2 * $Id: ad_open.c,v 1.30.6.4 2003-12-12 19:34:27 didg Exp $
4 * Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
5 * Copyright (c) 1990,1991 Regents of The University of Michigan.
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
26 * NOTE: I don't use inline because a good compiler should be
27 * able to optimize all the static below. Didier
32 #endif /* HAVE_CONFIG_H */
37 #endif /* HAVE_FCNTL_H */
40 #endif /* HAVE_UNISTD_H */
42 #include <atalk/logger.h>
45 #include <sys/types.h>
47 #include <sys/param.h>
50 #include <netatalk/endian.h>
51 #include <atalk/adouble.h>
52 #include <atalk/util.h>
54 #include "ad_private.h"
57 #define MAX(a, b) ((a) < (b) ? (b) : (a))
61 * AppleDouble entry default offsets.
62 * The layout looks like this:
64 * this is the v1 layout:
66 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
68 * we need to change it to look like this:
71 * field length (in bytes)
74 * FILEDATESI 16 replaces FILEI
78 * SHORTNAME 12 8.3 new
81 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
82 * and add in the new fields.
84 * NOTE: the HFS module will need similar modifications to interact with
88 #define ADEDOFF_MAGIC (0)
89 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
90 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
91 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
93 /* initial lengths of some of the fields */
94 #define ADEDLEN_INIT 0
96 /* make sure we don't redefine ADEDOFF_FILEI */
99 #endif /* ADEDOFF_FILEI */
101 #define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
102 #define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
103 #define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
104 #define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
105 #define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
107 /* i stick things in a slightly different order than their eid order in
108 * case i ever want to separate RootInfo behaviour from the rest of the
110 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
111 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
112 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
113 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
114 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
115 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
116 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
117 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
118 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
119 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
120 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
122 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
124 /* we keep local copies of a bunch of stuff so that we can initialize things
127 /* Bits in the finderinfo data.
128 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
130 #define FINDERINFO_CUSTOMICON 0x4
131 #define FINDERINFO_CLOSEDVIEW 0x100
133 /* offsets in finderinfo */
134 #define FINDERINFO_FRTYPEOFF 0
135 #define FINDERINFO_FRCREATOFF 4
136 #define FINDERINFO_FRFLAGOFF 8
137 #define FINDERINFO_FRVIEWOFF 14
139 /* invisible bit for dot files */
140 #define ATTRBIT_INVISIBLE (1 << 0)
141 #define FINDERINFO_INVISIBLE (1 << 14)
143 /* this is to prevent changing timezones from causing problems with
144 localtime volumes. the screw-up is 30 years. we use a delta of 5
146 #define TIMEWARP_DELTA 157680000
150 u_int32_t id, offset, len;
153 static const struct entry entry_order1[ADEID_NUM_V1 +1] = {
154 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT}, /* 3 */
155 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT}, /* 4 */
156 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI}, /* 7 */
157 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI}, /* 9 */
158 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT}, /* 2 */
162 #if AD_VERSION == AD_VERSION1
163 #define DISK_EID(ad, a) (a)
165 #else /* AD_VERSION == AD_VERSION2 */
167 static u_int32_t get_eid(struct adouble *ad, u_int32_t eid)
171 if (ad->ad_version == AD_VERSION1)
174 return ADEID_PRIVDEV;
176 return ADEID_PRIVINO;
178 return ADEID_PRIVSYN;
183 #define DISK_EID(ad, a) get_eid(ad, a)
185 static const struct entry entry_order2[ADEID_NUM_V2 +1] = {
186 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
187 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
188 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
189 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
190 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
191 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
192 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
193 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
194 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
195 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
196 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
197 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
201 #endif /* AD_VERSION == AD_VERSION2 */
203 #if AD_VERSION == AD_VERSION2
205 /* FIXME work only if < 2GB */
206 static int ad_v1tov2(struct adouble *ad, const char *path)
213 /* check to see if we should convert this header. */
214 if (!path || (ad->ad_version != AD_VERSION1))
217 /* we want version1 anyway */
218 if (ad->ad_flags == AD_VERSION1)
223 /* we don't really know what we want */
224 ad->ad_flags = ad->ad_version;
228 /* convert from v1 to v2. what does this mean?
229 * 1) change FILEI into FILEDATESI
230 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
231 * 3) move FILEI attributes into AFPFILEI
232 * 4) initialize ACCESS field of FILEDATESI.
235 #define SHIFTDATA (AD_DATASZ2 - AD_DATASZ1)
237 /* bail if we can't get a lock */
238 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
241 if ((fd = open(path, O_RDWR)) < 0)
244 if (fstat(fd, &st) ||
245 sys_ftruncate(fd, st.st_size + SHIFTDATA) < 0) {
248 if (st.st_size > 0x7fffffff) {
249 LOG(log_debug, logtype_default, "ad_v1tov2: file too big.");
253 /* last place for failure. */
254 if ((void *) (buf = (char *)
255 mmap(NULL, st.st_size + SHIFTDATA,
256 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
261 off = ad->ad_eid[ADEID_RFORK].ade_off;
263 /* move the RFORK. this assumes that the RFORK is at the end */
264 memmove(buf + off + SHIFTDATA, buf + off,
265 ad->ad_eid[ADEID_RFORK].ade_len);
267 munmap(buf, st.st_size + SHIFTDATA);
270 /* now, fix up our copy of the header */
271 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
273 /* replace FILEI with FILEDATESI */
274 ad_getattr(ad, &attr);
275 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
276 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
277 ad->ad_eid[ADEID_FILEI].ade_off = 0;
278 ad->ad_eid[ADEID_FILEI].ade_len = 0;
280 /* add in the new entries */
281 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
282 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
283 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
284 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
285 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
286 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
287 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
288 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
290 ad->ad_eid[ADEID_PRIVDEV].ade_off = ADEDOFF_PRIVDEV;
291 ad->ad_eid[ADEID_PRIVDEV].ade_len = ADEDLEN_INIT;
292 ad->ad_eid[ADEID_PRIVINO].ade_off = ADEDOFF_PRIVINO;
293 ad->ad_eid[ADEID_PRIVINO].ade_len = ADEDLEN_INIT;
294 ad->ad_eid[ADEID_PRIVSYN].ade_off = ADEDOFF_PRIVSYN;
295 ad->ad_eid[ADEID_PRIVSYN].ade_len = ADEDLEN_INIT;
297 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
298 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
299 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
300 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
301 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
304 ad->ad_version = AD_VERSION2;
306 /* move our data buffer to make space for the new entries. */
307 memmove(ad->ad_data + ADEDOFF_NAME_V2, ad->ad_data + ADEDOFF_NAME_V1,
308 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
310 /* now, fill in the space with appropriate stuff. we're
311 operating as a v2 file now. */
312 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
313 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
314 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
315 ad_setattr(ad, attr);
316 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
317 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
319 /* rebuild the header and cleanup */
320 ad_flush(ad, ADFLAGS_HF );
321 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
326 sys_ftruncate(fd, st.st_size);
330 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
334 #endif /* AD_VERSION == AD_VERSION2 */
337 mode_t ad_hf_mode (mode_t mode)
339 /* fnctl lock need write access */
340 if ((mode & S_IRUSR))
342 if ((mode & S_IRGRP))
344 if ((mode & S_IROTH))
346 /* if write mode set add read mode */
347 if ((mode & S_IWUSR))
349 if ((mode & S_IWGRP))
351 if ((mode & S_IWOTH))
359 /* -------------------------------------
362 static void parse_entries(struct adouble *ad, char *buf,
365 u_int32_t eid, len, off;
368 /* now, read in the entry bits */
369 for (; nentries > 0; nentries-- ) {
370 memcpy(&eid, buf, sizeof( eid ));
371 eid = DISK_EID(ad, ntohl( eid ));
372 buf += sizeof( eid );
373 memcpy(&off, buf, sizeof( off ));
375 buf += sizeof( off );
376 memcpy(&len, buf, sizeof( len ));
378 buf += sizeof( len );
380 if ( 0 < eid && eid < ADEID_MAX ) {
381 ad->ad_eid[ eid ].ade_off = off;
382 ad->ad_eid[ eid ].ade_len = len;
383 } else if (!warning) {
385 LOG(log_debug, logtype_default, "ad_refresh: nentries %hd eid %d\n",
392 /* this reads enough of the header so that we can figure out all of
393 * the entry lengths and offsets. once that's done, we just read/mmap
394 * the rest of the header in.
396 * NOTE: we're assuming that the resource fork is kept at the end of
397 * the file. also, mmapping won't work for the hfs fs until it
398 * understands how to mmap header files. */
399 static int ad_header_read(struct adouble *ad, struct stat *hst)
401 char *buf = ad->ad_data;
405 static int warning = 0;
408 /* read the header */
409 if ((header_len = adf_pread( &ad->ad_hf, buf, sizeof(ad->ad_data), 0)) < 0) {
412 if (header_len < AD_HEADER_LEN) {
417 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
418 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
420 /* tag broken v1 headers. just assume they're all right.
421 * we detect two cases: null magic/version
422 * byte swapped magic/version
423 * XXX: in the future, you'll need the v1compat flag.
424 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
425 if (!ad->ad_magic && !ad->ad_version) {
427 LOG(log_debug, logtype_default, "notice: fixing up null v1 magic/version.");
430 ad->ad_magic = AD_MAGIC;
431 ad->ad_version = AD_VERSION1;
433 } else if (ad->ad_magic == AD_MAGIC && ad->ad_version == AD_VERSION1) {
435 LOG(log_debug, logtype_default, "notice: fixing up byte-swapped v1 magic/version.");
440 ad->ad_magic = ntohl( ad->ad_magic );
441 ad->ad_version = ntohl( ad->ad_version );
444 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
445 #if AD_VERSION == AD_VERSION2
446 && (ad->ad_version != AD_VERSION2)
447 #endif /* AD_VERSION == AD_VERSION2 */
450 LOG(log_debug, logtype_default, "ad_open: can't parse AppleDouble header.");
454 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
455 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
456 nentries = ntohs( nentries );
458 /* read in all the entry headers. if we have more than the
459 * maximum, just hope that the rfork is specified early on. */
460 len = nentries*AD_ENTRY_LEN;
462 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
463 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
465 buf += AD_HEADER_LEN;
466 if (len > header_len - AD_HEADER_LEN) {
468 LOG(log_debug, logtype_default, "ad_header_read: can't read entry info.");
472 /* figure out all of the entry offsets and lengths. if we aren't
473 * able to read a resource fork entry, bail. */
474 nentries = len / AD_ENTRY_LEN;
475 parse_entries(ad, buf, nentries);
476 if (!ad_getentryoff(ad, ADEID_RFORK)
477 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
479 LOG(log_debug, logtype_default, "ad_header_read: problem with rfork entry offset.");
483 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
485 LOG(log_debug, logtype_default, "ad_header_read: can't read in entries.");
491 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
492 return 1; /* fail silently */
495 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
497 /* fix up broken dates */
498 if (ad->ad_version == AD_VERSION1) {
501 /* check to see if the ad date is wrong. just see if we have
502 * a modification date in the future. */
503 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
504 (aint > TIMEWARP_DELTA + hst->st_mtime)) {
505 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
506 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
507 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
508 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
509 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
518 * Put the .AppleDouble where it needs to be:
522 * \ b/.AppleDouble/.Parent
525 ad_path( path, adflags )
529 static char pathbuf[ MAXPATHLEN + 1];
530 char c, *slash, buf[MAXPATHLEN + 1];
532 strncpy(buf, path, MAXPATHLEN);
533 if ( adflags & ADFLAGS_DIR ) {
534 strncpy( pathbuf, buf, MAXPATHLEN );
535 if ( *buf != '\0' ) {
536 strcat( pathbuf, "/" );
540 if (NULL != ( slash = strrchr( buf, '/' )) ) {
543 strncpy( pathbuf, buf, MAXPATHLEN);
550 strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
551 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
557 * Support inherited protection modes for AppleDouble files. The supplied
558 * mode is ANDed with the parent directory's mask value in lieu of "umask",
559 * and that value is returned.
562 #define DEFMASK 07700 /* be conservative */
568 static char modebuf[ MAXPATHLEN + 1];
572 if ( (len = strlen( path )) >= MAXPATHLEN ) {
573 errno = ENAMETOOLONG;
574 return NULL; /* can't do it */
578 * For a path with directories in it, remove the final component
579 * (path or subdirectory name) to get the name we want to stat.
580 * For a path which is just a filename, use "." instead.
582 strcpy( modebuf, path );
583 slash = strrchr( modebuf, '/' );
584 /* is last char a '/' */
585 if (slash && slash[1] == 0) {
586 while (modebuf < slash && slash[-1] == '/') {
589 if (modebuf < slash) {
590 *slash = '\0'; /* remove pathname component */
591 slash = strrchr( modebuf, '/' );
595 *slash = '\0'; /* remove pathname component */
597 modebuf[0] = '.'; /* use current directory */
603 /* ---------------- */
604 static uid_t default_uid = -1;
606 int ad_setfuid(const uid_t id)
612 /* ---------------- */
613 uid_t ad_getfuid(void)
619 return inode of path parent directory
621 int ad_stat(const char *path, struct stat *stbuf)
630 return stat( p, stbuf );
634 if we are root change path user/ group
635 It can be a native function for BSD cf. FAQ.Q10
636 path: pathname to chown
637 stbuf: parent directory inode
639 use fstat and fchown or lchown with linux?
641 #define EMULATE_SUIDDIR
643 static int ad_chown(const char *path, struct stat *stbuf)
646 #ifdef EMULATE_SUIDDIR
649 if (default_uid != -1) {
650 /* we are root (admin) */
651 id = (default_uid)?default_uid:stbuf->st_uid;
652 ret = chown( path, id, stbuf->st_gid );
659 return access right and inode of path parent directory
661 static int ad_mode_st(const char *path, int *mode, struct stat *stbuf)
666 if (ad_stat(path, stbuf) != 0) {
670 *mode &= stbuf->st_mode;
675 return access right of path parent directory
678 ad_mode( path, mode )
683 ad_mode_st(path, &mode, &stbuf);
688 * Use mkdir() with mode bits taken from ad_mode().
691 ad_mkdir( path, mode )
700 LOG(log_info, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
703 st_invalid = ad_mode_st(path, &mode, &stbuf);
704 ret = mkdir( path, mode );
705 if (ret || st_invalid)
707 ad_chown(path, &stbuf);
712 /* ----------------- */
713 static int ad_error(struct adouble *ad, int adflags)
715 if ((adflags & ADFLAGS_NOHF)) {
716 /* FIXME double check : set header offset ?*/
719 if ((adflags & ADFLAGS_DF)) {
720 ad_close( ad, ADFLAGS_DF );
725 static int new_rfork(const char *path, struct adouble *ad, int adflags);
730 #define AD_SET(a) a = 0
733 void ad_init(struct adouble *ad, int flags)
735 memset( ad, 0, sizeof( struct adouble ) );
736 ad->ad_flags = flags;
739 /* -------------------
740 * It's not possible to open the header file O_RDONLY -- the read
741 * will fail and return an error. this refcounts things now.
743 int ad_open( path, adflags, oflags, mode, ad )
745 int adflags, oflags, mode;
754 if (ad->ad_inited != AD_INITED) {
757 adf_lock_init(&ad->ad_df);
758 adf_lock_init(&ad->ad_hf);
759 ad->ad_inited = AD_INITED;
763 if ((adflags & ADFLAGS_DF)) {
764 if (ad_dfileno(ad) == -1) {
765 hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
767 st_invalid = ad_mode_st(path, &admode, &st);
768 ad->ad_df.adf_fd =open( path, hoflags, admode );
769 if (ad->ad_df.adf_fd < 0 ) {
770 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
772 ad->ad_df.adf_fd =open( path, hoflags, admode );
775 if ( ad->ad_df.adf_fd < 0)
778 AD_SET(ad->ad_df.adf_off);
779 ad->ad_df.adf_flags = hoflags;
780 if ((oflags & O_CREAT) && !st_invalid) {
781 /* just created, set owner if admin (root) */
786 /* the file is already open... but */
787 if ((oflags & ( O_RDWR | O_WRONLY)) && /* we want write access */
788 !(ad->ad_df.adf_flags & ( O_RDWR | O_WRONLY))) /* and it was denied the first time */
794 * for now ad_open is never called with O_TRUNC or O_EXCL if the file is
795 * already open. Should we check for it? ie
797 * O_TRUNC --> truncate the fork.
798 * idem for ressource fork.
801 open_df = ADFLAGS_DF;
802 ad->ad_df.adf_refcount++;
805 if (!(adflags & ADFLAGS_HF))
808 if (ad_hfileno(ad) != -1) { /* the file is already open */
809 if ((oflags & ( O_RDWR | O_WRONLY)) &&
810 !(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
812 /* don't call with ADFLAGS_HF because we didn't open ressource fork */
813 ad_close( ad, open_df );
819 ad->ad_hf.adf_refcount++;
823 ad_p = ad_path( path, adflags );
825 hoflags = oflags & ~O_CREAT;
826 hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
827 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
828 if (ad->ad_hf.adf_fd < 0 ) {
829 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
830 hoflags = oflags & ~O_CREAT;
831 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
835 if ( ad->ad_hf.adf_fd < 0 ) {
836 if (errno == ENOENT && (oflags & O_CREAT) ) {
838 * We're expecting to create a new adouble header file,
840 * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
843 st_invalid = ad_mode_st(ad_p, &admode, &st);
844 admode = ad_hf_mode(admode);
846 ad->ad_hf.adf_fd = open( ad_p, oflags,admode );
847 if ( ad->ad_hf.adf_fd < 0 ) {
849 * Probably .AppleDouble doesn't exist, try to
852 if (errno == ENOENT && (adflags & ADFLAGS_NOADOUBLE) == 0) {
853 if (NULL == ( slash = strrchr( ad_p, '/' )) ) {
854 return ad_error(ad, adflags);
858 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
859 return ad_error(ad, adflags);
863 st_invalid = ad_mode_st(ad_p, &admode, &st);
864 admode = ad_hf_mode(admode);
865 ad->ad_hf.adf_fd = open( ad_p, oflags, admode);
866 if ( ad->ad_hf.adf_fd < 0 ) {
867 return ad_error(ad, adflags);
870 return ad_error(ad, adflags);
873 ad->ad_hf.adf_flags = oflags;
874 /* just created, set owner if admin owner (root) */
880 return ad_error(ad, adflags);
882 } else if (fstat(ad->ad_hf.adf_fd, &st) == 0 && st.st_size == 0) {
883 /* for 0 length files, treat them as new. */
884 ad->ad_hf.adf_flags = hoflags| O_TRUNC;
886 ad->ad_hf.adf_flags = hoflags;
888 AD_SET(ad->ad_hf.adf_off);
890 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
891 ad->ad_hf.adf_refcount++;
892 if ((ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT ))) {
894 * This is a new adouble header file. Initialize the structure,
895 * instead of reading it.
897 if (new_rfork(path, ad, adflags) < 0) {
898 /* the file is already deleted, perm, whatever, so return an error*/
899 ad_close(ad, adflags);
903 /* Read the adouble header in and parse it.*/
904 if ((ad_header_read( ad , &st) < 0)
905 #if AD_VERSION == AD_VERSION2
906 || (ad_v1tov2(ad, ad_p) < 0)
907 #endif /* AD_VERSION == AD_VERSION2 */
909 ad_close( ad, adflags );
916 /* ----------------------------------- */
917 static int new_rfork(const char *path, struct adouble *ad, int adflags)
922 const struct entry *eid;
926 ad->ad_magic = AD_MAGIC;
927 ad->ad_version = ad->ad_flags;
929 ad->ad_version = AD_VERSION;
931 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
932 memset(ad->ad_data, 0, sizeof(ad->ad_data));
934 #if AD_VERSION == AD_VERSION2
935 if (ad->ad_version == AD_VERSION2)
942 ad->ad_eid[eid->id].ade_off = eid->offset;
943 ad->ad_eid[eid->id].ade_len = eid->len;
947 /* put something sane in the directory finderinfo */
948 if ((adflags & ADFLAGS_DIR)) {
949 /* set default view */
950 ashort = htons(FINDERINFO_CLOSEDVIEW);
951 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
952 &ashort, sizeof(ashort));
954 /* set default creator/type fields */
955 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"TEXT", 4);
956 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"UNIX", 4);
959 /* make things invisible */
960 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
961 ashort = htons(ATTRBIT_INVISIBLE);
962 ad_setattr(ad, ashort);
963 ashort = htons(FINDERINFO_INVISIBLE);
964 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
965 &ashort, sizeof(ashort));
969 if (gettimeofday(&tv, NULL) < 0) {
974 if (stat(path, &st) < 0) {
978 /* put something sane in the date fields */
979 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
980 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
981 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
982 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
986 /* to do this with mmap, we need the hfs fs to understand how to mmap
988 int ad_refresh(struct adouble *ad)
991 if (ad->ad_hf.adf_fd < -1)
994 return ad_header_read(ad, NULL);