2 * $Id: ad_open.c,v 1.30.6.6 2004-02-06 13:39:52 bfernhomberg 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)
121 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
123 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
125 /* we keep local copies of a bunch of stuff so that we can initialize things
128 /* Bits in the finderinfo data.
129 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
131 #define FINDERINFO_CUSTOMICON 0x4
132 #define FINDERINFO_CLOSEDVIEW 0x100
134 /* offsets in finderinfo */
135 #define FINDERINFO_FRTYPEOFF 0
136 #define FINDERINFO_FRCREATOFF 4
137 #define FINDERINFO_FRFLAGOFF 8
138 #define FINDERINFO_FRVIEWOFF 14
140 /* invisible bit for dot files */
141 #define ATTRBIT_INVISIBLE (1 << 0)
142 #define FINDERINFO_INVISIBLE (1 << 14)
144 /* this is to prevent changing timezones from causing problems with
145 localtime volumes. the screw-up is 30 years. we use a delta of 5
147 #define TIMEWARP_DELTA 157680000
151 u_int32_t id, offset, len;
154 static const struct entry entry_order1[ADEID_NUM_V1 +1] = {
155 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT}, /* 3 */
156 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT}, /* 4 */
157 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI}, /* 7 */
158 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI}, /* 9 */
159 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT}, /* 2 */
163 #if AD_VERSION == AD_VERSION1
164 #define DISK_EID(ad, a) (a)
166 #else /* AD_VERSION == AD_VERSION2 */
168 static u_int32_t get_eid(struct adouble *ad, u_int32_t eid)
172 if (ad->ad_version == AD_VERSION1)
175 return ADEID_PRIVDEV;
177 return ADEID_PRIVINO;
179 return ADEID_PRIVSYN;
186 #define DISK_EID(ad, a) get_eid(ad, a)
188 static const struct entry entry_order2[ADEID_NUM_V2 +1] = {
189 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
190 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
191 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
192 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
193 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
194 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
195 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
196 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
197 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
198 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
199 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
200 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
201 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
205 #endif /* AD_VERSION == AD_VERSION2 */
207 #if AD_VERSION == AD_VERSION2
209 static int ad_update(struct adouble *ad, const char *path)
212 u_int16_t nentries = 0;
213 off_t off, shiftdata=0;
214 const struct entry *eid;
215 static off_t entry_len[ADEID_MAX];
216 static char databuf[ADEID_MAX][256], *buf;
219 /* check to see if we should convert this header. */
220 if (!path || (ad->ad_version != AD_VERSION2))
223 if (ad->ad_eid[ADEID_RFORK].ade_off)
224 shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
226 memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof( nentries ));
227 nentries = ntohs( nentries );
229 if ( shiftdata == 0 && nentries == ADEID_NUM_V2)
232 memset(entry_len, 0, sizeof(entry_len));
233 memset(databuf, 0, sizeof(databuf));
235 /* bail if we can't get a lock */
236 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
239 if ((fd = open(path, O_RDWR)) < 0)
242 if (fstat(fd, &st) ||
243 sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
246 if (st.st_size > 0x7fffffff) {
247 LOG(log_debug, logtype_default, "ad_update: file '%s' too big for update.", path);
250 /* last place for failure. */
251 if ((void *) (buf = (char *)
252 mmap(NULL, st.st_size + shiftdata,
253 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
258 off = ad->ad_eid[ADEID_RFORK].ade_off;
260 /* move the RFORK. this assumes that the RFORK is at the end */
262 memmove(buf + ADEDOFF_RFORK_V2, buf + off, ad->ad_eid[ADEID_RFORK].ade_len);
265 munmap(buf, st.st_size + shiftdata);
268 /* now, fix up our copy of the header */
269 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
271 /* save the header entries */
274 if( ad->ad_eid[eid->id].ade_off != 0) {
275 if ( eid->id > 2 && ad->ad_eid[eid->id].ade_len < 256)
276 memcpy( databuf[eid->id], ad->ad_data +ad->ad_eid[eid->id].ade_off, ad->ad_eid[eid->id].ade_len);
277 entry_len[eid->id] = ad->ad_eid[eid->id].ade_len;
282 memset(ad->ad_data + AD_HEADER_LEN, 0, AD_DATASZ - AD_HEADER_LEN);
284 /* copy the saved entries to the new header */
287 if ( eid->id > 2 && entry_len[eid->id] > 0) {
288 memcpy(ad->ad_data+eid->offset, databuf[eid->id], entry_len[eid->id]);
290 ad->ad_eid[eid->id].ade_off = eid->offset;
291 ad->ad_eid[eid->id].ade_len = entry_len[eid->id];
295 /* rebuild the header and cleanup */
296 ad_flush(ad, ADFLAGS_HF );
297 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
299 LOG(log_debug, logtype_default, "updated AD2 header %s", path);
304 sys_ftruncate(fd, st.st_size);
308 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
314 /* FIXME work only if < 2GB */
315 static int ad_v1tov2(struct adouble *ad, const char *path)
321 /* use resource fork offset from file */
324 /* check to see if we should convert this header. */
325 if (!path || (ad->ad_version != AD_VERSION1))
328 /* we want version1 anyway */
329 if (ad->ad_flags == AD_VERSION1)
334 /* we don't really know what we want */
335 ad->ad_flags = ad->ad_version;
339 /* convert from v1 to v2. what does this mean?
340 * 1) change FILEI into FILEDATESI
341 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
342 * 3) move FILEI attributes into AFPFILEI
343 * 4) initialize ACCESS field of FILEDATESI.
344 * 5) move the resource fork
347 /* bail if we can't get a lock */
348 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
351 if ((fd = open(path, O_RDWR)) < 0)
354 if (ad->ad_eid[ADEID_RFORK].ade_off) {
355 shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
358 shiftdata = ADEDOFF_RFORK_V2 -ADEDOFF_RFORK_V1; /* 136 */
361 if (fstat(fd, &st) ||
362 sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
365 if (st.st_size > 0x7fffffff) {
366 LOG(log_debug, logtype_default, "ad_v1tov2: file too big.");
370 /* last place for failure. */
371 if ((void *) (buf = (char *)
372 mmap(NULL, st.st_size + shiftdata,
373 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
378 off = ad->ad_eid[ADEID_RFORK].ade_off;
380 /* move the RFORK. this assumes that the RFORK is at the end */
382 memmove(buf + ADEDOFF_RFORK_V2, buf + off, ad->ad_eid[ADEID_RFORK].ade_len);
385 munmap(buf, st.st_size + shiftdata);
388 /* now, fix up our copy of the header */
389 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
391 /* replace FILEI with FILEDATESI */
392 ad_getattr(ad, &attr);
393 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
394 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
395 ad->ad_eid[ADEID_FILEI].ade_off = 0;
396 ad->ad_eid[ADEID_FILEI].ade_len = 0;
398 /* add in the new entries */
399 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
400 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
401 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
402 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
403 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
404 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
405 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
406 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
408 ad->ad_eid[ADEID_PRIVDEV].ade_off = ADEDOFF_PRIVDEV;
409 ad->ad_eid[ADEID_PRIVDEV].ade_len = ADEDLEN_INIT;
410 ad->ad_eid[ADEID_PRIVINO].ade_off = ADEDOFF_PRIVINO;
411 ad->ad_eid[ADEID_PRIVINO].ade_len = ADEDLEN_INIT;
412 ad->ad_eid[ADEID_PRIVSYN].ade_off = ADEDOFF_PRIVSYN;
413 ad->ad_eid[ADEID_PRIVSYN].ade_len = ADEDLEN_INIT;
414 ad->ad_eid[ADEID_PRIVID].ade_off = ADEDOFF_PRIVID;
415 ad->ad_eid[ADEID_PRIVID].ade_len = ADEDLEN_INIT;
417 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
418 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
419 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
420 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
421 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
424 ad->ad_version = AD_VERSION2;
426 /* move our data buffer to make space for the new entries. */
427 memmove(ad->ad_data + ADEDOFF_NAME_V2, ad->ad_data + ADEDOFF_NAME_V1,
428 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
430 /* now, fill in the space with appropriate stuff. we're
431 operating as a v2 file now. */
432 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
433 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
434 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
435 ad_setattr(ad, attr);
436 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
437 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
439 /* rebuild the header and cleanup */
440 ad_flush(ad, ADFLAGS_HF );
441 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
446 sys_ftruncate(fd, st.st_size);
450 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
454 #endif /* AD_VERSION == AD_VERSION2 */
457 mode_t ad_hf_mode (mode_t mode)
459 /* fnctl lock need write access */
460 if ((mode & S_IRUSR))
462 if ((mode & S_IRGRP))
464 if ((mode & S_IROTH))
466 /* if write mode set add read mode */
467 if ((mode & S_IWUSR))
469 if ((mode & S_IWGRP))
471 if ((mode & S_IWOTH))
479 /* -------------------------------------
482 static void parse_entries(struct adouble *ad, char *buf,
485 u_int32_t eid, len, off;
488 /* now, read in the entry bits */
489 for (; nentries > 0; nentries-- ) {
490 memcpy(&eid, buf, sizeof( eid ));
491 eid = DISK_EID(ad, ntohl( eid ));
492 buf += sizeof( eid );
493 memcpy(&off, buf, sizeof( off ));
495 buf += sizeof( off );
496 memcpy(&len, buf, sizeof( len ));
498 buf += sizeof( len );
500 if ( 0 < eid && eid < ADEID_MAX ) {
501 ad->ad_eid[ eid ].ade_off = off;
502 ad->ad_eid[ eid ].ade_len = len;
503 } else if (!warning) {
505 LOG(log_debug, logtype_default, "ad_refresh: nentries %hd eid %d\n",
512 /* this reads enough of the header so that we can figure out all of
513 * the entry lengths and offsets. once that's done, we just read/mmap
514 * the rest of the header in.
516 * NOTE: we're assuming that the resource fork is kept at the end of
517 * the file. also, mmapping won't work for the hfs fs until it
518 * understands how to mmap header files. */
519 static int ad_header_read(struct adouble *ad, struct stat *hst)
521 char *buf = ad->ad_data;
525 static int warning = 0;
528 /* read the header */
529 if ((header_len = adf_pread( &ad->ad_hf, buf, sizeof(ad->ad_data), 0)) < 0) {
532 if (header_len < AD_HEADER_LEN) {
537 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
538 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
540 /* tag broken v1 headers. just assume they're all right.
541 * we detect two cases: null magic/version
542 * byte swapped magic/version
543 * XXX: in the future, you'll need the v1compat flag.
544 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
545 if (!ad->ad_magic && !ad->ad_version) {
547 LOG(log_debug, logtype_default, "notice: fixing up null v1 magic/version.");
550 ad->ad_magic = AD_MAGIC;
551 ad->ad_version = AD_VERSION1;
553 } else if (ad->ad_magic == AD_MAGIC && ad->ad_version == AD_VERSION1) {
555 LOG(log_debug, logtype_default, "notice: fixing up byte-swapped v1 magic/version.");
560 ad->ad_magic = ntohl( ad->ad_magic );
561 ad->ad_version = ntohl( ad->ad_version );
564 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
565 #if AD_VERSION == AD_VERSION2
566 && (ad->ad_version != AD_VERSION2)
567 #endif /* AD_VERSION == AD_VERSION2 */
570 LOG(log_debug, logtype_default, "ad_open: can't parse AppleDouble header.");
574 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
575 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
576 nentries = ntohs( nentries );
578 /* read in all the entry headers. if we have more than the
579 * maximum, just hope that the rfork is specified early on. */
580 len = nentries*AD_ENTRY_LEN;
582 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
583 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
585 buf += AD_HEADER_LEN;
586 if (len > header_len - AD_HEADER_LEN) {
588 LOG(log_debug, logtype_default, "ad_header_read: can't read entry info.");
592 /* figure out all of the entry offsets and lengths. if we aren't
593 * able to read a resource fork entry, bail. */
594 nentries = len / AD_ENTRY_LEN;
595 parse_entries(ad, buf, nentries);
596 if (!ad_getentryoff(ad, ADEID_RFORK)
597 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
599 LOG(log_debug, logtype_default, "ad_header_read: problem with rfork entry offset.");
603 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
605 LOG(log_debug, logtype_default, "ad_header_read: can't read in entries.");
611 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
612 return 1; /* fail silently */
615 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
617 /* fix up broken dates */
618 if (ad->ad_version == AD_VERSION1) {
621 /* check to see if the ad date is wrong. just see if we have
622 * a modification date in the future. */
623 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
624 (aint > TIMEWARP_DELTA + hst->st_mtime)) {
625 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
626 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
627 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
628 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
629 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
638 * Put the .AppleDouble where it needs to be:
642 * \ b/.AppleDouble/.Parent
645 ad_path( path, adflags )
649 static char pathbuf[ MAXPATHLEN + 1];
650 char c, *slash, buf[MAXPATHLEN + 1];
652 strncpy(buf, path, MAXPATHLEN);
653 if ( adflags & ADFLAGS_DIR ) {
654 strncpy( pathbuf, buf, MAXPATHLEN );
655 if ( *buf != '\0' ) {
656 strcat( pathbuf, "/" );
660 if (NULL != ( slash = strrchr( buf, '/' )) ) {
663 strncpy( pathbuf, buf, MAXPATHLEN);
670 strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
671 strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
677 * Support inherited protection modes for AppleDouble files. The supplied
678 * mode is ANDed with the parent directory's mask value in lieu of "umask",
679 * and that value is returned.
682 #define DEFMASK 07700 /* be conservative */
688 static char modebuf[ MAXPATHLEN + 1];
692 if ( (len = strlen( path )) >= MAXPATHLEN ) {
693 errno = ENAMETOOLONG;
694 return NULL; /* can't do it */
698 * For a path with directories in it, remove the final component
699 * (path or subdirectory name) to get the name we want to stat.
700 * For a path which is just a filename, use "." instead.
702 strcpy( modebuf, path );
703 slash = strrchr( modebuf, '/' );
704 /* is last char a '/' */
705 if (slash && slash[1] == 0) {
706 while (modebuf < slash && slash[-1] == '/') {
709 if (modebuf < slash) {
710 *slash = '\0'; /* remove pathname component */
711 slash = strrchr( modebuf, '/' );
715 *slash = '\0'; /* remove pathname component */
717 modebuf[0] = '.'; /* use current directory */
723 /* ---------------- */
724 static uid_t default_uid = -1;
726 int ad_setfuid(const uid_t id)
732 /* ---------------- */
733 uid_t ad_getfuid(void)
739 return inode of path parent directory
741 int ad_stat(const char *path, struct stat *stbuf)
750 return stat( p, stbuf );
754 if we are root change path user/ group
755 It can be a native function for BSD cf. FAQ.Q10
756 path: pathname to chown
757 stbuf: parent directory inode
759 use fstat and fchown or lchown with linux?
761 #define EMULATE_SUIDDIR
763 static int ad_chown(const char *path, struct stat *stbuf)
766 #ifdef EMULATE_SUIDDIR
769 if (default_uid != -1) {
770 /* we are root (admin) */
771 id = (default_uid)?default_uid:stbuf->st_uid;
772 ret = chown( path, id, stbuf->st_gid );
779 return access right and inode of path parent directory
781 static int ad_mode_st(const char *path, int *mode, struct stat *stbuf)
786 if (ad_stat(path, stbuf) != 0) {
790 *mode &= stbuf->st_mode;
795 return access right of path parent directory
798 ad_mode( path, mode )
803 ad_mode_st(path, &mode, &stbuf);
808 * Use mkdir() with mode bits taken from ad_mode().
811 ad_mkdir( path, mode )
820 LOG(log_info, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
823 st_invalid = ad_mode_st(path, &mode, &stbuf);
824 ret = mkdir( path, mode );
825 if (ret || st_invalid)
827 ad_chown(path, &stbuf);
832 /* ----------------- */
833 static int ad_error(struct adouble *ad, int adflags)
835 if ((adflags & ADFLAGS_NOHF)) {
836 /* FIXME double check : set header offset ?*/
839 if ((adflags & ADFLAGS_DF)) {
840 ad_close( ad, ADFLAGS_DF );
845 static int new_rfork(const char *path, struct adouble *ad, int adflags);
850 #define AD_SET(a) a = 0
853 void ad_init(struct adouble *ad, int flags)
855 memset( ad, 0, sizeof( struct adouble ) );
856 ad->ad_flags = flags;
859 /* -------------------
860 * It's not possible to open the header file O_RDONLY -- the read
861 * will fail and return an error. this refcounts things now.
863 int ad_open( path, adflags, oflags, mode, ad )
865 int adflags, oflags, mode;
874 if (ad->ad_inited != AD_INITED) {
877 adf_lock_init(&ad->ad_df);
878 adf_lock_init(&ad->ad_hf);
879 ad->ad_inited = AD_INITED;
883 if ((adflags & ADFLAGS_DF)) {
884 if (ad_dfileno(ad) == -1) {
885 hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
887 st_invalid = ad_mode_st(path, &admode, &st);
888 ad->ad_df.adf_fd =open( path, hoflags, admode );
889 if (ad->ad_df.adf_fd < 0 ) {
890 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
892 ad->ad_df.adf_fd =open( path, hoflags, admode );
895 if ( ad->ad_df.adf_fd < 0)
898 AD_SET(ad->ad_df.adf_off);
899 ad->ad_df.adf_flags = hoflags;
900 if ((oflags & O_CREAT) && !st_invalid) {
901 /* just created, set owner if admin (root) */
906 /* the file is already open... but */
907 if ((oflags & ( O_RDWR | O_WRONLY)) && /* we want write access */
908 !(ad->ad_df.adf_flags & ( O_RDWR | O_WRONLY))) /* and it was denied the first time */
914 * for now ad_open is never called with O_TRUNC or O_EXCL if the file is
915 * already open. Should we check for it? ie
917 * O_TRUNC --> truncate the fork.
918 * idem for ressource fork.
921 open_df = ADFLAGS_DF;
922 ad->ad_df.adf_refcount++;
925 if (!(adflags & ADFLAGS_HF))
928 if (ad_hfileno(ad) != -1) { /* the file is already open */
929 if ((oflags & ( O_RDWR | O_WRONLY)) &&
930 !(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
932 /* don't call with ADFLAGS_HF because we didn't open ressource fork */
933 ad_close( ad, open_df );
939 ad->ad_hf.adf_refcount++;
943 ad_p = ad_path( path, adflags );
945 hoflags = oflags & ~O_CREAT;
946 hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
947 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
948 if (ad->ad_hf.adf_fd < 0 ) {
949 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
950 hoflags = oflags & ~O_CREAT;
951 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
955 if ( ad->ad_hf.adf_fd < 0 ) {
956 if (errno == ENOENT && (oflags & O_CREAT) ) {
958 * We're expecting to create a new adouble header file,
960 * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
963 st_invalid = ad_mode_st(ad_p, &admode, &st);
964 admode = ad_hf_mode(admode);
966 ad->ad_hf.adf_fd = open( ad_p, oflags,admode );
967 if ( ad->ad_hf.adf_fd < 0 ) {
969 * Probably .AppleDouble doesn't exist, try to
972 if (errno == ENOENT && (adflags & ADFLAGS_NOADOUBLE) == 0) {
973 if (NULL == ( slash = strrchr( ad_p, '/' )) ) {
974 return ad_error(ad, adflags);
978 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
979 return ad_error(ad, adflags);
983 st_invalid = ad_mode_st(ad_p, &admode, &st);
984 admode = ad_hf_mode(admode);
985 ad->ad_hf.adf_fd = open( ad_p, oflags, admode);
986 if ( ad->ad_hf.adf_fd < 0 ) {
987 return ad_error(ad, adflags);
990 return ad_error(ad, adflags);
993 ad->ad_hf.adf_flags = oflags;
994 /* just created, set owner if admin owner (root) */
1000 return ad_error(ad, adflags);
1002 } else if (fstat(ad->ad_hf.adf_fd, &st) == 0 && st.st_size == 0) {
1003 /* for 0 length files, treat them as new. */
1004 ad->ad_hf.adf_flags = hoflags| O_TRUNC;
1006 ad->ad_hf.adf_flags = hoflags;
1008 AD_SET(ad->ad_hf.adf_off);
1010 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1011 ad->ad_hf.adf_refcount++;
1012 if ((ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT ))) {
1014 * This is a new adouble header file. Initialize the structure,
1015 * instead of reading it.
1017 if (new_rfork(path, ad, adflags) < 0) {
1018 /* the file is already deleted, perm, whatever, so return an error*/
1019 ad_close(ad, adflags);
1023 /* Read the adouble header in and parse it.*/
1024 if ((ad_header_read( ad , &st) < 0)
1025 #if AD_VERSION == AD_VERSION2
1026 || (ad_v1tov2(ad, ad_p) < 0) || (ad_update(ad, ad_p) < 0)
1027 #endif /* AD_VERSION == AD_VERSION2 */
1029 ad_close( ad, adflags );
1036 /* ----------------------------------- */
1037 static int new_rfork(const char *path, struct adouble *ad, int adflags)
1042 const struct entry *eid;
1046 ad->ad_magic = AD_MAGIC;
1047 ad->ad_version = ad->ad_flags;
1048 if (!ad->ad_version)
1049 ad->ad_version = AD_VERSION;
1051 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
1052 memset(ad->ad_data, 0, sizeof(ad->ad_data));
1054 #if AD_VERSION == AD_VERSION2
1055 if (ad->ad_version == AD_VERSION2)
1062 ad->ad_eid[eid->id].ade_off = eid->offset;
1063 ad->ad_eid[eid->id].ade_len = eid->len;
1067 /* put something sane in the directory finderinfo */
1068 if ((adflags & ADFLAGS_DIR)) {
1069 /* set default view */
1070 ashort = htons(FINDERINFO_CLOSEDVIEW);
1071 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
1072 &ashort, sizeof(ashort));
1074 /* set default creator/type fields */
1075 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"TEXT", 4);
1076 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"UNIX", 4);
1079 /* make things invisible */
1080 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
1081 ashort = htons(ATTRBIT_INVISIBLE);
1082 ad_setattr(ad, ashort);
1083 ashort = htons(FINDERINFO_INVISIBLE);
1084 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
1085 &ashort, sizeof(ashort));
1089 if (gettimeofday(&tv, NULL) < 0) {
1094 if (stat(path, &st) < 0) {
1098 /* put something sane in the date fields */
1099 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
1100 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
1101 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
1102 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
1106 /* to do this with mmap, we need the hfs fs to understand how to mmap
1108 int ad_refresh(struct adouble *ad)
1111 if (ad->ad_hf.adf_fd < -1)
1114 return ad_header_read(ad, NULL);