2 * Copyright (c) 1990,1993 Regents of The University of Michigan.
3 * Copyright (c) 2010 Frank Lahm
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
15 #include <sys/param.h>
16 #include <sys/socket.h>
19 #include <atalk/dsi.h>
20 #include <atalk/afp.h>
21 #include <atalk/adouble.h>
22 #include <atalk/logger.h>
23 #include <atalk/util.h>
24 #include <atalk/cnid.h>
25 #include <atalk/bstradd.h>
26 #include <atalk/globals.h>
27 #include <atalk/netatalk_conf.h>
32 #include "directory.h"
37 struct ofork *writtenfork;
40 static int getforkparams(const AFPObj *obj, struct ofork *ofork, uint16_t bitmap, char *buf, size_t *buflen)
50 /* can only get the length of the opened fork */
51 if ( ( (bitmap & ((1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN)))
52 && (ofork->of_flags & AFPFORK_RSRC))
54 ( (bitmap & ((1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN)))
55 && (ofork->of_flags & AFPFORK_DATA))) {
56 return( AFPERR_BITMAP );
59 if (! AD_META_OPEN(ofork->of_ad)) {
66 dir = dirlookup(vol, ofork->of_did);
68 if (NULL == (path.m_name = utompath(vol, of_name(ofork), dir->d_did, utf8_encoding(obj)))) {
69 return( AFPERR_MISC );
71 path.u_name = of_name(ofork);
74 if ( bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) |
75 (1<<FILPBIT_FNUM) | (1 << FILPBIT_CDATE) |
76 (1 << FILPBIT_MDATE) | (1 << FILPBIT_BDATE))) {
77 if ( ad_data_fileno( ofork->of_ad ) <= 0 ) {
78 /* 0 is for symlink */
79 if (movecwd(vol, dir) < 0)
80 return( AFPERR_NOOBJ );
81 if ( lstat( path.u_name, st ) < 0 )
82 return( AFPERR_NOOBJ );
84 if ( fstat( ad_data_fileno( ofork->of_ad ), st ) < 0 ) {
85 return( AFPERR_BITMAP );
89 return getmetadata(obj, vol, bitmap, &path, dir, buf, buflen, adp );
92 static off_t get_off_t(char **ibuf, int is64)
98 memcpy(&temp, *ibuf, sizeof( temp ));
99 ret = ntohl(temp); /* ntohl is unsigned */
100 *ibuf += sizeof(temp);
103 memcpy(&temp, *ibuf, sizeof( temp ));
104 *ibuf += sizeof(temp);
105 ret = ntohl(temp)| (ret << 32);
108 ret = (int)ret; /* sign extend */
113 static int set_off_t(off_t offset, char *rbuf, int is64)
120 temp = htonl(offset >> 32);
121 memcpy(rbuf, &temp, sizeof( temp ));
122 rbuf += sizeof(temp);
123 ret = sizeof( temp );
124 offset &= 0xffffffff;
126 temp = htonl(offset);
127 memcpy(rbuf, &temp, sizeof( temp ));
128 ret += sizeof( temp );
133 static int is_neg(int is64, off_t val)
135 if (val < 0 || (sizeof(off_t) == 8 && !is64 && (val & 0x80000000U)))
140 static int sum_neg(int is64, off_t offset, off_t reqcount)
142 if (is_neg(is64, offset +reqcount) )
147 static int fork_setmode(const AFPObj *obj, struct adouble *adp, int eid, int access, int ofrefnum)
158 if (obj->options.flags & OPTION_SHARE_RESERV) {
159 shmd.f_access = (access & OPENACC_RD ? F_RDACC : 0) | (access & OPENACC_WR ? F_WRACC : 0);
160 if (shmd.f_access == 0)
161 /* we must give an access mode, otherwise fcntl will complain */
162 shmd.f_access = F_RDACC;
163 shmd.f_deny = (access & OPENACC_DRD ? F_RDDNY : F_NODNY) | (access & OPENACC_DWR) ? F_WRDNY : 0;
164 shmd.f_id = ofrefnum;
166 int fd = (eid == ADEID_DFORK) ? ad_data_fileno(adp) : ad_reso_fileno(adp);
168 if (fd != -1 && fd != AD_SYMLINK && fcntl(fd, F_SHARE, &shmd) != 0) {
169 LOG(log_debug, logtype_afpd, "fork_setmode: fcntl: %s", strerror(errno));
176 if (! (access & (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD))) {
177 return ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_NONE, 1, ofrefnum);
180 if ((access & (OPENACC_RD | OPENACC_DRD))) {
181 if ((readset = ad_testlock(adp, eid, AD_FILELOCK_OPEN_RD)) <0)
183 if ((denyreadset = ad_testlock(adp, eid, AD_FILELOCK_DENY_RD)) <0)
186 if ((access & OPENACC_RD) && denyreadset) {
190 if ((access & OPENACC_DRD) && readset) {
194 /* boolean logic is not enough, because getforkmode is not always telling the
197 if ((access & OPENACC_RD)) {
198 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_RD, 1, ofrefnum);
202 if ((access & OPENACC_DRD)) {
203 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_DENY_RD, 1, ofrefnum);
208 /* ------------same for writing -------------- */
209 if ((access & (OPENACC_WR | OPENACC_DWR))) {
210 if ((writeset = ad_testlock(adp, eid, AD_FILELOCK_OPEN_WR)) <0)
212 if ((denywriteset = ad_testlock(adp, eid, AD_FILELOCK_DENY_WR)) <0)
215 if ((access & OPENACC_WR) && denywriteset) {
219 if ((access & OPENACC_DWR) && writeset) {
223 if ((access & OPENACC_WR)) {
224 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_WR, 1, ofrefnum);
228 if ((access & OPENACC_DWR)) {
229 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_DENY_WR, 1, ofrefnum);
238 /* ----------------------- */
239 int afp_openfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
243 struct ofork *ofork, *opened;
244 struct adouble *adsame = NULL;
246 int ret, adflags, eid;
248 uint16_t vid, bitmap, access, ofrefnum;
249 char fork, *path, *upath;
257 memcpy(&vid, ibuf, sizeof( vid ));
261 if (NULL == ( vol = getvolbyvid( vid ))) {
262 return( AFPERR_PARAM );
265 memcpy(&did, ibuf, sizeof( did ));
266 ibuf += sizeof( int );
268 if (NULL == ( dir = dirlookup( vol, did ))) {
272 memcpy(&bitmap, ibuf, sizeof( bitmap ));
273 bitmap = ntohs( bitmap );
274 ibuf += sizeof( bitmap );
275 memcpy(&access, ibuf, sizeof( access ));
276 access = ntohs( access );
277 ibuf += sizeof( access );
279 if ((vol->v_flags & AFPVOL_RO) && (access & OPENACC_WR)) {
283 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
284 return get_afp_errno(AFPERR_PARAM);
287 if (*s_path->m_name == '\0') {
289 return AFPERR_BADTYPE;
292 /* stat() data fork st is set because it's not a dir */
293 switch ( s_path->st_errno ) {
299 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
301 LOG(log_error, logtype_afpd, "afp_openfork(%s): %s", s_path->m_name, strerror(errno));
304 /* FIXME should we check it first ? */
305 upath = s_path->u_name;
306 if (!vol_unix_priv(vol)) {
307 if (check_access(obj, vol, upath, access ) < 0) {
308 return AFPERR_ACCESS;
311 if (file_access(obj, vol, s_path, access ) < 0) {
312 return AFPERR_ACCESS;
317 /* XXX: this probably isn't the best way to do this. the already
318 open bits should really be set if the fork is opened by any
319 program, not just this one. however, that's problematic to do
320 if we can't write lock files somewhere. opened is also passed to
321 ad_open so that we can keep file locks together.
322 FIXME: add the fork we are opening?
324 if ((opened = of_findname(s_path))) {
325 adsame = opened->of_ad;
328 if ( fork == OPENFORK_DATA ) {
330 adflags = ADFLAGS_DF | ADFLAGS_HF | ADFLAGS_NOHF;
333 adflags = ADFLAGS_RF | ADFLAGS_HF | ADFLAGS_NOHF;
334 if (!(access & OPENACC_WR))
335 adflags |= ADFLAGS_NORF;
338 path = s_path->m_name;
339 if (( ofork = of_alloc(vol, curdir, path, &ofrefnum, eid,
340 adsame, st)) == NULL ) {
341 return( AFPERR_NFILE );
344 LOG(log_debug, logtype_afpd, "afp_openfork(\"%s\", %s, %s)",
345 fullpathname(s_path->u_name),
346 (fork == OPENFORK_DATA) ? "data" : "reso",
347 !(access & OPENACC_WR) ? "O_RDONLY" : "O_RDWR");
350 if (access & OPENACC_WR) {
351 /* try opening in read-write mode */
352 if (ad_open(ofork->of_ad, upath,
353 adflags | ADFLAGS_RDWR | ADFLAGS_SETSHRMD) < 0) {
360 if (fork == OPENFORK_DATA) {
361 /* try to open only the data fork */
362 if (ad_open(ofork->of_ad, upath,
363 ADFLAGS_DF | ADFLAGS_RDWR | ADFLAGS_SETSHRMD) < 0) {
366 adflags = ADFLAGS_DF;
368 /* here's the deal. we only try to create the resource
369 * fork if the user wants to open it for write acess. */
370 if (ad_open(ofork->of_ad, upath,
371 adflags | ADFLAGS_RDWR | ADFLAGS_SETSHRMD | ADFLAGS_CREATE, 0666) < 0)
373 ofork->of_flags |= AFPFORK_META;
381 ret = AFPERR_BADTYPE;
384 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
390 /* the ressource fork is open too */
391 ofork->of_flags |= AFPFORK_META;
394 /* try opening in read-only mode */
396 if (ad_open(ofork->of_ad, upath, adflags | ADFLAGS_RDONLY | ADFLAGS_SETSHRMD) < 0) {
404 /* see if client asked for a read only data fork */
405 if (fork == OPENFORK_DATA) {
406 if (ad_open(ofork->of_ad, upath, ADFLAGS_DF | ADFLAGS_RDONLY | ADFLAGS_SETSHRMD) < 0) {
409 adflags = ADFLAGS_DF;
411 /* else we don't set AFPFORK_META because there's no ressource fork file
412 * We need to check AFPFORK_META in afp_closefork(). eg fork open read-only
413 * then create in open read-write.
414 * FIXME , it doesn't play well with byte locking example:
415 * ressource fork open read only
416 * locking set on it (no effect, there's no file!)
417 * ressource fork open read write now
425 ret = AFPERR_BADTYPE;
428 LOG(log_error, logtype_afpd, "afp_openfork(\"%s\"): %s",
429 fullpathname(s_path->m_name), strerror(errno) );
433 ofork->of_flags |= AFPFORK_META;
437 if ((adflags & ADFLAGS_RF) && (ad_get_RF_flags( ofork->of_ad) & O_CREAT)) {
438 if (ad_setname(ofork->of_ad, path)) {
439 ad_flush( ofork->of_ad );
443 if ((ret = getforkparams(obj, ofork, bitmap, rbuf + 2 * sizeof(int16_t), &buflen)) != AFP_OK) {
444 ad_close( ofork->of_ad, adflags | ADFLAGS_SETSHRMD);
448 *rbuflen = buflen + 2 * sizeof( uint16_t );
449 bitmap = htons( bitmap );
450 memcpy(rbuf, &bitmap, sizeof( uint16_t ));
451 rbuf += sizeof( uint16_t );
453 /* check WriteInhibit bit if we have a ressource fork
454 * the test is done here, after some Mac trafic capture
456 if (ad_meta_fileno(ofork->of_ad) != -1) { /* META */
457 ad_getattr(ofork->of_ad, &bshort);
458 if ((bshort & htons(ATTRBIT_NOWRITE)) && (access & OPENACC_WR)) {
459 ad_close( ofork->of_ad, adflags | ADFLAGS_SETSHRMD);
462 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
463 return(AFPERR_OLOCK);
468 * synchronization locks:
471 /* don't try to lock non-existent rforks. */
472 if ((eid == ADEID_DFORK)
473 || (ad_reso_fileno(ofork->of_ad) != -1)
474 || (ofork->of_ad->ad_vers == AD_VERSION_EA)) {
475 ret = fork_setmode(obj, ofork->of_ad, eid, access, ofrefnum);
476 /* can we access the fork? */
478 ofork->of_flags |= AFPFORK_ERROR;
480 ad_close( ofork->of_ad, adflags | ADFLAGS_SETSHRMD);
483 case EAGAIN: /* return data anyway */
487 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
488 return( AFPERR_DENYCONF );
492 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_lock: %s", s_path->m_name, strerror(ret) );
493 return( AFPERR_PARAM );
496 if ((access & OPENACC_WR))
497 ofork->of_flags |= AFPFORK_ACCWR;
499 /* the file may be open read only without ressource fork */
500 if ((access & OPENACC_RD))
501 ofork->of_flags |= AFPFORK_ACCRD;
503 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
509 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
513 int afp_setforkparams(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf _U_, size_t *rbuflen)
517 uint16_t ofrefnum, bitmap;
525 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
526 ibuf += sizeof( ofrefnum );
528 memcpy(&bitmap, ibuf, sizeof(bitmap));
529 bitmap = ntohs(bitmap);
530 ibuf += sizeof( bitmap );
533 if (NULL == ( ofork = of_find( ofrefnum )) ) {
534 LOG(log_error, logtype_afpd, "afp_setforkparams: of_find(%d) could not locate fork", ofrefnum );
535 return( AFPERR_PARAM );
538 if (ofork->of_vol->v_flags & AFPVOL_RO)
541 if ((ofork->of_flags & AFPFORK_ACCWR) == 0)
542 return AFPERR_ACCESS;
544 if ( ofork->of_flags & AFPFORK_DATA) {
546 } else if (ofork->of_flags & AFPFORK_RSRC) {
551 if ( ( (bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) ))
552 && eid == ADEID_RFORK
554 ( (bitmap & ( (1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN) ))
555 && eid == ADEID_DFORK)) {
556 return AFPERR_BITMAP;
560 if ((bitmap & ( (1<<FILPBIT_EXTDFLEN) | (1<<FILPBIT_EXTRFLEN) ))) {
561 if (obj->afp_version >= 30) {
565 return AFPERR_BITMAP;
568 if (ibuflen < 2+ sizeof(ofrefnum) + sizeof(bitmap) + is64 +4)
569 return AFPERR_PARAM ;
571 size = get_off_t(&ibuf, is64);
574 return AFPERR_PARAM; /* Some MacOS don't return an error they just don't change the size! */
577 if (bitmap == (1<<FILPBIT_DFLEN) || bitmap == (1<<FILPBIT_EXTDFLEN)) {
578 st_size = ad_size(ofork->of_ad, eid);
580 if (st_size > size &&
581 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0)
582 goto afp_setfork_err;
584 err = ad_dtruncate( ofork->of_ad, size );
586 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
588 goto afp_setfork_err;
589 } else if (bitmap == (1<<FILPBIT_RFLEN) || bitmap == (1<<FILPBIT_EXTRFLEN)) {
590 ad_refresh(NULL, ofork->of_ad );
592 st_size = ad_size(ofork->of_ad, eid);
594 if (st_size > size &&
595 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0) {
596 goto afp_setfork_err;
599 err = ad_rtruncate(ofork->of_ad, size);
601 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
603 goto afp_setfork_err;
605 if (ad_flush( ofork->of_ad ) < 0) {
606 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): ad_flush: %s", of_name(ofork), strerror(errno) );
610 return AFPERR_BITMAP;
613 if ( flushfork( ofork ) < 0 ) {
614 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): flushfork: %s", of_name(ofork), strerror(errno) );
629 return AFPERR_ACCESS;
640 /* for this to work correctly, we need to check for locks before each
641 * read and write. that's most easily handled by always doing an
642 * appropriate check before each ad_read/ad_write. other things
643 * that can change files like truncate are handled internally to those
646 #define ENDBIT(a) ((a) & 0x80)
647 #define UNLOCKBIT(a) ((a) & 0x01)
650 /* ---------------------- */
651 static int byte_lock(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
654 off_t offset, length;
662 /* figure out parameters */
664 flags = *ibuf; /* first bit = endflag, lastbit = lockflag */
666 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
667 ibuf += sizeof(ofrefnum);
669 if (NULL == ( ofork = of_find( ofrefnum )) ) {
670 LOG(log_error, logtype_afpd, "byte_lock: of_find(%d) could not locate fork", ofrefnum );
671 return( AFPERR_PARAM );
674 if ( ofork->of_flags & AFPFORK_DATA) {
676 } else if (ofork->of_flags & AFPFORK_RSRC) {
681 offset = get_off_t(&ibuf, is64);
682 length = get_off_t(&ibuf, is64);
685 length = BYTELOCK_MAX;
686 else if (!length || is_neg(is64, length)) {
688 } else if ((length >= AD_FILELOCK_BASE) && -1 == (ad_reso_fileno(ofork->of_ad))) { /* HF ?*/
693 offset += ad_size(ofork->of_ad, eid);
694 /* FIXME what do we do if file size > 2 GB and
695 it's not byte_lock_ext?
698 if (offset < 0) /* error if we have a negative offset */
701 /* if the file is a read-only file, we use read locks instead of
702 * write locks. that way, we can prevent anyone from initiating
704 lockop = UNLOCKBIT(flags) ? ADLOCK_CLR : ADLOCK_WR;
705 if (ad_lock(ofork->of_ad, eid, lockop, offset, length,
706 ofork->of_refnum) < 0) {
710 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_LOCK;
716 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_RANGEOVR;
724 *rbuflen = set_off_t (offset, rbuf, is64);
728 /* --------------------------- */
729 int afp_bytelock(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
731 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 0);
734 /* --------------------------- */
735 int afp_bytelock_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
737 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 1);
743 * Read *rbuflen bytes from fork at offset
745 * @param ofork (r) fork handle
746 * @param eid (r) data fork or ressource fork entry id
747 * @param offset (r) offset
748 * @param rbuf (r) data buffer
749 * @param rbuflen (rw) in: number of bytes to read, out: bytes read
751 * @return AFP status code
753 static int read_file(const struct ofork *ofork, int eid, off_t offset, char *rbuf, size_t *rbuflen)
759 cc = ad_read(ofork->of_ad, eid, offset, rbuf, *rbuflen);
761 LOG(log_error, logtype_afpd, "afp_read(%s): ad_read: %s", of_name(ofork), strerror(errno) );
763 return( AFPERR_PARAM );
767 if ((size_t)cc < *rbuflen)
772 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
776 off_t offset, saveoff, reqcount, savereqcount, size;
781 /* we break the AFP spec here by not supporting nlmask and nlchar anymore */
784 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
785 ibuf += sizeof( u_short );
787 if (NULL == ( ofork = of_find( ofrefnum )) ) {
788 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
793 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
798 if ( ofork->of_flags & AFPFORK_DATA) {
800 } else if (ofork->of_flags & AFPFORK_RSRC) {
802 } else { /* fork wasn't opened. this should never really happen. */
807 offset = get_off_t(&ibuf, is64);
808 reqcount = get_off_t(&ibuf, is64);
810 /* zero request count */
816 /* reqcount isn't always truthful. we need to deal with that. */
817 size = ad_size(ofork->of_ad, eid);
819 LOG(log_debug, logtype_afpd,
820 "afp_read(off: %" PRIu64 ", len: %" PRIu64 ", fork: %s, size: %" PRIu64 ")",
821 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r", size);
828 /* subtract off the offset */
829 if (reqcount + offset > size) {
830 reqcount = size - offset;
834 savereqcount = reqcount;
837 LOG(log_debug, logtype_afpd,
838 "afp_read(off: %" PRIu64 ", len: %" PRIu64 ", fork: %s)",
839 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
841 if (reqcount < 0 || offset < 0) {
846 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd)",
847 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount);
849 if (obj->options.flags & OPTION_AFP_READ_LOCK) {
850 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, offset, reqcount, ofork->of_refnum) < 0) {
857 if (!(obj->options.flags & OPTION_NOSENDFILE)) {
858 int fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
859 if (dsi_stream_read_file(dsi, fd, offset, reqcount, err) < 0) {
860 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s",
861 of_name(ofork), strerror(errno));
869 *rbuflen = MIN(reqcount, *rbuflen);
871 err = read_file(ofork, eid, offset, rbuf, rbuflen);
875 LOG(log_debug, logtype_afpd,
876 "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): got %jd bytes from file",
877 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
882 * dsi_readinit() returns size of next read buffer. by this point,
883 * we know that we're sending some data. if we fail, something
886 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
890 while (*rbuflen > 0) {
891 cc = read_file(ofork, eid, offset, rbuf, rbuflen);
896 /* dsi_read() also returns buffer size of next allocation */
897 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
906 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
908 if (obj->options.flags & OPTION_AFP_READ_LOCK)
909 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount, ofork->of_refnum);
910 obj->exit(EXITERR_CLNT);
913 if (obj->options.flags & OPTION_AFP_READ_LOCK)
914 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount, ofork->of_refnum);
922 /* ---------------------- */
923 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
925 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
928 /* ---------------------- */
929 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
931 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
934 /* ---------------------- */
935 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
943 memcpy(&vid, ibuf, sizeof(vid));
944 if (NULL == ( vol = getvolbyvid( vid )) ) {
945 return( AFPERR_PARAM );
952 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
959 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
961 if (NULL == ( ofork = of_find( ofrefnum )) ) {
962 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
963 return( AFPERR_PARAM );
966 LOG(log_debug, logtype_afpd, "afp_flushfork(fork: %s)",
967 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
969 if ( flushfork( ofork ) < 0 ) {
970 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
978 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
979 fsync(2) on OSX is implemented differently than on other platforms.
980 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
982 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
990 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
991 ibuf += sizeof( ofrefnum );
993 if (NULL == ( ofork = of_find( ofrefnum )) ) {
994 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
995 return( AFPERR_PARAM );
998 LOG(log_debug, logtype_afpd, "afp_syncfork(fork: %s)",
999 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1001 if ( flushfork( ofork ) < 0 ) {
1002 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1009 /* this is very similar to closefork */
1010 int flushfork(struct ofork *ofork)
1014 int err = 0, doflush = 0;
1016 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1017 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1018 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1019 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1023 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1024 (ofork->of_flags & AFPFORK_RSRC)) {
1026 /* read in the rfork length */
1027 ad_refresh(NULL, ofork->of_ad);
1029 /* set the date if we're dirty */
1030 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1031 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1032 ofork->of_flags &= ~AFPFORK_DIRTY;
1036 /* flush the header */
1037 if (doflush && ad_flush(ofork->of_ad) < 0)
1040 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1044 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1045 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1051 int afp_closefork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1053 struct ofork *ofork;
1058 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1060 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1061 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1062 return( AFPERR_PARAM );
1065 LOG(log_debug, logtype_afpd, "afp_closefork(fork: %s)",
1066 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1068 if (of_closefork(obj, ofork) < 0 ) {
1069 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1070 return( AFPERR_PARAM );
1077 static ssize_t write_file(struct ofork *ofork, int eid,
1078 off_t offset, char *rbuf,
1084 LOG(log_debug, logtype_afpd, "write_file(off: %ju, size: %zu)",
1085 (uintmax_t)offset, rbuflen);
1087 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1088 rbuf, rbuflen)) < 0 ) {
1093 return( AFPERR_DFULL );
1095 return AFPERR_ACCESS;
1097 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1098 return( AFPERR_PARAM );
1106 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1107 * the client may have sent us a bunch of data that's not reflected
1108 * in reqcount et al. */
1109 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1111 struct ofork *ofork;
1112 off_t offset, saveoff, reqcount, oldsize, newsize;
1113 int endflag, eid, err = AFP_OK;
1117 /* figure out parameters */
1119 endflag = ENDBIT(*ibuf);
1121 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1122 ibuf += sizeof( ofrefnum );
1124 offset = get_off_t(&ibuf, is64);
1125 reqcount = get_off_t(&ibuf, is64);
1127 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1128 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1133 LOG(log_debug, logtype_afpd, "afp_write(off: %" PRIu64 ", size: %" PRIu64 ", fork: %s)",
1134 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1136 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1137 err = AFPERR_ACCESS;
1142 writtenfork = ofork;
1145 if ( ofork->of_flags & AFPFORK_DATA) {
1147 } else if (ofork->of_flags & AFPFORK_RSRC) {
1150 err = AFPERR_ACCESS; /* should never happen */
1154 oldsize = ad_size(ofork->of_ad, eid);
1158 /* handle bogus parameters */
1159 if (reqcount < 0 || offset < 0) {
1164 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
1166 /* offset can overflow on 64-bit capable filesystems.
1167 * report disk full if that's going to happen. */
1168 if (sum_neg(is64, offset, reqcount)) {
1173 if (!reqcount) { /* handle request counts of 0 */
1175 *rbuflen = set_off_t (offset, rbuf, is64);
1180 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff,
1181 reqcount, ofork->of_refnum) < 0) {
1186 DSI *dsi = obj->dsi;
1187 /* find out what we have already and write it out. */
1188 cc = dsi_writeinit(dsi, rbuf, *rbuflen);
1190 if (!cc || (cc = write_file(ofork, eid, offset, rbuf, cc)) < 0) {
1191 dsi_writeflush(dsi);
1193 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1199 #if 0 /*def HAVE_SENDFILE_WRITE*/
1200 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
1201 offset, dsi->datasize)) < 0) {
1209 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1210 goto afp_write_loop;
1212 dsi_writeflush(dsi);
1214 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1215 reqcount, ofork->of_refnum);
1220 goto afp_write_done;
1221 #endif /* 0, was HAVE_SENDFILE_WRITE */
1223 /* loop until everything gets written. currently
1224 * dsi_write handles the end case by itself. */
1225 while ((cc = dsi_write(dsi, rbuf, *rbuflen))) {
1226 if ((cc = write_file(ofork, eid, offset, rbuf, cc)) < 0) {
1227 dsi_writeflush(dsi);
1229 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1230 reqcount, ofork->of_refnum);
1236 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1237 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1238 ofork->of_flags |= AFPFORK_DIRTY;
1240 /* we have modified any fork, remember until close_fork */
1241 ofork->of_flags |= AFPFORK_MODIFIED;
1243 /* update write count */
1244 ofork->of_vol->v_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1246 *rbuflen = set_off_t (offset, rbuf, is64);
1250 dsi_writeinit(obj->dsi, rbuf, *rbuflen);
1251 dsi_writeflush(obj->dsi);
1253 if (err != AFP_OK) {
1259 /* ---------------------------- */
1260 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1262 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1265 /* ----------------------------
1266 * FIXME need to deal with SIGXFSZ signal
1268 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1270 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1273 /* ---------------------------- */
1274 int afp_getforkparams(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1276 struct ofork *ofork;
1278 uint16_t ofrefnum, bitmap;
1281 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1282 ibuf += sizeof( ofrefnum );
1283 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1284 bitmap = ntohs( bitmap );
1285 ibuf += sizeof( bitmap );
1288 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1289 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1290 return( AFPERR_PARAM );
1293 if (AD_META_OPEN(ofork->of_ad)) {
1294 if ( ad_refresh(NULL, ofork->of_ad ) < 0 ) {
1295 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1296 return( AFPERR_PARAM );
1300 if (AFP_OK != (ret = getforkparams(obj, ofork, bitmap, rbuf + sizeof( u_short ), &buflen ))) {
1304 *rbuflen = buflen + sizeof( u_short );
1305 bitmap = htons( bitmap );
1306 memcpy(rbuf, &bitmap, sizeof( bitmap ));