/*
- * $Id: ad_flush.c,v 1.10 2009-07-21 13:41:16 didg Exp $
- *
* Copyright (c) 1990,1991 Regents of The University of Michigan.
+ * Copyright (c) 2010 Frank Lahm
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and
* permission. This software is supplied as is without expressed or
* implied warranties of any kind.
*
- * Research Systems Unix Group
- * The University of Michigan
- * c/o Mike Clark
- * 535 W. William Street
- * Ann Arbor, Michigan
- * +1-313-763-0525
- * netatalk@itd.umich.edu
+ * Research Systems Unix Group
+ * The University of Michigan
+ * c/o Mike Clark
+ * 535 W. William Street
+ * Ann Arbor, Michigan
+ * +1-313-763-0525
+ * netatalk@itd.umich.edu
*/
#ifdef HAVE_CONFIG_H
#endif /* HAVE_CONFIG_H */
#include <string.h>
-#include <atalk/adouble.h>
-
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
+#include <arpa/inet.h>
-#include "ad_private.h"
-#if AD_VERSION == AD_VERSION1
-
-#define EID_DISK(a) (a)
-
-#else
-
-static const u_int32_t set_eid[] = {
-0,1,2,3,4,5,6,7,8,
-9,10,11,12,13,14,15,
-AD_DEV, AD_INO, AD_SYN, AD_ID
+#include <atalk/adouble.h>
+#include <atalk/ea.h>
+#include <atalk/logger.h>
+#include <atalk/bstrlib.h>
+#include <atalk/bstradd.h>
+#include <atalk/errchk.h>
+#include <atalk/util.h>
+
+#include "ad_lock.h"
+
+static const uint32_t set_eid[] = {
+ 0,1,2,3,4,5,6,7,8,
+ 9,10,11,12,13,14,15,
+ AD_DEV, AD_INO, AD_SYN, AD_ID
};
#define EID_DISK(a) (set_eid[a])
-#endif
-/* rebuild the adouble header
- * XXX should be in a separate file ?
-*/
-int ad_rebuild_adouble_header(struct adouble *ad)
+/*
+ * Prepare ad->ad_data buffer from struct adouble for writing on disk
+ */
+int ad_rebuild_adouble_header_v2(struct adouble *ad)
{
- u_int32_t eid;
- u_int32_t temp;
-
- u_int16_t nent;
- char *buf, *nentp;
-
- /*
- * Rebuild any header information that might have changed.
- */
+ uint32_t eid;
+ uint32_t temp;
+ uint16_t nent;
+ char *buf, *nentp;
+
+ LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_v2");
+
buf = ad->ad_data;
temp = htonl( ad->ad_magic );
memcpy(buf, &temp, sizeof( temp ));
buf += sizeof( temp );
-
+
temp = htonl( ad->ad_version );
memcpy(buf, &temp, sizeof( temp ));
buf += sizeof( temp );
- memcpy(buf, ad->ad_filler, sizeof( ad->ad_filler ));
buf += sizeof( ad->ad_filler );
-
+
nentp = buf;
buf += sizeof( nent );
for ( eid = 0, nent = 0; eid < ADEID_MAX; eid++ ) {
- if ( ad->ad_eid[ eid ].ade_off == 0 ) {
- continue;
- }
- temp = htonl( EID_DISK(eid) );
- memcpy(buf, &temp, sizeof( temp ));
- buf += sizeof( temp );
-
- temp = htonl( ad->ad_eid[ eid ].ade_off );
- memcpy(buf, &temp, sizeof( temp ));
- buf += sizeof( temp );
-
- temp = htonl( ad->ad_eid[ eid ].ade_len );
- memcpy(buf, &temp, sizeof( temp ));
- buf += sizeof( temp );
- nent++;
+ if (ad->ad_eid[ eid ].ade_off == 0)
+ continue;
+ temp = htonl( EID_DISK(eid) );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_eid[ eid ].ade_off );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_eid[ eid ].ade_len );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+ nent++;
}
nent = htons( nent );
memcpy(nentp, &nent, sizeof( nent ));
+
return ad_getentryoff(ad, ADEID_RFORK);
}
-/* -------------------
+int ad_rebuild_adouble_header_ea(struct adouble *ad)
+{
+ uint32_t eid;
+ uint32_t temp;
+ uint16_t nent;
+ char *buf, *nentp;
+
+ LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_ea");
+
+ buf = ad->ad_data;
+
+ temp = htonl( ad->ad_magic );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_version );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ buf += sizeof( ad->ad_filler );
+
+ nentp = buf;
+ buf += sizeof( nent );
+ for ( eid = 0, nent = 0; eid < ADEID_MAX; eid++ ) {
+ if ((ad->ad_eid[ eid ].ade_off == 0) || (eid == ADEID_RFORK))
+ continue;
+ temp = htonl( EID_DISK(eid) );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_eid[ eid ].ade_off );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_eid[ eid ].ade_len );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+ nent++;
+ }
+ nent = htons( nent );
+ memcpy(nentp, &nent, sizeof( nent ));
+
+ return AD_DATASZ_EA;
+}
+
+/*!
+ * Prepare adbuf buffer from struct adouble for writing on disk
+ */
+int ad_rebuild_adouble_header_osx(struct adouble *ad, char *adbuf)
+{
+ uint32_t temp;
+ uint16_t nent;
+ char *buf;
+
+ LOG(log_debug, logtype_ad, "ad_rebuild_adouble_header_osx");
+
+ buf = &adbuf[0];
+
+ temp = htonl( ad->ad_magic );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_version );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ memcpy(buf, AD_FILLER_NETATALK, strlen(AD_FILLER_NETATALK));
+ buf += sizeof( ad->ad_filler );
+
+ nent = htons(ADEID_NUM_OSX);
+ memcpy(buf, &nent, sizeof( nent ));
+ buf += sizeof( nent );
+
+ /* FinderInfo */
+ temp = htonl(EID_DISK(ADEID_FINDERI));
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl(ADEDOFF_FINDERI_OSX);
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl(ADEDLEN_FINDERI);
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ memcpy(adbuf + ADEDOFF_FINDERI_OSX, ad_entry(ad, ADEID_FINDERI), ADEDLEN_FINDERI);
+
+ /* rfork */
+ temp = htonl( EID_DISK(ADEID_RFORK) );
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl(ADEDOFF_RFORK_OSX);
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ temp = htonl( ad->ad_rlen);
+ memcpy(buf, &temp, sizeof( temp ));
+ buf += sizeof( temp );
+
+ return AD_DATASZ_OSX;
+}
+
+/* -------------------
* XXX copy only header with same size or comment
* doesn't work well for adouble with different version.
- *
-*/
+ *
+ */
int ad_copy_header(struct adouble *add, struct adouble *ads)
{
- u_int32_t eid;
- u_int32_t len;
+ uint32_t eid;
+ uint32_t len;
for ( eid = 0; eid < ADEID_MAX; eid++ ) {
- if ( ads->ad_eid[ eid ].ade_off == 0 ) {
- continue;
- }
-
- if ( add->ad_eid[ eid ].ade_off == 0 ) {
- continue;
- }
-
- len = ads->ad_eid[ eid ].ade_len;
- if (!len) {
- continue;
- }
-
- if (eid != ADEID_COMMENT && add->ad_eid[ eid ].ade_len != len ) {
- continue;
- }
-
- ad_setentrylen( add, eid, len );
- memcpy( ad_entry( add, eid ), ad_entry( ads, eid ), len );
+ if ( ads->ad_eid[ eid ].ade_off == 0 || add->ad_eid[ eid ].ade_off == 0 )
+ continue;
+
+ len = ads->ad_eid[ eid ].ade_len;
+ if (len == 0)
+ continue;
+
+ switch (eid) {
+ case ADEID_COMMENT:
+ case ADEID_RFORK:
+ continue;
+ default:
+ ad_setentrylen( add, eid, len );
+ memcpy( ad_entry( add, eid ), ad_entry( ads, eid ), len );
+ }
}
add->ad_rlen = ads->ad_rlen;
+
+ if (((ads->ad_vers == AD_VERSION2) && (add->ad_vers == AD_VERSION_EA))
+ || ((ads->ad_vers == AD_VERSION_EA) && (add->ad_vers == AD_VERSION2))) {
+ cnid_t id;
+ memcpy(&id, ad_entry(add, ADEID_PRIVID), sizeof(cnid_t));
+ id = htonl(id);
+ memcpy(ad_entry(add, ADEID_PRIVID), &id, sizeof(cnid_t));
+ }
return 0;
}
-/* ------------------- */
-int ad_rebuild_sfm_header(struct adouble *ad)
+static int ad_flush_hf(struct adouble *ad)
{
- u_int32_t temp;
-
- u_int16_t attr;
- char *buf;
-
- /*
- * Rebuild any header information that might have changed.
- */
- buf = ad->ad_data;
- /* FIXME */
-/* temp = htonl( ad->ad_magic ); */
- temp = ad->ad_magic;
- memcpy(buf, &temp, sizeof( temp ));
-
-/* temp = htonl( ad->ad_version ); */
- temp = ad->ad_version;
- memcpy(buf +4, &temp, sizeof( temp ));
+ EC_INIT;
+ int len;
+ int cwd = -1;
+
+ LOG(log_debug, logtype_ad, "ad_flush_hf(%s)", adflags2logstr(ad->ad_adflags));
+
+ struct ad_fd *adf;
+
+ switch (ad->ad_vers) {
+ case AD_VERSION2:
+ adf = ad->ad_mdp;
+ break;
+ case AD_VERSION_EA:
+ adf = &ad->ad_data_fork;
+ break;
+ default:
+ LOG(log_error, logtype_ad, "ad_flush: unexpected adouble version");
+ return -1;
+ }
- /* need to save attrib */
- if (!ad_getattr(ad, &attr)) {
- attr &= ~htons(ATTRBIT_DOPEN | ATTRBIT_ROPEN);
+ if ((adf->adf_flags & O_RDWR)
+ || ((ad->ad_adflags & ADFLAGS_DIR) && (ad->ad_adflags & ADFLAGS_RDWR))) {
+ if (ad_getentryoff(ad, ADEID_RFORK)) {
+ if (ad->ad_rlen > 0xffffffff)
+ ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
+ else
+ ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
+ }
+ len = ad->ad_ops->ad_rebuild_header(ad);
- memcpy(buf +48 +4, &attr, sizeof(attr));
-
+ switch (ad->ad_vers) {
+ case AD_VERSION2:
+ if (adf_pwrite(ad->ad_mdp, ad->ad_data, len, 0) != len) {
+ if (errno == 0)
+ errno = EIO;
+ return( -1 );
+ }
+ break;
+ case AD_VERSION_EA:
+ if (AD_META_OPEN(ad)) {
+ if (ad->ad_adflags & ADFLAGS_DIR) {
+ EC_NEG1_LOG( cwd = open(".", O_RDONLY) );
+ EC_NEG1_LOG( fchdir(ad_data_fileno(ad)) );
+
+ ret = sys_lsetxattr(".", AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0);
+
+ if (ret != 0) {
+ if (errno != EPERM)
+ EC_FAIL;
+
+ if (!(ad->ad_options & ADVOL_FORCE_STICKY_XATTR))
+ EC_FAIL;
+
+ /*
+ * This may be a directory with a sticky bit
+ * set, which means even though we may have
+ * write access to the directory, only the
+ * owner is allowed to write xattrs
+ */
+
+ become_root();
+ ret = sys_lsetxattr(".", AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0);
+ unbecome_root();
+
+ if (ret != 0) {
+ LOG(log_error, logtype_ad, "ad_flush_hf: %s", strerror(errno));
+ EC_FAIL;
+ }
+ }
+
+ EC_NEG1_LOG( fchdir(cwd) );
+ EC_NEG1_LOG( close(cwd) );
+ cwd = -1;
+ } else {
+ EC_ZERO_LOG( sys_fsetxattr(ad_data_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0) );
+ }
+ }
+ break;
+ default:
+ LOG(log_error, logtype_ad, "ad_flush: unexpected adouble version");
+ return -1;
+ }
}
- return AD_SFM_LEN;
-}
+EC_CLEANUP:
+ if (cwd != -1) {
+ if (fchdir(cwd) != 0) {
+ AFP_PANIC("ad_flush: cant fchdir");
+ }
+ close(cwd);
+ }
+ EC_EXIT;
+}
-int ad_flush( ad )
- struct adouble *ad;
+/* Flush resofork adouble file if any (currently adouble:ea and #ifndef HAVE_EAFD eg Linux) */
+static int ad_flush_rf(struct adouble *ad)
{
- int len;
+ ssize_t len;
+ char adbuf[AD_DATASZ_OSX];
+
+#ifdef HAVE_EAFD
+ return 0;
+#endif
+ if (ad->ad_vers != AD_VERSION_EA)
+ return 0;
- if (( ad->ad_md->adf_flags & O_RDWR )) {
- /* sync our header */
- if (ad->ad_rlen > 0xffffffff) {
- ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
+ LOG(log_debug, logtype_ad, "ad_flush_rf(%s)", adflags2logstr(ad->ad_adflags));
+
+ if ((ad->ad_rfp->adf_flags & O_RDWR)) {
+ if (ad_getentryoff(ad, ADEID_RFORK)) {
+ if (ad->ad_rlen > 0xffffffff)
+ ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
+ else
+ ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
}
- else {
- ad_setentrylen(ad, ADEID_RFORK, ad->ad_rlen);
+ len = ad_rebuild_adouble_header_osx(ad, &adbuf[0]);
+
+ if (adf_pwrite(ad->ad_rfp, adbuf, len, 0) != len) {
+ if (errno == 0)
+ errno = EIO;
+ return -1;
}
- len = ad->ad_ops->ad_rebuild_header(ad);
+ }
+ return 0;
+}
+
+int ad_flush(struct adouble *ad)
+{
+ EC_INIT;
- if (adf_pwrite(ad->ad_md, ad->ad_data, len, 0) != len) {
- if ( errno == 0 ) {
- errno = EIO;
- }
- return( -1 );
- }
+ LOG(log_debug, logtype_ad, "ad_flush(%s)", adflags2logstr(ad->ad_adflags));
+
+ if (AD_META_OPEN(ad)) {
+ EC_ZERO( ad_flush_hf(ad) );
+ }
+
+ if (AD_RSRC_OPEN(ad)) {
+ EC_ZERO( ad_flush_rf(ad) );
}
- return( 0 );
+EC_CLEANUP:
+ EC_EXIT;
}
-/* use refcounts so that we don't have to re-establish fcntl locks. */
-int ad_close( ad, adflags )
- struct adouble *ad;
- int adflags;
+static int ad_data_closefd(struct adouble *ad)
{
- int err = 0;
-
- if (( adflags & ADFLAGS_DF ) && ad_data_fileno(ad) != -1 &&
- !(--ad->ad_data_fork.adf_refcount)) {
- if ( close( ad_data_fileno(ad) ) < 0 ) {
- err = -1;
- }
- ad_data_fileno(ad) = -1;
- adf_lock_free(&ad->ad_data_fork);
+ int ret = 0;
+
+ if (ad_data_fileno(ad) == AD_SYMLINK) {
+ free(ad->ad_data_fork.adf_syml);
+ ad->ad_data_fork.adf_syml = NULL;
+ } else {
+ if (close(ad_data_fileno(ad)) < 0)
+ ret = -1;
}
+ ad_data_fileno(ad) = -1;
+ return ret;
+}
- if (!( adflags & ADFLAGS_HF )) {
+/*!
+ * Close a struct adouble freeing all resources
+ */
+int ad_close(struct adouble *ad, int adflags)
+{
+ int err = 0;
+
+ if (ad == NULL)
return err;
+
+
+ LOG(log_debug, logtype_ad,
+ "ad_close(%s): BEGIN: {d: %d, m: %d, r: %d} "
+ "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
+ adflags2logstr(adflags),
+ ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
+ ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
+ ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
+ ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
+
+ if (adflags & (ADFLAGS_SETSHRMD | ADFLAGS_CHECK_OF)) {
+ /* sharemode locks are stored in the data fork, adouble:v2 needs this extra handling */
+ adflags |= ADFLAGS_DF;
}
-
- /* meta /resource fork */
-
- if ( ad_meta_fileno(ad) != -1 && !(--ad->ad_md->adf_refcount)) {
- if ( close( ad_meta_fileno(ad) ) < 0 ) {
- err = -1;
- }
- ad_meta_fileno(ad) = -1;
- adf_lock_free(ad->ad_md);
- }
- if (ad->ad_flags != AD_VERSION1_SFM) {
- return err;
+ if ((ad->ad_vers == AD_VERSION2) && (adflags & ADFLAGS_RF))
+ adflags |= ADFLAGS_HF;
+
+ if ((adflags & ADFLAGS_DF) && (ad_data_fileno(ad) >= 0 || ad_data_fileno(ad) == AD_SYMLINK)) {
+ if (ad->ad_data_refcount)
+ if (--ad->ad_data_refcount == 0)
+ adf_lock_free(&ad->ad_data_fork);
+ if (--ad->ad_data_fork.adf_refcount == 0) {
+ if (ad_data_closefd(ad) < 0)
+ err = -1;
+ }
}
- if ((adflags & ADFLAGS_DIR)) {
- return err;
+ if ((adflags & ADFLAGS_HF) && (ad_meta_fileno(ad) != -1)) {
+ if (ad->ad_meta_refcount)
+ ad->ad_meta_refcount--;
+ if (!(--ad->ad_mdp->adf_refcount)) {
+ if (close( ad_meta_fileno(ad)) < 0)
+ err = -1;
+ ad_meta_fileno(ad) = -1;
+ }
}
- if ( ad_reso_fileno(ad) != -1 && !(--ad->ad_resource_fork.adf_refcount)) {
- if ( close( ad_reso_fileno(ad) ) < 0 ) {
- err = -1;
- }
- ad_reso_fileno(ad) = -1;
- adf_lock_free(&ad->ad_resource_fork);
+ if (adflags & ADFLAGS_RF) {
+ /* HF is automatically opened when opening an RF, close it. */
+ if ((ad->ad_vers == AD_VERSION2) && (ad_meta_fileno(ad) != -1)) {
+ if (ad->ad_meta_refcount)
+ ad->ad_meta_refcount--;
+ if (!(--ad->ad_mdp->adf_refcount)) {
+ if (close( ad_meta_fileno(ad)) < 0)
+ err = -1;
+ ad_meta_fileno(ad) = -1;
+ }
+ }
+
+ if (ad->ad_reso_refcount)
+ if (--ad->ad_reso_refcount == 0)
+ adf_lock_free(ad->ad_rfp);
+ if (ad->ad_vers == AD_VERSION_EA) {
+ if ((ad_reso_fileno(ad) != -1)
+ && !(--ad->ad_rfp->adf_refcount)) {
+ if (close(ad->ad_rfp->adf_fd) < 0)
+ err = -1;
+ ad->ad_rlen = 0;
+ ad_reso_fileno(ad) = -1;
+ }
+ }
}
-
+
+ LOG(log_debug, logtype_ad,
+ "ad_close(%s): END: %d {d: %d, m: %d, r: %d} "
+ "[dfd: %d (ref: %d), mfd: %d (ref: %d), rfd: %d (ref: %d)]",
+ adflags2logstr(adflags), err,
+ ad->ad_data_refcount, ad->ad_meta_refcount, ad->ad_reso_refcount,
+ ad_data_fileno(ad), ad->ad_data_fork.adf_refcount,
+ ad_meta_fileno(ad), ad->ad_mdp->adf_refcount,
+ ad_reso_fileno(ad), ad->ad_rfp->adf_refcount);
+
return err;
}
projects / netatalk.git / blobdiff