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,
545 strlen(AD_FILLER_NETATALK)) != 0)
547 * It's a split fork created by OS X, it's not our "own" ._ file
548 * and thus not a valid header in this context.
549 * We allow enumeration and access.
554 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
563 * Convert from Apple's ._ file to Netatalk
565 * Apple's AppleDouble may contain a FinderInfo entry longer then 32 bytes
566 * containing packed xattrs. Netatalk can't deal with that, so we
567 * simply discard the packed xattrs.
569 * As we call ad_open() which might result in a recursion, just to be sure
570 * use static variable in_conversion to check for that.
572 * Returns -1 in case an error occured, 0 if no conversion was done, 1 otherwise
574 static int ad_convert_osx(const char *path, struct adouble *ad)
577 static bool in_conversion = false;
579 int finderlen = ad_getentrylen(ad, ADEID_FINDERI);
582 if (in_conversion || finderlen == ADEDLEN_FINDERI)
584 in_conversion = true;
586 LOG(log_debug, logtype_ad, "Converting OS X AppleDouble %s, FinderInfo length: %d",
587 fullpathname(path), finderlen);
589 origlen = ad_getentryoff(ad, ADEID_RFORK) + ad_getentrylen(ad, ADEID_RFORK);
591 map = mmap(NULL, origlen, PROT_WRITE, MAP_SHARED, ad_reso_fileno(ad), 0);
592 if (map == MAP_FAILED) {
593 LOG(log_error, logtype_ad, "mmap AppleDouble: %s\n", strerror(errno));
597 memmove(map + ad_getentryoff(ad, ADEID_FINDERI) + ADEDLEN_FINDERI,
598 map + ad_getentryoff(ad, ADEID_RFORK),
599 ad_getentrylen(ad, ADEID_RFORK));
601 ad_setentrylen(ad, ADEID_FINDERI, ADEDLEN_FINDERI);
602 ad->ad_rlen = ad_getentrylen(ad, ADEID_RFORK);
603 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(ad, ADEID_FINDERI) + ADEDLEN_FINDERI);
605 EC_ZERO_LOG( ftruncate(ad_reso_fileno(ad),
606 ad_getentryoff(ad, ADEID_RFORK)
607 + ad_getentrylen(ad, ADEID_RFORK)) );
609 (void)ad_rebuild_adouble_header_osx(ad, map);
610 munmap(map, origlen);
612 /* Create a metadata EA if one doesn't exit */
613 if (strlen(path) < 3)
616 ad_init_old(&adea, AD_VERSION_EA, ad->ad_options);
618 if (ad_open(&adea, path + 2, ADFLAGS_HF | ADFLAGS_RDWR | ADFLAGS_CREATE, 0666) < 0) {
619 LOG(log_error, logtype_ad, "create metadata: %s\n", strerror(errno));
622 if (adea.ad_mdp->adf_flags & O_CREAT) {
623 memcpy(ad_entry(&adea, ADEID_FINDERI),
624 ad_entry(ad, ADEID_FINDERI),
628 ad_close(&adea, ADFLAGS_HF);
631 in_conversion = false;
637 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
638 static int ad_header_read_osx(const char *path, struct adouble *ad, const struct stat *hst)
641 struct adouble adosx;
642 char *buf = &adosx.ad_data[0];
650 LOG(log_debug, logtype_ad, "ad_header_read_osx: %s", path ? fullpathname(path) : "");
651 ad_init_old(&adosx, AD_VERSION_EA, ad->ad_options);
652 memset(buf, 0, sizeof(adosx.ad_data));
653 adosx.ad_rfp->adf_fd = ad_reso_fileno(ad);
655 /* read the header */
656 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
658 if (header_len < AD_HEADER_LEN) {
663 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
664 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
665 adosx.ad_magic = ntohl(adosx.ad_magic);
666 adosx.ad_version = ntohl(adosx.ad_version);
668 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
669 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
674 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
675 nentries = ntohs(nentries);
676 len = nentries * AD_ENTRY_LEN;
678 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
679 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
681 buf += AD_HEADER_LEN;
682 if (len > header_len - AD_HEADER_LEN) {
683 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
688 nentries = len / AD_ENTRY_LEN;
689 if (parse_entries(&adosx, buf, nentries) != 0) {
690 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
691 path ? fullpathname(path) : "");
694 if (ad_getentrylen(&adosx, ADEID_FINDERI) != ADEDLEN_FINDERI) {
695 LOG(log_warning, logtype_ad, "Convert OS X to Netatalk AppleDouble: %s",
696 path ? fullpathname(path) : "");
698 if (retry_read > 0) {
699 LOG(log_error, logtype_ad, "ad_header_read_osx: %s, giving up", path ? fullpathname(path) : "");
704 if (ad_convert_osx(path, &adosx) == 1) {
711 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
712 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
713 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
715 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
722 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
725 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
726 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
732 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
738 char *buf = ad->ad_data;
740 if (ad_meta_fileno(ad) != -1)
741 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
743 header_len = sys_getxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
744 if (header_len < 1) {
745 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
749 if (header_len < AD_DATASZ_EA) {
750 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): short metadata EA", fullpathname(path));
755 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
756 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
758 ad->ad_magic = ntohl( ad->ad_magic );
759 ad->ad_version = ntohl( ad->ad_version );
761 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
762 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
767 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
768 nentries = ntohs( nentries );
769 if (nentries != ADEID_NUM_EA) {
770 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid number of entries: %d", fullpathname(path), nentries);
775 /* Now parse entries */
776 if (parse_entries(ad, buf + AD_HEADER_LEN, nentries)) {
777 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
778 path ? fullpathname(path) : "");
783 if (nentries != ADEID_NUM_EA
784 || !ad_entry(ad, ADEID_FINDERI)
785 || !ad_entry(ad, ADEID_COMMENT)
786 || !ad_entry(ad, ADEID_FILEDATESI)
787 || !ad_entry(ad, ADEID_AFPFILEI)
788 || !ad_entry(ad, ADEID_PRIVDEV)
789 || !ad_entry(ad, ADEID_PRIVINO)
790 || !ad_entry(ad, ADEID_PRIVSYN)
791 || !ad_entry(ad, ADEID_PRIVID)) {
792 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid metadata EA", fullpathname(path));
798 if (ret != 0 && errno == EINVAL) {
800 (void)sys_removexattr(path, AD_EA_META);
802 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): deleted invalid metadata EA", fullpathname(path), nentries);
809 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
812 * path: "/path/.AppleDouble/file"
813 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
815 static int ad_mkrf(const char *path)
819 * Probably .AppleDouble doesn't exist, try to mkdir it.
821 if (NULL == ( slash = strrchr( path, '/' )) ) {
826 if ( ad_mkdir( path, 0777 ) < 0 ) {
834 static int ad_mkrf_ea(const char *path _U_)
836 AFP_PANIC("ad_mkrf_ea: dont use");
841 static int ad_mkrf_osx(const char *path _U_)
847 if we are root change path user/ group
848 It can be a native function for BSD cf. FAQ.Q10
849 path: pathname to chown
850 stbuf: parent directory inode
852 use fstat and fchown or lchown with linux?
854 #define EMULATE_SUIDDIR
856 static int ad_chown(const char *path, struct stat *stbuf)
859 #ifdef EMULATE_SUIDDIR
862 if (default_uid != (uid_t)-1) {
863 /* we are root (admin) */
864 id = (default_uid)?default_uid:stbuf->st_uid;
865 ret = lchown( path, id, stbuf->st_gid );
871 #define DEFMASK 07700 /* be conservative */
874 return access right and inode of path parent directory
876 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
881 if (ad_stat(path, stbuf) != 0) {
885 *mode &= stbuf->st_mode;
889 /* --------------------------- */
890 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
895 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
897 AFP_PANIC("ad_header_upgrade_ea: dont use");
902 * Error handling for adouble header(=metadata) file open error
904 * We're called because opening ADFLAGS_HF caused an error.
905 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
906 * 2. Open non-existent ressource fork, this will just result in first read return EOF
907 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
908 * ought to close it before returning with an error condition.
910 static int ad_error(struct adouble *ad, int adflags)
913 if (adflags & ADFLAGS_NOHF) { /* 1 */
916 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
918 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
919 ad_close( ad, ADFLAGS_DF );
926 * Map ADFLAGS to open() flags
928 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
929 * @param adflags (r) flags from ad_open(..., adflags, ...)
930 * @returns mapped flags suitable for calling open()
932 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
936 if (adflags & ADFLAGS_RDWR)
938 if (adflags & ADFLAGS_RDONLY) {
939 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
940 /* need rw access for locks */
941 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
942 /* need rw access for adouble file for the case:
943 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
948 if (adflags & ADFLAGS_CREATE)
950 if (adflags & ADFLAGS_EXCL)
952 if (adflags & ADFLAGS_TRUNC)
955 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
956 oflags |= O_NOFOLLOW;
961 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
970 LOG(log_debug, logtype_ad,
971 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
972 fullpathname(path), adflags2logstr(adflags),
973 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
974 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
975 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
977 if (ad_data_fileno(ad) != -1) {
978 /* the file is already open, but we want write access: */
979 if ((adflags & ADFLAGS_RDWR)
980 /* and it was denied the first time: */
981 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
985 /* it's not new anymore */
986 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
987 ad->ad_data_fork.adf_refcount++;
991 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
994 if ((adflags & ADFLAGS_CREATE)) {
995 st_invalid = ad_mode_st(path, &admode, &st_dir);
996 if ((ad->ad_options & ADVOL_UNIXPRIV))
1000 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
1002 if (ad->ad_data_fork.adf_fd == -1) {
1007 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
1010 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
1014 case OPEN_NOFOLLOW_ERRNO:
1015 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
1016 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
1017 free(ad->ad_data_fork.adf_syml);
1020 ad->ad_data_fork.adf_syml[lsz] = 0;
1021 ad->ad_data_fork.adf_fd = AD_SYMLINK;
1029 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
1031 ad->ad_data_fork.adf_flags = oflags;
1032 adf_lock_init(&ad->ad_data_fork);
1033 ad->ad_data_fork.adf_refcount++;
1036 LOG(log_debug, logtype_ad,
1037 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1038 fullpathname(path), adflags2logstr(adflags), ret,
1039 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1040 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1041 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1045 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
1049 struct stat st_meta;
1050 struct stat *pst = NULL;
1052 int oflags, nocreatflags, opened = 0;
1054 int st_invalid = -1;
1056 LOG(log_debug, logtype_ad,
1057 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1058 fullpathname(path), adflags2logstr(adflags),
1059 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1060 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1061 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1063 if (ad_meta_fileno(ad) != -1) {
1064 /* the file is already open, but we want write access: */
1065 if ((adflags & ADFLAGS_RDWR) &&
1066 /* and it was already denied: */
1067 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1071 ad_refresh(path, ad);
1072 /* it's not new anymore */
1073 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1074 ad->ad_mdp->adf_refcount++;
1078 ad_p = ad->ad_ops->ad_path(path, adflags);
1079 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
1080 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
1081 fullpathname(path), openflags2logstr(oflags));
1082 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
1084 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
1086 if (ad_meta_fileno(ad) != -1) {
1087 ad->ad_mdp->adf_flags = nocreatflags;
1093 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
1094 nocreatflags &= ~O_RDWR;
1095 nocreatflags |= O_RDONLY;
1096 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
1097 ad->ad_mdp->adf_flags = nocreatflags;
1102 if (!(oflags & O_CREAT))
1105 * We're expecting to create a new adouble header file here
1107 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
1108 fullpathname(path));
1111 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1112 if ((ad->ad_options & ADVOL_UNIXPRIV))
1114 admode = ad_hf_mode(admode);
1115 if (errno == ENOENT) {
1116 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
1118 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1119 if ((ad->ad_options & ADVOL_UNIXPRIV))
1121 admode = ad_hf_mode(admode);
1124 /* retry with O_CREAT */
1125 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1126 ad->ad_mdp->adf_flags = oflags;
1127 /* just created, set owner if admin owner (root) */
1129 ad_chown(ad_p, &st_dir);
1136 /* Now we've got a new opened fd, we need to check that in the error case */
1139 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1140 /* check for 0 length files, treat them as new. */
1141 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1142 if (st_meta.st_size == 0)
1143 ad->ad_mdp->adf_flags |= O_TRUNC;
1145 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1150 adf_lock_init(ad->ad_mdp);
1151 ad->ad_mdp->adf_refcount = 1;
1153 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1154 /* This is a new adouble header file, create it */
1155 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1158 /* Read the adouble header in and parse it.*/
1159 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1163 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1164 close(ad_meta_fileno(ad));
1165 ad_meta_fileno(ad) = -1;
1166 ad->ad_mdp->adf_refcount = 0;
1168 LOG(log_debug, logtype_ad,
1169 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1170 fullpathname(path), adflags2logstr(adflags), ret,
1171 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1172 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1173 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1177 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1183 LOG(log_debug, logtype_ad,
1184 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1185 fullpathname(path), adflags2logstr(adflags),
1186 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1187 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1188 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1190 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1192 if (ad_meta_fileno(ad) == AD_SYMLINK)
1195 if (ad_meta_fileno(ad) != -1) {
1196 /* the file is already open, but we want write access: */
1197 if ((oflags & O_RDWR) &&
1198 /* and it was already denied: */
1199 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1200 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1201 fullpathname(path), strerror(errno));
1205 /* it's not new anymore */
1206 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1208 if (oflags & O_RDWR) {
1209 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1210 if (adflags & ADFLAGS_DIR)
1211 /* For directories we open the directory RDONYL so we can later fchdir() */
1212 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1213 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1214 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1216 ad->ad_mdp->adf_flags = oflags;
1220 /* Read the adouble header in and parse it.*/
1221 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1222 if (!(adflags & ADFLAGS_CREATE)) {
1223 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1227 if ((adflags & ADFLAGS_CREATE) && (ad->ad_options & ADVOL_RO)) {
1232 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1234 /* It doesnt exist, EPERM or another error */
1235 if (!(errno == ENOATTR || errno == ENOENT)) {
1236 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1241 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1242 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1244 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1247 if (ad_meta_fileno(ad) != -1)
1248 ad->ad_mdp->adf_refcount++;
1249 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1252 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1253 close(ad_meta_fileno(ad));
1254 ad_meta_fileno(ad) = -1;
1255 ad->ad_mdp->adf_refcount = 0;
1257 LOG(log_debug, logtype_ad,
1258 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1259 fullpathname(path), adflags2logstr(adflags), ret,
1260 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1261 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1262 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1267 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1271 ad->ad_meta_refcount++;
1273 switch (ad->ad_vers) {
1275 ret = ad_open_hf_v2(path, adflags, mode, ad);
1278 ret = ad_open_hf_ea(path, adflags, mode, ad);
1286 ad->ad_meta_refcount--;
1287 ret = ad_error(ad, adflags);
1294 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1296 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1302 if (adflags & ADFLAGS_DIR)
1305 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1310 if (ad && ad_reso_fileno(ad) != -1) {
1311 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1313 } else if (ad && ad_meta_fileno(ad) != -1) {
1314 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1316 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1321 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1322 EC_ZERO( lstat(rfpath, &st));
1323 if (st.st_size > ADEDOFF_RFORK_OSX)
1324 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1329 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1337 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1342 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1343 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1346 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1348 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1350 if (AD_META_OPEN(ad))
1351 ad->ad_reso_refcount++;
1354 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1358 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1363 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1369 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1371 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1373 if (ad_reso_fileno(ad) != -1) {
1374 /* the file is already open, but we want write access: */
1375 if ((oflags & O_RDWR)
1376 /* and it was already denied: */
1377 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1381 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1382 ad->ad_reso_refcount++;
1383 ad->ad_rfp->adf_refcount++;
1384 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1388 if (ad_meta_fileno(ad) < 0)
1390 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1391 if (!(adflags & ADFLAGS_CREATE)) {
1396 if (!(adflags & ADFLAGS_RDONLY)) {
1397 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1402 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1403 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1410 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1415 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1416 AD_EA_RESO, oflags, 0666) );
1420 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1421 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1422 if (!(adflags & ADFLAGS_CREATE)) {
1427 if (!(adflags & ADFLAGS_RDONLY)) {
1428 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1433 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1434 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1441 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1446 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1447 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1453 ad->ad_rfp->adf_refcount = 1;
1454 ad->ad_rfp->adf_flags = oflags;
1455 ad->ad_reso_refcount++;
1458 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1459 if (ad->ad_rfp->adf_flags & O_CREAT) {
1460 /* This is a new adouble header file, create it */
1461 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1463 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1464 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1468 /* Read the adouble header */
1469 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1471 EC_NEG1_LOG( ad_header_read_osx(rfpath, ad, &st) );
1475 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1479 if (opened && (ad_reso_fileno(ad) != -1)) {
1480 close(ad_reso_fileno(ad));
1481 ad_reso_fileno(ad) = -1;
1482 ad->ad_reso_refcount--;
1483 ad->ad_rfp->adf_refcount = 0;
1485 if (adflags & ADFLAGS_NORF) {
1489 (void)ad_close(ad, closeflags);
1495 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1501 * Open ressource fork
1503 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1507 switch (ad->ad_vers) {
1509 ret = ad_open_rf_v2(path, adflags, mode, ad);
1512 ret = ad_open_rf_ea(path, adflags, mode, ad);
1522 /***********************************************************************************
1524 ********************************************************************************* */
1526 off_t ad_getentryoff(const struct adouble *ad, int eid)
1528 if (ad->ad_vers == AD_VERSION2)
1529 return ad->ad_eid[eid].ade_off;
1538 return ad->ad_eid[eid].ade_off;
1541 return ad->ad_eid[eid].ade_off;
1544 AFP_PANIC("What am I doing here?");
1547 const char *ad_path_ea( const char *path, int adflags _U_)
1552 const char *ad_path_osx(const char *path, int adflags _U_)
1554 static char pathbuf[ MAXPATHLEN + 1];
1555 char c, *slash, buf[MAXPATHLEN + 1];
1557 if (!strcmp(path,".")) {
1559 getcwd(buf, MAXPATHLEN);
1562 strlcpy(buf, path, MAXPATHLEN +1);
1564 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1567 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1570 pathbuf[ 0 ] = '\0';
1573 strlcat( pathbuf, "._", MAXPATHLEN +1);
1574 strlcat( pathbuf, slash, MAXPATHLEN +1);
1579 * Put the .AppleDouble where it needs to be:
1581 * / a/.AppleDouble/b
1583 * \ b/.AppleDouble/.Parent
1585 * FIXME: should do something for pathname > MAXPATHLEN
1587 const char *ad_path( const char *path, int adflags)
1589 static char pathbuf[ MAXPATHLEN + 1];
1593 if ( adflags & ADFLAGS_DIR ) {
1594 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1596 if ( l && l < MAXPATHLEN) {
1599 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1601 if (NULL != ( slash = strrchr( path, '/' )) ) {
1604 /* XXX we must return NULL here and test in the caller */
1607 memcpy( pathbuf, path, l);
1612 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1613 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1619 /* -------------------------
1620 * Support inherited protection modes for AppleDouble files. The supplied
1621 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1622 * and that value is returned.
1624 char *ad_dir(const char *path)
1626 static char modebuf[ MAXPATHLEN + 1];
1629 * For a path with directories in it, remove the final component
1630 * (path or subdirectory name) to get the name we want to stat.
1631 * For a path which is just a filename, use "." instead.
1633 slash = strrchr( path, '/' );
1638 if (len >= MAXPATHLEN) {
1639 errno = ENAMETOOLONG;
1640 return NULL; /* can't do it */
1642 memcpy( modebuf, path, len );
1643 modebuf[len] = '\0';
1644 /* is last char a '/' ? */
1645 if (slash[1] == 0) {
1646 slash = modebuf+ len;
1648 while (modebuf < slash && slash[-1] == '/') {
1651 if (modebuf == slash) {
1655 while (modebuf < slash && *slash != '/') {
1658 if (modebuf == slash) {
1661 *slash = '\0'; /* remove pathname component */
1666 modebuf[0] = '.'; /* use current directory */
1671 int ad_setfuid(const uid_t id)
1677 /* ---------------- */
1678 uid_t ad_getfuid(void)
1684 stat path parent directory
1686 int ad_stat(const char *path, struct stat *stbuf)
1693 return stat( p, stbuf );
1697 return access right of path parent directory
1699 int ad_mode( const char *path, mode_t mode)
1702 ad_mode_st(path, &mode, &stbuf);
1707 * Use mkdir() with mode bits taken from ad_mode().
1709 int ad_mkdir( const char *path, mode_t mode)
1715 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1716 path, mode, getcwdpath());
1718 st_invalid = ad_mode_st(path, &mode, &stbuf);
1719 ret = mkdir( path, mode );
1720 if (ret || st_invalid)
1722 ad_chown(path, &stbuf);
1727 static void ad_init_func(struct adouble *ad)
1729 switch (ad->ad_vers) {
1731 ad->ad_ops = &ad_adouble;
1732 ad->ad_rfp = &ad->ad_resource_fork;
1733 ad->ad_mdp = &ad->ad_resource_fork;
1736 ad->ad_ops = &ad_adouble_ea;
1737 ad->ad_rfp = &ad->ad_resource_fork;
1738 ad->ad_mdp = &ad->ad_data_fork;
1741 AFP_PANIC("ad_init: unknown AD version");
1745 ad_data_fileno(ad) = -1;
1746 ad_reso_fileno(ad) = -1;
1747 ad_meta_fileno(ad) = -1;
1748 ad->ad_refcount = 1;
1753 void ad_init_old(struct adouble *ad, int flags, int options)
1755 memset(ad, 0, sizeof(struct adouble));
1756 ad->ad_vers = flags;
1757 ad->ad_options = options;
1761 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1763 memset(ad, 0, sizeof(struct adouble));
1764 ad->ad_vers = vol->v_adouble;
1765 ad->ad_options = vol->v_ad_options;
1770 * Open data-, metadata(header)- or ressource fork
1772 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1773 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1775 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1778 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1781 * Open a files data fork, metadata fork or ressource fork.
1783 * @param ad (rw) pointer to struct adouble
1784 * @param path (r) Path to file or directory
1785 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1786 * ADFLAGS_DF: open data fork
1787 * ADFLAGS_RF: open ressource fork
1788 * ADFLAGS_HF: open header (metadata) file
1789 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1790 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1791 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1793 * Access mode for the forks:
1794 * ADFLAGS_RDONLY: open read only
1795 * ADFLAGS_RDWR: open read write
1798 * ADFLAGS_CREATE: create if not existing
1799 * ADFLAGS_TRUNC: truncate
1802 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1803 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1804 * This basically results in the files being opened RW instead of RDONLY.
1805 * @param mode (r) mode used with O_CREATE
1807 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1808 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1809 * fds of the same file
1811 * @returns 0 on success, any other value indicates an error
1813 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1819 LOG(log_debug, logtype_ad,
1820 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1821 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1822 fullpathname(path), adflags2logstr(adflags),
1823 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1824 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1825 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1826 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1828 if (adflags & ADFLAGS_CHECK_OF)
1829 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1830 adflags |= ADFLAGS_SETSHRMD;
1832 if (adflags & ADFLAGS_SETSHRMD)
1833 /* sharemode locks are stored in the data fork */
1834 adflags |= ADFLAGS_DF;
1836 if (ad->ad_vers == AD_VERSION2) {
1837 if (adflags & ADFLAGS_RF)
1838 adflags |= ADFLAGS_HF;
1839 if (adflags & ADFLAGS_NORF)
1840 adflags |= ADFLAGS_NOHF;
1843 if (ad->ad_inited != AD_INITED) {
1844 ad->ad_adflags = adflags;
1845 ad->ad_inited = AD_INITED;
1847 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1848 if (ad->ad_resource_fork.adf_refcount > 0)
1849 ad->ad_open_forks |= ATTRBIT_ROPEN;
1852 va_start(args, adflags);
1853 if (adflags & ADFLAGS_CREATE)
1854 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1857 if (adflags & ADFLAGS_DF) {
1858 ad->ad_data_refcount++;
1859 if (ad_open_df(path, adflags, mode, ad) != 0) {
1860 ad->ad_data_refcount--;
1865 if (adflags & ADFLAGS_HF) {
1866 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1871 if (adflags & ADFLAGS_RF) {
1872 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1877 if (adflags & ADFLAGS_CHECK_OF) {
1878 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1882 LOG(log_debug, logtype_ad,
1883 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1884 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1885 fullpathname(path), ret,
1886 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1887 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1888 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1889 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1895 * @brief open metadata, possibly as root
1897 * Return only metadata but try very hard ie at first try as user, then try as root.
1899 * @param name name of file/dir
1900 * @param flags ADFLAGS_DIR: name is a directory \n
1901 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1903 * @param adp pointer to struct adouble
1905 int ad_metadata(const char *name, int flags, struct adouble *adp)
1907 int ret, err, oflags;
1909 /* Sanitize flags */
1910 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1912 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1914 ret = ad_open(adp, name, oflags);
1924 * @brief openat like wrapper for ad_metadata
1926 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1932 if (((cwdfd = open(".", O_RDONLY)) == -1) || (fchdir(dirfd) != 0)) {
1938 if (ad_metadata(name, flags, adp) < 0) {
1945 if (fchdir(cwdfd) != 0) {
1946 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1959 int ad_refresh(const char *path, struct adouble *ad)
1961 switch (ad->ad_vers) {
1963 if (ad_meta_fileno(ad) == -1)
1965 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1969 if (AD_META_OPEN(ad)) {
1970 if (ad_data_fileno(ad) == -1)
1972 // TODO: read meta EA
1975 if (AD_RSRC_OPEN(ad)) {
1976 if (ad_reso_fileno(ad) == -1)
1979 if (fstat(ad_reso_fileno(ad), &st) == -1)
1981 ad->ad_rlen = st.st_size;
1984 if (AD_META_OPEN(ad)) {
1985 if (ad_data_fileno(ad) == -1)
1987 // TODO: read meta EA
1989 if (AD_RSRC_OPEN(ad)) {
1990 if (ad_reso_fileno(ad) == -1)
1992 if (ad_header_read_osx(path, ad, NULL) < 0)
1996 return ad->ad_ops->ad_header_read(path, ad, NULL);
2005 int ad_openat(struct adouble *ad,
2006 int dirfd, /* dir fd openat like */
2016 if (((cwdfd = open(".", O_RDONLY)) == -1) || (fchdir(dirfd) != 0))
2020 va_start(args, adflags);
2021 if (adflags & ADFLAGS_CREATE)
2022 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
2025 EC_NEG1( ad_open(ad, path, adflags, mode) );
2028 if (fchdir(cwdfd) != 0) {
2029 AFP_PANIC("ad_openat: cant chdir back");
2040 /* build a resource fork mode from the data fork mode:
2041 * remove X mode and extend header to RW if R or W (W if R for locking),
2043 mode_t ad_hf_mode(mode_t mode)
2045 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
2046 /* fnctl lock need write access */
2047 if ((mode & S_IRUSR))
2049 if ((mode & S_IRGRP))
2051 if ((mode & S_IROTH))
2054 /* if write mode set add read mode */
2055 if ((mode & S_IWUSR))
2057 if ((mode & S_IWGRP))
2059 if ((mode & S_IWOTH))