2 * Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
3 * Copyright (c) 1990,1991 Regents of The University of Michigan.
4 * Copyright (c) 2010 Frank Lahm
8 * Permission to use, copy, modify, and distribute this software and
9 * its documentation for any purpose and without fee is hereby granted,
10 * provided that the above copyright notice appears in all copies and
11 * that both that copyright notice and this permission notice appear
12 * in supporting documentation, and that the name of The University
13 * of Michigan not be used in advertising or publicity pertaining to
14 * distribution of the software without specific, written prior
15 * permission. This software is supplied as is without expressed or
16 * implied warranties of any kind.
18 * Research Systems Unix Group
19 * The University of Michigan
21 * 535 W. William Street
24 * netatalk@itd.umich.edu
30 * Part of Netatalk's AppleDouble implementatation
31 * @sa include/atalk/adouble.h
36 #endif /* HAVE_CONFIG_H */
39 #include <sys/param.h>
43 #include <arpa/inet.h>
45 #include <atalk/logger.h>
46 #include <atalk/adouble.h>
47 #include <atalk/util.h>
48 #include <atalk/unix.h>
50 #include <atalk/bstrlib.h>
51 #include <atalk/bstradd.h>
52 #include <atalk/compat.h>
53 #include <atalk/errchk.h>
54 #include <atalk/volume.h>
58 #define ADEDOFF_MAGIC (0)
59 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
60 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
61 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
63 /* initial lengths of some of the fields */
64 #define ADEDLEN_INIT 0
66 /* i stick things in a slightly different order than their eid order in
67 * case i ever want to separate RootInfo behaviour from the rest of the
71 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
72 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
73 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
74 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
75 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
76 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
77 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
78 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
79 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
80 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
81 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
82 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
83 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
86 #define ADEDOFF_FINDERI_EA (AD_HEADER_LEN + ADEID_NUM_EA * AD_ENTRY_LEN)
87 #define ADEDOFF_COMMENT_EA (ADEDOFF_FINDERI_EA + ADEDLEN_FINDERI)
88 #define ADEDOFF_FILEDATESI_EA (ADEDOFF_COMMENT_EA + ADEDLEN_COMMENT)
89 #define ADEDOFF_AFPFILEI_EA (ADEDOFF_FILEDATESI_EA + ADEDLEN_FILEDATESI)
90 #define ADEDOFF_PRIVDEV_EA (ADEDOFF_AFPFILEI_EA + ADEDLEN_AFPFILEI)
91 #define ADEDOFF_PRIVINO_EA (ADEDOFF_PRIVDEV_EA + ADEDLEN_PRIVDEV)
92 #define ADEDOFF_PRIVSYN_EA (ADEDOFF_PRIVINO_EA + ADEDLEN_PRIVINO)
93 #define ADEDOFF_PRIVID_EA (ADEDOFF_PRIVSYN_EA + ADEDLEN_PRIVSYN)
95 /* this is to prevent changing timezones from causing problems with
96 localtime volumes. the screw-up is 30 years. we use a delta of 5 years */
97 #define TIMEWARP_DELTA 157680000
100 uint32_t id, offset, len;
103 /* --------------------------- */
104 static uid_t default_uid = -1;
106 /* Forward declarations */
107 static int ad_mkrf(const char *path);
108 static int ad_header_read(const char *path, struct adouble *ad, const struct stat *hst);
109 static int ad_header_upgrade(struct adouble *ad, const char *name);
112 static int ad_mkrf_ea(const char *path);
114 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst);
115 static int ad_header_upgrade_ea(struct adouble *ad, const char *name);
116 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad);
117 static int ad_mkrf_osx(const char *path);
120 static struct adouble_fops ad_adouble = {
123 &ad_rebuild_adouble_header_v2,
128 static struct adouble_fops ad_adouble_ea = {
136 &ad_rebuild_adouble_header_ea,
138 &ad_header_upgrade_ea,
141 static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
142 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
143 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
144 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
145 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
146 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
147 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
148 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
149 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
150 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
151 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
152 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
153 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
154 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
158 /* Using Extended Attributes */
159 static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
160 {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
161 {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
162 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
163 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
164 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV_EA, ADEDLEN_INIT},
165 {ADEID_PRIVINO, ADEDOFF_PRIVINO_EA, ADEDLEN_INIT},
166 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN_EA, ADEDLEN_INIT},
167 {ADEID_PRIVID, ADEDOFF_PRIVID_EA, ADEDLEN_INIT},
171 #define ADFLAGS2LOGSTRBUFSIZ 128
172 const char *adflags2logstr(int adflags)
175 static char buf[ADFLAGS2LOGSTRBUFSIZ];
179 if (adflags & ADFLAGS_DF) {
180 strlcat(buf, "DF", ADFLAGS2LOGSTRBUFSIZ);
183 if (adflags & ADFLAGS_RF) {
185 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
186 strlcat(buf, "RF", ADFLAGS2LOGSTRBUFSIZ);
189 if (adflags & ADFLAGS_NORF) {
191 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
192 strlcat(buf, "NORF", ADFLAGS2LOGSTRBUFSIZ);
195 if (adflags & ADFLAGS_HF) {
197 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
198 strlcat(buf, "HF", ADFLAGS2LOGSTRBUFSIZ);
201 if (adflags & ADFLAGS_NOHF) {
203 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
204 strlcat(buf, "NOHF", ADFLAGS2LOGSTRBUFSIZ);
207 if (adflags & ADFLAGS_DIR) {
209 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
210 strlcat(buf, "DIR", ADFLAGS2LOGSTRBUFSIZ);
213 if (adflags & ADFLAGS_CHECK_OF) {
215 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
216 strlcat(buf, "OF", ADFLAGS2LOGSTRBUFSIZ);
219 if (adflags & ADFLAGS_SETSHRMD) {
221 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
222 strlcat(buf, "SHRMD", ADFLAGS2LOGSTRBUFSIZ);
225 if (adflags & ADFLAGS_RDWR) {
227 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
228 strlcat(buf, "O_RDWR", ADFLAGS2LOGSTRBUFSIZ);
231 if (adflags & ADFLAGS_RDONLY) {
233 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
234 strlcat(buf, "O_RDONLY", ADFLAGS2LOGSTRBUFSIZ);
237 if (adflags & ADFLAGS_CREATE) {
239 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
240 strlcat(buf, "O_CREAT", ADFLAGS2LOGSTRBUFSIZ);
243 if (adflags & ADFLAGS_EXCL) {
245 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
246 strlcat(buf, "O_EXCL", ADFLAGS2LOGSTRBUFSIZ);
249 if (adflags & ADFLAGS_TRUNC) {
251 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
252 strlcat(buf, "O_TRUNC", ADFLAGS2LOGSTRBUFSIZ);
259 #define OPENFLAGS2LOGSTRBUFSIZ 128
260 const char *openflags2logstr(int oflags)
263 static char buf[OPENFLAGS2LOGSTRBUFSIZ];
267 if ((oflags & O_RDONLY) || (oflags == O_RDONLY)) {
268 strlcat(buf, "O_RDONLY", OPENFLAGS2LOGSTRBUFSIZ);
271 if (oflags & O_RDWR) {
273 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
274 strlcat(buf, "O_RDWR", OPENFLAGS2LOGSTRBUFSIZ);
277 if (oflags & O_CREAT) {
279 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
280 strlcat(buf, "O_CREAT", OPENFLAGS2LOGSTRBUFSIZ);
283 if (oflags & O_TRUNC) {
285 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
286 strlcat(buf, "O_TRUNC", OPENFLAGS2LOGSTRBUFSIZ);
289 if (oflags & O_EXCL) {
291 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
292 strlcat(buf, "O_EXCL", OPENFLAGS2LOGSTRBUFSIZ);
298 static uint32_t get_eid(uint32_t eid)
303 return ADEID_PRIVDEV;
305 return ADEID_PRIVINO;
307 return ADEID_PRIVSYN;
314 /* ----------------------------------- */
315 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
317 const struct entry *eid;
321 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\")", path);
323 if (ad->ad_magic == AD_MAGIC) {
324 LOG(log_debug, logtype_ad, "new_ad_header(\"%s\"): already initialized", path);
328 ad->ad_magic = AD_MAGIC;
329 ad->ad_version = ad->ad_vers & 0x0f0000;
330 if (!ad->ad_version) {
331 ad->ad_version = AD_VERSION;
334 memset(ad->ad_data, 0, sizeof(ad->ad_data));
336 if (ad->ad_vers == AD_VERSION2)
338 else if (ad->ad_vers == AD_VERSION_EA)
339 eid = entry_order_ea;
344 ad->ad_eid[eid->id].ade_off = eid->offset;
345 ad->ad_eid[eid->id].ade_len = eid->len;
349 /* put something sane in the directory finderinfo */
352 if (lstat(path, &st) != 0)
356 if ((adflags & ADFLAGS_DIR)) {
357 /* set default view */
358 ashort = htons(FINDERINFO_CLOSEDVIEW);
359 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
361 /* set default creator/type fields */
362 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
363 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
366 /* make things invisible */
367 if ((ad->ad_options & ADVOL_INVDOTS)
369 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
371 ashort = htons(ATTRBIT_INVISIBLE);
372 ad_setattr(ad, ashort);
373 ashort = htons(FINDERINFO_INVISIBLE);
374 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
377 /* put something sane in the date fields */
378 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
379 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
380 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
381 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
386 /* -------------------------------------
389 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
391 uint32_t eid, len, off;
394 /* now, read in the entry bits */
395 for (; nentries > 0; nentries-- ) {
396 memcpy(&eid, buf, sizeof( eid ));
397 eid = get_eid(ntohl(eid));
398 buf += sizeof( eid );
399 memcpy(&off, buf, sizeof( off ));
401 buf += sizeof( off );
402 memcpy(&len, buf, sizeof( len ));
404 buf += sizeof( len );
408 && off < sizeof(ad->ad_data)
409 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
410 ad->ad_eid[ eid ].ade_off = off;
411 ad->ad_eid[ eid ].ade_len = len;
412 } else if (!warning) {
414 LOG(log_warning, logtype_ad, "parse_entries: bogus eid: %d", eid);
419 /* this reads enough of the header so that we can figure out all of
420 * the entry lengths and offsets. once that's done, we just read/mmap
421 * the rest of the header in.
423 * NOTE: we're assuming that the resource fork is kept at the end of
424 * the file. also, mmapping won't work for the hfs fs until it
425 * understands how to mmap header files. */
426 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
428 char *buf = ad->ad_data;
434 /* read the header */
435 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
438 if (header_len < AD_HEADER_LEN) {
443 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
444 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
445 ad->ad_magic = ntohl( ad->ad_magic );
446 ad->ad_version = ntohl( ad->ad_version );
448 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
449 LOG(log_error, logtype_ad, "ad_open: can't parse AppleDouble header.");
454 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
455 nentries = ntohs( nentries );
457 /* read in all the entry headers. if we have more than the
458 * maximum, just hope that the rfork is specified early on. */
459 len = nentries*AD_ENTRY_LEN;
461 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
462 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
464 buf += AD_HEADER_LEN;
465 if (len > header_len - AD_HEADER_LEN) {
466 LOG(log_error, logtype_ad, "ad_header_read: can't read entry info.");
471 /* figure out all of the entry offsets and lengths. if we aren't
472 * able to read a resource fork entry, bail. */
473 nentries = len / AD_ENTRY_LEN;
474 parse_entries(ad, buf, nentries);
475 if (!ad_getentryoff(ad, ADEID_RFORK)
476 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
478 LOG(log_error, logtype_ad, "ad_header_read: problem with rfork entry offset.");
483 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
484 LOG(log_error, logtype_ad, "ad_header_read: can't read in entries.");
491 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
492 return 1; /* fail silently */
496 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
501 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
502 int ad_valid_header_osx(const char *path)
506 struct adouble adosx;
507 char *buf = &adosx.ad_data[0];
510 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
512 EC_NEG1( fd = open(path, O_RDONLY) );
514 /* read the header */
515 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
517 if (header_len < AD_HEADER_LEN)
520 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
521 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
522 adosx.ad_magic = ntohl(adosx.ad_magic);
523 adosx.ad_version = ntohl(adosx.ad_version);
525 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
526 LOG(log_warning, logtype_ad, "ad_valid_header_osx(\"%s\"): not an adouble:osx file", fullpathname(path));
530 if (strncmp(buf + ADEDOFF_FILLER, "Mac OS X", strlen("Mac OS X")) == 0)
532 * It's a split fork created by OS X, it's not our "own" ._ file
533 * and thus not a valid header in this context.
534 * We allow enumeration and access.
539 LOG(log_debug, logtype_ad, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
547 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
548 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
551 struct adouble adosx;
552 char *buf = &adosx.ad_data[0];
558 memset(buf, 0, sizeof(adosx.ad_data));
560 /* read the header */
561 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
563 if (header_len < AD_HEADER_LEN) {
568 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
569 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
570 adosx.ad_magic = ntohl(adosx.ad_magic);
571 adosx.ad_version = ntohl(adosx.ad_version);
573 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
574 LOG(log_error, logtype_ad, "ad_header_read_osx: can't parse AppleDouble header");
579 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
580 nentries = ntohs(nentries);
581 len = nentries * AD_ENTRY_LEN;
583 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
584 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
586 buf += AD_HEADER_LEN;
587 if (len > header_len - AD_HEADER_LEN) {
588 LOG(log_error, logtype_ad, "ad_header_read_osx: can't read entry info.");
593 nentries = len / AD_ENTRY_LEN;
594 parse_entries(&adosx, buf, nentries);
596 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
597 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
598 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
600 LOG(log_error, logtype_ad, "ad_header_read_osx: problem with rfork entry offset.");
607 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
610 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
611 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
617 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
622 char *buf = ad->ad_data;
624 if (ad_meta_fileno(ad) != -1)
625 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
627 header_len = sys_lgetxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
628 if (header_len < 1) {
629 LOG(log_debug, logtype_ad, "ad_header_read_ea: %s", strerror(errno));
633 if (header_len < AD_HEADER_LEN) {
634 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): bogus AppleDouble header.", fullpathname(path));
639 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
640 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
642 ad->ad_magic = ntohl( ad->ad_magic );
643 ad->ad_version = ntohl( ad->ad_version );
645 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
646 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): wrong magic or version", fullpathname(path));
651 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
652 nentries = ntohs( nentries );
654 /* Protect against bogus nentries */
655 len = nentries * AD_ENTRY_LEN;
656 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
657 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
658 if (len > header_len - AD_HEADER_LEN) {
659 LOG(log_error, logtype_ad, "ad_header_read_ea(\"%s\"): can't read entry info.", fullpathname(path));
663 nentries = len / AD_ENTRY_LEN;
665 /* Now parse entries */
666 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
672 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
675 * path: "/path/.AppleDouble/file"
676 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
678 static int ad_mkrf(const char *path)
682 * Probably .AppleDouble doesn't exist, try to mkdir it.
684 if (NULL == ( slash = strrchr( path, '/' )) ) {
689 if ( ad_mkdir( path, 0777 ) < 0 ) {
697 static int ad_mkrf_ea(const char *path _U_)
699 AFP_PANIC("ad_mkrf_ea: dont use");
704 static int ad_mkrf_osx(const char *path _U_)
710 if we are root change path user/ group
711 It can be a native function for BSD cf. FAQ.Q10
712 path: pathname to chown
713 stbuf: parent directory inode
715 use fstat and fchown or lchown with linux?
717 #define EMULATE_SUIDDIR
719 static int ad_chown(const char *path, struct stat *stbuf)
722 #ifdef EMULATE_SUIDDIR
725 if (default_uid != (uid_t)-1) {
726 /* we are root (admin) */
727 id = (default_uid)?default_uid:stbuf->st_uid;
728 ret = lchown( path, id, stbuf->st_gid );
734 #define DEFMASK 07700 /* be conservative */
737 return access right and inode of path parent directory
739 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
744 if (ad_stat(path, stbuf) != 0) {
748 *mode &= stbuf->st_mode;
752 /* --------------------------- */
753 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
758 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
760 AFP_PANIC("ad_header_upgrade_ea: dont use");
765 * Error handling for adouble header(=metadata) file open error
767 * We're called because opening ADFLAGS_HF caused an error.
768 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
769 * 2. Open non-existent ressource fork, this will just result in first read return EOF
770 * 3. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
771 * ought to close it before returning with an error condition.
773 static int ad_error(struct adouble *ad, int adflags)
776 if (adflags & ADFLAGS_NOHF) { /* 1 */
779 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_RF) && (errno == ENOENT)) /* 2 */
781 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 3 */
782 ad_close( ad, ADFLAGS_DF );
789 * Map ADFLAGS to open() flags
791 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
792 * @param adflags (r) flags from ad_open(..., adflags, ...)
793 * @returns mapped flags suitable for calling open()
795 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
799 if (adflags & ADFLAGS_RDWR)
801 if (adflags & ADFLAGS_RDONLY) {
802 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
803 /* need rw access for locks */
804 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
805 /* need rw access for adouble file for the case:
806 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
811 if (adflags & ADFLAGS_CREATE)
813 if (adflags & ADFLAGS_EXCL)
815 if (adflags & ADFLAGS_TRUNC)
818 if (!(ad->ad_options & ADVOL_FOLLO_SYML))
819 oflags |= O_NOFOLLOW;
824 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
833 LOG(log_debug, logtype_ad,
834 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
835 fullpathname(path), adflags2logstr(adflags),
836 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
837 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
838 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
840 if (ad_data_fileno(ad) != -1) {
841 /* the file is already open, but we want write access: */
842 if ((adflags & ADFLAGS_RDWR)
843 /* and it was denied the first time: */
844 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
848 /* it's not new anymore */
849 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
850 ad->ad_data_fork.adf_refcount++;
854 oflags = ad2openflags(ad, ADFLAGS_DF, adflags);
857 if ((adflags & ADFLAGS_CREATE)) {
858 st_invalid = ad_mode_st(path, &admode, &st_dir);
859 if ((ad->ad_options & ADVOL_UNIXPRIV))
863 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
865 if (ad->ad_data_fork.adf_fd == -1) {
870 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
873 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
877 case OPEN_NOFOLLOW_ERRNO:
878 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
879 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
880 free(ad->ad_data_fork.adf_syml);
883 ad->ad_data_fork.adf_syml[lsz] = 0;
884 ad->ad_data_fork.adf_fd = AD_SYMLINK;
892 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
894 ad->ad_data_fork.adf_flags = oflags;
895 adf_lock_init(&ad->ad_data_fork);
896 ad->ad_data_fork.adf_refcount++;
899 LOG(log_debug, logtype_ad,
900 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
901 fullpathname(path), adflags2logstr(adflags), ret,
902 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
903 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
904 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
908 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
913 struct stat *pst = NULL;
915 int oflags, nocreatflags, opened = 0;
919 LOG(log_debug, logtype_ad,
920 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
921 fullpathname(path), adflags2logstr(adflags),
922 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
923 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
924 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
926 if (ad_meta_fileno(ad) != -1) {
927 /* the file is already open, but we want write access: */
928 if ((adflags & ADFLAGS_RDWR) &&
929 /* and it was already denied: */
930 (ad->ad_mdp->adf_flags & O_RDONLY)) {
934 ad_refresh(path, ad);
935 /* it's not new anymore */
936 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
937 ad->ad_mdp->adf_refcount++;
941 ad_p = ad->ad_ops->ad_path(path, adflags);
942 oflags = ad2openflags(ad, ADFLAGS_HF, adflags);
943 LOG(log_debug, logtype_ad,"ad_open_hf_v2(\"%s\"): open flags: %s",
944 fullpathname(path), openflags2logstr(oflags));
945 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
947 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
949 if (ad_meta_fileno(ad) != -1) {
950 ad->ad_mdp->adf_flags = nocreatflags;
956 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
957 nocreatflags &= ~O_RDWR;
958 nocreatflags |= O_RDONLY;
959 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
960 ad->ad_mdp->adf_flags = nocreatflags;
965 if (!(oflags & O_CREAT))
968 * We're expecting to create a new adouble header file here
970 LOG(log_debug, logtype_ad, "ad_open(\"%s\"): creating adouble file",
974 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
975 if ((ad->ad_options & ADVOL_UNIXPRIV))
977 admode = ad_hf_mode(admode);
978 if (errno == ENOENT) {
979 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
981 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
982 if ((ad->ad_options & ADVOL_UNIXPRIV))
984 admode = ad_hf_mode(admode);
987 /* retry with O_CREAT */
988 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
989 ad->ad_mdp->adf_flags = oflags;
990 /* just created, set owner if admin owner (root) */
992 ad_chown(ad_p, &st_dir);
999 /* Now we've got a new opened fd, we need to check that in the error case */
1002 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1003 /* check for 0 length files, treat them as new. */
1004 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1005 if (st_meta.st_size == 0)
1006 ad->ad_mdp->adf_flags |= O_TRUNC;
1008 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1013 adf_lock_init(ad->ad_mdp);
1014 ad->ad_mdp->adf_refcount = 1;
1016 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1017 /* This is a new adouble header file, create it */
1018 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1021 /* Read the adouble header in and parse it.*/
1022 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1026 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1027 close(ad_meta_fileno(ad));
1028 ad_meta_fileno(ad) = -1;
1029 ad->ad_mdp->adf_refcount = 0;
1031 LOG(log_debug, logtype_ad,
1032 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1033 fullpathname(path), adflags2logstr(adflags), ret,
1034 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1035 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1036 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1040 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1046 LOG(log_debug, logtype_ad,
1047 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1048 fullpathname(path), adflags2logstr(adflags),
1049 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1050 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1051 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1053 oflags = ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC);
1055 if (ad_meta_fileno(ad) == AD_SYMLINK)
1058 if (ad_meta_fileno(ad) != -1) {
1059 /* the file is already open, but we want write access: */
1060 if ((oflags & O_RDWR) &&
1061 /* and it was already denied: */
1062 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1063 LOG(log_error, logtype_ad, "ad_open_hf_ea(%s): rw request for ro file: %s",
1064 fullpathname(path), strerror(errno));
1068 /* it's not new anymore */
1069 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1071 if (oflags & O_RDWR) {
1072 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1073 if (adflags & ADFLAGS_DIR)
1074 /* For directories we open the directory RDONYL so we can later fchdir() */
1075 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1076 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1077 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1079 ad->ad_mdp->adf_flags = oflags;
1083 /* Read the adouble header in and parse it.*/
1084 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1085 if (!(adflags & ADFLAGS_CREATE)) {
1086 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1091 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1093 /* It doesnt exist, EPERM or another error */
1094 if (!(errno == ENOATTR || errno == ENOENT)) {
1095 LOG(log_error, logtype_ad, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1100 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1101 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1103 LOG(log_debug, logtype_ad, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1106 if (ad_meta_fileno(ad) != -1)
1107 ad->ad_mdp->adf_refcount++;
1108 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1111 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1112 close(ad_meta_fileno(ad));
1113 ad_meta_fileno(ad) = -1;
1114 ad->ad_mdp->adf_refcount = 0;
1116 LOG(log_debug, logtype_ad,
1117 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1118 fullpathname(path), adflags2logstr(adflags), ret,
1119 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1120 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1121 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1126 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1130 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1132 switch (ad->ad_vers) {
1134 ret = ad_open_hf_v2(path, adflags, mode, ad);
1137 ret = ad_open_hf_ea(path, adflags, mode, ad);
1145 ad->ad_meta_refcount++;
1147 ret = ad_error(ad, adflags);
1153 * Get resofork length for adouble:ea, parameter 'ad' may be NULL
1155 off_t ad_reso_size(const char *path, int adflags, struct adouble *ad)
1161 if (adflags & ADFLAGS_DIR)
1164 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): BEGIN", path);
1169 if (ad && ad_reso_fileno(ad) != -1) {
1170 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1172 } else if (ad && ad_meta_fileno(ad) != -1) {
1173 EC_NEG1( (rlen = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0)) );
1175 EC_NEG1( (rlen = sys_lgetxattr(path, AD_EA_RESO, NULL, 0)) );
1180 EC_NULL_LOG( rfpath = ad_path_osx(path, adflags));
1181 EC_ZERO( lstat(rfpath, &st));
1182 if (st.st_size > ADEDOFF_RFORK_OSX)
1183 rlen = st.st_size - ADEDOFF_RFORK_OSX;
1188 LOG(log_debug, logtype_ad, "ad_reso_size(\"%s\"): size: %zd", path, rlen);
1196 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1201 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1202 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1205 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): BEGIN", fullpathname(path));
1207 if (!AD_META_OPEN(ad) && !(adflags & (ADFLAGS_NORF | ADFLAGS_RDONLY)))
1209 if (AD_META_OPEN(ad))
1210 ad->ad_reso_refcount++;
1213 LOG(log_debug, logtype_ad, "ad_open_rf_v2(\"%s\"): END: %d", fullpathname(path), ret);
1217 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1222 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1228 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1230 oflags = ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT;
1232 if (ad_reso_fileno(ad) != -1) {
1233 /* the file is already open, but we want write access: */
1234 if ((oflags & O_RDWR)
1235 /* and it was already denied: */
1236 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1240 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1241 ad->ad_rfp->adf_refcount++;
1242 EC_NEG1_LOG( ad->ad_rlen = ad_reso_size(path, adflags, ad));
1246 if (ad_meta_fileno(ad) < 0)
1248 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1249 if (!(adflags & ADFLAGS_CREATE)) {
1254 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1255 AD_EA_RESO, oflags, 0666) );
1258 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1259 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1260 if (!(adflags & ADFLAGS_CREATE)) {
1265 if (!(adflags & ADFLAGS_RDONLY)) {
1266 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1271 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1272 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1279 LOG(log_error, logtype_ad, "ad_open_rf_ea(\"%s\"): \"%s\"", fullpathname(rfpath), strerror(errno));
1284 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1285 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1291 ad->ad_rfp->adf_refcount = 1;
1292 ad->ad_rfp->adf_flags = oflags;
1293 ad->ad_reso_refcount++;
1296 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1297 if (ad->ad_rfp->adf_flags & O_CREAT) {
1298 /* This is a new adouble header file, create it */
1299 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1301 EC_NEG1_LOG( new_ad_header(ad, path, NULL, adflags) );
1302 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1306 /* Read the adouble header */
1307 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1309 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1313 ad->ad_rlen = ad_reso_size(path, adflags, ad);
1317 if (opened && (ad_reso_fileno(ad) != -1)) {
1318 close(ad_reso_fileno(ad));
1319 ad_reso_fileno(ad) = -1;
1320 ad->ad_reso_refcount--;
1321 ad->ad_rfp->adf_refcount = 0;
1323 if (adflags & ADFLAGS_NORF) {
1327 (void)ad_close(ad, closeflags);
1333 LOG(log_debug, logtype_ad, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1339 * Open ressource fork
1341 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1345 switch (ad->ad_vers) {
1347 ret = ad_open_rf_v2(path, adflags, mode, ad);
1350 ret = ad_open_rf_ea(path, adflags, mode, ad);
1360 /***********************************************************************************
1362 ********************************************************************************* */
1364 off_t ad_getentryoff(const struct adouble *ad, int eid)
1366 if (ad->ad_vers == AD_VERSION2)
1367 return ad->ad_eid[eid].ade_off;
1376 return ADEDOFF_RFORK_OSX;
1379 return ad->ad_eid[eid].ade_off;
1382 AFP_PANIC("What am I doing here?");
1385 const char *ad_path_ea( const char *path, int adflags _U_)
1390 const char *ad_path_osx(const char *path, int adflags _U_)
1392 static char pathbuf[ MAXPATHLEN + 1];
1393 char c, *slash, buf[MAXPATHLEN + 1];
1395 if (!strcmp(path,".")) {
1397 getcwd(buf, MAXPATHLEN);
1400 strlcpy(buf, path, MAXPATHLEN +1);
1402 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1405 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1408 pathbuf[ 0 ] = '\0';
1411 strlcat( pathbuf, "._", MAXPATHLEN +1);
1412 strlcat( pathbuf, slash, MAXPATHLEN +1);
1417 * Put the .AppleDouble where it needs to be:
1419 * / a/.AppleDouble/b
1421 * \ b/.AppleDouble/.Parent
1423 * FIXME: should do something for pathname > MAXPATHLEN
1425 const char *ad_path( const char *path, int adflags)
1427 static char pathbuf[ MAXPATHLEN + 1];
1431 if ( adflags & ADFLAGS_DIR ) {
1432 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1434 if ( l && l < MAXPATHLEN) {
1437 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1439 if (NULL != ( slash = strrchr( path, '/' )) ) {
1442 /* XXX we must return NULL here and test in the caller */
1445 memcpy( pathbuf, path, l);
1450 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1451 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1457 /* -------------------------
1458 * Support inherited protection modes for AppleDouble files. The supplied
1459 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1460 * and that value is returned.
1462 char *ad_dir(const char *path)
1464 static char modebuf[ MAXPATHLEN + 1];
1467 * For a path with directories in it, remove the final component
1468 * (path or subdirectory name) to get the name we want to stat.
1469 * For a path which is just a filename, use "." instead.
1471 slash = strrchr( path, '/' );
1476 if (len >= MAXPATHLEN) {
1477 errno = ENAMETOOLONG;
1478 return NULL; /* can't do it */
1480 memcpy( modebuf, path, len );
1481 modebuf[len] = '\0';
1482 /* is last char a '/' ? */
1483 if (slash[1] == 0) {
1484 slash = modebuf+ len;
1486 while (modebuf < slash && slash[-1] == '/') {
1489 if (modebuf == slash) {
1493 while (modebuf < slash && *slash != '/') {
1496 if (modebuf == slash) {
1499 *slash = '\0'; /* remove pathname component */
1504 modebuf[0] = '.'; /* use current directory */
1509 int ad_setfuid(const uid_t id)
1515 /* ---------------- */
1516 uid_t ad_getfuid(void)
1522 stat path parent directory
1524 int ad_stat(const char *path, struct stat *stbuf)
1531 return stat( p, stbuf );
1535 return access right of path parent directory
1537 int ad_mode( const char *path, mode_t mode)
1540 ad_mode_st(path, &mode, &stbuf);
1545 * Use mkdir() with mode bits taken from ad_mode().
1547 int ad_mkdir( const char *path, mode_t mode)
1553 LOG(log_debug, logtype_ad, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1554 path, mode, getcwdpath());
1556 st_invalid = ad_mode_st(path, &mode, &stbuf);
1557 ret = mkdir( path, mode );
1558 if (ret || st_invalid)
1560 ad_chown(path, &stbuf);
1565 static void ad_init_func(struct adouble *ad)
1567 switch (ad->ad_vers) {
1569 ad->ad_ops = &ad_adouble;
1570 ad->ad_rfp = &ad->ad_resource_fork;
1571 ad->ad_mdp = &ad->ad_resource_fork;
1574 ad->ad_ops = &ad_adouble_ea;
1575 ad->ad_rfp = &ad->ad_resource_fork;
1576 ad->ad_mdp = &ad->ad_data_fork;
1579 AFP_PANIC("ad_init: unknown AD version");
1583 ad_data_fileno(ad) = -1;
1584 ad_reso_fileno(ad) = -1;
1585 ad_meta_fileno(ad) = -1;
1586 ad->ad_refcount = 1;
1591 void ad_init_old(struct adouble *ad, int flags, int options)
1593 memset(ad, 0, sizeof(struct adouble));
1594 ad->ad_vers = flags;
1595 ad->ad_options = options;
1599 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1601 memset(ad, 0, sizeof(struct adouble));
1602 ad->ad_vers = vol->v_adouble;
1603 ad->ad_options = vol->v_ad_options;
1608 * Open data-, metadata(header)- or ressource fork
1610 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1611 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1613 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1616 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1619 * Open a files data fork, metadata fork or ressource fork.
1621 * @param ad (rw) pointer to struct adouble
1622 * @param path (r) Path to file or directory
1623 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1624 * ADFLAGS_DF: open data fork
1625 * ADFLAGS_RF: open ressource fork
1626 * ADFLAGS_HF: open header (metadata) file
1627 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1628 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1629 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1631 * Access mode for the forks:
1632 * ADFLAGS_RDONLY: open read only
1633 * ADFLAGS_RDWR: open read write
1636 * ADFLAGS_CREATE: create if not existing
1637 * ADFLAGS_TRUNC: truncate
1640 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1641 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1642 * This basically results in the files being opened RW instead of RDONLY.
1643 * @param mode (r) mode used with O_CREATE
1645 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1646 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1647 * fds of the same file
1649 * @returns 0 on success, any other value indicates an error
1651 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1657 LOG(log_debug, logtype_ad,
1658 "ad_open(\"%s\", %s): BEGIN {d: %d, m: %d, r: %d}"
1659 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1660 fullpathname(path), adflags2logstr(adflags),
1661 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1662 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1663 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1664 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1666 if (adflags & ADFLAGS_CHECK_OF)
1667 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1668 adflags |= ADFLAGS_SETSHRMD;
1670 if (adflags & ADFLAGS_SETSHRMD)
1671 /* sharemode locks are stored in the data fork */
1672 adflags |= ADFLAGS_DF;
1674 if (ad->ad_vers == AD_VERSION2) {
1675 if (adflags & ADFLAGS_RF)
1676 adflags |= ADFLAGS_HF;
1677 if (adflags & ADFLAGS_NORF)
1678 adflags |= ADFLAGS_NOHF;
1681 if (ad->ad_inited != AD_INITED) {
1682 ad->ad_adflags = adflags;
1683 ad->ad_inited = AD_INITED;
1685 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1686 if (ad->ad_resource_fork.adf_refcount > 0)
1687 ad->ad_open_forks |= ATTRBIT_ROPEN;
1690 va_start(args, adflags);
1691 if (adflags & ADFLAGS_CREATE)
1692 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1695 if (adflags & ADFLAGS_DF) {
1696 ad->ad_data_refcount++;
1697 if (ad_open_df(path, adflags, mode, ad) != 0) {
1698 ad->ad_data_refcount--;
1703 if (adflags & ADFLAGS_HF) {
1704 if (ad_open_hf(path, adflags, mode, ad) != 0) {
1709 if (adflags & ADFLAGS_RF) {
1710 if (ad_open_rf(path, adflags, mode, ad) != 0) {
1715 if (adflags & ADFLAGS_CHECK_OF) {
1716 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1720 LOG(log_debug, logtype_ad,
1721 "ad_open(\"%s\"): END: %d {d: %d, m: %d, r: %d}"
1722 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1723 fullpathname(path), ret,
1724 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
1725 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1726 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1727 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1733 * @brief open metadata, possibly as root
1735 * Return only metadata but try very hard ie at first try as user, then try as root.
1737 * @param name name of file/dir
1738 * @param flags ADFLAGS_DIR: name is a directory \n
1739 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1741 * @param adp pointer to struct adouble
1743 int ad_metadata(const char *name, int flags, struct adouble *adp)
1745 int ret, err, oflags;
1747 /* Sanitize flags */
1748 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1750 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1752 ret = ad_open(adp, name, oflags);
1762 * @brief openat like wrapper for ad_metadata
1764 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1770 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1776 if (ad_metadata(name, flags, adp) < 0) {
1783 if (fchdir(cwdfd) != 0) {
1784 LOG(log_error, logtype_ad, "ad_openat: cant chdir back, exiting");
1797 int ad_refresh(const char *path, struct adouble *ad)
1799 switch (ad->ad_vers) {
1801 if (ad_meta_fileno(ad) == -1)
1803 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1807 if (AD_META_OPEN(ad)) {
1808 if (ad_data_fileno(ad) == -1)
1810 // TODO: read meta EA
1813 if (AD_RSRC_OPEN(ad)) {
1814 if (ad_reso_fileno(ad) == -1)
1817 if (fstat(ad_reso_fileno(ad), &st) == -1)
1819 ad->ad_rlen = st.st_size;
1822 if (AD_META_OPEN(ad)) {
1823 if (ad_data_fileno(ad) == -1)
1825 // TODO: read meta EA
1827 if (AD_RSRC_OPEN(ad)) {
1828 if (ad_reso_fileno(ad) == -1)
1830 if (ad_header_read_osx(path, ad, NULL) < 0)
1834 return ad->ad_ops->ad_header_read(path, ad, NULL);
1843 int ad_openat(struct adouble *ad,
1844 int dirfd, /* dir fd openat like */
1854 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1858 va_start(args, adflags);
1859 if (adflags & ADFLAGS_CREATE)
1860 mode = (sizeof(mode_t) < sizeof(int) ? va_arg (args, int) : va_arg (args, mode_t));
1863 EC_NEG1( ad_open(ad, path, adflags, mode) );
1866 if (fchdir(cwdfd) != 0) {
1867 AFP_PANIC("ad_openat: cant chdir back");
1878 /* build a resource fork mode from the data fork mode:
1879 * remove X mode and extend header to RW if R or W (W if R for locking),
1881 mode_t ad_hf_mode(mode_t mode)
1883 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1884 /* fnctl lock need write access */
1885 if ((mode & S_IRUSR))
1887 if ((mode & S_IRGRP))
1889 if ((mode & S_IROTH))
1892 /* if write mode set add read mode */
1893 if ((mode & S_IWUSR))
1895 if ((mode & S_IWGRP))
1897 if ((mode & S_IWOTH))