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)
63 LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_v2");
67 temp = htonl( ad->ad_magic );
68 memcpy(buf, &temp, sizeof( temp ));
69 buf += sizeof( temp );
71 temp = htonl( ad->ad_version );
72 memcpy(buf, &temp, sizeof( temp ));
73 buf += sizeof( temp );
75 buf += sizeof( ad->ad_filler );
78 buf += sizeof( nent );
79 for ( eid = 0, nent = 0; eid < ADEID_MAX; eid++ ) {
80 if (ad->ad_eid[ eid ].ade_off == 0)
82 temp = htonl( EID_DISK(eid) );
83 memcpy(buf, &temp, sizeof( temp ));
84 buf += sizeof( temp );
86 temp = htonl( ad->ad_eid[ eid ].ade_off );
87 memcpy(buf, &temp, sizeof( temp ));
88 buf += sizeof( temp );
90 temp = htonl( ad->ad_eid[ eid ].ade_len );
91 memcpy(buf, &temp, sizeof( temp ));
92 buf += sizeof( temp );
96 memcpy(nentp, &nent, sizeof( nent ));
98 return ad_getentryoff(ad, ADEID_RFORK);
101 int ad_rebuild_adouble_header_ea(struct adouble *ad)
108 LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_ea");
112 temp = htonl( ad->ad_magic );
113 memcpy(buf, &temp, sizeof( temp ));
114 buf += sizeof( temp );
116 temp = htonl( ad->ad_version );
117 memcpy(buf, &temp, sizeof( temp ));
118 buf += sizeof( temp );
120 buf += sizeof( ad->ad_filler );
123 buf += sizeof( nent );
124 for ( eid = 0, nent = 0; eid < ADEID_MAX; eid++ ) {
125 if ((ad->ad_eid[ eid ].ade_off == 0) || (eid == ADEID_RFORK))
127 temp = htonl( EID_DISK(eid) );
128 memcpy(buf, &temp, sizeof( temp ));
129 buf += sizeof( temp );
131 temp = htonl( ad->ad_eid[ eid ].ade_off );
132 memcpy(buf, &temp, sizeof( temp ));
133 buf += sizeof( temp );
135 temp = htonl( ad->ad_eid[ eid ].ade_len );
136 memcpy(buf, &temp, sizeof( temp ));
137 buf += sizeof( temp );
140 nent = htons( nent );
141 memcpy(nentp, &nent, sizeof( nent ));
147 * Prepare adbuf buffer from struct adouble for writing on disk
149 static int ad_rebuild_adouble_header_osx(struct adouble *ad, char *adbuf)
155 LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_osx");
159 temp = htonl( ad->ad_magic );
160 memcpy(buf, &temp, sizeof( temp ));
161 buf += sizeof( temp );
163 temp = htonl( ad->ad_version );
164 memcpy(buf, &temp, sizeof( temp ));
165 buf += sizeof( temp );
167 memcpy(buf, "Netatalk ", 16);
168 buf += sizeof( ad->ad_filler );
170 nent = htons(ADEID_NUM_OSX);
171 memcpy(buf, &nent, sizeof( nent ));
172 buf += sizeof( nent );
175 temp = htonl(EID_DISK(ADEID_FINDERI));
176 memcpy(buf, &temp, sizeof( temp ));
177 buf += sizeof( temp );
179 temp = htonl(ADEDOFF_FINDERI_OSX);
180 memcpy(buf, &temp, sizeof( temp ));
181 buf += sizeof( temp );
183 temp = htonl(ADEDLEN_FINDERI);
184 memcpy(buf, &temp, sizeof( temp ));
185 buf += sizeof( temp );
187 memcpy(adbuf + ADEDOFF_FINDERI_OSX, ad_entry(ad, ADEID_FINDERI), ADEDLEN_FINDERI);
190 temp = htonl( EID_DISK(ADEID_RFORK) );
191 memcpy(buf, &temp, sizeof( temp ));
192 buf += sizeof( temp );
194 temp = htonl(ADEDOFF_RFORK_OSX);
195 memcpy(buf, &temp, sizeof( temp ));
196 buf += sizeof( temp );
198 temp = htonl( ad->ad_rlen);
199 memcpy(buf, &temp, sizeof( temp ));
200 buf += sizeof( temp );
202 return AD_DATASZ_OSX;
205 /* -------------------
206 * XXX copy only header with same size or comment
207 * doesn't work well for adouble with different version.
210 int ad_copy_header(struct adouble *add, struct adouble *ads)
215 for ( eid = 0; eid < ADEID_MAX; eid++ ) {
216 if ( ads->ad_eid[ eid ].ade_off == 0 || add->ad_eid[ eid ].ade_off == 0 )
219 len = ads->ad_eid[ eid ].ade_len;
220 if (!len || len != add->ad_eid[ eid ].ade_len)
231 ad_setentrylen( add, eid, len );
232 memcpy( ad_entry( add, eid ), ad_entry( ads, eid ), len );
235 add->ad_rlen = ads->ad_rlen;
237 if (((ads->ad_vers == AD_VERSION2) && (add->ad_vers == AD_VERSION_EA))
238 || ((ads->ad_vers == AD_VERSION_EA) && (add->ad_vers == AD_VERSION2))) {
240 memcpy(&id, ad_entry(add, ADEID_PRIVID), sizeof(cnid_t));
242 memcpy(ad_entry(add, ADEID_PRIVID), &id, sizeof(cnid_t));
247 static int ad_flush_hf(struct adouble *ad)
253 LOG(log_debug, logtype_ad, "ad_flush_hf(%s)", adflags2logstr(ad->ad_adflags));
257 switch (ad->ad_vers) {
262 adf = &ad->ad_data_fork;
265 LOG(log_error, logtype_ad, "ad_flush: unexpected adouble version");
269 if ((adf->adf_flags & O_RDWR)
270 || ((ad->ad_adflags & ADFLAGS_DIR) && (ad->ad_adflags & ADFLAGS_RDWR))) {
271 if (ad_getentryoff(ad, ADEID_RFORK)) {
272 if (ad->ad_rlen > 0xffffffff)
273 ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
275 ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
277 len = ad->ad_ops->ad_rebuild_header(ad);
279 switch (ad->ad_vers) {
281 if (adf_pwrite(ad->ad_mdp, ad->ad_data, len, 0) != len) {
288 if (AD_META_OPEN(ad)) {
289 if (ad->ad_adflags & ADFLAGS_DIR) {
290 EC_NEG1_LOG( cwd = open(".", O_RDONLY) );
291 EC_NEG1_LOG( fchdir(ad_data_fileno(ad)) );
292 EC_ZERO_LOGSTR( sys_lsetxattr(".", AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0),
293 "sys_lsetxattr(\"%s\"): %s", fullpathname(".") ,strerror(errno));
294 EC_NEG1_LOG( fchdir(cwd) );
295 EC_NEG1_LOG( close(cwd) );
298 EC_ZERO_LOG( sys_fsetxattr(ad_data_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0) );
303 LOG(log_error, logtype_ad, "ad_flush: unexpected adouble version");
310 if (fchdir(cwd) != 0) {
311 AFP_PANIC("ad_flush: cant fchdir");
318 /* Flush resofork adouble file if any (currently adouble:ea and #ifndef HAVE_EAFD eg Linux) */
319 static int ad_flush_rf(struct adouble *ad)
322 char adbuf[AD_DATASZ_OSX];
327 if (ad->ad_vers != AD_VERSION_EA)
330 LOG(log_debug, logtype_ad, "ad_flush_rf(%s)", adflags2logstr(ad->ad_adflags));
332 if ((ad->ad_rfp->adf_flags & O_RDWR)) {
333 if (ad_getentryoff(ad, ADEID_RFORK)) {
334 if (ad->ad_rlen > 0xffffffff)
335 ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
337 ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
339 len = ad_rebuild_adouble_header_osx(ad, &adbuf[0]);
341 if (adf_pwrite(ad->ad_rfp, adbuf, len, 0) != len) {
350 int ad_flush(struct adouble *ad)
354 LOG(log_debug, logtype_ad, "ad_flush(%s)", adflags2logstr(ad->ad_adflags));
356 if (AD_META_OPEN(ad)) {
357 EC_ZERO( ad_flush_hf(ad) );
360 if (AD_RSRC_OPEN(ad)) {
361 EC_ZERO( ad_flush_rf(ad) );
368 static int ad_data_closefd(struct adouble *ad)
372 if (ad_data_fileno(ad) == AD_SYMLINK) {
373 free(ad->ad_data_fork.adf_syml);
374 ad->ad_data_fork.adf_syml = NULL;
376 if (close(ad_data_fileno(ad)) < 0)
379 ad_data_fileno(ad) = -1;
384 * Close a struct adouble freeing all resources
386 int ad_close(struct adouble *ad, int adflags)
394 LOG(log_debug, logtype_ad,
395 "ad_close(%s): BEGIN: {d: %d, m: %d, r: %d} "
396 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
397 adflags2logstr(adflags),
398 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
399 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
400 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
401 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
403 if (adflags & (ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) {
404 /* sharemode locks are stored in the data fork, adouble:v2 needs this extra handling */
405 adflags |= ADFLAGS_DF;
408 if ((ad->ad_vers == AD_VERSION2) && (adflags & ADFLAGS_RF))
409 adflags |= ADFLAGS_HF;
411 if ((adflags & ADFLAGS_DF) && (ad_data_fileno(ad) >= 0 || ad_data_fileno(ad) == AD_SYMLINK)) {
412 if (ad->ad_data_refcount)
413 if (--ad->ad_data_refcount == 0)
414 adf_lock_free(&ad->ad_data_fork);
415 if (--ad->ad_data_fork.adf_refcount == 0) {
416 if (ad_data_closefd(ad) < 0)
421 if ((adflags & ADFLAGS_HF) && (ad_meta_fileno(ad) != -1)) {
422 if (ad->ad_meta_refcount)
423 ad->ad_meta_refcount--;
424 if (!(--ad->ad_mdp->adf_refcount)) {
425 if (close( ad_meta_fileno(ad)) < 0)
427 ad_meta_fileno(ad) = -1;
431 if (adflags & ADFLAGS_RF) {
432 if (ad->ad_reso_refcount)
433 if (--ad->ad_reso_refcount == 0)
434 adf_lock_free(ad->ad_rfp);
435 if (ad->ad_vers == AD_VERSION_EA) {
436 if ((ad_reso_fileno(ad) != -1)
437 && !(--ad->ad_rfp->adf_refcount)) {
438 if (close(ad->ad_rfp->adf_fd) < 0)
441 ad_reso_fileno(ad) = -1;
446 LOG(log_debug, logtype_ad,
447 "ad_close(%s): END: %d {d: %d, m: %d, r: %d} "
448 "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
449 adflags2logstr(adflags), err,
450 ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
451 ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
452 ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
453 ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);