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) );
812 static int ad_conv_v22ea_rf(const char *path, const struct stat *sp, const struct vol *vol)
818 LOG(log_debug, logtype_default,"ad_conv_v22ea_rf(\"%s\"): BEGIN", fullpathname(path));
820 if (S_ISDIR(sp->st_mode))
824 ad_init_old(&adv2, AD_VERSION2, adea.ad_options);
826 /* Open and lock adouble:v2 file */
827 EC_ZERO( ad_open(&adv2, path, ADFLAGS_HF | ADFLAGS_RF | ADFLAGS_RDWR) );
828 if (adv2.ad_rlen > 0) {
829 EC_NEG1_LOG( ad_tmplock(&adv2, ADEID_RFORK, ADLOCK_WR | ADLOCK_FILELOCK, 0, 0, 0) );
831 /* Create a adouble:ea resource fork */
832 EC_ZERO_LOG( ad_open(&adea, path, ADFLAGS_HF | ADFLAGS_RF | ADFLAGS_RDWR | ADFLAGS_CREATE, 0666) );
834 EC_ZERO_LOG( copy_fork(ADEID_RFORK, &adea, &adv2) );
835 adea.ad_rlen = adv2.ad_rlen;
840 EC_ZERO_LOG( ad_close(&adv2, ADFLAGS_HF | ADFLAGS_RF) );
841 EC_ZERO_LOG( ad_close(&adea, ADFLAGS_HF | ADFLAGS_RF) );
845 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
854 LOG(log_debug, logtype_default,
855 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
856 fullpathname(path), adflags2logstr(adflags),
857 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
858 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
859 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
861 if (ad_data_fileno(ad) != -1) {
862 /* the file is already open, but we want write access: */
863 if ((adflags & ADFLAGS_RDWR)
864 /* and it was denied the first time: */
865 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
869 /* it's not new anymore */
870 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
871 ad->ad_data_fork.adf_refcount++;
875 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_DF, adflags);
878 if ((adflags & ADFLAGS_CREATE)) {
879 st_invalid = ad_mode_st(path, &admode, &st_dir);
880 if ((ad->ad_options & ADVOL_UNIXPRIV))
884 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
886 if (ad->ad_data_fork.adf_fd == -1) {
891 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
894 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
898 case OPEN_NOFOLLOW_ERRNO:
899 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
900 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
901 free(ad->ad_data_fork.adf_syml);
904 ad->ad_data_fork.adf_syml[lsz] = 0;
905 ad->ad_data_fork.adf_fd = -2; /* -2 means its a symlink */
913 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
915 ad->ad_data_fork.adf_flags = oflags;
916 adf_lock_init(&ad->ad_data_fork);
917 ad->ad_data_fork.adf_refcount++;
920 LOG(log_debug, logtype_default,
921 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
922 fullpathname(path), adflags2logstr(adflags), ret,
923 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
924 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
925 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
929 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
934 struct stat *pst = NULL;
936 int oflags, nocreatflags, opened = 0;
940 LOG(log_debug, logtype_default,
941 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
942 fullpathname(path), adflags2logstr(adflags),
943 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
944 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
945 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
947 if (ad_meta_fileno(ad) != -1) {
948 /* the file is already open, but we want write access: */
949 if ((adflags & ADFLAGS_RDWR) &&
950 /* and it was already denied: */
951 (ad->ad_mdp->adf_flags & O_RDONLY)) {
955 ad_refresh(path, ad);
956 /* it's not new anymore */
957 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
958 ad->ad_mdp->adf_refcount++;
962 ad_p = ad->ad_ops->ad_path(path, adflags);
963 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_HF, adflags);
964 LOG(log_debug, logtype_default,"ad_open_hf_v2(\"%s\"): open flags: %s",
965 fullpathname(path), openflags2logstr(oflags));
966 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
968 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
970 if (ad_meta_fileno(ad) != -1) {
971 ad->ad_mdp->adf_flags = nocreatflags;
977 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
978 nocreatflags &= ~O_RDWR;
979 nocreatflags |= O_RDONLY;
980 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
981 ad->ad_mdp->adf_flags = nocreatflags;
986 if (!(oflags & O_CREAT))
989 * We're expecting to create a new adouble header file here
991 LOG(log_debug, logtype_default, "ad_open(\"%s\"): creating adouble file",
995 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
996 if ((ad->ad_options & ADVOL_UNIXPRIV))
998 admode = ad_hf_mode(admode);
999 if (errno == ENOENT) {
1000 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
1002 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
1003 if ((ad->ad_options & ADVOL_UNIXPRIV))
1005 admode = ad_hf_mode(admode);
1008 /* retry with O_CREAT */
1009 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
1010 ad->ad_mdp->adf_flags = oflags;
1011 /* just created, set owner if admin owner (root) */
1013 ad_chown(ad_p, &st_dir);
1020 /* Now we've got a new opened fd, we need to check that in the error case */
1023 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
1024 /* check for 0 length files, treat them as new. */
1025 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
1026 if (st_meta.st_size == 0)
1027 ad->ad_mdp->adf_flags |= O_TRUNC;
1029 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1034 adf_lock_init(ad->ad_mdp);
1035 ad->ad_mdp->adf_refcount = 1;
1037 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1038 /* This is a new adouble header file, create it */
1039 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1042 /* Read the adouble header in and parse it.*/
1043 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1047 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1048 close(ad_meta_fileno(ad));
1049 ad_meta_fileno(ad) = -1;
1050 ad->ad_mdp->adf_refcount = 0;
1052 LOG(log_debug, logtype_default,
1053 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1054 fullpathname(path), adflags2logstr(adflags), ret,
1055 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1056 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1057 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1061 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1068 LOG(log_debug, logtype_default,
1069 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1070 fullpathname(path), adflags2logstr(adflags),
1071 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1072 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1073 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1075 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC));
1077 if (ad_meta_fileno(ad) == -2)
1081 if (ad_meta_fileno(ad) != -1) {
1082 /* the file is already open, but we want write access: */
1083 if ((oflags & O_RDWR) &&
1084 /* and it was already denied: */
1085 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1086 LOG(log_error, logtype_default, "ad_open_hf_ea(%s): rw request for ro file: %s",
1087 fullpathname(path), strerror(errno));
1091 /* it's not new anymore */
1092 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1094 if (oflags & O_RDWR) {
1095 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1096 if (adflags & ADFLAGS_DIR)
1097 /* For directories we open the directory RDONYL so we can later fchdir() */
1098 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1099 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1100 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1102 ad->ad_mdp->adf_flags = oflags;
1106 /* Read the adouble header in and parse it.*/
1107 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1108 if (!(adflags & ADFLAGS_CREATE)) {
1109 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1114 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1116 /* It doesnt exist, EPERM or another error */
1117 if (!(errno == ENOATTR || errno == ENOENT)) {
1118 LOG(log_error, logtype_default, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1123 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1124 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1126 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1129 ad->ad_mdp->adf_refcount++;
1130 (void)ad_reso_size(path, adflags, ad);
1133 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1134 close(ad_meta_fileno(ad));
1135 ad_meta_fileno(ad) = -1;
1136 ad->ad_mdp->adf_refcount = 0;
1138 LOG(log_debug, logtype_default,
1139 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1140 fullpathname(path), adflags2logstr(adflags), ret,
1141 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1142 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1143 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1148 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1152 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1155 switch (ad->ad_vers) {
1157 ret = ad_open_hf_v2(path, adflags, mode, ad);
1160 ret = ad_open_hf_ea(path, adflags, mode, ad);
1168 ret = ad_error(ad, adflags);
1174 * Get resofork length for adouble:ea
1176 static int ad_reso_size(const char *path, int adflags, struct adouble *ad)
1181 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\")", path);
1186 if (ad_reso_fileno(ad) != -1) {
1187 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1188 ad->ad_rlen = st.st_size;
1189 } else if (ad_meta_fileno(ad) != -1) {
1190 EC_NEG1( easz = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0) );
1198 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags));
1199 EC_ZERO( lstat(rfpath, &st));
1200 if (st.st_size > ADEDOFF_RFORK_OSX)
1201 ad->ad_rlen = st.st_size - ADEDOFF_RFORK_OSX;
1206 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\"): size: %zd", path, ad->ad_rlen);
1214 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1217 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1218 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1220 if (!AD_RSRC_OPEN(ad) && !(adflags & ADFLAGS_NORF))
1225 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1230 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1237 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1239 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT);
1241 if (ad_reso_fileno(ad) != -1) {
1242 /* the file is already open, but we want write access: */
1243 if ((oflags & O_RDWR)
1244 /* and it was already denied: */
1245 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1249 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1250 ad->ad_rfp->adf_refcount++;
1251 EC_NEG1_LOG( ad_reso_size(path, adflags, ad));
1255 if (ad_meta_fileno(ad) == -1)
1257 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1258 if (!(adflags & ADFLAGS_CREATE)) {
1263 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1264 AD_EA_RESO, oflags, 0666) );
1267 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1268 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1269 if (!(adflags & ADFLAGS_CREATE))
1272 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1273 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1278 ad->ad_rfp->adf_refcount = 1;
1279 ad->ad_rfp->adf_flags = oflags;
1282 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1283 if (ad->ad_rfp->adf_flags & O_CREAT) {
1284 /* This is a new adouble header file, create it */
1285 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1287 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1291 /* Read the adouble header */
1292 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1294 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1298 (void)ad_reso_size(path, adflags, ad);
1302 if (opened && (ad_reso_fileno(ad) != -1)) {
1303 close(ad_reso_fileno(ad));
1304 ad_reso_fileno(ad) = -1;
1305 ad->ad_rfp->adf_refcount = 0;
1307 if (adflags & ADFLAGS_NORF) {
1311 (void)ad_close(ad, closeflags);
1317 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1323 * Open ressource fork
1325 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1329 switch (ad->ad_vers) {
1331 ret = ad_open_rf_v2(path, adflags, mode, ad);
1334 ret = ad_open_rf_ea(path, adflags, mode, ad);
1344 /***********************************************************************************
1346 ********************************************************************************* */
1348 off_t ad_getentryoff(const struct adouble *ad, int eid)
1350 if (ad->ad_vers == AD_VERSION2)
1351 return ad->ad_eid[eid].ade_off;
1360 return ADEDOFF_RFORK_OSX;
1363 return ad->ad_eid[eid].ade_off;
1366 AFP_PANIC("What am I doing here?");
1369 const char *ad_path_ea( const char *path, int adflags _U_)
1374 const char *ad_path_osx(const char *path, int adflags _U_)
1376 static char pathbuf[ MAXPATHLEN + 1];
1377 char c, *slash, buf[MAXPATHLEN + 1];
1379 if (!strcmp(path,".")) {
1381 getcwd(buf, MAXPATHLEN);
1384 strlcpy(buf, path, MAXPATHLEN +1);
1386 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1389 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1392 pathbuf[ 0 ] = '\0';
1395 strlcat( pathbuf, "._", MAXPATHLEN +1);
1396 strlcat( pathbuf, slash, MAXPATHLEN +1);
1401 * Put the .AppleDouble where it needs to be:
1403 * / a/.AppleDouble/b
1405 * \ b/.AppleDouble/.Parent
1407 * FIXME: should do something for pathname > MAXPATHLEN
1409 const char *ad_path( const char *path, int adflags)
1411 static char pathbuf[ MAXPATHLEN + 1];
1415 if ( adflags & ADFLAGS_DIR ) {
1416 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1418 if ( l && l < MAXPATHLEN) {
1421 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1423 if (NULL != ( slash = strrchr( path, '/' )) ) {
1426 /* XXX we must return NULL here and test in the caller */
1429 memcpy( pathbuf, path, l);
1434 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1435 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1441 /* -------------------------
1442 * Support inherited protection modes for AppleDouble files. The supplied
1443 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1444 * and that value is returned.
1446 char *ad_dir(const char *path)
1448 static char modebuf[ MAXPATHLEN + 1];
1451 * For a path with directories in it, remove the final component
1452 * (path or subdirectory name) to get the name we want to stat.
1453 * For a path which is just a filename, use "." instead.
1455 slash = strrchr( path, '/' );
1460 if (len >= MAXPATHLEN) {
1461 errno = ENAMETOOLONG;
1462 return NULL; /* can't do it */
1464 memcpy( modebuf, path, len );
1465 modebuf[len] = '\0';
1466 /* is last char a '/' ? */
1467 if (slash[1] == 0) {
1468 slash = modebuf+ len;
1470 while (modebuf < slash && slash[-1] == '/') {
1473 if (modebuf == slash) {
1477 while (modebuf < slash && *slash != '/') {
1480 if (modebuf == slash) {
1483 *slash = '\0'; /* remove pathname component */
1488 modebuf[0] = '.'; /* use current directory */
1493 int ad_setfuid(const uid_t id)
1499 /* ---------------- */
1500 uid_t ad_getfuid(void)
1506 stat path parent directory
1508 int ad_stat(const char *path, struct stat *stbuf)
1515 return lstat( p, stbuf );
1519 return access right of path parent directory
1521 int ad_mode( const char *path, mode_t mode)
1524 ad_mode_st(path, &mode, &stbuf);
1529 * Use mkdir() with mode bits taken from ad_mode().
1531 int ad_mkdir( const char *path, mode_t mode)
1537 LOG(log_debug, logtype_default, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1538 path, mode, getcwdpath());
1540 st_invalid = ad_mode_st(path, &mode, &stbuf);
1541 ret = mkdir( path, mode );
1542 if (ret || st_invalid)
1544 ad_chown(path, &stbuf);
1549 static void ad_init_func(struct adouble *ad)
1551 switch (ad->ad_vers) {
1553 ad->ad_ops = &ad_adouble;
1554 ad->ad_rfp = &ad->ad_resource_fork;
1555 ad->ad_mdp = &ad->ad_resource_fork;
1558 ad->ad_ops = &ad_adouble_ea;
1559 ad->ad_rfp = &ad->ad_resource_fork;
1560 ad->ad_mdp = &ad->ad_data_fork;
1563 AFP_PANIC("ad_init: unknown AD version");
1567 ad_data_fileno(ad) = -1;
1568 ad_reso_fileno(ad) = -1;
1569 ad_meta_fileno(ad) = -1;
1570 ad->ad_refcount = 1;
1574 void ad_init_old(struct adouble *ad, int flags, int options)
1576 memset(ad, 0, sizeof(struct adouble));
1577 ad->ad_vers = flags;
1578 ad->ad_options = options;
1582 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1584 memset(ad, 0, sizeof(struct adouble));
1585 ad->ad_vers = vol->v_adouble;
1586 ad->ad_options = vol->v_ad_options;
1591 * Open data-, metadata(header)- or ressource fork
1593 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1594 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1596 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1599 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1602 * Open a files data fork, metadata fork or ressource fork.
1604 * @param ad (rw) pointer to struct adouble
1605 * @param path (r) Path to file or directory
1606 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1607 * ADFLAGS_DF: open data fork
1608 * ADFLAGS_RF: open ressource fork
1609 * ADFLAGS_HF: open header (metadata) file
1610 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1611 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1612 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1614 * Access mode for the forks:
1615 * ADFLAGS_RDONLY: open read only
1616 * ADFLAGS_RDWR: open read write
1619 * ADFLAGS_CREATE: create if not existing
1620 * ADFLAGS_TRUNC: truncate
1623 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1624 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1625 * This basically results in the files being opened RW instead of RDONLY.
1626 * @param mode (r) mode used with O_CREATE
1628 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1629 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1630 * fds of the same file
1632 * @returns 0 on success, any other value indicates an error
1634 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1640 LOG(log_debug, logtype_default,
1641 "ad_open(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1642 fullpathname(path), adflags2logstr(adflags),
1643 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1644 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1645 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1647 if (adflags & ADFLAGS_CHECK_OF)
1648 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1649 adflags |= ADFLAGS_SETSHRMD;
1651 if (adflags & ADFLAGS_SETSHRMD)
1652 /* sharemode locks are stored in the data fork */
1653 adflags |= ADFLAGS_DF;
1655 if (ad->ad_vers == AD_VERSION2) {
1656 if (adflags & ADFLAGS_RF)
1657 adflags |= ADFLAGS_HF;
1658 if (adflags & ADFLAGS_NORF)
1659 adflags |= ADFLAGS_NOHF;
1662 if (ad->ad_inited != AD_INITED) {
1663 ad->ad_adflags = adflags;
1664 ad->ad_inited = AD_INITED;
1666 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1667 if (ad->ad_resource_fork.adf_refcount > 0)
1668 ad->ad_open_forks |= ATTRBIT_ROPEN;
1671 va_start(args, adflags);
1672 if (adflags & ADFLAGS_CREATE)
1673 mode = va_arg(args, mode_t);
1676 if (adflags & ADFLAGS_DF) {
1677 EC_ZERO( ad_open_df(path, adflags, mode, ad) );
1680 if (adflags & ADFLAGS_HF) {
1681 EC_ZERO( ad_open_hf(path, adflags, mode, ad) );
1684 if (adflags & ADFLAGS_RF) {
1685 EC_ZERO( ad_open_rf(path, adflags, mode, ad) );
1688 if (adflags & ADFLAGS_CHECK_OF) {
1689 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1693 LOG(log_debug, logtype_default,
1694 "ad_open(\"%s\"): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1695 fullpathname(path), ret,
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)
1717 int ret, err, oflags;
1719 /* Sanitize flags */
1720 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1722 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1725 LOG(log_error, logtype_default, "ad_metadata(%s): seteuid failed %s", name, strerror(errno));
1729 /* we are root open read only */
1730 ret = ad_open(adp, name, oflags);
1732 if ( seteuid(uid) < 0) {
1733 LOG(log_error, logtype_default, "ad_metadata: can't seteuid back");
1743 * @brief openat like wrapper for ad_metadata
1745 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1751 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1757 if (ad_metadata(name, flags, adp) < 0) {
1764 if (fchdir(cwdfd) != 0) {
1765 LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
1778 int ad_refresh(const char *path, struct adouble *ad)
1780 switch (ad->ad_vers) {
1782 if (ad_meta_fileno(ad) == -1)
1784 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1788 if (AD_META_OPEN(ad)) {
1789 if (ad_data_fileno(ad) == -1)
1791 // TODO: read meta EA
1794 if (AD_RSRC_OPEN(ad)) {
1795 if (ad_reso_fileno(ad) == -1)
1798 if (fstat(ad_reso_fileno(ad), &st) == -1)
1800 ad->ad_rlen = st.st_size;
1803 if (AD_META_OPEN(ad)) {
1804 if (ad_data_fileno(ad) == -1)
1806 // TODO: read meta EA
1808 if (AD_RSRC_OPEN(ad)) {
1809 if (ad_reso_fileno(ad) == -1)
1811 if (ad_header_read_osx(path, ad, NULL) < 0)
1815 return ad->ad_ops->ad_header_read(path, ad, NULL);
1824 int ad_openat(struct adouble *ad,
1825 int dirfd, /* dir fd openat like */
1835 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1839 va_start(args, adflags);
1840 if (adflags & ADFLAGS_CREATE)
1841 mode = va_arg(args, mode_t);
1844 EC_NEG1( ad_open(ad, path, adflags, mode) );
1847 if (fchdir(cwdfd) != 0) {
1848 AFP_PANIC("ad_openat: cant chdir back");
1859 int ad_convert(const char *path, const struct stat *sp, const struct vol *vol)
1863 int adflags = S_ISDIR(sp->st_mode) ? ADFLAGS_DIR : 0;
1865 if (!(vol->v_adouble == AD_VERSION_EA) || (vol->v_flags & AFPVOL_NOV2TOEACONV))
1868 EC_ZERO( ad_conv_v22ea_hf(path, sp, vol) );
1869 EC_ZERO( ad_conv_v22ea_rf(path, sp, vol) );
1871 EC_NULL( adpath = ad_path(path, adflags) );
1872 LOG(log_debug, logtype_default,"ad_conv_v22ea_hf(\"%s\"): deleting adouble:v2 file: \"%s\"",
1873 path, fullpathname(adpath));
1876 EC_ZERO_LOG( unlink(adpath) );
1883 /* build a resource fork mode from the data fork mode:
1884 * remove X mode and extend header to RW if R or W (W if R for locking),
1886 mode_t ad_hf_mode(mode_t mode)
1888 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1889 /* fnctl lock need write access */
1890 if ((mode & S_IRUSR))
1892 if ((mode & S_IRGRP))
1894 if ((mode & S_IROTH))
1897 /* if write mode set add read mode */
1898 if ((mode & S_IWUSR))
1900 if ((mode & S_IWGRP))
1902 if ((mode & S_IWOTH))