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) {
903 *rbuflen = MIN(reqcount, *rbuflen);
904 err = read_file(ofork, eid, offset, nlmask, nlchar, rbuf, rbuflen, xlate);
908 /* dsi can stream requests. we can only do this if we're not checking
909 * for an end-of-line character. oh well. */
910 if ((obj->proto == AFPPROTO_DSI) && (*rbuflen < reqcount) && !nlmask) {
911 DSI *dsi = obj->handle;
914 /* reqcount isn't always truthful. we need to deal with that. */
915 size = ad_size(ofork->of_ad, eid);
917 /* subtract off the offset */
919 if (reqcount > size) {
926 /* dsi_readinit() returns size of next read buffer. by this point,
927 * we know that we're sending some data. if we fail, something
928 * horrible happened. */
929 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
932 /* due to the nature of afp packets, we have to exit if we get
933 an error. we can't do this with translation on. */
935 if (!(xlate || Debug(obj) )) {
938 fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
939 if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) {
940 if (errno == EINVAL || errno == ENOSYS)
943 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
955 /* fill up our buffer. */
956 while (*rbuflen > 0) {
957 cc = read_file(ofork, eid, offset, nlmask, nlchar, rbuf,rbuflen, xlate);
963 if (obj->options.flags & OPTION_DEBUG) {
964 printf( "(read) reply: %d, %d\n", *rbuflen, dsi->clientID);
965 bprint(rbuf, *rbuflen);
968 /* dsi_read() also returns buffer size of next allocation */
969 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
978 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
980 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
981 obj->exit(EXITERR_CLNT);
985 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
993 /* ---------------------- */
994 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
996 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
999 /* ---------------------- */
1000 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1002 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1005 /* ---------------------- */
1006 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1014 memcpy(&vid, ibuf, sizeof(vid));
1015 if (NULL == ( vol = getvolbyvid( vid )) ) {
1016 return( AFPERR_PARAM );
1023 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1025 struct ofork *ofork;
1030 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1032 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1033 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
1034 return( AFPERR_PARAM );
1037 if ( flushfork( ofork ) < 0 ) {
1038 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
1046 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
1047 fsync(2) on OSX is implemented differently than on other platforms.
1048 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
1050 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1052 struct ofork *ofork;
1058 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
1059 ibuf += sizeof( ofrefnum );
1061 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1062 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
1063 return( AFPERR_PARAM );
1066 if ( flushfork( ofork ) < 0 ) {
1067 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1074 /* this is very similar to closefork */
1075 int flushfork(struct ofork *ofork)
1079 int err = 0, doflush = 0;
1081 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1082 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1083 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1084 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1088 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1089 (ofork->of_flags & AFPFORK_RSRC)) {
1091 /* read in the rfork length */
1092 ad_refresh(ofork->of_ad);
1094 /* set the date if we're dirty */
1095 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1096 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1097 ofork->of_flags &= ~AFPFORK_DIRTY;
1101 /* flush the header */
1102 if (doflush && ad_flush(ofork->of_ad) < 0)
1105 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1109 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1110 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1116 int afp_closefork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1118 struct ofork *ofork;
1123 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1125 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1126 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1127 return( AFPERR_PARAM );
1129 if ( of_closefork( ofork ) < 0 ) {
1130 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1131 return( AFPERR_PARAM );
1138 static ssize_t write_file(struct ofork *ofork, int eid,
1139 off_t offset, char *rbuf,
1140 size_t rbuflen, const int xlate)
1146 * If this file is of type TEXT, swap \015 to \012.
1149 for ( p = rbuf, q = p + rbuflen; p < q; p++ ) {
1150 if ( *p == '\015' ) {
1152 } else if ( *p == '\012' ) {
1158 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1159 rbuf, rbuflen)) < 0 ) {
1164 return( AFPERR_DFULL );
1166 return AFPERR_ACCESS;
1168 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1169 return( AFPERR_PARAM );
1177 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1178 * the client may have sent us a bunch of data that's not reflected
1179 * in reqcount et al. */
1180 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1182 struct ofork *ofork;
1183 off_t offset, saveoff, reqcount, oldsize, newsize;
1184 int endflag, eid, xlate = 0, err = AFP_OK;
1188 /* figure out parameters */
1190 endflag = ENDBIT(*ibuf);
1192 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1193 ibuf += sizeof( ofrefnum );
1195 offset = get_off_t(&ibuf, is64);
1196 reqcount = get_off_t(&ibuf, is64);
1198 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1199 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1204 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1205 err = AFPERR_ACCESS;
1210 writtenfork = ofork;
1213 if ( ofork->of_flags & AFPFORK_DATA) {
1215 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
1216 } else if (ofork->of_flags & AFPFORK_RSRC) {
1219 err = AFPERR_ACCESS; /* should never happen */
1223 oldsize = ad_size(ofork->of_ad, eid);
1227 /* handle bogus parameters */
1228 if (reqcount < 0 || offset < 0) {
1233 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
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_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1346 LOG(log_error, logtype_afpd, "write_file: %jd", (intmax_t)((newsize > oldsize) ? (newsize - oldsize) : 0));
1348 *rbuflen = set_off_t (offset, rbuf, is64);
1352 if (obj->proto == AFPPROTO_DSI) {
1353 dsi_writeinit(obj->handle, rbuf, *rbuflen);
1354 dsi_writeflush(obj->handle);
1356 if (err != AFP_OK) {
1362 /* ---------------------------- */
1363 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1365 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1368 /* ----------------------------
1369 * FIXME need to deal with SIGXFSZ signal
1371 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1373 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1376 /* ---------------------------- */
1377 int afp_getforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1379 struct ofork *ofork;
1381 u_int16_t ofrefnum, bitmap;
1384 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1385 ibuf += sizeof( ofrefnum );
1386 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1387 bitmap = ntohs( bitmap );
1388 ibuf += sizeof( bitmap );
1391 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1392 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1393 return( AFPERR_PARAM );
1396 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) { /* META */
1397 if ( ad_refresh( ofork->of_ad ) < 0 ) {
1398 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1399 return( AFPERR_PARAM );
1403 if (AFP_OK != ( ret = getforkparams( ofork, bitmap,
1404 rbuf + sizeof( u_short ), &buflen ))) {
1408 *rbuflen = buflen + sizeof( u_short );
1409 bitmap = htons( bitmap );
1410 memcpy(rbuf, &bitmap, sizeof( bitmap ));