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 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd)",
897 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount);
899 savereqcount = reqcount;
901 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, saveoff, savereqcount,ofork->of_refnum) < 0) {
906 *rbuflen = MIN(reqcount, *rbuflen);
907 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): reading %jd bytes from file",
908 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
909 err = read_file(ofork, eid, offset, nlmask, nlchar, rbuf, rbuflen, xlate);
912 LOG(log_debug, logtype_afpd, "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): got %jd bytes from file",
913 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
915 /* dsi can stream requests. we can only do this if we're not checking
916 * for an end-of-line character. oh well. */
917 if ((obj->proto == AFPPROTO_DSI) && (*rbuflen < reqcount) && !nlmask) {
918 DSI *dsi = obj->handle;
921 /* reqcount isn't always truthful. we need to deal with that. */
922 size = ad_size(ofork->of_ad, eid);
924 /* subtract off the offset */
926 if (reqcount > size) {
933 /* dsi_readinit() returns size of next read buffer. by this point,
934 * we know that we're sending some data. if we fail, something
935 * horrible happened. */
936 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
939 /* due to the nature of afp packets, we have to exit if we get
940 an error. we can't do this with translation on. */
942 if (!(xlate || Debug(obj) )) {
945 fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
947 if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) {
948 if (errno == EINVAL || errno == ENOSYS)
951 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
963 /* fill up our buffer. */
964 while (*rbuflen > 0) {
965 cc = read_file(ofork, eid, offset, nlmask, nlchar, rbuf,rbuflen, xlate);
970 /* dsi_read() also returns buffer size of next allocation */
971 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
980 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
982 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
983 obj->exit(EXITERR_CLNT);
987 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
995 /* ---------------------- */
996 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
998 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1001 /* ---------------------- */
1002 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1004 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1007 /* ---------------------- */
1008 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1016 memcpy(&vid, ibuf, sizeof(vid));
1017 if (NULL == ( vol = getvolbyvid( vid )) ) {
1018 return( AFPERR_PARAM );
1025 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1027 struct ofork *ofork;
1032 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1034 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1035 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
1036 return( AFPERR_PARAM );
1039 if ( flushfork( ofork ) < 0 ) {
1040 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
1048 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
1049 fsync(2) on OSX is implemented differently than on other platforms.
1050 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
1052 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1054 struct ofork *ofork;
1060 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
1061 ibuf += sizeof( ofrefnum );
1063 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1064 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
1065 return( AFPERR_PARAM );
1068 if ( flushfork( ofork ) < 0 ) {
1069 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1076 /* this is very similar to closefork */
1077 int flushfork(struct ofork *ofork)
1081 int err = 0, doflush = 0;
1083 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1084 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1085 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1086 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1090 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1091 (ofork->of_flags & AFPFORK_RSRC)) {
1093 /* read in the rfork length */
1094 ad_refresh(ofork->of_ad);
1096 /* set the date if we're dirty */
1097 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1098 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1099 ofork->of_flags &= ~AFPFORK_DIRTY;
1103 /* flush the header */
1104 if (doflush && ad_flush(ofork->of_ad) < 0)
1107 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1111 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1112 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1118 int afp_closefork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1120 struct ofork *ofork;
1125 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1127 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1128 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1129 return( AFPERR_PARAM );
1131 if ( of_closefork( ofork ) < 0 ) {
1132 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1133 return( AFPERR_PARAM );
1140 static ssize_t write_file(struct ofork *ofork, int eid,
1141 off_t offset, char *rbuf,
1142 size_t rbuflen, const int xlate)
1148 * If this file is of type TEXT, swap \015 to \012.
1151 for ( p = rbuf, q = p + rbuflen; p < q; p++ ) {
1152 if ( *p == '\015' ) {
1154 } else if ( *p == '\012' ) {
1160 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1161 rbuf, rbuflen)) < 0 ) {
1166 return( AFPERR_DFULL );
1168 return AFPERR_ACCESS;
1170 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1171 return( AFPERR_PARAM );
1179 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1180 * the client may have sent us a bunch of data that's not reflected
1181 * in reqcount et al. */
1182 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1184 struct ofork *ofork;
1185 off_t offset, saveoff, reqcount, oldsize, newsize;
1186 int endflag, eid, xlate = 0, err = AFP_OK;
1190 /* figure out parameters */
1192 endflag = ENDBIT(*ibuf);
1194 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1195 ibuf += sizeof( ofrefnum );
1197 offset = get_off_t(&ibuf, is64);
1198 reqcount = get_off_t(&ibuf, is64);
1200 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1201 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1206 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1207 err = AFPERR_ACCESS;
1212 writtenfork = ofork;
1215 if ( ofork->of_flags & AFPFORK_DATA) {
1217 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
1218 } else if (ofork->of_flags & AFPFORK_RSRC) {
1221 err = AFPERR_ACCESS; /* should never happen */
1225 oldsize = ad_size(ofork->of_ad, eid);
1229 /* handle bogus parameters */
1230 if (reqcount < 0 || offset < 0) {
1235 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
1237 /* offset can overflow on 64-bit capable filesystems.
1238 * report disk full if that's going to happen. */
1239 if (sum_neg(is64, offset, reqcount)) {
1244 if (!reqcount) { /* handle request counts of 0 */
1246 *rbuflen = set_off_t (offset, rbuf, is64);
1251 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff,
1252 reqcount, ofork->of_refnum) < 0) {
1257 /* this is yucky, but dsi can stream i/o and asp can't */
1258 switch (obj->proto) {
1261 if (asp_wrtcont(obj->handle, rbuf, rbuflen) < 0) {
1263 LOG(log_error, logtype_afpd, "afp_write: asp_wrtcont: %s", strerror(errno) );
1264 return( AFPERR_PARAM );
1268 if (obj->options.flags & OPTION_DEBUG) {
1269 printf("(write) len: %d\n", *rbuflen);
1270 bprint(rbuf, *rbuflen);
1273 if ((cc = write_file(ofork, eid, offset, rbuf, *rbuflen,
1276 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1281 #endif /* no afp/asp */
1285 DSI *dsi = obj->handle;
1287 /* find out what we have already and write it out. */
1288 cc = dsi_writeinit(dsi, rbuf, *rbuflen);
1289 if (!cc || (cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1290 dsi_writeflush(dsi);
1292 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1297 #if 0 /*def HAVE_SENDFILE_WRITE*/
1298 if (!(xlate || obj->options.flags & OPTION_DEBUG)) {
1299 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
1300 offset, dsi->datasize)) < 0) {
1308 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1309 goto afp_write_loop;
1311 dsi_writeflush(dsi);
1313 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1314 reqcount, ofork->of_refnum);
1319 goto afp_write_done;
1321 #endif /* 0, was HAVE_SENDFILE_WRITE */
1323 /* loop until everything gets written. currently
1324 * dsi_write handles the end case by itself. */
1325 while ((cc = dsi_write(dsi, rbuf, *rbuflen))) {
1326 if ((cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1327 dsi_writeflush(dsi);
1329 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1330 reqcount, ofork->of_refnum);
1339 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1340 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1341 ofork->of_flags |= AFPFORK_DIRTY;
1343 /* we have modified any fork, remember until close_fork */
1344 ofork->of_flags |= AFPFORK_MODIFIED;
1346 /* update write count */
1347 ofork->of_vol->v_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1349 *rbuflen = set_off_t (offset, rbuf, is64);
1353 if (obj->proto == AFPPROTO_DSI) {
1354 dsi_writeinit(obj->handle, rbuf, *rbuflen);
1355 dsi_writeflush(obj->handle);
1357 if (err != AFP_OK) {
1363 /* ---------------------------- */
1364 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1366 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1369 /* ----------------------------
1370 * FIXME need to deal with SIGXFSZ signal
1372 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1374 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1377 /* ---------------------------- */
1378 int afp_getforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1380 struct ofork *ofork;
1382 u_int16_t ofrefnum, bitmap;
1385 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1386 ibuf += sizeof( ofrefnum );
1387 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1388 bitmap = ntohs( bitmap );
1389 ibuf += sizeof( bitmap );
1392 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1393 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1394 return( AFPERR_PARAM );
1397 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) { /* META */
1398 if ( ad_refresh( ofork->of_ad ) < 0 ) {
1399 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1400 return( AFPERR_PARAM );
1404 if (AFP_OK != ( ret = getforkparams( ofork, bitmap,
1405 rbuf + sizeof( u_short ), &buflen ))) {
1409 *rbuflen = buflen + sizeof( u_short );
1410 bitmap = htons( bitmap );
1411 memcpy(rbuf, &bitmap, sizeof( bitmap ));