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;
633 LOG(log_error, logtype_afpd, "afp_setforkparams: DISK FULL");
641 /* for this to work correctly, we need to check for locks before each
642 * read and write. that's most easily handled by always doing an
643 * appropriate check before each ad_read/ad_write. other things
644 * that can change files like truncate are handled internally to those
647 #define ENDBIT(a) ((a) & 0x80)
648 #define UNLOCKBIT(a) ((a) & 0x01)
651 /* ---------------------- */
652 static int byte_lock(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
655 off_t offset, length;
663 /* figure out parameters */
665 flags = *ibuf; /* first bit = endflag, lastbit = lockflag */
667 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
668 ibuf += sizeof(ofrefnum);
670 if (NULL == ( ofork = of_find( ofrefnum )) ) {
671 LOG(log_error, logtype_afpd, "byte_lock: of_find(%d) could not locate fork", ofrefnum );
672 return( AFPERR_PARAM );
675 if ( ofork->of_flags & AFPFORK_DATA) {
677 } else if (ofork->of_flags & AFPFORK_RSRC) {
682 offset = get_off_t(&ibuf, is64);
683 length = get_off_t(&ibuf, is64);
686 length = BYTELOCK_MAX;
687 else if (!length || is_neg(is64, length)) {
689 } else if ((length >= AD_FILELOCK_BASE) && -1 == (ad_reso_fileno(ofork->of_ad))) { /* HF ?*/
694 offset += ad_size(ofork->of_ad, eid);
695 /* FIXME what do we do if file size > 2 GB and
696 it's not byte_lock_ext?
699 if (offset < 0) /* error if we have a negative offset */
702 /* if the file is a read-only file, we use read locks instead of
703 * write locks. that way, we can prevent anyone from initiating
705 lockop = UNLOCKBIT(flags) ? ADLOCK_CLR : ADLOCK_WR;
706 if (ad_lock(ofork->of_ad, eid, lockop, offset, length,
707 ofork->of_refnum) < 0) {
711 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_LOCK;
717 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_RANGEOVR;
725 *rbuflen = set_off_t (offset, rbuf, is64);
729 /* --------------------------- */
730 int afp_bytelock(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
732 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 0);
735 /* --------------------------- */
736 int afp_bytelock_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
738 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 1);
744 * Read *rbuflen bytes from fork at offset
746 * @param ofork (r) fork handle
747 * @param eid (r) data fork or ressource fork entry id
748 * @param offset (r) offset
749 * @param rbuf (r) data buffer
750 * @param rbuflen (rw) in: number of bytes to read, out: bytes read
752 * @return AFP status code
754 static int read_file(const struct ofork *ofork, int eid, off_t offset, char *rbuf, size_t *rbuflen)
760 cc = ad_read(ofork->of_ad, eid, offset, rbuf, *rbuflen);
762 LOG(log_error, logtype_afpd, "afp_read(%s): ad_read: %s", of_name(ofork), strerror(errno) );
764 return( AFPERR_PARAM );
768 if ((size_t)cc < *rbuflen)
773 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
777 off_t offset, saveoff, reqcount, savereqcount, size;
782 /* we break the AFP spec here by not supporting nlmask and nlchar anymore */
785 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
786 ibuf += sizeof( u_short );
788 if (NULL == ( ofork = of_find( ofrefnum )) ) {
789 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
794 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
799 if ( ofork->of_flags & AFPFORK_DATA) {
801 } else if (ofork->of_flags & AFPFORK_RSRC) {
803 } else { /* fork wasn't opened. this should never really happen. */
808 offset = get_off_t(&ibuf, is64);
809 reqcount = get_off_t(&ibuf, is64);
811 /* zero request count */
817 /* reqcount isn't always truthful. we need to deal with that. */
818 size = ad_size(ofork->of_ad, eid);
820 LOG(log_debug, logtype_afpd,
821 "afp_read(off: %" PRIu64 ", len: %" PRIu64 ", fork: %s, size: %" PRIu64 ")",
822 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r", size);
829 /* subtract off the offset */
830 if (reqcount + offset > size) {
831 reqcount = size - offset;
835 savereqcount = reqcount;
838 LOG(log_debug, logtype_afpd,
839 "afp_read(off: %" PRIu64 ", len: %" PRIu64 ", fork: %s)",
840 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
842 if (reqcount < 0 || offset < 0) {
847 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd)",
848 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount);
850 if (obj->options.flags & OPTION_AFP_READ_LOCK) {
851 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, offset, reqcount, ofork->of_refnum) < 0) {
858 if (!(eid == ADEID_DFORK && ad_data_fileno(ofork->of_ad) == AD_SYMLINK) &&
859 !(obj->options.flags & OPTION_NOSENDFILE)) {
860 int fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
861 if (dsi_stream_read_file(dsi, fd, offset, reqcount, err) < 0) {
862 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s",
863 of_name(ofork), strerror(errno));
870 *rbuflen = MIN(reqcount, *rbuflen);
872 err = read_file(ofork, eid, offset, rbuf, rbuflen);
876 LOG(log_debug, logtype_afpd,
877 "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): got %jd bytes from file",
878 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
883 * dsi_readinit() returns size of next read buffer. by this point,
884 * we know that we're sending some data. if we fail, something
887 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
891 while (*rbuflen > 0) {
892 cc = read_file(ofork, eid, offset, rbuf, rbuflen);
897 /* dsi_read() also returns buffer size of next allocation */
898 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
907 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
909 if (obj->options.flags & OPTION_AFP_READ_LOCK)
910 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount, ofork->of_refnum);
911 obj->exit(EXITERR_CLNT);
914 if (obj->options.flags & OPTION_AFP_READ_LOCK)
915 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount, ofork->of_refnum);
923 /* ---------------------- */
924 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
926 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
929 /* ---------------------- */
930 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
932 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
935 /* ---------------------- */
936 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
944 memcpy(&vid, ibuf, sizeof(vid));
945 if (NULL == ( vol = getvolbyvid( vid )) ) {
946 return( AFPERR_PARAM );
953 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
960 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
962 if (NULL == ( ofork = of_find( ofrefnum )) ) {
963 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
964 return( AFPERR_PARAM );
967 LOG(log_debug, logtype_afpd, "afp_flushfork(fork: %s)",
968 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
970 if ( flushfork( ofork ) < 0 ) {
971 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
979 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
980 fsync(2) on OSX is implemented differently than on other platforms.
981 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
983 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
991 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
992 ibuf += sizeof( ofrefnum );
994 if (NULL == ( ofork = of_find( ofrefnum )) ) {
995 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
996 return( AFPERR_PARAM );
999 LOG(log_debug, logtype_afpd, "afp_syncfork(fork: %s)",
1000 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1002 if ( flushfork( ofork ) < 0 ) {
1003 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1010 /* this is very similar to closefork */
1011 int flushfork(struct ofork *ofork)
1015 int err = 0, doflush = 0;
1017 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1018 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1019 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1020 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1024 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1025 (ofork->of_flags & AFPFORK_RSRC)) {
1027 /* read in the rfork length */
1028 ad_refresh(NULL, ofork->of_ad);
1030 /* set the date if we're dirty */
1031 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1032 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1033 ofork->of_flags &= ~AFPFORK_DIRTY;
1037 /* flush the header */
1038 if (doflush && ad_flush(ofork->of_ad) < 0)
1041 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1045 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1046 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1052 int afp_closefork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1054 struct ofork *ofork;
1059 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1061 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1062 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1063 return( AFPERR_PARAM );
1066 LOG(log_debug, logtype_afpd, "afp_closefork(fork: %s)",
1067 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1069 if (of_closefork(obj, ofork) < 0 ) {
1070 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1071 return( AFPERR_PARAM );
1078 static ssize_t write_file(struct ofork *ofork, int eid,
1079 off_t offset, char *rbuf,
1085 LOG(log_debug, logtype_afpd, "write_file(off: %ju, size: %zu)",
1086 (uintmax_t)offset, rbuflen);
1088 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1089 rbuf, rbuflen)) < 0 ) {
1094 LOG(log_error, logtype_afpd, "write_file: DISK FULL");
1095 return( AFPERR_DFULL );
1097 return AFPERR_ACCESS;
1099 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1100 return( AFPERR_PARAM );
1109 * FPWrite. NOTE: on an error, we always use afp_write_err as
1110 * the client may have sent us a bunch of data that's not reflected
1111 * in reqcount et al.
1113 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1115 struct ofork *ofork;
1116 off_t offset, saveoff, reqcount, oldsize, newsize;
1117 int endflag, eid, err = AFP_OK;
1120 DSI *dsi = obj->dsi;
1121 char *rcvbuf = dsi->buffer;
1122 size_t rcvbuflen = dsi->dsireadbuf * dsi->server_quantum;
1124 /* figure out parameters */
1126 endflag = ENDBIT(*ibuf);
1128 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1129 ibuf += sizeof( ofrefnum );
1131 offset = get_off_t(&ibuf, is64);
1132 reqcount = get_off_t(&ibuf, is64);
1134 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1135 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1140 LOG(log_debug, logtype_afpd, "afp_write(off: %" PRIu64 ", size: %" PRIu64 ", fork: %s)",
1141 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1143 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1144 err = AFPERR_ACCESS;
1149 writtenfork = ofork;
1152 if ( ofork->of_flags & AFPFORK_DATA) {
1154 } else if (ofork->of_flags & AFPFORK_RSRC) {
1157 err = AFPERR_ACCESS; /* should never happen */
1161 oldsize = ad_size(ofork->of_ad, eid);
1165 /* handle bogus parameters */
1166 if (reqcount < 0 || offset < 0) {
1171 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
1173 /* offset can overflow on 64-bit capable filesystems.
1174 * report disk full if that's going to happen. */
1175 if (sum_neg(is64, offset, reqcount)) {
1176 LOG(log_error, logtype_afpd, "write_fork: DISK FULL");
1181 if (!reqcount) { /* handle request counts of 0 */
1183 *rbuflen = set_off_t (offset, rbuf, is64);
1188 if (obj->options.flags & OPTION_AFP_READ_LOCK) {
1189 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff, reqcount, ofork->of_refnum) < 0) {
1195 /* find out what we have already */
1196 cc = dsi_writeinit(dsi, rcvbuf, rcvbuflen);
1198 if (!cc || (cc = write_file(ofork, eid, offset, rcvbuf, cc)) < 0) {
1199 dsi_writeflush(dsi);
1201 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1202 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1208 #if 0 /*def HAVE_SENDFILE_WRITE*/
1209 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket, offset, dsi->datasize)) < 0) {
1217 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1218 goto afp_write_loop;
1220 dsi_writeflush(dsi);
1222 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1223 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1228 goto afp_write_done;
1229 #endif /* 0, was HAVE_SENDFILE_WRITE */
1231 /* loop until everything gets written. currently
1232 * dsi_write handles the end case by itself. */
1233 while ((cc = dsi_write(dsi, rcvbuf, rcvbuflen))) {
1235 if ((cc = write_file(ofork, eid, offset, rcvbuf, cc)) < 0) {
1236 dsi_writeflush(dsi);
1238 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1239 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1243 LOG(log_debug, logtype_afpd, "afp_write: wrote: %jd, offset: %jd",
1244 (intmax_t)cc, (intmax_t)offset);
1249 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1250 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1251 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1252 ofork->of_flags |= AFPFORK_DIRTY;
1254 /* we have modified any fork, remember until close_fork */
1255 ofork->of_flags |= AFPFORK_MODIFIED;
1257 /* update write count */
1258 ofork->of_vol->v_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1260 *rbuflen = set_off_t (offset, rbuf, is64);
1264 dsi_writeinit(obj->dsi, rbuf, *rbuflen);
1265 dsi_writeflush(obj->dsi);
1267 if (err != AFP_OK) {
1273 /* ---------------------------- */
1274 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1276 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1279 /* ----------------------------
1280 * FIXME need to deal with SIGXFSZ signal
1282 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1284 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1287 /* ---------------------------- */
1288 int afp_getforkparams(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1290 struct ofork *ofork;
1292 uint16_t ofrefnum, bitmap;
1295 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1296 ibuf += sizeof( ofrefnum );
1297 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1298 bitmap = ntohs( bitmap );
1299 ibuf += sizeof( bitmap );
1302 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1303 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1304 return( AFPERR_PARAM );
1307 if (AD_META_OPEN(ofork->of_ad)) {
1308 if ( ad_refresh(NULL, ofork->of_ad ) < 0 ) {
1309 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1310 return( AFPERR_PARAM );
1314 if (AFP_OK != (ret = getforkparams(obj, ofork, bitmap, rbuf + sizeof( u_short ), &buflen ))) {
1318 *rbuflen = buflen + sizeof( u_short );
1319 bitmap = htons( bitmap );
1320 memcpy(rbuf, &bitmap, sizeof( bitmap ));