2 * Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
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
32 #include <sys/types.h>
34 #include <sys/param.h>
37 #include <netatalk/endian.h>
38 #include <atalk/adouble.h>
40 #include "ad_private.h"
43 #define MAX(a, b) ((a) < (b) ? (b) : (a))
47 * AppleDouble entry default offsets.
48 * The layout looks like this:
50 * this is the v1 layout:
52 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
54 * we need to change it to look like this:
57 * field length (in bytes)
60 * FILEDATESI 16 replaces FILEI
64 * SHORTNAME 12 8.3 new
67 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
68 * and add in the new fields.
70 * NOTE: the HFS module will need similar modifications to interact with
74 #define ADEDOFF_MAGIC (0)
75 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
76 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
77 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
79 /* initial lengths of some of the fields */
80 #define ADEDLEN_INIT 0
82 #define ADEID_NUM_V1 5
83 #define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
84 #define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
85 #define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
86 #define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
87 #define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
89 /* i stick things in a slightly different order than their eid order in
90 * case i ever want to separate RootInfo behaviour from the rest of the
92 #define ADEID_NUM_V2 9
93 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
94 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
95 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
96 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
97 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
98 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
99 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
100 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
101 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
105 /* we keep local copies of a bunch of stuff so that we can initialize things
108 /* Bits in the finderinfo data.
109 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
111 #define FINDERINFO_CUSTOMICON 0x4
112 #define FINDERINFO_CLOSEDVIEW 0x100
114 /* offsets in finderinfo */
115 #define FINDERINFO_FRTYPEOFF 0
116 #define FINDERINFO_FRCREATOFF 4
117 #define FINDERINFO_FRFLAGOFF 8
118 #define FINDERINFO_FRVIEWOFF 14
120 /* invisible bit for dot files */
121 #define ATTRBIT_INVISIBLE (1 << 0)
122 #define FINDERINFO_INVISIBLE (1 << 14)
124 /* this is to prevent changing timezones from causing problems with
125 localtime volumes. the screw-up is 30 years. we use a delta of 5
127 #define TIMEWARP_DELTA 157680000
131 u_int32_t id, offset, len;
134 #if AD_VERSION == AD_VERSION1
135 static const struct entry entry_order[] = {
136 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT},
137 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT},
138 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI},
139 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI},
140 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT},
143 #else if AD_VERSION == AD_VERSION2
144 static const struct entry entry_order[] = {
145 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
146 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
147 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
148 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
149 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
150 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
151 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
152 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
153 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
158 #if AD_VERSION == AD_VERSION2
161 static __inline__ int ad_v1tov2(struct adouble *ad, const char *path)
169 /* check to see if we should convert this header. */
170 if (!path || (ad->ad_version != AD_VERSION1))
173 /* convert from v1 to v2. what does this mean?
174 * 1) change FILEI into FILEDATESI
175 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
176 * 3) move FILEI attributes into AFPFILEI
177 * 4) initialize ACCESS field of FILEDATESI.
179 * so, we need 4*12 (entry ids) + 12 (shortname) + 4 (afpfilei) +
180 * 4 (did) + 8 (prodosi) = 76 more bytes. */
182 #define SHIFTDATA (AD_DATASZ2 - AD_DATASZ1)
184 /* bail if we can't get a lock */
185 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0) < 0)
188 if ((fd = open(path, O_RDWR)) < 0)
191 if (gettimeofday(&tv, NULL) < 0)
194 if (fstat(fd, &st) ||
195 ftruncate(fd, st.st_size + SHIFTDATA) < 0) {
199 /* last place for failure. */
200 if ((void *) (buf = (char *)
201 mmap(NULL, st.st_size + SHIFTDATA,
202 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
207 off = ad->ad_eid[ADEID_RFORK].ade_off;
209 #ifdef USE_MMAPPED_HEADERS
210 /* okay, unmap our old ad header and point it to our local copy */
211 munmap(ad->ad_data, off);
215 /* move the RFORK. this assumes that the RFORK is at the end */
216 memmove(buf + off + SHIFTDATA, buf + off,
217 ad->ad_eid[ADEID_RFORK].ade_len);
219 /* now, fix up our copy of the header */
220 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
222 /* replace FILEI with FILEDATESI */
223 ad_getattr(ad, &attr);
224 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
225 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
226 ad->ad_eid[ADEID_FILEI].ade_off = 0;
227 ad->ad_eid[ADEID_FILEI].ade_len = 0;
229 /* add in the new entries */
230 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
231 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
232 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
233 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
234 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
235 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
236 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
237 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
239 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
240 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
241 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
242 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
243 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
246 ad->ad_version = AD_VERSION2;
248 /* move our data buffer to make space for the new entries. */
249 memmove(buf + ADEDOFF_NAME_V2, buf + ADEDOFF_NAME_V1,
250 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
252 /* now, fill in the space with appropriate stuff. we're
253 operating as a v2 file now. */
254 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, tv.tv_sec);
255 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
256 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
257 ad_setattr(ad, attr);
258 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
259 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
261 /* rebuild the header and cleanup */
262 ad_rebuild_header(ad);
263 munmap(buf, st.st_size + SHIFTDATA);
265 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
267 #ifdef USE_MMAPPED_HEADERS
268 /* now remap our header */
269 ad->ad_data = mmap(NULL, ADEDOFF_RFORK_V2, PROT_READ | PROT_WRITE,
270 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ? MAP_SHARED :
271 MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
272 if (ad->ad_data == MAP_FAILED)
279 ftruncate(fd, st.st_size);
283 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
290 /* read in the entries */
291 static __inline__ void parse_entries(struct adouble *ad, char *buf,
294 u_int32_t eid, len, off;
296 /* now, read in the entry bits */
297 for (; nentries > 0; nentries-- ) {
298 memcpy(&eid, buf, sizeof( eid ));
300 buf += sizeof( eid );
301 memcpy(&off, buf, sizeof( off ));
303 buf += sizeof( off );
304 memcpy(&len, buf, sizeof( len ));
306 buf += sizeof( len );
308 if ( 0 < eid && eid < ADEID_MAX ) {
309 ad->ad_eid[ eid ].ade_off = off;
310 ad->ad_eid[ eid ].ade_len = len;
312 syslog( LOG_DEBUG, "ad_refresh: nentries %hd eid %d\n",
319 /* this reads enough of the header so that we can figure out all of
320 * the entry lengths and offsets. once that's done, we just read/mmap
321 * the rest of the header in.
323 * NOTE: we're assuming that the resource fork is kept at the end of
324 * the file. also, mmapping won't work for the hfs fs until it
325 * understands how to mmap header files. */
326 static __inline__ int ad_header_read(struct adouble *ad)
328 #ifdef USE_MMAPPED_HEADERS
329 char buf[AD_ENTRY_LEN*ADEID_MAX];
331 char *buf = ad->ad_data;
335 static int warning = 0;
337 /* read the header */
338 if ( ad->ad_hf.adf_off != 0 ) {
339 if ( lseek( ad->ad_hf.adf_fd, 0L, SEEK_SET ) < 0L ) {
342 ad->ad_hf.adf_off = 0;
345 if (read( ad->ad_hf.adf_fd, buf, AD_HEADER_LEN) != AD_HEADER_LEN) {
351 ad->ad_hf.adf_off = AD_HEADER_LEN;
353 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
354 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION,
355 sizeof( ad->ad_version ));
357 /* tag broken v1 headers. just assume they're all right.
358 * we detect two cases: null magic/version
359 * byte swapped magic/version
360 * XXX: in the future, you'll need the v1compat flag.
361 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
362 if (!ad->ad_magic && !ad->ad_version) {
364 syslog(LOG_DEBUG, "notice: fixing up null v1 magic/version.");
367 ad->ad_magic = AD_MAGIC;
368 ad->ad_version = AD_VERSION1;
370 } else if ((ad->ad_magic == AD_MAGIC) &&
371 (ad->ad_version == AD_VERSION1)) {
373 syslog(LOG_DEBUG, "notice: fixing up byte-swapped v1 magic/version.");
378 ad->ad_magic = ntohl( ad->ad_magic );
379 ad->ad_version = ntohl( ad->ad_version );
382 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
383 #if AD_VERSION == AD_VERSION2
384 && (ad->ad_version != AD_VERSION2)
388 syslog(LOG_DEBUG, "ad_open: can't parse AppleDouble header.");
392 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
393 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
394 nentries = ntohs( nentries );
396 /* read in all the entry headers. if we have more than the
397 * maximum, just hope that the rfork is specified early on. */
398 len = nentries*AD_ENTRY_LEN;
399 #ifdef USE_MMAPPED_HEADERS
400 if (len > sizeof(buf))
403 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
404 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
405 buf += AD_HEADER_LEN;
407 if (read(ad->ad_hf.adf_fd, buf, len) != len) {
410 syslog(LOG_DEBUG, "ad_header_read: can't read entry info.");
413 ad->ad_hf.adf_off += len;
415 /* figure out all of the entry offsets and lengths. if we aren't
416 * able to read a resource fork entry, bail. */
417 parse_entries(ad, buf, nentries);
418 if (!ad_getentryoff(ad, ADEID_RFORK)
419 #ifndef USE_MMAPPED_HEADERS
420 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
423 syslog(LOG_DEBUG, "ad_header_read: problem with rfork entry offset.");
427 /* read/mmap up to the beginning of the resource fork. */
428 #ifdef USE_MMAPPED_HEADERS
429 ad->ad_data = mmap(NULL, ad_getentryoff(ad, ADEID_RFORK),
430 PROT_READ | PROT_WRITE,
431 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ? MAP_SHARED :
432 MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
433 if (ad->ad_data == MAP_FAILED)
437 len = ad_getentryoff(ad, ADEID_RFORK) - ad->ad_hf.adf_off;
438 if (read(ad->ad_hf.adf_fd, buf, len) != len) {
441 syslog(LOG_DEBUG, "ad_header_read: can't read in entries.");
446 /* fix up broken dates */
447 if (ad->ad_version == AD_VERSION1) {
451 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
452 return 1; /* fail silently */
455 /* check to see if the ad date is wrong. just see if we have
456 * a modification date in the future. */
457 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
458 (aint > TIMEWARP_DELTA + st.st_mtime)) {
459 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
460 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
461 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
462 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
463 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
472 * Put the .AppleDouble where it needs to be:
476 * \ b/.AppleDouble/.Parent
479 ad_path( path, adflags )
483 static char pathbuf[ MAXPATHLEN + 1];
484 char c, *slash, buf[MAXPATHLEN + 1];
486 strncpy(buf, path, MAXPATHLEN);
487 if ( adflags & ADFLAGS_DIR ) {
488 strncpy( pathbuf, buf, MAXPATHLEN );
489 if ( *buf != '\0' ) {
490 strcat( pathbuf, "/" );
494 if (( slash = strrchr( buf, '/' )) != NULL ) {
497 strncpy( pathbuf, buf, MAXPATHLEN);
504 strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
505 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
511 * Support inherited protection modes for AppleDouble files. The supplied
512 * mode is ANDed with the parent directory's mask value in lieu of "umask",
513 * and that value is returned.
516 #define DEFMASK 7700 /* be conservative */
519 ad_mode( path, mode )
523 static char modebuf[ MAXPATHLEN + 1];
528 return( mode ); /* save on syscalls */
531 if ( strlen( path ) >= MAXPATHLEN ) {
532 return( mode & DEFMASK ); /* can't do it */
536 * For a path with directories in it, remove the final component
537 * (path or subdirectory name) to get the name we want to stat.
538 * For a path which is just a filename, use "." instead.
540 strcpy( modebuf, path );
541 if (( slash = strrchr( modebuf, '/' )) != NULL ) {
542 *slash = '\0'; /* remove pathname component */
544 modebuf[0] = '.'; /* use current directory */
548 if ( stat( modebuf, &stbuf ) != 0 ) {
549 return( mode & DEFMASK ); /* bail out... can't stat dir? */
552 return( mode & stbuf.st_mode );
556 * Use mkdir() with mode bits taken from ad_mode().
559 ad_mkdir( path, mode )
563 return mkdir( path, ad_mode( path, mode ) );
568 * It's not possible to open the header file O_RDONLY -- the read
569 * will fail and return an error. this refcounts things now.
571 int ad_open( path, adflags, oflags, mode, ad )
573 int adflags, oflags, mode;
576 const struct entry *eid;
582 if (ad->ad_inited != AD_INITED) {
585 adf_lock_init(&ad->ad_df);
586 adf_lock_init(&ad->ad_hf);
587 #ifdef USE_MMAPPED_HEADERS
588 ad->ad_data = MAP_FAILED;
590 ad->ad_inited = AD_INITED;
593 if (adflags & ADFLAGS_DF) {
594 if (ad_dfileno(ad) == -1) {
595 if (( ad->ad_df.adf_fd =
596 open( path, oflags, ad_mode( path, mode ) )) < 0 ) {
599 ad->ad_df.adf_off = 0;
600 ad->ad_df.adf_flags = oflags;
602 ad->ad_df.adf_refcount++;
605 if (adflags & ADFLAGS_HF) {
606 if (ad_hfileno(ad) == -1) {
607 ad_p = ad_path( path, adflags );
608 admode = ad_mode( ad_p, mode );
610 hoflags = oflags & ~O_CREAT;
611 if (( ad->ad_hf.adf_fd = open( ad_p, hoflags, admode )) < 0 ) {
612 if ( errno == ENOENT && hoflags != oflags ) {
614 * We're expecting to create a new adouble header file,
618 if (( ad->ad_hf.adf_fd = open( ad_p, oflags,
621 * Probably .AppleDouble doesn't exist, try to
624 if ((errno == ENOENT) &&
625 ((adflags & ADFLAGS_NOADOUBLE) == 0)) {
626 if (( slash = strrchr( ad_p, '/' )) == NULL ) {
627 ad_close( ad, adflags );
632 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
633 ad_close( ad, adflags );
637 if (( ad->ad_hf.adf_fd =
638 open( ad_p, oflags, ad_mode( ad_p, mode) )) < 0 ) {
639 ad_close( ad, adflags );
643 ad_close( ad, adflags );
647 ad->ad_hf.adf_flags = oflags;
649 ad_close( ad, adflags );
652 } else if ((fstat(ad->ad_hf.adf_fd, &st) == 0) &&
654 /* for 0 length files, treat them as new. */
655 ad->ad_hf.adf_flags = oflags;
657 ad->ad_hf.adf_flags = hoflags;
659 ad->ad_hf.adf_off = 0;
662 * This is a new adouble header file. Initialize the structure,
663 * instead of reading it.
665 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
666 if ( ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT )) {
669 ad->ad_magic = AD_MAGIC;
670 ad->ad_version = AD_VERSION;
671 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
673 #ifdef USE_MMAPPED_HEADERS
674 /* truncate the header file and mmap it. */
675 ftruncate(ad->ad_hf.adf_fd, AD_DATASZ);
676 ad->ad_data = mmap(NULL, AD_DATASZ, PROT_READ | PROT_WRITE,
677 MAP_SHARED, ad->ad_hf.adf_fd, 0);
678 if (ad->ad_data == MAP_FAILED) {
679 ad_close(ad, adflags);
683 memset(ad->ad_data, 0, sizeof(ad->ad_data));
688 ad->ad_eid[eid->id].ade_off = eid->offset;
689 ad->ad_eid[eid->id].ade_len = eid->len;
693 /* put something sane in the directory finderinfo */
694 if (adflags & ADFLAGS_DIR) {
695 /* set default view */
696 ashort = htons(FINDERINFO_CLOSEDVIEW);
697 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
698 &ashort, sizeof(ashort));
700 /* set default creator/type fields */
701 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,
703 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,
707 /* make things invisible */
708 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
709 ashort = htons(ATTRBIT_INVISIBLE);
710 ad_setattr(ad, ashort);
711 ashort = htons(FINDERINFO_INVISIBLE);
712 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
713 &ashort, sizeof(ashort));
716 if (gettimeofday(&tv, NULL) < 0) {
717 ad_close(ad, adflags);
721 /* put something sane in the date fields */
722 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, tv.tv_sec);
723 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, tv.tv_sec);
724 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, tv.tv_sec);
725 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
729 * Read the adouble header in and parse it.
731 if ((ad_header_read( ad ) < 0)
732 #if AD_VERSION == AD_VERSION2
733 || (ad_v1tov2(ad, ad_p) < 0)
736 ad_close( ad, adflags );
741 ad->ad_hf.adf_refcount++;
747 /* to do this with mmap, we need the hfs fs to understand how to mmap
749 int ad_refresh(struct adouble *ad)
751 #ifdef USE_MMAPPED_HEADERS
755 if (ad->ad_hf.adf_fd < -1)
758 #ifdef USE_MMAPPED_HEADERS
759 if (ad->ad_data == MAP_FAILED)
762 /* re-read the header */
763 off = ad_getentryoff(ad, ADEID_RFORK);
764 memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof(nentries));
765 nentries = ntohs(nentries);
766 parse_entries(ad, ad->ad_data + AD_HEADER_LEN, nentries);
768 /* check to see if something screwy happened */
769 if (!ad_getentryoff(ad, ADEID_RFORK))
772 /* if there's a length discrepancy, remap the header. this shouldn't
773 * really ever happen. */
774 if (off != ad_getentryoff(ad, ADEID_RFORK)) {
775 char *buf = ad->ad_data;
777 ad->ad_data = mmap(NULL, ad_getentryoff(ad, ADEID_RFORK),
778 PROT_READ | PROT_WRITE,
779 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ?
780 MAP_SHARED : MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
781 if (ad->ad_data == MAP_FAILED) {
790 return ad_header_read(ad);