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 );
412 && off < sizeof(ad->ad_data)
413 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
414 ad->ad_eid[ eid ].ade_off = off;
415 ad->ad_eid[ eid ].ade_len = len;
416 } else if (ret == 0) {
418 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %d", eid);
425 /* this reads enough of the header so that we can figure out all of
426 * the entry lengths and offsets. once that's done, we just read/mmap
427 * the rest of the header in.
429 * NOTE: we're assuming that the resource fork is kept at the end of
430 * the file. also, mmapping won't work for the hfs fs until it
431 * understands how to mmap header files. */
432 static int ad_header_read(const char *path, struct adouble *ad, const struct stat *hst)
434 char *buf = ad->ad_data;
440 /* read the header */
441 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
444 if (header_len < AD_HEADER_LEN) {
449 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
450 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
451 ad->ad_magic = ntohl( ad->ad_magic );
452 ad->ad_version = ntohl( ad->ad_version );
454 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
455 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
460 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
461 nentries = ntohs( nentries );
463 /* read in all the entry headers. if we have more than the
464 * maximum, just hope that the rfork is specified early on. */
465 len = nentries*AD_ENTRY_LEN;
467 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
468 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
470 buf += AD_HEADER_LEN;
471 if (len > header_len - AD_HEADER_LEN) {
472 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
477 /* figure out all of the entry offsets and lengths. if we aren't
478 * able to read a resource fork entry, bail. */
479 nentries = len / AD_ENTRY_LEN;
480 if (parse_entries(ad, buf, nentries) != 0) {
481 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
482 path ? fullpathname(path) : "");
484 if (!ad_getentryoff(ad, ADEID_RFORK)
485 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
487 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
492 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
493 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
500 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
501 return 1; /* fail silently */
505 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
510 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
511 int ad_valid_header_osx(const char *path)
515 struct adouble adosx;
516 char *buf = &adosx.ad_data[0];
519 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
521 EC_NEG1( fd = open(path, O_RDONLY) );
523 /* read the header */
524 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
526 if (header_len < AD_HEADER_LEN)
529 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
530 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
531 adosx.ad_magic = ntohl(adosx.ad_magic);
532 adosx.ad_version = ntohl(adosx.ad_version);
534 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
535 LOG(log_warning, logtype_ad, "ad_valid_header_osx(\"%s\"): not an adouble:osx file", fullpathname(path));
539 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
541 * It's a split fork created by OS X, it's not our "own" ._ file
542 * and thus not a valid header in this context.
543 * We allow enumeration and access.
548 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
556 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
557 static int ad_header_read_osx(const char *path, struct adouble *ad, const struct stat *hst)
560 struct adouble adosx;
561 char *buf = &adosx.ad_data[0];
567 memset(buf, 0, sizeof(adosx.ad_data));
569 /* read the header */
570 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
572 if (header_len < AD_HEADER_LEN) {
577 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
578 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
579 adosx.ad_magic = ntohl(adosx.ad_magic);
580 adosx.ad_version = ntohl(adosx.ad_version);
582 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
583 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
588 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
589 nentries = ntohs(nentries);
590 len = nentries * AD_ENTRY_LEN;
592 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
593 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
595 buf += AD_HEADER_LEN;
596 if (len > header_len - AD_HEADER_LEN) {
597 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
602 nentries = len / AD_ENTRY_LEN;
603 if (parse_entries(&adosx, buf, nentries) != 0) {
604 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
605 path ? fullpathname(path) : "");
608 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
609 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
610 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
612 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
619 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
622 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
623 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
629 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
635 char *buf = ad->ad_data;
637 if (ad_meta_fileno(ad) != -1)
638 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
640 header_len = sys_getxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
641 if (header_len < 1) {
642 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
646 if (header_len < AD_DATASZ_EA) {
647 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): short metadata EA", fullpathname(path));
652 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
653 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
655 ad->ad_magic = ntohl( ad->ad_magic );
656 ad->ad_version = ntohl( ad->ad_version );
658 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
659 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
664 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
665 nentries = ntohs( nentries );
666 if (nentries != ADEID_NUM_EA) {
667 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid number of entries: %d", fullpathname(path), nentries);
672 /* Now parse entries */
673 if (parse_entries(ad, buf + AD_HEADER_LEN, nentries)) {
674 LOG(log_warning, logtype_ad, "ad_header_read(%s): malformed AppleDouble",
675 path ? fullpathname(path) : "");
678 if (nentries != ADEID_NUM_EA
679 || !ad_entry(ad, ADEID_FINDERI)
680 || !ad_entry(ad, ADEID_COMMENT)
681 || !ad_entry(ad, ADEID_FILEDATESI)
682 || !ad_entry(ad, ADEID_AFPFILEI)
683 || !ad_entry(ad, ADEID_PRIVDEV)
684 || !ad_entry(ad, ADEID_PRIVINO)
685 || !ad_entry(ad, ADEID_PRIVSYN)
686 || !ad_entry(ad, ADEID_PRIVID)) {
687 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid metadata EA", fullpathname(path));
693 if (ret != 0 && errno == EINVAL) {
695 (void)sys_removexattr(path, AD_EA_META);
697 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): deleted invalid metadata EA", fullpathname(path), nentries);
704 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
707 * path: "/path/.AppleDouble/file"
708 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
710 static int ad_mkrf(const char *path)
714 * Probably .AppleDouble doesn't exist, try to mkdir it.
716 if (NULL == ( slash = strrchr( path, '/' )) ) {
721 if ( ad_mkdir( path, 0777 ) < 0 ) {
729 static int ad_mkrf_ea(const char *path _U_)
731 AFP_PANIC("ad_mkrf_ea: dont use");
736 static int ad_mkrf_osx(const char *path _U_)
742 if we are root change path user/ group
743 It can be a native function for BSD cf. FAQ.Q10
744 path: pathname to chown
745 stbuf: parent directory inode
747 use fstat and fchown or lchown with linux?
749 #define EMULATE_SUIDDIR
751 static int ad_chown(const char *path, struct stat *stbuf)
754 #ifdef EMULATE_SUIDDIR
757 if (default_uid != (uid_t)-1) {
758 /* we are root (admin) */
759 id = (default_uid)?default_uid:stbuf->st_uid;
760 ret = lchown( path, id, stbuf->st_gid );
766 #define DEFMASK 07700 /* be conservative */
769 return access right and inode of path parent directory
771 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
776 if (ad_stat(path, stbuf) != 0) {
780 *mode &= stbuf->st_mode;
784 /* --------------------------- */
785 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
790 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
792 AFP_PANIC("ad_header_upgrade_ea: dont use");
797 * Error handling for adouble header(=metadata) file open error
799 * We're called because opening ADFLAGS_HF caused an error.
800 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
801 * 2. Open non-existent ressource fork, this will just result in first read return EOF
802 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
803 * ought to close it before returning with an error condition.
805 static int ad_error(struct adouble *ad, int adflags)
808 if (adflags & ADFLAGS_NOHF) { /* 1 */
811 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
813 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
814 ad_close( ad, ADFLAGS_DF );
821 * Map ADFLAGS to open() flags
823 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
824 * @param adflags (r) flags from ad_open(..., adflags, ...)
825 * @returns mapped flags suitable for calling open()
827 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
831 if (adflags & ADFLAGS_RDWR)
833 if (adflags & ADFLAGS_RDONLY) {
834 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
835 /* need rw access for locks */
836 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
837 /* need rw access for adouble file for the case:
838 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
843 if (adflags & ADFLAGS_CREATE)
845 if (adflags & ADFLAGS_EXCL)
847 if (adflags & ADFLAGS_TRUNC)
850 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
851 oflags |= O_NOFOLLOW;
856 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
865 LOG(log_debug, logtype_ad,
866 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
867 fullpathname(path), adflags2logstr(adflags),
868 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
869 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
870 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
872 if (ad_data_fileno(ad) != -1) {
873 /* the file is already open, but we want write access: */
874 if ((adflags & ADFLAGS_RDWR)
875 /* and it was denied the first time: */
876 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
880 /* it's not new anymore */
881 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
882 ad->ad_data_fork.adf_refcount++;
886 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
889 if ((adflags & ADFLAGS_CREATE)) {
890 st_invalid = ad_mode_st(path, &admode, &st_dir);
891 if ((ad->ad_options & ADVOL_UNIXPRIV))
895 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
897 if (ad->ad_data_fork.adf_fd == -1) {
902 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
905 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
909 case OPEN_NOFOLLOW_ERRNO:
910 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
911 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
912 free(ad->ad_data_fork.adf_syml);
915 ad->ad_data_fork.adf_syml[lsz] = 0;
916 ad->ad_data_fork.adf_fd = AD_SYMLINK;
924 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
926 ad->ad_data_fork.adf_flags = oflags;
927 adf_lock_init(&ad->ad_data_fork);
928 ad->ad_data_fork.adf_refcount++;
931 LOG(log_debug, logtype_ad,
932 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
933 fullpathname(path), adflags2logstr(adflags), ret,
934 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
935 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
936 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
940 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
945 struct stat *pst = NULL;
947 int oflags, nocreatflags, opened = 0;
951 LOG(log_debug, logtype_ad,
952 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
953 fullpathname(path), adflags2logstr(adflags),
954 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
955 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
956 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
958 if (ad_meta_fileno(ad) != -1) {
959 /* the file is already open, but we want write access: */
960 if ((adflags & ADFLAGS_RDWR) &&
961 /* and it was already denied: */
962 (ad->ad_mdp->adf_flags & O_RDONLY)) {
966 ad_refresh(path, ad);
967 /* it's not new anymore */
968 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
969 ad->ad_mdp->adf_refcount++;
973 ad_p = ad->ad_ops->ad_path(path, adflags);
974 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
975 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
976 fullpathname(path), openflags2logstr(oflags));
977 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
979 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
981 if (ad_meta_fileno(ad) != -1) {
982 ad->ad_mdp->adf_flags = nocreatflags;
988 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
989 nocreatflags &= ~O_RDWR;
990 nocreatflags |= O_RDONLY;
991 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
992 ad->ad_mdp->adf_flags = nocreatflags;
997 if (!(oflags & O_CREAT))
1000 * We're expecting to create a new adouble header file here
1002 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
1003 fullpathname(path));
1006 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1007 if ((ad->ad_options & ADVOL_UNIXPRIV))
1009 admode = ad_hf_mode(admode);
1010 if (errno == ENOENT) {
1011 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
1013 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1014 if ((ad->ad_options & ADVOL_UNIXPRIV))
1016 admode = ad_hf_mode(admode);
1019 /* retry with O_CREAT */
1020 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1021 ad->ad_mdp->adf_flags = oflags;
1022 /* just created, set owner if admin owner (root) */
1024 ad_chown(ad_p, &st_dir);
1031 /* Now we've got a new opened fd, we need to check that in the error case */
1034 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1035 /* check for 0 length files, treat them as new. */
1036 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1037 if (st_meta.st_size == 0)
1038 ad->ad_mdp->adf_flags |= O_TRUNC;
1040 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1045 adf_lock_init(ad->ad_mdp);
1046 ad->ad_mdp->adf_refcount = 1;
1048 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1049 /* This is a new adouble header file, create it */
1050 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1053 /* Read the adouble header in and parse it.*/
1054 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1058 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1059 close(ad_meta_fileno(ad));
1060 ad_meta_fileno(ad) = -1;
1061 ad->ad_mdp->adf_refcount = 0;
1063 LOG(log_debug, logtype_ad,
1064 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1065 fullpathname(path), adflags2logstr(adflags), ret,
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);
1072 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1078 LOG(log_debug, logtype_ad,
1079 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1080 fullpathname(path), adflags2logstr(adflags),
1081 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1082 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1083 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1085 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1087 if (ad_meta_fileno(ad) == AD_SYMLINK)
1090 if (ad_meta_fileno(ad) != -1) {
1091 /* the file is already open, but we want write access: */
1092 if ((oflags & O_RDWR) &&
1093 /* and it was already denied: */
1094 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1095 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1096 fullpathname(path), strerror(errno));
1100 /* it's not new anymore */
1101 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1103 if (oflags & O_RDWR) {
1104 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1105 if (adflags & ADFLAGS_DIR)
1106 /* For directories we open the directory RDONYL so we can later fchdir() */
1107 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1108 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1109 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1111 ad->ad_mdp->adf_flags = oflags;
1115 /* Read the adouble header in and parse it.*/
1116 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1117 if (!(adflags & ADFLAGS_CREATE)) {
1118 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1122 if ((adflags & ADFLAGS_CREATE) && (ad->ad_options & ADVOL_RO)) {
1127 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1129 /* It doesnt exist, EPERM or another error */
1130 if (!(errno == ENOATTR || errno == ENOENT)) {
1131 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1136 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1137 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1139 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1142 if (ad_meta_fileno(ad) != -1)
1143 ad->ad_mdp->adf_refcount++;
1144 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1147 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1148 close(ad_meta_fileno(ad));
1149 ad_meta_fileno(ad) = -1;
1150 ad->ad_mdp->adf_refcount = 0;
1152 LOG(log_debug, logtype_ad,
1153 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1154 fullpathname(path), adflags2logstr(adflags), ret,
1155 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1156 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1157 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1162 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1166 ad->ad_meta_refcount++;
1168 switch (ad->ad_vers) {
1170 ret = ad_open_hf_v2(path, adflags, mode, ad);
1173 ret = ad_open_hf_ea(path, adflags, mode, ad);
1181 ad->ad_meta_refcount--;
1182 ret = ad_error(ad, adflags);
1189 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1191 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1197 if (adflags & ADFLAGS_DIR)
1200 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1205 if (ad && ad_reso_fileno(ad) != -1) {
1206 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1208 } else if (ad && ad_meta_fileno(ad) != -1) {
1209 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1211 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1216 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1217 EC_ZERO( lstat(rfpath, &st));
1218 if (st.st_size > ADEDOFF_RFORK_OSX)
1219 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1224 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1232 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1237 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1238 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1241 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1243 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1245 if (AD_META_OPEN(ad))
1246 ad->ad_reso_refcount++;
1249 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1253 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1258 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1264 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1266 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1268 if (ad_reso_fileno(ad) != -1) {
1269 /* the file is already open, but we want write access: */
1270 if ((oflags & O_RDWR)
1271 /* and it was already denied: */
1272 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1276 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1277 ad->ad_reso_refcount++;
1278 ad->ad_rfp->adf_refcount++;
1279 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1283 if (ad_meta_fileno(ad) < 0)
1285 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1286 if (!(adflags & ADFLAGS_CREATE)) {
1291 if (!(adflags & ADFLAGS_RDONLY)) {
1292 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1297 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1298 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1305 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1310 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1311 AD_EA_RESO, oflags, 0666) );
1315 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1316 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1317 if (!(adflags & ADFLAGS_CREATE)) {
1322 if (!(adflags & ADFLAGS_RDONLY)) {
1323 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1328 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1329 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1336 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1341 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1342 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1348 ad->ad_rfp->adf_refcount = 1;
1349 ad->ad_rfp->adf_flags = oflags;
1350 ad->ad_reso_refcount++;
1353 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1354 if (ad->ad_rfp->adf_flags & O_CREAT) {
1355 /* This is a new adouble header file, create it */
1356 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1358 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1359 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1363 /* Read the adouble header */
1364 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1366 EC_NEG1_LOG( ad_header_read_osx(rfpath, ad, &st) );
1370 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1374 if (opened && (ad_reso_fileno(ad) != -1)) {
1375 close(ad_reso_fileno(ad));
1376 ad_reso_fileno(ad) = -1;
1377 ad->ad_reso_refcount--;
1378 ad->ad_rfp->adf_refcount = 0;
1380 if (adflags & ADFLAGS_NORF) {
1384 (void)ad_close(ad, closeflags);
1390 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1396 * Open ressource fork
1398 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1402 switch (ad->ad_vers) {
1404 ret = ad_open_rf_v2(path, adflags, mode, ad);
1407 ret = ad_open_rf_ea(path, adflags, mode, ad);
1417 /***********************************************************************************
1419 ********************************************************************************* */
1421 off_t ad_getentryoff(const struct adouble *ad, int eid)
1423 if (ad->ad_vers == AD_VERSION2)
1424 return ad->ad_eid[eid].ade_off;
1433 return ADEDOFF_RFORK_OSX;
1436 return ad->ad_eid[eid].ade_off;
1439 AFP_PANIC("What am I doing here?");
1442 const char *ad_path_ea( const char *path, int adflags _U_)
1447 const char *ad_path_osx(const char *path, int adflags _U_)
1449 static char pathbuf[ MAXPATHLEN + 1];
1450 char c, *slash, buf[MAXPATHLEN + 1];
1452 if (!strcmp(path,".")) {
1454 getcwd(buf, MAXPATHLEN);
1457 strlcpy(buf, path, MAXPATHLEN +1);
1459 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1462 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1465 pathbuf[ 0 ] = '\0';
1468 strlcat( pathbuf, "._", MAXPATHLEN +1);
1469 strlcat( pathbuf, slash, MAXPATHLEN +1);
1474 * Put the .AppleDouble where it needs to be:
1476 * / a/.AppleDouble/b
1478 * \ b/.AppleDouble/.Parent
1480 * FIXME: should do something for pathname > MAXPATHLEN
1482 const char *ad_path( const char *path, int adflags)
1484 static char pathbuf[ MAXPATHLEN + 1];
1488 if ( adflags & ADFLAGS_DIR ) {
1489 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1491 if ( l && l < MAXPATHLEN) {
1494 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1496 if (NULL != ( slash = strrchr( path, '/' )) ) {
1499 /* XXX we must return NULL here and test in the caller */
1502 memcpy( pathbuf, path, l);
1507 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1508 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1514 /* -------------------------
1515 * Support inherited protection modes for AppleDouble files. The supplied
1516 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1517 * and that value is returned.
1519 char *ad_dir(const char *path)
1521 static char modebuf[ MAXPATHLEN + 1];
1524 * For a path with directories in it, remove the final component
1525 * (path or subdirectory name) to get the name we want to stat.
1526 * For a path which is just a filename, use "." instead.
1528 slash = strrchr( path, '/' );
1533 if (len >= MAXPATHLEN) {
1534 errno = ENAMETOOLONG;
1535 return NULL; /* can't do it */
1537 memcpy( modebuf, path, len );
1538 modebuf[len] = '\0';
1539 /* is last char a '/' ? */
1540 if (slash[1] == 0) {
1541 slash = modebuf+ len;
1543 while (modebuf < slash && slash[-1] == '/') {
1546 if (modebuf == slash) {
1550 while (modebuf < slash && *slash != '/') {
1553 if (modebuf == slash) {
1556 *slash = '\0'; /* remove pathname component */
1561 modebuf[0] = '.'; /* use current directory */
1566 int ad_setfuid(const uid_t id)
1572 /* ---------------- */
1573 uid_t ad_getfuid(void)
1579 stat path parent directory
1581 int ad_stat(const char *path, struct stat *stbuf)
1588 return stat( p, stbuf );
1592 return access right of path parent directory
1594 int ad_mode( const char *path, mode_t mode)
1597 ad_mode_st(path, &mode, &stbuf);
1602 * Use mkdir() with mode bits taken from ad_mode().
1604 int ad_mkdir( const char *path, mode_t mode)
1610 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1611 path, mode, getcwdpath());
1613 st_invalid = ad_mode_st(path, &mode, &stbuf);
1614 ret = mkdir( path, mode );
1615 if (ret || st_invalid)
1617 ad_chown(path, &stbuf);
1622 static void ad_init_func(struct adouble *ad)
1624 switch (ad->ad_vers) {
1626 ad->ad_ops = &ad_adouble;
1627 ad->ad_rfp = &ad->ad_resource_fork;
1628 ad->ad_mdp = &ad->ad_resource_fork;
1631 ad->ad_ops = &ad_adouble_ea;
1632 ad->ad_rfp = &ad->ad_resource_fork;
1633 ad->ad_mdp = &ad->ad_data_fork;
1636 AFP_PANIC("ad_init: unknown AD version");
1640 ad_data_fileno(ad) = -1;
1641 ad_reso_fileno(ad) = -1;
1642 ad_meta_fileno(ad) = -1;
1643 ad->ad_refcount = 1;
1648 void ad_init_old(struct adouble *ad, int flags, int options)
1650 memset(ad, 0, sizeof(struct adouble));
1651 ad->ad_vers = flags;
1652 ad->ad_options = options;
1656 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1658 memset(ad, 0, sizeof(struct adouble));
1659 ad->ad_vers = vol->v_adouble;
1660 ad->ad_options = vol->v_ad_options;
1665 * Open data-, metadata(header)- or ressource fork
1667 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1668 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1670 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1673 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1676 * Open a files data fork, metadata fork or ressource fork.
1678 * @param ad (rw) pointer to struct adouble
1679 * @param path (r) Path to file or directory
1680 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1681 * ADFLAGS_DF: open data fork
1682 * ADFLAGS_RF: open ressource fork
1683 * ADFLAGS_HF: open header (metadata) file
1684 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1685 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1686 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1688 * Access mode for the forks:
1689 * ADFLAGS_RDONLY: open read only
1690 * ADFLAGS_RDWR: open read write
1693 * ADFLAGS_CREATE: create if not existing
1694 * ADFLAGS_TRUNC: truncate
1697 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1698 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1699 * This basically results in the files being opened RW instead of RDONLY.
1700 * @param mode (r) mode used with O_CREATE
1702 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1703 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1704 * fds of the same file
1706 * @returns 0 on success, any other value indicates an error
1708 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1714 LOG(log_debug, logtype_ad,
1715 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1716 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1717 fullpathname(path), adflags2logstr(adflags),
1718 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1719 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1720 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1721 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1723 if (adflags & ADFLAGS_CHECK_OF)
1724 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1725 adflags |= ADFLAGS_SETSHRMD;
1727 if (adflags & ADFLAGS_SETSHRMD)
1728 /* sharemode locks are stored in the data fork */
1729 adflags |= ADFLAGS_DF;
1731 if (ad->ad_vers == AD_VERSION2) {
1732 if (adflags & ADFLAGS_RF)
1733 adflags |= ADFLAGS_HF;
1734 if (adflags & ADFLAGS_NORF)
1735 adflags |= ADFLAGS_NOHF;
1738 if (ad->ad_inited != AD_INITED) {
1739 ad->ad_adflags = adflags;
1740 ad->ad_inited = AD_INITED;
1742 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1743 if (ad->ad_resource_fork.adf_refcount > 0)
1744 ad->ad_open_forks |= ATTRBIT_ROPEN;
1747 va_start(args, adflags);
1748 if (adflags & ADFLAGS_CREATE)
1749 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1752 if (adflags & ADFLAGS_DF) {
1753 ad->ad_data_refcount++;
1754 if (ad_open_df(path, adflags, mode, ad) != 0) {
1755 ad->ad_data_refcount--;
1760 if (adflags & ADFLAGS_HF) {
1761 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1766 if (adflags & ADFLAGS_RF) {
1767 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1772 if (adflags & ADFLAGS_CHECK_OF) {
1773 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1777 LOG(log_debug, logtype_ad,
1778 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1779 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1780 fullpathname(path), ret,
1781 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1782 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1783 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1784 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1790 * @brief open metadata, possibly as root
1792 * Return only metadata but try very hard ie at first try as user, then try as root.
1794 * @param name name of file/dir
1795 * @param flags ADFLAGS_DIR: name is a directory \n
1796 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1798 * @param adp pointer to struct adouble
1800 int ad_metadata(const char *name, int flags, struct adouble *adp)
1802 int ret, err, oflags;
1804 /* Sanitize flags */
1805 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1807 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1809 ret = ad_open(adp, name, oflags);
1819 * @brief openat like wrapper for ad_metadata
1821 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1827 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1833 if (ad_metadata(name, flags, adp) < 0) {
1840 if (fchdir(cwdfd) != 0) {
1841 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1854 int ad_refresh(const char *path, struct adouble *ad)
1856 switch (ad->ad_vers) {
1858 if (ad_meta_fileno(ad) == -1)
1860 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1864 if (AD_META_OPEN(ad)) {
1865 if (ad_data_fileno(ad) == -1)
1867 // TODO: read meta EA
1870 if (AD_RSRC_OPEN(ad)) {
1871 if (ad_reso_fileno(ad) == -1)
1874 if (fstat(ad_reso_fileno(ad), &st) == -1)
1876 ad->ad_rlen = st.st_size;
1879 if (AD_META_OPEN(ad)) {
1880 if (ad_data_fileno(ad) == -1)
1882 // TODO: read meta EA
1884 if (AD_RSRC_OPEN(ad)) {
1885 if (ad_reso_fileno(ad) == -1)
1887 if (ad_header_read_osx(path, ad, NULL) < 0)
1891 return ad->ad_ops->ad_header_read(path, ad, NULL);
1900 int ad_openat(struct adouble *ad,
1901 int dirfd, /* dir fd openat like */
1911 if (((cwdfd = open(".", O_RDONLY)) == -1) || (fchdir(dirfd) != 0))
1915 va_start(args, adflags);
1916 if (adflags & ADFLAGS_CREATE)
1917 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1920 EC_NEG1( ad_open(ad, path, adflags, mode) );
1923 if (fchdir(cwdfd) != 0) {
1924 AFP_PANIC("ad_openat: cant chdir back");
1935 /* build a resource fork mode from the data fork mode:
1936 * remove X mode and extend header to RW if R or W (W if R for locking),
1938 mode_t ad_hf_mode(mode_t mode)
1940 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1941 /* fnctl lock need write access */
1942 if ((mode & S_IRUSR))
1944 if ((mode & S_IRGRP))
1946 if ((mode & S_IROTH))
1949 /* if write mode set add read mode */
1950 if ((mode & S_IWUSR))
1952 if ((mode & S_IWGRP))
1954 if ((mode & S_IWOTH))