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a9211cfe6e
From https://www.ietf.org/rfc/rfc1740.txt BUG: https://bugzilla.samba.org/show_bug.cgi?id=14914 Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
193 lines
6.4 KiB
C
193 lines
6.4 KiB
C
/*
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* Samba AppleDouble helpers
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*
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* Copyright (C) Ralph Boehme, 2019
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ADOUBLE_H_
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#define _ADOUBLE_H_
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#include "MacExtensions.h"
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#define ADOUBLE_NAME_PREFIX "._"
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#define NETATALK_META_XATTR "org.netatalk.Metadata"
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#define NETATALK_RSRC_XATTR "org.netatalk.ResourceFork"
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#if defined(HAVE_ATTROPEN)
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#define AFPINFO_EA_NETATALK NETATALK_META_XATTR
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#define AFPRESOURCE_EA_NETATALK NETATALK_RSRC_XATTR
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#else
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#define AFPINFO_EA_NETATALK "user." NETATALK_META_XATTR
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#define AFPRESOURCE_EA_NETATALK "user." NETATALK_RSRC_XATTR
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#endif
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/*
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* There are two AppleDouble blobs we deal with:
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*
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* - ADOUBLE_META - AppleDouble blob used by Netatalk for storing
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* metadata in an xattr
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*
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* - ADOUBLE_RSRC - AppleDouble blob used by OS X and Netatalk in
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* ._ files
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*/
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typedef enum {ADOUBLE_META, ADOUBLE_RSRC} adouble_type_t;
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/* Version info */
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#define AD_VERSION2 0x00020000
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#define AD_VERSION AD_VERSION2
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/*
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* AppleDouble entry IDs.
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*/
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#define ADEID_DFORK 1
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#define ADEID_RFORK 2
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#define ADEID_NAME 3
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#define ADEID_COMMENT 4
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#define ADEID_ICONBW 5
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#define ADEID_ICONCOL 6
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#define ADEID_FILEI 7
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#define ADEID_FILEDATESI 8
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#define ADEID_FINDERI 9
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#define ADEID_MACFILEI 10
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#define ADEID_PRODOSFILEI 11
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#define ADEID_MSDOSFILEI 12
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#define ADEID_SHORTNAME 13
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#define ADEID_AFPFILEI 14
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#define ADEID_DID 15
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/* Private Netatalk entries */
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#define ADEID_PRIVDEV 16
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#define ADEID_PRIVINO 17
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#define ADEID_PRIVSYN 18
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#define ADEID_PRIVID 19
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#define ADEID_MAX (ADEID_PRIVID + 1)
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/*
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* These are the real ids for the private entries,
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* as stored in the adouble file
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*/
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#define AD_DEV 0x80444556
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#define AD_INO 0x80494E4F
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#define AD_SYN 0x8053594E
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#define AD_ID 0x8053567E
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/* AppleDouble magic */
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#define AD_APPLESINGLE_MAGIC 0x00051600
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#define AD_APPLEDOUBLE_MAGIC 0x00051607
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#define AD_MAGIC AD_APPLEDOUBLE_MAGIC
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/* Field widths */
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#define ADEDLEN_NAME 255
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#define ADEDLEN_COMMENT 200
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#define ADEDLEN_FILEI 16
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#define ADEDLEN_FINDERI 32
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#define ADEDLEN_FILEDATESI 16
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#define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */
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#define ADEDLEN_AFPFILEI 4
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#define ADEDLEN_MACFILEI 4
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#define ADEDLEN_PRODOSFILEI 8
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#define ADEDLEN_MSDOSFILEI 2
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#define ADEDLEN_ICONBW 128
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#define ADEDLEN_ICONCOL 1024
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#define ADEDLEN_DID 4
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#define ADEDLEN_PRIVDEV 8
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#define ADEDLEN_PRIVINO 8
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#define ADEDLEN_PRIVSYN 8
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#define ADEDLEN_PRIVID 4
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/*
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* Sharemode locks fcntl() offsets
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*/
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#if _FILE_OFFSET_BITS == 64 || defined(HAVE_LARGEFILE)
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#define AD_FILELOCK_BASE (UINT64_C(0x7FFFFFFFFFFFFFFF) - 9)
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#else
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#define AD_FILELOCK_BASE (UINT32_C(0x7FFFFFFF) - 9)
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#endif
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#define BYTELOCK_MAX (AD_FILELOCK_BASE - 1)
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#define AD_FILELOCK_OPEN_WR (AD_FILELOCK_BASE + 0)
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#define AD_FILELOCK_OPEN_RD (AD_FILELOCK_BASE + 1)
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#define AD_FILELOCK_RSRC_OPEN_WR (AD_FILELOCK_BASE + 2)
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#define AD_FILELOCK_RSRC_OPEN_RD (AD_FILELOCK_BASE + 3)
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#define AD_FILELOCK_DENY_WR (AD_FILELOCK_BASE + 4)
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#define AD_FILELOCK_DENY_RD (AD_FILELOCK_BASE + 5)
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#define AD_FILELOCK_RSRC_DENY_WR (AD_FILELOCK_BASE + 6)
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#define AD_FILELOCK_RSRC_DENY_RD (AD_FILELOCK_BASE + 7)
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#define AD_FILELOCK_OPEN_NONE (AD_FILELOCK_BASE + 8)
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#define AD_FILELOCK_RSRC_OPEN_NONE (AD_FILELOCK_BASE + 9)
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/* Time stuff we overload the bits a little */
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#define AD_DATE_CREATE 0
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#define AD_DATE_MODIFY 4
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#define AD_DATE_BACKUP 8
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#define AD_DATE_ACCESS 12
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#define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \
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AD_DATE_BACKUP | AD_DATE_ACCESS)
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#define AD_DATE_UNIX (1 << 10)
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#define AD_DATE_START 0x80000000
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#define AD_DATE_DELTA 946684800
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#define AD_DATE_FROM_UNIX(x) (htonl((x) - AD_DATE_DELTA))
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#define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA)
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#define AD_CONV_WIPE_BLANK (1<<0)
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#define AD_CONV_DELETE (1<<1)
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struct adouble;
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size_t ad_getentrylen(const struct adouble *ad, int eid);
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size_t ad_getentryoff(const struct adouble *ad, int eid);
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size_t ad_setentrylen(struct adouble *ad, int eid, size_t len);
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size_t ad_setentryoff(struct adouble *ad, int eid, size_t off);
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char *ad_get_entry(const struct adouble *ad, int eid);
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int ad_getdate(const struct adouble *ad, unsigned int dateoff, uint32_t *date);
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int ad_setdate(struct adouble *ad, unsigned int dateoff, uint32_t date);
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int ad_convert(struct vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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const char *catia_mappings,
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uint32_t flags);
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bool ad_unconvert(TALLOC_CTX *mem_ctx,
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struct vfs_handle_struct *handle,
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const char *catia_mappings,
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struct smb_filename *smb_fname,
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bool *converted);
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struct adouble *ad_init(TALLOC_CTX *ctx, adouble_type_t type);
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NTSTATUS adouble_open_from_base_fsp(const struct files_struct *dirfsp,
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struct files_struct *base_fsp,
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adouble_type_t type,
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int flags,
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mode_t mode,
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struct files_struct **_ad_fsp);
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struct adouble *ad_get(TALLOC_CTX *ctx,
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vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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adouble_type_t type);
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struct adouble *ad_fget(TALLOC_CTX *ctx, vfs_handle_struct *handle,
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files_struct *fsp, adouble_type_t type);
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int ad_fset(struct vfs_handle_struct *handle,
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struct adouble *ad,
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files_struct *fsp);
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bool is_adouble_file(const char *path);
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int adouble_path(TALLOC_CTX *ctx,
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const struct smb_filename *smb_fname_in,
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struct smb_filename **pp_smb_fname_out);
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AfpInfo *afpinfo_new(TALLOC_CTX *ctx);
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ssize_t afpinfo_pack(const AfpInfo *ai, char *buf);
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AfpInfo *afpinfo_unpack(TALLOC_CTX *ctx, const void *data);
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#endif
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