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);
111 static int ad_mkrf_ea(const char *path);
112 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst);
113 static int ad_header_upgrade_ea(struct adouble *ad, const char *name);
114 static int ad_reso_size(const char *path, int adflags, struct adouble *ad);
115 static int ad_mkrf_osx(const char *path);
118 static struct adouble_fops ad_adouble = {
121 &ad_rebuild_adouble_header_v2,
126 static struct adouble_fops ad_adouble_ea = {
134 &ad_rebuild_adouble_header_ea,
136 &ad_header_upgrade_ea,
139 static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
140 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
141 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
142 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
143 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
144 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
145 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
146 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
147 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
148 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
149 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
150 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
151 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
152 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
156 /* Using Extended Attributes */
157 static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
158 {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
159 {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
160 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
161 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
162 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV_EA, ADEDLEN_INIT},
163 {ADEID_PRIVINO, ADEDOFF_PRIVINO_EA, ADEDLEN_INIT},
164 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN_EA, ADEDLEN_INIT},
165 {ADEID_PRIVID, ADEDOFF_PRIVID_EA, ADEDLEN_INIT},
169 #define ADFLAGS2LOGSTRBUFSIZ 128
170 const char *adflags2logstr(int adflags)
173 static char buf[ADFLAGS2LOGSTRBUFSIZ];
177 if (adflags & ADFLAGS_DF) {
178 strlcat(buf, "DF", ADFLAGS2LOGSTRBUFSIZ);
181 if (adflags & ADFLAGS_RF) {
183 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
184 strlcat(buf, "RF", ADFLAGS2LOGSTRBUFSIZ);
187 if (adflags & ADFLAGS_NORF) {
189 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
190 strlcat(buf, "NORF", ADFLAGS2LOGSTRBUFSIZ);
193 if (adflags & ADFLAGS_HF) {
195 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
196 strlcat(buf, "HF", ADFLAGS2LOGSTRBUFSIZ);
199 if (adflags & ADFLAGS_NOHF) {
201 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
202 strlcat(buf, "NOHF", ADFLAGS2LOGSTRBUFSIZ);
205 if (adflags & ADFLAGS_DIR) {
207 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
208 strlcat(buf, "DIR", ADFLAGS2LOGSTRBUFSIZ);
211 if (adflags & ADFLAGS_CHECK_OF) {
213 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
214 strlcat(buf, "OF", ADFLAGS2LOGSTRBUFSIZ);
217 if (adflags & ADFLAGS_SETSHRMD) {
219 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
220 strlcat(buf, "SHRMD", ADFLAGS2LOGSTRBUFSIZ);
223 if (adflags & ADFLAGS_RDWR) {
225 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
226 strlcat(buf, "O_RDWR", ADFLAGS2LOGSTRBUFSIZ);
229 if (adflags & ADFLAGS_RDONLY) {
231 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
232 strlcat(buf, "O_RDONLY", ADFLAGS2LOGSTRBUFSIZ);
235 if (adflags & ADFLAGS_CREATE) {
237 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
238 strlcat(buf, "O_CREAT", ADFLAGS2LOGSTRBUFSIZ);
241 if (adflags & ADFLAGS_EXCL) {
243 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
244 strlcat(buf, "O_EXCL", ADFLAGS2LOGSTRBUFSIZ);
247 if (adflags & ADFLAGS_TRUNC) {
249 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
250 strlcat(buf, "O_TRUNC", ADFLAGS2LOGSTRBUFSIZ);
257 #define OPENFLAGS2LOGSTRBUFSIZ 128
258 const char *openflags2logstr(int oflags)
261 static char buf[OPENFLAGS2LOGSTRBUFSIZ];
265 if ((oflags & O_RDONLY) || (oflags == O_RDONLY)) {
266 strlcat(buf, "O_RDONLY", OPENFLAGS2LOGSTRBUFSIZ);
269 if (oflags & O_RDWR) {
271 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
272 strlcat(buf, "O_RDWR", OPENFLAGS2LOGSTRBUFSIZ);
275 if (oflags & O_CREAT) {
277 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
278 strlcat(buf, "O_CREAT", OPENFLAGS2LOGSTRBUFSIZ);
281 if (oflags & O_TRUNC) {
283 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
284 strlcat(buf, "O_TRUNC", OPENFLAGS2LOGSTRBUFSIZ);
287 if (oflags & O_EXCL) {
289 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
290 strlcat(buf, "O_EXCL", OPENFLAGS2LOGSTRBUFSIZ);
296 static uint32_t get_eid(uint32_t eid)
301 return ADEID_PRIVDEV;
303 return ADEID_PRIVINO;
305 return ADEID_PRIVSYN;
312 /* ----------------------------------- */
313 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
315 const struct entry *eid;
319 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\")", path);
321 if (ad->ad_magic == AD_MAGIC) {
322 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\"): already initialized", path);
326 ad->ad_magic = AD_MAGIC;
327 ad->ad_version = ad->ad_vers & 0x0f0000;
328 if (!ad->ad_version) {
329 ad->ad_version = AD_VERSION;
332 memset(ad->ad_data, 0, sizeof(ad->ad_data));
334 if (ad->ad_vers == AD_VERSION2)
336 else if (ad->ad_vers == AD_VERSION_EA)
337 eid = entry_order_ea;
342 ad->ad_eid[eid->id].ade_off = eid->offset;
343 ad->ad_eid[eid->id].ade_len = eid->len;
347 /* put something sane in the directory finderinfo */
350 if (lstat(path, &st) != 0)
354 if ((adflags & ADFLAGS_DIR)) {
355 /* set default view */
356 ashort = htons(FINDERINFO_CLOSEDVIEW);
357 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
359 /* set default creator/type fields */
360 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
361 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
364 /* make things invisible */
365 if ((ad->ad_options & ADVOL_INVDOTS)
367 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
369 ashort = htons(ATTRBIT_INVISIBLE);
370 ad_setattr(ad, ashort);
371 ashort = htons(FINDERINFO_INVISIBLE);
372 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
375 /* put something sane in the date fields */
376 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
377 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
378 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
379 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
384 /* -------------------------------------
387 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
389 uint32_t eid, len, off;
392 /* now, read in the entry bits */
393 for (; nentries > 0; nentries-- ) {
394 memcpy(&eid, buf, sizeof( eid ));
395 eid = get_eid(ntohl(eid));
396 buf += sizeof( eid );
397 memcpy(&off, buf, sizeof( off ));
399 buf += sizeof( off );
400 memcpy(&len, buf, sizeof( len ));
402 buf += sizeof( len );
406 && off < sizeof(ad->ad_data)
407 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
408 ad->ad_eid[ eid ].ade_off = off;
409 ad->ad_eid[ eid ].ade_len = len;
410 } else if (!warning) {
412 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %d", eid);
417 /* this reads enough of the header so that we can figure out all of
418 * the entry lengths and offsets. once that's done, we just read/mmap
419 * the rest of the header in.
421 * NOTE: we're assuming that the resource fork is kept at the end of
422 * the file. also, mmapping won't work for the hfs fs until it
423 * understands how to mmap header files. */
424 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
426 char *buf = ad->ad_data;
432 /* read the header */
433 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
436 if (header_len < AD_HEADER_LEN) {
441 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
442 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
443 ad->ad_magic = ntohl( ad->ad_magic );
444 ad->ad_version = ntohl( ad->ad_version );
446 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
447 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
452 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
453 nentries = ntohs( nentries );
455 /* read in all the entry headers. if we have more than the
456 * maximum, just hope that the rfork is specified early on. */
457 len = nentries*AD_ENTRY_LEN;
459 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
460 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
462 buf += AD_HEADER_LEN;
463 if (len > header_len - AD_HEADER_LEN) {
464 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
469 /* figure out all of the entry offsets and lengths. if we aren't
470 * able to read a resource fork entry, bail. */
471 nentries = len / AD_ENTRY_LEN;
472 parse_entries(ad, buf, nentries);
473 if (!ad_getentryoff(ad, ADEID_RFORK)
474 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
476 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
481 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
482 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
489 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
490 return 1; /* fail silently */
494 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
499 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
500 int ad_valid_header_osx(const char *path)
504 struct adouble adosx;
505 char *buf = &adosx.ad_data[0];
508 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
510 EC_NEG1( fd = open(path, O_RDONLY) );
512 /* read the header */
513 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
515 if (header_len < AD_HEADER_LEN)
518 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
519 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
520 adosx.ad_magic = ntohl(adosx.ad_magic);
521 adosx.ad_version = ntohl(adosx.ad_version);
523 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
524 LOG(log_warning, logtype_ad, "ad_valid_header_osx: not an adouble:osx file");
528 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
530 * It's a split fork created by OS X, it's not our "own" ._ file
531 * and thus not a valid header in this context.
532 * We allow enumeration and access.
537 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
545 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
546 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
549 struct adouble adosx;
550 char *buf = &adosx.ad_data[0];
556 memset(buf, 0, sizeof(adosx.ad_data));
558 /* read the header */
559 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
561 if (header_len < AD_HEADER_LEN) {
566 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
567 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
568 adosx.ad_magic = ntohl(adosx.ad_magic);
569 adosx.ad_version = ntohl(adosx.ad_version);
571 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
572 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
577 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
578 nentries = ntohs(nentries);
579 len = nentries * AD_ENTRY_LEN;
581 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
582 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
584 buf += AD_HEADER_LEN;
585 if (len > header_len - AD_HEADER_LEN) {
586 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
591 nentries = len / AD_ENTRY_LEN;
592 parse_entries(&adosx, buf, nentries);
594 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
595 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
596 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
598 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
605 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
608 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
609 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
615 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
620 char *buf = ad->ad_data;
622 if (ad_meta_fileno(ad) != -1)
623 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
625 header_len = sys_lgetxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
626 if (header_len < 1) {
627 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
631 if (header_len < AD_HEADER_LEN) {
632 LOG(log_error, logtype_ad, "ad_header_read_ea: bogus AppleDouble header.");
637 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
638 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
640 ad->ad_magic = ntohl( ad->ad_magic );
641 ad->ad_version = ntohl( ad->ad_version );
643 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
644 LOG(log_error, logtype_ad, "ad_header_read_ea: wrong magic or version");
649 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
650 nentries = ntohs( nentries );
652 /* Protect against bogus nentries */
653 len = nentries * AD_ENTRY_LEN;
654 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
655 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
656 if (len > header_len - AD_HEADER_LEN) {
657 LOG(log_error, logtype_ad, "ad_header_read_ea: can't read entry info.");
661 nentries = len / AD_ENTRY_LEN;
663 /* Now parse entries */
664 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
670 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
673 * path: "/path/.AppleDouble/file"
674 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
676 static int ad_mkrf(const char *path)
680 * Probably .AppleDouble doesn't exist, try to mkdir it.
682 if (NULL == ( slash = strrchr( path, '/' )) ) {
687 if ( ad_mkdir( path, 0777 ) < 0 ) {
694 static int ad_mkrf_ea(const char *path _U_)
696 AFP_PANIC("ad_mkrf_ea: dont use");
700 static int ad_mkrf_osx(const char *path _U_)
706 if we are root change path user/ group
707 It can be a native function for BSD cf. FAQ.Q10
708 path: pathname to chown
709 stbuf: parent directory inode
711 use fstat and fchown or lchown with linux?
713 #define EMULATE_SUIDDIR
715 static int ad_chown(const char *path, struct stat *stbuf)
718 #ifdef EMULATE_SUIDDIR
721 if (default_uid != (uid_t)-1) {
722 /* we are root (admin) */
723 id = (default_uid)?default_uid:stbuf->st_uid;
724 ret = lchown( path, id, stbuf->st_gid );
730 #define DEFMASK 07700 /* be conservative */
733 return access right and inode of path parent directory
735 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
740 if (ad_stat(path, stbuf) != 0) {
744 *mode &= stbuf->st_mode;
748 /* --------------------------- */
749 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
754 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
756 AFP_PANIC("ad_header_upgrade_ea: dont use");
761 * Error handling for adouble header(=metadata) file open error
763 * We're called because opening ADFLAGS_HF caused an error.
764 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
765 * 2. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
766 * ought to close it before returning with an error condition.
768 static int ad_error(struct adouble *ad, int adflags)
771 if (adflags & ADFLAGS_NOHF) { /* 1 */
774 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 2 */
775 ad_close( ad, ADFLAGS_DF );
782 * Map ADFLAGS to open() flags
784 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
785 * @param adflags (r) flags from ad_open(..., adflags, ...)
786 * @returns mapped flags suitable for calling open()
788 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
792 if (adflags & ADFLAGS_RDWR)
794 if (adflags & ADFLAGS_RDONLY) {
795 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
796 /* need rw access for locks */
797 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
798 /* need rw access for adouble file for the case:
799 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
804 if (adflags & ADFLAGS_CREATE)
806 if (adflags & ADFLAGS_EXCL)
808 if (adflags & ADFLAGS_TRUNC)
814 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
823 LOG(log_debug, logtype_ad,
824 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
825 fullpathname(path), adflags2logstr(adflags),
826 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
827 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
828 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
830 if (ad_data_fileno(ad) != -1) {
831 /* the file is already open, but we want write access: */
832 if ((adflags & ADFLAGS_RDWR)
833 /* and it was denied the first time: */
834 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
838 /* it's not new anymore */
839 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
840 ad->ad_data_fork.adf_refcount++;
844 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_DF, adflags);
847 if ((adflags & ADFLAGS_CREATE)) {
848 st_invalid = ad_mode_st(path, &admode, &st_dir);
849 if ((ad->ad_options & ADVOL_UNIXPRIV))
853 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
855 if (ad->ad_data_fork.adf_fd == -1) {
860 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
863 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
867 case OPEN_NOFOLLOW_ERRNO:
868 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
869 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
870 free(ad->ad_data_fork.adf_syml);
873 ad->ad_data_fork.adf_syml[lsz] = 0;
874 ad->ad_data_fork.adf_fd = AD_SYMLINK;
882 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
884 ad->ad_data_fork.adf_flags = oflags;
885 adf_lock_init(&ad->ad_data_fork);
886 ad->ad_data_fork.adf_refcount++;
889 LOG(log_debug, logtype_ad,
890 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
891 fullpathname(path), adflags2logstr(adflags), ret,
892 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
893 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
894 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
898 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
903 struct stat *pst = NULL;
905 int oflags, nocreatflags, opened = 0;
909 LOG(log_debug, logtype_ad,
910 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
911 fullpathname(path), adflags2logstr(adflags),
912 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
913 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
914 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
916 if (ad_meta_fileno(ad) != -1) {
917 /* the file is already open, but we want write access: */
918 if ((adflags & ADFLAGS_RDWR) &&
919 /* and it was already denied: */
920 (ad->ad_mdp->adf_flags & O_RDONLY)) {
924 ad_refresh(path, ad);
925 /* it's not new anymore */
926 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
927 ad->ad_mdp->adf_refcount++;
931 ad_p = ad->ad_ops->ad_path(path, adflags);
932 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_HF, adflags);
933 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
934 fullpathname(path), openflags2logstr(oflags));
935 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
937 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
939 if (ad_meta_fileno(ad) != -1) {
940 ad->ad_mdp->adf_flags = nocreatflags;
946 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
947 nocreatflags &= ~O_RDWR;
948 nocreatflags |= O_RDONLY;
949 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
950 ad->ad_mdp->adf_flags = nocreatflags;
955 if (!(oflags & O_CREAT))
958 * We're expecting to create a new adouble header file here
960 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
964 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
965 if ((ad->ad_options & ADVOL_UNIXPRIV))
967 admode = ad_hf_mode(admode);
968 if (errno == ENOENT) {
969 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
971 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
972 if ((ad->ad_options & ADVOL_UNIXPRIV))
974 admode = ad_hf_mode(admode);
977 /* retry with O_CREAT */
978 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
979 ad->ad_mdp->adf_flags = oflags;
980 /* just created, set owner if admin owner (root) */
982 ad_chown(ad_p, &st_dir);
989 /* Now we've got a new opened fd, we need to check that in the error case */
992 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
993 /* check for 0 length files, treat them as new. */
994 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
995 if (st_meta.st_size == 0)
996 ad->ad_mdp->adf_flags |= O_TRUNC;
998 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1003 adf_lock_init(ad->ad_mdp);
1004 ad->ad_mdp->adf_refcount = 1;
1006 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1007 /* This is a new adouble header file, create it */
1008 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1011 /* Read the adouble header in and parse it.*/
1012 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1016 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1017 close(ad_meta_fileno(ad));
1018 ad_meta_fileno(ad) = -1;
1019 ad->ad_mdp->adf_refcount = 0;
1021 LOG(log_debug, logtype_ad,
1022 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1023 fullpathname(path), adflags2logstr(adflags), ret,
1024 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1025 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1026 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1030 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1037 LOG(log_debug, logtype_ad,
1038 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1039 fullpathname(path), adflags2logstr(adflags),
1040 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1041 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1042 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1044 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC));
1046 if (ad_meta_fileno(ad) == AD_SYMLINK)
1049 if (ad_meta_fileno(ad) != -1) {
1050 /* the file is already open, but we want write access: */
1051 if ((oflags & O_RDWR) &&
1052 /* and it was already denied: */
1053 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1054 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1055 fullpathname(path), strerror(errno));
1059 /* it's not new anymore */
1060 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1062 if (oflags & O_RDWR) {
1063 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1064 if (adflags & ADFLAGS_DIR)
1065 /* For directories we open the directory RDONYL so we can later fchdir() */
1066 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1067 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1068 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1070 ad->ad_mdp->adf_flags = oflags;
1074 /* Read the adouble header in and parse it.*/
1075 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1076 if (!(adflags & ADFLAGS_CREATE)) {
1077 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1082 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1084 /* It doesnt exist, EPERM or another error */
1085 if (!(errno == ENOATTR || errno == ENOENT)) {
1086 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1091 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1092 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1094 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1097 if (ad_meta_fileno(ad) != -1)
1098 ad->ad_mdp->adf_refcount++;
1099 (void)ad_reso_size(path, adflags, ad);
1102 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1103 close(ad_meta_fileno(ad));
1104 ad_meta_fileno(ad) = -1;
1105 ad->ad_mdp->adf_refcount = 0;
1107 LOG(log_debug, logtype_ad,
1108 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1109 fullpathname(path), adflags2logstr(adflags), ret,
1110 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1111 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1112 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1117 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1121 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1124 switch (ad->ad_vers) {
1126 ret = ad_open_hf_v2(path, adflags, mode, ad);
1129 ret = ad_open_hf_ea(path, adflags, mode, ad);
1137 ad->ad_meta_refcount++;
1139 ret = ad_error(ad, adflags);
1145 * Get resofork length for adouble:ea
1147 static int ad_reso_size(const char *path, int adflags, struct adouble *ad)
1152 if (adflags & ADFLAGS_DIR) {
1157 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1162 if (ad_reso_fileno(ad) != -1) {
1163 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1164 ad->ad_rlen = st.st_size;
1165 } else if (ad_meta_fileno(ad) != -1) {
1166 EC_NEG1( (ad->ad_rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1168 EC_NEG1( (ad->ad_rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1173 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags));
1174 EC_ZERO( lstat(rfpath, &st));
1175 if (st.st_size > ADEDOFF_RFORK_OSX)
1176 ad->ad_rlen = st.st_size - ADEDOFF_RFORK_OSX;
1181 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, ad->ad_rlen);
1189 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1194 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1195 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1198 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1200 if (!AD_META_OPEN(ad) && !(adflags & ADFLAGS_NORF))
1202 if (AD_META_OPEN(ad))
1203 ad->ad_reso_refcount++;
1206 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1210 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1215 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1222 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1224 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT);
1226 if (ad_reso_fileno(ad) != -1) {
1227 /* the file is already open, but we want write access: */
1228 if ((oflags & O_RDWR)
1229 /* and it was already denied: */
1230 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1234 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1235 ad->ad_rfp->adf_refcount++;
1236 EC_NEG1_LOG( ad_reso_size(path, adflags, ad));
1240 if (ad_meta_fileno(ad) < 0)
1242 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1243 if (!(adflags & ADFLAGS_CREATE)) {
1248 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1249 AD_EA_RESO, oflags, 0666) );
1252 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1253 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1254 if (!(adflags & ADFLAGS_CREATE))
1257 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1258 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1263 ad->ad_rfp->adf_refcount = 1;
1264 ad->ad_rfp->adf_flags = oflags;
1265 ad->ad_reso_refcount++;
1268 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1269 if (ad->ad_rfp->adf_flags & O_CREAT) {
1270 /* This is a new adouble header file, create it */
1271 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1273 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1274 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1278 /* Read the adouble header */
1279 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1281 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1285 (void)ad_reso_size(path, adflags, ad);
1289 if (opened && (ad_reso_fileno(ad) != -1)) {
1290 close(ad_reso_fileno(ad));
1291 ad_reso_fileno(ad) = -1;
1292 ad->ad_reso_refcount--;
1293 ad->ad_rfp->adf_refcount = 0;
1295 if (adflags & ADFLAGS_NORF) {
1299 (void)ad_close(ad, closeflags);
1305 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1311 * Open ressource fork
1313 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1317 switch (ad->ad_vers) {
1319 ret = ad_open_rf_v2(path, adflags, mode, ad);
1322 ret = ad_open_rf_ea(path, adflags, mode, ad);
1332 /***********************************************************************************
1334 ********************************************************************************* */
1336 off_t ad_getentryoff(const struct adouble *ad, int eid)
1338 if (ad->ad_vers == AD_VERSION2)
1339 return ad->ad_eid[eid].ade_off;
1348 return ADEDOFF_RFORK_OSX;
1351 return ad->ad_eid[eid].ade_off;
1354 AFP_PANIC("What am I doing here?");
1357 const char *ad_path_ea( const char *path, int adflags _U_)
1362 const char *ad_path_osx(const char *path, int adflags _U_)
1364 static char pathbuf[ MAXPATHLEN + 1];
1365 char c, *slash, buf[MAXPATHLEN + 1];
1367 if (!strcmp(path,".")) {
1369 getcwd(buf, MAXPATHLEN);
1372 strlcpy(buf, path, MAXPATHLEN +1);
1374 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1377 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1380 pathbuf[ 0 ] = '\0';
1383 strlcat( pathbuf, "._", MAXPATHLEN +1);
1384 strlcat( pathbuf, slash, MAXPATHLEN +1);
1389 * Put the .AppleDouble where it needs to be:
1391 * / a/.AppleDouble/b
1393 * \ b/.AppleDouble/.Parent
1395 * FIXME: should do something for pathname > MAXPATHLEN
1397 const char *ad_path( const char *path, int adflags)
1399 static char pathbuf[ MAXPATHLEN + 1];
1403 if ( adflags & ADFLAGS_DIR ) {
1404 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1406 if ( l && l < MAXPATHLEN) {
1409 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1411 if (NULL != ( slash = strrchr( path, '/' )) ) {
1414 /* XXX we must return NULL here and test in the caller */
1417 memcpy( pathbuf, path, l);
1422 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1423 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1429 /* -------------------------
1430 * Support inherited protection modes for AppleDouble files. The supplied
1431 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1432 * and that value is returned.
1434 char *ad_dir(const char *path)
1436 static char modebuf[ MAXPATHLEN + 1];
1439 * For a path with directories in it, remove the final component
1440 * (path or subdirectory name) to get the name we want to stat.
1441 * For a path which is just a filename, use "." instead.
1443 slash = strrchr( path, '/' );
1448 if (len >= MAXPATHLEN) {
1449 errno = ENAMETOOLONG;
1450 return NULL; /* can't do it */
1452 memcpy( modebuf, path, len );
1453 modebuf[len] = '\0';
1454 /* is last char a '/' ? */
1455 if (slash[1] == 0) {
1456 slash = modebuf+ len;
1458 while (modebuf < slash && slash[-1] == '/') {
1461 if (modebuf == slash) {
1465 while (modebuf < slash && *slash != '/') {
1468 if (modebuf == slash) {
1471 *slash = '\0'; /* remove pathname component */
1476 modebuf[0] = '.'; /* use current directory */
1481 int ad_setfuid(const uid_t id)
1487 /* ---------------- */
1488 uid_t ad_getfuid(void)
1494 stat path parent directory
1496 int ad_stat(const char *path, struct stat *stbuf)
1503 return lstat( p, stbuf );
1507 return access right of path parent directory
1509 int ad_mode( const char *path, mode_t mode)
1512 ad_mode_st(path, &mode, &stbuf);
1517 * Use mkdir() with mode bits taken from ad_mode().
1519 int ad_mkdir( const char *path, mode_t mode)
1525 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1526 path, mode, getcwdpath());
1528 st_invalid = ad_mode_st(path, &mode, &stbuf);
1529 ret = mkdir( path, mode );
1530 if (ret || st_invalid)
1532 ad_chown(path, &stbuf);
1537 static void ad_init_func(struct adouble *ad)
1539 switch (ad->ad_vers) {
1541 ad->ad_ops = &ad_adouble;
1542 ad->ad_rfp = &ad->ad_resource_fork;
1543 ad->ad_mdp = &ad->ad_resource_fork;
1546 ad->ad_ops = &ad_adouble_ea;
1547 ad->ad_rfp = &ad->ad_resource_fork;
1548 ad->ad_mdp = &ad->ad_data_fork;
1551 AFP_PANIC("ad_init: unknown AD version");
1555 ad_data_fileno(ad) = -1;
1556 ad_reso_fileno(ad) = -1;
1557 ad_meta_fileno(ad) = -1;
1558 ad->ad_refcount = 1;
1562 void ad_init_old(struct adouble *ad, int flags, int options)
1564 memset(ad, 0, sizeof(struct adouble));
1565 ad->ad_vers = flags;
1566 ad->ad_options = options;
1570 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1572 memset(ad, 0, sizeof(struct adouble));
1573 ad->ad_vers = vol->v_adouble;
1574 ad->ad_options = vol->v_ad_options;
1579 * Open data-, metadata(header)- or ressource fork
1581 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1582 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1584 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1587 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1590 * Open a files data fork, metadata fork or ressource fork.
1592 * @param ad (rw) pointer to struct adouble
1593 * @param path (r) Path to file or directory
1594 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1595 * ADFLAGS_DF: open data fork
1596 * ADFLAGS_RF: open ressource fork
1597 * ADFLAGS_HF: open header (metadata) file
1598 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1599 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1600 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1602 * Access mode for the forks:
1603 * ADFLAGS_RDONLY: open read only
1604 * ADFLAGS_RDWR: open read write
1607 * ADFLAGS_CREATE: create if not existing
1608 * ADFLAGS_TRUNC: truncate
1611 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1612 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1613 * This basically results in the files being opened RW instead of RDONLY.
1614 * @param mode (r) mode used with O_CREATE
1616 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1617 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1618 * fds of the same file
1620 * @returns 0 on success, any other value indicates an error
1622 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1628 LOG(log_debug, logtype_ad,
1629 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1630 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1631 fullpathname(path), adflags2logstr(adflags),
1632 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1633 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1634 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1635 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1637 if (adflags & ADFLAGS_CHECK_OF)
1638 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1639 adflags |= ADFLAGS_SETSHRMD;
1641 if (adflags & ADFLAGS_SETSHRMD)
1642 /* sharemode locks are stored in the data fork */
1643 adflags |= ADFLAGS_DF;
1645 if (ad->ad_vers == AD_VERSION2) {
1646 if (adflags & ADFLAGS_RF)
1647 adflags |= ADFLAGS_HF;
1648 if (adflags & ADFLAGS_NORF)
1649 adflags |= ADFLAGS_NOHF;
1652 if (ad->ad_inited != AD_INITED) {
1653 ad->ad_adflags = adflags;
1654 ad->ad_inited = AD_INITED;
1656 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1657 if (ad->ad_resource_fork.adf_refcount > 0)
1658 ad->ad_open_forks |= ATTRBIT_ROPEN;
1661 va_start(args, adflags);
1662 if (adflags & ADFLAGS_CREATE)
1663 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1666 if (adflags & ADFLAGS_DF) {
1667 ad->ad_data_refcount++;
1668 if (ad_open_df(path, adflags, mode, ad) != 0) {
1669 ad->ad_data_refcount--;
1674 if (adflags & ADFLAGS_HF) {
1675 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1680 if (adflags & ADFLAGS_RF) {
1681 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1686 if (adflags & ADFLAGS_CHECK_OF) {
1687 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1691 LOG(log_debug, logtype_ad,
1692 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1693 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1694 fullpathname(path), ret,
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);
1704 * @brief open metadata, possibly as root
1706 * Return only metadata but try very hard ie at first try as user, then try as root.
1708 * @param name name of file/dir
1709 * @param flags ADFLAGS_DIR: name is a directory \n
1710 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1712 * @param adp pointer to struct adouble
1714 int ad_metadata(const char *name, int flags, struct adouble *adp)
1716 int ret, err, oflags;
1718 /* Sanitize flags */
1719 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1721 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1723 ret = ad_open(adp, name, oflags);
1733 * @brief openat like wrapper for ad_metadata
1735 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1741 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1747 if (ad_metadata(name, flags, adp) < 0) {
1754 if (fchdir(cwdfd) != 0) {
1755 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1768 int ad_refresh(const char *path, struct adouble *ad)
1770 switch (ad->ad_vers) {
1772 if (ad_meta_fileno(ad) == -1)
1774 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1778 if (AD_META_OPEN(ad)) {
1779 if (ad_data_fileno(ad) == -1)
1781 // TODO: read meta EA
1784 if (AD_RSRC_OPEN(ad)) {
1785 if (ad_reso_fileno(ad) == -1)
1788 if (fstat(ad_reso_fileno(ad), &st) == -1)
1790 ad->ad_rlen = st.st_size;
1793 if (AD_META_OPEN(ad)) {
1794 if (ad_data_fileno(ad) == -1)
1796 // TODO: read meta EA
1798 if (AD_RSRC_OPEN(ad)) {
1799 if (ad_reso_fileno(ad) == -1)
1801 if (ad_header_read_osx(path, ad, NULL) < 0)
1805 return ad->ad_ops->ad_header_read(path, ad, NULL);
1814 int ad_openat(struct adouble *ad,
1815 int dirfd, /* dir fd openat like */
1825 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1829 va_start(args, adflags);
1830 if (adflags & ADFLAGS_CREATE)
1831 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1834 EC_NEG1( ad_open(ad, path, adflags, mode) );
1837 if (fchdir(cwdfd) != 0) {
1838 AFP_PANIC("ad_openat: cant chdir back");
1849 /* build a resource fork mode from the data fork mode:
1850 * remove X mode and extend header to RW if R or W (W if R for locking),
1852 mode_t ad_hf_mode(mode_t mode)
1854 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1855 /* fnctl lock need write access */
1856 if ((mode & S_IRUSR))
1858 if ((mode & S_IRGRP))
1860 if ((mode & S_IROTH))
1863 /* if write mode set add read mode */
1864 if ((mode & S_IWUSR))
1866 if ((mode & S_IWGRP))
1868 if ((mode & S_IWOTH))