X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=netatalk.git;a=blobdiff_plain;f=libatalk%2Fadouble%2Fad_flush.c;h=f049876dca0d498a4175e5c912e2d1aaf533c7d6;hp=341df2e617837f0d8ff34e618ad2f1b745b49532;hb=3a84db87064922ad10ac10cc1d6833380e575995;hpb=c0b6c5214c32ed8dab853791679999ebd3c9a469 diff --git a/libatalk/adouble/ad_flush.c b/libatalk/adouble/ad_flush.c index 341df2e6..f049876d 100644 --- a/libatalk/adouble/ad_flush.c +++ b/libatalk/adouble/ad_flush.c @@ -1,7 +1,6 @@ /* - * $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 @@ -14,13 +13,13 @@ * 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 @@ -28,217 +27,463 @@ #endif /* HAVE_CONFIG_H */ #include -#include - #include #include #include +#include -#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 +#include +#include +#include +#include +#include +#include + +#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; }