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 != -2 && 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);
742 static ssize_t read_file(struct ofork *ofork, int eid,
743 off_t offset, u_char nlmask,
744 u_char nlchar, char *rbuf,
751 cc = ad_read(ofork->of_ad, eid, offset, rbuf, *rbuflen);
753 LOG(log_error, logtype_afpd, "afp_read(%s): ad_read: %s", of_name(ofork), strerror(errno) );
755 return( AFPERR_PARAM );
757 if ( (size_t)cc < *rbuflen ) {
765 for ( p = rbuf, q = p + cc; p < q; ) {
766 if (( *p++ & nlmask ) == nlchar ) {
778 return( AFPERR_EOF );
783 /* -----------------------------
784 * with ddp, afp_read can return fewer bytes than in reqcount
785 * so return EOF only if read actually past end of file not
786 * if offset +reqcount > size of file
788 * getfork size ==> 10430
789 * read fork offset 0 size 10752 ???? ==> 4264 bytes (without EOF)
790 * read fork offset 4264 size 6128 ==> 4264 (without EOF)
791 * read fork offset 9248 size 1508 ==> 1182 (EOF)
792 * 10752 is a bug in Mac 7.5.x finder
794 * with dsi, should we check that reqcount < server quantum?
796 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
799 off_t offset, saveoff, reqcount, savereqcount;
803 u_char nlmask, nlchar;
806 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
807 ibuf += sizeof( u_short );
809 if (NULL == ( ofork = of_find( ofrefnum )) ) {
810 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
815 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
819 offset = get_off_t(&ibuf, is64);
820 reqcount = get_off_t(&ibuf, is64);
822 LOG(log_debug, logtype_afpd,
823 "afp_read(off: %" PRIu64 ", size: %" PRIu64 ", fork: %s)", offset, reqcount,
824 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
833 /* if we wanted to be picky, we could add in the following
834 * bit: if (afp_version == 11 && !(nlmask == 0xFF || !nlmask))
836 if (reqcount < 0 || offset < 0) {
841 if ( ofork->of_flags & AFPFORK_DATA) {
843 } else if (ofork->of_flags & AFPFORK_RSRC) {
845 } else { /* fork wasn't opened. this should never really happen. */
850 /* zero request count */
856 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd)",
857 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount);
859 savereqcount = reqcount;
861 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, saveoff, savereqcount,ofork->of_refnum) < 0) {
866 *rbuflen = MIN(reqcount, *rbuflen);
867 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): reading %jd bytes from file",
868 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
870 err = read_file(ofork, eid, offset, nlmask, nlchar, rbuf, rbuflen);
873 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): got %jd bytes from file",
874 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
876 /* dsi can stream requests. we can only do this if we're not checking
877 * for an end-of-line character. oh well. */
878 if ((*rbuflen < reqcount) && !nlmask) {
882 /* reqcount isn't always truthful. we need to deal with that. */
883 size = ad_size(ofork->of_ad, eid);
885 /* subtract off the offset */
887 if (reqcount > size) {
894 /* dsi_readinit() returns size of next read buffer. by this point,
895 * we know that we're sending some data. if we fail, something
896 * horrible happened. */
897 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
900 /* due to the nature of afp packets, we have to exit if we get
901 an error. we can't do this with translation on. */
903 if (!(obj->options.flags & OPTION_NOSENDFILE)) {
904 int fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
905 if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) {
911 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
922 /* fill up our buffer. */
923 while (*rbuflen > 0) {
924 cc = read_file(ofork, eid, offset, nlmask, nlchar, rbuf,rbuflen);
929 /* dsi_read() also returns buffer size of next allocation */
930 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
939 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
941 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
942 obj->exit(EXITERR_CLNT);
946 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
954 /* ---------------------- */
955 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
957 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
960 /* ---------------------- */
961 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
963 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
966 /* ---------------------- */
967 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
975 memcpy(&vid, ibuf, sizeof(vid));
976 if (NULL == ( vol = getvolbyvid( vid )) ) {
977 return( AFPERR_PARAM );
984 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
991 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
993 if (NULL == ( ofork = of_find( ofrefnum )) ) {
994 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
995 return( AFPERR_PARAM );
998 LOG(log_debug, logtype_afpd, "afp_flushfork(fork: %s)",
999 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1001 if ( flushfork( ofork ) < 0 ) {
1002 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
1010 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
1011 fsync(2) on OSX is implemented differently than on other platforms.
1012 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
1014 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1016 struct ofork *ofork;
1022 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
1023 ibuf += sizeof( ofrefnum );
1025 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1026 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
1027 return( AFPERR_PARAM );
1030 LOG(log_debug, logtype_afpd, "afp_syncfork(fork: %s)",
1031 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1033 if ( flushfork( ofork ) < 0 ) {
1034 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1041 /* this is very similar to closefork */
1042 int flushfork(struct ofork *ofork)
1046 int err = 0, doflush = 0;
1048 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1049 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1050 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1051 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1055 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1056 (ofork->of_flags & AFPFORK_RSRC)) {
1058 /* read in the rfork length */
1059 ad_refresh(NULL, ofork->of_ad);
1061 /* set the date if we're dirty */
1062 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1063 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1064 ofork->of_flags &= ~AFPFORK_DIRTY;
1068 /* flush the header */
1069 if (doflush && ad_flush(ofork->of_ad) < 0)
1072 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1076 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1077 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1083 int afp_closefork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1085 struct ofork *ofork;
1090 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1092 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1093 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1094 return( AFPERR_PARAM );
1097 LOG(log_debug, logtype_afpd, "afp_closefork(fork: %s)",
1098 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1100 if (of_closefork(obj, ofork) < 0 ) {
1101 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1102 return( AFPERR_PARAM );
1109 static ssize_t write_file(struct ofork *ofork, int eid,
1110 off_t offset, char *rbuf,
1116 LOG(log_debug, logtype_afpd, "write_file(off: %ju, size: %zu)",
1117 (uintmax_t)offset, rbuflen);
1119 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1120 rbuf, rbuflen)) < 0 ) {
1125 return( AFPERR_DFULL );
1127 return AFPERR_ACCESS;
1129 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1130 return( AFPERR_PARAM );
1138 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1139 * the client may have sent us a bunch of data that's not reflected
1140 * in reqcount et al. */
1141 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1143 struct ofork *ofork;
1144 off_t offset, saveoff, reqcount, oldsize, newsize;
1145 int endflag, eid, err = AFP_OK;
1149 /* figure out parameters */
1151 endflag = ENDBIT(*ibuf);
1153 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1154 ibuf += sizeof( ofrefnum );
1156 offset = get_off_t(&ibuf, is64);
1157 reqcount = get_off_t(&ibuf, is64);
1159 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1160 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1165 LOG(log_debug, logtype_afpd, "afp_write(off: %" PRIu64 ", size: %" PRIu64 ", fork: %s)",
1166 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1168 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1169 err = AFPERR_ACCESS;
1174 writtenfork = ofork;
1177 if ( ofork->of_flags & AFPFORK_DATA) {
1179 } else if (ofork->of_flags & AFPFORK_RSRC) {
1182 err = AFPERR_ACCESS; /* should never happen */
1186 oldsize = ad_size(ofork->of_ad, eid);
1190 /* handle bogus parameters */
1191 if (reqcount < 0 || offset < 0) {
1196 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
1198 /* offset can overflow on 64-bit capable filesystems.
1199 * report disk full if that's going to happen. */
1200 if (sum_neg(is64, offset, reqcount)) {
1205 if (!reqcount) { /* handle request counts of 0 */
1207 *rbuflen = set_off_t (offset, rbuf, is64);
1212 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff,
1213 reqcount, ofork->of_refnum) < 0) {
1218 DSI *dsi = obj->dsi;
1219 /* find out what we have already and write it out. */
1220 cc = dsi_writeinit(dsi, rbuf, *rbuflen);
1222 if (!cc || (cc = write_file(ofork, eid, offset, rbuf, cc)) < 0) {
1223 dsi_writeflush(dsi);
1225 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1231 #if 0 /*def HAVE_SENDFILE_WRITE*/
1232 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
1233 offset, dsi->datasize)) < 0) {
1241 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1242 goto afp_write_loop;
1244 dsi_writeflush(dsi);
1246 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1247 reqcount, ofork->of_refnum);
1252 goto afp_write_done;
1253 #endif /* 0, was HAVE_SENDFILE_WRITE */
1255 /* loop until everything gets written. currently
1256 * dsi_write handles the end case by itself. */
1257 while ((cc = dsi_write(dsi, rbuf, *rbuflen))) {
1258 if ((cc = write_file(ofork, eid, offset, rbuf, cc)) < 0) {
1259 dsi_writeflush(dsi);
1261 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1262 reqcount, ofork->of_refnum);
1268 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1269 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1270 ofork->of_flags |= AFPFORK_DIRTY;
1272 /* we have modified any fork, remember until close_fork */
1273 ofork->of_flags |= AFPFORK_MODIFIED;
1275 /* update write count */
1276 ofork->of_vol->v_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1278 *rbuflen = set_off_t (offset, rbuf, is64);
1282 dsi_writeinit(obj->dsi, rbuf, *rbuflen);
1283 dsi_writeflush(obj->dsi);
1285 if (err != AFP_OK) {
1291 /* ---------------------------- */
1292 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1294 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1297 /* ----------------------------
1298 * FIXME need to deal with SIGXFSZ signal
1300 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1302 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1305 /* ---------------------------- */
1306 int afp_getforkparams(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1308 struct ofork *ofork;
1310 uint16_t ofrefnum, bitmap;
1313 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1314 ibuf += sizeof( ofrefnum );
1315 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1316 bitmap = ntohs( bitmap );
1317 ibuf += sizeof( bitmap );
1320 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1321 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1322 return( AFPERR_PARAM );
1325 if (AD_META_OPEN(ofork->of_ad)) {
1326 if ( ad_refresh(NULL, ofork->of_ad ) < 0 ) {
1327 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1328 return( AFPERR_PARAM );
1332 if (AFP_OK != (ret = getforkparams(obj, ofork, bitmap, rbuf + sizeof( u_short ), &buflen ))) {
1336 *rbuflen = buflen + sizeof( u_short );
1337 bitmap = htons( bitmap );
1338 memcpy(rbuf, &bitmap, sizeof( bitmap ));