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/bstrlib.h>
26 #include <atalk/bstradd.h>
27 #include <atalk/globals.h>
28 #include <atalk/netatalk_conf.h>
33 #include "directory.h"
38 struct ofork *writtenfork;
41 static int getforkparams(const AFPObj *obj, struct ofork *ofork, uint16_t bitmap, char *buf, size_t *buflen)
51 /* can only get the length of the opened fork */
52 if ( ( (bitmap & ((1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN)))
53 && (ofork->of_flags & AFPFORK_RSRC))
55 ( (bitmap & ((1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN)))
56 && (ofork->of_flags & AFPFORK_DATA))) {
57 return( AFPERR_BITMAP );
60 if (! AD_META_OPEN(ofork->of_ad)) {
67 dir = dirlookup(vol, ofork->of_did);
69 if (NULL == (path.m_name = utompath(vol, of_name(ofork), dir->d_did, utf8_encoding(obj)))) {
70 return( AFPERR_MISC );
72 path.u_name = of_name(ofork);
75 if ( bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) |
76 (1<<FILPBIT_FNUM) | (1 << FILPBIT_CDATE) |
77 (1 << FILPBIT_MDATE) | (1 << FILPBIT_BDATE))) {
78 if ( ad_data_fileno( ofork->of_ad ) <= 0 ) {
79 /* 0 is for symlink */
80 if (movecwd(vol, dir) < 0)
81 return( AFPERR_NOOBJ );
82 if ( lstat( path.u_name, st ) < 0 )
83 return( AFPERR_NOOBJ );
85 if ( fstat( ad_data_fileno( ofork->of_ad ), st ) < 0 ) {
86 return( AFPERR_BITMAP );
90 return getmetadata(obj, vol, bitmap, &path, dir, buf, buflen, adp );
93 static off_t get_off_t(char **ibuf, int is64)
99 memcpy(&temp, *ibuf, sizeof( temp ));
100 ret = ntohl(temp); /* ntohl is unsigned */
101 *ibuf += sizeof(temp);
104 memcpy(&temp, *ibuf, sizeof( temp ));
105 *ibuf += sizeof(temp);
106 ret = ntohl(temp)| (ret << 32);
109 ret = (int)ret; /* sign extend */
114 static int set_off_t(off_t offset, char *rbuf, int is64)
121 temp = htonl(offset >> 32);
122 memcpy(rbuf, &temp, sizeof( temp ));
123 rbuf += sizeof(temp);
124 ret = sizeof( temp );
125 offset &= 0xffffffff;
127 temp = htonl(offset);
128 memcpy(rbuf, &temp, sizeof( temp ));
129 ret += sizeof( temp );
134 static int is_neg(int is64, off_t val)
136 if (val < 0 || (sizeof(off_t) == 8 && !is64 && (val & 0x80000000U)))
141 static int sum_neg(int is64, off_t offset, off_t reqcount)
143 if (is_neg(is64, offset +reqcount) )
148 static int fork_setmode(const AFPObj *obj, struct adouble *adp, int eid, int access, int ofrefnum)
159 if (obj->options.flags & OPTION_SHARE_RESERV) {
160 shmd.f_access = (access & OPENACC_RD ? F_RDACC : 0) | (access & OPENACC_WR ? F_WRACC : 0);
161 if (shmd.f_access == 0)
162 /* we must give an access mode, otherwise fcntl will complain */
163 shmd.f_access = F_RDACC;
164 shmd.f_deny = (access & OPENACC_DRD ? F_RDDNY : F_NODNY) | (access & OPENACC_DWR) ? F_WRDNY : 0;
165 shmd.f_id = ofrefnum;
167 int fd = (eid == ADEID_DFORK) ? ad_data_fileno(adp) : ad_reso_fileno(adp);
169 if (fd != -1 && fd != AD_SYMLINK && fcntl(fd, F_SHARE, &shmd) != 0) {
170 LOG(log_debug, logtype_afpd, "fork_setmode: fcntl: %s", strerror(errno));
177 if (! (access & (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD))) {
178 return ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_NONE, 1, ofrefnum);
181 if ((access & (OPENACC_RD | OPENACC_DRD))) {
182 if ((readset = ad_testlock(adp, eid, AD_FILELOCK_OPEN_RD)) <0)
184 if ((denyreadset = ad_testlock(adp, eid, AD_FILELOCK_DENY_RD)) <0)
187 if ((access & OPENACC_RD) && denyreadset) {
191 if ((access & OPENACC_DRD) && readset) {
195 /* boolean logic is not enough, because getforkmode is not always telling the
198 if ((access & OPENACC_RD)) {
199 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_RD, 1, ofrefnum);
203 if ((access & OPENACC_DRD)) {
204 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_DENY_RD, 1, ofrefnum);
209 /* ------------same for writing -------------- */
210 if ((access & (OPENACC_WR | OPENACC_DWR))) {
211 if ((writeset = ad_testlock(adp, eid, AD_FILELOCK_OPEN_WR)) <0)
213 if ((denywriteset = ad_testlock(adp, eid, AD_FILELOCK_DENY_WR)) <0)
216 if ((access & OPENACC_WR) && denywriteset) {
220 if ((access & OPENACC_DWR) && writeset) {
224 if ((access & OPENACC_WR)) {
225 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_WR, 1, ofrefnum);
229 if ((access & OPENACC_DWR)) {
230 ret = ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_DENY_WR, 1, ofrefnum);
239 /* ----------------------- */
240 int afp_openfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
244 struct ofork *ofork, *opened;
245 struct adouble *adsame = NULL;
247 int ret, adflags, eid;
249 uint16_t vid, bitmap, access, ofrefnum;
250 char fork, *path, *upath;
257 memcpy(&vid, ibuf, sizeof( vid ));
261 if (NULL == ( vol = getvolbyvid( vid ))) {
262 return( AFPERR_PARAM );
265 memcpy(&did, ibuf, sizeof( did ));
266 ibuf += sizeof( int );
268 if (NULL == ( dir = dirlookup( vol, did ))) {
272 memcpy(&bitmap, ibuf, sizeof( bitmap ));
273 bitmap = ntohs( bitmap );
274 ibuf += sizeof( bitmap );
275 memcpy(&access, ibuf, sizeof( access ));
276 access = ntohs( access );
277 ibuf += sizeof( access );
279 if ((vol->v_flags & AFPVOL_RO) && (access & OPENACC_WR)) {
283 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
284 return get_afp_errno(AFPERR_PARAM);
287 if (*s_path->m_name == '\0') {
289 return AFPERR_BADTYPE;
292 /* stat() data fork st is set because it's not a dir */
293 switch ( s_path->st_errno ) {
299 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
301 LOG(log_error, logtype_afpd, "afp_openfork(%s): %s", s_path->m_name, strerror(errno));
305 upath = s_path->u_name;
306 path = s_path->m_name;
309 if (!vol_unix_priv(vol)) {
310 if (check_access(obj, vol, upath, access ) < 0) {
311 return AFPERR_ACCESS;
314 if (file_access(obj, vol, s_path, access ) < 0) {
315 return AFPERR_ACCESS;
319 if ((opened = of_findname(vol, s_path))) {
320 adsame = opened->of_ad;
323 adflags = ADFLAGS_SETSHRMD;
325 if (fork == OPENFORK_DATA) {
327 adflags |= ADFLAGS_DF;
330 adflags |= ADFLAGS_RF;
331 if (!(access & OPENACC_WR))
332 adflags |= ADFLAGS_NORF;
335 if (access & OPENACC_WR) {
336 adflags |= ADFLAGS_RDWR;
337 if (fork != OPENFORK_DATA)
339 * We only try to create the resource
340 * fork if the user wants to open it for write acess.
342 adflags |= ADFLAGS_CREATE;
344 adflags |= ADFLAGS_RDONLY;
347 if ((ofork = of_alloc(vol, curdir, path, &ofrefnum, eid, adsame, st)) == NULL)
350 LOG(log_debug, logtype_afpd, "afp_openfork(\"%s\", %s, %s)",
351 fullpathname(s_path->u_name),
352 (fork == OPENFORK_DATA) ? "data" : "reso",
353 !(access & OPENACC_WR) ? "O_RDONLY" : "O_RDWR");
357 /* First ad_open(), opens data or ressource fork */
358 if (ad_open(ofork->of_ad, upath, adflags, 0666) < 0) {
371 ret = AFPERR_BADTYPE;
374 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
381 * Create metadata if we open rw, otherwise only open existing metadata
383 if (access & OPENACC_WR) {
384 adflags = ADFLAGS_HF | ADFLAGS_RDWR | ADFLAGS_CREATE;
386 adflags = ADFLAGS_HF | ADFLAGS_RDONLY;
389 if (ad_open(ofork->of_ad, upath, adflags, 0666) == 0) {
390 ofork->of_flags |= AFPFORK_META;
395 /* no metadata? We don't care! */
404 ret = AFPERR_BADTYPE;
407 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
413 if ((adflags & ADFLAGS_RF) && (ad_get_RF_flags( ofork->of_ad) & O_CREAT)) {
414 if (ad_setname(ofork->of_ad, path)) {
415 ad_flush( ofork->of_ad );
419 if ((ret = getforkparams(obj, ofork, bitmap, rbuf + 2 * sizeof(int16_t), &buflen)) != AFP_OK) {
420 ad_close( ofork->of_ad, adflags | ADFLAGS_SETSHRMD);
424 *rbuflen = buflen + 2 * sizeof( uint16_t );
425 bitmap = htons( bitmap );
426 memcpy(rbuf, &bitmap, sizeof( uint16_t ));
427 rbuf += sizeof( uint16_t );
429 /* check WriteInhibit bit if we have a ressource fork
430 * the test is done here, after some Mac trafic capture
432 if (ad_meta_fileno(ofork->of_ad) != -1) { /* META */
433 ad_getattr(ofork->of_ad, &bshort);
434 if ((bshort & htons(ATTRBIT_NOWRITE)) && (access & OPENACC_WR)) {
435 ad_close( ofork->of_ad, adflags | ADFLAGS_SETSHRMD);
438 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
439 return(AFPERR_OLOCK);
444 * synchronization locks:
447 /* don't try to lock non-existent rforks. */
448 if ((eid == ADEID_DFORK)
449 || (ad_reso_fileno(ofork->of_ad) != -1)
450 || (ofork->of_ad->ad_vers == AD_VERSION_EA)) {
451 ret = fork_setmode(obj, ofork->of_ad, eid, access, ofrefnum);
452 /* can we access the fork? */
454 ofork->of_flags |= AFPFORK_ERROR;
456 ad_close( ofork->of_ad, adflags | ADFLAGS_SETSHRMD);
459 case EAGAIN: /* return data anyway */
463 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
464 return( AFPERR_DENYCONF );
468 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_lock: %s", s_path->m_name, strerror(ret) );
469 return( AFPERR_PARAM );
472 if ((access & OPENACC_WR))
473 ofork->of_flags |= AFPFORK_ACCWR;
475 /* the file may be open read only without ressource fork */
476 if ((access & OPENACC_RD))
477 ofork->of_flags |= AFPFORK_ACCRD;
479 LOG(log_debug, logtype_afpd, "afp_openfork(\"%s\"): fork: %" PRIu16,
480 fullpathname(s_path->m_name), ofork->of_refnum);
482 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
488 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
492 int afp_setforkparams(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf _U_, size_t *rbuflen)
496 uint16_t ofrefnum, bitmap;
504 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
505 ibuf += sizeof( ofrefnum );
507 memcpy(&bitmap, ibuf, sizeof(bitmap));
508 bitmap = ntohs(bitmap);
509 ibuf += sizeof( bitmap );
512 if (NULL == ( ofork = of_find( ofrefnum )) ) {
513 LOG(log_error, logtype_afpd, "afp_setforkparams: of_find(%d) could not locate fork", ofrefnum );
514 return( AFPERR_PARAM );
517 if (ofork->of_vol->v_flags & AFPVOL_RO)
520 if ((ofork->of_flags & AFPFORK_ACCWR) == 0)
521 return AFPERR_ACCESS;
523 if ( ofork->of_flags & AFPFORK_DATA) {
525 } else if (ofork->of_flags & AFPFORK_RSRC) {
530 if ( ( (bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) ))
531 && eid == ADEID_RFORK
533 ( (bitmap & ( (1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN) ))
534 && eid == ADEID_DFORK)) {
535 return AFPERR_BITMAP;
539 if ((bitmap & ( (1<<FILPBIT_EXTDFLEN) | (1<<FILPBIT_EXTRFLEN) ))) {
540 if (obj->afp_version >= 30) {
544 return AFPERR_BITMAP;
547 if (ibuflen < 2+ sizeof(ofrefnum) + sizeof(bitmap) + is64 +4)
548 return AFPERR_PARAM ;
550 size = get_off_t(&ibuf, is64);
553 return AFPERR_PARAM; /* Some MacOS don't return an error they just don't change the size! */
556 if (bitmap == (1<<FILPBIT_DFLEN) || bitmap == (1<<FILPBIT_EXTDFLEN)) {
557 st_size = ad_size(ofork->of_ad, eid);
559 if (st_size > size &&
560 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0)
561 goto afp_setfork_err;
563 err = ad_dtruncate( ofork->of_ad, size );
565 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
567 goto afp_setfork_err;
568 } else if (bitmap == (1<<FILPBIT_RFLEN) || bitmap == (1<<FILPBIT_EXTRFLEN)) {
569 ad_refresh(NULL, ofork->of_ad );
571 st_size = ad_size(ofork->of_ad, eid);
573 if (st_size > size &&
574 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0) {
575 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;
612 LOG(log_error, logtype_afpd, "afp_setforkparams: DISK FULL");
620 /* for this to work correctly, we need to check for locks before each
621 * read and write. that's most easily handled by always doing an
622 * appropriate check before each ad_read/ad_write. other things
623 * that can change files like truncate are handled internally to those
626 #define ENDBIT(a) ((a) & 0x80)
627 #define UNLOCKBIT(a) ((a) & 0x01)
630 /* ---------------------- */
631 static int byte_lock(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
634 off_t offset, length;
642 /* figure out parameters */
644 flags = *ibuf; /* first bit = endflag, lastbit = lockflag */
646 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
647 ibuf += sizeof(ofrefnum);
649 if (NULL == ( ofork = of_find( ofrefnum )) ) {
650 LOG(log_error, logtype_afpd, "byte_lock: of_find(%d) could not locate fork", ofrefnum );
651 return( AFPERR_PARAM );
654 if ( ofork->of_flags & AFPFORK_DATA) {
656 } else if (ofork->of_flags & AFPFORK_RSRC) {
661 offset = get_off_t(&ibuf, is64);
662 length = get_off_t(&ibuf, is64);
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);
723 * Read *rbuflen bytes from fork at offset
725 * @param ofork (r) fork handle
726 * @param eid (r) data fork or ressource fork entry id
727 * @param offset (r) offset
728 * @param rbuf (r) data buffer
729 * @param rbuflen (rw) in: number of bytes to read, out: bytes read
731 * @return AFP status code
733 static int read_file(const struct ofork *ofork, int eid, off_t offset, char *rbuf, size_t *rbuflen)
737 cc = ad_read(ofork->of_ad, eid, offset, rbuf, *rbuflen);
739 LOG(log_error, logtype_afpd, "afp_read(%s): ad_read: %s", of_name(ofork), strerror(errno) );
741 return( AFPERR_PARAM );
745 if ((size_t)cc < *rbuflen)
750 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
754 off_t offset, saveoff, reqcount, savereqcount, size;
759 /* we break the AFP spec here by not supporting nlmask and nlchar anymore */
762 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
763 ibuf += sizeof( u_short );
765 if (NULL == ( ofork = of_find( ofrefnum )) ) {
766 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
771 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
776 if ( ofork->of_flags & AFPFORK_DATA) {
778 } else if (ofork->of_flags & AFPFORK_RSRC) {
780 } else { /* fork wasn't opened. this should never really happen. */
785 offset = get_off_t(&ibuf, is64);
786 reqcount = get_off_t(&ibuf, is64);
788 /* zero request count */
794 /* reqcount isn't always truthful. we need to deal with that. */
795 size = ad_size(ofork->of_ad, eid);
797 LOG(log_debug, logtype_afpd,
798 "afp_read(fork: %" PRIu16 " [%s], off: %" PRIu64 ", len: %" PRIu64 ", size: %" PRIu64 ")",
799 ofork->of_refnum, (ofork->of_flags & AFPFORK_DATA) ? "data" : "reso", offset, reqcount, size);
806 /* subtract off the offset */
807 if (reqcount + offset > size) {
808 reqcount = size - offset;
812 savereqcount = reqcount;
815 if (reqcount < 0 || offset < 0) {
820 if (obj->options.flags & OPTION_AFP_READ_LOCK) {
821 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, offset, reqcount, ofork->of_refnum) < 0) {
828 if (!(eid == ADEID_DFORK && ad_data_fileno(ofork->of_ad) == AD_SYMLINK) &&
829 !(obj->options.flags & OPTION_NOSENDFILE)) {
830 int fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
831 if (dsi_stream_read_file(dsi, fd, offset, reqcount, err) < 0) {
832 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s",
833 of_name(ofork), strerror(errno));
840 *rbuflen = MIN(reqcount, *rbuflen);
842 err = read_file(ofork, eid, offset, rbuf, rbuflen);
846 LOG(log_debug, logtype_afpd,
847 "afp_read(name: \"%s\", offset: %jd, reqcount: %jd): got %jd bytes from file",
848 of_name(ofork), (intmax_t)offset, (intmax_t)reqcount, (intmax_t)*rbuflen);
853 * dsi_readinit() returns size of next read buffer. by this point,
854 * we know that we're sending some data. if we fail, something
857 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
861 while (*rbuflen > 0) {
862 cc = read_file(ofork, eid, offset, rbuf, rbuflen);
867 /* dsi_read() also returns buffer size of next allocation */
868 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
877 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
879 if (obj->options.flags & OPTION_AFP_READ_LOCK)
880 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount, ofork->of_refnum);
881 obj->exit(EXITERR_CLNT);
884 if (obj->options.flags & OPTION_AFP_READ_LOCK)
885 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount, ofork->of_refnum);
893 /* ---------------------- */
894 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
896 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
899 /* ---------------------- */
900 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
902 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
905 /* ---------------------- */
906 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
914 memcpy(&vid, ibuf, sizeof(vid));
915 if (NULL == ( vol = getvolbyvid( vid )) ) {
916 return( AFPERR_PARAM );
923 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
930 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
932 if (NULL == ( ofork = of_find( ofrefnum )) ) {
933 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
934 return( AFPERR_PARAM );
937 LOG(log_debug, logtype_afpd, "afp_flushfork(fork: %s)",
938 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
940 if ( flushfork( ofork ) < 0 ) {
941 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
949 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
950 fsync(2) on OSX is implemented differently than on other platforms.
951 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
953 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
961 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
962 ibuf += sizeof( ofrefnum );
964 if (NULL == ( ofork = of_find( ofrefnum )) ) {
965 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
966 return( AFPERR_PARAM );
969 LOG(log_debug, logtype_afpd, "afp_syncfork(fork: %s)",
970 (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
972 if ( flushfork( ofork ) < 0 ) {
973 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
980 /* this is very similar to closefork */
981 int flushfork(struct ofork *ofork)
985 int err = 0, doflush = 0;
987 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
988 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
989 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
990 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
994 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
995 (ofork->of_flags & AFPFORK_RSRC)) {
997 /* read in the rfork length */
998 ad_refresh(NULL, ofork->of_ad);
1000 /* set the date if we're dirty */
1001 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1002 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1003 ofork->of_flags &= ~AFPFORK_DIRTY;
1007 /* flush the header */
1008 if (doflush && ad_flush(ofork->of_ad) < 0)
1011 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1015 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1016 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1022 int afp_closefork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1024 struct ofork *ofork;
1029 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1031 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1032 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1033 return( AFPERR_PARAM );
1036 LOG(log_debug, logtype_afpd, "afp_closefork(fork: %" PRIu16 " [%s])",
1037 ofork->of_refnum, (ofork->of_flags & AFPFORK_DATA) ? "data" : "rsrc");
1039 if (of_closefork(obj, ofork) < 0 ) {
1040 LOG(log_error, logtype_afpd, "afp_closefork: of_closefork: %s", strerror(errno) );
1041 return( AFPERR_PARAM );
1048 static ssize_t write_file(struct ofork *ofork, int eid,
1049 off_t offset, char *rbuf,
1054 LOG(log_debug, logtype_afpd, "write_file(off: %ju, size: %zu)",
1055 (uintmax_t)offset, rbuflen);
1057 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1058 rbuf, rbuflen)) < 0 ) {
1063 LOG(log_error, logtype_afpd, "write_file: DISK FULL");
1064 return( AFPERR_DFULL );
1066 return AFPERR_ACCESS;
1068 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1069 return( AFPERR_PARAM );
1078 * FPWrite. NOTE: on an error, we always use afp_write_err as
1079 * the client may have sent us a bunch of data that's not reflected
1080 * in reqcount et al.
1082 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1084 struct ofork *ofork;
1085 off_t offset, saveoff, reqcount, oldsize, newsize;
1086 int endflag, eid, err = AFP_OK;
1089 DSI *dsi = obj->dsi;
1090 char *rcvbuf = (char *)dsi->commands;
1091 size_t rcvbuflen = dsi->server_quantum;
1093 /* figure out parameters */
1095 endflag = ENDBIT(*ibuf);
1097 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1098 ibuf += sizeof( ofrefnum );
1100 offset = get_off_t(&ibuf, is64);
1101 reqcount = get_off_t(&ibuf, is64);
1103 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1104 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1109 LOG(log_debug, logtype_afpd, "afp_write(fork: %" PRIu16 " [%s], off: %" PRIu64 ", size: %" PRIu64 ")",
1110 ofork->of_refnum, (ofork->of_flags & AFPFORK_DATA) ? "data" : "reso", offset, reqcount);
1112 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1113 err = AFPERR_ACCESS;
1118 writtenfork = ofork;
1121 if ( ofork->of_flags & AFPFORK_DATA) {
1123 } else if (ofork->of_flags & AFPFORK_RSRC) {
1126 err = AFPERR_ACCESS; /* should never happen */
1130 oldsize = ad_size(ofork->of_ad, eid);
1134 /* handle bogus parameters */
1135 if (reqcount < 0 || offset < 0) {
1140 newsize = ((offset + reqcount) > oldsize) ? (offset + reqcount) : oldsize;
1142 /* offset can overflow on 64-bit capable filesystems.
1143 * report disk full if that's going to happen. */
1144 if (sum_neg(is64, offset, reqcount)) {
1145 LOG(log_error, logtype_afpd, "write_fork: DISK FULL");
1150 if (!reqcount) { /* handle request counts of 0 */
1152 *rbuflen = set_off_t (offset, rbuf, is64);
1157 if (obj->options.flags & OPTION_AFP_READ_LOCK) {
1158 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff, reqcount, ofork->of_refnum) < 0) {
1164 /* find out what we have already */
1165 cc = dsi_writeinit(dsi, rcvbuf, rcvbuflen);
1167 if (!cc || (cc = write_file(ofork, eid, offset, rcvbuf, cc)) < 0) {
1168 dsi_writeflush(dsi);
1170 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1171 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1177 #if 0 /*def HAVE_SENDFILE_WRITE*/
1178 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket, offset, dsi->datasize)) < 0) {
1186 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1187 goto afp_write_loop;
1189 dsi_writeflush(dsi);
1191 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1192 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1197 goto afp_write_done;
1198 #endif /* 0, was HAVE_SENDFILE_WRITE */
1200 /* loop until everything gets written. currently
1201 * dsi_write handles the end case by itself. */
1202 while ((cc = dsi_write(dsi, rcvbuf, rcvbuflen))) {
1204 if ((cc = write_file(ofork, eid, offset, rcvbuf, cc)) < 0) {
1205 dsi_writeflush(dsi);
1207 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1208 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1212 LOG(log_debug, logtype_afpd, "afp_write: wrote: %jd, offset: %jd",
1213 (intmax_t)cc, (intmax_t)offset);
1218 if (obj->options.flags & OPTION_AFP_READ_LOCK)
1219 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1220 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1221 ofork->of_flags |= AFPFORK_DIRTY;
1223 /* we have modified any fork, remember until close_fork */
1224 ofork->of_flags |= AFPFORK_MODIFIED;
1226 /* update write count */
1227 ofork->of_vol->v_appended += (newsize > oldsize) ? (newsize - oldsize) : 0;
1229 *rbuflen = set_off_t (offset, rbuf, is64);
1233 dsi_writeinit(dsi, rcvbuf, rcvbuflen);
1234 dsi_writeflush(dsi);
1236 if (err != AFP_OK) {
1242 /* ---------------------------- */
1243 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1245 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1248 /* ----------------------------
1249 * FIXME need to deal with SIGXFSZ signal
1251 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1253 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1256 /* ---------------------------- */
1257 int afp_getforkparams(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1259 struct ofork *ofork;
1261 uint16_t ofrefnum, bitmap;
1264 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1265 ibuf += sizeof( ofrefnum );
1266 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1267 bitmap = ntohs( bitmap );
1268 ibuf += sizeof( bitmap );
1271 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1272 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1273 return( AFPERR_PARAM );
1276 if (AD_META_OPEN(ofork->of_ad)) {
1277 if ( ad_refresh(NULL, ofork->of_ad ) < 0 ) {
1278 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1279 return( AFPERR_PARAM );
1283 if (AFP_OK != (ret = getforkparams(obj, ofork, bitmap, rbuf + sizeof( u_short ), &buflen ))) {
1287 *rbuflen = buflen + sizeof( u_short );
1288 bitmap = htons( bitmap );
1289 memcpy(rbuf, &bitmap, sizeof( bitmap ));