2 * $Id: ad_open.c,v 1.30.6.8 2004-02-20 19:57:14 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 */
36 #include <atalk/adouble.h>
37 #include <sys/param.h>
38 #include <atalk/logger.h>
40 #include <atalk/util.h>
43 #include "ad_private.h"
46 #define MAX(a, b) ((a) < (b) ? (b) : (a))
50 * AppleDouble entry default offsets.
51 * The layout looks like this:
53 * this is the v1 layout:
55 * | NAME | COMMENT | FILEI | FINDERI | RFORK |
57 * we need to change it to look like this:
60 * field length (in bytes)
63 * FILEDATESI 16 replaces FILEI
67 * SHORTNAME 12 8.3 new
70 * so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
71 * and add in the new fields.
73 * NOTE: the HFS module will need similar modifications to interact with
77 #define ADEDOFF_MAGIC (0)
78 #define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
79 #define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
80 #define ADEDOFF_NENTRIES (ADEDOFF_FILLER + ADEDLEN_FILLER)
82 /* initial lengths of some of the fields */
83 #define ADEDLEN_INIT 0
85 /* make sure we don't redefine ADEDOFF_FILEI */
88 #endif /* ADEDOFF_FILEI */
90 #define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
91 #define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
92 #define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
93 #define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
94 #define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
96 /* i stick things in a slightly different order than their eid order in
97 * case i ever want to separate RootInfo behaviour from the rest of the
99 #define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
100 #define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
101 #define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
102 #define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
103 #define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
104 #define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
105 #define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
106 #define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
107 #define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
108 #define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
109 #define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
110 #define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
112 #define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
114 /* we keep local copies of a bunch of stuff so that we can initialize things
117 /* Bits in the finderinfo data.
118 * see etc/afpd/{directory.c,file.c} for the finderinfo structure
120 #define FINDERINFO_CUSTOMICON 0x4
121 #define FINDERINFO_CLOSEDVIEW 0x100
123 /* offsets in finderinfo */
124 #define FINDERINFO_FRTYPEOFF 0
125 #define FINDERINFO_FRCREATOFF 4
126 #define FINDERINFO_FRFLAGOFF 8
127 #define FINDERINFO_FRVIEWOFF 14
129 /* invisible bit for dot files */
130 #define ATTRBIT_INVISIBLE (1 << 0)
131 #define FINDERINFO_INVISIBLE (1 << 14)
133 /* this is to prevent changing timezones from causing problems with
134 localtime volumes. the screw-up is 30 years. we use a delta of 5
136 #define TIMEWARP_DELTA 157680000
140 u_int32_t id, offset, len;
143 static const struct entry entry_order1[ADEID_NUM_V1 +1] = {
144 {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT}, /* 3 */
145 {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT}, /* 4 */
146 {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI}, /* 7 */
147 {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI}, /* 9 */
148 {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT}, /* 2 */
152 #if AD_VERSION == AD_VERSION1
153 #define DISK_EID(ad, a) (a)
155 #else /* AD_VERSION == AD_VERSION2 */
157 static u_int32_t get_eid(struct adouble *ad, u_int32_t eid)
161 if (ad->ad_version == AD_VERSION1)
164 return ADEID_PRIVDEV;
166 return ADEID_PRIVINO;
168 return ADEID_PRIVSYN;
175 #define DISK_EID(ad, a) get_eid(ad, a)
177 static const struct entry entry_order2[ADEID_NUM_V2 +1] = {
178 {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
179 {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
180 {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
181 {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
182 {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
183 {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
184 {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
185 {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
186 {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
187 {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
188 {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
189 {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
190 {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
194 #endif /* AD_VERSION == AD_VERSION2 */
196 #if AD_VERSION == AD_VERSION2
198 static int ad_update(struct adouble *ad, const char *path)
201 u_int16_t nentries = 0;
202 off_t off, shiftdata=0;
203 const struct entry *eid;
204 static off_t entry_len[ADEID_MAX];
205 static char databuf[ADEID_MAX][256], *buf;
208 /* check to see if we should convert this header. */
209 if (!path || (ad->ad_version != AD_VERSION2))
212 if (ad->ad_eid[ADEID_RFORK].ade_off)
213 shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
215 memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof( nentries ));
216 nentries = ntohs( nentries );
218 if ( shiftdata == 0 && nentries == ADEID_NUM_V2)
221 memset(entry_len, 0, sizeof(entry_len));
222 memset(databuf, 0, sizeof(databuf));
224 /* bail if we can't get a lock */
225 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
228 if ((fd = open(path, O_RDWR)) < 0)
231 if (fstat(fd, &st) ||
232 sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
235 if (st.st_size > 0x7fffffff) {
236 LOG(log_debug, logtype_default, "ad_update: file '%s' too big for update.", path);
239 /* last place for failure. */
240 if ((void *) (buf = (char *)
241 mmap(NULL, st.st_size + shiftdata,
242 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
247 off = ad->ad_eid[ADEID_RFORK].ade_off;
249 /* move the RFORK. this assumes that the RFORK is at the end */
251 memmove(buf + ADEDOFF_RFORK_V2, buf + off, ad->ad_eid[ADEID_RFORK].ade_len);
254 munmap(buf, st.st_size + shiftdata);
257 /* now, fix up our copy of the header */
258 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
260 /* save the header entries */
263 if( ad->ad_eid[eid->id].ade_off != 0) {
264 if ( eid->id > 2 && ad->ad_eid[eid->id].ade_len < 256)
265 memcpy( databuf[eid->id], ad->ad_data +ad->ad_eid[eid->id].ade_off, ad->ad_eid[eid->id].ade_len);
266 entry_len[eid->id] = ad->ad_eid[eid->id].ade_len;
271 memset(ad->ad_data + AD_HEADER_LEN, 0, AD_DATASZ - AD_HEADER_LEN);
273 /* copy the saved entries to the new header */
276 if ( eid->id > 2 && entry_len[eid->id] > 0) {
277 memcpy(ad->ad_data+eid->offset, databuf[eid->id], entry_len[eid->id]);
279 ad->ad_eid[eid->id].ade_off = eid->offset;
280 ad->ad_eid[eid->id].ade_len = entry_len[eid->id];
284 /* rebuild the header and cleanup */
285 ad_flush(ad, ADFLAGS_HF );
286 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
288 LOG(log_debug, logtype_default, "updated AD2 header %s", path);
293 sys_ftruncate(fd, st.st_size);
297 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
303 /* FIXME work only if < 2GB */
304 static int ad_v1tov2(struct adouble *ad, const char *path)
310 /* use resource fork offset from file */
313 /* check to see if we should convert this header. */
314 if (!path || (ad->ad_version != AD_VERSION1))
317 /* we want version1 anyway */
318 if (ad->ad_flags == AD_VERSION1)
323 /* we don't really know what we want */
324 ad->ad_flags = ad->ad_version;
328 /* convert from v1 to v2. what does this mean?
329 * 1) change FILEI into FILEDATESI
330 * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
331 * 3) move FILEI attributes into AFPFILEI
332 * 4) initialize ACCESS field of FILEDATESI.
333 * 5) move the resource fork
336 /* bail if we can't get a lock */
337 if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
340 if ((fd = open(path, O_RDWR)) < 0)
343 if (ad->ad_eid[ADEID_RFORK].ade_off) {
344 shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
347 shiftdata = ADEDOFF_RFORK_V2 -ADEDOFF_RFORK_V1; /* 136 */
350 if (fstat(fd, &st) ||
351 sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
354 if (st.st_size > 0x7fffffff) {
355 LOG(log_debug, logtype_default, "ad_v1tov2: file too big.");
359 /* last place for failure. */
360 if ((void *) (buf = (char *)
361 mmap(NULL, st.st_size + shiftdata,
362 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
367 off = ad->ad_eid[ADEID_RFORK].ade_off;
369 /* move the RFORK. this assumes that the RFORK is at the end */
371 memmove(buf + ADEDOFF_RFORK_V2, buf + off, ad->ad_eid[ADEID_RFORK].ade_len);
374 munmap(buf, st.st_size + shiftdata);
377 /* now, fix up our copy of the header */
378 memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
380 /* replace FILEI with FILEDATESI */
381 ad_getattr(ad, &attr);
382 ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
383 ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
384 ad->ad_eid[ADEID_FILEI].ade_off = 0;
385 ad->ad_eid[ADEID_FILEI].ade_len = 0;
387 /* add in the new entries */
388 ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
389 ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
390 ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
391 ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
392 ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
393 ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
394 ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
395 ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
397 ad->ad_eid[ADEID_PRIVDEV].ade_off = ADEDOFF_PRIVDEV;
398 ad->ad_eid[ADEID_PRIVDEV].ade_len = ADEDLEN_INIT;
399 ad->ad_eid[ADEID_PRIVINO].ade_off = ADEDOFF_PRIVINO;
400 ad->ad_eid[ADEID_PRIVINO].ade_len = ADEDLEN_INIT;
401 ad->ad_eid[ADEID_PRIVSYN].ade_off = ADEDOFF_PRIVSYN;
402 ad->ad_eid[ADEID_PRIVSYN].ade_len = ADEDLEN_INIT;
403 ad->ad_eid[ADEID_PRIVID].ade_off = ADEDOFF_PRIVID;
404 ad->ad_eid[ADEID_PRIVID].ade_len = ADEDLEN_INIT;
406 /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
407 ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
408 ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
409 ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
410 ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
413 ad->ad_version = AD_VERSION2;
415 /* move our data buffer to make space for the new entries. */
416 memmove(ad->ad_data + ADEDOFF_NAME_V2, ad->ad_data + ADEDOFF_NAME_V1,
417 ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
419 /* now, fill in the space with appropriate stuff. we're
420 operating as a v2 file now. */
421 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
422 memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
423 memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
424 ad_setattr(ad, attr);
425 memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
426 memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
428 /* rebuild the header and cleanup */
429 ad_flush(ad, ADFLAGS_HF );
430 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
435 sys_ftruncate(fd, st.st_size);
439 ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
443 #endif /* AD_VERSION == AD_VERSION2 */
446 mode_t ad_hf_mode (mode_t mode)
448 /* fnctl lock need write access */
449 if ((mode & S_IRUSR))
451 if ((mode & S_IRGRP))
453 if ((mode & S_IROTH))
455 /* if write mode set add read mode */
456 if ((mode & S_IWUSR))
458 if ((mode & S_IWGRP))
460 if ((mode & S_IWOTH))
468 /* -------------------------------------
471 static void parse_entries(struct adouble *ad, char *buf,
474 u_int32_t eid, len, off;
477 /* now, read in the entry bits */
478 for (; nentries > 0; nentries-- ) {
479 memcpy(&eid, buf, sizeof( eid ));
480 eid = DISK_EID(ad, ntohl( eid ));
481 buf += sizeof( eid );
482 memcpy(&off, buf, sizeof( off ));
484 buf += sizeof( off );
485 memcpy(&len, buf, sizeof( len ));
487 buf += sizeof( len );
489 if ( 0 < eid && eid < ADEID_MAX ) {
490 ad->ad_eid[ eid ].ade_off = off;
491 ad->ad_eid[ eid ].ade_len = len;
492 } else if (!warning) {
494 LOG(log_debug, logtype_default, "ad_refresh: nentries %hd eid %d\n",
501 /* this reads enough of the header so that we can figure out all of
502 * the entry lengths and offsets. once that's done, we just read/mmap
503 * the rest of the header in.
505 * NOTE: we're assuming that the resource fork is kept at the end of
506 * the file. also, mmapping won't work for the hfs fs until it
507 * understands how to mmap header files. */
508 static int ad_header_read(struct adouble *ad, struct stat *hst)
510 char *buf = ad->ad_data;
514 static int warning = 0;
517 /* read the header */
518 if ((header_len = adf_pread( &ad->ad_hf, buf, sizeof(ad->ad_data), 0)) < 0) {
521 if (header_len < AD_HEADER_LEN) {
526 memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
527 memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
529 /* tag broken v1 headers. just assume they're all right.
530 * we detect two cases: null magic/version
531 * byte swapped magic/version
532 * XXX: in the future, you'll need the v1compat flag.
533 * (ad->ad_flags & ADFLAGS_V1COMPAT) */
534 if (!ad->ad_magic && !ad->ad_version) {
536 LOG(log_debug, logtype_default, "notice: fixing up null v1 magic/version.");
539 ad->ad_magic = AD_MAGIC;
540 ad->ad_version = AD_VERSION1;
542 } else if (ad->ad_magic == AD_MAGIC && ad->ad_version == AD_VERSION1) {
544 LOG(log_debug, logtype_default, "notice: fixing up byte-swapped v1 magic/version.");
549 ad->ad_magic = ntohl( ad->ad_magic );
550 ad->ad_version = ntohl( ad->ad_version );
553 if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
554 #if AD_VERSION == AD_VERSION2
555 && (ad->ad_version != AD_VERSION2)
556 #endif /* AD_VERSION == AD_VERSION2 */
559 LOG(log_debug, logtype_default, "ad_open: can't parse AppleDouble header.");
563 memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
564 memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
565 nentries = ntohs( nentries );
567 /* read in all the entry headers. if we have more than the
568 * maximum, just hope that the rfork is specified early on. */
569 len = nentries*AD_ENTRY_LEN;
571 if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
572 len = sizeof(ad->ad_data) - AD_HEADER_LEN;
574 buf += AD_HEADER_LEN;
575 if (len > header_len - AD_HEADER_LEN) {
577 LOG(log_debug, logtype_default, "ad_header_read: can't read entry info.");
581 /* figure out all of the entry offsets and lengths. if we aren't
582 * able to read a resource fork entry, bail. */
583 nentries = len / AD_ENTRY_LEN;
584 parse_entries(ad, buf, nentries);
585 if (!ad_getentryoff(ad, ADEID_RFORK)
586 || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
588 LOG(log_debug, logtype_default, "ad_header_read: problem with rfork entry offset.");
592 if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
594 LOG(log_debug, logtype_default, "ad_header_read: can't read in entries.");
600 if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
601 return 1; /* fail silently */
604 ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
606 /* fix up broken dates */
607 if (ad->ad_version == AD_VERSION1) {
610 /* check to see if the ad date is wrong. just see if we have
611 * a modification date in the future. */
612 if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
613 (aint > TIMEWARP_DELTA + hst->st_mtime)) {
614 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
615 ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
616 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
617 ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
618 ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
627 * Put the .AppleDouble where it needs to be:
631 * \ b/.AppleDouble/.Parent
633 * FIXME: should do something for pathname > MAXPATHLEN
636 ad_path( path, adflags )
640 static char pathbuf[ MAXPATHLEN + 1];
641 char c, *slash, buf[MAXPATHLEN + 1];
644 l = strlcpy(buf, path, MAXPATHLEN +1);
645 if ( adflags & ADFLAGS_DIR ) {
646 strcpy( pathbuf, buf);
647 if ( *buf != '\0' && l < MAXPATHLEN) {
653 if (NULL != ( slash = strrchr( buf, '/' )) ) {
656 strcpy( pathbuf, buf);
663 strlcat( pathbuf, ".AppleDouble/", MAXPATHLEN +1);
664 strlcat( pathbuf, slash, MAXPATHLEN +1);
670 * Support inherited protection modes for AppleDouble files. The supplied
671 * mode is ANDed with the parent directory's mask value in lieu of "umask",
672 * and that value is returned.
675 #define DEFMASK 07700 /* be conservative */
681 static char modebuf[ MAXPATHLEN + 1];
685 if ( (len = strlen( path )) >= MAXPATHLEN ) {
686 errno = ENAMETOOLONG;
687 return NULL; /* can't do it */
691 * For a path with directories in it, remove the final component
692 * (path or subdirectory name) to get the name we want to stat.
693 * For a path which is just a filename, use "." instead.
695 strcpy( modebuf, path );
696 slash = strrchr( modebuf, '/' );
697 /* is last char a '/' */
698 if (slash && slash[1] == 0) {
699 while (modebuf < slash && slash[-1] == '/') {
702 if (modebuf < slash) {
703 *slash = '\0'; /* remove pathname component */
704 slash = strrchr( modebuf, '/' );
708 *slash = '\0'; /* remove pathname component */
710 modebuf[0] = '.'; /* use current directory */
716 /* ---------------- */
717 static uid_t default_uid = -1;
719 int ad_setfuid(const uid_t id)
725 /* ---------------- */
726 uid_t ad_getfuid(void)
732 return inode of path parent directory
734 int ad_stat(const char *path, struct stat *stbuf)
743 return stat( p, stbuf );
747 if we are root change path user/ group
748 It can be a native function for BSD cf. FAQ.Q10
749 path: pathname to chown
750 stbuf: parent directory inode
752 use fstat and fchown or lchown with linux?
754 #define EMULATE_SUIDDIR
756 static int ad_chown(const char *path, struct stat *stbuf)
759 #ifdef EMULATE_SUIDDIR
762 if (default_uid != -1) {
763 /* we are root (admin) */
764 id = (default_uid)?default_uid:stbuf->st_uid;
765 ret = chown( path, id, stbuf->st_gid );
772 return access right and inode of path parent directory
774 static int ad_mode_st(const char *path, int *mode, struct stat *stbuf)
779 if (ad_stat(path, stbuf) != 0) {
783 *mode &= stbuf->st_mode;
788 return access right of path parent directory
791 ad_mode( path, mode )
796 ad_mode_st(path, &mode, &stbuf);
801 * Use mkdir() with mode bits taken from ad_mode().
804 ad_mkdir( path, mode )
813 LOG(log_info, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
816 st_invalid = ad_mode_st(path, &mode, &stbuf);
817 ret = mkdir( path, mode );
818 if (ret || st_invalid)
820 ad_chown(path, &stbuf);
825 /* ----------------- */
826 static int ad_error(struct adouble *ad, int adflags)
828 if ((adflags & ADFLAGS_NOHF)) {
829 /* FIXME double check : set header offset ?*/
832 if ((adflags & ADFLAGS_DF)) {
833 ad_close( ad, ADFLAGS_DF );
838 static int new_rfork(const char *path, struct adouble *ad, int adflags);
843 #define AD_SET(a) a = 0
846 void ad_init(struct adouble *ad, int flags)
848 memset( ad, 0, sizeof( struct adouble ) );
849 ad->ad_flags = flags;
852 /* -------------------
853 * It's not possible to open the header file O_RDONLY -- the read
854 * will fail and return an error. this refcounts things now.
856 int ad_open( path, adflags, oflags, mode, ad )
858 int adflags, oflags, mode;
867 if (ad->ad_inited != AD_INITED) {
870 adf_lock_init(&ad->ad_df);
871 adf_lock_init(&ad->ad_hf);
872 ad->ad_inited = AD_INITED;
876 if ((adflags & ADFLAGS_DF)) {
877 if (ad_dfileno(ad) == -1) {
878 hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
880 st_invalid = ad_mode_st(path, &admode, &st);
881 ad->ad_df.adf_fd =open( path, hoflags, admode );
882 if (ad->ad_df.adf_fd < 0 ) {
883 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
885 ad->ad_df.adf_fd =open( path, hoflags, admode );
888 if ( ad->ad_df.adf_fd < 0)
891 AD_SET(ad->ad_df.adf_off);
892 ad->ad_df.adf_flags = hoflags;
893 if ((oflags & O_CREAT) && !st_invalid) {
894 /* just created, set owner if admin (root) */
899 /* the file is already open... but */
900 if ((oflags & ( O_RDWR | O_WRONLY)) && /* we want write access */
901 !(ad->ad_df.adf_flags & ( O_RDWR | O_WRONLY))) /* and it was denied the first time */
907 * for now ad_open is never called with O_TRUNC or O_EXCL if the file is
908 * already open. Should we check for it? ie
910 * O_TRUNC --> truncate the fork.
911 * idem for ressource fork.
914 open_df = ADFLAGS_DF;
915 ad->ad_df.adf_refcount++;
918 if (!(adflags & ADFLAGS_HF))
921 if (ad_hfileno(ad) != -1) { /* the file is already open */
922 if ((oflags & ( O_RDWR | O_WRONLY)) &&
923 !(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
925 /* don't call with ADFLAGS_HF because we didn't open ressource fork */
926 ad_close( ad, open_df );
932 ad->ad_hf.adf_refcount++;
936 ad_p = ad_path( path, adflags );
938 hoflags = oflags & ~O_CREAT;
939 hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
940 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
941 if (ad->ad_hf.adf_fd < 0 ) {
942 if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
943 hoflags = oflags & ~O_CREAT;
944 ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
948 if ( ad->ad_hf.adf_fd < 0 ) {
949 if (errno == ENOENT && (oflags & O_CREAT) ) {
951 * We're expecting to create a new adouble header file,
953 * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
956 st_invalid = ad_mode_st(ad_p, &admode, &st);
957 admode = ad_hf_mode(admode);
959 ad->ad_hf.adf_fd = open( ad_p, oflags,admode );
960 if ( ad->ad_hf.adf_fd < 0 ) {
962 * Probably .AppleDouble doesn't exist, try to
965 if (errno == ENOENT && (adflags & ADFLAGS_NOADOUBLE) == 0) {
966 if (NULL == ( slash = strrchr( ad_p, '/' )) ) {
967 return ad_error(ad, adflags);
971 if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
972 return ad_error(ad, adflags);
976 st_invalid = ad_mode_st(ad_p, &admode, &st);
977 admode = ad_hf_mode(admode);
978 ad->ad_hf.adf_fd = open( ad_p, oflags, admode);
979 if ( ad->ad_hf.adf_fd < 0 ) {
980 return ad_error(ad, adflags);
983 return ad_error(ad, adflags);
986 ad->ad_hf.adf_flags = oflags;
987 /* just created, set owner if admin owner (root) */
993 return ad_error(ad, adflags);
995 } else if (fstat(ad->ad_hf.adf_fd, &st) == 0 && st.st_size == 0) {
996 /* for 0 length files, treat them as new. */
997 ad->ad_hf.adf_flags = hoflags| O_TRUNC;
999 ad->ad_hf.adf_flags = hoflags;
1001 AD_SET(ad->ad_hf.adf_off);
1003 memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
1004 ad->ad_hf.adf_refcount++;
1005 if ((ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT ))) {
1007 * This is a new adouble header file. Initialize the structure,
1008 * instead of reading it.
1010 if (new_rfork(path, ad, adflags) < 0) {
1011 /* the file is already deleted, perm, whatever, so return an error*/
1012 ad_close(ad, adflags);
1016 /* Read the adouble header in and parse it.*/
1017 if ((ad_header_read( ad , &st) < 0)
1018 #if AD_VERSION == AD_VERSION2
1019 || (ad_v1tov2(ad, ad_p) < 0) || (ad_update(ad, ad_p) < 0)
1020 #endif /* AD_VERSION == AD_VERSION2 */
1022 ad_close( ad, adflags );
1029 /* ----------------------------------- */
1030 static int new_rfork(const char *path, struct adouble *ad, int adflags)
1035 const struct entry *eid;
1039 ad->ad_magic = AD_MAGIC;
1040 ad->ad_version = ad->ad_flags;
1041 if (!ad->ad_version)
1042 ad->ad_version = AD_VERSION;
1044 memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
1045 memset(ad->ad_data, 0, sizeof(ad->ad_data));
1047 #if AD_VERSION == AD_VERSION2
1048 if (ad->ad_version == AD_VERSION2)
1055 ad->ad_eid[eid->id].ade_off = eid->offset;
1056 ad->ad_eid[eid->id].ade_len = eid->len;
1060 /* put something sane in the directory finderinfo */
1061 if ((adflags & ADFLAGS_DIR)) {
1062 /* set default view */
1063 ashort = htons(FINDERINFO_CLOSEDVIEW);
1064 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
1065 &ashort, sizeof(ashort));
1067 /* set default creator/type fields */
1068 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"TEXT", 4);
1069 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"UNIX", 4);
1072 /* make things invisible */
1073 if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
1074 ashort = htons(ATTRBIT_INVISIBLE);
1075 ad_setattr(ad, ashort);
1076 ashort = htons(FINDERINFO_INVISIBLE);
1077 memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
1078 &ashort, sizeof(ashort));
1082 if (gettimeofday(&tv, NULL) < 0) {
1087 if (stat(path, &st) < 0) {
1091 /* put something sane in the date fields */
1092 ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
1093 ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
1094 ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
1095 ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
1099 /* to do this with mmap, we need the hfs fs to understand how to mmap
1101 int ad_refresh(struct adouble *ad)
1104 if (ad->ad_hf.adf_fd < -1)
1107 return ad_header_read(ad, NULL);