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Diffstat (limited to 'source3/lib/adouble.h')
| -rw-r--r-- | source3/lib/adouble.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/source3/lib/adouble.h b/source3/lib/adouble.h new file mode 100644 index 0000000..de44f3f --- /dev/null +++ b/source3/lib/adouble.h @@ -0,0 +1,192 @@ +/* + * Samba AppleDouble helpers + * + * Copyright (C) Ralph Boehme, 2019 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _ADOUBLE_H_ +#define _ADOUBLE_H_ + +#include "MacExtensions.h" + +#define ADOUBLE_NAME_PREFIX "._" + +#define NETATALK_META_XATTR "org.netatalk.Metadata" +#define NETATALK_RSRC_XATTR "org.netatalk.ResourceFork" + +#if defined(HAVE_ATTROPEN) +#define AFPINFO_EA_NETATALK NETATALK_META_XATTR +#define AFPRESOURCE_EA_NETATALK NETATALK_RSRC_XATTR +#else +#define AFPINFO_EA_NETATALK "user." NETATALK_META_XATTR +#define AFPRESOURCE_EA_NETATALK "user." NETATALK_RSRC_XATTR +#endif + +/* + * There are two AppleDouble blobs we deal with: + * + * - ADOUBLE_META - AppleDouble blob used by Netatalk for storing + * metadata in an xattr + * + * - ADOUBLE_RSRC - AppleDouble blob used by OS X and Netatalk in + * ._ files + */ +typedef enum {ADOUBLE_META, ADOUBLE_RSRC} adouble_type_t; + +/* Version info */ +#define AD_VERSION2 0x00020000 +#define AD_VERSION AD_VERSION2 + +/* + * AppleDouble entry IDs. + */ +#define ADEID_DFORK 1 +#define ADEID_RFORK 2 +#define ADEID_NAME 3 +#define ADEID_COMMENT 4 +#define ADEID_ICONBW 5 +#define ADEID_ICONCOL 6 +#define ADEID_FILEI 7 +#define ADEID_FILEDATESI 8 +#define ADEID_FINDERI 9 +#define ADEID_MACFILEI 10 +#define ADEID_PRODOSFILEI 11 +#define ADEID_MSDOSFILEI 12 +#define ADEID_SHORTNAME 13 +#define ADEID_AFPFILEI 14 +#define ADEID_DID 15 + +/* Private Netatalk entries */ +#define ADEID_PRIVDEV 16 +#define ADEID_PRIVINO 17 +#define ADEID_PRIVSYN 18 +#define ADEID_PRIVID 19 +#define ADEID_MAX (ADEID_PRIVID + 1) + +/* + * These are the real ids for the private entries, + * as stored in the adouble file + */ +#define AD_DEV 0x80444556 +#define AD_INO 0x80494E4F +#define AD_SYN 0x8053594E +#define AD_ID 0x8053567E + +/* AppleDouble magic */ +#define AD_APPLESINGLE_MAGIC 0x00051600 +#define AD_APPLEDOUBLE_MAGIC 0x00051607 +#define AD_MAGIC AD_APPLEDOUBLE_MAGIC + +/* Field widths */ +#define ADEDLEN_NAME 255 +#define ADEDLEN_COMMENT 200 +#define ADEDLEN_FILEI 16 +#define ADEDLEN_FINDERI 32 +#define ADEDLEN_FILEDATESI 16 +#define ADEDLEN_SHORTNAME 12 /* length up to 8.3 */ +#define ADEDLEN_AFPFILEI 4 +#define ADEDLEN_MACFILEI 4 +#define ADEDLEN_PRODOSFILEI 8 +#define ADEDLEN_MSDOSFILEI 2 +#define ADEDLEN_ICONBW 128 +#define ADEDLEN_ICONCOL 1024 +#define ADEDLEN_DID 4 +#define ADEDLEN_PRIVDEV 8 +#define ADEDLEN_PRIVINO 8 +#define ADEDLEN_PRIVSYN 8 +#define ADEDLEN_PRIVID 4 + +/* + * Sharemode locks fcntl() offsets + */ +#if _FILE_OFFSET_BITS == 64 || defined(HAVE_LARGEFILE) +#define AD_FILELOCK_BASE (UINT64_C(0x7FFFFFFFFFFFFFFF) - 9) +#else +#define AD_FILELOCK_BASE (UINT32_C(0x7FFFFFFF) - 9) +#endif +#define BYTELOCK_MAX (AD_FILELOCK_BASE - 1) + +#define AD_FILELOCK_OPEN_WR (AD_FILELOCK_BASE + 0) +#define AD_FILELOCK_OPEN_RD (AD_FILELOCK_BASE + 1) +#define AD_FILELOCK_RSRC_OPEN_WR (AD_FILELOCK_BASE + 2) +#define AD_FILELOCK_RSRC_OPEN_RD (AD_FILELOCK_BASE + 3) +#define AD_FILELOCK_DENY_WR (AD_FILELOCK_BASE + 4) +#define AD_FILELOCK_DENY_RD (AD_FILELOCK_BASE + 5) +#define AD_FILELOCK_RSRC_DENY_WR (AD_FILELOCK_BASE + 6) +#define AD_FILELOCK_RSRC_DENY_RD (AD_FILELOCK_BASE + 7) +#define AD_FILELOCK_OPEN_NONE (AD_FILELOCK_BASE + 8) +#define AD_FILELOCK_RSRC_OPEN_NONE (AD_FILELOCK_BASE + 9) + +/* Time stuff we overload the bits a little */ +#define AD_DATE_CREATE 0 +#define AD_DATE_MODIFY 4 +#define AD_DATE_BACKUP 8 +#define AD_DATE_ACCESS 12 +#define AD_DATE_MASK (AD_DATE_CREATE | AD_DATE_MODIFY | \ + AD_DATE_BACKUP | AD_DATE_ACCESS) +#define AD_DATE_UNIX (1 << 10) +#define AD_DATE_START 0x80000000 +#define AD_DATE_DELTA 946684800 +#define AD_DATE_FROM_UNIX(x) (htonl((x) - AD_DATE_DELTA)) +#define AD_DATE_TO_UNIX(x) (ntohl(x) + AD_DATE_DELTA) + +#define AD_CONV_WIPE_BLANK (1<<0) +#define AD_CONV_DELETE (1<<1) + +struct adouble; + +size_t ad_getentrylen(const struct adouble *ad, int eid); +size_t ad_getentryoff(const struct adouble *ad, int eid); +size_t ad_setentrylen(struct adouble *ad, int eid, size_t len); +size_t ad_setentryoff(struct adouble *ad, int eid, size_t off); +char *ad_get_entry(const struct adouble *ad, int eid); +int ad_getdate(const struct adouble *ad, unsigned int dateoff, uint32_t *date); +int ad_setdate(struct adouble *ad, unsigned int dateoff, uint32_t date); +int ad_convert(struct vfs_handle_struct *handle, + const struct smb_filename *smb_fname, + const char *catia_mappings, + uint32_t flags); +bool ad_unconvert(TALLOC_CTX *mem_ctx, + struct vfs_handle_struct *handle, + const char *catia_mappings, + struct smb_filename *smb_fname, + bool *converted); +struct adouble *ad_init(TALLOC_CTX *ctx, adouble_type_t type); +NTSTATUS adouble_open_from_base_fsp(const struct files_struct *dirfsp, + struct files_struct *base_fsp, + adouble_type_t type, + int flags, + mode_t mode, + struct files_struct **_ad_fsp); +struct adouble *ad_get(TALLOC_CTX *ctx, + vfs_handle_struct *handle, + const struct smb_filename *smb_fname, + adouble_type_t type); +struct adouble *ad_fget(TALLOC_CTX *ctx, vfs_handle_struct *handle, + files_struct *fsp, adouble_type_t type); +int ad_fset(struct vfs_handle_struct *handle, + struct adouble *ad, + files_struct *fsp); +bool is_adouble_file(const char *path); +int adouble_path(TALLOC_CTX *ctx, + const struct smb_filename *smb_fname_in, + struct smb_filename **pp_smb_fname_out); + +AfpInfo *afpinfo_new(TALLOC_CTX *ctx); +ssize_t afpinfo_pack(const AfpInfo *ai, char *buf); +AfpInfo *afpinfo_unpack(TALLOC_CTX *ctx, const void *data); + +#endif |