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;
314 /* ----------------------------------- */
315 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
317 const struct entry *eid;
321 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\")", path);
323 if (ad->ad_magic == AD_MAGIC) {
324 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\"): already initialized", path);
328 ad->ad_magic = AD_MAGIC;
329 ad->ad_version = ad->ad_vers & 0x0f0000;
330 if (!ad->ad_version) {
331 ad->ad_version = AD_VERSION;
334 memset(ad->ad_data, 0, sizeof(ad->ad_data));
336 if (ad->ad_vers == AD_VERSION2)
338 else if (ad->ad_vers == AD_VERSION_EA)
339 eid = entry_order_ea;
344 ad->ad_eid[eid->id].ade_off = eid->offset;
345 ad->ad_eid[eid->id].ade_len = eid->len;
349 /* put something sane in the directory finderinfo */
352 if (lstat(path, &st) != 0)
356 if ((adflags & ADFLAGS_DIR)) {
357 /* set default view */
358 ashort = htons(FINDERINFO_CLOSEDVIEW);
359 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
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);
366 /* make things invisible */
367 if ((ad->ad_options & ADVOL_INVDOTS)
369 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
371 ashort = htons(ATTRBIT_INVISIBLE);
372 ad_setattr(ad, ashort);
373 ashort = htons(FINDERINFO_INVISIBLE);
374 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
377 /* put something sane in the date fields */
378 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
379 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
380 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
381 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
386 /* -------------------------------------
389 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
391 uint32_t eid, len, off;
394 /* now, read in the entry bits */
395 for (; nentries > 0; nentries-- ) {
396 memcpy(&eid, buf, sizeof( eid ));
397 eid = get_eid(ntohl(eid));
398 buf += sizeof( eid );
399 memcpy(&off, buf, sizeof( off ));
401 buf += sizeof( off );
402 memcpy(&len, buf, sizeof( len ));
404 buf += sizeof( len );
408 && off < sizeof(ad->ad_data)
409 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
410 ad->ad_eid[ eid ].ade_off = off;
411 ad->ad_eid[ eid ].ade_len = len;
412 } else if (!warning) {
414 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %d", eid);
419 /* this reads enough of the header so that we can figure out all of
420 * the entry lengths and offsets. once that's done, we just read/mmap
421 * the rest of the header in.
423 * NOTE: we're assuming that the resource fork is kept at the end of
424 * the file. also, mmapping won't work for the hfs fs until it
425 * understands how to mmap header files. */
426 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
428 char *buf = ad->ad_data;
434 /* read the header */
435 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
438 if (header_len < AD_HEADER_LEN) {
443 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
444 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
445 ad->ad_magic = ntohl( ad->ad_magic );
446 ad->ad_version = ntohl( ad->ad_version );
448 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
449 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
454 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
455 nentries = ntohs( nentries );
457 /* read in all the entry headers. if we have more than the
458 * maximum, just hope that the rfork is specified early on. */
459 len = nentries*AD_ENTRY_LEN;
461 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
462 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
464 buf += AD_HEADER_LEN;
465 if (len > header_len - AD_HEADER_LEN) {
466 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
471 /* figure out all of the entry offsets and lengths. if we aren't
472 * able to read a resource fork entry, bail. */
473 nentries = len / AD_ENTRY_LEN;
474 parse_entries(ad, buf, nentries);
475 if (!ad_getentryoff(ad, ADEID_RFORK)
476 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
478 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
483 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
484 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
491 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
492 return 1; /* fail silently */
496 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
501 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
502 int ad_valid_header_osx(const char *path)
506 struct adouble adosx;
507 char *buf = &adosx.ad_data[0];
510 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
512 EC_NEG1( fd = open(path, O_RDONLY) );
514 /* read the header */
515 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
517 if (header_len < AD_HEADER_LEN)
520 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
521 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
522 adosx.ad_magic = ntohl(adosx.ad_magic);
523 adosx.ad_version = ntohl(adosx.ad_version);
525 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
526 LOG(log_warning, logtype_ad, "ad_valid_header_osx(\"%s\"): not an adouble:osx file", fullpathname(path));
530 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
532 * It's a split fork created by OS X, it's not our "own" ._ file
533 * and thus not a valid header in this context.
534 * We allow enumeration and access.
539 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
547 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
548 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
551 struct adouble adosx;
552 char *buf = &adosx.ad_data[0];
558 memset(buf, 0, sizeof(adosx.ad_data));
560 /* read the header */
561 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
563 if (header_len < AD_HEADER_LEN) {
568 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
569 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
570 adosx.ad_magic = ntohl(adosx.ad_magic);
571 adosx.ad_version = ntohl(adosx.ad_version);
573 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
574 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
579 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
580 nentries = ntohs(nentries);
581 len = nentries * AD_ENTRY_LEN;
583 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
584 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
586 buf += AD_HEADER_LEN;
587 if (len > header_len - AD_HEADER_LEN) {
588 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
593 nentries = len / AD_ENTRY_LEN;
594 parse_entries(&adosx, buf, nentries);
596 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
597 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
598 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
600 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
607 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
610 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
611 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
617 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
623 char *buf = ad->ad_data;
625 if (ad_meta_fileno(ad) != -1)
626 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
628 header_len = sys_getxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
629 if (header_len < 1) {
630 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
634 if (header_len < AD_DATASZ_EA) {
635 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): short metadata EA", fullpathname(path));
640 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
641 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
643 ad->ad_magic = ntohl( ad->ad_magic );
644 ad->ad_version = ntohl( ad->ad_version );
646 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
647 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
652 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
653 nentries = ntohs( nentries );
654 if (nentries != ADEID_NUM_EA) {
655 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid number of entries: %d", fullpathname(path), nentries);
660 /* Now parse entries */
661 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
663 if (nentries != ADEID_NUM_EA
664 || !ad_entry(ad, ADEID_FINDERI)
665 || !ad_entry(ad, ADEID_COMMENT)
666 || !ad_entry(ad, ADEID_FILEDATESI)
667 || !ad_entry(ad, ADEID_AFPFILEI)
668 || !ad_entry(ad, ADEID_PRIVDEV)
669 || !ad_entry(ad, ADEID_PRIVINO)
670 || !ad_entry(ad, ADEID_PRIVSYN)
671 || !ad_entry(ad, ADEID_PRIVID)) {
672 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid metadata EA", fullpathname(path));
678 if (ret != 0 && errno == EINVAL) {
680 (void)sys_removexattr(path, AD_EA_META);
682 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): deleted invalid metadata EA", fullpathname(path), nentries);
689 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
692 * path: "/path/.AppleDouble/file"
693 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
695 static int ad_mkrf(const char *path)
699 * Probably .AppleDouble doesn't exist, try to mkdir it.
701 if (NULL == ( slash = strrchr( path, '/' )) ) {
706 if ( ad_mkdir( path, 0777 ) < 0 ) {
714 static int ad_mkrf_ea(const char *path _U_)
716 AFP_PANIC("ad_mkrf_ea: dont use");
721 static int ad_mkrf_osx(const char *path _U_)
727 if we are root change path user/ group
728 It can be a native function for BSD cf. FAQ.Q10
729 path: pathname to chown
730 stbuf: parent directory inode
732 use fstat and fchown or lchown with linux?
734 #define EMULATE_SUIDDIR
736 static int ad_chown(const char *path, struct stat *stbuf)
739 #ifdef EMULATE_SUIDDIR
742 if (default_uid != (uid_t)-1) {
743 /* we are root (admin) */
744 id = (default_uid)?default_uid:stbuf->st_uid;
745 ret = lchown( path, id, stbuf->st_gid );
751 #define DEFMASK 07700 /* be conservative */
754 return access right and inode of path parent directory
756 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
761 if (ad_stat(path, stbuf) != 0) {
765 *mode &= stbuf->st_mode;
769 /* --------------------------- */
770 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
775 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
777 AFP_PANIC("ad_header_upgrade_ea: dont use");
782 * Error handling for adouble header(=metadata) file open error
784 * We're called because opening ADFLAGS_HF caused an error.
785 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
786 * 2. Open non-existent ressource fork, this will just result in first read return EOF
787 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
788 * ought to close it before returning with an error condition.
790 static int ad_error(struct adouble *ad, int adflags)
793 if (adflags & ADFLAGS_NOHF) { /* 1 */
796 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
798 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
799 ad_close( ad, ADFLAGS_DF );
806 * Map ADFLAGS to open() flags
808 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
809 * @param adflags (r) flags from ad_open(..., adflags, ...)
810 * @returns mapped flags suitable for calling open()
812 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
816 if (adflags & ADFLAGS_RDWR)
818 if (adflags & ADFLAGS_RDONLY) {
819 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
820 /* need rw access for locks */
821 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
822 /* need rw access for adouble file for the case:
823 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
828 if (adflags & ADFLAGS_CREATE)
830 if (adflags & ADFLAGS_EXCL)
832 if (adflags & ADFLAGS_TRUNC)
835 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
836 oflags |= O_NOFOLLOW;
841 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
850 LOG(log_debug, logtype_ad,
851 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
852 fullpathname(path), adflags2logstr(adflags),
853 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
854 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
855 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
857 if (ad_data_fileno(ad) != -1) {
858 /* the file is already open, but we want write access: */
859 if ((adflags & ADFLAGS_RDWR)
860 /* and it was denied the first time: */
861 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
865 /* it's not new anymore */
866 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
867 ad->ad_data_fork.adf_refcount++;
871 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
874 if ((adflags & ADFLAGS_CREATE)) {
875 st_invalid = ad_mode_st(path, &admode, &st_dir);
876 if ((ad->ad_options & ADVOL_UNIXPRIV))
880 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
882 if (ad->ad_data_fork.adf_fd == -1) {
887 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
890 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
894 case OPEN_NOFOLLOW_ERRNO:
895 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
896 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
897 free(ad->ad_data_fork.adf_syml);
900 ad->ad_data_fork.adf_syml[lsz] = 0;
901 ad->ad_data_fork.adf_fd = AD_SYMLINK;
909 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
911 ad->ad_data_fork.adf_flags = oflags;
912 adf_lock_init(&ad->ad_data_fork);
913 ad->ad_data_fork.adf_refcount++;
916 LOG(log_debug, logtype_ad,
917 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
918 fullpathname(path), adflags2logstr(adflags), ret,
919 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
920 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
921 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
925 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
930 struct stat *pst = NULL;
932 int oflags, nocreatflags, opened = 0;
936 LOG(log_debug, logtype_ad,
937 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
938 fullpathname(path), adflags2logstr(adflags),
939 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
940 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
941 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
943 if (ad_meta_fileno(ad) != -1) {
944 /* the file is already open, but we want write access: */
945 if ((adflags & ADFLAGS_RDWR) &&
946 /* and it was already denied: */
947 (ad->ad_mdp->adf_flags & O_RDONLY)) {
951 ad_refresh(path, ad);
952 /* it's not new anymore */
953 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
954 ad->ad_mdp->adf_refcount++;
958 ad_p = ad->ad_ops->ad_path(path, adflags);
959 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
960 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
961 fullpathname(path), openflags2logstr(oflags));
962 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
964 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
966 if (ad_meta_fileno(ad) != -1) {
967 ad->ad_mdp->adf_flags = nocreatflags;
973 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
974 nocreatflags &= ~O_RDWR;
975 nocreatflags |= O_RDONLY;
976 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
977 ad->ad_mdp->adf_flags = nocreatflags;
982 if (!(oflags & O_CREAT))
985 * We're expecting to create a new adouble header file here
987 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
991 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
992 if ((ad->ad_options & ADVOL_UNIXPRIV))
994 admode = ad_hf_mode(admode);
995 if (errno == ENOENT) {
996 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
998 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
999 if ((ad->ad_options & ADVOL_UNIXPRIV))
1001 admode = ad_hf_mode(admode);
1004 /* retry with O_CREAT */
1005 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1006 ad->ad_mdp->adf_flags = oflags;
1007 /* just created, set owner if admin owner (root) */
1009 ad_chown(ad_p, &st_dir);
1016 /* Now we've got a new opened fd, we need to check that in the error case */
1019 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1020 /* check for 0 length files, treat them as new. */
1021 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1022 if (st_meta.st_size == 0)
1023 ad->ad_mdp->adf_flags |= O_TRUNC;
1025 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1030 adf_lock_init(ad->ad_mdp);
1031 ad->ad_mdp->adf_refcount = 1;
1033 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1034 /* This is a new adouble header file, create it */
1035 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1038 /* Read the adouble header in and parse it.*/
1039 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1043 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1044 close(ad_meta_fileno(ad));
1045 ad_meta_fileno(ad) = -1;
1046 ad->ad_mdp->adf_refcount = 0;
1048 LOG(log_debug, logtype_ad,
1049 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1050 fullpathname(path), adflags2logstr(adflags), ret,
1051 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1052 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1053 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1057 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1063 LOG(log_debug, logtype_ad,
1064 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1065 fullpathname(path), adflags2logstr(adflags),
1066 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1067 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1068 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1070 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1072 if (ad_meta_fileno(ad) == AD_SYMLINK)
1075 if (ad_meta_fileno(ad) != -1) {
1076 /* the file is already open, but we want write access: */
1077 if ((oflags & O_RDWR) &&
1078 /* and it was already denied: */
1079 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1080 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1081 fullpathname(path), strerror(errno));
1085 /* it's not new anymore */
1086 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1088 if (oflags & O_RDWR) {
1089 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1090 if (adflags & ADFLAGS_DIR)
1091 /* For directories we open the directory RDONYL so we can later fchdir() */
1092 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1093 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1094 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1096 ad->ad_mdp->adf_flags = oflags;
1100 /* Read the adouble header in and parse it.*/
1101 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1102 if (!(adflags & ADFLAGS_CREATE)) {
1103 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1107 if ((adflags & ADFLAGS_CREATE) && (ad->ad_options & ADVOL_RO)) {
1112 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1114 /* It doesnt exist, EPERM or another error */
1115 if (!(errno == ENOATTR || errno == ENOENT)) {
1116 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1121 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1122 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1124 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1127 if (ad_meta_fileno(ad) != -1)
1128 ad->ad_mdp->adf_refcount++;
1129 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1132 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1133 close(ad_meta_fileno(ad));
1134 ad_meta_fileno(ad) = -1;
1135 ad->ad_mdp->adf_refcount = 0;
1137 LOG(log_debug, logtype_ad,
1138 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1139 fullpathname(path), adflags2logstr(adflags), ret,
1140 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1141 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1142 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1147 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1151 ad->ad_meta_refcount++;
1153 switch (ad->ad_vers) {
1155 ret = ad_open_hf_v2(path, adflags, mode, ad);
1158 ret = ad_open_hf_ea(path, adflags, mode, ad);
1166 ad->ad_meta_refcount--;
1167 ret = ad_error(ad, adflags);
1174 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1176 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1182 if (adflags & ADFLAGS_DIR)
1185 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1190 if (ad && ad_reso_fileno(ad) != -1) {
1191 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1193 } else if (ad && ad_meta_fileno(ad) != -1) {
1194 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1196 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1201 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1202 EC_ZERO( lstat(rfpath, &st));
1203 if (st.st_size > ADEDOFF_RFORK_OSX)
1204 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1209 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1217 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1222 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1223 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1226 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1228 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1230 if (AD_META_OPEN(ad))
1231 ad->ad_reso_refcount++;
1234 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1238 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1243 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1249 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1251 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1253 if (ad_reso_fileno(ad) != -1) {
1254 /* the file is already open, but we want write access: */
1255 if ((oflags & O_RDWR)
1256 /* and it was already denied: */
1257 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1261 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1262 ad->ad_reso_refcount++;
1263 ad->ad_rfp->adf_refcount++;
1264 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1268 if (ad_meta_fileno(ad) < 0)
1270 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1271 if (!(adflags & ADFLAGS_CREATE)) {
1276 if (!(adflags & ADFLAGS_RDONLY)) {
1277 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1282 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1283 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1290 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1295 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1296 AD_EA_RESO, oflags, 0666) );
1300 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1301 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1302 if (!(adflags & ADFLAGS_CREATE)) {
1307 if (!(adflags & ADFLAGS_RDONLY)) {
1308 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1313 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1314 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1321 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1326 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1327 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1333 ad->ad_rfp->adf_refcount = 1;
1334 ad->ad_rfp->adf_flags = oflags;
1335 ad->ad_reso_refcount++;
1338 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1339 if (ad->ad_rfp->adf_flags & O_CREAT) {
1340 /* This is a new adouble header file, create it */
1341 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1343 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1344 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1348 /* Read the adouble header */
1349 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1351 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1355 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1359 if (opened && (ad_reso_fileno(ad) != -1)) {
1360 close(ad_reso_fileno(ad));
1361 ad_reso_fileno(ad) = -1;
1362 ad->ad_reso_refcount--;
1363 ad->ad_rfp->adf_refcount = 0;
1365 if (adflags & ADFLAGS_NORF) {
1369 (void)ad_close(ad, closeflags);
1375 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1381 * Open ressource fork
1383 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1387 switch (ad->ad_vers) {
1389 ret = ad_open_rf_v2(path, adflags, mode, ad);
1392 ret = ad_open_rf_ea(path, adflags, mode, ad);
1402 /***********************************************************************************
1404 ********************************************************************************* */
1406 off_t ad_getentryoff(const struct adouble *ad, int eid)
1408 if (ad->ad_vers == AD_VERSION2)
1409 return ad->ad_eid[eid].ade_off;
1418 return ADEDOFF_RFORK_OSX;
1421 return ad->ad_eid[eid].ade_off;
1424 AFP_PANIC("What am I doing here?");
1427 const char *ad_path_ea( const char *path, int adflags _U_)
1432 const char *ad_path_osx(const char *path, int adflags _U_)
1434 static char pathbuf[ MAXPATHLEN + 1];
1435 char c, *slash, buf[MAXPATHLEN + 1];
1437 if (!strcmp(path,".")) {
1439 getcwd(buf, MAXPATHLEN);
1442 strlcpy(buf, path, MAXPATHLEN +1);
1444 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1447 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1450 pathbuf[ 0 ] = '\0';
1453 strlcat( pathbuf, "._", MAXPATHLEN +1);
1454 strlcat( pathbuf, slash, MAXPATHLEN +1);
1459 * Put the .AppleDouble where it needs to be:
1461 * / a/.AppleDouble/b
1463 * \ b/.AppleDouble/.Parent
1465 * FIXME: should do something for pathname > MAXPATHLEN
1467 const char *ad_path( const char *path, int adflags)
1469 static char pathbuf[ MAXPATHLEN + 1];
1473 if ( adflags & ADFLAGS_DIR ) {
1474 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1476 if ( l && l < MAXPATHLEN) {
1479 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1481 if (NULL != ( slash = strrchr( path, '/' )) ) {
1484 /* XXX we must return NULL here and test in the caller */
1487 memcpy( pathbuf, path, l);
1492 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1493 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1499 /* -------------------------
1500 * Support inherited protection modes for AppleDouble files. The supplied
1501 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1502 * and that value is returned.
1504 char *ad_dir(const char *path)
1506 static char modebuf[ MAXPATHLEN + 1];
1509 * For a path with directories in it, remove the final component
1510 * (path or subdirectory name) to get the name we want to stat.
1511 * For a path which is just a filename, use "." instead.
1513 slash = strrchr( path, '/' );
1518 if (len >= MAXPATHLEN) {
1519 errno = ENAMETOOLONG;
1520 return NULL; /* can't do it */
1522 memcpy( modebuf, path, len );
1523 modebuf[len] = '\0';
1524 /* is last char a '/' ? */
1525 if (slash[1] == 0) {
1526 slash = modebuf+ len;
1528 while (modebuf < slash && slash[-1] == '/') {
1531 if (modebuf == slash) {
1535 while (modebuf < slash && *slash != '/') {
1538 if (modebuf == slash) {
1541 *slash = '\0'; /* remove pathname component */
1546 modebuf[0] = '.'; /* use current directory */
1551 int ad_setfuid(const uid_t id)
1557 /* ---------------- */
1558 uid_t ad_getfuid(void)
1564 stat path parent directory
1566 int ad_stat(const char *path, struct stat *stbuf)
1573 return stat( p, stbuf );
1577 return access right of path parent directory
1579 int ad_mode( const char *path, mode_t mode)
1582 ad_mode_st(path, &mode, &stbuf);
1587 * Use mkdir() with mode bits taken from ad_mode().
1589 int ad_mkdir( const char *path, mode_t mode)
1595 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1596 path, mode, getcwdpath());
1598 st_invalid = ad_mode_st(path, &mode, &stbuf);
1599 ret = mkdir( path, mode );
1600 if (ret || st_invalid)
1602 ad_chown(path, &stbuf);
1607 static void ad_init_func(struct adouble *ad)
1609 switch (ad->ad_vers) {
1611 ad->ad_ops = &ad_adouble;
1612 ad->ad_rfp = &ad->ad_resource_fork;
1613 ad->ad_mdp = &ad->ad_resource_fork;
1616 ad->ad_ops = &ad_adouble_ea;
1617 ad->ad_rfp = &ad->ad_resource_fork;
1618 ad->ad_mdp = &ad->ad_data_fork;
1621 AFP_PANIC("ad_init: unknown AD version");
1625 ad_data_fileno(ad) = -1;
1626 ad_reso_fileno(ad) = -1;
1627 ad_meta_fileno(ad) = -1;
1628 ad->ad_refcount = 1;
1633 void ad_init_old(struct adouble *ad, int flags, int options)
1635 memset(ad, 0, sizeof(struct adouble));
1636 ad->ad_vers = flags;
1637 ad->ad_options = options;
1641 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1643 memset(ad, 0, sizeof(struct adouble));
1644 ad->ad_vers = vol->v_adouble;
1645 ad->ad_options = vol->v_ad_options;
1650 * Open data-, metadata(header)- or ressource fork
1652 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1653 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1655 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1658 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1661 * Open a files data fork, metadata fork or ressource fork.
1663 * @param ad (rw) pointer to struct adouble
1664 * @param path (r) Path to file or directory
1665 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1666 * ADFLAGS_DF: open data fork
1667 * ADFLAGS_RF: open ressource fork
1668 * ADFLAGS_HF: open header (metadata) file
1669 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1670 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1671 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1673 * Access mode for the forks:
1674 * ADFLAGS_RDONLY: open read only
1675 * ADFLAGS_RDWR: open read write
1678 * ADFLAGS_CREATE: create if not existing
1679 * ADFLAGS_TRUNC: truncate
1682 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1683 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1684 * This basically results in the files being opened RW instead of RDONLY.
1685 * @param mode (r) mode used with O_CREATE
1687 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1688 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1689 * fds of the same file
1691 * @returns 0 on success, any other value indicates an error
1693 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1699 LOG(log_debug, logtype_ad,
1700 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1701 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1702 fullpathname(path), adflags2logstr(adflags),
1703 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1704 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1705 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1706 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1708 if (adflags & ADFLAGS_CHECK_OF)
1709 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1710 adflags |= ADFLAGS_SETSHRMD;
1712 if (adflags & ADFLAGS_SETSHRMD)
1713 /* sharemode locks are stored in the data fork */
1714 adflags |= ADFLAGS_DF;
1716 if (ad->ad_vers == AD_VERSION2) {
1717 if (adflags & ADFLAGS_RF)
1718 adflags |= ADFLAGS_HF;
1719 if (adflags & ADFLAGS_NORF)
1720 adflags |= ADFLAGS_NOHF;
1723 if (ad->ad_inited != AD_INITED) {
1724 ad->ad_adflags = adflags;
1725 ad->ad_inited = AD_INITED;
1727 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1728 if (ad->ad_resource_fork.adf_refcount > 0)
1729 ad->ad_open_forks |= ATTRBIT_ROPEN;
1732 va_start(args, adflags);
1733 if (adflags & ADFLAGS_CREATE)
1734 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1737 if (adflags & ADFLAGS_DF) {
1738 ad->ad_data_refcount++;
1739 if (ad_open_df(path, adflags, mode, ad) != 0) {
1740 ad->ad_data_refcount--;
1745 if (adflags & ADFLAGS_HF) {
1746 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1751 if (adflags & ADFLAGS_RF) {
1752 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1757 if (adflags & ADFLAGS_CHECK_OF) {
1758 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1762 LOG(log_debug, logtype_ad,
1763 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1764 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1765 fullpathname(path), ret,
1766 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1767 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1768 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1769 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1775 * @brief open metadata, possibly as root
1777 * Return only metadata but try very hard ie at first try as user, then try as root.
1779 * @param name name of file/dir
1780 * @param flags ADFLAGS_DIR: name is a directory \n
1781 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1783 * @param adp pointer to struct adouble
1785 int ad_metadata(const char *name, int flags, struct adouble *adp)
1787 int ret, err, oflags;
1789 /* Sanitize flags */
1790 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1792 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1794 ret = ad_open(adp, name, oflags);
1804 * @brief openat like wrapper for ad_metadata
1806 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1812 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1818 if (ad_metadata(name, flags, adp) < 0) {
1825 if (fchdir(cwdfd) != 0) {
1826 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1839 int ad_refresh(const char *path, struct adouble *ad)
1841 switch (ad->ad_vers) {
1843 if (ad_meta_fileno(ad) == -1)
1845 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1849 if (AD_META_OPEN(ad)) {
1850 if (ad_data_fileno(ad) == -1)
1852 // TODO: read meta EA
1855 if (AD_RSRC_OPEN(ad)) {
1856 if (ad_reso_fileno(ad) == -1)
1859 if (fstat(ad_reso_fileno(ad), &st) == -1)
1861 ad->ad_rlen = st.st_size;
1864 if (AD_META_OPEN(ad)) {
1865 if (ad_data_fileno(ad) == -1)
1867 // TODO: read meta EA
1869 if (AD_RSRC_OPEN(ad)) {
1870 if (ad_reso_fileno(ad) == -1)
1872 if (ad_header_read_osx(path, ad, NULL) < 0)
1876 return ad->ad_ops->ad_header_read(path, ad, NULL);
1885 int ad_openat(struct adouble *ad,
1886 int dirfd, /* dir fd openat like */
1896 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1900 va_start(args, adflags);
1901 if (adflags & ADFLAGS_CREATE)
1902 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1905 EC_NEG1( ad_open(ad, path, adflags, mode) );
1908 if (fchdir(cwdfd) != 0) {
1909 AFP_PANIC("ad_openat: cant chdir back");
1920 /* build a resource fork mode from the data fork mode:
1921 * remove X mode and extend header to RW if R or W (W if R for locking),
1923 mode_t ad_hf_mode(mode_t mode)
1925 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1926 /* fnctl lock need write access */
1927 if ((mode & S_IRUSR))
1929 if ((mode & S_IRGRP))
1931 if ((mode & S_IROTH))
1934 /* if write mode set add read mode */
1935 if ((mode & S_IWUSR))
1937 if ((mode & S_IWGRP))
1939 if ((mode & S_IWOTH))