2 * Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
3 * Copyright (c) 1990,1991 Regents of The University of Michigan.
4 * Copyright (c) 2010 Frank Lahm
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
30 * Part of Netatalk's AppleDouble implementatation
31 * @sa include/atalk/adouble.h
36 #endif /* HAVE_CONFIG_H */
39 #include <sys/param.h>
43 #include <arpa/inet.h>
45 #include <atalk/logger.h>
46 #include <atalk/adouble.h>
47 #include <atalk/util.h>
48 #include <atalk/unix.h>
50 #include <atalk/bstrlib.h>
51 #include <atalk/bstradd.h>
52 #include <atalk/compat.h>
53 #include <atalk/errchk.h>
54 #include <atalk/volume.h>
58 #define ADEDOFF_MAGIC (0)
59 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
60 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
61 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
63 /* initial lengths of some of the fields */
64 #define ADEDLEN_INIT 0
66 /* i stick things in a slightly different order than their eid order in
67 * case i ever want to separate RootInfo behaviour from the rest of the
71 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
72 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
73 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
74 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
75 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
76 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
77 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
78 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
79 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
80 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
81 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
82 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
83 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
86 #define ADEDOFF_FINDERI_EA (AD_HEADER_LEN + ADEID_NUM_EA * AD_ENTRY_LEN)
87 #define ADEDOFF_COMMENT_EA (ADEDOFF_FINDERI_EA + ADEDLEN_FINDERI)
88 #define ADEDOFF_FILEDATESI_EA (ADEDOFF_COMMENT_EA + ADEDLEN_COMMENT)
89 #define ADEDOFF_AFPFILEI_EA (ADEDOFF_FILEDATESI_EA + ADEDLEN_FILEDATESI)
90 #define ADEDOFF_PRIVDEV_EA (ADEDOFF_AFPFILEI_EA + ADEDLEN_AFPFILEI)
91 #define ADEDOFF_PRIVINO_EA (ADEDOFF_PRIVDEV_EA + ADEDLEN_PRIVDEV)
92 #define ADEDOFF_PRIVSYN_EA (ADEDOFF_PRIVINO_EA + ADEDLEN_PRIVINO)
93 #define ADEDOFF_PRIVID_EA (ADEDOFF_PRIVSYN_EA + ADEDLEN_PRIVSYN)
95 /* this is to prevent changing timezones from causing problems with
96 localtime volumes. the screw-up is 30 years. we use a delta of 5 years */
97 #define TIMEWARP_DELTA 157680000
100 uint32_t id, offset, len;
103 /* --------------------------- */
104 static uid_t default_uid = -1;
106 /* Forward declarations */
107 static int ad_mkrf(const char *path);
108 static int ad_header_read(const char *path, struct adouble *ad, const struct stat *hst);
109 static int ad_header_upgrade(struct adouble *ad, const char *name);
112 static int ad_mkrf_ea(const char *path);
114 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst);
115 static int ad_header_upgrade_ea(struct adouble *ad, const char *name);
116 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad);
117 static int ad_mkrf_osx(const char *path);
120 static struct adouble_fops ad_adouble = {
123 &ad_rebuild_adouble_header_v2,
128 static struct adouble_fops ad_adouble_ea = {
136 &ad_rebuild_adouble_header_ea,
138 &ad_header_upgrade_ea,
141 static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
142 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
143 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
144 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
145 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
146 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
147 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
148 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
149 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
150 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
151 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
152 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
153 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
154 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
158 /* Using Extended Attributes */
159 static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
160 {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
161 {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
162 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
163 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
164 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV_EA, ADEDLEN_INIT},
165 {ADEID_PRIVINO, ADEDOFF_PRIVINO_EA, ADEDLEN_INIT},
166 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN_EA, ADEDLEN_INIT},
167 {ADEID_PRIVID, ADEDOFF_PRIVID_EA, ADEDLEN_INIT},
171 #define ADFLAGS2LOGSTRBUFSIZ 128
172 const char *adflags2logstr(int adflags)
175 static char buf[ADFLAGS2LOGSTRBUFSIZ];
179 if (adflags & ADFLAGS_DF) {
180 strlcat(buf, "DF", ADFLAGS2LOGSTRBUFSIZ);
183 if (adflags & ADFLAGS_RF) {
185 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
186 strlcat(buf, "RF", ADFLAGS2LOGSTRBUFSIZ);
189 if (adflags & ADFLAGS_NORF) {
191 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
192 strlcat(buf, "NORF", ADFLAGS2LOGSTRBUFSIZ);
195 if (adflags & ADFLAGS_HF) {
197 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
198 strlcat(buf, "HF", ADFLAGS2LOGSTRBUFSIZ);
201 if (adflags & ADFLAGS_NOHF) {
203 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
204 strlcat(buf, "NOHF", ADFLAGS2LOGSTRBUFSIZ);
207 if (adflags & ADFLAGS_DIR) {
209 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
210 strlcat(buf, "DIR", ADFLAGS2LOGSTRBUFSIZ);
213 if (adflags & ADFLAGS_CHECK_OF) {
215 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
216 strlcat(buf, "OF", ADFLAGS2LOGSTRBUFSIZ);
219 if (adflags & ADFLAGS_SETSHRMD) {
221 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
222 strlcat(buf, "SHRMD", ADFLAGS2LOGSTRBUFSIZ);
225 if (adflags & ADFLAGS_RDWR) {
227 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
228 strlcat(buf, "O_RDWR", ADFLAGS2LOGSTRBUFSIZ);
231 if (adflags & ADFLAGS_RDONLY) {
233 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
234 strlcat(buf, "O_RDONLY", ADFLAGS2LOGSTRBUFSIZ);
237 if (adflags & ADFLAGS_CREATE) {
239 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
240 strlcat(buf, "O_CREAT", ADFLAGS2LOGSTRBUFSIZ);
243 if (adflags & ADFLAGS_EXCL) {
245 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
246 strlcat(buf, "O_EXCL", ADFLAGS2LOGSTRBUFSIZ);
249 if (adflags & ADFLAGS_TRUNC) {
251 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
252 strlcat(buf, "O_TRUNC", ADFLAGS2LOGSTRBUFSIZ);
259 #define OPENFLAGS2LOGSTRBUFSIZ 128
260 const char *openflags2logstr(int oflags)
263 static char buf[OPENFLAGS2LOGSTRBUFSIZ];
267 if ((oflags & O_RDONLY) || (oflags == O_RDONLY)) {
268 strlcat(buf, "O_RDONLY", OPENFLAGS2LOGSTRBUFSIZ);
271 if (oflags & O_RDWR) {
273 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
274 strlcat(buf, "O_RDWR", OPENFLAGS2LOGSTRBUFSIZ);
277 if (oflags & O_CREAT) {
279 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
280 strlcat(buf, "O_CREAT", OPENFLAGS2LOGSTRBUFSIZ);
283 if (oflags & O_TRUNC) {
285 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
286 strlcat(buf, "O_TRUNC", OPENFLAGS2LOGSTRBUFSIZ);
289 if (oflags & O_EXCL) {
291 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
292 strlcat(buf, "O_EXCL", OPENFLAGS2LOGSTRBUFSIZ);
298 static uint32_t get_eid(uint32_t eid)
303 return ADEID_PRIVDEV;
305 return ADEID_PRIVINO;
307 return ADEID_PRIVSYN;
316 * Initialize offset pointers
318 int ad_init_offsets(struct adouble *ad)
320 const struct entry *eid;
322 if (ad->ad_magic == AD_MAGIC)
325 ad->ad_magic = AD_MAGIC;
326 ad->ad_version = ad->ad_vers & 0x0f0000;
327 if (!ad->ad_version) {
328 ad->ad_version = AD_VERSION;
331 memset(ad->ad_data, 0, sizeof(ad->ad_data));
333 if (ad->ad_vers == AD_VERSION2)
335 else if (ad->ad_vers == AD_VERSION_EA)
336 eid = entry_order_ea;
341 ad->ad_eid[eid->id].ade_off = eid->offset;
342 ad->ad_eid[eid->id].ade_len = eid->len;
349 /* ----------------------------------- */
350 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
352 const struct entry *eid;
356 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\")", path);
358 if (ad_init_offsets(ad) != 0)
361 /* set default creator/type fields */
362 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
363 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
365 /* make things invisible */
366 if ((ad->ad_options & ADVOL_INVDOTS)
368 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
370 ashort = htons(ATTRBIT_INVISIBLE);
371 ad_setattr(ad, ashort);
372 ashort = htons(FINDERINFO_INVISIBLE);
373 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
376 /* put something sane in the date fields */
379 if (lstat(path, &st) != 0)
382 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
383 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
384 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
385 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
391 * Read an AppleDouble buffer, returns 0 on success, -1 if an entry was malformatted
393 static int parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
395 uint32_t eid, len, off;
398 /* now, read in the entry bits */
399 for (; nentries > 0; nentries-- ) {
400 memcpy(&eid, buf, sizeof( eid ));
401 eid = get_eid(ntohl(eid));
402 buf += sizeof( eid );
403 memcpy(&off, buf, sizeof( off ));
405 buf += sizeof( off );
406 memcpy(&len, buf, sizeof( len ));
408 buf += sizeof( len );
410 ad->ad_eid[eid].ade_off = off;
411 ad->ad_eid[eid].ade_len = len;
415 || off >= sizeof(ad->ad_data)
416 || ((eid != ADEID_RFORK) && (off + len > sizeof(ad->ad_data))))
419 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %u, off: %u, len: %u",
420 (uint)eid, (uint)off, (uint)len);
427 /* this reads enough of the header so that we can figure out all of
428 * the entry lengths and offsets. once that's done, we just read/mmap
429 * the rest of the header in.
431 * NOTE: we're assuming that the resource fork is kept at the end of
432 * the file. also, mmapping won't work for the hfs fs until it
433 * understands how to mmap header files. */
434 static int ad_header_read(const char *path, struct adouble *ad, const struct stat *hst)
436 char *buf = ad->ad_data;
442 /* read the header */
443 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
446 if (header_len < AD_HEADER_LEN) {
451 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
452 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
453 ad->ad_magic = ntohl( ad->ad_magic );
454 ad->ad_version = ntohl( ad->ad_version );
456 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
457 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
462 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
463 nentries = ntohs( nentries );
465 /* read in all the entry headers. if we have more than the
466 * maximum, just hope that the rfork is specified early on. */
467 len = nentries*AD_ENTRY_LEN;
469 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
470 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
472 buf += AD_HEADER_LEN;
473 if (len > header_len - AD_HEADER_LEN) {
474 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
479 /* figure out all of the entry offsets and lengths. if we aren't
480 * able to read a resource fork entry, bail. */
481 nentries = len / AD_ENTRY_LEN;
482 if (parse_entries(ad, buf, nentries) != 0) {
483 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
484 path ? fullpathname(path) : "");
488 if (!ad_getentryoff(ad, ADEID_RFORK)
489 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
491 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
496 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
497 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
504 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
505 return 1; /* fail silently */
509 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
514 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
515 int ad_valid_header_osx(const char *path)
519 struct adouble adosx;
520 char *buf = &adosx.ad_data[0];
523 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
525 EC_NEG1( fd = open(path, O_RDONLY) );
527 /* read the header */
528 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
530 if (header_len < AD_HEADER_LEN)
533 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
534 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
535 adosx.ad_magic = ntohl(adosx.ad_magic);
536 adosx.ad_version = ntohl(adosx.ad_version);
538 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
539 LOG(log_warning, logtype_ad, "ad_valid_header_osx(\"%s\"): not an adouble:osx file", fullpathname(path));
543 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
545 * It's a split fork created by OS X, it's not our "own" ._ file
546 * and thus not a valid header in this context.
547 * We allow enumeration and access.
552 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
561 * Convert from Apple's ._ file to Netatalk
563 * Apple's AppleDouble may contain a FinderInfo entry longer then 32 bytes
564 * containing packed xattrs. Netatalk can't deal with that, so we
565 * simply discard the packed xattrs.
567 * As we call ad_open() which might result in a recursion, just to be sure
568 * use static variable in_conversion to check for that.
570 * Returns -1 in case an error occured, 0 if no conversion was done, 1 otherwise
572 static int ad_convert_osx(const char *path, struct adouble *ad)
575 static bool in_conversion = false;
577 int finderlen = ad_getentrylen(ad, ADEID_FINDERI);
580 if (in_conversion || finderlen == ADEDLEN_FINDERI)
582 in_conversion = true;
584 LOG(log_debug, logtype_ad, "Converting OS X AppleDouble %s, FinderInfo length: %d",
585 fullpathname(path), finderlen);
587 origlen = ad_getentryoff(ad, ADEID_RFORK) + ad_getentrylen(ad, ADEID_RFORK);
589 map = mmap(NULL, origlen, PROT_WRITE, MAP_SHARED, ad_reso_fileno(ad), 0);
590 if (map == MAP_FAILED) {
591 LOG(log_error, logtype_ad, "mmap AppleDouble: %s\n", strerror(errno));
595 memmove(map + ad_getentryoff(ad, ADEID_FINDERI) + ADEDLEN_FINDERI,
596 map + ad_getentryoff(ad, ADEID_RFORK),
597 ad_getentrylen(ad, ADEID_RFORK));
599 ad_setentrylen(ad, ADEID_FINDERI, ADEDLEN_FINDERI);
600 ad->ad_rlen = ad_getentrylen(ad, ADEID_RFORK);
601 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(ad, ADEID_FINDERI) + ADEDLEN_FINDERI);
603 EC_ZERO_LOG( ftruncate(ad_reso_fileno(ad),
604 ad_getentryoff(ad, ADEID_RFORK)
605 + ad_getentrylen(ad, ADEID_RFORK)) );
607 (void)ad_rebuild_adouble_header_osx(ad, map);
608 munmap(map, origlen);
610 /* Create a metadata EA if one doesn't exit */
611 if (strlen(path) < 3)
614 ad_init_old(&adea, AD_VERSION_EA, ad->ad_options);
616 if (ad_open(&adea, path + 2, ADFLAGS_HF | ADFLAGS_RDWR | ADFLAGS_CREATE, 0666) < 0) {
617 LOG(log_error, logtype_ad, "create metadata: %s\n", strerror(errno));
620 if (adea.ad_mdp->adf_flags & O_CREAT) {
621 memcpy(ad_entry(&adea, ADEID_FINDERI),
622 ad_entry(ad, ADEID_FINDERI),
626 ad_close(&adea, ADFLAGS_HF);
629 in_conversion = false;
635 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
636 static int ad_header_read_osx(const char *path, struct adouble *ad, const struct stat *hst)
639 struct adouble adosx;
640 char *buf = &adosx.ad_data[0];
648 LOG(log_debug, logtype_ad, "ad_header_read_osx: %s", path ? fullpathname(path) : "");
649 ad_init_old(&adosx, AD_VERSION_EA, ad->ad_options);
650 memset(buf, 0, sizeof(adosx.ad_data));
651 adosx.ad_rfp->adf_fd = ad_reso_fileno(ad);
653 /* read the header */
654 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
656 if (header_len < AD_HEADER_LEN) {
661 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
662 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
663 adosx.ad_magic = ntohl(adosx.ad_magic);
664 adosx.ad_version = ntohl(adosx.ad_version);
666 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
667 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
672 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
673 nentries = ntohs(nentries);
674 len = nentries * AD_ENTRY_LEN;
676 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
677 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
679 buf += AD_HEADER_LEN;
680 if (len > header_len - AD_HEADER_LEN) {
681 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
686 nentries = len / AD_ENTRY_LEN;
687 if (parse_entries(&adosx, buf, nentries) != 0) {
688 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
689 path ? fullpathname(path) : "");
692 if (ad_getentrylen(&adosx, ADEID_FINDERI) != ADEDLEN_FINDERI) {
693 LOG(log_warning, logtype_ad, "Convert OS X to Netatalk AppleDouble: %s",
694 path ? fullpathname(path) : "");
696 if (retry_read > 0) {
697 LOG(log_error, logtype_ad, "ad_header_read_osx: %s, giving up", path ? fullpathname(path) : "");
702 if (ad_convert_osx(path, &adosx) == 1) {
709 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
710 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
711 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
713 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
720 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
723 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
724 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
730 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
736 char *buf = ad->ad_data;
738 if (ad_meta_fileno(ad) != -1)
739 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
741 header_len = sys_getxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
742 if (header_len < 1) {
743 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
747 if (header_len < AD_DATASZ_EA) {
748 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): short metadata EA", fullpathname(path));
753 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
754 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
756 ad->ad_magic = ntohl( ad->ad_magic );
757 ad->ad_version = ntohl( ad->ad_version );
759 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
760 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
765 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
766 nentries = ntohs( nentries );
767 if (nentries != ADEID_NUM_EA) {
768 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid number of entries: %d", fullpathname(path), nentries);
773 /* Now parse entries */
774 if (parse_entries(ad, buf + AD_HEADER_LEN, nentries)) {
775 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
776 path ? fullpathname(path) : "");
781 if (nentries != ADEID_NUM_EA
782 || !ad_entry(ad, ADEID_FINDERI)
783 || !ad_entry(ad, ADEID_COMMENT)
784 || !ad_entry(ad, ADEID_FILEDATESI)
785 || !ad_entry(ad, ADEID_AFPFILEI)
786 || !ad_entry(ad, ADEID_PRIVDEV)
787 || !ad_entry(ad, ADEID_PRIVINO)
788 || !ad_entry(ad, ADEID_PRIVSYN)
789 || !ad_entry(ad, ADEID_PRIVID)) {
790 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid metadata EA", fullpathname(path));
796 if (ret != 0 && errno == EINVAL) {
798 (void)sys_removexattr(path, AD_EA_META);
800 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): deleted invalid metadata EA", fullpathname(path), nentries);
807 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
810 * path: "/path/.AppleDouble/file"
811 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
813 static int ad_mkrf(const char *path)
817 * Probably .AppleDouble doesn't exist, try to mkdir it.
819 if (NULL == ( slash = strrchr( path, '/' )) ) {
824 if ( ad_mkdir( path, 0777 ) < 0 ) {
832 static int ad_mkrf_ea(const char *path _U_)
834 AFP_PANIC("ad_mkrf_ea: dont use");
839 static int ad_mkrf_osx(const char *path _U_)
845 if we are root change path user/ group
846 It can be a native function for BSD cf. FAQ.Q10
847 path: pathname to chown
848 stbuf: parent directory inode
850 use fstat and fchown or lchown with linux?
852 #define EMULATE_SUIDDIR
854 static int ad_chown(const char *path, struct stat *stbuf)
857 #ifdef EMULATE_SUIDDIR
860 if (default_uid != (uid_t)-1) {
861 /* we are root (admin) */
862 id = (default_uid)?default_uid:stbuf->st_uid;
863 ret = lchown( path, id, stbuf->st_gid );
869 #define DEFMASK 07700 /* be conservative */
872 return access right and inode of path parent directory
874 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
879 if (ad_stat(path, stbuf) != 0) {
883 *mode &= stbuf->st_mode;
887 /* --------------------------- */
888 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
893 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
895 AFP_PANIC("ad_header_upgrade_ea: dont use");
900 * Error handling for adouble header(=metadata) file open error
902 * We're called because opening ADFLAGS_HF caused an error.
903 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
904 * 2. Open non-existent ressource fork, this will just result in first read return EOF
905 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
906 * ought to close it before returning with an error condition.
908 static int ad_error(struct adouble *ad, int adflags)
911 if (adflags & ADFLAGS_NOHF) { /* 1 */
914 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
916 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
917 ad_close( ad, ADFLAGS_DF );
924 * Map ADFLAGS to open() flags
926 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
927 * @param adflags (r) flags from ad_open(..., adflags, ...)
928 * @returns mapped flags suitable for calling open()
930 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
934 if (adflags & ADFLAGS_RDWR)
936 if (adflags & ADFLAGS_RDONLY) {
937 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
938 /* need rw access for locks */
939 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
940 /* need rw access for adouble file for the case:
941 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
946 if (adflags & ADFLAGS_CREATE)
948 if (adflags & ADFLAGS_EXCL)
950 if (adflags & ADFLAGS_TRUNC)
953 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
954 oflags |= O_NOFOLLOW;
959 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
968 LOG(log_debug, logtype_ad,
969 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
970 fullpathname(path), adflags2logstr(adflags),
971 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
972 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
973 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
975 if (ad_data_fileno(ad) != -1) {
976 /* the file is already open, but we want write access: */
977 if ((adflags & ADFLAGS_RDWR)
978 /* and it was denied the first time: */
979 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
983 /* it's not new anymore */
984 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
985 ad->ad_data_fork.adf_refcount++;
989 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
992 if ((adflags & ADFLAGS_CREATE)) {
993 st_invalid = ad_mode_st(path, &admode, &st_dir);
994 if ((ad->ad_options & ADVOL_UNIXPRIV))
998 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
1000 if (ad->ad_data_fork.adf_fd == -1) {
1005 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
1008 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
1012 case OPEN_NOFOLLOW_ERRNO:
1013 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
1014 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
1015 free(ad->ad_data_fork.adf_syml);
1018 ad->ad_data_fork.adf_syml[lsz] = 0;
1019 ad->ad_data_fork.adf_fd = AD_SYMLINK;
1027 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
1029 ad->ad_data_fork.adf_flags = oflags;
1030 adf_lock_init(&ad->ad_data_fork);
1031 ad->ad_data_fork.adf_refcount++;
1034 LOG(log_debug, logtype_ad,
1035 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1036 fullpathname(path), adflags2logstr(adflags), ret,
1037 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1038 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1039 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1043 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
1047 struct stat st_meta;
1048 struct stat *pst = NULL;
1050 int oflags, nocreatflags, opened = 0;
1052 int st_invalid = -1;
1054 LOG(log_debug, logtype_ad,
1055 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1056 fullpathname(path), adflags2logstr(adflags),
1057 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1058 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1059 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1061 if (ad_meta_fileno(ad) != -1) {
1062 /* the file is already open, but we want write access: */
1063 if ((adflags & ADFLAGS_RDWR) &&
1064 /* and it was already denied: */
1065 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1069 ad_refresh(path, ad);
1070 /* it's not new anymore */
1071 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1072 ad->ad_mdp->adf_refcount++;
1076 ad_p = ad->ad_ops->ad_path(path, adflags);
1077 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
1078 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
1079 fullpathname(path), openflags2logstr(oflags));
1080 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
1082 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
1084 if (ad_meta_fileno(ad) != -1) {
1085 ad->ad_mdp->adf_flags = nocreatflags;
1091 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
1092 nocreatflags &= ~O_RDWR;
1093 nocreatflags |= O_RDONLY;
1094 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
1095 ad->ad_mdp->adf_flags = nocreatflags;
1100 if (!(oflags & O_CREAT))
1103 * We're expecting to create a new adouble header file here
1105 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
1106 fullpathname(path));
1109 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1110 if ((ad->ad_options & ADVOL_UNIXPRIV))
1112 admode = ad_hf_mode(admode);
1113 if (errno == ENOENT) {
1114 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
1116 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1117 if ((ad->ad_options & ADVOL_UNIXPRIV))
1119 admode = ad_hf_mode(admode);
1122 /* retry with O_CREAT */
1123 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1124 ad->ad_mdp->adf_flags = oflags;
1125 /* just created, set owner if admin owner (root) */
1127 ad_chown(ad_p, &st_dir);
1134 /* Now we've got a new opened fd, we need to check that in the error case */
1137 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1138 /* check for 0 length files, treat them as new. */
1139 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1140 if (st_meta.st_size == 0)
1141 ad->ad_mdp->adf_flags |= O_TRUNC;
1143 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1148 adf_lock_init(ad->ad_mdp);
1149 ad->ad_mdp->adf_refcount = 1;
1151 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1152 /* This is a new adouble header file, create it */
1153 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1156 /* Read the adouble header in and parse it.*/
1157 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1161 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1162 close(ad_meta_fileno(ad));
1163 ad_meta_fileno(ad) = -1;
1164 ad->ad_mdp->adf_refcount = 0;
1166 LOG(log_debug, logtype_ad,
1167 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1168 fullpathname(path), adflags2logstr(adflags), ret,
1169 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1170 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1171 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1175 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1181 LOG(log_debug, logtype_ad,
1182 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1183 fullpathname(path), adflags2logstr(adflags),
1184 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1185 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1186 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1188 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1190 if (ad_meta_fileno(ad) == AD_SYMLINK)
1193 if (ad_meta_fileno(ad) != -1) {
1194 /* the file is already open, but we want write access: */
1195 if ((oflags & O_RDWR) &&
1196 /* and it was already denied: */
1197 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1198 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1199 fullpathname(path), strerror(errno));
1203 /* it's not new anymore */
1204 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1206 if (oflags & O_RDWR) {
1207 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1208 if (adflags & ADFLAGS_DIR)
1209 /* For directories we open the directory RDONYL so we can later fchdir() */
1210 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1211 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1212 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1214 ad->ad_mdp->adf_flags = oflags;
1218 /* Read the adouble header in and parse it.*/
1219 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1220 if (!(adflags & ADFLAGS_CREATE)) {
1221 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1225 if ((adflags & ADFLAGS_CREATE) && (ad->ad_options & ADVOL_RO)) {
1230 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1232 /* It doesnt exist, EPERM or another error */
1233 if (!(errno == ENOATTR || errno == ENOENT)) {
1234 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1239 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1240 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1242 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1245 if (ad_meta_fileno(ad) != -1)
1246 ad->ad_mdp->adf_refcount++;
1247 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1250 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1251 close(ad_meta_fileno(ad));
1252 ad_meta_fileno(ad) = -1;
1253 ad->ad_mdp->adf_refcount = 0;
1255 LOG(log_debug, logtype_ad,
1256 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1257 fullpathname(path), adflags2logstr(adflags), ret,
1258 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1259 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1260 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1265 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1269 ad->ad_meta_refcount++;
1271 switch (ad->ad_vers) {
1273 ret = ad_open_hf_v2(path, adflags, mode, ad);
1276 ret = ad_open_hf_ea(path, adflags, mode, ad);
1284 ad->ad_meta_refcount--;
1285 ret = ad_error(ad, adflags);
1292 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1294 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1300 if (adflags & ADFLAGS_DIR)
1303 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1308 if (ad && ad_reso_fileno(ad) != -1) {
1309 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1311 } else if (ad && ad_meta_fileno(ad) != -1) {
1312 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1314 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1319 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1320 EC_ZERO( lstat(rfpath, &st));
1321 if (st.st_size > ADEDOFF_RFORK_OSX)
1322 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1327 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1335 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1340 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1341 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1344 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1346 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1348 if (AD_META_OPEN(ad))
1349 ad->ad_reso_refcount++;
1352 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1356 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1361 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1367 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1369 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1371 if (ad_reso_fileno(ad) != -1) {
1372 /* the file is already open, but we want write access: */
1373 if ((oflags & O_RDWR)
1374 /* and it was already denied: */
1375 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1379 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1380 ad->ad_reso_refcount++;
1381 ad->ad_rfp->adf_refcount++;
1382 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1386 if (ad_meta_fileno(ad) < 0)
1388 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1389 if (!(adflags & ADFLAGS_CREATE)) {
1394 if (!(adflags & ADFLAGS_RDONLY)) {
1395 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1400 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1401 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1408 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1413 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1414 AD_EA_RESO, oflags, 0666) );
1418 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1419 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1420 if (!(adflags & ADFLAGS_CREATE)) {
1425 if (!(adflags & ADFLAGS_RDONLY)) {
1426 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1431 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1432 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1439 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1444 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1445 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1451 ad->ad_rfp->adf_refcount = 1;
1452 ad->ad_rfp->adf_flags = oflags;
1453 ad->ad_reso_refcount++;
1456 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1457 if (ad->ad_rfp->adf_flags & O_CREAT) {
1458 /* This is a new adouble header file, create it */
1459 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1461 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1462 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1466 /* Read the adouble header */
1467 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1469 EC_NEG1_LOG( ad_header_read_osx(rfpath, ad, &st) );
1473 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1477 if (opened && (ad_reso_fileno(ad) != -1)) {
1478 close(ad_reso_fileno(ad));
1479 ad_reso_fileno(ad) = -1;
1480 ad->ad_reso_refcount--;
1481 ad->ad_rfp->adf_refcount = 0;
1483 if (adflags & ADFLAGS_NORF) {
1487 (void)ad_close(ad, closeflags);
1493 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1499 * Open ressource fork
1501 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1505 switch (ad->ad_vers) {
1507 ret = ad_open_rf_v2(path, adflags, mode, ad);
1510 ret = ad_open_rf_ea(path, adflags, mode, ad);
1520 /***********************************************************************************
1522 ********************************************************************************* */
1524 off_t ad_getentryoff(const struct adouble *ad, int eid)
1526 if (ad->ad_vers == AD_VERSION2)
1527 return ad->ad_eid[eid].ade_off;
1536 return ad->ad_eid[eid].ade_off;
1539 return ad->ad_eid[eid].ade_off;
1542 AFP_PANIC("What am I doing here?");
1545 const char *ad_path_ea( const char *path, int adflags _U_)
1550 const char *ad_path_osx(const char *path, int adflags _U_)
1552 static char pathbuf[ MAXPATHLEN + 1];
1553 char c, *slash, buf[MAXPATHLEN + 1];
1555 if (!strcmp(path,".")) {
1557 getcwd(buf, MAXPATHLEN);
1560 strlcpy(buf, path, MAXPATHLEN +1);
1562 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1565 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1568 pathbuf[ 0 ] = '\0';
1571 strlcat( pathbuf, "._", MAXPATHLEN +1);
1572 strlcat( pathbuf, slash, MAXPATHLEN +1);
1577 * Put the .AppleDouble where it needs to be:
1579 * / a/.AppleDouble/b
1581 * \ b/.AppleDouble/.Parent
1583 * FIXME: should do something for pathname > MAXPATHLEN
1585 const char *ad_path( const char *path, int adflags)
1587 static char pathbuf[ MAXPATHLEN + 1];
1591 if ( adflags & ADFLAGS_DIR ) {
1592 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1594 if ( l && l < MAXPATHLEN) {
1597 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1599 if (NULL != ( slash = strrchr( path, '/' )) ) {
1602 /* XXX we must return NULL here and test in the caller */
1605 memcpy( pathbuf, path, l);
1610 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1611 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1617 /* -------------------------
1618 * Support inherited protection modes for AppleDouble files. The supplied
1619 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1620 * and that value is returned.
1622 char *ad_dir(const char *path)
1624 static char modebuf[ MAXPATHLEN + 1];
1627 * For a path with directories in it, remove the final component
1628 * (path or subdirectory name) to get the name we want to stat.
1629 * For a path which is just a filename, use "." instead.
1631 slash = strrchr( path, '/' );
1636 if (len >= MAXPATHLEN) {
1637 errno = ENAMETOOLONG;
1638 return NULL; /* can't do it */
1640 memcpy( modebuf, path, len );
1641 modebuf[len] = '\0';
1642 /* is last char a '/' ? */
1643 if (slash[1] == 0) {
1644 slash = modebuf+ len;
1646 while (modebuf < slash && slash[-1] == '/') {
1649 if (modebuf == slash) {
1653 while (modebuf < slash && *slash != '/') {
1656 if (modebuf == slash) {
1659 *slash = '\0'; /* remove pathname component */
1664 modebuf[0] = '.'; /* use current directory */
1669 int ad_setfuid(const uid_t id)
1675 /* ---------------- */
1676 uid_t ad_getfuid(void)
1682 stat path parent directory
1684 int ad_stat(const char *path, struct stat *stbuf)
1691 return stat( p, stbuf );
1695 return access right of path parent directory
1697 int ad_mode( const char *path, mode_t mode)
1700 ad_mode_st(path, &mode, &stbuf);
1705 * Use mkdir() with mode bits taken from ad_mode().
1707 int ad_mkdir( const char *path, mode_t mode)
1713 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1714 path, mode, getcwdpath());
1716 st_invalid = ad_mode_st(path, &mode, &stbuf);
1717 ret = mkdir( path, mode );
1718 if (ret || st_invalid)
1720 ad_chown(path, &stbuf);
1725 static void ad_init_func(struct adouble *ad)
1727 switch (ad->ad_vers) {
1729 ad->ad_ops = &ad_adouble;
1730 ad->ad_rfp = &ad->ad_resource_fork;
1731 ad->ad_mdp = &ad->ad_resource_fork;
1734 ad->ad_ops = &ad_adouble_ea;
1735 ad->ad_rfp = &ad->ad_resource_fork;
1736 ad->ad_mdp = &ad->ad_data_fork;
1739 AFP_PANIC("ad_init: unknown AD version");
1743 ad_data_fileno(ad) = -1;
1744 ad_reso_fileno(ad) = -1;
1745 ad_meta_fileno(ad) = -1;
1746 ad->ad_refcount = 1;
1751 void ad_init_old(struct adouble *ad, int flags, int options)
1753 memset(ad, 0, sizeof(struct adouble));
1754 ad->ad_vers = flags;
1755 ad->ad_options = options;
1759 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1761 memset(ad, 0, sizeof(struct adouble));
1762 ad->ad_vers = vol->v_adouble;
1763 ad->ad_options = vol->v_ad_options;
1768 * Open data-, metadata(header)- or ressource fork
1770 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1771 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1773 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1776 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1779 * Open a files data fork, metadata fork or ressource fork.
1781 * @param ad (rw) pointer to struct adouble
1782 * @param path (r) Path to file or directory
1783 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1784 * ADFLAGS_DF: open data fork
1785 * ADFLAGS_RF: open ressource fork
1786 * ADFLAGS_HF: open header (metadata) file
1787 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1788 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1789 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1791 * Access mode for the forks:
1792 * ADFLAGS_RDONLY: open read only
1793 * ADFLAGS_RDWR: open read write
1796 * ADFLAGS_CREATE: create if not existing
1797 * ADFLAGS_TRUNC: truncate
1800 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1801 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1802 * This basically results in the files being opened RW instead of RDONLY.
1803 * @param mode (r) mode used with O_CREATE
1805 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1806 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1807 * fds of the same file
1809 * @returns 0 on success, any other value indicates an error
1811 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1817 LOG(log_debug, logtype_ad,
1818 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1819 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1820 fullpathname(path), adflags2logstr(adflags),
1821 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1822 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1823 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1824 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1826 if (adflags & ADFLAGS_CHECK_OF)
1827 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1828 adflags |= ADFLAGS_SETSHRMD;
1830 if (adflags & ADFLAGS_SETSHRMD)
1831 /* sharemode locks are stored in the data fork */
1832 adflags |= ADFLAGS_DF;
1834 if (ad->ad_vers == AD_VERSION2) {
1835 if (adflags & ADFLAGS_RF)
1836 adflags |= ADFLAGS_HF;
1837 if (adflags & ADFLAGS_NORF)
1838 adflags |= ADFLAGS_NOHF;
1841 if (ad->ad_inited != AD_INITED) {
1842 ad->ad_adflags = adflags;
1843 ad->ad_inited = AD_INITED;
1845 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1846 if (ad->ad_resource_fork.adf_refcount > 0)
1847 ad->ad_open_forks |= ATTRBIT_ROPEN;
1850 va_start(args, adflags);
1851 if (adflags & ADFLAGS_CREATE)
1852 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1855 if (adflags & ADFLAGS_DF) {
1856 ad->ad_data_refcount++;
1857 if (ad_open_df(path, adflags, mode, ad) != 0) {
1858 ad->ad_data_refcount--;
1863 if (adflags & ADFLAGS_HF) {
1864 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1869 if (adflags & ADFLAGS_RF) {
1870 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1875 if (adflags & ADFLAGS_CHECK_OF) {
1876 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1880 LOG(log_debug, logtype_ad,
1881 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1882 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1883 fullpathname(path), ret,
1884 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1885 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1886 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1887 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1893 * @brief open metadata, possibly as root
1895 * Return only metadata but try very hard ie at first try as user, then try as root.
1897 * @param name name of file/dir
1898 * @param flags ADFLAGS_DIR: name is a directory \n
1899 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1901 * @param adp pointer to struct adouble
1903 int ad_metadata(const char *name, int flags, struct adouble *adp)
1905 int ret, err, oflags;
1907 /* Sanitize flags */
1908 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1910 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1912 ret = ad_open(adp, name, oflags);
1922 * @brief openat like wrapper for ad_metadata
1924 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1930 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1936 if (ad_metadata(name, flags, adp) < 0) {
1943 if (fchdir(cwdfd) != 0) {
1944 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1957 int ad_refresh(const char *path, struct adouble *ad)
1959 switch (ad->ad_vers) {
1961 if (ad_meta_fileno(ad) == -1)
1963 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1967 if (AD_META_OPEN(ad)) {
1968 if (ad_data_fileno(ad) == -1)
1970 // TODO: read meta EA
1973 if (AD_RSRC_OPEN(ad)) {
1974 if (ad_reso_fileno(ad) == -1)
1977 if (fstat(ad_reso_fileno(ad), &st) == -1)
1979 ad->ad_rlen = st.st_size;
1982 if (AD_META_OPEN(ad)) {
1983 if (ad_data_fileno(ad) == -1)
1985 // TODO: read meta EA
1987 if (AD_RSRC_OPEN(ad)) {
1988 if (ad_reso_fileno(ad) == -1)
1990 if (ad_header_read_osx(path, ad, NULL) < 0)
1994 return ad->ad_ops->ad_header_read(path, ad, NULL);
2003 int ad_openat(struct adouble *ad,
2004 int dirfd, /* dir fd openat like */
2014 if (((cwdfd = open(".", O_RDONLY)) == -1) || (fchdir(dirfd) != 0))
2018 va_start(args, adflags);
2019 if (adflags & ADFLAGS_CREATE)
2020 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
2023 EC_NEG1( ad_open(ad, path, adflags, mode) );
2026 if (fchdir(cwdfd) != 0) {
2027 AFP_PANIC("ad_openat: cant chdir back");
2038 /* build a resource fork mode from the data fork mode:
2039 * remove X mode and extend header to RW if R or W (W if R for locking),
2041 mode_t ad_hf_mode(mode_t mode)
2043 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
2044 /* fnctl lock need write access */
2045 if ((mode & S_IRUSR))
2047 if ((mode & S_IRGRP))
2049 if ((mode & S_IROTH))
2052 /* if write mode set add read mode */
2053 if ((mode & S_IWUSR))
2055 if ((mode & S_IWGRP))
2057 if ((mode & S_IWOTH))