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
36 #include <sys/types.h>
38 #include <sys/param.h>
41 #include <netatalk/endian.h>
42 #include <atalk/adouble.h>
44 #include "ad_private.h"
47 #define MAX(a, b) ((a) < (b) ? (b) : (a))
51 * AppleDouble entry default offsets.
52 * The layout looks like this:
54 * this is the v1 layout:
56 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
58 * we need to change it to look like this:
61 * field length (in bytes)
64 * FILEDATESI 16 replaces FILEI
68 * SHORTNAME 12 8.3 new
71 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
72 * and add in the new fields.
74 * NOTE: the HFS module will need similar modifications to interact with
78 #define ADEDOFF_MAGIC (0)
79 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
80 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
81 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
83 /* initial lengths of some of the fields */
84 #define ADEDLEN_INIT 0
86 /* make sure we don't redefine ADEDOFF_FILEI */
91 #define ADEID_NUM_V1 5
92 #define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
93 #define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
94 #define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
95 #define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
96 #define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
98 /* i stick things in a slightly different order than their eid order in
99 * case i ever want to separate RootInfo behaviour from the rest of the
101 #define ADEID_NUM_V2 9
102 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
103 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
104 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
105 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
106 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
107 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
108 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
109 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
110 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
114 /* we keep local copies of a bunch of stuff so that we can initialize things
117 /* Bits in the finderinfo data.
118 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
120 #define FINDERINFO_CUSTOMICON 0x4
121 #define FINDERINFO_CLOSEDVIEW 0x100
123 /* offsets in finderinfo */
124 #define FINDERINFO_FRTYPEOFF 0
125 #define FINDERINFO_FRCREATOFF 4
126 #define FINDERINFO_FRFLAGOFF 8
127 #define FINDERINFO_FRVIEWOFF 14
129 /* invisible bit for dot files */
130 #define ATTRBIT_INVISIBLE (1 << 0)
131 #define FINDERINFO_INVISIBLE (1 << 14)
133 /* this is to prevent changing timezones from causing problems with
134 localtime volumes. the screw-up is 30 years. we use a delta of 5
136 #define TIMEWARP_DELTA 157680000
140 u_int32_t id, offset, len;
143 #if AD_VERSION == AD_VERSION1
144 static const struct entry entry_order[] = {
145 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT},
146 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT},
147 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI},
148 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI},
149 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT},
152 #else if AD_VERSION == AD_VERSION2
153 static const struct entry entry_order[] = {
154 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
155 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
156 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
157 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
158 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
159 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
160 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
161 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
162 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
167 #if AD_VERSION == AD_VERSION2
170 static __inline__ int ad_v1tov2(struct adouble *ad, const char *path)
178 /* check to see if we should convert this header. */
179 if (!path || (ad->ad_version != AD_VERSION1))
182 /* convert from v1 to v2. what does this mean?
183 * 1) change FILEI into FILEDATESI
184 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
185 * 3) move FILEI attributes into AFPFILEI
186 * 4) initialize ACCESS field of FILEDATESI.
188 * so, we need 4*12 (entry ids) + 12 (shortname) + 4 (afpfilei) +
189 * 4 (did) + 8 (prodosi) = 76 more bytes. */
191 #define SHIFTDATA (AD_DATASZ2 - AD_DATASZ1)
193 /* bail if we can't get a lock */
194 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0) < 0)
197 if ((fd = open(path, O_RDWR)) < 0)
200 if (gettimeofday(&tv, NULL) < 0)
203 if (fstat(fd, &st) ||
204 ftruncate(fd, st.st_size + SHIFTDATA) < 0) {
208 /* last place for failure. */
209 if ((void *) (buf = (char *)
210 mmap(NULL, st.st_size + SHIFTDATA,
211 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
216 off = ad->ad_eid[ADEID_RFORK].ade_off;
218 #ifdef USE_MMAPPED_HEADERS
219 /* okay, unmap our old ad header and point it to our local copy */
220 munmap(ad->ad_data, off);
224 /* move the RFORK. this assumes that the RFORK is at the end */
225 memmove(buf + off + SHIFTDATA, buf + off,
226 ad->ad_eid[ADEID_RFORK].ade_len);
228 /* now, fix up our copy of the header */
229 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
231 /* replace FILEI with FILEDATESI */
232 ad_getattr(ad, &attr);
233 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
234 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
235 ad->ad_eid[ADEID_FILEI].ade_off = 0;
236 ad->ad_eid[ADEID_FILEI].ade_len = 0;
238 /* add in the new entries */
239 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
240 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
241 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
242 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
243 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
244 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
245 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
246 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
248 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
249 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
250 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
251 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
252 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
255 ad->ad_version = AD_VERSION2;
257 /* move our data buffer to make space for the new entries. */
258 memmove(buf + ADEDOFF_NAME_V2, buf + ADEDOFF_NAME_V1,
259 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
261 /* now, fill in the space with appropriate stuff. we're
262 operating as a v2 file now. */
263 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, tv.tv_sec);
264 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
265 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
266 ad_setattr(ad, attr);
267 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
268 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
270 /* rebuild the header and cleanup */
271 ad_rebuild_header(ad);
272 munmap(buf, st.st_size + SHIFTDATA);
274 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
276 #ifdef USE_MMAPPED_HEADERS
277 /* now remap our header */
278 ad->ad_data = mmap(NULL, ADEDOFF_RFORK_V2, PROT_READ | PROT_WRITE,
279 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ? MAP_SHARED :
280 MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
281 if (ad->ad_data == MAP_FAILED)
288 ftruncate(fd, st.st_size);
292 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
299 /* read in the entries */
300 static __inline__ void parse_entries(struct adouble *ad, char *buf,
303 u_int32_t eid, len, off;
305 /* now, read in the entry bits */
306 for (; nentries > 0; nentries-- ) {
307 memcpy(&eid, buf, sizeof( eid ));
309 buf += sizeof( eid );
310 memcpy(&off, buf, sizeof( off ));
312 buf += sizeof( off );
313 memcpy(&len, buf, sizeof( len ));
315 buf += sizeof( len );
317 if ( 0 < eid && eid < ADEID_MAX ) {
318 ad->ad_eid[ eid ].ade_off = off;
319 ad->ad_eid[ eid ].ade_len = len;
321 syslog( LOG_DEBUG, "ad_refresh: nentries %hd eid %d\n",
328 /* this reads enough of the header so that we can figure out all of
329 * the entry lengths and offsets. once that's done, we just read/mmap
330 * the rest of the header in.
332 * NOTE: we're assuming that the resource fork is kept at the end of
333 * the file. also, mmapping won't work for the hfs fs until it
334 * understands how to mmap header files. */
335 static __inline__ int ad_header_read(struct adouble *ad)
337 #ifdef USE_MMAPPED_HEADERS
338 char buf[AD_ENTRY_LEN*ADEID_MAX];
340 char *buf = ad->ad_data;
344 static int warning = 0;
346 /* read the header */
347 if ( ad->ad_hf.adf_off != 0 ) {
348 if ( lseek( ad->ad_hf.adf_fd, 0L, SEEK_SET ) < 0L ) {
351 ad->ad_hf.adf_off = 0;
354 if (read( ad->ad_hf.adf_fd, buf, AD_HEADER_LEN) != AD_HEADER_LEN) {
360 ad->ad_hf.adf_off = AD_HEADER_LEN;
362 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
363 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION,
364 sizeof( ad->ad_version ));
366 /* tag broken v1 headers. just assume they're all right.
367 * we detect two cases: null magic/version
368 * byte swapped magic/version
369 * XXX: in the future, you'll need the v1compat flag.
370 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
371 if (!ad->ad_magic && !ad->ad_version) {
373 syslog(LOG_DEBUG, "notice: fixing up null v1 magic/version.");
376 ad->ad_magic = AD_MAGIC;
377 ad->ad_version = AD_VERSION1;
379 } else if ((ad->ad_magic == AD_MAGIC) &&
380 (ad->ad_version == AD_VERSION1)) {
382 syslog(LOG_DEBUG, "notice: fixing up byte-swapped v1 magic/version.");
387 ad->ad_magic = ntohl( ad->ad_magic );
388 ad->ad_version = ntohl( ad->ad_version );
391 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
392 #if AD_VERSION == AD_VERSION2
393 && (ad->ad_version != AD_VERSION2)
397 syslog(LOG_DEBUG, "ad_open: can't parse AppleDouble header.");
401 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
402 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
403 nentries = ntohs( nentries );
405 /* read in all the entry headers. if we have more than the
406 * maximum, just hope that the rfork is specified early on. */
407 len = nentries*AD_ENTRY_LEN;
408 #ifdef USE_MMAPPED_HEADERS
409 if (len > sizeof(buf))
412 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
413 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
414 buf += AD_HEADER_LEN;
416 if (read(ad->ad_hf.adf_fd, buf, len) != len) {
419 syslog(LOG_DEBUG, "ad_header_read: can't read entry info.");
422 ad->ad_hf.adf_off += len;
424 /* figure out all of the entry offsets and lengths. if we aren't
425 * able to read a resource fork entry, bail. */
426 parse_entries(ad, buf, nentries);
427 if (!ad_getentryoff(ad, ADEID_RFORK)
428 #ifndef USE_MMAPPED_HEADERS
429 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
432 syslog(LOG_DEBUG, "ad_header_read: problem with rfork entry offset.");
436 /* read/mmap up to the beginning of the resource fork. */
437 #ifdef USE_MMAPPED_HEADERS
438 ad->ad_data = mmap(NULL, ad_getentryoff(ad, ADEID_RFORK),
439 PROT_READ | PROT_WRITE,
440 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ? MAP_SHARED :
441 MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
442 if (ad->ad_data == MAP_FAILED)
446 len = ad_getentryoff(ad, ADEID_RFORK) - ad->ad_hf.adf_off;
447 if (read(ad->ad_hf.adf_fd, buf, len) != len) {
450 syslog(LOG_DEBUG, "ad_header_read: can't read in entries.");
455 /* fix up broken dates */
456 if (ad->ad_version == AD_VERSION1) {
460 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
461 return 1; /* fail silently */
464 /* check to see if the ad date is wrong. just see if we have
465 * a modification date in the future. */
466 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
467 (aint > TIMEWARP_DELTA + st.st_mtime)) {
468 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
469 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
470 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
471 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
472 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
481 * Put the .AppleDouble where it needs to be:
485 * \ b/.AppleDouble/.Parent
488 ad_path( path, adflags )
492 static char pathbuf[ MAXPATHLEN + 1];
493 char c, *slash, buf[MAXPATHLEN + 1];
495 strncpy(buf, path, MAXPATHLEN);
496 if ( adflags & ADFLAGS_DIR ) {
497 strncpy( pathbuf, buf, MAXPATHLEN );
498 if ( *buf != '\0' ) {
499 strcat( pathbuf, "/" );
503 if (( slash = strrchr( buf, '/' )) != NULL ) {
506 strncpy( pathbuf, buf, MAXPATHLEN);
513 strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
514 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
520 * Support inherited protection modes for AppleDouble files. The supplied
521 * mode is ANDed with the parent directory's mask value in lieu of "umask",
522 * and that value is returned.
525 #define DEFMASK 7700 /* be conservative */
528 ad_mode( path, mode )
532 static char modebuf[ MAXPATHLEN + 1];
537 return( mode ); /* save on syscalls */
540 if ( strlen( path ) >= MAXPATHLEN ) {
541 return( mode & DEFMASK ); /* can't do it */
545 * For a path with directories in it, remove the final component
546 * (path or subdirectory name) to get the name we want to stat.
547 * For a path which is just a filename, use "." instead.
549 strcpy( modebuf, path );
550 if (( slash = strrchr( modebuf, '/' )) != NULL ) {
551 *slash = '\0'; /* remove pathname component */
553 modebuf[0] = '.'; /* use current directory */
557 if ( stat( modebuf, &stbuf ) != 0 ) {
558 return( mode & DEFMASK ); /* bail out... can't stat dir? */
561 return( mode & stbuf.st_mode );
565 * Use mkdir() with mode bits taken from ad_mode().
568 ad_mkdir( path, mode )
572 return mkdir( path, ad_mode( path, mode ) );
577 * It's not possible to open the header file O_RDONLY -- the read
578 * will fail and return an error. this refcounts things now.
580 int ad_open( path, adflags, oflags, mode, ad )
582 int adflags, oflags, mode;
585 const struct entry *eid;
591 if (ad->ad_inited != AD_INITED) {
594 adf_lock_init(&ad->ad_df);
595 adf_lock_init(&ad->ad_hf);
596 #ifdef USE_MMAPPED_HEADERS
597 ad->ad_data = MAP_FAILED;
599 ad->ad_inited = AD_INITED;
602 if (adflags & ADFLAGS_DF) {
603 if (ad_dfileno(ad) == -1) {
604 if (( ad->ad_df.adf_fd =
605 open( path, oflags, ad_mode( path, mode ) )) < 0 ) {
608 ad->ad_df.adf_off = 0;
609 ad->ad_df.adf_flags = oflags;
611 ad->ad_df.adf_refcount++;
614 if (adflags & ADFLAGS_HF) {
615 if (ad_hfileno(ad) == -1) {
616 ad_p = ad_path( path, adflags );
617 admode = ad_mode( ad_p, mode );
619 hoflags = oflags & ~O_CREAT;
620 if (( ad->ad_hf.adf_fd = open( ad_p, hoflags, admode )) < 0 ) {
621 if ( errno == ENOENT && hoflags != oflags ) {
623 * We're expecting to create a new adouble header file,
627 if (( ad->ad_hf.adf_fd = open( ad_p, oflags,
630 * Probably .AppleDouble doesn't exist, try to
633 if ((errno == ENOENT) &&
634 ((adflags & ADFLAGS_NOADOUBLE) == 0)) {
635 if (( slash = strrchr( ad_p, '/' )) == NULL ) {
636 ad_close( ad, adflags );
641 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
642 ad_close( ad, adflags );
646 if (( ad->ad_hf.adf_fd =
647 open( ad_p, oflags, ad_mode( ad_p, mode) )) < 0 ) {
648 ad_close( ad, adflags );
652 ad_close( ad, adflags );
656 ad->ad_hf.adf_flags = oflags;
658 ad_close( ad, adflags );
661 } else if ((fstat(ad->ad_hf.adf_fd, &st) == 0) &&
663 /* for 0 length files, treat them as new. */
664 ad->ad_hf.adf_flags = oflags;
666 ad->ad_hf.adf_flags = hoflags;
668 ad->ad_hf.adf_off = 0;
671 * This is a new adouble header file. Initialize the structure,
672 * instead of reading it.
674 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
675 if ( ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT )) {
678 ad->ad_magic = AD_MAGIC;
679 ad->ad_version = AD_VERSION;
680 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
682 #ifdef USE_MMAPPED_HEADERS
683 /* truncate the header file and mmap it. */
684 ftruncate(ad->ad_hf.adf_fd, AD_DATASZ);
685 ad->ad_data = mmap(NULL, AD_DATASZ, PROT_READ | PROT_WRITE,
686 MAP_SHARED, ad->ad_hf.adf_fd, 0);
687 if (ad->ad_data == MAP_FAILED) {
688 ad_close(ad, adflags);
692 memset(ad->ad_data, 0, sizeof(ad->ad_data));
697 ad->ad_eid[eid->id].ade_off = eid->offset;
698 ad->ad_eid[eid->id].ade_len = eid->len;
702 /* put something sane in the directory finderinfo */
703 if (adflags & ADFLAGS_DIR) {
704 /* set default view */
705 ashort = htons(FINDERINFO_CLOSEDVIEW);
706 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
707 &ashort, sizeof(ashort));
709 /* set default creator/type fields */
710 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,
712 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,
716 /* make things invisible */
717 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
718 ashort = htons(ATTRBIT_INVISIBLE);
719 ad_setattr(ad, ashort);
720 ashort = htons(FINDERINFO_INVISIBLE);
721 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
722 &ashort, sizeof(ashort));
725 if (gettimeofday(&tv, NULL) < 0) {
726 ad_close(ad, adflags);
730 /* put something sane in the date fields */
731 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, tv.tv_sec);
732 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, tv.tv_sec);
733 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, tv.tv_sec);
734 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
738 * Read the adouble header in and parse it.
740 if ((ad_header_read( ad ) < 0)
741 #if AD_VERSION == AD_VERSION2
742 || (ad_v1tov2(ad, ad_p) < 0)
745 ad_close( ad, adflags );
750 ad->ad_hf.adf_refcount++;
756 /* to do this with mmap, we need the hfs fs to understand how to mmap
758 int ad_refresh(struct adouble *ad)
760 #ifdef USE_MMAPPED_HEADERS
764 if (ad->ad_hf.adf_fd < -1)
767 #ifdef USE_MMAPPED_HEADERS
768 if (ad->ad_data == MAP_FAILED)
771 /* re-read the header */
772 off = ad_getentryoff(ad, ADEID_RFORK);
773 memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof(nentries));
774 nentries = ntohs(nentries);
775 parse_entries(ad, ad->ad_data + AD_HEADER_LEN, nentries);
777 /* check to see if something screwy happened */
778 if (!ad_getentryoff(ad, ADEID_RFORK))
781 /* if there's a length discrepancy, remap the header. this shouldn't
782 * really ever happen. */
783 if (off != ad_getentryoff(ad, ADEID_RFORK)) {
784 char *buf = ad->ad_data;
786 ad->ad_data = mmap(NULL, ad_getentryoff(ad, ADEID_RFORK),
787 PROT_READ | PROT_WRITE,
788 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ?
789 MAP_SHARED : MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
790 if (ad->ad_data == MAP_FAILED) {
799 return ad_header_read(ad);