2 * $Id: ad_open.c,v 1.30.6.13 2004-05-10 18:40:33 didg 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
26 * NOTE: I don't use inline because a good compiler should be
27 * able to optimize all the static below. Didier
32 #endif /* HAVE_CONFIG_H */
36 #include <atalk/adouble.h>
37 #include <sys/param.h>
38 #include <atalk/logger.h>
40 #include <atalk/util.h>
43 #include "ad_private.h"
46 #define MAX(a, b) ((a) < (b) ? (b) : (a))
50 * AppleDouble entry default offsets.
51 * The layout looks like this:
53 * this is the v1 layout:
55 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
57 * we need to change it to look like this:
60 * field length (in bytes)
63 * FILEDATESI 16 replaces FILEI
67 * SHORTNAME 12 8.3 new
70 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
71 * and add in the new fields.
73 * NOTE: the HFS module will need similar modifications to interact with
77 #define ADEDOFF_MAGIC (0)
78 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
79 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
80 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
82 /* initial lengths of some of the fields */
83 #define ADEDLEN_INIT 0
85 /* make sure we don't redefine ADEDOFF_FILEI */
88 #endif /* ADEDOFF_FILEI */
90 #define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
91 #define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
92 #define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
93 #define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
94 #define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
96 /* i stick things in a slightly different order than their eid order in
97 * case i ever want to separate RootInfo behaviour from the rest of the
99 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
100 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
101 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
102 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
103 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
104 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
105 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
106 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
107 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
108 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
109 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
110 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
112 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
114 #define ADEID_NUM_OSX 2
115 #define ADEDOFF_FINDERI_OSX (AD_HEADER_LEN + ADEID_NUM_OSX*AD_ENTRY_LEN)
116 #define ADEDOFF_RFORK_OSX (ADEDOFF_FINDERI_OSX + ADEDLEN_FINDERI)
118 /* we keep local copies of a bunch of stuff so that we can initialize things
121 /* Bits in the finderinfo data.
122 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
124 #define FINDERINFO_CUSTOMICON 0x4
125 #define FINDERINFO_CLOSEDVIEW 0x100
127 /* offsets in finderinfo */
128 #define FINDERINFO_FRTYPEOFF 0
129 #define FINDERINFO_FRCREATOFF 4
130 #define FINDERINFO_FRFLAGOFF 8
131 #define FINDERINFO_FRVIEWOFF 14
133 /* invisible bit for dot files */
134 #define ATTRBIT_INVISIBLE (1 << 0)
135 #define FINDERINFO_INVISIBLE (1 << 14)
137 /* this is to prevent changing timezones from causing problems with
138 localtime volumes. the screw-up is 30 years. we use a delta of 5
140 #define TIMEWARP_DELTA 157680000
144 u_int32_t id, offset, len;
147 static const struct entry entry_order1[ADEID_NUM_V1 +1] = {
148 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT}, /* 3 */
149 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT}, /* 4 */
150 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI}, /* 7 */
151 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI}, /* 9 */
152 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT}, /* 2 */
156 #if AD_VERSION == AD_VERSION1
157 #define DISK_EID(ad, a) (a)
159 #else /* AD_VERSION == AD_VERSION2 */
161 static u_int32_t get_eid(struct adouble *ad, u_int32_t eid)
165 if (ad->ad_version == AD_VERSION1)
168 return ADEID_PRIVDEV;
170 return ADEID_PRIVINO;
172 return ADEID_PRIVSYN;
179 #define DISK_EID(ad, a) get_eid(ad, a)
181 static const struct entry entry_order2[ADEID_NUM_V2 +1] = {
182 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
183 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
184 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
185 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
186 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
187 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
188 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
189 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
190 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
191 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
192 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
193 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
194 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
199 /* OS X adouble finder info and resource fork only
201 static const struct entry entry_order_osx[ADEID_NUM_OSX +1] = {
202 {ADEID_FINDERI, ADEDOFF_FINDERI_OSX, ADEDLEN_FINDERI},
203 {ADEID_RFORK, ADEDOFF_RFORK_OSX, ADEDLEN_INIT},
208 #endif /* AD_VERSION == AD_VERSION2 */
210 #if AD_VERSION == AD_VERSION2
212 static int ad_update(struct adouble *ad, const char *path)
215 u_int16_t nentries = 0;
216 off_t off, shiftdata=0;
217 const struct entry *eid;
218 static off_t entry_len[ADEID_MAX];
219 static char databuf[ADEID_MAX][256], *buf;
222 /* check to see if we should convert this header. */
223 if (!path || (ad->ad_flags != AD_VERSION2))
226 if (!(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
227 /* we were unable to open the file read write the last time
232 if (ad->ad_eid[ADEID_RFORK].ade_off)
233 shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
235 memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof( nentries ));
236 nentries = ntohs( nentries );
238 if ( shiftdata == 0 && nentries == ADEID_NUM_V2)
241 memset(entry_len, 0, sizeof(entry_len));
242 memset(databuf, 0, sizeof(databuf));
244 /* bail if we can't get a lock */
245 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
248 if ((fd = open(path, O_RDWR)) < 0)
251 if (fstat(fd, &st) ||
252 sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
255 if (st.st_size > 0x7fffffff) {
256 LOG(log_debug, logtype_default, "ad_update: file '%s' too big for update.", path);
259 /* last place for failure. */
260 if ((void *) (buf = (char *)
261 mmap(NULL, st.st_size + shiftdata,
262 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
267 off = ad->ad_eid[ADEID_RFORK].ade_off;
269 /* move the RFORK. this assumes that the RFORK is at the end */
271 memmove(buf + ADEDOFF_RFORK_V2, buf + off, ad->ad_eid[ADEID_RFORK].ade_len);
274 munmap(buf, st.st_size + shiftdata);
277 /* now, fix up our copy of the header */
278 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
280 /* save the header entries */
283 if( ad->ad_eid[eid->id].ade_off != 0) {
284 if ( eid->id > 2 && ad->ad_eid[eid->id].ade_len < 256)
285 memcpy( databuf[eid->id], ad->ad_data +ad->ad_eid[eid->id].ade_off, ad->ad_eid[eid->id].ade_len);
286 entry_len[eid->id] = ad->ad_eid[eid->id].ade_len;
291 memset(ad->ad_data + AD_HEADER_LEN, 0, AD_DATASZ - AD_HEADER_LEN);
293 /* copy the saved entries to the new header */
296 if ( eid->id > 2 && entry_len[eid->id] > 0) {
297 memcpy(ad->ad_data+eid->offset, databuf[eid->id], entry_len[eid->id]);
299 ad->ad_eid[eid->id].ade_off = eid->offset;
300 ad->ad_eid[eid->id].ade_len = entry_len[eid->id];
304 /* rebuild the header and cleanup */
305 ad_flush(ad, ADFLAGS_HF );
306 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
308 LOG(log_debug, logtype_default, "updated AD2 header %s", path);
313 sys_ftruncate(fd, st.st_size);
317 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
323 /* FIXME work only if < 2GB */
324 static int ad_v1tov2(struct adouble *ad, const char *path)
330 /* use resource fork offset from file */
333 /* check to see if we should convert this header. */
334 if (!path || (ad->ad_version != AD_VERSION1))
337 /* we want version1 anyway */
338 if (ad->ad_flags != AD_VERSION2)
341 if (!(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
342 /* we were unable to open the file read write the last time
348 /* we don't really know what we want */
349 ad->ad_flags = ad->ad_version;
353 /* convert from v1 to v2. what does this mean?
354 * 1) change FILEI into FILEDATESI
355 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
356 * 3) move FILEI attributes into AFPFILEI
357 * 4) initialize ACCESS field of FILEDATESI.
358 * 5) move the resource fork
361 /* bail if we can't get a lock */
362 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
365 if ((fd = open(path, O_RDWR)) < 0)
368 if (ad->ad_eid[ADEID_RFORK].ade_off) {
369 shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
372 shiftdata = ADEDOFF_RFORK_V2 -ADEDOFF_RFORK_V1; /* 136 */
375 if (fstat(fd, &st) ||
376 sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
379 if (st.st_size > 0x7fffffff) {
380 LOG(log_debug, logtype_default, "ad_v1tov2: file too big.");
384 /* last place for failure. */
385 if ((void *) (buf = (char *)
386 mmap(NULL, st.st_size + shiftdata,
387 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
392 off = ad->ad_eid[ADEID_RFORK].ade_off;
394 /* move the RFORK. this assumes that the RFORK is at the end */
396 memmove(buf + ADEDOFF_RFORK_V2, buf + off, ad->ad_eid[ADEID_RFORK].ade_len);
399 munmap(buf, st.st_size + shiftdata);
402 /* now, fix up our copy of the header */
403 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
405 /* replace FILEI with FILEDATESI */
406 ad_getattr(ad, &attr);
407 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
408 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
409 ad->ad_eid[ADEID_FILEI].ade_off = 0;
410 ad->ad_eid[ADEID_FILEI].ade_len = 0;
412 /* add in the new entries */
413 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
414 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
415 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
416 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
417 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
418 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
419 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
420 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
422 ad->ad_eid[ADEID_PRIVDEV].ade_off = ADEDOFF_PRIVDEV;
423 ad->ad_eid[ADEID_PRIVDEV].ade_len = ADEDLEN_INIT;
424 ad->ad_eid[ADEID_PRIVINO].ade_off = ADEDOFF_PRIVINO;
425 ad->ad_eid[ADEID_PRIVINO].ade_len = ADEDLEN_INIT;
426 ad->ad_eid[ADEID_PRIVSYN].ade_off = ADEDOFF_PRIVSYN;
427 ad->ad_eid[ADEID_PRIVSYN].ade_len = ADEDLEN_INIT;
428 ad->ad_eid[ADEID_PRIVID].ade_off = ADEDOFF_PRIVID;
429 ad->ad_eid[ADEID_PRIVID].ade_len = ADEDLEN_INIT;
431 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
432 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
433 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
434 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
435 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
438 ad->ad_version = AD_VERSION2;
440 /* move our data buffer to make space for the new entries. */
441 memmove(ad->ad_data + ADEDOFF_NAME_V2, ad->ad_data + ADEDOFF_NAME_V1,
442 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
444 /* now, fill in the space with appropriate stuff. we're
445 operating as a v2 file now. */
446 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
447 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
448 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
449 ad_setattr(ad, attr);
450 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
451 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
453 /* rebuild the header and cleanup */
454 ad_flush(ad, ADFLAGS_HF );
455 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
460 sys_ftruncate(fd, st.st_size);
464 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
468 #endif /* AD_VERSION == AD_VERSION2 */
471 mode_t ad_hf_mode (mode_t mode)
473 /* we always need RW mode for file owner */
475 /* fnctl lock need write access */
476 if ((mode & S_IRUSR))
478 if ((mode & S_IRGRP))
480 if ((mode & S_IROTH))
482 /* if write mode set add read mode */
483 if ((mode & S_IWUSR))
485 if ((mode & S_IWGRP))
487 if ((mode & S_IWOTH))
495 /* -------------------------------------
498 static void parse_entries(struct adouble *ad, char *buf,
501 u_int32_t eid, len, off;
504 /* now, read in the entry bits */
505 for (; nentries > 0; nentries-- ) {
506 memcpy(&eid, buf, sizeof( eid ));
507 eid = DISK_EID(ad, ntohl( eid ));
508 buf += sizeof( eid );
509 memcpy(&off, buf, sizeof( off ));
511 buf += sizeof( off );
512 memcpy(&len, buf, sizeof( len ));
514 buf += sizeof( len );
516 if ( 0 < eid && eid < ADEID_MAX ) {
517 ad->ad_eid[ eid ].ade_off = off;
518 ad->ad_eid[ eid ].ade_len = len;
519 } else if (!warning) {
521 LOG(log_debug, logtype_default, "ad_refresh: nentries %hd eid %d",
528 /* this reads enough of the header so that we can figure out all of
529 * the entry lengths and offsets. once that's done, we just read/mmap
530 * the rest of the header in.
532 * NOTE: we're assuming that the resource fork is kept at the end of
533 * the file. also, mmapping won't work for the hfs fs until it
534 * understands how to mmap header files. */
535 static int ad_header_read(struct adouble *ad, struct stat *hst)
537 char *buf = ad->ad_data;
541 static int warning = 0;
544 /* read the header */
545 if ((header_len = adf_pread( &ad->ad_hf, buf, sizeof(ad->ad_data), 0)) < 0) {
548 if (header_len < AD_HEADER_LEN) {
553 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
554 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
556 /* tag broken v1 headers. just assume they're all right.
557 * we detect two cases: null magic/version
558 * byte swapped magic/version
559 * XXX: in the future, you'll need the v1compat flag.
560 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
561 if (!ad->ad_magic && !ad->ad_version) {
563 LOG(log_debug, logtype_default, "notice: fixing up null v1 magic/version.");
566 ad->ad_magic = AD_MAGIC;
567 ad->ad_version = AD_VERSION1;
569 } else if (ad->ad_magic == AD_MAGIC && ad->ad_version == AD_VERSION1) {
571 LOG(log_debug, logtype_default, "notice: fixing up byte-swapped v1 magic/version.");
576 ad->ad_magic = ntohl( ad->ad_magic );
577 ad->ad_version = ntohl( ad->ad_version );
580 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
581 #if AD_VERSION == AD_VERSION2
582 && (ad->ad_version != AD_VERSION2)
583 #endif /* AD_VERSION == AD_VERSION2 */
586 LOG(log_debug, logtype_default, "ad_open: can't parse AppleDouble header.");
590 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
591 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
592 nentries = ntohs( nentries );
594 /* read in all the entry headers. if we have more than the
595 * maximum, just hope that the rfork is specified early on. */
596 len = nentries*AD_ENTRY_LEN;
598 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
599 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
601 buf += AD_HEADER_LEN;
602 if (len > header_len - AD_HEADER_LEN) {
604 LOG(log_debug, logtype_default, "ad_header_read: can't read entry info.");
608 /* figure out all of the entry offsets and lengths. if we aren't
609 * able to read a resource fork entry, bail. */
610 nentries = len / AD_ENTRY_LEN;
611 parse_entries(ad, buf, nentries);
612 if (!ad_getentryoff(ad, ADEID_RFORK)
613 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
616 LOG(log_debug, logtype_default, "ad_header_read: problem with rfork entry offset.");
620 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
622 LOG(log_debug, logtype_default, "ad_header_read: can't read in entries.");
628 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
629 return 1; /* fail silently */
632 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
634 /* fix up broken dates */
635 if (ad->ad_version == AD_VERSION1) {
638 /* check to see if the ad date is wrong. just see if we have
639 * a modification date in the future. */
640 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
641 (aint > TIMEWARP_DELTA + hst->st_mtime)) {
642 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
643 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
644 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
645 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
646 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
653 /* ---------------------------------------
654 * Put the .AppleDouble where it needs to be:
658 * \ b/.AppleDouble/.Parent
660 * FIXME: should do something for pathname > MAXPATHLEN
663 ad_path( path, adflags )
667 static char pathbuf[ MAXPATHLEN + 1];
668 char c, *slash, buf[MAXPATHLEN + 1];
671 l = strlcpy(buf, path, MAXPATHLEN +1);
672 if ( adflags & ADFLAGS_DIR ) {
673 strcpy( pathbuf, buf);
674 if ( *buf != '\0' && l < MAXPATHLEN) {
680 if (NULL != ( slash = strrchr( buf, '/' )) ) {
683 strcpy( pathbuf, buf);
690 strlcat( pathbuf, ".AppleDouble/", MAXPATHLEN +1);
691 strlcat( pathbuf, slash, MAXPATHLEN +1);
696 /* ---------------------------------------
697 * Put the resource fork where it needs to be:
701 ad_path_osx( path, adflags )
705 static char pathbuf[ MAXPATHLEN + 1];
706 char c, *slash, buf[MAXPATHLEN + 1];
708 if (!strcmp(path,".")) {
710 getcwd(buf, MAXPATHLEN);
713 strncpy(buf, path, MAXPATHLEN);
715 if (NULL != ( slash = strrchr( buf, '/' )) ) {
718 strncpy( pathbuf, buf, MAXPATHLEN);
724 strncat( pathbuf, "._", MAXPATHLEN - strlen(pathbuf));
725 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
730 * Support inherited protection modes for AppleDouble files. The supplied
731 * mode is ANDed with the parent directory's mask value in lieu of "umask",
732 * and that value is returned.
735 #define DEFMASK 07700 /* be conservative */
741 static char modebuf[ MAXPATHLEN + 1];
745 if ( (len = strlen( path )) >= MAXPATHLEN ) {
746 errno = ENAMETOOLONG;
747 return NULL; /* can't do it */
751 * For a path with directories in it, remove the final component
752 * (path or subdirectory name) to get the name we want to stat.
753 * For a path which is just a filename, use "." instead.
755 strcpy( modebuf, path );
756 slash = strrchr( modebuf, '/' );
757 /* is last char a '/' */
758 if (slash && slash[1] == 0) {
759 while (modebuf < slash && slash[-1] == '/') {
762 if (modebuf < slash) {
763 *slash = '\0'; /* remove pathname component */
764 slash = strrchr( modebuf, '/' );
768 *slash = '\0'; /* remove pathname component */
770 modebuf[0] = '.'; /* use current directory */
776 /* ---------------- */
777 static uid_t default_uid = -1;
779 int ad_setfuid(const uid_t id)
785 /* ---------------- */
786 uid_t ad_getfuid(void)
792 return inode of path parent directory
794 int ad_stat(const char *path, struct stat *stbuf)
803 return stat( p, stbuf );
807 if we are root change path user/ group
808 It can be a native function for BSD cf. FAQ.Q10
809 path: pathname to chown
810 stbuf: parent directory inode
812 use fstat and fchown or lchown with linux?
814 #define EMULATE_SUIDDIR
816 static int ad_chown(const char *path, struct stat *stbuf)
819 #ifdef EMULATE_SUIDDIR
822 if (default_uid != -1) {
823 /* we are root (admin) */
824 id = (default_uid)?default_uid:stbuf->st_uid;
825 ret = chown( path, id, stbuf->st_gid );
832 return access right and inode of path parent directory
834 static int ad_mode_st(const char *path, int *mode, struct stat *stbuf)
839 if (ad_stat(path, stbuf) != 0) {
843 *mode &= stbuf->st_mode;
848 return access right of path parent directory
851 ad_mode( path, mode )
856 ad_mode_st(path, &mode, &stbuf);
861 * Use mkdir() with mode bits taken from ad_mode().
864 ad_mkdir( path, mode )
873 LOG(log_info, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
876 st_invalid = ad_mode_st(path, &mode, &stbuf);
877 ret = mkdir( path, mode );
878 if (ret || st_invalid)
880 ad_chown(path, &stbuf);
885 /* ----------------- */
886 static int ad_error(struct adouble *ad, int adflags)
889 if ((adflags & ADFLAGS_NOHF)) {
890 /* FIXME double check : set header offset ?*/
893 if ((adflags & ADFLAGS_DF)) {
894 ad_close( ad, ADFLAGS_DF );
900 static int new_rfork(const char *path, struct adouble *ad, int adflags);
905 #define AD_SET(a) a = 0
908 void ad_init(struct adouble *ad, int flags)
910 memset( ad, 0, sizeof( struct adouble ) );
911 ad->ad_flags = flags;
912 if (flags == AD_VERSION2_OSX) {
913 ad->ad_path = ad_path_osx;
916 ad->ad_path = ad_path;
920 /* -------------------
921 * It's not possible to open the header file O_RDONLY -- the read
922 * will fail and return an error. this refcounts things now.
924 int ad_open( path, adflags, oflags, mode, ad )
926 int adflags, oflags, mode;
935 if (ad->ad_inited != AD_INITED) {
938 adf_lock_init(&ad->ad_df);
939 adf_lock_init(&ad->ad_hf);
940 ad->ad_inited = AD_INITED;
944 if ((adflags & ADFLAGS_DF)) {
945 if (ad_dfileno(ad) == -1) {
946 hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
948 st_invalid = ad_mode_st(path, &admode, &st);
949 ad->ad_df.adf_fd =open( path, hoflags, admode );
950 if (ad->ad_df.adf_fd < 0 ) {
951 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
953 ad->ad_df.adf_fd =open( path, hoflags, admode );
956 if ( ad->ad_df.adf_fd < 0)
959 AD_SET(ad->ad_df.adf_off);
960 ad->ad_df.adf_flags = hoflags;
961 if ((oflags & O_CREAT) && !st_invalid) {
962 /* just created, set owner if admin (root) */
967 /* the file is already open... but */
968 if ((oflags & ( O_RDWR | O_WRONLY)) && /* we want write access */
969 !(ad->ad_df.adf_flags & ( O_RDWR | O_WRONLY))) /* and it was denied the first time */
975 * for now ad_open is never called with O_TRUNC or O_EXCL if the file is
976 * already open. Should we check for it? ie
978 * O_TRUNC --> truncate the fork.
979 * idem for ressource fork.
982 open_df = ADFLAGS_DF;
983 ad->ad_df.adf_refcount++;
986 if (!(adflags & ADFLAGS_HF))
989 if (ad_hfileno(ad) != -1) { /* the file is already open */
990 if ((oflags & ( O_RDWR | O_WRONLY)) &&
991 !(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
993 /* don't call with ADFLAGS_HF because we didn't open ressource fork */
994 ad_close( ad, open_df );
1000 ad->ad_hf.adf_refcount++;
1004 ad_p = ad->ad_path( path, adflags );
1006 hoflags = oflags & ~O_CREAT;
1007 hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
1008 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
1009 if (ad->ad_hf.adf_fd < 0 ) {
1010 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
1011 hoflags = oflags & ~O_CREAT;
1012 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
1016 if ( ad->ad_hf.adf_fd < 0 ) {
1017 if (errno == ENOENT && (oflags & O_CREAT) ) {
1019 * We're expecting to create a new adouble header file,
1021 * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
1025 st_invalid = ad_mode_st(ad_p, &admode, &st);
1026 admode = ad_hf_mode(admode);
1027 if ( errno == ENOENT && !(adflags & ADFLAGS_NOADOUBLE) && ad->ad_flags != AD_VERSION2_OSX) {
1029 * Probably .AppleDouble doesn't exist, try to
1032 if (NULL == ( slash = strrchr( ad_p, '/' )) ) {
1033 return ad_error(ad, adflags);
1037 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
1038 return ad_error(ad, adflags);
1042 st_invalid = ad_mode_st(ad_p, &admode, &st);
1043 admode = ad_hf_mode(admode);
1045 /* retry with O_CREAT */
1046 ad->ad_hf.adf_fd = open( ad_p, oflags,admode );
1047 if ( ad->ad_hf.adf_fd < 0 ) {
1048 return ad_error(ad, adflags);
1050 ad->ad_hf.adf_flags = oflags;
1051 /* just created, set owner if admin owner (root) */
1053 ad_chown(ad_p, &st);
1057 return ad_error(ad, adflags);
1059 } else if (fstat(ad->ad_hf.adf_fd, &st) == 0 && st.st_size == 0) {
1060 /* for 0 length files, treat them as new. */
1061 ad->ad_hf.adf_flags = hoflags| O_TRUNC;
1063 ad->ad_hf.adf_flags = hoflags;
1065 AD_SET(ad->ad_hf.adf_off);
1067 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1068 ad->ad_hf.adf_refcount++;
1069 if ((ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT ))) {
1071 * This is a new adouble header file. Initialize the structure,
1072 * instead of reading it.
1074 if (new_rfork(path, ad, adflags) < 0) {
1076 /* the file is already deleted, perm, whatever, so return an error*/
1077 ad_close(ad, adflags);
1082 /* Read the adouble header in and parse it.*/
1083 if ((ad_header_read( ad , &st) < 0)
1084 #if AD_VERSION == AD_VERSION2
1085 || (ad_v1tov2(ad, ad_p) < 0) || (ad_update(ad, ad_p) < 0)
1086 #endif /* AD_VERSION == AD_VERSION2 */
1090 ad_close( ad, adflags );
1098 /* ----------------------------------- */
1099 static int new_rfork(const char *path, struct adouble *ad, int adflags)
1101 const struct entry *eid;
1105 ad->ad_magic = AD_MAGIC;
1106 ad->ad_version = ad->ad_flags & 0x0f0000;
1107 if (!ad->ad_version) {
1108 ad->ad_version = AD_VERSION;
1111 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
1112 memset(ad->ad_data, 0, sizeof(ad->ad_data));
1114 #if AD_VERSION == AD_VERSION2
1115 if (ad->ad_flags == AD_VERSION2)
1117 else if (ad->ad_flags == AD_VERSION2_OSX)
1118 eid = entry_order_osx;
1124 ad->ad_eid[eid->id].ade_off = eid->offset;
1125 ad->ad_eid[eid->id].ade_len = eid->len;
1129 /* put something sane in the directory finderinfo */
1130 if ((adflags & ADFLAGS_DIR)) {
1131 /* set default view */
1132 ashort = htons(FINDERINFO_CLOSEDVIEW);
1133 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
1134 &ashort, sizeof(ashort));
1136 /* set default creator/type fields */
1137 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"TEXT", 4);
1138 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"UNIX", 4);
1141 /* make things invisible */
1142 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
1143 ashort = htons(ATTRBIT_INVISIBLE);
1144 ad_setattr(ad, ashort);
1145 ashort = htons(FINDERINFO_INVISIBLE);
1146 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
1147 &ashort, sizeof(ashort));
1150 if (stat(path, &st) < 0) {
1154 /* put something sane in the date fields */
1155 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
1156 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
1157 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
1158 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
1162 /* to do this with mmap, we need the hfs fs to understand how to mmap
1164 int ad_refresh(struct adouble *ad)
1167 if (ad->ad_hf.adf_fd < -1)
1170 return ad_header_read(ad, NULL);