2 * Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
3 * Copyright (c) 1990,1991 Regents of The University of Michigan.
4 * Copyright (c) 2010 Frank Lahm
8 * Permission to use, copy, modify, and distribute this software and
9 * its documentation for any purpose and without fee is hereby granted,
10 * provided that the above copyright notice appears in all copies and
11 * that both that copyright notice and this permission notice appear
12 * in supporting documentation, and that the name of The University
13 * of Michigan not be used in advertising or publicity pertaining to
14 * distribution of the software without specific, written prior
15 * permission. This software is supplied as is without expressed or
16 * implied warranties of any kind.
18 * Research Systems Unix Group
19 * The University of Michigan
21 * 535 W. William Street
24 * netatalk@itd.umich.edu
30 * Part of Netatalk's AppleDouble implementatation
31 * @sa include/atalk/adouble.h
36 #endif /* HAVE_CONFIG_H */
39 #include <sys/param.h>
43 #include <arpa/inet.h>
45 #include <atalk/logger.h>
46 #include <atalk/adouble.h>
47 #include <atalk/util.h>
48 #include <atalk/unix.h>
50 #include <atalk/bstrlib.h>
51 #include <atalk/bstradd.h>
52 #include <atalk/compat.h>
53 #include <atalk/errchk.h>
54 #include <atalk/volume.h>
58 #define ADEDOFF_MAGIC (0)
59 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
60 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
61 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
63 /* initial lengths of some of the fields */
64 #define ADEDLEN_INIT 0
66 /* i stick things in a slightly different order than their eid order in
67 * case i ever want to separate RootInfo behaviour from the rest of the
71 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
72 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
73 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
74 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
75 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
76 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
77 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
78 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
79 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
80 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
81 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
82 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
83 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
86 #define ADEDOFF_FINDERI_EA (AD_HEADER_LEN + ADEID_NUM_EA * AD_ENTRY_LEN)
87 #define ADEDOFF_COMMENT_EA (ADEDOFF_FINDERI_EA + ADEDLEN_FINDERI)
88 #define ADEDOFF_FILEDATESI_EA (ADEDOFF_COMMENT_EA + ADEDLEN_COMMENT)
89 #define ADEDOFF_AFPFILEI_EA (ADEDOFF_FILEDATESI_EA + ADEDLEN_FILEDATESI)
90 #define ADEDOFF_PRIVDEV_EA (ADEDOFF_AFPFILEI_EA + ADEDLEN_AFPFILEI)
91 #define ADEDOFF_PRIVINO_EA (ADEDOFF_PRIVDEV_EA + ADEDLEN_PRIVDEV)
92 #define ADEDOFF_PRIVSYN_EA (ADEDOFF_PRIVINO_EA + ADEDLEN_PRIVINO)
93 #define ADEDOFF_PRIVID_EA (ADEDOFF_PRIVSYN_EA + ADEDLEN_PRIVSYN)
95 /* this is to prevent changing timezones from causing problems with
96 localtime volumes. the screw-up is 30 years. we use a delta of 5 years */
97 #define TIMEWARP_DELTA 157680000
100 uint32_t id, offset, len;
103 /* --------------------------- */
104 static uid_t default_uid = -1;
106 /* Forward declarations */
107 static int ad_mkrf(const char *path);
108 static int ad_header_read(const char *path, struct adouble *ad, const struct stat *hst);
109 static int ad_header_upgrade(struct adouble *ad, const char *name);
111 static int ad_mkrf_ea(const char *path);
112 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst);
113 static int ad_header_upgrade_ea(struct adouble *ad, const char *name);
114 static int ad_reso_size(const char *path, int adflags, struct adouble *ad);
115 static int ad_mkrf_osx(const char *path);
118 static struct adouble_fops ad_adouble = {
121 &ad_rebuild_adouble_header_v2,
126 static struct adouble_fops ad_adouble_ea = {
134 &ad_rebuild_adouble_header_ea,
136 &ad_header_upgrade_ea,
139 static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
140 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
141 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
142 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
143 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
144 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
145 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
146 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
147 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
148 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
149 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
150 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
151 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
152 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
156 /* Using Extended Attributes */
157 static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
158 {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
159 {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
160 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
161 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
162 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV_EA, ADEDLEN_INIT},
163 {ADEID_PRIVINO, ADEDOFF_PRIVINO_EA, ADEDLEN_INIT},
164 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN_EA, ADEDLEN_INIT},
165 {ADEID_PRIVID, ADEDOFF_PRIVID_EA, ADEDLEN_INIT},
169 /* fallback for EAs */
170 static const struct entry entry_order_osx[ADEID_NUM_OSX +1] = {
171 {ADEID_FINDERI, ADEDOFF_FINDERI_OSX, ADEDLEN_FINDERI},
172 {ADEID_RFORK, ADEDOFF_RFORK_OSX, ADEDLEN_INIT},
176 #define ADFLAGS2LOGSTRBUFSIZ 128
177 const char *adflags2logstr(int adflags)
180 static char buf[ADFLAGS2LOGSTRBUFSIZ];
184 if (adflags & ADFLAGS_DF) {
185 strlcat(buf, "DF", ADFLAGS2LOGSTRBUFSIZ);
188 if (adflags & ADFLAGS_RF) {
190 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
191 strlcat(buf, "RF", ADFLAGS2LOGSTRBUFSIZ);
194 if (adflags & ADFLAGS_NORF) {
196 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
197 strlcat(buf, "NORF", ADFLAGS2LOGSTRBUFSIZ);
200 if (adflags & ADFLAGS_HF) {
202 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
203 strlcat(buf, "HF", ADFLAGS2LOGSTRBUFSIZ);
206 if (adflags & ADFLAGS_NOHF) {
208 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
209 strlcat(buf, "NOHF", ADFLAGS2LOGSTRBUFSIZ);
212 if (adflags & ADFLAGS_DIR) {
214 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
215 strlcat(buf, "DIR", ADFLAGS2LOGSTRBUFSIZ);
218 if (adflags & ADFLAGS_CHECK_OF) {
220 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
221 strlcat(buf, "OF", ADFLAGS2LOGSTRBUFSIZ);
224 if (adflags & ADFLAGS_SETSHRMD) {
226 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
227 strlcat(buf, "SHRMD", ADFLAGS2LOGSTRBUFSIZ);
230 if (adflags & ADFLAGS_RDWR) {
232 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
233 strlcat(buf, "O_RDWR", ADFLAGS2LOGSTRBUFSIZ);
236 if (adflags & ADFLAGS_RDONLY) {
238 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
239 strlcat(buf, "O_RDONLY", ADFLAGS2LOGSTRBUFSIZ);
242 if (adflags & ADFLAGS_CREATE) {
244 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
245 strlcat(buf, "O_CREAT", ADFLAGS2LOGSTRBUFSIZ);
248 if (adflags & ADFLAGS_EXCL) {
250 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
251 strlcat(buf, "O_EXCL", ADFLAGS2LOGSTRBUFSIZ);
254 if (adflags & ADFLAGS_TRUNC) {
256 strlcat(buf, "|", ADFLAGS2LOGSTRBUFSIZ);
257 strlcat(buf, "O_TRUNC", ADFLAGS2LOGSTRBUFSIZ);
264 #define OPENFLAGS2LOGSTRBUFSIZ 128
265 const char *openflags2logstr(int oflags)
268 static char buf[OPENFLAGS2LOGSTRBUFSIZ];
272 if ((oflags & O_RDONLY) || (oflags == O_RDONLY)) {
273 strlcat(buf, "O_RDONLY", OPENFLAGS2LOGSTRBUFSIZ);
276 if (oflags & O_RDWR) {
278 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
279 strlcat(buf, "O_RDWR", OPENFLAGS2LOGSTRBUFSIZ);
282 if (oflags & O_CREAT) {
284 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
285 strlcat(buf, "O_CREAT", OPENFLAGS2LOGSTRBUFSIZ);
288 if (oflags & O_TRUNC) {
290 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
291 strlcat(buf, "O_TRUNC", OPENFLAGS2LOGSTRBUFSIZ);
294 if (oflags & O_EXCL) {
296 strlcat(buf, "|", OPENFLAGS2LOGSTRBUFSIZ);
297 strlcat(buf, "O_EXCL", OPENFLAGS2LOGSTRBUFSIZ);
303 static uint32_t get_eid(uint32_t eid)
308 return ADEID_PRIVDEV;
310 return ADEID_PRIVINO;
312 return ADEID_PRIVSYN;
319 /* ----------------------------------- */
320 static int new_ad_header(struct adouble *ad, const char *path, struct stat *stp, int adflags)
322 const struct entry *eid;
326 LOG(log_debug, logtype_default, "new_ad_header(\"%s\")", path);
330 if (lstat(path, &st) != 0)
334 ad->ad_magic = AD_MAGIC;
335 ad->ad_version = ad->ad_vers & 0x0f0000;
336 if (!ad->ad_version) {
337 ad->ad_version = AD_VERSION;
340 memset(ad->ad_data, 0, sizeof(ad->ad_data));
342 if (ad->ad_vers == AD_VERSION2)
344 else if (ad->ad_vers == AD_VERSION_EA)
345 eid = entry_order_ea;
346 else if (ad->ad_vers == AD_VERSION2_OSX)
347 eid = entry_order_osx;
353 ad->ad_eid[eid->id].ade_off = eid->offset;
354 ad->ad_eid[eid->id].ade_len = eid->len;
358 /* put something sane in the directory finderinfo */
359 if (ad->ad_vers != AD_VERSION2_OSX) {
360 if ((adflags & ADFLAGS_DIR)) {
361 /* set default view */
362 ashort = htons(FINDERINFO_CLOSEDVIEW);
363 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
365 /* set default creator/type fields */
366 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
367 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
370 /* make things invisible */
371 if ((ad->ad_options & ADVOL_INVDOTS)
373 && !((adflags & ADFLAGS_DIR) && (path[1] == 0))
375 ashort = htons(ATTRBIT_INVISIBLE);
376 ad_setattr(ad, ashort);
377 ashort = htons(FINDERINFO_INVISIBLE);
378 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
381 /* put something sane in the date fields */
382 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, stp->st_mtime);
383 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, stp->st_mtime);
384 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, stp->st_mtime);
385 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
390 /* -------------------------------------
393 static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
395 uint32_t eid, len, off;
398 /* now, read in the entry bits */
399 for (; nentries > 0; nentries-- ) {
400 memcpy(&eid, buf, sizeof( eid ));
401 eid = get_eid(ntohl(eid));
402 buf += sizeof( eid );
403 memcpy(&off, buf, sizeof( off ));
405 buf += sizeof( off );
406 memcpy(&len, buf, sizeof( len ));
408 buf += sizeof( len );
412 && off < sizeof(ad->ad_data)
413 && (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
414 ad->ad_eid[ eid ].ade_off = off;
415 ad->ad_eid[ eid ].ade_len = len;
416 } else if (!warning) {
418 LOG(log_warning, logtype_default, "parse_entries: bogus eid: %d", eid);
423 /* this reads enough of the header so that we can figure out all of
424 * the entry lengths and offsets. once that's done, we just read/mmap
425 * the rest of the header in.
427 * NOTE: we're assuming that the resource fork is kept at the end of
428 * the file. also, mmapping won't work for the hfs fs until it
429 * understands how to mmap header files. */
430 static int ad_header_read(const char *path _U_, struct adouble *ad, const struct stat *hst)
432 char *buf = ad->ad_data;
438 /* read the header */
439 if ((header_len = adf_pread( ad->ad_mdp, buf, AD_DATASZ2, 0)) < 0) {
442 if (header_len < AD_HEADER_LEN) {
447 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
448 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
449 ad->ad_magic = ntohl( ad->ad_magic );
450 ad->ad_version = ntohl( ad->ad_version );
452 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
453 LOG(log_error, logtype_default, "ad_open: can't parse AppleDouble header.");
458 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
459 nentries = ntohs( nentries );
461 /* read in all the entry headers. if we have more than the
462 * maximum, just hope that the rfork is specified early on. */
463 len = nentries*AD_ENTRY_LEN;
465 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
466 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
468 buf += AD_HEADER_LEN;
469 if (len > header_len - AD_HEADER_LEN) {
470 LOG(log_error, logtype_default, "ad_header_read: can't read entry info.");
475 /* figure out all of the entry offsets and lengths. if we aren't
476 * able to read a resource fork entry, bail. */
477 nentries = len / AD_ENTRY_LEN;
478 parse_entries(ad, buf, nentries);
479 if (!ad_getentryoff(ad, ADEID_RFORK)
480 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
482 LOG(log_error, logtype_default, "ad_header_read: problem with rfork entry offset.");
487 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
488 LOG(log_error, logtype_default, "ad_header_read: can't read in entries.");
495 if (fstat(ad->ad_mdp->adf_fd, &st) < 0) {
496 return 1; /* fail silently */
500 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
505 /* error here means it's not ad ._ adouble:osx file and thus we return 1 */
506 int ad_valid_header_osx(const char *path)
510 struct adouble adosx;
511 char *buf = &adosx.ad_data[0];
514 LOG(log_debug, logtype_afpd, "ad_valid_header_osx(\"%s\"): BEGIN", fullpathname(path));
516 EC_NEG1( fd = open(path, O_RDONLY) );
518 /* read the header */
519 EC_NEG1( header_len = read(fd, buf, AD_DATASZ_OSX) );
521 if (header_len < AD_HEADER_LEN)
524 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
525 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
526 adosx.ad_magic = ntohl(adosx.ad_magic);
527 adosx.ad_version = ntohl(adosx.ad_version);
529 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
530 LOG(log_error, logtype_afpd, "ad_valid_header_osx: not an adouble:ox file");
535 LOG(log_debug, logtype_afpd, "ad_valid_header_osx(\"%s\"): END: %d", fullpathname(path), ret);
543 /* Read an ._ file, only uses the resofork, finderinfo is taken from EA */
544 static int ad_header_read_osx(const char *path _U_, struct adouble *ad, const struct stat *hst)
547 struct adouble adosx;
548 char *buf = &adosx.ad_data[0];
554 memset(buf, 0, sizeof(adosx.ad_data));
556 /* read the header */
557 EC_NEG1( header_len = adf_pread(ad->ad_rfp, buf, AD_DATASZ_OSX, 0) );
559 if (header_len < AD_HEADER_LEN) {
564 memcpy(&adosx.ad_magic, buf, sizeof(adosx.ad_magic));
565 memcpy(&adosx.ad_version, buf + ADEDOFF_VERSION, sizeof(adosx.ad_version));
566 adosx.ad_magic = ntohl(adosx.ad_magic);
567 adosx.ad_version = ntohl(adosx.ad_version);
569 if ((adosx.ad_magic != AD_MAGIC) || (adosx.ad_version != AD_VERSION2)) {
570 LOG(log_error, logtype_afpd, "ad_header_read_osx: can't parse AppleDouble header");
575 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
576 nentries = ntohs(nentries);
577 len = nentries * AD_ENTRY_LEN;
579 if (len + AD_HEADER_LEN > sizeof(adosx.ad_data))
580 len = sizeof(adosx.ad_data) - AD_HEADER_LEN;
582 buf += AD_HEADER_LEN;
583 if (len > header_len - AD_HEADER_LEN) {
584 LOG(log_error, logtype_afpd, "ad_header_read_osx: can't read entry info.");
589 nentries = len / AD_ENTRY_LEN;
590 parse_entries(&adosx, buf, nentries);
592 if (ad_getentryoff(&adosx, ADEID_RFORK) == 0
593 || ad_getentryoff(&adosx, ADEID_RFORK) > sizeof(ad->ad_data)
594 || ad_getentryoff(&adosx, ADEID_RFORK) > header_len
596 LOG(log_error, logtype_afpd, "ad_header_read_osx: problem with rfork entry offset.");
603 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
606 ad_setentryoff(ad, ADEID_RFORK, ad_getentryoff(&adosx, ADEID_RFORK));
607 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
613 static int ad_header_read_ea(const char *path, struct adouble *ad, const struct stat *hst _U_)
618 char *buf = ad->ad_data;
620 if (ad_meta_fileno(ad) != -1)
621 header_len = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA);
623 header_len = sys_lgetxattr(path, AD_EA_META, ad->ad_data, AD_DATASZ_EA);
624 if (header_len < 1) {
625 LOG(log_debug, logtype_default, "ad_header_read_ea: %s", strerror(errno));
629 if (header_len < AD_HEADER_LEN) {
630 LOG(log_error, logtype_default, "ad_header_read_ea: bogus AppleDouble header.");
635 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
636 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
638 ad->ad_magic = ntohl( ad->ad_magic );
639 ad->ad_version = ntohl( ad->ad_version );
641 if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
642 LOG(log_error, logtype_default, "ad_header_read_ea: wrong magic or version");
647 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
648 nentries = ntohs( nentries );
650 /* Protect against bogus nentries */
651 len = nentries * AD_ENTRY_LEN;
652 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
653 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
654 if (len > header_len - AD_HEADER_LEN) {
655 LOG(log_error, logtype_default, "ad_header_read_ea: can't read entry info.");
659 nentries = len / AD_ENTRY_LEN;
661 /* Now parse entries */
662 parse_entries(ad, buf + AD_HEADER_LEN, nentries);
668 * Takes a path to an AppleDouble file and creates the parrent .AppleDouble directory
671 * path: "/path/.AppleDouble/file"
672 * => mkdir("/path/.AppleDouble/") (in ad_mkdir())
674 static int ad_mkrf(const char *path)
678 * Probably .AppleDouble doesn't exist, try to mkdir it.
680 if (NULL == ( slash = strrchr( path, '/' )) ) {
685 if ( ad_mkdir( path, 0777 ) < 0 ) {
692 static int ad_mkrf_ea(const char *path _U_)
694 AFP_PANIC("ad_mkrf_ea: dont use");
698 static int ad_mkrf_osx(const char *path _U_)
704 if we are root change path user/ group
705 It can be a native function for BSD cf. FAQ.Q10
706 path: pathname to chown
707 stbuf: parent directory inode
709 use fstat and fchown or lchown with linux?
711 #define EMULATE_SUIDDIR
713 static int ad_chown(const char *path, struct stat *stbuf)
716 #ifdef EMULATE_SUIDDIR
719 if (default_uid != (uid_t)-1) {
720 /* we are root (admin) */
721 id = (default_uid)?default_uid:stbuf->st_uid;
722 ret = lchown( path, id, stbuf->st_gid );
728 #define DEFMASK 07700 /* be conservative */
731 return access right and inode of path parent directory
733 static int ad_mode_st(const char *path, mode_t *mode, struct stat *stbuf)
738 if (ad_stat(path, stbuf) != 0) {
742 *mode &= stbuf->st_mode;
746 /* --------------------------- */
747 static int ad_header_upgrade(struct adouble *ad _U_, const char *name _U_)
752 static int ad_header_upgrade_ea(struct adouble *ad _U_, const char *name _U_)
754 AFP_PANIC("ad_header_upgrade_ea: dont use");
759 * Error handling for adouble header(=metadata) file open error
761 * We're called because opening ADFLAGS_HF caused an error.
762 * 1. In case ad_open is called with ADFLAGS_NOHF the error is suppressed.
763 * 2. If ad_open was called with ADFLAGS_DF we may have opened the datafork and thus
764 * ought to close it before returning with an error condition.
766 static int ad_error(struct adouble *ad, int adflags)
769 if (adflags & ADFLAGS_NOHF) { /* 1 */
772 if (adflags & (ADFLAGS_DF | ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) { /* 2 */
773 ad_close( ad, ADFLAGS_DF );
780 * Map ADFLAGS to open() flags
782 * @param adfile (r) the file you really want to open: ADFLAGS_DF or ADFLAGS_HF
783 * @param adflags (r) flags from ad_open(..., adflags, ...)
784 * @returns mapped flags suitable for calling open()
786 static int ad2openflags(const struct adouble *ad, int adfile, int adflags)
790 if (adflags & ADFLAGS_RDWR)
792 if (adflags & ADFLAGS_RDONLY) {
793 if (((adfile == ADFLAGS_DF || adfile == ADFLAGS_RF) && (adflags & ADFLAGS_SETSHRMD))
794 /* need rw access for locks */
795 || ((adfile == ADFLAGS_HF) && (ad->ad_vers == AD_VERSION2)))
796 /* need rw access for adouble file for the case:
797 1) openfork(data+meta:O_RDONLY), 2) openfork(reso(=meta):O_RDWR) */
802 if (adflags & ADFLAGS_CREATE)
804 if (adflags & ADFLAGS_EXCL)
806 if (adflags & ADFLAGS_TRUNC)
812 static int ad_open_df(const char *path, int adflags, mode_t mode, struct adouble *ad)
821 LOG(log_debug, logtype_default,
822 "ad_open_df(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
823 fullpathname(path), adflags2logstr(adflags),
824 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
825 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
826 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
828 if (ad_data_fileno(ad) != -1) {
829 /* the file is already open, but we want write access: */
830 if ((adflags & ADFLAGS_RDWR)
831 /* and it was denied the first time: */
832 && (ad->ad_data_fork.adf_flags & O_RDONLY)) {
836 /* it's not new anymore */
837 ad->ad_data_fork.adf_flags &= ~( O_TRUNC | O_CREAT );
838 ad->ad_data_fork.adf_refcount++;
842 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_DF, adflags);
845 if ((adflags & ADFLAGS_CREATE)) {
846 st_invalid = ad_mode_st(path, &admode, &st_dir);
847 if ((ad->ad_options & ADVOL_UNIXPRIV))
851 ad->ad_data_fork.adf_fd = open(path, oflags, admode);
853 if (ad->ad_data_fork.adf_fd == -1) {
858 if ((adflags & ADFLAGS_SETSHRMD) && (adflags & ADFLAGS_RDONLY)) {
861 EC_NEG1( ad->ad_data_fork.adf_fd = open(path, oflags, admode) );
865 case OPEN_NOFOLLOW_ERRNO:
866 ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
867 if ((lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN)) <= 0) {
868 free(ad->ad_data_fork.adf_syml);
871 ad->ad_data_fork.adf_syml[lsz] = 0;
872 ad->ad_data_fork.adf_fd = -2; /* -2 means its a symlink */
880 ad_chown(path, &st_dir); /* just created, set owner if admin (root) */
882 ad->ad_data_fork.adf_flags = oflags;
883 adf_lock_init(&ad->ad_data_fork);
884 ad->ad_data_fork.adf_refcount++;
887 LOG(log_debug, logtype_default,
888 "ad_open_df(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
889 fullpathname(path), adflags2logstr(adflags), ret,
890 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
891 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
892 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
896 static int ad_open_hf_v2(const char *path, int adflags, mode_t mode, struct adouble *ad)
901 struct stat *pst = NULL;
903 int oflags, nocreatflags, opened = 0;
907 LOG(log_debug, logtype_default,
908 "ad_open_hf_v2(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
909 fullpathname(path), adflags2logstr(adflags),
910 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
911 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
912 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
914 if (ad_meta_fileno(ad) != -1) {
915 /* the file is already open, but we want write access: */
916 if ((adflags & ADFLAGS_RDWR) &&
917 /* and it was already denied: */
918 (ad->ad_mdp->adf_flags & O_RDONLY)) {
922 ad_refresh(path, ad);
923 /* it's not new anymore */
924 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
925 ad->ad_mdp->adf_refcount++;
929 ad_p = ad->ad_ops->ad_path(path, adflags);
930 oflags = O_NOFOLLOW | ad2openflags(ad, ADFLAGS_HF, adflags);
931 LOG(log_debug, logtype_default,"ad_open_hf_v2(\"%s\"): open flags: %s",
932 fullpathname(path), openflags2logstr(oflags));
933 nocreatflags = oflags & ~(O_CREAT | O_EXCL);
935 ad_meta_fileno(ad) = open(ad_p, nocreatflags);
937 if (ad_meta_fileno(ad) != -1) {
938 ad->ad_mdp->adf_flags = nocreatflags;
944 if ((adflags & ADFLAGS_RDONLY) && (adflags & ADFLAGS_SETSHRMD)) {
945 nocreatflags &= ~O_RDWR;
946 nocreatflags |= O_RDONLY;
947 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, nocreatflags) );
948 ad->ad_mdp->adf_flags = nocreatflags;
953 if (!(oflags & O_CREAT))
956 * We're expecting to create a new adouble header file here
958 LOG(log_debug, logtype_default, "ad_open(\"%s\"): creating adouble file",
962 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
963 if ((ad->ad_options & ADVOL_UNIXPRIV))
965 admode = ad_hf_mode(admode);
966 if (errno == ENOENT) {
967 EC_NEG1_LOG( ad->ad_ops->ad_mkrf(ad_p) );
969 st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
970 if ((ad->ad_options & ADVOL_UNIXPRIV))
972 admode = ad_hf_mode(admode);
975 /* retry with O_CREAT */
976 EC_NEG1( ad_meta_fileno(ad) = open(ad_p, oflags, admode) );
977 ad->ad_mdp->adf_flags = oflags;
978 /* just created, set owner if admin owner (root) */
980 ad_chown(ad_p, &st_dir);
987 /* Now we've got a new opened fd, we need to check that in the error case */
990 if (!(ad->ad_mdp->adf_flags & O_CREAT)) {
991 /* check for 0 length files, treat them as new. */
992 if (fstat(ad->ad_mdp->adf_fd, &st_meta) == 0) {
993 if (st_meta.st_size == 0)
994 ad->ad_mdp->adf_flags |= O_TRUNC;
996 /* we have valid data in st_meta stat structure, reused it in ad_header_read */
1001 adf_lock_init(ad->ad_mdp);
1002 ad->ad_mdp->adf_refcount = 1;
1004 if ((ad->ad_mdp->adf_flags & ( O_TRUNC | O_CREAT ))) {
1005 /* This is a new adouble header file, create it */
1006 EC_NEG1_LOG( new_ad_header(ad, path, pst, adflags) );
1009 /* Read the adouble header in and parse it.*/
1010 EC_NEG1_LOG( ad->ad_ops->ad_header_read(path, ad, pst) );
1014 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1015 close(ad_meta_fileno(ad));
1016 ad_meta_fileno(ad) = -1;
1017 ad->ad_mdp->adf_refcount = 0;
1019 LOG(log_debug, logtype_default,
1020 "ad_open_hf_v2(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1021 fullpathname(path), adflags2logstr(adflags), ret,
1022 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1023 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1024 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1028 static int ad_open_hf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1035 LOG(log_debug, logtype_default,
1036 "ad_open_hf_ea(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1037 fullpathname(path), adflags2logstr(adflags),
1038 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1039 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1040 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1042 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_DF, adflags) & ~(O_CREAT | O_TRUNC));
1044 if (ad_meta_fileno(ad) == -2)
1048 if (ad_meta_fileno(ad) != -1) {
1049 /* the file is already open, but we want write access: */
1050 if ((oflags & O_RDWR) &&
1051 /* and it was already denied: */
1052 (ad->ad_mdp->adf_flags & O_RDONLY)) {
1053 LOG(log_error, logtype_default, "ad_open_hf_ea(%s): rw request for ro file: %s",
1054 fullpathname(path), strerror(errno));
1058 /* it's not new anymore */
1059 ad->ad_mdp->adf_flags &= ~( O_TRUNC | O_CREAT );
1061 if (oflags & O_RDWR) {
1062 /* Fo a RDONLY adouble we just use sys_lgetxattr instead if sys_fgetxattr */
1063 if (adflags & ADFLAGS_DIR)
1064 /* For directories we open the directory RDONYL so we can later fchdir() */
1065 oflags = (oflags & ~O_RDWR) | O_RDONLY;
1066 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): opening base file for meta adouble EA", path);
1067 EC_NEG1(ad_meta_fileno(ad) = open(path, oflags));
1069 ad->ad_mdp->adf_flags = oflags;
1073 /* Read the adouble header in and parse it.*/
1074 if (ad->ad_ops->ad_header_read(path, ad, NULL) != 0) {
1075 if (!(adflags & ADFLAGS_CREATE)) {
1076 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): can't read metadata EA", path);
1081 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): creating metadata EA", path);
1083 /* It doesnt exist, EPERM or another error */
1084 if (!(errno == ENOATTR || errno == ENOENT)) {
1085 LOG(log_error, logtype_default, "ad_open_hf_ea: unexpected: %s", strerror(errno));
1090 EC_NEG1_LOG(new_ad_header(ad, path, NULL, adflags));
1091 ad->ad_mdp->adf_flags |= O_CREAT; /* mark as just created */
1093 LOG(log_debug, logtype_default, "ad_open_hf_ea(\"%s\"): created metadata EA", path);
1096 if (ad_meta_fileno(ad) != -1)
1097 ad->ad_mdp->adf_refcount++;
1098 (void)ad_reso_size(path, adflags, ad);
1101 if (ret != 0 && opened && ad_meta_fileno(ad) != -1) {
1102 close(ad_meta_fileno(ad));
1103 ad_meta_fileno(ad) = -1;
1104 ad->ad_mdp->adf_refcount = 0;
1106 LOG(log_debug, logtype_default,
1107 "ad_open_hf_ea(\"%s\", %s): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1108 fullpathname(path), adflags2logstr(adflags), ret,
1109 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1110 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1111 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1116 static int ad_open_hf(const char *path, int adflags, int mode, struct adouble *ad)
1120 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1123 switch (ad->ad_vers) {
1125 ret = ad_open_hf_v2(path, adflags, mode, ad);
1128 ret = ad_open_hf_ea(path, adflags, mode, ad);
1136 ret = ad_error(ad, adflags);
1142 * Get resofork length for adouble:ea
1144 static int ad_reso_size(const char *path, int adflags, struct adouble *ad)
1149 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\")", path);
1154 if (ad_reso_fileno(ad) != -1) {
1155 EC_NEG1( fstat(ad_reso_fileno(ad), &st) );
1156 ad->ad_rlen = st.st_size;
1157 } else if (ad_meta_fileno(ad) != -1) {
1158 EC_NEG1( easz = sys_fgetxattr(ad_meta_fileno(ad), AD_EA_RESO, NULL, 0) );
1166 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags));
1167 EC_ZERO( lstat(rfpath, &st));
1168 if (st.st_size > ADEDOFF_RFORK_OSX)
1169 ad->ad_rlen = st.st_size - ADEDOFF_RFORK_OSX;
1174 LOG(log_debug, logtype_default, "ad_reso_size(\"%s\"): size: %zd", path, ad->ad_rlen);
1182 static int ad_open_rf_v2(const char *path, int adflags, int mode, struct adouble *ad)
1185 * ad_open_hf_v2() does the work, but if it failed and adflags are ADFLAGS_NOHF | ADFLAGS_RF
1186 * ad_open_hf_v2() didn't give an error, but we're supposed to return a reso fork fd
1188 if (!AD_RSRC_OPEN(ad) && !(adflags & ADFLAGS_NORF))
1193 static int ad_open_rf_ea(const char *path, int adflags, int mode, struct adouble *ad)
1198 int closeflags = adflags & (ADFLAGS_DF | ADFLAGS_HF);
1205 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): BEGIN", fullpathname(path));
1207 oflags = O_NOFOLLOW | (ad2openflags(ad, ADFLAGS_RF, adflags) & ~O_CREAT);
1209 if (ad_reso_fileno(ad) != -1) {
1210 /* the file is already open, but we want write access: */
1211 if ((oflags & O_RDWR)
1212 /* and it was already denied: */
1213 && (ad->ad_rfp->adf_flags & O_RDONLY)) {
1217 ad->ad_rfp->adf_flags &= ~( O_TRUNC | O_CREAT );
1218 ad->ad_rfp->adf_refcount++;
1219 EC_NEG1_LOG( ad_reso_size(path, adflags, ad));
1223 if (ad_meta_fileno(ad) < 0)
1225 if ((ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad), AD_EA_RESO, oflags)) == -1) {
1226 if (!(adflags & ADFLAGS_CREATE)) {
1231 EC_NEG1_LOG( ad_reso_fileno(ad) = sys_getxattrfd(ad_meta_fileno(ad),
1232 AD_EA_RESO, oflags, 0666) );
1235 EC_NULL_LOG( rfpath = ad->ad_ops->ad_path(path, adflags) );
1236 if ((ad_reso_fileno(ad) = open(rfpath, oflags)) == -1) {
1237 if (!(adflags & ADFLAGS_CREATE))
1240 EC_NEG1_LOG( ad_reso_fileno(ad) = open(rfpath, oflags, mode) );
1241 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork: \"%s\"",
1246 ad->ad_rfp->adf_refcount = 1;
1247 ad->ad_rfp->adf_flags = oflags;
1250 EC_ZERO_LOG( fstat(ad_reso_fileno(ad), &st) );
1251 if (ad->ad_rfp->adf_flags & O_CREAT) {
1252 /* This is a new adouble header file, create it */
1253 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, initializing: \"%s\"",
1255 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): created adouble rfork, flushing: \"%s\"",
1259 /* Read the adouble header */
1260 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): reading adouble rfork: \"%s\"",
1262 EC_NEG1_LOG( ad_header_read_osx(NULL, ad, &st) );
1266 (void)ad_reso_size(path, adflags, ad);
1270 if (opened && (ad_reso_fileno(ad) != -1)) {
1271 close(ad_reso_fileno(ad));
1272 ad_reso_fileno(ad) = -1;
1273 ad->ad_rfp->adf_refcount = 0;
1275 if (adflags & ADFLAGS_NORF) {
1279 (void)ad_close(ad, closeflags);
1285 LOG(log_debug, logtype_default, "ad_open_rf(\"%s\"): END: %d", fullpathname(path), ret);
1291 * Open ressource fork
1293 static int ad_open_rf(const char *path, int adflags, int mode, struct adouble *ad)
1297 switch (ad->ad_vers) {
1299 ret = ad_open_rf_v2(path, adflags, mode, ad);
1302 ret = ad_open_rf_ea(path, adflags, mode, ad);
1312 /***********************************************************************************
1314 ********************************************************************************* */
1316 off_t ad_getentryoff(const struct adouble *ad, int eid)
1318 if (ad->ad_vers == AD_VERSION2)
1319 return ad->ad_eid[eid].ade_off;
1328 return ADEDOFF_RFORK_OSX;
1331 return ad->ad_eid[eid].ade_off;
1334 AFP_PANIC("What am I doing here?");
1337 const char *ad_path_ea( const char *path, int adflags _U_)
1342 const char *ad_path_osx(const char *path, int adflags _U_)
1344 static char pathbuf[ MAXPATHLEN + 1];
1345 char c, *slash, buf[MAXPATHLEN + 1];
1347 if (!strcmp(path,".")) {
1349 getcwd(buf, MAXPATHLEN);
1352 strlcpy(buf, path, MAXPATHLEN +1);
1354 if (NULL != ( slash = strrchr( buf, '/' )) ) {
1357 strlcpy( pathbuf, buf, MAXPATHLEN +1);
1360 pathbuf[ 0 ] = '\0';
1363 strlcat( pathbuf, "._", MAXPATHLEN +1);
1364 strlcat( pathbuf, slash, MAXPATHLEN +1);
1369 * Put the .AppleDouble where it needs to be:
1371 * / a/.AppleDouble/b
1373 * \ b/.AppleDouble/.Parent
1375 * FIXME: should do something for pathname > MAXPATHLEN
1377 const char *ad_path( const char *path, int adflags)
1379 static char pathbuf[ MAXPATHLEN + 1];
1383 if ( adflags & ADFLAGS_DIR ) {
1384 l = strlcpy( pathbuf, path, sizeof(pathbuf));
1386 if ( l && l < MAXPATHLEN) {
1389 strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
1391 if (NULL != ( slash = strrchr( path, '/' )) ) {
1394 /* XXX we must return NULL here and test in the caller */
1397 memcpy( pathbuf, path, l);
1402 l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
1403 strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
1409 /* -------------------------
1410 * Support inherited protection modes for AppleDouble files. The supplied
1411 * mode is ANDed with the parent directory's mask value in lieu of "umask",
1412 * and that value is returned.
1414 char *ad_dir(const char *path)
1416 static char modebuf[ MAXPATHLEN + 1];
1419 * For a path with directories in it, remove the final component
1420 * (path or subdirectory name) to get the name we want to stat.
1421 * For a path which is just a filename, use "." instead.
1423 slash = strrchr( path, '/' );
1428 if (len >= MAXPATHLEN) {
1429 errno = ENAMETOOLONG;
1430 return NULL; /* can't do it */
1432 memcpy( modebuf, path, len );
1433 modebuf[len] = '\0';
1434 /* is last char a '/' ? */
1435 if (slash[1] == 0) {
1436 slash = modebuf+ len;
1438 while (modebuf < slash && slash[-1] == '/') {
1441 if (modebuf == slash) {
1445 while (modebuf < slash && *slash != '/') {
1448 if (modebuf == slash) {
1451 *slash = '\0'; /* remove pathname component */
1456 modebuf[0] = '.'; /* use current directory */
1461 int ad_setfuid(const uid_t id)
1467 /* ---------------- */
1468 uid_t ad_getfuid(void)
1474 stat path parent directory
1476 int ad_stat(const char *path, struct stat *stbuf)
1483 return lstat( p, stbuf );
1487 return access right of path parent directory
1489 int ad_mode( const char *path, mode_t mode)
1492 ad_mode_st(path, &mode, &stbuf);
1497 * Use mkdir() with mode bits taken from ad_mode().
1499 int ad_mkdir( const char *path, mode_t mode)
1505 LOG(log_debug, logtype_default, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
1506 path, mode, getcwdpath());
1508 st_invalid = ad_mode_st(path, &mode, &stbuf);
1509 ret = mkdir( path, mode );
1510 if (ret || st_invalid)
1512 ad_chown(path, &stbuf);
1517 static void ad_init_func(struct adouble *ad)
1519 switch (ad->ad_vers) {
1521 ad->ad_ops = &ad_adouble;
1522 ad->ad_rfp = &ad->ad_resource_fork;
1523 ad->ad_mdp = &ad->ad_resource_fork;
1526 ad->ad_ops = &ad_adouble_ea;
1527 ad->ad_rfp = &ad->ad_resource_fork;
1528 ad->ad_mdp = &ad->ad_data_fork;
1531 AFP_PANIC("ad_init: unknown AD version");
1535 ad_data_fileno(ad) = -1;
1536 ad_reso_fileno(ad) = -1;
1537 ad_meta_fileno(ad) = -1;
1538 ad->ad_refcount = 1;
1542 void ad_init_old(struct adouble *ad, int flags, int options)
1544 memset(ad, 0, sizeof(struct adouble));
1545 ad->ad_vers = flags;
1546 ad->ad_options = options;
1550 void ad_init(struct adouble *ad, const struct vol * restrict vol)
1552 memset(ad, 0, sizeof(struct adouble));
1553 ad->ad_vers = vol->v_adouble;
1554 ad->ad_options = vol->v_ad_options;
1559 * Open data-, metadata(header)- or ressource fork
1561 * ad_open(struct adouble *ad, const char *path, int adflags, int flags)
1562 * ad_open(struct adouble *ad, const char *path, int adflags, int flags, mode_t mode)
1564 * You must call ad_init() before ad_open, usually you'll just call it like this: \n
1567 * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
1570 * Open a files data fork, metadata fork or ressource fork.
1572 * @param ad (rw) pointer to struct adouble
1573 * @param path (r) Path to file or directory
1574 * @param adflags (r) Flags specifying which fork to open, can be or'd:
1575 * ADFLAGS_DF: open data fork
1576 * ADFLAGS_RF: open ressource fork
1577 * ADFLAGS_HF: open header (metadata) file
1578 * ADFLAGS_NOHF: it's not an error if header file couldn't be opened
1579 * ADFLAGS_NORF: it's not an error if reso fork couldn't be opened
1580 * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags
1582 * Access mode for the forks:
1583 * ADFLAGS_RDONLY: open read only
1584 * ADFLAGS_RDWR: open read write
1587 * ADFLAGS_CREATE: create if not existing
1588 * ADFLAGS_TRUNC: truncate
1591 * ADFLAGS_CHECK_OF: check for open forks from us and other afpd's
1592 * ADFLAGS_SETSHRMD: this adouble struct will be used to set sharemode locks.
1593 * This basically results in the files being opened RW instead of RDONLY.
1594 * @param mode (r) mode used with O_CREATE
1596 * The open mode flags (rw vs ro) have to take into account all the following requirements:
1597 * - we remember open fds for files because me must avoid a single close releasing fcntl locks for other
1598 * fds of the same file
1600 * @returns 0 on success, any other value indicates an error
1602 int ad_open(struct adouble *ad, const char *path, int adflags, ...)
1608 LOG(log_debug, logtype_default,
1609 "ad_open(\"%s\", %s): BEGIN [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1610 fullpathname(path), adflags2logstr(adflags),
1611 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1612 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1613 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1615 if (adflags & ADFLAGS_CHECK_OF)
1616 /* Checking for open forks requires sharemode lock support (ie RDWR instead of RDONLY) */
1617 adflags |= ADFLAGS_SETSHRMD;
1619 if (adflags & ADFLAGS_SETSHRMD)
1620 /* sharemode locks are stored in the data fork */
1621 adflags |= ADFLAGS_DF;
1623 if (ad->ad_vers == AD_VERSION2) {
1624 if (adflags & ADFLAGS_RF)
1625 adflags |= ADFLAGS_HF;
1626 if (adflags & ADFLAGS_NORF)
1627 adflags |= ADFLAGS_NOHF;
1630 if (ad->ad_inited != AD_INITED) {
1631 ad->ad_adflags = adflags;
1632 ad->ad_inited = AD_INITED;
1634 ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
1635 if (ad->ad_resource_fork.adf_refcount > 0)
1636 ad->ad_open_forks |= ATTRBIT_ROPEN;
1639 va_start(args, adflags);
1640 if (adflags & ADFLAGS_CREATE)
1641 mode = va_arg(args, mode_t);
1644 if (adflags & ADFLAGS_DF) {
1645 EC_ZERO( ad_open_df(path, adflags, mode, ad) );
1648 if (adflags & ADFLAGS_HF) {
1649 EC_ZERO( ad_open_hf(path, adflags, mode, ad) );
1652 if (adflags & ADFLAGS_RF) {
1653 EC_ZERO( ad_open_rf(path, adflags, mode, ad) );
1656 if (adflags & ADFLAGS_CHECK_OF) {
1657 ad->ad_open_forks |= ad_openforks(ad, ad->ad_open_forks);
1661 LOG(log_debug, logtype_default,
1662 "ad_open(\"%s\"): END: %d [dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
1663 fullpathname(path), ret,
1664 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
1665 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
1666 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
1672 * @brief open metadata, possibly as root
1674 * Return only metadata but try very hard ie at first try as user, then try as root.
1676 * @param name name of file/dir
1677 * @param flags ADFLAGS_DIR: name is a directory \n
1678 * ADFLAGS_CHECK_OF: test if name is open by us or another afpd process
1680 * @param adp pointer to struct adouble
1682 int ad_metadata(const char *name, int flags, struct adouble *adp)
1685 int ret, err, oflags;
1687 /* Sanitize flags */
1688 oflags = (flags & (ADFLAGS_CHECK_OF | ADFLAGS_DIR)) | ADFLAGS_HF | ADFLAGS_RDONLY;
1690 if ((ret = ad_open(adp, name, oflags)) < 0 && errno == EACCES) {
1693 LOG(log_error, logtype_default, "ad_metadata(%s): seteuid failed %s", name, strerror(errno));
1697 /* we are root open read only */
1698 ret = ad_open(adp, name, oflags);
1700 if ( seteuid(uid) < 0) {
1701 LOG(log_error, logtype_default, "ad_metadata: can't seteuid back");
1711 * @brief openat like wrapper for ad_metadata
1713 int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
1719 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
1725 if (ad_metadata(name, flags, adp) < 0) {
1732 if (fchdir(cwdfd) != 0) {
1733 LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
1746 int ad_refresh(const char *path, struct adouble *ad)
1748 switch (ad->ad_vers) {
1750 if (ad_meta_fileno(ad) == -1)
1752 return ad->ad_ops->ad_header_read(NULL, ad, NULL);
1756 if (AD_META_OPEN(ad)) {
1757 if (ad_data_fileno(ad) == -1)
1759 // TODO: read meta EA
1762 if (AD_RSRC_OPEN(ad)) {
1763 if (ad_reso_fileno(ad) == -1)
1766 if (fstat(ad_reso_fileno(ad), &st) == -1)
1768 ad->ad_rlen = st.st_size;
1771 if (AD_META_OPEN(ad)) {
1772 if (ad_data_fileno(ad) == -1)
1774 // TODO: read meta EA
1776 if (AD_RSRC_OPEN(ad)) {
1777 if (ad_reso_fileno(ad) == -1)
1779 if (ad_header_read_osx(path, ad, NULL) < 0)
1783 return ad->ad_ops->ad_header_read(path, ad, NULL);
1792 int ad_openat(struct adouble *ad,
1793 int dirfd, /* dir fd openat like */
1803 if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0))
1807 va_start(args, adflags);
1808 if (adflags & ADFLAGS_CREATE)
1809 mode = va_arg(args, mode_t);
1812 EC_NEG1( ad_open(ad, path, adflags, mode) );
1815 if (fchdir(cwdfd) != 0) {
1816 AFP_PANIC("ad_openat: cant chdir back");
1827 /* build a resource fork mode from the data fork mode:
1828 * remove X mode and extend header to RW if R or W (W if R for locking),
1830 mode_t ad_hf_mode(mode_t mode)
1832 mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
1833 /* fnctl lock need write access */
1834 if ((mode & S_IRUSR))
1836 if ((mode & S_IRGRP))
1838 if ((mode & S_IROTH))
1841 /* if write mode set add read mode */
1842 if ((mode & S_IWUSR))
1844 if ((mode & S_IWGRP))
1846 if ((mode & S_IWOTH))