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);
390 /* -------------------------------------
393 static void 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 (!warning) {
418 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %d", eid);
423 /* this reads enough of the header so that we can figure out all of
424 * the entry lengths and offsets. once that's done, we just read/mmap
425 * the rest of the header in.
427 * NOTE: we're assuming that the resource fork is kept at the end of
428 * the file. also, mmapping won't work for the hfs fs until it
429 * understands how to mmap header files. */
430 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
432 char *buf = ad->ad_data;
438 /* read the header */
439 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
442 if (header_len < AD_HEADER_LEN) {
447 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
448 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
449 ad->ad_magic = ntohl( ad->ad_magic );
450 ad->ad_version = ntohl( ad->ad_version );
452 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
453 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
458 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
459 nentries = ntohs( nentries );
461 /* read in all the entry headers. if we have more than the
462 * maximum, just hope that the rfork is specified early on. */
463 len = nentries*AD_ENTRY_LEN;
465 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
466 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
468 buf += AD_HEADER_LEN;
469 if (len > header_len - AD_HEADER_LEN) {
470 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
475 /* figure out all of the entry offsets and lengths. if we aren't
476 * able to read a resource fork entry, bail. */
477 nentries = len / AD_ENTRY_LEN;
478 parse_entries(ad, buf, nentries);
479 if (!ad_getentryoff(ad, ADEID_RFORK)
480 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
482 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
487 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
488 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
495 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
496 return 1; /* fail silently */
500 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
505 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
506 int ad_valid_header_osx(const char *path)
510 struct adouble adosx;
511 char *buf = &adosx.ad_data[0];
514 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
516 EC_NEG1( fd = open(path, O_RDONLY) );
518 /* read the header */
519 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
521 if (header_len < AD_HEADER_LEN)
524 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
525 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
526 adosx.ad_magic = ntohl(adosx.ad_magic);
527 adosx.ad_version = ntohl(adosx.ad_version);
529 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
530 LOG(log_warning, logtype_ad, "ad_valid_header_osx(\"%s\"): not an adouble:osx file", fullpathname(path));
534 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
536 * It's a split fork created by OS X, it's not our "own" ._ file
537 * and thus not a valid header in this context.
538 * We allow enumeration and access.
543 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
551 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
552 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
555 struct adouble adosx;
556 char *buf = &adosx.ad_data[0];
562 memset(buf, 0, sizeof(adosx.ad_data));
564 /* read the header */
565 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
567 if (header_len < AD_HEADER_LEN) {
572 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
573 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
574 adosx.ad_magic = ntohl(adosx.ad_magic);
575 adosx.ad_version = ntohl(adosx.ad_version);
577 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
578 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
583 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
584 nentries = ntohs(nentries);
585 len = nentries * AD_ENTRY_LEN;
587 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
588 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
590 buf += AD_HEADER_LEN;
591 if (len > header_len - AD_HEADER_LEN) {
592 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
597 nentries = len / AD_ENTRY_LEN;
598 parse_entries(&adosx, buf, nentries);
600 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
601 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
602 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
604 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
611 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
614 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
615 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
621 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
627 char *buf = ad->ad_data;
629 if (ad_meta_fileno(ad) != -1)
630 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
632 header_len = sys_getxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
633 if (header_len < 1) {
634 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
638 if (header_len < AD_DATASZ_EA) {
639 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): short metadata EA", fullpathname(path));
644 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
645 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
647 ad->ad_magic = ntohl( ad->ad_magic );
648 ad->ad_version = ntohl( ad->ad_version );
650 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
651 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
656 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
657 nentries = ntohs( nentries );
658 if (nentries != ADEID_NUM_EA) {
659 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid number of entries: %d", fullpathname(path), nentries);
664 /* Now parse entries */
665 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
667 if (nentries != ADEID_NUM_EA
668 || !ad_entry(ad, ADEID_FINDERI)
669 || !ad_entry(ad, ADEID_COMMENT)
670 || !ad_entry(ad, ADEID_FILEDATESI)
671 || !ad_entry(ad, ADEID_AFPFILEI)
672 || !ad_entry(ad, ADEID_PRIVDEV)
673 || !ad_entry(ad, ADEID_PRIVINO)
674 || !ad_entry(ad, ADEID_PRIVSYN)
675 || !ad_entry(ad, ADEID_PRIVID)) {
676 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid metadata EA", fullpathname(path));
682 if (ret != 0 && errno == EINVAL) {
684 (void)sys_removexattr(path, AD_EA_META);
686 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): deleted invalid metadata EA", fullpathname(path), nentries);
693 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
696 * path: "/path/.AppleDouble/file"
697 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
699 static int ad_mkrf(const char *path)
703 * Probably .AppleDouble doesn't exist, try to mkdir it.
705 if (NULL == ( slash = strrchr( path, '/' )) ) {
710 if ( ad_mkdir( path, 0777 ) < 0 ) {
718 static int ad_mkrf_ea(const char *path _U_)
720 AFP_PANIC("ad_mkrf_ea: dont use");
725 static int ad_mkrf_osx(const char *path _U_)
731 if we are root change path user/ group
732 It can be a native function for BSD cf. FAQ.Q10
733 path: pathname to chown
734 stbuf: parent directory inode
736 use fstat and fchown or lchown with linux?
738 #define EMULATE_SUIDDIR
740 static int ad_chown(const char *path, struct stat *stbuf)
743 #ifdef EMULATE_SUIDDIR
746 if (default_uid != (uid_t)-1) {
747 /* we are root (admin) */
748 id = (default_uid)?default_uid:stbuf->st_uid;
749 ret = lchown( path, id, stbuf->st_gid );
755 #define DEFMASK 07700 /* be conservative */
758 return access right and inode of path parent directory
760 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
765 if (ad_stat(path, stbuf) != 0) {
769 *mode &= stbuf->st_mode;
773 /* --------------------------- */
774 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
779 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
781 AFP_PANIC("ad_header_upgrade_ea: dont use");
786 * Error handling for adouble header(=metadata) file open error
788 * We're called because opening ADFLAGS_HF caused an error.
789 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
790 * 2. Open non-existent ressource fork, this will just result in first read return EOF
791 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
792 * ought to close it before returning with an error condition.
794 static int ad_error(struct adouble *ad, int adflags)
797 if (adflags & ADFLAGS_NOHF) { /* 1 */
800 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
802 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
803 ad_close( ad, ADFLAGS_DF );
810 * Map ADFLAGS to open() flags
812 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
813 * @param adflags (r) flags from ad_open(..., adflags, ...)
814 * @returns mapped flags suitable for calling open()
816 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
820 if (adflags & ADFLAGS_RDWR)
822 if (adflags & ADFLAGS_RDONLY) {
823 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
824 /* need rw access for locks */
825 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
826 /* need rw access for adouble file for the case:
827 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
832 if (adflags & ADFLAGS_CREATE)
834 if (adflags & ADFLAGS_EXCL)
836 if (adflags & ADFLAGS_TRUNC)
839 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
840 oflags |= O_NOFOLLOW;
845 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
854 LOG(log_debug, logtype_ad,
855 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
856 fullpathname(path), adflags2logstr(adflags),
857 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
858 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
859 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
861 if (ad_data_fileno(ad) != -1) {
862 /* the file is already open, but we want write access: */
863 if ((adflags & ADFLAGS_RDWR)
864 /* and it was denied the first time: */
865 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
869 /* it's not new anymore */
870 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
871 ad->ad_data_fork.adf_refcount++;
875 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
878 if ((adflags & ADFLAGS_CREATE)) {
879 st_invalid = ad_mode_st(path, &admode, &st_dir);
880 if ((ad->ad_options & ADVOL_UNIXPRIV))
884 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
886 if (ad->ad_data_fork.adf_fd == -1) {
891 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
894 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
898 case OPEN_NOFOLLOW_ERRNO:
899 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
900 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
901 free(ad->ad_data_fork.adf_syml);
904 ad->ad_data_fork.adf_syml[lsz] = 0;
905 ad->ad_data_fork.adf_fd = AD_SYMLINK;
913 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
915 ad->ad_data_fork.adf_flags = oflags;
916 adf_lock_init(&ad->ad_data_fork);
917 ad->ad_data_fork.adf_refcount++;
920 LOG(log_debug, logtype_ad,
921 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
922 fullpathname(path), adflags2logstr(adflags), ret,
923 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
924 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
925 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
929 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
934 struct stat *pst = NULL;
936 int oflags, nocreatflags, opened = 0;
940 LOG(log_debug, logtype_ad,
941 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
942 fullpathname(path), adflags2logstr(adflags),
943 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
944 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
945 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
947 if (ad_meta_fileno(ad) != -1) {
948 /* the file is already open, but we want write access: */
949 if ((adflags & ADFLAGS_RDWR) &&
950 /* and it was already denied: */
951 (ad->ad_mdp->adf_flags & O_RDONLY)) {
955 ad_refresh(path, ad);
956 /* it's not new anymore */
957 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
958 ad->ad_mdp->adf_refcount++;
962 ad_p = ad->ad_ops->ad_path(path, adflags);
963 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
964 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
965 fullpathname(path), openflags2logstr(oflags));
966 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
968 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
970 if (ad_meta_fileno(ad) != -1) {
971 ad->ad_mdp->adf_flags = nocreatflags;
977 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
978 nocreatflags &= ~O_RDWR;
979 nocreatflags |= O_RDONLY;
980 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
981 ad->ad_mdp->adf_flags = nocreatflags;
986 if (!(oflags & O_CREAT))
989 * We're expecting to create a new adouble header file here
991 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
995 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
996 if ((ad->ad_options & ADVOL_UNIXPRIV))
998 admode = ad_hf_mode(admode);
999 if (errno == ENOENT) {
1000 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
1002 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1003 if ((ad->ad_options & ADVOL_UNIXPRIV))
1005 admode = ad_hf_mode(admode);
1008 /* retry with O_CREAT */
1009 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1010 ad->ad_mdp->adf_flags = oflags;
1011 /* just created, set owner if admin owner (root) */
1013 ad_chown(ad_p, &st_dir);
1020 /* Now we've got a new opened fd, we need to check that in the error case */
1023 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1024 /* check for 0 length files, treat them as new. */
1025 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1026 if (st_meta.st_size == 0)
1027 ad->ad_mdp->adf_flags |= O_TRUNC;
1029 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1034 adf_lock_init(ad->ad_mdp);
1035 ad->ad_mdp->adf_refcount = 1;
1037 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1038 /* This is a new adouble header file, create it */
1039 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1042 /* Read the adouble header in and parse it.*/
1043 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1047 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1048 close(ad_meta_fileno(ad));
1049 ad_meta_fileno(ad) = -1;
1050 ad->ad_mdp->adf_refcount = 0;
1052 LOG(log_debug, logtype_ad,
1053 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1054 fullpathname(path), adflags2logstr(adflags), ret,
1055 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1056 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1057 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1061 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1067 LOG(log_debug, logtype_ad,
1068 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1069 fullpathname(path), adflags2logstr(adflags),
1070 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1071 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1072 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1074 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1076 if (ad_meta_fileno(ad) == AD_SYMLINK)
1079 if (ad_meta_fileno(ad) != -1) {
1080 /* the file is already open, but we want write access: */
1081 if ((oflags & O_RDWR) &&
1082 /* and it was already denied: */
1083 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1084 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1085 fullpathname(path), strerror(errno));
1089 /* it's not new anymore */
1090 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1092 if (oflags & O_RDWR) {
1093 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1094 if (adflags & ADFLAGS_DIR)
1095 /* For directories we open the directory RDONYL so we can later fchdir() */
1096 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1097 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1098 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1100 ad->ad_mdp->adf_flags = oflags;
1104 /* Read the adouble header in and parse it.*/
1105 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1106 if (!(adflags & ADFLAGS_CREATE)) {
1107 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1111 if ((adflags & ADFLAGS_CREATE) && (ad->ad_options & ADVOL_RO)) {
1116 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1118 /* It doesnt exist, EPERM or another error */
1119 if (!(errno == ENOATTR || errno == ENOENT)) {
1120 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1125 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1126 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1128 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1131 if (ad_meta_fileno(ad) != -1)
1132 ad->ad_mdp->adf_refcount++;
1133 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1136 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1137 close(ad_meta_fileno(ad));
1138 ad_meta_fileno(ad) = -1;
1139 ad->ad_mdp->adf_refcount = 0;
1141 LOG(log_debug, logtype_ad,
1142 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1143 fullpathname(path), adflags2logstr(adflags), ret,
1144 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1145 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1146 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1151 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1155 ad->ad_meta_refcount++;
1157 switch (ad->ad_vers) {
1159 ret = ad_open_hf_v2(path, adflags, mode, ad);
1162 ret = ad_open_hf_ea(path, adflags, mode, ad);
1170 ad->ad_meta_refcount--;
1171 ret = ad_error(ad, adflags);
1178 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1180 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1186 if (adflags & ADFLAGS_DIR)
1189 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1194 if (ad && ad_reso_fileno(ad) != -1) {
1195 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1197 } else if (ad && ad_meta_fileno(ad) != -1) {
1198 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1200 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1205 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1206 EC_ZERO( lstat(rfpath, &st));
1207 if (st.st_size > ADEDOFF_RFORK_OSX)
1208 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1213 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1221 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1226 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1227 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1230 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1232 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1234 if (AD_META_OPEN(ad))
1235 ad->ad_reso_refcount++;
1238 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1242 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1247 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1253 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1255 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1257 if (ad_reso_fileno(ad) != -1) {
1258 /* the file is already open, but we want write access: */
1259 if ((oflags & O_RDWR)
1260 /* and it was already denied: */
1261 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1265 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1266 ad->ad_reso_refcount++;
1267 ad->ad_rfp->adf_refcount++;
1268 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1272 if (ad_meta_fileno(ad) < 0)
1274 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1275 if (!(adflags & ADFLAGS_CREATE)) {
1280 if (!(adflags & ADFLAGS_RDONLY)) {
1281 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1286 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1287 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1294 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1299 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1300 AD_EA_RESO, oflags, 0666) );
1304 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1305 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1306 if (!(adflags & ADFLAGS_CREATE)) {
1311 if (!(adflags & ADFLAGS_RDONLY)) {
1312 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1317 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1318 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1325 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1330 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1331 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1337 ad->ad_rfp->adf_refcount = 1;
1338 ad->ad_rfp->adf_flags = oflags;
1339 ad->ad_reso_refcount++;
1342 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1343 if (ad->ad_rfp->adf_flags & O_CREAT) {
1344 /* This is a new adouble header file, create it */
1345 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1347 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1348 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1352 /* Read the adouble header */
1353 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1355 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1359 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1363 if (opened && (ad_reso_fileno(ad) != -1)) {
1364 close(ad_reso_fileno(ad));
1365 ad_reso_fileno(ad) = -1;
1366 ad->ad_reso_refcount--;
1367 ad->ad_rfp->adf_refcount = 0;
1369 if (adflags & ADFLAGS_NORF) {
1373 (void)ad_close(ad, closeflags);
1379 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1385 * Open ressource fork
1387 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1391 switch (ad->ad_vers) {
1393 ret = ad_open_rf_v2(path, adflags, mode, ad);
1396 ret = ad_open_rf_ea(path, adflags, mode, ad);
1406 /***********************************************************************************
1408 ********************************************************************************* */
1410 off_t ad_getentryoff(const struct adouble *ad, int eid)
1412 if (ad->ad_vers == AD_VERSION2)
1413 return ad->ad_eid[eid].ade_off;
1422 return ADEDOFF_RFORK_OSX;
1425 return ad->ad_eid[eid].ade_off;
1428 AFP_PANIC("What am I doing here?");
1431 const char *ad_path_ea( const char *path, int adflags _U_)
1436 const char *ad_path_osx(const char *path, int adflags _U_)
1438 static char pathbuf[ MAXPATHLEN + 1];
1439 char c, *slash, buf[MAXPATHLEN + 1];
1441 if (!strcmp(path,".")) {
1443 getcwd(buf, MAXPATHLEN);
1446 strlcpy(buf, path, MAXPATHLEN +1);
1448 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1451 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1454 pathbuf[ 0 ] = '\0';
1457 strlcat( pathbuf, "._", MAXPATHLEN +1);
1458 strlcat( pathbuf, slash, MAXPATHLEN +1);
1463 * Put the .AppleDouble where it needs to be:
1465 * / a/.AppleDouble/b
1467 * \ b/.AppleDouble/.Parent
1469 * FIXME: should do something for pathname > MAXPATHLEN
1471 const char *ad_path( const char *path, int adflags)
1473 static char pathbuf[ MAXPATHLEN + 1];
1477 if ( adflags & ADFLAGS_DIR ) {
1478 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1480 if ( l && l < MAXPATHLEN) {
1483 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1485 if (NULL != ( slash = strrchr( path, '/' )) ) {
1488 /* XXX we must return NULL here and test in the caller */
1491 memcpy( pathbuf, path, l);
1496 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1497 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1503 /* -------------------------
1504 * Support inherited protection modes for AppleDouble files. The supplied
1505 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1506 * and that value is returned.
1508 char *ad_dir(const char *path)
1510 static char modebuf[ MAXPATHLEN + 1];
1513 * For a path with directories in it, remove the final component
1514 * (path or subdirectory name) to get the name we want to stat.
1515 * For a path which is just a filename, use "." instead.
1517 slash = strrchr( path, '/' );
1522 if (len >= MAXPATHLEN) {
1523 errno = ENAMETOOLONG;
1524 return NULL; /* can't do it */
1526 memcpy( modebuf, path, len );
1527 modebuf[len] = '\0';
1528 /* is last char a '/' ? */
1529 if (slash[1] == 0) {
1530 slash = modebuf+ len;
1532 while (modebuf < slash && slash[-1] == '/') {
1535 if (modebuf == slash) {
1539 while (modebuf < slash && *slash != '/') {
1542 if (modebuf == slash) {
1545 *slash = '\0'; /* remove pathname component */
1550 modebuf[0] = '.'; /* use current directory */
1555 int ad_setfuid(const uid_t id)
1561 /* ---------------- */
1562 uid_t ad_getfuid(void)
1568 stat path parent directory
1570 int ad_stat(const char *path, struct stat *stbuf)
1577 return stat( p, stbuf );
1581 return access right of path parent directory
1583 int ad_mode( const char *path, mode_t mode)
1586 ad_mode_st(path, &mode, &stbuf);
1591 * Use mkdir() with mode bits taken from ad_mode().
1593 int ad_mkdir( const char *path, mode_t mode)
1599 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1600 path, mode, getcwdpath());
1602 st_invalid = ad_mode_st(path, &mode, &stbuf);
1603 ret = mkdir( path, mode );
1604 if (ret || st_invalid)
1606 ad_chown(path, &stbuf);
1611 static void ad_init_func(struct adouble *ad)
1613 switch (ad->ad_vers) {
1615 ad->ad_ops = &ad_adouble;
1616 ad->ad_rfp = &ad->ad_resource_fork;
1617 ad->ad_mdp = &ad->ad_resource_fork;
1620 ad->ad_ops = &ad_adouble_ea;
1621 ad->ad_rfp = &ad->ad_resource_fork;
1622 ad->ad_mdp = &ad->ad_data_fork;
1625 AFP_PANIC("ad_init: unknown AD version");
1629 ad_data_fileno(ad) = -1;
1630 ad_reso_fileno(ad) = -1;
1631 ad_meta_fileno(ad) = -1;
1632 ad->ad_refcount = 1;
1637 void ad_init_old(struct adouble *ad, int flags, int options)
1639 memset(ad, 0, sizeof(struct adouble));
1640 ad->ad_vers = flags;
1641 ad->ad_options = options;
1645 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1647 memset(ad, 0, sizeof(struct adouble));
1648 ad->ad_vers = vol->v_adouble;
1649 ad->ad_options = vol->v_ad_options;
1654 * Open data-, metadata(header)- or ressource fork
1656 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1657 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1659 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1662 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1665 * Open a files data fork, metadata fork or ressource fork.
1667 * @param ad (rw) pointer to struct adouble
1668 * @param path (r) Path to file or directory
1669 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1670 * ADFLAGS_DF: open data fork
1671 * ADFLAGS_RF: open ressource fork
1672 * ADFLAGS_HF: open header (metadata) file
1673 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1674 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1675 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1677 * Access mode for the forks:
1678 * ADFLAGS_RDONLY: open read only
1679 * ADFLAGS_RDWR: open read write
1682 * ADFLAGS_CREATE: create if not existing
1683 * ADFLAGS_TRUNC: truncate
1686 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1687 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1688 * This basically results in the files being opened RW instead of RDONLY.
1689 * @param mode (r) mode used with O_CREATE
1691 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1692 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1693 * fds of the same file
1695 * @returns 0 on success, any other value indicates an error
1697 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1703 LOG(log_debug, logtype_ad,
1704 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1705 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1706 fullpathname(path), adflags2logstr(adflags),
1707 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1708 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1709 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1710 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1712 if (adflags & ADFLAGS_CHECK_OF)
1713 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1714 adflags |= ADFLAGS_SETSHRMD;
1716 if (adflags & ADFLAGS_SETSHRMD)
1717 /* sharemode locks are stored in the data fork */
1718 adflags |= ADFLAGS_DF;
1720 if (ad->ad_vers == AD_VERSION2) {
1721 if (adflags & ADFLAGS_RF)
1722 adflags |= ADFLAGS_HF;
1723 if (adflags & ADFLAGS_NORF)
1724 adflags |= ADFLAGS_NOHF;
1727 if (ad->ad_inited != AD_INITED) {
1728 ad->ad_adflags = adflags;
1729 ad->ad_inited = AD_INITED;
1731 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1732 if (ad->ad_resource_fork.adf_refcount > 0)
1733 ad->ad_open_forks |= ATTRBIT_ROPEN;
1736 va_start(args, adflags);
1737 if (adflags & ADFLAGS_CREATE)
1738 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1741 if (adflags & ADFLAGS_DF) {
1742 ad->ad_data_refcount++;
1743 if (ad_open_df(path, adflags, mode, ad) != 0) {
1744 ad->ad_data_refcount--;
1749 if (adflags & ADFLAGS_HF) {
1750 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1755 if (adflags & ADFLAGS_RF) {
1756 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1761 if (adflags & ADFLAGS_CHECK_OF) {
1762 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1766 LOG(log_debug, logtype_ad,
1767 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1768 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1769 fullpathname(path), ret,
1770 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1771 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1772 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1773 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1779 * @brief open metadata, possibly as root
1781 * Return only metadata but try very hard ie at first try as user, then try as root.
1783 * @param name name of file/dir
1784 * @param flags ADFLAGS_DIR: name is a directory \n
1785 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1787 * @param adp pointer to struct adouble
1789 int ad_metadata(const char *name, int flags, struct adouble *adp)
1791 int ret, err, oflags;
1793 /* Sanitize flags */
1794 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1796 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1798 ret = ad_open(adp, name, oflags);
1808 * @brief openat like wrapper for ad_metadata
1810 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1816 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1822 if (ad_metadata(name, flags, adp) < 0) {
1829 if (fchdir(cwdfd) != 0) {
1830 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1843 int ad_refresh(const char *path, struct adouble *ad)
1845 switch (ad->ad_vers) {
1847 if (ad_meta_fileno(ad) == -1)
1849 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1853 if (AD_META_OPEN(ad)) {
1854 if (ad_data_fileno(ad) == -1)
1856 // TODO: read meta EA
1859 if (AD_RSRC_OPEN(ad)) {
1860 if (ad_reso_fileno(ad) == -1)
1863 if (fstat(ad_reso_fileno(ad), &st) == -1)
1865 ad->ad_rlen = st.st_size;
1868 if (AD_META_OPEN(ad)) {
1869 if (ad_data_fileno(ad) == -1)
1871 // TODO: read meta EA
1873 if (AD_RSRC_OPEN(ad)) {
1874 if (ad_reso_fileno(ad) == -1)
1876 if (ad_header_read_osx(path, ad, NULL) < 0)
1880 return ad->ad_ops->ad_header_read(path, ad, NULL);
1889 int ad_openat(struct adouble *ad,
1890 int dirfd, /* dir fd openat like */
1900 if (((cwdfd = open(".", O_RDONLY)) == -1) || (fchdir(dirfd) != 0))
1904 LOG(log_note, logtype_ad, "ad_openat: cwdfd: %d", cwdfd);
1906 va_start(args, adflags);
1907 if (adflags & ADFLAGS_CREATE)
1908 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1911 EC_NEG1( ad_open(ad, path, adflags, mode) );
1913 LOG(log_note, logtype_ad, "ad_openat: cwdfd: %d", cwdfd);
1916 if (fchdir(cwdfd) != 0) {
1917 AFP_PANIC("ad_openat: cant chdir back");
1928 /* build a resource fork mode from the data fork mode:
1929 * remove X mode and extend header to RW if R or W (W if R for locking),
1931 mode_t ad_hf_mode(mode_t mode)
1933 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1934 /* fnctl lock need write access */
1935 if ((mode & S_IRUSR))
1937 if ((mode & S_IRGRP))
1939 if ((mode & S_IROTH))
1942 /* if write mode set add read mode */
1943 if ((mode & S_IWUSR))
1945 if ((mode & S_IWGRP))
1947 if ((mode & S_IWOTH))