2 * $Id: fork.c,v 1.73 2010-03-30 12:55:26 franklahm Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
17 #include <atalk/adouble.h>
18 #include <atalk/logger.h>
20 #include <sys/param.h>
21 #include <sys/socket.h>
23 #include <netatalk/at.h>
25 #include <atalk/dsi.h>
26 #include <atalk/atp.h>
27 #include <atalk/asp.h>
28 #include <atalk/afp.h>
29 #include <atalk/util.h>
30 #include <atalk/cnid.h>
31 #include <atalk/globals.h>
35 #include "directory.h"
40 #define Debug(a) ((a)->options.flags & OPTION_DEBUG)
46 struct ofork *writtenfork;
49 static int getforkparams(struct ofork *ofork, u_int16_t bitmap, char *buf, size_t *buflen)
59 /* can only get the length of the opened fork */
60 if ( ( (bitmap & ((1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN)))
61 && (ofork->of_flags & AFPFORK_RSRC))
63 ( (bitmap & ((1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN)))
64 && (ofork->of_flags & AFPFORK_DATA))) {
65 return( AFPERR_BITMAP );
68 if ( ad_reso_fileno( ofork->of_ad ) == -1 ) { /* META ? */
75 dir = dirlookup(vol, ofork->of_did);
77 if (NULL == (path.u_name = mtoupath(vol, of_name(ofork), dir->d_did, utf8_encoding()))) {
78 return( AFPERR_MISC );
80 path.m_name = of_name(ofork);
83 if ( bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) |
84 (1<<FILPBIT_FNUM) | (1 << FILPBIT_CDATE) |
85 (1 << FILPBIT_MDATE) | (1 << FILPBIT_BDATE))) {
86 if ( ad_data_fileno( ofork->of_ad ) <= 0 ) {
87 /* 0 is for symlink */
88 if (movecwd(vol, dir) < 0)
89 return( AFPERR_NOOBJ );
90 if ( lstat( path.u_name, st ) < 0 )
91 return( AFPERR_NOOBJ );
93 if ( fstat( ad_data_fileno( ofork->of_ad ), st ) < 0 ) {
94 return( AFPERR_BITMAP );
98 return getmetadata(vol, bitmap, &path, dir, buf, buflen, adp );
101 /* ---------------------------- */
102 static off_t get_off_t(char **ibuf, int is64)
108 memcpy(&temp, *ibuf, sizeof( temp ));
109 ret = ntohl(temp); /* ntohl is unsigned */
110 *ibuf += sizeof(temp);
113 memcpy(&temp, *ibuf, sizeof( temp ));
114 *ibuf += sizeof(temp);
115 ret = ntohl(temp)| (ret << 32);
118 ret = (int)ret; /* sign extend */
123 /* ---------------------- */
124 static int set_off_t(off_t offset, char *rbuf, int is64)
131 temp = htonl(offset >> 32);
132 memcpy(rbuf, &temp, sizeof( temp ));
133 rbuf += sizeof(temp);
134 ret = sizeof( temp );
135 offset &= 0xffffffff;
137 temp = htonl(offset);
138 memcpy(rbuf, &temp, sizeof( temp ));
139 ret += sizeof( temp );
144 /* ------------------------
146 static int is_neg(int is64, off_t val)
148 if (val < 0 || (sizeof(off_t) == 8 && !is64 && (val & 0x80000000U)))
153 static int sum_neg(int is64, off_t offset, off_t reqcount)
155 if (is_neg(is64, offset +reqcount) )
160 /* -------------------------
162 static int setforkmode(struct adouble *adp, int eid, int ofrefnum, off_t what)
164 return ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, what, 1, ofrefnum);
167 /* -------------------------
169 int getforkmode(struct adouble *adp, int eid, off_t what)
171 return ad_testlock(adp, eid, what);
174 /* -------------------------
176 static int fork_setmode(struct adouble *adp, int eid, int access, int ofrefnum)
184 if (! (access & (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD))) {
185 return setforkmode(adp, eid, ofrefnum, AD_FILELOCK_OPEN_NONE);
188 if ((access & (OPENACC_RD | OPENACC_DRD))) {
189 if ((readset = getforkmode(adp, eid, AD_FILELOCK_OPEN_RD)) <0)
191 if ((denyreadset = getforkmode(adp, eid, AD_FILELOCK_DENY_RD)) <0)
194 if ((access & OPENACC_RD) && denyreadset) {
198 if ((access & OPENACC_DRD) && readset) {
202 /* boolean logic is not enough, because getforkmode is not always telling the
205 if ((access & OPENACC_RD)) {
206 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_OPEN_RD);
210 if ((access & OPENACC_DRD)) {
211 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_DENY_RD);
216 /* ------------same for writing -------------- */
217 if ((access & (OPENACC_WR | OPENACC_DWR))) {
218 if ((writeset = getforkmode(adp, eid, AD_FILELOCK_OPEN_WR)) <0)
220 if ((denywriteset = getforkmode(adp, eid, AD_FILELOCK_DENY_WR)) <0)
223 if ((access & OPENACC_WR) && denywriteset) {
227 if ((access & OPENACC_DWR) && writeset) {
231 if ((access & OPENACC_WR)) {
232 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_OPEN_WR);
236 if ((access & OPENACC_DWR)) {
237 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_DENY_WR);
242 if ( access == (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD)) {
243 return ad_excl_lock(adp, eid);
248 /* ----------------------- */
249 int afp_openfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
253 struct ofork *ofork, *opened;
254 struct adouble *adsame = NULL;
256 int ret, adflags, eid;
258 u_int16_t vid, bitmap, access, ofrefnum;
259 char fork, *path, *upath;
266 memcpy(&vid, ibuf, sizeof( vid ));
270 if (NULL == ( vol = getvolbyvid( vid ))) {
271 return( AFPERR_PARAM );
274 memcpy(&did, ibuf, sizeof( did ));
275 ibuf += sizeof( int );
277 if (NULL == ( dir = dirlookup( vol, did ))) {
281 memcpy(&bitmap, ibuf, sizeof( bitmap ));
282 bitmap = ntohs( bitmap );
283 ibuf += sizeof( bitmap );
284 memcpy(&access, ibuf, sizeof( access ));
285 access = ntohs( access );
286 ibuf += sizeof( access );
288 if ((vol->v_flags & AFPVOL_RO) && (access & OPENACC_WR)) {
292 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
293 return get_afp_errno(AFPERR_PARAM);
296 if (*s_path->m_name == '\0') {
298 return AFPERR_BADTYPE;
301 /* stat() data fork st is set because it's not a dir */
302 switch ( s_path->st_errno ) {
308 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
310 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
313 /* FIXME should we check it first ? */
314 upath = s_path->u_name;
315 if (!vol_unix_priv(vol)) {
316 if (check_access(upath, access ) < 0) {
317 return AFPERR_ACCESS;
321 if (file_access(s_path, access ) < 0) {
322 return AFPERR_ACCESS;
327 /* XXX: this probably isn't the best way to do this. the already
328 open bits should really be set if the fork is opened by any
329 program, not just this one. however, that's problematic to do
330 if we can't write lock files somewhere. opened is also passed to
331 ad_open so that we can keep file locks together.
332 FIXME: add the fork we are opening?
334 if ((opened = of_findname(s_path))) {
335 adsame = opened->of_ad;
338 if ( fork == OPENFORK_DATA ) {
340 adflags = ADFLAGS_DF|ADFLAGS_HF;
343 adflags = ADFLAGS_HF;
346 path = s_path->m_name;
347 if (( ofork = of_alloc(vol, curdir, path, &ofrefnum, eid,
348 adsame, st)) == NULL ) {
349 return( AFPERR_NFILE );
353 if (access & OPENACC_WR) {
354 /* try opening in read-write mode */
355 if (ad_open(upath, adflags, O_RDWR, 0, ofork->of_ad) < 0) {
363 if (fork == OPENFORK_DATA) {
364 /* try to open only the data fork */
365 if (ad_open(upath, ADFLAGS_DF, O_RDWR, 0, ofork->of_ad) < 0) {
368 adflags = ADFLAGS_DF;
371 /* here's the deal. we only try to create the resource
372 * fork if the user wants to open it for write acess. */
373 if (ad_open(upath, adflags, O_RDWR | O_CREAT, 0666, ofork->of_ad) < 0)
375 ofork->of_flags |= AFPFORK_OPEN;
384 ret = AFPERR_BADTYPE;
388 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
395 /* the ressource fork is open too */
396 ofork->of_flags |= AFPFORK_OPEN;
399 /* try opening in read-only mode */
401 if (ad_open(upath, adflags, O_RDONLY, 0, ofork->of_ad) < 0) {
409 /* see if client asked for a read only data fork */
410 if (fork == OPENFORK_DATA) {
411 if (ad_open(upath, ADFLAGS_DF, O_RDONLY, 0, ofork->of_ad) < 0) {
414 adflags = ADFLAGS_DF;
416 /* else we don't set AFPFORK_OPEN because there's no ressource fork file
417 * We need to check AFPFORK_OPEN in afp_closefork(). eg fork open read-only
418 * then create in open read-write.
419 * FIXME , it doesn't play well with byte locking example:
420 * ressource fork open read only
421 * locking set on it (no effect, there's no file!)
422 * ressource fork open read write now
431 ret = AFPERR_BADTYPE;
435 LOG(log_error, logtype_afpd, "afp_openfork('%s/%s'): ad_open: errno: %i (%s)",
436 getcwdpath, s_path->m_name, errno, strerror(errno) );
442 /* the ressource fork is open too */
443 ofork->of_flags |= AFPFORK_OPEN;
447 if ((adflags & ADFLAGS_HF) && (ad_get_HF_flags( ofork->of_ad) & O_CREAT)) {
448 if (ad_setname(ofork->of_ad, path)) {
449 ad_flush( ofork->of_ad );
453 if (( ret = getforkparams(ofork, bitmap, rbuf + 2 * sizeof( u_int16_t ),
454 &buflen )) != AFP_OK ) {
455 ad_close( ofork->of_ad, adflags );
459 *rbuflen = buflen + 2 * sizeof( u_int16_t );
460 bitmap = htons( bitmap );
461 memcpy(rbuf, &bitmap, sizeof( u_int16_t ));
462 rbuf += sizeof( u_int16_t );
464 /* check WriteInhibit bit if we have a ressource fork
465 * the test is done here, after some Mac trafic capture
467 if (ad_meta_fileno(ofork->of_ad) != -1) { /* META */
468 ad_getattr(ofork->of_ad, &bshort);
469 if ((bshort & htons(ATTRBIT_NOWRITE)) && (access & OPENACC_WR)) {
470 ad_close( ofork->of_ad, adflags );
473 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
474 return(AFPERR_OLOCK);
479 * synchronization locks:
482 /* don't try to lock non-existent rforks. */
483 if ((eid == ADEID_DFORK) || (ad_meta_fileno(ofork->of_ad) != -1)) { /* META */
485 ret = fork_setmode(ofork->of_ad, eid, access, ofrefnum);
486 /* can we access the fork? */
489 ad_close( ofork->of_ad, adflags );
492 case EAGAIN: /* return data anyway */
496 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
497 return( AFPERR_DENYCONF );
501 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_lock: %s", s_path->m_name, strerror(ret) );
502 return( AFPERR_PARAM );
505 if ((access & OPENACC_WR))
506 ofork->of_flags |= AFPFORK_ACCWR;
508 /* the file may be open read only without ressource fork */
509 if ((access & OPENACC_RD))
510 ofork->of_flags |= AFPFORK_ACCRD;
512 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
518 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
522 int afp_setforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen, char *rbuf _U_, size_t *rbuflen)
526 u_int16_t ofrefnum, bitmap;
534 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
535 ibuf += sizeof( ofrefnum );
537 memcpy(&bitmap, ibuf, sizeof(bitmap));
538 bitmap = ntohs(bitmap);
539 ibuf += sizeof( bitmap );
542 if (NULL == ( ofork = of_find( ofrefnum )) ) {
543 LOG(log_error, logtype_afpd, "afp_setforkparams: of_find(%d) could not locate fork", ofrefnum );
544 return( AFPERR_PARAM );
547 if (ofork->of_vol->v_flags & AFPVOL_RO)
550 if ((ofork->of_flags & AFPFORK_ACCWR) == 0)
551 return AFPERR_ACCESS;
553 if ( ofork->of_flags & AFPFORK_DATA) {
555 } else if (ofork->of_flags & AFPFORK_RSRC) {
560 if ( ( (bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) ))
561 && eid == ADEID_RFORK
563 ( (bitmap & ( (1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN) ))
564 && eid == ADEID_DFORK)) {
565 return AFPERR_BITMAP;
569 if ((bitmap & ( (1<<FILPBIT_EXTDFLEN) | (1<<FILPBIT_EXTRFLEN) ))) {
570 if (afp_version >= 30) {
574 return AFPERR_BITMAP;
577 if (ibuflen < 2+ sizeof(ofrefnum) + sizeof(bitmap) + is64 +4)
578 return AFPERR_PARAM ;
580 size = get_off_t(&ibuf, is64);
583 return AFPERR_PARAM; /* Some MacOS don't return an error they just don't change the size! */
586 if (bitmap == (1<<FILPBIT_DFLEN) || bitmap == (1<<FILPBIT_EXTDFLEN)) {
587 st_size = ad_size(ofork->of_ad, eid);
589 if (st_size > size &&
590 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0)
591 goto afp_setfork_err;
593 err = ad_dtruncate( ofork->of_ad, size );
595 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
597 goto afp_setfork_err;
598 } else if (bitmap == (1<<FILPBIT_RFLEN) || bitmap == (1<<FILPBIT_EXTRFLEN)) {
599 ad_refresh( ofork->of_ad );
601 st_size = ad_size(ofork->of_ad, eid);
603 if (st_size > size &&
604 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0) {
605 goto afp_setfork_err;
607 err = ad_rtruncate(ofork->of_ad, size);
609 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
611 goto afp_setfork_err;
613 if (ad_flush( ofork->of_ad ) < 0) {
614 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): ad_flush: %s", of_name(ofork), strerror(errno) );
618 return AFPERR_BITMAP;
621 if ( flushfork( ofork ) < 0 ) {
622 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): flushfork: %s", of_name(ofork), strerror(errno) );
637 return AFPERR_ACCESS;
648 /* for this to work correctly, we need to check for locks before each
649 * read and write. that's most easily handled by always doing an
650 * appropriate check before each ad_read/ad_write. other things
651 * that can change files like truncate are handled internally to those
654 #define ENDBIT(a) ((a) & 0x80)
655 #define UNLOCKBIT(a) ((a) & 0x01)
658 /* ---------------------- */
659 static int byte_lock(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
662 off_t offset, length;
670 /* figure out parameters */
672 flags = *ibuf; /* first bit = endflag, lastbit = lockflag */
674 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
675 ibuf += sizeof(ofrefnum);
677 if (NULL == ( ofork = of_find( ofrefnum )) ) {
678 LOG(log_error, logtype_afpd, "afp_bytelock: of_find(%d) could not locate fork", ofrefnum );
679 return( AFPERR_PARAM );
682 if ( ofork->of_flags & AFPFORK_DATA) {
684 } else if (ofork->of_flags & AFPFORK_RSRC) {
689 offset = get_off_t(&ibuf, is64);
690 length = get_off_t(&ibuf, is64);
692 /* FIXME AD_FILELOCK test is surely wrong */
694 length = BYTELOCK_MAX;
695 else if (!length || is_neg(is64, length)) {
697 } else if ((length >= AD_FILELOCK_BASE) && -1 == (ad_reso_fileno(ofork->of_ad))) { /* HF ?*/
702 offset += ad_size(ofork->of_ad, eid);
703 /* FIXME what do we do if file size > 2 GB and
704 it's not byte_lock_ext?
707 if (offset < 0) /* error if we have a negative offset */
710 /* if the file is a read-only file, we use read locks instead of
711 * write locks. that way, we can prevent anyone from initiating
713 lockop = UNLOCKBIT(flags) ? ADLOCK_CLR : ADLOCK_WR;
714 if (ad_lock(ofork->of_ad, eid, lockop, offset, length,
715 ofork->of_refnum) < 0) {
719 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_LOCK;
725 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_RANGEOVR;
733 *rbuflen = set_off_t (offset, rbuf, is64);
737 /* --------------------------- */
738 int afp_bytelock(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
740 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 0);
743 /* --------------------------- */
744 int afp_bytelock_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
746 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 1);
751 /* --------------------------- */
752 static int crlf(struct ofork *of)
756 if ( ad_meta_fileno( of->of_ad ) == -1 || !memcmp( ufinderi, ad_entry( of->of_ad, ADEID_FINDERI),8)) { /* META */
757 /* no resource fork or no finderinfo, use our files extension mapping */
758 if (!( em = getextmap( of_name(of) )) || memcmp( "TEXT", em->em_type, sizeof( em->em_type ))) {
761 /* file type is TEXT */
764 } else if ( !memcmp( "TEXT", ad_entry( of->of_ad, ADEID_FINDERI ), 4 )) {
771 static ssize_t read_file(struct ofork *ofork, int eid,
772 off_t offset, u_char nlmask,
773 u_char nlchar, char *rbuf,
774 size_t *rbuflen, const int xlate)
780 cc = ad_read(ofork->of_ad, eid, offset, rbuf, *rbuflen);
782 LOG(log_error, logtype_afpd, "afp_read(%s): ad_read: %s", of_name(ofork), strerror(errno) );
784 return( AFPERR_PARAM );
786 if ( (size_t)cc < *rbuflen ) {
794 for ( p = rbuf, q = p + cc; p < q; ) {
795 if (( *p++ & nlmask ) == nlchar ) {
806 * If this file is of type TEXT, then swap \012 to \015.
809 for ( p = rbuf, q = p + cc; p < q; p++ ) {
810 if ( *p == '\012' ) {
812 } else if ( *p == '\015' ) {
821 return( AFPERR_EOF );
826 /* -----------------------------
827 * with ddp, afp_read can return fewer bytes than in reqcount
828 * so return EOF only if read actually past end of file not
829 * if offset +reqcount > size of file
831 * getfork size ==> 10430
832 * read fork offset 0 size 10752 ???? ==> 4264 bytes (without EOF)
833 * read fork offset 4264 size 6128 ==> 4264 (without EOF)
834 * read fork offset 9248 size 1508 ==> 1182 (EOF)
835 * 10752 is a bug in Mac 7.5.x finder
837 * with dsi, should we check that reqcount < server quantum?
839 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
842 off_t offset, saveoff, reqcount, savereqcount;
846 u_char nlmask, nlchar;
849 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
850 ibuf += sizeof( u_short );
852 if (NULL == ( ofork = of_find( ofrefnum )) ) {
853 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
858 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
862 offset = get_off_t(&ibuf, is64);
863 reqcount = get_off_t(&ibuf, is64);
872 /* if we wanted to be picky, we could add in the following
873 * bit: if (afp_version == 11 && !(nlmask == 0xFF || !nlmask))
875 if (reqcount < 0 || offset < 0) {
880 if ( ofork->of_flags & AFPFORK_DATA) {
882 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
883 } else if (ofork->of_flags & AFPFORK_RSRC) {
885 } else { /* fork wasn't opened. this should never really happen. */
890 /* zero request count */
896 savereqcount = reqcount;
898 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, saveoff, savereqcount,ofork->of_refnum) < 0) {
906 *rbuflen = MIN(reqcount, *rbuflen);
907 err = read_file(ofork, eid, offset, nlmask, nlchar, rbuf, rbuflen, xlate);
911 /* dsi can stream requests. we can only do this if we're not checking
912 * for an end-of-line character. oh well. */
913 if ((obj->proto == AFPPROTO_DSI) && (*rbuflen < reqcount) && !nlmask) {
914 DSI *dsi = obj->handle;
917 /* reqcount isn't always truthful. we need to deal with that. */
918 size = ad_size(ofork->of_ad, eid);
920 /* subtract off the offset */
922 if (reqcount > size) {
929 /* dsi_readinit() returns size of next read buffer. by this point,
930 * we know that we're sending some data. if we fail, something
931 * horrible happened. */
932 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
935 /* due to the nature of afp packets, we have to exit if we get
936 an error. we can't do this with translation on. */
938 if (!(xlate || Debug(obj) )) {
941 fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
942 if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) {
943 if (errno == EINVAL || errno == ENOSYS)
946 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
958 /* fill up our buffer. */
959 while (*rbuflen > 0) {
960 cc = read_file(ofork, eid, offset, nlmask, nlchar, rbuf,rbuflen, xlate);
966 if (obj->options.flags & OPTION_DEBUG) {
967 printf( "(read) reply: %d, %d\n", *rbuflen, dsi->clientID);
968 bprint(rbuf, *rbuflen);
971 /* dsi_read() also returns buffer size of next allocation */
972 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
981 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
983 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
984 obj->exit(EXITERR_CLNT);
988 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
996 /* ---------------------- */
997 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
999 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1002 /* ---------------------- */
1003 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1005 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1008 /* ---------------------- */
1009 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1017 memcpy(&vid, ibuf, sizeof(vid));
1018 if (NULL == ( vol = getvolbyvid( vid )) ) {
1019 return( AFPERR_PARAM );
1026 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1028 struct ofork *ofork;
1033 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1035 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1036 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
1037 return( AFPERR_PARAM );
1040 if ( flushfork( ofork ) < 0 ) {
1041 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
1049 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
1050 fsync(2) on OSX is implemented differently than on other platforms.
1051 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
1053 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1055 struct ofork *ofork;
1061 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
1062 ibuf += sizeof( ofrefnum );
1064 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1065 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
1066 return( AFPERR_PARAM );
1069 if ( flushfork( ofork ) < 0 ) {
1070 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1077 /* this is very similar to closefork */
1078 int flushfork(struct ofork *ofork)
1082 int err = 0, doflush = 0;
1084 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1085 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1086 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1087 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1091 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1092 (ofork->of_flags & AFPFORK_RSRC)) {
1094 /* read in the rfork length */
1095 ad_refresh(ofork->of_ad);
1097 /* set the date if we're dirty */
1098 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1099 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1100 ofork->of_flags &= ~AFPFORK_DIRTY;
1104 /* flush the header */
1105 if (doflush && ad_flush(ofork->of_ad) < 0)
1108 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1112 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1113 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1119 int afp_closefork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1121 struct ofork *ofork;
1126 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1128 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1129 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1130 return( AFPERR_PARAM );
1132 if ( of_closefork( ofork ) < 0 ) {
1133 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1134 return( AFPERR_PARAM );
1141 static ssize_t write_file(struct ofork *ofork, int eid,
1142 off_t offset, char *rbuf,
1143 size_t rbuflen, const int xlate)
1149 * If this file is of type TEXT, swap \015 to \012.
1152 for ( p = rbuf, q = p + rbuflen; p < q; p++ ) {
1153 if ( *p == '\015' ) {
1155 } else if ( *p == '\012' ) {
1161 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1162 rbuf, rbuflen)) < 0 ) {
1167 return( AFPERR_DFULL );
1169 return AFPERR_ACCESS;
1171 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1172 return( AFPERR_PARAM );
1180 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1181 * the client may have sent us a bunch of data that's not reflected
1182 * in reqcount et al. */
1183 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1185 struct ofork *ofork;
1186 off_t offset, saveoff, reqcount;
1187 int endflag, eid, xlate = 0, err = AFP_OK;
1191 /* figure out parameters */
1193 endflag = ENDBIT(*ibuf);
1195 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1196 ibuf += sizeof( ofrefnum );
1198 offset = get_off_t(&ibuf, is64);
1199 reqcount = get_off_t(&ibuf, is64);
1201 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1202 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1207 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1208 err = AFPERR_ACCESS;
1213 writtenfork = ofork;
1216 if ( ofork->of_flags & AFPFORK_DATA) {
1218 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
1219 } else if (ofork->of_flags & AFPFORK_RSRC) {
1222 err = AFPERR_ACCESS; /* should never happen */
1227 offset += ad_size(ofork->of_ad, eid);
1229 /* handle bogus parameters */
1230 if (reqcount < 0 || offset < 0) {
1235 /* offset can overflow on 64-bit capable filesystems.
1236 * report disk full if that's going to happen. */
1237 if (sum_neg(is64, offset, reqcount)) {
1242 if (!reqcount) { /* handle request counts of 0 */
1244 *rbuflen = set_off_t (offset, rbuf, is64);
1249 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff,
1250 reqcount, ofork->of_refnum) < 0) {
1255 /* this is yucky, but dsi can stream i/o and asp can't */
1256 switch (obj->proto) {
1259 if (asp_wrtcont(obj->handle, rbuf, rbuflen) < 0) {
1261 LOG(log_error, logtype_afpd, "afp_write: asp_wrtcont: %s", strerror(errno) );
1262 return( AFPERR_PARAM );
1266 if (obj->options.flags & OPTION_DEBUG) {
1267 printf("(write) len: %d\n", *rbuflen);
1268 bprint(rbuf, *rbuflen);
1271 if ((cc = write_file(ofork, eid, offset, rbuf, *rbuflen,
1274 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1279 #endif /* no afp/asp */
1283 DSI *dsi = obj->handle;
1285 /* find out what we have already and write it out. */
1286 cc = dsi_writeinit(dsi, rbuf, *rbuflen);
1287 if (!cc || (cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1288 dsi_writeflush(dsi);
1290 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1295 #if 0 /*def HAVE_SENDFILE_WRITE*/
1296 if (!(xlate || obj->options.flags & OPTION_DEBUG)) {
1297 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
1298 offset, dsi->datasize)) < 0) {
1306 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1307 goto afp_write_loop;
1309 dsi_writeflush(dsi);
1311 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1312 reqcount, ofork->of_refnum);
1317 goto afp_write_done;
1319 #endif /* 0, was HAVE_SENDFILE_WRITE */
1321 /* loop until everything gets written. currently
1322 * dsi_write handles the end case by itself. */
1323 while ((cc = dsi_write(dsi, rbuf, *rbuflen))) {
1324 if ((cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1325 dsi_writeflush(dsi);
1327 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1328 reqcount, ofork->of_refnum);
1337 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1338 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1339 ofork->of_flags |= AFPFORK_DIRTY;
1341 /* we have modified any fork, remember until close_fork */
1342 ofork->of_flags |= AFPFORK_MODIFIED;
1344 /* update write count */
1345 ofork->of_vol->v_written += reqcount;
1347 *rbuflen = set_off_t (offset, rbuf, is64);
1351 if (obj->proto == AFPPROTO_DSI) {
1352 dsi_writeinit(obj->handle, rbuf, *rbuflen);
1353 dsi_writeflush(obj->handle);
1355 if (err != AFP_OK) {
1361 /* ---------------------------- */
1362 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1364 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1367 /* ----------------------------
1368 * FIXME need to deal with SIGXFSZ signal
1370 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1372 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1375 /* ---------------------------- */
1376 int afp_getforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1378 struct ofork *ofork;
1380 u_int16_t ofrefnum, bitmap;
1383 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1384 ibuf += sizeof( ofrefnum );
1385 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1386 bitmap = ntohs( bitmap );
1387 ibuf += sizeof( bitmap );
1390 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1391 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1392 return( AFPERR_PARAM );
1395 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) { /* META */
1396 if ( ad_refresh( ofork->of_ad ) < 0 ) {
1397 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1398 return( AFPERR_PARAM );
1402 if (AFP_OK != ( ret = getforkparams( ofork, bitmap,
1403 rbuf + sizeof( u_short ), &buflen ))) {
1407 *rbuflen = buflen + sizeof( u_short );
1408 bitmap = htons( bitmap );
1409 memcpy(rbuf, &bitmap, sizeof( bitmap ));