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>
49 #include <atalk/bstrlib.h>
50 #include <atalk/bstradd.h>
51 #include <atalk/compat.h>
52 #include <atalk/errchk.h>
53 #include <atalk/volume.h>
57 #define ADEDOFF_MAGIC (0)
58 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
59 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
60 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
62 /* initial lengths of some of the fields */
63 #define ADEDLEN_INIT 0
65 /* i stick things in a slightly different order than their eid order in
66 * case i ever want to separate RootInfo behaviour from the rest of the
70 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
71 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
72 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
73 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
74 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
75 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
76 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
77 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
78 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
79 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
80 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
81 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
82 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
85 #define ADEDOFF_FINDERI_EA (AD_HEADER_LEN + ADEID_NUM_EA * AD_ENTRY_LEN)
86 #define ADEDOFF_COMMENT_EA (ADEDOFF_FINDERI_EA + ADEDLEN_FINDERI)
87 #define ADEDOFF_FILEDATESI_EA (ADEDOFF_COMMENT_EA + ADEDLEN_COMMENT)
88 #define ADEDOFF_AFPFILEI_EA (ADEDOFF_FILEDATESI_EA + ADEDLEN_FILEDATESI)
89 #define ADEDOFF_PRIVID_EA (ADEDOFF_AFPFILEI_EA + ADEDLEN_AFPFILEI)
91 /* this is to prevent changing timezones from causing problems with
92 localtime volumes. the screw-up is 30 years. we use a delta of 5 years */
93 #define TIMEWARP_DELTA 157680000
96 uint32_t id, offset, len;
99 /* --------------------------- */
100 static uid_t default_uid = -1;
102 /* Forward declarations */
103 static int ad_mkrf(const char *path);
104 static int ad_header_read(const char *path, struct adouble *ad, struct stat *hst);
105 static int ad_header_upgrade(struct adouble *ad, const char *name);
107 static int ad_mkrf_ea(const char *path);
108 static int ad_header_read_ea(const char *path, struct adouble *ad, struct stat *hst);
109 static int ad_header_upgrade_ea(struct adouble *ad, const char *name);
110 static int ad_reso_size(const char *path, int adflags, struct adouble *ad);
111 static int ad_mkrf_osx(const char *path);
114 static struct adouble_fops ad_adouble = {
117 &ad_rebuild_adouble_header,
122 static struct adouble_fops ad_adouble_ea = {
130 &ad_rebuild_adouble_header,
132 &ad_header_upgrade_ea,
135 static struct adouble_fops ad_osx = {
138 &ad_rebuild_adouble_header,
143 static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
144 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
145 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
146 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
147 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
148 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
149 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
150 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
151 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
152 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
153 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
154 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
155 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
156 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
160 /* Using Extended Attributes */
161 static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
162 {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
163 {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
164 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
165 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
166 {ADEID_PRIVID, ADEDOFF_PRIVID_EA, ADEDLEN_INIT},
170 /* fallback for EAs */
171 static const struct entry entry_order_osx[ADEID_NUM_OSX +1] = {
172 {ADEID_FINDERI, ADEDOFF_FINDERI_OSX, ADEDLEN_FINDERI},
173 {ADEID_RFORK, ADEDOFF_RFORK_OSX, ADEDLEN_INIT},
177 #define ADFLAGS2LOGSTRBUFSIZ 128
178 const char *adflags2logstr(int adflags)
181 static char buf[ADFLAGS2LOGSTRBUFSIZ];
185 if (adflags & ADFLAGS_DF) {
186 strlcat(buf, "DF", ADFLAGS2LOGSTRBUFSIZ);
189 if (adflags & ADFLAGS_RF) {
191 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
192 strlcat(buf, "RF", ADFLAGS2LOGSTRBUFSIZ);
195 if (adflags & ADFLAGS_NORF) {
197 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
198 strlcat(buf, "NORF", ADFLAGS2LOGSTRBUFSIZ);
201 if (adflags & ADFLAGS_HF) {
203 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
204 strlcat(buf, "HF", ADFLAGS2LOGSTRBUFSIZ);
207 if (adflags & ADFLAGS_NOHF) {
209 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
210 strlcat(buf, "NOHF", ADFLAGS2LOGSTRBUFSIZ);
213 if (adflags & ADFLAGS_DIR) {
215 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
216 strlcat(buf, "DIR", ADFLAGS2LOGSTRBUFSIZ);
219 if (adflags & ADFLAGS_CHECK_OF) {
221 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
222 strlcat(buf, "OF", ADFLAGS2LOGSTRBUFSIZ);
225 if (adflags & ADFLAGS_SETSHRMD) {
227 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
228 strlcat(buf, "SHRMD", ADFLAGS2LOGSTRBUFSIZ);
231 if (adflags & ADFLAGS_RDWR) {
233 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
234 strlcat(buf, "O_RDWR", ADFLAGS2LOGSTRBUFSIZ);
237 if (adflags & ADFLAGS_RDONLY) {
239 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
240 strlcat(buf, "O_RDONLY", ADFLAGS2LOGSTRBUFSIZ);
243 if (adflags & ADFLAGS_CREATE) {
245 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
246 strlcat(buf, "O_CREAT", ADFLAGS2LOGSTRBUFSIZ);
249 if (adflags & ADFLAGS_EXCL) {
251 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
252 strlcat(buf, "O_EXCL", ADFLAGS2LOGSTRBUFSIZ);
255 if (adflags & ADFLAGS_TRUNC) {
257 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
258 strlcat(buf, "O_TRUNC", ADFLAGS2LOGSTRBUFSIZ);
265 static uint32_t get_eid(uint32_t eid)
270 return ADEID_PRIVDEV;
272 return ADEID_PRIVINO;
274 return ADEID_PRIVSYN;
281 /* ----------------------------------- */
282 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
284 const struct entry *eid;
288 LOG(log_debug, logtype_default, "new_ad_header(\"%s\")", path);
292 if (lstat(path, &st) != 0)
296 ad->ad_magic = AD_MAGIC;
297 ad->ad_version = ad->ad_vers & 0x0f0000;
298 if (!ad->ad_version) {
299 ad->ad_version = AD_VERSION;
302 memset(ad->ad_data, 0, sizeof(ad->ad_data));
304 if (ad->ad_vers == AD_VERSION2)
306 else if (ad->ad_vers == AD_VERSION_EA)
307 eid = entry_order_ea;
308 else if (ad->ad_vers == AD_VERSION2_OSX)
309 eid = entry_order_osx;
315 ad->ad_eid[eid->id].ade_off = eid->offset;
316 ad->ad_eid[eid->id].ade_len = eid->len;
320 /* put something sane in the directory finderinfo */
321 if (ad->ad_vers != AD_VERSION2_OSX) {
322 if ((adflags & ADFLAGS_DIR)) {
323 /* set default view */
324 ashort = htons(FINDERINFO_CLOSEDVIEW);
325 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
327 /* set default creator/type fields */
328 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
329 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
332 /* make things invisible */
333 if ((ad->ad_options & ADVOL_INVDOTS)
335 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
337 ashort = htons(ATTRBIT_INVISIBLE);
338 ad_setattr(ad, ashort);
339 ashort = htons(FINDERINFO_INVISIBLE);
340 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
343 /* put something sane in the date fields */
344 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
345 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
346 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
347 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
352 /* -------------------------------------
355 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
357 uint32_t eid, len, off;
360 /* now, read in the entry bits */
361 for (; nentries > 0; nentries-- ) {
362 memcpy(&eid, buf, sizeof( eid ));
363 eid = get_eid(ntohl(eid));
364 buf += sizeof( eid );
365 memcpy(&off, buf, sizeof( off ));
367 buf += sizeof( off );
368 memcpy(&len, buf, sizeof( len ));
370 buf += sizeof( len );
374 && off < sizeof(ad->ad_data)
375 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
376 ad->ad_eid[ eid ].ade_off = off;
377 ad->ad_eid[ eid ].ade_len = len;
378 } else if (!warning) {
380 LOG(log_warning, logtype_default, "parse_entries: bogus eid: %d", eid);
385 /* this reads enough of the header so that we can figure out all of
386 * the entry lengths and offsets. once that's done, we just read/mmap
387 * the rest of the header in.
389 * NOTE: we're assuming that the resource fork is kept at the end of
390 * the file. also, mmapping won't work for the hfs fs until it
391 * understands how to mmap header files. */
392 static int ad_header_read(const char *path _U_, struct adouble *ad, struct stat *hst)
394 char *buf = ad->ad_data;
400 /* read the header */
401 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ, 0)) < 0) {
404 if (header_len < AD_HEADER_LEN) {
409 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
410 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
411 ad->ad_magic = ntohl( ad->ad_magic );
412 ad->ad_version = ntohl( ad->ad_version );
414 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
415 LOG(log_error, logtype_default, "ad_open: can't parse AppleDouble header.");
420 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
421 nentries = ntohs( nentries );
423 /* read in all the entry headers. if we have more than the
424 * maximum, just hope that the rfork is specified early on. */
425 len = nentries*AD_ENTRY_LEN;
427 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
428 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
430 buf += AD_HEADER_LEN;
431 if (len > header_len - AD_HEADER_LEN) {
432 LOG(log_error, logtype_default, "ad_header_read: can't read entry info.");
437 /* figure out all of the entry offsets and lengths. if we aren't
438 * able to read a resource fork entry, bail. */
439 nentries = len / AD_ENTRY_LEN;
440 parse_entries(ad, buf, nentries);
441 if (!ad_getentryoff(ad, ADEID_RFORK)
442 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
444 LOG(log_error, logtype_default, "ad_header_read: problem with rfork entry offset.");
449 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
450 LOG(log_error, logtype_default, "ad_header_read: can't read in entries.");
457 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
458 return 1; /* fail silently */
462 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
467 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
468 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, struct stat *hst)
471 struct adouble adosx;
472 char *buf = &adosx.ad_data[0];
478 memset(buf, 0, sizeof(adosx.ad_data));
480 /* read the header */
481 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
483 if (header_len < AD_HEADER_LEN) {
488 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
489 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
490 adosx.ad_magic = ntohl(adosx.ad_magic);
491 adosx.ad_version = ntohl(adosx.ad_version);
493 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
494 LOG(log_error, logtype_afpd, "ad_header_read_osx: can't parse AppleDouble header");
499 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
500 nentries = ntohs(nentries);
501 len = nentries * AD_ENTRY_LEN;
503 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
504 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
506 buf += AD_HEADER_LEN;
507 if (len > header_len - AD_HEADER_LEN) {
508 LOG(log_error, logtype_afpd, "ad_header_read_osx: can't read entry info.");
513 nentries = len / AD_ENTRY_LEN;
514 parse_entries(&adosx, buf, nentries);
516 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
517 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
518 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
520 LOG(log_error, logtype_afpd, "ad_header_read_osx: problem with rfork entry offset.");
527 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
530 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
531 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
537 static int ad_header_read_ea(const char *path, struct adouble *ad, struct stat *hst _U_)
542 char *buf = ad->ad_data;
544 if (ad_meta_fileno(ad) != -1)
545 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
547 header_len = sys_lgetxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
548 if (header_len < 1) {
549 LOG(log_debug, logtype_default, "ad_header_read_ea: %s", strerror(errno));
553 if (header_len < AD_HEADER_LEN) {
554 LOG(log_error, logtype_default, "ad_header_read_ea: bogus AppleDouble header.");
559 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
560 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
562 ad->ad_magic = ntohl( ad->ad_magic );
563 ad->ad_version = ntohl( ad->ad_version );
565 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
566 LOG(log_error, logtype_default, "ad_header_read_ea: wrong magic or version");
571 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
572 nentries = ntohs( nentries );
574 /* Protect against bogus nentries */
575 len = nentries * AD_ENTRY_LEN;
576 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
577 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
578 if (len > header_len - AD_HEADER_LEN) {
579 LOG(log_error, logtype_default, "ad_header_read_ea: can't read entry info.");
583 nentries = len / AD_ENTRY_LEN;
585 /* Now parse entries */
586 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
592 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
595 * path: "/path/.AppleDouble/file"
596 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
598 static int ad_mkrf(const char *path)
602 * Probably .AppleDouble doesn't exist, try to mkdir it.
604 if (NULL == ( slash = strrchr( path, '/' )) ) {
609 if ( ad_mkdir( path, 0777 ) < 0 ) {
616 static int ad_mkrf_ea(const char *path _U_)
618 AFP_PANIC("ad_mkrf_ea: dont use");
622 static int ad_mkrf_osx(const char *path _U_)
628 if we are root change path user/ group
629 It can be a native function for BSD cf. FAQ.Q10
630 path: pathname to chown
631 stbuf: parent directory inode
633 use fstat and fchown or lchown with linux?
635 #define EMULATE_SUIDDIR
637 static int ad_chown(const char *path, struct stat *stbuf)
640 #ifdef EMULATE_SUIDDIR
643 if (default_uid != (uid_t)-1) {
644 /* we are root (admin) */
645 id = (default_uid)?default_uid:stbuf->st_uid;
646 ret = lchown( path, id, stbuf->st_gid );
652 #define DEFMASK 07700 /* be conservative */
655 return access right and inode of path parent directory
657 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
662 if (ad_stat(path, stbuf) != 0) {
666 *mode &= stbuf->st_mode;
670 /* --------------------------- */
671 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
676 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
678 AFP_PANIC("ad_header_upgrade_ea: dont use");
683 * Error handling for adouble header(=metadata) file open error
685 * We're called because opening ADFLAGS_HF caused an error.
686 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
687 * 2. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
688 * ought to close it before returning with an error condition.
690 static int ad_error(struct adouble *ad, int adflags)
693 if (adflags & ADFLAGS_NOHF) { /* 1 */
696 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 2 */
697 ad_close( ad, ADFLAGS_DF );
704 * Map ADFLAGS to open() flags
706 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
707 * @param adflags (r) flags from ad_open(..., adflags, ...)
708 * @returns mapped flags suitable for calling open()
710 static int ad2openflags(int adfile, int adflags)
714 if (adflags & ADFLAGS_RDWR)
716 if (adflags & ADFLAGS_RDONLY) {
717 if ((adfile & ADFLAGS_DF) && (adflags & ADFLAGS_SETSHRMD))
722 if (adflags & ADFLAGS_CREATE)
724 if (adflags & ADFLAGS_EXCL)
726 if (adflags & ADFLAGS_TRUNC)
732 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
741 LOG(log_debug, logtype_default,
742 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
743 fullpathname(path), adflags2logstr(adflags),
744 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
745 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
746 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
748 if (ad_data_fileno(ad) != -1) {
749 /* the file is already open, but we want write access: */
750 if ((adflags & ADFLAGS_RDWR)
751 /* and it was denied the first time: */
752 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
756 /* it's not new anymore */
757 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
758 ad->ad_data_fork.adf_refcount++;
762 oflags = O_NOFOLLOW | ad2openflags(ADFLAGS_DF, adflags);
765 if ((adflags & ADFLAGS_CREATE)) {
766 st_invalid = ad_mode_st(path, &admode, &st_dir);
767 if ((ad->ad_options & ADVOL_UNIXPRIV))
771 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
773 if (ad->ad_data_fork.adf_fd == -1) {
778 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
781 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
785 case OPEN_NOFOLLOW_ERRNO:
786 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
787 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
788 free(ad->ad_data_fork.adf_syml);
791 ad->ad_data_fork.adf_syml[lsz] = 0;
792 ad->ad_data_fork.adf_fd = -2; /* -2 means its a symlink */
800 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
802 ad->ad_data_fork.adf_flags = oflags;
803 adf_lock_init(&ad->ad_data_fork);
804 ad->ad_data_fork.adf_refcount++;
807 LOG(log_debug, logtype_default,
808 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
809 fullpathname(path), adflags2logstr(adflags), ret,
810 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
811 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
812 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
816 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
821 struct stat *pst = NULL;
823 int oflags, nocreatflags, opened = 0;
827 LOG(log_debug, logtype_default,
828 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
829 fullpathname(path), adflags2logstr(adflags),
830 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
831 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
832 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
834 if (ad_meta_fileno(ad) != -1) {
835 /* the file is already open, but we want write access: */
836 if ((adflags & ADFLAGS_RDWR) &&
837 /* and it was already denied: */
838 (ad->ad_mdp->adf_flags & O_RDONLY)) {
842 ad_refresh(path, ad);
843 /* it's not new anymore */
844 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
845 ad->ad_mdp->adf_refcount++;
849 ad_p = ad->ad_ops->ad_path(path, adflags);
850 oflags = O_NOFOLLOW | ad2openflags(ADFLAGS_HF, adflags);
851 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
853 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
855 if (ad_meta_fileno(ad) != -1) {
856 ad->ad_mdp->adf_flags = nocreatflags;
862 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
863 nocreatflags &= ~O_RDWR;
864 nocreatflags |= O_RDONLY;
865 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
866 ad->ad_mdp->adf_flags = nocreatflags;
871 if (!(oflags & O_CREAT))
874 * We're expecting to create a new adouble header file here
876 LOG(log_debug, logtype_default, "ad_open(\"%s\"): creating adouble file",
880 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
881 if ((ad->ad_options & ADVOL_UNIXPRIV))
883 admode = ad_hf_mode(admode);
884 if (errno == ENOENT) {
885 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
887 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
888 if ((ad->ad_options & ADVOL_UNIXPRIV))
890 admode = ad_hf_mode(admode);
893 /* retry with O_CREAT */
894 EC_NEG1_LOG( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
895 ad->ad_mdp->adf_flags = oflags;
896 /* just created, set owner if admin owner (root) */
898 ad_chown(ad_p, &st_dir);
905 /* Now we've got a new opened fd, we need to check that in the error case */
908 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
909 /* check for 0 length files, treat them as new. */
910 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
911 if (st_meta.st_size == 0)
912 ad->ad_mdp->adf_flags |= O_TRUNC;
914 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
919 adf_lock_init(ad->ad_mdp);
920 ad->ad_mdp->adf_refcount = 1;
922 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
923 /* This is a new adouble header file, create it */
924 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
927 /* Read the adouble header in and parse it.*/
928 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
932 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
933 close(ad_meta_fileno(ad));
934 ad_meta_fileno(ad) = -1;
935 ad->ad_mdp->adf_refcount = 0;
937 LOG(log_debug, logtype_default,
938 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
939 fullpathname(path), adflags2logstr(adflags), ret,
940 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
941 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
942 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
946 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
953 LOG(log_debug, logtype_default,
954 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
955 fullpathname(path), adflags2logstr(adflags),
956 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
957 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
958 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
960 oflags = O_NOFOLLOW | (ad2openflags(ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC));
962 if (ad_meta_fileno(ad) == -2)
966 if (ad_meta_fileno(ad) != -1) {
967 /* the file is already open, but we want write access: */
968 if ((oflags & O_RDWR) &&
969 /* and it was already denied: */
970 (ad->ad_mdp->adf_flags & O_RDONLY)) {
971 LOG(log_error, logtype_default, "ad_open_hf_ea(%s): rw request for ro file: %s",
972 fullpathname(path), strerror(errno));
976 /* it's not new anymore */
977 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
979 if (oflags & O_RDWR) {
980 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
981 if (adflags & ADFLAGS_DIR)
982 /* For directories we open the directory RDONYL so we can later fchdir() */
983 oflags = (oflags & ~O_RDWR) | O_RDONLY;
984 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
985 EC_NEG1_LOG(ad_meta_fileno(ad) = open(path, oflags));
987 ad->ad_mdp->adf_flags = oflags;
991 /* Read the adouble header in and parse it.*/
992 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
993 if (!(adflags & ADFLAGS_CREATE)) {
994 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
999 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1001 /* It doesnt exist, EPERM or another error */
1002 if (!(errno == ENOATTR || errno == ENOENT)) {
1003 LOG(log_error, logtype_default, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1008 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1009 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1011 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1014 ad->ad_mdp->adf_refcount++;
1015 (void)ad_reso_size(path, adflags, ad);
1018 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1019 close(ad_meta_fileno(ad));
1020 ad_meta_fileno(ad) = -1;
1021 ad->ad_mdp->adf_refcount = 0;
1023 LOG(log_debug, logtype_default,
1024 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1025 fullpathname(path), adflags2logstr(adflags), ret,
1026 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1027 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1028 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1033 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1037 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1040 switch (ad->ad_vers) {
1042 ret = ad_open_hf_v2(path, adflags, mode, ad);
1045 ret = ad_open_hf_ea(path, adflags, mode, ad);
1053 ret = ad_error(ad, adflags);
1059 * Get resofork length for adouble:ea
1061 static int ad_reso_size(const char *path, int adflags, struct adouble *ad)
1066 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\")", path);
1071 if (ad_reso_fileno(ad) != -1) {
1072 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1073 ad->ad_rlen = st.st_size;
1074 } else if (ad_meta_fileno(ad) != -1) {
1075 EC_NEG1( easz = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0) );
1083 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags));
1084 EC_ZERO( lstat(rfpath, &st));
1085 if (st.st_size > ADEDOFF_RFORK_OSX)
1086 ad->ad_rlen = st.st_size - ADEDOFF_RFORK_OSX;
1091 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\"): size: %zd", path, ad->ad_rlen);
1100 * Open ressource fork
1102 * Only for adouble:ea, a nullop otherwise because adouble:v2 has the ressource fork as part
1103 * of the adouble file which is openend by ADFLAGS_HF.
1105 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1110 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1117 if (ad->ad_vers != AD_VERSION_EA)
1120 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1122 oflags = O_NOFOLLOW | (ad2openflags(ADFLAGS_HF, adflags) & ~O_CREAT);
1124 if (ad_reso_fileno(ad) != -1) {
1125 /* the file is already open, but we want write access: */
1126 if ((oflags & O_RDWR)
1127 /* and it was already denied: */
1128 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1132 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1133 ad->ad_rfp->adf_refcount++;
1134 EC_NEG1_LOG( ad_reso_size(path, adflags, ad));
1138 if (ad_meta_fileno(ad) == -1)
1140 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1141 if (!(adflags & ADFLAGS_CREATE)) {
1146 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1147 AD_EA_RESO, oflags, 0666) );
1150 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1151 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1152 if (!(adflags & ADFLAGS_CREATE))
1155 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1156 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1161 ad->ad_rfp->adf_refcount = 1;
1162 ad->ad_rfp->adf_flags = oflags;
1165 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1166 if (ad->ad_rfp->adf_flags & O_CREAT) {
1167 /* This is a new adouble header file, create it */
1168 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1170 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1174 /* Read the adouble header */
1175 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1177 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1181 (void)ad_reso_size(path, adflags, ad);
1185 if (opened && (ad_reso_fileno(ad) != -1)) {
1186 close(ad_reso_fileno(ad));
1187 ad_reso_fileno(ad) = -1;
1188 ad->ad_rfp->adf_refcount = 0;
1190 if (adflags & ADFLAGS_NORF) {
1194 (void)ad_close(ad, closeflags);
1200 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1205 /***********************************************************************************
1207 ********************************************************************************* */
1209 off_t ad_getentryoff(const struct adouble *ad, int eid)
1211 if (ad->ad_vers == AD_VERSION2)
1212 return ad->ad_eid[ADEID_RFORK].ade_off;
1214 if (eid == ADEID_DFORK) {
1216 } else if (eid == ADEID_RFORK) {
1220 return ADEDOFF_RFORK_OSX;
1223 return ad->ad_eid[eid].ade_off;
1227 const char *ad_path_ea( const char *path, int adflags _U_)
1232 const char *ad_path_osx(const char *path, int adflags _U_)
1234 static char pathbuf[ MAXPATHLEN + 1];
1235 char c, *slash, buf[MAXPATHLEN + 1];
1237 if (!strcmp(path,".")) {
1239 getcwd(buf, MAXPATHLEN);
1242 strlcpy(buf, path, MAXPATHLEN +1);
1244 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1247 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1250 pathbuf[ 0 ] = '\0';
1253 strlcat( pathbuf, "._", MAXPATHLEN +1);
1254 strlcat( pathbuf, slash, MAXPATHLEN +1);
1259 * Put the .AppleDouble where it needs to be:
1261 * / a/.AppleDouble/b
1263 * \ b/.AppleDouble/.Parent
1265 * FIXME: should do something for pathname > MAXPATHLEN
1267 const char *ad_path( const char *path, int adflags)
1269 static char pathbuf[ MAXPATHLEN + 1];
1273 if ( adflags & ADFLAGS_DIR ) {
1274 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1276 if ( l && l < MAXPATHLEN) {
1279 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1281 if (NULL != ( slash = strrchr( path, '/' )) ) {
1284 /* XXX we must return NULL here and test in the caller */
1287 memcpy( pathbuf, path, l);
1292 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1293 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1299 /* -------------------------
1300 * Support inherited protection modes for AppleDouble files. The supplied
1301 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1302 * and that value is returned.
1304 char *ad_dir(const char *path)
1306 static char modebuf[ MAXPATHLEN + 1];
1309 * For a path with directories in it, remove the final component
1310 * (path or subdirectory name) to get the name we want to stat.
1311 * For a path which is just a filename, use "." instead.
1313 slash = strrchr( path, '/' );
1318 if (len >= MAXPATHLEN) {
1319 errno = ENAMETOOLONG;
1320 return NULL; /* can't do it */
1322 memcpy( modebuf, path, len );
1323 modebuf[len] = '\0';
1324 /* is last char a '/' ? */
1325 if (slash[1] == 0) {
1326 slash = modebuf+ len;
1328 while (modebuf < slash && slash[-1] == '/') {
1331 if (modebuf == slash) {
1335 while (modebuf < slash && *slash != '/') {
1338 if (modebuf == slash) {
1341 *slash = '\0'; /* remove pathname component */
1346 modebuf[0] = '.'; /* use current directory */
1351 int ad_setfuid(const uid_t id)
1357 /* ---------------- */
1358 uid_t ad_getfuid(void)
1364 stat path parent directory
1366 int ad_stat(const char *path, struct stat *stbuf)
1373 return lstat( p, stbuf );
1377 return access right of path parent directory
1379 int ad_mode( const char *path, mode_t mode)
1382 ad_mode_st(path, &mode, &stbuf);
1387 * Use mkdir() with mode bits taken from ad_mode().
1389 int ad_mkdir( const char *path, mode_t mode)
1395 LOG(log_debug, logtype_default, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1396 path, mode, getcwdpath());
1398 st_invalid = ad_mode_st(path, &mode, &stbuf);
1399 ret = mkdir( path, mode );
1400 if (ret || st_invalid)
1402 ad_chown(path, &stbuf);
1407 static void ad_init_func(struct adouble *ad)
1409 switch (ad->ad_vers) {
1411 ad->ad_ops = &ad_adouble;
1412 ad->ad_rfp = &ad->ad_resource_fork;
1413 ad->ad_mdp = &ad->ad_resource_fork;
1416 ad->ad_ops = &ad_adouble_ea;
1417 ad->ad_rfp = &ad->ad_resource_fork;
1418 ad->ad_mdp = &ad->ad_data_fork;
1421 AFP_PANIC("ad_init: unknown AD version");
1425 ad_data_fileno(ad) = -1;
1426 ad_reso_fileno(ad) = -1;
1427 ad_meta_fileno(ad) = -1;
1428 ad->ad_refcount = 1;
1432 void ad_init_old(struct adouble *ad, int flags, int options)
1434 memset(ad, 0, sizeof(struct adouble));
1435 ad->ad_vers = flags;
1436 ad->ad_options = options;
1440 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1442 memset(ad, 0, sizeof(struct adouble));
1443 ad->ad_vers = vol->v_adouble;
1444 ad->ad_options = vol->v_ad_options;
1449 * Open data-, metadata(header)- or ressource fork
1451 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1452 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1454 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1457 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1460 * Open a files data fork, metadata fork or ressource fork.
1462 * @param ad (rw) pointer to struct adouble
1463 * @param path (r) Path to file or directory
1464 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1465 * ADFLAGS_DF: open data fork
1466 * ADFLAGS_RF: open ressource fork
1467 * ADFLAGS_HF: open header (metadata) file
1468 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1469 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1470 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1472 * Access mode for the forks:
1473 * ADFLAGS_RDONLY: open read only
1474 * ADFLAGS_RDWR: open read write
1477 * ADFLAGS_CREATE: create if not existing
1478 * ADFLAGS_TRUNC: truncate
1481 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1482 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1483 * This basically results in the files being opened RW instead of RDONLY.
1484 * @param mode (r) mode used with O_CREATE
1486 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1487 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1488 * fds of the same file
1490 * @returns 0 on success, any other value indicates an error
1492 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1498 LOG(log_debug, logtype_default,
1499 "ad_open(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1500 fullpathname(path), adflags2logstr(adflags),
1501 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1502 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1503 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1505 if (adflags & ADFLAGS_CHECK_OF)
1506 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1507 adflags |= ADFLAGS_SETSHRMD;
1509 if ((ad->ad_vers == AD_VERSION2) && (adflags & ADFLAGS_SETSHRMD)) {
1510 /* sharemode locks are stored in the data fork, adouble:v2 needs this extra handling */
1511 adflags |= ADFLAGS_DF;
1514 if ((ad->ad_vers == AD_VERSION2) && (adflags & ADFLAGS_RF)) {
1515 adflags |= ADFLAGS_HF;
1516 if (adflags & ADFLAGS_NORF)
1517 adflags |= ADFLAGS_NOHF;
1520 if (ad->ad_inited != AD_INITED) {
1521 ad->ad_adflags = adflags;
1522 ad->ad_inited = AD_INITED;
1524 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1525 if (ad->ad_resource_fork.adf_refcount > 0)
1526 ad->ad_open_forks |= ATTRBIT_ROPEN;
1529 va_start(args, adflags);
1530 if (adflags & ADFLAGS_CREATE)
1531 mode = va_arg(args, mode_t);
1534 if (adflags & ADFLAGS_DF) {
1535 EC_ZERO( ad_open_df(path, adflags, mode, ad) );
1538 if (adflags & ADFLAGS_HF) {
1539 EC_ZERO( ad_open_hf(path, adflags, mode, ad) );
1542 if (adflags & ADFLAGS_RF) {
1543 EC_ZERO( ad_open_rf(path, adflags, mode, ad) );
1546 if (adflags & ADFLAGS_CHECK_OF) {
1547 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1551 LOG(log_debug, logtype_default,
1552 "ad_open(\"%s\"): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1553 fullpathname(path), ret,
1554 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1555 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1556 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1562 * @brief open metadata, possibly as root
1564 * Return only metadata but try very hard ie at first try as user, then try as root.
1566 * @param name name of file/dir
1567 * @param flags ADFLAGS_DIR: name is a directory \n
1568 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1570 * @param adp pointer to struct adouble
1572 int ad_metadata(const char *name, int flags, struct adouble *adp)
1575 int ret, err, oflags;
1577 /* Sanitize flags */
1578 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1580 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1583 LOG(log_error, logtype_default, "ad_metadata(%s): seteuid failed %s", name, strerror(errno));
1587 /* we are root open read only */
1588 ret = ad_open(adp, name, oflags);
1590 if ( seteuid(uid) < 0) {
1591 LOG(log_error, logtype_default, "ad_metadata: can't seteuid back");
1601 * @brief openat like wrapper for ad_metadata
1603 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1609 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1615 if (ad_metadata(name, flags, adp) < 0) {
1622 if (fchdir(cwdfd) != 0) {
1623 LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
1636 int ad_refresh(const char *path, struct adouble *ad)
1638 switch (ad->ad_vers) {
1640 if (ad_meta_fileno(ad) == -1)
1642 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1646 if (AD_META_OPEN(ad)) {
1647 if (ad_data_fileno(ad) == -1)
1649 // TODO: read meta EA
1652 if (AD_RSRC_OPEN(ad)) {
1653 if (ad_reso_fileno(ad) == -1)
1656 if (fstat(ad_reso_fileno(ad), &st) == -1)
1658 ad->ad_rlen = st.st_size;
1661 if (AD_META_OPEN(ad)) {
1662 if (ad_data_fileno(ad) == -1)
1664 // TODO: read meta EA
1666 if (AD_RSRC_OPEN(ad)) {
1667 if (ad_reso_fileno(ad) == -1)
1669 if (ad_header_read_osx(path, ad, NULL) < 0)
1673 return ad->ad_ops->ad_header_read(path, ad, NULL);
1682 int ad_openat(struct adouble *ad,
1683 int dirfd, /* dir fd openat like */
1693 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1697 va_start(args, adflags);
1698 if (adflags & ADFLAGS_CREATE)
1699 mode = va_arg(args, mode_t);
1702 EC_NEG1( ad_open(ad, path, adflags, mode) );
1705 if (fchdir(cwdfd) != 0) {
1706 AFP_PANIC("ad_openat: cant chdir back");