2 * $Id: ad_open.c,v 1.31 2003-06-06 20:46:38 srittau 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>
53 #include "ad_private.h"
56 #define MAX(a, b) ((a) < (b) ? (b) : (a))
60 * AppleDouble entry default offsets.
61 * The layout looks like this:
63 * this is the v1 layout:
65 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
67 * we need to change it to look like this:
70 * field length (in bytes)
73 * FILEDATESI 16 replaces FILEI
77 * SHORTNAME 12 8.3 new
80 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
81 * and add in the new fields.
83 * NOTE: the HFS module will need similar modifications to interact with
87 #define ADEDOFF_MAGIC (0)
88 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
89 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
90 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
92 /* initial lengths of some of the fields */
93 #define ADEDLEN_INIT 0
95 /* make sure we don't redefine ADEDOFF_FILEI */
98 #endif /* ADEDOFF_FILEI */
100 #define ADEID_NUM_V1 5
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 ADEID_NUM_V2 9
111 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
112 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
113 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
114 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
115 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
116 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
117 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
118 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
119 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
123 /* we keep local copies of a bunch of stuff so that we can initialize things
126 /* Bits in the finderinfo data.
127 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
129 #define FINDERINFO_CUSTOMICON 0x4
130 #define FINDERINFO_CLOSEDVIEW 0x100
132 /* offsets in finderinfo */
133 #define FINDERINFO_FRTYPEOFF 0
134 #define FINDERINFO_FRCREATOFF 4
135 #define FINDERINFO_FRFLAGOFF 8
136 #define FINDERINFO_FRVIEWOFF 14
138 /* invisible bit for dot files */
139 #define ATTRBIT_INVISIBLE (1 << 0)
140 #define FINDERINFO_INVISIBLE (1 << 14)
142 /* this is to prevent changing timezones from causing problems with
143 localtime volumes. the screw-up is 30 years. we use a delta of 5
145 #define TIMEWARP_DELTA 157680000
149 u_int32_t id, offset, len;
152 #if AD_VERSION == AD_VERSION1
153 static const struct entry entry_order[] = {
154 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT},
155 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT},
156 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI},
157 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI},
158 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT},
161 #else /* AD_VERSION == AD_VERSION2 */
162 static const struct entry entry_order[] = {
163 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
164 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
165 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
166 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
167 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
168 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
169 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
170 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
171 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
174 #endif /* AD_VERSION == AD_VERSION2 */
176 #if AD_VERSION == AD_VERSION2
179 static __inline__ int ad_v1tov2(struct adouble *ad, const char *path)
186 /* check to see if we should convert this header. */
187 if (!path || (ad->ad_version != AD_VERSION1))
190 /* convert from v1 to v2. what does this mean?
191 * 1) change FILEI into FILEDATESI
192 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
193 * 3) move FILEI attributes into AFPFILEI
194 * 4) initialize ACCESS field of FILEDATESI.
196 * so, we need 4*12 (entry ids) + 12 (shortname) + 4 (afpfilei) +
197 * 4 (did) + 8 (prodosi) = 76 more bytes. */
199 #define SHIFTDATA (AD_DATASZ2 - AD_DATASZ1)
201 /* bail if we can't get a lock */
202 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
205 if ((fd = open(path, O_RDWR)) < 0)
208 if (fstat(fd, &st) ||
209 ftruncate(fd, st.st_size + SHIFTDATA) < 0) {
213 /* last place for failure. */
214 if ((void *) (buf = (char *)
215 mmap(NULL, st.st_size + SHIFTDATA,
216 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
221 off = ad->ad_eid[ADEID_RFORK].ade_off;
223 /* move the RFORK. this assumes that the RFORK is at the end */
224 memmove(buf + off + SHIFTDATA, buf + off,
225 ad->ad_eid[ADEID_RFORK].ade_len);
227 munmap(buf, st.st_size + SHIFTDATA);
230 /* now, fix up our copy of the header */
231 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
233 /* replace FILEI with FILEDATESI */
234 ad_getattr(ad, &attr);
235 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
236 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
237 ad->ad_eid[ADEID_FILEI].ade_off = 0;
238 ad->ad_eid[ADEID_FILEI].ade_len = 0;
240 /* add in the new entries */
241 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
242 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
243 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
244 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
245 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
246 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
247 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
248 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
250 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
251 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
252 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
253 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
254 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
257 ad->ad_version = AD_VERSION2;
259 /* move our data buffer to make space for the new entries. */
260 memmove(ad->ad_data + ADEDOFF_NAME_V2, ad->ad_data + ADEDOFF_NAME_V1,
261 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
263 /* now, fill in the space with appropriate stuff. we're
264 operating as a v2 file now. */
265 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
266 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
267 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
268 ad_setattr(ad, attr);
269 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
270 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
272 /* rebuild the header and cleanup */
273 ad_flush(ad, ADFLAGS_HF );
274 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
279 ftruncate(fd, st.st_size);
283 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
287 #endif /* AD_VERSION == AD_VERSION2 */
289 mode_t ad_hf_mode (mode_t mode)
291 /* fnctl lock need write access */
292 if ((mode & S_IRUSR))
294 if ((mode & S_IRGRP))
296 if ((mode & S_IROTH))
298 /* if write mode set add read mode */
299 if ((mode & S_IWUSR))
301 if ((mode & S_IWGRP))
303 if ((mode & S_IWOTH))
309 /* -------------------------------------
312 static void parse_entries(struct adouble *ad, char *buf,
315 u_int32_t eid, len, off;
318 /* now, read in the entry bits */
319 for (; nentries > 0; nentries-- ) {
320 memcpy(&eid, buf, sizeof( eid ));
322 buf += sizeof( eid );
323 memcpy(&off, buf, sizeof( off ));
325 buf += sizeof( off );
326 memcpy(&len, buf, sizeof( len ));
328 buf += sizeof( len );
330 if ( 0 < eid && eid < ADEID_MAX ) {
331 ad->ad_eid[ eid ].ade_off = off;
332 ad->ad_eid[ eid ].ade_len = len;
333 } else if (!warning) {
335 LOG(log_debug, logtype_default, "ad_refresh: nentries %hd eid %d\n",
342 /* this reads enough of the header so that we can figure out all of
343 * the entry lengths and offsets. once that's done, we just read/mmap
344 * the rest of the header in.
346 * NOTE: we're assuming that the resource fork is kept at the end of
347 * the file. also, mmapping won't work for the hfs fs until it
348 * understands how to mmap header files. */
349 static int ad_header_read(struct adouble *ad, struct stat *hst)
351 char *buf = ad->ad_data;
355 static int warning = 0;
358 /* read the header */
359 if ((header_len = adf_pread( &ad->ad_hf, buf, sizeof(ad->ad_data), 0)) < 0) {
362 if (header_len < AD_HEADER_LEN) {
367 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
368 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
370 /* tag broken v1 headers. just assume they're all right.
371 * we detect two cases: null magic/version
372 * byte swapped magic/version
373 * XXX: in the future, you'll need the v1compat flag.
374 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
375 if (!ad->ad_magic && !ad->ad_version) {
377 LOG(log_debug, logtype_default, "notice: fixing up null v1 magic/version.");
380 ad->ad_magic = AD_MAGIC;
381 ad->ad_version = AD_VERSION1;
383 } else if (ad->ad_magic == AD_MAGIC && ad->ad_version == AD_VERSION1) {
385 LOG(log_debug, logtype_default, "notice: fixing up byte-swapped v1 magic/version.");
390 ad->ad_magic = ntohl( ad->ad_magic );
391 ad->ad_version = ntohl( ad->ad_version );
394 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
395 #if AD_VERSION == AD_VERSION2
396 && (ad->ad_version != AD_VERSION2)
397 #endif /* AD_VERSION == AD_VERSION2 */
400 LOG(log_debug, logtype_default, "ad_open: can't parse AppleDouble header.");
404 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
405 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
406 nentries = ntohs( nentries );
408 /* read in all the entry headers. if we have more than the
409 * maximum, just hope that the rfork is specified early on. */
410 len = nentries*AD_ENTRY_LEN;
412 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
413 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
415 buf += AD_HEADER_LEN;
416 if (len > header_len - AD_HEADER_LEN) {
418 LOG(log_debug, logtype_default, "ad_header_read: can't read entry info.");
422 /* figure out all of the entry offsets and lengths. if we aren't
423 * able to read a resource fork entry, bail. */
424 nentries = len / AD_ENTRY_LEN;
425 parse_entries(ad, buf, nentries);
426 if (!ad_getentryoff(ad, ADEID_RFORK)
427 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
429 LOG(log_debug, logtype_default, "ad_header_read: problem with rfork entry offset.");
433 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
435 LOG(log_debug, logtype_default, "ad_header_read: can't read in entries.");
441 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
442 return 1; /* fail silently */
445 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
447 /* fix up broken dates */
448 if (ad->ad_version == AD_VERSION1) {
451 /* check to see if the ad date is wrong. just see if we have
452 * a modification date in the future. */
453 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
454 (aint > TIMEWARP_DELTA + hst->st_mtime)) {
455 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
456 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
457 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
458 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
459 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
468 * Put the .AppleDouble where it needs to be:
472 * \ b/.AppleDouble/.Parent
475 ad_path( path, adflags )
479 static char pathbuf[ MAXPATHLEN + 1];
480 char c, *slash, buf[MAXPATHLEN + 1];
482 strncpy(buf, path, MAXPATHLEN);
483 if ( adflags & ADFLAGS_DIR ) {
484 strncpy( pathbuf, buf, MAXPATHLEN );
485 if ( *buf != '\0' ) {
486 strcat( pathbuf, "/" );
490 if (NULL != ( slash = strrchr( buf, '/' )) ) {
493 strncpy( pathbuf, buf, MAXPATHLEN);
500 strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
501 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
507 * Support inherited protection modes for AppleDouble files. The supplied
508 * mode is ANDed with the parent directory's mask value in lieu of "umask",
509 * and that value is returned.
512 #define DEFMASK 07700 /* be conservative */
518 static char modebuf[ MAXPATHLEN + 1];
521 if ( strlen( path ) >= MAXPATHLEN ) {
522 errno = ENAMETOOLONG;
523 return NULL; /* can't do it */
527 * For a path with directories in it, remove the final component
528 * (path or subdirectory name) to get the name we want to stat.
529 * For a path which is just a filename, use "." instead.
531 strcpy( modebuf, path );
532 if (NULL != ( slash = strrchr( modebuf, '/' )) ) {
533 *slash = '\0'; /* remove pathname component */
535 modebuf[0] = '.'; /* use current directory */
541 /* ---------------- */
542 static uid_t default_uid = -1;
544 int ad_setfuid(const uid_t id)
550 /* ---------------- */
551 uid_t ad_getfuid(void)
557 return inode of path parent directory
559 static int ad_stat(const char *path, struct stat *stbuf)
568 return stat( p, stbuf );
572 if we are root change path user/ group
573 It can be a native function for BSD cf. FAQ.Q10
574 path: pathname to chown
575 stbuf: parent directory inode
577 use fstat and fchown or lchown with linux?
579 #define EMULATE_SUIDDIR
581 static int ad_chown(const char *path, struct stat *stbuf)
584 #ifdef EMULATE_SUIDDIR
587 if (default_uid != -1) {
588 /* we are root (admin) */
589 id = (default_uid)?default_uid:stbuf->st_uid;
590 ret = chown( path, id, stbuf->st_gid );
597 return access right and inode of path parent directory
599 static int ad_mode_st(const char *path, int *mode, struct stat *stbuf)
604 if (ad_stat(path, stbuf) != 0) {
608 *mode &= stbuf->st_mode;
613 return access right of path parent directory
616 ad_mode( path, mode )
621 ad_mode_st(path, &mode, &stbuf);
626 * Use mkdir() with mode bits taken from ad_mode().
629 ad_mkdir( path, mode )
638 LOG(log_info, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
641 st_invalid = ad_mode_st(path, &mode, &stbuf);
642 ret = mkdir( path, mode );
643 if (ret || st_invalid)
645 ad_chown(path, &stbuf);
650 /* ----------------- */
651 static int ad_error(struct adouble *ad, int adflags)
653 if ((adflags & ADFLAGS_NOHF)) {
654 /* FIXME double check : set header offset ?*/
657 if ((adflags & ADFLAGS_DF)) {
658 ad_close( ad, ADFLAGS_DF );
663 static int new_rfork(const char *path, struct adouble *ad, int adflags);
668 #define AD_SET(a) a = 0
671 * It's not possible to open the header file O_RDONLY -- the read
672 * will fail and return an error. this refcounts things now.
674 int ad_open( path, adflags, oflags, mode, ad )
676 int adflags, oflags, mode;
685 if (ad->ad_inited != AD_INITED) {
688 adf_lock_init(&ad->ad_df);
689 adf_lock_init(&ad->ad_hf);
690 ad->ad_inited = AD_INITED;
694 if ((adflags & ADFLAGS_DF)) {
695 if (ad_dfileno(ad) == -1) {
696 hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
698 st_invalid = ad_mode_st(path, &admode, &st);
699 ad->ad_df.adf_fd =open( path, hoflags, admode );
700 if (ad->ad_df.adf_fd < 0 ) {
701 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
703 ad->ad_df.adf_fd =open( path, hoflags, admode );
706 if ( ad->ad_df.adf_fd < 0)
709 AD_SET(ad->ad_df.adf_off);
710 ad->ad_df.adf_flags = hoflags;
711 if ((oflags & O_CREAT) && !st_invalid) {
712 /* just created, set owner if admin (root) */
717 /* the file is already open... but */
718 if ((oflags & ( O_RDWR | O_WRONLY)) && /* we want write access */
719 !(ad->ad_df.adf_flags & ( O_RDWR | O_WRONLY))) /* and it was denied the first time */
725 * for now ad_open is never called with O_TRUNC or O_EXCL if the file is
726 * already open. Should we check for it? ie
728 * O_TRUNC --> truncate the fork.
729 * idem for ressource fork.
732 open_df = ADFLAGS_DF;
733 ad->ad_df.adf_refcount++;
736 if (!(adflags & ADFLAGS_HF))
739 if (ad_hfileno(ad) != -1) { /* the file is already open */
740 if ((oflags & ( O_RDWR | O_WRONLY)) &&
741 !(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
743 /* don't call with ADFLAGS_HF because we didn't open ressource fork */
744 ad_close( ad, open_df );
750 ad->ad_hf.adf_refcount++;
754 ad_p = ad_path( path, adflags );
756 hoflags = oflags & ~O_CREAT;
757 hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
758 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
759 if (ad->ad_hf.adf_fd < 0 ) {
760 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
761 hoflags = oflags & ~O_CREAT;
762 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
766 if ( ad->ad_hf.adf_fd < 0 ) {
767 if (errno == ENOENT && (oflags & O_CREAT) ) {
769 * We're expecting to create a new adouble header file,
771 * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
774 st_invalid = ad_mode_st(ad_p, &admode, &st);
775 admode = ad_hf_mode(admode);
777 ad->ad_hf.adf_fd = open( ad_p, oflags,admode );
778 if ( ad->ad_hf.adf_fd < 0 ) {
780 * Probably .AppleDouble doesn't exist, try to
783 if (errno == ENOENT && (adflags & ADFLAGS_NOADOUBLE) == 0) {
784 if (NULL == ( slash = strrchr( ad_p, '/' )) ) {
785 return ad_error(ad, adflags);
789 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
790 return ad_error(ad, adflags);
794 st_invalid = ad_mode_st(ad_p, &admode, &st);
795 admode = ad_hf_mode(admode);
796 ad->ad_hf.adf_fd = open( ad_p, oflags, admode);
797 if ( ad->ad_hf.adf_fd < 0 ) {
798 return ad_error(ad, adflags);
801 return ad_error(ad, adflags);
804 ad->ad_hf.adf_flags = oflags;
805 /* just created, set owner if admin owner (root) */
811 return ad_error(ad, adflags);
813 } else if (fstat(ad->ad_hf.adf_fd, &st) == 0 && st.st_size == 0) {
814 /* for 0 length files, treat them as new. */
815 ad->ad_hf.adf_flags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR | O_TRUNC;
817 ad->ad_hf.adf_flags = hoflags;
819 AD_SET(ad->ad_hf.adf_off);
821 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
822 ad->ad_hf.adf_refcount++;
823 if ((ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT ))) {
825 * This is a new adouble header file. Initialize the structure,
826 * instead of reading it.
828 if (new_rfork(path, ad, adflags) < 0) {
829 /* the file is already deleted, perm, whatever, so return an error*/
830 ad_close(ad, adflags);
834 /* Read the adouble header in and parse it.*/
835 if ((ad_header_read( ad , &st) < 0)
836 #if AD_VERSION == AD_VERSION2
837 || (ad_v1tov2(ad, ad_p) < 0)
838 #endif /* AD_VERSION == AD_VERSION2 */
840 ad_close( ad, adflags );
847 /* ----------------------------------- */
848 static int new_rfork(const char *path, struct adouble *ad, int adflags)
853 const struct entry *eid;
857 ad->ad_magic = AD_MAGIC;
858 ad->ad_version = AD_VERSION;
860 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
861 memset(ad->ad_data, 0, sizeof(ad->ad_data));
865 ad->ad_eid[eid->id].ade_off = eid->offset;
866 ad->ad_eid[eid->id].ade_len = eid->len;
870 /* put something sane in the directory finderinfo */
871 if (adflags & ADFLAGS_DIR) {
872 /* set default view */
873 ashort = htons(FINDERINFO_CLOSEDVIEW);
874 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
875 &ashort, sizeof(ashort));
877 /* set default creator/type fields */
878 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"TEXT", 4);
879 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"UNIX", 4);
882 /* make things invisible */
883 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
884 ashort = htons(ATTRBIT_INVISIBLE);
885 ad_setattr(ad, ashort);
886 ashort = htons(FINDERINFO_INVISIBLE);
887 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
888 &ashort, sizeof(ashort));
892 if (gettimeofday(&tv, NULL) < 0) {
897 if (stat(path, &st) < 0) {
901 /* put something sane in the date fields */
902 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
903 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
904 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
905 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
909 /* to do this with mmap, we need the hfs fs to understand how to mmap
911 int ad_refresh(struct adouble *ad)
914 if (ad->ad_hf.adf_fd < -1)
917 return ad_header_read(ad, NULL);