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,
126 static struct adouble_fops ad_adouble_ea = {
134 &ad_rebuild_adouble_header,
136 &ad_header_upgrade_ea,
139 static struct adouble_fops ad_osx = {
142 &ad_rebuild_adouble_header,
147 static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
148 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
149 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
150 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
151 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
152 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
153 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
154 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
155 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
156 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
157 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
158 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
159 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
160 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
164 /* Using Extended Attributes */
165 static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
166 {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
167 {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
168 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
169 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
170 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV_EA, ADEDLEN_INIT},
171 {ADEID_PRIVINO, ADEDOFF_PRIVINO_EA, ADEDLEN_INIT},
172 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN_EA, ADEDLEN_INIT},
173 {ADEID_PRIVID, ADEDOFF_PRIVID_EA, ADEDLEN_INIT},
177 /* fallback for EAs */
178 static const struct entry entry_order_osx[ADEID_NUM_OSX +1] = {
179 {ADEID_FINDERI, ADEDOFF_FINDERI_OSX, ADEDLEN_FINDERI},
180 {ADEID_RFORK, ADEDOFF_RFORK_OSX, ADEDLEN_INIT},
184 #define ADFLAGS2LOGSTRBUFSIZ 128
185 const char *adflags2logstr(int adflags)
188 static char buf[ADFLAGS2LOGSTRBUFSIZ];
192 if (adflags & ADFLAGS_DF) {
193 strlcat(buf, "DF", ADFLAGS2LOGSTRBUFSIZ);
196 if (adflags & ADFLAGS_RF) {
198 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
199 strlcat(buf, "RF", ADFLAGS2LOGSTRBUFSIZ);
202 if (adflags & ADFLAGS_NORF) {
204 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
205 strlcat(buf, "NORF", ADFLAGS2LOGSTRBUFSIZ);
208 if (adflags & ADFLAGS_HF) {
210 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
211 strlcat(buf, "HF", ADFLAGS2LOGSTRBUFSIZ);
214 if (adflags & ADFLAGS_NOHF) {
216 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
217 strlcat(buf, "NOHF", ADFLAGS2LOGSTRBUFSIZ);
220 if (adflags & ADFLAGS_DIR) {
222 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
223 strlcat(buf, "DIR", ADFLAGS2LOGSTRBUFSIZ);
226 if (adflags & ADFLAGS_CHECK_OF) {
228 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
229 strlcat(buf, "OF", ADFLAGS2LOGSTRBUFSIZ);
232 if (adflags & ADFLAGS_SETSHRMD) {
234 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
235 strlcat(buf, "SHRMD", ADFLAGS2LOGSTRBUFSIZ);
238 if (adflags & ADFLAGS_RDWR) {
240 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
241 strlcat(buf, "O_RDWR", ADFLAGS2LOGSTRBUFSIZ);
244 if (adflags & ADFLAGS_RDONLY) {
246 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
247 strlcat(buf, "O_RDONLY", ADFLAGS2LOGSTRBUFSIZ);
250 if (adflags & ADFLAGS_CREATE) {
252 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
253 strlcat(buf, "O_CREAT", ADFLAGS2LOGSTRBUFSIZ);
256 if (adflags & ADFLAGS_EXCL) {
258 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
259 strlcat(buf, "O_EXCL", ADFLAGS2LOGSTRBUFSIZ);
262 if (adflags & ADFLAGS_TRUNC) {
264 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
265 strlcat(buf, "O_TRUNC", ADFLAGS2LOGSTRBUFSIZ);
272 #define OPENFLAGS2LOGSTRBUFSIZ 128
273 const char *openflags2logstr(int oflags)
276 static char buf[OPENFLAGS2LOGSTRBUFSIZ];
280 if ((oflags & O_RDONLY) || (oflags == O_RDONLY)) {
281 strlcat(buf, "O_RDONLY", OPENFLAGS2LOGSTRBUFSIZ);
284 if (oflags & O_RDWR) {
286 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
287 strlcat(buf, "O_RDWR", OPENFLAGS2LOGSTRBUFSIZ);
290 if (oflags & O_CREAT) {
292 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
293 strlcat(buf, "O_CREAT", OPENFLAGS2LOGSTRBUFSIZ);
296 if (oflags & O_TRUNC) {
298 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
299 strlcat(buf, "O_TRUNC", OPENFLAGS2LOGSTRBUFSIZ);
302 if (oflags & O_EXCL) {
304 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
305 strlcat(buf, "O_EXCL", OPENFLAGS2LOGSTRBUFSIZ);
311 static uint32_t get_eid(uint32_t eid)
316 return ADEID_PRIVDEV;
318 return ADEID_PRIVINO;
320 return ADEID_PRIVSYN;
327 /* ----------------------------------- */
328 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
330 const struct entry *eid;
334 LOG(log_debug, logtype_default, "new_ad_header(\"%s\")", path);
338 if (lstat(path, &st) != 0)
342 ad->ad_magic = AD_MAGIC;
343 ad->ad_version = ad->ad_vers & 0x0f0000;
344 if (!ad->ad_version) {
345 ad->ad_version = AD_VERSION;
348 memset(ad->ad_data, 0, sizeof(ad->ad_data));
350 if (ad->ad_vers == AD_VERSION2)
352 else if (ad->ad_vers == AD_VERSION_EA)
353 eid = entry_order_ea;
354 else if (ad->ad_vers == AD_VERSION2_OSX)
355 eid = entry_order_osx;
361 ad->ad_eid[eid->id].ade_off = eid->offset;
362 ad->ad_eid[eid->id].ade_len = eid->len;
366 /* put something sane in the directory finderinfo */
367 if (ad->ad_vers != AD_VERSION2_OSX) {
368 if ((adflags & ADFLAGS_DIR)) {
369 /* set default view */
370 ashort = htons(FINDERINFO_CLOSEDVIEW);
371 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
373 /* set default creator/type fields */
374 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
375 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
378 /* make things invisible */
379 if ((ad->ad_options & ADVOL_INVDOTS)
381 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
383 ashort = htons(ATTRBIT_INVISIBLE);
384 ad_setattr(ad, ashort);
385 ashort = htons(FINDERINFO_INVISIBLE);
386 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
389 /* put something sane in the date fields */
390 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
391 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
392 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
393 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
398 /* -------------------------------------
401 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
403 uint32_t eid, len, off;
406 /* now, read in the entry bits */
407 for (; nentries > 0; nentries-- ) {
408 memcpy(&eid, buf, sizeof( eid ));
409 eid = get_eid(ntohl(eid));
410 buf += sizeof( eid );
411 memcpy(&off, buf, sizeof( off ));
413 buf += sizeof( off );
414 memcpy(&len, buf, sizeof( len ));
416 buf += sizeof( len );
420 && off < sizeof(ad->ad_data)
421 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
422 ad->ad_eid[ eid ].ade_off = off;
423 ad->ad_eid[ eid ].ade_len = len;
424 } else if (!warning) {
426 LOG(log_warning, logtype_default, "parse_entries: bogus eid: %d", eid);
431 /* this reads enough of the header so that we can figure out all of
432 * the entry lengths and offsets. once that's done, we just read/mmap
433 * the rest of the header in.
435 * NOTE: we're assuming that the resource fork is kept at the end of
436 * the file. also, mmapping won't work for the hfs fs until it
437 * understands how to mmap header files. */
438 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
440 char *buf = ad->ad_data;
446 /* read the header */
447 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
450 if (header_len < AD_HEADER_LEN) {
455 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
456 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
457 ad->ad_magic = ntohl( ad->ad_magic );
458 ad->ad_version = ntohl( ad->ad_version );
460 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
461 LOG(log_error, logtype_default, "ad_open: can't parse AppleDouble header.");
466 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
467 nentries = ntohs( nentries );
469 /* read in all the entry headers. if we have more than the
470 * maximum, just hope that the rfork is specified early on. */
471 len = nentries*AD_ENTRY_LEN;
473 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
474 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
476 buf += AD_HEADER_LEN;
477 if (len > header_len - AD_HEADER_LEN) {
478 LOG(log_error, logtype_default, "ad_header_read: can't read entry info.");
483 /* figure out all of the entry offsets and lengths. if we aren't
484 * able to read a resource fork entry, bail. */
485 nentries = len / AD_ENTRY_LEN;
486 parse_entries(ad, buf, nentries);
487 if (!ad_getentryoff(ad, ADEID_RFORK)
488 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
490 LOG(log_error, logtype_default, "ad_header_read: problem with rfork entry offset.");
495 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
496 LOG(log_error, logtype_default, "ad_header_read: can't read in entries.");
503 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
504 return 1; /* fail silently */
508 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
513 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
514 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
517 struct adouble adosx;
518 char *buf = &adosx.ad_data[0];
524 memset(buf, 0, sizeof(adosx.ad_data));
526 /* read the header */
527 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
529 if (header_len < AD_HEADER_LEN) {
534 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
535 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
536 adosx.ad_magic = ntohl(adosx.ad_magic);
537 adosx.ad_version = ntohl(adosx.ad_version);
539 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
540 LOG(log_error, logtype_afpd, "ad_header_read_osx: can't parse AppleDouble header");
545 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
546 nentries = ntohs(nentries);
547 len = nentries * AD_ENTRY_LEN;
549 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
550 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
552 buf += AD_HEADER_LEN;
553 if (len > header_len - AD_HEADER_LEN) {
554 LOG(log_error, logtype_afpd, "ad_header_read_osx: can't read entry info.");
559 nentries = len / AD_ENTRY_LEN;
560 parse_entries(&adosx, buf, nentries);
562 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
563 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
564 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
566 LOG(log_error, logtype_afpd, "ad_header_read_osx: problem with rfork entry offset.");
573 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
576 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
577 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
583 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
588 char *buf = ad->ad_data;
590 if (ad_meta_fileno(ad) != -1)
591 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
593 header_len = sys_lgetxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
594 if (header_len < 1) {
595 LOG(log_debug, logtype_default, "ad_header_read_ea: %s", strerror(errno));
599 if (header_len < AD_HEADER_LEN) {
600 LOG(log_error, logtype_default, "ad_header_read_ea: bogus AppleDouble header.");
605 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
606 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
608 ad->ad_magic = ntohl( ad->ad_magic );
609 ad->ad_version = ntohl( ad->ad_version );
611 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
612 LOG(log_error, logtype_default, "ad_header_read_ea: wrong magic or version");
617 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
618 nentries = ntohs( nentries );
620 /* Protect against bogus nentries */
621 len = nentries * AD_ENTRY_LEN;
622 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
623 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
624 if (len > header_len - AD_HEADER_LEN) {
625 LOG(log_error, logtype_default, "ad_header_read_ea: can't read entry info.");
629 nentries = len / AD_ENTRY_LEN;
631 /* Now parse entries */
632 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
638 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
641 * path: "/path/.AppleDouble/file"
642 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
644 static int ad_mkrf(const char *path)
648 * Probably .AppleDouble doesn't exist, try to mkdir it.
650 if (NULL == ( slash = strrchr( path, '/' )) ) {
655 if ( ad_mkdir( path, 0777 ) < 0 ) {
662 static int ad_mkrf_ea(const char *path _U_)
664 AFP_PANIC("ad_mkrf_ea: dont use");
668 static int ad_mkrf_osx(const char *path _U_)
674 if we are root change path user/ group
675 It can be a native function for BSD cf. FAQ.Q10
676 path: pathname to chown
677 stbuf: parent directory inode
679 use fstat and fchown or lchown with linux?
681 #define EMULATE_SUIDDIR
683 static int ad_chown(const char *path, struct stat *stbuf)
686 #ifdef EMULATE_SUIDDIR
689 if (default_uid != (uid_t)-1) {
690 /* we are root (admin) */
691 id = (default_uid)?default_uid:stbuf->st_uid;
692 ret = lchown( path, id, stbuf->st_gid );
698 #define DEFMASK 07700 /* be conservative */
701 return access right and inode of path parent directory
703 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
708 if (ad_stat(path, stbuf) != 0) {
712 *mode &= stbuf->st_mode;
716 /* --------------------------- */
717 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
722 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
724 AFP_PANIC("ad_header_upgrade_ea: dont use");
729 * Error handling for adouble header(=metadata) file open error
731 * We're called because opening ADFLAGS_HF caused an error.
732 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
733 * 2. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
734 * ought to close it before returning with an error condition.
736 static int ad_error(struct adouble *ad, int adflags)
739 if (adflags & ADFLAGS_NOHF) { /* 1 */
742 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 2 */
743 ad_close( ad, ADFLAGS_DF );
750 * Map ADFLAGS to open() flags
752 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
753 * @param adflags (r) flags from ad_open(..., adflags, ...)
754 * @returns mapped flags suitable for calling open()
756 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
760 if (adflags & ADFLAGS_RDWR)
762 if (adflags & ADFLAGS_RDONLY) {
763 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
764 /* need rw access for locks */
765 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
766 /* need rw access for adouble file for the case:
767 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
772 if (adflags & ADFLAGS_CREATE)
774 if (adflags & ADFLAGS_EXCL)
776 if (adflags & ADFLAGS_TRUNC)
782 static int ad_conv_v22ea_hf(const char *path, const struct stat *sp, const struct vol *vol)
790 LOG(log_debug, logtype_default,"ad_conv_v22ea_hf(\"%s\"): BEGIN", fullpathname(path));
793 ad_init_old(&adv2, AD_VERSION2, adea.ad_options);
794 adflags = S_ISDIR(sp->st_mode) ? ADFLAGS_DIR : 0;
796 /* Open and lock adouble:v2 file */
797 EC_ZERO( ad_open(&adv2, path, adflags | ADFLAGS_HF | ADFLAGS_RDWR) );
798 EC_NEG1_LOG( ad_tmplock(&adv2, ADEID_RFORK, ADLOCK_WR | ADLOCK_FILELOCK, 0, 0, 0) );
799 EC_NEG1_LOG( adv2.ad_ops->ad_header_read(path, &adv2, sp) );
801 /* Create a adouble:ea meta EA */
802 EC_ZERO_LOG( ad_open(&adea, path, adflags | ADFLAGS_HF | ADFLAGS_RDWR | ADFLAGS_CREATE) );
803 EC_ZERO_LOG( ad_copy_header(&adea, &adv2) );
807 EC_ZERO_LOG( ad_close(&adv2, ADFLAGS_HF | ADFLAGS_SETSHRMD) );
808 EC_ZERO_LOG( ad_close(&adea, ADFLAGS_HF | ADFLAGS_SETSHRMD) );
809 LOG(log_debug, logtype_default,"ad_conv_v22ea_hf(\"%s\"): END: %d", fullpathname(path), ret);
813 static int ad_conv_v22ea_rf(const char *path, const struct stat *sp, const struct vol *vol)
819 LOG(log_debug, logtype_default,"ad_conv_v22ea_rf(\"%s\"): BEGIN", fullpathname(path));
821 if (S_ISDIR(sp->st_mode))
825 ad_init_old(&adv2, AD_VERSION2, adea.ad_options);
827 /* Open and lock adouble:v2 file */
828 EC_ZERO( ad_open(&adv2, path, ADFLAGS_HF | ADFLAGS_RF | ADFLAGS_RDWR) );
829 if (adv2.ad_rlen > 0) {
830 EC_NEG1_LOG( ad_tmplock(&adv2, ADEID_RFORK, ADLOCK_WR | ADLOCK_FILELOCK, 0, 0, 0) );
832 /* Create a adouble:ea resource fork */
833 EC_ZERO_LOG( ad_open(&adea, path, ADFLAGS_HF | ADFLAGS_RF | ADFLAGS_RDWR | ADFLAGS_CREATE, 0666) );
835 EC_ZERO_LOG( copy_fork(ADEID_RFORK, &adea, &adv2) );
836 adea.ad_rlen = adv2.ad_rlen;
841 EC_ZERO_LOG( ad_close(&adv2, ADFLAGS_HF | ADFLAGS_RF) );
842 EC_ZERO_LOG( ad_close(&adea, ADFLAGS_HF | ADFLAGS_RF) );
843 LOG(log_debug, logtype_default,"ad_conv_v22ea_rf(\"%s\"): END: %d", fullpathname(path), ret);
847 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
856 LOG(log_debug, logtype_default,
857 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
858 fullpathname(path), adflags2logstr(adflags),
859 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
860 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
861 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
863 if (ad_data_fileno(ad) != -1) {
864 /* the file is already open, but we want write access: */
865 if ((adflags & ADFLAGS_RDWR)
866 /* and it was denied the first time: */
867 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
871 /* it's not new anymore */
872 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
873 ad->ad_data_fork.adf_refcount++;
877 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_DF, adflags);
880 if ((adflags & ADFLAGS_CREATE)) {
881 st_invalid = ad_mode_st(path, &admode, &st_dir);
882 if ((ad->ad_options & ADVOL_UNIXPRIV))
886 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
888 if (ad->ad_data_fork.adf_fd == -1) {
893 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
896 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
900 case OPEN_NOFOLLOW_ERRNO:
901 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
902 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
903 free(ad->ad_data_fork.adf_syml);
906 ad->ad_data_fork.adf_syml[lsz] = 0;
907 ad->ad_data_fork.adf_fd = -2; /* -2 means its a symlink */
915 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
917 ad->ad_data_fork.adf_flags = oflags;
918 adf_lock_init(&ad->ad_data_fork);
919 ad->ad_data_fork.adf_refcount++;
922 LOG(log_debug, logtype_default,
923 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
924 fullpathname(path), adflags2logstr(adflags), ret,
925 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
926 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
927 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
931 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
936 struct stat *pst = NULL;
938 int oflags, nocreatflags, opened = 0;
942 LOG(log_debug, logtype_default,
943 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
944 fullpathname(path), adflags2logstr(adflags),
945 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
946 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
947 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
949 if (ad_meta_fileno(ad) != -1) {
950 /* the file is already open, but we want write access: */
951 if ((adflags & ADFLAGS_RDWR) &&
952 /* and it was already denied: */
953 (ad->ad_mdp->adf_flags & O_RDONLY)) {
957 ad_refresh(path, ad);
958 /* it's not new anymore */
959 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
960 ad->ad_mdp->adf_refcount++;
964 ad_p = ad->ad_ops->ad_path(path, adflags);
965 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_HF, adflags);
966 LOG(log_debug, logtype_default,"ad_open_hf_v2(\"%s\"): open flags: %s",
967 fullpathname(path), openflags2logstr(oflags));
968 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
970 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
972 if (ad_meta_fileno(ad) != -1) {
973 ad->ad_mdp->adf_flags = nocreatflags;
979 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
980 nocreatflags &= ~O_RDWR;
981 nocreatflags |= O_RDONLY;
982 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
983 ad->ad_mdp->adf_flags = nocreatflags;
988 if (!(oflags & O_CREAT))
991 * We're expecting to create a new adouble header file here
993 LOG(log_debug, logtype_default, "ad_open(\"%s\"): creating adouble file",
997 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
998 if ((ad->ad_options & ADVOL_UNIXPRIV))
1000 admode = ad_hf_mode(admode);
1001 if (errno == ENOENT) {
1002 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
1004 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1005 if ((ad->ad_options & ADVOL_UNIXPRIV))
1007 admode = ad_hf_mode(admode);
1010 /* retry with O_CREAT */
1011 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1012 ad->ad_mdp->adf_flags = oflags;
1013 /* just created, set owner if admin owner (root) */
1015 ad_chown(ad_p, &st_dir);
1022 /* Now we've got a new opened fd, we need to check that in the error case */
1025 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1026 /* check for 0 length files, treat them as new. */
1027 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1028 if (st_meta.st_size == 0)
1029 ad->ad_mdp->adf_flags |= O_TRUNC;
1031 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1036 adf_lock_init(ad->ad_mdp);
1037 ad->ad_mdp->adf_refcount = 1;
1039 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1040 /* This is a new adouble header file, create it */
1041 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1044 /* Read the adouble header in and parse it.*/
1045 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1049 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1050 close(ad_meta_fileno(ad));
1051 ad_meta_fileno(ad) = -1;
1052 ad->ad_mdp->adf_refcount = 0;
1054 LOG(log_debug, logtype_default,
1055 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1056 fullpathname(path), adflags2logstr(adflags), ret,
1057 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1058 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1059 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1063 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1070 LOG(log_debug, logtype_default,
1071 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1072 fullpathname(path), adflags2logstr(adflags),
1073 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1074 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1075 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1077 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC));
1079 if (ad_meta_fileno(ad) == -2)
1083 if (ad_meta_fileno(ad) != -1) {
1084 /* the file is already open, but we want write access: */
1085 if ((oflags & O_RDWR) &&
1086 /* and it was already denied: */
1087 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1088 LOG(log_error, logtype_default, "ad_open_hf_ea(%s): rw request for ro file: %s",
1089 fullpathname(path), strerror(errno));
1093 /* it's not new anymore */
1094 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1096 if (oflags & O_RDWR) {
1097 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1098 if (adflags & ADFLAGS_DIR)
1099 /* For directories we open the directory RDONYL so we can later fchdir() */
1100 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1101 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1102 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1104 ad->ad_mdp->adf_flags = oflags;
1108 /* Read the adouble header in and parse it.*/
1109 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1110 if (!(adflags & ADFLAGS_CREATE)) {
1111 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1116 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1118 /* It doesnt exist, EPERM or another error */
1119 if (!(errno == ENOATTR || errno == ENOENT)) {
1120 LOG(log_error, logtype_default, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1125 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1126 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1128 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1131 ad->ad_mdp->adf_refcount++;
1132 (void)ad_reso_size(path, adflags, ad);
1135 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1136 close(ad_meta_fileno(ad));
1137 ad_meta_fileno(ad) = -1;
1138 ad->ad_mdp->adf_refcount = 0;
1140 LOG(log_debug, logtype_default,
1141 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1142 fullpathname(path), adflags2logstr(adflags), ret,
1143 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1144 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1145 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1150 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1154 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1157 switch (ad->ad_vers) {
1159 ret = ad_open_hf_v2(path, adflags, mode, ad);
1162 ret = ad_open_hf_ea(path, adflags, mode, ad);
1170 ret = ad_error(ad, adflags);
1176 * Get resofork length for adouble:ea
1178 static int ad_reso_size(const char *path, int adflags, struct adouble *ad)
1183 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\")", path);
1188 if (ad_reso_fileno(ad) != -1) {
1189 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1190 ad->ad_rlen = st.st_size;
1191 } else if (ad_meta_fileno(ad) != -1) {
1192 EC_NEG1( easz = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0) );
1200 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags));
1201 EC_ZERO( lstat(rfpath, &st));
1202 if (st.st_size > ADEDOFF_RFORK_OSX)
1203 ad->ad_rlen = st.st_size - ADEDOFF_RFORK_OSX;
1208 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\"): size: %zd", path, ad->ad_rlen);
1216 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1219 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1220 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1222 if (!AD_RSRC_OPEN(ad) && !(adflags & ADFLAGS_NORF))
1227 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1232 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1239 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1241 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT);
1243 if (ad_reso_fileno(ad) != -1) {
1244 /* the file is already open, but we want write access: */
1245 if ((oflags & O_RDWR)
1246 /* and it was already denied: */
1247 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1251 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1252 ad->ad_rfp->adf_refcount++;
1253 EC_NEG1_LOG( ad_reso_size(path, adflags, ad));
1257 if (ad_meta_fileno(ad) == -1)
1259 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1260 if (!(adflags & ADFLAGS_CREATE)) {
1265 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1266 AD_EA_RESO, oflags, 0666) );
1269 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1270 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1271 if (!(adflags & ADFLAGS_CREATE))
1274 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1275 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1280 ad->ad_rfp->adf_refcount = 1;
1281 ad->ad_rfp->adf_flags = oflags;
1284 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1285 if (ad->ad_rfp->adf_flags & O_CREAT) {
1286 /* This is a new adouble header file, create it */
1287 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1289 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1293 /* Read the adouble header */
1294 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1296 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1300 (void)ad_reso_size(path, adflags, ad);
1304 if (opened && (ad_reso_fileno(ad) != -1)) {
1305 close(ad_reso_fileno(ad));
1306 ad_reso_fileno(ad) = -1;
1307 ad->ad_rfp->adf_refcount = 0;
1309 if (adflags & ADFLAGS_NORF) {
1313 (void)ad_close(ad, closeflags);
1319 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1325 * Open ressource fork
1327 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1331 switch (ad->ad_vers) {
1333 ret = ad_open_rf_v2(path, adflags, mode, ad);
1336 ret = ad_open_rf_ea(path, adflags, mode, ad);
1346 /***********************************************************************************
1348 ********************************************************************************* */
1350 off_t ad_getentryoff(const struct adouble *ad, int eid)
1352 if (ad->ad_vers == AD_VERSION2)
1353 return ad->ad_eid[eid].ade_off;
1362 return ADEDOFF_RFORK_OSX;
1365 return ad->ad_eid[eid].ade_off;
1368 AFP_PANIC("What am I doing here?");
1371 const char *ad_path_ea( const char *path, int adflags _U_)
1376 const char *ad_path_osx(const char *path, int adflags _U_)
1378 static char pathbuf[ MAXPATHLEN + 1];
1379 char c, *slash, buf[MAXPATHLEN + 1];
1381 if (!strcmp(path,".")) {
1383 getcwd(buf, MAXPATHLEN);
1386 strlcpy(buf, path, MAXPATHLEN +1);
1388 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1391 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1394 pathbuf[ 0 ] = '\0';
1397 strlcat( pathbuf, "._", MAXPATHLEN +1);
1398 strlcat( pathbuf, slash, MAXPATHLEN +1);
1403 * Put the .AppleDouble where it needs to be:
1405 * / a/.AppleDouble/b
1407 * \ b/.AppleDouble/.Parent
1409 * FIXME: should do something for pathname > MAXPATHLEN
1411 const char *ad_path( const char *path, int adflags)
1413 static char pathbuf[ MAXPATHLEN + 1];
1417 if ( adflags & ADFLAGS_DIR ) {
1418 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1420 if ( l && l < MAXPATHLEN) {
1423 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1425 if (NULL != ( slash = strrchr( path, '/' )) ) {
1428 /* XXX we must return NULL here and test in the caller */
1431 memcpy( pathbuf, path, l);
1436 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1437 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1443 /* -------------------------
1444 * Support inherited protection modes for AppleDouble files. The supplied
1445 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1446 * and that value is returned.
1448 char *ad_dir(const char *path)
1450 static char modebuf[ MAXPATHLEN + 1];
1453 * For a path with directories in it, remove the final component
1454 * (path or subdirectory name) to get the name we want to stat.
1455 * For a path which is just a filename, use "." instead.
1457 slash = strrchr( path, '/' );
1462 if (len >= MAXPATHLEN) {
1463 errno = ENAMETOOLONG;
1464 return NULL; /* can't do it */
1466 memcpy( modebuf, path, len );
1467 modebuf[len] = '\0';
1468 /* is last char a '/' ? */
1469 if (slash[1] == 0) {
1470 slash = modebuf+ len;
1472 while (modebuf < slash && slash[-1] == '/') {
1475 if (modebuf == slash) {
1479 while (modebuf < slash && *slash != '/') {
1482 if (modebuf == slash) {
1485 *slash = '\0'; /* remove pathname component */
1490 modebuf[0] = '.'; /* use current directory */
1495 int ad_setfuid(const uid_t id)
1501 /* ---------------- */
1502 uid_t ad_getfuid(void)
1508 stat path parent directory
1510 int ad_stat(const char *path, struct stat *stbuf)
1517 return lstat( p, stbuf );
1521 return access right of path parent directory
1523 int ad_mode( const char *path, mode_t mode)
1526 ad_mode_st(path, &mode, &stbuf);
1531 * Use mkdir() with mode bits taken from ad_mode().
1533 int ad_mkdir( const char *path, mode_t mode)
1539 LOG(log_debug, logtype_default, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1540 path, mode, getcwdpath());
1542 st_invalid = ad_mode_st(path, &mode, &stbuf);
1543 ret = mkdir( path, mode );
1544 if (ret || st_invalid)
1546 ad_chown(path, &stbuf);
1551 static void ad_init_func(struct adouble *ad)
1553 switch (ad->ad_vers) {
1555 ad->ad_ops = &ad_adouble;
1556 ad->ad_rfp = &ad->ad_resource_fork;
1557 ad->ad_mdp = &ad->ad_resource_fork;
1560 ad->ad_ops = &ad_adouble_ea;
1561 ad->ad_rfp = &ad->ad_resource_fork;
1562 ad->ad_mdp = &ad->ad_data_fork;
1565 AFP_PANIC("ad_init: unknown AD version");
1569 ad_data_fileno(ad) = -1;
1570 ad_reso_fileno(ad) = -1;
1571 ad_meta_fileno(ad) = -1;
1572 ad->ad_refcount = 1;
1576 void ad_init_old(struct adouble *ad, int flags, int options)
1578 memset(ad, 0, sizeof(struct adouble));
1579 ad->ad_vers = flags;
1580 ad->ad_options = options;
1584 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1586 memset(ad, 0, sizeof(struct adouble));
1587 ad->ad_vers = vol->v_adouble;
1588 ad->ad_options = vol->v_ad_options;
1593 * Open data-, metadata(header)- or ressource fork
1595 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1596 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1598 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1601 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1604 * Open a files data fork, metadata fork or ressource fork.
1606 * @param ad (rw) pointer to struct adouble
1607 * @param path (r) Path to file or directory
1608 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1609 * ADFLAGS_DF: open data fork
1610 * ADFLAGS_RF: open ressource fork
1611 * ADFLAGS_HF: open header (metadata) file
1612 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1613 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1614 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1616 * Access mode for the forks:
1617 * ADFLAGS_RDONLY: open read only
1618 * ADFLAGS_RDWR: open read write
1621 * ADFLAGS_CREATE: create if not existing
1622 * ADFLAGS_TRUNC: truncate
1625 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1626 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1627 * This basically results in the files being opened RW instead of RDONLY.
1628 * @param mode (r) mode used with O_CREATE
1630 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1631 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1632 * fds of the same file
1634 * @returns 0 on success, any other value indicates an error
1636 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1642 LOG(log_debug, logtype_default,
1643 "ad_open(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1644 fullpathname(path), adflags2logstr(adflags),
1645 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1646 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1647 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1649 if (adflags & ADFLAGS_CHECK_OF)
1650 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1651 adflags |= ADFLAGS_SETSHRMD;
1653 if (adflags & ADFLAGS_SETSHRMD)
1654 /* sharemode locks are stored in the data fork */
1655 adflags |= ADFLAGS_DF;
1657 if (ad->ad_vers == AD_VERSION2) {
1658 if (adflags & ADFLAGS_RF)
1659 adflags |= ADFLAGS_HF;
1660 if (adflags & ADFLAGS_NORF)
1661 adflags |= ADFLAGS_NOHF;
1664 if (ad->ad_inited != AD_INITED) {
1665 ad->ad_adflags = adflags;
1666 ad->ad_inited = AD_INITED;
1668 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1669 if (ad->ad_resource_fork.adf_refcount > 0)
1670 ad->ad_open_forks |= ATTRBIT_ROPEN;
1673 va_start(args, adflags);
1674 if (adflags & ADFLAGS_CREATE)
1675 mode = va_arg(args, mode_t);
1678 if (adflags & ADFLAGS_DF) {
1679 EC_ZERO( ad_open_df(path, adflags, mode, ad) );
1682 if (adflags & ADFLAGS_HF) {
1683 EC_ZERO( ad_open_hf(path, adflags, mode, ad) );
1686 if (adflags & ADFLAGS_RF) {
1687 EC_ZERO( ad_open_rf(path, adflags, mode, ad) );
1690 if (adflags & ADFLAGS_CHECK_OF) {
1691 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1695 LOG(log_debug, logtype_default,
1696 "ad_open(\"%s\"): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1697 fullpathname(path), ret,
1698 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1699 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1700 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1706 * @brief open metadata, possibly as root
1708 * Return only metadata but try very hard ie at first try as user, then try as root.
1710 * @param name name of file/dir
1711 * @param flags ADFLAGS_DIR: name is a directory \n
1712 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1714 * @param adp pointer to struct adouble
1716 int ad_metadata(const char *name, int flags, struct adouble *adp)
1719 int ret, err, oflags;
1721 /* Sanitize flags */
1722 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1724 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1727 LOG(log_error, logtype_default, "ad_metadata(%s): seteuid failed %s", name, strerror(errno));
1731 /* we are root open read only */
1732 ret = ad_open(adp, name, oflags);
1734 if ( seteuid(uid) < 0) {
1735 LOG(log_error, logtype_default, "ad_metadata: can't seteuid back");
1745 * @brief openat like wrapper for ad_metadata
1747 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1753 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1759 if (ad_metadata(name, flags, adp) < 0) {
1766 if (fchdir(cwdfd) != 0) {
1767 LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
1780 int ad_refresh(const char *path, struct adouble *ad)
1782 switch (ad->ad_vers) {
1784 if (ad_meta_fileno(ad) == -1)
1786 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1790 if (AD_META_OPEN(ad)) {
1791 if (ad_data_fileno(ad) == -1)
1793 // TODO: read meta EA
1796 if (AD_RSRC_OPEN(ad)) {
1797 if (ad_reso_fileno(ad) == -1)
1800 if (fstat(ad_reso_fileno(ad), &st) == -1)
1802 ad->ad_rlen = st.st_size;
1805 if (AD_META_OPEN(ad)) {
1806 if (ad_data_fileno(ad) == -1)
1808 // TODO: read meta EA
1810 if (AD_RSRC_OPEN(ad)) {
1811 if (ad_reso_fileno(ad) == -1)
1813 if (ad_header_read_osx(path, ad, NULL) < 0)
1817 return ad->ad_ops->ad_header_read(path, ad, NULL);
1826 int ad_openat(struct adouble *ad,
1827 int dirfd, /* dir fd openat like */
1837 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1841 va_start(args, adflags);
1842 if (adflags & ADFLAGS_CREATE)
1843 mode = va_arg(args, mode_t);
1846 EC_NEG1( ad_open(ad, path, adflags, mode) );
1849 if (fchdir(cwdfd) != 0) {
1850 AFP_PANIC("ad_openat: cant chdir back");
1861 int ad_convert(const char *path, const struct stat *sp, const struct vol *vol)
1865 int adflags = S_ISDIR(sp->st_mode) ? ADFLAGS_DIR : 0;
1867 LOG(log_debug, logtype_default,"ad_convert(\"%s\"): BEGIN", fullpathname(path));
1869 if (!(vol->v_adouble == AD_VERSION_EA) || (vol->v_flags & AFPVOL_NOV2TOEACONV))
1872 EC_ZERO( ad_conv_v22ea_hf(path, sp, vol) );
1873 EC_ZERO( ad_conv_v22ea_rf(path, sp, vol) );
1875 EC_NULL( adpath = ad_path(path, adflags) );
1876 LOG(log_debug, logtype_default,"ad_conv_v22ea_hf(\"%s\"): deleting adouble:v2 file: \"%s\"",
1877 path, fullpathname(adpath));
1880 EC_ZERO_LOG( unlink(adpath) );
1884 LOG(log_debug, logtype_default,"ad_convert(\"%s\"): END: %d", fullpathname(path), ret);
1888 /* build a resource fork mode from the data fork mode:
1889 * remove X mode and extend header to RW if R or W (W if R for locking),
1891 mode_t ad_hf_mode(mode_t mode)
1893 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1894 /* fnctl lock need write access */
1895 if ((mode & S_IRUSR))
1897 if ((mode & S_IRGRP))
1899 if ((mode & S_IROTH))
1902 /* if write mode set add read mode */
1903 if ((mode & S_IWUSR))
1905 if ((mode & S_IWGRP))
1907 if ((mode & S_IWOTH))