
428 extern off_t ad_size (const struct adouble *, uint32_t );
431 extern void *ad_mmapread(struct adouble *, uint32_t, off_t, size_t);
432 extern void *ad_mmapwrite(struct adouble *, uint32_t, off_t, int, size_t);
433 #define ad_munmap(buf, len) (munmap((buf), (len)))
436 extern int ad_setdate(struct adouble *, unsigned int, uint32_t);
437 extern int ad_getdate(const struct adouble *, unsigned int, uint32_t *);
440 extern int ad_setattr(const struct adouble *, uint16_t);
441 extern int ad_getattr(const struct adouble *, uint16_t *);
442 extern int ad_setname(struct adouble *, const char *);
443 extern int ad_setid(struct adouble *, dev_t dev, ino_t ino, uint32_t, uint32_t, const void *);
444 extern u_int32_t ad_getid(struct adouble *, dev_t, ino_t, cnid_t, const void *);
445 extern u_int32_t ad_forcegetid(struct adouble *adp);
448 extern int ad_readfile_init(const struct adouble *ad, int eid, off_t *off, int end);
452 #ifdef HAVE_SENDFILE_WRITE
453 extern ssize_t ad_writefile(struct adouble *, int, int, off_t, int, size_t);
454 #endif /* HAVE_SENDFILE_WRITE */
457 #endif /* _ATALK_ADOUBLE_H */