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>
30 #include "directory.h"
35 struct ofork *writtenfork;
38 static int getforkparams(struct ofork *ofork, uint16_t bitmap, char *buf, size_t *buflen)
48 /* can only get the length of the opened fork */
49 if ( ( (bitmap & ((1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN)))
50 && (ofork->of_flags & AFPFORK_RSRC))
52 ( (bitmap & ((1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN)))
53 && (ofork->of_flags & AFPFORK_DATA))) {
54 return( AFPERR_BITMAP );
57 if ( ad_reso_fileno( ofork->of_ad ) == -1 ) { /* META ? */
64 dir = dirlookup(vol, ofork->of_did);
66 if (NULL == (path.u_name = mtoupath(vol, of_name(ofork), dir->d_did, utf8_encoding()))) {
67 return( AFPERR_MISC );
69 path.m_name = of_name(ofork);
72 if ( bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) |
73 (1<<FILPBIT_FNUM) | (1 << FILPBIT_CDATE) |
74 (1 << FILPBIT_MDATE) | (1 << FILPBIT_BDATE))) {
75 if ( ad_data_fileno( ofork->of_ad ) <= 0 ) {
76 /* 0 is for symlink */
77 if (movecwd(vol, dir) < 0)
78 return( AFPERR_NOOBJ );
79 if ( lstat( path.u_name, st ) < 0 )
80 return( AFPERR_NOOBJ );
82 if ( fstat( ad_data_fileno( ofork->of_ad ), st ) < 0 ) {
83 return( AFPERR_BITMAP );
87 return getmetadata(vol, bitmap, &path, dir, buf, buflen, adp );
90 static off_t get_off_t(char **ibuf, int is64)
96 memcpy(&temp, *ibuf, sizeof( temp ));
97 ret = ntohl(temp); /* ntohl is unsigned */
98 *ibuf += sizeof(temp);
101 memcpy(&temp, *ibuf, sizeof( temp ));
102 *ibuf += sizeof(temp);
103 ret = ntohl(temp)| (ret << 32);
106 ret = (int)ret; /* sign extend */
111 static int set_off_t(off_t offset, char *rbuf, int is64)
118 temp = htonl(offset >> 32);
119 memcpy(rbuf, &temp, sizeof( temp ));
120 rbuf += sizeof(temp);
121 ret = sizeof( temp );
122 offset &= 0xffffffff;
124 temp = htonl(offset);
125 memcpy(rbuf, &temp, sizeof( temp ));
126 ret += sizeof( temp );
131 static int is_neg(int is64, off_t val)
133 if (val < 0 || (sizeof(off_t) == 8 && !is64 && (val & 0x80000000U)))
138 static int sum_neg(int is64, off_t offset, off_t reqcount)
140 if (is_neg(is64, offset +reqcount) )
145 static int fork_setmode(struct adouble *adp, int eid, int access, int ofrefnum)
153 if (! (access & (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD))) {
154 return ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_NONE, 1, ofrefnum);
157 if ((access & (OPENACC_RD | OPENACC_DRD))) {
158 if ((readset = ad_testlock(adp, eid, AD_FILELOCK_OPEN_RD)) <0)
160 if ((denyreadset = ad_testlock(adp, eid, AD_FILELOCK_DENY_RD)) <0)
163 if ((access & OPENACC_RD) && denyreadset) {
167 if ((access & OPENACC_DRD) && readset) {
171 /* boolean logic is not enough, because getforkmode is not always telling the
174 if ((access & OPENACC_RD)) {
175 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_RD, 1, ofrefnum);
179 if ((access & OPENACC_DRD)) {
180 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_DENY_RD, 1, ofrefnum);
185 /* ------------same for writing -------------- */
186 if ((access & (OPENACC_WR | OPENACC_DWR))) {
187 if ((writeset = ad_testlock(adp, eid, AD_FILELOCK_OPEN_WR)) <0)
189 if ((denywriteset = ad_testlock(adp, eid, AD_FILELOCK_DENY_WR)) <0)
192 if ((access & OPENACC_WR) && denywriteset) {
196 if ((access & OPENACC_DWR) && writeset) {
200 if ((access & OPENACC_WR)) {
201 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_WR, 1, ofrefnum);
205 if ((access & OPENACC_DWR)) {
206 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_DENY_WR, 1, ofrefnum);
211 if ( access == (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD)) {
212 return ad_excl_lock(adp, eid);
217 /* ----------------------- */
218 int afp_openfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
222 struct ofork *ofork, *opened;
223 struct adouble *adsame = NULL;
225 int ret, adflags, eid;
227 uint16_t vid, bitmap, access, ofrefnum;
228 char fork, *path, *upath;
235 memcpy(&vid, ibuf, sizeof( vid ));
239 if (NULL == ( vol = getvolbyvid( vid ))) {
240 return( AFPERR_PARAM );
243 memcpy(&did, ibuf, sizeof( did ));
244 ibuf += sizeof( int );
246 if (NULL == ( dir = dirlookup( vol, did ))) {
250 memcpy(&bitmap, ibuf, sizeof( bitmap ));
251 bitmap = ntohs( bitmap );
252 ibuf += sizeof( bitmap );
253 memcpy(&access, ibuf, sizeof( access ));
254 access = ntohs( access );
255 ibuf += sizeof( access );
257 if ((vol->v_flags & AFPVOL_RO) && (access & OPENACC_WR)) {
261 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
262 return get_afp_errno(AFPERR_PARAM);
265 if (*s_path->m_name == '\0') {
267 return AFPERR_BADTYPE;
270 LOG(log_debug, logtype_afpd,
271 "afp_openfork(\"%s\", %s)",
272 fullpathname(s_path->u_name),
273 (fork & OPENFORK_RSCS) ? "OPENFORK_RSCS" : "OPENFORK_DATA");
275 /* stat() data fork st is set because it's not a dir */
276 switch ( s_path->st_errno ) {
282 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
284 LOG(log_error, logtype_afpd, "afp_openfork(%s): %s", s_path->m_name, strerror(errno));
287 /* FIXME should we check it first ? */
288 upath = s_path->u_name;
289 if (!vol_unix_priv(vol)) {
290 if (check_access(upath, access ) < 0) {
291 return AFPERR_ACCESS;
294 if (file_access(s_path, access ) < 0) {
295 return AFPERR_ACCESS;
300 /* XXX: this probably isn't the best way to do this. the already
301 open bits should really be set if the fork is opened by any
302 program, not just this one. however, that's problematic to do
303 if we can't write lock files somewhere. opened is also passed to
304 ad_open so that we can keep file locks together.
305 FIXME: add the fork we are opening?
307 if ((opened = of_findname(s_path))) {
308 adsame = opened->of_ad;
311 if ( fork == OPENFORK_DATA ) {
313 adflags = ADFLAGS_DF | ADFLAGS_HF ;
316 adflags = ADFLAGS_RF | ADFLAGS_HF;
319 path = s_path->m_name;
320 if (( ofork = of_alloc(vol, curdir, path, &ofrefnum, eid,
321 adsame, st)) == NULL ) {
322 return( AFPERR_NFILE );
326 if (access & OPENACC_WR) {
327 /* try opening in read-write mode */
328 if (ad_open(ofork->of_ad, upath, adflags, O_RDWR, O_RDWR) < 0) {
336 if (fork == OPENFORK_DATA) {
337 /* try to open only the data fork */
338 if (ad_open(ofork->of_ad, upath, ADFLAGS_DF, O_RDWR) < 0) {
341 adflags = ADFLAGS_DF;
343 /* here's the deal. we only try to create the resource
344 * fork if the user wants to open it for write acess. */
345 if (ad_open(ofork->of_ad, upath, adflags, O_RDWR | O_CREAT, 0666, O_RDWR | O_CREAT, 0666) < 0)
347 ofork->of_flags |= AFPFORK_OPEN;
356 ret = AFPERR_BADTYPE;
360 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
367 /* the ressource fork is open too */
368 ofork->of_flags |= AFPFORK_OPEN;
371 /* try opening in read-only mode */
373 if (ad_open(ofork->of_ad, upath, adflags, O_RDONLY, O_RDONLY) < 0) {
381 /* see if client asked for a read only data fork */
382 if (fork == OPENFORK_DATA) {
383 if (ad_open(ofork->of_ad, upath, ADFLAGS_DF, O_RDONLY) < 0) {
386 adflags = ADFLAGS_DF;
388 /* else we don't set AFPFORK_OPEN because there's no ressource fork file
389 * We need to check AFPFORK_OPEN in afp_closefork(). eg fork open read-only
390 * then create in open read-write.
391 * FIXME , it doesn't play well with byte locking example:
392 * ressource fork open read only
393 * locking set on it (no effect, there's no file!)
394 * ressource fork open read write now
403 ret = AFPERR_BADTYPE;
407 LOG(log_error, logtype_afpd, "afp_openfork(\"%s\"): %s",
408 fullpathname(s_path->m_name), strerror(errno) );
414 /* the ressource fork is open too */
415 ofork->of_flags |= AFPFORK_OPEN;
419 if ((adflags & ADFLAGS_RF) && (ad_get_RF_flags( ofork->of_ad) & O_CREAT)) {
420 if (ad_setname(ofork->of_ad, path)) {
421 ad_flush( ofork->of_ad );
425 if ((ret = getforkparams(ofork, bitmap, rbuf + 2 * sizeof(int16_t), &buflen)) != AFP_OK) {
426 ad_close( ofork->of_ad, adflags );
430 *rbuflen = buflen + 2 * sizeof( uint16_t );
431 bitmap = htons( bitmap );
432 memcpy(rbuf, &bitmap, sizeof( uint16_t ));
433 rbuf += sizeof( uint16_t );
435 /* check WriteInhibit bit if we have a ressource fork
436 * the test is done here, after some Mac trafic capture
438 if (ad_meta_fileno(ofork->of_ad) != -1) { /* META */
439 ad_getattr(ofork->of_ad, &bshort);
440 if ((bshort & htons(ATTRBIT_NOWRITE)) && (access & OPENACC_WR)) {
441 ad_close( ofork->of_ad, adflags );
444 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
445 return(AFPERR_OLOCK);
450 * synchronization locks:
453 /* don't try to lock non-existent rforks. */
454 if ((eid == ADEID_DFORK) || (ad_meta_fileno(ofork->of_ad) != -1)) { /* META */
456 ret = fork_setmode(ofork->of_ad, eid, access, ofrefnum);
457 /* can we access the fork? */
460 ad_close( ofork->of_ad, adflags );
463 case EAGAIN: /* return data anyway */
467 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
468 return( AFPERR_DENYCONF );
472 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_lock: %s", s_path->m_name, strerror(ret) );
473 return( AFPERR_PARAM );
476 if ((access & OPENACC_WR))
477 ofork->of_flags |= AFPFORK_ACCWR;
479 /* the file may be open read only without ressource fork */
480 if ((access & OPENACC_RD))
481 ofork->of_flags |= AFPFORK_ACCRD;
483 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
489 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
493 int afp_setforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen, char *rbuf _U_, size_t *rbuflen)
497 uint16_t ofrefnum, bitmap;
505 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
506 ibuf += sizeof( ofrefnum );
508 memcpy(&bitmap, ibuf, sizeof(bitmap));
509 bitmap = ntohs(bitmap);
510 ibuf += sizeof( bitmap );
513 if (NULL == ( ofork = of_find( ofrefnum )) ) {
514 LOG(log_error, logtype_afpd, "afp_setforkparams: of_find(%d) could not locate fork", ofrefnum );
515 return( AFPERR_PARAM );
518 if (ofork->of_vol->v_flags & AFPVOL_RO)
521 if ((ofork->of_flags & AFPFORK_ACCWR) == 0)
522 return AFPERR_ACCESS;
524 if ( ofork->of_flags & AFPFORK_DATA) {
526 } else if (ofork->of_flags & AFPFORK_RSRC) {
531 if ( ( (bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) ))
532 && eid == ADEID_RFORK
534 ( (bitmap & ( (1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN) ))
535 && eid == ADEID_DFORK)) {
536 return AFPERR_BITMAP;
540 if ((bitmap & ( (1<<FILPBIT_EXTDFLEN) | (1<<FILPBIT_EXTRFLEN) ))) {
541 if (afp_version >= 30) {
545 return AFPERR_BITMAP;
548 if (ibuflen < 2+ sizeof(ofrefnum) + sizeof(bitmap) + is64 +4)
549 return AFPERR_PARAM ;
551 size = get_off_t(&ibuf, is64);
554 return AFPERR_PARAM; /* Some MacOS don't return an error they just don't change the size! */
557 if (bitmap == (1<<FILPBIT_DFLEN) || bitmap == (1<<FILPBIT_EXTDFLEN)) {
558 st_size = ad_size(ofork->of_ad, eid);
560 if (st_size > size &&
561 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0)
562 goto afp_setfork_err;
564 err = ad_dtruncate( ofork->of_ad, size );
566 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
568 goto afp_setfork_err;
569 } else if (bitmap == (1<<FILPBIT_RFLEN) || bitmap == (1<<FILPBIT_EXTRFLEN)) {
570 ad_refresh( ofork->of_ad );
572 st_size = ad_size(ofork->of_ad, eid);
574 if (st_size > size &&
575 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0) {
576 goto afp_setfork_err;
578 err = ad_rtruncate(ofork->of_ad, size);
580 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
582 goto afp_setfork_err;
584 if (ad_flush( ofork->of_ad ) < 0) {
585 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): ad_flush: %s", of_name(ofork), strerror(errno) );
589 return AFPERR_BITMAP;
592 if ( flushfork( ofork ) < 0 ) {
593 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): flushfork: %s", of_name(ofork), strerror(errno) );
608 return AFPERR_ACCESS;
619 /* for this to work correctly, we need to check for locks before each
620 * read and write. that's most easily handled by always doing an
621 * appropriate check before each ad_read/ad_write. other things
622 * that can change files like truncate are handled internally to those
625 #define ENDBIT(a) ((a) & 0x80)
626 #define UNLOCKBIT(a) ((a) & 0x01)
629 /* ---------------------- */
630 static int byte_lock(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
633 off_t offset, length;
641 /* figure out parameters */
643 flags = *ibuf; /* first bit = endflag, lastbit = lockflag */
645 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
646 ibuf += sizeof(ofrefnum);
648 if (NULL == ( ofork = of_find( ofrefnum )) ) {
649 LOG(log_error, logtype_afpd, "afp_bytelock: of_find(%d) could not locate fork", ofrefnum );
650 return( AFPERR_PARAM );
653 if ( ofork->of_flags & AFPFORK_DATA) {
655 } else if (ofork->of_flags & AFPFORK_RSRC) {
660 offset = get_off_t(&ibuf, is64);
661 length = get_off_t(&ibuf, is64);
663 /* FIXME AD_FILELOCK test is surely wrong */
665 length = BYTELOCK_MAX;
666 else if (!length || is_neg(is64, length)) {
668 } else if ((length >= AD_FILELOCK_BASE) && -1 == (ad_reso_fileno(ofork->of_ad))) { /* HF ?*/
673 offset += ad_size(ofork->of_ad, eid);
674 /* FIXME what do we do if file size > 2 GB and
675 it's not byte_lock_ext?
678 if (offset < 0) /* error if we have a negative offset */
681 /* if the file is a read-only file, we use read locks instead of
682 * write locks. that way, we can prevent anyone from initiating
684 lockop = UNLOCKBIT(flags) ? ADLOCK_CLR : ADLOCK_WR;
685 if (ad_lock(ofork->of_ad, eid, lockop, offset, length,
686 ofork->of_refnum) < 0) {
690 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_LOCK;
696 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_RANGEOVR;
704 *rbuflen = set_off_t (offset, rbuf, is64);
708 /* --------------------------- */
709 int afp_bytelock(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
711 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 0);
714 /* --------------------------- */
715 int afp_bytelock_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
717 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 1);
722 /* --------------------------- */
723 static int crlf(struct ofork *of)
727 if ( ad_meta_fileno( of->of_ad ) == -1 || !memcmp( ufinderi, ad_entry( of->of_ad, ADEID_FINDERI),8)) { /* META */
728 /* no resource fork or no finderinfo, use our files extension mapping */
729 if (!( em = getextmap( of_name(of) )) || memcmp( "TEXT", em->em_type, sizeof( em->em_type ))) {
732 /* file type is TEXT */
735 } else if ( !memcmp( "TEXT", ad_entry( of->of_ad, ADEID_FINDERI ), 4 )) {
742 static ssize_t read_file(struct ofork *ofork, int eid,
743 off_t offset, u_char nlmask,
744 u_char nlchar, char *rbuf,
745 size_t *rbuflen, const int xlate)
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 ) {
777 * If this file is of type TEXT, then swap \012 to \015.
780 for ( p = rbuf, q = p + cc; p < q; p++ ) {
781 if ( *p == '\012' ) {
783 } else if ( *p == '\015' ) {
792 return( AFPERR_EOF );
797 /* -----------------------------
798 * with ddp, afp_read can return fewer bytes than in reqcount
799 * so return EOF only if read actually past end of file not
800 * if offset +reqcount > size of file
802 * getfork size ==> 10430
803 * read fork offset 0 size 10752 ???? ==> 4264 bytes (without EOF)
804 * read fork offset 4264 size 6128 ==> 4264 (without EOF)
805 * read fork offset 9248 size 1508 ==> 1182 (EOF)
806 * 10752 is a bug in Mac 7.5.x finder
808 * with dsi, should we check that reqcount < server quantum?
810 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
813 off_t offset, saveoff, reqcount, savereqcount;
817 u_char nlmask, nlchar;
820 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
821 ibuf += sizeof( u_short );
823 if (NULL == ( ofork = of_find( ofrefnum )) ) {
824 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
829 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
833 offset = get_off_t(&ibuf, is64);
834 reqcount = get_off_t(&ibuf, is64);
836 LOG(log_debug, logtype_afpd,
837 "afp_read(off: %" PRIu64 ", size: %" PRIu64 ", fork: %s)", offset, reqcount,
838 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
847 /* if we wanted to be picky, we could add in the following
848 * bit: if (afp_version == 11 && !(nlmask == 0xFF || !nlmask))
850 if (reqcount < 0 || offset < 0) {
855 if ( ofork->of_flags & AFPFORK_DATA) {
857 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
858 } else if (ofork->of_flags & AFPFORK_RSRC) {
860 } else { /* fork wasn't opened. this should never really happen. */
865 /* zero request count */
871 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd)",
872 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount);
874 savereqcount = reqcount;
876 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, saveoff, savereqcount,ofork->of_refnum) < 0) {
881 *rbuflen = MIN(reqcount, *rbuflen);
882 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): reading %jd bytes from file",
883 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
885 err = read_file(ofork, eid, offset, nlmask, nlchar, rbuf, rbuflen, xlate);
888 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): got %jd bytes from file",
889 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
891 /* dsi can stream requests. we can only do this if we're not checking
892 * for an end-of-line character. oh well. */
893 if ((obj->proto == AFPPROTO_DSI) && (*rbuflen < reqcount) && !nlmask) {
894 DSI *dsi = obj->handle;
897 /* reqcount isn't always truthful. we need to deal with that. */
898 size = ad_size(ofork->of_ad, eid);
900 /* subtract off the offset */
902 if (reqcount > size) {
909 /* dsi_readinit() returns size of next read buffer. by this point,
910 * we know that we're sending some data. if we fail, something
911 * horrible happened. */
912 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
915 /* due to the nature of afp packets, we have to exit if we get
916 an error. we can't do this with translation on. */
921 fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
923 if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) {
924 if (errno == EINVAL || errno == ENOSYS)
927 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
939 /* fill up our buffer. */
940 while (*rbuflen > 0) {
941 cc = read_file(ofork, eid, offset, nlmask, nlchar, rbuf,rbuflen, xlate);
946 /* dsi_read() also returns buffer size of next allocation */
947 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
956 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
958 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
959 obj->exit(EXITERR_CLNT);
963 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
971 /* ---------------------- */
972 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
974 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
977 /* ---------------------- */
978 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
980 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
983 /* ---------------------- */
984 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
992 memcpy(&vid, ibuf, sizeof(vid));
993 if (NULL == ( vol = getvolbyvid( vid )) ) {
994 return( AFPERR_PARAM );
1001 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1003 struct ofork *ofork;
1008 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1010 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1011 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
1012 return( AFPERR_PARAM );
1015 LOG(log_debug, logtype_afpd, "afp_flushfork(fork: %s)",
1016 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1018 if ( flushfork( ofork ) < 0 ) {
1019 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
1027 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
1028 fsync(2) on OSX is implemented differently than on other platforms.
1029 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
1031 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1033 struct ofork *ofork;
1039 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
1040 ibuf += sizeof( ofrefnum );
1042 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1043 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
1044 return( AFPERR_PARAM );
1047 LOG(log_debug, logtype_afpd, "afp_syncfork(fork: %s)",
1048 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1050 if ( flushfork( ofork ) < 0 ) {
1051 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1058 /* this is very similar to closefork */
1059 int flushfork(struct ofork *ofork)
1063 int err = 0, doflush = 0;
1065 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1066 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1067 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1068 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1072 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1073 (ofork->of_flags & AFPFORK_RSRC)) {
1075 /* read in the rfork length */
1076 ad_refresh(ofork->of_ad);
1078 /* set the date if we're dirty */
1079 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1080 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1081 ofork->of_flags &= ~AFPFORK_DIRTY;
1085 /* flush the header */
1086 if (doflush && ad_flush(ofork->of_ad) < 0)
1089 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1093 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1094 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1100 int afp_closefork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1102 struct ofork *ofork;
1107 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1109 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1110 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1111 return( AFPERR_PARAM );
1114 LOG(log_debug, logtype_afpd, "afp_closefork(fork: %s)",
1115 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1117 if ( of_closefork( ofork ) < 0 ) {
1118 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1119 return( AFPERR_PARAM );
1126 static ssize_t write_file(struct ofork *ofork, int eid,
1127 off_t offset, char *rbuf,
1128 size_t rbuflen, const int xlate)
1134 * If this file is of type TEXT, swap \015 to \012.
1137 for ( p = rbuf, q = p + rbuflen; p < q; p++ ) {
1138 if ( *p == '\015' ) {
1140 } else if ( *p == '\012' ) {
1146 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1147 rbuf, rbuflen)) < 0 ) {
1152 return( AFPERR_DFULL );
1154 return AFPERR_ACCESS;
1156 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1157 return( AFPERR_PARAM );
1165 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1166 * the client may have sent us a bunch of data that's not reflected
1167 * in reqcount et al. */
1168 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1170 struct ofork *ofork;
1171 off_t offset, saveoff, reqcount, oldsize, newsize;
1172 int endflag, eid, xlate = 0, err = AFP_OK;
1176 /* figure out parameters */
1178 endflag = ENDBIT(*ibuf);
1180 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1181 ibuf += sizeof( ofrefnum );
1183 offset = get_off_t(&ibuf, is64);
1184 reqcount = get_off_t(&ibuf, is64);
1186 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1187 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1192 LOG(log_debug, logtype_afpd, "afp_write(off: %" PRIu64 ", size: %" PRIu64 ", fork: %s)",
1193 offset, reqcount, (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
1195 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1196 err = AFPERR_ACCESS;
1201 writtenfork = ofork;
1204 if ( ofork->of_flags & AFPFORK_DATA) {
1206 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
1207 } else if (ofork->of_flags & AFPFORK_RSRC) {
1210 err = AFPERR_ACCESS; /* should never happen */
1214 oldsize = ad_size(ofork->of_ad, eid);
1218 /* handle bogus parameters */
1219 if (reqcount < 0 || offset < 0) {
1224 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
1226 /* offset can overflow on 64-bit capable filesystems.
1227 * report disk full if that's going to happen. */
1228 if (sum_neg(is64, offset, reqcount)) {
1233 if (!reqcount) { /* handle request counts of 0 */
1235 *rbuflen = set_off_t (offset, rbuf, is64);
1240 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff,
1241 reqcount, ofork->of_refnum) < 0) {
1246 /* this is yucky, but dsi can stream i/o and asp can't */
1247 switch (obj->proto) {
1250 DSI *dsi = obj->handle;
1252 /* find out what we have already and write it out. */
1253 cc = dsi_writeinit(dsi, rbuf, *rbuflen);
1254 if (!cc || (cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1255 dsi_writeflush(dsi);
1257 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1262 #if 0 /*def HAVE_SENDFILE_WRITE*/
1263 if (!(xlate || obj->options.flags & OPTION_DEBUG)) {
1264 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
1265 offset, dsi->datasize)) < 0) {
1273 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1274 goto afp_write_loop;
1276 dsi_writeflush(dsi);
1278 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1279 reqcount, ofork->of_refnum);
1284 goto afp_write_done;
1286 #endif /* 0, was HAVE_SENDFILE_WRITE */
1288 /* loop until everything gets written. currently
1289 * dsi_write handles the end case by itself. */
1290 while ((cc = dsi_write(dsi, rbuf, *rbuflen))) {
1291 if ((cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1292 dsi_writeflush(dsi);
1294 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1295 reqcount, ofork->of_refnum);
1304 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1305 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1306 ofork->of_flags |= AFPFORK_DIRTY;
1308 /* we have modified any fork, remember until close_fork */
1309 ofork->of_flags |= AFPFORK_MODIFIED;
1311 /* update write count */
1312 ofork->of_vol->v_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1314 *rbuflen = set_off_t (offset, rbuf, is64);
1318 if (obj->proto == AFPPROTO_DSI) {
1319 dsi_writeinit(obj->handle, rbuf, *rbuflen);
1320 dsi_writeflush(obj->handle);
1322 if (err != AFP_OK) {
1328 /* ---------------------------- */
1329 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1331 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1334 /* ----------------------------
1335 * FIXME need to deal with SIGXFSZ signal
1337 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1339 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1342 /* ---------------------------- */
1343 int afp_getforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1345 struct ofork *ofork;
1347 uint16_t ofrefnum, bitmap;
1350 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1351 ibuf += sizeof( ofrefnum );
1352 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1353 bitmap = ntohs( bitmap );
1354 ibuf += sizeof( bitmap );
1357 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1358 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1359 return( AFPERR_PARAM );
1362 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) { /* META */
1363 if ( ad_refresh( ofork->of_ad ) < 0 ) {
1364 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1365 return( AFPERR_PARAM );
1369 if (AFP_OK != ( ret = getforkparams( ofork, bitmap,
1370 rbuf + sizeof( u_short ), &buflen ))) {
1374 *rbuflen = buflen + sizeof( u_short );
1375 bitmap = htons( bitmap );
1376 memcpy(rbuf, &bitmap, sizeof( bitmap ));