/*
- * $Id: ad_flush.c,v 1.7 2005-04-28 20:49:52 bfernhomberg 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
#include <config.h>
#endif /* HAVE_CONFIG_H */
-#include <atalk/adouble.h>
-
+#include <string.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
#include <errno.h>
+#include <arpa/inet.h>
-#include "ad_private.h"
-#if AD_VERSION == AD_VERSION1
-
-#define EID_DISK(a) (a)
+#include <atalk/adouble.h>
+#include <atalk/ea.h>
+#include <atalk/logger.h>
+#include <atalk/bstrlib.h>
+#include <atalk/bstradd.h>
-#else
+#include "ad_lock.h"
-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
+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 header */
-void ad_rebuild_header(struct adouble *ad)
+/*
+ * Rebuild any header information that might have changed.
+ */
+int ad_rebuild_adouble_header(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;
+ int len;
+
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 ));
+
+ switch (ad->ad_flags) {
+ case AD_VERSION2:
+ len = ad_getentryoff(ad, ADEID_RFORK);
+ break;
+ case AD_VERSION_EA:
+ len = AD_DATASZ_EA;
+ break;
+ default:
+ LOG(log_error, logtype_afpd, "Unexpected adouble version");
+ len = 0;
+ break;
+ }
+
+ return len;
}
+/* -------------------
+ * 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)
+{
+ 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 );
+ }
+ add->ad_rlen = ads->ad_rlen;
+ return 0;
+}
-int ad_flush( ad, adflags )
- struct adouble *ad;
- int adflags;
+int ad_flush(struct adouble *ad)
{
int len;
+ struct ad_fd *adf;
+
+ switch (ad->ad_flags) {
+ case AD_VERSION2:
+ adf = ad->ad_mdp;
+ break;
+ case AD_VERSION_EA:
+ adf = &ad->ad_data_fork;
+ break;
+ default:
+ LOG(log_error, logtype_afpd, "ad_flush: unexpected adouble version");
+ return -1;
+ }
- if (( adflags & ADFLAGS_HF ) && ( ad->ad_hf.adf_flags & O_RDWR )) {
- /* sync our header */
- if (ad->ad_rlen > 0xffffffff) {
- ad_setentrylen(ad, ADEID_RFORK, 0xffffffff);
+ if ((adf->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->ad_ops->ad_rebuild_header(ad);
+
+ switch (ad->ad_flags) {
+ 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 (sys_fsetxattr(ad_data_fileno(ad), AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0) != 0) {
+ LOG(log_error, logtype_afpd, "ad_flush: sys_fsetxattr error: %s",
+ strerror(errno));
+ return -1;
+ }
+ break;
+ default:
+ LOG(log_error, logtype_afpd, "ad_flush: unexpected adouble version");
+ return -1;
}
- ad_rebuild_header(ad);
- len = ad_getentryoff(ad, ADEID_RFORK);
- /* now flush it out */
- if (adf_pwrite(&ad->ad_hf, ad->ad_data, len, 0) != len) {
- if ( errno == 0 ) {
- errno = EIO;
- }
- return( -1 );
- }
}
return( 0 );
}
-/* use refcounts so that we don't have to re-establish fcntl locks. */
-int ad_close( ad, adflags )
- struct adouble *ad;
- int adflags;
+/*!
+ * Close a struct adouble freeing all resources
+ */
+int ad_close(struct adouble *ad, int adflags)
{
- int err = 0;
-
- if (( adflags & ADFLAGS_DF ) && ad->ad_df.adf_fd != -1 &&
- !(--ad->ad_df.adf_refcount)) {
- if ( close( ad->ad_df.adf_fd ) < 0 ) {
- err = -1;
- }
- ad->ad_df.adf_fd = -1;
- adf_lock_free(&ad->ad_df);
+ int err = 0;
+
+ if (ad == NULL)
+ return err;
+
+ LOG(log_debug, logtype_default, "ad_close(%s)", adflags2logstr(adflags));
+
+ if ((adflags & ADFLAGS_DF)
+ && (ad_data_fileno(ad) >= 0 || ad_data_fileno(ad) == -2) /* -2 means symlink */
+ && --ad->ad_data_fork.adf_refcount == 0) {
+ if (ad->ad_data_fork.adf_syml != NULL) {
+ free(ad->ad_data_fork.adf_syml);
+ ad->ad_data_fork.adf_syml = 0;
+ } else {
+ if ( close( ad_data_fileno(ad) ) < 0 )
+ err = -1;
+ }
+ ad_data_fileno(ad) = -1;
+ adf_lock_free(&ad->ad_data_fork);
+ }
+
+ if ((adflags & ADFLAGS_HF)) {
+ switch (ad->ad_flags) {
+ case AD_VERSION2:
+ if ((ad_meta_fileno(ad) != -1) && !(--ad->ad_mdp->adf_refcount)) {
+ if (close( ad_meta_fileno(ad) ) < 0)
+ err = -1;
+ ad_meta_fileno(ad) = -1;
+ adf_lock_free(ad->ad_mdp);
+ }
+ break;
+
+ case AD_VERSION_EA:
+ if ((ad_data_fileno(ad) >= 0 || ad_data_fileno(ad) == -2) /* -2 means symlink */
+ && !(--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);
+ }
+ break;
+
+ default:
+ LOG(log_error, logtype_default, "ad_close: unknown AD version");
+ errno = EIO;
+ return -1;
+ }
}
- if (( adflags & ADFLAGS_HF ) && ad->ad_hf.adf_fd != -1 &&
- !(--ad->ad_hf.adf_refcount)) {
- if ( close( ad->ad_hf.adf_fd ) < 0 ) {
- err = -1;
- }
- ad->ad_hf.adf_fd = -1;
- adf_lock_free(&ad->ad_hf);
+ if ((adflags & ADFLAGS_RF)) {
+ switch (ad->ad_flags) {
+ case AD_VERSION2:
+ /* Do nothing as ADFLAGS_RF == ADFLAGS_HF */
+ break;
+
+ case AD_VERSION_EA:
+ if ((ad_data_fileno(ad) >= 0 || ad_data_fileno(ad) == -2) /* -2 means symlink */
+ && !(--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);
+ }
+ break;
+
+ default:
+ LOG(log_error, logtype_default, "ad_close: unknown AD version");
+ errno = EIO;
+ return -1;
+ }
}
- return( err );
+ return err;
}
projects / netatalk.git / blobdiff