2 * Copyright (c) 1990,1991 Regents of The University of Michigan.
3 * Copyright (c) 2010 Frank Lahm
6 * Permission to use, copy, modify, and distribute this software and
7 * its documentation for any purpose and without fee is hereby granted,
8 * provided that the above copyright notice appears in all copies and
9 * that both that copyright notice and this permission notice appear
10 * in supporting documentation, and that the name of The University
11 * of Michigan not be used in advertising or publicity pertaining to
12 * distribution of the software without specific, written prior
13 * permission. This software is supplied as is without expressed or
14 * implied warranties of any kind.
16 * Research Systems Unix Group
17 * The University of Michigan
19 * 535 W. William Street
22 * netatalk@itd.umich.edu
27 #endif /* HAVE_CONFIG_H */
33 #include <arpa/inet.h>
35 #include <atalk/adouble.h>
37 #include <atalk/logger.h>
38 #include <atalk/bstrlib.h>
39 #include <atalk/bstradd.h>
40 #include <atalk/errchk.h>
41 #include <atalk/util.h>
45 static const uint32_t set_eid[] = {
48 AD_DEV, AD_INO, AD_SYN, AD_ID
51 #define EID_DISK(a) (set_eid[a])
54 * Prepare ad->ad_data buffer from struct adouble for writing on disk
56 int ad_rebuild_adouble_header_v2(struct adouble *ad)
64 LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_v2");
68 temp = htonl( ad->ad_magic );
69 memcpy(buf, &temp, sizeof( temp ));
70 buf += sizeof( temp );
72 temp = htonl( ad->ad_version );
73 memcpy(buf, &temp, sizeof( temp ));
74 buf += sizeof( temp );
76 buf += sizeof( ad->ad_filler );
79 buf += sizeof( nent );
80 for ( eid = 0, nent = 0; eid < ADEID_MAX; eid++ ) {
81 if (ad->ad_eid[ eid ].ade_off == 0)
83 temp = htonl( EID_DISK(eid) );
84 memcpy(buf, &temp, sizeof( temp ));
85 buf += sizeof( temp );
87 temp = htonl( ad->ad_eid[ eid ].ade_off );
88 memcpy(buf, &temp, sizeof( temp ));
89 buf += sizeof( temp );
91 temp = htonl( ad->ad_eid[ eid ].ade_len );
92 memcpy(buf, &temp, sizeof( temp ));
93 buf += sizeof( temp );
97 memcpy(nentp, &nent, sizeof( nent ));
99 return ad_getentryoff(ad, ADEID_RFORK);
102 int ad_rebuild_adouble_header_ea(struct adouble *ad)
110 LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_ea");
114 temp = htonl( ad->ad_magic );
115 memcpy(buf, &temp, sizeof( temp ));
116 buf += sizeof( temp );
118 temp = htonl( ad->ad_version );
119 memcpy(buf, &temp, sizeof( temp ));
120 buf += sizeof( temp );
122 buf += sizeof( ad->ad_filler );
125 buf += sizeof( nent );
126 for ( eid = 0, nent = 0; eid < ADEID_MAX; eid++ ) {
127 if ((ad->ad_eid[ eid ].ade_off == 0) || (eid == ADEID_RFORK))
129 temp = htonl( EID_DISK(eid) );
130 memcpy(buf, &temp, sizeof( temp ));
131 buf += sizeof( temp );
133 temp = htonl( ad->ad_eid[ eid ].ade_off );
134 memcpy(buf, &temp, sizeof( temp ));
135 buf += sizeof( temp );
137 temp = htonl( ad->ad_eid[ eid ].ade_len );
138 memcpy(buf, &temp, sizeof( temp ));
139 buf += sizeof( temp );
142 nent = htons( nent );
143 memcpy(nentp, &nent, sizeof( nent ));
149 * Prepare adbuf buffer from struct adouble for writing on disk
151 static int ad_rebuild_adouble_header_osx(struct adouble *ad, char *adbuf)
158 LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_osx");
162 temp = htonl( ad->ad_magic );
163 memcpy(buf, &temp, sizeof( temp ));
164 buf += sizeof( temp );
166 temp = htonl( ad->ad_version );
167 memcpy(buf, &temp, sizeof( temp ));
168 buf += sizeof( temp );
170 memcpy(buf, "Netatalk ", 16);
171 buf += sizeof( ad->ad_filler );
173 nent = htons(ADEID_NUM_OSX);
174 memcpy(buf, &nent, sizeof( nent ));
175 buf += sizeof( nent );
178 temp = htonl(EID_DISK(ADEID_FINDERI));
179 memcpy(buf, &temp, sizeof( temp ));
180 buf += sizeof( temp );
182 temp = htonl(ADEDOFF_FINDERI_OSX);
183 memcpy(buf, &temp, sizeof( temp ));
184 buf += sizeof( temp );
186 temp = htonl(ADEDLEN_FINDERI);
187 memcpy(buf, &temp, sizeof( temp ));
188 buf += sizeof( temp );
190 memcpy(adbuf + ADEDOFF_FINDERI_OSX, ad_entry(ad, ADEID_FINDERI), ADEDLEN_FINDERI);
193 temp = htonl( EID_DISK(ADEID_RFORK) );
194 memcpy(buf, &temp, sizeof( temp ));
195 buf += sizeof( temp );
197 temp = htonl(ADEDOFF_RFORK_OSX);
198 memcpy(buf, &temp, sizeof( temp ));
199 buf += sizeof( temp );
201 temp = htonl( ad->ad_rlen);
202 memcpy(buf, &temp, sizeof( temp ));
203 buf += sizeof( temp );
205 return AD_DATASZ_OSX;
208 /* -------------------
209 * XXX copy only header with same size or comment
210 * doesn't work well for adouble with different version.
213 int ad_copy_header(struct adouble *add, struct adouble *ads)
218 for ( eid = 0; eid < ADEID_MAX; eid++ ) {
219 if ( ads->ad_eid[ eid ].ade_off == 0 || add->ad_eid[ eid ].ade_off == 0 )
222 len = ads->ad_eid[ eid ].ade_len;
223 if (!len || len != add->ad_eid[ eid ].ade_len)
234 ad_setentrylen( add, eid, len );
235 memcpy( ad_entry( add, eid ), ad_entry( ads, eid ), len );
238 add->ad_rlen = ads->ad_rlen;
240 if (((ads->ad_vers == AD_VERSION2) && (add->ad_vers == AD_VERSION_EA))
241 || ((ads->ad_vers == AD_VERSION_EA) && (add->ad_vers == AD_VERSION2))) {
243 memcpy(&id, ad_entry(add, ADEID_PRIVID), sizeof(cnid_t));
245 memcpy(ad_entry(add, ADEID_PRIVID), &id, sizeof(cnid_t));
250 static int ad_flush_hf(struct adouble *ad)
256 LOG(log_debug, logtype_ad, "ad_flush_hf(%s)", adflags2logstr(ad->ad_adflags));
260 switch (ad->ad_vers) {
265 adf = &ad->ad_data_fork;
268 LOG(log_error, logtype_ad, "ad_flush: unexpected adouble version");
272 if ((adf->adf_flags & O_RDWR)
273 || ((ad->ad_adflags & ADFLAGS_DIR) && (ad->ad_adflags & ADFLAGS_RDWR))) {
274 if (ad_getentryoff(ad, ADEID_RFORK)) {
275 if (ad->ad_rlen > 0xffffffff)
276 ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
278 ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
280 len = ad->ad_ops->ad_rebuild_header(ad);
282 switch (ad->ad_vers) {
284 if (adf_pwrite(ad->ad_mdp, ad->ad_data, len, 0) != len) {
291 if (AD_META_OPEN(ad)) {
292 if (ad->ad_adflags & ADFLAGS_DIR) {
293 EC_NEG1_LOG( cwd = open(".", O_RDONLY) );
294 EC_NEG1_LOG( fchdir(ad_data_fileno(ad)) );
295 EC_ZERO_LOGSTR( sys_lsetxattr(".", AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0),
296 "sys_lsetxattr(\"%s\"): %s", fullpathname(".") ,strerror(errno));
297 EC_NEG1_LOG( fchdir(cwd) );
298 EC_NEG1_LOG( close(cwd) );
301 EC_ZERO_LOG( sys_fsetxattr(ad_data_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0) );
306 LOG(log_error, logtype_ad, "ad_flush: unexpected adouble version");
313 if (fchdir(cwd) != 0) {
314 AFP_PANIC("ad_flush: cant fchdir");
321 /* Flush resofork adouble file if any (currently adouble:ea and #ifndef HAVE_EAFD eg Linux) */
322 static int ad_flush_rf(struct adouble *ad)
325 char adbuf[AD_DATASZ_OSX];
330 if (ad->ad_vers != AD_VERSION_EA)
333 LOG(log_debug, logtype_ad, "ad_flush_rf(%s)", adflags2logstr(ad->ad_adflags));
335 if ((ad->ad_rfp->adf_flags & O_RDWR)) {
336 if (ad_getentryoff(ad, ADEID_RFORK)) {
337 if (ad->ad_rlen > 0xffffffff)
338 ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
340 ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
342 len = ad_rebuild_adouble_header_osx(ad, &adbuf[0]);
344 if (adf_pwrite(ad->ad_rfp, adbuf, len, 0) != len) {
353 int ad_flush(struct adouble *ad)
357 LOG(log_debug, logtype_ad, "ad_flush(%s)", adflags2logstr(ad->ad_adflags));
359 if (AD_META_OPEN(ad)) {
360 EC_ZERO( ad_flush_hf(ad) );
363 if (AD_RSRC_OPEN(ad)) {
364 EC_ZERO( ad_flush_rf(ad) );
371 static int ad_data_closefd(struct adouble *ad)
375 if (ad_data_fileno(ad) == AD_SYMLINK) {
376 free(ad->ad_data_fork.adf_syml);
377 ad->ad_data_fork.adf_syml = NULL;
379 if (close(ad_data_fileno(ad)) < 0)
382 ad_data_fileno(ad) = -1;
387 * Close a struct adouble freeing all resources
389 int ad_close(struct adouble *ad, int adflags)
397 LOG(log_debug, logtype_ad,
398 "ad_close(%s): BEGIN: {d: %d, m: %d, r: %d} "
399 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
400 adflags2logstr(adflags),
401 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
402 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
403 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
404 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
406 if (adflags & (ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) {
407 /* sharemode locks are stored in the data fork, adouble:v2 needs this extra handling */
408 adflags |= ADFLAGS_DF;
411 if ((ad->ad_vers == AD_VERSION2) && (adflags & ADFLAGS_RF))
412 adflags |= ADFLAGS_HF;
414 if ((adflags & ADFLAGS_DF) && (ad_data_fileno(ad) >= 0 || ad_data_fileno(ad) == AD_SYMLINK)) {
415 if (ad->ad_data_refcount)
416 if (--ad->ad_data_refcount == 0)
417 adf_lock_free(&ad->ad_data_fork);
418 if (--ad->ad_data_fork.adf_refcount == 0) {
419 if (ad_data_closefd(ad) < 0)
424 if ((adflags & ADFLAGS_HF) && (ad_meta_fileno(ad) != -1)) {
425 if (ad->ad_meta_refcount)
426 ad->ad_meta_refcount--;
427 if (!(--ad->ad_mdp->adf_refcount)) {
428 if (close( ad_meta_fileno(ad)) < 0)
430 ad_meta_fileno(ad) = -1;
434 if (adflags & ADFLAGS_RF) {
435 if (ad->ad_reso_refcount)
436 if (--ad->ad_reso_refcount == 0)
437 adf_lock_free(ad->ad_rfp);
438 if (ad->ad_vers == AD_VERSION_EA) {
439 if ((ad_reso_fileno(ad) != -1)
440 && !(--ad->ad_rfp->adf_refcount)) {
441 if (close(ad->ad_rfp->adf_fd) < 0)
444 ad_reso_fileno(ad) = -1;
449 LOG(log_debug, logtype_ad,
450 "ad_close(%s): END: %d {d: %d, m: %d, r: %d} "
451 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
452 adflags2logstr(adflags), err,
453 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
454 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
455 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
456 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);