/*
- * $Id: ad_flush.c,v 1.3 2001-06-29 14:14:46 rufustfirefly 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"
+#include <config.h>
#endif /* HAVE_CONFIG_H */
+#include <string.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif /* HAVE_FCNTL_H */
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#include <sys/types.h>
-#include <sys/mman.h>
#include <errno.h>
+#include <arpa/inet.h>
-#include <netatalk/endian.h>
#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"
-#include "ad_private.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
+};
-/* rebuild the header */
-void ad_rebuild_header(struct adouble *ad)
+#define EID_DISK(a) (set_eid[a])
+
+/*
+ * 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_int16_t nent;
- char *buf, *nentp;
+ uint32_t eid;
+ uint32_t temp;
+ uint16_t nent;
+ char *buf, *nentp;
+ int len;
+
+ LOG(log_debug, logtype_default, "ad_rebuild_adouble_header_v2");
- /*
- * Rebuild any header information that might have changed.
- */
buf = ad->ad_data;
- ad->ad_magic = htonl( ad->ad_magic );
- memcpy(buf, &ad->ad_magic, sizeof( ad->ad_magic ));
- ad->ad_magic = ntohl( ad->ad_magic );
- buf += sizeof( ad->ad_magic );
-
- ad->ad_version = htonl( ad->ad_version );
- memcpy(buf, &ad->ad_version, sizeof( ad->ad_version ));
- ad->ad_version = ntohl( ad->ad_version );
- buf += sizeof( ad->ad_version );
- memcpy(buf, ad->ad_filler, sizeof( ad->ad_filler ));
+
+ 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 ) {
- continue;
- }
- eid = htonl( eid );
- memcpy(buf, &eid, sizeof( eid ));
- eid = ntohl( eid );
- buf += sizeof( eid );
- ad->ad_eid[ eid ].ade_off = htonl( ad->ad_eid[ eid ].ade_off );
- memcpy(buf, &ad->ad_eid[ eid ].ade_off,
- sizeof( ad->ad_eid[ eid ].ade_off ));
- ad->ad_eid[ eid ].ade_off = ntohl( ad->ad_eid[ eid ].ade_off );
- buf += sizeof( ad->ad_eid[ eid ].ade_off );
- ad->ad_eid[ eid ].ade_len = htonl( ad->ad_eid[ eid ].ade_len );
- memcpy(buf, &ad->ad_eid[ eid ].ade_len,
- sizeof( ad->ad_eid[ eid ].ade_len ));
- ad->ad_eid[ eid ].ade_len = ntohl( ad->ad_eid[ eid ].ade_len );
- buf += sizeof( ad->ad_eid[ eid ].ade_len );
- 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;
+ int len;
+
+ LOG(log_debug, logtype_default, "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 );
-int ad_flush( ad, adflags )
- struct adouble *ad;
- int adflags;
+ 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
+ */
+static int ad_rebuild_adouble_header_osx(struct adouble *ad, char *adbuf)
{
-#ifndef USE_MMAPPED_HEADERS
+ uint32_t temp;
+ uint16_t nent;
+ char *buf;
+ int len;
+
+ LOG(log_debug, logtype_default, "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, "Netatalk ", 16);
+ 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)
+{
+ uint32_t eid;
+ uint32_t len;
+
+ for ( eid = 0; eid < ADEID_MAX; eid++ ) {
+ 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 || len != add->ad_eid[ eid ].ade_len)
+ continue;
+
+ switch (eid) {
+ case ADEID_COMMENT:
+ case ADEID_PRIVDEV:
+ case ADEID_PRIVINO:
+ case ADEID_PRIVSYN:
+ case ADEID_PRIVID:
+ 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;
+}
+
+static int ad_flush_hf(struct adouble *ad)
+{
+ EC_INIT;
int len;
-#endif /* ! USE_MMAPPED_HEADERS */
-
- if (( adflags & ADFLAGS_HF ) && ( ad->ad_hf.adf_flags & O_RDWR )) {
- /* sync our header */
- ad_rebuild_header(ad);
-
-#ifdef USE_MMAPPED_HEADERS
- /* now sync it */
-#ifdef MS_SYNC
- msync(ad->ad_data, ad_getentryoff(ad, ADEID_RFORK),
- MS_SYNC | MS_INVALIDATE);
-#else
- msync(ad->ad_data, ad_getentryoff(ad, ADEID_RFORK));
-#endif /* MS_SYNC */
-
-#else /* USE_MMAPPED_HEADERS */
- if ( ad->ad_hf.adf_off != 0 ) {
- if ( lseek( ad->ad_hf.adf_fd, 0L, SEEK_SET ) < 0L ) {
- return( -1 );
- }
- ad->ad_hf.adf_off = 0;
- }
-
- /* now flush it out */
- len = ad_getentryoff(ad, ADEID_RFORK);
- if (write( ad->ad_hf.adf_fd, ad->ad_data, len) != len) {
- if ( errno == 0 ) {
- errno = EIO;
- }
- return( -1 );
- }
- ad->ad_hf.adf_off = len;
-#endif /* USE_MMAPPED_HEADERS */
+ int cwd = -1;
+
+ LOG(log_debug, logtype_default, "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_afpd, "ad_flush: unexpected adouble version");
+ return -1;
+ }
+
+ 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);
+
+ 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)) );
+ EC_ZERO_LOG( sys_lsetxattr(".", AD_EA_META, ad->ad_data, AD_DATASZ_EA, 0) );
+ 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_afpd, "ad_flush: unexpected adouble version");
+ return -1;
+ }
+ }
+
+EC_CLEANUP:
+ if (cwd != -1) {
+ if (fchdir(cwd) != 0) {
+ AFP_PANIC("ad_flush: cant fchdir");
+ }
+ close(cwd);
+ }
+ EC_EXIT;
+}
+
+/* Flush resofork adouble file if any (currently adouble:ea and #ifndef HAVE_EAFD eg Linux) */
+static int ad_flush_rf(struct adouble *ad)
+{
+ ssize_t len;
+ char adbuf[AD_DATASZ_OSX];
+
+#ifdef HAVE_EAFD
+ return 0;
+#endif
+ if (ad->ad_vers != AD_VERSION_EA)
+ return 0;
+
+ LOG(log_debug, logtype_default, "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);
+ }
+ 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;
+ }
}
+ return 0;
+}
+
+int ad_flush(struct adouble *ad)
+{
+ EC_INIT;
+
+ LOG(log_debug, logtype_default, "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) );
+ }
+
+EC_CLEANUP:
+ EC_EXIT;
+}
+
+static int ad_data_closefd(struct adouble *ad)
+{
+ int ret = 0;
- return( 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;
}
-/* 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): 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;
}
- if (( adflags & ADFLAGS_HF ) && ad->ad_hf.adf_fd != -1 &&
- !(--ad->ad_hf.adf_refcount)) {
-#ifdef USE_MMAPPED_HEADERS
- if (ad->ad_data != MAP_FAILED)
- munmap(ad->ad_data, ad_getentryoff(ad, ADEID_RFORK));
-#endif /* USE_MMAPPED_HEADERS */
- if ( close( ad->ad_hf.adf_fd ) < 0 ) {
- err = -1;
- }
- ad->ad_hf.adf_fd = -1;
- adf_lock_free(&ad->ad_hf);
+ 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)
+ ad->ad_data_refcount--;
+ if (--ad->ad_data_fork.adf_refcount == 0) {
+ if (ad_data_closefd(ad) < 0)
+ err = -1;
+ adf_lock_free(&ad->ad_data_fork);
+ }
+ }
+
+ 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->ad_vers == AD_VERSION2)
+ adf_lock_free(ad->ad_mdp);
+ }
}
- return( err );
+ if (adflags & ADFLAGS_RF) {
+ if (ad->ad_reso_refcount)
+ ad->ad_reso_refcount--;
+ 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;
+ adf_lock_free(ad->ad_rfp);
+ }
+ }
+ }
+
+ LOG(log_debug, logtype_default,
+ "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