2 * $Id: ad_open.c,v 1.6 2001-03-14 15:57:45 rufustfirefly Exp $
4 * Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
5 * Copyright (c) 1990,1991 Regents of The University of Michigan.
8 * Permission to use, copy, modify, and distribute this software and
9 * its documentation for any purpose and without fee is hereby granted,
10 * provided that the above copyright notice appears in all copies and
11 * that both that copyright notice and this permission notice appear
12 * in supporting documentation, and that the name of The University
13 * of Michigan not be used in advertising or publicity pertaining to
14 * distribution of the software without specific, written prior
15 * permission. This software is supplied as is without expressed or
16 * implied warranties of any kind.
18 * Research Systems Unix Group
19 * The University of Michigan
21 * 535 W. William Street
24 * netatalk@itd.umich.edu
38 #include <sys/types.h>
40 #include <sys/param.h>
43 #include <netatalk/endian.h>
44 #include <atalk/adouble.h>
46 #include "ad_private.h"
49 #define MAX(a, b) ((a) < (b) ? (b) : (a))
53 * AppleDouble entry default offsets.
54 * The layout looks like this:
56 * this is the v1 layout:
58 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
60 * we need to change it to look like this:
63 * field length (in bytes)
66 * FILEDATESI 16 replaces FILEI
70 * SHORTNAME 12 8.3 new
73 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
74 * and add in the new fields.
76 * NOTE: the HFS module will need similar modifications to interact with
80 #define ADEDOFF_MAGIC (0)
81 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
82 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
83 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
85 /* initial lengths of some of the fields */
86 #define ADEDLEN_INIT 0
88 /* make sure we don't redefine ADEDOFF_FILEI */
93 #define ADEID_NUM_V1 5
94 #define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
95 #define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
96 #define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
97 #define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
98 #define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
100 /* i stick things in a slightly different order than their eid order in
101 * case i ever want to separate RootInfo behaviour from the rest of the
103 #define ADEID_NUM_V2 9
104 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
105 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
106 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
107 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
108 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
109 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
110 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
111 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
112 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
116 /* we keep local copies of a bunch of stuff so that we can initialize things
119 /* Bits in the finderinfo data.
120 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
122 #define FINDERINFO_CUSTOMICON 0x4
123 #define FINDERINFO_CLOSEDVIEW 0x100
125 /* offsets in finderinfo */
126 #define FINDERINFO_FRTYPEOFF 0
127 #define FINDERINFO_FRCREATOFF 4
128 #define FINDERINFO_FRFLAGOFF 8
129 #define FINDERINFO_FRVIEWOFF 14
131 /* invisible bit for dot files */
132 #define ATTRBIT_INVISIBLE (1 << 0)
133 #define FINDERINFO_INVISIBLE (1 << 14)
135 /* this is to prevent changing timezones from causing problems with
136 localtime volumes. the screw-up is 30 years. we use a delta of 5
138 #define TIMEWARP_DELTA 157680000
142 u_int32_t id, offset, len;
145 #if AD_VERSION == AD_VERSION1
146 static const struct entry entry_order[] = {
147 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT},
148 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT},
149 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI},
150 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI},
151 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT},
154 #else if AD_VERSION == AD_VERSION2
155 static const struct entry entry_order[] = {
156 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
157 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
158 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
159 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
160 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
161 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
162 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
163 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
164 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
169 #if AD_VERSION == AD_VERSION2
172 static __inline__ int ad_v1tov2(struct adouble *ad, const char *path)
180 /* check to see if we should convert this header. */
181 if (!path || (ad->ad_version != AD_VERSION1))
184 /* convert from v1 to v2. what does this mean?
185 * 1) change FILEI into FILEDATESI
186 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
187 * 3) move FILEI attributes into AFPFILEI
188 * 4) initialize ACCESS field of FILEDATESI.
190 * so, we need 4*12 (entry ids) + 12 (shortname) + 4 (afpfilei) +
191 * 4 (did) + 8 (prodosi) = 76 more bytes. */
193 #define SHIFTDATA (AD_DATASZ2 - AD_DATASZ1)
195 /* bail if we can't get a lock */
196 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0) < 0)
199 if ((fd = open(path, O_RDWR)) < 0)
202 if (gettimeofday(&tv, NULL) < 0)
205 if (fstat(fd, &st) ||
206 ftruncate(fd, st.st_size + SHIFTDATA) < 0) {
210 /* last place for failure. */
211 if ((void *) (buf = (char *)
212 mmap(NULL, st.st_size + SHIFTDATA,
213 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
218 off = ad->ad_eid[ADEID_RFORK].ade_off;
220 #ifdef USE_MMAPPED_HEADERS
221 /* okay, unmap our old ad header and point it to our local copy */
222 munmap(ad->ad_data, off);
226 /* move the RFORK. this assumes that the RFORK is at the end */
227 memmove(buf + off + SHIFTDATA, buf + off,
228 ad->ad_eid[ADEID_RFORK].ade_len);
230 /* now, fix up our copy of the header */
231 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
233 /* replace FILEI with FILEDATESI */
234 ad_getattr(ad, &attr);
235 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
236 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
237 ad->ad_eid[ADEID_FILEI].ade_off = 0;
238 ad->ad_eid[ADEID_FILEI].ade_len = 0;
240 /* add in the new entries */
241 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
242 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
243 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
244 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
245 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
246 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
247 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
248 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
250 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
251 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
252 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
253 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
254 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
257 ad->ad_version = AD_VERSION2;
259 /* move our data buffer to make space for the new entries. */
260 memmove(buf + ADEDOFF_NAME_V2, buf + ADEDOFF_NAME_V1,
261 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
263 /* now, fill in the space with appropriate stuff. we're
264 operating as a v2 file now. */
265 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, tv.tv_sec);
266 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
267 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
268 ad_setattr(ad, attr);
269 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
270 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
272 /* rebuild the header and cleanup */
273 ad_rebuild_header(ad);
274 munmap(buf, st.st_size + SHIFTDATA);
276 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
278 #ifdef USE_MMAPPED_HEADERS
279 /* now remap our header */
280 ad->ad_data = mmap(NULL, ADEDOFF_RFORK_V2, PROT_READ | PROT_WRITE,
281 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ? MAP_SHARED :
282 MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
283 if (ad->ad_data == MAP_FAILED)
290 ftruncate(fd, st.st_size);
294 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
301 /* read in the entries */
302 static __inline__ void parse_entries(struct adouble *ad, char *buf,
305 u_int32_t eid, len, off;
307 /* now, read in the entry bits */
308 for (; nentries > 0; nentries-- ) {
309 memcpy(&eid, buf, sizeof( eid ));
311 buf += sizeof( eid );
312 memcpy(&off, buf, sizeof( off ));
314 buf += sizeof( off );
315 memcpy(&len, buf, sizeof( len ));
317 buf += sizeof( len );
319 if ( 0 < eid && eid < ADEID_MAX ) {
320 ad->ad_eid[ eid ].ade_off = off;
321 ad->ad_eid[ eid ].ade_len = len;
323 syslog( LOG_DEBUG, "ad_refresh: nentries %hd eid %d\n",
330 /* this reads enough of the header so that we can figure out all of
331 * the entry lengths and offsets. once that's done, we just read/mmap
332 * the rest of the header in.
334 * NOTE: we're assuming that the resource fork is kept at the end of
335 * the file. also, mmapping won't work for the hfs fs until it
336 * understands how to mmap header files. */
337 static __inline__ int ad_header_read(struct adouble *ad)
339 #ifdef USE_MMAPPED_HEADERS
340 char buf[AD_ENTRY_LEN*ADEID_MAX];
342 char *buf = ad->ad_data;
346 static int warning = 0;
348 /* read the header */
349 if ( ad->ad_hf.adf_off != 0 ) {
350 if ( lseek( ad->ad_hf.adf_fd, 0L, SEEK_SET ) < 0L ) {
353 ad->ad_hf.adf_off = 0;
356 if (read( ad->ad_hf.adf_fd, buf, AD_HEADER_LEN) != AD_HEADER_LEN) {
362 ad->ad_hf.adf_off = AD_HEADER_LEN;
364 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
365 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION,
366 sizeof( ad->ad_version ));
368 /* tag broken v1 headers. just assume they're all right.
369 * we detect two cases: null magic/version
370 * byte swapped magic/version
371 * XXX: in the future, you'll need the v1compat flag.
372 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
373 if (!ad->ad_magic && !ad->ad_version) {
375 syslog(LOG_DEBUG, "notice: fixing up null v1 magic/version.");
378 ad->ad_magic = AD_MAGIC;
379 ad->ad_version = AD_VERSION1;
381 } else if ((ad->ad_magic == AD_MAGIC) &&
382 (ad->ad_version == AD_VERSION1)) {
384 syslog(LOG_DEBUG, "notice: fixing up byte-swapped v1 magic/version.");
389 ad->ad_magic = ntohl( ad->ad_magic );
390 ad->ad_version = ntohl( ad->ad_version );
393 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
394 #if AD_VERSION == AD_VERSION2
395 && (ad->ad_version != AD_VERSION2)
399 syslog(LOG_DEBUG, "ad_open: can't parse AppleDouble header.");
403 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
404 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
405 nentries = ntohs( nentries );
407 /* read in all the entry headers. if we have more than the
408 * maximum, just hope that the rfork is specified early on. */
409 len = nentries*AD_ENTRY_LEN;
410 #ifdef USE_MMAPPED_HEADERS
411 if (len > sizeof(buf))
414 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
415 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
416 buf += AD_HEADER_LEN;
418 if (read(ad->ad_hf.adf_fd, buf, len) != len) {
421 syslog(LOG_DEBUG, "ad_header_read: can't read entry info.");
424 ad->ad_hf.adf_off += len;
426 /* figure out all of the entry offsets and lengths. if we aren't
427 * able to read a resource fork entry, bail. */
428 parse_entries(ad, buf, nentries);
429 if (!ad_getentryoff(ad, ADEID_RFORK)
430 #ifndef USE_MMAPPED_HEADERS
431 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
434 syslog(LOG_DEBUG, "ad_header_read: problem with rfork entry offset.");
438 /* read/mmap up to the beginning of the resource fork. */
439 #ifdef USE_MMAPPED_HEADERS
440 ad->ad_data = mmap(NULL, ad_getentryoff(ad, ADEID_RFORK),
441 PROT_READ | PROT_WRITE,
442 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ? MAP_SHARED :
443 MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
444 if (ad->ad_data == MAP_FAILED)
448 len = ad_getentryoff(ad, ADEID_RFORK) - ad->ad_hf.adf_off;
449 if (read(ad->ad_hf.adf_fd, buf, len) != len) {
452 syslog(LOG_DEBUG, "ad_header_read: can't read in entries.");
457 /* fix up broken dates */
458 if (ad->ad_version == AD_VERSION1) {
462 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
463 return 1; /* fail silently */
466 /* check to see if the ad date is wrong. just see if we have
467 * a modification date in the future. */
468 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
469 (aint > TIMEWARP_DELTA + st.st_mtime)) {
470 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
471 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
472 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
473 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
474 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
483 * Put the .AppleDouble where it needs to be:
487 * \ b/.AppleDouble/.Parent
490 ad_path( path, adflags )
494 static char pathbuf[ MAXPATHLEN + 1];
495 char c, *slash, buf[MAXPATHLEN + 1];
497 strncpy(buf, path, MAXPATHLEN);
498 if ( adflags & ADFLAGS_DIR ) {
499 strncpy( pathbuf, buf, MAXPATHLEN );
500 if ( *buf != '\0' ) {
501 strcat( pathbuf, "/" );
505 if (( slash = strrchr( buf, '/' )) != NULL ) {
508 strncpy( pathbuf, buf, MAXPATHLEN);
515 strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
516 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
522 * Support inherited protection modes for AppleDouble files. The supplied
523 * mode is ANDed with the parent directory's mask value in lieu of "umask",
524 * and that value is returned.
527 #define DEFMASK 7700 /* be conservative */
530 ad_mode( path, mode )
534 static char modebuf[ MAXPATHLEN + 1];
539 return( mode ); /* save on syscalls */
542 if ( strlen( path ) >= MAXPATHLEN ) {
543 return( mode & DEFMASK ); /* can't do it */
547 * For a path with directories in it, remove the final component
548 * (path or subdirectory name) to get the name we want to stat.
549 * For a path which is just a filename, use "." instead.
551 strcpy( modebuf, path );
552 if (( slash = strrchr( modebuf, '/' )) != NULL ) {
553 *slash = '\0'; /* remove pathname component */
555 modebuf[0] = '.'; /* use current directory */
559 if ( stat( modebuf, &stbuf ) != 0 ) {
560 return( mode & DEFMASK ); /* bail out... can't stat dir? */
563 return( mode & stbuf.st_mode );
567 * Use mkdir() with mode bits taken from ad_mode().
570 ad_mkdir( path, mode )
575 syslog (LOG_INFO, "ad_mkdir: Creating directory with mode %d", mode);
577 return mkdir( path, ad_mode( path, mode ) );
582 * It's not possible to open the header file O_RDONLY -- the read
583 * will fail and return an error. this refcounts things now.
585 int ad_open( path, adflags, oflags, mode, ad )
587 int adflags, oflags, mode;
590 const struct entry *eid;
596 if (ad->ad_inited != AD_INITED) {
599 adf_lock_init(&ad->ad_df);
600 adf_lock_init(&ad->ad_hf);
601 #ifdef USE_MMAPPED_HEADERS
602 ad->ad_data = MAP_FAILED;
604 ad->ad_inited = AD_INITED;
607 if (adflags & ADFLAGS_DF) {
608 if (ad_dfileno(ad) == -1) {
609 if (( ad->ad_df.adf_fd =
610 open( path, oflags, ad_mode( path, mode ) )) < 0 ) {
613 ad->ad_df.adf_off = 0;
614 ad->ad_df.adf_flags = oflags;
616 ad->ad_df.adf_refcount++;
619 if (adflags & ADFLAGS_HF) {
620 if (ad_hfileno(ad) == -1) {
621 ad_p = ad_path( path, adflags );
622 admode = ad_mode( ad_p, mode ); /* FIXME? */
624 hoflags = oflags & ~O_CREAT;
625 if (( ad->ad_hf.adf_fd = open( ad_p, hoflags, admode )) < 0 ) {
626 if ( errno == ENOENT && hoflags != oflags ) {
628 * We're expecting to create a new adouble header file,
632 if (( ad->ad_hf.adf_fd = open( ad_p, oflags,
635 * Probably .AppleDouble doesn't exist, try to
638 if ((errno == ENOENT) &&
639 ((adflags & ADFLAGS_NOADOUBLE) == 0)) {
640 if (( slash = strrchr( ad_p, '/' )) == NULL ) {
641 ad_close( ad, adflags );
646 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
647 ad_close( ad, adflags );
651 if (( ad->ad_hf.adf_fd =
652 open( ad_p, oflags, ad_mode( ad_p, mode) )) < 0 ) {
653 ad_close( ad, adflags );
657 ad_close( ad, adflags );
661 ad->ad_hf.adf_flags = oflags;
663 ad_close( ad, adflags );
666 } else if ((fstat(ad->ad_hf.adf_fd, &st) == 0) &&
668 /* for 0 length files, treat them as new. */
669 ad->ad_hf.adf_flags = oflags;
671 ad->ad_hf.adf_flags = hoflags;
673 ad->ad_hf.adf_off = 0;
676 * This is a new adouble header file. Initialize the structure,
677 * instead of reading it.
679 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
680 if ( ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT )) {
683 ad->ad_magic = AD_MAGIC;
684 ad->ad_version = AD_VERSION;
685 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
687 #ifdef USE_MMAPPED_HEADERS
688 /* truncate the header file and mmap it. */
689 ftruncate(ad->ad_hf.adf_fd, AD_DATASZ);
690 ad->ad_data = mmap(NULL, AD_DATASZ, PROT_READ | PROT_WRITE,
691 MAP_SHARED, ad->ad_hf.adf_fd, 0);
692 if (ad->ad_data == MAP_FAILED) {
693 ad_close(ad, adflags);
697 memset(ad->ad_data, 0, sizeof(ad->ad_data));
702 ad->ad_eid[eid->id].ade_off = eid->offset;
703 ad->ad_eid[eid->id].ade_len = eid->len;
707 /* put something sane in the directory finderinfo */
708 if (adflags & ADFLAGS_DIR) {
709 /* set default view */
710 ashort = htons(FINDERINFO_CLOSEDVIEW);
711 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
712 &ashort, sizeof(ashort));
714 /* set default creator/type fields */
715 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,
717 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,
721 /* make things invisible */
722 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
723 ashort = htons(ATTRBIT_INVISIBLE);
724 ad_setattr(ad, ashort);
725 ashort = htons(FINDERINFO_INVISIBLE);
726 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
727 &ashort, sizeof(ashort));
730 if (gettimeofday(&tv, NULL) < 0) {
731 ad_close(ad, adflags);
735 /* put something sane in the date fields */
736 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, tv.tv_sec);
737 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, tv.tv_sec);
738 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, tv.tv_sec);
739 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
743 * Read the adouble header in and parse it.
745 if ((ad_header_read( ad ) < 0)
746 #if AD_VERSION == AD_VERSION2
747 || (ad_v1tov2(ad, ad_p) < 0)
750 ad_close( ad, adflags );
755 ad->ad_hf.adf_refcount++;
761 /* to do this with mmap, we need the hfs fs to understand how to mmap
763 int ad_refresh(struct adouble *ad)
765 #ifdef USE_MMAPPED_HEADERS
769 if (ad->ad_hf.adf_fd < -1)
772 #ifdef USE_MMAPPED_HEADERS
773 if (ad->ad_data == MAP_FAILED)
776 /* re-read the header */
777 off = ad_getentryoff(ad, ADEID_RFORK);
778 memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof(nentries));
779 nentries = ntohs(nentries);
780 parse_entries(ad, ad->ad_data + AD_HEADER_LEN, nentries);
782 /* check to see if something screwy happened */
783 if (!ad_getentryoff(ad, ADEID_RFORK))
786 /* if there's a length discrepancy, remap the header. this shouldn't
787 * really ever happen. */
788 if (off != ad_getentryoff(ad, ADEID_RFORK)) {
789 char *buf = ad->ad_data;
791 ad->ad_data = mmap(NULL, ad_getentryoff(ad, ADEID_RFORK),
792 PROT_READ | PROT_WRITE,
793 (ad_getoflags(ad, ADFLAGS_HF) & O_RDWR) ?
794 MAP_SHARED : MAP_PRIVATE, ad->ad_hf.adf_fd, 0);
795 if (ad->ad_data == MAP_FAILED) {
804 return ad_header_read(ad);