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 /* set default creator/type fields */
350 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
351 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
353 /* make things invisible */
354 if ((ad->ad_options & ADVOL_INVDOTS)
356 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
358 ashort = htons(ATTRBIT_INVISIBLE);
359 ad_setattr(ad, ashort);
360 ashort = htons(FINDERINFO_INVISIBLE);
361 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
364 /* put something sane in the date fields */
367 if (lstat(path, &st) != 0)
370 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
371 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
372 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
373 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
378 /* -------------------------------------
381 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
383 uint32_t eid, len, off;
386 /* now, read in the entry bits */
387 for (; nentries > 0; nentries-- ) {
388 memcpy(&eid, buf, sizeof( eid ));
389 eid = get_eid(ntohl(eid));
390 buf += sizeof( eid );
391 memcpy(&off, buf, sizeof( off ));
393 buf += sizeof( off );
394 memcpy(&len, buf, sizeof( len ));
396 buf += sizeof( len );
400 && off < sizeof(ad->ad_data)
401 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
402 ad->ad_eid[ eid ].ade_off = off;
403 ad->ad_eid[ eid ].ade_len = len;
404 } else if (!warning) {
406 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %d", eid);
411 /* this reads enough of the header so that we can figure out all of
412 * the entry lengths and offsets. once that's done, we just read/mmap
413 * the rest of the header in.
415 * NOTE: we're assuming that the resource fork is kept at the end of
416 * the file. also, mmapping won't work for the hfs fs until it
417 * understands how to mmap header files. */
418 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
420 char *buf = ad->ad_data;
426 /* read the header */
427 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
430 if (header_len < AD_HEADER_LEN) {
435 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
436 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
437 ad->ad_magic = ntohl( ad->ad_magic );
438 ad->ad_version = ntohl( ad->ad_version );
440 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
441 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
446 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
447 nentries = ntohs( nentries );
449 /* read in all the entry headers. if we have more than the
450 * maximum, just hope that the rfork is specified early on. */
451 len = nentries*AD_ENTRY_LEN;
453 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
454 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
456 buf += AD_HEADER_LEN;
457 if (len > header_len - AD_HEADER_LEN) {
458 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
463 /* figure out all of the entry offsets and lengths. if we aren't
464 * able to read a resource fork entry, bail. */
465 nentries = len / AD_ENTRY_LEN;
466 parse_entries(ad, buf, nentries);
467 if (!ad_getentryoff(ad, ADEID_RFORK)
468 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
470 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
475 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
476 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
483 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
484 return 1; /* fail silently */
488 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
493 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
494 int ad_valid_header_osx(const char *path)
498 struct adouble adosx;
499 char *buf = &adosx.ad_data[0];
502 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
504 EC_NEG1( fd = open(path, O_RDONLY) );
506 /* read the header */
507 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
509 if (header_len < AD_HEADER_LEN)
512 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
513 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
514 adosx.ad_magic = ntohl(adosx.ad_magic);
515 adosx.ad_version = ntohl(adosx.ad_version);
517 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
518 LOG(log_warning, logtype_ad, "ad_valid_header_osx(\"%s\"): not an adouble:osx file", fullpathname(path));
522 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
524 * It's a split fork created by OS X, it's not our "own" ._ file
525 * and thus not a valid header in this context.
526 * We allow enumeration and access.
531 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
539 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
540 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
543 struct adouble adosx;
544 char *buf = &adosx.ad_data[0];
550 memset(buf, 0, sizeof(adosx.ad_data));
552 /* read the header */
553 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
555 if (header_len < AD_HEADER_LEN) {
560 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
561 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
562 adosx.ad_magic = ntohl(adosx.ad_magic);
563 adosx.ad_version = ntohl(adosx.ad_version);
565 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
566 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
571 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
572 nentries = ntohs(nentries);
573 len = nentries * AD_ENTRY_LEN;
575 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
576 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
578 buf += AD_HEADER_LEN;
579 if (len > header_len - AD_HEADER_LEN) {
580 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
585 nentries = len / AD_ENTRY_LEN;
586 parse_entries(&adosx, buf, nentries);
588 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
589 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
590 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
592 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
599 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
602 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
603 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
609 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
615 char *buf = ad->ad_data;
617 if (ad_meta_fileno(ad) != -1)
618 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
620 header_len = sys_getxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
621 if (header_len < 1) {
622 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
626 if (header_len < AD_DATASZ_EA) {
627 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): short metadata EA", fullpathname(path));
632 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
633 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
635 ad->ad_magic = ntohl( ad->ad_magic );
636 ad->ad_version = ntohl( ad->ad_version );
638 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
639 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
644 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
645 nentries = ntohs( nentries );
646 if (nentries != ADEID_NUM_EA) {
647 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid number of entries: %d", fullpathname(path), nentries);
652 /* Now parse entries */
653 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
655 if (nentries != ADEID_NUM_EA
656 || !ad_entry(ad, ADEID_FINDERI)
657 || !ad_entry(ad, ADEID_COMMENT)
658 || !ad_entry(ad, ADEID_FILEDATESI)
659 || !ad_entry(ad, ADEID_AFPFILEI)
660 || !ad_entry(ad, ADEID_PRIVDEV)
661 || !ad_entry(ad, ADEID_PRIVINO)
662 || !ad_entry(ad, ADEID_PRIVSYN)
663 || !ad_entry(ad, ADEID_PRIVID)) {
664 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): invalid metadata EA", fullpathname(path));
670 if (ret != 0 && errno == EINVAL) {
672 (void)sys_removexattr(path, AD_EA_META);
674 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): deleted invalid metadata EA", fullpathname(path), nentries);
681 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
684 * path: "/path/.AppleDouble/file"
685 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
687 static int ad_mkrf(const char *path)
691 * Probably .AppleDouble doesn't exist, try to mkdir it.
693 if (NULL == ( slash = strrchr( path, '/' )) ) {
698 if ( ad_mkdir( path, 0777 ) < 0 ) {
706 static int ad_mkrf_ea(const char *path _U_)
708 AFP_PANIC("ad_mkrf_ea: dont use");
713 static int ad_mkrf_osx(const char *path _U_)
719 if we are root change path user/ group
720 It can be a native function for BSD cf. FAQ.Q10
721 path: pathname to chown
722 stbuf: parent directory inode
724 use fstat and fchown or lchown with linux?
726 #define EMULATE_SUIDDIR
728 static int ad_chown(const char *path, struct stat *stbuf)
731 #ifdef EMULATE_SUIDDIR
734 if (default_uid != (uid_t)-1) {
735 /* we are root (admin) */
736 id = (default_uid)?default_uid:stbuf->st_uid;
737 ret = lchown( path, id, stbuf->st_gid );
743 #define DEFMASK 07700 /* be conservative */
746 return access right and inode of path parent directory
748 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
753 if (ad_stat(path, stbuf) != 0) {
757 *mode &= stbuf->st_mode;
761 /* --------------------------- */
762 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
767 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
769 AFP_PANIC("ad_header_upgrade_ea: dont use");
774 * Error handling for adouble header(=metadata) file open error
776 * We're called because opening ADFLAGS_HF caused an error.
777 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
778 * 2. Open non-existent ressource fork, this will just result in first read return EOF
779 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
780 * ought to close it before returning with an error condition.
782 static int ad_error(struct adouble *ad, int adflags)
785 if (adflags & ADFLAGS_NOHF) { /* 1 */
788 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
790 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
791 ad_close( ad, ADFLAGS_DF );
798 * Map ADFLAGS to open() flags
800 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
801 * @param adflags (r) flags from ad_open(..., adflags, ...)
802 * @returns mapped flags suitable for calling open()
804 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
808 if (adflags & ADFLAGS_RDWR)
810 if (adflags & ADFLAGS_RDONLY) {
811 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
812 /* need rw access for locks */
813 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
814 /* need rw access for adouble file for the case:
815 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
820 if (adflags & ADFLAGS_CREATE)
822 if (adflags & ADFLAGS_EXCL)
824 if (adflags & ADFLAGS_TRUNC)
827 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
828 oflags |= O_NOFOLLOW;
833 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
842 LOG(log_debug, logtype_ad,
843 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
844 fullpathname(path), adflags2logstr(adflags),
845 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
846 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
847 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
849 if (ad_data_fileno(ad) != -1) {
850 /* the file is already open, but we want write access: */
851 if ((adflags & ADFLAGS_RDWR)
852 /* and it was denied the first time: */
853 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
857 /* it's not new anymore */
858 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
859 ad->ad_data_fork.adf_refcount++;
863 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
866 if ((adflags & ADFLAGS_CREATE)) {
867 st_invalid = ad_mode_st(path, &admode, &st_dir);
868 if ((ad->ad_options & ADVOL_UNIXPRIV))
872 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
874 if (ad->ad_data_fork.adf_fd == -1) {
879 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
882 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
886 case OPEN_NOFOLLOW_ERRNO:
887 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
888 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
889 free(ad->ad_data_fork.adf_syml);
892 ad->ad_data_fork.adf_syml[lsz] = 0;
893 ad->ad_data_fork.adf_fd = AD_SYMLINK;
901 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
903 ad->ad_data_fork.adf_flags = oflags;
904 adf_lock_init(&ad->ad_data_fork);
905 ad->ad_data_fork.adf_refcount++;
908 LOG(log_debug, logtype_ad,
909 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
910 fullpathname(path), adflags2logstr(adflags), ret,
911 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
912 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
913 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
917 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
922 struct stat *pst = NULL;
924 int oflags, nocreatflags, opened = 0;
928 LOG(log_debug, logtype_ad,
929 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
930 fullpathname(path), adflags2logstr(adflags),
931 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
932 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
933 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
935 if (ad_meta_fileno(ad) != -1) {
936 /* the file is already open, but we want write access: */
937 if ((adflags & ADFLAGS_RDWR) &&
938 /* and it was already denied: */
939 (ad->ad_mdp->adf_flags & O_RDONLY)) {
943 ad_refresh(path, ad);
944 /* it's not new anymore */
945 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
946 ad->ad_mdp->adf_refcount++;
950 ad_p = ad->ad_ops->ad_path(path, adflags);
951 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
952 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
953 fullpathname(path), openflags2logstr(oflags));
954 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
956 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
958 if (ad_meta_fileno(ad) != -1) {
959 ad->ad_mdp->adf_flags = nocreatflags;
965 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
966 nocreatflags &= ~O_RDWR;
967 nocreatflags |= O_RDONLY;
968 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
969 ad->ad_mdp->adf_flags = nocreatflags;
974 if (!(oflags & O_CREAT))
977 * We're expecting to create a new adouble header file here
979 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
983 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
984 if ((ad->ad_options & ADVOL_UNIXPRIV))
986 admode = ad_hf_mode(admode);
987 if (errno == ENOENT) {
988 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
990 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
991 if ((ad->ad_options & ADVOL_UNIXPRIV))
993 admode = ad_hf_mode(admode);
996 /* retry with O_CREAT */
997 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
998 ad->ad_mdp->adf_flags = oflags;
999 /* just created, set owner if admin owner (root) */
1001 ad_chown(ad_p, &st_dir);
1008 /* Now we've got a new opened fd, we need to check that in the error case */
1011 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1012 /* check for 0 length files, treat them as new. */
1013 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1014 if (st_meta.st_size == 0)
1015 ad->ad_mdp->adf_flags |= O_TRUNC;
1017 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1022 adf_lock_init(ad->ad_mdp);
1023 ad->ad_mdp->adf_refcount = 1;
1025 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1026 /* This is a new adouble header file, create it */
1027 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1030 /* Read the adouble header in and parse it.*/
1031 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1035 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1036 close(ad_meta_fileno(ad));
1037 ad_meta_fileno(ad) = -1;
1038 ad->ad_mdp->adf_refcount = 0;
1040 LOG(log_debug, logtype_ad,
1041 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1042 fullpathname(path), adflags2logstr(adflags), ret,
1043 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1044 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1045 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1049 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1055 LOG(log_debug, logtype_ad,
1056 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1057 fullpathname(path), adflags2logstr(adflags),
1058 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1059 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1060 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1062 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1064 if (ad_meta_fileno(ad) == AD_SYMLINK)
1067 if (ad_meta_fileno(ad) != -1) {
1068 /* the file is already open, but we want write access: */
1069 if ((oflags & O_RDWR) &&
1070 /* and it was already denied: */
1071 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1072 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1073 fullpathname(path), strerror(errno));
1077 /* it's not new anymore */
1078 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1080 if (oflags & O_RDWR) {
1081 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1082 if (adflags & ADFLAGS_DIR)
1083 /* For directories we open the directory RDONYL so we can later fchdir() */
1084 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1085 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1086 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1088 ad->ad_mdp->adf_flags = oflags;
1092 /* Read the adouble header in and parse it.*/
1093 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1094 if (!(adflags & ADFLAGS_CREATE)) {
1095 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1099 if ((adflags & ADFLAGS_CREATE) && (ad->ad_options & ADVOL_RO)) {
1104 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1106 /* It doesnt exist, EPERM or another error */
1107 if (!(errno == ENOATTR || errno == ENOENT)) {
1108 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1113 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1114 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1116 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1119 if (ad_meta_fileno(ad) != -1)
1120 ad->ad_mdp->adf_refcount++;
1121 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1124 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1125 close(ad_meta_fileno(ad));
1126 ad_meta_fileno(ad) = -1;
1127 ad->ad_mdp->adf_refcount = 0;
1129 LOG(log_debug, logtype_ad,
1130 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1131 fullpathname(path), adflags2logstr(adflags), ret,
1132 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1133 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1134 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1139 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1143 ad->ad_meta_refcount++;
1145 switch (ad->ad_vers) {
1147 ret = ad_open_hf_v2(path, adflags, mode, ad);
1150 ret = ad_open_hf_ea(path, adflags, mode, ad);
1158 ad->ad_meta_refcount--;
1159 ret = ad_error(ad, adflags);
1166 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1168 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1174 if (adflags & ADFLAGS_DIR)
1177 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1182 if (ad && ad_reso_fileno(ad) != -1) {
1183 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1185 } else if (ad && ad_meta_fileno(ad) != -1) {
1186 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1188 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1193 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1194 EC_ZERO( lstat(rfpath, &st));
1195 if (st.st_size > ADEDOFF_RFORK_OSX)
1196 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1201 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1209 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1214 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1215 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1218 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1220 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1222 if (AD_META_OPEN(ad))
1223 ad->ad_reso_refcount++;
1226 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1230 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1235 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1241 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1243 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1245 if (ad_reso_fileno(ad) != -1) {
1246 /* the file is already open, but we want write access: */
1247 if ((oflags & O_RDWR)
1248 /* and it was already denied: */
1249 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1253 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1254 ad->ad_reso_refcount++;
1255 ad->ad_rfp->adf_refcount++;
1256 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1260 if (ad_meta_fileno(ad) < 0)
1262 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1263 if (!(adflags & ADFLAGS_CREATE)) {
1268 if (!(adflags & ADFLAGS_RDONLY)) {
1269 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1274 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1275 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1282 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(path), strerror(errno));
1287 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1288 AD_EA_RESO, oflags, 0666) );
1292 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1293 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1294 if (!(adflags & ADFLAGS_CREATE)) {
1299 if (!(adflags & ADFLAGS_RDONLY)) {
1300 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1305 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1306 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1313 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1318 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1319 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1325 ad->ad_rfp->adf_refcount = 1;
1326 ad->ad_rfp->adf_flags = oflags;
1327 ad->ad_reso_refcount++;
1330 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1331 if (ad->ad_rfp->adf_flags & O_CREAT) {
1332 /* This is a new adouble header file, create it */
1333 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1335 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1336 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1340 /* Read the adouble header */
1341 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1343 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1347 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1351 if (opened && (ad_reso_fileno(ad) != -1)) {
1352 close(ad_reso_fileno(ad));
1353 ad_reso_fileno(ad) = -1;
1354 ad->ad_reso_refcount--;
1355 ad->ad_rfp->adf_refcount = 0;
1357 if (adflags & ADFLAGS_NORF) {
1361 (void)ad_close(ad, closeflags);
1367 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1373 * Open ressource fork
1375 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1379 switch (ad->ad_vers) {
1381 ret = ad_open_rf_v2(path, adflags, mode, ad);
1384 ret = ad_open_rf_ea(path, adflags, mode, ad);
1394 /***********************************************************************************
1396 ********************************************************************************* */
1398 off_t ad_getentryoff(const struct adouble *ad, int eid)
1400 if (ad->ad_vers == AD_VERSION2)
1401 return ad->ad_eid[eid].ade_off;
1410 return ADEDOFF_RFORK_OSX;
1413 return ad->ad_eid[eid].ade_off;
1416 AFP_PANIC("What am I doing here?");
1419 const char *ad_path_ea( const char *path, int adflags _U_)
1424 const char *ad_path_osx(const char *path, int adflags _U_)
1426 static char pathbuf[ MAXPATHLEN + 1];
1427 char c, *slash, buf[MAXPATHLEN + 1];
1429 if (!strcmp(path,".")) {
1431 getcwd(buf, MAXPATHLEN);
1434 strlcpy(buf, path, MAXPATHLEN +1);
1436 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1439 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1442 pathbuf[ 0 ] = '\0';
1445 strlcat( pathbuf, "._", MAXPATHLEN +1);
1446 strlcat( pathbuf, slash, MAXPATHLEN +1);
1451 * Put the .AppleDouble where it needs to be:
1453 * / a/.AppleDouble/b
1455 * \ b/.AppleDouble/.Parent
1457 * FIXME: should do something for pathname > MAXPATHLEN
1459 const char *ad_path( const char *path, int adflags)
1461 static char pathbuf[ MAXPATHLEN + 1];
1465 if ( adflags & ADFLAGS_DIR ) {
1466 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1468 if ( l && l < MAXPATHLEN) {
1471 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1473 if (NULL != ( slash = strrchr( path, '/' )) ) {
1476 /* XXX we must return NULL here and test in the caller */
1479 memcpy( pathbuf, path, l);
1484 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1485 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1491 /* -------------------------
1492 * Support inherited protection modes for AppleDouble files. The supplied
1493 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1494 * and that value is returned.
1496 char *ad_dir(const char *path)
1498 static char modebuf[ MAXPATHLEN + 1];
1501 * For a path with directories in it, remove the final component
1502 * (path or subdirectory name) to get the name we want to stat.
1503 * For a path which is just a filename, use "." instead.
1505 slash = strrchr( path, '/' );
1510 if (len >= MAXPATHLEN) {
1511 errno = ENAMETOOLONG;
1512 return NULL; /* can't do it */
1514 memcpy( modebuf, path, len );
1515 modebuf[len] = '\0';
1516 /* is last char a '/' ? */
1517 if (slash[1] == 0) {
1518 slash = modebuf+ len;
1520 while (modebuf < slash && slash[-1] == '/') {
1523 if (modebuf == slash) {
1527 while (modebuf < slash && *slash != '/') {
1530 if (modebuf == slash) {
1533 *slash = '\0'; /* remove pathname component */
1538 modebuf[0] = '.'; /* use current directory */
1543 int ad_setfuid(const uid_t id)
1549 /* ---------------- */
1550 uid_t ad_getfuid(void)
1556 stat path parent directory
1558 int ad_stat(const char *path, struct stat *stbuf)
1565 return stat( p, stbuf );
1569 return access right of path parent directory
1571 int ad_mode( const char *path, mode_t mode)
1574 ad_mode_st(path, &mode, &stbuf);
1579 * Use mkdir() with mode bits taken from ad_mode().
1581 int ad_mkdir( const char *path, mode_t mode)
1587 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1588 path, mode, getcwdpath());
1590 st_invalid = ad_mode_st(path, &mode, &stbuf);
1591 ret = mkdir( path, mode );
1592 if (ret || st_invalid)
1594 ad_chown(path, &stbuf);
1599 static void ad_init_func(struct adouble *ad)
1601 switch (ad->ad_vers) {
1603 ad->ad_ops = &ad_adouble;
1604 ad->ad_rfp = &ad->ad_resource_fork;
1605 ad->ad_mdp = &ad->ad_resource_fork;
1608 ad->ad_ops = &ad_adouble_ea;
1609 ad->ad_rfp = &ad->ad_resource_fork;
1610 ad->ad_mdp = &ad->ad_data_fork;
1613 AFP_PANIC("ad_init: unknown AD version");
1617 ad_data_fileno(ad) = -1;
1618 ad_reso_fileno(ad) = -1;
1619 ad_meta_fileno(ad) = -1;
1620 ad->ad_refcount = 1;
1625 void ad_init_old(struct adouble *ad, int flags, int options)
1627 memset(ad, 0, sizeof(struct adouble));
1628 ad->ad_vers = flags;
1629 ad->ad_options = options;
1633 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1635 memset(ad, 0, sizeof(struct adouble));
1636 ad->ad_vers = vol->v_adouble;
1637 ad->ad_options = vol->v_ad_options;
1642 * Open data-, metadata(header)- or ressource fork
1644 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1645 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1647 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1650 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1653 * Open a files data fork, metadata fork or ressource fork.
1655 * @param ad (rw) pointer to struct adouble
1656 * @param path (r) Path to file or directory
1657 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1658 * ADFLAGS_DF: open data fork
1659 * ADFLAGS_RF: open ressource fork
1660 * ADFLAGS_HF: open header (metadata) file
1661 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1662 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1663 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1665 * Access mode for the forks:
1666 * ADFLAGS_RDONLY: open read only
1667 * ADFLAGS_RDWR: open read write
1670 * ADFLAGS_CREATE: create if not existing
1671 * ADFLAGS_TRUNC: truncate
1674 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1675 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1676 * This basically results in the files being opened RW instead of RDONLY.
1677 * @param mode (r) mode used with O_CREATE
1679 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1680 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1681 * fds of the same file
1683 * @returns 0 on success, any other value indicates an error
1685 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1691 LOG(log_debug, logtype_ad,
1692 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1693 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1694 fullpathname(path), adflags2logstr(adflags),
1695 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1696 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1697 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1698 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1700 if (adflags & ADFLAGS_CHECK_OF)
1701 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1702 adflags |= ADFLAGS_SETSHRMD;
1704 if (adflags & ADFLAGS_SETSHRMD)
1705 /* sharemode locks are stored in the data fork */
1706 adflags |= ADFLAGS_DF;
1708 if (ad->ad_vers == AD_VERSION2) {
1709 if (adflags & ADFLAGS_RF)
1710 adflags |= ADFLAGS_HF;
1711 if (adflags & ADFLAGS_NORF)
1712 adflags |= ADFLAGS_NOHF;
1715 if (ad->ad_inited != AD_INITED) {
1716 ad->ad_adflags = adflags;
1717 ad->ad_inited = AD_INITED;
1719 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1720 if (ad->ad_resource_fork.adf_refcount > 0)
1721 ad->ad_open_forks |= ATTRBIT_ROPEN;
1724 va_start(args, adflags);
1725 if (adflags & ADFLAGS_CREATE)
1726 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1729 if (adflags & ADFLAGS_DF) {
1730 ad->ad_data_refcount++;
1731 if (ad_open_df(path, adflags, mode, ad) != 0) {
1732 ad->ad_data_refcount--;
1737 if (adflags & ADFLAGS_HF) {
1738 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1743 if (adflags & ADFLAGS_RF) {
1744 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1749 if (adflags & ADFLAGS_CHECK_OF) {
1750 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1754 LOG(log_debug, logtype_ad,
1755 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1756 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1757 fullpathname(path), ret,
1758 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1759 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1760 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1761 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1767 * @brief open metadata, possibly as root
1769 * Return only metadata but try very hard ie at first try as user, then try as root.
1771 * @param name name of file/dir
1772 * @param flags ADFLAGS_DIR: name is a directory \n
1773 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1775 * @param adp pointer to struct adouble
1777 int ad_metadata(const char *name, int flags, struct adouble *adp)
1779 int ret, err, oflags;
1781 /* Sanitize flags */
1782 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1784 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1786 ret = ad_open(adp, name, oflags);
1796 * @brief openat like wrapper for ad_metadata
1798 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1804 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1810 if (ad_metadata(name, flags, adp) < 0) {
1817 if (fchdir(cwdfd) != 0) {
1818 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1831 int ad_refresh(const char *path, struct adouble *ad)
1833 switch (ad->ad_vers) {
1835 if (ad_meta_fileno(ad) == -1)
1837 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1841 if (AD_META_OPEN(ad)) {
1842 if (ad_data_fileno(ad) == -1)
1844 // TODO: read meta EA
1847 if (AD_RSRC_OPEN(ad)) {
1848 if (ad_reso_fileno(ad) == -1)
1851 if (fstat(ad_reso_fileno(ad), &st) == -1)
1853 ad->ad_rlen = st.st_size;
1856 if (AD_META_OPEN(ad)) {
1857 if (ad_data_fileno(ad) == -1)
1859 // TODO: read meta EA
1861 if (AD_RSRC_OPEN(ad)) {
1862 if (ad_reso_fileno(ad) == -1)
1864 if (ad_header_read_osx(path, ad, NULL) < 0)
1868 return ad->ad_ops->ad_header_read(path, ad, NULL);
1877 int ad_openat(struct adouble *ad,
1878 int dirfd, /* dir fd openat like */
1888 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1892 va_start(args, adflags);
1893 if (adflags & ADFLAGS_CREATE)
1894 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1897 EC_NEG1( ad_open(ad, path, adflags, mode) );
1900 if (fchdir(cwdfd) != 0) {
1901 AFP_PANIC("ad_openat: cant chdir back");
1912 /* build a resource fork mode from the data fork mode:
1913 * remove X mode and extend header to RW if R or W (W if R for locking),
1915 mode_t ad_hf_mode(mode_t mode)
1917 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1918 /* fnctl lock need write access */
1919 if ((mode & S_IRUSR))
1921 if ((mode & S_IRGRP))
1923 if ((mode & S_IROTH))
1926 /* if write mode set add read mode */
1927 if ((mode & S_IWUSR))
1929 if ((mode & S_IWGRP))
1931 if ((mode & S_IWOTH))